WebView.java revision 94c715d662e803b43dde8984a60f937a26706c7d
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.app.AlertDialog; 20import android.content.Context; 21import android.content.DialogInterface; 22import android.content.Intent; 23import android.content.DialogInterface.OnCancelListener; 24import android.database.DataSetObserver; 25import android.graphics.Bitmap; 26import android.graphics.Canvas; 27import android.graphics.Color; 28import android.graphics.Picture; 29import android.graphics.Point; 30import android.graphics.Rect; 31import android.graphics.Region; 32import android.graphics.drawable.Drawable; 33import android.net.http.SslCertificate; 34import android.net.Uri; 35import android.os.Bundle; 36import android.os.Handler; 37import android.os.Message; 38import android.os.ServiceManager; 39import android.os.SystemClock; 40import android.provider.Checkin; 41import android.text.IClipboard; 42import android.text.Selection; 43import android.text.Spannable; 44import android.util.AttributeSet; 45import android.util.EventLog; 46import android.util.Log; 47import android.util.TypedValue; 48import android.view.Gravity; 49import android.view.KeyEvent; 50import android.view.LayoutInflater; 51import android.view.MotionEvent; 52import android.view.SoundEffectConstants; 53import android.view.VelocityTracker; 54import android.view.View; 55import android.view.ViewConfiguration; 56import android.view.ViewGroup; 57import android.view.ViewParent; 58import android.view.ViewTreeObserver; 59import android.view.animation.AlphaAnimation; 60import android.view.inputmethod.InputMethodManager; 61import android.webkit.WebTextView.AutoCompleteAdapter; 62import android.webkit.WebViewCore.EventHub; 63import android.widget.AbsoluteLayout; 64import android.widget.Adapter; 65import android.widget.AdapterView; 66import android.widget.ArrayAdapter; 67import android.widget.FrameLayout; 68import android.widget.ListView; 69import android.widget.Scroller; 70import android.widget.Toast; 71import android.widget.ZoomButtonsController; 72import android.widget.ZoomControls; 73import android.widget.AdapterView.OnItemClickListener; 74 75import java.io.File; 76import java.io.FileInputStream; 77import java.io.FileNotFoundException; 78import java.io.FileOutputStream; 79import java.io.IOException; 80import java.net.URLDecoder; 81import java.util.ArrayList; 82import java.util.List; 83import java.util.Map; 84 85/** 86 * <p>A View that displays web pages. This class is the basis upon which you 87 * can roll your own web browser or simply display some online content within your Activity. 88 * It uses the WebKit rendering engine to display 89 * web pages and includes methods to navigate forward and backward 90 * through a history, zoom in and out, perform text searches and more.</p> 91 * <p>To enable the built-in zoom, set 92 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 93 * (introduced in API version 3). 94 * <p>Note that, in order for your Activity to access the Internet and load web pages 95 * in a WebView, you must add the <var>INTERNET</var> permissions to your 96 * Android Manifest file:</p> 97 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 98 * 99 * <p>This must be a child of the <code><manifest></code> element.</p> 100 * 101 * <h3>Basic usage</h3> 102 * 103 * <p>By default, a WebView provides no browser-like widgets, does not 104 * enable JavaScript and errors will be ignored. If your goal is only 105 * to display some HTML as a part of your UI, this is probably fine; 106 * the user won't need to interact with the web page beyond reading 107 * it, and the web page won't need to interact with the user. If you 108 * actually want a fully blown web browser, then you probably want to 109 * invoke the Browser application with your URL rather than show it 110 * with a WebView. See {@link android.content.Intent} for more information.</p> 111 * 112 * <pre class="prettyprint"> 113 * WebView webview = new WebView(this); 114 * setContentView(webview); 115 * 116 * // Simplest usage: note that an exception will NOT be thrown 117 * // if there is an error loading this page (see below). 118 * webview.loadUrl("http://slashdot.org/"); 119 * 120 * // Of course you can also load from any string: 121 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 122 * webview.loadData(summary, "text/html", "utf-8"); 123 * // ... although note that there are restrictions on what this HTML can do. 124 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 125 * </pre> 126 * 127 * <p>A WebView has several customization points where you can add your 128 * own behavior. These are:</p> 129 * 130 * <ul> 131 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 132 * This class is called when something that might impact a 133 * browser UI happens, for instance, progress updates and 134 * JavaScript alerts are sent here. 135 * </li> 136 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 137 * It will be called when things happen that impact the 138 * rendering of the content, eg, errors or form submissions. You 139 * can also intercept URL loading here.</li> 140 * <li>Via the {@link android.webkit.WebSettings} class, which contains 141 * miscellaneous configuration. </li> 142 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 143 * This lets you bind Java objects into the WebView so they can be 144 * controlled from the web pages JavaScript.</li> 145 * </ul> 146 * 147 * <p>Here's a more complicated example, showing error handling, 148 * settings, and progress notification:</p> 149 * 150 * <pre class="prettyprint"> 151 * // Let's display the progress in the activity title bar, like the 152 * // browser app does. 153 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 154 * 155 * webview.getSettings().setJavaScriptEnabled(true); 156 * 157 * final Activity activity = this; 158 * webview.setWebChromeClient(new WebChromeClient() { 159 * public void onProgressChanged(WebView view, int progress) { 160 * // Activities and WebViews measure progress with different scales. 161 * // The progress meter will automatically disappear when we reach 100% 162 * activity.setProgress(progress * 1000); 163 * } 164 * }); 165 * webview.setWebViewClient(new WebViewClient() { 166 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 167 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 168 * } 169 * }); 170 * 171 * webview.loadUrl("http://slashdot.org/"); 172 * </pre> 173 * 174 * <h3>Cookie and window management</h3> 175 * 176 * <p>For obvious security reasons, your application has its own 177 * cache, cookie store etc - it does not share the Browser 178 * applications data. Cookies are managed on a separate thread, so 179 * operations like index building don't block the UI 180 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 181 * if you want to use cookies in your application. 182 * </p> 183 * 184 * <p>By default, requests by the HTML to open new windows are 185 * ignored. This is true whether they be opened by JavaScript or by 186 * the target attribute on a link. You can customize your 187 * WebChromeClient to provide your own behaviour for opening multiple windows, 188 * and render them in whatever manner you want.</p> 189 * 190 * <p>Standard behavior for an Activity is to be destroyed and 191 * recreated when the devices orientation is changed. This will cause 192 * the WebView to reload the current page. If you don't want that, you 193 * can set your Activity to handle the orientation and keyboardHidden 194 * changes, and then just leave the WebView alone. It'll automatically 195 * re-orient itself as appropriate.</p> 196 */ 197public class WebView extends AbsoluteLayout 198 implements ViewTreeObserver.OnGlobalFocusChangeListener, 199 ViewGroup.OnHierarchyChangeListener { 200 201 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 202 // the screen all-the-time. Good for profiling our drawing code 203 static private final boolean AUTO_REDRAW_HACK = false; 204 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 205 private boolean mAutoRedraw; 206 207 static final String LOGTAG = "webview"; 208 209 private static class ExtendedZoomControls extends FrameLayout { 210 public ExtendedZoomControls(Context context, AttributeSet attrs) { 211 super(context, attrs); 212 LayoutInflater inflater = (LayoutInflater) 213 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 214 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 215 mPlusMinusZoomControls = (ZoomControls) findViewById( 216 com.android.internal.R.id.zoomControls); 217 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 218 View.GONE); 219 } 220 221 public void show(boolean showZoom, boolean canZoomOut) { 222 mPlusMinusZoomControls.setVisibility( 223 showZoom ? View.VISIBLE : View.GONE); 224 fade(View.VISIBLE, 0.0f, 1.0f); 225 } 226 227 public void hide() { 228 fade(View.GONE, 1.0f, 0.0f); 229 } 230 231 private void fade(int visibility, float startAlpha, float endAlpha) { 232 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 233 anim.setDuration(500); 234 startAnimation(anim); 235 setVisibility(visibility); 236 } 237 238 public boolean hasFocus() { 239 return mPlusMinusZoomControls.hasFocus(); 240 } 241 242 public void setOnZoomInClickListener(OnClickListener listener) { 243 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 244 } 245 246 public void setOnZoomOutClickListener(OnClickListener listener) { 247 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 248 } 249 250 ZoomControls mPlusMinusZoomControls; 251 } 252 253 /** 254 * Transportation object for returning WebView across thread boundaries. 255 */ 256 public class WebViewTransport { 257 private WebView mWebview; 258 259 /** 260 * Set the WebView to the transportation object. 261 * @param webview The WebView to transport. 262 */ 263 public synchronized void setWebView(WebView webview) { 264 mWebview = webview; 265 } 266 267 /** 268 * Return the WebView object. 269 * @return WebView The transported WebView object. 270 */ 271 public synchronized WebView getWebView() { 272 return mWebview; 273 } 274 } 275 276 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 277 private final CallbackProxy mCallbackProxy; 278 279 private final WebViewDatabase mDatabase; 280 281 // SSL certificate for the main top-level page (if secure) 282 private SslCertificate mCertificate; 283 284 // Native WebView pointer that is 0 until the native object has been 285 // created. 286 private int mNativeClass; 287 // This would be final but it needs to be set to null when the WebView is 288 // destroyed. 289 private WebViewCore mWebViewCore; 290 // Handler for dispatching UI messages. 291 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 292 private WebTextView mWebTextView; 293 // Used to ignore changes to webkit text that arrives to the UI side after 294 // more key events. 295 private int mTextGeneration; 296 297 // Used by WebViewCore to create child views. 298 /* package */ final ViewManager mViewManager; 299 300 /** 301 * Position of the last touch event. 302 */ 303 private float mLastTouchX; 304 private float mLastTouchY; 305 306 /** 307 * Time of the last touch event. 308 */ 309 private long mLastTouchTime; 310 311 /** 312 * Time of the last time sending touch event to WebViewCore 313 */ 314 private long mLastSentTouchTime; 315 316 /** 317 * The minimum elapsed time before sending another ACTION_MOVE event to 318 * WebViewCore. This really should be tuned for each type of the devices. 319 * For example in Google Map api test case, it takes Dream device at least 320 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 321 * triggering the layout and drawing the picture. While the same process 322 * takes 60+ms on the current high speed device. If we make 323 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 324 * to WebViewCore queue and the real layout and draw events will be pushed 325 * to further, which slows down the refresh rate. Choose 50 to favor the 326 * current high speed devices. For Dream like devices, 100 is a better 327 * choice. Maybe make this in the buildspec later. 328 */ 329 private static final int TOUCH_SENT_INTERVAL = 50; 330 331 /** 332 * Helper class to get velocity for fling 333 */ 334 VelocityTracker mVelocityTracker; 335 private int mMaximumFling; 336 private float mLastVelocity; 337 private float mLastVelX; 338 private float mLastVelY; 339 340 /** 341 * Touch mode 342 */ 343 private int mTouchMode = TOUCH_DONE_MODE; 344 private static final int TOUCH_INIT_MODE = 1; 345 private static final int TOUCH_DRAG_START_MODE = 2; 346 private static final int TOUCH_DRAG_MODE = 3; 347 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 348 private static final int TOUCH_SHORTPRESS_MODE = 5; 349 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 350 private static final int TOUCH_DONE_MODE = 7; 351 private static final int TOUCH_SELECT_MODE = 8; 352 353 // Whether to forward the touch events to WebCore 354 private boolean mForwardTouchEvents = false; 355 356 // Whether to prevent drag during touch. The initial value depends on 357 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 358 // take control of touch events unless it says no for touch down event. 359 private static final int PREVENT_DRAG_NO = 0; 360 private static final int PREVENT_DRAG_MAYBE_YES = 1; 361 private static final int PREVENT_DRAG_YES = 2; 362 private int mPreventDrag = PREVENT_DRAG_NO; 363 364 // To keep track of whether the current drag was initiated by a WebTextView, 365 // so that we know not to hide the cursor 366 boolean mDragFromTextInput; 367 368 // Whether or not to draw the cursor ring. 369 private boolean mDrawCursorRing = true; 370 371 // true if onPause has been called (and not onResume) 372 private boolean mIsPaused; 373 374 /** 375 * Customizable constant 376 */ 377 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 378 private int mTouchSlopSquare; 379 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 380 private int mDoubleTapSlopSquare; 381 // pre-computed density adjusted navigation slop 382 private int mNavSlop; 383 // This should be ViewConfiguration.getTapTimeout() 384 // But system time out is 100ms, which is too short for the browser. 385 // In the browser, if it switches out of tap too soon, jump tap won't work. 386 private static final int TAP_TIMEOUT = 200; 387 // This should be ViewConfiguration.getLongPressTimeout() 388 // But system time out is 500ms, which is too short for the browser. 389 // With a short timeout, it's difficult to treat trigger a short press. 390 private static final int LONG_PRESS_TIMEOUT = 1000; 391 // needed to avoid flinging after a pause of no movement 392 private static final int MIN_FLING_TIME = 250; 393 // The time that the Zoom Controls are visible before fading away 394 private static final long ZOOM_CONTROLS_TIMEOUT = 395 ViewConfiguration.getZoomControlsTimeout(); 396 // The amount of content to overlap between two screens when going through 397 // pages with the space bar, in pixels. 398 private static final int PAGE_SCROLL_OVERLAP = 24; 399 400 /** 401 * These prevent calling requestLayout if either dimension is fixed. This 402 * depends on the layout parameters and the measure specs. 403 */ 404 boolean mWidthCanMeasure; 405 boolean mHeightCanMeasure; 406 407 // Remember the last dimensions we sent to the native side so we can avoid 408 // sending the same dimensions more than once. 409 int mLastWidthSent; 410 int mLastHeightSent; 411 412 private int mContentWidth; // cache of value from WebViewCore 413 private int mContentHeight; // cache of value from WebViewCore 414 415 // Need to have the separate control for horizontal and vertical scrollbar 416 // style than the View's single scrollbar style 417 private boolean mOverlayHorizontalScrollbar = true; 418 private boolean mOverlayVerticalScrollbar = false; 419 420 // our standard speed. this way small distances will be traversed in less 421 // time than large distances, but we cap the duration, so that very large 422 // distances won't take too long to get there. 423 private static final int STD_SPEED = 480; // pixels per second 424 // time for the longest scroll animation 425 private static final int MAX_DURATION = 750; // milliseconds 426 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 427 private Scroller mScroller; 428 429 private boolean mWrapContent; 430 431 /** 432 * Private message ids 433 */ 434 private static final int REMEMBER_PASSWORD = 1; 435 private static final int NEVER_REMEMBER_PASSWORD = 2; 436 private static final int SWITCH_TO_SHORTPRESS = 3; 437 private static final int SWITCH_TO_LONGPRESS = 4; 438 private static final int RELEASE_SINGLE_TAP = 5; 439 private static final int REQUEST_FORM_DATA = 6; 440 private static final int RESUME_WEBCORE_UPDATE = 7; 441 442 //! arg1=x, arg2=y 443 static final int SCROLL_TO_MSG_ID = 10; 444 static final int SCROLL_BY_MSG_ID = 11; 445 //! arg1=x, arg2=y 446 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 447 //! arg1=x, arg2=y 448 static final int SYNC_SCROLL_TO_MSG_ID = 13; 449 static final int NEW_PICTURE_MSG_ID = 14; 450 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 451 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 452 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 453 static final int MOVE_OUT_OF_PLUGIN = 19; 454 static final int CLEAR_TEXT_ENTRY = 20; 455 static final int UPDATE_TEXT_SELECTION_MSG_ID = 21; 456 static final int UPDATE_CLIPBOARD = 22; 457 static final int LONG_PRESS_CENTER = 23; 458 static final int PREVENT_TOUCH_ID = 24; 459 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 460 // obj=Rect in doc coordinates 461 static final int INVAL_RECT_MSG_ID = 26; 462 static final int REQUEST_KEYBOARD = 27; 463 464 static final String[] HandlerDebugString = { 465 "REMEMBER_PASSWORD", // = 1; 466 "NEVER_REMEMBER_PASSWORD", // = 2; 467 "SWITCH_TO_SHORTPRESS", // = 3; 468 "SWITCH_TO_LONGPRESS", // = 4; 469 "RELEASE_SINGLE_TAP", // = 5; 470 "REQUEST_FORM_DATA", // = 6; 471 "SWITCH_TO_CLICK", // = 7; 472 "RESUME_WEBCORE_UPDATE", // = 8; 473 "9", 474 "SCROLL_TO_MSG_ID", // = 10; 475 "SCROLL_BY_MSG_ID", // = 11; 476 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 477 "SYNC_SCROLL_TO_MSG_ID", // = 13; 478 "NEW_PICTURE_MSG_ID", // = 14; 479 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 480 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 481 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 482 "18", // = 18; 483 "MOVE_OUT_OF_PLUGIN", // = 19; 484 "CLEAR_TEXT_ENTRY", // = 20; 485 "UPDATE_TEXT_SELECTION_MSG_ID", // = 21; 486 "UPDATE_CLIPBOARD", // = 22; 487 "LONG_PRESS_CENTER", // = 23; 488 "PREVENT_TOUCH_ID", // = 24; 489 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 490 "INVAL_RECT_MSG_ID", // = 26; 491 "REQUEST_KEYBOARD" // = 27; 492 }; 493 494 // default scale limit. Depending on the display density 495 private static float DEFAULT_MAX_ZOOM_SCALE; 496 private static float DEFAULT_MIN_ZOOM_SCALE; 497 // scale limit, which can be set through viewport meta tag in the web page 498 private float mMaxZoomScale; 499 private float mMinZoomScale; 500 private boolean mMinZoomScaleFixed = true; 501 502 // initial scale in percent. 0 means using default. 503 private int mInitialScale = 0; 504 505 // while in the zoom overview mode, the page's width is fully fit to the 506 // current window. The page is alive, in another words, you can click to 507 // follow the links. Double tap will toggle between zoom overview mode and 508 // the last zoom scale. 509 boolean mInZoomOverview = false; 510 511 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 512 // engadget always have wider mContentWidth no matter what viewport size is. 513 int mZoomOverviewWidth = WebViewCore.DEFAULT_VIEWPORT_WIDTH; 514 float mLastScale; 515 516 // default scale. Depending on the display density. 517 static int DEFAULT_SCALE_PERCENT; 518 private float mDefaultScale; 519 520 // set to true temporarily while the zoom control is being dragged 521 private boolean mPreviewZoomOnly = false; 522 523 // computed scale and inverse, from mZoomWidth. 524 private float mActualScale; 525 private float mInvActualScale; 526 // if this is non-zero, it is used on drawing rather than mActualScale 527 private float mZoomScale; 528 private float mInvInitialZoomScale; 529 private float mInvFinalZoomScale; 530 private int mInitialScrollX; 531 private int mInitialScrollY; 532 private long mZoomStart; 533 private static final int ZOOM_ANIMATION_LENGTH = 500; 534 535 private boolean mUserScroll = false; 536 537 private int mSnapScrollMode = SNAP_NONE; 538 private static final int SNAP_NONE = 1; 539 private static final int SNAP_X = 2; 540 private static final int SNAP_Y = 3; 541 private static final int SNAP_X_LOCK = 4; 542 private static final int SNAP_Y_LOCK = 5; 543 private boolean mSnapPositive; 544 545 // Used to match key downs and key ups 546 private boolean mGotKeyDown; 547 548 /* package */ static boolean mLogEvent = true; 549 private static final int EVENT_LOG_ZOOM_LEVEL_CHANGE = 70101; 550 private static final int EVENT_LOG_DOUBLE_TAP_DURATION = 70102; 551 552 // for event log 553 private long mLastTouchUpTime = 0; 554 555 /** 556 * URI scheme for telephone number 557 */ 558 public static final String SCHEME_TEL = "tel:"; 559 /** 560 * URI scheme for email address 561 */ 562 public static final String SCHEME_MAILTO = "mailto:"; 563 /** 564 * URI scheme for map address 565 */ 566 public static final String SCHEME_GEO = "geo:0,0?q="; 567 568 private int mBackgroundColor = Color.WHITE; 569 570 // Used to notify listeners of a new picture. 571 private PictureListener mPictureListener; 572 /** 573 * Interface to listen for new pictures as they change. 574 */ 575 public interface PictureListener { 576 /** 577 * Notify the listener that the picture has changed. 578 * @param view The WebView that owns the picture. 579 * @param picture The new picture. 580 */ 581 public void onNewPicture(WebView view, Picture picture); 582 } 583 584 // FIXME: Want to make this public, but need to change the API file. 585 public /*static*/ class HitTestResult { 586 /** 587 * Default HitTestResult, where the target is unknown 588 */ 589 public static final int UNKNOWN_TYPE = 0; 590 /** 591 * HitTestResult for hitting a HTML::a tag 592 */ 593 public static final int ANCHOR_TYPE = 1; 594 /** 595 * HitTestResult for hitting a phone number 596 */ 597 public static final int PHONE_TYPE = 2; 598 /** 599 * HitTestResult for hitting a map address 600 */ 601 public static final int GEO_TYPE = 3; 602 /** 603 * HitTestResult for hitting an email address 604 */ 605 public static final int EMAIL_TYPE = 4; 606 /** 607 * HitTestResult for hitting an HTML::img tag 608 */ 609 public static final int IMAGE_TYPE = 5; 610 /** 611 * HitTestResult for hitting a HTML::a tag which contains HTML::img 612 */ 613 public static final int IMAGE_ANCHOR_TYPE = 6; 614 /** 615 * HitTestResult for hitting a HTML::a tag with src=http 616 */ 617 public static final int SRC_ANCHOR_TYPE = 7; 618 /** 619 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 620 */ 621 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 622 /** 623 * HitTestResult for hitting an edit text area 624 */ 625 public static final int EDIT_TEXT_TYPE = 9; 626 627 private int mType; 628 private String mExtra; 629 630 HitTestResult() { 631 mType = UNKNOWN_TYPE; 632 } 633 634 private void setType(int type) { 635 mType = type; 636 } 637 638 private void setExtra(String extra) { 639 mExtra = extra; 640 } 641 642 public int getType() { 643 return mType; 644 } 645 646 public String getExtra() { 647 return mExtra; 648 } 649 } 650 651 // The View containing the zoom controls 652 private ExtendedZoomControls mZoomControls; 653 private Runnable mZoomControlRunnable; 654 655 private ZoomButtonsController mZoomButtonsController; 656 657 // These keep track of the center point of the zoom. They are used to 658 // determine the point around which we should zoom. 659 private float mZoomCenterX; 660 private float mZoomCenterY; 661 662 private ZoomButtonsController.OnZoomListener mZoomListener = 663 new ZoomButtonsController.OnZoomListener() { 664 665 public void onVisibilityChanged(boolean visible) { 666 if (visible) { 667 switchOutDrawHistory(); 668 updateZoomButtonsEnabled(); 669 } 670 } 671 672 public void onZoom(boolean zoomIn) { 673 if (zoomIn) { 674 zoomIn(); 675 } else { 676 zoomOut(); 677 } 678 679 updateZoomButtonsEnabled(); 680 } 681 }; 682 683 /** 684 * Construct a new WebView with a Context object. 685 * @param context A Context object used to access application assets. 686 */ 687 public WebView(Context context) { 688 this(context, null); 689 } 690 691 /** 692 * Construct a new WebView with layout parameters. 693 * @param context A Context object used to access application assets. 694 * @param attrs An AttributeSet passed to our parent. 695 */ 696 public WebView(Context context, AttributeSet attrs) { 697 this(context, attrs, com.android.internal.R.attr.webViewStyle); 698 } 699 700 /** 701 * Construct a new WebView with layout parameters and a default style. 702 * @param context A Context object used to access application assets. 703 * @param attrs An AttributeSet passed to our parent. 704 * @param defStyle The default style resource ID. 705 */ 706 public WebView(Context context, AttributeSet attrs, int defStyle) { 707 this(context, attrs, defStyle, null); 708 } 709 710 /** 711 * Construct a new WebView with layout parameters, a default style and a set 712 * of custom Javscript interfaces to be added to the WebView at initialization 713 * time. This guraratees that these interfaces will be available when the JS 714 * context is initialized. 715 * @param context A Context object used to access application assets. 716 * @param attrs An AttributeSet passed to our parent. 717 * @param defStyle The default style resource ID. 718 * @param javascriptInterfaces is a Map of intareface names, as keys, and 719 * object implementing those interfaces, as values. 720 * @hide pending API council approval. 721 */ 722 protected WebView(Context context, AttributeSet attrs, int defStyle, 723 Map<String, Object> javascriptInterfaces) { 724 super(context, attrs, defStyle); 725 init(); 726 727 mCallbackProxy = new CallbackProxy(context, this); 728 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 729 mDatabase = WebViewDatabase.getInstance(context); 730 mScroller = new Scroller(context); 731 732 mViewManager = new ViewManager(this); 733 734 mZoomButtonsController = new ZoomButtonsController(this); 735 mZoomButtonsController.setOnZoomListener(mZoomListener); 736 // ZoomButtonsController positions the buttons at the bottom, but in 737 // the middle. Change their layout parameters so they appear on the 738 // right. 739 View controls = mZoomButtonsController.getZoomControls(); 740 ViewGroup.LayoutParams params = controls.getLayoutParams(); 741 if (params instanceof FrameLayout.LayoutParams) { 742 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 743 params; 744 frameParams.gravity = Gravity.RIGHT; 745 } 746 } 747 748 private void updateZoomButtonsEnabled() { 749 boolean canZoomIn = mActualScale < mMaxZoomScale; 750 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 751 if (!canZoomIn && !canZoomOut) { 752 // Hide the zoom in and out buttons, as well as the fit to page 753 // button, if the page cannot zoom 754 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 755 } else { 756 // Bring back the hidden zoom controls. 757 mZoomButtonsController.getZoomControls() 758 .setVisibility(View.VISIBLE); 759 // Set each one individually, as a page may be able to zoom in 760 // or out. 761 mZoomButtonsController.setZoomInEnabled(canZoomIn); 762 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 763 } 764 } 765 766 private void init() { 767 setWillNotDraw(false); 768 setFocusable(true); 769 setFocusableInTouchMode(true); 770 setClickable(true); 771 setLongClickable(true); 772 773 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 774 int slop = configuration.getScaledTouchSlop(); 775 mTouchSlopSquare = slop * slop; 776 mMinLockSnapReverseDistance = slop; 777 slop = configuration.getScaledDoubleTapSlop(); 778 mDoubleTapSlopSquare = slop * slop; 779 final float density = getContext().getResources().getDisplayMetrics().density; 780 // use one line height, 16 based on our current default font, for how 781 // far we allow a touch be away from the edge of a link 782 mNavSlop = (int) (16 * density); 783 // density adjusted scale factors 784 DEFAULT_SCALE_PERCENT = (int) (100 * density); 785 mDefaultScale = density; 786 mActualScale = density; 787 mInvActualScale = 1 / density; 788 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 789 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 790 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 791 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 792 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 793 } 794 795 /* package */void updateDefaultZoomDensity(int zoomDensity) { 796 final float density = getContext().getResources().getDisplayMetrics().density 797 * 100 / zoomDensity; 798 if (Math.abs(density - mDefaultScale) > 0.01) { 799 float scaleFactor = density / mDefaultScale; 800 // adjust the limits 801 mNavSlop = (int) (16 * density); 802 DEFAULT_SCALE_PERCENT = (int) (100 * density); 803 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 804 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 805 mDefaultScale = density; 806 mMaxZoomScale *= scaleFactor; 807 mMinZoomScale *= scaleFactor; 808 setNewZoomScale(mActualScale * scaleFactor, false); 809 } 810 } 811 812 /* package */ boolean onSavePassword(String schemePlusHost, String username, 813 String password, final Message resumeMsg) { 814 boolean rVal = false; 815 if (resumeMsg == null) { 816 // null resumeMsg implies saving password silently 817 mDatabase.setUsernamePassword(schemePlusHost, username, password); 818 } else { 819 final Message remember = mPrivateHandler.obtainMessage( 820 REMEMBER_PASSWORD); 821 remember.getData().putString("host", schemePlusHost); 822 remember.getData().putString("username", username); 823 remember.getData().putString("password", password); 824 remember.obj = resumeMsg; 825 826 final Message neverRemember = mPrivateHandler.obtainMessage( 827 NEVER_REMEMBER_PASSWORD); 828 neverRemember.getData().putString("host", schemePlusHost); 829 neverRemember.getData().putString("username", username); 830 neverRemember.getData().putString("password", password); 831 neverRemember.obj = resumeMsg; 832 833 new AlertDialog.Builder(getContext()) 834 .setTitle(com.android.internal.R.string.save_password_label) 835 .setMessage(com.android.internal.R.string.save_password_message) 836 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 837 new DialogInterface.OnClickListener() { 838 public void onClick(DialogInterface dialog, int which) { 839 resumeMsg.sendToTarget(); 840 } 841 }) 842 .setNeutralButton(com.android.internal.R.string.save_password_remember, 843 new DialogInterface.OnClickListener() { 844 public void onClick(DialogInterface dialog, int which) { 845 remember.sendToTarget(); 846 } 847 }) 848 .setNegativeButton(com.android.internal.R.string.save_password_never, 849 new DialogInterface.OnClickListener() { 850 public void onClick(DialogInterface dialog, int which) { 851 neverRemember.sendToTarget(); 852 } 853 }) 854 .setOnCancelListener(new OnCancelListener() { 855 public void onCancel(DialogInterface dialog) { 856 resumeMsg.sendToTarget(); 857 } 858 }).show(); 859 // Return true so that WebViewCore will pause while the dialog is 860 // up. 861 rVal = true; 862 } 863 return rVal; 864 } 865 866 @Override 867 public void setScrollBarStyle(int style) { 868 if (style == View.SCROLLBARS_INSIDE_INSET 869 || style == View.SCROLLBARS_OUTSIDE_INSET) { 870 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 871 } else { 872 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 873 } 874 super.setScrollBarStyle(style); 875 } 876 877 /** 878 * Specify whether the horizontal scrollbar has overlay style. 879 * @param overlay TRUE if horizontal scrollbar should have overlay style. 880 */ 881 public void setHorizontalScrollbarOverlay(boolean overlay) { 882 mOverlayHorizontalScrollbar = overlay; 883 } 884 885 /** 886 * Specify whether the vertical scrollbar has overlay style. 887 * @param overlay TRUE if vertical scrollbar should have overlay style. 888 */ 889 public void setVerticalScrollbarOverlay(boolean overlay) { 890 mOverlayVerticalScrollbar = overlay; 891 } 892 893 /** 894 * Return whether horizontal scrollbar has overlay style 895 * @return TRUE if horizontal scrollbar has overlay style. 896 */ 897 public boolean overlayHorizontalScrollbar() { 898 return mOverlayHorizontalScrollbar; 899 } 900 901 /** 902 * Return whether vertical scrollbar has overlay style 903 * @return TRUE if vertical scrollbar has overlay style. 904 */ 905 public boolean overlayVerticalScrollbar() { 906 return mOverlayVerticalScrollbar; 907 } 908 909 /* 910 * Return the width of the view where the content of WebView should render 911 * to. 912 * Note: this can be called from WebCoreThread. 913 */ 914 /* package */ int getViewWidth() { 915 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 916 return getWidth(); 917 } else { 918 return getWidth() - getVerticalScrollbarWidth(); 919 } 920 } 921 922 /* 923 * returns the height of the titlebarview (if any). Does not care about 924 * scrolling 925 */ 926 private int getTitleHeight() { 927 return mTitleBar != null ? mTitleBar.getHeight() : 0; 928 } 929 930 /* 931 * Return the amount of the titlebarview (if any) that is visible 932 */ 933 private int getVisibleTitleHeight() { 934 return Math.max(getTitleHeight() - mScrollY, 0); 935 } 936 937 /* 938 * Return the height of the view where the content of WebView should render 939 * to. Note that this excludes mTitleBar, if there is one. 940 * Note: this can be called from WebCoreThread. 941 */ 942 /* package */ int getViewHeight() { 943 return getViewHeightWithTitle() - getVisibleTitleHeight(); 944 } 945 946 private int getViewHeightWithTitle() { 947 int height = getHeight(); 948 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 949 height -= getHorizontalScrollbarHeight(); 950 } 951 return height; 952 } 953 954 /** 955 * @return The SSL certificate for the main top-level page or null if 956 * there is no certificate (the site is not secure). 957 */ 958 public SslCertificate getCertificate() { 959 return mCertificate; 960 } 961 962 /** 963 * Sets the SSL certificate for the main top-level page. 964 */ 965 public void setCertificate(SslCertificate certificate) { 966 // here, the certificate can be null (if the site is not secure) 967 mCertificate = certificate; 968 } 969 970 //------------------------------------------------------------------------- 971 // Methods called by activity 972 //------------------------------------------------------------------------- 973 974 /** 975 * Save the username and password for a particular host in the WebView's 976 * internal database. 977 * @param host The host that required the credentials. 978 * @param username The username for the given host. 979 * @param password The password for the given host. 980 */ 981 public void savePassword(String host, String username, String password) { 982 mDatabase.setUsernamePassword(host, username, password); 983 } 984 985 /** 986 * Set the HTTP authentication credentials for a given host and realm. 987 * 988 * @param host The host for the credentials. 989 * @param realm The realm for the credentials. 990 * @param username The username for the password. If it is null, it means 991 * password can't be saved. 992 * @param password The password 993 */ 994 public void setHttpAuthUsernamePassword(String host, String realm, 995 String username, String password) { 996 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 997 } 998 999 /** 1000 * Retrieve the HTTP authentication username and password for a given 1001 * host & realm pair 1002 * 1003 * @param host The host for which the credentials apply. 1004 * @param realm The realm for which the credentials apply. 1005 * @return String[] if found, String[0] is username, which can be null and 1006 * String[1] is password. Return null if it can't find anything. 1007 */ 1008 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1009 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1010 } 1011 1012 /** 1013 * Destroy the internal state of the WebView. This method should be called 1014 * after the WebView has been removed from the view system. No other 1015 * methods may be called on a WebView after destroy. 1016 */ 1017 public void destroy() { 1018 clearTextEntry(); 1019 if (mWebViewCore != null) { 1020 // Set the handlers to null before destroying WebViewCore so no 1021 // more messages will be posted. 1022 mCallbackProxy.setWebViewClient(null); 1023 mCallbackProxy.setWebChromeClient(null); 1024 // Tell WebViewCore to destroy itself 1025 WebViewCore webViewCore = mWebViewCore; 1026 mWebViewCore = null; // prevent using partial webViewCore 1027 webViewCore.destroy(); 1028 // Remove any pending messages that might not be serviced yet. 1029 mPrivateHandler.removeCallbacksAndMessages(null); 1030 mCallbackProxy.removeCallbacksAndMessages(null); 1031 // Wake up the WebCore thread just in case it is waiting for a 1032 // javascript dialog. 1033 synchronized (mCallbackProxy) { 1034 mCallbackProxy.notify(); 1035 } 1036 } 1037 if (mNativeClass != 0) { 1038 nativeDestroy(); 1039 mNativeClass = 0; 1040 } 1041 } 1042 1043 /** 1044 * Enables platform notifications of data state and proxy changes. 1045 */ 1046 public static void enablePlatformNotifications() { 1047 Network.enablePlatformNotifications(); 1048 } 1049 1050 /** 1051 * If platform notifications are enabled, this should be called 1052 * from the Activity's onPause() or onStop(). 1053 */ 1054 public static void disablePlatformNotifications() { 1055 Network.disablePlatformNotifications(); 1056 } 1057 1058 /** 1059 * Sets JavaScript engine flags. 1060 * 1061 * @param flags JS engine flags in a String 1062 * 1063 * @hide pending API solidification 1064 */ 1065 public void setJsFlags(String flags) { 1066 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1067 } 1068 1069 /** 1070 * Inform WebView of the network state. This is used to set 1071 * the javascript property window.navigator.isOnline and 1072 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1073 * @param networkUp boolean indicating if network is available 1074 */ 1075 public void setNetworkAvailable(boolean networkUp) { 1076 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1077 networkUp ? 1 : 0, 0); 1078 } 1079 1080 /** 1081 * Save the state of this WebView used in 1082 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1083 * method no longer stores the display data for this WebView. The previous 1084 * behavior could potentially leak files if {@link #restoreState} was never 1085 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1086 * and restoring the display data. 1087 * @param outState The Bundle to store the WebView state. 1088 * @return The same copy of the back/forward list used to save the state. If 1089 * saveState fails, the returned list will be null. 1090 * @see #savePicture 1091 * @see #restorePicture 1092 */ 1093 public WebBackForwardList saveState(Bundle outState) { 1094 if (outState == null) { 1095 return null; 1096 } 1097 // We grab a copy of the back/forward list because a client of WebView 1098 // may have invalidated the history list by calling clearHistory. 1099 WebBackForwardList list = copyBackForwardList(); 1100 final int currentIndex = list.getCurrentIndex(); 1101 final int size = list.getSize(); 1102 // We should fail saving the state if the list is empty or the index is 1103 // not in a valid range. 1104 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1105 return null; 1106 } 1107 outState.putInt("index", currentIndex); 1108 // FIXME: This should just be a byte[][] instead of ArrayList but 1109 // Parcel.java does not have the code to handle multi-dimensional 1110 // arrays. 1111 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1112 for (int i = 0; i < size; i++) { 1113 WebHistoryItem item = list.getItemAtIndex(i); 1114 byte[] data = item.getFlattenedData(); 1115 if (data == null) { 1116 // It would be very odd to not have any data for a given history 1117 // item. And we will fail to rebuild the history list without 1118 // flattened data. 1119 return null; 1120 } 1121 history.add(data); 1122 } 1123 outState.putSerializable("history", history); 1124 if (mCertificate != null) { 1125 outState.putBundle("certificate", 1126 SslCertificate.saveState(mCertificate)); 1127 } 1128 return list; 1129 } 1130 1131 /** 1132 * Save the current display data to the Bundle given. Used in conjunction 1133 * with {@link #saveState}. 1134 * @param b A Bundle to store the display data. 1135 * @param dest The file to store the serialized picture data. Will be 1136 * overwritten with this WebView's picture data. 1137 * @return True if the picture was successfully saved. 1138 */ 1139 public boolean savePicture(Bundle b, File dest) { 1140 if (dest == null || b == null) { 1141 return false; 1142 } 1143 final Picture p = capturePicture(); 1144 try { 1145 final FileOutputStream out = new FileOutputStream(dest); 1146 p.writeToStream(out); 1147 out.close(); 1148 } catch (FileNotFoundException e){ 1149 e.printStackTrace(); 1150 } catch (IOException e) { 1151 e.printStackTrace(); 1152 } catch (RuntimeException e) { 1153 e.printStackTrace(); 1154 } 1155 if (dest.length() > 0) { 1156 b.putInt("scrollX", mScrollX); 1157 b.putInt("scrollY", mScrollY); 1158 b.putFloat("scale", mActualScale); 1159 if (mInZoomOverview) { 1160 b.putFloat("lastScale", mLastScale); 1161 } 1162 return true; 1163 } 1164 return false; 1165 } 1166 1167 /** 1168 * Restore the display data that was save in {@link #savePicture}. Used in 1169 * conjunction with {@link #restoreState}. 1170 * @param b A Bundle containing the saved display data. 1171 * @param src The file where the picture data was stored. 1172 * @return True if the picture was successfully restored. 1173 */ 1174 public boolean restorePicture(Bundle b, File src) { 1175 if (src == null || b == null) { 1176 return false; 1177 } 1178 if (src.exists()) { 1179 Picture p = null; 1180 try { 1181 final FileInputStream in = new FileInputStream(src); 1182 p = Picture.createFromStream(in); 1183 in.close(); 1184 } catch (FileNotFoundException e){ 1185 e.printStackTrace(); 1186 } catch (RuntimeException e) { 1187 e.printStackTrace(); 1188 } catch (IOException e) { 1189 e.printStackTrace(); 1190 } 1191 if (p != null) { 1192 int sx = b.getInt("scrollX", 0); 1193 int sy = b.getInt("scrollY", 0); 1194 float scale = b.getFloat("scale", 1.0f); 1195 mDrawHistory = true; 1196 mHistoryPicture = p; 1197 mScrollX = sx; 1198 mScrollY = sy; 1199 mHistoryWidth = Math.round(p.getWidth() * scale); 1200 mHistoryHeight = Math.round(p.getHeight() * scale); 1201 // as getWidth() / getHeight() of the view are not 1202 // available yet, set up mActualScale, so that when 1203 // onSizeChanged() is called, the rest will be set 1204 // correctly 1205 mActualScale = scale; 1206 float lastScale = b.getFloat("lastScale", -1.0f); 1207 if (lastScale > 0) { 1208 mInZoomOverview = true; 1209 mLastScale = lastScale; 1210 } else { 1211 mInZoomOverview = false; 1212 } 1213 invalidate(); 1214 return true; 1215 } 1216 } 1217 return false; 1218 } 1219 1220 /** 1221 * Restore the state of this WebView from the given map used in 1222 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1223 * be called to restore the state of the WebView before using the object. If 1224 * it is called after the WebView has had a chance to build state (load 1225 * pages, create a back/forward list, etc.) there may be undesirable 1226 * side-effects. Please note that this method no longer restores the 1227 * display data for this WebView. See {@link #savePicture} and {@link 1228 * #restorePicture} for saving and restoring the display data. 1229 * @param inState The incoming Bundle of state. 1230 * @return The restored back/forward list or null if restoreState failed. 1231 * @see #savePicture 1232 * @see #restorePicture 1233 */ 1234 public WebBackForwardList restoreState(Bundle inState) { 1235 WebBackForwardList returnList = null; 1236 if (inState == null) { 1237 return returnList; 1238 } 1239 if (inState.containsKey("index") && inState.containsKey("history")) { 1240 mCertificate = SslCertificate.restoreState( 1241 inState.getBundle("certificate")); 1242 1243 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1244 final int index = inState.getInt("index"); 1245 // We can't use a clone of the list because we need to modify the 1246 // shared copy, so synchronize instead to prevent concurrent 1247 // modifications. 1248 synchronized (list) { 1249 final List<byte[]> history = 1250 (List<byte[]>) inState.getSerializable("history"); 1251 final int size = history.size(); 1252 // Check the index bounds so we don't crash in native code while 1253 // restoring the history index. 1254 if (index < 0 || index >= size) { 1255 return null; 1256 } 1257 for (int i = 0; i < size; i++) { 1258 byte[] data = history.remove(0); 1259 if (data == null) { 1260 // If we somehow have null data, we cannot reconstruct 1261 // the item and thus our history list cannot be rebuilt. 1262 return null; 1263 } 1264 WebHistoryItem item = new WebHistoryItem(data); 1265 list.addHistoryItem(item); 1266 } 1267 // Grab the most recent copy to return to the caller. 1268 returnList = copyBackForwardList(); 1269 // Update the copy to have the correct index. 1270 returnList.setCurrentIndex(index); 1271 } 1272 // Remove all pending messages because we are restoring previous 1273 // state. 1274 mWebViewCore.removeMessages(); 1275 // Send a restore state message. 1276 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1277 } 1278 return returnList; 1279 } 1280 1281 /** 1282 * Load the given url. 1283 * @param url The url of the resource to load. 1284 */ 1285 public void loadUrl(String url) { 1286 if (url == null) { 1287 return; 1288 } 1289 switchOutDrawHistory(); 1290 mWebViewCore.sendMessage(EventHub.LOAD_URL, url); 1291 clearTextEntry(); 1292 } 1293 1294 /** 1295 * Load the url with postData using "POST" method into the WebView. If url 1296 * is not a network url, it will be loaded with {link 1297 * {@link #loadUrl(String)} instead. 1298 * 1299 * @param url The url of the resource to load. 1300 * @param postData The data will be passed to "POST" request. 1301 */ 1302 public void postUrl(String url, byte[] postData) { 1303 if (URLUtil.isNetworkUrl(url)) { 1304 switchOutDrawHistory(); 1305 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1306 arg.mUrl = url; 1307 arg.mPostData = postData; 1308 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1309 clearTextEntry(); 1310 } else { 1311 loadUrl(url); 1312 } 1313 } 1314 1315 /** 1316 * Load the given data into the WebView. This will load the data into 1317 * WebView using the data: scheme. Content loaded through this mechanism 1318 * does not have the ability to load content from the network. 1319 * @param data A String of data in the given encoding. 1320 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1321 * @param encoding The encoding of the data. i.e. utf-8, base64 1322 */ 1323 public void loadData(String data, String mimeType, String encoding) { 1324 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1325 } 1326 1327 /** 1328 * Load the given data into the WebView, use the provided URL as the base 1329 * URL for the content. The base URL is the URL that represents the page 1330 * that is loaded through this interface. As such, it is used for the 1331 * history entry and to resolve any relative URLs. The failUrl is used if 1332 * browser fails to load the data provided. If it is empty or null, and the 1333 * load fails, then no history entry is created. 1334 * <p> 1335 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1336 * files through "file:///android_asset/" for the sub resources is more 1337 * restricted. If you provide null or empty string as baseUrl, you won't be 1338 * able to access asset files. If the baseUrl is anything other than 1339 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1340 * sub resources. 1341 * 1342 * @param baseUrl Url to resolve relative paths with, if null defaults to 1343 * "about:blank" 1344 * @param data A String of data in the given encoding. 1345 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1346 * defaults to "text/html" 1347 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1348 * @param failUrl URL to use if the content fails to load or null. 1349 */ 1350 public void loadDataWithBaseURL(String baseUrl, String data, 1351 String mimeType, String encoding, String failUrl) { 1352 1353 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1354 loadData(data, mimeType, encoding); 1355 return; 1356 } 1357 switchOutDrawHistory(); 1358 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1359 arg.mBaseUrl = baseUrl; 1360 arg.mData = data; 1361 arg.mMimeType = mimeType; 1362 arg.mEncoding = encoding; 1363 arg.mFailUrl = failUrl; 1364 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1365 clearTextEntry(); 1366 } 1367 1368 /** 1369 * Stop the current load. 1370 */ 1371 public void stopLoading() { 1372 // TODO: should we clear all the messages in the queue before sending 1373 // STOP_LOADING? 1374 switchOutDrawHistory(); 1375 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1376 } 1377 1378 /** 1379 * Reload the current url. 1380 */ 1381 public void reload() { 1382 clearTextEntry(); 1383 switchOutDrawHistory(); 1384 mWebViewCore.sendMessage(EventHub.RELOAD); 1385 } 1386 1387 /** 1388 * Return true if this WebView has a back history item. 1389 * @return True iff this WebView has a back history item. 1390 */ 1391 public boolean canGoBack() { 1392 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1393 synchronized (l) { 1394 if (l.getClearPending()) { 1395 return false; 1396 } else { 1397 return l.getCurrentIndex() > 0; 1398 } 1399 } 1400 } 1401 1402 /** 1403 * Go back in the history of this WebView. 1404 */ 1405 public void goBack() { 1406 goBackOrForward(-1); 1407 } 1408 1409 /** 1410 * Return true if this WebView has a forward history item. 1411 * @return True iff this Webview has a forward history item. 1412 */ 1413 public boolean canGoForward() { 1414 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1415 synchronized (l) { 1416 if (l.getClearPending()) { 1417 return false; 1418 } else { 1419 return l.getCurrentIndex() < l.getSize() - 1; 1420 } 1421 } 1422 } 1423 1424 /** 1425 * Go forward in the history of this WebView. 1426 */ 1427 public void goForward() { 1428 goBackOrForward(1); 1429 } 1430 1431 /** 1432 * Return true if the page can go back or forward the given 1433 * number of steps. 1434 * @param steps The negative or positive number of steps to move the 1435 * history. 1436 */ 1437 public boolean canGoBackOrForward(int steps) { 1438 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1439 synchronized (l) { 1440 if (l.getClearPending()) { 1441 return false; 1442 } else { 1443 int newIndex = l.getCurrentIndex() + steps; 1444 return newIndex >= 0 && newIndex < l.getSize(); 1445 } 1446 } 1447 } 1448 1449 /** 1450 * Go to the history item that is the number of steps away from 1451 * the current item. Steps is negative if backward and positive 1452 * if forward. 1453 * @param steps The number of steps to take back or forward in the back 1454 * forward list. 1455 */ 1456 public void goBackOrForward(int steps) { 1457 goBackOrForward(steps, false); 1458 } 1459 1460 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1461 // every time we go back or forward, we want to reset the 1462 // WebView certificate: 1463 // if the new site is secure, we will reload it and get a 1464 // new certificate set; 1465 // if the new site is not secure, the certificate must be 1466 // null, and that will be the case 1467 mCertificate = null; 1468 if (steps != 0) { 1469 clearTextEntry(); 1470 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1471 ignoreSnapshot ? 1 : 0); 1472 } 1473 } 1474 1475 private boolean extendScroll(int y) { 1476 int finalY = mScroller.getFinalY(); 1477 int newY = pinLocY(finalY + y); 1478 if (newY == finalY) return false; 1479 mScroller.setFinalY(newY); 1480 mScroller.extendDuration(computeDuration(0, y)); 1481 return true; 1482 } 1483 1484 /** 1485 * Scroll the contents of the view up by half the view size 1486 * @param top true to jump to the top of the page 1487 * @return true if the page was scrolled 1488 */ 1489 public boolean pageUp(boolean top) { 1490 if (mNativeClass == 0) { 1491 return false; 1492 } 1493 nativeClearCursor(); // start next trackball movement from page edge 1494 if (top) { 1495 // go to the top of the document 1496 return pinScrollTo(mScrollX, 0, true, 0); 1497 } 1498 // Page up 1499 int h = getHeight(); 1500 int y; 1501 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1502 y = -h + PAGE_SCROLL_OVERLAP; 1503 } else { 1504 y = -h / 2; 1505 } 1506 mUserScroll = true; 1507 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1508 : extendScroll(y); 1509 } 1510 1511 /** 1512 * Scroll the contents of the view down by half the page size 1513 * @param bottom true to jump to bottom of page 1514 * @return true if the page was scrolled 1515 */ 1516 public boolean pageDown(boolean bottom) { 1517 if (mNativeClass == 0) { 1518 return false; 1519 } 1520 nativeClearCursor(); // start next trackball movement from page edge 1521 if (bottom) { 1522 return pinScrollTo(mScrollX, mContentHeight, true, 0); 1523 } 1524 // Page down. 1525 int h = getHeight(); 1526 int y; 1527 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1528 y = h - PAGE_SCROLL_OVERLAP; 1529 } else { 1530 y = h / 2; 1531 } 1532 mUserScroll = true; 1533 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1534 : extendScroll(y); 1535 } 1536 1537 /** 1538 * Clear the view so that onDraw() will draw nothing but white background, 1539 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1540 */ 1541 public void clearView() { 1542 mContentWidth = 0; 1543 mContentHeight = 0; 1544 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1545 } 1546 1547 /** 1548 * Return a new picture that captures the current display of the webview. 1549 * This is a copy of the display, and will be unaffected if the webview 1550 * later loads a different URL. 1551 * 1552 * @return a picture containing the current contents of the view. Note this 1553 * picture is of the entire document, and is not restricted to the 1554 * bounds of the view. 1555 */ 1556 public Picture capturePicture() { 1557 if (null == mWebViewCore) return null; // check for out of memory tab 1558 return mWebViewCore.copyContentPicture(); 1559 } 1560 1561 /** 1562 * Return true if the browser is displaying a TextView for text input. 1563 */ 1564 private boolean inEditingMode() { 1565 return mWebTextView != null && mWebTextView.getParent() != null 1566 && mWebTextView.hasFocus(); 1567 } 1568 1569 private void clearTextEntry() { 1570 if (inEditingMode()) { 1571 mWebTextView.remove(); 1572 } 1573 } 1574 1575 /** 1576 * Return the current scale of the WebView 1577 * @return The current scale. 1578 */ 1579 public float getScale() { 1580 return mActualScale; 1581 } 1582 1583 /** 1584 * Set the initial scale for the WebView. 0 means default. If 1585 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1586 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1587 * WebView starts will this value as initial scale. 1588 * 1589 * @param scaleInPercent The initial scale in percent. 1590 */ 1591 public void setInitialScale(int scaleInPercent) { 1592 mInitialScale = scaleInPercent; 1593 } 1594 1595 /** 1596 * Invoke the graphical zoom picker widget for this WebView. This will 1597 * result in the zoom widget appearing on the screen to control the zoom 1598 * level of this WebView. 1599 */ 1600 public void invokeZoomPicker() { 1601 if (!getSettings().supportZoom()) { 1602 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1603 return; 1604 } 1605 clearTextEntry(); 1606 if (getSettings().getBuiltInZoomControls()) { 1607 mZoomButtonsController.setVisible(true); 1608 } else { 1609 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1610 mPrivateHandler.postDelayed(mZoomControlRunnable, 1611 ZOOM_CONTROLS_TIMEOUT); 1612 } 1613 } 1614 1615 /** 1616 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1617 * is found and the anchor has a non-javascript url, the HitTestResult type 1618 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1619 * anchor does not have a url or if it is a javascript url, the type will 1620 * be UNKNOWN_TYPE and the url has to be retrieved through 1621 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1622 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1623 * the "extra" field. A type of 1624 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1625 * a child node. If a phone number is found, the HitTestResult type is set 1626 * to PHONE_TYPE and the phone number is set in the "extra" field of 1627 * HitTestResult. If a map address is found, the HitTestResult type is set 1628 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1629 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1630 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1631 * HitTestResult type is set to UNKNOWN_TYPE. 1632 */ 1633 public HitTestResult getHitTestResult() { 1634 if (mNativeClass == 0) { 1635 return null; 1636 } 1637 1638 HitTestResult result = new HitTestResult(); 1639 if (nativeHasCursorNode()) { 1640 if (nativeCursorIsTextInput()) { 1641 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1642 } else { 1643 String text = nativeCursorText(); 1644 if (text != null) { 1645 if (text.startsWith(SCHEME_TEL)) { 1646 result.setType(HitTestResult.PHONE_TYPE); 1647 result.setExtra(text.substring(SCHEME_TEL.length())); 1648 } else if (text.startsWith(SCHEME_MAILTO)) { 1649 result.setType(HitTestResult.EMAIL_TYPE); 1650 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1651 } else if (text.startsWith(SCHEME_GEO)) { 1652 result.setType(HitTestResult.GEO_TYPE); 1653 result.setExtra(URLDecoder.decode(text 1654 .substring(SCHEME_GEO.length()))); 1655 } else if (nativeCursorIsAnchor()) { 1656 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1657 result.setExtra(text); 1658 } 1659 } 1660 } 1661 } 1662 int type = result.getType(); 1663 if (type == HitTestResult.UNKNOWN_TYPE 1664 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1665 // Now check to see if it is an image. 1666 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1667 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1668 String text = nativeImageURI(contentX, contentY); 1669 if (text != null) { 1670 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1671 HitTestResult.IMAGE_TYPE : 1672 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1673 result.setExtra(text); 1674 } 1675 } 1676 return result; 1677 } 1678 1679 /** 1680 * Request the href of an anchor element due to getFocusNodePath returning 1681 * "href." If hrefMsg is null, this method returns immediately and does not 1682 * dispatch hrefMsg to its target. 1683 * 1684 * @param hrefMsg This message will be dispatched with the result of the 1685 * request as the data member with "url" as key. The result can 1686 * be null. 1687 */ 1688 // FIXME: API change required to change the name of this function. We now 1689 // look at the cursor node, and not the focus node. Also, what is 1690 // getFocusNodePath? 1691 public void requestFocusNodeHref(Message hrefMsg) { 1692 if (hrefMsg == null || mNativeClass == 0) { 1693 return; 1694 } 1695 if (nativeCursorIsAnchor()) { 1696 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1697 nativeCursorFramePointer(), nativeCursorNodePointer(), 1698 hrefMsg); 1699 } 1700 } 1701 1702 /** 1703 * Request the url of the image last touched by the user. msg will be sent 1704 * to its target with a String representing the url as its object. 1705 * 1706 * @param msg This message will be dispatched with the result of the request 1707 * as the data member with "url" as key. The result can be null. 1708 */ 1709 public void requestImageRef(Message msg) { 1710 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1711 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1712 String ref = nativeImageURI(contentX, contentY); 1713 Bundle data = msg.getData(); 1714 data.putString("url", ref); 1715 msg.setData(data); 1716 msg.sendToTarget(); 1717 } 1718 1719 private static int pinLoc(int x, int viewMax, int docMax) { 1720// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1721 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1722 // pin the short document to the top/left of the screen 1723 x = 0; 1724// Log.d(LOGTAG, "--- center " + x); 1725 } else if (x < 0) { 1726 x = 0; 1727// Log.d(LOGTAG, "--- zero"); 1728 } else if (x + viewMax > docMax) { 1729 x = docMax - viewMax; 1730// Log.d(LOGTAG, "--- pin " + x); 1731 } 1732 return x; 1733 } 1734 1735 // Expects x in view coordinates 1736 private int pinLocX(int x) { 1737 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1738 } 1739 1740 // Expects y in view coordinates 1741 private int pinLocY(int y) { 1742 int titleH = getTitleHeight(); 1743 // if the titlebar is still visible, just pin against 0 1744 if (y <= titleH) { 1745 return Math.max(y, 0); 1746 } 1747 // convert to 0-based coordinate (subtract the title height) 1748 // pin(), and then add the title height back in 1749 return pinLoc(y - titleH, getViewHeight(), 1750 computeVerticalScrollRange()) + titleH; 1751 } 1752 1753 /** 1754 * A title bar which is embedded in this WebView, and scrolls along with it 1755 * vertically, but not horizontally. 1756 */ 1757 private View mTitleBar; 1758 1759 /** 1760 * Since we draw the title bar ourselves, we removed the shadow from the 1761 * browser's activity. We do want a shadow at the bottom of the title bar, 1762 * or at the top of the screen if the title bar is not visible. This 1763 * drawable serves that purpose. 1764 */ 1765 private Drawable mTitleShadow; 1766 1767 /** 1768 * Add or remove a title bar to be embedded into the WebView, and scroll 1769 * along with it vertically, while remaining in view horizontally. Pass 1770 * null to remove the title bar from the WebView, and return to drawing 1771 * the WebView normally without translating to account for the title bar. 1772 * @hide 1773 */ 1774 public void setEmbeddedTitleBar(View v) { 1775 if (mTitleBar == v) return; 1776 if (mTitleBar != null) { 1777 removeView(mTitleBar); 1778 } 1779 if (null != v) { 1780 addView(v, new AbsoluteLayout.LayoutParams( 1781 ViewGroup.LayoutParams.FILL_PARENT, 1782 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1783 if (mTitleShadow == null) { 1784 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1785 com.android.internal.R.drawable.title_bar_shadow); 1786 } 1787 } 1788 mTitleBar = v; 1789 } 1790 1791 /** 1792 * Given a distance in view space, convert it to content space. Note: this 1793 * does not reflect translation, just scaling, so this should not be called 1794 * with coordinates, but should be called for dimensions like width or 1795 * height. 1796 */ 1797 private int viewToContentDimension(int d) { 1798 return Math.round(d * mInvActualScale); 1799 } 1800 1801 /** 1802 * Given an x coordinate in view space, convert it to content space. Also 1803 * may be used for absolute heights (such as for the WebTextView's 1804 * textSize, which is unaffected by the height of the title bar). 1805 */ 1806 /*package*/ int viewToContentX(int x) { 1807 return viewToContentDimension(x); 1808 } 1809 1810 /** 1811 * Given a y coordinate in view space, convert it to content space. 1812 * Takes into account the height of the title bar if there is one 1813 * embedded into the WebView. 1814 */ 1815 /*package*/ int viewToContentY(int y) { 1816 return viewToContentDimension(y - getTitleHeight()); 1817 } 1818 1819 /** 1820 * Given a distance in content space, convert it to view space. Note: this 1821 * does not reflect translation, just scaling, so this should not be called 1822 * with coordinates, but should be called for dimensions like width or 1823 * height. 1824 */ 1825 /*package*/ int contentToViewDimension(int d) { 1826 return Math.round(d * mActualScale); 1827 } 1828 1829 /** 1830 * Given an x coordinate in content space, convert it to view 1831 * space. 1832 */ 1833 /*package*/ int contentToViewX(int x) { 1834 return contentToViewDimension(x); 1835 } 1836 1837 /** 1838 * Given a y coordinate in content space, convert it to view 1839 * space. Takes into account the height of the title bar. 1840 */ 1841 /*package*/ int contentToViewY(int y) { 1842 return contentToViewDimension(y) + getTitleHeight(); 1843 } 1844 1845 private Rect contentToViewRect(Rect x) { 1846 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 1847 contentToViewX(x.right), contentToViewY(x.bottom)); 1848 } 1849 1850 /* To invalidate a rectangle in content coordinates, we need to transform 1851 the rect into view coordinates, so we can then call invalidate(...). 1852 1853 Normally, we would just call contentToView[XY](...), which eventually 1854 calls Math.round(coordinate * mActualScale). However, for invalidates, 1855 we need to account for the slop that occurs with antialiasing. To 1856 address that, we are a little more liberal in the size of the rect that 1857 we invalidate. 1858 1859 This liberal calculation calls floor() for the top/left, and ceil() for 1860 the bottom/right coordinates. This catches the possible extra pixels of 1861 antialiasing that we might have missed with just round(). 1862 */ 1863 1864 // Called by JNI to invalidate the View, given rectangle coordinates in 1865 // content space 1866 private void viewInvalidate(int l, int t, int r, int b) { 1867 final float scale = mActualScale; 1868 final int dy = getTitleHeight(); 1869 invalidate((int)Math.floor(l * scale), 1870 (int)Math.floor(t * scale) + dy, 1871 (int)Math.ceil(r * scale), 1872 (int)Math.ceil(b * scale) + dy); 1873 } 1874 1875 // Called by JNI to invalidate the View after a delay, given rectangle 1876 // coordinates in content space 1877 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1878 final float scale = mActualScale; 1879 final int dy = getTitleHeight(); 1880 postInvalidateDelayed(delay, 1881 (int)Math.floor(l * scale), 1882 (int)Math.floor(t * scale) + dy, 1883 (int)Math.ceil(r * scale), 1884 (int)Math.ceil(b * scale) + dy); 1885 } 1886 1887 private void invalidateContentRect(Rect r) { 1888 viewInvalidate(r.left, r.top, r.right, r.bottom); 1889 } 1890 1891 // stop the scroll animation, and don't let a subsequent fling add 1892 // to the existing velocity 1893 private void abortAnimation() { 1894 mScroller.abortAnimation(); 1895 mLastVelocity = 0; 1896 } 1897 1898 /* call from webcoreview.draw(), so we're still executing in the UI thread 1899 */ 1900 private void recordNewContentSize(int w, int h, boolean updateLayout) { 1901 1902 // premature data from webkit, ignore 1903 if ((w | h) == 0) { 1904 return; 1905 } 1906 1907 // don't abort a scroll animation if we didn't change anything 1908 if (mContentWidth != w || mContentHeight != h) { 1909 // record new dimensions 1910 mContentWidth = w; 1911 mContentHeight = h; 1912 // If history Picture is drawn, don't update scroll. They will be 1913 // updated when we get out of that mode. 1914 if (!mDrawHistory) { 1915 // repin our scroll, taking into account the new content size 1916 int oldX = mScrollX; 1917 int oldY = mScrollY; 1918 mScrollX = pinLocX(mScrollX); 1919 mScrollY = pinLocY(mScrollY); 1920 // android.util.Log.d("skia", "recordNewContentSize - 1921 // abortAnimation"); 1922 abortAnimation(); // just in case 1923 if (oldX != mScrollX || oldY != mScrollY) { 1924 sendOurVisibleRect(); 1925 } 1926 } 1927 } 1928 contentSizeChanged(updateLayout); 1929 } 1930 1931 private void setNewZoomScale(float scale, boolean force) { 1932 if (scale < mMinZoomScale) { 1933 scale = mMinZoomScale; 1934 } else if (scale > mMaxZoomScale) { 1935 scale = mMaxZoomScale; 1936 } 1937 if (scale != mActualScale || force) { 1938 if (mDrawHistory) { 1939 // If history Picture is drawn, don't update scroll. They will 1940 // be updated when we get out of that mode. 1941 if (scale != mActualScale && !mPreviewZoomOnly) { 1942 mCallbackProxy.onScaleChanged(mActualScale, scale); 1943 } 1944 mActualScale = scale; 1945 mInvActualScale = 1 / scale; 1946 if (!mPreviewZoomOnly) { 1947 sendViewSizeZoom(); 1948 } 1949 } else { 1950 // update our scroll so we don't appear to jump 1951 // i.e. keep the center of the doc in the center of the view 1952 1953 int oldX = mScrollX; 1954 int oldY = mScrollY; 1955 float ratio = scale * mInvActualScale; // old inverse 1956 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 1957 float sy = ratio * oldY + (ratio - 1) 1958 * (mZoomCenterY - getTitleHeight()); 1959 1960 // now update our new scale and inverse 1961 if (scale != mActualScale && !mPreviewZoomOnly) { 1962 mCallbackProxy.onScaleChanged(mActualScale, scale); 1963 } 1964 mActualScale = scale; 1965 mInvActualScale = 1 / scale; 1966 1967 // Scale all the child views 1968 mViewManager.scaleAll(); 1969 1970 // as we don't have animation for scaling, don't do animation 1971 // for scrolling, as it causes weird intermediate state 1972 // pinScrollTo(Math.round(sx), Math.round(sy)); 1973 mScrollX = pinLocX(Math.round(sx)); 1974 mScrollY = pinLocY(Math.round(sy)); 1975 1976 if (!mPreviewZoomOnly) { 1977 sendViewSizeZoom(); 1978 sendOurVisibleRect(); 1979 } 1980 } 1981 } 1982 } 1983 1984 // Used to avoid sending many visible rect messages. 1985 private Rect mLastVisibleRectSent; 1986 private Rect mLastGlobalRect; 1987 1988 private Rect sendOurVisibleRect() { 1989 Rect rect = new Rect(); 1990 calcOurContentVisibleRect(rect); 1991 // Rect.equals() checks for null input. 1992 if (!rect.equals(mLastVisibleRectSent)) { 1993 Point pos = new Point(rect.left, rect.top); 1994 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 1995 nativeMoveGeneration(), 0, pos); 1996 mLastVisibleRectSent = rect; 1997 } 1998 Rect globalRect = new Rect(); 1999 if (getGlobalVisibleRect(globalRect) 2000 && !globalRect.equals(mLastGlobalRect)) { 2001 if (DebugFlags.WEB_VIEW) { 2002 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2003 + globalRect.top + ",r=" + globalRect.right + ",b=" 2004 + globalRect.bottom); 2005 } 2006 // TODO: the global offset is only used by windowRect() 2007 // in ChromeClientAndroid ; other clients such as touch 2008 // and mouse events could return view + screen relative points. 2009 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2010 mLastGlobalRect = globalRect; 2011 } 2012 return rect; 2013 } 2014 2015 // Sets r to be the visible rectangle of our webview in view coordinates 2016 private void calcOurVisibleRect(Rect r) { 2017 Point p = new Point(); 2018 getGlobalVisibleRect(r, p); 2019 r.offset(-p.x, -p.y); 2020 if (mFindIsUp) { 2021 r.bottom -= mFindHeight; 2022 } 2023 } 2024 2025 // Sets r to be our visible rectangle in content coordinates 2026 private void calcOurContentVisibleRect(Rect r) { 2027 calcOurVisibleRect(r); 2028 r.left = viewToContentX(r.left); 2029 // viewToContentY will remove the total height of the title bar. Add 2030 // the visible height back in to account for the fact that if the title 2031 // bar is partially visible, the part of the visible rect which is 2032 // displaying our content is displaced by that amount. 2033 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2034 r.right = viewToContentX(r.right); 2035 r.bottom = viewToContentY(r.bottom); 2036 } 2037 2038 static class ViewSizeData { 2039 int mWidth; 2040 int mHeight; 2041 int mTextWrapWidth; 2042 float mScale; 2043 boolean mIgnoreHeight; 2044 } 2045 2046 /** 2047 * Compute unzoomed width and height, and if they differ from the last 2048 * values we sent, send them to webkit (to be used has new viewport) 2049 * 2050 * @return true if new values were sent 2051 */ 2052 private boolean sendViewSizeZoom() { 2053 int viewWidth = getViewWidth(); 2054 int newWidth = Math.round(viewWidth * mInvActualScale); 2055 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2056 /* 2057 * Because the native side may have already done a layout before the 2058 * View system was able to measure us, we have to send a height of 0 to 2059 * remove excess whitespace when we grow our width. This will trigger a 2060 * layout and a change in content size. This content size change will 2061 * mean that contentSizeChanged will either call this method directly or 2062 * indirectly from onSizeChanged. 2063 */ 2064 if (newWidth > mLastWidthSent && mWrapContent) { 2065 newHeight = 0; 2066 } 2067 // Avoid sending another message if the dimensions have not changed. 2068 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2069 ViewSizeData data = new ViewSizeData(); 2070 data.mWidth = newWidth; 2071 data.mHeight = newHeight; 2072 // while in zoom overview mode, the text are wrapped to the screen 2073 // width matching mLastScale. So that we don't trigger re-flow while 2074 // toggling between overview mode and normal mode. 2075 data.mTextWrapWidth = mInZoomOverview ? Math.round(viewWidth 2076 / mLastScale) : newWidth; 2077 data.mScale = mActualScale; 2078 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2079 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2080 mLastWidthSent = newWidth; 2081 mLastHeightSent = newHeight; 2082 return true; 2083 } 2084 return false; 2085 } 2086 2087 @Override 2088 protected int computeHorizontalScrollRange() { 2089 if (mDrawHistory) { 2090 return mHistoryWidth; 2091 } else { 2092 // to avoid rounding error caused unnecessary scrollbar, use floor 2093 return (int) Math.floor(mContentWidth * mActualScale); 2094 } 2095 } 2096 2097 @Override 2098 protected int computeVerticalScrollRange() { 2099 if (mDrawHistory) { 2100 return mHistoryHeight; 2101 } else { 2102 // to avoid rounding error caused unnecessary scrollbar, use floor 2103 return (int) Math.floor(mContentHeight * mActualScale); 2104 } 2105 } 2106 2107 @Override 2108 protected int computeVerticalScrollOffset() { 2109 return Math.max(mScrollY - getTitleHeight(), 0); 2110 } 2111 2112 @Override 2113 protected int computeVerticalScrollExtent() { 2114 return getViewHeight(); 2115 } 2116 2117 /** @hide */ 2118 @Override 2119 protected void onDrawVerticalScrollBar(Canvas canvas, 2120 Drawable scrollBar, 2121 int l, int t, int r, int b) { 2122 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2123 scrollBar.draw(canvas); 2124 } 2125 2126 /** 2127 * Get the url for the current page. This is not always the same as the url 2128 * passed to WebViewClient.onPageStarted because although the load for 2129 * that url has begun, the current page may not have changed. 2130 * @return The url for the current page. 2131 */ 2132 public String getUrl() { 2133 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2134 return h != null ? h.getUrl() : null; 2135 } 2136 2137 /** 2138 * Get the original url for the current page. This is not always the same 2139 * as the url passed to WebViewClient.onPageStarted because although the 2140 * load for that url has begun, the current page may not have changed. 2141 * Also, there may have been redirects resulting in a different url to that 2142 * originally requested. 2143 * @return The url that was originally requested for the current page. 2144 */ 2145 public String getOriginalUrl() { 2146 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2147 return h != null ? h.getOriginalUrl() : null; 2148 } 2149 2150 /** 2151 * Get the title for the current page. This is the title of the current page 2152 * until WebViewClient.onReceivedTitle is called. 2153 * @return The title for the current page. 2154 */ 2155 public String getTitle() { 2156 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2157 return h != null ? h.getTitle() : null; 2158 } 2159 2160 /** 2161 * Get the favicon for the current page. This is the favicon of the current 2162 * page until WebViewClient.onReceivedIcon is called. 2163 * @return The favicon for the current page. 2164 */ 2165 public Bitmap getFavicon() { 2166 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2167 return h != null ? h.getFavicon() : null; 2168 } 2169 2170 /** 2171 * Get the touch icon url for the apple-touch-icon <link> element. 2172 * @hide 2173 */ 2174 public String getTouchIconUrl() { 2175 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2176 return h != null ? h.getTouchIconUrl() : null; 2177 } 2178 2179 /** 2180 * Get the progress for the current page. 2181 * @return The progress for the current page between 0 and 100. 2182 */ 2183 public int getProgress() { 2184 return mCallbackProxy.getProgress(); 2185 } 2186 2187 /** 2188 * @return the height of the HTML content. 2189 */ 2190 public int getContentHeight() { 2191 return mContentHeight; 2192 } 2193 2194 /** 2195 * @return the width of the HTML content. 2196 * @hide 2197 */ 2198 public int getContentWidth() { 2199 return mContentWidth; 2200 } 2201 2202 /** 2203 * Pause all layout, parsing, and javascript timers for all webviews. This 2204 * is a global requests, not restricted to just this webview. This can be 2205 * useful if the application has been paused. 2206 */ 2207 public void pauseTimers() { 2208 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2209 } 2210 2211 /** 2212 * Resume all layout, parsing, and javascript timers for all webviews. 2213 * This will resume dispatching all timers. 2214 */ 2215 public void resumeTimers() { 2216 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2217 } 2218 2219 /** 2220 * Call this to pause any extra processing associated with this view and 2221 * its associated DOM/plugins/javascript/etc. For example, if the view is 2222 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2223 * network traffic. When the view is again "active", call onResume(). 2224 * 2225 * Note that this differs from pauseTimers(), which affects all views/DOMs 2226 * @hide 2227 */ 2228 public void onPause() { 2229 if (!mIsPaused) { 2230 mIsPaused = true; 2231 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2232 } 2233 } 2234 2235 /** 2236 * Call this to balanace a previous call to onPause() 2237 * @hide 2238 */ 2239 public void onResume() { 2240 if (mIsPaused) { 2241 mIsPaused = false; 2242 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2243 } 2244 } 2245 2246 /** 2247 * Returns true if the view is paused, meaning onPause() was called. Calling 2248 * onResume() sets the paused state back to false. 2249 * @hide 2250 */ 2251 public boolean isPaused() { 2252 return mIsPaused; 2253 } 2254 2255 /** 2256 * Call this to inform the view that memory is low so that it can 2257 * free any available memory. 2258 * @hide 2259 */ 2260 public void freeMemory() { 2261 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2262 } 2263 2264 /** 2265 * Clear the resource cache. Note that the cache is per-application, so 2266 * this will clear the cache for all WebViews used. 2267 * 2268 * @param includeDiskFiles If false, only the RAM cache is cleared. 2269 */ 2270 public void clearCache(boolean includeDiskFiles) { 2271 // Note: this really needs to be a static method as it clears cache for all 2272 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2273 // we can't make this static. 2274 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2275 includeDiskFiles ? 1 : 0, 0); 2276 } 2277 2278 /** 2279 * Make sure that clearing the form data removes the adapter from the 2280 * currently focused textfield if there is one. 2281 */ 2282 public void clearFormData() { 2283 if (inEditingMode()) { 2284 AutoCompleteAdapter adapter = null; 2285 mWebTextView.setAdapterCustom(adapter); 2286 } 2287 } 2288 2289 /** 2290 * Tell the WebView to clear its internal back/forward list. 2291 */ 2292 public void clearHistory() { 2293 mCallbackProxy.getBackForwardList().setClearPending(); 2294 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2295 } 2296 2297 /** 2298 * Clear the SSL preferences table stored in response to proceeding with SSL 2299 * certificate errors. 2300 */ 2301 public void clearSslPreferences() { 2302 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2303 } 2304 2305 /** 2306 * Return the WebBackForwardList for this WebView. This contains the 2307 * back/forward list for use in querying each item in the history stack. 2308 * This is a copy of the private WebBackForwardList so it contains only a 2309 * snapshot of the current state. Multiple calls to this method may return 2310 * different objects. The object returned from this method will not be 2311 * updated to reflect any new state. 2312 */ 2313 public WebBackForwardList copyBackForwardList() { 2314 return mCallbackProxy.getBackForwardList().clone(); 2315 } 2316 2317 /* 2318 * Highlight and scroll to the next occurance of String in findAll. 2319 * Wraps the page infinitely, and scrolls. Must be called after 2320 * calling findAll. 2321 * 2322 * @param forward Direction to search. 2323 */ 2324 public void findNext(boolean forward) { 2325 nativeFindNext(forward); 2326 } 2327 2328 /* 2329 * Find all instances of find on the page and highlight them. 2330 * @param find String to find. 2331 * @return int The number of occurances of the String "find" 2332 * that were found. 2333 */ 2334 public int findAll(String find) { 2335 if (mFindIsUp == false) { 2336 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2337 false); 2338 mFindIsUp = true; 2339 } 2340 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2341 invalidate(); 2342 return result; 2343 } 2344 2345 // Used to know whether the find dialog is open. Affects whether 2346 // or not we draw the highlights for matches. 2347 private boolean mFindIsUp; 2348 private int mFindHeight; 2349 2350 /** 2351 * Return the first substring consisting of the address of a physical 2352 * location. Currently, only addresses in the United States are detected, 2353 * and consist of: 2354 * - a house number 2355 * - a street name 2356 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2357 * - a city name 2358 * - a state or territory, either spelled out or two-letter abbr. 2359 * - an optional 5 digit or 9 digit zip code. 2360 * 2361 * All names must be correctly capitalized, and the zip code, if present, 2362 * must be valid for the state. The street type must be a standard USPS 2363 * spelling or abbreviation. The state or territory must also be spelled 2364 * or abbreviated using USPS standards. The house number may not exceed 2365 * five digits. 2366 * @param addr The string to search for addresses. 2367 * 2368 * @return the address, or if no address is found, return null. 2369 */ 2370 public static String findAddress(String addr) { 2371 return findAddress(addr, false); 2372 } 2373 2374 /** 2375 * @hide 2376 * Return the first substring consisting of the address of a physical 2377 * location. Currently, only addresses in the United States are detected, 2378 * and consist of: 2379 * - a house number 2380 * - a street name 2381 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2382 * - a city name 2383 * - a state or territory, either spelled out or two-letter abbr. 2384 * - an optional 5 digit or 9 digit zip code. 2385 * 2386 * Names are optionally capitalized, and the zip code, if present, 2387 * must be valid for the state. The street type must be a standard USPS 2388 * spelling or abbreviation. The state or territory must also be spelled 2389 * or abbreviated using USPS standards. The house number may not exceed 2390 * five digits. 2391 * @param addr The string to search for addresses. 2392 * @param caseInsensitive addr Set to true to make search ignore case. 2393 * 2394 * @return the address, or if no address is found, return null. 2395 */ 2396 public static String findAddress(String addr, boolean caseInsensitive) { 2397 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2398 } 2399 2400 /* 2401 * Clear the highlighting surrounding text matches created by findAll. 2402 */ 2403 public void clearMatches() { 2404 if (mFindIsUp) { 2405 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2406 false); 2407 mFindIsUp = false; 2408 } 2409 nativeSetFindIsDown(); 2410 // Now that the dialog has been removed, ensure that we scroll to a 2411 // location that is not beyond the end of the page. 2412 pinScrollTo(mScrollX, mScrollY, false, 0); 2413 invalidate(); 2414 } 2415 2416 /** 2417 * @hide 2418 */ 2419 public void setFindDialogHeight(int height) { 2420 if (DebugFlags.WEB_VIEW) { 2421 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2422 } 2423 mFindHeight = height; 2424 } 2425 2426 /** 2427 * Query the document to see if it contains any image references. The 2428 * message object will be dispatched with arg1 being set to 1 if images 2429 * were found and 0 if the document does not reference any images. 2430 * @param response The message that will be dispatched with the result. 2431 */ 2432 public void documentHasImages(Message response) { 2433 if (response == null) { 2434 return; 2435 } 2436 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2437 } 2438 2439 @Override 2440 public void computeScroll() { 2441 if (mScroller.computeScrollOffset()) { 2442 int oldX = mScrollX; 2443 int oldY = mScrollY; 2444 mScrollX = mScroller.getCurrX(); 2445 mScrollY = mScroller.getCurrY(); 2446 postInvalidate(); // So we draw again 2447 if (oldX != mScrollX || oldY != mScrollY) { 2448 // as onScrollChanged() is not called, sendOurVisibleRect() 2449 // needs to be call explicitly 2450 sendOurVisibleRect(); 2451 } 2452 } else { 2453 super.computeScroll(); 2454 } 2455 } 2456 2457 private static int computeDuration(int dx, int dy) { 2458 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2459 int duration = distance * 1000 / STD_SPEED; 2460 return Math.min(duration, MAX_DURATION); 2461 } 2462 2463 // helper to pin the scrollBy parameters (already in view coordinates) 2464 // returns true if the scroll was changed 2465 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2466 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2467 } 2468 // helper to pin the scrollTo parameters (already in view coordinates) 2469 // returns true if the scroll was changed 2470 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2471 x = pinLocX(x); 2472 y = pinLocY(y); 2473 int dx = x - mScrollX; 2474 int dy = y - mScrollY; 2475 2476 if ((dx | dy) == 0) { 2477 return false; 2478 } 2479 if (animate) { 2480 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2481 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2482 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2483 awakenScrollBars(mScroller.getDuration()); 2484 invalidate(); 2485 } else { 2486 abortAnimation(); // just in case 2487 scrollTo(x, y); 2488 } 2489 return true; 2490 } 2491 2492 // Scale from content to view coordinates, and pin. 2493 // Also called by jni webview.cpp 2494 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2495 if (mDrawHistory) { 2496 // disallow WebView to change the scroll position as History Picture 2497 // is used in the view system. 2498 // TODO: as we switchOutDrawHistory when trackball or navigation 2499 // keys are hit, this should be safe. Right? 2500 return false; 2501 } 2502 cx = contentToViewDimension(cx); 2503 cy = contentToViewDimension(cy); 2504 if (mHeightCanMeasure) { 2505 // move our visible rect according to scroll request 2506 if (cy != 0) { 2507 Rect tempRect = new Rect(); 2508 calcOurVisibleRect(tempRect); 2509 tempRect.offset(cx, cy); 2510 requestRectangleOnScreen(tempRect); 2511 } 2512 // FIXME: We scroll horizontally no matter what because currently 2513 // ScrollView and ListView will not scroll horizontally. 2514 // FIXME: Why do we only scroll horizontally if there is no 2515 // vertical scroll? 2516// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2517 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2518 } else { 2519 return pinScrollBy(cx, cy, animate, 0); 2520 } 2521 } 2522 2523 // scale from content to view coordinates, and pin 2524 // return true if pin caused the final x/y different than the request cx/cy, 2525 // and a future scroll may reach the request cx/cy after our size has 2526 // changed 2527 // return false if the view scroll to the exact position as it is requested, 2528 // where negative numbers are taken to mean 0 2529 private boolean setContentScrollTo(int cx, int cy) { 2530 if (mDrawHistory) { 2531 // disallow WebView to change the scroll position as History Picture 2532 // is used in the view system. 2533 // One known case where this is called is that WebCore tries to 2534 // restore the scroll position. As history Picture already uses the 2535 // saved scroll position, it is ok to skip this. 2536 return false; 2537 } 2538 int vx; 2539 int vy; 2540 if ((cx | cy) == 0) { 2541 // If the page is being scrolled to (0,0), do not add in the title 2542 // bar's height, and simply scroll to (0,0). (The only other work 2543 // in contentToView_ is to multiply, so this would not change 0.) 2544 vx = 0; 2545 vy = 0; 2546 } else { 2547 vx = contentToViewX(cx); 2548 vy = contentToViewY(cy); 2549 } 2550// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2551// vx + " " + vy + "]"); 2552 // Some mobile sites attempt to scroll the title bar off the page by 2553 // scrolling to (0,1). If we are at the top left corner of the 2554 // page, assume this is an attempt to scroll off the title bar, and 2555 // animate the title bar off screen slowly enough that the user can see 2556 // it. 2557 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0) { 2558 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2559 // Since we are animating, we have not yet reached the desired 2560 // scroll position. Do not return true to request another attempt 2561 return false; 2562 } 2563 pinScrollTo(vx, vy, false, 0); 2564 // If the request was to scroll to a negative coordinate, treat it as if 2565 // it was a request to scroll to 0 2566 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2567 return true; 2568 } else { 2569 return false; 2570 } 2571 } 2572 2573 // scale from content to view coordinates, and pin 2574 private void spawnContentScrollTo(int cx, int cy) { 2575 if (mDrawHistory) { 2576 // disallow WebView to change the scroll position as History Picture 2577 // is used in the view system. 2578 return; 2579 } 2580 int vx = contentToViewX(cx); 2581 int vy = contentToViewY(cy); 2582 pinScrollTo(vx, vy, true, 0); 2583 } 2584 2585 /** 2586 * These are from webkit, and are in content coordinate system (unzoomed) 2587 */ 2588 private void contentSizeChanged(boolean updateLayout) { 2589 // suppress 0,0 since we usually see real dimensions soon after 2590 // this avoids drawing the prev content in a funny place. If we find a 2591 // way to consolidate these notifications, this check may become 2592 // obsolete 2593 if ((mContentWidth | mContentHeight) == 0) { 2594 return; 2595 } 2596 2597 if (mHeightCanMeasure) { 2598 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2599 && updateLayout) { 2600 requestLayout(); 2601 } 2602 } else if (mWidthCanMeasure) { 2603 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2604 && updateLayout) { 2605 requestLayout(); 2606 } 2607 } else { 2608 // If we don't request a layout, try to send our view size to the 2609 // native side to ensure that WebCore has the correct dimensions. 2610 sendViewSizeZoom(); 2611 } 2612 } 2613 2614 /** 2615 * Set the WebViewClient that will receive various notifications and 2616 * requests. This will replace the current handler. 2617 * @param client An implementation of WebViewClient. 2618 */ 2619 public void setWebViewClient(WebViewClient client) { 2620 mCallbackProxy.setWebViewClient(client); 2621 } 2622 2623 /** 2624 * Register the interface to be used when content can not be handled by 2625 * the rendering engine, and should be downloaded instead. This will replace 2626 * the current handler. 2627 * @param listener An implementation of DownloadListener. 2628 */ 2629 public void setDownloadListener(DownloadListener listener) { 2630 mCallbackProxy.setDownloadListener(listener); 2631 } 2632 2633 /** 2634 * Set the chrome handler. This is an implementation of WebChromeClient for 2635 * use in handling Javascript dialogs, favicons, titles, and the progress. 2636 * This will replace the current handler. 2637 * @param client An implementation of WebChromeClient. 2638 */ 2639 public void setWebChromeClient(WebChromeClient client) { 2640 mCallbackProxy.setWebChromeClient(client); 2641 } 2642 2643 /** 2644 * Gets the chrome handler. 2645 * @return the current WebChromeClient instance. 2646 * 2647 * @hide API council approval. 2648 */ 2649 public WebChromeClient getWebChromeClient() { 2650 return mCallbackProxy.getWebChromeClient(); 2651 } 2652 2653 /** 2654 * Set the Picture listener. This is an interface used to receive 2655 * notifications of a new Picture. 2656 * @param listener An implementation of WebView.PictureListener. 2657 */ 2658 public void setPictureListener(PictureListener listener) { 2659 mPictureListener = listener; 2660 } 2661 2662 /** 2663 * {@hide} 2664 */ 2665 /* FIXME: Debug only! Remove for SDK! */ 2666 public void externalRepresentation(Message callback) { 2667 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2668 } 2669 2670 /** 2671 * {@hide} 2672 */ 2673 /* FIXME: Debug only! Remove for SDK! */ 2674 public void documentAsText(Message callback) { 2675 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2676 } 2677 2678 /** 2679 * Use this function to bind an object to Javascript so that the 2680 * methods can be accessed from Javascript. 2681 * <p><strong>IMPORTANT:</strong> 2682 * <ul> 2683 * <li> Using addJavascriptInterface() allows JavaScript to control your 2684 * application. This can be a very useful feature or a dangerous security 2685 * issue. When the HTML in the WebView is untrustworthy (for example, part 2686 * or all of the HTML is provided by some person or process), then an 2687 * attacker could inject HTML that will execute your code and possibly any 2688 * code of the attacker's choosing.<br> 2689 * Do not use addJavascriptInterface() unless all of the HTML in this 2690 * WebView was written by you.</li> 2691 * <li> The Java object that is bound runs in another thread and not in 2692 * the thread that it was constructed in.</li> 2693 * </ul></p> 2694 * @param obj The class instance to bind to Javascript 2695 * @param interfaceName The name to used to expose the class in Javascript 2696 */ 2697 public void addJavascriptInterface(Object obj, String interfaceName) { 2698 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2699 arg.mObject = obj; 2700 arg.mInterfaceName = interfaceName; 2701 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2702 } 2703 2704 /** 2705 * Return the WebSettings object used to control the settings for this 2706 * WebView. 2707 * @return A WebSettings object that can be used to control this WebView's 2708 * settings. 2709 */ 2710 public WebSettings getSettings() { 2711 return mWebViewCore.getSettings(); 2712 } 2713 2714 /** 2715 * Return the list of currently loaded plugins. 2716 * @return The list of currently loaded plugins. 2717 * 2718 * @deprecated This was used for Gears, which has been deprecated. 2719 */ 2720 @Deprecated 2721 public static synchronized PluginList getPluginList() { 2722 return null; 2723 } 2724 2725 /** 2726 * @deprecated This was used for Gears, which has been deprecated. 2727 */ 2728 @Deprecated 2729 public void refreshPlugins(boolean reloadOpenPages) { } 2730 2731 //------------------------------------------------------------------------- 2732 // Override View methods 2733 //------------------------------------------------------------------------- 2734 2735 @Override 2736 protected void finalize() throws Throwable { 2737 try { 2738 destroy(); 2739 } finally { 2740 super.finalize(); 2741 } 2742 } 2743 2744 @Override 2745 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 2746 if (child == mTitleBar) { 2747 // When drawing the title bar, move it horizontally to always show 2748 // at the top of the WebView. 2749 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 2750 } 2751 return super.drawChild(canvas, child, drawingTime); 2752 } 2753 2754 @Override 2755 protected void onDraw(Canvas canvas) { 2756 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2757 if (mNativeClass == 0) { 2758 return; 2759 } 2760 int saveCount = canvas.save(); 2761 if (mTitleBar != null) { 2762 canvas.translate(0, (int) mTitleBar.getHeight()); 2763 } 2764 // Update the buttons in the picture, so when we draw the picture 2765 // to the screen, they are in the correct state. 2766 // Tell the native side if user is a) touching the screen, 2767 // b) pressing the trackball down, or c) pressing the enter key 2768 // If the cursor is on a button, we need to draw it in the pressed 2769 // state. 2770 // If mNativeClass is 0, we should not reach here, so we do not 2771 // need to check it again. 2772 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2773 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2774 || mTrackballDown || mGotCenterDown, false); 2775 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2776 canvas.restoreToCount(saveCount); 2777 2778 // Now draw the shadow. 2779 if (mTitleBar != null) { 2780 int y = mScrollY + getVisibleTitleHeight(); 2781 int height = (int) (5f * getContext().getResources() 2782 .getDisplayMetrics().density); 2783 mTitleShadow.setBounds(mScrollX, y, mScrollX + getWidth(), 2784 y + height); 2785 mTitleShadow.draw(canvas); 2786 } 2787 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2788 invalidate(); 2789 } 2790 } 2791 2792 @Override 2793 public void setLayoutParams(ViewGroup.LayoutParams params) { 2794 if (params.height == LayoutParams.WRAP_CONTENT) { 2795 mWrapContent = true; 2796 } 2797 super.setLayoutParams(params); 2798 } 2799 2800 @Override 2801 public boolean performLongClick() { 2802 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 2803 // Send the click so that the textfield is in focus 2804 // FIXME: When we start respecting changes to the native textfield's 2805 // selection, need to make sure that this does not change it. 2806 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 2807 nativeCursorNodePointer()); 2808 rebuildWebTextView(); 2809 } 2810 if (inEditingMode()) { 2811 return mWebTextView.performLongClick(); 2812 } else { 2813 return super.performLongClick(); 2814 } 2815 } 2816 2817 boolean inAnimateZoom() { 2818 return mZoomScale != 0; 2819 } 2820 2821 /** 2822 * Need to adjust the WebTextView after a change in zoom, since mActualScale 2823 * has changed. This is especially important for password fields, which are 2824 * drawn by the WebTextView, since it conveys more information than what 2825 * webkit draws. Thus we need to reposition it to show in the correct 2826 * place. 2827 */ 2828 private boolean mNeedToAdjustWebTextView; 2829 2830 private void drawCoreAndCursorRing(Canvas canvas, int color, 2831 boolean drawCursorRing) { 2832 if (mDrawHistory) { 2833 canvas.scale(mActualScale, mActualScale); 2834 canvas.drawPicture(mHistoryPicture); 2835 return; 2836 } 2837 2838 boolean animateZoom = mZoomScale != 0; 2839 boolean animateScroll = !mScroller.isFinished() 2840 || mVelocityTracker != null; 2841 if (animateZoom) { 2842 float zoomScale; 2843 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 2844 if (interval < ZOOM_ANIMATION_LENGTH) { 2845 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 2846 zoomScale = 1.0f / (mInvInitialZoomScale 2847 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 2848 invalidate(); 2849 } else { 2850 zoomScale = mZoomScale; 2851 // set mZoomScale to be 0 as we have done animation 2852 mZoomScale = 0; 2853 // call invalidate() again to draw with the final filters 2854 invalidate(); 2855 if (mNeedToAdjustWebTextView) { 2856 mNeedToAdjustWebTextView = false; 2857 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 2858 contentToViewDimension( 2859 nativeFocusCandidateTextSize())); 2860 Rect bounds = nativeFocusCandidateNodeBounds(); 2861 Rect vBox = contentToViewRect(bounds); 2862 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 2863 vBox.height()); 2864 // If it is a password field, start drawing the 2865 // WebTextView once again. 2866 if (nativeFocusCandidateIsPassword()) { 2867 mWebTextView.setInPassword(true); 2868 } 2869 } 2870 } 2871 // calculate the intermediate scroll position. As we need to use 2872 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 2873 float scale = zoomScale * mInvInitialZoomScale; 2874 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 2875 - mZoomCenterX); 2876 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 2877 * zoomScale)) + mScrollX; 2878 int titleHeight = getTitleHeight(); 2879 int ty = Math.round(scale 2880 * (mInitialScrollY + mZoomCenterY - titleHeight) 2881 - (mZoomCenterY - titleHeight)); 2882 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 2883 - titleHeight, getViewHeight(), Math.round(mContentHeight 2884 * zoomScale)) + titleHeight) + mScrollY; 2885 canvas.translate(tx, ty); 2886 canvas.scale(zoomScale, zoomScale); 2887 if (inEditingMode() && !mNeedToAdjustWebTextView 2888 && mZoomScale != 0) { 2889 // The WebTextView is up. Keep track of this so we can adjust 2890 // its size and placement when we finish zooming 2891 mNeedToAdjustWebTextView = true; 2892 // If it is in password mode, turn it off so it does not draw 2893 // misplaced. 2894 if (nativeFocusCandidateIsPassword()) { 2895 mWebTextView.setInPassword(false); 2896 } 2897 } 2898 } else { 2899 canvas.scale(mActualScale, mActualScale); 2900 } 2901 2902 mWebViewCore.drawContentPicture(canvas, color, animateZoom, 2903 animateScroll); 2904 2905 if (mNativeClass == 0) return; 2906 if (mShiftIsPressed) { 2907 if (mTouchSelection) { 2908 nativeDrawSelectionRegion(canvas); 2909 } else { 2910 nativeDrawSelection(canvas, mSelectX, mSelectY, 2911 mExtendSelection); 2912 } 2913 } else if (drawCursorRing) { 2914 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 2915 mTouchMode = TOUCH_SHORTPRESS_MODE; 2916 HitTestResult hitTest = getHitTestResult(); 2917 if (hitTest != null && 2918 hitTest.mType != HitTestResult.UNKNOWN_TYPE) { 2919 mPrivateHandler.sendMessageDelayed(mPrivateHandler 2920 .obtainMessage(SWITCH_TO_LONGPRESS), 2921 LONG_PRESS_TIMEOUT); 2922 } 2923 } 2924 nativeDrawCursorRing(canvas); 2925 } 2926 // When the FindDialog is up, only draw the matches if we are not in 2927 // the process of scrolling them into view. 2928 if (mFindIsUp && !animateScroll) { 2929 nativeDrawMatches(canvas); 2930 } 2931 } 2932 2933 // draw history 2934 private boolean mDrawHistory = false; 2935 private Picture mHistoryPicture = null; 2936 private int mHistoryWidth = 0; 2937 private int mHistoryHeight = 0; 2938 2939 // Only check the flag, can be called from WebCore thread 2940 boolean drawHistory() { 2941 return mDrawHistory; 2942 } 2943 2944 // Should only be called in UI thread 2945 void switchOutDrawHistory() { 2946 if (null == mWebViewCore) return; // CallbackProxy may trigger this 2947 if (mDrawHistory && mWebViewCore.pictureReady()) { 2948 mDrawHistory = false; 2949 invalidate(); 2950 int oldScrollX = mScrollX; 2951 int oldScrollY = mScrollY; 2952 mScrollX = pinLocX(mScrollX); 2953 mScrollY = pinLocY(mScrollY); 2954 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 2955 mUserScroll = false; 2956 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 2957 oldScrollY); 2958 } 2959 sendOurVisibleRect(); 2960 } 2961 } 2962 2963 WebViewCore.CursorData cursorData() { 2964 WebViewCore.CursorData result = new WebViewCore.CursorData(); 2965 result.mMoveGeneration = nativeMoveGeneration(); 2966 result.mFrame = nativeCursorFramePointer(); 2967 Point position = nativeCursorPosition(); 2968 result.mX = position.x; 2969 result.mY = position.y; 2970 return result; 2971 } 2972 2973 /** 2974 * Delete text from start to end in the focused textfield. If there is no 2975 * focus, or if start == end, silently fail. If start and end are out of 2976 * order, swap them. 2977 * @param start Beginning of selection to delete. 2978 * @param end End of selection to delete. 2979 */ 2980 /* package */ void deleteSelection(int start, int end) { 2981 mTextGeneration++; 2982 WebViewCore.TextSelectionData data 2983 = new WebViewCore.TextSelectionData(start, end); 2984 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 2985 data); 2986 } 2987 2988 /** 2989 * Set the selection to (start, end) in the focused textfield. If start and 2990 * end are out of order, swap them. 2991 * @param start Beginning of selection. 2992 * @param end End of selection. 2993 */ 2994 /* package */ void setSelection(int start, int end) { 2995 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 2996 } 2997 2998 // Called by JNI when a touch event puts a textfield into focus. 2999 private void displaySoftKeyboard(boolean isTextView) { 3000 InputMethodManager imm = (InputMethodManager) 3001 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3002 3003 if (isTextView) { 3004 if (mWebTextView == null) return; 3005 3006 imm.showSoftInput(mWebTextView, 0); 3007 // Now we need to fake a touch event to place the cursor where the 3008 // user touched. 3009 AbsoluteLayout.LayoutParams lp = (AbsoluteLayout.LayoutParams) 3010 mWebTextView.getLayoutParams(); 3011 if (lp != null) { 3012 // Take the last touch and adjust for the location of the 3013 // WebTextView. 3014 float x = mLastTouchX + (float) (mScrollX - lp.x); 3015 float y = mLastTouchY + (float) (mScrollY - lp.y); 3016 mWebTextView.fakeTouchEvent(x, y); 3017 } 3018 if (mInZoomOverview) { 3019 // if in zoom overview mode, call doDoubleTap() to bring it back 3020 // to normal mode so that user can enter text. 3021 doDoubleTap(); 3022 } 3023 } 3024 else { // used by plugins 3025 imm.showSoftInput(this, 0); 3026 } 3027 } 3028 3029 // Called by WebKit to instruct the UI to hide the keyboard 3030 private void hideSoftKeyboard() { 3031 InputMethodManager imm = (InputMethodManager) 3032 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3033 3034 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3035 } 3036 3037 /* 3038 * This method checks the current focus and cursor and potentially rebuilds 3039 * mWebTextView to have the appropriate properties, such as password, 3040 * multiline, and what text it contains. It also removes it if necessary. 3041 */ 3042 /* package */ void rebuildWebTextView() { 3043 // If the WebView does not have focus, do nothing until it gains focus. 3044 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3045 return; 3046 } 3047 boolean alreadyThere = inEditingMode(); 3048 // inEditingMode can only return true if mWebTextView is non-null, 3049 // so we can safely call remove() if (alreadyThere) 3050 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3051 if (alreadyThere) { 3052 mWebTextView.remove(); 3053 } 3054 return; 3055 } 3056 // At this point, we know we have found an input field, so go ahead 3057 // and create the WebTextView if necessary. 3058 if (mWebTextView == null) { 3059 mWebTextView = new WebTextView(mContext, WebView.this); 3060 // Initialize our generation number. 3061 mTextGeneration = 0; 3062 } 3063 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3064 contentToViewDimension(nativeFocusCandidateTextSize())); 3065 Rect visibleRect = new Rect(); 3066 calcOurContentVisibleRect(visibleRect); 3067 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3068 // should be in content coordinates. 3069 Rect bounds = nativeFocusCandidateNodeBounds(); 3070 if (!Rect.intersects(bounds, visibleRect)) { 3071 mWebTextView.bringIntoView(); 3072 } 3073 String text = nativeFocusCandidateText(); 3074 int nodePointer = nativeFocusCandidatePointer(); 3075 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3076 // It is possible that we have the same textfield, but it has moved, 3077 // i.e. In the case of opening/closing the screen. 3078 // In that case, we need to set the dimensions, but not the other 3079 // aspects. 3080 // We also need to restore the selection, which gets wrecked by 3081 // calling setTextEntryRect. 3082 Spannable spannable = (Spannable) mWebTextView.getText(); 3083 int start = Selection.getSelectionStart(spannable); 3084 int end = Selection.getSelectionEnd(spannable); 3085 // If the text has been changed by webkit, update it. However, if 3086 // there has been more UI text input, ignore it. We will receive 3087 // another update when that text is recognized. 3088 if (text != null && !text.equals(spannable.toString()) 3089 && nativeTextGeneration() == mTextGeneration) { 3090 mWebTextView.setTextAndKeepSelection(text); 3091 } else { 3092 Selection.setSelection(spannable, start, end); 3093 } 3094 } else { 3095 Rect vBox = contentToViewRect(bounds); 3096 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3097 vBox.height()); 3098 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3099 Gravity.RIGHT : Gravity.NO_GRAVITY); 3100 // this needs to be called before update adapter thread starts to 3101 // ensure the mWebTextView has the same node pointer 3102 mWebTextView.setNodePointer(nodePointer); 3103 int maxLength = -1; 3104 boolean isTextField = nativeFocusCandidateIsTextField(); 3105 if (isTextField) { 3106 maxLength = nativeFocusCandidateMaxLength(); 3107 String name = nativeFocusCandidateName(); 3108 if (mWebViewCore.getSettings().getSaveFormData() 3109 && name != null) { 3110 Message update = mPrivateHandler.obtainMessage( 3111 REQUEST_FORM_DATA, nodePointer); 3112 RequestFormData updater = new RequestFormData(name, 3113 getUrl(), update); 3114 Thread t = new Thread(updater); 3115 t.start(); 3116 } 3117 } 3118 mWebTextView.setMaxLength(maxLength); 3119 AutoCompleteAdapter adapter = null; 3120 mWebTextView.setAdapterCustom(adapter); 3121 mWebTextView.setSingleLine(isTextField); 3122 mWebTextView.setInPassword(nativeFocusCandidateIsPassword()); 3123 if (null == text) { 3124 mWebTextView.setText("", 0, 0); 3125 if (DebugFlags.WEB_VIEW) { 3126 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3127 } 3128 } else { 3129 // Change to true to enable the old style behavior, where 3130 // entering a textfield/textarea always set the selection to the 3131 // whole field. This was desirable for the case where the user 3132 // intends to scroll past the field using the trackball. 3133 // However, it causes a problem when replying to emails - the 3134 // user expects the cursor to be at the beginning of the 3135 // textarea. Testing out a new behavior, where textfields set 3136 // selection at the end, and textareas at the beginning. 3137 if (false) { 3138 mWebTextView.setText(text, 0, text.length()); 3139 } else if (isTextField) { 3140 int length = text.length(); 3141 mWebTextView.setText(text, length, length); 3142 if (DebugFlags.WEB_VIEW) { 3143 Log.v(LOGTAG, "rebuildWebTextView length=" + length); 3144 } 3145 } else { 3146 mWebTextView.setText(text, 0, 0); 3147 if (DebugFlags.WEB_VIEW) { 3148 Log.v(LOGTAG, "rebuildWebTextView !isTextField"); 3149 } 3150 } 3151 } 3152 mWebTextView.requestFocus(); 3153 } 3154 } 3155 3156 /* 3157 * This class requests an Adapter for the WebTextView which shows past 3158 * entries stored in the database. It is a Runnable so that it can be done 3159 * in its own thread, without slowing down the UI. 3160 */ 3161 private class RequestFormData implements Runnable { 3162 private String mName; 3163 private String mUrl; 3164 private Message mUpdateMessage; 3165 3166 public RequestFormData(String name, String url, Message msg) { 3167 mName = name; 3168 mUrl = url; 3169 mUpdateMessage = msg; 3170 } 3171 3172 public void run() { 3173 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3174 if (pastEntries.size() > 0) { 3175 AutoCompleteAdapter adapter = new 3176 AutoCompleteAdapter(mContext, pastEntries); 3177 mUpdateMessage.obj = adapter; 3178 mUpdateMessage.sendToTarget(); 3179 } 3180 } 3181 } 3182 3183 // This is used to determine long press with the center key. Does not 3184 // affect long press with the trackball/touch. 3185 private boolean mGotCenterDown = false; 3186 3187 @Override 3188 public boolean onKeyDown(int keyCode, KeyEvent event) { 3189 if (DebugFlags.WEB_VIEW) { 3190 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3191 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3192 } 3193 3194 if (mNativeClass == 0) { 3195 return false; 3196 } 3197 3198 // do this hack up front, so it always works, regardless of touch-mode 3199 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3200 mAutoRedraw = !mAutoRedraw; 3201 if (mAutoRedraw) { 3202 invalidate(); 3203 } 3204 return true; 3205 } 3206 3207 // Bubble up the key event if 3208 // 1. it is a system key; or 3209 // 2. the host application wants to handle it; 3210 if (event.isSystem() 3211 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3212 return false; 3213 } 3214 3215 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3216 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3217 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3218 mExtendSelection = false; 3219 mShiftIsPressed = true; 3220 if (nativeHasCursorNode()) { 3221 Rect rect = nativeCursorNodeBounds(); 3222 mSelectX = contentToViewX(rect.left); 3223 mSelectY = contentToViewY(rect.top); 3224 } else { 3225 mSelectX = mScrollX + (int) mLastTouchX; 3226 mSelectY = mScrollY + (int) mLastTouchY; 3227 } 3228 nativeHideCursor(); 3229 } 3230 3231 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3232 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3233 // always handle the navigation keys in the UI thread 3234 switchOutDrawHistory(); 3235 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3236 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3237 return true; 3238 } 3239 // Bubble up the key event as WebView doesn't handle it 3240 return false; 3241 } 3242 3243 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3244 switchOutDrawHistory(); 3245 if (event.getRepeatCount() == 0) { 3246 mGotCenterDown = true; 3247 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3248 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3249 // Already checked mNativeClass, so we do not need to check it 3250 // again. 3251 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 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_SHIFT_LEFT 3259 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3260 // turn off copy select if a shift-key combo is pressed 3261 mExtendSelection = mShiftIsPressed = false; 3262 if (mTouchMode == TOUCH_SELECT_MODE) { 3263 mTouchMode = TOUCH_INIT_MODE; 3264 } 3265 } 3266 3267 if (getSettings().getNavDump()) { 3268 switch (keyCode) { 3269 case KeyEvent.KEYCODE_4: 3270 // "/data/data/com.android.browser/displayTree.txt" 3271 nativeDumpDisplayTree(getUrl()); 3272 break; 3273 case KeyEvent.KEYCODE_5: 3274 case KeyEvent.KEYCODE_6: 3275 // 5: dump the dom tree to the file 3276 // "/data/data/com.android.browser/domTree.txt" 3277 // 6: dump the dom tree to the adb log 3278 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, 3279 (keyCode == KeyEvent.KEYCODE_5) ? 1 : 0, 0); 3280 break; 3281 case KeyEvent.KEYCODE_7: 3282 case KeyEvent.KEYCODE_8: 3283 // 7: dump the render tree to the file 3284 // "/data/data/com.android.browser/renderTree.txt" 3285 // 8: dump the render tree to the adb log 3286 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, 3287 (keyCode == KeyEvent.KEYCODE_7) ? 1 : 0, 0); 3288 break; 3289 case KeyEvent.KEYCODE_9: 3290 nativeInstrumentReport(); 3291 return true; 3292 } 3293 } 3294 3295 if (nativeCursorIsPlugin()) { 3296 nativeUpdatePluginReceivesEvents(); 3297 invalidate(); 3298 } else if (nativeCursorIsTextInput()) { 3299 // This message will put the node in focus, for the DOM's notion 3300 // of focus, and make the focuscontroller active 3301 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3302 nativeCursorNodePointer()); 3303 // This will bring up the WebTextView and put it in focus, for 3304 // our view system's notion of focus 3305 rebuildWebTextView(); 3306 // Now we need to pass the event to it 3307 return mWebTextView.onKeyDown(keyCode, event); 3308 } else if (nativeHasFocusNode()) { 3309 // In this case, the cursor is not on a text input, but the focus 3310 // might be. Check it, and if so, hand over to the WebTextView. 3311 rebuildWebTextView(); 3312 if (inEditingMode()) { 3313 return mWebTextView.onKeyDown(keyCode, event); 3314 } 3315 } 3316 3317 // TODO: should we pass all the keys to DOM or check the meta tag 3318 if (nativeCursorWantsKeyEvents() || true) { 3319 // pass the key to DOM 3320 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3321 // return true as DOM handles the key 3322 return true; 3323 } 3324 3325 // Bubble up the key event as WebView doesn't handle it 3326 return false; 3327 } 3328 3329 @Override 3330 public boolean onKeyUp(int keyCode, KeyEvent event) { 3331 if (DebugFlags.WEB_VIEW) { 3332 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3333 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3334 } 3335 3336 if (mNativeClass == 0) { 3337 return false; 3338 } 3339 3340 // special CALL handling when cursor node's href is "tel:XXX" 3341 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3342 String text = nativeCursorText(); 3343 if (!nativeCursorIsTextInput() && text != null 3344 && text.startsWith(SCHEME_TEL)) { 3345 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3346 getContext().startActivity(intent); 3347 return true; 3348 } 3349 } 3350 3351 // Bubble up the key event if 3352 // 1. it is a system key; or 3353 // 2. the host application wants to handle it; 3354 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3355 return false; 3356 } 3357 3358 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3359 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3360 if (commitCopy()) { 3361 return true; 3362 } 3363 } 3364 3365 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3366 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3367 // always handle the navigation keys in the UI thread 3368 // Bubble up the key event as WebView doesn't handle it 3369 return false; 3370 } 3371 3372 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3373 // remove the long press message first 3374 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3375 mGotCenterDown = false; 3376 3377 if (mShiftIsPressed) { 3378 return false; 3379 } 3380 3381 // perform the single click 3382 Rect visibleRect = sendOurVisibleRect(); 3383 // Note that sendOurVisibleRect calls viewToContent, so the 3384 // coordinates should be in content coordinates. 3385 if (!nativeCursorIntersects(visibleRect)) { 3386 return false; 3387 } 3388 nativeSetFollowedLink(true); 3389 nativeUpdatePluginReceivesEvents(); 3390 WebViewCore.CursorData data = cursorData(); 3391 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3392 playSoundEffect(SoundEffectConstants.CLICK); 3393 boolean isTextInput = nativeCursorIsTextInput(); 3394 if (isTextInput || !mCallbackProxy.uiOverrideUrlLoading( 3395 nativeCursorText())) { 3396 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3397 nativeCursorNodePointer()); 3398 } 3399 if (isTextInput) { 3400 rebuildWebTextView(); 3401 } 3402 return true; 3403 } 3404 3405 // TODO: should we pass all the keys to DOM or check the meta tag 3406 if (nativeCursorWantsKeyEvents() || true) { 3407 // pass the key to DOM 3408 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3409 // return true as DOM handles the key 3410 return true; 3411 } 3412 3413 // Bubble up the key event as WebView doesn't handle it 3414 return false; 3415 } 3416 3417 /** 3418 * @hide 3419 */ 3420 public void emulateShiftHeld() { 3421 mExtendSelection = false; 3422 mShiftIsPressed = true; 3423 nativeHideCursor(); 3424 } 3425 3426 private boolean commitCopy() { 3427 boolean copiedSomething = false; 3428 if (mExtendSelection) { 3429 // copy region so core operates on copy without touching orig. 3430 Region selection = new Region(nativeGetSelection()); 3431 if (selection.isEmpty() == false) { 3432 Toast.makeText(mContext 3433 , com.android.internal.R.string.text_copied 3434 , Toast.LENGTH_SHORT).show(); 3435 mWebViewCore.sendMessage(EventHub.GET_SELECTION, selection); 3436 copiedSomething = true; 3437 } 3438 mExtendSelection = false; 3439 } 3440 mShiftIsPressed = false; 3441 if (mTouchMode == TOUCH_SELECT_MODE) { 3442 mTouchMode = TOUCH_INIT_MODE; 3443 } 3444 return copiedSomething; 3445 } 3446 3447 // Set this as a hierarchy change listener so we can know when this view 3448 // is removed and still have access to our parent. 3449 @Override 3450 protected void onAttachedToWindow() { 3451 super.onAttachedToWindow(); 3452 ViewParent parent = getParent(); 3453 if (parent instanceof ViewGroup) { 3454 ViewGroup p = (ViewGroup) parent; 3455 p.setOnHierarchyChangeListener(this); 3456 } 3457 } 3458 3459 @Override 3460 protected void onDetachedFromWindow() { 3461 super.onDetachedFromWindow(); 3462 ViewParent parent = getParent(); 3463 if (parent instanceof ViewGroup) { 3464 ViewGroup p = (ViewGroup) parent; 3465 p.setOnHierarchyChangeListener(null); 3466 } 3467 3468 // Clean up the zoom controller 3469 mZoomButtonsController.setVisible(false); 3470 } 3471 3472 // Implementation for OnHierarchyChangeListener 3473 public void onChildViewAdded(View parent, View child) {} 3474 3475 public void onChildViewRemoved(View p, View child) { 3476 if (child == this) { 3477 clearTextEntry(); 3478 } 3479 } 3480 3481 /** 3482 * @deprecated WebView should not have implemented 3483 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3484 * does nothing now. 3485 */ 3486 @Deprecated 3487 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3488 } 3489 3490 // To avoid drawing the cursor ring, and remove the TextView when our window 3491 // loses focus. 3492 @Override 3493 public void onWindowFocusChanged(boolean hasWindowFocus) { 3494 if (hasWindowFocus) { 3495 if (hasFocus()) { 3496 // If our window regained focus, and we have focus, then begin 3497 // drawing the cursor ring 3498 mDrawCursorRing = true; 3499 if (mNativeClass != 0) { 3500 nativeRecordButtons(true, false, true); 3501 if (inEditingMode()) { 3502 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3503 } 3504 } 3505 } else { 3506 // If our window gained focus, but we do not have it, do not 3507 // draw the cursor ring. 3508 mDrawCursorRing = false; 3509 // We do not call nativeRecordButtons here because we assume 3510 // that when we lost focus, or window focus, it got called with 3511 // false for the first parameter 3512 } 3513 } else { 3514 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3515 /* 3516 * The zoom controls come in their own window, so our window 3517 * loses focus. Our policy is to not draw the cursor ring if 3518 * our window is not focused, but this is an exception since 3519 * the user can still navigate the web page with the zoom 3520 * controls showing. 3521 */ 3522 // If our window has lost focus, stop drawing the cursor ring 3523 mDrawCursorRing = false; 3524 } 3525 mGotKeyDown = false; 3526 mShiftIsPressed = false; 3527 if (mNativeClass != 0) { 3528 nativeRecordButtons(false, false, true); 3529 } 3530 setFocusControllerInactive(); 3531 } 3532 invalidate(); 3533 super.onWindowFocusChanged(hasWindowFocus); 3534 } 3535 3536 /* 3537 * Pass a message to WebCore Thread, telling the WebCore::Page's 3538 * FocusController to be "inactive" so that it will 3539 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3540 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3541 */ 3542 /* package */ void setFocusControllerInactive() { 3543 // Do not need to also check whether mWebViewCore is null, because 3544 // mNativeClass is only set if mWebViewCore is non null 3545 if (mNativeClass == 0) return; 3546 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3547 } 3548 3549 @Override 3550 protected void onFocusChanged(boolean focused, int direction, 3551 Rect previouslyFocusedRect) { 3552 if (DebugFlags.WEB_VIEW) { 3553 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3554 } 3555 if (focused) { 3556 // When we regain focus, if we have window focus, resume drawing 3557 // the cursor ring 3558 if (hasWindowFocus()) { 3559 mDrawCursorRing = true; 3560 if (mNativeClass != 0) { 3561 nativeRecordButtons(true, false, true); 3562 } 3563 //} else { 3564 // The WebView has gained focus while we do not have 3565 // windowfocus. When our window lost focus, we should have 3566 // called nativeRecordButtons(false...) 3567 } 3568 } else { 3569 // When we lost focus, unless focus went to the TextView (which is 3570 // true if we are in editing mode), stop drawing the cursor ring. 3571 if (!inEditingMode()) { 3572 mDrawCursorRing = false; 3573 if (mNativeClass != 0) { 3574 nativeRecordButtons(false, false, true); 3575 } 3576 setFocusControllerInactive(); 3577 } 3578 mGotKeyDown = false; 3579 } 3580 3581 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3582 } 3583 3584 @Override 3585 protected void onSizeChanged(int w, int h, int ow, int oh) { 3586 super.onSizeChanged(w, h, ow, oh); 3587 // Center zooming to the center of the screen. 3588 if (mZoomScale == 0) { // unless we're already zooming 3589 mZoomCenterX = getViewWidth() * .5f; 3590 mZoomCenterY = getViewHeight() * .5f; 3591 } 3592 3593 // update mMinZoomScale if the minimum zoom scale is not fixed 3594 if (!mMinZoomScaleFixed) { 3595 // when change from narrow screen to wide screen, the new viewWidth 3596 // can be wider than the old content width. We limit the minimum 3597 // scale to 1.0f. The proper minimum scale will be calculated when 3598 // the new picture shows up. 3599 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 3600 / (mDrawHistory ? mHistoryPicture.getWidth() 3601 : mZoomOverviewWidth)); 3602 } 3603 3604 // we always force, in case our height changed, in which case we still 3605 // want to send the notification over to webkit 3606 setNewZoomScale(mActualScale, true); 3607 } 3608 3609 @Override 3610 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3611 super.onScrollChanged(l, t, oldl, oldt); 3612 3613 sendOurVisibleRect(); 3614 } 3615 3616 3617 @Override 3618 public boolean dispatchKeyEvent(KeyEvent event) { 3619 boolean dispatch = true; 3620 3621 if (!inEditingMode()) { 3622 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3623 mGotKeyDown = true; 3624 } else { 3625 if (!mGotKeyDown) { 3626 /* 3627 * We got a key up for which we were not the recipient of 3628 * the original key down. Don't give it to the view. 3629 */ 3630 dispatch = false; 3631 } 3632 mGotKeyDown = false; 3633 } 3634 } 3635 3636 if (dispatch) { 3637 return super.dispatchKeyEvent(event); 3638 } else { 3639 // We didn't dispatch, so let something else handle the key 3640 return false; 3641 } 3642 } 3643 3644 // Here are the snap align logic: 3645 // 1. If it starts nearly horizontally or vertically, snap align; 3646 // 2. If there is a dramitic direction change, let it go; 3647 // 3. If there is a same direction back and forth, lock it. 3648 3649 // adjustable parameters 3650 private int mMinLockSnapReverseDistance; 3651 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 3652 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 3653 3654 @Override 3655 public boolean onTouchEvent(MotionEvent ev) { 3656 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 3657 return false; 3658 } 3659 3660 if (DebugFlags.WEB_VIEW) { 3661 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 3662 + mTouchMode); 3663 } 3664 3665 int action = ev.getAction(); 3666 float x = ev.getX(); 3667 float y = ev.getY(); 3668 long eventTime = ev.getEventTime(); 3669 3670 // Due to the touch screen edge effect, a touch closer to the edge 3671 // always snapped to the edge. As getViewWidth() can be different from 3672 // getWidth() due to the scrollbar, adjusting the point to match 3673 // getViewWidth(). Same applied to the height. 3674 if (x > getViewWidth() - 1) { 3675 x = getViewWidth() - 1; 3676 } 3677 if (y > getViewHeightWithTitle() - 1) { 3678 y = getViewHeightWithTitle() - 1; 3679 } 3680 3681 // pass the touch events from UI thread to WebCore thread 3682 if (mForwardTouchEvents && (action != MotionEvent.ACTION_MOVE 3683 || eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 3684 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 3685 ted.mAction = action; 3686 ted.mX = viewToContentX((int) x + mScrollX); 3687 ted.mY = viewToContentY((int) y + mScrollY); 3688 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 3689 mLastSentTouchTime = eventTime; 3690 } 3691 3692 int deltaX = (int) (mLastTouchX - x); 3693 int deltaY = (int) (mLastTouchY - y); 3694 3695 switch (action) { 3696 case MotionEvent.ACTION_DOWN: { 3697 mPreventDrag = PREVENT_DRAG_NO; 3698 if (!mScroller.isFinished()) { 3699 // stop the current scroll animation, but if this is 3700 // the start of a fling, allow it to add to the current 3701 // fling's velocity 3702 mScroller.abortAnimation(); 3703 mTouchMode = TOUCH_DRAG_START_MODE; 3704 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 3705 } else if (mShiftIsPressed) { 3706 mSelectX = mScrollX + (int) x; 3707 mSelectY = mScrollY + (int) y; 3708 mTouchMode = TOUCH_SELECT_MODE; 3709 if (DebugFlags.WEB_VIEW) { 3710 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 3711 } 3712 nativeMoveSelection(viewToContentX(mSelectX), 3713 viewToContentY(mSelectY), false); 3714 mTouchSelection = mExtendSelection = true; 3715 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 3716 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 3717 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 3718 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 3719 } else { 3720 // commit the short press action for the previous tap 3721 doShortPress(); 3722 // continue, mTouchMode should be still TOUCH_INIT_MODE 3723 } 3724 } else { 3725 mTouchMode = TOUCH_INIT_MODE; 3726 mPreventDrag = mForwardTouchEvents ? PREVENT_DRAG_MAYBE_YES 3727 : PREVENT_DRAG_NO; 3728 mWebViewCore.sendMessage( 3729 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 3730 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 3731 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 3732 (eventTime - mLastTouchUpTime), eventTime); 3733 } 3734 } 3735 // Trigger the link 3736 if (mTouchMode == TOUCH_INIT_MODE 3737 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3738 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3739 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 3740 } 3741 // Remember where the motion event started 3742 mLastTouchX = x; 3743 mLastTouchY = y; 3744 mLastTouchTime = eventTime; 3745 mVelocityTracker = VelocityTracker.obtain(); 3746 mSnapScrollMode = SNAP_NONE; 3747 break; 3748 } 3749 case MotionEvent.ACTION_MOVE: { 3750 if (mTouchMode == TOUCH_DONE_MODE) { 3751 // no dragging during scroll zoom animation 3752 break; 3753 } 3754 mVelocityTracker.addMovement(ev); 3755 3756 if (mTouchMode != TOUCH_DRAG_MODE) { 3757 if (mTouchMode == TOUCH_SELECT_MODE) { 3758 mSelectX = mScrollX + (int) x; 3759 mSelectY = mScrollY + (int) y; 3760 if (DebugFlags.WEB_VIEW) { 3761 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 3762 } 3763 nativeMoveSelection(viewToContentX(mSelectX), 3764 viewToContentY(mSelectY), true); 3765 invalidate(); 3766 break; 3767 } 3768 if ((deltaX * deltaX + deltaY * deltaY) < mTouchSlopSquare) { 3769 break; 3770 } 3771 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 3772 // track mLastTouchTime as we may need to do fling at 3773 // ACTION_UP 3774 mLastTouchTime = eventTime; 3775 break; 3776 } 3777 if (mTouchMode == TOUCH_SHORTPRESS_MODE 3778 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3779 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3780 } else if (mTouchMode == TOUCH_INIT_MODE 3781 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3782 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3783 } 3784 3785 // if it starts nearly horizontal or vertical, enforce it 3786 int ax = Math.abs(deltaX); 3787 int ay = Math.abs(deltaY); 3788 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 3789 mSnapScrollMode = SNAP_X; 3790 mSnapPositive = deltaX > 0; 3791 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 3792 mSnapScrollMode = SNAP_Y; 3793 mSnapPositive = deltaY > 0; 3794 } 3795 3796 mTouchMode = TOUCH_DRAG_MODE; 3797 WebViewCore.pauseUpdate(mWebViewCore); 3798 if (!mDragFromTextInput) { 3799 nativeHideCursor(); 3800 } 3801 WebSettings settings = getSettings(); 3802 if (settings.supportZoom() 3803 && settings.getBuiltInZoomControls() 3804 && !mZoomButtonsController.isVisible() 3805 && mMinZoomScale < mMaxZoomScale) { 3806 mZoomButtonsController.setVisible(true); 3807 int count = settings.getDoubleTapToastCount(); 3808 if (mInZoomOverview && count > 0) { 3809 settings.setDoubleTapToastCount(--count); 3810 Toast.makeText(mContext, 3811 com.android.internal.R.string.double_tap_toast, 3812 Toast.LENGTH_LONG).show(); 3813 } 3814 } 3815 } 3816 3817 // do pan 3818 int newScrollX = pinLocX(mScrollX + deltaX); 3819 deltaX = newScrollX - mScrollX; 3820 int newScrollY = pinLocY(mScrollY + deltaY); 3821 deltaY = newScrollY - mScrollY; 3822 boolean done = false; 3823 if (deltaX == 0 && deltaY == 0) { 3824 done = true; 3825 } else { 3826 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 3827 int ax = Math.abs(deltaX); 3828 int ay = Math.abs(deltaY); 3829 if (mSnapScrollMode == SNAP_X) { 3830 // radical change means getting out of snap mode 3831 if (ay > MAX_SLOPE_FOR_DIAG * ax 3832 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3833 mSnapScrollMode = SNAP_NONE; 3834 } 3835 // reverse direction means lock in the snap mode 3836 if ((ax > MAX_SLOPE_FOR_DIAG * ay) && 3837 ((mSnapPositive && 3838 deltaX < -mMinLockSnapReverseDistance) 3839 || (!mSnapPositive && 3840 deltaX > mMinLockSnapReverseDistance))) { 3841 mSnapScrollMode = SNAP_X_LOCK; 3842 } 3843 } else { 3844 // radical change means getting out of snap mode 3845 if ((ax > MAX_SLOPE_FOR_DIAG * ay) 3846 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3847 mSnapScrollMode = SNAP_NONE; 3848 } 3849 // reverse direction means lock in the snap mode 3850 if ((ay > MAX_SLOPE_FOR_DIAG * ax) && 3851 ((mSnapPositive && 3852 deltaY < -mMinLockSnapReverseDistance) 3853 || (!mSnapPositive && 3854 deltaY > mMinLockSnapReverseDistance))) { 3855 mSnapScrollMode = SNAP_Y_LOCK; 3856 } 3857 } 3858 } 3859 3860 if (mSnapScrollMode == SNAP_X 3861 || mSnapScrollMode == SNAP_X_LOCK) { 3862 scrollBy(deltaX, 0); 3863 mLastTouchX = x; 3864 } else if (mSnapScrollMode == SNAP_Y 3865 || mSnapScrollMode == SNAP_Y_LOCK) { 3866 scrollBy(0, deltaY); 3867 mLastTouchY = y; 3868 } else { 3869 scrollBy(deltaX, deltaY); 3870 mLastTouchX = x; 3871 mLastTouchY = y; 3872 } 3873 mLastTouchTime = eventTime; 3874 mUserScroll = true; 3875 } 3876 3877 if (!getSettings().getBuiltInZoomControls()) { 3878 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 3879 if (mZoomControls != null && showPlusMinus) { 3880 if (mZoomControls.getVisibility() == View.VISIBLE) { 3881 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 3882 } else { 3883 mZoomControls.show(showPlusMinus, false); 3884 } 3885 mPrivateHandler.postDelayed(mZoomControlRunnable, 3886 ZOOM_CONTROLS_TIMEOUT); 3887 } 3888 } 3889 3890 if (done) { 3891 // return false to indicate that we can't pan out of the 3892 // view space 3893 return false; 3894 } 3895 break; 3896 } 3897 case MotionEvent.ACTION_UP: { 3898 mLastTouchUpTime = eventTime; 3899 switch (mTouchMode) { 3900 case TOUCH_DOUBLE_TAP_MODE: // double tap 3901 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3902 mTouchMode = TOUCH_DONE_MODE; 3903 doDoubleTap(); 3904 break; 3905 case TOUCH_SELECT_MODE: 3906 commitCopy(); 3907 mTouchSelection = false; 3908 break; 3909 case TOUCH_INIT_MODE: // tap 3910 case TOUCH_SHORTPRESS_START_MODE: 3911 case TOUCH_SHORTPRESS_MODE: 3912 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3913 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3914 if ((deltaX * deltaX + deltaY * deltaY) > mTouchSlopSquare) { 3915 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 3916 " WebCore's response for touch down."); 3917 if (computeHorizontalScrollExtent() < computeHorizontalScrollRange() 3918 || computeVerticalScrollExtent() < computeVerticalScrollRange()) { 3919 // we will not rewrite drag code here, but we 3920 // will try fling if it applies. 3921 WebViewCore.pauseUpdate(mWebViewCore); 3922 // fall through to TOUCH_DRAG_MODE 3923 } else { 3924 break; 3925 } 3926 } else { 3927 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 3928 // if mPreventDrag is not confirmed, treat it as 3929 // no so that it won't block tap or double tap. 3930 mPreventDrag = PREVENT_DRAG_NO; 3931 } 3932 if (mPreventDrag == PREVENT_DRAG_NO) { 3933 if (mTouchMode == TOUCH_INIT_MODE) { 3934 mPrivateHandler.sendMessageDelayed( 3935 mPrivateHandler.obtainMessage( 3936 RELEASE_SINGLE_TAP), 3937 ViewConfiguration.getDoubleTapTimeout()); 3938 } else { 3939 mTouchMode = TOUCH_DONE_MODE; 3940 doShortPress(); 3941 } 3942 } 3943 break; 3944 } 3945 case TOUCH_DRAG_MODE: 3946 // redraw in high-quality, as we're done dragging 3947 invalidate(); 3948 // if the user waits a while w/o moving before the 3949 // up, we don't want to do a fling 3950 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 3951 mVelocityTracker.addMovement(ev); 3952 doFling(); 3953 break; 3954 } 3955 mLastVelocity = 0; 3956 WebViewCore.resumeUpdate(mWebViewCore); 3957 break; 3958 case TOUCH_DRAG_START_MODE: 3959 case TOUCH_DONE_MODE: 3960 // do nothing 3961 break; 3962 } 3963 // we also use mVelocityTracker == null to tell us that we are 3964 // not "moving around", so we can take the slower/prettier 3965 // mode in the drawing code 3966 if (mVelocityTracker != null) { 3967 mVelocityTracker.recycle(); 3968 mVelocityTracker = null; 3969 } 3970 break; 3971 } 3972 case MotionEvent.ACTION_CANCEL: { 3973 // we also use mVelocityTracker == null to tell us that we are 3974 // not "moving around", so we can take the slower/prettier 3975 // mode in the drawing code 3976 if (mVelocityTracker != null) { 3977 mVelocityTracker.recycle(); 3978 mVelocityTracker = null; 3979 } 3980 if (mTouchMode == TOUCH_DRAG_MODE) { 3981 WebViewCore.resumeUpdate(mWebViewCore); 3982 } 3983 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3984 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3985 mTouchMode = TOUCH_DONE_MODE; 3986 nativeHideCursor(); 3987 break; 3988 } 3989 } 3990 return true; 3991 } 3992 3993 private long mTrackballFirstTime = 0; 3994 private long mTrackballLastTime = 0; 3995 private float mTrackballRemainsX = 0.0f; 3996 private float mTrackballRemainsY = 0.0f; 3997 private int mTrackballXMove = 0; 3998 private int mTrackballYMove = 0; 3999 private boolean mExtendSelection = false; 4000 private boolean mTouchSelection = false; 4001 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4002 private static final int TRACKBALL_TIMEOUT = 200; 4003 private static final int TRACKBALL_WAIT = 100; 4004 private static final int TRACKBALL_SCALE = 400; 4005 private static final int TRACKBALL_SCROLL_COUNT = 5; 4006 private static final int TRACKBALL_MOVE_COUNT = 10; 4007 private static final int TRACKBALL_MULTIPLIER = 3; 4008 private static final int SELECT_CURSOR_OFFSET = 16; 4009 private int mSelectX = 0; 4010 private int mSelectY = 0; 4011 private boolean mShiftIsPressed = false; 4012 private boolean mTrackballDown = false; 4013 private long mTrackballUpTime = 0; 4014 private long mLastCursorTime = 0; 4015 private Rect mLastCursorBounds; 4016 4017 // Set by default; BrowserActivity clears to interpret trackball data 4018 // directly for movement. Currently, the framework only passes 4019 // arrow key events, not trackball events, from one child to the next 4020 private boolean mMapTrackballToArrowKeys = true; 4021 4022 public void setMapTrackballToArrowKeys(boolean setMap) { 4023 mMapTrackballToArrowKeys = setMap; 4024 } 4025 4026 void resetTrackballTime() { 4027 mTrackballLastTime = 0; 4028 } 4029 4030 @Override 4031 public boolean onTrackballEvent(MotionEvent ev) { 4032 long time = ev.getEventTime(); 4033 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4034 if (ev.getY() > 0) pageDown(true); 4035 if (ev.getY() < 0) pageUp(true); 4036 return true; 4037 } 4038 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4039 mTrackballDown = true; 4040 if (mNativeClass == 0) { 4041 return false; 4042 } 4043 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4044 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4045 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4046 nativeSelectBestAt(mLastCursorBounds); 4047 } 4048 if (DebugFlags.WEB_VIEW) { 4049 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4050 + " time=" + time 4051 + " mLastCursorTime=" + mLastCursorTime); 4052 } 4053 if (isInTouchMode()) requestFocusFromTouch(); 4054 return false; // let common code in onKeyDown at it 4055 } 4056 if (ev.getAction() == MotionEvent.ACTION_UP) { 4057 // LONG_PRESS_CENTER is set in common onKeyDown 4058 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4059 mTrackballDown = false; 4060 mTrackballUpTime = time; 4061 if (mShiftIsPressed) { 4062 if (mExtendSelection) { 4063 commitCopy(); 4064 } else { 4065 mExtendSelection = true; 4066 } 4067 } 4068 if (DebugFlags.WEB_VIEW) { 4069 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4070 + " time=" + time 4071 ); 4072 } 4073 return false; // let common code in onKeyUp at it 4074 } 4075 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4076 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4077 return false; 4078 } 4079 if (mTrackballDown) { 4080 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4081 return true; // discard move if trackball is down 4082 } 4083 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4084 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4085 return true; 4086 } 4087 // TODO: alternatively we can do panning as touch does 4088 switchOutDrawHistory(); 4089 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4090 if (DebugFlags.WEB_VIEW) { 4091 Log.v(LOGTAG, "onTrackballEvent time=" 4092 + time + " last=" + mTrackballLastTime); 4093 } 4094 mTrackballFirstTime = time; 4095 mTrackballXMove = mTrackballYMove = 0; 4096 } 4097 mTrackballLastTime = time; 4098 if (DebugFlags.WEB_VIEW) { 4099 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4100 } 4101 mTrackballRemainsX += ev.getX(); 4102 mTrackballRemainsY += ev.getY(); 4103 doTrackball(time); 4104 return true; 4105 } 4106 4107 void moveSelection(float xRate, float yRate) { 4108 if (mNativeClass == 0) 4109 return; 4110 int width = getViewWidth(); 4111 int height = getViewHeight(); 4112 mSelectX += scaleTrackballX(xRate, width); 4113 mSelectY += scaleTrackballY(yRate, height); 4114 int maxX = width + mScrollX; 4115 int maxY = height + mScrollY; 4116 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4117 , mSelectX)); 4118 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4119 , mSelectY)); 4120 if (DebugFlags.WEB_VIEW) { 4121 Log.v(LOGTAG, "moveSelection" 4122 + " mSelectX=" + mSelectX 4123 + " mSelectY=" + mSelectY 4124 + " mScrollX=" + mScrollX 4125 + " mScrollY=" + mScrollY 4126 + " xRate=" + xRate 4127 + " yRate=" + yRate 4128 ); 4129 } 4130 nativeMoveSelection(viewToContentX(mSelectX), 4131 viewToContentY(mSelectY), mExtendSelection); 4132 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4133 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4134 : 0; 4135 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4136 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4137 : 0; 4138 pinScrollBy(scrollX, scrollY, true, 0); 4139 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4140 requestRectangleOnScreen(select); 4141 invalidate(); 4142 } 4143 4144 private int scaleTrackballX(float xRate, int width) { 4145 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4146 int nextXMove = xMove; 4147 if (xMove > 0) { 4148 if (xMove > mTrackballXMove) { 4149 xMove -= mTrackballXMove; 4150 } 4151 } else if (xMove < mTrackballXMove) { 4152 xMove -= mTrackballXMove; 4153 } 4154 mTrackballXMove = nextXMove; 4155 return xMove; 4156 } 4157 4158 private int scaleTrackballY(float yRate, int height) { 4159 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4160 int nextYMove = yMove; 4161 if (yMove > 0) { 4162 if (yMove > mTrackballYMove) { 4163 yMove -= mTrackballYMove; 4164 } 4165 } else if (yMove < mTrackballYMove) { 4166 yMove -= mTrackballYMove; 4167 } 4168 mTrackballYMove = nextYMove; 4169 return yMove; 4170 } 4171 4172 private int keyCodeToSoundsEffect(int keyCode) { 4173 switch(keyCode) { 4174 case KeyEvent.KEYCODE_DPAD_UP: 4175 return SoundEffectConstants.NAVIGATION_UP; 4176 case KeyEvent.KEYCODE_DPAD_RIGHT: 4177 return SoundEffectConstants.NAVIGATION_RIGHT; 4178 case KeyEvent.KEYCODE_DPAD_DOWN: 4179 return SoundEffectConstants.NAVIGATION_DOWN; 4180 case KeyEvent.KEYCODE_DPAD_LEFT: 4181 return SoundEffectConstants.NAVIGATION_LEFT; 4182 } 4183 throw new IllegalArgumentException("keyCode must be one of " + 4184 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4185 "KEYCODE_DPAD_LEFT}."); 4186 } 4187 4188 private void doTrackball(long time) { 4189 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4190 if (elapsed == 0) { 4191 elapsed = TRACKBALL_TIMEOUT; 4192 } 4193 float xRate = mTrackballRemainsX * 1000 / elapsed; 4194 float yRate = mTrackballRemainsY * 1000 / elapsed; 4195 if (mShiftIsPressed) { 4196 moveSelection(xRate, yRate); 4197 mTrackballRemainsX = mTrackballRemainsY = 0; 4198 return; 4199 } 4200 float ax = Math.abs(xRate); 4201 float ay = Math.abs(yRate); 4202 float maxA = Math.max(ax, ay); 4203 if (DebugFlags.WEB_VIEW) { 4204 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4205 + " xRate=" + xRate 4206 + " yRate=" + yRate 4207 + " mTrackballRemainsX=" + mTrackballRemainsX 4208 + " mTrackballRemainsY=" + mTrackballRemainsY); 4209 } 4210 int width = mContentWidth - getViewWidth(); 4211 int height = mContentHeight - getViewHeight(); 4212 if (width < 0) width = 0; 4213 if (height < 0) height = 0; 4214 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4215 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4216 maxA = Math.max(ax, ay); 4217 int count = Math.max(0, (int) maxA); 4218 int oldScrollX = mScrollX; 4219 int oldScrollY = mScrollY; 4220 if (count > 0) { 4221 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4222 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4223 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4224 KeyEvent.KEYCODE_DPAD_RIGHT; 4225 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4226 if (DebugFlags.WEB_VIEW) { 4227 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4228 + " count=" + count 4229 + " mTrackballRemainsX=" + mTrackballRemainsX 4230 + " mTrackballRemainsY=" + mTrackballRemainsY); 4231 } 4232 if (navHandledKey(selectKeyCode, count, false, time, false)) { 4233 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4234 } 4235 mTrackballRemainsX = mTrackballRemainsY = 0; 4236 } 4237 if (count >= TRACKBALL_SCROLL_COUNT) { 4238 int xMove = scaleTrackballX(xRate, width); 4239 int yMove = scaleTrackballY(yRate, height); 4240 if (DebugFlags.WEB_VIEW) { 4241 Log.v(LOGTAG, "doTrackball pinScrollBy" 4242 + " count=" + count 4243 + " xMove=" + xMove + " yMove=" + yMove 4244 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4245 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4246 ); 4247 } 4248 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4249 xMove = 0; 4250 } 4251 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4252 yMove = 0; 4253 } 4254 if (xMove != 0 || yMove != 0) { 4255 pinScrollBy(xMove, yMove, true, 0); 4256 } 4257 mUserScroll = true; 4258 } 4259 } 4260 4261 private int computeMaxScrollY() { 4262 int maxContentH = computeVerticalScrollRange() + getTitleHeight(); 4263 return Math.max(maxContentH - getHeight(), getTitleHeight()); 4264 } 4265 4266 public void flingScroll(int vx, int vy) { 4267 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4268 int maxY = computeMaxScrollY(); 4269 4270 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 4271 invalidate(); 4272 } 4273 4274 private void doFling() { 4275 if (mVelocityTracker == null) { 4276 return; 4277 } 4278 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4279 int maxY = computeMaxScrollY(); 4280 4281 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 4282 int vx = (int) mVelocityTracker.getXVelocity(); 4283 int vy = (int) mVelocityTracker.getYVelocity(); 4284 4285 if (mSnapScrollMode != SNAP_NONE) { 4286 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_X_LOCK) { 4287 vy = 0; 4288 } else { 4289 vx = 0; 4290 } 4291 } 4292 4293 if (true /* EMG release: make our fling more like Maps' */) { 4294 // maps cuts their velocity in half 4295 vx = vx * 3 / 4; 4296 vy = vy * 3 / 4; 4297 } 4298 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 4299 WebViewCore.resumeUpdate(mWebViewCore); 4300 return; 4301 } 4302 float currentVelocity = mScroller.getCurrVelocity(); 4303 if (mLastVelocity > 0 && currentVelocity > 0) { 4304 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 4305 - Math.atan2(vy, vx))); 4306 final float circle = (float) (Math.PI) * 2.0f; 4307 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 4308 vx += currentVelocity * mLastVelX / mLastVelocity; 4309 vy += currentVelocity * mLastVelY / mLastVelocity; 4310 if (DebugFlags.WEB_VIEW) { 4311 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 4312 } 4313 } else if (DebugFlags.WEB_VIEW) { 4314 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 4315 } 4316 } else if (DebugFlags.WEB_VIEW) { 4317 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 4318 + " current=" + currentVelocity 4319 + " vx=" + vx + " vy=" + vy 4320 + " maxX=" + maxX + " maxY=" + maxY 4321 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 4322 } 4323 mLastVelX = vx; 4324 mLastVelY = vy; 4325 mLastVelocity = (float) Math.hypot(vx, vy); 4326 4327 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 4328 // TODO: duration is calculated based on velocity, if the range is 4329 // small, the animation will stop before duration is up. We may 4330 // want to calculate how long the animation is going to run to precisely 4331 // resume the webcore update. 4332 final int time = mScroller.getDuration(); 4333 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_UPDATE, time); 4334 awakenScrollBars(time); 4335 invalidate(); 4336 } 4337 4338 private boolean zoomWithPreview(float scale) { 4339 float oldScale = mActualScale; 4340 mInitialScrollX = mScrollX; 4341 mInitialScrollY = mScrollY; 4342 4343 // snap to DEFAULT_SCALE if it is close 4344 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 4345 scale = mDefaultScale; 4346 } 4347 4348 setNewZoomScale(scale, false); 4349 4350 if (oldScale != mActualScale) { 4351 // use mZoomPickerScale to see zoom preview first 4352 mZoomStart = SystemClock.uptimeMillis(); 4353 mInvInitialZoomScale = 1.0f / oldScale; 4354 mInvFinalZoomScale = 1.0f / mActualScale; 4355 mZoomScale = mActualScale; 4356 if (!mInZoomOverview) { 4357 mLastScale = scale; 4358 } 4359 invalidate(); 4360 return true; 4361 } else { 4362 return false; 4363 } 4364 } 4365 4366 /** 4367 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 4368 * in charge of installing this view to the view hierarchy. This view will 4369 * become visible when the user starts scrolling via touch and fade away if 4370 * the user does not interact with it. 4371 * <p/> 4372 * API version 3 introduces a built-in zoom mechanism that is shown 4373 * automatically by the MapView. This is the preferred approach for 4374 * showing the zoom UI. 4375 * 4376 * @deprecated The built-in zoom mechanism is preferred, see 4377 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 4378 */ 4379 @Deprecated 4380 public View getZoomControls() { 4381 if (!getSettings().supportZoom()) { 4382 Log.w(LOGTAG, "This WebView doesn't support zoom."); 4383 return null; 4384 } 4385 if (mZoomControls == null) { 4386 mZoomControls = createZoomControls(); 4387 4388 /* 4389 * need to be set to VISIBLE first so that getMeasuredHeight() in 4390 * {@link #onSizeChanged()} can return the measured value for proper 4391 * layout. 4392 */ 4393 mZoomControls.setVisibility(View.VISIBLE); 4394 mZoomControlRunnable = new Runnable() { 4395 public void run() { 4396 4397 /* Don't dismiss the controls if the user has 4398 * focus on them. Wait and check again later. 4399 */ 4400 if (!mZoomControls.hasFocus()) { 4401 mZoomControls.hide(); 4402 } else { 4403 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4404 mPrivateHandler.postDelayed(mZoomControlRunnable, 4405 ZOOM_CONTROLS_TIMEOUT); 4406 } 4407 } 4408 }; 4409 } 4410 return mZoomControls; 4411 } 4412 4413 private ExtendedZoomControls createZoomControls() { 4414 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 4415 , null); 4416 zoomControls.setOnZoomInClickListener(new OnClickListener() { 4417 public void onClick(View v) { 4418 // reset time out 4419 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4420 mPrivateHandler.postDelayed(mZoomControlRunnable, 4421 ZOOM_CONTROLS_TIMEOUT); 4422 zoomIn(); 4423 } 4424 }); 4425 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 4426 public void onClick(View v) { 4427 // reset time out 4428 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4429 mPrivateHandler.postDelayed(mZoomControlRunnable, 4430 ZOOM_CONTROLS_TIMEOUT); 4431 zoomOut(); 4432 } 4433 }); 4434 return zoomControls; 4435 } 4436 4437 /** 4438 * Gets the {@link ZoomButtonsController} which can be used to add 4439 * additional buttons to the zoom controls window. 4440 * 4441 * @return The instance of {@link ZoomButtonsController} used by this class, 4442 * or null if it is unavailable. 4443 * @hide 4444 */ 4445 public ZoomButtonsController getZoomButtonsController() { 4446 return mZoomButtonsController; 4447 } 4448 4449 /** 4450 * Perform zoom in in the webview 4451 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 4452 */ 4453 public boolean zoomIn() { 4454 // TODO: alternatively we can disallow this during draw history mode 4455 switchOutDrawHistory(); 4456 // Center zooming to the center of the screen. 4457 if (mInZoomOverview) { 4458 // if in overview mode, bring it back to normal mode 4459 mLastTouchX = getViewWidth() * .5f; 4460 mLastTouchY = getViewHeight() * .5f; 4461 doDoubleTap(); 4462 return true; 4463 } else { 4464 mZoomCenterX = getViewWidth() * .5f; 4465 mZoomCenterY = getViewHeight() * .5f; 4466 return zoomWithPreview(mActualScale * 1.25f); 4467 } 4468 } 4469 4470 /** 4471 * Perform zoom out in the webview 4472 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 4473 */ 4474 public boolean zoomOut() { 4475 // TODO: alternatively we can disallow this during draw history mode 4476 switchOutDrawHistory(); 4477 float scale = mActualScale * 0.8f; 4478 if (scale < (mMinZoomScale + 0.1f) 4479 && mWebViewCore.getSettings().getUseWideViewPort()) { 4480 // when zoom out to min scale, switch to overview mode 4481 doDoubleTap(); 4482 return true; 4483 } else { 4484 // Center zooming to the center of the screen. 4485 mZoomCenterX = getViewWidth() * .5f; 4486 mZoomCenterY = getViewHeight() * .5f; 4487 return zoomWithPreview(scale); 4488 } 4489 } 4490 4491 private void updateSelection() { 4492 if (mNativeClass == 0) { 4493 return; 4494 } 4495 // mLastTouchX and mLastTouchY are the point in the current viewport 4496 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4497 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4498 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 4499 contentX + mNavSlop, contentY + mNavSlop); 4500 nativeSelectBestAt(rect); 4501 } 4502 4503 /** 4504 * Scroll the focused text field/area to match the WebTextView 4505 * @param x New x position of the WebTextView in view coordinates 4506 * @param y New y position of the WebTextView in view coordinates 4507 */ 4508 /*package*/ void scrollFocusedTextInput(int x, int y) { 4509 if (!inEditingMode() || mWebViewCore == null) { 4510 return; 4511 } 4512 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, viewToContentX(x), 4513 // Since this position is relative to the top of the text input 4514 // field, we do not need to take the title bar's height into 4515 // consideration. 4516 viewToContentDimension(y)); 4517 } 4518 4519 /** 4520 * Set our starting point and time for a drag from the WebTextView. 4521 */ 4522 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 4523 if (!inEditingMode()) { 4524 return; 4525 } 4526 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 4527 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 4528 mLastTouchTime = eventTime; 4529 if (!mScroller.isFinished()) { 4530 abortAnimation(); 4531 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 4532 } 4533 mSnapScrollMode = SNAP_NONE; 4534 mVelocityTracker = VelocityTracker.obtain(); 4535 mTouchMode = TOUCH_DRAG_START_MODE; 4536 } 4537 4538 /** 4539 * Given a motion event from the WebTextView, set its location to our 4540 * coordinates, and handle the event. 4541 */ 4542 /*package*/ boolean textFieldDrag(MotionEvent event) { 4543 if (!inEditingMode()) { 4544 return false; 4545 } 4546 mDragFromTextInput = true; 4547 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 4548 (float) (mWebTextView.getTop() - mScrollY)); 4549 boolean result = onTouchEvent(event); 4550 mDragFromTextInput = false; 4551 return result; 4552 } 4553 4554 /** 4555 * Do a touch up from a WebTextView. This will be handled by webkit to 4556 * change the selection. 4557 * @param event MotionEvent in the WebTextView's coordinates. 4558 */ 4559 /*package*/ void touchUpOnTextField(MotionEvent event) { 4560 if (!inEditingMode()) { 4561 return; 4562 } 4563 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 4564 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 4565 // In case the soft keyboard has been dismissed, bring it back up. 4566 InputMethodManager.getInstance(getContext()).showSoftInput(mWebTextView, 4567 0); 4568 if (nativeFocusNodePointer() != nativeCursorNodePointer()) { 4569 nativeMotionUp(x, y, mNavSlop); 4570 } 4571 nativeTextInputMotionUp(x, y); 4572 } 4573 4574 /*package*/ void shortPressOnTextField() { 4575 if (inEditingMode()) { 4576 View v = mWebTextView; 4577 int x = viewToContentX((v.getLeft() + v.getRight()) >> 1); 4578 int y = viewToContentY((v.getTop() + v.getBottom()) >> 1); 4579 nativeTextInputMotionUp(x, y); 4580 } 4581 } 4582 4583 private void doShortPress() { 4584 if (mNativeClass == 0) { 4585 return; 4586 } 4587 switchOutDrawHistory(); 4588 // mLastTouchX and mLastTouchY are the point in the current viewport 4589 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4590 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4591 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 4592 if (mLogEvent) { 4593 Checkin.updateStats(mContext.getContentResolver(), 4594 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 4595 } 4596 } 4597 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 4598 playSoundEffect(SoundEffectConstants.CLICK); 4599 } 4600 } 4601 4602 private void doDoubleTap() { 4603 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 4604 return; 4605 } 4606 mZoomCenterX = mLastTouchX; 4607 mZoomCenterY = mLastTouchY; 4608 mInZoomOverview = !mInZoomOverview; 4609 // remove the zoom control after double tap 4610 WebSettings settings = getSettings(); 4611 if (settings.getBuiltInZoomControls()) { 4612 if (mZoomButtonsController.isVisible()) { 4613 mZoomButtonsController.setVisible(false); 4614 } 4615 } else { 4616 if (mZoomControlRunnable != null) { 4617 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4618 } 4619 if (mZoomControls != null) { 4620 mZoomControls.hide(); 4621 } 4622 } 4623 settings.setDoubleTapToastCount(0); 4624 if (mInZoomOverview) { 4625 // Force the titlebar fully reveal in overview mode 4626 if (mScrollY < getTitleHeight()) mScrollY = 0; 4627 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth); 4628 } else { 4629 // mLastTouchX and mLastTouchY are the point in the current viewport 4630 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4631 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4632 int left = nativeGetBlockLeftEdge(contentX, contentY, mActualScale); 4633 if (left != NO_LEFTEDGE) { 4634 // add a 5pt padding to the left edge. Re-calculate the zoom 4635 // center so that the new scroll x will be on the left edge. 4636 mZoomCenterX = left < 5 ? 0 : (left - 5) * mLastScale 4637 * mActualScale / (mLastScale - mActualScale); 4638 } 4639 zoomWithPreview(mLastScale); 4640 } 4641 } 4642 4643 // Called by JNI to handle a touch on a node representing an email address, 4644 // address, or phone number 4645 private void overrideLoading(String url) { 4646 mCallbackProxy.uiOverrideUrlLoading(url); 4647 } 4648 4649 // called by JNI 4650 private void sendPluginState(int state) { 4651 WebViewCore.PluginStateData psd = new WebViewCore.PluginStateData(); 4652 psd.mFrame = nativeCursorFramePointer(); 4653 psd.mNode = nativeCursorNodePointer(); 4654 psd.mState = state; 4655 mWebViewCore.sendMessage(EventHub.PLUGIN_STATE, psd); 4656 } 4657 4658 @Override 4659 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 4660 boolean result = false; 4661 if (inEditingMode()) { 4662 result = mWebTextView.requestFocus(direction, 4663 previouslyFocusedRect); 4664 } else { 4665 result = super.requestFocus(direction, previouslyFocusedRect); 4666 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 4667 // For cases such as GMail, where we gain focus from a direction, 4668 // we want to move to the first available link. 4669 // FIXME: If there are no visible links, we may not want to 4670 int fakeKeyDirection = 0; 4671 switch(direction) { 4672 case View.FOCUS_UP: 4673 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 4674 break; 4675 case View.FOCUS_DOWN: 4676 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 4677 break; 4678 case View.FOCUS_LEFT: 4679 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 4680 break; 4681 case View.FOCUS_RIGHT: 4682 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 4683 break; 4684 default: 4685 return result; 4686 } 4687 if (mNativeClass != 0 && !nativeHasCursorNode()) { 4688 navHandledKey(fakeKeyDirection, 1, true, 0, true); 4689 } 4690 } 4691 } 4692 return result; 4693 } 4694 4695 @Override 4696 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4697 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 4698 4699 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 4700 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 4701 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 4702 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 4703 4704 int measuredHeight = heightSize; 4705 int measuredWidth = widthSize; 4706 4707 // Grab the content size from WebViewCore. 4708 int contentHeight = contentToViewDimension(mContentHeight); 4709 int contentWidth = contentToViewDimension(mContentWidth); 4710 4711// Log.d(LOGTAG, "------- measure " + heightMode); 4712 4713 if (heightMode != MeasureSpec.EXACTLY) { 4714 mHeightCanMeasure = true; 4715 measuredHeight = contentHeight; 4716 if (heightMode == MeasureSpec.AT_MOST) { 4717 // If we are larger than the AT_MOST height, then our height can 4718 // no longer be measured and we should scroll internally. 4719 if (measuredHeight > heightSize) { 4720 measuredHeight = heightSize; 4721 mHeightCanMeasure = false; 4722 } 4723 } 4724 } else { 4725 mHeightCanMeasure = false; 4726 } 4727 if (mNativeClass != 0) { 4728 nativeSetHeightCanMeasure(mHeightCanMeasure); 4729 } 4730 // For the width, always use the given size unless unspecified. 4731 if (widthMode == MeasureSpec.UNSPECIFIED) { 4732 mWidthCanMeasure = true; 4733 measuredWidth = contentWidth; 4734 } else { 4735 mWidthCanMeasure = false; 4736 } 4737 4738 synchronized (this) { 4739 setMeasuredDimension(measuredWidth, measuredHeight); 4740 } 4741 } 4742 4743 @Override 4744 public boolean requestChildRectangleOnScreen(View child, 4745 Rect rect, 4746 boolean immediate) { 4747 rect.offset(child.getLeft() - child.getScrollX(), 4748 child.getTop() - child.getScrollY()); 4749 4750 int height = getViewHeightWithTitle(); 4751 int screenTop = mScrollY; 4752 int screenBottom = screenTop + height; 4753 4754 int scrollYDelta = 0; 4755 4756 if (rect.bottom > screenBottom) { 4757 int oneThirdOfScreenHeight = height / 3; 4758 if (rect.height() > 2 * oneThirdOfScreenHeight) { 4759 // If the rectangle is too tall to fit in the bottom two thirds 4760 // of the screen, place it at the top. 4761 scrollYDelta = rect.top - screenTop; 4762 } else { 4763 // If the rectangle will still fit on screen, we want its 4764 // top to be in the top third of the screen. 4765 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 4766 } 4767 } else if (rect.top < screenTop) { 4768 scrollYDelta = rect.top - screenTop; 4769 } 4770 4771 int width = getWidth() - getVerticalScrollbarWidth(); 4772 int screenLeft = mScrollX; 4773 int screenRight = screenLeft + width; 4774 4775 int scrollXDelta = 0; 4776 4777 if (rect.right > screenRight && rect.left > screenLeft) { 4778 if (rect.width() > width) { 4779 scrollXDelta += (rect.left - screenLeft); 4780 } else { 4781 scrollXDelta += (rect.right - screenRight); 4782 } 4783 } else if (rect.left < screenLeft) { 4784 scrollXDelta -= (screenLeft - rect.left); 4785 } 4786 4787 if ((scrollYDelta | scrollXDelta) != 0) { 4788 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 4789 } 4790 4791 return false; 4792 } 4793 4794 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 4795 String replace, int newStart, int newEnd) { 4796 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 4797 arg.mReplace = replace; 4798 arg.mNewStart = newStart; 4799 arg.mNewEnd = newEnd; 4800 mTextGeneration++; 4801 arg.mTextGeneration = mTextGeneration; 4802 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 4803 } 4804 4805 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 4806 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 4807 mWebViewCore.sendMessage(EventHub.CLICK); 4808 int select = nativeFocusCandidateIsTextField() ? 4809 nativeFocusCandidateMaxLength() : 0; 4810 setSelection(select, select); 4811 } 4812 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 4813 arg.mEvent = event; 4814 arg.mCurrentText = currentText; 4815 // Increase our text generation number, and pass it to webcore thread 4816 mTextGeneration++; 4817 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 4818 // WebKit's document state is not saved until about to leave the page. 4819 // To make sure the host application, like Browser, has the up to date 4820 // document state when it goes to background, we force to save the 4821 // document state. 4822 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 4823 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 4824 cursorData(), 1000); 4825 } 4826 4827 /* package */ WebViewCore getWebViewCore() { 4828 return mWebViewCore; 4829 } 4830 4831 //------------------------------------------------------------------------- 4832 // Methods can be called from a separate thread, like WebViewCore 4833 // If it needs to call the View system, it has to send message. 4834 //------------------------------------------------------------------------- 4835 4836 /** 4837 * General handler to receive message coming from webkit thread 4838 */ 4839 class PrivateHandler extends Handler { 4840 @Override 4841 public void handleMessage(Message msg) { 4842 if (DebugFlags.WEB_VIEW) { 4843 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 4844 > INVAL_RECT_MSG_ID ? Integer.toString(msg.what) 4845 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 4846 } 4847 if (mWebViewCore == null) { 4848 // after WebView's destroy() is called, skip handling messages. 4849 return; 4850 } 4851 switch (msg.what) { 4852 case REMEMBER_PASSWORD: { 4853 mDatabase.setUsernamePassword( 4854 msg.getData().getString("host"), 4855 msg.getData().getString("username"), 4856 msg.getData().getString("password")); 4857 ((Message) msg.obj).sendToTarget(); 4858 break; 4859 } 4860 case NEVER_REMEMBER_PASSWORD: { 4861 mDatabase.setUsernamePassword( 4862 msg.getData().getString("host"), null, null); 4863 ((Message) msg.obj).sendToTarget(); 4864 break; 4865 } 4866 case SWITCH_TO_SHORTPRESS: { 4867 // if mPreventDrag is not confirmed, treat it as no so that 4868 // it won't block panning the page. 4869 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4870 mPreventDrag = PREVENT_DRAG_NO; 4871 } 4872 if (mTouchMode == TOUCH_INIT_MODE) { 4873 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 4874 updateSelection(); 4875 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4876 mTouchMode = TOUCH_DONE_MODE; 4877 } 4878 break; 4879 } 4880 case SWITCH_TO_LONGPRESS: { 4881 if (mPreventDrag == PREVENT_DRAG_NO) { 4882 mTouchMode = TOUCH_DONE_MODE; 4883 performLongClick(); 4884 rebuildWebTextView(); 4885 } 4886 break; 4887 } 4888 case RELEASE_SINGLE_TAP: { 4889 if (mPreventDrag == PREVENT_DRAG_NO) { 4890 mTouchMode = TOUCH_DONE_MODE; 4891 doShortPress(); 4892 } 4893 break; 4894 } 4895 case SCROLL_BY_MSG_ID: 4896 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 4897 break; 4898 case SYNC_SCROLL_TO_MSG_ID: 4899 if (mUserScroll) { 4900 // if user has scrolled explicitly, don't sync the 4901 // scroll position any more 4902 mUserScroll = false; 4903 break; 4904 } 4905 // fall through 4906 case SCROLL_TO_MSG_ID: 4907 if (setContentScrollTo(msg.arg1, msg.arg2)) { 4908 // if we can't scroll to the exact position due to pin, 4909 // send a message to WebCore to re-scroll when we get a 4910 // new picture 4911 mUserScroll = false; 4912 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 4913 msg.arg1, msg.arg2); 4914 } 4915 break; 4916 case SPAWN_SCROLL_TO_MSG_ID: 4917 spawnContentScrollTo(msg.arg1, msg.arg2); 4918 break; 4919 case NEW_PICTURE_MSG_ID: { 4920 WebSettings settings = mWebViewCore.getSettings(); 4921 // called for new content 4922 final int viewWidth = getViewWidth(); 4923 final WebViewCore.DrawData draw = 4924 (WebViewCore.DrawData) msg.obj; 4925 final Point viewSize = draw.mViewPoint; 4926 boolean useWideViewport = settings.getUseWideViewPort(); 4927 WebViewCore.RestoreState restoreState = draw.mRestoreState; 4928 if (restoreState != null) { 4929 mInZoomOverview = false; 4930 mLastScale = restoreState.mTextWrapScale; 4931 if (restoreState.mMinScale == 0) { 4932 if (restoreState.mMobileSite) { 4933 if (draw.mMinPrefWidth > 4934 Math.max(0, draw.mViewPoint.x)) { 4935 mMinZoomScale = (float) viewWidth 4936 / draw.mMinPrefWidth; 4937 mMinZoomScaleFixed = false; 4938 } else { 4939 mMinZoomScale = restoreState.mDefaultScale; 4940 mMinZoomScaleFixed = true; 4941 } 4942 } else { 4943 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 4944 mMinZoomScaleFixed = false; 4945 } 4946 } else { 4947 mMinZoomScale = restoreState.mMinScale; 4948 mMinZoomScaleFixed = true; 4949 } 4950 if (restoreState.mMaxScale == 0) { 4951 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 4952 } else { 4953 mMaxZoomScale = restoreState.mMaxScale; 4954 } 4955 setNewZoomScale(mLastScale, false); 4956 setContentScrollTo(restoreState.mScrollX, 4957 restoreState.mScrollY); 4958 if (useWideViewport 4959 && settings.getLoadWithOverviewMode()) { 4960 if (restoreState.mViewScale == 0 4961 || (restoreState.mMobileSite 4962 && mMinZoomScale < restoreState.mDefaultScale)) { 4963 mInZoomOverview = true; 4964 } 4965 } 4966 // As we are on a new page, remove the WebTextView. This 4967 // is necessary for page loads driven by webkit, and in 4968 // particular when the user was on a password field, so 4969 // the WebTextView was visible. 4970 clearTextEntry(); 4971 } 4972 // We update the layout (i.e. request a layout from the 4973 // view system) if the last view size that we sent to 4974 // WebCore matches the view size of the picture we just 4975 // received in the fixed dimension. 4976 final boolean updateLayout = viewSize.x == mLastWidthSent 4977 && viewSize.y == mLastHeightSent; 4978 recordNewContentSize(draw.mWidthHeight.x, 4979 draw.mWidthHeight.y 4980 + (mFindIsUp ? mFindHeight : 0), updateLayout); 4981 if (DebugFlags.WEB_VIEW) { 4982 Rect b = draw.mInvalRegion.getBounds(); 4983 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 4984 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 4985 } 4986 invalidateContentRect(draw.mInvalRegion.getBounds()); 4987 if (mPictureListener != null) { 4988 mPictureListener.onNewPicture(WebView.this, capturePicture()); 4989 } 4990 if (useWideViewport) { 4991 mZoomOverviewWidth = Math.max(draw.mMinPrefWidth, 4992 draw.mViewPoint.x); 4993 } 4994 if (!mMinZoomScaleFixed) { 4995 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 4996 } 4997 if (!mDrawHistory && mInZoomOverview) { 4998 // fit the content width to the current view. Ignore 4999 // the rounding error case. 5000 if (Math.abs((viewWidth * mInvActualScale) 5001 - mZoomOverviewWidth) > 1) { 5002 setNewZoomScale((float) viewWidth 5003 / mZoomOverviewWidth, false); 5004 } 5005 } 5006 break; 5007 } 5008 case WEBCORE_INITIALIZED_MSG_ID: 5009 // nativeCreate sets mNativeClass to a non-zero value 5010 nativeCreate(msg.arg1); 5011 break; 5012 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5013 // Make sure that the textfield is currently focused 5014 // and representing the same node as the pointer. 5015 if (inEditingMode() && 5016 mWebTextView.isSameTextField(msg.arg1)) { 5017 if (msg.getData().getBoolean("password")) { 5018 Spannable text = (Spannable) mWebTextView.getText(); 5019 int start = Selection.getSelectionStart(text); 5020 int end = Selection.getSelectionEnd(text); 5021 mWebTextView.setInPassword(true); 5022 // Restore the selection, which may have been 5023 // ruined by setInPassword. 5024 Spannable pword = 5025 (Spannable) mWebTextView.getText(); 5026 Selection.setSelection(pword, start, end); 5027 // If the text entry has created more events, ignore 5028 // this one. 5029 } else if (msg.arg2 == mTextGeneration) { 5030 mWebTextView.setTextAndKeepSelection( 5031 (String) msg.obj); 5032 } 5033 } 5034 break; 5035 case UPDATE_TEXT_SELECTION_MSG_ID: 5036 if (inEditingMode() 5037 && mWebTextView.isSameTextField(msg.arg1) 5038 && msg.arg2 == mTextGeneration) { 5039 WebViewCore.TextSelectionData tData 5040 = (WebViewCore.TextSelectionData) msg.obj; 5041 mWebTextView.setSelectionFromWebKit(tData.mStart, 5042 tData.mEnd); 5043 } 5044 break; 5045 case MOVE_OUT_OF_PLUGIN: 5046 if (nativePluginEatsNavKey()) { 5047 navHandledKey(msg.arg1, 1, false, 0, true); 5048 } 5049 break; 5050 case UPDATE_TEXT_ENTRY_MSG_ID: 5051 // this is sent after finishing resize in WebViewCore. Make 5052 // sure the text edit box is still on the screen. 5053 if (inEditingMode() && nativeCursorIsTextInput()) { 5054 mWebTextView.bringIntoView(); 5055 rebuildWebTextView(); 5056 } 5057 break; 5058 case CLEAR_TEXT_ENTRY: 5059 clearTextEntry(); 5060 break; 5061 case INVAL_RECT_MSG_ID: { 5062 Rect r = (Rect)msg.obj; 5063 if (r == null) { 5064 invalidate(); 5065 } else { 5066 // we need to scale r from content into view coords, 5067 // which viewInvalidate() does for us 5068 viewInvalidate(r.left, r.top, r.right, r.bottom); 5069 } 5070 break; 5071 } 5072 case REQUEST_FORM_DATA: 5073 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5074 if (mWebTextView.isSameTextField(msg.arg1)) { 5075 mWebTextView.setAdapterCustom(adapter); 5076 } 5077 break; 5078 case UPDATE_CLIPBOARD: 5079 String str = (String) msg.obj; 5080 if (DebugFlags.WEB_VIEW) { 5081 Log.v(LOGTAG, "UPDATE_CLIPBOARD " + str); 5082 } 5083 try { 5084 IClipboard clip = IClipboard.Stub.asInterface( 5085 ServiceManager.getService("clipboard")); 5086 clip.setClipboardText(str); 5087 } catch (android.os.RemoteException e) { 5088 Log.e(LOGTAG, "Clipboard failed", e); 5089 } 5090 break; 5091 case RESUME_WEBCORE_UPDATE: 5092 WebViewCore.resumeUpdate(mWebViewCore); 5093 break; 5094 5095 case LONG_PRESS_CENTER: 5096 // as this is shared by keydown and trackballdown, reset all 5097 // the states 5098 mGotCenterDown = false; 5099 mTrackballDown = false; 5100 // LONG_PRESS_CENTER is sent as a delayed message. If we 5101 // switch to windows overview, the WebView will be 5102 // temporarily removed from the view system. In that case, 5103 // do nothing. 5104 if (getParent() != null) { 5105 performLongClick(); 5106 } 5107 break; 5108 5109 case WEBCORE_NEED_TOUCH_EVENTS: 5110 mForwardTouchEvents = (msg.arg1 != 0); 5111 break; 5112 5113 case PREVENT_TOUCH_ID: 5114 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5115 // dont override if mPreventDrag has been set to no due 5116 // to time out 5117 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5118 mPreventDrag = msg.arg2 == 1 ? PREVENT_DRAG_YES 5119 : PREVENT_DRAG_NO; 5120 if (mPreventDrag == PREVENT_DRAG_YES) { 5121 mTouchMode = TOUCH_DONE_MODE; 5122 } 5123 } 5124 } 5125 break; 5126 5127 case REQUEST_KEYBOARD: 5128 if (msg.arg1 == 0) { 5129 hideSoftKeyboard(); 5130 } else { 5131 displaySoftKeyboard(false); 5132 } 5133 break; 5134 5135 default: 5136 super.handleMessage(msg); 5137 break; 5138 } 5139 } 5140 } 5141 5142 // Class used to use a dropdown for a <select> element 5143 private class InvokeListBox implements Runnable { 5144 // Whether the listbox allows multiple selection. 5145 private boolean mMultiple; 5146 // Passed in to a list with multiple selection to tell 5147 // which items are selected. 5148 private int[] mSelectedArray; 5149 // Passed in to a list with single selection to tell 5150 // where the initial selection is. 5151 private int mSelection; 5152 5153 private Container[] mContainers; 5154 5155 // Need these to provide stable ids to my ArrayAdapter, 5156 // which normally does not have stable ids. (Bug 1250098) 5157 private class Container extends Object { 5158 String mString; 5159 boolean mEnabled; 5160 int mId; 5161 5162 public String toString() { 5163 return mString; 5164 } 5165 } 5166 5167 /** 5168 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 5169 * and allow filtering. 5170 */ 5171 private class MyArrayListAdapter extends ArrayAdapter<Container> { 5172 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 5173 super(context, 5174 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 5175 com.android.internal.R.layout.select_dialog_singlechoice, 5176 objects); 5177 } 5178 5179 @Override 5180 public boolean hasStableIds() { 5181 // AdapterView's onChanged method uses this to determine whether 5182 // to restore the old state. Return false so that the old (out 5183 // of date) state does not replace the new, valid state. 5184 return false; 5185 } 5186 5187 private Container item(int position) { 5188 if (position < 0 || position >= getCount()) { 5189 return null; 5190 } 5191 return (Container) getItem(position); 5192 } 5193 5194 @Override 5195 public long getItemId(int position) { 5196 Container item = item(position); 5197 if (item == null) { 5198 return -1; 5199 } 5200 return item.mId; 5201 } 5202 5203 @Override 5204 public boolean areAllItemsEnabled() { 5205 return false; 5206 } 5207 5208 @Override 5209 public boolean isEnabled(int position) { 5210 Container item = item(position); 5211 if (item == null) { 5212 return false; 5213 } 5214 return item.mEnabled; 5215 } 5216 } 5217 5218 private InvokeListBox(String[] array, 5219 boolean[] enabled, int[] selected) { 5220 mMultiple = true; 5221 mSelectedArray = selected; 5222 5223 int length = array.length; 5224 mContainers = new Container[length]; 5225 for (int i = 0; i < length; i++) { 5226 mContainers[i] = new Container(); 5227 mContainers[i].mString = array[i]; 5228 mContainers[i].mEnabled = enabled[i]; 5229 mContainers[i].mId = i; 5230 } 5231 } 5232 5233 private InvokeListBox(String[] array, boolean[] enabled, int 5234 selection) { 5235 mSelection = selection; 5236 mMultiple = false; 5237 5238 int length = array.length; 5239 mContainers = new Container[length]; 5240 for (int i = 0; i < length; i++) { 5241 mContainers[i] = new Container(); 5242 mContainers[i].mString = array[i]; 5243 mContainers[i].mEnabled = enabled[i]; 5244 mContainers[i].mId = i; 5245 } 5246 } 5247 5248 /* 5249 * Whenever the data set changes due to filtering, this class ensures 5250 * that the checked item remains checked. 5251 */ 5252 private class SingleDataSetObserver extends DataSetObserver { 5253 private long mCheckedId; 5254 private ListView mListView; 5255 private Adapter mAdapter; 5256 5257 /* 5258 * Create a new observer. 5259 * @param id The ID of the item to keep checked. 5260 * @param l ListView for getting and clearing the checked states 5261 * @param a Adapter for getting the IDs 5262 */ 5263 public SingleDataSetObserver(long id, ListView l, Adapter a) { 5264 mCheckedId = id; 5265 mListView = l; 5266 mAdapter = a; 5267 } 5268 5269 public void onChanged() { 5270 // The filter may have changed which item is checked. Find the 5271 // item that the ListView thinks is checked. 5272 int position = mListView.getCheckedItemPosition(); 5273 long id = mAdapter.getItemId(position); 5274 if (mCheckedId != id) { 5275 // Clear the ListView's idea of the checked item, since 5276 // it is incorrect 5277 mListView.clearChoices(); 5278 // Search for mCheckedId. If it is in the filtered list, 5279 // mark it as checked 5280 int count = mAdapter.getCount(); 5281 for (int i = 0; i < count; i++) { 5282 if (mAdapter.getItemId(i) == mCheckedId) { 5283 mListView.setItemChecked(i, true); 5284 break; 5285 } 5286 } 5287 } 5288 } 5289 5290 public void onInvalidate() {} 5291 } 5292 5293 public void run() { 5294 final ListView listView = (ListView) LayoutInflater.from(mContext) 5295 .inflate(com.android.internal.R.layout.select_dialog, null); 5296 final MyArrayListAdapter adapter = new 5297 MyArrayListAdapter(mContext, mContainers, mMultiple); 5298 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 5299 .setView(listView).setCancelable(true) 5300 .setInverseBackgroundForced(true); 5301 5302 if (mMultiple) { 5303 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 5304 public void onClick(DialogInterface dialog, int which) { 5305 mWebViewCore.sendMessage( 5306 EventHub.LISTBOX_CHOICES, 5307 adapter.getCount(), 0, 5308 listView.getCheckedItemPositions()); 5309 }}); 5310 b.setNegativeButton(android.R.string.cancel, 5311 new DialogInterface.OnClickListener() { 5312 public void onClick(DialogInterface dialog, int which) { 5313 mWebViewCore.sendMessage( 5314 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5315 }}); 5316 } 5317 final AlertDialog dialog = b.create(); 5318 listView.setAdapter(adapter); 5319 listView.setFocusableInTouchMode(true); 5320 // There is a bug (1250103) where the checks in a ListView with 5321 // multiple items selected are associated with the positions, not 5322 // the ids, so the items do not properly retain their checks when 5323 // filtered. Do not allow filtering on multiple lists until 5324 // that bug is fixed. 5325 5326 listView.setTextFilterEnabled(!mMultiple); 5327 if (mMultiple) { 5328 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 5329 int length = mSelectedArray.length; 5330 for (int i = 0; i < length; i++) { 5331 listView.setItemChecked(mSelectedArray[i], true); 5332 } 5333 } else { 5334 listView.setOnItemClickListener(new OnItemClickListener() { 5335 public void onItemClick(AdapterView parent, View v, 5336 int position, long id) { 5337 mWebViewCore.sendMessage( 5338 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 5339 dialog.dismiss(); 5340 } 5341 }); 5342 if (mSelection != -1) { 5343 listView.setSelection(mSelection); 5344 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 5345 listView.setItemChecked(mSelection, true); 5346 DataSetObserver observer = new SingleDataSetObserver( 5347 adapter.getItemId(mSelection), listView, adapter); 5348 adapter.registerDataSetObserver(observer); 5349 } 5350 } 5351 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 5352 public void onCancel(DialogInterface dialog) { 5353 mWebViewCore.sendMessage( 5354 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5355 } 5356 }); 5357 dialog.show(); 5358 } 5359 } 5360 5361 /* 5362 * Request a dropdown menu for a listbox with multiple selection. 5363 * 5364 * @param array Labels for the listbox. 5365 * @param enabledArray Which positions are enabled. 5366 * @param selectedArray Which positions are initally selected. 5367 */ 5368 void requestListBox(String[] array, boolean[]enabledArray, int[] 5369 selectedArray) { 5370 mPrivateHandler.post( 5371 new InvokeListBox(array, enabledArray, selectedArray)); 5372 } 5373 5374 /* 5375 * Request a dropdown menu for a listbox with single selection or a single 5376 * <select> element. 5377 * 5378 * @param array Labels for the listbox. 5379 * @param enabledArray Which positions are enabled. 5380 * @param selection Which position is initally selected. 5381 */ 5382 void requestListBox(String[] array, boolean[]enabledArray, int selection) { 5383 mPrivateHandler.post( 5384 new InvokeListBox(array, enabledArray, selection)); 5385 } 5386 5387 // called by JNI 5388 private void sendMoveMouse(int frame, int node, int x, int y) { 5389 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 5390 new WebViewCore.CursorData(frame, node, x, y)); 5391 } 5392 5393 /* 5394 * Send a mouse move event to the webcore thread. 5395 * 5396 * @param removeFocus Pass true if the "mouse" cursor is now over a node 5397 * which wants key events, but it is not the focus. This 5398 * will make the visual appear as though nothing is in 5399 * focus. Remove the WebTextView, if present, and stop 5400 * drawing the blinking caret. 5401 * called by JNI 5402 */ 5403 private void sendMoveMouseIfLatest(boolean removeFocus) { 5404 if (removeFocus) { 5405 clearTextEntry(); 5406 setFocusControllerInactive(); 5407 } 5408 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 5409 cursorData()); 5410 } 5411 5412 // called by JNI 5413 private void sendMotionUp(int touchGeneration, 5414 int frame, int node, int x, int y) { 5415 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5416 touchUpData.mMoveGeneration = touchGeneration; 5417 touchUpData.mFrame = frame; 5418 touchUpData.mNode = node; 5419 touchUpData.mX = x; 5420 touchUpData.mY = y; 5421 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5422 } 5423 5424 5425 private int getScaledMaxXScroll() { 5426 int width; 5427 if (mHeightCanMeasure == false) { 5428 width = getViewWidth() / 4; 5429 } else { 5430 Rect visRect = new Rect(); 5431 calcOurVisibleRect(visRect); 5432 width = visRect.width() / 2; 5433 } 5434 // FIXME the divisor should be retrieved from somewhere 5435 return viewToContentX(width); 5436 } 5437 5438 private int getScaledMaxYScroll() { 5439 int height; 5440 if (mHeightCanMeasure == false) { 5441 height = getViewHeight() / 4; 5442 } else { 5443 Rect visRect = new Rect(); 5444 calcOurVisibleRect(visRect); 5445 height = visRect.height() / 2; 5446 } 5447 // FIXME the divisor should be retrieved from somewhere 5448 // the closest thing today is hard-coded into ScrollView.java 5449 // (from ScrollView.java, line 363) int maxJump = height/2; 5450 return Math.round(height * mInvActualScale); 5451 } 5452 5453 /** 5454 * Called by JNI to invalidate view 5455 */ 5456 private void viewInvalidate() { 5457 invalidate(); 5458 } 5459 5460 // return true if the key was handled 5461 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 5462 long time, boolean ignorePlugin) { 5463 if (mNativeClass == 0) { 5464 return false; 5465 } 5466 if (ignorePlugin == false && nativePluginEatsNavKey()) { 5467 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 5468 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 5469 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 5470 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 5471 , 0, 0, 0); 5472 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5473 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5474 return true; 5475 } 5476 mLastCursorTime = time; 5477 mLastCursorBounds = nativeGetCursorRingBounds(); 5478 boolean keyHandled 5479 = nativeMoveCursor(keyCode, count, noScroll) == false; 5480 if (DebugFlags.WEB_VIEW) { 5481 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 5482 + " mLastCursorTime=" + mLastCursorTime 5483 + " handled=" + keyHandled); 5484 } 5485 if (keyHandled == false || mHeightCanMeasure == false) { 5486 return keyHandled; 5487 } 5488 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 5489 if (contentCursorRingBounds.isEmpty()) return keyHandled; 5490 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 5491 Rect visRect = new Rect(); 5492 calcOurVisibleRect(visRect); 5493 Rect outset = new Rect(visRect); 5494 int maxXScroll = visRect.width() / 2; 5495 int maxYScroll = visRect.height() / 2; 5496 outset.inset(-maxXScroll, -maxYScroll); 5497 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 5498 return keyHandled; 5499 } 5500 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 5501 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 5502 maxXScroll); 5503 if (maxH > 0) { 5504 pinScrollBy(maxH, 0, true, 0); 5505 } else { 5506 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 5507 -maxXScroll); 5508 if (maxH < 0) { 5509 pinScrollBy(maxH, 0, true, 0); 5510 } 5511 } 5512 if (mLastCursorBounds.isEmpty()) return keyHandled; 5513 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 5514 return keyHandled; 5515 } 5516 if (DebugFlags.WEB_VIEW) { 5517 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 5518 + contentCursorRingBounds); 5519 } 5520 requestRectangleOnScreen(viewCursorRingBounds); 5521 mUserScroll = true; 5522 return keyHandled; 5523 } 5524 5525 /** 5526 * Set the background color. It's white by default. Pass 5527 * zero to make the view transparent. 5528 * @param color the ARGB color described by Color.java 5529 */ 5530 public void setBackgroundColor(int color) { 5531 mBackgroundColor = color; 5532 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 5533 } 5534 5535 public void debugDump() { 5536 nativeDebugDump(); 5537 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 5538 } 5539 5540 /** 5541 * Update our cache with updatedText. 5542 * @param updatedText The new text to put in our cache. 5543 */ 5544 /* package */ void updateCachedTextfield(String updatedText) { 5545 // Also place our generation number so that when we look at the cache 5546 // we recognize that it is up to date. 5547 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 5548 } 5549 5550 /* package */ native void nativeClearCursor(); 5551 private native void nativeCreate(int ptr); 5552 private native int nativeCursorFramePointer(); 5553 private native Rect nativeCursorNodeBounds(); 5554 /* package */ native int nativeCursorNodePointer(); 5555 /* package */ native boolean nativeCursorMatchesFocus(); 5556 private native boolean nativeCursorIntersects(Rect visibleRect); 5557 private native boolean nativeCursorIsAnchor(); 5558 private native boolean nativeCursorIsPlugin(); 5559 private native boolean nativeCursorIsTextInput(); 5560 private native Point nativeCursorPosition(); 5561 private native String nativeCursorText(); 5562 /** 5563 * Returns true if the native cursor node says it wants to handle key events 5564 * (ala plugins). This can only be called if mNativeClass is non-zero! 5565 */ 5566 private native boolean nativeCursorWantsKeyEvents(); 5567 private native void nativeDebugDump(); 5568 private native void nativeDestroy(); 5569 private native void nativeDrawCursorRing(Canvas content); 5570 private native void nativeDrawMatches(Canvas canvas); 5571 private native void nativeDrawSelection(Canvas content 5572 , int x, int y, boolean extendSelection); 5573 private native void nativeDrawSelectionRegion(Canvas content); 5574 private native void nativeDumpDisplayTree(String urlOrNull); 5575 private native int nativeFindAll(String findLower, String findUpper); 5576 private native void nativeFindNext(boolean forward); 5577 private native boolean nativeFocusCandidateIsPassword(); 5578 private native boolean nativeFocusCandidateIsRtlText(); 5579 private native boolean nativeFocusCandidateIsTextField(); 5580 private native boolean nativeFocusCandidateIsTextInput(); 5581 private native int nativeFocusCandidateMaxLength(); 5582 /* package */ native String nativeFocusCandidateName(); 5583 private native Rect nativeFocusCandidateNodeBounds(); 5584 /* package */ native int nativeFocusCandidatePointer(); 5585 private native String nativeFocusCandidateText(); 5586 private native int nativeFocusCandidateTextSize(); 5587 /* package */ native int nativeFocusNodePointer(); 5588 private native Rect nativeGetCursorRingBounds(); 5589 private native Region nativeGetSelection(); 5590 private native boolean nativeHasCursorNode(); 5591 private native boolean nativeHasFocusNode(); 5592 private native void nativeHideCursor(); 5593 private native String nativeImageURI(int x, int y); 5594 private native void nativeInstrumentReport(); 5595 /* package */ native void nativeMoveCursorToNextTextInput(); 5596 // return true if the page has been scrolled 5597 private native boolean nativeMotionUp(int x, int y, int slop); 5598 // returns false if it handled the key 5599 private native boolean nativeMoveCursor(int keyCode, int count, 5600 boolean noScroll); 5601 private native int nativeMoveGeneration(); 5602 private native void nativeMoveSelection(int x, int y, 5603 boolean extendSelection); 5604 private native boolean nativePluginEatsNavKey(); 5605 // Like many other of our native methods, you must make sure that 5606 // mNativeClass is not null before calling this method. 5607 private native void nativeRecordButtons(boolean focused, 5608 boolean pressed, boolean invalidate); 5609 private native void nativeSelectBestAt(Rect rect); 5610 private native void nativeSetFindIsDown(); 5611 private native void nativeSetFollowedLink(boolean followed); 5612 private native void nativeSetHeightCanMeasure(boolean measure); 5613 // Returns a value corresponding to CachedFrame::ImeAction 5614 /* package */ native int nativeTextFieldAction(); 5615 /** 5616 * Perform a click on a currently focused text input. Since it is already 5617 * focused, there is no need to go through the nativeMotionUp code, which 5618 * may change the Cursor. 5619 */ 5620 private native void nativeTextInputMotionUp(int x, int y); 5621 private native int nativeTextGeneration(); 5622 // Never call this version except by updateCachedTextfield(String) - 5623 // we always want to pass in our generation number. 5624 private native void nativeUpdateCachedTextfield(String updatedText, 5625 int generation); 5626 private native void nativeUpdatePluginReceivesEvents(); 5627 // return NO_LEFTEDGE means failure. 5628 private static final int NO_LEFTEDGE = -1; 5629 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 5630} 5631