WebView.java revision 4e916ad8c96fd7425e34ca1a8db82720fe046b73
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.content.pm.PackageManager; 25import android.database.DataSetObserver; 26import android.graphics.Bitmap; 27import android.graphics.Canvas; 28import android.graphics.Color; 29import android.graphics.Picture; 30import android.graphics.Point; 31import android.graphics.Rect; 32import android.graphics.Region; 33import android.graphics.drawable.Drawable; 34import android.net.http.SslCertificate; 35import android.net.Uri; 36import android.os.Bundle; 37import android.os.Handler; 38import android.os.Message; 39import android.os.ServiceManager; 40import android.os.SystemClock; 41import android.provider.Checkin; 42import android.text.IClipboard; 43import android.text.Selection; 44import android.text.Spannable; 45import android.util.AttributeSet; 46import android.util.EventLog; 47import android.util.Log; 48import android.util.TypedValue; 49import android.view.Gravity; 50import android.view.KeyEvent; 51import android.view.LayoutInflater; 52import android.view.MotionEvent; 53import android.view.ScaleGestureDetector; 54import android.view.SoundEffectConstants; 55import android.view.VelocityTracker; 56import android.view.View; 57import android.view.ViewConfiguration; 58import android.view.ViewGroup; 59import android.view.ViewParent; 60import android.view.ViewTreeObserver; 61import android.view.animation.AlphaAnimation; 62import android.view.inputmethod.InputMethodManager; 63import android.webkit.WebTextView.AutoCompleteAdapter; 64import android.webkit.WebViewCore.EventHub; 65import android.widget.AbsoluteLayout; 66import android.widget.Adapter; 67import android.widget.AdapterView; 68import android.widget.ArrayAdapter; 69import android.widget.FrameLayout; 70import android.widget.ListView; 71import android.widget.Scroller; 72import android.widget.Toast; 73import android.widget.ZoomButtonsController; 74import android.widget.ZoomControls; 75import android.widget.AdapterView.OnItemClickListener; 76 77import java.io.File; 78import java.io.FileInputStream; 79import java.io.FileNotFoundException; 80import java.io.FileOutputStream; 81import java.io.IOException; 82import java.net.URLDecoder; 83import java.util.ArrayList; 84import java.util.List; 85import java.util.Map; 86 87/** 88 * <p>A View that displays web pages. This class is the basis upon which you 89 * can roll your own web browser or simply display some online content within your Activity. 90 * It uses the WebKit rendering engine to display 91 * web pages and includes methods to navigate forward and backward 92 * through a history, zoom in and out, perform text searches and more.</p> 93 * <p>To enable the built-in zoom, set 94 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 95 * (introduced in API version 3). 96 * <p>Note that, in order for your Activity to access the Internet and load web pages 97 * in a WebView, you must add the <var>INTERNET</var> permissions to your 98 * Android Manifest file:</p> 99 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 100 * 101 * <p>This must be a child of the <code><manifest></code> element.</p> 102 * 103 * <h3>Basic usage</h3> 104 * 105 * <p>By default, a WebView provides no browser-like widgets, does not 106 * enable JavaScript and errors will be ignored. If your goal is only 107 * to display some HTML as a part of your UI, this is probably fine; 108 * the user won't need to interact with the web page beyond reading 109 * it, and the web page won't need to interact with the user. If you 110 * actually want a fully blown web browser, then you probably want to 111 * invoke the Browser application with your URL rather than show it 112 * with a WebView. See {@link android.content.Intent} for more information.</p> 113 * 114 * <pre class="prettyprint"> 115 * WebView webview = new WebView(this); 116 * setContentView(webview); 117 * 118 * // Simplest usage: note that an exception will NOT be thrown 119 * // if there is an error loading this page (see below). 120 * webview.loadUrl("http://slashdot.org/"); 121 * 122 * // Of course you can also load from any string: 123 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 124 * webview.loadData(summary, "text/html", "utf-8"); 125 * // ... although note that there are restrictions on what this HTML can do. 126 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 127 * </pre> 128 * 129 * <p>A WebView has several customization points where you can add your 130 * own behavior. These are:</p> 131 * 132 * <ul> 133 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 134 * This class is called when something that might impact a 135 * browser UI happens, for instance, progress updates and 136 * JavaScript alerts are sent here. 137 * </li> 138 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 139 * It will be called when things happen that impact the 140 * rendering of the content, eg, errors or form submissions. You 141 * can also intercept URL loading here.</li> 142 * <li>Via the {@link android.webkit.WebSettings} class, which contains 143 * miscellaneous configuration. </li> 144 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 145 * This lets you bind Java objects into the WebView so they can be 146 * controlled from the web pages JavaScript.</li> 147 * </ul> 148 * 149 * <p>Here's a more complicated example, showing error handling, 150 * settings, and progress notification:</p> 151 * 152 * <pre class="prettyprint"> 153 * // Let's display the progress in the activity title bar, like the 154 * // browser app does. 155 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 156 * 157 * webview.getSettings().setJavaScriptEnabled(true); 158 * 159 * final Activity activity = this; 160 * webview.setWebChromeClient(new WebChromeClient() { 161 * public void onProgressChanged(WebView view, int progress) { 162 * // Activities and WebViews measure progress with different scales. 163 * // The progress meter will automatically disappear when we reach 100% 164 * activity.setProgress(progress * 1000); 165 * } 166 * }); 167 * webview.setWebViewClient(new WebViewClient() { 168 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 169 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 170 * } 171 * }); 172 * 173 * webview.loadUrl("http://slashdot.org/"); 174 * </pre> 175 * 176 * <h3>Cookie and window management</h3> 177 * 178 * <p>For obvious security reasons, your application has its own 179 * cache, cookie store etc - it does not share the Browser 180 * applications data. Cookies are managed on a separate thread, so 181 * operations like index building don't block the UI 182 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 183 * if you want to use cookies in your application. 184 * </p> 185 * 186 * <p>By default, requests by the HTML to open new windows are 187 * ignored. This is true whether they be opened by JavaScript or by 188 * the target attribute on a link. You can customize your 189 * WebChromeClient to provide your own behaviour for opening multiple windows, 190 * and render them in whatever manner you want.</p> 191 * 192 * <p>Standard behavior for an Activity is to be destroyed and 193 * recreated when the devices orientation is changed. This will cause 194 * the WebView to reload the current page. If you don't want that, you 195 * can set your Activity to handle the orientation and keyboardHidden 196 * changes, and then just leave the WebView alone. It'll automatically 197 * re-orient itself as appropriate.</p> 198 */ 199public class WebView extends AbsoluteLayout 200 implements ViewTreeObserver.OnGlobalFocusChangeListener, 201 ViewGroup.OnHierarchyChangeListener { 202 203 // enable debug output for drag trackers 204 private static final boolean DEBUG_DRAG_TRACKER = false; 205 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 206 // the screen all-the-time. Good for profiling our drawing code 207 static private final boolean AUTO_REDRAW_HACK = false; 208 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 209 private boolean mAutoRedraw; 210 211 static final String LOGTAG = "webview"; 212 213 private static class ExtendedZoomControls extends FrameLayout { 214 public ExtendedZoomControls(Context context, AttributeSet attrs) { 215 super(context, attrs); 216 LayoutInflater inflater = (LayoutInflater) 217 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 218 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 219 mPlusMinusZoomControls = (ZoomControls) findViewById( 220 com.android.internal.R.id.zoomControls); 221 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 222 View.GONE); 223 } 224 225 public void show(boolean showZoom, boolean canZoomOut) { 226 mPlusMinusZoomControls.setVisibility( 227 showZoom ? View.VISIBLE : View.GONE); 228 fade(View.VISIBLE, 0.0f, 1.0f); 229 } 230 231 public void hide() { 232 fade(View.GONE, 1.0f, 0.0f); 233 } 234 235 private void fade(int visibility, float startAlpha, float endAlpha) { 236 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 237 anim.setDuration(500); 238 startAnimation(anim); 239 setVisibility(visibility); 240 } 241 242 public boolean hasFocus() { 243 return mPlusMinusZoomControls.hasFocus(); 244 } 245 246 public void setOnZoomInClickListener(OnClickListener listener) { 247 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 248 } 249 250 public void setOnZoomOutClickListener(OnClickListener listener) { 251 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 252 } 253 254 ZoomControls mPlusMinusZoomControls; 255 } 256 257 /** 258 * Transportation object for returning WebView across thread boundaries. 259 */ 260 public class WebViewTransport { 261 private WebView mWebview; 262 263 /** 264 * Set the WebView to the transportation object. 265 * @param webview The WebView to transport. 266 */ 267 public synchronized void setWebView(WebView webview) { 268 mWebview = webview; 269 } 270 271 /** 272 * Return the WebView object. 273 * @return WebView The transported WebView object. 274 */ 275 public synchronized WebView getWebView() { 276 return mWebview; 277 } 278 } 279 280 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 281 private final CallbackProxy mCallbackProxy; 282 283 private final WebViewDatabase mDatabase; 284 285 // SSL certificate for the main top-level page (if secure) 286 private SslCertificate mCertificate; 287 288 // Native WebView pointer that is 0 until the native object has been 289 // created. 290 private int mNativeClass; 291 // This would be final but it needs to be set to null when the WebView is 292 // destroyed. 293 private WebViewCore mWebViewCore; 294 // Handler for dispatching UI messages. 295 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 296 private WebTextView mWebTextView; 297 // Used to ignore changes to webkit text that arrives to the UI side after 298 // more key events. 299 private int mTextGeneration; 300 301 // Used by WebViewCore to create child views. 302 /* package */ final ViewManager mViewManager; 303 304 /** 305 * Position of the last touch event. 306 */ 307 private float mLastTouchX; 308 private float mLastTouchY; 309 310 /** 311 * Time of the last touch event. 312 */ 313 private long mLastTouchTime; 314 315 /** 316 * Time of the last time sending touch event to WebViewCore 317 */ 318 private long mLastSentTouchTime; 319 320 /** 321 * The minimum elapsed time before sending another ACTION_MOVE event to 322 * WebViewCore. This really should be tuned for each type of the devices. 323 * For example in Google Map api test case, it takes Dream device at least 324 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 325 * triggering the layout and drawing the picture. While the same process 326 * takes 60+ms on the current high speed device. If we make 327 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 328 * to WebViewCore queue and the real layout and draw events will be pushed 329 * to further, which slows down the refresh rate. Choose 50 to favor the 330 * current high speed devices. For Dream like devices, 100 is a better 331 * choice. Maybe make this in the buildspec later. 332 */ 333 private static final int TOUCH_SENT_INTERVAL = 50; 334 335 /** 336 * Helper class to get velocity for fling 337 */ 338 VelocityTracker mVelocityTracker; 339 private int mMaximumFling; 340 private float mLastVelocity; 341 private float mLastVelX; 342 private float mLastVelY; 343 344 /** 345 * Touch mode 346 */ 347 private int mTouchMode = TOUCH_DONE_MODE; 348 private static final int TOUCH_INIT_MODE = 1; 349 private static final int TOUCH_DRAG_START_MODE = 2; 350 private static final int TOUCH_DRAG_MODE = 3; 351 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 352 private static final int TOUCH_SHORTPRESS_MODE = 5; 353 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 354 private static final int TOUCH_DONE_MODE = 7; 355 private static final int TOUCH_SELECT_MODE = 8; 356 private static final int TOUCH_PINCH_DRAG = 9; 357 358 // Whether to forward the touch events to WebCore 359 private boolean mForwardTouchEvents = false; 360 361 // Whether to prevent drag during touch. The initial value depends on 362 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 363 // take control of touch events unless it says no for touch down event. 364 private static final int PREVENT_DRAG_NO = 0; 365 private static final int PREVENT_DRAG_MAYBE_YES = 1; 366 private static final int PREVENT_DRAG_YES = 2; 367 private int mPreventDrag = PREVENT_DRAG_NO; 368 369 // To keep track of whether the current drag was initiated by a WebTextView, 370 // so that we know not to hide the cursor 371 boolean mDragFromTextInput; 372 373 // Whether or not to draw the cursor ring. 374 private boolean mDrawCursorRing = true; 375 376 // true if onPause has been called (and not onResume) 377 private boolean mIsPaused; 378 379 /** 380 * Customizable constant 381 */ 382 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 383 private int mTouchSlopSquare; 384 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 385 private int mDoubleTapSlopSquare; 386 // pre-computed density adjusted navigation slop 387 private int mNavSlop; 388 // This should be ViewConfiguration.getTapTimeout() 389 // But system time out is 100ms, which is too short for the browser. 390 // In the browser, if it switches out of tap too soon, jump tap won't work. 391 private static final int TAP_TIMEOUT = 200; 392 // This should be ViewConfiguration.getLongPressTimeout() 393 // But system time out is 500ms, which is too short for the browser. 394 // With a short timeout, it's difficult to treat trigger a short press. 395 private static final int LONG_PRESS_TIMEOUT = 1000; 396 // needed to avoid flinging after a pause of no movement 397 private static final int MIN_FLING_TIME = 250; 398 // The time that the Zoom Controls are visible before fading away 399 private static final long ZOOM_CONTROLS_TIMEOUT = 400 ViewConfiguration.getZoomControlsTimeout(); 401 // The amount of content to overlap between two screens when going through 402 // pages with the space bar, in pixels. 403 private static final int PAGE_SCROLL_OVERLAP = 24; 404 405 /** 406 * These prevent calling requestLayout if either dimension is fixed. This 407 * depends on the layout parameters and the measure specs. 408 */ 409 boolean mWidthCanMeasure; 410 boolean mHeightCanMeasure; 411 412 // Remember the last dimensions we sent to the native side so we can avoid 413 // sending the same dimensions more than once. 414 int mLastWidthSent; 415 int mLastHeightSent; 416 417 private int mContentWidth; // cache of value from WebViewCore 418 private int mContentHeight; // cache of value from WebViewCore 419 420 // Need to have the separate control for horizontal and vertical scrollbar 421 // style than the View's single scrollbar style 422 private boolean mOverlayHorizontalScrollbar = true; 423 private boolean mOverlayVerticalScrollbar = false; 424 425 // our standard speed. this way small distances will be traversed in less 426 // time than large distances, but we cap the duration, so that very large 427 // distances won't take too long to get there. 428 private static final int STD_SPEED = 480; // pixels per second 429 // time for the longest scroll animation 430 private static final int MAX_DURATION = 750; // milliseconds 431 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 432 private Scroller mScroller; 433 434 private boolean mWrapContent; 435 436 // whether support multi-touch 437 private boolean mSupportMultiTouch; 438 // use the framework's ScaleGestureDetector to handle multi-touch 439 private ScaleGestureDetector mScaleDetector; 440 // minimum scale change during multi-touch zoom 441 private static float PREVIEW_SCALE_INCREMENT = 0.01f; 442 443 // the anchor point in the document space where VIEW_SIZE_CHANGED should 444 // apply to 445 private int mAnchorX; 446 private int mAnchorY; 447 448 /** 449 * Private message ids 450 */ 451 private static final int REMEMBER_PASSWORD = 1; 452 private static final int NEVER_REMEMBER_PASSWORD = 2; 453 private static final int SWITCH_TO_SHORTPRESS = 3; 454 private static final int SWITCH_TO_LONGPRESS = 4; 455 private static final int RELEASE_SINGLE_TAP = 5; 456 private static final int REQUEST_FORM_DATA = 6; 457 private static final int RESUME_WEBCORE_UPDATE = 7; 458 459 //! arg1=x, arg2=y 460 static final int SCROLL_TO_MSG_ID = 10; 461 static final int SCROLL_BY_MSG_ID = 11; 462 //! arg1=x, arg2=y 463 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 464 //! arg1=x, arg2=y 465 static final int SYNC_SCROLL_TO_MSG_ID = 13; 466 static final int NEW_PICTURE_MSG_ID = 14; 467 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 468 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 469 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 470 static final int UPDATE_ZOOM_RANGE = 18; 471 static final int MOVE_OUT_OF_PLUGIN = 19; 472 static final int CLEAR_TEXT_ENTRY = 20; 473 static final int UPDATE_TEXT_SELECTION_MSG_ID = 21; 474 static final int UPDATE_CLIPBOARD = 22; 475 static final int LONG_PRESS_CENTER = 23; 476 static final int PREVENT_TOUCH_ID = 24; 477 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 478 // obj=Rect in doc coordinates 479 static final int INVAL_RECT_MSG_ID = 26; 480 static final int REQUEST_KEYBOARD = 27; 481 static final int SHOW_RECT_MSG_ID = 28; 482 483 static final String[] HandlerDebugString = { 484 "REMEMBER_PASSWORD", // = 1; 485 "NEVER_REMEMBER_PASSWORD", // = 2; 486 "SWITCH_TO_SHORTPRESS", // = 3; 487 "SWITCH_TO_LONGPRESS", // = 4; 488 "RELEASE_SINGLE_TAP", // = 5; 489 "REQUEST_FORM_DATA", // = 6; 490 "SWITCH_TO_CLICK", // = 7; 491 "RESUME_WEBCORE_UPDATE", // = 8; 492 "9", 493 "SCROLL_TO_MSG_ID", // = 10; 494 "SCROLL_BY_MSG_ID", // = 11; 495 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 496 "SYNC_SCROLL_TO_MSG_ID", // = 13; 497 "NEW_PICTURE_MSG_ID", // = 14; 498 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 499 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 500 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 501 "UPDATE_ZOOM_RANGE", // = 18; 502 "MOVE_OUT_OF_PLUGIN", // = 19; 503 "CLEAR_TEXT_ENTRY", // = 20; 504 "UPDATE_TEXT_SELECTION_MSG_ID", // = 21; 505 "UPDATE_CLIPBOARD", // = 22; 506 "LONG_PRESS_CENTER", // = 23; 507 "PREVENT_TOUCH_ID", // = 24; 508 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 509 "INVAL_RECT_MSG_ID", // = 26; 510 "REQUEST_KEYBOARD", // = 27; 511 "SHOW_RECT_MSG_ID" // = 28; 512 }; 513 514 // default scale limit. Depending on the display density 515 private static float DEFAULT_MAX_ZOOM_SCALE; 516 private static float DEFAULT_MIN_ZOOM_SCALE; 517 // scale limit, which can be set through viewport meta tag in the web page 518 private float mMaxZoomScale; 519 private float mMinZoomScale; 520 private boolean mMinZoomScaleFixed = true; 521 522 // initial scale in percent. 0 means using default. 523 private int mInitialScaleInPercent = 0; 524 525 // while in the zoom overview mode, the page's width is fully fit to the 526 // current window. The page is alive, in another words, you can click to 527 // follow the links. Double tap will toggle between zoom overview mode and 528 // the last zoom scale. 529 boolean mInZoomOverview = false; 530 531 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 532 // engadget always have wider mContentWidth no matter what viewport size is. 533 int mZoomOverviewWidth = WebViewCore.DEFAULT_VIEWPORT_WIDTH; 534 float mTextWrapScale; 535 536 // default scale. Depending on the display density. 537 static int DEFAULT_SCALE_PERCENT; 538 private float mDefaultScale; 539 540 // set to true temporarily while the zoom control is being dragged 541 private boolean mPreviewZoomOnly = false; 542 543 // computed scale and inverse, from mZoomWidth. 544 private float mActualScale; 545 private float mInvActualScale; 546 // if this is non-zero, it is used on drawing rather than mActualScale 547 private float mZoomScale; 548 private float mInvInitialZoomScale; 549 private float mInvFinalZoomScale; 550 private int mInitialScrollX; 551 private int mInitialScrollY; 552 private long mZoomStart; 553 private static final int ZOOM_ANIMATION_LENGTH = 500; 554 555 private boolean mUserScroll = false; 556 557 private int mSnapScrollMode = SNAP_NONE; 558 private static final int SNAP_NONE = 1; 559 private static final int SNAP_X = 2; 560 private static final int SNAP_Y = 3; 561 private static final int SNAP_X_LOCK = 4; 562 private static final int SNAP_Y_LOCK = 5; 563 private boolean mSnapPositive; 564 565 // Used to match key downs and key ups 566 private boolean mGotKeyDown; 567 568 /* package */ static boolean mLogEvent = true; 569 private static final int EVENT_LOG_ZOOM_LEVEL_CHANGE = 70101; 570 private static final int EVENT_LOG_DOUBLE_TAP_DURATION = 70102; 571 572 // for event log 573 private long mLastTouchUpTime = 0; 574 575 /** 576 * URI scheme for telephone number 577 */ 578 public static final String SCHEME_TEL = "tel:"; 579 /** 580 * URI scheme for email address 581 */ 582 public static final String SCHEME_MAILTO = "mailto:"; 583 /** 584 * URI scheme for map address 585 */ 586 public static final String SCHEME_GEO = "geo:0,0?q="; 587 588 private int mBackgroundColor = Color.WHITE; 589 590 // Used to notify listeners of a new picture. 591 private PictureListener mPictureListener; 592 /** 593 * Interface to listen for new pictures as they change. 594 */ 595 public interface PictureListener { 596 /** 597 * Notify the listener that the picture has changed. 598 * @param view The WebView that owns the picture. 599 * @param picture The new picture. 600 */ 601 public void onNewPicture(WebView view, Picture picture); 602 } 603 604 // FIXME: Want to make this public, but need to change the API file. 605 public /*static*/ class HitTestResult { 606 /** 607 * Default HitTestResult, where the target is unknown 608 */ 609 public static final int UNKNOWN_TYPE = 0; 610 /** 611 * HitTestResult for hitting a HTML::a tag 612 */ 613 public static final int ANCHOR_TYPE = 1; 614 /** 615 * HitTestResult for hitting a phone number 616 */ 617 public static final int PHONE_TYPE = 2; 618 /** 619 * HitTestResult for hitting a map address 620 */ 621 public static final int GEO_TYPE = 3; 622 /** 623 * HitTestResult for hitting an email address 624 */ 625 public static final int EMAIL_TYPE = 4; 626 /** 627 * HitTestResult for hitting an HTML::img tag 628 */ 629 public static final int IMAGE_TYPE = 5; 630 /** 631 * HitTestResult for hitting a HTML::a tag which contains HTML::img 632 */ 633 public static final int IMAGE_ANCHOR_TYPE = 6; 634 /** 635 * HitTestResult for hitting a HTML::a tag with src=http 636 */ 637 public static final int SRC_ANCHOR_TYPE = 7; 638 /** 639 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 640 */ 641 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 642 /** 643 * HitTestResult for hitting an edit text area 644 */ 645 public static final int EDIT_TEXT_TYPE = 9; 646 647 private int mType; 648 private String mExtra; 649 650 HitTestResult() { 651 mType = UNKNOWN_TYPE; 652 } 653 654 private void setType(int type) { 655 mType = type; 656 } 657 658 private void setExtra(String extra) { 659 mExtra = extra; 660 } 661 662 public int getType() { 663 return mType; 664 } 665 666 public String getExtra() { 667 return mExtra; 668 } 669 } 670 671 // The View containing the zoom controls 672 private ExtendedZoomControls mZoomControls; 673 private Runnable mZoomControlRunnable; 674 675 private ZoomButtonsController mZoomButtonsController; 676 677 // These keep track of the center point of the zoom. They are used to 678 // determine the point around which we should zoom. 679 private float mZoomCenterX; 680 private float mZoomCenterY; 681 682 private ZoomButtonsController.OnZoomListener mZoomListener = 683 new ZoomButtonsController.OnZoomListener() { 684 685 public void onVisibilityChanged(boolean visible) { 686 if (visible) { 687 switchOutDrawHistory(); 688 updateZoomButtonsEnabled(); 689 } 690 } 691 692 public void onZoom(boolean zoomIn) { 693 if (zoomIn) { 694 zoomIn(); 695 } else { 696 zoomOut(); 697 } 698 699 updateZoomButtonsEnabled(); 700 } 701 }; 702 703 /** 704 * Construct a new WebView with a Context object. 705 * @param context A Context object used to access application assets. 706 */ 707 public WebView(Context context) { 708 this(context, null); 709 } 710 711 /** 712 * Construct a new WebView with layout parameters. 713 * @param context A Context object used to access application assets. 714 * @param attrs An AttributeSet passed to our parent. 715 */ 716 public WebView(Context context, AttributeSet attrs) { 717 this(context, attrs, com.android.internal.R.attr.webViewStyle); 718 } 719 720 /** 721 * Construct a new WebView with layout parameters and a default style. 722 * @param context A Context object used to access application assets. 723 * @param attrs An AttributeSet passed to our parent. 724 * @param defStyle The default style resource ID. 725 */ 726 public WebView(Context context, AttributeSet attrs, int defStyle) { 727 this(context, attrs, defStyle, null); 728 } 729 730 /** 731 * Construct a new WebView with layout parameters, a default style and a set 732 * of custom Javscript interfaces to be added to the WebView at initialization 733 * time. This guraratees that these interfaces will be available when the JS 734 * context is initialized. 735 * @param context A Context object used to access application assets. 736 * @param attrs An AttributeSet passed to our parent. 737 * @param defStyle The default style resource ID. 738 * @param javascriptInterfaces is a Map of intareface names, as keys, and 739 * object implementing those interfaces, as values. 740 * @hide pending API council approval. 741 */ 742 protected WebView(Context context, AttributeSet attrs, int defStyle, 743 Map<String, Object> javascriptInterfaces) { 744 super(context, attrs, defStyle); 745 init(); 746 747 mCallbackProxy = new CallbackProxy(context, this); 748 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 749 mDatabase = WebViewDatabase.getInstance(context); 750 mScroller = new Scroller(context); 751 752 mViewManager = new ViewManager(this); 753 754 mZoomButtonsController = new ZoomButtonsController(this); 755 mZoomButtonsController.setOnZoomListener(mZoomListener); 756 // ZoomButtonsController positions the buttons at the bottom, but in 757 // the middle. Change their layout parameters so they appear on the 758 // right. 759 View controls = mZoomButtonsController.getZoomControls(); 760 ViewGroup.LayoutParams params = controls.getLayoutParams(); 761 if (params instanceof FrameLayout.LayoutParams) { 762 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 763 params; 764 frameParams.gravity = Gravity.RIGHT; 765 } 766 updateMultiTouchSupport(context); 767 } 768 769 void updateMultiTouchSupport(Context context) { 770 WebSettings settings = getSettings(); 771 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 772 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 773 && settings.supportZoom() && settings.getBuiltInZoomControls(); 774 if (mSupportMultiTouch && (mScaleDetector == null)) { 775 mScaleDetector = new ScaleGestureDetector(context, 776 new ScaleDetectorListener()); 777 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 778 mScaleDetector = null; 779 } 780 } 781 782 private void updateZoomButtonsEnabled() { 783 boolean canZoomIn = mActualScale < mMaxZoomScale; 784 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 785 if (!canZoomIn && !canZoomOut) { 786 // Hide the zoom in and out buttons, as well as the fit to page 787 // button, if the page cannot zoom 788 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 789 } else { 790 // Bring back the hidden zoom controls. 791 mZoomButtonsController.getZoomControls() 792 .setVisibility(View.VISIBLE); 793 // Set each one individually, as a page may be able to zoom in 794 // or out. 795 mZoomButtonsController.setZoomInEnabled(canZoomIn); 796 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 797 } 798 } 799 800 private void init() { 801 setWillNotDraw(false); 802 setFocusable(true); 803 setFocusableInTouchMode(true); 804 setClickable(true); 805 setLongClickable(true); 806 807 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 808 int slop = configuration.getScaledTouchSlop(); 809 mTouchSlopSquare = slop * slop; 810 mMinLockSnapReverseDistance = slop; 811 slop = configuration.getScaledDoubleTapSlop(); 812 mDoubleTapSlopSquare = slop * slop; 813 final float density = getContext().getResources().getDisplayMetrics().density; 814 // use one line height, 16 based on our current default font, for how 815 // far we allow a touch be away from the edge of a link 816 mNavSlop = (int) (16 * density); 817 // density adjusted scale factors 818 DEFAULT_SCALE_PERCENT = (int) (100 * density); 819 mDefaultScale = density; 820 mActualScale = density; 821 mInvActualScale = 1 / density; 822 mTextWrapScale = density; 823 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 824 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 825 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 826 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 827 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 828 } 829 830 /* package */void updateDefaultZoomDensity(int zoomDensity) { 831 final float density = getContext().getResources().getDisplayMetrics().density 832 * 100 / zoomDensity; 833 if (Math.abs(density - mDefaultScale) > 0.01) { 834 float scaleFactor = density / mDefaultScale; 835 // adjust the limits 836 mNavSlop = (int) (16 * density); 837 DEFAULT_SCALE_PERCENT = (int) (100 * density); 838 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 839 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 840 mDefaultScale = density; 841 mMaxZoomScale *= scaleFactor; 842 mMinZoomScale *= scaleFactor; 843 setNewZoomScale(mActualScale * scaleFactor, true, false); 844 } 845 } 846 847 /* package */ boolean onSavePassword(String schemePlusHost, String username, 848 String password, final Message resumeMsg) { 849 boolean rVal = false; 850 if (resumeMsg == null) { 851 // null resumeMsg implies saving password silently 852 mDatabase.setUsernamePassword(schemePlusHost, username, password); 853 } else { 854 final Message remember = mPrivateHandler.obtainMessage( 855 REMEMBER_PASSWORD); 856 remember.getData().putString("host", schemePlusHost); 857 remember.getData().putString("username", username); 858 remember.getData().putString("password", password); 859 remember.obj = resumeMsg; 860 861 final Message neverRemember = mPrivateHandler.obtainMessage( 862 NEVER_REMEMBER_PASSWORD); 863 neverRemember.getData().putString("host", schemePlusHost); 864 neverRemember.getData().putString("username", username); 865 neverRemember.getData().putString("password", password); 866 neverRemember.obj = resumeMsg; 867 868 new AlertDialog.Builder(getContext()) 869 .setTitle(com.android.internal.R.string.save_password_label) 870 .setMessage(com.android.internal.R.string.save_password_message) 871 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 872 new DialogInterface.OnClickListener() { 873 public void onClick(DialogInterface dialog, int which) { 874 resumeMsg.sendToTarget(); 875 } 876 }) 877 .setNeutralButton(com.android.internal.R.string.save_password_remember, 878 new DialogInterface.OnClickListener() { 879 public void onClick(DialogInterface dialog, int which) { 880 remember.sendToTarget(); 881 } 882 }) 883 .setNegativeButton(com.android.internal.R.string.save_password_never, 884 new DialogInterface.OnClickListener() { 885 public void onClick(DialogInterface dialog, int which) { 886 neverRemember.sendToTarget(); 887 } 888 }) 889 .setOnCancelListener(new OnCancelListener() { 890 public void onCancel(DialogInterface dialog) { 891 resumeMsg.sendToTarget(); 892 } 893 }).show(); 894 // Return true so that WebViewCore will pause while the dialog is 895 // up. 896 rVal = true; 897 } 898 return rVal; 899 } 900 901 @Override 902 public void setScrollBarStyle(int style) { 903 if (style == View.SCROLLBARS_INSIDE_INSET 904 || style == View.SCROLLBARS_OUTSIDE_INSET) { 905 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 906 } else { 907 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 908 } 909 super.setScrollBarStyle(style); 910 } 911 912 /** 913 * Specify whether the horizontal scrollbar has overlay style. 914 * @param overlay TRUE if horizontal scrollbar should have overlay style. 915 */ 916 public void setHorizontalScrollbarOverlay(boolean overlay) { 917 mOverlayHorizontalScrollbar = overlay; 918 } 919 920 /** 921 * Specify whether the vertical scrollbar has overlay style. 922 * @param overlay TRUE if vertical scrollbar should have overlay style. 923 */ 924 public void setVerticalScrollbarOverlay(boolean overlay) { 925 mOverlayVerticalScrollbar = overlay; 926 } 927 928 /** 929 * Return whether horizontal scrollbar has overlay style 930 * @return TRUE if horizontal scrollbar has overlay style. 931 */ 932 public boolean overlayHorizontalScrollbar() { 933 return mOverlayHorizontalScrollbar; 934 } 935 936 /** 937 * Return whether vertical scrollbar has overlay style 938 * @return TRUE if vertical scrollbar has overlay style. 939 */ 940 public boolean overlayVerticalScrollbar() { 941 return mOverlayVerticalScrollbar; 942 } 943 944 /* 945 * Return the width of the view where the content of WebView should render 946 * to. 947 * Note: this can be called from WebCoreThread. 948 */ 949 /* package */ int getViewWidth() { 950 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 951 return getWidth(); 952 } else { 953 return getWidth() - getVerticalScrollbarWidth(); 954 } 955 } 956 957 /* 958 * returns the height of the titlebarview (if any). Does not care about 959 * scrolling 960 */ 961 private int getTitleHeight() { 962 return mTitleBar != null ? mTitleBar.getHeight() : 0; 963 } 964 965 /* 966 * Return the amount of the titlebarview (if any) that is visible 967 */ 968 private int getVisibleTitleHeight() { 969 return Math.max(getTitleHeight() - mScrollY, 0); 970 } 971 972 /* 973 * Return the height of the view where the content of WebView should render 974 * to. Note that this excludes mTitleBar, if there is one. 975 * Note: this can be called from WebCoreThread. 976 */ 977 /* package */ int getViewHeight() { 978 return getViewHeightWithTitle() - getVisibleTitleHeight(); 979 } 980 981 private int getViewHeightWithTitle() { 982 int height = getHeight(); 983 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 984 height -= getHorizontalScrollbarHeight(); 985 } 986 return height; 987 } 988 989 /** 990 * @return The SSL certificate for the main top-level page or null if 991 * there is no certificate (the site is not secure). 992 */ 993 public SslCertificate getCertificate() { 994 return mCertificate; 995 } 996 997 /** 998 * Sets the SSL certificate for the main top-level page. 999 */ 1000 public void setCertificate(SslCertificate certificate) { 1001 // here, the certificate can be null (if the site is not secure) 1002 mCertificate = certificate; 1003 } 1004 1005 //------------------------------------------------------------------------- 1006 // Methods called by activity 1007 //------------------------------------------------------------------------- 1008 1009 /** 1010 * Save the username and password for a particular host in the WebView's 1011 * internal database. 1012 * @param host The host that required the credentials. 1013 * @param username The username for the given host. 1014 * @param password The password for the given host. 1015 */ 1016 public void savePassword(String host, String username, String password) { 1017 mDatabase.setUsernamePassword(host, username, password); 1018 } 1019 1020 /** 1021 * Set the HTTP authentication credentials for a given host and realm. 1022 * 1023 * @param host The host for the credentials. 1024 * @param realm The realm for the credentials. 1025 * @param username The username for the password. If it is null, it means 1026 * password can't be saved. 1027 * @param password The password 1028 */ 1029 public void setHttpAuthUsernamePassword(String host, String realm, 1030 String username, String password) { 1031 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1032 } 1033 1034 /** 1035 * Retrieve the HTTP authentication username and password for a given 1036 * host & realm pair 1037 * 1038 * @param host The host for which the credentials apply. 1039 * @param realm The realm for which the credentials apply. 1040 * @return String[] if found, String[0] is username, which can be null and 1041 * String[1] is password. Return null if it can't find anything. 1042 */ 1043 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1044 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1045 } 1046 1047 /** 1048 * Destroy the internal state of the WebView. This method should be called 1049 * after the WebView has been removed from the view system. No other 1050 * methods may be called on a WebView after destroy. 1051 */ 1052 public void destroy() { 1053 clearTextEntry(); 1054 if (mWebViewCore != null) { 1055 // Set the handlers to null before destroying WebViewCore so no 1056 // more messages will be posted. 1057 mCallbackProxy.setWebViewClient(null); 1058 mCallbackProxy.setWebChromeClient(null); 1059 // Tell WebViewCore to destroy itself 1060 WebViewCore webViewCore = mWebViewCore; 1061 mWebViewCore = null; // prevent using partial webViewCore 1062 webViewCore.destroy(); 1063 // Remove any pending messages that might not be serviced yet. 1064 mPrivateHandler.removeCallbacksAndMessages(null); 1065 mCallbackProxy.removeCallbacksAndMessages(null); 1066 // Wake up the WebCore thread just in case it is waiting for a 1067 // javascript dialog. 1068 synchronized (mCallbackProxy) { 1069 mCallbackProxy.notify(); 1070 } 1071 } 1072 if (mNativeClass != 0) { 1073 nativeDestroy(); 1074 mNativeClass = 0; 1075 } 1076 } 1077 1078 /** 1079 * Enables platform notifications of data state and proxy changes. 1080 */ 1081 public static void enablePlatformNotifications() { 1082 Network.enablePlatformNotifications(); 1083 } 1084 1085 /** 1086 * If platform notifications are enabled, this should be called 1087 * from the Activity's onPause() or onStop(). 1088 */ 1089 public static void disablePlatformNotifications() { 1090 Network.disablePlatformNotifications(); 1091 } 1092 1093 /** 1094 * Sets JavaScript engine flags. 1095 * 1096 * @param flags JS engine flags in a String 1097 * 1098 * @hide pending API solidification 1099 */ 1100 public void setJsFlags(String flags) { 1101 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1102 } 1103 1104 /** 1105 * Inform WebView of the network state. This is used to set 1106 * the javascript property window.navigator.isOnline and 1107 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1108 * @param networkUp boolean indicating if network is available 1109 */ 1110 public void setNetworkAvailable(boolean networkUp) { 1111 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1112 networkUp ? 1 : 0, 0); 1113 } 1114 1115 /** 1116 * Save the state of this WebView used in 1117 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1118 * method no longer stores the display data for this WebView. The previous 1119 * behavior could potentially leak files if {@link #restoreState} was never 1120 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1121 * and restoring the display data. 1122 * @param outState The Bundle to store the WebView state. 1123 * @return The same copy of the back/forward list used to save the state. If 1124 * saveState fails, the returned list will be null. 1125 * @see #savePicture 1126 * @see #restorePicture 1127 */ 1128 public WebBackForwardList saveState(Bundle outState) { 1129 if (outState == null) { 1130 return null; 1131 } 1132 // We grab a copy of the back/forward list because a client of WebView 1133 // may have invalidated the history list by calling clearHistory. 1134 WebBackForwardList list = copyBackForwardList(); 1135 final int currentIndex = list.getCurrentIndex(); 1136 final int size = list.getSize(); 1137 // We should fail saving the state if the list is empty or the index is 1138 // not in a valid range. 1139 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1140 return null; 1141 } 1142 outState.putInt("index", currentIndex); 1143 // FIXME: This should just be a byte[][] instead of ArrayList but 1144 // Parcel.java does not have the code to handle multi-dimensional 1145 // arrays. 1146 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1147 for (int i = 0; i < size; i++) { 1148 WebHistoryItem item = list.getItemAtIndex(i); 1149 if (null == item) { 1150 // FIXME: this shouldn't happen 1151 // need to determine how item got set to null 1152 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1153 return null; 1154 } 1155 byte[] data = item.getFlattenedData(); 1156 if (data == null) { 1157 // It would be very odd to not have any data for a given history 1158 // item. And we will fail to rebuild the history list without 1159 // flattened data. 1160 return null; 1161 } 1162 history.add(data); 1163 } 1164 outState.putSerializable("history", history); 1165 if (mCertificate != null) { 1166 outState.putBundle("certificate", 1167 SslCertificate.saveState(mCertificate)); 1168 } 1169 return list; 1170 } 1171 1172 /** 1173 * Save the current display data to the Bundle given. Used in conjunction 1174 * with {@link #saveState}. 1175 * @param b A Bundle to store the display data. 1176 * @param dest The file to store the serialized picture data. Will be 1177 * overwritten with this WebView's picture data. 1178 * @return True if the picture was successfully saved. 1179 */ 1180 public boolean savePicture(Bundle b, File dest) { 1181 if (dest == null || b == null) { 1182 return false; 1183 } 1184 final Picture p = capturePicture(); 1185 1186 FileOutputStream out = null; 1187 boolean success = false; 1188 try { 1189 out = new FileOutputStream(dest); 1190 p.writeToStream(out); 1191 success = true; 1192 } catch (FileNotFoundException e){ 1193 e.printStackTrace(); 1194 } catch (IOException e) { 1195 e.printStackTrace(); 1196 } catch (RuntimeException e) { 1197 e.printStackTrace(); 1198 } finally { 1199 if (out != null) { 1200 try { 1201 out.close(); 1202 } catch (Throwable t) { 1203 } 1204 } 1205 } 1206 1207 if (success && dest.length() > 0) { 1208 b.putInt("scrollX", mScrollX); 1209 b.putInt("scrollY", mScrollY); 1210 b.putFloat("scale", mActualScale); 1211 b.putFloat("textwrapScale", mTextWrapScale); 1212 b.putBoolean("overview", mInZoomOverview); 1213 return true; 1214 } 1215 return false; 1216 } 1217 1218 /** 1219 * Restore the display data that was save in {@link #savePicture}. Used in 1220 * conjunction with {@link #restoreState}. 1221 * @param b A Bundle containing the saved display data. 1222 * @param src The file where the picture data was stored. 1223 * @return True if the picture was successfully restored. 1224 */ 1225 public boolean restorePicture(Bundle b, File src) { 1226 if (src == null || b == null) { 1227 return false; 1228 } 1229 if (src.exists()) { 1230 Picture p = null; 1231 FileInputStream in = null; 1232 try { 1233 in = new FileInputStream(src); 1234 p = Picture.createFromStream(in); 1235 } catch (FileNotFoundException e){ 1236 e.printStackTrace(); 1237 } catch (RuntimeException e) { 1238 e.printStackTrace(); 1239 } catch (IOException e) { 1240 e.printStackTrace(); 1241 } finally { 1242 if (in != null) { 1243 try { 1244 in.close(); 1245 } catch (Throwable t) { 1246 } 1247 } 1248 } 1249 if (p != null) { 1250 int sx = b.getInt("scrollX", 0); 1251 int sy = b.getInt("scrollY", 0); 1252 float scale = b.getFloat("scale", 1.0f); 1253 mDrawHistory = true; 1254 mHistoryPicture = p; 1255 mScrollX = sx; 1256 mScrollY = sy; 1257 mHistoryWidth = Math.round(p.getWidth() * scale); 1258 mHistoryHeight = Math.round(p.getHeight() * scale); 1259 // as getWidth() / getHeight() of the view are not 1260 // available yet, set up mActualScale, so that when 1261 // onSizeChanged() is called, the rest will be set 1262 // correctly 1263 mActualScale = scale; 1264 mTextWrapScale = b.getFloat("textwrapScale", scale); 1265 mInZoomOverview = b.getBoolean("overview"); 1266 invalidate(); 1267 return true; 1268 } 1269 } 1270 return false; 1271 } 1272 1273 /** 1274 * Restore the state of this WebView from the given map used in 1275 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1276 * be called to restore the state of the WebView before using the object. If 1277 * it is called after the WebView has had a chance to build state (load 1278 * pages, create a back/forward list, etc.) there may be undesirable 1279 * side-effects. Please note that this method no longer restores the 1280 * display data for this WebView. See {@link #savePicture} and {@link 1281 * #restorePicture} for saving and restoring the display data. 1282 * @param inState The incoming Bundle of state. 1283 * @return The restored back/forward list or null if restoreState failed. 1284 * @see #savePicture 1285 * @see #restorePicture 1286 */ 1287 public WebBackForwardList restoreState(Bundle inState) { 1288 WebBackForwardList returnList = null; 1289 if (inState == null) { 1290 return returnList; 1291 } 1292 if (inState.containsKey("index") && inState.containsKey("history")) { 1293 mCertificate = SslCertificate.restoreState( 1294 inState.getBundle("certificate")); 1295 1296 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1297 final int index = inState.getInt("index"); 1298 // We can't use a clone of the list because we need to modify the 1299 // shared copy, so synchronize instead to prevent concurrent 1300 // modifications. 1301 synchronized (list) { 1302 final List<byte[]> history = 1303 (List<byte[]>) inState.getSerializable("history"); 1304 final int size = history.size(); 1305 // Check the index bounds so we don't crash in native code while 1306 // restoring the history index. 1307 if (index < 0 || index >= size) { 1308 return null; 1309 } 1310 for (int i = 0; i < size; i++) { 1311 byte[] data = history.remove(0); 1312 if (data == null) { 1313 // If we somehow have null data, we cannot reconstruct 1314 // the item and thus our history list cannot be rebuilt. 1315 return null; 1316 } 1317 WebHistoryItem item = new WebHistoryItem(data); 1318 list.addHistoryItem(item); 1319 } 1320 // Grab the most recent copy to return to the caller. 1321 returnList = copyBackForwardList(); 1322 // Update the copy to have the correct index. 1323 returnList.setCurrentIndex(index); 1324 } 1325 // Remove all pending messages because we are restoring previous 1326 // state. 1327 mWebViewCore.removeMessages(); 1328 // Send a restore state message. 1329 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1330 } 1331 return returnList; 1332 } 1333 1334 /** 1335 * Load the given url. 1336 * @param url The url of the resource to load. 1337 */ 1338 public void loadUrl(String url) { 1339 if (url == null) { 1340 return; 1341 } 1342 switchOutDrawHistory(); 1343 mWebViewCore.sendMessage(EventHub.LOAD_URL, url); 1344 clearTextEntry(); 1345 } 1346 1347 /** 1348 * Load the url with postData using "POST" method into the WebView. If url 1349 * is not a network url, it will be loaded with {link 1350 * {@link #loadUrl(String)} instead. 1351 * 1352 * @param url The url of the resource to load. 1353 * @param postData The data will be passed to "POST" request. 1354 */ 1355 public void postUrl(String url, byte[] postData) { 1356 if (URLUtil.isNetworkUrl(url)) { 1357 switchOutDrawHistory(); 1358 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1359 arg.mUrl = url; 1360 arg.mPostData = postData; 1361 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1362 clearTextEntry(); 1363 } else { 1364 loadUrl(url); 1365 } 1366 } 1367 1368 /** 1369 * Load the given data into the WebView. This will load the data into 1370 * WebView using the data: scheme. Content loaded through this mechanism 1371 * does not have the ability to load content from the network. 1372 * @param data A String of data in the given encoding. 1373 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1374 * @param encoding The encoding of the data. i.e. utf-8, base64 1375 */ 1376 public void loadData(String data, String mimeType, String encoding) { 1377 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1378 } 1379 1380 /** 1381 * Load the given data into the WebView, use the provided URL as the base 1382 * URL for the content. The base URL is the URL that represents the page 1383 * that is loaded through this interface. As such, it is used for the 1384 * history entry and to resolve any relative URLs. The failUrl is used if 1385 * browser fails to load the data provided. If it is empty or null, and the 1386 * load fails, then no history entry is created. 1387 * <p> 1388 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1389 * files through "file:///android_asset/" for the sub resources is more 1390 * restricted. If you provide null or empty string as baseUrl, you won't be 1391 * able to access asset files. If the baseUrl is anything other than 1392 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1393 * sub resources. 1394 * 1395 * @param baseUrl Url to resolve relative paths with, if null defaults to 1396 * "about:blank" 1397 * @param data A String of data in the given encoding. 1398 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1399 * defaults to "text/html" 1400 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1401 * @param failUrl URL to use if the content fails to load or null. 1402 */ 1403 public void loadDataWithBaseURL(String baseUrl, String data, 1404 String mimeType, String encoding, String failUrl) { 1405 1406 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1407 loadData(data, mimeType, encoding); 1408 return; 1409 } 1410 switchOutDrawHistory(); 1411 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1412 arg.mBaseUrl = baseUrl; 1413 arg.mData = data; 1414 arg.mMimeType = mimeType; 1415 arg.mEncoding = encoding; 1416 arg.mFailUrl = failUrl; 1417 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1418 clearTextEntry(); 1419 } 1420 1421 /** 1422 * Stop the current load. 1423 */ 1424 public void stopLoading() { 1425 // TODO: should we clear all the messages in the queue before sending 1426 // STOP_LOADING? 1427 switchOutDrawHistory(); 1428 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1429 } 1430 1431 /** 1432 * Reload the current url. 1433 */ 1434 public void reload() { 1435 clearTextEntry(); 1436 switchOutDrawHistory(); 1437 mWebViewCore.sendMessage(EventHub.RELOAD); 1438 } 1439 1440 /** 1441 * Return true if this WebView has a back history item. 1442 * @return True iff this WebView has a back history item. 1443 */ 1444 public boolean canGoBack() { 1445 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1446 synchronized (l) { 1447 if (l.getClearPending()) { 1448 return false; 1449 } else { 1450 return l.getCurrentIndex() > 0; 1451 } 1452 } 1453 } 1454 1455 /** 1456 * Go back in the history of this WebView. 1457 */ 1458 public void goBack() { 1459 goBackOrForward(-1); 1460 } 1461 1462 /** 1463 * Return true if this WebView has a forward history item. 1464 * @return True iff this Webview has a forward history item. 1465 */ 1466 public boolean canGoForward() { 1467 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1468 synchronized (l) { 1469 if (l.getClearPending()) { 1470 return false; 1471 } else { 1472 return l.getCurrentIndex() < l.getSize() - 1; 1473 } 1474 } 1475 } 1476 1477 /** 1478 * Go forward in the history of this WebView. 1479 */ 1480 public void goForward() { 1481 goBackOrForward(1); 1482 } 1483 1484 /** 1485 * Return true if the page can go back or forward the given 1486 * number of steps. 1487 * @param steps The negative or positive number of steps to move the 1488 * history. 1489 */ 1490 public boolean canGoBackOrForward(int steps) { 1491 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1492 synchronized (l) { 1493 if (l.getClearPending()) { 1494 return false; 1495 } else { 1496 int newIndex = l.getCurrentIndex() + steps; 1497 return newIndex >= 0 && newIndex < l.getSize(); 1498 } 1499 } 1500 } 1501 1502 /** 1503 * Go to the history item that is the number of steps away from 1504 * the current item. Steps is negative if backward and positive 1505 * if forward. 1506 * @param steps The number of steps to take back or forward in the back 1507 * forward list. 1508 */ 1509 public void goBackOrForward(int steps) { 1510 goBackOrForward(steps, false); 1511 } 1512 1513 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1514 // every time we go back or forward, we want to reset the 1515 // WebView certificate: 1516 // if the new site is secure, we will reload it and get a 1517 // new certificate set; 1518 // if the new site is not secure, the certificate must be 1519 // null, and that will be the case 1520 mCertificate = null; 1521 if (steps != 0) { 1522 clearTextEntry(); 1523 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1524 ignoreSnapshot ? 1 : 0); 1525 } 1526 } 1527 1528 private boolean extendScroll(int y) { 1529 int finalY = mScroller.getFinalY(); 1530 int newY = pinLocY(finalY + y); 1531 if (newY == finalY) return false; 1532 mScroller.setFinalY(newY); 1533 mScroller.extendDuration(computeDuration(0, y)); 1534 return true; 1535 } 1536 1537 /** 1538 * Scroll the contents of the view up by half the view size 1539 * @param top true to jump to the top of the page 1540 * @return true if the page was scrolled 1541 */ 1542 public boolean pageUp(boolean top) { 1543 if (mNativeClass == 0) { 1544 return false; 1545 } 1546 nativeClearCursor(); // start next trackball movement from page edge 1547 if (top) { 1548 // go to the top of the document 1549 return pinScrollTo(mScrollX, 0, true, 0); 1550 } 1551 // Page up 1552 int h = getHeight(); 1553 int y; 1554 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1555 y = -h + PAGE_SCROLL_OVERLAP; 1556 } else { 1557 y = -h / 2; 1558 } 1559 mUserScroll = true; 1560 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1561 : extendScroll(y); 1562 } 1563 1564 /** 1565 * Scroll the contents of the view down by half the page size 1566 * @param bottom true to jump to bottom of page 1567 * @return true if the page was scrolled 1568 */ 1569 public boolean pageDown(boolean bottom) { 1570 if (mNativeClass == 0) { 1571 return false; 1572 } 1573 nativeClearCursor(); // start next trackball movement from page edge 1574 if (bottom) { 1575 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1576 } 1577 // Page down. 1578 int h = getHeight(); 1579 int y; 1580 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1581 y = h - PAGE_SCROLL_OVERLAP; 1582 } else { 1583 y = h / 2; 1584 } 1585 mUserScroll = true; 1586 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1587 : extendScroll(y); 1588 } 1589 1590 /** 1591 * Clear the view so that onDraw() will draw nothing but white background, 1592 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1593 */ 1594 public void clearView() { 1595 mContentWidth = 0; 1596 mContentHeight = 0; 1597 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1598 } 1599 1600 /** 1601 * Return a new picture that captures the current display of the webview. 1602 * This is a copy of the display, and will be unaffected if the webview 1603 * later loads a different URL. 1604 * 1605 * @return a picture containing the current contents of the view. Note this 1606 * picture is of the entire document, and is not restricted to the 1607 * bounds of the view. 1608 */ 1609 public Picture capturePicture() { 1610 if (null == mWebViewCore) return null; // check for out of memory tab 1611 return mWebViewCore.copyContentPicture(); 1612 } 1613 1614 /** 1615 * Return true if the browser is displaying a TextView for text input. 1616 */ 1617 private boolean inEditingMode() { 1618 return mWebTextView != null && mWebTextView.getParent() != null 1619 && mWebTextView.hasFocus(); 1620 } 1621 1622 private void clearTextEntry() { 1623 if (inEditingMode()) { 1624 mWebTextView.remove(); 1625 } 1626 } 1627 1628 /** 1629 * Return the current scale of the WebView 1630 * @return The current scale. 1631 */ 1632 public float getScale() { 1633 return mActualScale; 1634 } 1635 1636 /** 1637 * Set the initial scale for the WebView. 0 means default. If 1638 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1639 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1640 * WebView starts will this value as initial scale. 1641 * 1642 * @param scaleInPercent The initial scale in percent. 1643 */ 1644 public void setInitialScale(int scaleInPercent) { 1645 mInitialScaleInPercent = scaleInPercent; 1646 } 1647 1648 /** 1649 * Invoke the graphical zoom picker widget for this WebView. This will 1650 * result in the zoom widget appearing on the screen to control the zoom 1651 * level of this WebView. 1652 */ 1653 public void invokeZoomPicker() { 1654 if (!getSettings().supportZoom()) { 1655 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1656 return; 1657 } 1658 clearTextEntry(); 1659 if (getSettings().getBuiltInZoomControls()) { 1660 mZoomButtonsController.setVisible(true); 1661 } else { 1662 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1663 mPrivateHandler.postDelayed(mZoomControlRunnable, 1664 ZOOM_CONTROLS_TIMEOUT); 1665 } 1666 } 1667 1668 /** 1669 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1670 * is found and the anchor has a non-javascript url, the HitTestResult type 1671 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1672 * anchor does not have a url or if it is a javascript url, the type will 1673 * be UNKNOWN_TYPE and the url has to be retrieved through 1674 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1675 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1676 * the "extra" field. A type of 1677 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1678 * a child node. If a phone number is found, the HitTestResult type is set 1679 * to PHONE_TYPE and the phone number is set in the "extra" field of 1680 * HitTestResult. If a map address is found, the HitTestResult type is set 1681 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1682 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1683 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1684 * HitTestResult type is set to UNKNOWN_TYPE. 1685 */ 1686 public HitTestResult getHitTestResult() { 1687 if (mNativeClass == 0) { 1688 return null; 1689 } 1690 1691 HitTestResult result = new HitTestResult(); 1692 if (nativeHasCursorNode()) { 1693 if (nativeCursorIsTextInput()) { 1694 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1695 } else { 1696 String text = nativeCursorText(); 1697 if (text != null) { 1698 if (text.startsWith(SCHEME_TEL)) { 1699 result.setType(HitTestResult.PHONE_TYPE); 1700 result.setExtra(text.substring(SCHEME_TEL.length())); 1701 } else if (text.startsWith(SCHEME_MAILTO)) { 1702 result.setType(HitTestResult.EMAIL_TYPE); 1703 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1704 } else if (text.startsWith(SCHEME_GEO)) { 1705 result.setType(HitTestResult.GEO_TYPE); 1706 result.setExtra(URLDecoder.decode(text 1707 .substring(SCHEME_GEO.length()))); 1708 } else if (nativeCursorIsAnchor()) { 1709 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1710 result.setExtra(text); 1711 } 1712 } 1713 } 1714 } 1715 int type = result.getType(); 1716 if (type == HitTestResult.UNKNOWN_TYPE 1717 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1718 // Now check to see if it is an image. 1719 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1720 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1721 String text = nativeImageURI(contentX, contentY); 1722 if (text != null) { 1723 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1724 HitTestResult.IMAGE_TYPE : 1725 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1726 result.setExtra(text); 1727 } 1728 } 1729 return result; 1730 } 1731 1732 /** 1733 * Request the href of an anchor element due to getFocusNodePath returning 1734 * "href." If hrefMsg is null, this method returns immediately and does not 1735 * dispatch hrefMsg to its target. 1736 * 1737 * @param hrefMsg This message will be dispatched with the result of the 1738 * request as the data member with "url" as key. The result can 1739 * be null. 1740 */ 1741 // FIXME: API change required to change the name of this function. We now 1742 // look at the cursor node, and not the focus node. Also, what is 1743 // getFocusNodePath? 1744 public void requestFocusNodeHref(Message hrefMsg) { 1745 if (hrefMsg == null || mNativeClass == 0) { 1746 return; 1747 } 1748 if (nativeCursorIsAnchor()) { 1749 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1750 nativeCursorFramePointer(), nativeCursorNodePointer(), 1751 hrefMsg); 1752 } 1753 } 1754 1755 /** 1756 * Request the url of the image last touched by the user. msg will be sent 1757 * to its target with a String representing the url as its object. 1758 * 1759 * @param msg This message will be dispatched with the result of the request 1760 * as the data member with "url" as key. The result can be null. 1761 */ 1762 public void requestImageRef(Message msg) { 1763 if (0 == mNativeClass) return; // client isn't initialized 1764 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1765 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1766 String ref = nativeImageURI(contentX, contentY); 1767 Bundle data = msg.getData(); 1768 data.putString("url", ref); 1769 msg.setData(data); 1770 msg.sendToTarget(); 1771 } 1772 1773 private static int pinLoc(int x, int viewMax, int docMax) { 1774// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1775 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1776 // pin the short document to the top/left of the screen 1777 x = 0; 1778// Log.d(LOGTAG, "--- center " + x); 1779 } else if (x < 0) { 1780 x = 0; 1781// Log.d(LOGTAG, "--- zero"); 1782 } else if (x + viewMax > docMax) { 1783 x = docMax - viewMax; 1784// Log.d(LOGTAG, "--- pin " + x); 1785 } 1786 return x; 1787 } 1788 1789 // Expects x in view coordinates 1790 private int pinLocX(int x) { 1791 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1792 } 1793 1794 // Expects y in view coordinates 1795 private int pinLocY(int y) { 1796 int titleH = getTitleHeight(); 1797 // if the titlebar is still visible, just pin against 0 1798 if (y <= titleH) { 1799 return Math.max(y, 0); 1800 } 1801 // convert to 0-based coordinate (subtract the title height) 1802 // pin(), and then add the title height back in 1803 return pinLoc(y - titleH, getViewHeight(), 1804 computeVerticalScrollRange()) + titleH; 1805 } 1806 1807 /** 1808 * A title bar which is embedded in this WebView, and scrolls along with it 1809 * vertically, but not horizontally. 1810 */ 1811 private View mTitleBar; 1812 1813 /** 1814 * Since we draw the title bar ourselves, we removed the shadow from the 1815 * browser's activity. We do want a shadow at the bottom of the title bar, 1816 * or at the top of the screen if the title bar is not visible. This 1817 * drawable serves that purpose. 1818 */ 1819 private Drawable mTitleShadow; 1820 1821 /** 1822 * Add or remove a title bar to be embedded into the WebView, and scroll 1823 * along with it vertically, while remaining in view horizontally. Pass 1824 * null to remove the title bar from the WebView, and return to drawing 1825 * the WebView normally without translating to account for the title bar. 1826 * @hide 1827 */ 1828 public void setEmbeddedTitleBar(View v) { 1829 if (mTitleBar == v) return; 1830 if (mTitleBar != null) { 1831 removeView(mTitleBar); 1832 } 1833 if (null != v) { 1834 addView(v, new AbsoluteLayout.LayoutParams( 1835 ViewGroup.LayoutParams.FILL_PARENT, 1836 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1837 if (mTitleShadow == null) { 1838 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1839 com.android.internal.R.drawable.title_bar_shadow); 1840 } 1841 } 1842 mTitleBar = v; 1843 } 1844 1845 /** 1846 * Given a distance in view space, convert it to content space. Note: this 1847 * does not reflect translation, just scaling, so this should not be called 1848 * with coordinates, but should be called for dimensions like width or 1849 * height. 1850 */ 1851 private int viewToContentDimension(int d) { 1852 return Math.round(d * mInvActualScale); 1853 } 1854 1855 /** 1856 * Given an x coordinate in view space, convert it to content space. Also 1857 * may be used for absolute heights (such as for the WebTextView's 1858 * textSize, which is unaffected by the height of the title bar). 1859 */ 1860 /*package*/ int viewToContentX(int x) { 1861 return viewToContentDimension(x); 1862 } 1863 1864 /** 1865 * Given a y coordinate in view space, convert it to content space. 1866 * Takes into account the height of the title bar if there is one 1867 * embedded into the WebView. 1868 */ 1869 /*package*/ int viewToContentY(int y) { 1870 return viewToContentDimension(y - getTitleHeight()); 1871 } 1872 1873 /** 1874 * Given a distance in content space, convert it to view space. Note: this 1875 * does not reflect translation, just scaling, so this should not be called 1876 * with coordinates, but should be called for dimensions like width or 1877 * height. 1878 */ 1879 /*package*/ int contentToViewDimension(int d) { 1880 return Math.round(d * mActualScale); 1881 } 1882 1883 /** 1884 * Given an x coordinate in content space, convert it to view 1885 * space. 1886 */ 1887 /*package*/ int contentToViewX(int x) { 1888 return contentToViewDimension(x); 1889 } 1890 1891 /** 1892 * Given a y coordinate in content space, convert it to view 1893 * space. Takes into account the height of the title bar. 1894 */ 1895 /*package*/ int contentToViewY(int y) { 1896 return contentToViewDimension(y) + getTitleHeight(); 1897 } 1898 1899 private Rect contentToViewRect(Rect x) { 1900 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 1901 contentToViewX(x.right), contentToViewY(x.bottom)); 1902 } 1903 1904 /* To invalidate a rectangle in content coordinates, we need to transform 1905 the rect into view coordinates, so we can then call invalidate(...). 1906 1907 Normally, we would just call contentToView[XY](...), which eventually 1908 calls Math.round(coordinate * mActualScale). However, for invalidates, 1909 we need to account for the slop that occurs with antialiasing. To 1910 address that, we are a little more liberal in the size of the rect that 1911 we invalidate. 1912 1913 This liberal calculation calls floor() for the top/left, and ceil() for 1914 the bottom/right coordinates. This catches the possible extra pixels of 1915 antialiasing that we might have missed with just round(). 1916 */ 1917 1918 // Called by JNI to invalidate the View, given rectangle coordinates in 1919 // content space 1920 private void viewInvalidate(int l, int t, int r, int b) { 1921 final float scale = mActualScale; 1922 final int dy = getTitleHeight(); 1923 invalidate((int)Math.floor(l * scale), 1924 (int)Math.floor(t * scale) + dy, 1925 (int)Math.ceil(r * scale), 1926 (int)Math.ceil(b * scale) + dy); 1927 } 1928 1929 // Called by JNI to invalidate the View after a delay, given rectangle 1930 // coordinates in content space 1931 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1932 final float scale = mActualScale; 1933 final int dy = getTitleHeight(); 1934 postInvalidateDelayed(delay, 1935 (int)Math.floor(l * scale), 1936 (int)Math.floor(t * scale) + dy, 1937 (int)Math.ceil(r * scale), 1938 (int)Math.ceil(b * scale) + dy); 1939 } 1940 1941 private void invalidateContentRect(Rect r) { 1942 viewInvalidate(r.left, r.top, r.right, r.bottom); 1943 } 1944 1945 // stop the scroll animation, and don't let a subsequent fling add 1946 // to the existing velocity 1947 private void abortAnimation() { 1948 mScroller.abortAnimation(); 1949 mLastVelocity = 0; 1950 } 1951 1952 /* call from webcoreview.draw(), so we're still executing in the UI thread 1953 */ 1954 private void recordNewContentSize(int w, int h, boolean updateLayout) { 1955 1956 // premature data from webkit, ignore 1957 if ((w | h) == 0) { 1958 return; 1959 } 1960 1961 // don't abort a scroll animation if we didn't change anything 1962 if (mContentWidth != w || mContentHeight != h) { 1963 // record new dimensions 1964 mContentWidth = w; 1965 mContentHeight = h; 1966 // If history Picture is drawn, don't update scroll. They will be 1967 // updated when we get out of that mode. 1968 if (!mDrawHistory) { 1969 // repin our scroll, taking into account the new content size 1970 int oldX = mScrollX; 1971 int oldY = mScrollY; 1972 mScrollX = pinLocX(mScrollX); 1973 mScrollY = pinLocY(mScrollY); 1974 if (oldX != mScrollX || oldY != mScrollY) { 1975 sendOurVisibleRect(); 1976 } 1977 if (!mScroller.isFinished()) { 1978 // We are in the middle of a scroll. Repin the final scroll 1979 // position. 1980 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 1981 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 1982 } 1983 } 1984 } 1985 contentSizeChanged(updateLayout); 1986 } 1987 1988 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 1989 boolean force) { 1990 if (scale < mMinZoomScale) { 1991 scale = mMinZoomScale; 1992 } else if (scale > mMaxZoomScale) { 1993 scale = mMaxZoomScale; 1994 } 1995 if (updateTextWrapScale) { 1996 mTextWrapScale = scale; 1997 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 1998 mLastHeightSent = 0; 1999 } 2000 if (scale != mActualScale || force) { 2001 if (mDrawHistory) { 2002 // If history Picture is drawn, don't update scroll. They will 2003 // be updated when we get out of that mode. 2004 if (scale != mActualScale && !mPreviewZoomOnly) { 2005 mCallbackProxy.onScaleChanged(mActualScale, scale); 2006 } 2007 mActualScale = scale; 2008 mInvActualScale = 1 / scale; 2009 sendViewSizeZoom(); 2010 } else { 2011 // update our scroll so we don't appear to jump 2012 // i.e. keep the center of the doc in the center of the view 2013 2014 int oldX = mScrollX; 2015 int oldY = mScrollY; 2016 float ratio = scale * mInvActualScale; // old inverse 2017 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2018 float sy = ratio * oldY + (ratio - 1) 2019 * (mZoomCenterY - getTitleHeight()); 2020 2021 // now update our new scale and inverse 2022 if (scale != mActualScale && !mPreviewZoomOnly) { 2023 mCallbackProxy.onScaleChanged(mActualScale, scale); 2024 } 2025 mActualScale = scale; 2026 mInvActualScale = 1 / scale; 2027 2028 // Scale all the child views 2029 mViewManager.scaleAll(); 2030 2031 // as we don't have animation for scaling, don't do animation 2032 // for scrolling, as it causes weird intermediate state 2033 // pinScrollTo(Math.round(sx), Math.round(sy)); 2034 mScrollX = pinLocX(Math.round(sx)); 2035 mScrollY = pinLocY(Math.round(sy)); 2036 2037 // update webkit 2038 sendViewSizeZoom(); 2039 sendOurVisibleRect(); 2040 } 2041 } 2042 } 2043 2044 // Used to avoid sending many visible rect messages. 2045 private Rect mLastVisibleRectSent; 2046 private Rect mLastGlobalRect; 2047 2048 private Rect sendOurVisibleRect() { 2049 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2050 2051 Rect rect = new Rect(); 2052 calcOurContentVisibleRect(rect); 2053 // Rect.equals() checks for null input. 2054 if (!rect.equals(mLastVisibleRectSent)) { 2055 Point pos = new Point(rect.left, rect.top); 2056 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2057 nativeMoveGeneration(), 0, pos); 2058 mLastVisibleRectSent = rect; 2059 } 2060 Rect globalRect = new Rect(); 2061 if (getGlobalVisibleRect(globalRect) 2062 && !globalRect.equals(mLastGlobalRect)) { 2063 if (DebugFlags.WEB_VIEW) { 2064 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2065 + globalRect.top + ",r=" + globalRect.right + ",b=" 2066 + globalRect.bottom); 2067 } 2068 // TODO: the global offset is only used by windowRect() 2069 // in ChromeClientAndroid ; other clients such as touch 2070 // and mouse events could return view + screen relative points. 2071 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2072 mLastGlobalRect = globalRect; 2073 } 2074 return rect; 2075 } 2076 2077 // Sets r to be the visible rectangle of our webview in view coordinates 2078 private void calcOurVisibleRect(Rect r) { 2079 Point p = new Point(); 2080 getGlobalVisibleRect(r, p); 2081 r.offset(-p.x, -p.y); 2082 if (mFindIsUp) { 2083 r.bottom -= mFindHeight; 2084 } 2085 } 2086 2087 // Sets r to be our visible rectangle in content coordinates 2088 private void calcOurContentVisibleRect(Rect r) { 2089 calcOurVisibleRect(r); 2090 r.left = viewToContentX(r.left); 2091 // viewToContentY will remove the total height of the title bar. Add 2092 // the visible height back in to account for the fact that if the title 2093 // bar is partially visible, the part of the visible rect which is 2094 // displaying our content is displaced by that amount. 2095 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2096 r.right = viewToContentX(r.right); 2097 r.bottom = viewToContentY(r.bottom); 2098 } 2099 2100 static class ViewSizeData { 2101 int mWidth; 2102 int mHeight; 2103 int mTextWrapWidth; 2104 int mAnchorX; 2105 int mAnchorY; 2106 float mScale; 2107 boolean mIgnoreHeight; 2108 } 2109 2110 /** 2111 * Compute unzoomed width and height, and if they differ from the last 2112 * values we sent, send them to webkit (to be used has new viewport) 2113 * 2114 * @return true if new values were sent 2115 */ 2116 private boolean sendViewSizeZoom() { 2117 if (mPreviewZoomOnly) return false; 2118 2119 int viewWidth = getViewWidth(); 2120 int newWidth = Math.round(viewWidth * mInvActualScale); 2121 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2122 /* 2123 * Because the native side may have already done a layout before the 2124 * View system was able to measure us, we have to send a height of 0 to 2125 * remove excess whitespace when we grow our width. This will trigger a 2126 * layout and a change in content size. This content size change will 2127 * mean that contentSizeChanged will either call this method directly or 2128 * indirectly from onSizeChanged. 2129 */ 2130 if (newWidth > mLastWidthSent && mWrapContent) { 2131 newHeight = 0; 2132 } 2133 // Avoid sending another message if the dimensions have not changed. 2134 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2135 ViewSizeData data = new ViewSizeData(); 2136 data.mWidth = newWidth; 2137 data.mHeight = newHeight; 2138 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2139 data.mScale = mActualScale; 2140 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2141 data.mAnchorX = mAnchorX; 2142 data.mAnchorY = mAnchorY; 2143 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2144 mLastWidthSent = newWidth; 2145 mLastHeightSent = newHeight; 2146 mAnchorX = mAnchorY = 0; 2147 return true; 2148 } 2149 return false; 2150 } 2151 2152 @Override 2153 protected int computeHorizontalScrollRange() { 2154 if (mDrawHistory) { 2155 return mHistoryWidth; 2156 } else { 2157 // to avoid rounding error caused unnecessary scrollbar, use floor 2158 return (int) Math.floor(mContentWidth * mActualScale); 2159 } 2160 } 2161 2162 @Override 2163 protected int computeVerticalScrollRange() { 2164 if (mDrawHistory) { 2165 return mHistoryHeight; 2166 } else { 2167 // to avoid rounding error caused unnecessary scrollbar, use floor 2168 return (int) Math.floor(mContentHeight * mActualScale); 2169 } 2170 } 2171 2172 @Override 2173 protected int computeVerticalScrollOffset() { 2174 return Math.max(mScrollY - getTitleHeight(), 0); 2175 } 2176 2177 @Override 2178 protected int computeVerticalScrollExtent() { 2179 return getViewHeight(); 2180 } 2181 2182 /** @hide */ 2183 @Override 2184 protected void onDrawVerticalScrollBar(Canvas canvas, 2185 Drawable scrollBar, 2186 int l, int t, int r, int b) { 2187 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2188 scrollBar.draw(canvas); 2189 } 2190 2191 /** 2192 * Get the url for the current page. This is not always the same as the url 2193 * passed to WebViewClient.onPageStarted because although the load for 2194 * that url has begun, the current page may not have changed. 2195 * @return The url for the current page. 2196 */ 2197 public String getUrl() { 2198 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2199 return h != null ? h.getUrl() : null; 2200 } 2201 2202 /** 2203 * Get the original url for the current page. This is not always the same 2204 * as the url passed to WebViewClient.onPageStarted because although the 2205 * load for that url has begun, the current page may not have changed. 2206 * Also, there may have been redirects resulting in a different url to that 2207 * originally requested. 2208 * @return The url that was originally requested for the current page. 2209 */ 2210 public String getOriginalUrl() { 2211 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2212 return h != null ? h.getOriginalUrl() : null; 2213 } 2214 2215 /** 2216 * Get the title for the current page. This is the title of the current page 2217 * until WebViewClient.onReceivedTitle is called. 2218 * @return The title for the current page. 2219 */ 2220 public String getTitle() { 2221 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2222 return h != null ? h.getTitle() : null; 2223 } 2224 2225 /** 2226 * Get the favicon for the current page. This is the favicon of the current 2227 * page until WebViewClient.onReceivedIcon is called. 2228 * @return The favicon for the current page. 2229 */ 2230 public Bitmap getFavicon() { 2231 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2232 return h != null ? h.getFavicon() : null; 2233 } 2234 2235 /** 2236 * Get the touch icon url for the apple-touch-icon <link> element. 2237 * @hide 2238 */ 2239 public String getTouchIconUrl() { 2240 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2241 return h != null ? h.getTouchIconUrl() : null; 2242 } 2243 2244 /** 2245 * Get the progress for the current page. 2246 * @return The progress for the current page between 0 and 100. 2247 */ 2248 public int getProgress() { 2249 return mCallbackProxy.getProgress(); 2250 } 2251 2252 /** 2253 * @return the height of the HTML content. 2254 */ 2255 public int getContentHeight() { 2256 return mContentHeight; 2257 } 2258 2259 /** 2260 * @return the width of the HTML content. 2261 * @hide 2262 */ 2263 public int getContentWidth() { 2264 return mContentWidth; 2265 } 2266 2267 /** 2268 * Pause all layout, parsing, and javascript timers for all webviews. This 2269 * is a global requests, not restricted to just this webview. This can be 2270 * useful if the application has been paused. 2271 */ 2272 public void pauseTimers() { 2273 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2274 } 2275 2276 /** 2277 * Resume all layout, parsing, and javascript timers for all webviews. 2278 * This will resume dispatching all timers. 2279 */ 2280 public void resumeTimers() { 2281 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2282 } 2283 2284 /** 2285 * Call this to pause any extra processing associated with this view and 2286 * its associated DOM/plugins/javascript/etc. For example, if the view is 2287 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2288 * network traffic. When the view is again "active", call onResume(). 2289 * 2290 * Note that this differs from pauseTimers(), which affects all views/DOMs 2291 * @hide 2292 */ 2293 public void onPause() { 2294 if (!mIsPaused) { 2295 mIsPaused = true; 2296 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2297 } 2298 } 2299 2300 /** 2301 * Call this to balanace a previous call to onPause() 2302 * @hide 2303 */ 2304 public void onResume() { 2305 if (mIsPaused) { 2306 mIsPaused = false; 2307 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2308 } 2309 } 2310 2311 /** 2312 * Returns true if the view is paused, meaning onPause() was called. Calling 2313 * onResume() sets the paused state back to false. 2314 * @hide 2315 */ 2316 public boolean isPaused() { 2317 return mIsPaused; 2318 } 2319 2320 /** 2321 * Call this to inform the view that memory is low so that it can 2322 * free any available memory. 2323 */ 2324 public void freeMemory() { 2325 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2326 } 2327 2328 /** 2329 * Clear the resource cache. Note that the cache is per-application, so 2330 * this will clear the cache for all WebViews used. 2331 * 2332 * @param includeDiskFiles If false, only the RAM cache is cleared. 2333 */ 2334 public void clearCache(boolean includeDiskFiles) { 2335 // Note: this really needs to be a static method as it clears cache for all 2336 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2337 // we can't make this static. 2338 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2339 includeDiskFiles ? 1 : 0, 0); 2340 } 2341 2342 /** 2343 * Make sure that clearing the form data removes the adapter from the 2344 * currently focused textfield if there is one. 2345 */ 2346 public void clearFormData() { 2347 if (inEditingMode()) { 2348 AutoCompleteAdapter adapter = null; 2349 mWebTextView.setAdapterCustom(adapter); 2350 } 2351 } 2352 2353 /** 2354 * Tell the WebView to clear its internal back/forward list. 2355 */ 2356 public void clearHistory() { 2357 mCallbackProxy.getBackForwardList().setClearPending(); 2358 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2359 } 2360 2361 /** 2362 * Clear the SSL preferences table stored in response to proceeding with SSL 2363 * certificate errors. 2364 */ 2365 public void clearSslPreferences() { 2366 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2367 } 2368 2369 /** 2370 * Return the WebBackForwardList for this WebView. This contains the 2371 * back/forward list for use in querying each item in the history stack. 2372 * This is a copy of the private WebBackForwardList so it contains only a 2373 * snapshot of the current state. Multiple calls to this method may return 2374 * different objects. The object returned from this method will not be 2375 * updated to reflect any new state. 2376 */ 2377 public WebBackForwardList copyBackForwardList() { 2378 return mCallbackProxy.getBackForwardList().clone(); 2379 } 2380 2381 /* 2382 * Highlight and scroll to the next occurance of String in findAll. 2383 * Wraps the page infinitely, and scrolls. Must be called after 2384 * calling findAll. 2385 * 2386 * @param forward Direction to search. 2387 */ 2388 public void findNext(boolean forward) { 2389 if (0 == mNativeClass) return; // client isn't initialized 2390 nativeFindNext(forward); 2391 } 2392 2393 /* 2394 * Find all instances of find on the page and highlight them. 2395 * @param find String to find. 2396 * @return int The number of occurances of the String "find" 2397 * that were found. 2398 */ 2399 public int findAll(String find) { 2400 if (0 == mNativeClass) return 0; // client isn't initialized 2401 if (mFindIsUp == false) { 2402 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2403 false); 2404 mFindIsUp = true; 2405 } 2406 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2407 invalidate(); 2408 return result; 2409 } 2410 2411 // Used to know whether the find dialog is open. Affects whether 2412 // or not we draw the highlights for matches. 2413 private boolean mFindIsUp; 2414 private int mFindHeight; 2415 2416 /** 2417 * Return the first substring consisting of the address of a physical 2418 * location. Currently, only addresses in the United States are detected, 2419 * and consist of: 2420 * - a house number 2421 * - a street name 2422 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2423 * - a city name 2424 * - a state or territory, either spelled out or two-letter abbr. 2425 * - an optional 5 digit or 9 digit zip code. 2426 * 2427 * All names must be correctly capitalized, and the zip code, if present, 2428 * must be valid for the state. The street type must be a standard USPS 2429 * spelling or abbreviation. The state or territory must also be spelled 2430 * or abbreviated using USPS standards. The house number may not exceed 2431 * five digits. 2432 * @param addr The string to search for addresses. 2433 * 2434 * @return the address, or if no address is found, return null. 2435 */ 2436 public static String findAddress(String addr) { 2437 return findAddress(addr, false); 2438 } 2439 2440 /** 2441 * @hide 2442 * Return the first substring consisting of the address of a physical 2443 * location. Currently, only addresses in the United States are detected, 2444 * and consist of: 2445 * - a house number 2446 * - a street name 2447 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2448 * - a city name 2449 * - a state or territory, either spelled out or two-letter abbr. 2450 * - an optional 5 digit or 9 digit zip code. 2451 * 2452 * Names are optionally capitalized, and the zip code, if present, 2453 * must be valid for the state. The street type must be a standard USPS 2454 * spelling or abbreviation. The state or territory must also be spelled 2455 * or abbreviated using USPS standards. The house number may not exceed 2456 * five digits. 2457 * @param addr The string to search for addresses. 2458 * @param caseInsensitive addr Set to true to make search ignore case. 2459 * 2460 * @return the address, or if no address is found, return null. 2461 */ 2462 public static String findAddress(String addr, boolean caseInsensitive) { 2463 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2464 } 2465 2466 /* 2467 * Clear the highlighting surrounding text matches created by findAll. 2468 */ 2469 public void clearMatches() { 2470 if (mFindIsUp) { 2471 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2472 false); 2473 mFindIsUp = false; 2474 } 2475 nativeSetFindIsDown(); 2476 // Now that the dialog has been removed, ensure that we scroll to a 2477 // location that is not beyond the end of the page. 2478 pinScrollTo(mScrollX, mScrollY, false, 0); 2479 invalidate(); 2480 } 2481 2482 /** 2483 * @hide 2484 */ 2485 public void setFindDialogHeight(int height) { 2486 if (DebugFlags.WEB_VIEW) { 2487 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2488 } 2489 mFindHeight = height; 2490 } 2491 2492 /** 2493 * Query the document to see if it contains any image references. The 2494 * message object will be dispatched with arg1 being set to 1 if images 2495 * were found and 0 if the document does not reference any images. 2496 * @param response The message that will be dispatched with the result. 2497 */ 2498 public void documentHasImages(Message response) { 2499 if (response == null) { 2500 return; 2501 } 2502 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2503 } 2504 2505 @Override 2506 public void computeScroll() { 2507 if (mScroller.computeScrollOffset()) { 2508 int oldX = mScrollX; 2509 int oldY = mScrollY; 2510 mScrollX = mScroller.getCurrX(); 2511 mScrollY = mScroller.getCurrY(); 2512 postInvalidate(); // So we draw again 2513 if (oldX != mScrollX || oldY != mScrollY) { 2514 // as onScrollChanged() is not called, sendOurVisibleRect() 2515 // needs to be call explicitly 2516 sendOurVisibleRect(); 2517 } 2518 } else { 2519 super.computeScroll(); 2520 } 2521 } 2522 2523 private static int computeDuration(int dx, int dy) { 2524 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2525 int duration = distance * 1000 / STD_SPEED; 2526 return Math.min(duration, MAX_DURATION); 2527 } 2528 2529 // helper to pin the scrollBy parameters (already in view coordinates) 2530 // returns true if the scroll was changed 2531 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2532 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2533 } 2534 // helper to pin the scrollTo parameters (already in view coordinates) 2535 // returns true if the scroll was changed 2536 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2537 x = pinLocX(x); 2538 y = pinLocY(y); 2539 int dx = x - mScrollX; 2540 int dy = y - mScrollY; 2541 2542 if ((dx | dy) == 0) { 2543 return false; 2544 } 2545 if (animate) { 2546 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2547 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2548 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2549 awakenScrollBars(mScroller.getDuration()); 2550 invalidate(); 2551 } else { 2552 abortAnimation(); // just in case 2553 scrollTo(x, y); 2554 } 2555 return true; 2556 } 2557 2558 // Scale from content to view coordinates, and pin. 2559 // Also called by jni webview.cpp 2560 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2561 if (mDrawHistory) { 2562 // disallow WebView to change the scroll position as History Picture 2563 // is used in the view system. 2564 // TODO: as we switchOutDrawHistory when trackball or navigation 2565 // keys are hit, this should be safe. Right? 2566 return false; 2567 } 2568 cx = contentToViewDimension(cx); 2569 cy = contentToViewDimension(cy); 2570 if (mHeightCanMeasure) { 2571 // move our visible rect according to scroll request 2572 if (cy != 0) { 2573 Rect tempRect = new Rect(); 2574 calcOurVisibleRect(tempRect); 2575 tempRect.offset(cx, cy); 2576 requestRectangleOnScreen(tempRect); 2577 } 2578 // FIXME: We scroll horizontally no matter what because currently 2579 // ScrollView and ListView will not scroll horizontally. 2580 // FIXME: Why do we only scroll horizontally if there is no 2581 // vertical scroll? 2582// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2583 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2584 } else { 2585 return pinScrollBy(cx, cy, animate, 0); 2586 } 2587 } 2588 2589 // scale from content to view coordinates, and pin 2590 // return true if pin caused the final x/y different than the request cx/cy, 2591 // and a future scroll may reach the request cx/cy after our size has 2592 // changed 2593 // return false if the view scroll to the exact position as it is requested, 2594 // where negative numbers are taken to mean 0 2595 private boolean setContentScrollTo(int cx, int cy) { 2596 if (mDrawHistory) { 2597 // disallow WebView to change the scroll position as History Picture 2598 // is used in the view system. 2599 // One known case where this is called is that WebCore tries to 2600 // restore the scroll position. As history Picture already uses the 2601 // saved scroll position, it is ok to skip this. 2602 return false; 2603 } 2604 int vx; 2605 int vy; 2606 if ((cx | cy) == 0) { 2607 // If the page is being scrolled to (0,0), do not add in the title 2608 // bar's height, and simply scroll to (0,0). (The only other work 2609 // in contentToView_ is to multiply, so this would not change 0.) 2610 vx = 0; 2611 vy = 0; 2612 } else { 2613 vx = contentToViewX(cx); 2614 vy = contentToViewY(cy); 2615 } 2616// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2617// vx + " " + vy + "]"); 2618 // Some mobile sites attempt to scroll the title bar off the page by 2619 // scrolling to (0,1). If we are at the top left corner of the 2620 // page, assume this is an attempt to scroll off the title bar, and 2621 // animate the title bar off screen slowly enough that the user can see 2622 // it. 2623 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0) { 2624 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2625 // Since we are animating, we have not yet reached the desired 2626 // scroll position. Do not return true to request another attempt 2627 return false; 2628 } 2629 pinScrollTo(vx, vy, false, 0); 2630 // If the request was to scroll to a negative coordinate, treat it as if 2631 // it was a request to scroll to 0 2632 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2633 return true; 2634 } else { 2635 return false; 2636 } 2637 } 2638 2639 // scale from content to view coordinates, and pin 2640 private void spawnContentScrollTo(int cx, int cy) { 2641 if (mDrawHistory) { 2642 // disallow WebView to change the scroll position as History Picture 2643 // is used in the view system. 2644 return; 2645 } 2646 int vx = contentToViewX(cx); 2647 int vy = contentToViewY(cy); 2648 pinScrollTo(vx, vy, true, 0); 2649 } 2650 2651 /** 2652 * These are from webkit, and are in content coordinate system (unzoomed) 2653 */ 2654 private void contentSizeChanged(boolean updateLayout) { 2655 // suppress 0,0 since we usually see real dimensions soon after 2656 // this avoids drawing the prev content in a funny place. If we find a 2657 // way to consolidate these notifications, this check may become 2658 // obsolete 2659 if ((mContentWidth | mContentHeight) == 0) { 2660 return; 2661 } 2662 2663 if (mHeightCanMeasure) { 2664 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2665 && updateLayout) { 2666 requestLayout(); 2667 } 2668 } else if (mWidthCanMeasure) { 2669 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2670 && updateLayout) { 2671 requestLayout(); 2672 } 2673 } else { 2674 // If we don't request a layout, try to send our view size to the 2675 // native side to ensure that WebCore has the correct dimensions. 2676 sendViewSizeZoom(); 2677 } 2678 } 2679 2680 /** 2681 * Set the WebViewClient that will receive various notifications and 2682 * requests. This will replace the current handler. 2683 * @param client An implementation of WebViewClient. 2684 */ 2685 public void setWebViewClient(WebViewClient client) { 2686 mCallbackProxy.setWebViewClient(client); 2687 } 2688 2689 /** 2690 * Register the interface to be used when content can not be handled by 2691 * the rendering engine, and should be downloaded instead. This will replace 2692 * the current handler. 2693 * @param listener An implementation of DownloadListener. 2694 */ 2695 public void setDownloadListener(DownloadListener listener) { 2696 mCallbackProxy.setDownloadListener(listener); 2697 } 2698 2699 /** 2700 * Set the chrome handler. This is an implementation of WebChromeClient for 2701 * use in handling Javascript dialogs, favicons, titles, and the progress. 2702 * This will replace the current handler. 2703 * @param client An implementation of WebChromeClient. 2704 */ 2705 public void setWebChromeClient(WebChromeClient client) { 2706 mCallbackProxy.setWebChromeClient(client); 2707 } 2708 2709 /** 2710 * Gets the chrome handler. 2711 * @return the current WebChromeClient instance. 2712 * 2713 * @hide API council approval. 2714 */ 2715 public WebChromeClient getWebChromeClient() { 2716 return mCallbackProxy.getWebChromeClient(); 2717 } 2718 2719 /** 2720 * Set the Picture listener. This is an interface used to receive 2721 * notifications of a new Picture. 2722 * @param listener An implementation of WebView.PictureListener. 2723 */ 2724 public void setPictureListener(PictureListener listener) { 2725 mPictureListener = listener; 2726 } 2727 2728 /** 2729 * {@hide} 2730 */ 2731 /* FIXME: Debug only! Remove for SDK! */ 2732 public void externalRepresentation(Message callback) { 2733 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2734 } 2735 2736 /** 2737 * {@hide} 2738 */ 2739 /* FIXME: Debug only! Remove for SDK! */ 2740 public void documentAsText(Message callback) { 2741 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2742 } 2743 2744 /** 2745 * Use this function to bind an object to Javascript so that the 2746 * methods can be accessed from Javascript. 2747 * <p><strong>IMPORTANT:</strong> 2748 * <ul> 2749 * <li> Using addJavascriptInterface() allows JavaScript to control your 2750 * application. This can be a very useful feature or a dangerous security 2751 * issue. When the HTML in the WebView is untrustworthy (for example, part 2752 * or all of the HTML is provided by some person or process), then an 2753 * attacker could inject HTML that will execute your code and possibly any 2754 * code of the attacker's choosing.<br> 2755 * Do not use addJavascriptInterface() unless all of the HTML in this 2756 * WebView was written by you.</li> 2757 * <li> The Java object that is bound runs in another thread and not in 2758 * the thread that it was constructed in.</li> 2759 * </ul></p> 2760 * @param obj The class instance to bind to Javascript 2761 * @param interfaceName The name to used to expose the class in Javascript 2762 */ 2763 public void addJavascriptInterface(Object obj, String interfaceName) { 2764 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2765 arg.mObject = obj; 2766 arg.mInterfaceName = interfaceName; 2767 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2768 } 2769 2770 /** 2771 * Return the WebSettings object used to control the settings for this 2772 * WebView. 2773 * @return A WebSettings object that can be used to control this WebView's 2774 * settings. 2775 */ 2776 public WebSettings getSettings() { 2777 return mWebViewCore.getSettings(); 2778 } 2779 2780 /** 2781 * Return the list of currently loaded plugins. 2782 * @return The list of currently loaded plugins. 2783 * 2784 * @deprecated This was used for Gears, which has been deprecated. 2785 */ 2786 @Deprecated 2787 public static synchronized PluginList getPluginList() { 2788 return new PluginList(); 2789 } 2790 2791 /** 2792 * @deprecated This was used for Gears, which has been deprecated. 2793 */ 2794 @Deprecated 2795 public void refreshPlugins(boolean reloadOpenPages) { } 2796 2797 //------------------------------------------------------------------------- 2798 // Override View methods 2799 //------------------------------------------------------------------------- 2800 2801 @Override 2802 protected void finalize() throws Throwable { 2803 try { 2804 destroy(); 2805 } finally { 2806 super.finalize(); 2807 } 2808 } 2809 2810 @Override 2811 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 2812 if (child == mTitleBar) { 2813 // When drawing the title bar, move it horizontally to always show 2814 // at the top of the WebView. 2815 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 2816 } 2817 return super.drawChild(canvas, child, drawingTime); 2818 } 2819 2820 private void drawContent(Canvas canvas) { 2821 // Update the buttons in the picture, so when we draw the picture 2822 // to the screen, they are in the correct state. 2823 // Tell the native side if user is a) touching the screen, 2824 // b) pressing the trackball down, or c) pressing the enter key 2825 // If the cursor is on a button, we need to draw it in the pressed 2826 // state. 2827 // If mNativeClass is 0, we should not reach here, so we do not 2828 // need to check it again. 2829 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2830 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2831 || mTrackballDown || mGotCenterDown, false); 2832 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2833 } 2834 2835 @Override 2836 protected void onDraw(Canvas canvas) { 2837 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2838 if (mNativeClass == 0) { 2839 return; 2840 } 2841 int saveCount = canvas.save(); 2842 if (mTitleBar != null) { 2843 canvas.translate(0, (int) mTitleBar.getHeight()); 2844 } 2845 if (mDragTrackerHandler == null || !mDragTrackerHandler.draw(canvas)) { 2846 drawContent(canvas); 2847 } 2848 canvas.restoreToCount(saveCount); 2849 2850 // Now draw the shadow. 2851 if (mTitleBar != null) { 2852 int y = mScrollY + getVisibleTitleHeight(); 2853 int height = (int) (5f * getContext().getResources() 2854 .getDisplayMetrics().density); 2855 mTitleShadow.setBounds(mScrollX, y, mScrollX + getWidth(), 2856 y + height); 2857 mTitleShadow.draw(canvas); 2858 } 2859 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2860 invalidate(); 2861 } 2862 } 2863 2864 @Override 2865 public void setLayoutParams(ViewGroup.LayoutParams params) { 2866 if (params.height == LayoutParams.WRAP_CONTENT) { 2867 mWrapContent = true; 2868 } 2869 super.setLayoutParams(params); 2870 } 2871 2872 @Override 2873 public boolean performLongClick() { 2874 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 2875 // Send the click so that the textfield is in focus 2876 // FIXME: When we start respecting changes to the native textfield's 2877 // selection, need to make sure that this does not change it. 2878 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 2879 nativeCursorNodePointer()); 2880 rebuildWebTextView(); 2881 } 2882 if (inEditingMode()) { 2883 return mWebTextView.performLongClick(); 2884 } else { 2885 return super.performLongClick(); 2886 } 2887 } 2888 2889 boolean inAnimateZoom() { 2890 return mZoomScale != 0; 2891 } 2892 2893 /** 2894 * Need to adjust the WebTextView after a change in zoom, since mActualScale 2895 * has changed. This is especially important for password fields, which are 2896 * drawn by the WebTextView, since it conveys more information than what 2897 * webkit draws. Thus we need to reposition it to show in the correct 2898 * place. 2899 */ 2900 private boolean mNeedToAdjustWebTextView; 2901 2902 // if checkVisibility is false, the WebTextView may trigger a move of 2903 // WebView to bring itself into the view. 2904 private void adjustTextView(boolean checkVisibility) { 2905 Rect contentBounds = nativeFocusCandidateNodeBounds(); 2906 Rect vBox = contentToViewRect(contentBounds); 2907 Rect visibleRect = new Rect(); 2908 calcOurVisibleRect(visibleRect); 2909 if (!checkVisibility || visibleRect.contains(vBox)) { 2910 // As a result of the zoom, the textfield is now on 2911 // screen. Place the WebTextView in its new place, 2912 // accounting for our new scroll/zoom values. 2913 mWebTextView 2914 .setTextSize( 2915 TypedValue.COMPLEX_UNIT_PX, 2916 contentToViewDimension(nativeFocusCandidateTextSize())); 2917 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 2918 vBox.height()); 2919 // If it is a password field, start drawing the 2920 // WebTextView once again. 2921 if (nativeFocusCandidateIsPassword()) { 2922 mWebTextView.setInPassword(true); 2923 } 2924 } else { 2925 // The textfield is now off screen. The user probably 2926 // was not zooming to see the textfield better. Remove 2927 // the WebTextView. If the user types a key, and the 2928 // textfield is still in focus, we will reconstruct 2929 // the WebTextView and scroll it back on screen. 2930 mWebTextView.remove(); 2931 } 2932 } 2933 2934 private void drawCoreAndCursorRing(Canvas canvas, int color, 2935 boolean drawCursorRing) { 2936 if (mDrawHistory) { 2937 canvas.scale(mActualScale, mActualScale); 2938 canvas.drawPicture(mHistoryPicture); 2939 return; 2940 } 2941 2942 boolean animateZoom = mZoomScale != 0; 2943 boolean animateScroll = !mScroller.isFinished() 2944 || mVelocityTracker != null; 2945 if (animateZoom) { 2946 float zoomScale; 2947 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 2948 if (interval < ZOOM_ANIMATION_LENGTH) { 2949 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 2950 zoomScale = 1.0f / (mInvInitialZoomScale 2951 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 2952 invalidate(); 2953 } else { 2954 zoomScale = mZoomScale; 2955 // set mZoomScale to be 0 as we have done animation 2956 mZoomScale = 0; 2957 // call invalidate() again to draw with the final filters 2958 invalidate(); 2959 if (mNeedToAdjustWebTextView) { 2960 mNeedToAdjustWebTextView = false; 2961 adjustTextView(true); 2962 } 2963 } 2964 // calculate the intermediate scroll position. As we need to use 2965 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 2966 float scale = zoomScale * mInvInitialZoomScale; 2967 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 2968 - mZoomCenterX); 2969 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 2970 * zoomScale)) + mScrollX; 2971 int titleHeight = getTitleHeight(); 2972 int ty = Math.round(scale 2973 * (mInitialScrollY + mZoomCenterY - titleHeight) 2974 - (mZoomCenterY - titleHeight)); 2975 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 2976 - titleHeight, getViewHeight(), Math.round(mContentHeight 2977 * zoomScale)) + titleHeight) + mScrollY; 2978 canvas.translate(tx, ty); 2979 canvas.scale(zoomScale, zoomScale); 2980 if (inEditingMode() && !mNeedToAdjustWebTextView 2981 && mZoomScale != 0) { 2982 // The WebTextView is up. Keep track of this so we can adjust 2983 // its size and placement when we finish zooming 2984 mNeedToAdjustWebTextView = true; 2985 // If it is in password mode, turn it off so it does not draw 2986 // misplaced. 2987 if (nativeFocusCandidateIsPassword()) { 2988 mWebTextView.setInPassword(false); 2989 } 2990 } 2991 } else { 2992 canvas.scale(mActualScale, mActualScale); 2993 } 2994 2995 mWebViewCore.drawContentPicture(canvas, color, 2996 (animateZoom || mPreviewZoomOnly), animateScroll); 2997 2998 if (mNativeClass == 0) return; 2999 if (mShiftIsPressed && !(animateZoom || mPreviewZoomOnly)) { 3000 if (mTouchSelection) { 3001 nativeDrawSelectionRegion(canvas); 3002 } else { 3003 nativeDrawSelection(canvas, mInvActualScale, getTitleHeight(), 3004 mSelectX, mSelectY, mExtendSelection); 3005 } 3006 } else if (drawCursorRing) { 3007 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3008 mTouchMode = TOUCH_SHORTPRESS_MODE; 3009 HitTestResult hitTest = getHitTestResult(); 3010 if (hitTest != null && 3011 hitTest.mType != HitTestResult.UNKNOWN_TYPE) { 3012 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3013 .obtainMessage(SWITCH_TO_LONGPRESS), 3014 LONG_PRESS_TIMEOUT); 3015 } 3016 } 3017 nativeDrawCursorRing(canvas); 3018 } 3019 // When the FindDialog is up, only draw the matches if we are not in 3020 // the process of scrolling them into view. 3021 if (mFindIsUp && !animateScroll) { 3022 nativeDrawMatches(canvas); 3023 } 3024 } 3025 3026 // draw history 3027 private boolean mDrawHistory = false; 3028 private Picture mHistoryPicture = null; 3029 private int mHistoryWidth = 0; 3030 private int mHistoryHeight = 0; 3031 3032 // Only check the flag, can be called from WebCore thread 3033 boolean drawHistory() { 3034 return mDrawHistory; 3035 } 3036 3037 // Should only be called in UI thread 3038 void switchOutDrawHistory() { 3039 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3040 if (mDrawHistory && mWebViewCore.pictureReady()) { 3041 mDrawHistory = false; 3042 invalidate(); 3043 int oldScrollX = mScrollX; 3044 int oldScrollY = mScrollY; 3045 mScrollX = pinLocX(mScrollX); 3046 mScrollY = pinLocY(mScrollY); 3047 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3048 mUserScroll = false; 3049 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3050 oldScrollY); 3051 } 3052 sendOurVisibleRect(); 3053 } 3054 } 3055 3056 WebViewCore.CursorData cursorData() { 3057 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3058 result.mMoveGeneration = nativeMoveGeneration(); 3059 result.mFrame = nativeCursorFramePointer(); 3060 Point position = nativeCursorPosition(); 3061 result.mX = position.x; 3062 result.mY = position.y; 3063 return result; 3064 } 3065 3066 /** 3067 * Delete text from start to end in the focused textfield. If there is no 3068 * focus, or if start == end, silently fail. If start and end are out of 3069 * order, swap them. 3070 * @param start Beginning of selection to delete. 3071 * @param end End of selection to delete. 3072 */ 3073 /* package */ void deleteSelection(int start, int end) { 3074 mTextGeneration++; 3075 WebViewCore.TextSelectionData data 3076 = new WebViewCore.TextSelectionData(start, end); 3077 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3078 data); 3079 } 3080 3081 /** 3082 * Set the selection to (start, end) in the focused textfield. If start and 3083 * end are out of order, swap them. 3084 * @param start Beginning of selection. 3085 * @param end End of selection. 3086 */ 3087 /* package */ void setSelection(int start, int end) { 3088 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3089 } 3090 3091 // Called by JNI when a touch event puts a textfield into focus. 3092 private void displaySoftKeyboard(boolean isTextView) { 3093 InputMethodManager imm = (InputMethodManager) 3094 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3095 3096 if (isTextView) { 3097 if (mWebTextView == null) return; 3098 3099 imm.showSoftInput(mWebTextView, 0); 3100 if (mActualScale < mDefaultScale) { 3101 // bring it back to the default scale so that user can enter 3102 // text. 3103 mInZoomOverview = false; 3104 mZoomCenterX = mLastTouchX; 3105 mZoomCenterY = mLastTouchY; 3106 // do not change text wrap scale so that there is no reflow 3107 setNewZoomScale(mDefaultScale, false, false); 3108 adjustTextView(false); 3109 } 3110 } 3111 else { // used by plugins 3112 imm.showSoftInput(this, 0); 3113 } 3114 } 3115 3116 // Called by WebKit to instruct the UI to hide the keyboard 3117 private void hideSoftKeyboard() { 3118 InputMethodManager imm = (InputMethodManager) 3119 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3120 3121 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3122 } 3123 3124 /* 3125 * This method checks the current focus and cursor and potentially rebuilds 3126 * mWebTextView to have the appropriate properties, such as password, 3127 * multiline, and what text it contains. It also removes it if necessary. 3128 */ 3129 /* package */ void rebuildWebTextView() { 3130 // If the WebView does not have focus, do nothing until it gains focus. 3131 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3132 return; 3133 } 3134 boolean alreadyThere = inEditingMode(); 3135 // inEditingMode can only return true if mWebTextView is non-null, 3136 // so we can safely call remove() if (alreadyThere) 3137 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3138 if (alreadyThere) { 3139 mWebTextView.remove(); 3140 } 3141 return; 3142 } 3143 // At this point, we know we have found an input field, so go ahead 3144 // and create the WebTextView if necessary. 3145 if (mWebTextView == null) { 3146 mWebTextView = new WebTextView(mContext, WebView.this); 3147 // Initialize our generation number. 3148 mTextGeneration = 0; 3149 } 3150 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3151 contentToViewDimension(nativeFocusCandidateTextSize())); 3152 Rect visibleRect = new Rect(); 3153 calcOurContentVisibleRect(visibleRect); 3154 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3155 // should be in content coordinates. 3156 Rect bounds = nativeFocusCandidateNodeBounds(); 3157 if (!Rect.intersects(bounds, visibleRect)) { 3158 mWebTextView.bringIntoView(); 3159 } 3160 String text = nativeFocusCandidateText(); 3161 int nodePointer = nativeFocusCandidatePointer(); 3162 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3163 // It is possible that we have the same textfield, but it has moved, 3164 // i.e. In the case of opening/closing the screen. 3165 // In that case, we need to set the dimensions, but not the other 3166 // aspects. 3167 // We also need to restore the selection, which gets wrecked by 3168 // calling setTextEntryRect. 3169 Spannable spannable = (Spannable) mWebTextView.getText(); 3170 int start = Selection.getSelectionStart(spannable); 3171 int end = Selection.getSelectionEnd(spannable); 3172 // If the text has been changed by webkit, update it. However, if 3173 // there has been more UI text input, ignore it. We will receive 3174 // another update when that text is recognized. 3175 if (text != null && !text.equals(spannable.toString()) 3176 && nativeTextGeneration() == mTextGeneration) { 3177 mWebTextView.setTextAndKeepSelection(text); 3178 } else { 3179 Selection.setSelection(spannable, start, end); 3180 } 3181 } else { 3182 Rect vBox = contentToViewRect(bounds); 3183 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3184 vBox.height()); 3185 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3186 Gravity.RIGHT : Gravity.NO_GRAVITY); 3187 // this needs to be called before update adapter thread starts to 3188 // ensure the mWebTextView has the same node pointer 3189 mWebTextView.setNodePointer(nodePointer); 3190 int maxLength = -1; 3191 boolean isTextField = nativeFocusCandidateIsTextField(); 3192 if (isTextField) { 3193 maxLength = nativeFocusCandidateMaxLength(); 3194 String name = nativeFocusCandidateName(); 3195 if (mWebViewCore.getSettings().getSaveFormData() 3196 && name != null) { 3197 Message update = mPrivateHandler.obtainMessage( 3198 REQUEST_FORM_DATA, nodePointer); 3199 RequestFormData updater = new RequestFormData(name, 3200 getUrl(), update); 3201 Thread t = new Thread(updater); 3202 t.start(); 3203 } 3204 } 3205 mWebTextView.setMaxLength(maxLength); 3206 AutoCompleteAdapter adapter = null; 3207 mWebTextView.setAdapterCustom(adapter); 3208 mWebTextView.setSingleLine(isTextField); 3209 mWebTextView.setInPassword(nativeFocusCandidateIsPassword()); 3210 if (null == text) { 3211 mWebTextView.setText("", 0, 0); 3212 if (DebugFlags.WEB_VIEW) { 3213 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3214 } 3215 } else { 3216 // Change to true to enable the old style behavior, where 3217 // entering a textfield/textarea always set the selection to the 3218 // whole field. This was desirable for the case where the user 3219 // intends to scroll past the field using the trackball. 3220 // However, it causes a problem when replying to emails - the 3221 // user expects the cursor to be at the beginning of the 3222 // textarea. Testing out a new behavior, where textfields set 3223 // selection at the end, and textareas at the beginning. 3224 if (false) { 3225 mWebTextView.setText(text, 0, text.length()); 3226 } else if (isTextField) { 3227 int length = text.length(); 3228 mWebTextView.setText(text, length, length); 3229 if (DebugFlags.WEB_VIEW) { 3230 Log.v(LOGTAG, "rebuildWebTextView length=" + length); 3231 } 3232 } else { 3233 mWebTextView.setText(text, 0, 0); 3234 if (DebugFlags.WEB_VIEW) { 3235 Log.v(LOGTAG, "rebuildWebTextView !isTextField"); 3236 } 3237 } 3238 } 3239 mWebTextView.requestFocus(); 3240 } 3241 } 3242 3243 /* 3244 * This class requests an Adapter for the WebTextView which shows past 3245 * entries stored in the database. It is a Runnable so that it can be done 3246 * in its own thread, without slowing down the UI. 3247 */ 3248 private class RequestFormData implements Runnable { 3249 private String mName; 3250 private String mUrl; 3251 private Message mUpdateMessage; 3252 3253 public RequestFormData(String name, String url, Message msg) { 3254 mName = name; 3255 mUrl = url; 3256 mUpdateMessage = msg; 3257 } 3258 3259 public void run() { 3260 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3261 if (pastEntries.size() > 0) { 3262 AutoCompleteAdapter adapter = new 3263 AutoCompleteAdapter(mContext, pastEntries); 3264 mUpdateMessage.obj = adapter; 3265 mUpdateMessage.sendToTarget(); 3266 } 3267 } 3268 } 3269 3270 // This is used to determine long press with the center key. Does not 3271 // affect long press with the trackball/touch. 3272 private boolean mGotCenterDown = false; 3273 3274 @Override 3275 public boolean onKeyDown(int keyCode, KeyEvent event) { 3276 if (DebugFlags.WEB_VIEW) { 3277 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3278 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3279 } 3280 3281 if (mNativeClass == 0) { 3282 return false; 3283 } 3284 3285 // do this hack up front, so it always works, regardless of touch-mode 3286 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3287 mAutoRedraw = !mAutoRedraw; 3288 if (mAutoRedraw) { 3289 invalidate(); 3290 } 3291 return true; 3292 } 3293 3294 // Bubble up the key event if 3295 // 1. it is a system key; or 3296 // 2. the host application wants to handle it; 3297 if (event.isSystem() 3298 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3299 return false; 3300 } 3301 3302 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3303 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3304 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3305 mExtendSelection = false; 3306 mShiftIsPressed = true; 3307 if (nativeHasCursorNode()) { 3308 Rect rect = nativeCursorNodeBounds(); 3309 mSelectX = contentToViewX(rect.left); 3310 mSelectY = contentToViewY(rect.top); 3311 } else { 3312 mSelectX = mScrollX + (int) mLastTouchX; 3313 mSelectY = mScrollY + (int) mLastTouchY; 3314 } 3315 nativeHideCursor(); 3316 } 3317 3318 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 3319 pageUp(false); 3320 return true; 3321 } 3322 3323 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 3324 pageDown(false); 3325 return true; 3326 } 3327 3328 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3329 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3330 // always handle the navigation keys in the UI thread 3331 switchOutDrawHistory(); 3332 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3333 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3334 return true; 3335 } 3336 // Bubble up the key event as WebView doesn't handle it 3337 return false; 3338 } 3339 3340 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3341 switchOutDrawHistory(); 3342 if (event.getRepeatCount() == 0) { 3343 mGotCenterDown = true; 3344 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3345 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3346 // Already checked mNativeClass, so we do not need to check it 3347 // again. 3348 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3349 return true; 3350 } 3351 // Bubble up the key event as WebView doesn't handle it 3352 return false; 3353 } 3354 3355 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3356 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3357 // turn off copy select if a shift-key combo is pressed 3358 mExtendSelection = mShiftIsPressed = false; 3359 if (mTouchMode == TOUCH_SELECT_MODE) { 3360 mTouchMode = TOUCH_INIT_MODE; 3361 } 3362 } 3363 3364 if (getSettings().getNavDump()) { 3365 switch (keyCode) { 3366 case KeyEvent.KEYCODE_4: 3367 // "/data/data/com.android.browser/displayTree.txt" 3368 nativeDumpDisplayTree(getUrl()); 3369 break; 3370 case KeyEvent.KEYCODE_5: 3371 case KeyEvent.KEYCODE_6: 3372 // 5: dump the dom tree to the file 3373 // "/data/data/com.android.browser/domTree.txt" 3374 // 6: dump the dom tree to the adb log 3375 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, 3376 (keyCode == KeyEvent.KEYCODE_5) ? 1 : 0, 0); 3377 break; 3378 case KeyEvent.KEYCODE_7: 3379 case KeyEvent.KEYCODE_8: 3380 // 7: dump the render tree to the file 3381 // "/data/data/com.android.browser/renderTree.txt" 3382 // 8: dump the render tree to the adb log 3383 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, 3384 (keyCode == KeyEvent.KEYCODE_7) ? 1 : 0, 0); 3385 break; 3386 case KeyEvent.KEYCODE_9: 3387 nativeInstrumentReport(); 3388 return true; 3389 } 3390 } 3391 3392 if (nativeCursorIsPlugin()) { 3393 nativeUpdatePluginReceivesEvents(); 3394 invalidate(); 3395 } else if (nativeCursorIsTextInput()) { 3396 // This message will put the node in focus, for the DOM's notion 3397 // of focus, and make the focuscontroller active 3398 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3399 nativeCursorNodePointer()); 3400 // This will bring up the WebTextView and put it in focus, for 3401 // our view system's notion of focus 3402 rebuildWebTextView(); 3403 // Now we need to pass the event to it 3404 return mWebTextView.onKeyDown(keyCode, event); 3405 } else if (nativeHasFocusNode()) { 3406 // In this case, the cursor is not on a text input, but the focus 3407 // might be. Check it, and if so, hand over to the WebTextView. 3408 rebuildWebTextView(); 3409 if (inEditingMode()) { 3410 return mWebTextView.onKeyDown(keyCode, event); 3411 } 3412 } 3413 3414 // TODO: should we pass all the keys to DOM or check the meta tag 3415 if (nativeCursorWantsKeyEvents() || true) { 3416 // pass the key to DOM 3417 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3418 // return true as DOM handles the key 3419 return true; 3420 } 3421 3422 // Bubble up the key event as WebView doesn't handle it 3423 return false; 3424 } 3425 3426 @Override 3427 public boolean onKeyUp(int keyCode, KeyEvent event) { 3428 if (DebugFlags.WEB_VIEW) { 3429 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3430 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3431 } 3432 3433 if (mNativeClass == 0) { 3434 return false; 3435 } 3436 3437 // special CALL handling when cursor node's href is "tel:XXX" 3438 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3439 String text = nativeCursorText(); 3440 if (!nativeCursorIsTextInput() && text != null 3441 && text.startsWith(SCHEME_TEL)) { 3442 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3443 getContext().startActivity(intent); 3444 return true; 3445 } 3446 } 3447 3448 // Bubble up the key event if 3449 // 1. it is a system key; or 3450 // 2. the host application wants to handle it; 3451 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3452 return false; 3453 } 3454 3455 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3456 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3457 if (commitCopy()) { 3458 return true; 3459 } 3460 } 3461 3462 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3463 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3464 // always handle the navigation keys in the UI thread 3465 // Bubble up the key event as WebView doesn't handle it 3466 return false; 3467 } 3468 3469 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3470 // remove the long press message first 3471 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3472 mGotCenterDown = false; 3473 3474 if (mShiftIsPressed) { 3475 return false; 3476 } 3477 3478 // perform the single click 3479 Rect visibleRect = sendOurVisibleRect(); 3480 // Note that sendOurVisibleRect calls viewToContent, so the 3481 // coordinates should be in content coordinates. 3482 if (!nativeCursorIntersects(visibleRect)) { 3483 return false; 3484 } 3485 nativeSetFollowedLink(true); 3486 nativeUpdatePluginReceivesEvents(); 3487 WebViewCore.CursorData data = cursorData(); 3488 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3489 playSoundEffect(SoundEffectConstants.CLICK); 3490 boolean isTextInput = nativeCursorIsTextInput(); 3491 if (isTextInput || !mCallbackProxy.uiOverrideUrlLoading( 3492 nativeCursorText())) { 3493 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3494 nativeCursorNodePointer()); 3495 } 3496 if (isTextInput) { 3497 rebuildWebTextView(); 3498 displaySoftKeyboard(true); 3499 } 3500 return true; 3501 } 3502 3503 // TODO: should we pass all the keys to DOM or check the meta tag 3504 if (nativeCursorWantsKeyEvents() || true) { 3505 // pass the key to DOM 3506 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3507 // return true as DOM handles the key 3508 return true; 3509 } 3510 3511 // Bubble up the key event as WebView doesn't handle it 3512 return false; 3513 } 3514 3515 /** 3516 * @hide 3517 */ 3518 public void emulateShiftHeld() { 3519 if (0 == mNativeClass) return; // client isn't initialized 3520 mExtendSelection = false; 3521 mShiftIsPressed = true; 3522 nativeHideCursor(); 3523 } 3524 3525 private boolean commitCopy() { 3526 boolean copiedSomething = false; 3527 if (mExtendSelection) { 3528 // copy region so core operates on copy without touching orig. 3529 Region selection = new Region(nativeGetSelection()); 3530 if (selection.isEmpty() == false) { 3531 Toast.makeText(mContext 3532 , com.android.internal.R.string.text_copied 3533 , Toast.LENGTH_SHORT).show(); 3534 mWebViewCore.sendMessage(EventHub.GET_SELECTION, selection); 3535 copiedSomething = true; 3536 } 3537 mExtendSelection = false; 3538 } 3539 mShiftIsPressed = false; 3540 if (mTouchMode == TOUCH_SELECT_MODE) { 3541 mTouchMode = TOUCH_INIT_MODE; 3542 } 3543 return copiedSomething; 3544 } 3545 3546 // Set this as a hierarchy change listener so we can know when this view 3547 // is removed and still have access to our parent. 3548 @Override 3549 protected void onAttachedToWindow() { 3550 super.onAttachedToWindow(); 3551 ViewParent parent = getParent(); 3552 if (parent instanceof ViewGroup) { 3553 ViewGroup p = (ViewGroup) parent; 3554 p.setOnHierarchyChangeListener(this); 3555 } 3556 } 3557 3558 @Override 3559 protected void onDetachedFromWindow() { 3560 super.onDetachedFromWindow(); 3561 ViewParent parent = getParent(); 3562 if (parent instanceof ViewGroup) { 3563 ViewGroup p = (ViewGroup) parent; 3564 p.setOnHierarchyChangeListener(null); 3565 } 3566 3567 // Clean up the zoom controller 3568 mZoomButtonsController.setVisible(false); 3569 } 3570 3571 // Implementation for OnHierarchyChangeListener 3572 public void onChildViewAdded(View parent, View child) {} 3573 3574 public void onChildViewRemoved(View p, View child) { 3575 if (child == this) { 3576 clearTextEntry(); 3577 } 3578 } 3579 3580 /** 3581 * @deprecated WebView should not have implemented 3582 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3583 * does nothing now. 3584 */ 3585 @Deprecated 3586 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3587 } 3588 3589 // To avoid drawing the cursor ring, and remove the TextView when our window 3590 // loses focus. 3591 @Override 3592 public void onWindowFocusChanged(boolean hasWindowFocus) { 3593 if (hasWindowFocus) { 3594 if (hasFocus()) { 3595 // If our window regained focus, and we have focus, then begin 3596 // drawing the cursor ring 3597 mDrawCursorRing = true; 3598 if (mNativeClass != 0) { 3599 nativeRecordButtons(true, false, true); 3600 if (inEditingMode()) { 3601 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3602 } 3603 } 3604 } else { 3605 // If our window gained focus, but we do not have it, do not 3606 // draw the cursor ring. 3607 mDrawCursorRing = false; 3608 // We do not call nativeRecordButtons here because we assume 3609 // that when we lost focus, or window focus, it got called with 3610 // false for the first parameter 3611 } 3612 } else { 3613 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3614 /* 3615 * The zoom controls come in their own window, so our window 3616 * loses focus. Our policy is to not draw the cursor ring if 3617 * our window is not focused, but this is an exception since 3618 * the user can still navigate the web page with the zoom 3619 * controls showing. 3620 */ 3621 // If our window has lost focus, stop drawing the cursor ring 3622 mDrawCursorRing = false; 3623 } 3624 mGotKeyDown = false; 3625 mShiftIsPressed = false; 3626 if (mNativeClass != 0) { 3627 nativeRecordButtons(false, false, true); 3628 } 3629 setFocusControllerInactive(); 3630 } 3631 invalidate(); 3632 super.onWindowFocusChanged(hasWindowFocus); 3633 } 3634 3635 /* 3636 * Pass a message to WebCore Thread, telling the WebCore::Page's 3637 * FocusController to be "inactive" so that it will 3638 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3639 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3640 */ 3641 /* package */ void setFocusControllerInactive() { 3642 // Do not need to also check whether mWebViewCore is null, because 3643 // mNativeClass is only set if mWebViewCore is non null 3644 if (mNativeClass == 0) return; 3645 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3646 } 3647 3648 @Override 3649 protected void onFocusChanged(boolean focused, int direction, 3650 Rect previouslyFocusedRect) { 3651 if (DebugFlags.WEB_VIEW) { 3652 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3653 } 3654 if (focused) { 3655 // When we regain focus, if we have window focus, resume drawing 3656 // the cursor ring 3657 if (hasWindowFocus()) { 3658 mDrawCursorRing = true; 3659 if (mNativeClass != 0) { 3660 nativeRecordButtons(true, false, true); 3661 } 3662 //} else { 3663 // The WebView has gained focus while we do not have 3664 // windowfocus. When our window lost focus, we should have 3665 // called nativeRecordButtons(false...) 3666 } 3667 } else { 3668 // When we lost focus, unless focus went to the TextView (which is 3669 // true if we are in editing mode), stop drawing the cursor ring. 3670 if (!inEditingMode()) { 3671 mDrawCursorRing = false; 3672 if (mNativeClass != 0) { 3673 nativeRecordButtons(false, false, true); 3674 } 3675 setFocusControllerInactive(); 3676 } 3677 mGotKeyDown = false; 3678 } 3679 3680 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3681 } 3682 3683 @Override 3684 protected void onSizeChanged(int w, int h, int ow, int oh) { 3685 super.onSizeChanged(w, h, ow, oh); 3686 // Center zooming to the center of the screen. 3687 if (mZoomScale == 0) { // unless we're already zooming 3688 mZoomCenterX = getViewWidth() * .5f; 3689 mZoomCenterY = getViewHeight() * .5f; 3690 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 3691 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 3692 } 3693 3694 // update mMinZoomScale if the minimum zoom scale is not fixed 3695 if (!mMinZoomScaleFixed) { 3696 // when change from narrow screen to wide screen, the new viewWidth 3697 // can be wider than the old content width. We limit the minimum 3698 // scale to 1.0f. The proper minimum scale will be calculated when 3699 // the new picture shows up. 3700 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 3701 / (mDrawHistory ? mHistoryPicture.getWidth() 3702 : mZoomOverviewWidth)); 3703 if (mInitialScaleInPercent > 0) { 3704 // limit the minZoomScale to the initialScale if it is set 3705 float initialScale = mInitialScaleInPercent / 100.0f; 3706 if (mMinZoomScale > initialScale) { 3707 mMinZoomScale = initialScale; 3708 } 3709 } 3710 } 3711 3712 // we always force, in case our height changed, in which case we still 3713 // want to send the notification over to webkit 3714 // only update the text wrap scale if width changed. 3715 setNewZoomScale(mActualScale, w != ow, true); 3716 } 3717 3718 @Override 3719 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3720 super.onScrollChanged(l, t, oldl, oldt); 3721 3722 sendOurVisibleRect(); 3723 } 3724 3725 3726 @Override 3727 public boolean dispatchKeyEvent(KeyEvent event) { 3728 boolean dispatch = true; 3729 3730 if (!inEditingMode()) { 3731 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3732 mGotKeyDown = true; 3733 } else { 3734 if (!mGotKeyDown) { 3735 /* 3736 * We got a key up for which we were not the recipient of 3737 * the original key down. Don't give it to the view. 3738 */ 3739 dispatch = false; 3740 } 3741 mGotKeyDown = false; 3742 } 3743 } 3744 3745 if (dispatch) { 3746 return super.dispatchKeyEvent(event); 3747 } else { 3748 // We didn't dispatch, so let something else handle the key 3749 return false; 3750 } 3751 } 3752 3753 // Here are the snap align logic: 3754 // 1. If it starts nearly horizontally or vertically, snap align; 3755 // 2. If there is a dramitic direction change, let it go; 3756 // 3. If there is a same direction back and forth, lock it. 3757 3758 // adjustable parameters 3759 private int mMinLockSnapReverseDistance; 3760 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 3761 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 3762 3763 private class ScaleDetectorListener implements 3764 ScaleGestureDetector.OnScaleGestureListener { 3765 3766 public boolean onScaleBegin(ScaleGestureDetector detector) { 3767 // cancel the single touch handling 3768 cancelTouch(); 3769 if (mZoomButtonsController.isVisible()) { 3770 mZoomButtonsController.setVisible(false); 3771 } 3772 // reset the zoom overview mode so that the page won't auto grow 3773 mInZoomOverview = false; 3774 // If it is in password mode, turn it off so it does not draw 3775 // misplaced. 3776 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3777 mWebTextView.setInPassword(false); 3778 } 3779 return true; 3780 } 3781 3782 public void onScaleEnd(ScaleGestureDetector detector) { 3783 if (mPreviewZoomOnly) { 3784 mPreviewZoomOnly = false; 3785 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 3786 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 3787 // don't reflow when zoom in; when zoom out, do reflow if the 3788 // new scale is almost minimum scale; 3789 boolean reflowNow = (mActualScale - mMinZoomScale <= 0.01f) 3790 || ((mActualScale <= 0.8 * mTextWrapScale)); 3791 // force zoom after mPreviewZoomOnly is set to false so that the 3792 // new view size will be passed to the WebKit 3793 setNewZoomScale(mActualScale, reflowNow, true); 3794 // call invalidate() to draw without zoom filter 3795 invalidate(); 3796 } 3797 // adjust the edit text view if needed 3798 if (inEditingMode()) { 3799 adjustTextView(true); 3800 } 3801 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 3802 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 3803 // may trigger the unwanted fling. 3804 mTouchMode = TOUCH_PINCH_DRAG; 3805 startTouch(detector.getFocusX(), detector.getFocusY(), 3806 mLastTouchTime); 3807 } 3808 3809 public boolean onScale(ScaleGestureDetector detector) { 3810 float scale = (float) (Math.round(detector.getScaleFactor() 3811 * mActualScale * 100) / 100.0); 3812 if (Math.abs(scale - mActualScale) >= PREVIEW_SCALE_INCREMENT) { 3813 mPreviewZoomOnly = true; 3814 // limit the scale change per step 3815 if (scale > mActualScale) { 3816 scale = Math.min(scale, mActualScale * 1.25f); 3817 } else { 3818 scale = Math.max(scale, mActualScale * 0.8f); 3819 } 3820 mZoomCenterX = detector.getFocusX(); 3821 mZoomCenterY = detector.getFocusY(); 3822 setNewZoomScale(scale, false, false); 3823 invalidate(); 3824 return true; 3825 } 3826 return false; 3827 } 3828 } 3829 3830 // if the page can scroll <= this value, we won't allow the drag tracker 3831 // to have any effect. 3832 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 3833 3834 private class DragTrackerHandler { 3835 private final DragTracker mProxy; 3836 private final float mStartY, mStartX; 3837 private final float mMinDY, mMinDX; 3838 private final float mMaxDY, mMaxDX; 3839 private float mCurrStretchY, mCurrStretchX; 3840 private int mSX, mSY; 3841 3842 public DragTrackerHandler(float x, float y, DragTracker proxy) { 3843 mProxy = proxy; 3844 3845 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 3846 int viewTop = getScrollY(); 3847 int viewBottom = viewTop + getHeight(); 3848 3849 mStartY = y; 3850 mMinDY = -viewTop; 3851 mMaxDY = docBottom - viewBottom; 3852 3853 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 3854 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 3855 " up/down= " + mMinDY + " " + mMaxDY); 3856 } 3857 3858 int docRight = computeHorizontalScrollRange(); 3859 int viewLeft = getScrollX(); 3860 int viewRight = viewLeft + getWidth(); 3861 mStartX = x; 3862 mMinDX = -viewLeft; 3863 mMaxDX = docRight - viewRight; 3864 3865 mProxy.onStartDrag(x, y); 3866 3867 // ensure we buildBitmap at least once 3868 mSX = -99999; 3869 } 3870 3871 private float computeStretch(float delta, float min, float max) { 3872 float stretch = 0; 3873 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 3874 if (delta < min) { 3875 stretch = delta - min; 3876 } else if (delta > max) { 3877 stretch = delta - max; 3878 } 3879 } 3880 return stretch; 3881 } 3882 3883 public void dragTo(float x, float y) { 3884 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 3885 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 3886 3887 if (mCurrStretchX != sx || mCurrStretchY != sy) { 3888 mCurrStretchX = sx; 3889 mCurrStretchY = sy; 3890 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 3891 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 3892 " " + sy); 3893 } 3894 if (mProxy.onStretchChange(sx, sy)) { 3895 invalidate(); 3896 } 3897 } 3898 } 3899 3900 public void stopDrag() { 3901 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 3902 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag"); 3903 } 3904 mProxy.onStopDrag(); 3905 } 3906 3907 private int hiddenHeightOfTitleBar() { 3908 return getTitleHeight() - getVisibleTitleHeight(); 3909 } 3910 3911 // need a way to know if 565 or 8888 is the right config for 3912 // capturing the display and giving it to the drag proxy 3913 private Bitmap.Config offscreenBitmapConfig() { 3914 // hard code 565 for now 3915 return Bitmap.Config.RGB_565; 3916 } 3917 3918 /* If the tracker draws, then this returns true, otherwise it will 3919 return false, and draw nothing. 3920 */ 3921 public boolean draw(Canvas canvas) { 3922 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 3923 int sx = getScrollX(); 3924 int sy = getScrollY() - hiddenHeightOfTitleBar(); 3925 3926 if (mSX != sx || mSY != sy) { 3927 buildBitmap(sx, sy); 3928 mSX = sx; 3929 mSY = sy; 3930 } 3931 3932 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 3933 canvas.translate(sx, sy); 3934 mProxy.onDraw(canvas); 3935 canvas.restoreToCount(count); 3936 return true; 3937 } 3938 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 3939 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 3940 mCurrStretchX + " " + mCurrStretchY); 3941 } 3942 return false; 3943 } 3944 3945 private void buildBitmap(int sx, int sy) { 3946 int w = getWidth(); 3947 int h = getViewHeight(); 3948 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 3949 Canvas canvas = new Canvas(bm); 3950 canvas.translate(-sx, -sy); 3951 drawContent(canvas); 3952 3953 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 3954 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 3955 " " + sy + " " + w + " " + h); 3956 } 3957 mProxy.onBitmapChange(bm); 3958 } 3959 } 3960 3961 /** @hide */ 3962 public static class DragTracker { 3963 public void onStartDrag(float x, float y) {} 3964 public boolean onStretchChange(float sx, float sy) { 3965 // return true to have us inval the view 3966 return false; 3967 } 3968 public void onStopDrag() {} 3969 public void onBitmapChange(Bitmap bm) {} 3970 public void onDraw(Canvas canvas) {} 3971 } 3972 3973 /** @hide */ 3974 public DragTracker getDragTracker() { 3975 return mDragTracker; 3976 } 3977 3978 /** @hide */ 3979 public void setDragTracker(DragTracker tracker) { 3980 mDragTracker = tracker; 3981 } 3982 3983 private DragTracker mDragTracker; 3984 private DragTrackerHandler mDragTrackerHandler; 3985 3986 @Override 3987 public boolean onTouchEvent(MotionEvent ev) { 3988 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 3989 return false; 3990 } 3991 3992 if (DebugFlags.WEB_VIEW) { 3993 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 3994 + mTouchMode); 3995 } 3996 3997 int action; 3998 float x, y; 3999 long eventTime = ev.getEventTime(); 4000 4001 // FIXME: we may consider to give WebKit an option to handle multi-touch 4002 // events later. 4003 if (mSupportMultiTouch && mMinZoomScale < mMaxZoomScale 4004 && ev.getPointerCount() > 1) { 4005 mScaleDetector.onTouchEvent(ev); 4006 if (mScaleDetector.isInProgress()) { 4007 mLastTouchTime = eventTime; 4008 return true; 4009 } 4010 x = mScaleDetector.getFocusX(); 4011 y = mScaleDetector.getFocusY(); 4012 action = ev.getAction() & MotionEvent.ACTION_MASK; 4013 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4014 cancelTouch(); 4015 action = MotionEvent.ACTION_DOWN; 4016 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4017 // set mLastTouchX/Y to the remaining point 4018 mLastTouchX = x; 4019 mLastTouchY = y; 4020 } else if (action == MotionEvent.ACTION_MOVE) { 4021 // negative x or y indicate it is on the edge, skip it. 4022 if (x < 0 || y < 0) { 4023 return true; 4024 } 4025 } 4026 } else { 4027 action = ev.getAction(); 4028 x = ev.getX(); 4029 y = ev.getY(); 4030 } 4031 4032 // Due to the touch screen edge effect, a touch closer to the edge 4033 // always snapped to the edge. As getViewWidth() can be different from 4034 // getWidth() due to the scrollbar, adjusting the point to match 4035 // getViewWidth(). Same applied to the height. 4036 if (x > getViewWidth() - 1) { 4037 x = getViewWidth() - 1; 4038 } 4039 if (y > getViewHeightWithTitle() - 1) { 4040 y = getViewHeightWithTitle() - 1; 4041 } 4042 4043 // pass the touch events from UI thread to WebCore thread 4044 if (mForwardTouchEvents && (action != MotionEvent.ACTION_MOVE 4045 || eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 4046 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 4047 ted.mAction = action; 4048 ted.mX = viewToContentX((int) x + mScrollX); 4049 ted.mY = viewToContentY((int) y + mScrollY); 4050 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4051 mLastSentTouchTime = eventTime; 4052 } 4053 4054 int deltaX = (int) (mLastTouchX - x); 4055 int deltaY = (int) (mLastTouchY - y); 4056 4057 switch (action) { 4058 case MotionEvent.ACTION_DOWN: { 4059 mPreventDrag = PREVENT_DRAG_NO; 4060 if (!mScroller.isFinished()) { 4061 // stop the current scroll animation, but if this is 4062 // the start of a fling, allow it to add to the current 4063 // fling's velocity 4064 mScroller.abortAnimation(); 4065 mTouchMode = TOUCH_DRAG_START_MODE; 4066 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 4067 } else if (mShiftIsPressed) { 4068 mSelectX = mScrollX + (int) x; 4069 mSelectY = mScrollY + (int) y; 4070 mTouchMode = TOUCH_SELECT_MODE; 4071 if (DebugFlags.WEB_VIEW) { 4072 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4073 } 4074 nativeMoveSelection(viewToContentX(mSelectX), 4075 viewToContentY(mSelectY), false); 4076 mTouchSelection = mExtendSelection = true; 4077 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4078 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4079 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4080 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4081 } else { 4082 // commit the short press action for the previous tap 4083 doShortPress(); 4084 // continue, mTouchMode should be still TOUCH_INIT_MODE 4085 } 4086 } else { 4087 mPreviewZoomOnly = false; 4088 mTouchMode = TOUCH_INIT_MODE; 4089 mPreventDrag = mForwardTouchEvents ? PREVENT_DRAG_MAYBE_YES 4090 : PREVENT_DRAG_NO; 4091 mWebViewCore.sendMessage( 4092 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4093 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4094 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 4095 (eventTime - mLastTouchUpTime), eventTime); 4096 } 4097 } 4098 // Trigger the link 4099 if (mTouchMode == TOUCH_INIT_MODE 4100 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4101 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4102 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 4103 } 4104 // Remember where the motion event started 4105 startTouch(x, y, eventTime); 4106 if (mDragTracker != null) { 4107 mDragTrackerHandler = new DragTrackerHandler(x, y, 4108 mDragTracker); 4109 } 4110 break; 4111 } 4112 case MotionEvent.ACTION_MOVE: { 4113 if (mTouchMode == TOUCH_DONE_MODE) { 4114 // no dragging during scroll zoom animation 4115 break; 4116 } 4117 mVelocityTracker.addMovement(ev); 4118 4119 if (mTouchMode != TOUCH_DRAG_MODE) { 4120 if (mTouchMode == TOUCH_SELECT_MODE) { 4121 mSelectX = mScrollX + (int) x; 4122 mSelectY = mScrollY + (int) y; 4123 if (DebugFlags.WEB_VIEW) { 4124 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4125 } 4126 nativeMoveSelection(viewToContentX(mSelectX), 4127 viewToContentY(mSelectY), true); 4128 invalidate(); 4129 break; 4130 } 4131 if ((deltaX * deltaX + deltaY * deltaY) < mTouchSlopSquare) { 4132 break; 4133 } 4134 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4135 // track mLastTouchTime as we may need to do fling at 4136 // ACTION_UP 4137 mLastTouchTime = eventTime; 4138 break; 4139 } 4140 if (mTouchMode == TOUCH_SHORTPRESS_MODE 4141 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4142 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4143 } else if (mTouchMode == TOUCH_INIT_MODE 4144 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4145 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4146 } 4147 4148 // if it starts nearly horizontal or vertical, enforce it 4149 int ax = Math.abs(deltaX); 4150 int ay = Math.abs(deltaY); 4151 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4152 mSnapScrollMode = SNAP_X; 4153 mSnapPositive = deltaX > 0; 4154 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4155 mSnapScrollMode = SNAP_Y; 4156 mSnapPositive = deltaY > 0; 4157 } 4158 4159 mTouchMode = TOUCH_DRAG_MODE; 4160 WebViewCore.pauseUpdate(mWebViewCore); 4161 if (!mDragFromTextInput) { 4162 nativeHideCursor(); 4163 } 4164 WebSettings settings = getSettings(); 4165 if (settings.supportZoom() 4166 && settings.getBuiltInZoomControls() 4167 && !mZoomButtonsController.isVisible() 4168 && mMinZoomScale < mMaxZoomScale) { 4169 mZoomButtonsController.setVisible(true); 4170 int count = settings.getDoubleTapToastCount(); 4171 if (mInZoomOverview && count > 0) { 4172 settings.setDoubleTapToastCount(--count); 4173 Toast.makeText(mContext, 4174 com.android.internal.R.string.double_tap_toast, 4175 Toast.LENGTH_LONG).show(); 4176 } 4177 } 4178 } 4179 4180 // do pan 4181 int newScrollX = pinLocX(mScrollX + deltaX); 4182 deltaX = newScrollX - mScrollX; 4183 int newScrollY = pinLocY(mScrollY + deltaY); 4184 deltaY = newScrollY - mScrollY; 4185 boolean done = false; 4186 if (deltaX == 0 && deltaY == 0) { 4187 done = true; 4188 } else { 4189 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4190 int ax = Math.abs(deltaX); 4191 int ay = Math.abs(deltaY); 4192 if (mSnapScrollMode == SNAP_X) { 4193 // radical change means getting out of snap mode 4194 if (ay > MAX_SLOPE_FOR_DIAG * ax 4195 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4196 mSnapScrollMode = SNAP_NONE; 4197 } 4198 // reverse direction means lock in the snap mode 4199 if ((ax > MAX_SLOPE_FOR_DIAG * ay) && 4200 ((mSnapPositive && 4201 deltaX < -mMinLockSnapReverseDistance) 4202 || (!mSnapPositive && 4203 deltaX > mMinLockSnapReverseDistance))) { 4204 mSnapScrollMode = SNAP_X_LOCK; 4205 } 4206 } else { 4207 // radical change means getting out of snap mode 4208 if ((ax > MAX_SLOPE_FOR_DIAG * ay) 4209 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4210 mSnapScrollMode = SNAP_NONE; 4211 } 4212 // reverse direction means lock in the snap mode 4213 if ((ay > MAX_SLOPE_FOR_DIAG * ax) && 4214 ((mSnapPositive && 4215 deltaY < -mMinLockSnapReverseDistance) 4216 || (!mSnapPositive && 4217 deltaY > mMinLockSnapReverseDistance))) { 4218 mSnapScrollMode = SNAP_Y_LOCK; 4219 } 4220 } 4221 } 4222 4223 if (mSnapScrollMode == SNAP_X 4224 || mSnapScrollMode == SNAP_X_LOCK) { 4225 if (deltaX == 0) { 4226 // keep the scrollbar on the screen even there is no 4227 // scroll 4228 awakenScrollBars(ViewConfiguration 4229 .getScrollDefaultDelay(), false); 4230 } else { 4231 scrollBy(deltaX, 0); 4232 } 4233 mLastTouchX = x; 4234 } else if (mSnapScrollMode == SNAP_Y 4235 || mSnapScrollMode == SNAP_Y_LOCK) { 4236 if (deltaY == 0) { 4237 // keep the scrollbar on the screen even there is no 4238 // scroll 4239 awakenScrollBars(ViewConfiguration 4240 .getScrollDefaultDelay(), false); 4241 } else { 4242 scrollBy(0, deltaY); 4243 } 4244 mLastTouchY = y; 4245 } else { 4246 scrollBy(deltaX, deltaY); 4247 mLastTouchX = x; 4248 mLastTouchY = y; 4249 } 4250 mLastTouchTime = eventTime; 4251 mUserScroll = true; 4252 } 4253 4254 if (!getSettings().getBuiltInZoomControls()) { 4255 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 4256 if (mZoomControls != null && showPlusMinus) { 4257 if (mZoomControls.getVisibility() == View.VISIBLE) { 4258 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4259 } else { 4260 mZoomControls.show(showPlusMinus, false); 4261 } 4262 mPrivateHandler.postDelayed(mZoomControlRunnable, 4263 ZOOM_CONTROLS_TIMEOUT); 4264 } 4265 } 4266 4267 if (mDragTrackerHandler != null) { 4268 mDragTrackerHandler.dragTo(x, y); 4269 } 4270 4271 if (done) { 4272 // keep the scrollbar on the screen even there is no scroll 4273 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4274 false); 4275 // return false to indicate that we can't pan out of the 4276 // view space 4277 return false; 4278 } 4279 break; 4280 } 4281 case MotionEvent.ACTION_UP: { 4282 if (mDragTrackerHandler != null) { 4283 mDragTrackerHandler.stopDrag(); 4284 mDragTrackerHandler = null; 4285 } 4286 mLastTouchUpTime = eventTime; 4287 switch (mTouchMode) { 4288 case TOUCH_DOUBLE_TAP_MODE: // double tap 4289 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4290 mTouchMode = TOUCH_DONE_MODE; 4291 doDoubleTap(); 4292 break; 4293 case TOUCH_SELECT_MODE: 4294 commitCopy(); 4295 mTouchSelection = false; 4296 break; 4297 case TOUCH_INIT_MODE: // tap 4298 case TOUCH_SHORTPRESS_START_MODE: 4299 case TOUCH_SHORTPRESS_MODE: 4300 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4301 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4302 if ((deltaX * deltaX + deltaY * deltaY) > mTouchSlopSquare) { 4303 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4304 " WebCore's response for touch down."); 4305 if (computeHorizontalScrollExtent() < computeHorizontalScrollRange() 4306 || computeVerticalScrollExtent() < computeVerticalScrollRange()) { 4307 // we will not rewrite drag code here, but we 4308 // will try fling if it applies. 4309 WebViewCore.pauseUpdate(mWebViewCore); 4310 // fall through to TOUCH_DRAG_MODE 4311 } else { 4312 break; 4313 } 4314 } else { 4315 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4316 // if mPreventDrag is not confirmed, treat it as 4317 // no so that it won't block tap or double tap. 4318 mPreventDrag = PREVENT_DRAG_NO; 4319 } 4320 if (mPreventDrag == PREVENT_DRAG_NO) { 4321 if (mTouchMode == TOUCH_INIT_MODE) { 4322 mPrivateHandler.sendMessageDelayed( 4323 mPrivateHandler.obtainMessage( 4324 RELEASE_SINGLE_TAP), 4325 ViewConfiguration.getDoubleTapTimeout()); 4326 } else { 4327 mTouchMode = TOUCH_DONE_MODE; 4328 doShortPress(); 4329 } 4330 } 4331 break; 4332 } 4333 case TOUCH_DRAG_MODE: 4334 // redraw in high-quality, as we're done dragging 4335 invalidate(); 4336 // if the user waits a while w/o moving before the 4337 // up, we don't want to do a fling 4338 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4339 mVelocityTracker.addMovement(ev); 4340 doFling(); 4341 break; 4342 } 4343 mLastVelocity = 0; 4344 WebViewCore.resumeUpdate(mWebViewCore); 4345 break; 4346 case TOUCH_DRAG_START_MODE: 4347 case TOUCH_DONE_MODE: 4348 // do nothing 4349 break; 4350 } 4351 // we also use mVelocityTracker == null to tell us that we are 4352 // not "moving around", so we can take the slower/prettier 4353 // mode in the drawing code 4354 if (mVelocityTracker != null) { 4355 mVelocityTracker.recycle(); 4356 mVelocityTracker = null; 4357 } 4358 break; 4359 } 4360 case MotionEvent.ACTION_CANCEL: { 4361 if (mDragTrackerHandler != null) { 4362 mDragTrackerHandler.stopDrag(); 4363 mDragTrackerHandler = null; 4364 } 4365 cancelTouch(); 4366 break; 4367 } 4368 } 4369 return true; 4370 } 4371 4372 private void startTouch(float x, float y, long eventTime) { 4373 mLastTouchX = x; 4374 mLastTouchY = y; 4375 mLastTouchTime = eventTime; 4376 mVelocityTracker = VelocityTracker.obtain(); 4377 mSnapScrollMode = SNAP_NONE; 4378 } 4379 4380 private void cancelTouch() { 4381 // we also use mVelocityTracker == null to tell us that we are not 4382 // "moving around", so we can take the slower/prettier mode in the 4383 // drawing code 4384 if (mVelocityTracker != null) { 4385 mVelocityTracker.recycle(); 4386 mVelocityTracker = null; 4387 } 4388 if (mTouchMode == TOUCH_DRAG_MODE) { 4389 WebViewCore.resumeUpdate(mWebViewCore); 4390 } 4391 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4392 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4393 mTouchMode = TOUCH_DONE_MODE; 4394 nativeHideCursor(); 4395 } 4396 4397 private long mTrackballFirstTime = 0; 4398 private long mTrackballLastTime = 0; 4399 private float mTrackballRemainsX = 0.0f; 4400 private float mTrackballRemainsY = 0.0f; 4401 private int mTrackballXMove = 0; 4402 private int mTrackballYMove = 0; 4403 private boolean mExtendSelection = false; 4404 private boolean mTouchSelection = false; 4405 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4406 private static final int TRACKBALL_TIMEOUT = 200; 4407 private static final int TRACKBALL_WAIT = 100; 4408 private static final int TRACKBALL_SCALE = 400; 4409 private static final int TRACKBALL_SCROLL_COUNT = 5; 4410 private static final int TRACKBALL_MOVE_COUNT = 10; 4411 private static final int TRACKBALL_MULTIPLIER = 3; 4412 private static final int SELECT_CURSOR_OFFSET = 16; 4413 private int mSelectX = 0; 4414 private int mSelectY = 0; 4415 private boolean mShiftIsPressed = false; 4416 private boolean mTrackballDown = false; 4417 private long mTrackballUpTime = 0; 4418 private long mLastCursorTime = 0; 4419 private Rect mLastCursorBounds; 4420 4421 // Set by default; BrowserActivity clears to interpret trackball data 4422 // directly for movement. Currently, the framework only passes 4423 // arrow key events, not trackball events, from one child to the next 4424 private boolean mMapTrackballToArrowKeys = true; 4425 4426 public void setMapTrackballToArrowKeys(boolean setMap) { 4427 mMapTrackballToArrowKeys = setMap; 4428 } 4429 4430 void resetTrackballTime() { 4431 mTrackballLastTime = 0; 4432 } 4433 4434 @Override 4435 public boolean onTrackballEvent(MotionEvent ev) { 4436 long time = ev.getEventTime(); 4437 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4438 if (ev.getY() > 0) pageDown(true); 4439 if (ev.getY() < 0) pageUp(true); 4440 return true; 4441 } 4442 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4443 if (mShiftIsPressed) { 4444 return true; // discard press if copy in progress 4445 } 4446 mTrackballDown = true; 4447 if (mNativeClass == 0) { 4448 return false; 4449 } 4450 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4451 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4452 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4453 nativeSelectBestAt(mLastCursorBounds); 4454 } 4455 if (DebugFlags.WEB_VIEW) { 4456 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4457 + " time=" + time 4458 + " mLastCursorTime=" + mLastCursorTime); 4459 } 4460 if (isInTouchMode()) requestFocusFromTouch(); 4461 return false; // let common code in onKeyDown at it 4462 } 4463 if (ev.getAction() == MotionEvent.ACTION_UP) { 4464 // LONG_PRESS_CENTER is set in common onKeyDown 4465 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4466 mTrackballDown = false; 4467 mTrackballUpTime = time; 4468 if (mShiftIsPressed) { 4469 if (mExtendSelection) { 4470 commitCopy(); 4471 } else { 4472 mExtendSelection = true; 4473 } 4474 return true; // discard press if copy in progress 4475 } 4476 if (DebugFlags.WEB_VIEW) { 4477 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4478 + " time=" + time 4479 ); 4480 } 4481 return false; // let common code in onKeyUp at it 4482 } 4483 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4484 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4485 return false; 4486 } 4487 if (mTrackballDown) { 4488 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4489 return true; // discard move if trackball is down 4490 } 4491 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4492 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4493 return true; 4494 } 4495 // TODO: alternatively we can do panning as touch does 4496 switchOutDrawHistory(); 4497 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4498 if (DebugFlags.WEB_VIEW) { 4499 Log.v(LOGTAG, "onTrackballEvent time=" 4500 + time + " last=" + mTrackballLastTime); 4501 } 4502 mTrackballFirstTime = time; 4503 mTrackballXMove = mTrackballYMove = 0; 4504 } 4505 mTrackballLastTime = time; 4506 if (DebugFlags.WEB_VIEW) { 4507 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4508 } 4509 mTrackballRemainsX += ev.getX(); 4510 mTrackballRemainsY += ev.getY(); 4511 doTrackball(time); 4512 return true; 4513 } 4514 4515 void moveSelection(float xRate, float yRate) { 4516 if (mNativeClass == 0) 4517 return; 4518 int width = getViewWidth(); 4519 int height = getViewHeight(); 4520 mSelectX += scaleTrackballX(xRate, width); 4521 mSelectY += scaleTrackballY(yRate, height); 4522 int maxX = width + mScrollX; 4523 int maxY = height + mScrollY; 4524 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4525 , mSelectX)); 4526 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4527 , mSelectY)); 4528 if (DebugFlags.WEB_VIEW) { 4529 Log.v(LOGTAG, "moveSelection" 4530 + " mSelectX=" + mSelectX 4531 + " mSelectY=" + mSelectY 4532 + " mScrollX=" + mScrollX 4533 + " mScrollY=" + mScrollY 4534 + " xRate=" + xRate 4535 + " yRate=" + yRate 4536 ); 4537 } 4538 nativeMoveSelection(viewToContentX(mSelectX), 4539 viewToContentY(mSelectY), mExtendSelection); 4540 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4541 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4542 : 0; 4543 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4544 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4545 : 0; 4546 pinScrollBy(scrollX, scrollY, true, 0); 4547 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4548 requestRectangleOnScreen(select); 4549 invalidate(); 4550 } 4551 4552 private int scaleTrackballX(float xRate, int width) { 4553 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4554 int nextXMove = xMove; 4555 if (xMove > 0) { 4556 if (xMove > mTrackballXMove) { 4557 xMove -= mTrackballXMove; 4558 } 4559 } else if (xMove < mTrackballXMove) { 4560 xMove -= mTrackballXMove; 4561 } 4562 mTrackballXMove = nextXMove; 4563 return xMove; 4564 } 4565 4566 private int scaleTrackballY(float yRate, int height) { 4567 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4568 int nextYMove = yMove; 4569 if (yMove > 0) { 4570 if (yMove > mTrackballYMove) { 4571 yMove -= mTrackballYMove; 4572 } 4573 } else if (yMove < mTrackballYMove) { 4574 yMove -= mTrackballYMove; 4575 } 4576 mTrackballYMove = nextYMove; 4577 return yMove; 4578 } 4579 4580 private int keyCodeToSoundsEffect(int keyCode) { 4581 switch(keyCode) { 4582 case KeyEvent.KEYCODE_DPAD_UP: 4583 return SoundEffectConstants.NAVIGATION_UP; 4584 case KeyEvent.KEYCODE_DPAD_RIGHT: 4585 return SoundEffectConstants.NAVIGATION_RIGHT; 4586 case KeyEvent.KEYCODE_DPAD_DOWN: 4587 return SoundEffectConstants.NAVIGATION_DOWN; 4588 case KeyEvent.KEYCODE_DPAD_LEFT: 4589 return SoundEffectConstants.NAVIGATION_LEFT; 4590 } 4591 throw new IllegalArgumentException("keyCode must be one of " + 4592 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4593 "KEYCODE_DPAD_LEFT}."); 4594 } 4595 4596 private void doTrackball(long time) { 4597 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4598 if (elapsed == 0) { 4599 elapsed = TRACKBALL_TIMEOUT; 4600 } 4601 float xRate = mTrackballRemainsX * 1000 / elapsed; 4602 float yRate = mTrackballRemainsY * 1000 / elapsed; 4603 if (mShiftIsPressed) { 4604 moveSelection(xRate, yRate); 4605 mTrackballRemainsX = mTrackballRemainsY = 0; 4606 return; 4607 } 4608 float ax = Math.abs(xRate); 4609 float ay = Math.abs(yRate); 4610 float maxA = Math.max(ax, ay); 4611 if (DebugFlags.WEB_VIEW) { 4612 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4613 + " xRate=" + xRate 4614 + " yRate=" + yRate 4615 + " mTrackballRemainsX=" + mTrackballRemainsX 4616 + " mTrackballRemainsY=" + mTrackballRemainsY); 4617 } 4618 int width = mContentWidth - getViewWidth(); 4619 int height = mContentHeight - getViewHeight(); 4620 if (width < 0) width = 0; 4621 if (height < 0) height = 0; 4622 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4623 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4624 maxA = Math.max(ax, ay); 4625 int count = Math.max(0, (int) maxA); 4626 int oldScrollX = mScrollX; 4627 int oldScrollY = mScrollY; 4628 if (count > 0) { 4629 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4630 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4631 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4632 KeyEvent.KEYCODE_DPAD_RIGHT; 4633 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4634 if (DebugFlags.WEB_VIEW) { 4635 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4636 + " count=" + count 4637 + " mTrackballRemainsX=" + mTrackballRemainsX 4638 + " mTrackballRemainsY=" + mTrackballRemainsY); 4639 } 4640 if (navHandledKey(selectKeyCode, count, false, time, false)) { 4641 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4642 } 4643 mTrackballRemainsX = mTrackballRemainsY = 0; 4644 } 4645 if (count >= TRACKBALL_SCROLL_COUNT) { 4646 int xMove = scaleTrackballX(xRate, width); 4647 int yMove = scaleTrackballY(yRate, height); 4648 if (DebugFlags.WEB_VIEW) { 4649 Log.v(LOGTAG, "doTrackball pinScrollBy" 4650 + " count=" + count 4651 + " xMove=" + xMove + " yMove=" + yMove 4652 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4653 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4654 ); 4655 } 4656 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4657 xMove = 0; 4658 } 4659 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4660 yMove = 0; 4661 } 4662 if (xMove != 0 || yMove != 0) { 4663 pinScrollBy(xMove, yMove, true, 0); 4664 } 4665 mUserScroll = true; 4666 } 4667 } 4668 4669 private int computeMaxScrollY() { 4670 int maxContentH = computeVerticalScrollRange() + getTitleHeight(); 4671 return Math.max(maxContentH - getViewHeightWithTitle(), getTitleHeight()); 4672 } 4673 4674 public void flingScroll(int vx, int vy) { 4675 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4676 int maxY = computeMaxScrollY(); 4677 4678 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 4679 invalidate(); 4680 } 4681 4682 private void doFling() { 4683 if (mVelocityTracker == null) { 4684 return; 4685 } 4686 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4687 int maxY = computeMaxScrollY(); 4688 4689 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 4690 int vx = (int) mVelocityTracker.getXVelocity(); 4691 int vy = (int) mVelocityTracker.getYVelocity(); 4692 4693 if (mSnapScrollMode != SNAP_NONE) { 4694 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_X_LOCK) { 4695 vy = 0; 4696 } else { 4697 vx = 0; 4698 } 4699 } 4700 4701 if (true /* EMG release: make our fling more like Maps' */) { 4702 // maps cuts their velocity in half 4703 vx = vx * 3 / 4; 4704 vy = vy * 3 / 4; 4705 } 4706 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 4707 WebViewCore.resumeUpdate(mWebViewCore); 4708 return; 4709 } 4710 float currentVelocity = mScroller.getCurrVelocity(); 4711 if (mLastVelocity > 0 && currentVelocity > 0) { 4712 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 4713 - Math.atan2(vy, vx))); 4714 final float circle = (float) (Math.PI) * 2.0f; 4715 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 4716 vx += currentVelocity * mLastVelX / mLastVelocity; 4717 vy += currentVelocity * mLastVelY / mLastVelocity; 4718 if (DebugFlags.WEB_VIEW) { 4719 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 4720 } 4721 } else if (DebugFlags.WEB_VIEW) { 4722 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 4723 } 4724 } else if (DebugFlags.WEB_VIEW) { 4725 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 4726 + " current=" + currentVelocity 4727 + " vx=" + vx + " vy=" + vy 4728 + " maxX=" + maxX + " maxY=" + maxY 4729 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 4730 } 4731 mLastVelX = vx; 4732 mLastVelY = vy; 4733 mLastVelocity = (float) Math.hypot(vx, vy); 4734 4735 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 4736 // TODO: duration is calculated based on velocity, if the range is 4737 // small, the animation will stop before duration is up. We may 4738 // want to calculate how long the animation is going to run to precisely 4739 // resume the webcore update. 4740 final int time = mScroller.getDuration(); 4741 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_UPDATE, time); 4742 awakenScrollBars(time); 4743 invalidate(); 4744 } 4745 4746 private boolean zoomWithPreview(float scale) { 4747 float oldScale = mActualScale; 4748 mInitialScrollX = mScrollX; 4749 mInitialScrollY = mScrollY; 4750 4751 // snap to DEFAULT_SCALE if it is close 4752 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 4753 scale = mDefaultScale; 4754 } 4755 4756 setNewZoomScale(scale, true, false); 4757 4758 if (oldScale != mActualScale) { 4759 // use mZoomPickerScale to see zoom preview first 4760 mZoomStart = SystemClock.uptimeMillis(); 4761 mInvInitialZoomScale = 1.0f / oldScale; 4762 mInvFinalZoomScale = 1.0f / mActualScale; 4763 mZoomScale = mActualScale; 4764 invalidate(); 4765 return true; 4766 } else { 4767 return false; 4768 } 4769 } 4770 4771 /** 4772 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 4773 * in charge of installing this view to the view hierarchy. This view will 4774 * become visible when the user starts scrolling via touch and fade away if 4775 * the user does not interact with it. 4776 * <p/> 4777 * API version 3 introduces a built-in zoom mechanism that is shown 4778 * automatically by the MapView. This is the preferred approach for 4779 * showing the zoom UI. 4780 * 4781 * @deprecated The built-in zoom mechanism is preferred, see 4782 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 4783 */ 4784 @Deprecated 4785 public View getZoomControls() { 4786 if (!getSettings().supportZoom()) { 4787 Log.w(LOGTAG, "This WebView doesn't support zoom."); 4788 return null; 4789 } 4790 if (mZoomControls == null) { 4791 mZoomControls = createZoomControls(); 4792 4793 /* 4794 * need to be set to VISIBLE first so that getMeasuredHeight() in 4795 * {@link #onSizeChanged()} can return the measured value for proper 4796 * layout. 4797 */ 4798 mZoomControls.setVisibility(View.VISIBLE); 4799 mZoomControlRunnable = new Runnable() { 4800 public void run() { 4801 4802 /* Don't dismiss the controls if the user has 4803 * focus on them. Wait and check again later. 4804 */ 4805 if (!mZoomControls.hasFocus()) { 4806 mZoomControls.hide(); 4807 } else { 4808 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4809 mPrivateHandler.postDelayed(mZoomControlRunnable, 4810 ZOOM_CONTROLS_TIMEOUT); 4811 } 4812 } 4813 }; 4814 } 4815 return mZoomControls; 4816 } 4817 4818 private ExtendedZoomControls createZoomControls() { 4819 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 4820 , null); 4821 zoomControls.setOnZoomInClickListener(new OnClickListener() { 4822 public void onClick(View v) { 4823 // reset time out 4824 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4825 mPrivateHandler.postDelayed(mZoomControlRunnable, 4826 ZOOM_CONTROLS_TIMEOUT); 4827 zoomIn(); 4828 } 4829 }); 4830 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 4831 public void onClick(View v) { 4832 // reset time out 4833 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4834 mPrivateHandler.postDelayed(mZoomControlRunnable, 4835 ZOOM_CONTROLS_TIMEOUT); 4836 zoomOut(); 4837 } 4838 }); 4839 return zoomControls; 4840 } 4841 4842 /** 4843 * Gets the {@link ZoomButtonsController} which can be used to add 4844 * additional buttons to the zoom controls window. 4845 * 4846 * @return The instance of {@link ZoomButtonsController} used by this class, 4847 * or null if it is unavailable. 4848 * @hide 4849 */ 4850 public ZoomButtonsController getZoomButtonsController() { 4851 return mZoomButtonsController; 4852 } 4853 4854 /** 4855 * Perform zoom in in the webview 4856 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 4857 */ 4858 public boolean zoomIn() { 4859 // TODO: alternatively we can disallow this during draw history mode 4860 switchOutDrawHistory(); 4861 mInZoomOverview = false; 4862 // Center zooming to the center of the screen. 4863 mZoomCenterX = getViewWidth() * .5f; 4864 mZoomCenterY = getViewHeight() * .5f; 4865 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4866 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4867 return zoomWithPreview(mActualScale * 1.25f); 4868 } 4869 4870 /** 4871 * Perform zoom out in the webview 4872 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 4873 */ 4874 public boolean zoomOut() { 4875 // TODO: alternatively we can disallow this during draw history mode 4876 switchOutDrawHistory(); 4877 // Center zooming to the center of the screen. 4878 mZoomCenterX = getViewWidth() * .5f; 4879 mZoomCenterY = getViewHeight() * .5f; 4880 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4881 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4882 return zoomWithPreview(mActualScale * 0.8f); 4883 } 4884 4885 private void updateSelection() { 4886 if (mNativeClass == 0) { 4887 return; 4888 } 4889 // mLastTouchX and mLastTouchY are the point in the current viewport 4890 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4891 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4892 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 4893 contentX + mNavSlop, contentY + mNavSlop); 4894 nativeSelectBestAt(rect); 4895 } 4896 4897 /** 4898 * Scroll the focused text field/area to match the WebTextView 4899 * @param xPercent New x position of the WebTextView from 0 to 1. 4900 * @param y New y position of the WebTextView in view coordinates 4901 */ 4902 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 4903 if (!inEditingMode() || mWebViewCore == null) { 4904 return; 4905 } 4906 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 4907 // Since this position is relative to the top of the text input 4908 // field, we do not need to take the title bar's height into 4909 // consideration. 4910 viewToContentDimension(y), 4911 new Float(xPercent)); 4912 } 4913 4914 /** 4915 * Set our starting point and time for a drag from the WebTextView. 4916 */ 4917 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 4918 if (!inEditingMode()) { 4919 return; 4920 } 4921 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 4922 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 4923 mLastTouchTime = eventTime; 4924 if (!mScroller.isFinished()) { 4925 abortAnimation(); 4926 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 4927 } 4928 mSnapScrollMode = SNAP_NONE; 4929 mVelocityTracker = VelocityTracker.obtain(); 4930 mTouchMode = TOUCH_DRAG_START_MODE; 4931 } 4932 4933 /** 4934 * Given a motion event from the WebTextView, set its location to our 4935 * coordinates, and handle the event. 4936 */ 4937 /*package*/ boolean textFieldDrag(MotionEvent event) { 4938 if (!inEditingMode()) { 4939 return false; 4940 } 4941 mDragFromTextInput = true; 4942 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 4943 (float) (mWebTextView.getTop() - mScrollY)); 4944 boolean result = onTouchEvent(event); 4945 mDragFromTextInput = false; 4946 return result; 4947 } 4948 4949 /** 4950 * Do a touch up from a WebTextView. This will be handled by webkit to 4951 * change the selection. 4952 * @param event MotionEvent in the WebTextView's coordinates. 4953 */ 4954 /*package*/ void touchUpOnTextField(MotionEvent event) { 4955 if (!inEditingMode()) { 4956 return; 4957 } 4958 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 4959 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 4960 // In case the soft keyboard has been dismissed, bring it back up. 4961 InputMethodManager.getInstance(getContext()).showSoftInput(mWebTextView, 4962 0); 4963 if (nativeFocusNodePointer() != nativeCursorNodePointer()) { 4964 nativeMotionUp(x, y, mNavSlop); 4965 } 4966 nativeTextInputMotionUp(x, y); 4967 } 4968 4969 /*package*/ void shortPressOnTextField() { 4970 if (inEditingMode()) { 4971 View v = mWebTextView; 4972 int x = viewToContentX((v.getLeft() + v.getRight()) >> 1); 4973 int y = viewToContentY((v.getTop() + v.getBottom()) >> 1); 4974 displaySoftKeyboard(true); 4975 nativeTextInputMotionUp(x, y); 4976 } 4977 } 4978 4979 private void doShortPress() { 4980 if (mNativeClass == 0) { 4981 return; 4982 } 4983 switchOutDrawHistory(); 4984 // mLastTouchX and mLastTouchY are the point in the current viewport 4985 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4986 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4987 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 4988 if (mLogEvent) { 4989 Checkin.updateStats(mContext.getContentResolver(), 4990 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 4991 } 4992 } 4993 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 4994 playSoundEffect(SoundEffectConstants.CLICK); 4995 } 4996 } 4997 4998 // Rule for double tap: 4999 // 1. if the current scale is not same as the text wrap scale and layout 5000 // algorithm is NARROW_COLUMNS, fit to column; 5001 // 2. if the current state is not overview mode, change to overview mode; 5002 // 3. if the current state is overview mode, change to default scale. 5003 private void doDoubleTap() { 5004 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5005 return; 5006 } 5007 mZoomCenterX = mLastTouchX; 5008 mZoomCenterY = mLastTouchY; 5009 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5010 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5011 WebSettings settings = getSettings(); 5012 // remove the zoom control after double tap 5013 if (settings.getBuiltInZoomControls()) { 5014 if (mZoomButtonsController.isVisible()) { 5015 mZoomButtonsController.setVisible(false); 5016 } 5017 } else { 5018 if (mZoomControlRunnable != null) { 5019 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5020 } 5021 if (mZoomControls != null) { 5022 mZoomControls.hide(); 5023 } 5024 } 5025 settings.setDoubleTapToastCount(0); 5026 boolean zoomToDefault = false; 5027 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5028 && (Math.abs(mActualScale - mTextWrapScale) >= 0.01f)) { 5029 setNewZoomScale(mActualScale, true, true); 5030 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5031 if (Math.abs(mActualScale - overviewScale) < 0.01f) { 5032 mInZoomOverview = true; 5033 } 5034 } else if (!mInZoomOverview) { 5035 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5036 if (Math.abs(mActualScale - newScale) >= 0.01f) { 5037 mInZoomOverview = true; 5038 // Force the titlebar fully reveal in overview mode 5039 if (mScrollY < getTitleHeight()) mScrollY = 0; 5040 zoomWithPreview(newScale); 5041 } else if (Math.abs(mActualScale - mDefaultScale) >= 0.01f) { 5042 zoomToDefault = true; 5043 } 5044 } else { 5045 zoomToDefault = true; 5046 } 5047 if (zoomToDefault) { 5048 mInZoomOverview = false; 5049 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5050 if (left != NO_LEFTEDGE) { 5051 // add a 5pt padding to the left edge. 5052 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5053 - mScrollX; 5054 // Re-calculate the zoom center so that the new scroll x will be 5055 // on the left edge. 5056 if (viewLeft > 0) { 5057 mZoomCenterX = viewLeft * mDefaultScale 5058 / (mDefaultScale - mActualScale); 5059 } else { 5060 scrollBy(viewLeft, 0); 5061 mZoomCenterX = 0; 5062 } 5063 } 5064 zoomWithPreview(mDefaultScale); 5065 } 5066 } 5067 5068 // Called by JNI to handle a touch on a node representing an email address, 5069 // address, or phone number 5070 private void overrideLoading(String url) { 5071 mCallbackProxy.uiOverrideUrlLoading(url); 5072 } 5073 5074 // called by JNI 5075 private void sendPluginState(int state) { 5076 WebViewCore.PluginStateData psd = new WebViewCore.PluginStateData(); 5077 psd.mFrame = nativeCursorFramePointer(); 5078 psd.mNode = nativeCursorNodePointer(); 5079 psd.mState = state; 5080 mWebViewCore.sendMessage(EventHub.PLUGIN_STATE, psd); 5081 } 5082 5083 @Override 5084 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5085 boolean result = false; 5086 if (inEditingMode()) { 5087 result = mWebTextView.requestFocus(direction, 5088 previouslyFocusedRect); 5089 } else { 5090 result = super.requestFocus(direction, previouslyFocusedRect); 5091 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5092 // For cases such as GMail, where we gain focus from a direction, 5093 // we want to move to the first available link. 5094 // FIXME: If there are no visible links, we may not want to 5095 int fakeKeyDirection = 0; 5096 switch(direction) { 5097 case View.FOCUS_UP: 5098 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5099 break; 5100 case View.FOCUS_DOWN: 5101 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5102 break; 5103 case View.FOCUS_LEFT: 5104 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5105 break; 5106 case View.FOCUS_RIGHT: 5107 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5108 break; 5109 default: 5110 return result; 5111 } 5112 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5113 navHandledKey(fakeKeyDirection, 1, true, 0, true); 5114 } 5115 } 5116 } 5117 return result; 5118 } 5119 5120 @Override 5121 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5122 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5123 5124 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5125 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5126 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5127 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5128 5129 int measuredHeight = heightSize; 5130 int measuredWidth = widthSize; 5131 5132 // Grab the content size from WebViewCore. 5133 int contentHeight = contentToViewDimension(mContentHeight); 5134 int contentWidth = contentToViewDimension(mContentWidth); 5135 5136// Log.d(LOGTAG, "------- measure " + heightMode); 5137 5138 if (heightMode != MeasureSpec.EXACTLY) { 5139 mHeightCanMeasure = true; 5140 measuredHeight = contentHeight; 5141 if (heightMode == MeasureSpec.AT_MOST) { 5142 // If we are larger than the AT_MOST height, then our height can 5143 // no longer be measured and we should scroll internally. 5144 if (measuredHeight > heightSize) { 5145 measuredHeight = heightSize; 5146 mHeightCanMeasure = false; 5147 } 5148 } 5149 } else { 5150 mHeightCanMeasure = false; 5151 } 5152 if (mNativeClass != 0) { 5153 nativeSetHeightCanMeasure(mHeightCanMeasure); 5154 } 5155 // For the width, always use the given size unless unspecified. 5156 if (widthMode == MeasureSpec.UNSPECIFIED) { 5157 mWidthCanMeasure = true; 5158 measuredWidth = contentWidth; 5159 } else { 5160 mWidthCanMeasure = false; 5161 } 5162 5163 synchronized (this) { 5164 setMeasuredDimension(measuredWidth, measuredHeight); 5165 } 5166 } 5167 5168 @Override 5169 public boolean requestChildRectangleOnScreen(View child, 5170 Rect rect, 5171 boolean immediate) { 5172 rect.offset(child.getLeft() - child.getScrollX(), 5173 child.getTop() - child.getScrollY()); 5174 5175 int height = getViewHeightWithTitle(); 5176 int screenTop = mScrollY; 5177 int screenBottom = screenTop + height; 5178 5179 int scrollYDelta = 0; 5180 5181 if (rect.bottom > screenBottom) { 5182 int oneThirdOfScreenHeight = height / 3; 5183 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5184 // If the rectangle is too tall to fit in the bottom two thirds 5185 // of the screen, place it at the top. 5186 scrollYDelta = rect.top - screenTop; 5187 } else { 5188 // If the rectangle will still fit on screen, we want its 5189 // top to be in the top third of the screen. 5190 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5191 } 5192 } else if (rect.top < screenTop) { 5193 scrollYDelta = rect.top - screenTop; 5194 } 5195 5196 int width = getWidth() - getVerticalScrollbarWidth(); 5197 int screenLeft = mScrollX; 5198 int screenRight = screenLeft + width; 5199 5200 int scrollXDelta = 0; 5201 5202 if (rect.right > screenRight && rect.left > screenLeft) { 5203 if (rect.width() > width) { 5204 scrollXDelta += (rect.left - screenLeft); 5205 } else { 5206 scrollXDelta += (rect.right - screenRight); 5207 } 5208 } else if (rect.left < screenLeft) { 5209 scrollXDelta -= (screenLeft - rect.left); 5210 } 5211 5212 if ((scrollYDelta | scrollXDelta) != 0) { 5213 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 5214 } 5215 5216 return false; 5217 } 5218 5219 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 5220 String replace, int newStart, int newEnd) { 5221 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 5222 arg.mReplace = replace; 5223 arg.mNewStart = newStart; 5224 arg.mNewEnd = newEnd; 5225 mTextGeneration++; 5226 arg.mTextGeneration = mTextGeneration; 5227 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 5228 } 5229 5230 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 5231 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 5232 mWebViewCore.sendMessage(EventHub.CLICK); 5233 if (mWebTextView.mOkayForFocusNotToMatch) { 5234 int select = nativeFocusCandidateIsTextField() ? 5235 nativeFocusCandidateMaxLength() : 0; 5236 setSelection(select, select); 5237 } 5238 } 5239 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 5240 arg.mEvent = event; 5241 arg.mCurrentText = currentText; 5242 // Increase our text generation number, and pass it to webcore thread 5243 mTextGeneration++; 5244 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 5245 // WebKit's document state is not saved until about to leave the page. 5246 // To make sure the host application, like Browser, has the up to date 5247 // document state when it goes to background, we force to save the 5248 // document state. 5249 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 5250 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 5251 cursorData(), 1000); 5252 } 5253 5254 /* package */ WebViewCore getWebViewCore() { 5255 return mWebViewCore; 5256 } 5257 5258 //------------------------------------------------------------------------- 5259 // Methods can be called from a separate thread, like WebViewCore 5260 // If it needs to call the View system, it has to send message. 5261 //------------------------------------------------------------------------- 5262 5263 /** 5264 * General handler to receive message coming from webkit thread 5265 */ 5266 class PrivateHandler extends Handler { 5267 @Override 5268 public void handleMessage(Message msg) { 5269 if (DebugFlags.WEB_VIEW) { 5270 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD 5271 || msg.what > SHOW_RECT_MSG_ID ? Integer 5272 .toString(msg.what) : HandlerDebugString[msg.what 5273 - REMEMBER_PASSWORD]); 5274 } 5275 if (mWebViewCore == null) { 5276 // after WebView's destroy() is called, skip handling messages. 5277 return; 5278 } 5279 switch (msg.what) { 5280 case REMEMBER_PASSWORD: { 5281 mDatabase.setUsernamePassword( 5282 msg.getData().getString("host"), 5283 msg.getData().getString("username"), 5284 msg.getData().getString("password")); 5285 ((Message) msg.obj).sendToTarget(); 5286 break; 5287 } 5288 case NEVER_REMEMBER_PASSWORD: { 5289 mDatabase.setUsernamePassword( 5290 msg.getData().getString("host"), null, null); 5291 ((Message) msg.obj).sendToTarget(); 5292 break; 5293 } 5294 case SWITCH_TO_SHORTPRESS: { 5295 // if mPreventDrag is not confirmed, treat it as no so that 5296 // it won't block panning the page. 5297 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5298 mPreventDrag = PREVENT_DRAG_NO; 5299 } 5300 if (mTouchMode == TOUCH_INIT_MODE) { 5301 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 5302 updateSelection(); 5303 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5304 mTouchMode = TOUCH_DONE_MODE; 5305 } 5306 break; 5307 } 5308 case SWITCH_TO_LONGPRESS: { 5309 if (mPreventDrag == PREVENT_DRAG_NO) { 5310 mTouchMode = TOUCH_DONE_MODE; 5311 performLongClick(); 5312 rebuildWebTextView(); 5313 } 5314 break; 5315 } 5316 case RELEASE_SINGLE_TAP: { 5317 if (mPreventDrag == PREVENT_DRAG_NO) { 5318 mTouchMode = TOUCH_DONE_MODE; 5319 doShortPress(); 5320 } 5321 break; 5322 } 5323 case SCROLL_BY_MSG_ID: 5324 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 5325 break; 5326 case SYNC_SCROLL_TO_MSG_ID: 5327 if (mUserScroll) { 5328 // if user has scrolled explicitly, don't sync the 5329 // scroll position any more 5330 mUserScroll = false; 5331 break; 5332 } 5333 // fall through 5334 case SCROLL_TO_MSG_ID: 5335 if (setContentScrollTo(msg.arg1, msg.arg2)) { 5336 // if we can't scroll to the exact position due to pin, 5337 // send a message to WebCore to re-scroll when we get a 5338 // new picture 5339 mUserScroll = false; 5340 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 5341 msg.arg1, msg.arg2); 5342 } 5343 break; 5344 case SPAWN_SCROLL_TO_MSG_ID: 5345 spawnContentScrollTo(msg.arg1, msg.arg2); 5346 break; 5347 case UPDATE_ZOOM_RANGE: { 5348 WebViewCore.RestoreState restoreState 5349 = (WebViewCore.RestoreState) msg.obj; 5350 // mScrollX contains the new minPrefWidth 5351 updateZoomRange(restoreState, getViewWidth(), 5352 restoreState.mScrollX, false); 5353 break; 5354 } 5355 case NEW_PICTURE_MSG_ID: { 5356 WebSettings settings = mWebViewCore.getSettings(); 5357 // called for new content 5358 final int viewWidth = getViewWidth(); 5359 final WebViewCore.DrawData draw = 5360 (WebViewCore.DrawData) msg.obj; 5361 final Point viewSize = draw.mViewPoint; 5362 boolean useWideViewport = settings.getUseWideViewPort(); 5363 WebViewCore.RestoreState restoreState = draw.mRestoreState; 5364 if (restoreState != null) { 5365 mInZoomOverview = false; 5366 updateZoomRange(restoreState, viewSize.x, 5367 draw.mMinPrefWidth, true); 5368 if (mInitialScaleInPercent > 0) { 5369 setNewZoomScale(mInitialScaleInPercent / 100.0f, 5370 mInitialScaleInPercent != mTextWrapScale * 100, 5371 false); 5372 } else if (restoreState.mViewScale > 0) { 5373 mTextWrapScale = restoreState.mTextWrapScale; 5374 setNewZoomScale(restoreState.mViewScale, false, 5375 false); 5376 } else { 5377 mInZoomOverview = useWideViewport 5378 && settings.getLoadWithOverviewMode(); 5379 float scale; 5380 if (mInZoomOverview) { 5381 scale = (float) viewWidth 5382 / WebViewCore.DEFAULT_VIEWPORT_WIDTH; 5383 } else { 5384 scale = restoreState.mTextWrapScale; 5385 } 5386 setNewZoomScale(scale, Math.abs(scale 5387 - mTextWrapScale) >= 0.01f, false); 5388 } 5389 setContentScrollTo(restoreState.mScrollX, 5390 restoreState.mScrollY); 5391 // As we are on a new page, remove the WebTextView. This 5392 // is necessary for page loads driven by webkit, and in 5393 // particular when the user was on a password field, so 5394 // the WebTextView was visible. 5395 clearTextEntry(); 5396 } 5397 // We update the layout (i.e. request a layout from the 5398 // view system) if the last view size that we sent to 5399 // WebCore matches the view size of the picture we just 5400 // received in the fixed dimension. 5401 final boolean updateLayout = viewSize.x == mLastWidthSent 5402 && viewSize.y == mLastHeightSent; 5403 recordNewContentSize(draw.mWidthHeight.x, 5404 draw.mWidthHeight.y 5405 + (mFindIsUp ? mFindHeight : 0), updateLayout); 5406 if (DebugFlags.WEB_VIEW) { 5407 Rect b = draw.mInvalRegion.getBounds(); 5408 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5409 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5410 } 5411 invalidateContentRect(draw.mInvalRegion.getBounds()); 5412 if (mPictureListener != null) { 5413 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5414 } 5415 if (useWideViewport) { 5416 mZoomOverviewWidth = Math.max( 5417 (int) (viewWidth / mDefaultScale), Math.max( 5418 draw.mMinPrefWidth, draw.mViewPoint.x)); 5419 } 5420 if (!mMinZoomScaleFixed) { 5421 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5422 } 5423 if (!mDrawHistory && mInZoomOverview) { 5424 // fit the content width to the current view. Ignore 5425 // the rounding error case. 5426 if (Math.abs((viewWidth * mInvActualScale) 5427 - mZoomOverviewWidth) > 1) { 5428 setNewZoomScale((float) viewWidth 5429 / mZoomOverviewWidth, Math.abs(mActualScale 5430 - mTextWrapScale) < 0.01f, false); 5431 } 5432 } 5433 break; 5434 } 5435 case WEBCORE_INITIALIZED_MSG_ID: 5436 // nativeCreate sets mNativeClass to a non-zero value 5437 nativeCreate(msg.arg1); 5438 break; 5439 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5440 // Make sure that the textfield is currently focused 5441 // and representing the same node as the pointer. 5442 if (inEditingMode() && 5443 mWebTextView.isSameTextField(msg.arg1)) { 5444 if (msg.getData().getBoolean("password")) { 5445 Spannable text = (Spannable) mWebTextView.getText(); 5446 int start = Selection.getSelectionStart(text); 5447 int end = Selection.getSelectionEnd(text); 5448 mWebTextView.setInPassword(true); 5449 // Restore the selection, which may have been 5450 // ruined by setInPassword. 5451 Spannable pword = 5452 (Spannable) mWebTextView.getText(); 5453 Selection.setSelection(pword, start, end); 5454 // If the text entry has created more events, ignore 5455 // this one. 5456 } else if (msg.arg2 == mTextGeneration) { 5457 mWebTextView.setTextAndKeepSelection( 5458 (String) msg.obj); 5459 } 5460 } 5461 break; 5462 case UPDATE_TEXT_SELECTION_MSG_ID: 5463 if (inEditingMode() 5464 && mWebTextView.isSameTextField(msg.arg1) 5465 && msg.arg2 == mTextGeneration) { 5466 WebViewCore.TextSelectionData tData 5467 = (WebViewCore.TextSelectionData) msg.obj; 5468 mWebTextView.setSelectionFromWebKit(tData.mStart, 5469 tData.mEnd); 5470 } 5471 break; 5472 case MOVE_OUT_OF_PLUGIN: 5473 if (nativePluginEatsNavKey()) { 5474 navHandledKey(msg.arg1, 1, false, 0, true); 5475 } 5476 break; 5477 case UPDATE_TEXT_ENTRY_MSG_ID: 5478 // this is sent after finishing resize in WebViewCore. Make 5479 // sure the text edit box is still on the screen. 5480 if (inEditingMode() && nativeCursorIsTextInput()) { 5481 mWebTextView.bringIntoView(); 5482 rebuildWebTextView(); 5483 } 5484 break; 5485 case CLEAR_TEXT_ENTRY: 5486 clearTextEntry(); 5487 break; 5488 case INVAL_RECT_MSG_ID: { 5489 Rect r = (Rect)msg.obj; 5490 if (r == null) { 5491 invalidate(); 5492 } else { 5493 // we need to scale r from content into view coords, 5494 // which viewInvalidate() does for us 5495 viewInvalidate(r.left, r.top, r.right, r.bottom); 5496 } 5497 break; 5498 } 5499 case REQUEST_FORM_DATA: 5500 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5501 if (mWebTextView.isSameTextField(msg.arg1)) { 5502 mWebTextView.setAdapterCustom(adapter); 5503 } 5504 break; 5505 case UPDATE_CLIPBOARD: 5506 String str = (String) msg.obj; 5507 if (DebugFlags.WEB_VIEW) { 5508 Log.v(LOGTAG, "UPDATE_CLIPBOARD " + str); 5509 } 5510 try { 5511 IClipboard clip = IClipboard.Stub.asInterface( 5512 ServiceManager.getService("clipboard")); 5513 clip.setClipboardText(str); 5514 } catch (android.os.RemoteException e) { 5515 Log.e(LOGTAG, "Clipboard failed", e); 5516 } 5517 break; 5518 case RESUME_WEBCORE_UPDATE: 5519 WebViewCore.resumeUpdate(mWebViewCore); 5520 break; 5521 5522 case LONG_PRESS_CENTER: 5523 // as this is shared by keydown and trackballdown, reset all 5524 // the states 5525 mGotCenterDown = false; 5526 mTrackballDown = false; 5527 // LONG_PRESS_CENTER is sent as a delayed message. If we 5528 // switch to windows overview, the WebView will be 5529 // temporarily removed from the view system. In that case, 5530 // do nothing. 5531 if (getParent() != null) { 5532 performLongClick(); 5533 } 5534 break; 5535 5536 case WEBCORE_NEED_TOUCH_EVENTS: 5537 mForwardTouchEvents = (msg.arg1 != 0); 5538 break; 5539 5540 case PREVENT_TOUCH_ID: 5541 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5542 // dont override if mPreventDrag has been set to no due 5543 // to time out 5544 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5545 mPreventDrag = msg.arg2 == 1 ? PREVENT_DRAG_YES 5546 : PREVENT_DRAG_NO; 5547 if (mPreventDrag == PREVENT_DRAG_YES) { 5548 mTouchMode = TOUCH_DONE_MODE; 5549 } 5550 } 5551 } 5552 break; 5553 5554 case REQUEST_KEYBOARD: 5555 if (msg.arg1 == 0) { 5556 hideSoftKeyboard(); 5557 } else { 5558 displaySoftKeyboard(false); 5559 } 5560 break; 5561 5562 case SHOW_RECT_MSG_ID: 5563 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 5564 int x = mScrollX; 5565 int left = contentToViewDimension(data.mLeft); 5566 int width = contentToViewDimension(data.mWidth); 5567 int maxWidth = contentToViewDimension(data.mContentWidth); 5568 int viewWidth = getViewWidth(); 5569 if (width < viewWidth) { 5570 // center align 5571 x += left + width / 2 - mScrollX - viewWidth / 2; 5572 } else { 5573 x += (int) (left + data.mXPercentInDoc * width 5574 - mScrollX - data.mXPercentInView * viewWidth); 5575 } 5576 // use the passing content width to cap x as the current 5577 // mContentWidth may not be updated yet 5578 x = Math.max(0, 5579 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 5580 int y = mScrollY; 5581 int top = contentToViewDimension(data.mTop); 5582 int height = contentToViewDimension(data.mHeight); 5583 int maxHeight = contentToViewDimension(data.mContentHeight); 5584 int viewHeight = getViewHeight(); 5585 if (height < viewHeight) { 5586 // middle align 5587 y += top + height / 2 - mScrollY - viewHeight / 2; 5588 } else { 5589 y += (int) (top + data.mYPercentInDoc * height 5590 - mScrollY - data.mYPercentInView * viewHeight); 5591 } 5592 // use the passing content height to cap y as the current 5593 // mContentHeight may not be updated yet 5594 y = Math.max(0, 5595 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 5596 scrollTo(x, y); 5597 break; 5598 5599 default: 5600 super.handleMessage(msg); 5601 break; 5602 } 5603 } 5604 } 5605 5606 // Class used to use a dropdown for a <select> element 5607 private class InvokeListBox implements Runnable { 5608 // Whether the listbox allows multiple selection. 5609 private boolean mMultiple; 5610 // Passed in to a list with multiple selection to tell 5611 // which items are selected. 5612 private int[] mSelectedArray; 5613 // Passed in to a list with single selection to tell 5614 // where the initial selection is. 5615 private int mSelection; 5616 5617 private Container[] mContainers; 5618 5619 // Need these to provide stable ids to my ArrayAdapter, 5620 // which normally does not have stable ids. (Bug 1250098) 5621 private class Container extends Object { 5622 String mString; 5623 boolean mEnabled; 5624 int mId; 5625 5626 public String toString() { 5627 return mString; 5628 } 5629 } 5630 5631 /** 5632 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 5633 * and allow filtering. 5634 */ 5635 private class MyArrayListAdapter extends ArrayAdapter<Container> { 5636 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 5637 super(context, 5638 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 5639 com.android.internal.R.layout.select_dialog_singlechoice, 5640 objects); 5641 } 5642 5643 @Override 5644 public boolean hasStableIds() { 5645 // AdapterView's onChanged method uses this to determine whether 5646 // to restore the old state. Return false so that the old (out 5647 // of date) state does not replace the new, valid state. 5648 return false; 5649 } 5650 5651 private Container item(int position) { 5652 if (position < 0 || position >= getCount()) { 5653 return null; 5654 } 5655 return (Container) getItem(position); 5656 } 5657 5658 @Override 5659 public long getItemId(int position) { 5660 Container item = item(position); 5661 if (item == null) { 5662 return -1; 5663 } 5664 return item.mId; 5665 } 5666 5667 @Override 5668 public boolean areAllItemsEnabled() { 5669 return false; 5670 } 5671 5672 @Override 5673 public boolean isEnabled(int position) { 5674 Container item = item(position); 5675 if (item == null) { 5676 return false; 5677 } 5678 return item.mEnabled; 5679 } 5680 } 5681 5682 private InvokeListBox(String[] array, 5683 boolean[] enabled, int[] selected) { 5684 mMultiple = true; 5685 mSelectedArray = selected; 5686 5687 int length = array.length; 5688 mContainers = new Container[length]; 5689 for (int i = 0; i < length; i++) { 5690 mContainers[i] = new Container(); 5691 mContainers[i].mString = array[i]; 5692 mContainers[i].mEnabled = enabled[i]; 5693 mContainers[i].mId = i; 5694 } 5695 } 5696 5697 private InvokeListBox(String[] array, boolean[] enabled, int 5698 selection) { 5699 mSelection = selection; 5700 mMultiple = false; 5701 5702 int length = array.length; 5703 mContainers = new Container[length]; 5704 for (int i = 0; i < length; i++) { 5705 mContainers[i] = new Container(); 5706 mContainers[i].mString = array[i]; 5707 mContainers[i].mEnabled = enabled[i]; 5708 mContainers[i].mId = i; 5709 } 5710 } 5711 5712 /* 5713 * Whenever the data set changes due to filtering, this class ensures 5714 * that the checked item remains checked. 5715 */ 5716 private class SingleDataSetObserver extends DataSetObserver { 5717 private long mCheckedId; 5718 private ListView mListView; 5719 private Adapter mAdapter; 5720 5721 /* 5722 * Create a new observer. 5723 * @param id The ID of the item to keep checked. 5724 * @param l ListView for getting and clearing the checked states 5725 * @param a Adapter for getting the IDs 5726 */ 5727 public SingleDataSetObserver(long id, ListView l, Adapter a) { 5728 mCheckedId = id; 5729 mListView = l; 5730 mAdapter = a; 5731 } 5732 5733 public void onChanged() { 5734 // The filter may have changed which item is checked. Find the 5735 // item that the ListView thinks is checked. 5736 int position = mListView.getCheckedItemPosition(); 5737 long id = mAdapter.getItemId(position); 5738 if (mCheckedId != id) { 5739 // Clear the ListView's idea of the checked item, since 5740 // it is incorrect 5741 mListView.clearChoices(); 5742 // Search for mCheckedId. If it is in the filtered list, 5743 // mark it as checked 5744 int count = mAdapter.getCount(); 5745 for (int i = 0; i < count; i++) { 5746 if (mAdapter.getItemId(i) == mCheckedId) { 5747 mListView.setItemChecked(i, true); 5748 break; 5749 } 5750 } 5751 } 5752 } 5753 5754 public void onInvalidate() {} 5755 } 5756 5757 public void run() { 5758 final ListView listView = (ListView) LayoutInflater.from(mContext) 5759 .inflate(com.android.internal.R.layout.select_dialog, null); 5760 final MyArrayListAdapter adapter = new 5761 MyArrayListAdapter(mContext, mContainers, mMultiple); 5762 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 5763 .setView(listView).setCancelable(true) 5764 .setInverseBackgroundForced(true); 5765 5766 if (mMultiple) { 5767 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 5768 public void onClick(DialogInterface dialog, int which) { 5769 mWebViewCore.sendMessage( 5770 EventHub.LISTBOX_CHOICES, 5771 adapter.getCount(), 0, 5772 listView.getCheckedItemPositions()); 5773 }}); 5774 b.setNegativeButton(android.R.string.cancel, 5775 new DialogInterface.OnClickListener() { 5776 public void onClick(DialogInterface dialog, int which) { 5777 mWebViewCore.sendMessage( 5778 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5779 }}); 5780 } 5781 final AlertDialog dialog = b.create(); 5782 listView.setAdapter(adapter); 5783 listView.setFocusableInTouchMode(true); 5784 // There is a bug (1250103) where the checks in a ListView with 5785 // multiple items selected are associated with the positions, not 5786 // the ids, so the items do not properly retain their checks when 5787 // filtered. Do not allow filtering on multiple lists until 5788 // that bug is fixed. 5789 5790 listView.setTextFilterEnabled(!mMultiple); 5791 if (mMultiple) { 5792 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 5793 int length = mSelectedArray.length; 5794 for (int i = 0; i < length; i++) { 5795 listView.setItemChecked(mSelectedArray[i], true); 5796 } 5797 } else { 5798 listView.setOnItemClickListener(new OnItemClickListener() { 5799 public void onItemClick(AdapterView parent, View v, 5800 int position, long id) { 5801 mWebViewCore.sendMessage( 5802 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 5803 dialog.dismiss(); 5804 } 5805 }); 5806 if (mSelection != -1) { 5807 listView.setSelection(mSelection); 5808 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 5809 listView.setItemChecked(mSelection, true); 5810 DataSetObserver observer = new SingleDataSetObserver( 5811 adapter.getItemId(mSelection), listView, adapter); 5812 adapter.registerDataSetObserver(observer); 5813 } 5814 } 5815 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 5816 public void onCancel(DialogInterface dialog) { 5817 mWebViewCore.sendMessage( 5818 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5819 } 5820 }); 5821 dialog.show(); 5822 } 5823 } 5824 5825 /* 5826 * Request a dropdown menu for a listbox with multiple selection. 5827 * 5828 * @param array Labels for the listbox. 5829 * @param enabledArray Which positions are enabled. 5830 * @param selectedArray Which positions are initally selected. 5831 */ 5832 void requestListBox(String[] array, boolean[]enabledArray, int[] 5833 selectedArray) { 5834 mPrivateHandler.post( 5835 new InvokeListBox(array, enabledArray, selectedArray)); 5836 } 5837 5838 private void updateZoomRange(WebViewCore.RestoreState restoreState, 5839 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 5840 if (restoreState.mMinScale == 0) { 5841 if (restoreState.mMobileSite) { 5842 if (minPrefWidth > Math.max(0, viewWidth)) { 5843 mMinZoomScale = (float) viewWidth / minPrefWidth; 5844 mMinZoomScaleFixed = false; 5845 if (updateZoomOverview) { 5846 WebSettings settings = getSettings(); 5847 mInZoomOverview = settings.getUseWideViewPort() && 5848 settings.getLoadWithOverviewMode(); 5849 } 5850 } else { 5851 mMinZoomScale = restoreState.mDefaultScale; 5852 mMinZoomScaleFixed = true; 5853 } 5854 } else { 5855 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 5856 mMinZoomScaleFixed = false; 5857 } 5858 } else { 5859 mMinZoomScale = restoreState.mMinScale; 5860 mMinZoomScaleFixed = true; 5861 } 5862 if (restoreState.mMaxScale == 0) { 5863 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 5864 } else { 5865 mMaxZoomScale = restoreState.mMaxScale; 5866 } 5867 } 5868 5869 /* 5870 * Request a dropdown menu for a listbox with single selection or a single 5871 * <select> element. 5872 * 5873 * @param array Labels for the listbox. 5874 * @param enabledArray Which positions are enabled. 5875 * @param selection Which position is initally selected. 5876 */ 5877 void requestListBox(String[] array, boolean[]enabledArray, int selection) { 5878 mPrivateHandler.post( 5879 new InvokeListBox(array, enabledArray, selection)); 5880 } 5881 5882 // called by JNI 5883 private void sendMoveMouse(int frame, int node, int x, int y) { 5884 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 5885 new WebViewCore.CursorData(frame, node, x, y)); 5886 } 5887 5888 /* 5889 * Send a mouse move event to the webcore thread. 5890 * 5891 * @param removeFocus Pass true if the "mouse" cursor is now over a node 5892 * which wants key events, but it is not the focus. This 5893 * will make the visual appear as though nothing is in 5894 * focus. Remove the WebTextView, if present, and stop 5895 * drawing the blinking caret. 5896 * called by JNI 5897 */ 5898 private void sendMoveMouseIfLatest(boolean removeFocus) { 5899 if (removeFocus) { 5900 clearTextEntry(); 5901 setFocusControllerInactive(); 5902 } 5903 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 5904 cursorData()); 5905 } 5906 5907 // called by JNI 5908 private void sendMotionUp(int touchGeneration, 5909 int frame, int node, int x, int y) { 5910 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5911 touchUpData.mMoveGeneration = touchGeneration; 5912 touchUpData.mFrame = frame; 5913 touchUpData.mNode = node; 5914 touchUpData.mX = x; 5915 touchUpData.mY = y; 5916 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5917 } 5918 5919 5920 private int getScaledMaxXScroll() { 5921 int width; 5922 if (mHeightCanMeasure == false) { 5923 width = getViewWidth() / 4; 5924 } else { 5925 Rect visRect = new Rect(); 5926 calcOurVisibleRect(visRect); 5927 width = visRect.width() / 2; 5928 } 5929 // FIXME the divisor should be retrieved from somewhere 5930 return viewToContentX(width); 5931 } 5932 5933 private int getScaledMaxYScroll() { 5934 int height; 5935 if (mHeightCanMeasure == false) { 5936 height = getViewHeight() / 4; 5937 } else { 5938 Rect visRect = new Rect(); 5939 calcOurVisibleRect(visRect); 5940 height = visRect.height() / 2; 5941 } 5942 // FIXME the divisor should be retrieved from somewhere 5943 // the closest thing today is hard-coded into ScrollView.java 5944 // (from ScrollView.java, line 363) int maxJump = height/2; 5945 return Math.round(height * mInvActualScale); 5946 } 5947 5948 /** 5949 * Called by JNI to invalidate view 5950 */ 5951 private void viewInvalidate() { 5952 invalidate(); 5953 } 5954 5955 // return true if the key was handled 5956 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 5957 long time, boolean ignorePlugin) { 5958 if (mNativeClass == 0) { 5959 return false; 5960 } 5961 if (ignorePlugin == false && nativePluginEatsNavKey()) { 5962 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 5963 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 5964 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 5965 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 5966 , 0, 0, 0); 5967 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5968 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5969 return true; 5970 } 5971 mLastCursorTime = time; 5972 mLastCursorBounds = nativeGetCursorRingBounds(); 5973 boolean keyHandled 5974 = nativeMoveCursor(keyCode, count, noScroll) == false; 5975 if (DebugFlags.WEB_VIEW) { 5976 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 5977 + " mLastCursorTime=" + mLastCursorTime 5978 + " handled=" + keyHandled); 5979 } 5980 if (keyHandled == false || mHeightCanMeasure == false) { 5981 return keyHandled; 5982 } 5983 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 5984 if (contentCursorRingBounds.isEmpty()) return keyHandled; 5985 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 5986 Rect visRect = new Rect(); 5987 calcOurVisibleRect(visRect); 5988 Rect outset = new Rect(visRect); 5989 int maxXScroll = visRect.width() / 2; 5990 int maxYScroll = visRect.height() / 2; 5991 outset.inset(-maxXScroll, -maxYScroll); 5992 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 5993 return keyHandled; 5994 } 5995 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 5996 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 5997 maxXScroll); 5998 if (maxH > 0) { 5999 pinScrollBy(maxH, 0, true, 0); 6000 } else { 6001 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 6002 -maxXScroll); 6003 if (maxH < 0) { 6004 pinScrollBy(maxH, 0, true, 0); 6005 } 6006 } 6007 if (mLastCursorBounds.isEmpty()) return keyHandled; 6008 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 6009 return keyHandled; 6010 } 6011 if (DebugFlags.WEB_VIEW) { 6012 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 6013 + contentCursorRingBounds); 6014 } 6015 requestRectangleOnScreen(viewCursorRingBounds); 6016 mUserScroll = true; 6017 return keyHandled; 6018 } 6019 6020 /** 6021 * Set the background color. It's white by default. Pass 6022 * zero to make the view transparent. 6023 * @param color the ARGB color described by Color.java 6024 */ 6025 public void setBackgroundColor(int color) { 6026 mBackgroundColor = color; 6027 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 6028 } 6029 6030 public void debugDump() { 6031 nativeDebugDump(); 6032 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 6033 } 6034 6035 /** 6036 * Update our cache with updatedText. 6037 * @param updatedText The new text to put in our cache. 6038 */ 6039 /* package */ void updateCachedTextfield(String updatedText) { 6040 // Also place our generation number so that when we look at the cache 6041 // we recognize that it is up to date. 6042 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 6043 } 6044 6045 /* package */ native void nativeClearCursor(); 6046 private native void nativeCreate(int ptr); 6047 private native int nativeCursorFramePointer(); 6048 private native Rect nativeCursorNodeBounds(); 6049 /* package */ native int nativeCursorNodePointer(); 6050 /* package */ native boolean nativeCursorMatchesFocus(); 6051 private native boolean nativeCursorIntersects(Rect visibleRect); 6052 private native boolean nativeCursorIsAnchor(); 6053 private native boolean nativeCursorIsPlugin(); 6054 private native boolean nativeCursorIsTextInput(); 6055 private native Point nativeCursorPosition(); 6056 private native String nativeCursorText(); 6057 /** 6058 * Returns true if the native cursor node says it wants to handle key events 6059 * (ala plugins). This can only be called if mNativeClass is non-zero! 6060 */ 6061 private native boolean nativeCursorWantsKeyEvents(); 6062 private native void nativeDebugDump(); 6063 private native void nativeDestroy(); 6064 private native void nativeDrawCursorRing(Canvas content); 6065 private native void nativeDrawMatches(Canvas canvas); 6066 private native void nativeDrawSelection(Canvas content, float scale, 6067 int offset, int x, int y, boolean extendSelection); 6068 private native void nativeDrawSelectionRegion(Canvas content); 6069 private native void nativeDumpDisplayTree(String urlOrNull); 6070 private native int nativeFindAll(String findLower, String findUpper); 6071 private native void nativeFindNext(boolean forward); 6072 private native boolean nativeFocusCandidateIsPassword(); 6073 private native boolean nativeFocusCandidateIsRtlText(); 6074 private native boolean nativeFocusCandidateIsTextField(); 6075 private native boolean nativeFocusCandidateIsTextInput(); 6076 private native int nativeFocusCandidateMaxLength(); 6077 /* package */ native String nativeFocusCandidateName(); 6078 private native Rect nativeFocusCandidateNodeBounds(); 6079 /* package */ native int nativeFocusCandidatePointer(); 6080 private native String nativeFocusCandidateText(); 6081 private native int nativeFocusCandidateTextSize(); 6082 /* package */ native int nativeFocusNodePointer(); 6083 private native Rect nativeGetCursorRingBounds(); 6084 private native Region nativeGetSelection(); 6085 private native boolean nativeHasCursorNode(); 6086 private native boolean nativeHasFocusNode(); 6087 private native void nativeHideCursor(); 6088 private native String nativeImageURI(int x, int y); 6089 private native void nativeInstrumentReport(); 6090 /* package */ native void nativeMoveCursorToNextTextInput(); 6091 // return true if the page has been scrolled 6092 private native boolean nativeMotionUp(int x, int y, int slop); 6093 // returns false if it handled the key 6094 private native boolean nativeMoveCursor(int keyCode, int count, 6095 boolean noScroll); 6096 private native int nativeMoveGeneration(); 6097 private native void nativeMoveSelection(int x, int y, 6098 boolean extendSelection); 6099 private native boolean nativePluginEatsNavKey(); 6100 // Like many other of our native methods, you must make sure that 6101 // mNativeClass is not null before calling this method. 6102 private native void nativeRecordButtons(boolean focused, 6103 boolean pressed, boolean invalidate); 6104 private native void nativeSelectBestAt(Rect rect); 6105 private native void nativeSetFindIsDown(); 6106 private native void nativeSetFollowedLink(boolean followed); 6107 private native void nativeSetHeightCanMeasure(boolean measure); 6108 // Returns a value corresponding to CachedFrame::ImeAction 6109 /* package */ native int nativeTextFieldAction(); 6110 /** 6111 * Perform a click on a currently focused text input. Since it is already 6112 * focused, there is no need to go through the nativeMotionUp code, which 6113 * may change the Cursor. 6114 */ 6115 private native void nativeTextInputMotionUp(int x, int y); 6116 private native int nativeTextGeneration(); 6117 // Never call this version except by updateCachedTextfield(String) - 6118 // we always want to pass in our generation number. 6119 private native void nativeUpdateCachedTextfield(String updatedText, 6120 int generation); 6121 private native void nativeUpdatePluginReceivesEvents(); 6122 // return NO_LEFTEDGE means failure. 6123 private static final int NO_LEFTEDGE = -1; 6124 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 6125} 6126