WebView.java revision 12bcbdc681c3195069f55bd9abda900da0886c70
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 static 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 MOVE_OUT_OF_PLUGIN = 19; 471 static final int CLEAR_TEXT_ENTRY = 20; 472 static final int UPDATE_TEXT_SELECTION_MSG_ID = 21; 473 static final int UPDATE_CLIPBOARD = 22; 474 static final int LONG_PRESS_CENTER = 23; 475 static final int PREVENT_TOUCH_ID = 24; 476 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 477 // obj=Rect in doc coordinates 478 static final int INVAL_RECT_MSG_ID = 26; 479 static final int REQUEST_KEYBOARD = 27; 480 static final int SHOW_RECT_MSG_ID = 28; 481 482 static final String[] HandlerDebugString = { 483 "REMEMBER_PASSWORD", // = 1; 484 "NEVER_REMEMBER_PASSWORD", // = 2; 485 "SWITCH_TO_SHORTPRESS", // = 3; 486 "SWITCH_TO_LONGPRESS", // = 4; 487 "RELEASE_SINGLE_TAP", // = 5; 488 "REQUEST_FORM_DATA", // = 6; 489 "SWITCH_TO_CLICK", // = 7; 490 "RESUME_WEBCORE_UPDATE", // = 8; 491 "9", 492 "SCROLL_TO_MSG_ID", // = 10; 493 "SCROLL_BY_MSG_ID", // = 11; 494 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 495 "SYNC_SCROLL_TO_MSG_ID", // = 13; 496 "NEW_PICTURE_MSG_ID", // = 14; 497 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 498 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 499 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 500 "18", // = 18; 501 "MOVE_OUT_OF_PLUGIN", // = 19; 502 "CLEAR_TEXT_ENTRY", // = 20; 503 "UPDATE_TEXT_SELECTION_MSG_ID", // = 21; 504 "UPDATE_CLIPBOARD", // = 22; 505 "LONG_PRESS_CENTER", // = 23; 506 "PREVENT_TOUCH_ID", // = 24; 507 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 508 "INVAL_RECT_MSG_ID", // = 26; 509 "REQUEST_KEYBOARD", // = 27; 510 "SHOW_RECT_MSG_ID" // = 28; 511 }; 512 513 // default scale limit. Depending on the display density 514 private static float DEFAULT_MAX_ZOOM_SCALE; 515 private static float DEFAULT_MIN_ZOOM_SCALE; 516 // scale limit, which can be set through viewport meta tag in the web page 517 private float mMaxZoomScale; 518 private float mMinZoomScale; 519 private boolean mMinZoomScaleFixed = true; 520 521 // initial scale in percent. 0 means using default. 522 private int mInitialScaleInPercent = 0; 523 524 // while in the zoom overview mode, the page's width is fully fit to the 525 // current window. The page is alive, in another words, you can click to 526 // follow the links. Double tap will toggle between zoom overview mode and 527 // the last zoom scale. 528 boolean mInZoomOverview = false; 529 530 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 531 // engadget always have wider mContentWidth no matter what viewport size is. 532 int mZoomOverviewWidth = WebViewCore.DEFAULT_VIEWPORT_WIDTH; 533 float mTextWrapScale; 534 535 // default scale. Depending on the display density. 536 static int DEFAULT_SCALE_PERCENT; 537 private float mDefaultScale; 538 539 // set to true temporarily while the zoom control is being dragged 540 private boolean mPreviewZoomOnly = false; 541 542 // computed scale and inverse, from mZoomWidth. 543 private float mActualScale; 544 private float mInvActualScale; 545 // if this is non-zero, it is used on drawing rather than mActualScale 546 private float mZoomScale; 547 private float mInvInitialZoomScale; 548 private float mInvFinalZoomScale; 549 private int mInitialScrollX; 550 private int mInitialScrollY; 551 private long mZoomStart; 552 private static final int ZOOM_ANIMATION_LENGTH = 500; 553 554 private boolean mUserScroll = false; 555 556 private int mSnapScrollMode = SNAP_NONE; 557 private static final int SNAP_NONE = 1; 558 private static final int SNAP_X = 2; 559 private static final int SNAP_Y = 3; 560 private static final int SNAP_X_LOCK = 4; 561 private static final int SNAP_Y_LOCK = 5; 562 private boolean mSnapPositive; 563 564 // Used to match key downs and key ups 565 private boolean mGotKeyDown; 566 567 /* package */ static boolean mLogEvent = true; 568 private static final int EVENT_LOG_ZOOM_LEVEL_CHANGE = 70101; 569 private static final int EVENT_LOG_DOUBLE_TAP_DURATION = 70102; 570 571 // for event log 572 private long mLastTouchUpTime = 0; 573 574 /** 575 * URI scheme for telephone number 576 */ 577 public static final String SCHEME_TEL = "tel:"; 578 /** 579 * URI scheme for email address 580 */ 581 public static final String SCHEME_MAILTO = "mailto:"; 582 /** 583 * URI scheme for map address 584 */ 585 public static final String SCHEME_GEO = "geo:0,0?q="; 586 587 private int mBackgroundColor = Color.WHITE; 588 589 // Used to notify listeners of a new picture. 590 private PictureListener mPictureListener; 591 /** 592 * Interface to listen for new pictures as they change. 593 */ 594 public interface PictureListener { 595 /** 596 * Notify the listener that the picture has changed. 597 * @param view The WebView that owns the picture. 598 * @param picture The new picture. 599 */ 600 public void onNewPicture(WebView view, Picture picture); 601 } 602 603 // FIXME: Want to make this public, but need to change the API file. 604 public /*static*/ class HitTestResult { 605 /** 606 * Default HitTestResult, where the target is unknown 607 */ 608 public static final int UNKNOWN_TYPE = 0; 609 /** 610 * HitTestResult for hitting a HTML::a tag 611 */ 612 public static final int ANCHOR_TYPE = 1; 613 /** 614 * HitTestResult for hitting a phone number 615 */ 616 public static final int PHONE_TYPE = 2; 617 /** 618 * HitTestResult for hitting a map address 619 */ 620 public static final int GEO_TYPE = 3; 621 /** 622 * HitTestResult for hitting an email address 623 */ 624 public static final int EMAIL_TYPE = 4; 625 /** 626 * HitTestResult for hitting an HTML::img tag 627 */ 628 public static final int IMAGE_TYPE = 5; 629 /** 630 * HitTestResult for hitting a HTML::a tag which contains HTML::img 631 */ 632 public static final int IMAGE_ANCHOR_TYPE = 6; 633 /** 634 * HitTestResult for hitting a HTML::a tag with src=http 635 */ 636 public static final int SRC_ANCHOR_TYPE = 7; 637 /** 638 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 639 */ 640 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 641 /** 642 * HitTestResult for hitting an edit text area 643 */ 644 public static final int EDIT_TEXT_TYPE = 9; 645 646 private int mType; 647 private String mExtra; 648 649 HitTestResult() { 650 mType = UNKNOWN_TYPE; 651 } 652 653 private void setType(int type) { 654 mType = type; 655 } 656 657 private void setExtra(String extra) { 658 mExtra = extra; 659 } 660 661 public int getType() { 662 return mType; 663 } 664 665 public String getExtra() { 666 return mExtra; 667 } 668 } 669 670 // The View containing the zoom controls 671 private ExtendedZoomControls mZoomControls; 672 private Runnable mZoomControlRunnable; 673 674 private ZoomButtonsController mZoomButtonsController; 675 676 // These keep track of the center point of the zoom. They are used to 677 // determine the point around which we should zoom. 678 private float mZoomCenterX; 679 private float mZoomCenterY; 680 681 private ZoomButtonsController.OnZoomListener mZoomListener = 682 new ZoomButtonsController.OnZoomListener() { 683 684 public void onVisibilityChanged(boolean visible) { 685 if (visible) { 686 switchOutDrawHistory(); 687 updateZoomButtonsEnabled(); 688 } 689 } 690 691 public void onZoom(boolean zoomIn) { 692 if (zoomIn) { 693 zoomIn(); 694 } else { 695 zoomOut(); 696 } 697 698 updateZoomButtonsEnabled(); 699 } 700 }; 701 702 /** 703 * Construct a new WebView with a Context object. 704 * @param context A Context object used to access application assets. 705 */ 706 public WebView(Context context) { 707 this(context, null); 708 } 709 710 /** 711 * Construct a new WebView with layout parameters. 712 * @param context A Context object used to access application assets. 713 * @param attrs An AttributeSet passed to our parent. 714 */ 715 public WebView(Context context, AttributeSet attrs) { 716 this(context, attrs, com.android.internal.R.attr.webViewStyle); 717 } 718 719 /** 720 * Construct a new WebView with layout parameters and a default style. 721 * @param context A Context object used to access application assets. 722 * @param attrs An AttributeSet passed to our parent. 723 * @param defStyle The default style resource ID. 724 */ 725 public WebView(Context context, AttributeSet attrs, int defStyle) { 726 this(context, attrs, defStyle, null); 727 } 728 729 /** 730 * Construct a new WebView with layout parameters, a default style and a set 731 * of custom Javscript interfaces to be added to the WebView at initialization 732 * time. This guraratees that these interfaces will be available when the JS 733 * context is initialized. 734 * @param context A Context object used to access application assets. 735 * @param attrs An AttributeSet passed to our parent. 736 * @param defStyle The default style resource ID. 737 * @param javascriptInterfaces is a Map of intareface names, as keys, and 738 * object implementing those interfaces, as values. 739 * @hide pending API council approval. 740 */ 741 protected WebView(Context context, AttributeSet attrs, int defStyle, 742 Map<String, Object> javascriptInterfaces) { 743 super(context, attrs, defStyle); 744 init(); 745 746 mCallbackProxy = new CallbackProxy(context, this); 747 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 748 mDatabase = WebViewDatabase.getInstance(context); 749 mScroller = new Scroller(context); 750 751 mViewManager = new ViewManager(this); 752 753 mZoomButtonsController = new ZoomButtonsController(this); 754 mZoomButtonsController.setOnZoomListener(mZoomListener); 755 // ZoomButtonsController positions the buttons at the bottom, but in 756 // the middle. Change their layout parameters so they appear on the 757 // right. 758 View controls = mZoomButtonsController.getZoomControls(); 759 ViewGroup.LayoutParams params = controls.getLayoutParams(); 760 if (params instanceof FrameLayout.LayoutParams) { 761 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 762 params; 763 frameParams.gravity = Gravity.RIGHT; 764 } 765 updateMultiTouchSupport(context); 766 } 767 768 void updateMultiTouchSupport(Context context) { 769 WebSettings settings = getSettings(); 770 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 771 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 772 && settings.supportZoom() && settings.getBuiltInZoomControls(); 773 if (mSupportMultiTouch && (mScaleDetector == null)) { 774 mScaleDetector = new ScaleGestureDetector(context, 775 new ScaleDetectorListener()); 776 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 777 mScaleDetector = null; 778 } 779 } 780 781 private void updateZoomButtonsEnabled() { 782 boolean canZoomIn = mActualScale < mMaxZoomScale; 783 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 784 if (!canZoomIn && !canZoomOut) { 785 // Hide the zoom in and out buttons, as well as the fit to page 786 // button, if the page cannot zoom 787 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 788 } else { 789 // Bring back the hidden zoom controls. 790 mZoomButtonsController.getZoomControls() 791 .setVisibility(View.VISIBLE); 792 // Set each one individually, as a page may be able to zoom in 793 // or out. 794 mZoomButtonsController.setZoomInEnabled(canZoomIn); 795 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 796 } 797 } 798 799 private void init() { 800 setWillNotDraw(false); 801 setFocusable(true); 802 setFocusableInTouchMode(true); 803 setClickable(true); 804 setLongClickable(true); 805 806 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 807 int slop = configuration.getScaledTouchSlop(); 808 mTouchSlopSquare = slop * slop; 809 mMinLockSnapReverseDistance = slop; 810 slop = configuration.getScaledDoubleTapSlop(); 811 mDoubleTapSlopSquare = slop * slop; 812 final float density = getContext().getResources().getDisplayMetrics().density; 813 // use one line height, 16 based on our current default font, for how 814 // far we allow a touch be away from the edge of a link 815 mNavSlop = (int) (16 * density); 816 // density adjusted scale factors 817 DEFAULT_SCALE_PERCENT = (int) (100 * density); 818 mDefaultScale = density; 819 mActualScale = density; 820 mInvActualScale = 1 / density; 821 mTextWrapScale = density; 822 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 823 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 824 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 825 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 826 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 827 } 828 829 /* package */void updateDefaultZoomDensity(int zoomDensity) { 830 final float density = getContext().getResources().getDisplayMetrics().density 831 * 100 / zoomDensity; 832 if (Math.abs(density - mDefaultScale) > 0.01) { 833 float scaleFactor = density / mDefaultScale; 834 // adjust the limits 835 mNavSlop = (int) (16 * density); 836 DEFAULT_SCALE_PERCENT = (int) (100 * density); 837 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 838 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 839 mDefaultScale = density; 840 mMaxZoomScale *= scaleFactor; 841 mMinZoomScale *= scaleFactor; 842 setNewZoomScale(mActualScale * scaleFactor, true, false); 843 } 844 } 845 846 /* package */ boolean onSavePassword(String schemePlusHost, String username, 847 String password, final Message resumeMsg) { 848 boolean rVal = false; 849 if (resumeMsg == null) { 850 // null resumeMsg implies saving password silently 851 mDatabase.setUsernamePassword(schemePlusHost, username, password); 852 } else { 853 final Message remember = mPrivateHandler.obtainMessage( 854 REMEMBER_PASSWORD); 855 remember.getData().putString("host", schemePlusHost); 856 remember.getData().putString("username", username); 857 remember.getData().putString("password", password); 858 remember.obj = resumeMsg; 859 860 final Message neverRemember = mPrivateHandler.obtainMessage( 861 NEVER_REMEMBER_PASSWORD); 862 neverRemember.getData().putString("host", schemePlusHost); 863 neverRemember.getData().putString("username", username); 864 neverRemember.getData().putString("password", password); 865 neverRemember.obj = resumeMsg; 866 867 new AlertDialog.Builder(getContext()) 868 .setTitle(com.android.internal.R.string.save_password_label) 869 .setMessage(com.android.internal.R.string.save_password_message) 870 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 871 new DialogInterface.OnClickListener() { 872 public void onClick(DialogInterface dialog, int which) { 873 resumeMsg.sendToTarget(); 874 } 875 }) 876 .setNeutralButton(com.android.internal.R.string.save_password_remember, 877 new DialogInterface.OnClickListener() { 878 public void onClick(DialogInterface dialog, int which) { 879 remember.sendToTarget(); 880 } 881 }) 882 .setNegativeButton(com.android.internal.R.string.save_password_never, 883 new DialogInterface.OnClickListener() { 884 public void onClick(DialogInterface dialog, int which) { 885 neverRemember.sendToTarget(); 886 } 887 }) 888 .setOnCancelListener(new OnCancelListener() { 889 public void onCancel(DialogInterface dialog) { 890 resumeMsg.sendToTarget(); 891 } 892 }).show(); 893 // Return true so that WebViewCore will pause while the dialog is 894 // up. 895 rVal = true; 896 } 897 return rVal; 898 } 899 900 @Override 901 public void setScrollBarStyle(int style) { 902 if (style == View.SCROLLBARS_INSIDE_INSET 903 || style == View.SCROLLBARS_OUTSIDE_INSET) { 904 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 905 } else { 906 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 907 } 908 super.setScrollBarStyle(style); 909 } 910 911 /** 912 * Specify whether the horizontal scrollbar has overlay style. 913 * @param overlay TRUE if horizontal scrollbar should have overlay style. 914 */ 915 public void setHorizontalScrollbarOverlay(boolean overlay) { 916 mOverlayHorizontalScrollbar = overlay; 917 } 918 919 /** 920 * Specify whether the vertical scrollbar has overlay style. 921 * @param overlay TRUE if vertical scrollbar should have overlay style. 922 */ 923 public void setVerticalScrollbarOverlay(boolean overlay) { 924 mOverlayVerticalScrollbar = overlay; 925 } 926 927 /** 928 * Return whether horizontal scrollbar has overlay style 929 * @return TRUE if horizontal scrollbar has overlay style. 930 */ 931 public boolean overlayHorizontalScrollbar() { 932 return mOverlayHorizontalScrollbar; 933 } 934 935 /** 936 * Return whether vertical scrollbar has overlay style 937 * @return TRUE if vertical scrollbar has overlay style. 938 */ 939 public boolean overlayVerticalScrollbar() { 940 return mOverlayVerticalScrollbar; 941 } 942 943 /* 944 * Return the width of the view where the content of WebView should render 945 * to. 946 * Note: this can be called from WebCoreThread. 947 */ 948 /* package */ int getViewWidth() { 949 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 950 return getWidth(); 951 } else { 952 return getWidth() - getVerticalScrollbarWidth(); 953 } 954 } 955 956 /* 957 * returns the height of the titlebarview (if any). Does not care about 958 * scrolling 959 */ 960 private int getTitleHeight() { 961 return mTitleBar != null ? mTitleBar.getHeight() : 0; 962 } 963 964 /* 965 * Return the amount of the titlebarview (if any) that is visible 966 */ 967 private int getVisibleTitleHeight() { 968 return Math.max(getTitleHeight() - mScrollY, 0); 969 } 970 971 /* 972 * Return the height of the view where the content of WebView should render 973 * to. Note that this excludes mTitleBar, if there is one. 974 * Note: this can be called from WebCoreThread. 975 */ 976 /* package */ int getViewHeight() { 977 return getViewHeightWithTitle() - getVisibleTitleHeight(); 978 } 979 980 private int getViewHeightWithTitle() { 981 int height = getHeight(); 982 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 983 height -= getHorizontalScrollbarHeight(); 984 } 985 return height; 986 } 987 988 /** 989 * @return The SSL certificate for the main top-level page or null if 990 * there is no certificate (the site is not secure). 991 */ 992 public SslCertificate getCertificate() { 993 return mCertificate; 994 } 995 996 /** 997 * Sets the SSL certificate for the main top-level page. 998 */ 999 public void setCertificate(SslCertificate certificate) { 1000 // here, the certificate can be null (if the site is not secure) 1001 mCertificate = certificate; 1002 } 1003 1004 //------------------------------------------------------------------------- 1005 // Methods called by activity 1006 //------------------------------------------------------------------------- 1007 1008 /** 1009 * Save the username and password for a particular host in the WebView's 1010 * internal database. 1011 * @param host The host that required the credentials. 1012 * @param username The username for the given host. 1013 * @param password The password for the given host. 1014 */ 1015 public void savePassword(String host, String username, String password) { 1016 mDatabase.setUsernamePassword(host, username, password); 1017 } 1018 1019 /** 1020 * Set the HTTP authentication credentials for a given host and realm. 1021 * 1022 * @param host The host for the credentials. 1023 * @param realm The realm for the credentials. 1024 * @param username The username for the password. If it is null, it means 1025 * password can't be saved. 1026 * @param password The password 1027 */ 1028 public void setHttpAuthUsernamePassword(String host, String realm, 1029 String username, String password) { 1030 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1031 } 1032 1033 /** 1034 * Retrieve the HTTP authentication username and password for a given 1035 * host & realm pair 1036 * 1037 * @param host The host for which the credentials apply. 1038 * @param realm The realm for which the credentials apply. 1039 * @return String[] if found, String[0] is username, which can be null and 1040 * String[1] is password. Return null if it can't find anything. 1041 */ 1042 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1043 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1044 } 1045 1046 /** 1047 * Destroy the internal state of the WebView. This method should be called 1048 * after the WebView has been removed from the view system. No other 1049 * methods may be called on a WebView after destroy. 1050 */ 1051 public void destroy() { 1052 clearTextEntry(); 1053 if (mWebViewCore != null) { 1054 // Set the handlers to null before destroying WebViewCore so no 1055 // more messages will be posted. 1056 mCallbackProxy.setWebViewClient(null); 1057 mCallbackProxy.setWebChromeClient(null); 1058 // Tell WebViewCore to destroy itself 1059 WebViewCore webViewCore = mWebViewCore; 1060 mWebViewCore = null; // prevent using partial webViewCore 1061 webViewCore.destroy(); 1062 // Remove any pending messages that might not be serviced yet. 1063 mPrivateHandler.removeCallbacksAndMessages(null); 1064 mCallbackProxy.removeCallbacksAndMessages(null); 1065 // Wake up the WebCore thread just in case it is waiting for a 1066 // javascript dialog. 1067 synchronized (mCallbackProxy) { 1068 mCallbackProxy.notify(); 1069 } 1070 } 1071 if (mNativeClass != 0) { 1072 nativeDestroy(); 1073 mNativeClass = 0; 1074 } 1075 } 1076 1077 /** 1078 * Enables platform notifications of data state and proxy changes. 1079 */ 1080 public static void enablePlatformNotifications() { 1081 Network.enablePlatformNotifications(); 1082 } 1083 1084 /** 1085 * If platform notifications are enabled, this should be called 1086 * from the Activity's onPause() or onStop(). 1087 */ 1088 public static void disablePlatformNotifications() { 1089 Network.disablePlatformNotifications(); 1090 } 1091 1092 /** 1093 * Sets JavaScript engine flags. 1094 * 1095 * @param flags JS engine flags in a String 1096 * 1097 * @hide pending API solidification 1098 */ 1099 public void setJsFlags(String flags) { 1100 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1101 } 1102 1103 /** 1104 * Inform WebView of the network state. This is used to set 1105 * the javascript property window.navigator.isOnline and 1106 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1107 * @param networkUp boolean indicating if network is available 1108 */ 1109 public void setNetworkAvailable(boolean networkUp) { 1110 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1111 networkUp ? 1 : 0, 0); 1112 } 1113 1114 /** 1115 * Save the state of this WebView used in 1116 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1117 * method no longer stores the display data for this WebView. The previous 1118 * behavior could potentially leak files if {@link #restoreState} was never 1119 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1120 * and restoring the display data. 1121 * @param outState The Bundle to store the WebView state. 1122 * @return The same copy of the back/forward list used to save the state. If 1123 * saveState fails, the returned list will be null. 1124 * @see #savePicture 1125 * @see #restorePicture 1126 */ 1127 public WebBackForwardList saveState(Bundle outState) { 1128 if (outState == null) { 1129 return null; 1130 } 1131 // We grab a copy of the back/forward list because a client of WebView 1132 // may have invalidated the history list by calling clearHistory. 1133 WebBackForwardList list = copyBackForwardList(); 1134 final int currentIndex = list.getCurrentIndex(); 1135 final int size = list.getSize(); 1136 // We should fail saving the state if the list is empty or the index is 1137 // not in a valid range. 1138 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1139 return null; 1140 } 1141 outState.putInt("index", currentIndex); 1142 // FIXME: This should just be a byte[][] instead of ArrayList but 1143 // Parcel.java does not have the code to handle multi-dimensional 1144 // arrays. 1145 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1146 for (int i = 0; i < size; i++) { 1147 WebHistoryItem item = list.getItemAtIndex(i); 1148 if (null == item) { 1149 // FIXME: this shouldn't happen 1150 // need to determine how item got set to null 1151 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1152 return null; 1153 } 1154 byte[] data = item.getFlattenedData(); 1155 if (data == null) { 1156 // It would be very odd to not have any data for a given history 1157 // item. And we will fail to rebuild the history list without 1158 // flattened data. 1159 return null; 1160 } 1161 history.add(data); 1162 } 1163 outState.putSerializable("history", history); 1164 if (mCertificate != null) { 1165 outState.putBundle("certificate", 1166 SslCertificate.saveState(mCertificate)); 1167 } 1168 return list; 1169 } 1170 1171 /** 1172 * Save the current display data to the Bundle given. Used in conjunction 1173 * with {@link #saveState}. 1174 * @param b A Bundle to store the display data. 1175 * @param dest The file to store the serialized picture data. Will be 1176 * overwritten with this WebView's picture data. 1177 * @return True if the picture was successfully saved. 1178 */ 1179 public boolean savePicture(Bundle b, File dest) { 1180 if (dest == null || b == null) { 1181 return false; 1182 } 1183 final Picture p = capturePicture(); 1184 try { 1185 final FileOutputStream out = new FileOutputStream(dest); 1186 p.writeToStream(out); 1187 out.close(); 1188 } catch (FileNotFoundException e){ 1189 e.printStackTrace(); 1190 } catch (IOException e) { 1191 e.printStackTrace(); 1192 } catch (RuntimeException e) { 1193 e.printStackTrace(); 1194 } 1195 if (dest.length() > 0) { 1196 b.putInt("scrollX", mScrollX); 1197 b.putInt("scrollY", mScrollY); 1198 b.putFloat("scale", mActualScale); 1199 b.putFloat("textwrapScale", mTextWrapScale); 1200 b.putBoolean("overview", mInZoomOverview); 1201 return true; 1202 } 1203 return false; 1204 } 1205 1206 /** 1207 * Restore the display data that was save in {@link #savePicture}. Used in 1208 * conjunction with {@link #restoreState}. 1209 * @param b A Bundle containing the saved display data. 1210 * @param src The file where the picture data was stored. 1211 * @return True if the picture was successfully restored. 1212 */ 1213 public boolean restorePicture(Bundle b, File src) { 1214 if (src == null || b == null) { 1215 return false; 1216 } 1217 if (src.exists()) { 1218 Picture p = null; 1219 try { 1220 final FileInputStream in = new FileInputStream(src); 1221 p = Picture.createFromStream(in); 1222 in.close(); 1223 } catch (FileNotFoundException e){ 1224 e.printStackTrace(); 1225 } catch (RuntimeException e) { 1226 e.printStackTrace(); 1227 } catch (IOException e) { 1228 e.printStackTrace(); 1229 } 1230 if (p != null) { 1231 int sx = b.getInt("scrollX", 0); 1232 int sy = b.getInt("scrollY", 0); 1233 float scale = b.getFloat("scale", 1.0f); 1234 mDrawHistory = true; 1235 mHistoryPicture = p; 1236 mScrollX = sx; 1237 mScrollY = sy; 1238 mHistoryWidth = Math.round(p.getWidth() * scale); 1239 mHistoryHeight = Math.round(p.getHeight() * scale); 1240 // as getWidth() / getHeight() of the view are not 1241 // available yet, set up mActualScale, so that when 1242 // onSizeChanged() is called, the rest will be set 1243 // correctly 1244 mActualScale = scale; 1245 mTextWrapScale = b.getFloat("textwrapScale", scale); 1246 mInZoomOverview = b.getBoolean("overview"); 1247 invalidate(); 1248 return true; 1249 } 1250 } 1251 return false; 1252 } 1253 1254 /** 1255 * Restore the state of this WebView from the given map used in 1256 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1257 * be called to restore the state of the WebView before using the object. If 1258 * it is called after the WebView has had a chance to build state (load 1259 * pages, create a back/forward list, etc.) there may be undesirable 1260 * side-effects. Please note that this method no longer restores the 1261 * display data for this WebView. See {@link #savePicture} and {@link 1262 * #restorePicture} for saving and restoring the display data. 1263 * @param inState The incoming Bundle of state. 1264 * @return The restored back/forward list or null if restoreState failed. 1265 * @see #savePicture 1266 * @see #restorePicture 1267 */ 1268 public WebBackForwardList restoreState(Bundle inState) { 1269 WebBackForwardList returnList = null; 1270 if (inState == null) { 1271 return returnList; 1272 } 1273 if (inState.containsKey("index") && inState.containsKey("history")) { 1274 mCertificate = SslCertificate.restoreState( 1275 inState.getBundle("certificate")); 1276 1277 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1278 final int index = inState.getInt("index"); 1279 // We can't use a clone of the list because we need to modify the 1280 // shared copy, so synchronize instead to prevent concurrent 1281 // modifications. 1282 synchronized (list) { 1283 final List<byte[]> history = 1284 (List<byte[]>) inState.getSerializable("history"); 1285 final int size = history.size(); 1286 // Check the index bounds so we don't crash in native code while 1287 // restoring the history index. 1288 if (index < 0 || index >= size) { 1289 return null; 1290 } 1291 for (int i = 0; i < size; i++) { 1292 byte[] data = history.remove(0); 1293 if (data == null) { 1294 // If we somehow have null data, we cannot reconstruct 1295 // the item and thus our history list cannot be rebuilt. 1296 return null; 1297 } 1298 WebHistoryItem item = new WebHistoryItem(data); 1299 list.addHistoryItem(item); 1300 } 1301 // Grab the most recent copy to return to the caller. 1302 returnList = copyBackForwardList(); 1303 // Update the copy to have the correct index. 1304 returnList.setCurrentIndex(index); 1305 } 1306 // Remove all pending messages because we are restoring previous 1307 // state. 1308 mWebViewCore.removeMessages(); 1309 // Send a restore state message. 1310 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1311 } 1312 return returnList; 1313 } 1314 1315 /** 1316 * Load the given url. 1317 * @param url The url of the resource to load. 1318 */ 1319 public void loadUrl(String url) { 1320 if (url == null) { 1321 return; 1322 } 1323 switchOutDrawHistory(); 1324 mWebViewCore.sendMessage(EventHub.LOAD_URL, url); 1325 clearTextEntry(); 1326 } 1327 1328 /** 1329 * Load the url with postData using "POST" method into the WebView. If url 1330 * is not a network url, it will be loaded with {link 1331 * {@link #loadUrl(String)} instead. 1332 * 1333 * @param url The url of the resource to load. 1334 * @param postData The data will be passed to "POST" request. 1335 */ 1336 public void postUrl(String url, byte[] postData) { 1337 if (URLUtil.isNetworkUrl(url)) { 1338 switchOutDrawHistory(); 1339 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1340 arg.mUrl = url; 1341 arg.mPostData = postData; 1342 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1343 clearTextEntry(); 1344 } else { 1345 loadUrl(url); 1346 } 1347 } 1348 1349 /** 1350 * Load the given data into the WebView. This will load the data into 1351 * WebView using the data: scheme. Content loaded through this mechanism 1352 * does not have the ability to load content from the network. 1353 * @param data A String of data in the given encoding. 1354 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1355 * @param encoding The encoding of the data. i.e. utf-8, base64 1356 */ 1357 public void loadData(String data, String mimeType, String encoding) { 1358 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1359 } 1360 1361 /** 1362 * Load the given data into the WebView, use the provided URL as the base 1363 * URL for the content. The base URL is the URL that represents the page 1364 * that is loaded through this interface. As such, it is used for the 1365 * history entry and to resolve any relative URLs. The failUrl is used if 1366 * browser fails to load the data provided. If it is empty or null, and the 1367 * load fails, then no history entry is created. 1368 * <p> 1369 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1370 * files through "file:///android_asset/" for the sub resources is more 1371 * restricted. If you provide null or empty string as baseUrl, you won't be 1372 * able to access asset files. If the baseUrl is anything other than 1373 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1374 * sub resources. 1375 * 1376 * @param baseUrl Url to resolve relative paths with, if null defaults to 1377 * "about:blank" 1378 * @param data A String of data in the given encoding. 1379 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1380 * defaults to "text/html" 1381 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1382 * @param failUrl URL to use if the content fails to load or null. 1383 */ 1384 public void loadDataWithBaseURL(String baseUrl, String data, 1385 String mimeType, String encoding, String failUrl) { 1386 1387 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1388 loadData(data, mimeType, encoding); 1389 return; 1390 } 1391 switchOutDrawHistory(); 1392 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1393 arg.mBaseUrl = baseUrl; 1394 arg.mData = data; 1395 arg.mMimeType = mimeType; 1396 arg.mEncoding = encoding; 1397 arg.mFailUrl = failUrl; 1398 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1399 clearTextEntry(); 1400 } 1401 1402 /** 1403 * Stop the current load. 1404 */ 1405 public void stopLoading() { 1406 // TODO: should we clear all the messages in the queue before sending 1407 // STOP_LOADING? 1408 switchOutDrawHistory(); 1409 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1410 } 1411 1412 /** 1413 * Reload the current url. 1414 */ 1415 public void reload() { 1416 clearTextEntry(); 1417 switchOutDrawHistory(); 1418 mWebViewCore.sendMessage(EventHub.RELOAD); 1419 } 1420 1421 /** 1422 * Return true if this WebView has a back history item. 1423 * @return True iff this WebView has a back history item. 1424 */ 1425 public boolean canGoBack() { 1426 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1427 synchronized (l) { 1428 if (l.getClearPending()) { 1429 return false; 1430 } else { 1431 return l.getCurrentIndex() > 0; 1432 } 1433 } 1434 } 1435 1436 /** 1437 * Go back in the history of this WebView. 1438 */ 1439 public void goBack() { 1440 goBackOrForward(-1); 1441 } 1442 1443 /** 1444 * Return true if this WebView has a forward history item. 1445 * @return True iff this Webview has a forward history item. 1446 */ 1447 public boolean canGoForward() { 1448 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1449 synchronized (l) { 1450 if (l.getClearPending()) { 1451 return false; 1452 } else { 1453 return l.getCurrentIndex() < l.getSize() - 1; 1454 } 1455 } 1456 } 1457 1458 /** 1459 * Go forward in the history of this WebView. 1460 */ 1461 public void goForward() { 1462 goBackOrForward(1); 1463 } 1464 1465 /** 1466 * Return true if the page can go back or forward the given 1467 * number of steps. 1468 * @param steps The negative or positive number of steps to move the 1469 * history. 1470 */ 1471 public boolean canGoBackOrForward(int steps) { 1472 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1473 synchronized (l) { 1474 if (l.getClearPending()) { 1475 return false; 1476 } else { 1477 int newIndex = l.getCurrentIndex() + steps; 1478 return newIndex >= 0 && newIndex < l.getSize(); 1479 } 1480 } 1481 } 1482 1483 /** 1484 * Go to the history item that is the number of steps away from 1485 * the current item. Steps is negative if backward and positive 1486 * if forward. 1487 * @param steps The number of steps to take back or forward in the back 1488 * forward list. 1489 */ 1490 public void goBackOrForward(int steps) { 1491 goBackOrForward(steps, false); 1492 } 1493 1494 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1495 // every time we go back or forward, we want to reset the 1496 // WebView certificate: 1497 // if the new site is secure, we will reload it and get a 1498 // new certificate set; 1499 // if the new site is not secure, the certificate must be 1500 // null, and that will be the case 1501 mCertificate = null; 1502 if (steps != 0) { 1503 clearTextEntry(); 1504 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1505 ignoreSnapshot ? 1 : 0); 1506 } 1507 } 1508 1509 private boolean extendScroll(int y) { 1510 int finalY = mScroller.getFinalY(); 1511 int newY = pinLocY(finalY + y); 1512 if (newY == finalY) return false; 1513 mScroller.setFinalY(newY); 1514 mScroller.extendDuration(computeDuration(0, y)); 1515 return true; 1516 } 1517 1518 /** 1519 * Scroll the contents of the view up by half the view size 1520 * @param top true to jump to the top of the page 1521 * @return true if the page was scrolled 1522 */ 1523 public boolean pageUp(boolean top) { 1524 if (mNativeClass == 0) { 1525 return false; 1526 } 1527 nativeClearCursor(); // start next trackball movement from page edge 1528 if (top) { 1529 // go to the top of the document 1530 return pinScrollTo(mScrollX, 0, true, 0); 1531 } 1532 // Page up 1533 int h = getHeight(); 1534 int y; 1535 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1536 y = -h + PAGE_SCROLL_OVERLAP; 1537 } else { 1538 y = -h / 2; 1539 } 1540 mUserScroll = true; 1541 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1542 : extendScroll(y); 1543 } 1544 1545 /** 1546 * Scroll the contents of the view down by half the page size 1547 * @param bottom true to jump to bottom of page 1548 * @return true if the page was scrolled 1549 */ 1550 public boolean pageDown(boolean bottom) { 1551 if (mNativeClass == 0) { 1552 return false; 1553 } 1554 nativeClearCursor(); // start next trackball movement from page edge 1555 if (bottom) { 1556 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1557 } 1558 // Page down. 1559 int h = getHeight(); 1560 int y; 1561 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1562 y = h - PAGE_SCROLL_OVERLAP; 1563 } else { 1564 y = h / 2; 1565 } 1566 mUserScroll = true; 1567 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1568 : extendScroll(y); 1569 } 1570 1571 /** 1572 * Clear the view so that onDraw() will draw nothing but white background, 1573 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1574 */ 1575 public void clearView() { 1576 mContentWidth = 0; 1577 mContentHeight = 0; 1578 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1579 } 1580 1581 /** 1582 * Return a new picture that captures the current display of the webview. 1583 * This is a copy of the display, and will be unaffected if the webview 1584 * later loads a different URL. 1585 * 1586 * @return a picture containing the current contents of the view. Note this 1587 * picture is of the entire document, and is not restricted to the 1588 * bounds of the view. 1589 */ 1590 public Picture capturePicture() { 1591 if (null == mWebViewCore) return null; // check for out of memory tab 1592 return mWebViewCore.copyContentPicture(); 1593 } 1594 1595 /** 1596 * Return true if the browser is displaying a TextView for text input. 1597 */ 1598 private boolean inEditingMode() { 1599 return mWebTextView != null && mWebTextView.getParent() != null 1600 && mWebTextView.hasFocus(); 1601 } 1602 1603 private void clearTextEntry() { 1604 if (inEditingMode()) { 1605 mWebTextView.remove(); 1606 } 1607 } 1608 1609 /** 1610 * Return the current scale of the WebView 1611 * @return The current scale. 1612 */ 1613 public float getScale() { 1614 return mActualScale; 1615 } 1616 1617 /** 1618 * Set the initial scale for the WebView. 0 means default. If 1619 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1620 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1621 * WebView starts will this value as initial scale. 1622 * 1623 * @param scaleInPercent The initial scale in percent. 1624 */ 1625 public void setInitialScale(int scaleInPercent) { 1626 mInitialScaleInPercent = scaleInPercent; 1627 } 1628 1629 /** 1630 * Invoke the graphical zoom picker widget for this WebView. This will 1631 * result in the zoom widget appearing on the screen to control the zoom 1632 * level of this WebView. 1633 */ 1634 public void invokeZoomPicker() { 1635 if (!getSettings().supportZoom()) { 1636 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1637 return; 1638 } 1639 clearTextEntry(); 1640 if (getSettings().getBuiltInZoomControls()) { 1641 mZoomButtonsController.setVisible(true); 1642 } else { 1643 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1644 mPrivateHandler.postDelayed(mZoomControlRunnable, 1645 ZOOM_CONTROLS_TIMEOUT); 1646 } 1647 } 1648 1649 /** 1650 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1651 * is found and the anchor has a non-javascript url, the HitTestResult type 1652 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1653 * anchor does not have a url or if it is a javascript url, the type will 1654 * be UNKNOWN_TYPE and the url has to be retrieved through 1655 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1656 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1657 * the "extra" field. A type of 1658 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1659 * a child node. If a phone number is found, the HitTestResult type is set 1660 * to PHONE_TYPE and the phone number is set in the "extra" field of 1661 * HitTestResult. If a map address is found, the HitTestResult type is set 1662 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1663 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1664 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1665 * HitTestResult type is set to UNKNOWN_TYPE. 1666 */ 1667 public HitTestResult getHitTestResult() { 1668 if (mNativeClass == 0) { 1669 return null; 1670 } 1671 1672 HitTestResult result = new HitTestResult(); 1673 if (nativeHasCursorNode()) { 1674 if (nativeCursorIsTextInput()) { 1675 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1676 } else { 1677 String text = nativeCursorText(); 1678 if (text != null) { 1679 if (text.startsWith(SCHEME_TEL)) { 1680 result.setType(HitTestResult.PHONE_TYPE); 1681 result.setExtra(text.substring(SCHEME_TEL.length())); 1682 } else if (text.startsWith(SCHEME_MAILTO)) { 1683 result.setType(HitTestResult.EMAIL_TYPE); 1684 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1685 } else if (text.startsWith(SCHEME_GEO)) { 1686 result.setType(HitTestResult.GEO_TYPE); 1687 result.setExtra(URLDecoder.decode(text 1688 .substring(SCHEME_GEO.length()))); 1689 } else if (nativeCursorIsAnchor()) { 1690 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1691 result.setExtra(text); 1692 } 1693 } 1694 } 1695 } 1696 int type = result.getType(); 1697 if (type == HitTestResult.UNKNOWN_TYPE 1698 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1699 // Now check to see if it is an image. 1700 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1701 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1702 String text = nativeImageURI(contentX, contentY); 1703 if (text != null) { 1704 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1705 HitTestResult.IMAGE_TYPE : 1706 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1707 result.setExtra(text); 1708 } 1709 } 1710 return result; 1711 } 1712 1713 /** 1714 * Request the href of an anchor element due to getFocusNodePath returning 1715 * "href." If hrefMsg is null, this method returns immediately and does not 1716 * dispatch hrefMsg to its target. 1717 * 1718 * @param hrefMsg This message will be dispatched with the result of the 1719 * request as the data member with "url" as key. The result can 1720 * be null. 1721 */ 1722 // FIXME: API change required to change the name of this function. We now 1723 // look at the cursor node, and not the focus node. Also, what is 1724 // getFocusNodePath? 1725 public void requestFocusNodeHref(Message hrefMsg) { 1726 if (hrefMsg == null || mNativeClass == 0) { 1727 return; 1728 } 1729 if (nativeCursorIsAnchor()) { 1730 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1731 nativeCursorFramePointer(), nativeCursorNodePointer(), 1732 hrefMsg); 1733 } 1734 } 1735 1736 /** 1737 * Request the url of the image last touched by the user. msg will be sent 1738 * to its target with a String representing the url as its object. 1739 * 1740 * @param msg This message will be dispatched with the result of the request 1741 * as the data member with "url" as key. The result can be null. 1742 */ 1743 public void requestImageRef(Message msg) { 1744 if (0 == mNativeClass) return; // client isn't initialized 1745 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1746 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1747 String ref = nativeImageURI(contentX, contentY); 1748 Bundle data = msg.getData(); 1749 data.putString("url", ref); 1750 msg.setData(data); 1751 msg.sendToTarget(); 1752 } 1753 1754 private static int pinLoc(int x, int viewMax, int docMax) { 1755// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1756 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1757 // pin the short document to the top/left of the screen 1758 x = 0; 1759// Log.d(LOGTAG, "--- center " + x); 1760 } else if (x < 0) { 1761 x = 0; 1762// Log.d(LOGTAG, "--- zero"); 1763 } else if (x + viewMax > docMax) { 1764 x = docMax - viewMax; 1765// Log.d(LOGTAG, "--- pin " + x); 1766 } 1767 return x; 1768 } 1769 1770 // Expects x in view coordinates 1771 private int pinLocX(int x) { 1772 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1773 } 1774 1775 // Expects y in view coordinates 1776 private int pinLocY(int y) { 1777 int titleH = getTitleHeight(); 1778 // if the titlebar is still visible, just pin against 0 1779 if (y <= titleH) { 1780 return Math.max(y, 0); 1781 } 1782 // convert to 0-based coordinate (subtract the title height) 1783 // pin(), and then add the title height back in 1784 return pinLoc(y - titleH, getViewHeight(), 1785 computeVerticalScrollRange()) + titleH; 1786 } 1787 1788 /** 1789 * A title bar which is embedded in this WebView, and scrolls along with it 1790 * vertically, but not horizontally. 1791 */ 1792 private View mTitleBar; 1793 1794 /** 1795 * Since we draw the title bar ourselves, we removed the shadow from the 1796 * browser's activity. We do want a shadow at the bottom of the title bar, 1797 * or at the top of the screen if the title bar is not visible. This 1798 * drawable serves that purpose. 1799 */ 1800 private Drawable mTitleShadow; 1801 1802 /** 1803 * Add or remove a title bar to be embedded into the WebView, and scroll 1804 * along with it vertically, while remaining in view horizontally. Pass 1805 * null to remove the title bar from the WebView, and return to drawing 1806 * the WebView normally without translating to account for the title bar. 1807 * @hide 1808 */ 1809 public void setEmbeddedTitleBar(View v) { 1810 if (mTitleBar == v) return; 1811 if (mTitleBar != null) { 1812 removeView(mTitleBar); 1813 } 1814 if (null != v) { 1815 addView(v, new AbsoluteLayout.LayoutParams( 1816 ViewGroup.LayoutParams.FILL_PARENT, 1817 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1818 if (mTitleShadow == null) { 1819 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1820 com.android.internal.R.drawable.title_bar_shadow); 1821 } 1822 } 1823 mTitleBar = v; 1824 } 1825 1826 /** 1827 * Given a distance in view space, convert it to content space. Note: this 1828 * does not reflect translation, just scaling, so this should not be called 1829 * with coordinates, but should be called for dimensions like width or 1830 * height. 1831 */ 1832 private int viewToContentDimension(int d) { 1833 return Math.round(d * mInvActualScale); 1834 } 1835 1836 /** 1837 * Given an x coordinate in view space, convert it to content space. Also 1838 * may be used for absolute heights (such as for the WebTextView's 1839 * textSize, which is unaffected by the height of the title bar). 1840 */ 1841 /*package*/ int viewToContentX(int x) { 1842 return viewToContentDimension(x); 1843 } 1844 1845 /** 1846 * Given a y coordinate in view space, convert it to content space. 1847 * Takes into account the height of the title bar if there is one 1848 * embedded into the WebView. 1849 */ 1850 /*package*/ int viewToContentY(int y) { 1851 return viewToContentDimension(y - getTitleHeight()); 1852 } 1853 1854 /** 1855 * Given a distance in content space, convert it to view space. Note: this 1856 * does not reflect translation, just scaling, so this should not be called 1857 * with coordinates, but should be called for dimensions like width or 1858 * height. 1859 */ 1860 /*package*/ int contentToViewDimension(int d) { 1861 return Math.round(d * mActualScale); 1862 } 1863 1864 /** 1865 * Given an x coordinate in content space, convert it to view 1866 * space. 1867 */ 1868 /*package*/ int contentToViewX(int x) { 1869 return contentToViewDimension(x); 1870 } 1871 1872 /** 1873 * Given a y coordinate in content space, convert it to view 1874 * space. Takes into account the height of the title bar. 1875 */ 1876 /*package*/ int contentToViewY(int y) { 1877 return contentToViewDimension(y) + getTitleHeight(); 1878 } 1879 1880 private Rect contentToViewRect(Rect x) { 1881 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 1882 contentToViewX(x.right), contentToViewY(x.bottom)); 1883 } 1884 1885 /* To invalidate a rectangle in content coordinates, we need to transform 1886 the rect into view coordinates, so we can then call invalidate(...). 1887 1888 Normally, we would just call contentToView[XY](...), which eventually 1889 calls Math.round(coordinate * mActualScale). However, for invalidates, 1890 we need to account for the slop that occurs with antialiasing. To 1891 address that, we are a little more liberal in the size of the rect that 1892 we invalidate. 1893 1894 This liberal calculation calls floor() for the top/left, and ceil() for 1895 the bottom/right coordinates. This catches the possible extra pixels of 1896 antialiasing that we might have missed with just round(). 1897 */ 1898 1899 // Called by JNI to invalidate the View, given rectangle coordinates in 1900 // content space 1901 private void viewInvalidate(int l, int t, int r, int b) { 1902 final float scale = mActualScale; 1903 final int dy = getTitleHeight(); 1904 invalidate((int)Math.floor(l * scale), 1905 (int)Math.floor(t * scale) + dy, 1906 (int)Math.ceil(r * scale), 1907 (int)Math.ceil(b * scale) + dy); 1908 } 1909 1910 // Called by JNI to invalidate the View after a delay, given rectangle 1911 // coordinates in content space 1912 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1913 final float scale = mActualScale; 1914 final int dy = getTitleHeight(); 1915 postInvalidateDelayed(delay, 1916 (int)Math.floor(l * scale), 1917 (int)Math.floor(t * scale) + dy, 1918 (int)Math.ceil(r * scale), 1919 (int)Math.ceil(b * scale) + dy); 1920 } 1921 1922 private void invalidateContentRect(Rect r) { 1923 viewInvalidate(r.left, r.top, r.right, r.bottom); 1924 } 1925 1926 // stop the scroll animation, and don't let a subsequent fling add 1927 // to the existing velocity 1928 private void abortAnimation() { 1929 mScroller.abortAnimation(); 1930 mLastVelocity = 0; 1931 } 1932 1933 /* call from webcoreview.draw(), so we're still executing in the UI thread 1934 */ 1935 private void recordNewContentSize(int w, int h, boolean updateLayout) { 1936 1937 // premature data from webkit, ignore 1938 if ((w | h) == 0) { 1939 return; 1940 } 1941 1942 // don't abort a scroll animation if we didn't change anything 1943 if (mContentWidth != w || mContentHeight != h) { 1944 // record new dimensions 1945 mContentWidth = w; 1946 mContentHeight = h; 1947 // If history Picture is drawn, don't update scroll. They will be 1948 // updated when we get out of that mode. 1949 if (!mDrawHistory) { 1950 // repin our scroll, taking into account the new content size 1951 int oldX = mScrollX; 1952 int oldY = mScrollY; 1953 mScrollX = pinLocX(mScrollX); 1954 mScrollY = pinLocY(mScrollY); 1955 if (oldX != mScrollX || oldY != mScrollY) { 1956 sendOurVisibleRect(); 1957 } 1958 if (!mScroller.isFinished()) { 1959 // We are in the middle of a scroll. Repin the final scroll 1960 // position. 1961 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 1962 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 1963 } 1964 } 1965 } 1966 contentSizeChanged(updateLayout); 1967 } 1968 1969 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 1970 boolean force) { 1971 if (scale < mMinZoomScale) { 1972 scale = mMinZoomScale; 1973 } else if (scale > mMaxZoomScale) { 1974 scale = mMaxZoomScale; 1975 } 1976 if (updateTextWrapScale) { 1977 mTextWrapScale = scale; 1978 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 1979 mLastHeightSent = 0; 1980 } 1981 if (scale != mActualScale || force) { 1982 if (mDrawHistory) { 1983 // If history Picture is drawn, don't update scroll. They will 1984 // be updated when we get out of that mode. 1985 if (scale != mActualScale && !mPreviewZoomOnly) { 1986 mCallbackProxy.onScaleChanged(mActualScale, scale); 1987 } 1988 mActualScale = scale; 1989 mInvActualScale = 1 / scale; 1990 sendViewSizeZoom(); 1991 } else { 1992 // update our scroll so we don't appear to jump 1993 // i.e. keep the center of the doc in the center of the view 1994 1995 int oldX = mScrollX; 1996 int oldY = mScrollY; 1997 float ratio = scale * mInvActualScale; // old inverse 1998 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 1999 float sy = ratio * oldY + (ratio - 1) 2000 * (mZoomCenterY - getTitleHeight()); 2001 2002 // now update our new scale and inverse 2003 if (scale != mActualScale && !mPreviewZoomOnly) { 2004 mCallbackProxy.onScaleChanged(mActualScale, scale); 2005 } 2006 mActualScale = scale; 2007 mInvActualScale = 1 / scale; 2008 2009 // Scale all the child views 2010 mViewManager.scaleAll(); 2011 2012 // as we don't have animation for scaling, don't do animation 2013 // for scrolling, as it causes weird intermediate state 2014 // pinScrollTo(Math.round(sx), Math.round(sy)); 2015 mScrollX = pinLocX(Math.round(sx)); 2016 mScrollY = pinLocY(Math.round(sy)); 2017 2018 // update webkit 2019 sendViewSizeZoom(); 2020 sendOurVisibleRect(); 2021 } 2022 } 2023 } 2024 2025 // Used to avoid sending many visible rect messages. 2026 private Rect mLastVisibleRectSent; 2027 private Rect mLastGlobalRect; 2028 2029 private Rect sendOurVisibleRect() { 2030 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2031 2032 Rect rect = new Rect(); 2033 calcOurContentVisibleRect(rect); 2034 // Rect.equals() checks for null input. 2035 if (!rect.equals(mLastVisibleRectSent)) { 2036 Point pos = new Point(rect.left, rect.top); 2037 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2038 nativeMoveGeneration(), 0, pos); 2039 mLastVisibleRectSent = rect; 2040 } 2041 Rect globalRect = new Rect(); 2042 if (getGlobalVisibleRect(globalRect) 2043 && !globalRect.equals(mLastGlobalRect)) { 2044 if (DebugFlags.WEB_VIEW) { 2045 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2046 + globalRect.top + ",r=" + globalRect.right + ",b=" 2047 + globalRect.bottom); 2048 } 2049 // TODO: the global offset is only used by windowRect() 2050 // in ChromeClientAndroid ; other clients such as touch 2051 // and mouse events could return view + screen relative points. 2052 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2053 mLastGlobalRect = globalRect; 2054 } 2055 return rect; 2056 } 2057 2058 // Sets r to be the visible rectangle of our webview in view coordinates 2059 private void calcOurVisibleRect(Rect r) { 2060 Point p = new Point(); 2061 getGlobalVisibleRect(r, p); 2062 r.offset(-p.x, -p.y); 2063 if (mFindIsUp) { 2064 r.bottom -= mFindHeight; 2065 } 2066 } 2067 2068 // Sets r to be our visible rectangle in content coordinates 2069 private void calcOurContentVisibleRect(Rect r) { 2070 calcOurVisibleRect(r); 2071 r.left = viewToContentX(r.left); 2072 // viewToContentY will remove the total height of the title bar. Add 2073 // the visible height back in to account for the fact that if the title 2074 // bar is partially visible, the part of the visible rect which is 2075 // displaying our content is displaced by that amount. 2076 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2077 r.right = viewToContentX(r.right); 2078 r.bottom = viewToContentY(r.bottom); 2079 } 2080 2081 static class ViewSizeData { 2082 int mWidth; 2083 int mHeight; 2084 int mTextWrapWidth; 2085 int mAnchorX; 2086 int mAnchorY; 2087 float mScale; 2088 boolean mIgnoreHeight; 2089 } 2090 2091 /** 2092 * Compute unzoomed width and height, and if they differ from the last 2093 * values we sent, send them to webkit (to be used has new viewport) 2094 * 2095 * @return true if new values were sent 2096 */ 2097 private boolean sendViewSizeZoom() { 2098 if (mPreviewZoomOnly) return false; 2099 2100 int viewWidth = getViewWidth(); 2101 int newWidth = Math.round(viewWidth * mInvActualScale); 2102 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2103 /* 2104 * Because the native side may have already done a layout before the 2105 * View system was able to measure us, we have to send a height of 0 to 2106 * remove excess whitespace when we grow our width. This will trigger a 2107 * layout and a change in content size. This content size change will 2108 * mean that contentSizeChanged will either call this method directly or 2109 * indirectly from onSizeChanged. 2110 */ 2111 if (newWidth > mLastWidthSent && mWrapContent) { 2112 newHeight = 0; 2113 } 2114 // Avoid sending another message if the dimensions have not changed. 2115 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2116 ViewSizeData data = new ViewSizeData(); 2117 data.mWidth = newWidth; 2118 data.mHeight = newHeight; 2119 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2120 data.mScale = mActualScale; 2121 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2122 data.mAnchorX = mAnchorX; 2123 data.mAnchorY = mAnchorY; 2124 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2125 mLastWidthSent = newWidth; 2126 mLastHeightSent = newHeight; 2127 mAnchorX = mAnchorY = 0; 2128 return true; 2129 } 2130 return false; 2131 } 2132 2133 @Override 2134 protected int computeHorizontalScrollRange() { 2135 if (mDrawHistory) { 2136 return mHistoryWidth; 2137 } else { 2138 // to avoid rounding error caused unnecessary scrollbar, use floor 2139 return (int) Math.floor(mContentWidth * mActualScale); 2140 } 2141 } 2142 2143 @Override 2144 protected int computeVerticalScrollRange() { 2145 if (mDrawHistory) { 2146 return mHistoryHeight; 2147 } else { 2148 // to avoid rounding error caused unnecessary scrollbar, use floor 2149 return (int) Math.floor(mContentHeight * mActualScale); 2150 } 2151 } 2152 2153 @Override 2154 protected int computeVerticalScrollOffset() { 2155 return Math.max(mScrollY - getTitleHeight(), 0); 2156 } 2157 2158 @Override 2159 protected int computeVerticalScrollExtent() { 2160 return getViewHeight(); 2161 } 2162 2163 /** @hide */ 2164 @Override 2165 protected void onDrawVerticalScrollBar(Canvas canvas, 2166 Drawable scrollBar, 2167 int l, int t, int r, int b) { 2168 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2169 scrollBar.draw(canvas); 2170 } 2171 2172 /** 2173 * Get the url for the current page. This is not always the same as the url 2174 * passed to WebViewClient.onPageStarted because although the load for 2175 * that url has begun, the current page may not have changed. 2176 * @return The url for the current page. 2177 */ 2178 public String getUrl() { 2179 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2180 return h != null ? h.getUrl() : null; 2181 } 2182 2183 /** 2184 * Get the original url for the current page. This is not always the same 2185 * as the url passed to WebViewClient.onPageStarted because although the 2186 * load for that url has begun, the current page may not have changed. 2187 * Also, there may have been redirects resulting in a different url to that 2188 * originally requested. 2189 * @return The url that was originally requested for the current page. 2190 */ 2191 public String getOriginalUrl() { 2192 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2193 return h != null ? h.getOriginalUrl() : null; 2194 } 2195 2196 /** 2197 * Get the title for the current page. This is the title of the current page 2198 * until WebViewClient.onReceivedTitle is called. 2199 * @return The title for the current page. 2200 */ 2201 public String getTitle() { 2202 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2203 return h != null ? h.getTitle() : null; 2204 } 2205 2206 /** 2207 * Get the favicon for the current page. This is the favicon of the current 2208 * page until WebViewClient.onReceivedIcon is called. 2209 * @return The favicon for the current page. 2210 */ 2211 public Bitmap getFavicon() { 2212 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2213 return h != null ? h.getFavicon() : null; 2214 } 2215 2216 /** 2217 * Get the touch icon url for the apple-touch-icon <link> element. 2218 * @hide 2219 */ 2220 public String getTouchIconUrl() { 2221 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2222 return h != null ? h.getTouchIconUrl() : null; 2223 } 2224 2225 /** 2226 * Get the progress for the current page. 2227 * @return The progress for the current page between 0 and 100. 2228 */ 2229 public int getProgress() { 2230 return mCallbackProxy.getProgress(); 2231 } 2232 2233 /** 2234 * @return the height of the HTML content. 2235 */ 2236 public int getContentHeight() { 2237 return mContentHeight; 2238 } 2239 2240 /** 2241 * @return the width of the HTML content. 2242 * @hide 2243 */ 2244 public int getContentWidth() { 2245 return mContentWidth; 2246 } 2247 2248 /** 2249 * Pause all layout, parsing, and javascript timers for all webviews. This 2250 * is a global requests, not restricted to just this webview. This can be 2251 * useful if the application has been paused. 2252 */ 2253 public void pauseTimers() { 2254 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2255 } 2256 2257 /** 2258 * Resume all layout, parsing, and javascript timers for all webviews. 2259 * This will resume dispatching all timers. 2260 */ 2261 public void resumeTimers() { 2262 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2263 } 2264 2265 /** 2266 * Call this to pause any extra processing associated with this view and 2267 * its associated DOM/plugins/javascript/etc. For example, if the view is 2268 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2269 * network traffic. When the view is again "active", call onResume(). 2270 * 2271 * Note that this differs from pauseTimers(), which affects all views/DOMs 2272 * @hide 2273 */ 2274 public void onPause() { 2275 if (!mIsPaused) { 2276 mIsPaused = true; 2277 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2278 } 2279 } 2280 2281 /** 2282 * Call this to balanace a previous call to onPause() 2283 * @hide 2284 */ 2285 public void onResume() { 2286 if (mIsPaused) { 2287 mIsPaused = false; 2288 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2289 } 2290 } 2291 2292 /** 2293 * Returns true if the view is paused, meaning onPause() was called. Calling 2294 * onResume() sets the paused state back to false. 2295 * @hide 2296 */ 2297 public boolean isPaused() { 2298 return mIsPaused; 2299 } 2300 2301 /** 2302 * Call this to inform the view that memory is low so that it can 2303 * free any available memory. 2304 */ 2305 public void freeMemory() { 2306 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2307 } 2308 2309 /** 2310 * Clear the resource cache. Note that the cache is per-application, so 2311 * this will clear the cache for all WebViews used. 2312 * 2313 * @param includeDiskFiles If false, only the RAM cache is cleared. 2314 */ 2315 public void clearCache(boolean includeDiskFiles) { 2316 // Note: this really needs to be a static method as it clears cache for all 2317 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2318 // we can't make this static. 2319 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2320 includeDiskFiles ? 1 : 0, 0); 2321 } 2322 2323 /** 2324 * Make sure that clearing the form data removes the adapter from the 2325 * currently focused textfield if there is one. 2326 */ 2327 public void clearFormData() { 2328 if (inEditingMode()) { 2329 AutoCompleteAdapter adapter = null; 2330 mWebTextView.setAdapterCustom(adapter); 2331 } 2332 } 2333 2334 /** 2335 * Tell the WebView to clear its internal back/forward list. 2336 */ 2337 public void clearHistory() { 2338 mCallbackProxy.getBackForwardList().setClearPending(); 2339 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2340 } 2341 2342 /** 2343 * Clear the SSL preferences table stored in response to proceeding with SSL 2344 * certificate errors. 2345 */ 2346 public void clearSslPreferences() { 2347 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2348 } 2349 2350 /** 2351 * Return the WebBackForwardList for this WebView. This contains the 2352 * back/forward list for use in querying each item in the history stack. 2353 * This is a copy of the private WebBackForwardList so it contains only a 2354 * snapshot of the current state. Multiple calls to this method may return 2355 * different objects. The object returned from this method will not be 2356 * updated to reflect any new state. 2357 */ 2358 public WebBackForwardList copyBackForwardList() { 2359 return mCallbackProxy.getBackForwardList().clone(); 2360 } 2361 2362 /* 2363 * Highlight and scroll to the next occurance of String in findAll. 2364 * Wraps the page infinitely, and scrolls. Must be called after 2365 * calling findAll. 2366 * 2367 * @param forward Direction to search. 2368 */ 2369 public void findNext(boolean forward) { 2370 if (0 == mNativeClass) return; // client isn't initialized 2371 nativeFindNext(forward); 2372 } 2373 2374 /* 2375 * Find all instances of find on the page and highlight them. 2376 * @param find String to find. 2377 * @return int The number of occurances of the String "find" 2378 * that were found. 2379 */ 2380 public int findAll(String find) { 2381 if (0 == mNativeClass) return 0; // client isn't initialized 2382 if (mFindIsUp == false) { 2383 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2384 false); 2385 mFindIsUp = true; 2386 } 2387 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2388 invalidate(); 2389 return result; 2390 } 2391 2392 // Used to know whether the find dialog is open. Affects whether 2393 // or not we draw the highlights for matches. 2394 private boolean mFindIsUp; 2395 private int mFindHeight; 2396 2397 /** 2398 * Return the first substring consisting of the address of a physical 2399 * location. Currently, only addresses in the United States are detected, 2400 * and consist of: 2401 * - a house number 2402 * - a street name 2403 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2404 * - a city name 2405 * - a state or territory, either spelled out or two-letter abbr. 2406 * - an optional 5 digit or 9 digit zip code. 2407 * 2408 * All names must be correctly capitalized, and the zip code, if present, 2409 * must be valid for the state. The street type must be a standard USPS 2410 * spelling or abbreviation. The state or territory must also be spelled 2411 * or abbreviated using USPS standards. The house number may not exceed 2412 * five digits. 2413 * @param addr The string to search for addresses. 2414 * 2415 * @return the address, or if no address is found, return null. 2416 */ 2417 public static String findAddress(String addr) { 2418 return findAddress(addr, false); 2419 } 2420 2421 /** 2422 * @hide 2423 * Return the first substring consisting of the address of a physical 2424 * location. Currently, only addresses in the United States are detected, 2425 * and consist of: 2426 * - a house number 2427 * - a street name 2428 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2429 * - a city name 2430 * - a state or territory, either spelled out or two-letter abbr. 2431 * - an optional 5 digit or 9 digit zip code. 2432 * 2433 * Names are optionally capitalized, and the zip code, if present, 2434 * must be valid for the state. The street type must be a standard USPS 2435 * spelling or abbreviation. The state or territory must also be spelled 2436 * or abbreviated using USPS standards. The house number may not exceed 2437 * five digits. 2438 * @param addr The string to search for addresses. 2439 * @param caseInsensitive addr Set to true to make search ignore case. 2440 * 2441 * @return the address, or if no address is found, return null. 2442 */ 2443 public static String findAddress(String addr, boolean caseInsensitive) { 2444 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2445 } 2446 2447 /* 2448 * Clear the highlighting surrounding text matches created by findAll. 2449 */ 2450 public void clearMatches() { 2451 if (mFindIsUp) { 2452 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2453 false); 2454 mFindIsUp = false; 2455 } 2456 nativeSetFindIsDown(); 2457 // Now that the dialog has been removed, ensure that we scroll to a 2458 // location that is not beyond the end of the page. 2459 pinScrollTo(mScrollX, mScrollY, false, 0); 2460 invalidate(); 2461 } 2462 2463 /** 2464 * @hide 2465 */ 2466 public void setFindDialogHeight(int height) { 2467 if (DebugFlags.WEB_VIEW) { 2468 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2469 } 2470 mFindHeight = height; 2471 } 2472 2473 /** 2474 * Query the document to see if it contains any image references. The 2475 * message object will be dispatched with arg1 being set to 1 if images 2476 * were found and 0 if the document does not reference any images. 2477 * @param response The message that will be dispatched with the result. 2478 */ 2479 public void documentHasImages(Message response) { 2480 if (response == null) { 2481 return; 2482 } 2483 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2484 } 2485 2486 @Override 2487 public void computeScroll() { 2488 if (mScroller.computeScrollOffset()) { 2489 int oldX = mScrollX; 2490 int oldY = mScrollY; 2491 mScrollX = mScroller.getCurrX(); 2492 mScrollY = mScroller.getCurrY(); 2493 postInvalidate(); // So we draw again 2494 if (oldX != mScrollX || oldY != mScrollY) { 2495 // as onScrollChanged() is not called, sendOurVisibleRect() 2496 // needs to be call explicitly 2497 sendOurVisibleRect(); 2498 } 2499 } else { 2500 super.computeScroll(); 2501 } 2502 } 2503 2504 private static int computeDuration(int dx, int dy) { 2505 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2506 int duration = distance * 1000 / STD_SPEED; 2507 return Math.min(duration, MAX_DURATION); 2508 } 2509 2510 // helper to pin the scrollBy parameters (already in view coordinates) 2511 // returns true if the scroll was changed 2512 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2513 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2514 } 2515 // helper to pin the scrollTo parameters (already in view coordinates) 2516 // returns true if the scroll was changed 2517 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2518 x = pinLocX(x); 2519 y = pinLocY(y); 2520 int dx = x - mScrollX; 2521 int dy = y - mScrollY; 2522 2523 if ((dx | dy) == 0) { 2524 return false; 2525 } 2526 if (animate) { 2527 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2528 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2529 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2530 awakenScrollBars(mScroller.getDuration()); 2531 invalidate(); 2532 } else { 2533 abortAnimation(); // just in case 2534 scrollTo(x, y); 2535 } 2536 return true; 2537 } 2538 2539 // Scale from content to view coordinates, and pin. 2540 // Also called by jni webview.cpp 2541 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2542 if (mDrawHistory) { 2543 // disallow WebView to change the scroll position as History Picture 2544 // is used in the view system. 2545 // TODO: as we switchOutDrawHistory when trackball or navigation 2546 // keys are hit, this should be safe. Right? 2547 return false; 2548 } 2549 cx = contentToViewDimension(cx); 2550 cy = contentToViewDimension(cy); 2551 if (mHeightCanMeasure) { 2552 // move our visible rect according to scroll request 2553 if (cy != 0) { 2554 Rect tempRect = new Rect(); 2555 calcOurVisibleRect(tempRect); 2556 tempRect.offset(cx, cy); 2557 requestRectangleOnScreen(tempRect); 2558 } 2559 // FIXME: We scroll horizontally no matter what because currently 2560 // ScrollView and ListView will not scroll horizontally. 2561 // FIXME: Why do we only scroll horizontally if there is no 2562 // vertical scroll? 2563// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2564 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2565 } else { 2566 return pinScrollBy(cx, cy, animate, 0); 2567 } 2568 } 2569 2570 // scale from content to view coordinates, and pin 2571 // return true if pin caused the final x/y different than the request cx/cy, 2572 // and a future scroll may reach the request cx/cy after our size has 2573 // changed 2574 // return false if the view scroll to the exact position as it is requested, 2575 // where negative numbers are taken to mean 0 2576 private boolean setContentScrollTo(int cx, int cy) { 2577 if (mDrawHistory) { 2578 // disallow WebView to change the scroll position as History Picture 2579 // is used in the view system. 2580 // One known case where this is called is that WebCore tries to 2581 // restore the scroll position. As history Picture already uses the 2582 // saved scroll position, it is ok to skip this. 2583 return false; 2584 } 2585 int vx; 2586 int vy; 2587 if ((cx | cy) == 0) { 2588 // If the page is being scrolled to (0,0), do not add in the title 2589 // bar's height, and simply scroll to (0,0). (The only other work 2590 // in contentToView_ is to multiply, so this would not change 0.) 2591 vx = 0; 2592 vy = 0; 2593 } else { 2594 vx = contentToViewX(cx); 2595 vy = contentToViewY(cy); 2596 } 2597// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2598// vx + " " + vy + "]"); 2599 // Some mobile sites attempt to scroll the title bar off the page by 2600 // scrolling to (0,1). If we are at the top left corner of the 2601 // page, assume this is an attempt to scroll off the title bar, and 2602 // animate the title bar off screen slowly enough that the user can see 2603 // it. 2604 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0) { 2605 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2606 // Since we are animating, we have not yet reached the desired 2607 // scroll position. Do not return true to request another attempt 2608 return false; 2609 } 2610 pinScrollTo(vx, vy, false, 0); 2611 // If the request was to scroll to a negative coordinate, treat it as if 2612 // it was a request to scroll to 0 2613 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2614 return true; 2615 } else { 2616 return false; 2617 } 2618 } 2619 2620 // scale from content to view coordinates, and pin 2621 private void spawnContentScrollTo(int cx, int cy) { 2622 if (mDrawHistory) { 2623 // disallow WebView to change the scroll position as History Picture 2624 // is used in the view system. 2625 return; 2626 } 2627 int vx = contentToViewX(cx); 2628 int vy = contentToViewY(cy); 2629 pinScrollTo(vx, vy, true, 0); 2630 } 2631 2632 /** 2633 * These are from webkit, and are in content coordinate system (unzoomed) 2634 */ 2635 private void contentSizeChanged(boolean updateLayout) { 2636 // suppress 0,0 since we usually see real dimensions soon after 2637 // this avoids drawing the prev content in a funny place. If we find a 2638 // way to consolidate these notifications, this check may become 2639 // obsolete 2640 if ((mContentWidth | mContentHeight) == 0) { 2641 return; 2642 } 2643 2644 if (mHeightCanMeasure) { 2645 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2646 && updateLayout) { 2647 requestLayout(); 2648 } 2649 } else if (mWidthCanMeasure) { 2650 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2651 && updateLayout) { 2652 requestLayout(); 2653 } 2654 } else { 2655 // If we don't request a layout, try to send our view size to the 2656 // native side to ensure that WebCore has the correct dimensions. 2657 sendViewSizeZoom(); 2658 } 2659 } 2660 2661 /** 2662 * Set the WebViewClient that will receive various notifications and 2663 * requests. This will replace the current handler. 2664 * @param client An implementation of WebViewClient. 2665 */ 2666 public void setWebViewClient(WebViewClient client) { 2667 mCallbackProxy.setWebViewClient(client); 2668 } 2669 2670 /** 2671 * Register the interface to be used when content can not be handled by 2672 * the rendering engine, and should be downloaded instead. This will replace 2673 * the current handler. 2674 * @param listener An implementation of DownloadListener. 2675 */ 2676 public void setDownloadListener(DownloadListener listener) { 2677 mCallbackProxy.setDownloadListener(listener); 2678 } 2679 2680 /** 2681 * Set the chrome handler. This is an implementation of WebChromeClient for 2682 * use in handling Javascript dialogs, favicons, titles, and the progress. 2683 * This will replace the current handler. 2684 * @param client An implementation of WebChromeClient. 2685 */ 2686 public void setWebChromeClient(WebChromeClient client) { 2687 mCallbackProxy.setWebChromeClient(client); 2688 } 2689 2690 /** 2691 * Gets the chrome handler. 2692 * @return the current WebChromeClient instance. 2693 * 2694 * @hide API council approval. 2695 */ 2696 public WebChromeClient getWebChromeClient() { 2697 return mCallbackProxy.getWebChromeClient(); 2698 } 2699 2700 /** 2701 * Set the Picture listener. This is an interface used to receive 2702 * notifications of a new Picture. 2703 * @param listener An implementation of WebView.PictureListener. 2704 */ 2705 public void setPictureListener(PictureListener listener) { 2706 mPictureListener = listener; 2707 } 2708 2709 /** 2710 * {@hide} 2711 */ 2712 /* FIXME: Debug only! Remove for SDK! */ 2713 public void externalRepresentation(Message callback) { 2714 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2715 } 2716 2717 /** 2718 * {@hide} 2719 */ 2720 /* FIXME: Debug only! Remove for SDK! */ 2721 public void documentAsText(Message callback) { 2722 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2723 } 2724 2725 /** 2726 * Use this function to bind an object to Javascript so that the 2727 * methods can be accessed from Javascript. 2728 * <p><strong>IMPORTANT:</strong> 2729 * <ul> 2730 * <li> Using addJavascriptInterface() allows JavaScript to control your 2731 * application. This can be a very useful feature or a dangerous security 2732 * issue. When the HTML in the WebView is untrustworthy (for example, part 2733 * or all of the HTML is provided by some person or process), then an 2734 * attacker could inject HTML that will execute your code and possibly any 2735 * code of the attacker's choosing.<br> 2736 * Do not use addJavascriptInterface() unless all of the HTML in this 2737 * WebView was written by you.</li> 2738 * <li> The Java object that is bound runs in another thread and not in 2739 * the thread that it was constructed in.</li> 2740 * </ul></p> 2741 * @param obj The class instance to bind to Javascript 2742 * @param interfaceName The name to used to expose the class in Javascript 2743 */ 2744 public void addJavascriptInterface(Object obj, String interfaceName) { 2745 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2746 arg.mObject = obj; 2747 arg.mInterfaceName = interfaceName; 2748 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2749 } 2750 2751 /** 2752 * Return the WebSettings object used to control the settings for this 2753 * WebView. 2754 * @return A WebSettings object that can be used to control this WebView's 2755 * settings. 2756 */ 2757 public WebSettings getSettings() { 2758 return mWebViewCore.getSettings(); 2759 } 2760 2761 /** 2762 * Return the list of currently loaded plugins. 2763 * @return The list of currently loaded plugins. 2764 * 2765 * @deprecated This was used for Gears, which has been deprecated. 2766 */ 2767 @Deprecated 2768 public static synchronized PluginList getPluginList() { 2769 return new PluginList(); 2770 } 2771 2772 /** 2773 * @deprecated This was used for Gears, which has been deprecated. 2774 */ 2775 @Deprecated 2776 public void refreshPlugins(boolean reloadOpenPages) { } 2777 2778 //------------------------------------------------------------------------- 2779 // Override View methods 2780 //------------------------------------------------------------------------- 2781 2782 @Override 2783 protected void finalize() throws Throwable { 2784 try { 2785 destroy(); 2786 } finally { 2787 super.finalize(); 2788 } 2789 } 2790 2791 @Override 2792 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 2793 if (child == mTitleBar) { 2794 // When drawing the title bar, move it horizontally to always show 2795 // at the top of the WebView. 2796 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 2797 } 2798 return super.drawChild(canvas, child, drawingTime); 2799 } 2800 2801 private void drawContent(Canvas canvas) { 2802 // Update the buttons in the picture, so when we draw the picture 2803 // to the screen, they are in the correct state. 2804 // Tell the native side if user is a) touching the screen, 2805 // b) pressing the trackball down, or c) pressing the enter key 2806 // If the cursor is on a button, we need to draw it in the pressed 2807 // state. 2808 // If mNativeClass is 0, we should not reach here, so we do not 2809 // need to check it again. 2810 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2811 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2812 || mTrackballDown || mGotCenterDown, false); 2813 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2814 } 2815 2816 @Override 2817 protected void onDraw(Canvas canvas) { 2818 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2819 if (mNativeClass == 0) { 2820 return; 2821 } 2822 int saveCount = canvas.save(); 2823 if (mTitleBar != null) { 2824 canvas.translate(0, (int) mTitleBar.getHeight()); 2825 } 2826 if (mDragTrackerHandler == null || !mDragTrackerHandler.draw(canvas)) { 2827 drawContent(canvas); 2828 } 2829 canvas.restoreToCount(saveCount); 2830 2831 // Now draw the shadow. 2832 if (mTitleBar != null) { 2833 int y = mScrollY + getVisibleTitleHeight(); 2834 int height = (int) (5f * getContext().getResources() 2835 .getDisplayMetrics().density); 2836 mTitleShadow.setBounds(mScrollX, y, mScrollX + getWidth(), 2837 y + height); 2838 mTitleShadow.draw(canvas); 2839 } 2840 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2841 invalidate(); 2842 } 2843 } 2844 2845 @Override 2846 public void setLayoutParams(ViewGroup.LayoutParams params) { 2847 if (params.height == LayoutParams.WRAP_CONTENT) { 2848 mWrapContent = true; 2849 } 2850 super.setLayoutParams(params); 2851 } 2852 2853 @Override 2854 public boolean performLongClick() { 2855 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 2856 // Send the click so that the textfield is in focus 2857 // FIXME: When we start respecting changes to the native textfield's 2858 // selection, need to make sure that this does not change it. 2859 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 2860 nativeCursorNodePointer()); 2861 rebuildWebTextView(); 2862 } 2863 if (inEditingMode()) { 2864 return mWebTextView.performLongClick(); 2865 } else { 2866 return super.performLongClick(); 2867 } 2868 } 2869 2870 boolean inAnimateZoom() { 2871 return mZoomScale != 0; 2872 } 2873 2874 /** 2875 * Need to adjust the WebTextView after a change in zoom, since mActualScale 2876 * has changed. This is especially important for password fields, which are 2877 * drawn by the WebTextView, since it conveys more information than what 2878 * webkit draws. Thus we need to reposition it to show in the correct 2879 * place. 2880 */ 2881 private boolean mNeedToAdjustWebTextView; 2882 2883 // if checkVisibility is false, the WebTextView may trigger a move of 2884 // WebView to bring itself into the view. 2885 private void adjustTextView(boolean checkVisibility) { 2886 Rect contentBounds = nativeFocusCandidateNodeBounds(); 2887 Rect vBox = contentToViewRect(contentBounds); 2888 Rect visibleRect = new Rect(); 2889 calcOurVisibleRect(visibleRect); 2890 if (!checkVisibility || visibleRect.contains(vBox)) { 2891 // As a result of the zoom, the textfield is now on 2892 // screen. Place the WebTextView in its new place, 2893 // accounting for our new scroll/zoom values. 2894 mWebTextView 2895 .setTextSize( 2896 TypedValue.COMPLEX_UNIT_PX, 2897 contentToViewDimension(nativeFocusCandidateTextSize())); 2898 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 2899 vBox.height()); 2900 // If it is a password field, start drawing the 2901 // WebTextView once again. 2902 if (nativeFocusCandidateIsPassword()) { 2903 mWebTextView.setInPassword(true); 2904 } 2905 } else { 2906 // The textfield is now off screen. The user probably 2907 // was not zooming to see the textfield better. Remove 2908 // the WebTextView. If the user types a key, and the 2909 // textfield is still in focus, we will reconstruct 2910 // the WebTextView and scroll it back on screen. 2911 mWebTextView.remove(); 2912 } 2913 } 2914 2915 private void drawCoreAndCursorRing(Canvas canvas, int color, 2916 boolean drawCursorRing) { 2917 if (mDrawHistory) { 2918 canvas.scale(mActualScale, mActualScale); 2919 canvas.drawPicture(mHistoryPicture); 2920 return; 2921 } 2922 2923 boolean animateZoom = mZoomScale != 0; 2924 boolean animateScroll = !mScroller.isFinished() 2925 || mVelocityTracker != null; 2926 if (animateZoom) { 2927 float zoomScale; 2928 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 2929 if (interval < ZOOM_ANIMATION_LENGTH) { 2930 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 2931 zoomScale = 1.0f / (mInvInitialZoomScale 2932 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 2933 invalidate(); 2934 } else { 2935 zoomScale = mZoomScale; 2936 // set mZoomScale to be 0 as we have done animation 2937 mZoomScale = 0; 2938 // call invalidate() again to draw with the final filters 2939 invalidate(); 2940 if (mNeedToAdjustWebTextView) { 2941 mNeedToAdjustWebTextView = false; 2942 adjustTextView(true); 2943 } 2944 } 2945 // calculate the intermediate scroll position. As we need to use 2946 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 2947 float scale = zoomScale * mInvInitialZoomScale; 2948 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 2949 - mZoomCenterX); 2950 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 2951 * zoomScale)) + mScrollX; 2952 int titleHeight = getTitleHeight(); 2953 int ty = Math.round(scale 2954 * (mInitialScrollY + mZoomCenterY - titleHeight) 2955 - (mZoomCenterY - titleHeight)); 2956 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 2957 - titleHeight, getViewHeight(), Math.round(mContentHeight 2958 * zoomScale)) + titleHeight) + mScrollY; 2959 canvas.translate(tx, ty); 2960 canvas.scale(zoomScale, zoomScale); 2961 if (inEditingMode() && !mNeedToAdjustWebTextView 2962 && mZoomScale != 0) { 2963 // The WebTextView is up. Keep track of this so we can adjust 2964 // its size and placement when we finish zooming 2965 mNeedToAdjustWebTextView = true; 2966 // If it is in password mode, turn it off so it does not draw 2967 // misplaced. 2968 if (nativeFocusCandidateIsPassword()) { 2969 mWebTextView.setInPassword(false); 2970 } 2971 } 2972 } else { 2973 canvas.scale(mActualScale, mActualScale); 2974 } 2975 2976 mWebViewCore.drawContentPicture(canvas, color, 2977 (animateZoom || mPreviewZoomOnly), animateScroll); 2978 2979 if (mNativeClass == 0) return; 2980 if (mShiftIsPressed && !(animateZoom || mPreviewZoomOnly)) { 2981 if (mTouchSelection) { 2982 nativeDrawSelectionRegion(canvas); 2983 } else { 2984 nativeDrawSelection(canvas, mInvActualScale, getTitleHeight(), 2985 mSelectX, mSelectY, mExtendSelection); 2986 } 2987 } else if (drawCursorRing) { 2988 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 2989 mTouchMode = TOUCH_SHORTPRESS_MODE; 2990 HitTestResult hitTest = getHitTestResult(); 2991 if (hitTest != null && 2992 hitTest.mType != HitTestResult.UNKNOWN_TYPE) { 2993 mPrivateHandler.sendMessageDelayed(mPrivateHandler 2994 .obtainMessage(SWITCH_TO_LONGPRESS), 2995 LONG_PRESS_TIMEOUT); 2996 } 2997 } 2998 nativeDrawCursorRing(canvas); 2999 } 3000 // When the FindDialog is up, only draw the matches if we are not in 3001 // the process of scrolling them into view. 3002 if (mFindIsUp && !animateScroll) { 3003 nativeDrawMatches(canvas); 3004 } 3005 } 3006 3007 // draw history 3008 private boolean mDrawHistory = false; 3009 private Picture mHistoryPicture = null; 3010 private int mHistoryWidth = 0; 3011 private int mHistoryHeight = 0; 3012 3013 // Only check the flag, can be called from WebCore thread 3014 boolean drawHistory() { 3015 return mDrawHistory; 3016 } 3017 3018 // Should only be called in UI thread 3019 void switchOutDrawHistory() { 3020 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3021 if (mDrawHistory && mWebViewCore.pictureReady()) { 3022 mDrawHistory = false; 3023 invalidate(); 3024 int oldScrollX = mScrollX; 3025 int oldScrollY = mScrollY; 3026 mScrollX = pinLocX(mScrollX); 3027 mScrollY = pinLocY(mScrollY); 3028 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3029 mUserScroll = false; 3030 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3031 oldScrollY); 3032 } 3033 sendOurVisibleRect(); 3034 } 3035 } 3036 3037 WebViewCore.CursorData cursorData() { 3038 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3039 result.mMoveGeneration = nativeMoveGeneration(); 3040 result.mFrame = nativeCursorFramePointer(); 3041 Point position = nativeCursorPosition(); 3042 result.mX = position.x; 3043 result.mY = position.y; 3044 return result; 3045 } 3046 3047 /** 3048 * Delete text from start to end in the focused textfield. If there is no 3049 * focus, or if start == end, silently fail. If start and end are out of 3050 * order, swap them. 3051 * @param start Beginning of selection to delete. 3052 * @param end End of selection to delete. 3053 */ 3054 /* package */ void deleteSelection(int start, int end) { 3055 mTextGeneration++; 3056 WebViewCore.TextSelectionData data 3057 = new WebViewCore.TextSelectionData(start, end); 3058 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3059 data); 3060 } 3061 3062 /** 3063 * Set the selection to (start, end) in the focused textfield. If start and 3064 * end are out of order, swap them. 3065 * @param start Beginning of selection. 3066 * @param end End of selection. 3067 */ 3068 /* package */ void setSelection(int start, int end) { 3069 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3070 } 3071 3072 // Called by JNI when a touch event puts a textfield into focus. 3073 private void displaySoftKeyboard(boolean isTextView) { 3074 InputMethodManager imm = (InputMethodManager) 3075 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3076 3077 if (isTextView) { 3078 if (mWebTextView == null) return; 3079 3080 imm.showSoftInput(mWebTextView, 0); 3081 if (mActualScale < mDefaultScale) { 3082 // bring it back to the default scale so that user can enter 3083 // text. 3084 mInZoomOverview = false; 3085 mZoomCenterX = mLastTouchX; 3086 mZoomCenterY = mLastTouchY; 3087 // do not change text wrap scale so that there is no reflow 3088 setNewZoomScale(mDefaultScale, false, false); 3089 adjustTextView(false); 3090 } 3091 } 3092 else { // used by plugins 3093 imm.showSoftInput(this, 0); 3094 } 3095 } 3096 3097 // Called by WebKit to instruct the UI to hide the keyboard 3098 private void hideSoftKeyboard() { 3099 InputMethodManager imm = (InputMethodManager) 3100 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3101 3102 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3103 } 3104 3105 /* 3106 * This method checks the current focus and cursor and potentially rebuilds 3107 * mWebTextView to have the appropriate properties, such as password, 3108 * multiline, and what text it contains. It also removes it if necessary. 3109 */ 3110 /* package */ void rebuildWebTextView() { 3111 // If the WebView does not have focus, do nothing until it gains focus. 3112 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3113 return; 3114 } 3115 boolean alreadyThere = inEditingMode(); 3116 // inEditingMode can only return true if mWebTextView is non-null, 3117 // so we can safely call remove() if (alreadyThere) 3118 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3119 if (alreadyThere) { 3120 mWebTextView.remove(); 3121 } 3122 return; 3123 } 3124 // At this point, we know we have found an input field, so go ahead 3125 // and create the WebTextView if necessary. 3126 if (mWebTextView == null) { 3127 mWebTextView = new WebTextView(mContext, WebView.this); 3128 // Initialize our generation number. 3129 mTextGeneration = 0; 3130 } 3131 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3132 contentToViewDimension(nativeFocusCandidateTextSize())); 3133 Rect visibleRect = new Rect(); 3134 calcOurContentVisibleRect(visibleRect); 3135 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3136 // should be in content coordinates. 3137 Rect bounds = nativeFocusCandidateNodeBounds(); 3138 if (!Rect.intersects(bounds, visibleRect)) { 3139 mWebTextView.bringIntoView(); 3140 } 3141 String text = nativeFocusCandidateText(); 3142 int nodePointer = nativeFocusCandidatePointer(); 3143 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3144 // It is possible that we have the same textfield, but it has moved, 3145 // i.e. In the case of opening/closing the screen. 3146 // In that case, we need to set the dimensions, but not the other 3147 // aspects. 3148 // We also need to restore the selection, which gets wrecked by 3149 // calling setTextEntryRect. 3150 Spannable spannable = (Spannable) mWebTextView.getText(); 3151 int start = Selection.getSelectionStart(spannable); 3152 int end = Selection.getSelectionEnd(spannable); 3153 // If the text has been changed by webkit, update it. However, if 3154 // there has been more UI text input, ignore it. We will receive 3155 // another update when that text is recognized. 3156 if (text != null && !text.equals(spannable.toString()) 3157 && nativeTextGeneration() == mTextGeneration) { 3158 mWebTextView.setTextAndKeepSelection(text); 3159 } else { 3160 Selection.setSelection(spannable, start, end); 3161 } 3162 } else { 3163 Rect vBox = contentToViewRect(bounds); 3164 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3165 vBox.height()); 3166 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3167 Gravity.RIGHT : Gravity.NO_GRAVITY); 3168 // this needs to be called before update adapter thread starts to 3169 // ensure the mWebTextView has the same node pointer 3170 mWebTextView.setNodePointer(nodePointer); 3171 int maxLength = -1; 3172 boolean isTextField = nativeFocusCandidateIsTextField(); 3173 if (isTextField) { 3174 maxLength = nativeFocusCandidateMaxLength(); 3175 String name = nativeFocusCandidateName(); 3176 if (mWebViewCore.getSettings().getSaveFormData() 3177 && name != null) { 3178 Message update = mPrivateHandler.obtainMessage( 3179 REQUEST_FORM_DATA, nodePointer); 3180 RequestFormData updater = new RequestFormData(name, 3181 getUrl(), update); 3182 Thread t = new Thread(updater); 3183 t.start(); 3184 } 3185 } 3186 mWebTextView.setMaxLength(maxLength); 3187 AutoCompleteAdapter adapter = null; 3188 mWebTextView.setAdapterCustom(adapter); 3189 mWebTextView.setSingleLine(isTextField); 3190 mWebTextView.setInPassword(nativeFocusCandidateIsPassword()); 3191 if (null == text) { 3192 mWebTextView.setText("", 0, 0); 3193 if (DebugFlags.WEB_VIEW) { 3194 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3195 } 3196 } else { 3197 // Change to true to enable the old style behavior, where 3198 // entering a textfield/textarea always set the selection to the 3199 // whole field. This was desirable for the case where the user 3200 // intends to scroll past the field using the trackball. 3201 // However, it causes a problem when replying to emails - the 3202 // user expects the cursor to be at the beginning of the 3203 // textarea. Testing out a new behavior, where textfields set 3204 // selection at the end, and textareas at the beginning. 3205 if (false) { 3206 mWebTextView.setText(text, 0, text.length()); 3207 } else if (isTextField) { 3208 int length = text.length(); 3209 mWebTextView.setText(text, length, length); 3210 if (DebugFlags.WEB_VIEW) { 3211 Log.v(LOGTAG, "rebuildWebTextView length=" + length); 3212 } 3213 } else { 3214 mWebTextView.setText(text, 0, 0); 3215 if (DebugFlags.WEB_VIEW) { 3216 Log.v(LOGTAG, "rebuildWebTextView !isTextField"); 3217 } 3218 } 3219 } 3220 mWebTextView.requestFocus(); 3221 } 3222 } 3223 3224 /* 3225 * This class requests an Adapter for the WebTextView which shows past 3226 * entries stored in the database. It is a Runnable so that it can be done 3227 * in its own thread, without slowing down the UI. 3228 */ 3229 private class RequestFormData implements Runnable { 3230 private String mName; 3231 private String mUrl; 3232 private Message mUpdateMessage; 3233 3234 public RequestFormData(String name, String url, Message msg) { 3235 mName = name; 3236 mUrl = url; 3237 mUpdateMessage = msg; 3238 } 3239 3240 public void run() { 3241 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3242 if (pastEntries.size() > 0) { 3243 AutoCompleteAdapter adapter = new 3244 AutoCompleteAdapter(mContext, pastEntries); 3245 mUpdateMessage.obj = adapter; 3246 mUpdateMessage.sendToTarget(); 3247 } 3248 } 3249 } 3250 3251 // This is used to determine long press with the center key. Does not 3252 // affect long press with the trackball/touch. 3253 private boolean mGotCenterDown = false; 3254 3255 @Override 3256 public boolean onKeyDown(int keyCode, KeyEvent event) { 3257 if (DebugFlags.WEB_VIEW) { 3258 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3259 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3260 } 3261 3262 if (mNativeClass == 0) { 3263 return false; 3264 } 3265 3266 // do this hack up front, so it always works, regardless of touch-mode 3267 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3268 mAutoRedraw = !mAutoRedraw; 3269 if (mAutoRedraw) { 3270 invalidate(); 3271 } 3272 return true; 3273 } 3274 3275 // Bubble up the key event if 3276 // 1. it is a system key; or 3277 // 2. the host application wants to handle it; 3278 if (event.isSystem() 3279 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3280 return false; 3281 } 3282 3283 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3284 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3285 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3286 mExtendSelection = false; 3287 mShiftIsPressed = true; 3288 if (nativeHasCursorNode()) { 3289 Rect rect = nativeCursorNodeBounds(); 3290 mSelectX = contentToViewX(rect.left); 3291 mSelectY = contentToViewY(rect.top); 3292 } else { 3293 mSelectX = mScrollX + (int) mLastTouchX; 3294 mSelectY = mScrollY + (int) mLastTouchY; 3295 } 3296 nativeHideCursor(); 3297 } 3298 3299 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3300 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3301 // always handle the navigation keys in the UI thread 3302 switchOutDrawHistory(); 3303 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3304 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3305 return true; 3306 } 3307 // Bubble up the key event as WebView doesn't handle it 3308 return false; 3309 } 3310 3311 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3312 switchOutDrawHistory(); 3313 if (event.getRepeatCount() == 0) { 3314 mGotCenterDown = true; 3315 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3316 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3317 // Already checked mNativeClass, so we do not need to check it 3318 // again. 3319 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3320 return true; 3321 } 3322 // Bubble up the key event as WebView doesn't handle it 3323 return false; 3324 } 3325 3326 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3327 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3328 // turn off copy select if a shift-key combo is pressed 3329 mExtendSelection = mShiftIsPressed = false; 3330 if (mTouchMode == TOUCH_SELECT_MODE) { 3331 mTouchMode = TOUCH_INIT_MODE; 3332 } 3333 } 3334 3335 if (getSettings().getNavDump()) { 3336 switch (keyCode) { 3337 case KeyEvent.KEYCODE_4: 3338 // "/data/data/com.android.browser/displayTree.txt" 3339 nativeDumpDisplayTree(getUrl()); 3340 break; 3341 case KeyEvent.KEYCODE_5: 3342 case KeyEvent.KEYCODE_6: 3343 // 5: dump the dom tree to the file 3344 // "/data/data/com.android.browser/domTree.txt" 3345 // 6: dump the dom tree to the adb log 3346 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, 3347 (keyCode == KeyEvent.KEYCODE_5) ? 1 : 0, 0); 3348 break; 3349 case KeyEvent.KEYCODE_7: 3350 case KeyEvent.KEYCODE_8: 3351 // 7: dump the render tree to the file 3352 // "/data/data/com.android.browser/renderTree.txt" 3353 // 8: dump the render tree to the adb log 3354 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, 3355 (keyCode == KeyEvent.KEYCODE_7) ? 1 : 0, 0); 3356 break; 3357 case KeyEvent.KEYCODE_9: 3358 nativeInstrumentReport(); 3359 return true; 3360 } 3361 } 3362 3363 if (nativeCursorIsPlugin()) { 3364 nativeUpdatePluginReceivesEvents(); 3365 invalidate(); 3366 } else if (nativeCursorIsTextInput()) { 3367 // This message will put the node in focus, for the DOM's notion 3368 // of focus, and make the focuscontroller active 3369 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3370 nativeCursorNodePointer()); 3371 // This will bring up the WebTextView and put it in focus, for 3372 // our view system's notion of focus 3373 rebuildWebTextView(); 3374 // Now we need to pass the event to it 3375 return mWebTextView.onKeyDown(keyCode, event); 3376 } else if (nativeHasFocusNode()) { 3377 // In this case, the cursor is not on a text input, but the focus 3378 // might be. Check it, and if so, hand over to the WebTextView. 3379 rebuildWebTextView(); 3380 if (inEditingMode()) { 3381 return mWebTextView.onKeyDown(keyCode, event); 3382 } 3383 } 3384 3385 // TODO: should we pass all the keys to DOM or check the meta tag 3386 if (nativeCursorWantsKeyEvents() || true) { 3387 // pass the key to DOM 3388 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3389 // return true as DOM handles the key 3390 return true; 3391 } 3392 3393 // Bubble up the key event as WebView doesn't handle it 3394 return false; 3395 } 3396 3397 @Override 3398 public boolean onKeyUp(int keyCode, KeyEvent event) { 3399 if (DebugFlags.WEB_VIEW) { 3400 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3401 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3402 } 3403 3404 if (mNativeClass == 0) { 3405 return false; 3406 } 3407 3408 // special CALL handling when cursor node's href is "tel:XXX" 3409 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3410 String text = nativeCursorText(); 3411 if (!nativeCursorIsTextInput() && text != null 3412 && text.startsWith(SCHEME_TEL)) { 3413 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3414 getContext().startActivity(intent); 3415 return true; 3416 } 3417 } 3418 3419 // Bubble up the key event if 3420 // 1. it is a system key; or 3421 // 2. the host application wants to handle it; 3422 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3423 return false; 3424 } 3425 3426 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3427 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3428 if (commitCopy()) { 3429 return true; 3430 } 3431 } 3432 3433 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3434 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3435 // always handle the navigation keys in the UI thread 3436 // Bubble up the key event as WebView doesn't handle it 3437 return false; 3438 } 3439 3440 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3441 // remove the long press message first 3442 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3443 mGotCenterDown = false; 3444 3445 if (mShiftIsPressed) { 3446 return false; 3447 } 3448 3449 // perform the single click 3450 Rect visibleRect = sendOurVisibleRect(); 3451 // Note that sendOurVisibleRect calls viewToContent, so the 3452 // coordinates should be in content coordinates. 3453 if (!nativeCursorIntersects(visibleRect)) { 3454 return false; 3455 } 3456 nativeSetFollowedLink(true); 3457 nativeUpdatePluginReceivesEvents(); 3458 WebViewCore.CursorData data = cursorData(); 3459 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3460 playSoundEffect(SoundEffectConstants.CLICK); 3461 boolean isTextInput = nativeCursorIsTextInput(); 3462 if (isTextInput || !mCallbackProxy.uiOverrideUrlLoading( 3463 nativeCursorText())) { 3464 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3465 nativeCursorNodePointer()); 3466 } 3467 if (isTextInput) { 3468 rebuildWebTextView(); 3469 displaySoftKeyboard(true); 3470 } 3471 return true; 3472 } 3473 3474 // TODO: should we pass all the keys to DOM or check the meta tag 3475 if (nativeCursorWantsKeyEvents() || true) { 3476 // pass the key to DOM 3477 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3478 // return true as DOM handles the key 3479 return true; 3480 } 3481 3482 // Bubble up the key event as WebView doesn't handle it 3483 return false; 3484 } 3485 3486 /** 3487 * @hide 3488 */ 3489 public void emulateShiftHeld() { 3490 if (0 == mNativeClass) return; // client isn't initialized 3491 mExtendSelection = false; 3492 mShiftIsPressed = true; 3493 nativeHideCursor(); 3494 } 3495 3496 private boolean commitCopy() { 3497 boolean copiedSomething = false; 3498 if (mExtendSelection) { 3499 // copy region so core operates on copy without touching orig. 3500 Region selection = new Region(nativeGetSelection()); 3501 if (selection.isEmpty() == false) { 3502 Toast.makeText(mContext 3503 , com.android.internal.R.string.text_copied 3504 , Toast.LENGTH_SHORT).show(); 3505 mWebViewCore.sendMessage(EventHub.GET_SELECTION, selection); 3506 copiedSomething = true; 3507 } 3508 mExtendSelection = false; 3509 } 3510 mShiftIsPressed = false; 3511 if (mTouchMode == TOUCH_SELECT_MODE) { 3512 mTouchMode = TOUCH_INIT_MODE; 3513 } 3514 return copiedSomething; 3515 } 3516 3517 // Set this as a hierarchy change listener so we can know when this view 3518 // is removed and still have access to our parent. 3519 @Override 3520 protected void onAttachedToWindow() { 3521 super.onAttachedToWindow(); 3522 ViewParent parent = getParent(); 3523 if (parent instanceof ViewGroup) { 3524 ViewGroup p = (ViewGroup) parent; 3525 p.setOnHierarchyChangeListener(this); 3526 } 3527 } 3528 3529 @Override 3530 protected void onDetachedFromWindow() { 3531 super.onDetachedFromWindow(); 3532 ViewParent parent = getParent(); 3533 if (parent instanceof ViewGroup) { 3534 ViewGroup p = (ViewGroup) parent; 3535 p.setOnHierarchyChangeListener(null); 3536 } 3537 3538 // Clean up the zoom controller 3539 mZoomButtonsController.setVisible(false); 3540 } 3541 3542 // Implementation for OnHierarchyChangeListener 3543 public void onChildViewAdded(View parent, View child) {} 3544 3545 public void onChildViewRemoved(View p, View child) { 3546 if (child == this) { 3547 clearTextEntry(); 3548 } 3549 } 3550 3551 /** 3552 * @deprecated WebView should not have implemented 3553 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3554 * does nothing now. 3555 */ 3556 @Deprecated 3557 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3558 } 3559 3560 // To avoid drawing the cursor ring, and remove the TextView when our window 3561 // loses focus. 3562 @Override 3563 public void onWindowFocusChanged(boolean hasWindowFocus) { 3564 if (hasWindowFocus) { 3565 if (hasFocus()) { 3566 // If our window regained focus, and we have focus, then begin 3567 // drawing the cursor ring 3568 mDrawCursorRing = true; 3569 if (mNativeClass != 0) { 3570 nativeRecordButtons(true, false, true); 3571 if (inEditingMode()) { 3572 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3573 } 3574 } 3575 } else { 3576 // If our window gained focus, but we do not have it, do not 3577 // draw the cursor ring. 3578 mDrawCursorRing = false; 3579 // We do not call nativeRecordButtons here because we assume 3580 // that when we lost focus, or window focus, it got called with 3581 // false for the first parameter 3582 } 3583 } else { 3584 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3585 /* 3586 * The zoom controls come in their own window, so our window 3587 * loses focus. Our policy is to not draw the cursor ring if 3588 * our window is not focused, but this is an exception since 3589 * the user can still navigate the web page with the zoom 3590 * controls showing. 3591 */ 3592 // If our window has lost focus, stop drawing the cursor ring 3593 mDrawCursorRing = false; 3594 } 3595 mGotKeyDown = false; 3596 mShiftIsPressed = false; 3597 if (mNativeClass != 0) { 3598 nativeRecordButtons(false, false, true); 3599 } 3600 setFocusControllerInactive(); 3601 } 3602 invalidate(); 3603 super.onWindowFocusChanged(hasWindowFocus); 3604 } 3605 3606 /* 3607 * Pass a message to WebCore Thread, telling the WebCore::Page's 3608 * FocusController to be "inactive" so that it will 3609 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3610 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3611 */ 3612 /* package */ void setFocusControllerInactive() { 3613 // Do not need to also check whether mWebViewCore is null, because 3614 // mNativeClass is only set if mWebViewCore is non null 3615 if (mNativeClass == 0) return; 3616 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3617 } 3618 3619 @Override 3620 protected void onFocusChanged(boolean focused, int direction, 3621 Rect previouslyFocusedRect) { 3622 if (DebugFlags.WEB_VIEW) { 3623 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3624 } 3625 if (focused) { 3626 // When we regain focus, if we have window focus, resume drawing 3627 // the cursor ring 3628 if (hasWindowFocus()) { 3629 mDrawCursorRing = true; 3630 if (mNativeClass != 0) { 3631 nativeRecordButtons(true, false, true); 3632 } 3633 //} else { 3634 // The WebView has gained focus while we do not have 3635 // windowfocus. When our window lost focus, we should have 3636 // called nativeRecordButtons(false...) 3637 } 3638 } else { 3639 // When we lost focus, unless focus went to the TextView (which is 3640 // true if we are in editing mode), stop drawing the cursor ring. 3641 if (!inEditingMode()) { 3642 mDrawCursorRing = false; 3643 if (mNativeClass != 0) { 3644 nativeRecordButtons(false, false, true); 3645 } 3646 setFocusControllerInactive(); 3647 } 3648 mGotKeyDown = false; 3649 } 3650 3651 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3652 } 3653 3654 @Override 3655 protected void onSizeChanged(int w, int h, int ow, int oh) { 3656 super.onSizeChanged(w, h, ow, oh); 3657 // Center zooming to the center of the screen. 3658 if (mZoomScale == 0) { // unless we're already zooming 3659 mZoomCenterX = getViewWidth() * .5f; 3660 mZoomCenterY = getViewHeight() * .5f; 3661 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 3662 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 3663 } 3664 3665 // update mMinZoomScale if the minimum zoom scale is not fixed 3666 if (!mMinZoomScaleFixed) { 3667 // when change from narrow screen to wide screen, the new viewWidth 3668 // can be wider than the old content width. We limit the minimum 3669 // scale to 1.0f. The proper minimum scale will be calculated when 3670 // the new picture shows up. 3671 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 3672 / (mDrawHistory ? mHistoryPicture.getWidth() 3673 : mZoomOverviewWidth)); 3674 if (mInitialScaleInPercent > 0) { 3675 // limit the minZoomScale to the initialScale if it is set 3676 float initialScale = mInitialScaleInPercent / 100.0f; 3677 if (mMinZoomScale > initialScale) { 3678 mMinZoomScale = initialScale; 3679 } 3680 } 3681 } 3682 3683 // we always force, in case our height changed, in which case we still 3684 // want to send the notification over to webkit 3685 // only update the text wrap scale if width changed. 3686 setNewZoomScale(mActualScale, w != ow, true); 3687 } 3688 3689 @Override 3690 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3691 super.onScrollChanged(l, t, oldl, oldt); 3692 3693 sendOurVisibleRect(); 3694 } 3695 3696 3697 @Override 3698 public boolean dispatchKeyEvent(KeyEvent event) { 3699 boolean dispatch = true; 3700 3701 if (!inEditingMode()) { 3702 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3703 mGotKeyDown = true; 3704 } else { 3705 if (!mGotKeyDown) { 3706 /* 3707 * We got a key up for which we were not the recipient of 3708 * the original key down. Don't give it to the view. 3709 */ 3710 dispatch = false; 3711 } 3712 mGotKeyDown = false; 3713 } 3714 } 3715 3716 if (dispatch) { 3717 return super.dispatchKeyEvent(event); 3718 } else { 3719 // We didn't dispatch, so let something else handle the key 3720 return false; 3721 } 3722 } 3723 3724 // Here are the snap align logic: 3725 // 1. If it starts nearly horizontally or vertically, snap align; 3726 // 2. If there is a dramitic direction change, let it go; 3727 // 3. If there is a same direction back and forth, lock it. 3728 3729 // adjustable parameters 3730 private int mMinLockSnapReverseDistance; 3731 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 3732 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 3733 3734 private class ScaleDetectorListener implements 3735 ScaleGestureDetector.OnScaleGestureListener { 3736 3737 public boolean onScaleBegin(ScaleGestureDetector detector) { 3738 // cancel the single touch handling 3739 cancelTouch(); 3740 if (mZoomButtonsController.isVisible()) { 3741 mZoomButtonsController.setVisible(false); 3742 } 3743 // reset the zoom overview mode so that the page won't auto grow 3744 mInZoomOverview = false; 3745 // If it is in password mode, turn it off so it does not draw 3746 // misplaced. 3747 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3748 mWebTextView.setInPassword(false); 3749 } 3750 return true; 3751 } 3752 3753 public void onScaleEnd(ScaleGestureDetector detector) { 3754 if (mPreviewZoomOnly) { 3755 mPreviewZoomOnly = false; 3756 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 3757 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 3758 // don't reflow when zoom in; when zoom out, do reflow if the 3759 // new scale is almost minimum scale; 3760 boolean reflowNow = (mActualScale - mMinZoomScale <= 0.01f) 3761 || ((mActualScale <= 0.8 * mTextWrapScale)); 3762 // force zoom after mPreviewZoomOnly is set to false so that the 3763 // new view size will be passed to the WebKit 3764 setNewZoomScale(mActualScale, reflowNow, true); 3765 // call invalidate() to draw without zoom filter 3766 invalidate(); 3767 } 3768 // adjust the edit text view if needed 3769 if (inEditingMode()) { 3770 adjustTextView(true); 3771 } 3772 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 3773 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 3774 // may trigger the unwanted fling. 3775 mTouchMode = TOUCH_PINCH_DRAG; 3776 startTouch(detector.getFocusX(), detector.getFocusY(), 3777 mLastTouchTime); 3778 } 3779 3780 public boolean onScale(ScaleGestureDetector detector) { 3781 float scale = (float) (Math.round(detector.getScaleFactor() 3782 * mActualScale * 100) / 100.0); 3783 if (Math.abs(scale - mActualScale) >= PREVIEW_SCALE_INCREMENT) { 3784 mPreviewZoomOnly = true; 3785 // limit the scale change per step 3786 if (scale > mActualScale) { 3787 scale = Math.min(scale, mActualScale * 1.25f); 3788 } else { 3789 scale = Math.max(scale, mActualScale * 0.8f); 3790 } 3791 mZoomCenterX = detector.getFocusX(); 3792 mZoomCenterY = detector.getFocusY(); 3793 setNewZoomScale(scale, false, false); 3794 invalidate(); 3795 return true; 3796 } 3797 return false; 3798 } 3799 } 3800 3801 // if the page can scroll <= this value, we won't allow the drag tracker 3802 // to have any effect. 3803 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 3804 3805 private class DragTrackerHandler { 3806 private final DragTracker mProxy; 3807 private final float mStartY, mStartX; 3808 private final float mMinDY, mMinDX; 3809 private final float mMaxDY, mMaxDX; 3810 private float mCurrStretchY, mCurrStretchX; 3811 private int mSX, mSY; 3812 3813 public DragTrackerHandler(float x, float y, DragTracker proxy) { 3814 mProxy = proxy; 3815 3816 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 3817 int viewTop = getScrollY(); 3818 int viewBottom = viewTop + getHeight(); 3819 3820 mStartY = y; 3821 mMinDY = -viewTop; 3822 mMaxDY = docBottom - viewBottom; 3823 3824 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 3825 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 3826 " up/down= " + mMinDY + " " + mMaxDY); 3827 } 3828 3829 int docRight = computeHorizontalScrollRange(); 3830 int viewLeft = getScrollX(); 3831 int viewRight = viewLeft + getWidth(); 3832 mStartX = x; 3833 mMinDX = -viewLeft; 3834 mMaxDX = docRight - viewRight; 3835 3836 mProxy.onStartDrag(x, y); 3837 3838 // ensure we buildBitmap at least once 3839 mSX = -99999; 3840 } 3841 3842 private float computeStretch(float delta, float min, float max) { 3843 float stretch = 0; 3844 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 3845 if (delta < min) { 3846 stretch = delta - min; 3847 } else if (delta > max) { 3848 stretch = delta - max; 3849 } 3850 } 3851 return stretch; 3852 } 3853 3854 public void dragTo(float x, float y) { 3855 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 3856 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 3857 3858 if (mCurrStretchX != sx || mCurrStretchY != sy) { 3859 mCurrStretchX = sx; 3860 mCurrStretchY = sy; 3861 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 3862 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 3863 " " + sy); 3864 } 3865 if (mProxy.onStretchChange(sx, sy)) { 3866 invalidate(); 3867 } 3868 } 3869 } 3870 3871 public void stopDrag() { 3872 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 3873 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag"); 3874 } 3875 mProxy.onStopDrag(); 3876 } 3877 3878 private int hiddenHeightOfTitleBar() { 3879 return getTitleHeight() - getVisibleTitleHeight(); 3880 } 3881 3882 // need a way to know if 565 or 8888 is the right config for 3883 // capturing the display and giving it to the drag proxy 3884 private Bitmap.Config offscreenBitmapConfig() { 3885 // hard code 565 for now 3886 return Bitmap.Config.RGB_565; 3887 } 3888 3889 /* If the tracker draws, then this returns true, otherwise it will 3890 return false, and draw nothing. 3891 */ 3892 public boolean draw(Canvas canvas) { 3893 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 3894 int sx = getScrollX(); 3895 int sy = getScrollY() - hiddenHeightOfTitleBar(); 3896 3897 if (mSX != sx || mSY != sy) { 3898 buildBitmap(sx, sy); 3899 mSX = sx; 3900 mSY = sy; 3901 } 3902 3903 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 3904 canvas.translate(sx, sy); 3905 mProxy.onDraw(canvas); 3906 canvas.restoreToCount(count); 3907 return true; 3908 } 3909 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 3910 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 3911 mCurrStretchX + " " + mCurrStretchY); 3912 } 3913 return false; 3914 } 3915 3916 private void buildBitmap(int sx, int sy) { 3917 int w = getWidth(); 3918 int h = getViewHeight(); 3919 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 3920 Canvas canvas = new Canvas(bm); 3921 canvas.translate(-sx, -sy); 3922 drawContent(canvas); 3923 3924 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 3925 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 3926 " " + sy + " " + w + " " + h); 3927 } 3928 mProxy.onBitmapChange(bm); 3929 } 3930 } 3931 3932 /** @hide */ 3933 public static class DragTracker { 3934 public void onStartDrag(float x, float y) {} 3935 public boolean onStretchChange(float sx, float sy) { 3936 // return true to have us inval the view 3937 return false; 3938 } 3939 public void onStopDrag() {} 3940 public void onBitmapChange(Bitmap bm) {} 3941 public void onDraw(Canvas canvas) {} 3942 } 3943 3944 /** @hide */ 3945 public DragTracker getDragTracker() { 3946 return mDragTracker; 3947 } 3948 3949 /** @hide */ 3950 public void setDragTracker(DragTracker tracker) { 3951 mDragTracker = tracker; 3952 } 3953 3954 private DragTracker mDragTracker; 3955 private DragTrackerHandler mDragTrackerHandler; 3956 3957 @Override 3958 public boolean onTouchEvent(MotionEvent ev) { 3959 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 3960 return false; 3961 } 3962 3963 if (DebugFlags.WEB_VIEW) { 3964 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 3965 + mTouchMode); 3966 } 3967 3968 // FIXME: we may consider to give WebKit an option to handle multi-touch 3969 // events later. 3970 if (mSupportMultiTouch && mMinZoomScale < mMaxZoomScale 3971 && ev.getPointerCount() > 1) { 3972 mLastTouchTime = ev.getEventTime(); 3973 return mScaleDetector.onTouchEvent(ev); 3974 } 3975 3976 int action = ev.getAction(); 3977 float x = ev.getX(); 3978 float y = ev.getY(); 3979 long eventTime = ev.getEventTime(); 3980 3981 // Due to the touch screen edge effect, a touch closer to the edge 3982 // always snapped to the edge. As getViewWidth() can be different from 3983 // getWidth() due to the scrollbar, adjusting the point to match 3984 // getViewWidth(). Same applied to the height. 3985 if (x > getViewWidth() - 1) { 3986 x = getViewWidth() - 1; 3987 } 3988 if (y > getViewHeightWithTitle() - 1) { 3989 y = getViewHeightWithTitle() - 1; 3990 } 3991 3992 // pass the touch events from UI thread to WebCore thread 3993 if (mForwardTouchEvents && (action != MotionEvent.ACTION_MOVE 3994 || eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 3995 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 3996 ted.mAction = action; 3997 ted.mX = viewToContentX((int) x + mScrollX); 3998 ted.mY = viewToContentY((int) y + mScrollY); 3999 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4000 mLastSentTouchTime = eventTime; 4001 } 4002 4003 int deltaX = (int) (mLastTouchX - x); 4004 int deltaY = (int) (mLastTouchY - y); 4005 4006 switch (action) { 4007 case MotionEvent.ACTION_DOWN: { 4008 mPreventDrag = PREVENT_DRAG_NO; 4009 if (!mScroller.isFinished()) { 4010 // stop the current scroll animation, but if this is 4011 // the start of a fling, allow it to add to the current 4012 // fling's velocity 4013 mScroller.abortAnimation(); 4014 mTouchMode = TOUCH_DRAG_START_MODE; 4015 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 4016 } else if (mShiftIsPressed) { 4017 mSelectX = mScrollX + (int) x; 4018 mSelectY = mScrollY + (int) y; 4019 mTouchMode = TOUCH_SELECT_MODE; 4020 if (DebugFlags.WEB_VIEW) { 4021 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4022 } 4023 nativeMoveSelection(viewToContentX(mSelectX), 4024 viewToContentY(mSelectY), false); 4025 mTouchSelection = mExtendSelection = true; 4026 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4027 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4028 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4029 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4030 } else { 4031 // commit the short press action for the previous tap 4032 doShortPress(); 4033 // continue, mTouchMode should be still TOUCH_INIT_MODE 4034 } 4035 } else { 4036 mPreviewZoomOnly = false; 4037 mTouchMode = TOUCH_INIT_MODE; 4038 mPreventDrag = mForwardTouchEvents ? PREVENT_DRAG_MAYBE_YES 4039 : PREVENT_DRAG_NO; 4040 mWebViewCore.sendMessage( 4041 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4042 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4043 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 4044 (eventTime - mLastTouchUpTime), eventTime); 4045 } 4046 } 4047 // Trigger the link 4048 if (mTouchMode == TOUCH_INIT_MODE 4049 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4050 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4051 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 4052 } 4053 // Remember where the motion event started 4054 startTouch(x, y, eventTime); 4055 if (mDragTracker != null) { 4056 mDragTrackerHandler = new DragTrackerHandler(x, y, 4057 mDragTracker); 4058 } 4059 break; 4060 } 4061 case MotionEvent.ACTION_MOVE: { 4062 if (mTouchMode == TOUCH_DONE_MODE) { 4063 // no dragging during scroll zoom animation 4064 break; 4065 } 4066 mVelocityTracker.addMovement(ev); 4067 4068 if (mTouchMode != TOUCH_DRAG_MODE) { 4069 if (mTouchMode == TOUCH_SELECT_MODE) { 4070 mSelectX = mScrollX + (int) x; 4071 mSelectY = mScrollY + (int) y; 4072 if (DebugFlags.WEB_VIEW) { 4073 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4074 } 4075 nativeMoveSelection(viewToContentX(mSelectX), 4076 viewToContentY(mSelectY), true); 4077 invalidate(); 4078 break; 4079 } 4080 if ((deltaX * deltaX + deltaY * deltaY) < mTouchSlopSquare) { 4081 break; 4082 } 4083 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4084 // track mLastTouchTime as we may need to do fling at 4085 // ACTION_UP 4086 mLastTouchTime = eventTime; 4087 break; 4088 } 4089 if (mTouchMode == TOUCH_SHORTPRESS_MODE 4090 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4091 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4092 } else if (mTouchMode == TOUCH_INIT_MODE 4093 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4094 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4095 } 4096 4097 // if it starts nearly horizontal or vertical, enforce it 4098 int ax = Math.abs(deltaX); 4099 int ay = Math.abs(deltaY); 4100 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4101 mSnapScrollMode = SNAP_X; 4102 mSnapPositive = deltaX > 0; 4103 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4104 mSnapScrollMode = SNAP_Y; 4105 mSnapPositive = deltaY > 0; 4106 } 4107 4108 mTouchMode = TOUCH_DRAG_MODE; 4109 WebViewCore.pauseUpdate(mWebViewCore); 4110 if (!mDragFromTextInput) { 4111 nativeHideCursor(); 4112 } 4113 WebSettings settings = getSettings(); 4114 if (settings.supportZoom() 4115 && settings.getBuiltInZoomControls() 4116 && !mZoomButtonsController.isVisible() 4117 && mMinZoomScale < mMaxZoomScale) { 4118 mZoomButtonsController.setVisible(true); 4119 int count = settings.getDoubleTapToastCount(); 4120 if (mInZoomOverview && count > 0) { 4121 settings.setDoubleTapToastCount(--count); 4122 Toast.makeText(mContext, 4123 com.android.internal.R.string.double_tap_toast, 4124 Toast.LENGTH_LONG).show(); 4125 } 4126 } 4127 } 4128 4129 // do pan 4130 int newScrollX = pinLocX(mScrollX + deltaX); 4131 deltaX = newScrollX - mScrollX; 4132 int newScrollY = pinLocY(mScrollY + deltaY); 4133 deltaY = newScrollY - mScrollY; 4134 boolean done = false; 4135 if (deltaX == 0 && deltaY == 0) { 4136 done = true; 4137 } else { 4138 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4139 int ax = Math.abs(deltaX); 4140 int ay = Math.abs(deltaY); 4141 if (mSnapScrollMode == SNAP_X) { 4142 // radical change means getting out of snap mode 4143 if (ay > MAX_SLOPE_FOR_DIAG * ax 4144 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4145 mSnapScrollMode = SNAP_NONE; 4146 } 4147 // reverse direction means lock in the snap mode 4148 if ((ax > MAX_SLOPE_FOR_DIAG * ay) && 4149 ((mSnapPositive && 4150 deltaX < -mMinLockSnapReverseDistance) 4151 || (!mSnapPositive && 4152 deltaX > mMinLockSnapReverseDistance))) { 4153 mSnapScrollMode = SNAP_X_LOCK; 4154 } 4155 } else { 4156 // radical change means getting out of snap mode 4157 if ((ax > MAX_SLOPE_FOR_DIAG * ay) 4158 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4159 mSnapScrollMode = SNAP_NONE; 4160 } 4161 // reverse direction means lock in the snap mode 4162 if ((ay > MAX_SLOPE_FOR_DIAG * ax) && 4163 ((mSnapPositive && 4164 deltaY < -mMinLockSnapReverseDistance) 4165 || (!mSnapPositive && 4166 deltaY > mMinLockSnapReverseDistance))) { 4167 mSnapScrollMode = SNAP_Y_LOCK; 4168 } 4169 } 4170 } 4171 4172 if (mSnapScrollMode == SNAP_X 4173 || mSnapScrollMode == SNAP_X_LOCK) { 4174 if (deltaX == 0) { 4175 // keep the scrollbar on the screen even there is no 4176 // scroll 4177 awakenScrollBars(ViewConfiguration 4178 .getScrollDefaultDelay(), false); 4179 } else { 4180 scrollBy(deltaX, 0); 4181 } 4182 mLastTouchX = x; 4183 } else if (mSnapScrollMode == SNAP_Y 4184 || mSnapScrollMode == SNAP_Y_LOCK) { 4185 if (deltaY == 0) { 4186 // keep the scrollbar on the screen even there is no 4187 // scroll 4188 awakenScrollBars(ViewConfiguration 4189 .getScrollDefaultDelay(), false); 4190 } else { 4191 scrollBy(0, deltaY); 4192 } 4193 mLastTouchY = y; 4194 } else { 4195 scrollBy(deltaX, deltaY); 4196 mLastTouchX = x; 4197 mLastTouchY = y; 4198 } 4199 mLastTouchTime = eventTime; 4200 mUserScroll = true; 4201 } 4202 4203 if (!getSettings().getBuiltInZoomControls()) { 4204 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 4205 if (mZoomControls != null && showPlusMinus) { 4206 if (mZoomControls.getVisibility() == View.VISIBLE) { 4207 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4208 } else { 4209 mZoomControls.show(showPlusMinus, false); 4210 } 4211 mPrivateHandler.postDelayed(mZoomControlRunnable, 4212 ZOOM_CONTROLS_TIMEOUT); 4213 } 4214 } 4215 4216 if (mDragTrackerHandler != null) { 4217 mDragTrackerHandler.dragTo(x, y); 4218 } 4219 4220 if (done) { 4221 // keep the scrollbar on the screen even there is no scroll 4222 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4223 false); 4224 // return false to indicate that we can't pan out of the 4225 // view space 4226 return false; 4227 } 4228 break; 4229 } 4230 case MotionEvent.ACTION_UP: { 4231 if (mDragTrackerHandler != null) { 4232 mDragTrackerHandler.stopDrag(); 4233 mDragTrackerHandler = null; 4234 } 4235 mLastTouchUpTime = eventTime; 4236 switch (mTouchMode) { 4237 case TOUCH_DOUBLE_TAP_MODE: // double tap 4238 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4239 mTouchMode = TOUCH_DONE_MODE; 4240 doDoubleTap(); 4241 break; 4242 case TOUCH_SELECT_MODE: 4243 commitCopy(); 4244 mTouchSelection = false; 4245 break; 4246 case TOUCH_INIT_MODE: // tap 4247 case TOUCH_SHORTPRESS_START_MODE: 4248 case TOUCH_SHORTPRESS_MODE: 4249 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4250 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4251 if ((deltaX * deltaX + deltaY * deltaY) > mTouchSlopSquare) { 4252 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4253 " WebCore's response for touch down."); 4254 if (computeHorizontalScrollExtent() < computeHorizontalScrollRange() 4255 || computeVerticalScrollExtent() < computeVerticalScrollRange()) { 4256 // we will not rewrite drag code here, but we 4257 // will try fling if it applies. 4258 WebViewCore.pauseUpdate(mWebViewCore); 4259 // fall through to TOUCH_DRAG_MODE 4260 } else { 4261 break; 4262 } 4263 } else { 4264 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 4265 // if mPreventDrag is not confirmed, treat it as 4266 // no so that it won't block tap or double tap. 4267 mPreventDrag = PREVENT_DRAG_NO; 4268 } 4269 if (mPreventDrag == PREVENT_DRAG_NO) { 4270 if (mTouchMode == TOUCH_INIT_MODE) { 4271 mPrivateHandler.sendMessageDelayed( 4272 mPrivateHandler.obtainMessage( 4273 RELEASE_SINGLE_TAP), 4274 ViewConfiguration.getDoubleTapTimeout()); 4275 } else { 4276 mTouchMode = TOUCH_DONE_MODE; 4277 doShortPress(); 4278 } 4279 } 4280 break; 4281 } 4282 case TOUCH_DRAG_MODE: 4283 // redraw in high-quality, as we're done dragging 4284 invalidate(); 4285 // if the user waits a while w/o moving before the 4286 // up, we don't want to do a fling 4287 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4288 mVelocityTracker.addMovement(ev); 4289 doFling(); 4290 break; 4291 } 4292 mLastVelocity = 0; 4293 WebViewCore.resumeUpdate(mWebViewCore); 4294 break; 4295 case TOUCH_DRAG_START_MODE: 4296 case TOUCH_DONE_MODE: 4297 // do nothing 4298 break; 4299 } 4300 // we also use mVelocityTracker == null to tell us that we are 4301 // not "moving around", so we can take the slower/prettier 4302 // mode in the drawing code 4303 if (mVelocityTracker != null) { 4304 mVelocityTracker.recycle(); 4305 mVelocityTracker = null; 4306 } 4307 break; 4308 } 4309 case MotionEvent.ACTION_CANCEL: { 4310 if (mDragTrackerHandler != null) { 4311 mDragTrackerHandler.stopDrag(); 4312 mDragTrackerHandler = null; 4313 } 4314 cancelTouch(); 4315 break; 4316 } 4317 } 4318 return true; 4319 } 4320 4321 private void startTouch(float x, float y, long eventTime) { 4322 mLastTouchX = x; 4323 mLastTouchY = y; 4324 mLastTouchTime = eventTime; 4325 mVelocityTracker = VelocityTracker.obtain(); 4326 mSnapScrollMode = SNAP_NONE; 4327 } 4328 4329 private void cancelTouch() { 4330 // we also use mVelocityTracker == null to tell us that we are not 4331 // "moving around", so we can take the slower/prettier mode in the 4332 // drawing code 4333 if (mVelocityTracker != null) { 4334 mVelocityTracker.recycle(); 4335 mVelocityTracker = null; 4336 } 4337 if (mTouchMode == TOUCH_DRAG_MODE) { 4338 WebViewCore.resumeUpdate(mWebViewCore); 4339 } 4340 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4341 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4342 mTouchMode = TOUCH_DONE_MODE; 4343 nativeHideCursor(); 4344 } 4345 4346 private long mTrackballFirstTime = 0; 4347 private long mTrackballLastTime = 0; 4348 private float mTrackballRemainsX = 0.0f; 4349 private float mTrackballRemainsY = 0.0f; 4350 private int mTrackballXMove = 0; 4351 private int mTrackballYMove = 0; 4352 private boolean mExtendSelection = false; 4353 private boolean mTouchSelection = false; 4354 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4355 private static final int TRACKBALL_TIMEOUT = 200; 4356 private static final int TRACKBALL_WAIT = 100; 4357 private static final int TRACKBALL_SCALE = 400; 4358 private static final int TRACKBALL_SCROLL_COUNT = 5; 4359 private static final int TRACKBALL_MOVE_COUNT = 10; 4360 private static final int TRACKBALL_MULTIPLIER = 3; 4361 private static final int SELECT_CURSOR_OFFSET = 16; 4362 private int mSelectX = 0; 4363 private int mSelectY = 0; 4364 private boolean mShiftIsPressed = false; 4365 private boolean mTrackballDown = false; 4366 private long mTrackballUpTime = 0; 4367 private long mLastCursorTime = 0; 4368 private Rect mLastCursorBounds; 4369 4370 // Set by default; BrowserActivity clears to interpret trackball data 4371 // directly for movement. Currently, the framework only passes 4372 // arrow key events, not trackball events, from one child to the next 4373 private boolean mMapTrackballToArrowKeys = true; 4374 4375 public void setMapTrackballToArrowKeys(boolean setMap) { 4376 mMapTrackballToArrowKeys = setMap; 4377 } 4378 4379 void resetTrackballTime() { 4380 mTrackballLastTime = 0; 4381 } 4382 4383 @Override 4384 public boolean onTrackballEvent(MotionEvent ev) { 4385 long time = ev.getEventTime(); 4386 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4387 if (ev.getY() > 0) pageDown(true); 4388 if (ev.getY() < 0) pageUp(true); 4389 return true; 4390 } 4391 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4392 if (mShiftIsPressed) { 4393 return true; // discard press if copy in progress 4394 } 4395 mTrackballDown = true; 4396 if (mNativeClass == 0) { 4397 return false; 4398 } 4399 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4400 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4401 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4402 nativeSelectBestAt(mLastCursorBounds); 4403 } 4404 if (DebugFlags.WEB_VIEW) { 4405 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4406 + " time=" + time 4407 + " mLastCursorTime=" + mLastCursorTime); 4408 } 4409 if (isInTouchMode()) requestFocusFromTouch(); 4410 return false; // let common code in onKeyDown at it 4411 } 4412 if (ev.getAction() == MotionEvent.ACTION_UP) { 4413 // LONG_PRESS_CENTER is set in common onKeyDown 4414 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4415 mTrackballDown = false; 4416 mTrackballUpTime = time; 4417 if (mShiftIsPressed) { 4418 if (mExtendSelection) { 4419 commitCopy(); 4420 } else { 4421 mExtendSelection = true; 4422 } 4423 return true; // discard press if copy in progress 4424 } 4425 if (DebugFlags.WEB_VIEW) { 4426 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4427 + " time=" + time 4428 ); 4429 } 4430 return false; // let common code in onKeyUp at it 4431 } 4432 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4433 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4434 return false; 4435 } 4436 if (mTrackballDown) { 4437 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4438 return true; // discard move if trackball is down 4439 } 4440 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4441 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4442 return true; 4443 } 4444 // TODO: alternatively we can do panning as touch does 4445 switchOutDrawHistory(); 4446 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4447 if (DebugFlags.WEB_VIEW) { 4448 Log.v(LOGTAG, "onTrackballEvent time=" 4449 + time + " last=" + mTrackballLastTime); 4450 } 4451 mTrackballFirstTime = time; 4452 mTrackballXMove = mTrackballYMove = 0; 4453 } 4454 mTrackballLastTime = time; 4455 if (DebugFlags.WEB_VIEW) { 4456 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4457 } 4458 mTrackballRemainsX += ev.getX(); 4459 mTrackballRemainsY += ev.getY(); 4460 doTrackball(time); 4461 return true; 4462 } 4463 4464 void moveSelection(float xRate, float yRate) { 4465 if (mNativeClass == 0) 4466 return; 4467 int width = getViewWidth(); 4468 int height = getViewHeight(); 4469 mSelectX += scaleTrackballX(xRate, width); 4470 mSelectY += scaleTrackballY(yRate, height); 4471 int maxX = width + mScrollX; 4472 int maxY = height + mScrollY; 4473 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4474 , mSelectX)); 4475 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4476 , mSelectY)); 4477 if (DebugFlags.WEB_VIEW) { 4478 Log.v(LOGTAG, "moveSelection" 4479 + " mSelectX=" + mSelectX 4480 + " mSelectY=" + mSelectY 4481 + " mScrollX=" + mScrollX 4482 + " mScrollY=" + mScrollY 4483 + " xRate=" + xRate 4484 + " yRate=" + yRate 4485 ); 4486 } 4487 nativeMoveSelection(viewToContentX(mSelectX), 4488 viewToContentY(mSelectY), mExtendSelection); 4489 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4490 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4491 : 0; 4492 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4493 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4494 : 0; 4495 pinScrollBy(scrollX, scrollY, true, 0); 4496 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4497 requestRectangleOnScreen(select); 4498 invalidate(); 4499 } 4500 4501 private int scaleTrackballX(float xRate, int width) { 4502 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4503 int nextXMove = xMove; 4504 if (xMove > 0) { 4505 if (xMove > mTrackballXMove) { 4506 xMove -= mTrackballXMove; 4507 } 4508 } else if (xMove < mTrackballXMove) { 4509 xMove -= mTrackballXMove; 4510 } 4511 mTrackballXMove = nextXMove; 4512 return xMove; 4513 } 4514 4515 private int scaleTrackballY(float yRate, int height) { 4516 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4517 int nextYMove = yMove; 4518 if (yMove > 0) { 4519 if (yMove > mTrackballYMove) { 4520 yMove -= mTrackballYMove; 4521 } 4522 } else if (yMove < mTrackballYMove) { 4523 yMove -= mTrackballYMove; 4524 } 4525 mTrackballYMove = nextYMove; 4526 return yMove; 4527 } 4528 4529 private int keyCodeToSoundsEffect(int keyCode) { 4530 switch(keyCode) { 4531 case KeyEvent.KEYCODE_DPAD_UP: 4532 return SoundEffectConstants.NAVIGATION_UP; 4533 case KeyEvent.KEYCODE_DPAD_RIGHT: 4534 return SoundEffectConstants.NAVIGATION_RIGHT; 4535 case KeyEvent.KEYCODE_DPAD_DOWN: 4536 return SoundEffectConstants.NAVIGATION_DOWN; 4537 case KeyEvent.KEYCODE_DPAD_LEFT: 4538 return SoundEffectConstants.NAVIGATION_LEFT; 4539 } 4540 throw new IllegalArgumentException("keyCode must be one of " + 4541 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4542 "KEYCODE_DPAD_LEFT}."); 4543 } 4544 4545 private void doTrackball(long time) { 4546 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4547 if (elapsed == 0) { 4548 elapsed = TRACKBALL_TIMEOUT; 4549 } 4550 float xRate = mTrackballRemainsX * 1000 / elapsed; 4551 float yRate = mTrackballRemainsY * 1000 / elapsed; 4552 if (mShiftIsPressed) { 4553 moveSelection(xRate, yRate); 4554 mTrackballRemainsX = mTrackballRemainsY = 0; 4555 return; 4556 } 4557 float ax = Math.abs(xRate); 4558 float ay = Math.abs(yRate); 4559 float maxA = Math.max(ax, ay); 4560 if (DebugFlags.WEB_VIEW) { 4561 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4562 + " xRate=" + xRate 4563 + " yRate=" + yRate 4564 + " mTrackballRemainsX=" + mTrackballRemainsX 4565 + " mTrackballRemainsY=" + mTrackballRemainsY); 4566 } 4567 int width = mContentWidth - getViewWidth(); 4568 int height = mContentHeight - getViewHeight(); 4569 if (width < 0) width = 0; 4570 if (height < 0) height = 0; 4571 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4572 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4573 maxA = Math.max(ax, ay); 4574 int count = Math.max(0, (int) maxA); 4575 int oldScrollX = mScrollX; 4576 int oldScrollY = mScrollY; 4577 if (count > 0) { 4578 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4579 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4580 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4581 KeyEvent.KEYCODE_DPAD_RIGHT; 4582 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4583 if (DebugFlags.WEB_VIEW) { 4584 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4585 + " count=" + count 4586 + " mTrackballRemainsX=" + mTrackballRemainsX 4587 + " mTrackballRemainsY=" + mTrackballRemainsY); 4588 } 4589 if (navHandledKey(selectKeyCode, count, false, time, false)) { 4590 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4591 } 4592 mTrackballRemainsX = mTrackballRemainsY = 0; 4593 } 4594 if (count >= TRACKBALL_SCROLL_COUNT) { 4595 int xMove = scaleTrackballX(xRate, width); 4596 int yMove = scaleTrackballY(yRate, height); 4597 if (DebugFlags.WEB_VIEW) { 4598 Log.v(LOGTAG, "doTrackball pinScrollBy" 4599 + " count=" + count 4600 + " xMove=" + xMove + " yMove=" + yMove 4601 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4602 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4603 ); 4604 } 4605 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4606 xMove = 0; 4607 } 4608 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4609 yMove = 0; 4610 } 4611 if (xMove != 0 || yMove != 0) { 4612 pinScrollBy(xMove, yMove, true, 0); 4613 } 4614 mUserScroll = true; 4615 } 4616 } 4617 4618 private int computeMaxScrollY() { 4619 int maxContentH = computeVerticalScrollRange() + getTitleHeight(); 4620 return Math.max(maxContentH - getViewHeightWithTitle(), getTitleHeight()); 4621 } 4622 4623 public void flingScroll(int vx, int vy) { 4624 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4625 int maxY = computeMaxScrollY(); 4626 4627 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 4628 invalidate(); 4629 } 4630 4631 private void doFling() { 4632 if (mVelocityTracker == null) { 4633 return; 4634 } 4635 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4636 int maxY = computeMaxScrollY(); 4637 4638 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 4639 int vx = (int) mVelocityTracker.getXVelocity(); 4640 int vy = (int) mVelocityTracker.getYVelocity(); 4641 4642 if (mSnapScrollMode != SNAP_NONE) { 4643 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_X_LOCK) { 4644 vy = 0; 4645 } else { 4646 vx = 0; 4647 } 4648 } 4649 4650 if (true /* EMG release: make our fling more like Maps' */) { 4651 // maps cuts their velocity in half 4652 vx = vx * 3 / 4; 4653 vy = vy * 3 / 4; 4654 } 4655 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 4656 WebViewCore.resumeUpdate(mWebViewCore); 4657 return; 4658 } 4659 float currentVelocity = mScroller.getCurrVelocity(); 4660 if (mLastVelocity > 0 && currentVelocity > 0) { 4661 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 4662 - Math.atan2(vy, vx))); 4663 final float circle = (float) (Math.PI) * 2.0f; 4664 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 4665 vx += currentVelocity * mLastVelX / mLastVelocity; 4666 vy += currentVelocity * mLastVelY / mLastVelocity; 4667 if (DebugFlags.WEB_VIEW) { 4668 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 4669 } 4670 } else if (DebugFlags.WEB_VIEW) { 4671 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 4672 } 4673 } else if (DebugFlags.WEB_VIEW) { 4674 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 4675 + " current=" + currentVelocity 4676 + " vx=" + vx + " vy=" + vy 4677 + " maxX=" + maxX + " maxY=" + maxY 4678 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 4679 } 4680 mLastVelX = vx; 4681 mLastVelY = vy; 4682 mLastVelocity = (float) Math.hypot(vx, vy); 4683 4684 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 4685 // TODO: duration is calculated based on velocity, if the range is 4686 // small, the animation will stop before duration is up. We may 4687 // want to calculate how long the animation is going to run to precisely 4688 // resume the webcore update. 4689 final int time = mScroller.getDuration(); 4690 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_UPDATE, time); 4691 awakenScrollBars(time); 4692 invalidate(); 4693 } 4694 4695 private boolean zoomWithPreview(float scale) { 4696 float oldScale = mActualScale; 4697 mInitialScrollX = mScrollX; 4698 mInitialScrollY = mScrollY; 4699 4700 // snap to DEFAULT_SCALE if it is close 4701 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 4702 scale = mDefaultScale; 4703 } 4704 4705 setNewZoomScale(scale, true, false); 4706 4707 if (oldScale != mActualScale) { 4708 // use mZoomPickerScale to see zoom preview first 4709 mZoomStart = SystemClock.uptimeMillis(); 4710 mInvInitialZoomScale = 1.0f / oldScale; 4711 mInvFinalZoomScale = 1.0f / mActualScale; 4712 mZoomScale = mActualScale; 4713 invalidate(); 4714 return true; 4715 } else { 4716 return false; 4717 } 4718 } 4719 4720 /** 4721 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 4722 * in charge of installing this view to the view hierarchy. This view will 4723 * become visible when the user starts scrolling via touch and fade away if 4724 * the user does not interact with it. 4725 * <p/> 4726 * API version 3 introduces a built-in zoom mechanism that is shown 4727 * automatically by the MapView. This is the preferred approach for 4728 * showing the zoom UI. 4729 * 4730 * @deprecated The built-in zoom mechanism is preferred, see 4731 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 4732 */ 4733 @Deprecated 4734 public View getZoomControls() { 4735 if (!getSettings().supportZoom()) { 4736 Log.w(LOGTAG, "This WebView doesn't support zoom."); 4737 return null; 4738 } 4739 if (mZoomControls == null) { 4740 mZoomControls = createZoomControls(); 4741 4742 /* 4743 * need to be set to VISIBLE first so that getMeasuredHeight() in 4744 * {@link #onSizeChanged()} can return the measured value for proper 4745 * layout. 4746 */ 4747 mZoomControls.setVisibility(View.VISIBLE); 4748 mZoomControlRunnable = new Runnable() { 4749 public void run() { 4750 4751 /* Don't dismiss the controls if the user has 4752 * focus on them. Wait and check again later. 4753 */ 4754 if (!mZoomControls.hasFocus()) { 4755 mZoomControls.hide(); 4756 } else { 4757 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4758 mPrivateHandler.postDelayed(mZoomControlRunnable, 4759 ZOOM_CONTROLS_TIMEOUT); 4760 } 4761 } 4762 }; 4763 } 4764 return mZoomControls; 4765 } 4766 4767 private ExtendedZoomControls createZoomControls() { 4768 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 4769 , null); 4770 zoomControls.setOnZoomInClickListener(new OnClickListener() { 4771 public void onClick(View v) { 4772 // reset time out 4773 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4774 mPrivateHandler.postDelayed(mZoomControlRunnable, 4775 ZOOM_CONTROLS_TIMEOUT); 4776 zoomIn(); 4777 } 4778 }); 4779 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 4780 public void onClick(View v) { 4781 // reset time out 4782 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4783 mPrivateHandler.postDelayed(mZoomControlRunnable, 4784 ZOOM_CONTROLS_TIMEOUT); 4785 zoomOut(); 4786 } 4787 }); 4788 return zoomControls; 4789 } 4790 4791 /** 4792 * Gets the {@link ZoomButtonsController} which can be used to add 4793 * additional buttons to the zoom controls window. 4794 * 4795 * @return The instance of {@link ZoomButtonsController} used by this class, 4796 * or null if it is unavailable. 4797 * @hide 4798 */ 4799 public ZoomButtonsController getZoomButtonsController() { 4800 return mZoomButtonsController; 4801 } 4802 4803 /** 4804 * Perform zoom in in the webview 4805 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 4806 */ 4807 public boolean zoomIn() { 4808 // TODO: alternatively we can disallow this during draw history mode 4809 switchOutDrawHistory(); 4810 mInZoomOverview = false; 4811 // Center zooming to the center of the screen. 4812 mZoomCenterX = getViewWidth() * .5f; 4813 mZoomCenterY = getViewHeight() * .5f; 4814 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4815 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4816 return zoomWithPreview(mActualScale * 1.25f); 4817 } 4818 4819 /** 4820 * Perform zoom out in the webview 4821 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 4822 */ 4823 public boolean zoomOut() { 4824 // TODO: alternatively we can disallow this during draw history mode 4825 switchOutDrawHistory(); 4826 // Center zooming to the center of the screen. 4827 mZoomCenterX = getViewWidth() * .5f; 4828 mZoomCenterY = getViewHeight() * .5f; 4829 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4830 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4831 return zoomWithPreview(mActualScale * 0.8f); 4832 } 4833 4834 private void updateSelection() { 4835 if (mNativeClass == 0) { 4836 return; 4837 } 4838 // mLastTouchX and mLastTouchY are the point in the current viewport 4839 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4840 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4841 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 4842 contentX + mNavSlop, contentY + mNavSlop); 4843 nativeSelectBestAt(rect); 4844 } 4845 4846 /** 4847 * Scroll the focused text field/area to match the WebTextView 4848 * @param xPercent New x position of the WebTextView from 0 to 1. 4849 * @param y New y position of the WebTextView in view coordinates 4850 */ 4851 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 4852 if (!inEditingMode() || mWebViewCore == null) { 4853 return; 4854 } 4855 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 4856 // Since this position is relative to the top of the text input 4857 // field, we do not need to take the title bar's height into 4858 // consideration. 4859 viewToContentDimension(y), 4860 new Float(xPercent)); 4861 } 4862 4863 /** 4864 * Set our starting point and time for a drag from the WebTextView. 4865 */ 4866 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 4867 if (!inEditingMode()) { 4868 return; 4869 } 4870 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 4871 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 4872 mLastTouchTime = eventTime; 4873 if (!mScroller.isFinished()) { 4874 abortAnimation(); 4875 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 4876 } 4877 mSnapScrollMode = SNAP_NONE; 4878 mVelocityTracker = VelocityTracker.obtain(); 4879 mTouchMode = TOUCH_DRAG_START_MODE; 4880 } 4881 4882 /** 4883 * Given a motion event from the WebTextView, set its location to our 4884 * coordinates, and handle the event. 4885 */ 4886 /*package*/ boolean textFieldDrag(MotionEvent event) { 4887 if (!inEditingMode()) { 4888 return false; 4889 } 4890 mDragFromTextInput = true; 4891 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 4892 (float) (mWebTextView.getTop() - mScrollY)); 4893 boolean result = onTouchEvent(event); 4894 mDragFromTextInput = false; 4895 return result; 4896 } 4897 4898 /** 4899 * Do a touch up from a WebTextView. This will be handled by webkit to 4900 * change the selection. 4901 * @param event MotionEvent in the WebTextView's coordinates. 4902 */ 4903 /*package*/ void touchUpOnTextField(MotionEvent event) { 4904 if (!inEditingMode()) { 4905 return; 4906 } 4907 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 4908 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 4909 // In case the soft keyboard has been dismissed, bring it back up. 4910 InputMethodManager.getInstance(getContext()).showSoftInput(mWebTextView, 4911 0); 4912 if (nativeFocusNodePointer() != nativeCursorNodePointer()) { 4913 nativeMotionUp(x, y, mNavSlop); 4914 } 4915 nativeTextInputMotionUp(x, y); 4916 } 4917 4918 /*package*/ void shortPressOnTextField() { 4919 if (inEditingMode()) { 4920 View v = mWebTextView; 4921 int x = viewToContentX((v.getLeft() + v.getRight()) >> 1); 4922 int y = viewToContentY((v.getTop() + v.getBottom()) >> 1); 4923 displaySoftKeyboard(true); 4924 nativeTextInputMotionUp(x, y); 4925 } 4926 } 4927 4928 private void doShortPress() { 4929 if (mNativeClass == 0) { 4930 return; 4931 } 4932 switchOutDrawHistory(); 4933 // mLastTouchX and mLastTouchY are the point in the current viewport 4934 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4935 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4936 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 4937 if (mLogEvent) { 4938 Checkin.updateStats(mContext.getContentResolver(), 4939 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 4940 } 4941 } 4942 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 4943 playSoundEffect(SoundEffectConstants.CLICK); 4944 } 4945 } 4946 4947 // Rule for double tap: 4948 // 1. if the current scale is not same as the text wrap scale and layout 4949 // algorithm is NARROW_COLUMNS, fit to column; 4950 // 2. if the current state is not overview mode, change to overview mode; 4951 // 3. if the current state is overview mode, change to default scale. 4952 private void doDoubleTap() { 4953 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 4954 return; 4955 } 4956 mZoomCenterX = mLastTouchX; 4957 mZoomCenterY = mLastTouchY; 4958 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4959 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4960 WebSettings settings = getSettings(); 4961 // remove the zoom control after double tap 4962 if (settings.getBuiltInZoomControls()) { 4963 if (mZoomButtonsController.isVisible()) { 4964 mZoomButtonsController.setVisible(false); 4965 } 4966 } else { 4967 if (mZoomControlRunnable != null) { 4968 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4969 } 4970 if (mZoomControls != null) { 4971 mZoomControls.hide(); 4972 } 4973 } 4974 settings.setDoubleTapToastCount(0); 4975 boolean zoomToDefault = false; 4976 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 4977 && (Math.abs(mActualScale - mTextWrapScale) >= 0.01f)) { 4978 setNewZoomScale(mActualScale, true, true); 4979 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 4980 if (Math.abs(mActualScale - overviewScale) < 0.01f) { 4981 mInZoomOverview = true; 4982 } 4983 } else if (!mInZoomOverview) { 4984 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 4985 if (Math.abs(mActualScale - newScale) >= 0.01f) { 4986 mInZoomOverview = true; 4987 // Force the titlebar fully reveal in overview mode 4988 if (mScrollY < getTitleHeight()) mScrollY = 0; 4989 zoomWithPreview(newScale); 4990 } else if (Math.abs(mActualScale - mDefaultScale) >= 0.01f) { 4991 zoomToDefault = true; 4992 } 4993 } else { 4994 zoomToDefault = true; 4995 } 4996 if (zoomToDefault) { 4997 mInZoomOverview = false; 4998 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 4999 if (left != NO_LEFTEDGE) { 5000 // add a 5pt padding to the left edge. 5001 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5002 - mScrollX; 5003 // Re-calculate the zoom center so that the new scroll x will be 5004 // on the left edge. 5005 if (viewLeft > 0) { 5006 mZoomCenterX = viewLeft * mDefaultScale 5007 / (mDefaultScale - mActualScale); 5008 } else { 5009 scrollBy(viewLeft, 0); 5010 mZoomCenterX = 0; 5011 } 5012 } 5013 zoomWithPreview(mDefaultScale); 5014 } 5015 } 5016 5017 // Called by JNI to handle a touch on a node representing an email address, 5018 // address, or phone number 5019 private void overrideLoading(String url) { 5020 mCallbackProxy.uiOverrideUrlLoading(url); 5021 } 5022 5023 // called by JNI 5024 private void sendPluginState(int state) { 5025 WebViewCore.PluginStateData psd = new WebViewCore.PluginStateData(); 5026 psd.mFrame = nativeCursorFramePointer(); 5027 psd.mNode = nativeCursorNodePointer(); 5028 psd.mState = state; 5029 mWebViewCore.sendMessage(EventHub.PLUGIN_STATE, psd); 5030 } 5031 5032 @Override 5033 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5034 boolean result = false; 5035 if (inEditingMode()) { 5036 result = mWebTextView.requestFocus(direction, 5037 previouslyFocusedRect); 5038 } else { 5039 result = super.requestFocus(direction, previouslyFocusedRect); 5040 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5041 // For cases such as GMail, where we gain focus from a direction, 5042 // we want to move to the first available link. 5043 // FIXME: If there are no visible links, we may not want to 5044 int fakeKeyDirection = 0; 5045 switch(direction) { 5046 case View.FOCUS_UP: 5047 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5048 break; 5049 case View.FOCUS_DOWN: 5050 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5051 break; 5052 case View.FOCUS_LEFT: 5053 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5054 break; 5055 case View.FOCUS_RIGHT: 5056 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5057 break; 5058 default: 5059 return result; 5060 } 5061 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5062 navHandledKey(fakeKeyDirection, 1, true, 0, true); 5063 } 5064 } 5065 } 5066 return result; 5067 } 5068 5069 @Override 5070 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5071 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5072 5073 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5074 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5075 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5076 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5077 5078 int measuredHeight = heightSize; 5079 int measuredWidth = widthSize; 5080 5081 // Grab the content size from WebViewCore. 5082 int contentHeight = contentToViewDimension(mContentHeight); 5083 int contentWidth = contentToViewDimension(mContentWidth); 5084 5085// Log.d(LOGTAG, "------- measure " + heightMode); 5086 5087 if (heightMode != MeasureSpec.EXACTLY) { 5088 mHeightCanMeasure = true; 5089 measuredHeight = contentHeight; 5090 if (heightMode == MeasureSpec.AT_MOST) { 5091 // If we are larger than the AT_MOST height, then our height can 5092 // no longer be measured and we should scroll internally. 5093 if (measuredHeight > heightSize) { 5094 measuredHeight = heightSize; 5095 mHeightCanMeasure = false; 5096 } 5097 } 5098 } else { 5099 mHeightCanMeasure = false; 5100 } 5101 if (mNativeClass != 0) { 5102 nativeSetHeightCanMeasure(mHeightCanMeasure); 5103 } 5104 // For the width, always use the given size unless unspecified. 5105 if (widthMode == MeasureSpec.UNSPECIFIED) { 5106 mWidthCanMeasure = true; 5107 measuredWidth = contentWidth; 5108 } else { 5109 mWidthCanMeasure = false; 5110 } 5111 5112 synchronized (this) { 5113 setMeasuredDimension(measuredWidth, measuredHeight); 5114 } 5115 } 5116 5117 @Override 5118 public boolean requestChildRectangleOnScreen(View child, 5119 Rect rect, 5120 boolean immediate) { 5121 rect.offset(child.getLeft() - child.getScrollX(), 5122 child.getTop() - child.getScrollY()); 5123 5124 int height = getViewHeightWithTitle(); 5125 int screenTop = mScrollY; 5126 int screenBottom = screenTop + height; 5127 5128 int scrollYDelta = 0; 5129 5130 if (rect.bottom > screenBottom) { 5131 int oneThirdOfScreenHeight = height / 3; 5132 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5133 // If the rectangle is too tall to fit in the bottom two thirds 5134 // of the screen, place it at the top. 5135 scrollYDelta = rect.top - screenTop; 5136 } else { 5137 // If the rectangle will still fit on screen, we want its 5138 // top to be in the top third of the screen. 5139 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5140 } 5141 } else if (rect.top < screenTop) { 5142 scrollYDelta = rect.top - screenTop; 5143 } 5144 5145 int width = getWidth() - getVerticalScrollbarWidth(); 5146 int screenLeft = mScrollX; 5147 int screenRight = screenLeft + width; 5148 5149 int scrollXDelta = 0; 5150 5151 if (rect.right > screenRight && rect.left > screenLeft) { 5152 if (rect.width() > width) { 5153 scrollXDelta += (rect.left - screenLeft); 5154 } else { 5155 scrollXDelta += (rect.right - screenRight); 5156 } 5157 } else if (rect.left < screenLeft) { 5158 scrollXDelta -= (screenLeft - rect.left); 5159 } 5160 5161 if ((scrollYDelta | scrollXDelta) != 0) { 5162 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 5163 } 5164 5165 return false; 5166 } 5167 5168 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 5169 String replace, int newStart, int newEnd) { 5170 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 5171 arg.mReplace = replace; 5172 arg.mNewStart = newStart; 5173 arg.mNewEnd = newEnd; 5174 mTextGeneration++; 5175 arg.mTextGeneration = mTextGeneration; 5176 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 5177 } 5178 5179 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 5180 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 5181 mWebViewCore.sendMessage(EventHub.CLICK); 5182 if (mWebTextView.mOkayForFocusNotToMatch) { 5183 int select = nativeFocusCandidateIsTextField() ? 5184 nativeFocusCandidateMaxLength() : 0; 5185 setSelection(select, select); 5186 } 5187 } 5188 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 5189 arg.mEvent = event; 5190 arg.mCurrentText = currentText; 5191 // Increase our text generation number, and pass it to webcore thread 5192 mTextGeneration++; 5193 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 5194 // WebKit's document state is not saved until about to leave the page. 5195 // To make sure the host application, like Browser, has the up to date 5196 // document state when it goes to background, we force to save the 5197 // document state. 5198 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 5199 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 5200 cursorData(), 1000); 5201 } 5202 5203 /* package */ WebViewCore getWebViewCore() { 5204 return mWebViewCore; 5205 } 5206 5207 //------------------------------------------------------------------------- 5208 // Methods can be called from a separate thread, like WebViewCore 5209 // If it needs to call the View system, it has to send message. 5210 //------------------------------------------------------------------------- 5211 5212 /** 5213 * General handler to receive message coming from webkit thread 5214 */ 5215 class PrivateHandler extends Handler { 5216 @Override 5217 public void handleMessage(Message msg) { 5218 if (DebugFlags.WEB_VIEW) { 5219 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD 5220 || msg.what > SHOW_RECT_MSG_ID ? Integer 5221 .toString(msg.what) : HandlerDebugString[msg.what 5222 - REMEMBER_PASSWORD]); 5223 } 5224 if (mWebViewCore == null) { 5225 // after WebView's destroy() is called, skip handling messages. 5226 return; 5227 } 5228 switch (msg.what) { 5229 case REMEMBER_PASSWORD: { 5230 mDatabase.setUsernamePassword( 5231 msg.getData().getString("host"), 5232 msg.getData().getString("username"), 5233 msg.getData().getString("password")); 5234 ((Message) msg.obj).sendToTarget(); 5235 break; 5236 } 5237 case NEVER_REMEMBER_PASSWORD: { 5238 mDatabase.setUsernamePassword( 5239 msg.getData().getString("host"), null, null); 5240 ((Message) msg.obj).sendToTarget(); 5241 break; 5242 } 5243 case SWITCH_TO_SHORTPRESS: { 5244 // if mPreventDrag is not confirmed, treat it as no so that 5245 // it won't block panning the page. 5246 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5247 mPreventDrag = PREVENT_DRAG_NO; 5248 } 5249 if (mTouchMode == TOUCH_INIT_MODE) { 5250 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 5251 updateSelection(); 5252 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5253 mTouchMode = TOUCH_DONE_MODE; 5254 } 5255 break; 5256 } 5257 case SWITCH_TO_LONGPRESS: { 5258 if (mPreventDrag == PREVENT_DRAG_NO) { 5259 mTouchMode = TOUCH_DONE_MODE; 5260 performLongClick(); 5261 rebuildWebTextView(); 5262 } 5263 break; 5264 } 5265 case RELEASE_SINGLE_TAP: { 5266 if (mPreventDrag == PREVENT_DRAG_NO) { 5267 mTouchMode = TOUCH_DONE_MODE; 5268 doShortPress(); 5269 } 5270 break; 5271 } 5272 case SCROLL_BY_MSG_ID: 5273 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 5274 break; 5275 case SYNC_SCROLL_TO_MSG_ID: 5276 if (mUserScroll) { 5277 // if user has scrolled explicitly, don't sync the 5278 // scroll position any more 5279 mUserScroll = false; 5280 break; 5281 } 5282 // fall through 5283 case SCROLL_TO_MSG_ID: 5284 if (setContentScrollTo(msg.arg1, msg.arg2)) { 5285 // if we can't scroll to the exact position due to pin, 5286 // send a message to WebCore to re-scroll when we get a 5287 // new picture 5288 mUserScroll = false; 5289 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 5290 msg.arg1, msg.arg2); 5291 } 5292 break; 5293 case SPAWN_SCROLL_TO_MSG_ID: 5294 spawnContentScrollTo(msg.arg1, msg.arg2); 5295 break; 5296 case NEW_PICTURE_MSG_ID: { 5297 WebSettings settings = mWebViewCore.getSettings(); 5298 // called for new content 5299 final int viewWidth = getViewWidth(); 5300 final WebViewCore.DrawData draw = 5301 (WebViewCore.DrawData) msg.obj; 5302 final Point viewSize = draw.mViewPoint; 5303 boolean useWideViewport = settings.getUseWideViewPort(); 5304 WebViewCore.RestoreState restoreState = draw.mRestoreState; 5305 if (restoreState != null) { 5306 mInZoomOverview = false; 5307 if (restoreState.mMinScale == 0) { 5308 if (restoreState.mMobileSite) { 5309 if (draw.mMinPrefWidth > 5310 Math.max(0, draw.mViewPoint.x)) { 5311 mMinZoomScale = (float) viewWidth 5312 / draw.mMinPrefWidth; 5313 mMinZoomScaleFixed = false; 5314 mInZoomOverview = useWideViewport && 5315 settings.getLoadWithOverviewMode(); 5316 } else { 5317 mMinZoomScale = restoreState.mDefaultScale; 5318 mMinZoomScaleFixed = true; 5319 } 5320 } else { 5321 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 5322 mMinZoomScaleFixed = false; 5323 } 5324 } else { 5325 mMinZoomScale = restoreState.mMinScale; 5326 mMinZoomScaleFixed = true; 5327 } 5328 if (restoreState.mMaxScale == 0) { 5329 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 5330 } else { 5331 mMaxZoomScale = restoreState.mMaxScale; 5332 } 5333 if (mInitialScaleInPercent > 0) { 5334 setNewZoomScale(mInitialScaleInPercent / 100.0f, 5335 mInitialScaleInPercent != mTextWrapScale * 100, 5336 false); 5337 } else if (restoreState.mViewScale > 0) { 5338 mTextWrapScale = restoreState.mTextWrapScale; 5339 setNewZoomScale(restoreState.mViewScale, false, 5340 false); 5341 } else { 5342 mInZoomOverview = useWideViewport 5343 && settings.getLoadWithOverviewMode(); 5344 float scale; 5345 if (mInZoomOverview) { 5346 scale = (float) viewWidth 5347 / WebViewCore.DEFAULT_VIEWPORT_WIDTH; 5348 } else { 5349 scale = restoreState.mTextWrapScale; 5350 } 5351 setNewZoomScale(scale, Math.abs(scale 5352 - mTextWrapScale) >= 0.01f, false); 5353 } 5354 setContentScrollTo(restoreState.mScrollX, 5355 restoreState.mScrollY); 5356 // As we are on a new page, remove the WebTextView. This 5357 // is necessary for page loads driven by webkit, and in 5358 // particular when the user was on a password field, so 5359 // the WebTextView was visible. 5360 clearTextEntry(); 5361 } 5362 // We update the layout (i.e. request a layout from the 5363 // view system) if the last view size that we sent to 5364 // WebCore matches the view size of the picture we just 5365 // received in the fixed dimension. 5366 final boolean updateLayout = viewSize.x == mLastWidthSent 5367 && viewSize.y == mLastHeightSent; 5368 recordNewContentSize(draw.mWidthHeight.x, 5369 draw.mWidthHeight.y 5370 + (mFindIsUp ? mFindHeight : 0), updateLayout); 5371 if (DebugFlags.WEB_VIEW) { 5372 Rect b = draw.mInvalRegion.getBounds(); 5373 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5374 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5375 } 5376 invalidateContentRect(draw.mInvalRegion.getBounds()); 5377 if (mPictureListener != null) { 5378 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5379 } 5380 if (useWideViewport) { 5381 mZoomOverviewWidth = Math.max( 5382 (int) (viewWidth / mDefaultScale), Math.max( 5383 draw.mMinPrefWidth, draw.mViewPoint.x)); 5384 } 5385 if (!mMinZoomScaleFixed) { 5386 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5387 } 5388 if (!mDrawHistory && mInZoomOverview) { 5389 // fit the content width to the current view. Ignore 5390 // the rounding error case. 5391 if (Math.abs((viewWidth * mInvActualScale) 5392 - mZoomOverviewWidth) > 1) { 5393 setNewZoomScale((float) viewWidth 5394 / mZoomOverviewWidth, Math.abs(mActualScale 5395 - mTextWrapScale) < 0.01f, false); 5396 } 5397 } 5398 break; 5399 } 5400 case WEBCORE_INITIALIZED_MSG_ID: 5401 // nativeCreate sets mNativeClass to a non-zero value 5402 nativeCreate(msg.arg1); 5403 break; 5404 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5405 // Make sure that the textfield is currently focused 5406 // and representing the same node as the pointer. 5407 if (inEditingMode() && 5408 mWebTextView.isSameTextField(msg.arg1)) { 5409 if (msg.getData().getBoolean("password")) { 5410 Spannable text = (Spannable) mWebTextView.getText(); 5411 int start = Selection.getSelectionStart(text); 5412 int end = Selection.getSelectionEnd(text); 5413 mWebTextView.setInPassword(true); 5414 // Restore the selection, which may have been 5415 // ruined by setInPassword. 5416 Spannable pword = 5417 (Spannable) mWebTextView.getText(); 5418 Selection.setSelection(pword, start, end); 5419 // If the text entry has created more events, ignore 5420 // this one. 5421 } else if (msg.arg2 == mTextGeneration) { 5422 mWebTextView.setTextAndKeepSelection( 5423 (String) msg.obj); 5424 } 5425 } 5426 break; 5427 case UPDATE_TEXT_SELECTION_MSG_ID: 5428 if (inEditingMode() 5429 && mWebTextView.isSameTextField(msg.arg1) 5430 && msg.arg2 == mTextGeneration) { 5431 WebViewCore.TextSelectionData tData 5432 = (WebViewCore.TextSelectionData) msg.obj; 5433 mWebTextView.setSelectionFromWebKit(tData.mStart, 5434 tData.mEnd); 5435 } 5436 break; 5437 case MOVE_OUT_OF_PLUGIN: 5438 if (nativePluginEatsNavKey()) { 5439 navHandledKey(msg.arg1, 1, false, 0, true); 5440 } 5441 break; 5442 case UPDATE_TEXT_ENTRY_MSG_ID: 5443 // this is sent after finishing resize in WebViewCore. Make 5444 // sure the text edit box is still on the screen. 5445 if (inEditingMode() && nativeCursorIsTextInput()) { 5446 mWebTextView.bringIntoView(); 5447 rebuildWebTextView(); 5448 } 5449 break; 5450 case CLEAR_TEXT_ENTRY: 5451 clearTextEntry(); 5452 break; 5453 case INVAL_RECT_MSG_ID: { 5454 Rect r = (Rect)msg.obj; 5455 if (r == null) { 5456 invalidate(); 5457 } else { 5458 // we need to scale r from content into view coords, 5459 // which viewInvalidate() does for us 5460 viewInvalidate(r.left, r.top, r.right, r.bottom); 5461 } 5462 break; 5463 } 5464 case REQUEST_FORM_DATA: 5465 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5466 if (mWebTextView.isSameTextField(msg.arg1)) { 5467 mWebTextView.setAdapterCustom(adapter); 5468 } 5469 break; 5470 case UPDATE_CLIPBOARD: 5471 String str = (String) msg.obj; 5472 if (DebugFlags.WEB_VIEW) { 5473 Log.v(LOGTAG, "UPDATE_CLIPBOARD " + str); 5474 } 5475 try { 5476 IClipboard clip = IClipboard.Stub.asInterface( 5477 ServiceManager.getService("clipboard")); 5478 clip.setClipboardText(str); 5479 } catch (android.os.RemoteException e) { 5480 Log.e(LOGTAG, "Clipboard failed", e); 5481 } 5482 break; 5483 case RESUME_WEBCORE_UPDATE: 5484 WebViewCore.resumeUpdate(mWebViewCore); 5485 break; 5486 5487 case LONG_PRESS_CENTER: 5488 // as this is shared by keydown and trackballdown, reset all 5489 // the states 5490 mGotCenterDown = false; 5491 mTrackballDown = false; 5492 // LONG_PRESS_CENTER is sent as a delayed message. If we 5493 // switch to windows overview, the WebView will be 5494 // temporarily removed from the view system. In that case, 5495 // do nothing. 5496 if (getParent() != null) { 5497 performLongClick(); 5498 } 5499 break; 5500 5501 case WEBCORE_NEED_TOUCH_EVENTS: 5502 mForwardTouchEvents = (msg.arg1 != 0); 5503 break; 5504 5505 case PREVENT_TOUCH_ID: 5506 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5507 // dont override if mPreventDrag has been set to no due 5508 // to time out 5509 if (mPreventDrag == PREVENT_DRAG_MAYBE_YES) { 5510 mPreventDrag = msg.arg2 == 1 ? PREVENT_DRAG_YES 5511 : PREVENT_DRAG_NO; 5512 if (mPreventDrag == PREVENT_DRAG_YES) { 5513 mTouchMode = TOUCH_DONE_MODE; 5514 } 5515 } 5516 } 5517 break; 5518 5519 case REQUEST_KEYBOARD: 5520 if (msg.arg1 == 0) { 5521 hideSoftKeyboard(); 5522 } else { 5523 displaySoftKeyboard(false); 5524 } 5525 break; 5526 5527 case SHOW_RECT_MSG_ID: 5528 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 5529 int x = mScrollX; 5530 int left = contentToViewDimension(data.mLeft); 5531 int width = contentToViewDimension(data.mWidth); 5532 int maxWidth = contentToViewDimension(data.mContentWidth); 5533 int viewWidth = getViewWidth(); 5534 if (width < viewWidth) { 5535 // center align 5536 x += left + width / 2 - mScrollX - viewWidth / 2; 5537 } else { 5538 x += (int) (left + data.mXPercentInDoc * width 5539 - mScrollX - data.mXPercentInView * viewWidth); 5540 } 5541 // use the passing content width to cap x as the current 5542 // mContentWidth may not be updated yet 5543 x = Math.max(0, 5544 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 5545 int y = mScrollY; 5546 int top = contentToViewDimension(data.mTop); 5547 int height = contentToViewDimension(data.mHeight); 5548 int maxHeight = contentToViewDimension(data.mContentHeight); 5549 int viewHeight = getViewHeight(); 5550 if (height < viewHeight) { 5551 // middle align 5552 y += top + height / 2 - mScrollY - viewHeight / 2; 5553 } else { 5554 y += (int) (top + data.mYPercentInDoc * height 5555 - mScrollY - data.mYPercentInView * viewHeight); 5556 } 5557 // use the passing content height to cap y as the current 5558 // mContentHeight may not be updated yet 5559 y = Math.max(0, 5560 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 5561 scrollTo(x, y); 5562 break; 5563 5564 default: 5565 super.handleMessage(msg); 5566 break; 5567 } 5568 } 5569 } 5570 5571 // Class used to use a dropdown for a <select> element 5572 private class InvokeListBox implements Runnable { 5573 // Whether the listbox allows multiple selection. 5574 private boolean mMultiple; 5575 // Passed in to a list with multiple selection to tell 5576 // which items are selected. 5577 private int[] mSelectedArray; 5578 // Passed in to a list with single selection to tell 5579 // where the initial selection is. 5580 private int mSelection; 5581 5582 private Container[] mContainers; 5583 5584 // Need these to provide stable ids to my ArrayAdapter, 5585 // which normally does not have stable ids. (Bug 1250098) 5586 private class Container extends Object { 5587 String mString; 5588 boolean mEnabled; 5589 int mId; 5590 5591 public String toString() { 5592 return mString; 5593 } 5594 } 5595 5596 /** 5597 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 5598 * and allow filtering. 5599 */ 5600 private class MyArrayListAdapter extends ArrayAdapter<Container> { 5601 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 5602 super(context, 5603 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 5604 com.android.internal.R.layout.select_dialog_singlechoice, 5605 objects); 5606 } 5607 5608 @Override 5609 public boolean hasStableIds() { 5610 // AdapterView's onChanged method uses this to determine whether 5611 // to restore the old state. Return false so that the old (out 5612 // of date) state does not replace the new, valid state. 5613 return false; 5614 } 5615 5616 private Container item(int position) { 5617 if (position < 0 || position >= getCount()) { 5618 return null; 5619 } 5620 return (Container) getItem(position); 5621 } 5622 5623 @Override 5624 public long getItemId(int position) { 5625 Container item = item(position); 5626 if (item == null) { 5627 return -1; 5628 } 5629 return item.mId; 5630 } 5631 5632 @Override 5633 public boolean areAllItemsEnabled() { 5634 return false; 5635 } 5636 5637 @Override 5638 public boolean isEnabled(int position) { 5639 Container item = item(position); 5640 if (item == null) { 5641 return false; 5642 } 5643 return item.mEnabled; 5644 } 5645 } 5646 5647 private InvokeListBox(String[] array, 5648 boolean[] enabled, int[] selected) { 5649 mMultiple = true; 5650 mSelectedArray = selected; 5651 5652 int length = array.length; 5653 mContainers = new Container[length]; 5654 for (int i = 0; i < length; i++) { 5655 mContainers[i] = new Container(); 5656 mContainers[i].mString = array[i]; 5657 mContainers[i].mEnabled = enabled[i]; 5658 mContainers[i].mId = i; 5659 } 5660 } 5661 5662 private InvokeListBox(String[] array, boolean[] enabled, int 5663 selection) { 5664 mSelection = selection; 5665 mMultiple = false; 5666 5667 int length = array.length; 5668 mContainers = new Container[length]; 5669 for (int i = 0; i < length; i++) { 5670 mContainers[i] = new Container(); 5671 mContainers[i].mString = array[i]; 5672 mContainers[i].mEnabled = enabled[i]; 5673 mContainers[i].mId = i; 5674 } 5675 } 5676 5677 /* 5678 * Whenever the data set changes due to filtering, this class ensures 5679 * that the checked item remains checked. 5680 */ 5681 private class SingleDataSetObserver extends DataSetObserver { 5682 private long mCheckedId; 5683 private ListView mListView; 5684 private Adapter mAdapter; 5685 5686 /* 5687 * Create a new observer. 5688 * @param id The ID of the item to keep checked. 5689 * @param l ListView for getting and clearing the checked states 5690 * @param a Adapter for getting the IDs 5691 */ 5692 public SingleDataSetObserver(long id, ListView l, Adapter a) { 5693 mCheckedId = id; 5694 mListView = l; 5695 mAdapter = a; 5696 } 5697 5698 public void onChanged() { 5699 // The filter may have changed which item is checked. Find the 5700 // item that the ListView thinks is checked. 5701 int position = mListView.getCheckedItemPosition(); 5702 long id = mAdapter.getItemId(position); 5703 if (mCheckedId != id) { 5704 // Clear the ListView's idea of the checked item, since 5705 // it is incorrect 5706 mListView.clearChoices(); 5707 // Search for mCheckedId. If it is in the filtered list, 5708 // mark it as checked 5709 int count = mAdapter.getCount(); 5710 for (int i = 0; i < count; i++) { 5711 if (mAdapter.getItemId(i) == mCheckedId) { 5712 mListView.setItemChecked(i, true); 5713 break; 5714 } 5715 } 5716 } 5717 } 5718 5719 public void onInvalidate() {} 5720 } 5721 5722 public void run() { 5723 final ListView listView = (ListView) LayoutInflater.from(mContext) 5724 .inflate(com.android.internal.R.layout.select_dialog, null); 5725 final MyArrayListAdapter adapter = new 5726 MyArrayListAdapter(mContext, mContainers, mMultiple); 5727 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 5728 .setView(listView).setCancelable(true) 5729 .setInverseBackgroundForced(true); 5730 5731 if (mMultiple) { 5732 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 5733 public void onClick(DialogInterface dialog, int which) { 5734 mWebViewCore.sendMessage( 5735 EventHub.LISTBOX_CHOICES, 5736 adapter.getCount(), 0, 5737 listView.getCheckedItemPositions()); 5738 }}); 5739 b.setNegativeButton(android.R.string.cancel, 5740 new DialogInterface.OnClickListener() { 5741 public void onClick(DialogInterface dialog, int which) { 5742 mWebViewCore.sendMessage( 5743 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5744 }}); 5745 } 5746 final AlertDialog dialog = b.create(); 5747 listView.setAdapter(adapter); 5748 listView.setFocusableInTouchMode(true); 5749 // There is a bug (1250103) where the checks in a ListView with 5750 // multiple items selected are associated with the positions, not 5751 // the ids, so the items do not properly retain their checks when 5752 // filtered. Do not allow filtering on multiple lists until 5753 // that bug is fixed. 5754 5755 listView.setTextFilterEnabled(!mMultiple); 5756 if (mMultiple) { 5757 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 5758 int length = mSelectedArray.length; 5759 for (int i = 0; i < length; i++) { 5760 listView.setItemChecked(mSelectedArray[i], true); 5761 } 5762 } else { 5763 listView.setOnItemClickListener(new OnItemClickListener() { 5764 public void onItemClick(AdapterView parent, View v, 5765 int position, long id) { 5766 mWebViewCore.sendMessage( 5767 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 5768 dialog.dismiss(); 5769 } 5770 }); 5771 if (mSelection != -1) { 5772 listView.setSelection(mSelection); 5773 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 5774 listView.setItemChecked(mSelection, true); 5775 DataSetObserver observer = new SingleDataSetObserver( 5776 adapter.getItemId(mSelection), listView, adapter); 5777 adapter.registerDataSetObserver(observer); 5778 } 5779 } 5780 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 5781 public void onCancel(DialogInterface dialog) { 5782 mWebViewCore.sendMessage( 5783 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5784 } 5785 }); 5786 dialog.show(); 5787 } 5788 } 5789 5790 /* 5791 * Request a dropdown menu for a listbox with multiple selection. 5792 * 5793 * @param array Labels for the listbox. 5794 * @param enabledArray Which positions are enabled. 5795 * @param selectedArray Which positions are initally selected. 5796 */ 5797 void requestListBox(String[] array, boolean[]enabledArray, int[] 5798 selectedArray) { 5799 mPrivateHandler.post( 5800 new InvokeListBox(array, enabledArray, selectedArray)); 5801 } 5802 5803 /* 5804 * Request a dropdown menu for a listbox with single selection or a single 5805 * <select> element. 5806 * 5807 * @param array Labels for the listbox. 5808 * @param enabledArray Which positions are enabled. 5809 * @param selection Which position is initally selected. 5810 */ 5811 void requestListBox(String[] array, boolean[]enabledArray, int selection) { 5812 mPrivateHandler.post( 5813 new InvokeListBox(array, enabledArray, selection)); 5814 } 5815 5816 // called by JNI 5817 private void sendMoveMouse(int frame, int node, int x, int y) { 5818 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 5819 new WebViewCore.CursorData(frame, node, x, y)); 5820 } 5821 5822 /* 5823 * Send a mouse move event to the webcore thread. 5824 * 5825 * @param removeFocus Pass true if the "mouse" cursor is now over a node 5826 * which wants key events, but it is not the focus. This 5827 * will make the visual appear as though nothing is in 5828 * focus. Remove the WebTextView, if present, and stop 5829 * drawing the blinking caret. 5830 * called by JNI 5831 */ 5832 private void sendMoveMouseIfLatest(boolean removeFocus) { 5833 if (removeFocus) { 5834 clearTextEntry(); 5835 setFocusControllerInactive(); 5836 } 5837 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 5838 cursorData()); 5839 } 5840 5841 // called by JNI 5842 private void sendMotionUp(int touchGeneration, 5843 int frame, int node, int x, int y) { 5844 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5845 touchUpData.mMoveGeneration = touchGeneration; 5846 touchUpData.mFrame = frame; 5847 touchUpData.mNode = node; 5848 touchUpData.mX = x; 5849 touchUpData.mY = y; 5850 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5851 } 5852 5853 5854 private int getScaledMaxXScroll() { 5855 int width; 5856 if (mHeightCanMeasure == false) { 5857 width = getViewWidth() / 4; 5858 } else { 5859 Rect visRect = new Rect(); 5860 calcOurVisibleRect(visRect); 5861 width = visRect.width() / 2; 5862 } 5863 // FIXME the divisor should be retrieved from somewhere 5864 return viewToContentX(width); 5865 } 5866 5867 private int getScaledMaxYScroll() { 5868 int height; 5869 if (mHeightCanMeasure == false) { 5870 height = getViewHeight() / 4; 5871 } else { 5872 Rect visRect = new Rect(); 5873 calcOurVisibleRect(visRect); 5874 height = visRect.height() / 2; 5875 } 5876 // FIXME the divisor should be retrieved from somewhere 5877 // the closest thing today is hard-coded into ScrollView.java 5878 // (from ScrollView.java, line 363) int maxJump = height/2; 5879 return Math.round(height * mInvActualScale); 5880 } 5881 5882 /** 5883 * Called by JNI to invalidate view 5884 */ 5885 private void viewInvalidate() { 5886 invalidate(); 5887 } 5888 5889 // return true if the key was handled 5890 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 5891 long time, boolean ignorePlugin) { 5892 if (mNativeClass == 0) { 5893 return false; 5894 } 5895 if (ignorePlugin == false && nativePluginEatsNavKey()) { 5896 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 5897 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 5898 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 5899 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 5900 , 0, 0, 0); 5901 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5902 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5903 return true; 5904 } 5905 mLastCursorTime = time; 5906 mLastCursorBounds = nativeGetCursorRingBounds(); 5907 boolean keyHandled 5908 = nativeMoveCursor(keyCode, count, noScroll) == false; 5909 if (DebugFlags.WEB_VIEW) { 5910 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 5911 + " mLastCursorTime=" + mLastCursorTime 5912 + " handled=" + keyHandled); 5913 } 5914 if (keyHandled == false || mHeightCanMeasure == false) { 5915 return keyHandled; 5916 } 5917 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 5918 if (contentCursorRingBounds.isEmpty()) return keyHandled; 5919 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 5920 Rect visRect = new Rect(); 5921 calcOurVisibleRect(visRect); 5922 Rect outset = new Rect(visRect); 5923 int maxXScroll = visRect.width() / 2; 5924 int maxYScroll = visRect.height() / 2; 5925 outset.inset(-maxXScroll, -maxYScroll); 5926 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 5927 return keyHandled; 5928 } 5929 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 5930 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 5931 maxXScroll); 5932 if (maxH > 0) { 5933 pinScrollBy(maxH, 0, true, 0); 5934 } else { 5935 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 5936 -maxXScroll); 5937 if (maxH < 0) { 5938 pinScrollBy(maxH, 0, true, 0); 5939 } 5940 } 5941 if (mLastCursorBounds.isEmpty()) return keyHandled; 5942 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 5943 return keyHandled; 5944 } 5945 if (DebugFlags.WEB_VIEW) { 5946 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 5947 + contentCursorRingBounds); 5948 } 5949 requestRectangleOnScreen(viewCursorRingBounds); 5950 mUserScroll = true; 5951 return keyHandled; 5952 } 5953 5954 /** 5955 * Set the background color. It's white by default. Pass 5956 * zero to make the view transparent. 5957 * @param color the ARGB color described by Color.java 5958 */ 5959 public void setBackgroundColor(int color) { 5960 mBackgroundColor = color; 5961 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 5962 } 5963 5964 public void debugDump() { 5965 nativeDebugDump(); 5966 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 5967 } 5968 5969 /** 5970 * Update our cache with updatedText. 5971 * @param updatedText The new text to put in our cache. 5972 */ 5973 /* package */ void updateCachedTextfield(String updatedText) { 5974 // Also place our generation number so that when we look at the cache 5975 // we recognize that it is up to date. 5976 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 5977 } 5978 5979 /* package */ native void nativeClearCursor(); 5980 private native void nativeCreate(int ptr); 5981 private native int nativeCursorFramePointer(); 5982 private native Rect nativeCursorNodeBounds(); 5983 /* package */ native int nativeCursorNodePointer(); 5984 /* package */ native boolean nativeCursorMatchesFocus(); 5985 private native boolean nativeCursorIntersects(Rect visibleRect); 5986 private native boolean nativeCursorIsAnchor(); 5987 private native boolean nativeCursorIsPlugin(); 5988 private native boolean nativeCursorIsTextInput(); 5989 private native Point nativeCursorPosition(); 5990 private native String nativeCursorText(); 5991 /** 5992 * Returns true if the native cursor node says it wants to handle key events 5993 * (ala plugins). This can only be called if mNativeClass is non-zero! 5994 */ 5995 private native boolean nativeCursorWantsKeyEvents(); 5996 private native void nativeDebugDump(); 5997 private native void nativeDestroy(); 5998 private native void nativeDrawCursorRing(Canvas content); 5999 private native void nativeDrawMatches(Canvas canvas); 6000 private native void nativeDrawSelection(Canvas content, float scale, 6001 int offset, int x, int y, boolean extendSelection); 6002 private native void nativeDrawSelectionRegion(Canvas content); 6003 private native void nativeDumpDisplayTree(String urlOrNull); 6004 private native int nativeFindAll(String findLower, String findUpper); 6005 private native void nativeFindNext(boolean forward); 6006 private native boolean nativeFocusCandidateIsPassword(); 6007 private native boolean nativeFocusCandidateIsRtlText(); 6008 private native boolean nativeFocusCandidateIsTextField(); 6009 private native boolean nativeFocusCandidateIsTextInput(); 6010 private native int nativeFocusCandidateMaxLength(); 6011 /* package */ native String nativeFocusCandidateName(); 6012 private native Rect nativeFocusCandidateNodeBounds(); 6013 /* package */ native int nativeFocusCandidatePointer(); 6014 private native String nativeFocusCandidateText(); 6015 private native int nativeFocusCandidateTextSize(); 6016 /* package */ native int nativeFocusNodePointer(); 6017 private native Rect nativeGetCursorRingBounds(); 6018 private native Region nativeGetSelection(); 6019 private native boolean nativeHasCursorNode(); 6020 private native boolean nativeHasFocusNode(); 6021 private native void nativeHideCursor(); 6022 private native String nativeImageURI(int x, int y); 6023 private native void nativeInstrumentReport(); 6024 /* package */ native void nativeMoveCursorToNextTextInput(); 6025 // return true if the page has been scrolled 6026 private native boolean nativeMotionUp(int x, int y, int slop); 6027 // returns false if it handled the key 6028 private native boolean nativeMoveCursor(int keyCode, int count, 6029 boolean noScroll); 6030 private native int nativeMoveGeneration(); 6031 private native void nativeMoveSelection(int x, int y, 6032 boolean extendSelection); 6033 private native boolean nativePluginEatsNavKey(); 6034 // Like many other of our native methods, you must make sure that 6035 // mNativeClass is not null before calling this method. 6036 private native void nativeRecordButtons(boolean focused, 6037 boolean pressed, boolean invalidate); 6038 private native void nativeSelectBestAt(Rect rect); 6039 private native void nativeSetFindIsDown(); 6040 private native void nativeSetFollowedLink(boolean followed); 6041 private native void nativeSetHeightCanMeasure(boolean measure); 6042 // Returns a value corresponding to CachedFrame::ImeAction 6043 /* package */ native int nativeTextFieldAction(); 6044 /** 6045 * Perform a click on a currently focused text input. Since it is already 6046 * focused, there is no need to go through the nativeMotionUp code, which 6047 * may change the Cursor. 6048 */ 6049 private native void nativeTextInputMotionUp(int x, int y); 6050 private native int nativeTextGeneration(); 6051 // Never call this version except by updateCachedTextfield(String) - 6052 // we always want to pass in our generation number. 6053 private native void nativeUpdateCachedTextfield(String updatedText, 6054 int generation); 6055 private native void nativeUpdatePluginReceivesEvents(); 6056 // return NO_LEFTEDGE means failure. 6057 private static final int NO_LEFTEDGE = -1; 6058 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 6059} 6060