WebView.java revision 2ba1262b420ef5b9abebcd818c46774b8517f244
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.app.AlertDialog; 20import android.content.Context; 21import android.content.DialogInterface; 22import android.content.Intent; 23import android.content.DialogInterface.OnCancelListener; 24import android.database.DataSetObserver; 25import android.graphics.Bitmap; 26import android.graphics.Canvas; 27import android.graphics.Color; 28import android.graphics.Paint; 29import android.graphics.Path; 30import android.graphics.Picture; 31import android.graphics.Point; 32import android.graphics.Rect; 33import android.graphics.Region; 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.view.Gravity; 49import android.view.KeyEvent; 50import android.view.LayoutInflater; 51import android.view.MotionEvent; 52import android.view.SoundEffectConstants; 53import android.view.VelocityTracker; 54import android.view.View; 55import android.view.ViewConfiguration; 56import android.view.ViewGroup; 57import android.view.ViewParent; 58import android.view.ViewTreeObserver; 59import android.view.animation.AlphaAnimation; 60import android.view.inputmethod.InputMethodManager; 61import android.webkit.WebTextView.AutoCompleteAdapter; 62import android.webkit.WebViewCore.EventHub; 63import android.widget.AbsoluteLayout; 64import android.widget.Adapter; 65import android.widget.AdapterView; 66import android.widget.ArrayAdapter; 67import android.widget.FrameLayout; 68import android.widget.ImageView; 69import android.widget.ListView; 70import android.widget.Scroller; 71import android.widget.Toast; 72import android.widget.ZoomButtonsController; 73import android.widget.ZoomControls; 74import android.widget.AdapterView.OnItemClickListener; 75 76import java.io.File; 77import java.io.FileInputStream; 78import java.io.FileNotFoundException; 79import java.io.FileOutputStream; 80import java.io.IOException; 81import java.net.URLDecoder; 82import java.util.ArrayList; 83import java.util.List; 84 85/** 86 * <p>A View that displays web pages. This class is the basis upon which you 87 * can roll your own web browser or simply display some online content within your Activity. 88 * It uses the WebKit rendering engine to display 89 * web pages and includes methods to navigate forward and backward 90 * through a history, zoom in and out, perform text searches and more.</p> 91 * <p>To enable the built-in zoom, set 92 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 93 * (introduced in API version 3). 94 * <p>Note that, in order for your Activity to access the Internet and load web pages 95 * in a WebView, you must add the <var>INTERNET</var> permissions to your 96 * Android Manifest file:</p> 97 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 98 * 99 * <p>This must be a child of the <code><manifest></code> element.</p> 100 * 101 * <h3>Basic usage</h3> 102 * 103 * <p>By default, a WebView provides no browser-like widgets, does not 104 * enable JavaScript and errors will be ignored. If your goal is only 105 * to display some HTML as a part of your UI, this is probably fine; 106 * the user won't need to interact with the web page beyond reading 107 * it, and the web page won't need to interact with the user. If you 108 * actually want a fully blown web browser, then you probably want to 109 * invoke the Browser application with your URL rather than show it 110 * with a WebView. See {@link android.content.Intent} for more information.</p> 111 * 112 * <pre class="prettyprint"> 113 * WebView webview = new WebView(this); 114 * setContentView(webview); 115 * 116 * // Simplest usage: note that an exception will NOT be thrown 117 * // if there is an error loading this page (see below). 118 * webview.loadUrl("http://slashdot.org/"); 119 * 120 * // Of course you can also load from any string: 121 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 122 * webview.loadData(summary, "text/html", "utf-8"); 123 * // ... although note that there are restrictions on what this HTML can do. 124 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 125 * </pre> 126 * 127 * <p>A WebView has several customization points where you can add your 128 * own behavior. These are:</p> 129 * 130 * <ul> 131 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 132 * This class is called when something that might impact a 133 * browser UI happens, for instance, progress updates and 134 * JavaScript alerts are sent here. 135 * </li> 136 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 137 * It will be called when things happen that impact the 138 * rendering of the content, eg, errors or form submissions. You 139 * can also intercept URL loading here.</li> 140 * <li>Via the {@link android.webkit.WebSettings} class, which contains 141 * miscellaneous configuration. </li> 142 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 143 * This lets you bind Java objects into the WebView so they can be 144 * controlled from the web pages JavaScript.</li> 145 * </ul> 146 * 147 * <p>Here's a more complicated example, showing error handling, 148 * settings, and progress notification:</p> 149 * 150 * <pre class="prettyprint"> 151 * // Let's display the progress in the activity title bar, like the 152 * // browser app does. 153 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 154 * 155 * webview.getSettings().setJavaScriptEnabled(true); 156 * 157 * final Activity activity = this; 158 * webview.setWebChromeClient(new WebChromeClient() { 159 * public void onProgressChanged(WebView view, int progress) { 160 * // Activities and WebViews measure progress with different scales. 161 * // The progress meter will automatically disappear when we reach 100% 162 * activity.setProgress(progress * 1000); 163 * } 164 * }); 165 * webview.setWebViewClient(new WebViewClient() { 166 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 167 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 168 * } 169 * }); 170 * 171 * webview.loadUrl("http://slashdot.org/"); 172 * </pre> 173 * 174 * <h3>Cookie and window management</h3> 175 * 176 * <p>For obvious security reasons, your application has its own 177 * cache, cookie store etc - it does not share the Browser 178 * applications data. Cookies are managed on a separate thread, so 179 * operations like index building don't block the UI 180 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 181 * if you want to use cookies in your application. 182 * </p> 183 * 184 * <p>By default, requests by the HTML to open new windows are 185 * ignored. This is true whether they be opened by JavaScript or by 186 * the target attribute on a link. You can customize your 187 * WebChromeClient to provide your own behaviour for opening multiple windows, 188 * and render them in whatever manner you want.</p> 189 * 190 * <p>Standard behavior for an Activity is to be destroyed and 191 * recreated when the devices orientation is changed. This will cause 192 * the WebView to reload the current page. If you don't want that, you 193 * can set your Activity to handle the orientation and keyboardHidden 194 * changes, and then just leave the WebView alone. It'll automatically 195 * re-orient itself as appropriate.</p> 196 */ 197public class WebView extends AbsoluteLayout 198 implements ViewTreeObserver.OnGlobalFocusChangeListener, 199 ViewGroup.OnHierarchyChangeListener { 200 201 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 202 // the screen all-the-time. Good for profiling our drawing code 203 static private final boolean AUTO_REDRAW_HACK = false; 204 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 205 private boolean mAutoRedraw; 206 207 static final String LOGTAG = "webview"; 208 209 private static class ExtendedZoomControls extends FrameLayout { 210 public ExtendedZoomControls(Context context, AttributeSet attrs) { 211 super(context, attrs); 212 LayoutInflater inflater = (LayoutInflater) 213 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 214 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 215 mPlusMinusZoomControls = (ZoomControls) findViewById( 216 com.android.internal.R.id.zoomControls); 217 mZoomMagnify = (ImageView) findViewById(com.android.internal.R.id.zoomMagnify); 218 } 219 220 public void show(boolean showZoom, boolean canZoomOut) { 221 mPlusMinusZoomControls.setVisibility( 222 showZoom ? View.VISIBLE : View.GONE); 223 mZoomMagnify.setVisibility(canZoomOut ? View.VISIBLE : View.GONE); 224 fade(View.VISIBLE, 0.0f, 1.0f); 225 } 226 227 public void hide() { 228 fade(View.GONE, 1.0f, 0.0f); 229 } 230 231 private void fade(int visibility, float startAlpha, float endAlpha) { 232 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 233 anim.setDuration(500); 234 startAnimation(anim); 235 setVisibility(visibility); 236 } 237 238 public void setIsZoomMagnifyEnabled(boolean isEnabled) { 239 mZoomMagnify.setEnabled(isEnabled); 240 } 241 242 public boolean hasFocus() { 243 return mPlusMinusZoomControls.hasFocus() || mZoomMagnify.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 public void setOnZoomMagnifyClickListener(OnClickListener listener) { 255 mZoomMagnify.setOnClickListener(listener); 256 } 257 258 ZoomControls mPlusMinusZoomControls; 259 ImageView mZoomMagnify; 260 } 261 262 /** 263 * Transportation object for returning WebView across thread boundaries. 264 */ 265 public class WebViewTransport { 266 private WebView mWebview; 267 268 /** 269 * Set the WebView to the transportation object. 270 * @param webview The WebView to transport. 271 */ 272 public synchronized void setWebView(WebView webview) { 273 mWebview = webview; 274 } 275 276 /** 277 * Return the WebView object. 278 * @return WebView The transported WebView object. 279 */ 280 public synchronized WebView getWebView() { 281 return mWebview; 282 } 283 } 284 285 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 286 private final CallbackProxy mCallbackProxy; 287 288 private final WebViewDatabase mDatabase; 289 290 // SSL certificate for the main top-level page (if secure) 291 private SslCertificate mCertificate; 292 293 // Native WebView pointer that is 0 until the native object has been 294 // created. 295 private int mNativeClass; 296 // This would be final but it needs to be set to null when the WebView is 297 // destroyed. 298 private WebViewCore mWebViewCore; 299 // Handler for dispatching UI messages. 300 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 301 private WebTextView mWebTextView; 302 // Used to ignore changes to webkit text that arrives to the UI side after 303 // more key events. 304 private int mTextGeneration; 305 306 // Used by WebViewCore to create child views. 307 /* package */ final ViewManager mViewManager; 308 309 // The list of loaded plugins. 310 private static PluginList sPluginList; 311 312 /** 313 * Position of the last touch event. 314 */ 315 private float mLastTouchX; 316 private float mLastTouchY; 317 318 /** 319 * Time of the last touch event. 320 */ 321 private long mLastTouchTime; 322 323 /** 324 * Time of the last time sending touch event to WebViewCore 325 */ 326 private long mLastSentTouchTime; 327 328 /** 329 * The minimum elapsed time before sending another ACTION_MOVE event to 330 * WebViewCore. This really should be tuned for each type of the devices. 331 * For example in Google Map api test case, it takes Dream device at least 332 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 333 * triggering the layout and drawing the picture. While the same process 334 * takes 60+ms on the current high speed device. If we make 335 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 336 * to WebViewCore queue and the real layout and draw events will be pushed 337 * to further, which slows down the refresh rate. Choose 50 to favor the 338 * current high speed devices. For Dream like devices, 100 is a better 339 * choice. Maybe make this in the buildspec later. 340 */ 341 private static final int TOUCH_SENT_INTERVAL = 50; 342 343 /** 344 * Helper class to get velocity for fling 345 */ 346 VelocityTracker mVelocityTracker; 347 private int mMaximumFling; 348 349 // use this flag to control whether enabling the new double tap zoom 350 static final boolean ENABLE_DOUBLETAP_ZOOM = true; 351 352 /** 353 * Touch mode 354 */ 355 private int mTouchMode = TOUCH_DONE_MODE; 356 private static final int TOUCH_INIT_MODE = 1; 357 private static final int TOUCH_DRAG_START_MODE = 2; 358 private static final int TOUCH_DRAG_MODE = 3; 359 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 360 private static final int TOUCH_SHORTPRESS_MODE = 5; 361 private static final int TOUCH_DOUBLECLICK_MODE = 6; 362 private static final int TOUCH_DONE_MODE = 7; 363 private static final int TOUCH_SELECT_MODE = 8; 364 // touch mode values specific to scale+scroll 365 private static final int FIRST_SCROLL_ZOOM = 9; 366 private static final int SCROLL_ZOOM_ANIMATION_IN = 9; 367 private static final int SCROLL_ZOOM_ANIMATION_OUT = 10; 368 private static final int SCROLL_ZOOM_OUT = 11; 369 private static final int LAST_SCROLL_ZOOM = 11; 370 // end of touch mode values specific to scale+scroll 371 private static final int TOUCH_DOUBLE_TAP_MODE = 12; 372 373 // Whether to forward the touch events to WebCore 374 private boolean mForwardTouchEvents = false; 375 376 // Whether to prevent drag during touch. The initial value depends on 377 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 378 // take control of touch events unless it says no for touch down event. 379 private boolean mPreventDrag; 380 381 // To keep track of whether the current drag was initiated by a WebTextView, 382 // so that we know not to hide the cursor 383 boolean mDragFromTextInput; 384 385 // Whether or not to draw the cursor ring. 386 private boolean mDrawCursorRing = true; 387 388 // true if onPause has been called (and not onResume) 389 private boolean mIsPaused; 390 391 /** 392 * Customizable constant 393 */ 394 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 395 private int mTouchSlopSquare; 396 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 397 private int mDoubleTapSlopSquare; 398 // pre-computed density adjusted navigation slop 399 private int mNavSlop; 400 // This should be ViewConfiguration.getTapTimeout() 401 // But system time out is 100ms, which is too short for the browser. 402 // In the browser, if it switches out of tap too soon, jump tap won't work. 403 private static final int TAP_TIMEOUT = 200; 404 // This should be ViewConfiguration.getLongPressTimeout() 405 // But system time out is 500ms, which is too short for the browser. 406 // With a short timeout, it's difficult to treat trigger a short press. 407 private static final int LONG_PRESS_TIMEOUT = 1000; 408 // needed to avoid flinging after a pause of no movement 409 private static final int MIN_FLING_TIME = 250; 410 // The time that the Zoom Controls are visible before fading away 411 private static final long ZOOM_CONTROLS_TIMEOUT = 412 ViewConfiguration.getZoomControlsTimeout(); 413 // The amount of content to overlap between two screens when going through 414 // pages with the space bar, in pixels. 415 private static final int PAGE_SCROLL_OVERLAP = 24; 416 417 /** 418 * These prevent calling requestLayout if either dimension is fixed. This 419 * depends on the layout parameters and the measure specs. 420 */ 421 boolean mWidthCanMeasure; 422 boolean mHeightCanMeasure; 423 424 // Remember the last dimensions we sent to the native side so we can avoid 425 // sending the same dimensions more than once. 426 int mLastWidthSent; 427 int mLastHeightSent; 428 429 private int mContentWidth; // cache of value from WebViewCore 430 private int mContentHeight; // cache of value from WebViewCore 431 432 // Need to have the separate control for horizontal and vertical scrollbar 433 // style than the View's single scrollbar style 434 private boolean mOverlayHorizontalScrollbar = true; 435 private boolean mOverlayVerticalScrollbar = false; 436 437 // our standard speed. this way small distances will be traversed in less 438 // time than large distances, but we cap the duration, so that very large 439 // distances won't take too long to get there. 440 private static final int STD_SPEED = 480; // pixels per second 441 // time for the longest scroll animation 442 private static final int MAX_DURATION = 750; // milliseconds 443 private Scroller mScroller; 444 445 private boolean mWrapContent; 446 447 /** 448 * Private message ids 449 */ 450 private static final int REMEMBER_PASSWORD = 1; 451 private static final int NEVER_REMEMBER_PASSWORD = 2; 452 private static final int SWITCH_TO_SHORTPRESS = 3; 453 private static final int SWITCH_TO_LONGPRESS = 4; 454 private static final int RELEASE_SINGLE_TAP = 5; 455 private static final int REQUEST_FORM_DATA = 6; 456 private static final int SWITCH_TO_CLICK = 7; 457 private static final int RESUME_WEBCORE_UPDATE = 8; 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; 472 473 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; 480 481 static final String[] HandlerDebugString = { 482 "REMEMBER_PASSWORD", // = 1; 483 "NEVER_REMEMBER_PASSWORD", // = 2; 484 "SWITCH_TO_SHORTPRESS", // = 3; 485 "SWITCH_TO_LONGPRESS", // = 4; 486 "RELEASE_SINGLE_TAP", // = 5; 487 "REQUEST_FORM_DATA", // = 6; 488 "SWITCH_TO_CLICK", // = 7; 489 "RESUME_WEBCORE_UPDATE", // = 8; 490 "9", 491 "SCROLL_TO_MSG_ID", // = 10; 492 "SCROLL_BY_MSG_ID", // = 11; 493 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 494 "SYNC_SCROLL_TO_MSG_ID", // = 13; 495 "NEW_PICTURE_MSG_ID", // = 14; 496 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 497 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 498 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 499 "18", // = 18; 500 "MOVE_OUT_OF_PLUGIN", // = 19; 501 "CLEAR_TEXT_ENTRY", // = 20; 502 "21", // = 21; 503 "UPDATE_CLIPBOARD", // = 22; 504 "LONG_PRESS_CENTER", // = 23; 505 "PREVENT_TOUCH_ID", // = 24; 506 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 507 "INVAL_RECT_MSG_ID", // = 26; 508 "REQUEST_KEYBOARD" // = 27; 509 }; 510 511 // width which view is considered to be fully zoomed out 512 static final int ZOOM_OUT_WIDTH = 1008; 513 514 // default scale limit. Depending on the display density 515 private static float DEFAULT_MAX_ZOOM_SCALE; 516 private static float DEFAULT_MIN_ZOOM_SCALE; 517 // scale limit, which can be set through viewport meta tag in the web page 518 private float mMaxZoomScale; 519 private float mMinZoomScale; 520 private boolean mMinZoomScaleFixed = false; 521 522 // initial scale in percent. 0 means using default. 523 private int mInitialScale = 0; 524 525 // while in the zoom overview mode, the page's width is fully fit to the 526 // current window. The page is alive, in another words, you can click to 527 // follow the links. Double tap will toggle between zoom overview mode and 528 // the last zoom scale. 529 boolean mInZoomOverview = false; 530 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 531 // engadget always have wider mContentWidth no matter what viewport size is. 532 int mZoomOverviewWidth = 0; 533 float mLastScale; 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 super(context, attrs, defStyle); 727 init(); 728 729 mCallbackProxy = new CallbackProxy(context, this); 730 mWebViewCore = new WebViewCore(context, this, mCallbackProxy); 731 mDatabase = WebViewDatabase.getInstance(context); 732 mScroller = new Scroller(context); 733 734 mViewManager = new ViewManager(this); 735 736 mZoomButtonsController = new ZoomButtonsController(this); 737 mZoomButtonsController.setOnZoomListener(mZoomListener); 738 // ZoomButtonsController positions the buttons at the bottom, but in 739 // the middle. Change their layout parameters so they appear on the 740 // right. 741 View controls = mZoomButtonsController.getZoomControls(); 742 ViewGroup.LayoutParams params = controls.getLayoutParams(); 743 if (params instanceof FrameLayout.LayoutParams) { 744 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 745 params; 746 frameParams.gravity = Gravity.RIGHT; 747 } 748 } 749 750 private void updateZoomButtonsEnabled() { 751 boolean canZoomIn = mActualScale < mMaxZoomScale; 752 boolean canZoomOut = mActualScale > mMinZoomScale; 753 if (!canZoomIn && !canZoomOut) { 754 // Hide the zoom in and out buttons, as well as the fit to page 755 // button, if the page cannot zoom 756 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 757 } else { 758 // Bring back the hidden zoom controls. 759 mZoomButtonsController.getZoomControls() 760 .setVisibility(View.VISIBLE); 761 // Set each one individually, as a page may be able to zoom in 762 // or out. 763 mZoomButtonsController.setZoomInEnabled(canZoomIn); 764 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 765 } 766 } 767 768 private void init() { 769 setWillNotDraw(false); 770 setFocusable(true); 771 setFocusableInTouchMode(true); 772 setClickable(true); 773 setLongClickable(true); 774 775 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 776 int slop = configuration.getScaledTouchSlop(); 777 mTouchSlopSquare = slop * slop; 778 mMinLockSnapReverseDistance = slop; 779 slop = configuration.getScaledDoubleTapSlop(); 780 mDoubleTapSlopSquare = slop * slop; 781 final float density = getContext().getResources().getDisplayMetrics().density; 782 // use one line height, 16 based on our current default font, for how 783 // far we allow a touch be away from the edge of a link 784 mNavSlop = (int) (16 * density); 785 // density adjusted scale factors 786 DEFAULT_SCALE_PERCENT = (int) (100 * density); 787 mDefaultScale = density; 788 mActualScale = density; 789 mInvActualScale = 1 / density; 790 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 791 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 792 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 793 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 794 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 795 } 796 797 /* package */void updateDefaultZoomDensity(int zoomDensity) { 798 final float density = getContext().getResources().getDisplayMetrics().density 799 * 100 / zoomDensity; 800 if (Math.abs(density - mDefaultScale) > 0.01) { 801 float scaleFactor = density / mDefaultScale; 802 // adjust the limits 803 mNavSlop = (int) (16 * density); 804 DEFAULT_SCALE_PERCENT = (int) (100 * density); 805 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 806 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 807 mDefaultScale = density; 808 mMaxZoomScale *= scaleFactor; 809 mMinZoomScale *= scaleFactor; 810 setNewZoomScale(mActualScale * scaleFactor, false); 811 } 812 } 813 814 /* package */ boolean onSavePassword(String schemePlusHost, String username, 815 String password, final Message resumeMsg) { 816 boolean rVal = false; 817 if (resumeMsg == null) { 818 // null resumeMsg implies saving password silently 819 mDatabase.setUsernamePassword(schemePlusHost, username, password); 820 } else { 821 final Message remember = mPrivateHandler.obtainMessage( 822 REMEMBER_PASSWORD); 823 remember.getData().putString("host", schemePlusHost); 824 remember.getData().putString("username", username); 825 remember.getData().putString("password", password); 826 remember.obj = resumeMsg; 827 828 final Message neverRemember = mPrivateHandler.obtainMessage( 829 NEVER_REMEMBER_PASSWORD); 830 neverRemember.getData().putString("host", schemePlusHost); 831 neverRemember.getData().putString("username", username); 832 neverRemember.getData().putString("password", password); 833 neverRemember.obj = resumeMsg; 834 835 new AlertDialog.Builder(getContext()) 836 .setTitle(com.android.internal.R.string.save_password_label) 837 .setMessage(com.android.internal.R.string.save_password_message) 838 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 839 new DialogInterface.OnClickListener() { 840 public void onClick(DialogInterface dialog, int which) { 841 resumeMsg.sendToTarget(); 842 } 843 }) 844 .setNeutralButton(com.android.internal.R.string.save_password_remember, 845 new DialogInterface.OnClickListener() { 846 public void onClick(DialogInterface dialog, int which) { 847 remember.sendToTarget(); 848 } 849 }) 850 .setNegativeButton(com.android.internal.R.string.save_password_never, 851 new DialogInterface.OnClickListener() { 852 public void onClick(DialogInterface dialog, int which) { 853 neverRemember.sendToTarget(); 854 } 855 }) 856 .setOnCancelListener(new OnCancelListener() { 857 public void onCancel(DialogInterface dialog) { 858 resumeMsg.sendToTarget(); 859 } 860 }).show(); 861 // Return true so that WebViewCore will pause while the dialog is 862 // up. 863 rVal = true; 864 } 865 return rVal; 866 } 867 868 @Override 869 public void setScrollBarStyle(int style) { 870 if (style == View.SCROLLBARS_INSIDE_INSET 871 || style == View.SCROLLBARS_OUTSIDE_INSET) { 872 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 873 } else { 874 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 875 } 876 super.setScrollBarStyle(style); 877 } 878 879 /** 880 * Specify whether the horizontal scrollbar has overlay style. 881 * @param overlay TRUE if horizontal scrollbar should have overlay style. 882 */ 883 public void setHorizontalScrollbarOverlay(boolean overlay) { 884 mOverlayHorizontalScrollbar = overlay; 885 } 886 887 /** 888 * Specify whether the vertical scrollbar has overlay style. 889 * @param overlay TRUE if vertical scrollbar should have overlay style. 890 */ 891 public void setVerticalScrollbarOverlay(boolean overlay) { 892 mOverlayVerticalScrollbar = overlay; 893 } 894 895 /** 896 * Return whether horizontal scrollbar has overlay style 897 * @return TRUE if horizontal scrollbar has overlay style. 898 */ 899 public boolean overlayHorizontalScrollbar() { 900 return mOverlayHorizontalScrollbar; 901 } 902 903 /** 904 * Return whether vertical scrollbar has overlay style 905 * @return TRUE if vertical scrollbar has overlay style. 906 */ 907 public boolean overlayVerticalScrollbar() { 908 return mOverlayVerticalScrollbar; 909 } 910 911 /* 912 * Return the width of the view where the content of WebView should render 913 * to. 914 */ 915 private int getViewWidth() { 916 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 917 return getWidth(); 918 } else { 919 return getWidth() - getVerticalScrollbarWidth(); 920 } 921 } 922 923 /* 924 * Return the height of the view where the content of WebView should render 925 * to. 926 */ 927 private int getViewHeight() { 928 if (!isHorizontalScrollBarEnabled() || mOverlayHorizontalScrollbar) { 929 return getHeight(); 930 } else { 931 return getHeight() - getHorizontalScrollbarHeight(); 932 } 933 } 934 935 /** 936 * @return The SSL certificate for the main top-level page or null if 937 * there is no certificate (the site is not secure). 938 */ 939 public SslCertificate getCertificate() { 940 return mCertificate; 941 } 942 943 /** 944 * Sets the SSL certificate for the main top-level page. 945 */ 946 public void setCertificate(SslCertificate certificate) { 947 // here, the certificate can be null (if the site is not secure) 948 mCertificate = certificate; 949 } 950 951 //------------------------------------------------------------------------- 952 // Methods called by activity 953 //------------------------------------------------------------------------- 954 955 /** 956 * Save the username and password for a particular host in the WebView's 957 * internal database. 958 * @param host The host that required the credentials. 959 * @param username The username for the given host. 960 * @param password The password for the given host. 961 */ 962 public void savePassword(String host, String username, String password) { 963 mDatabase.setUsernamePassword(host, username, password); 964 } 965 966 /** 967 * Set the HTTP authentication credentials for a given host and realm. 968 * 969 * @param host The host for the credentials. 970 * @param realm The realm for the credentials. 971 * @param username The username for the password. If it is null, it means 972 * password can't be saved. 973 * @param password The password 974 */ 975 public void setHttpAuthUsernamePassword(String host, String realm, 976 String username, String password) { 977 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 978 } 979 980 /** 981 * Retrieve the HTTP authentication username and password for a given 982 * host & realm pair 983 * 984 * @param host The host for which the credentials apply. 985 * @param realm The realm for which the credentials apply. 986 * @return String[] if found, String[0] is username, which can be null and 987 * String[1] is password. Return null if it can't find anything. 988 */ 989 public String[] getHttpAuthUsernamePassword(String host, String realm) { 990 return mDatabase.getHttpAuthUsernamePassword(host, realm); 991 } 992 993 /** 994 * Destroy the internal state of the WebView. This method should be called 995 * after the WebView has been removed from the view system. No other 996 * methods may be called on a WebView after destroy. 997 */ 998 public void destroy() { 999 clearTextEntry(); 1000 if (mWebViewCore != null) { 1001 // Set the handlers to null before destroying WebViewCore so no 1002 // more messages will be posted. 1003 mCallbackProxy.setWebViewClient(null); 1004 mCallbackProxy.setWebChromeClient(null); 1005 // Tell WebViewCore to destroy itself 1006 WebViewCore webViewCore = mWebViewCore; 1007 mWebViewCore = null; // prevent using partial webViewCore 1008 webViewCore.destroy(); 1009 // Remove any pending messages that might not be serviced yet. 1010 mPrivateHandler.removeCallbacksAndMessages(null); 1011 mCallbackProxy.removeCallbacksAndMessages(null); 1012 // Wake up the WebCore thread just in case it is waiting for a 1013 // javascript dialog. 1014 synchronized (mCallbackProxy) { 1015 mCallbackProxy.notify(); 1016 } 1017 } 1018 if (mNativeClass != 0) { 1019 nativeDestroy(); 1020 mNativeClass = 0; 1021 } 1022 } 1023 1024 /** 1025 * Enables platform notifications of data state and proxy changes. 1026 */ 1027 public static void enablePlatformNotifications() { 1028 Network.enablePlatformNotifications(); 1029 } 1030 1031 /** 1032 * If platform notifications are enabled, this should be called 1033 * from the Activity's onPause() or onStop(). 1034 */ 1035 public static void disablePlatformNotifications() { 1036 Network.disablePlatformNotifications(); 1037 } 1038 1039 /** 1040 * Sets JavaScript engine flags. 1041 * 1042 * @param flags JS engine flags in a String 1043 * 1044 * @hide pending API solidification 1045 */ 1046 public void setJsFlags(String flags) { 1047 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1048 } 1049 1050 /** 1051 * Inform WebView of the network state. This is used to set 1052 * the javascript property window.navigator.isOnline and 1053 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1054 * @param networkUp boolean indicating if network is available 1055 */ 1056 public void setNetworkAvailable(boolean networkUp) { 1057 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1058 networkUp ? 1 : 0, 0); 1059 } 1060 1061 /** 1062 * Save the state of this WebView used in 1063 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1064 * method no longer stores the display data for this WebView. The previous 1065 * behavior could potentially leak files if {@link #restoreState} was never 1066 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1067 * and restoring the display data. 1068 * @param outState The Bundle to store the WebView state. 1069 * @return The same copy of the back/forward list used to save the state. If 1070 * saveState fails, the returned list will be null. 1071 * @see #savePicture 1072 * @see #restorePicture 1073 */ 1074 public WebBackForwardList saveState(Bundle outState) { 1075 if (outState == null) { 1076 return null; 1077 } 1078 // We grab a copy of the back/forward list because a client of WebView 1079 // may have invalidated the history list by calling clearHistory. 1080 WebBackForwardList list = copyBackForwardList(); 1081 final int currentIndex = list.getCurrentIndex(); 1082 final int size = list.getSize(); 1083 // We should fail saving the state if the list is empty or the index is 1084 // not in a valid range. 1085 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1086 return null; 1087 } 1088 outState.putInt("index", currentIndex); 1089 // FIXME: This should just be a byte[][] instead of ArrayList but 1090 // Parcel.java does not have the code to handle multi-dimensional 1091 // arrays. 1092 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1093 for (int i = 0; i < size; i++) { 1094 WebHistoryItem item = list.getItemAtIndex(i); 1095 byte[] data = item.getFlattenedData(); 1096 if (data == null) { 1097 // It would be very odd to not have any data for a given history 1098 // item. And we will fail to rebuild the history list without 1099 // flattened data. 1100 return null; 1101 } 1102 history.add(data); 1103 } 1104 outState.putSerializable("history", history); 1105 if (mCertificate != null) { 1106 outState.putBundle("certificate", 1107 SslCertificate.saveState(mCertificate)); 1108 } 1109 return list; 1110 } 1111 1112 /** 1113 * Save the current display data to the Bundle given. Used in conjunction 1114 * with {@link #saveState}. 1115 * @param b A Bundle to store the display data. 1116 * @param dest The file to store the serialized picture data. Will be 1117 * overwritten with this WebView's picture data. 1118 * @return True if the picture was successfully saved. 1119 */ 1120 public boolean savePicture(Bundle b, File dest) { 1121 if (dest == null || b == null) { 1122 return false; 1123 } 1124 final Picture p = capturePicture(); 1125 try { 1126 final FileOutputStream out = new FileOutputStream(dest); 1127 p.writeToStream(out); 1128 out.close(); 1129 } catch (FileNotFoundException e){ 1130 e.printStackTrace(); 1131 } catch (IOException e) { 1132 e.printStackTrace(); 1133 } catch (RuntimeException e) { 1134 e.printStackTrace(); 1135 } 1136 if (dest.length() > 0) { 1137 b.putInt("scrollX", mScrollX); 1138 b.putInt("scrollY", mScrollY); 1139 b.putFloat("scale", mActualScale); 1140 if (mInZoomOverview) { 1141 b.putFloat("lastScale", mLastScale); 1142 } 1143 return true; 1144 } 1145 return false; 1146 } 1147 1148 /** 1149 * Restore the display data that was save in {@link #savePicture}. Used in 1150 * conjunction with {@link #restoreState}. 1151 * @param b A Bundle containing the saved display data. 1152 * @param src The file where the picture data was stored. 1153 * @return True if the picture was successfully restored. 1154 */ 1155 public boolean restorePicture(Bundle b, File src) { 1156 if (src == null || b == null) { 1157 return false; 1158 } 1159 if (src.exists()) { 1160 Picture p = null; 1161 try { 1162 final FileInputStream in = new FileInputStream(src); 1163 p = Picture.createFromStream(in); 1164 in.close(); 1165 } catch (FileNotFoundException e){ 1166 e.printStackTrace(); 1167 } catch (RuntimeException e) { 1168 e.printStackTrace(); 1169 } catch (IOException e) { 1170 e.printStackTrace(); 1171 } 1172 if (p != null) { 1173 int sx = b.getInt("scrollX", 0); 1174 int sy = b.getInt("scrollY", 0); 1175 float scale = b.getFloat("scale", 1.0f); 1176 mDrawHistory = true; 1177 mHistoryPicture = p; 1178 mScrollX = sx; 1179 mScrollY = sy; 1180 mHistoryWidth = Math.round(p.getWidth() * scale); 1181 mHistoryHeight = Math.round(p.getHeight() * scale); 1182 // as getWidth() / getHeight() of the view are not 1183 // available yet, set up mActualScale, so that when 1184 // onSizeChanged() is called, the rest will be set 1185 // correctly 1186 mActualScale = scale; 1187 float lastScale = b.getFloat("lastScale", -1.0f); 1188 if (lastScale > 0) { 1189 mInZoomOverview = true; 1190 mLastScale = lastScale; 1191 } else { 1192 mInZoomOverview = false; 1193 } 1194 invalidate(); 1195 return true; 1196 } 1197 } 1198 return false; 1199 } 1200 1201 /** 1202 * Restore the state of this WebView from the given map used in 1203 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1204 * be called to restore the state of the WebView before using the object. If 1205 * it is called after the WebView has had a chance to build state (load 1206 * pages, create a back/forward list, etc.) there may be undesirable 1207 * side-effects. Please note that this method no longer restores the 1208 * display data for this WebView. See {@link #savePicture} and {@link 1209 * #restorePicture} for saving and restoring the display data. 1210 * @param inState The incoming Bundle of state. 1211 * @return The restored back/forward list or null if restoreState failed. 1212 * @see #savePicture 1213 * @see #restorePicture 1214 */ 1215 public WebBackForwardList restoreState(Bundle inState) { 1216 WebBackForwardList returnList = null; 1217 if (inState == null) { 1218 return returnList; 1219 } 1220 if (inState.containsKey("index") && inState.containsKey("history")) { 1221 mCertificate = SslCertificate.restoreState( 1222 inState.getBundle("certificate")); 1223 1224 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1225 final int index = inState.getInt("index"); 1226 // We can't use a clone of the list because we need to modify the 1227 // shared copy, so synchronize instead to prevent concurrent 1228 // modifications. 1229 synchronized (list) { 1230 final List<byte[]> history = 1231 (List<byte[]>) inState.getSerializable("history"); 1232 final int size = history.size(); 1233 // Check the index bounds so we don't crash in native code while 1234 // restoring the history index. 1235 if (index < 0 || index >= size) { 1236 return null; 1237 } 1238 for (int i = 0; i < size; i++) { 1239 byte[] data = history.remove(0); 1240 if (data == null) { 1241 // If we somehow have null data, we cannot reconstruct 1242 // the item and thus our history list cannot be rebuilt. 1243 return null; 1244 } 1245 WebHistoryItem item = new WebHistoryItem(data); 1246 list.addHistoryItem(item); 1247 } 1248 // Grab the most recent copy to return to the caller. 1249 returnList = copyBackForwardList(); 1250 // Update the copy to have the correct index. 1251 returnList.setCurrentIndex(index); 1252 } 1253 // Remove all pending messages because we are restoring previous 1254 // state. 1255 mWebViewCore.removeMessages(); 1256 // Send a restore state message. 1257 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1258 } 1259 return returnList; 1260 } 1261 1262 /** 1263 * Load the given url. 1264 * @param url The url of the resource to load. 1265 */ 1266 public void loadUrl(String url) { 1267 if (url == null) { 1268 return; 1269 } 1270 switchOutDrawHistory(); 1271 mWebViewCore.sendMessage(EventHub.LOAD_URL, url); 1272 clearTextEntry(); 1273 } 1274 1275 /** 1276 * Load the url with postData using "POST" method into the WebView. If url 1277 * is not a network url, it will be loaded with {link 1278 * {@link #loadUrl(String)} instead. 1279 * 1280 * @param url The url of the resource to load. 1281 * @param postData The data will be passed to "POST" request. 1282 * 1283 * @hide pending API solidification 1284 */ 1285 public void postUrl(String url, byte[] postData) { 1286 if (URLUtil.isNetworkUrl(url)) { 1287 switchOutDrawHistory(); 1288 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1289 arg.mUrl = url; 1290 arg.mPostData = postData; 1291 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1292 clearTextEntry(); 1293 } else { 1294 loadUrl(url); 1295 } 1296 } 1297 1298 /** 1299 * Load the given data into the WebView. This will load the data into 1300 * WebView using the data: scheme. Content loaded through this mechanism 1301 * does not have the ability to load content from the network. 1302 * @param data A String of data in the given encoding. 1303 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1304 * @param encoding The encoding of the data. i.e. utf-8, base64 1305 */ 1306 public void loadData(String data, String mimeType, String encoding) { 1307 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1308 } 1309 1310 /** 1311 * Load the given data into the WebView, use the provided URL as the base 1312 * URL for the content. The base URL is the URL that represents the page 1313 * that is loaded through this interface. As such, it is used for the 1314 * history entry and to resolve any relative URLs. The failUrl is used if 1315 * browser fails to load the data provided. If it is empty or null, and the 1316 * load fails, then no history entry is created. 1317 * <p> 1318 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1319 * files through "file:///android_asset/" for the sub resources is more 1320 * restricted. If you provide null or empty string as baseUrl, you won't be 1321 * able to access asset files. If the baseUrl is anything other than 1322 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1323 * sub resources. 1324 * 1325 * @param baseUrl Url to resolve relative paths with, if null defaults to 1326 * "about:blank" 1327 * @param data A String of data in the given encoding. 1328 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1329 * defaults to "text/html" 1330 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1331 * @param failUrl URL to use if the content fails to load or null. 1332 */ 1333 public void loadDataWithBaseURL(String baseUrl, String data, 1334 String mimeType, String encoding, String failUrl) { 1335 1336 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1337 loadData(data, mimeType, encoding); 1338 return; 1339 } 1340 switchOutDrawHistory(); 1341 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1342 arg.mBaseUrl = baseUrl; 1343 arg.mData = data; 1344 arg.mMimeType = mimeType; 1345 arg.mEncoding = encoding; 1346 arg.mFailUrl = failUrl; 1347 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1348 clearTextEntry(); 1349 } 1350 1351 /** 1352 * Stop the current load. 1353 */ 1354 public void stopLoading() { 1355 // TODO: should we clear all the messages in the queue before sending 1356 // STOP_LOADING? 1357 switchOutDrawHistory(); 1358 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1359 } 1360 1361 /** 1362 * Reload the current url. 1363 */ 1364 public void reload() { 1365 switchOutDrawHistory(); 1366 mWebViewCore.sendMessage(EventHub.RELOAD); 1367 } 1368 1369 /** 1370 * Return true if this WebView has a back history item. 1371 * @return True iff this WebView has a back history item. 1372 */ 1373 public boolean canGoBack() { 1374 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1375 synchronized (l) { 1376 if (l.getClearPending()) { 1377 return false; 1378 } else { 1379 return l.getCurrentIndex() > 0; 1380 } 1381 } 1382 } 1383 1384 /** 1385 * Go back in the history of this WebView. 1386 */ 1387 public void goBack() { 1388 goBackOrForward(-1); 1389 } 1390 1391 /** 1392 * Return true if this WebView has a forward history item. 1393 * @return True iff this Webview has a forward history item. 1394 */ 1395 public boolean canGoForward() { 1396 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1397 synchronized (l) { 1398 if (l.getClearPending()) { 1399 return false; 1400 } else { 1401 return l.getCurrentIndex() < l.getSize() - 1; 1402 } 1403 } 1404 } 1405 1406 /** 1407 * Go forward in the history of this WebView. 1408 */ 1409 public void goForward() { 1410 goBackOrForward(1); 1411 } 1412 1413 /** 1414 * Return true if the page can go back or forward the given 1415 * number of steps. 1416 * @param steps The negative or positive number of steps to move the 1417 * history. 1418 */ 1419 public boolean canGoBackOrForward(int steps) { 1420 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1421 synchronized (l) { 1422 if (l.getClearPending()) { 1423 return false; 1424 } else { 1425 int newIndex = l.getCurrentIndex() + steps; 1426 return newIndex >= 0 && newIndex < l.getSize(); 1427 } 1428 } 1429 } 1430 1431 /** 1432 * Go to the history item that is the number of steps away from 1433 * the current item. Steps is negative if backward and positive 1434 * if forward. 1435 * @param steps The number of steps to take back or forward in the back 1436 * forward list. 1437 */ 1438 public void goBackOrForward(int steps) { 1439 goBackOrForward(steps, false); 1440 } 1441 1442 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1443 // every time we go back or forward, we want to reset the 1444 // WebView certificate: 1445 // if the new site is secure, we will reload it and get a 1446 // new certificate set; 1447 // if the new site is not secure, the certificate must be 1448 // null, and that will be the case 1449 mCertificate = null; 1450 if (steps != 0) { 1451 clearTextEntry(); 1452 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1453 ignoreSnapshot ? 1 : 0); 1454 } 1455 } 1456 1457 private boolean extendScroll(int y) { 1458 int finalY = mScroller.getFinalY(); 1459 int newY = pinLocY(finalY + y); 1460 if (newY == finalY) return false; 1461 mScroller.setFinalY(newY); 1462 mScroller.extendDuration(computeDuration(0, y)); 1463 return true; 1464 } 1465 1466 /** 1467 * Scroll the contents of the view up by half the view size 1468 * @param top true to jump to the top of the page 1469 * @return true if the page was scrolled 1470 */ 1471 public boolean pageUp(boolean top) { 1472 if (mNativeClass == 0) { 1473 return false; 1474 } 1475 nativeClearCursor(); // start next trackball movement from page edge 1476 if (top) { 1477 // go to the top of the document 1478 return pinScrollTo(mScrollX, 0, true, 0); 1479 } 1480 // Page up 1481 int h = getHeight(); 1482 int y; 1483 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1484 y = -h + PAGE_SCROLL_OVERLAP; 1485 } else { 1486 y = -h / 2; 1487 } 1488 mUserScroll = true; 1489 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1490 : extendScroll(y); 1491 } 1492 1493 /** 1494 * Scroll the contents of the view down by half the page size 1495 * @param bottom true to jump to bottom of page 1496 * @return true if the page was scrolled 1497 */ 1498 public boolean pageDown(boolean bottom) { 1499 if (mNativeClass == 0) { 1500 return false; 1501 } 1502 nativeClearCursor(); // start next trackball movement from page edge 1503 if (bottom) { 1504 return pinScrollTo(mScrollX, mContentHeight, true, 0); 1505 } 1506 // Page down. 1507 int h = getHeight(); 1508 int y; 1509 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1510 y = h - PAGE_SCROLL_OVERLAP; 1511 } else { 1512 y = h / 2; 1513 } 1514 mUserScroll = true; 1515 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1516 : extendScroll(y); 1517 } 1518 1519 /** 1520 * Clear the view so that onDraw() will draw nothing but white background, 1521 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1522 */ 1523 public void clearView() { 1524 mContentWidth = 0; 1525 mContentHeight = 0; 1526 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1527 } 1528 1529 /** 1530 * Return a new picture that captures the current display of the webview. 1531 * This is a copy of the display, and will be unaffected if the webview 1532 * later loads a different URL. 1533 * 1534 * @return a picture containing the current contents of the view. Note this 1535 * picture is of the entire document, and is not restricted to the 1536 * bounds of the view. 1537 */ 1538 public Picture capturePicture() { 1539 if (null == mWebViewCore) return null; // check for out of memory tab 1540 return mWebViewCore.copyContentPicture(); 1541 } 1542 1543 /** 1544 * Return true if the browser is displaying a TextView for text input. 1545 */ 1546 private boolean inEditingMode() { 1547 return mWebTextView != null && mWebTextView.getParent() != null 1548 && mWebTextView.hasFocus(); 1549 } 1550 1551 private void clearTextEntry() { 1552 if (inEditingMode()) { 1553 mWebTextView.remove(); 1554 } 1555 } 1556 1557 /** 1558 * Return the current scale of the WebView 1559 * @return The current scale. 1560 */ 1561 public float getScale() { 1562 return mActualScale; 1563 } 1564 1565 /** 1566 * Set the initial scale for the WebView. 0 means default. If 1567 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1568 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1569 * WebView starts will this value as initial scale. 1570 * 1571 * @param scaleInPercent The initial scale in percent. 1572 */ 1573 public void setInitialScale(int scaleInPercent) { 1574 mInitialScale = scaleInPercent; 1575 } 1576 1577 /** 1578 * Invoke the graphical zoom picker widget for this WebView. This will 1579 * result in the zoom widget appearing on the screen to control the zoom 1580 * level of this WebView. 1581 */ 1582 public void invokeZoomPicker() { 1583 if (!getSettings().supportZoom()) { 1584 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1585 return; 1586 } 1587 clearTextEntry(); 1588 if (getSettings().getBuiltInZoomControls()) { 1589 mZoomButtonsController.setVisible(true); 1590 } else { 1591 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1592 mPrivateHandler.postDelayed(mZoomControlRunnable, 1593 ZOOM_CONTROLS_TIMEOUT); 1594 } 1595 } 1596 1597 /** 1598 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1599 * is found and the anchor has a non-javascript url, the HitTestResult type 1600 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1601 * anchor does not have a url or if it is a javascript url, the type will 1602 * be UNKNOWN_TYPE and the url has to be retrieved through 1603 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1604 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1605 * the "extra" field. A type of 1606 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1607 * a child node. If a phone number is found, the HitTestResult type is set 1608 * to PHONE_TYPE and the phone number is set in the "extra" field of 1609 * HitTestResult. If a map address is found, the HitTestResult type is set 1610 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1611 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1612 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1613 * HitTestResult type is set to UNKNOWN_TYPE. 1614 */ 1615 public HitTestResult getHitTestResult() { 1616 if (mNativeClass == 0) { 1617 return null; 1618 } 1619 1620 HitTestResult result = new HitTestResult(); 1621 if (nativeHasCursorNode()) { 1622 if (nativeCursorIsTextInput()) { 1623 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1624 } else { 1625 String text = nativeCursorText(); 1626 if (text != null) { 1627 if (text.startsWith(SCHEME_TEL)) { 1628 result.setType(HitTestResult.PHONE_TYPE); 1629 result.setExtra(text.substring(SCHEME_TEL.length())); 1630 } else if (text.startsWith(SCHEME_MAILTO)) { 1631 result.setType(HitTestResult.EMAIL_TYPE); 1632 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1633 } else if (text.startsWith(SCHEME_GEO)) { 1634 result.setType(HitTestResult.GEO_TYPE); 1635 result.setExtra(URLDecoder.decode(text 1636 .substring(SCHEME_GEO.length()))); 1637 } else if (nativeCursorIsAnchor()) { 1638 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1639 result.setExtra(text); 1640 } 1641 } 1642 } 1643 } 1644 int type = result.getType(); 1645 if (type == HitTestResult.UNKNOWN_TYPE 1646 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1647 // Now check to see if it is an image. 1648 int contentX = viewToContent((int) mLastTouchX + mScrollX); 1649 int contentY = viewToContent((int) mLastTouchY + mScrollY); 1650 String text = nativeImageURI(contentX, contentY); 1651 if (text != null) { 1652 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1653 HitTestResult.IMAGE_TYPE : 1654 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1655 result.setExtra(text); 1656 } 1657 } 1658 return result; 1659 } 1660 1661 /** 1662 * Request the href of an anchor element due to getFocusNodePath returning 1663 * "href." If hrefMsg is null, this method returns immediately and does not 1664 * dispatch hrefMsg to its target. 1665 * 1666 * @param hrefMsg This message will be dispatched with the result of the 1667 * request as the data member with "url" as key. The result can 1668 * be null. 1669 */ 1670 // FIXME: API change required to change the name of this function. We now 1671 // look at the cursor node, and not the focus node. Also, what is 1672 // getFocusNodePath? 1673 public void requestFocusNodeHref(Message hrefMsg) { 1674 if (hrefMsg == null || mNativeClass == 0) { 1675 return; 1676 } 1677 if (nativeCursorIsAnchor()) { 1678 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1679 nativeCursorFramePointer(), nativeCursorNodePointer(), 1680 hrefMsg); 1681 } 1682 } 1683 1684 /** 1685 * Request the url of the image last touched by the user. msg will be sent 1686 * to its target with a String representing the url as its object. 1687 * 1688 * @param msg This message will be dispatched with the result of the request 1689 * as the data member with "url" as key. The result can be null. 1690 */ 1691 public void requestImageRef(Message msg) { 1692 int contentX = viewToContent((int) mLastTouchX + mScrollX); 1693 int contentY = viewToContent((int) mLastTouchY + mScrollY); 1694 String ref = nativeImageURI(contentX, contentY); 1695 Bundle data = msg.getData(); 1696 data.putString("url", ref); 1697 msg.setData(data); 1698 msg.sendToTarget(); 1699 } 1700 1701 private static int pinLoc(int x, int viewMax, int docMax) { 1702// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1703 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1704 // pin the short document to the top/left of the screen 1705 x = 0; 1706// Log.d(LOGTAG, "--- center " + x); 1707 } else if (x < 0) { 1708 x = 0; 1709// Log.d(LOGTAG, "--- zero"); 1710 } else if (x + viewMax > docMax) { 1711 x = docMax - viewMax; 1712// Log.d(LOGTAG, "--- pin " + x); 1713 } 1714 return x; 1715 } 1716 1717 // Expects x in view coordinates 1718 private int pinLocX(int x) { 1719 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1720 } 1721 1722 // Expects y in view coordinates 1723 private int pinLocY(int y) { 1724 return pinLoc(y, getViewHeight(), computeVerticalScrollRange()); 1725 } 1726 1727 /*package*/ int viewToContent(int x) { 1728 return Math.round(x * mInvActualScale); 1729 } 1730 1731 /*package*/ int contentToView(int x) { 1732 return Math.round(x * mActualScale); 1733 } 1734 1735 // Called by JNI to invalidate the View, given rectangle coordinates in 1736 // content space 1737 private void viewInvalidate(int l, int t, int r, int b) { 1738 invalidate(contentToView(l), contentToView(t), contentToView(r), 1739 contentToView(b)); 1740 } 1741 1742 // Called by JNI to invalidate the View after a delay, given rectangle 1743 // coordinates in content space 1744 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1745 postInvalidateDelayed(delay, contentToView(l), contentToView(t), 1746 contentToView(r), contentToView(b)); 1747 } 1748 1749 private Rect contentToView(Rect x) { 1750 return new Rect(contentToView(x.left), contentToView(x.top) 1751 , contentToView(x.right), contentToView(x.bottom)); 1752 } 1753 1754 /* call from webcoreview.draw(), so we're still executing in the UI thread 1755 */ 1756 private void recordNewContentSize(int w, int h, boolean updateLayout) { 1757 1758 // premature data from webkit, ignore 1759 if ((w | h) == 0) { 1760 return; 1761 } 1762 1763 // don't abort a scroll animation if we didn't change anything 1764 if (mContentWidth != w || mContentHeight != h) { 1765 // record new dimensions 1766 mContentWidth = w; 1767 mContentHeight = h; 1768 // If history Picture is drawn, don't update scroll. They will be 1769 // updated when we get out of that mode. 1770 if (!mDrawHistory) { 1771 // repin our scroll, taking into account the new content size 1772 int oldX = mScrollX; 1773 int oldY = mScrollY; 1774 mScrollX = pinLocX(mScrollX); 1775 mScrollY = pinLocY(mScrollY); 1776 // android.util.Log.d("skia", "recordNewContentSize - 1777 // abortAnimation"); 1778 mScroller.abortAnimation(); // just in case 1779 if (oldX != mScrollX || oldY != mScrollY) { 1780 sendOurVisibleRect(); 1781 } 1782 } 1783 } 1784 contentSizeChanged(updateLayout); 1785 } 1786 1787 private void setNewZoomScale(float scale, boolean force) { 1788 if (scale < mMinZoomScale) { 1789 scale = mMinZoomScale; 1790 } else if (scale > mMaxZoomScale) { 1791 scale = mMaxZoomScale; 1792 } 1793 if (scale != mActualScale || force) { 1794 if (mDrawHistory) { 1795 // If history Picture is drawn, don't update scroll. They will 1796 // be updated when we get out of that mode. 1797 if (scale != mActualScale && !mPreviewZoomOnly) { 1798 mCallbackProxy.onScaleChanged(mActualScale, scale); 1799 } 1800 mActualScale = scale; 1801 mInvActualScale = 1 / scale; 1802 if (!mPreviewZoomOnly) { 1803 sendViewSizeZoom(); 1804 } 1805 } else { 1806 // update our scroll so we don't appear to jump 1807 // i.e. keep the center of the doc in the center of the view 1808 1809 int oldX = mScrollX; 1810 int oldY = mScrollY; 1811 float ratio = scale * mInvActualScale; // old inverse 1812 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 1813 float sy = ratio * oldY + (ratio - 1) * mZoomCenterY; 1814 1815 // now update our new scale and inverse 1816 if (scale != mActualScale && !mPreviewZoomOnly) { 1817 mCallbackProxy.onScaleChanged(mActualScale, scale); 1818 } 1819 mActualScale = scale; 1820 mInvActualScale = 1 / scale; 1821 1822 // Scale all the child views 1823 mViewManager.scaleAll(); 1824 1825 // as we don't have animation for scaling, don't do animation 1826 // for scrolling, as it causes weird intermediate state 1827 // pinScrollTo(Math.round(sx), Math.round(sy)); 1828 mScrollX = pinLocX(Math.round(sx)); 1829 mScrollY = pinLocY(Math.round(sy)); 1830 1831 if (!mPreviewZoomOnly) { 1832 sendViewSizeZoom(); 1833 sendOurVisibleRect(); 1834 } 1835 } 1836 } 1837 } 1838 1839 // Used to avoid sending many visible rect messages. 1840 private Rect mLastVisibleRectSent; 1841 private Rect mLastGlobalRect; 1842 1843 private Rect sendOurVisibleRect() { 1844 Rect rect = new Rect(); 1845 calcOurContentVisibleRect(rect); 1846 // Rect.equals() checks for null input. 1847 if (!rect.equals(mLastVisibleRectSent)) { 1848 Point pos = new Point(rect.left, rect.top); 1849 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 1850 nativeMoveGeneration(), 0, pos); 1851 mLastVisibleRectSent = rect; 1852 } 1853 Rect globalRect = new Rect(); 1854 if (getGlobalVisibleRect(globalRect) 1855 && !globalRect.equals(mLastGlobalRect)) { 1856 if (DebugFlags.WEB_VIEW) { 1857 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 1858 + globalRect.top + ",r=" + globalRect.right + ",b=" 1859 + globalRect.bottom); 1860 } 1861 // TODO: the global offset is only used by windowRect() 1862 // in ChromeClientAndroid ; other clients such as touch 1863 // and mouse events could return view + screen relative points. 1864 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 1865 mLastGlobalRect = globalRect; 1866 } 1867 return rect; 1868 } 1869 1870 // Sets r to be the visible rectangle of our webview in view coordinates 1871 private void calcOurVisibleRect(Rect r) { 1872 Point p = new Point(); 1873 getGlobalVisibleRect(r, p); 1874 r.offset(-p.x, -p.y); 1875 if (mFindIsUp) { 1876 r.bottom -= FIND_HEIGHT; 1877 } 1878 } 1879 1880 // Sets r to be our visible rectangle in content coordinates 1881 private void calcOurContentVisibleRect(Rect r) { 1882 calcOurVisibleRect(r); 1883 r.left = viewToContent(r.left); 1884 r.top = viewToContent(r.top); 1885 r.right = viewToContent(r.right); 1886 r.bottom = viewToContent(r.bottom); 1887 } 1888 1889 static class ViewSizeData { 1890 int mWidth; 1891 int mHeight; 1892 int mTextWrapWidth; 1893 float mScale; 1894 } 1895 1896 /** 1897 * Compute unzoomed width and height, and if they differ from the last 1898 * values we sent, send them to webkit (to be used has new viewport) 1899 * 1900 * @return true if new values were sent 1901 */ 1902 private boolean sendViewSizeZoom() { 1903 int viewWidth = getViewWidth(); 1904 int newWidth = Math.round(viewWidth * mInvActualScale); 1905 int newHeight = Math.round(getViewHeight() * mInvActualScale); 1906 /* 1907 * Because the native side may have already done a layout before the 1908 * View system was able to measure us, we have to send a height of 0 to 1909 * remove excess whitespace when we grow our width. This will trigger a 1910 * layout and a change in content size. This content size change will 1911 * mean that contentSizeChanged will either call this method directly or 1912 * indirectly from onSizeChanged. 1913 */ 1914 if (newWidth > mLastWidthSent && mWrapContent) { 1915 newHeight = 0; 1916 } 1917 // Avoid sending another message if the dimensions have not changed. 1918 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 1919 ViewSizeData data = new ViewSizeData(); 1920 data.mWidth = newWidth; 1921 data.mHeight = newHeight; 1922 // while in zoom overview mode, the text are wrapped to the screen 1923 // width matching mLastScale. So that we don't trigger re-flow while 1924 // toggling between overview mode and normal mode. 1925 data.mTextWrapWidth = mInZoomOverview ? Math.round(viewWidth 1926 / mLastScale) : newWidth; 1927 data.mScale = mActualScale; 1928 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 1929 mLastWidthSent = newWidth; 1930 mLastHeightSent = newHeight; 1931 return true; 1932 } 1933 return false; 1934 } 1935 1936 @Override 1937 protected int computeHorizontalScrollRange() { 1938 if (mDrawHistory) { 1939 return mHistoryWidth; 1940 } else { 1941 return contentToView(mContentWidth); 1942 } 1943 } 1944 1945 // Make sure this stays in sync with the actual height of the FindDialog. 1946 private static final int FIND_HEIGHT = 79; 1947 1948 @Override 1949 protected int computeVerticalScrollRange() { 1950 if (mDrawHistory) { 1951 return mHistoryHeight; 1952 } else { 1953 int height = contentToView(mContentHeight); 1954 if (mFindIsUp) { 1955 height += FIND_HEIGHT; 1956 } 1957 return height; 1958 } 1959 } 1960 1961 /** 1962 * Get the url for the current page. This is not always the same as the url 1963 * passed to WebViewClient.onPageStarted because although the load for 1964 * that url has begun, the current page may not have changed. 1965 * @return The url for the current page. 1966 */ 1967 public String getUrl() { 1968 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1969 return h != null ? h.getUrl() : null; 1970 } 1971 1972 /** 1973 * Get the original url for the current page. This is not always the same 1974 * as the url passed to WebViewClient.onPageStarted because although the 1975 * load for that url has begun, the current page may not have changed. 1976 * Also, there may have been redirects resulting in a different url to that 1977 * originally requested. 1978 * @return The url that was originally requested for the current page. 1979 */ 1980 public String getOriginalUrl() { 1981 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1982 return h != null ? h.getOriginalUrl() : null; 1983 } 1984 1985 /** 1986 * Get the title for the current page. This is the title of the current page 1987 * until WebViewClient.onReceivedTitle is called. 1988 * @return The title for the current page. 1989 */ 1990 public String getTitle() { 1991 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1992 return h != null ? h.getTitle() : null; 1993 } 1994 1995 /** 1996 * Get the favicon for the current page. This is the favicon of the current 1997 * page until WebViewClient.onReceivedIcon is called. 1998 * @return The favicon for the current page. 1999 */ 2000 public Bitmap getFavicon() { 2001 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2002 return h != null ? h.getFavicon() : null; 2003 } 2004 2005 /** 2006 * Get the touch icon url for the apple-touch-icon <link> element. 2007 * @hide 2008 */ 2009 public String getTouchIconUrl() { 2010 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2011 return h != null ? h.getTouchIconUrl() : null; 2012 } 2013 2014 /** 2015 * Get the progress for the current page. 2016 * @return The progress for the current page between 0 and 100. 2017 */ 2018 public int getProgress() { 2019 return mCallbackProxy.getProgress(); 2020 } 2021 2022 /** 2023 * @return the height of the HTML content. 2024 */ 2025 public int getContentHeight() { 2026 return mContentHeight; 2027 } 2028 2029 /** 2030 * Pause all layout, parsing, and javascript timers for all webviews. This 2031 * is a global requests, not restricted to just this webview. This can be 2032 * useful if the application has been paused. 2033 */ 2034 public void pauseTimers() { 2035 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2036 } 2037 2038 /** 2039 * Resume all layout, parsing, and javascript timers for all webviews. 2040 * This will resume dispatching all timers. 2041 */ 2042 public void resumeTimers() { 2043 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2044 } 2045 2046 /** 2047 * Call this to pause any extra processing associated with this view and 2048 * its associated DOM/plugins/javascript/etc. For example, if the view is 2049 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2050 * network traffic. When the view is again "active", call onResume(). 2051 * 2052 * Note that this differs from pauseTimers(), which affects all views/DOMs 2053 * @hide 2054 */ 2055 public void onPause() { 2056 if (!mIsPaused) { 2057 mIsPaused = true; 2058 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2059 } 2060 } 2061 2062 /** 2063 * Call this to balanace a previous call to onPause() 2064 * @hide 2065 */ 2066 public void onResume() { 2067 if (mIsPaused) { 2068 mIsPaused = false; 2069 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2070 } 2071 } 2072 2073 /** 2074 * Returns true if the view is paused, meaning onPause() was called. Calling 2075 * onResume() sets the paused state back to false. 2076 * @hide 2077 */ 2078 public boolean isPaused() { 2079 return mIsPaused; 2080 } 2081 2082 /** 2083 * Call this to inform the view that memory is low so that it can 2084 * free any available memory. 2085 * @hide 2086 */ 2087 public void freeMemory() { 2088 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2089 } 2090 2091 /** 2092 * Clear the resource cache. Note that the cache is per-application, so 2093 * this will clear the cache for all WebViews used. 2094 * 2095 * @param includeDiskFiles If false, only the RAM cache is cleared. 2096 */ 2097 public void clearCache(boolean includeDiskFiles) { 2098 // Note: this really needs to be a static method as it clears cache for all 2099 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2100 // we can't make this static. 2101 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2102 includeDiskFiles ? 1 : 0, 0); 2103 } 2104 2105 /** 2106 * Make sure that clearing the form data removes the adapter from the 2107 * currently focused textfield if there is one. 2108 */ 2109 public void clearFormData() { 2110 if (inEditingMode()) { 2111 AutoCompleteAdapter adapter = null; 2112 mWebTextView.setAdapterCustom(adapter); 2113 } 2114 } 2115 2116 /** 2117 * Tell the WebView to clear its internal back/forward list. 2118 */ 2119 public void clearHistory() { 2120 mCallbackProxy.getBackForwardList().setClearPending(); 2121 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2122 } 2123 2124 /** 2125 * Clear the SSL preferences table stored in response to proceeding with SSL 2126 * certificate errors. 2127 */ 2128 public void clearSslPreferences() { 2129 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2130 } 2131 2132 /** 2133 * Return the WebBackForwardList for this WebView. This contains the 2134 * back/forward list for use in querying each item in the history stack. 2135 * This is a copy of the private WebBackForwardList so it contains only a 2136 * snapshot of the current state. Multiple calls to this method may return 2137 * different objects. The object returned from this method will not be 2138 * updated to reflect any new state. 2139 */ 2140 public WebBackForwardList copyBackForwardList() { 2141 return mCallbackProxy.getBackForwardList().clone(); 2142 } 2143 2144 /* 2145 * Highlight and scroll to the next occurance of String in findAll. 2146 * Wraps the page infinitely, and scrolls. Must be called after 2147 * calling findAll. 2148 * 2149 * @param forward Direction to search. 2150 */ 2151 public void findNext(boolean forward) { 2152 nativeFindNext(forward); 2153 } 2154 2155 /* 2156 * Find all instances of find on the page and highlight them. 2157 * @param find String to find. 2158 * @return int The number of occurances of the String "find" 2159 * that were found. 2160 */ 2161 public int findAll(String find) { 2162 mFindIsUp = true; 2163 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2164 invalidate(); 2165 return result; 2166 } 2167 2168 // Used to know whether the find dialog is open. Affects whether 2169 // or not we draw the highlights for matches. 2170 private boolean mFindIsUp; 2171 2172 /** 2173 * Return the first substring consisting of the address of a physical 2174 * location. Currently, only addresses in the United States are detected, 2175 * and consist of: 2176 * - a house number 2177 * - a street name 2178 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2179 * - a city name 2180 * - a state or territory, either spelled out or two-letter abbr. 2181 * - an optional 5 digit or 9 digit zip code. 2182 * 2183 * All names must be correctly capitalized, and the zip code, if present, 2184 * must be valid for the state. The street type must be a standard USPS 2185 * spelling or abbreviation. The state or territory must also be spelled 2186 * or abbreviated using USPS standards. The house number may not exceed 2187 * five digits. 2188 * @param addr The string to search for addresses. 2189 * 2190 * @return the address, or if no address is found, return null. 2191 */ 2192 public static String findAddress(String addr) { 2193 return findAddress(addr, false); 2194 } 2195 2196 /** 2197 * @hide 2198 * Return the first substring consisting of the address of a physical 2199 * location. Currently, only addresses in the United States are detected, 2200 * and consist of: 2201 * - a house number 2202 * - a street name 2203 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2204 * - a city name 2205 * - a state or territory, either spelled out or two-letter abbr. 2206 * - an optional 5 digit or 9 digit zip code. 2207 * 2208 * Names are optionally capitalized, and the zip code, if present, 2209 * must be valid for the state. The street type must be a standard USPS 2210 * spelling or abbreviation. The state or territory must also be spelled 2211 * or abbreviated using USPS standards. The house number may not exceed 2212 * five digits. 2213 * @param addr The string to search for addresses. 2214 * @param caseInsensitive addr Set to true to make search ignore case. 2215 * 2216 * @return the address, or if no address is found, return null. 2217 */ 2218 public static String findAddress(String addr, boolean caseInsensitive) { 2219 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2220 } 2221 2222 /* 2223 * Clear the highlighting surrounding text matches created by findAll. 2224 */ 2225 public void clearMatches() { 2226 mFindIsUp = false; 2227 nativeSetFindIsDown(); 2228 // Now that the dialog has been removed, ensure that we scroll to a 2229 // location that is not beyond the end of the page. 2230 pinScrollTo(mScrollX, mScrollY, false, 0); 2231 invalidate(); 2232 } 2233 2234 /** 2235 * Query the document to see if it contains any image references. The 2236 * message object will be dispatched with arg1 being set to 1 if images 2237 * were found and 0 if the document does not reference any images. 2238 * @param response The message that will be dispatched with the result. 2239 */ 2240 public void documentHasImages(Message response) { 2241 if (response == null) { 2242 return; 2243 } 2244 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2245 } 2246 2247 @Override 2248 public void computeScroll() { 2249 if (mScroller.computeScrollOffset()) { 2250 int oldX = mScrollX; 2251 int oldY = mScrollY; 2252 mScrollX = mScroller.getCurrX(); 2253 mScrollY = mScroller.getCurrY(); 2254 postInvalidate(); // So we draw again 2255 if (oldX != mScrollX || oldY != mScrollY) { 2256 // as onScrollChanged() is not called, sendOurVisibleRect() 2257 // needs to be call explicitly 2258 sendOurVisibleRect(); 2259 } 2260 } else { 2261 super.computeScroll(); 2262 } 2263 } 2264 2265 private static int computeDuration(int dx, int dy) { 2266 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2267 int duration = distance * 1000 / STD_SPEED; 2268 return Math.min(duration, MAX_DURATION); 2269 } 2270 2271 // helper to pin the scrollBy parameters (already in view coordinates) 2272 // returns true if the scroll was changed 2273 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2274 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2275 } 2276 2277 // helper to pin the scrollTo parameters (already in view coordinates) 2278 // returns true if the scroll was changed 2279 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2280 x = pinLocX(x); 2281 y = pinLocY(y); 2282 int dx = x - mScrollX; 2283 int dy = y - mScrollY; 2284 2285 if ((dx | dy) == 0) { 2286 return false; 2287 } 2288 2289 if (true && animate) { 2290 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2291 2292 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2293 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2294 invalidate(); 2295 } else { 2296 mScroller.abortAnimation(); // just in case 2297 scrollTo(x, y); 2298 } 2299 return true; 2300 } 2301 2302 // Scale from content to view coordinates, and pin. 2303 // Also called by jni webview.cpp 2304 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2305 if (mDrawHistory) { 2306 // disallow WebView to change the scroll position as History Picture 2307 // is used in the view system. 2308 // TODO: as we switchOutDrawHistory when trackball or navigation 2309 // keys are hit, this should be safe. Right? 2310 return false; 2311 } 2312 cx = contentToView(cx); 2313 cy = contentToView(cy); 2314 if (mHeightCanMeasure) { 2315 // move our visible rect according to scroll request 2316 if (cy != 0) { 2317 Rect tempRect = new Rect(); 2318 calcOurVisibleRect(tempRect); 2319 tempRect.offset(cx, cy); 2320 requestRectangleOnScreen(tempRect); 2321 } 2322 // FIXME: We scroll horizontally no matter what because currently 2323 // ScrollView and ListView will not scroll horizontally. 2324 // FIXME: Why do we only scroll horizontally if there is no 2325 // vertical scroll? 2326// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2327 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2328 } else { 2329 return pinScrollBy(cx, cy, animate, 0); 2330 } 2331 } 2332 2333 // scale from content to view coordinates, and pin 2334 // return true if pin caused the final x/y different than the request cx/cy; 2335 // return false if the view scroll to the exact position as it is requested. 2336 private boolean setContentScrollTo(int cx, int cy) { 2337 if (mDrawHistory) { 2338 // disallow WebView to change the scroll position as History Picture 2339 // is used in the view system. 2340 // One known case where this is called is that WebCore tries to 2341 // restore the scroll position. As history Picture already uses the 2342 // saved scroll position, it is ok to skip this. 2343 return false; 2344 } 2345 int vx = contentToView(cx); 2346 int vy = contentToView(cy); 2347// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2348// vx + " " + vy + "]"); 2349 pinScrollTo(vx, vy, false, 0); 2350 if (mScrollX != vx || mScrollY != vy) { 2351 return true; 2352 } else { 2353 return false; 2354 } 2355 } 2356 2357 // scale from content to view coordinates, and pin 2358 private void spawnContentScrollTo(int cx, int cy) { 2359 if (mDrawHistory) { 2360 // disallow WebView to change the scroll position as History Picture 2361 // is used in the view system. 2362 return; 2363 } 2364 int vx = contentToView(cx); 2365 int vy = contentToView(cy); 2366 pinScrollTo(vx, vy, true, 0); 2367 } 2368 2369 /** 2370 * These are from webkit, and are in content coordinate system (unzoomed) 2371 */ 2372 private void contentSizeChanged(boolean updateLayout) { 2373 // suppress 0,0 since we usually see real dimensions soon after 2374 // this avoids drawing the prev content in a funny place. If we find a 2375 // way to consolidate these notifications, this check may become 2376 // obsolete 2377 if ((mContentWidth | mContentHeight) == 0) { 2378 return; 2379 } 2380 2381 if (mHeightCanMeasure) { 2382 if (getMeasuredHeight() != contentToView(mContentHeight) 2383 && updateLayout) { 2384 requestLayout(); 2385 } 2386 } else if (mWidthCanMeasure) { 2387 if (getMeasuredWidth() != contentToView(mContentWidth) 2388 && updateLayout) { 2389 requestLayout(); 2390 } 2391 } else { 2392 // If we don't request a layout, try to send our view size to the 2393 // native side to ensure that WebCore has the correct dimensions. 2394 sendViewSizeZoom(); 2395 } 2396 } 2397 2398 /** 2399 * Set the WebViewClient that will receive various notifications and 2400 * requests. This will replace the current handler. 2401 * @param client An implementation of WebViewClient. 2402 */ 2403 public void setWebViewClient(WebViewClient client) { 2404 mCallbackProxy.setWebViewClient(client); 2405 } 2406 2407 /** 2408 * Register the interface to be used when content can not be handled by 2409 * the rendering engine, and should be downloaded instead. This will replace 2410 * the current handler. 2411 * @param listener An implementation of DownloadListener. 2412 */ 2413 public void setDownloadListener(DownloadListener listener) { 2414 mCallbackProxy.setDownloadListener(listener); 2415 } 2416 2417 /** 2418 * Set the chrome handler. This is an implementation of WebChromeClient for 2419 * use in handling Javascript dialogs, favicons, titles, and the progress. 2420 * This will replace the current handler. 2421 * @param client An implementation of WebChromeClient. 2422 */ 2423 public void setWebChromeClient(WebChromeClient client) { 2424 mCallbackProxy.setWebChromeClient(client); 2425 } 2426 2427 /** 2428 * Gets the chrome handler. 2429 * @return the current WebChromeClient instance. 2430 * 2431 * @hide API council approval. 2432 */ 2433 public WebChromeClient getWebChromeClient() { 2434 return mCallbackProxy.getWebChromeClient(); 2435 } 2436 2437 /** 2438 * Set the Picture listener. This is an interface used to receive 2439 * notifications of a new Picture. 2440 * @param listener An implementation of WebView.PictureListener. 2441 */ 2442 public void setPictureListener(PictureListener listener) { 2443 mPictureListener = listener; 2444 } 2445 2446 /** 2447 * {@hide} 2448 */ 2449 /* FIXME: Debug only! Remove for SDK! */ 2450 public void externalRepresentation(Message callback) { 2451 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2452 } 2453 2454 /** 2455 * {@hide} 2456 */ 2457 /* FIXME: Debug only! Remove for SDK! */ 2458 public void documentAsText(Message callback) { 2459 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2460 } 2461 2462 /** 2463 * Use this function to bind an object to Javascript so that the 2464 * methods can be accessed from Javascript. 2465 * <p><strong>IMPORTANT:</strong> 2466 * <ul> 2467 * <li> Using addJavascriptInterface() allows JavaScript to control your 2468 * application. This can be a very useful feature or a dangerous security 2469 * issue. When the HTML in the WebView is untrustworthy (for example, part 2470 * or all of the HTML is provided by some person or process), then an 2471 * attacker could inject HTML that will execute your code and possibly any 2472 * code of the attacker's choosing.<br> 2473 * Do not use addJavascriptInterface() unless all of the HTML in this 2474 * WebView was written by you.</li> 2475 * <li> The Java object that is bound runs in another thread and not in 2476 * the thread that it was constructed in.</li> 2477 * </ul></p> 2478 * @param obj The class instance to bind to Javascript 2479 * @param interfaceName The name to used to expose the class in Javascript 2480 */ 2481 public void addJavascriptInterface(Object obj, String interfaceName) { 2482 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2483 arg.mObject = obj; 2484 arg.mInterfaceName = interfaceName; 2485 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2486 } 2487 2488 /** 2489 * Return the WebSettings object used to control the settings for this 2490 * WebView. 2491 * @return A WebSettings object that can be used to control this WebView's 2492 * settings. 2493 */ 2494 public WebSettings getSettings() { 2495 return mWebViewCore.getSettings(); 2496 } 2497 2498 /** 2499 * Return the list of currently loaded plugins. 2500 * @return The list of currently loaded plugins. 2501 */ 2502 public static synchronized PluginList getPluginList() { 2503 if (sPluginList == null) { 2504 sPluginList = new PluginList(); 2505 } 2506 return sPluginList; 2507 } 2508 2509 /** 2510 * TODO: need to add @Deprecated 2511 */ 2512 public void refreshPlugins(boolean reloadOpenPages) { 2513 PluginManager.getInstance(mContext).refreshPlugins(reloadOpenPages); 2514 } 2515 2516 //------------------------------------------------------------------------- 2517 // Override View methods 2518 //------------------------------------------------------------------------- 2519 2520 @Override 2521 protected void finalize() throws Throwable { 2522 destroy(); 2523 } 2524 2525 @Override 2526 protected void onDraw(Canvas canvas) { 2527 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2528 if (mNativeClass == 0) { 2529 return; 2530 } 2531 if (mWebViewCore.mEndScaleZoom) { 2532 mWebViewCore.mEndScaleZoom = false; 2533 if (mTouchMode >= FIRST_SCROLL_ZOOM 2534 && mTouchMode <= LAST_SCROLL_ZOOM) { 2535 setHorizontalScrollBarEnabled(true); 2536 setVerticalScrollBarEnabled(true); 2537 mTouchMode = TOUCH_DONE_MODE; 2538 } 2539 } 2540 int sc = canvas.save(); 2541 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 2542 scrollZoomDraw(canvas); 2543 } else { 2544 // Update the buttons in the picture, so when we draw the picture 2545 // to the screen, they are in the correct state. 2546 // Tell the native side if user is a) touching the screen, 2547 // b) pressing the trackball down, or c) pressing the enter key 2548 // If the cursor is on a button, we need to draw it in the pressed 2549 // state. 2550 // If mNativeClass is 0, we should not reach here, so we do not 2551 // need to check it again. 2552 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2553 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2554 || mTrackballDown || mGotCenterDown, false); 2555 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2556 } 2557 canvas.restoreToCount(sc); 2558 2559 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2560 invalidate(); 2561 } 2562 } 2563 2564 @Override 2565 public void setLayoutParams(ViewGroup.LayoutParams params) { 2566 if (params.height == LayoutParams.WRAP_CONTENT) { 2567 mWrapContent = true; 2568 } 2569 super.setLayoutParams(params); 2570 } 2571 2572 @Override 2573 public boolean performLongClick() { 2574 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 2575 // Send the click so that the textfield is in focus 2576 // FIXME: When we start respecting changes to the native textfield's 2577 // selection, need to make sure that this does not change it. 2578 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 2579 nativeCursorNodePointer()); 2580 rebuildWebTextView(); 2581 } 2582 if (inEditingMode()) { 2583 return mWebTextView.performLongClick(); 2584 } else { 2585 return super.performLongClick(); 2586 } 2587 } 2588 2589 private void drawCoreAndCursorRing(Canvas canvas, int color, 2590 boolean drawCursorRing) { 2591 if (mDrawHistory) { 2592 canvas.scale(mActualScale, mActualScale); 2593 canvas.drawPicture(mHistoryPicture); 2594 return; 2595 } 2596 2597 boolean animateZoom = mZoomScale != 0; 2598 boolean animateScroll = !mScroller.isFinished() 2599 || mVelocityTracker != null; 2600 if (animateZoom) { 2601 float zoomScale; 2602 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 2603 if (interval < ZOOM_ANIMATION_LENGTH) { 2604 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 2605 zoomScale = 1.0f / (mInvInitialZoomScale 2606 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 2607 invalidate(); 2608 } else { 2609 zoomScale = mZoomScale; 2610 // set mZoomScale to be 0 as we have done animation 2611 mZoomScale = 0; 2612 } 2613 float scale = zoomScale * mInvInitialZoomScale; 2614 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 2615 - mZoomCenterX); 2616 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 2617 * zoomScale)) + mScrollX; 2618 int ty = Math.round(scale * (mInitialScrollY + mZoomCenterY) 2619 - mZoomCenterY); 2620 ty = -pinLoc(ty, getViewHeight(), Math.round(mContentHeight 2621 * zoomScale)) + mScrollY; 2622 canvas.translate(tx, ty); 2623 canvas.scale(zoomScale, zoomScale); 2624 } else { 2625 canvas.scale(mActualScale, mActualScale); 2626 } 2627 2628 mWebViewCore.drawContentPicture(canvas, color, animateZoom, 2629 animateScroll); 2630 2631 if (mNativeClass == 0) return; 2632 if (mShiftIsPressed) { 2633 if (mTouchSelection) { 2634 nativeDrawSelectionRegion(canvas); 2635 } else { 2636 nativeDrawSelection(canvas, mSelectX, mSelectY, 2637 mExtendSelection); 2638 } 2639 } else if (drawCursorRing) { 2640 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 2641 mTouchMode = TOUCH_SHORTPRESS_MODE; 2642 HitTestResult hitTest = getHitTestResult(); 2643 if (hitTest != null && 2644 hitTest.mType != HitTestResult.UNKNOWN_TYPE) { 2645 mPrivateHandler.sendMessageDelayed(mPrivateHandler 2646 .obtainMessage(SWITCH_TO_LONGPRESS), 2647 LONG_PRESS_TIMEOUT); 2648 } 2649 } 2650 nativeDrawCursorRing(canvas); 2651 } 2652 // When the FindDialog is up, only draw the matches if we are not in 2653 // the process of scrolling them into view. 2654 if (mFindIsUp && !animateScroll) { 2655 nativeDrawMatches(canvas); 2656 } 2657 } 2658 2659 private float scrollZoomGridScale(float invScale) { 2660 float griddedInvScale = (int) (invScale * SCROLL_ZOOM_GRID) 2661 / (float) SCROLL_ZOOM_GRID; 2662 return 1.0f / griddedInvScale; 2663 } 2664 2665 private float scrollZoomX(float scale) { 2666 int width = getViewWidth(); 2667 float maxScrollZoomX = mContentWidth * scale - width; 2668 int maxX = mContentWidth - width; 2669 return -(maxScrollZoomX > 0 ? mZoomScrollX * maxScrollZoomX / maxX 2670 : maxScrollZoomX / 2); 2671 } 2672 2673 private float scrollZoomY(float scale) { 2674 int height = getViewHeight(); 2675 float maxScrollZoomY = mContentHeight * scale - height; 2676 int maxY = mContentHeight - height; 2677 return -(maxScrollZoomY > 0 ? mZoomScrollY * maxScrollZoomY / maxY 2678 : maxScrollZoomY / 2); 2679 } 2680 2681 private void drawMagnifyFrame(Canvas canvas, Rect frame, Paint paint) { 2682 final float ADORNMENT_LEN = 16.0f; 2683 float width = frame.width(); 2684 float height = frame.height(); 2685 Path path = new Path(); 2686 path.moveTo(-ADORNMENT_LEN, -ADORNMENT_LEN); 2687 path.lineTo(0, 0); 2688 path.lineTo(width, 0); 2689 path.lineTo(width + ADORNMENT_LEN, -ADORNMENT_LEN); 2690 path.moveTo(-ADORNMENT_LEN, height + ADORNMENT_LEN); 2691 path.lineTo(0, height); 2692 path.lineTo(width, height); 2693 path.lineTo(width + ADORNMENT_LEN, height + ADORNMENT_LEN); 2694 path.moveTo(0, 0); 2695 path.lineTo(0, height); 2696 path.moveTo(width, 0); 2697 path.lineTo(width, height); 2698 path.offset(frame.left, frame.top); 2699 canvas.drawPath(path, paint); 2700 } 2701 2702 // Returns frame surrounding magified portion of screen while 2703 // scroll-zoom is enabled. The frame is also used to center the 2704 // zoom-in zoom-out points at the start and end of the animation. 2705 private Rect scrollZoomFrame(int width, int height, float halfScale) { 2706 Rect scrollFrame = new Rect(); 2707 scrollFrame.set(mZoomScrollX, mZoomScrollY, 2708 mZoomScrollX + width, mZoomScrollY + height); 2709 if (mContentWidth * mZoomScrollLimit < width) { 2710 float scale = zoomFrameScaleX(width, halfScale, 1.0f); 2711 float offsetX = (width * scale - width) * 0.5f; 2712 scrollFrame.left -= offsetX; 2713 scrollFrame.right += offsetX; 2714 } 2715 if (mContentHeight * mZoomScrollLimit < height) { 2716 float scale = zoomFrameScaleY(height, halfScale, 1.0f); 2717 float offsetY = (height * scale - height) * 0.5f; 2718 scrollFrame.top -= offsetY; 2719 scrollFrame.bottom += offsetY; 2720 } 2721 return scrollFrame; 2722 } 2723 2724 private float zoomFrameScaleX(int width, float halfScale, float noScale) { 2725 // mContentWidth > width > mContentWidth * mZoomScrollLimit 2726 if (mContentWidth <= width) { 2727 return halfScale; 2728 } 2729 float part = (width - mContentWidth * mZoomScrollLimit) 2730 / (width * (1 - mZoomScrollLimit)); 2731 return halfScale * part + noScale * (1.0f - part); 2732 } 2733 2734 private float zoomFrameScaleY(int height, float halfScale, float noScale) { 2735 if (mContentHeight <= height) { 2736 return halfScale; 2737 } 2738 float part = (height - mContentHeight * mZoomScrollLimit) 2739 / (height * (1 - mZoomScrollLimit)); 2740 return halfScale * part + noScale * (1.0f - part); 2741 } 2742 2743 private float scrollZoomMagScale(float invScale) { 2744 return (invScale * 2 + mInvActualScale) / 3; 2745 } 2746 2747 private void scrollZoomDraw(Canvas canvas) { 2748 float invScale = mZoomScrollInvLimit; 2749 int elapsed = 0; 2750 if (mTouchMode != SCROLL_ZOOM_OUT) { 2751 elapsed = (int) Math.min(System.currentTimeMillis() 2752 - mZoomScrollStart, SCROLL_ZOOM_DURATION); 2753 float transitionScale = (mZoomScrollInvLimit - mInvActualScale) 2754 * elapsed / SCROLL_ZOOM_DURATION; 2755 if (mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 2756 invScale = mInvActualScale + transitionScale; 2757 } else { /* if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) */ 2758 invScale = mZoomScrollInvLimit - transitionScale; 2759 } 2760 } 2761 float scale = scrollZoomGridScale(invScale); 2762 invScale = 1.0f / scale; 2763 int width = getViewWidth(); 2764 int height = getViewHeight(); 2765 float halfScale = scrollZoomMagScale(invScale); 2766 Rect scrollFrame = scrollZoomFrame(width, height, halfScale); 2767 if (elapsed == SCROLL_ZOOM_DURATION) { 2768 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 2769 setHorizontalScrollBarEnabled(true); 2770 setVerticalScrollBarEnabled(true); 2771 rebuildWebTextView(); 2772 scrollTo((int) (scrollFrame.centerX() * mActualScale) 2773 - (width >> 1), (int) (scrollFrame.centerY() 2774 * mActualScale) - (height >> 1)); 2775 mTouchMode = TOUCH_DONE_MODE; 2776 // Show all the child views once we are done. 2777 mViewManager.showAll(); 2778 } else { 2779 mTouchMode = SCROLL_ZOOM_OUT; 2780 } 2781 } 2782 float newX = scrollZoomX(scale); 2783 float newY = scrollZoomY(scale); 2784 if (DebugFlags.WEB_VIEW) { 2785 Log.v(LOGTAG, "scrollZoomDraw scale=" + scale + " + (" + newX 2786 + ", " + newY + ") mZoomScroll=(" + mZoomScrollX + ", " 2787 + mZoomScrollY + ")" + " invScale=" + invScale + " scale=" 2788 + scale); 2789 } 2790 canvas.translate(newX, newY); 2791 canvas.scale(scale, scale); 2792 boolean animating = mTouchMode != SCROLL_ZOOM_OUT; 2793 if (mDrawHistory) { 2794 int sc = canvas.save(Canvas.CLIP_SAVE_FLAG); 2795 Rect clip = new Rect(0, 0, mHistoryPicture.getWidth(), 2796 mHistoryPicture.getHeight()); 2797 canvas.clipRect(clip, Region.Op.DIFFERENCE); 2798 canvas.drawColor(mBackgroundColor); 2799 canvas.restoreToCount(sc); 2800 canvas.drawPicture(mHistoryPicture); 2801 } else { 2802 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2803 animating, true); 2804 } 2805 if (mTouchMode == TOUCH_DONE_MODE) { 2806 return; 2807 } 2808 Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); 2809 paint.setStyle(Paint.Style.STROKE); 2810 paint.setStrokeWidth(30.0f); 2811 paint.setARGB(0x50, 0, 0, 0); 2812 int maxX = mContentWidth - width; 2813 int maxY = mContentHeight - height; 2814 if (true) { // experiment: draw hint to place finger off magnify area 2815 drawMagnifyFrame(canvas, scrollFrame, paint); 2816 } else { 2817 canvas.drawRect(scrollFrame, paint); 2818 } 2819 int sc = canvas.save(); 2820 canvas.clipRect(scrollFrame); 2821 float halfX = (float) mZoomScrollX / maxX; 2822 if (mContentWidth * mZoomScrollLimit < width) { 2823 halfX = zoomFrameScaleX(width, 0.5f, halfX); 2824 } 2825 float halfY = (float) mZoomScrollY / maxY; 2826 if (mContentHeight * mZoomScrollLimit < height) { 2827 halfY = zoomFrameScaleY(height, 0.5f, halfY); 2828 } 2829 canvas.scale(halfScale, halfScale, mZoomScrollX + width * halfX 2830 , mZoomScrollY + height * halfY); 2831 if (DebugFlags.WEB_VIEW) { 2832 Log.v(LOGTAG, "scrollZoomDraw halfScale=" + halfScale + " w/h=(" 2833 + width + ", " + height + ") half=(" + halfX + ", " 2834 + halfY + ")"); 2835 } 2836 if (mDrawHistory) { 2837 canvas.drawPicture(mHistoryPicture); 2838 } else { 2839 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2840 animating, false); 2841 } 2842 canvas.restoreToCount(sc); 2843 if (mTouchMode != SCROLL_ZOOM_OUT) { 2844 invalidate(); 2845 } 2846 } 2847 2848 private void zoomScrollTap(float x, float y) { 2849 float scale = scrollZoomGridScale(mZoomScrollInvLimit); 2850 float left = scrollZoomX(scale); 2851 float top = scrollZoomY(scale); 2852 int width = getViewWidth(); 2853 int height = getViewHeight(); 2854 x -= width * scale / 2; 2855 y -= height * scale / 2; 2856 mZoomScrollX = Math.min(mContentWidth - width 2857 , Math.max(0, (int) ((x - left) / scale))); 2858 mZoomScrollY = Math.min(mContentHeight - height 2859 , Math.max(0, (int) ((y - top) / scale))); 2860 if (DebugFlags.WEB_VIEW) { 2861 Log.v(LOGTAG, "zoomScrollTap scale=" + scale + " + (" + left 2862 + ", " + top + ") mZoomScroll=(" + mZoomScrollX + ", " 2863 + mZoomScrollY + ")" + " x=" + x + " y=" + y); 2864 } 2865 } 2866 2867 /** 2868 * @hide 2869 */ 2870 public boolean canZoomScrollOut() { 2871 if (mContentWidth == 0 || mContentHeight == 0) { 2872 return false; 2873 } 2874 int width = getViewWidth(); 2875 int height = getViewHeight(); 2876 float x = (float) width / (float) mContentWidth; 2877 float y = (float) height / (float) mContentHeight; 2878 mZoomScrollLimit = Math.max(DEFAULT_MIN_ZOOM_SCALE, Math.min(x, y)); 2879 mZoomScrollInvLimit = 1.0f / mZoomScrollLimit; 2880 if (DebugFlags.WEB_VIEW) { 2881 Log.v(LOGTAG, "canZoomScrollOut" 2882 + " mInvActualScale=" + mInvActualScale 2883 + " mZoomScrollLimit=" + mZoomScrollLimit 2884 + " mZoomScrollInvLimit=" + mZoomScrollInvLimit 2885 + " mContentWidth=" + mContentWidth 2886 + " mContentHeight=" + mContentHeight 2887 ); 2888 } 2889 // don't zoom out unless magnify area is at least half as wide 2890 // or tall as content 2891 float limit = mZoomScrollLimit * 2; 2892 return mContentWidth >= width * limit 2893 || mContentHeight >= height * limit; 2894 } 2895 2896 private void startZoomScrollOut() { 2897 setHorizontalScrollBarEnabled(false); 2898 setVerticalScrollBarEnabled(false); 2899 if (getSettings().getBuiltInZoomControls()) { 2900 if (mZoomButtonsController.isVisible()) { 2901 mZoomButtonsController.setVisible(false); 2902 } 2903 } else { 2904 if (mZoomControlRunnable != null) { 2905 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 2906 } 2907 if (mZoomControls != null) { 2908 mZoomControls.hide(); 2909 } 2910 } 2911 int width = getViewWidth(); 2912 int height = getViewHeight(); 2913 int halfW = width >> 1; 2914 mLastTouchX = halfW; 2915 int halfH = height >> 1; 2916 mLastTouchY = halfH; 2917 mScroller.abortAnimation(); 2918 mZoomScrollStart = System.currentTimeMillis(); 2919 Rect zoomFrame = scrollZoomFrame(width, height 2920 , scrollZoomMagScale(mZoomScrollInvLimit)); 2921 mZoomScrollX = Math.max(0, (int) ((mScrollX + halfW) * mInvActualScale) 2922 - (zoomFrame.width() >> 1)); 2923 mZoomScrollY = Math.max(0, (int) ((mScrollY + halfH) * mInvActualScale) 2924 - (zoomFrame.height() >> 1)); 2925 scrollTo(0, 0); // triggers inval, starts animation 2926 clearTextEntry(); 2927 if (DebugFlags.WEB_VIEW) { 2928 Log.v(LOGTAG, "startZoomScrollOut mZoomScroll=(" 2929 + mZoomScrollX + ", " + mZoomScrollY +")"); 2930 } 2931 } 2932 2933 /** 2934 * @hide 2935 */ 2936 public void zoomScrollOut() { 2937 if (canZoomScrollOut() == false) { 2938 mTouchMode = TOUCH_DONE_MODE; 2939 return; 2940 } 2941 // Hide the child views while in this mode. 2942 mViewManager.hideAll(); 2943 startZoomScrollOut(); 2944 mTouchMode = SCROLL_ZOOM_ANIMATION_OUT; 2945 invalidate(); 2946 } 2947 2948 private void moveZoomScrollWindow(float x, float y) { 2949 if (Math.abs(x - mLastZoomScrollRawX) < 1.5f 2950 && Math.abs(y - mLastZoomScrollRawY) < 1.5f) { 2951 return; 2952 } 2953 mLastZoomScrollRawX = x; 2954 mLastZoomScrollRawY = y; 2955 int oldX = mZoomScrollX; 2956 int oldY = mZoomScrollY; 2957 int width = getViewWidth(); 2958 int height = getViewHeight(); 2959 int maxZoomX = mContentWidth - width; 2960 if (maxZoomX > 0) { 2961 int maxScreenX = width - (int) Math.ceil(width 2962 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 2963 if (DebugFlags.WEB_VIEW) { 2964 Log.v(LOGTAG, "moveZoomScrollWindow-X" 2965 + " maxScreenX=" + maxScreenX + " width=" + width 2966 + " mZoomScrollLimit=" + mZoomScrollLimit + " x=" + x); 2967 } 2968 x += maxScreenX * mLastScrollX / maxZoomX - mLastTouchX; 2969 x *= Math.max(maxZoomX / maxScreenX, mZoomScrollInvLimit); 2970 mZoomScrollX = Math.max(0, Math.min(maxZoomX, (int) x)); 2971 } 2972 int maxZoomY = mContentHeight - height; 2973 if (maxZoomY > 0) { 2974 int maxScreenY = height - (int) Math.ceil(height 2975 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 2976 if (DebugFlags.WEB_VIEW) { 2977 Log.v(LOGTAG, "moveZoomScrollWindow-Y" 2978 + " maxScreenY=" + maxScreenY + " height=" + height 2979 + " mZoomScrollLimit=" + mZoomScrollLimit + " y=" + y); 2980 } 2981 y += maxScreenY * mLastScrollY / maxZoomY - mLastTouchY; 2982 y *= Math.max(maxZoomY / maxScreenY, mZoomScrollInvLimit); 2983 mZoomScrollY = Math.max(0, Math.min(maxZoomY, (int) y)); 2984 } 2985 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 2986 invalidate(); 2987 } 2988 if (DebugFlags.WEB_VIEW) { 2989 Log.v(LOGTAG, "moveZoomScrollWindow" 2990 + " scrollTo=(" + mZoomScrollX + ", " + mZoomScrollY + ")" 2991 + " mLastTouch=(" + mLastTouchX + ", " + mLastTouchY + ")" 2992 + " maxZoom=(" + maxZoomX + ", " + maxZoomY + ")" 2993 + " last=("+mLastScrollX+", "+mLastScrollY+")" 2994 + " x=" + x + " y=" + y); 2995 } 2996 } 2997 2998 private void setZoomScrollIn() { 2999 mZoomScrollStart = System.currentTimeMillis(); 3000 } 3001 3002 private float mZoomScrollLimit; 3003 private float mZoomScrollInvLimit; 3004 private int mLastScrollX; 3005 private int mLastScrollY; 3006 private long mZoomScrollStart; 3007 private int mZoomScrollX; 3008 private int mZoomScrollY; 3009 private float mLastZoomScrollRawX = -1000.0f; 3010 private float mLastZoomScrollRawY = -1000.0f; 3011 // The zoomed scale varies from 1.0 to DEFAULT_MIN_ZOOM_SCALE == 0.25. 3012 // The zoom animation duration SCROLL_ZOOM_DURATION == 0.5. 3013 // Two pressures compete for gridding; a high frame rate (e.g. 20 fps) 3014 // and minimizing font cache allocations (fewer frames is better). 3015 // A SCROLL_ZOOM_GRID of 6 permits about 20 zoom levels over 0.5 seconds: 3016 // the inverse of: 1.0, 1.16, 1.33, 1.5, 1.67, 1.84, 2.0, etc. to 4.0 3017 private static final int SCROLL_ZOOM_GRID = 6; 3018 private static final int SCROLL_ZOOM_DURATION = 500; 3019 // Make it easier to get to the bottom of a document by reserving a 32 3020 // pixel buffer, for when the starting drag is a bit below the bottom of 3021 // the magnify frame. 3022 private static final int SCROLL_ZOOM_FINGER_BUFFER = 32; 3023 3024 // draw history 3025 private boolean mDrawHistory = false; 3026 private Picture mHistoryPicture = null; 3027 private int mHistoryWidth = 0; 3028 private int mHistoryHeight = 0; 3029 3030 // Only check the flag, can be called from WebCore thread 3031 boolean drawHistory() { 3032 return mDrawHistory; 3033 } 3034 3035 // Should only be called in UI thread 3036 void switchOutDrawHistory() { 3037 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3038 if (mDrawHistory && mWebViewCore.pictureReady()) { 3039 mDrawHistory = false; 3040 invalidate(); 3041 int oldScrollX = mScrollX; 3042 int oldScrollY = mScrollY; 3043 mScrollX = pinLocX(mScrollX); 3044 mScrollY = pinLocY(mScrollY); 3045 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3046 mUserScroll = false; 3047 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3048 oldScrollY); 3049 } 3050 sendOurVisibleRect(); 3051 } 3052 } 3053 3054 WebViewCore.CursorData cursorData() { 3055 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3056 result.mMoveGeneration = nativeMoveGeneration(); 3057 result.mFrame = nativeCursorFramePointer(); 3058 Point position = nativeCursorPosition(); 3059 result.mX = position.x; 3060 result.mY = position.y; 3061 return result; 3062 } 3063 3064 /** 3065 * Delete text from start to end in the focused textfield. If there is no 3066 * focus, or if start == end, silently fail. If start and end are out of 3067 * order, swap them. 3068 * @param start Beginning of selection to delete. 3069 * @param end End of selection to delete. 3070 */ 3071 /* package */ void deleteSelection(int start, int end) { 3072 mTextGeneration++; 3073 WebViewCore.DeleteSelectionData data 3074 = new WebViewCore.DeleteSelectionData(); 3075 data.mStart = start; 3076 data.mEnd = end; 3077 data.mTextGeneration = mTextGeneration; 3078 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, data); 3079 } 3080 3081 /** 3082 * Set the selection to (start, end) in the focused textfield. If start and 3083 * end are out of order, swap them. 3084 * @param start Beginning of selection. 3085 * @param end End of selection. 3086 */ 3087 /* package */ void setSelection(int start, int end) { 3088 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3089 } 3090 3091 // Called by JNI when a touch event puts a textfield into focus. 3092 private void displaySoftKeyboard(boolean isTextView) { 3093 InputMethodManager imm = (InputMethodManager) 3094 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3095 3096 if (isTextView) { 3097 imm.showSoftInput(mWebTextView, 0); 3098 // Now we need to fake a touch event to place the cursor where the 3099 // user touched. 3100 AbsoluteLayout.LayoutParams lp = (AbsoluteLayout.LayoutParams) 3101 mWebTextView.getLayoutParams(); 3102 if (lp != null) { 3103 // Take the last touch and adjust for the location of the 3104 // WebTextView. 3105 float x = mLastTouchX + (float) (mScrollX - lp.x); 3106 float y = mLastTouchY + (float) (mScrollY - lp.y); 3107 mWebTextView.fakeTouchEvent(x, y); 3108 } 3109 if (mInZoomOverview) { 3110 // if in zoom overview mode, call doDoubleTap() to bring it back 3111 // to normal mode so that user can enter text. 3112 doDoubleTap(); 3113 } 3114 } 3115 else { // used by plugins 3116 imm.showSoftInput(this, 0); 3117 } 3118 } 3119 3120 // Called by WebKit to instruct the UI to hide the keyboard 3121 private void hideSoftKeyboard() { 3122 InputMethodManager imm = (InputMethodManager) 3123 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3124 3125 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3126 } 3127 3128 /* 3129 * This method checks the current focus and cursor and potentially rebuilds 3130 * mWebTextView to have the appropriate properties, such as password, 3131 * multiline, and what text it contains. It also removes it if necessary. 3132 */ 3133 /* package */ void rebuildWebTextView() { 3134 // If the WebView does not have focus, do nothing until it gains focus. 3135 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus()) 3136 || (mTouchMode >= FIRST_SCROLL_ZOOM 3137 && mTouchMode <= LAST_SCROLL_ZOOM)) { 3138 return; 3139 } 3140 boolean alreadyThere = inEditingMode(); 3141 // inEditingMode can only return true if mWebTextView is non-null, 3142 // so we can safely call remove() if (alreadyThere) 3143 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3144 if (alreadyThere) { 3145 mWebTextView.remove(); 3146 } 3147 return; 3148 } 3149 // At this point, we know we have found an input field, so go ahead 3150 // and create the WebTextView if necessary. 3151 if (mWebTextView == null) { 3152 mWebTextView = new WebTextView(mContext, WebView.this); 3153 // Initialize our generation number. 3154 mTextGeneration = 0; 3155 } 3156 mWebTextView.setTextSize(contentToView(nativeFocusCandidateTextSize())); 3157 Rect visibleRect = new Rect(); 3158 calcOurContentVisibleRect(visibleRect); 3159 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3160 // should be in content coordinates. 3161 Rect bounds = nativeFocusCandidateNodeBounds(); 3162 if (!Rect.intersects(bounds, visibleRect)) { 3163 mWebTextView.bringIntoView(); 3164 } 3165 String text = nativeFocusCandidateText(); 3166 int nodePointer = nativeFocusCandidatePointer(); 3167 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3168 // It is possible that we have the same textfield, but it has moved, 3169 // i.e. In the case of opening/closing the screen. 3170 // In that case, we need to set the dimensions, but not the other 3171 // aspects. 3172 // We also need to restore the selection, which gets wrecked by 3173 // calling setTextEntryRect. 3174 Spannable spannable = (Spannable) mWebTextView.getText(); 3175 int start = Selection.getSelectionStart(spannable); 3176 int end = Selection.getSelectionEnd(spannable); 3177 // If the text has been changed by webkit, update it. However, if 3178 // there has been more UI text input, ignore it. We will receive 3179 // another update when that text is recognized. 3180 if (text != null && !text.equals(spannable.toString()) 3181 && nativeTextGeneration() == mTextGeneration) { 3182 mWebTextView.setTextAndKeepSelection(text); 3183 } else { 3184 Selection.setSelection(spannable, start, end); 3185 } 3186 } else { 3187 Rect vBox = contentToView(bounds); 3188 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3189 vBox.height()); 3190 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3191 Gravity.RIGHT : Gravity.NO_GRAVITY); 3192 // this needs to be called before update adapter thread starts to 3193 // ensure the mWebTextView has the same node pointer 3194 mWebTextView.setNodePointer(nodePointer); 3195 int maxLength = -1; 3196 boolean isTextField = nativeFocusCandidateIsTextField(); 3197 if (isTextField) { 3198 maxLength = nativeFocusCandidateMaxLength(); 3199 String name = nativeFocusCandidateName(); 3200 if (mWebViewCore.getSettings().getSaveFormData() 3201 && name != null) { 3202 Message update = mPrivateHandler.obtainMessage( 3203 REQUEST_FORM_DATA, nodePointer); 3204 RequestFormData updater = new RequestFormData(name, 3205 getUrl(), update); 3206 Thread t = new Thread(updater); 3207 t.start(); 3208 } 3209 } 3210 mWebTextView.setMaxLength(maxLength); 3211 AutoCompleteAdapter adapter = null; 3212 mWebTextView.setAdapterCustom(adapter); 3213 mWebTextView.setSingleLine(isTextField); 3214 mWebTextView.setInPassword(nativeFocusCandidateIsPassword()); 3215 if (null == text) { 3216 mWebTextView.setText("", 0, 0); 3217 if (DebugFlags.WEB_VIEW) { 3218 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3219 } 3220 } else { 3221 // Change to true to enable the old style behavior, where 3222 // entering a textfield/textarea always set the selection to the 3223 // whole field. This was desirable for the case where the user 3224 // intends to scroll past the field using the trackball. 3225 // However, it causes a problem when replying to emails - the 3226 // user expects the cursor to be at the beginning of the 3227 // textarea. Testing out a new behavior, where textfields set 3228 // selection at the end, and textareas at the beginning. 3229 if (false) { 3230 mWebTextView.setText(text, 0, text.length()); 3231 } else if (isTextField) { 3232 int length = text.length(); 3233 mWebTextView.setText(text, length, length); 3234 if (DebugFlags.WEB_VIEW) { 3235 Log.v(LOGTAG, "rebuildWebTextView length=" + length); 3236 } 3237 } else { 3238 mWebTextView.setText(text, 0, 0); 3239 if (DebugFlags.WEB_VIEW) { 3240 Log.v(LOGTAG, "rebuildWebTextView !isTextField"); 3241 } 3242 } 3243 } 3244 mWebTextView.requestFocus(); 3245 } 3246 } 3247 3248 /* 3249 * This class requests an Adapter for the WebTextView which shows past 3250 * entries stored in the database. It is a Runnable so that it can be done 3251 * in its own thread, without slowing down the UI. 3252 */ 3253 private class RequestFormData implements Runnable { 3254 private String mName; 3255 private String mUrl; 3256 private Message mUpdateMessage; 3257 3258 public RequestFormData(String name, String url, Message msg) { 3259 mName = name; 3260 mUrl = url; 3261 mUpdateMessage = msg; 3262 } 3263 3264 public void run() { 3265 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3266 if (pastEntries.size() > 0) { 3267 AutoCompleteAdapter adapter = new 3268 AutoCompleteAdapter(mContext, pastEntries); 3269 mUpdateMessage.obj = adapter; 3270 mUpdateMessage.sendToTarget(); 3271 } 3272 } 3273 } 3274 3275 // This is used to determine long press with the center key. Does not 3276 // affect long press with the trackball/touch. 3277 private boolean mGotCenterDown = false; 3278 3279 @Override 3280 public boolean onKeyDown(int keyCode, KeyEvent event) { 3281 if (DebugFlags.WEB_VIEW) { 3282 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3283 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3284 } 3285 3286 if (mNativeClass == 0) { 3287 return false; 3288 } 3289 3290 // do this hack up front, so it always works, regardless of touch-mode 3291 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3292 mAutoRedraw = !mAutoRedraw; 3293 if (mAutoRedraw) { 3294 invalidate(); 3295 } 3296 return true; 3297 } 3298 3299 // Bubble up the key event if 3300 // 1. it is a system key; or 3301 // 2. the host application wants to handle it; or 3302 // 3. webview is in scroll-zoom state; 3303 if (event.isSystem() 3304 || mCallbackProxy.uiOverrideKeyEvent(event) 3305 || (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM)) { 3306 return false; 3307 } 3308 3309 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3310 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3311 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3312 mExtendSelection = false; 3313 mShiftIsPressed = true; 3314 if (nativeHasCursorNode()) { 3315 Rect rect = nativeCursorNodeBounds(); 3316 mSelectX = contentToView(rect.left); 3317 mSelectY = contentToView(rect.top); 3318 } else { 3319 mSelectX = mScrollX + (int) mLastTouchX; 3320 mSelectY = mScrollY + (int) mLastTouchY; 3321 } 3322 nativeHideCursor(); 3323 } 3324 3325 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3326 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3327 // always handle the navigation keys in the UI thread 3328 switchOutDrawHistory(); 3329 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3330 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3331 return true; 3332 } 3333 // Bubble up the key event as WebView doesn't handle it 3334 return false; 3335 } 3336 3337 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3338 switchOutDrawHistory(); 3339 if (event.getRepeatCount() == 0) { 3340 mGotCenterDown = true; 3341 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3342 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3343 // Already checked mNativeClass, so we do not need to check it 3344 // again. 3345 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3346 return true; 3347 } 3348 // Bubble up the key event as WebView doesn't handle it 3349 return false; 3350 } 3351 3352 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3353 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3354 // turn off copy select if a shift-key combo is pressed 3355 mExtendSelection = mShiftIsPressed = false; 3356 if (mTouchMode == TOUCH_SELECT_MODE) { 3357 mTouchMode = TOUCH_INIT_MODE; 3358 } 3359 } 3360 3361 if (getSettings().getNavDump()) { 3362 switch (keyCode) { 3363 case KeyEvent.KEYCODE_4: 3364 // "/data/data/com.android.browser/displayTree.txt" 3365 nativeDumpDisplayTree(getUrl()); 3366 break; 3367 case KeyEvent.KEYCODE_5: 3368 case KeyEvent.KEYCODE_6: 3369 // 5: dump the dom tree to the file 3370 // "/data/data/com.android.browser/domTree.txt" 3371 // 6: dump the dom tree to the adb log 3372 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, 3373 (keyCode == KeyEvent.KEYCODE_5) ? 1 : 0, 0); 3374 break; 3375 case KeyEvent.KEYCODE_7: 3376 case KeyEvent.KEYCODE_8: 3377 // 7: dump the render tree to the file 3378 // "/data/data/com.android.browser/renderTree.txt" 3379 // 8: dump the render tree to the adb log 3380 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, 3381 (keyCode == KeyEvent.KEYCODE_7) ? 1 : 0, 0); 3382 break; 3383 case KeyEvent.KEYCODE_9: 3384 nativeInstrumentReport(); 3385 return true; 3386 } 3387 } 3388 3389 if (nativeCursorIsPlugin()) { 3390 nativeUpdatePluginReceivesEvents(); 3391 invalidate(); 3392 } else if (nativeCursorIsTextInput()) { 3393 // This message will put the node in focus, for the DOM's notion 3394 // of focus, and make the focuscontroller active 3395 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3396 nativeCursorNodePointer()); 3397 // This will bring up the WebTextView and put it in focus, for 3398 // our view system's notion of focus 3399 rebuildWebTextView(); 3400 // Now we need to pass the event to it 3401 return mWebTextView.onKeyDown(keyCode, event); 3402 } else if (nativeHasFocusNode()) { 3403 // In this case, the cursor is not on a text input, but the focus 3404 // might be. Check it, and if so, hand over to the WebTextView. 3405 rebuildWebTextView(); 3406 if (inEditingMode()) { 3407 return mWebTextView.onKeyDown(keyCode, event); 3408 } 3409 } 3410 3411 // TODO: should we pass all the keys to DOM or check the meta tag 3412 if (nativeCursorWantsKeyEvents() || true) { 3413 // pass the key to DOM 3414 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3415 // return true as DOM handles the key 3416 return true; 3417 } 3418 3419 // Bubble up the key event as WebView doesn't handle it 3420 return false; 3421 } 3422 3423 @Override 3424 public boolean onKeyUp(int keyCode, KeyEvent event) { 3425 if (DebugFlags.WEB_VIEW) { 3426 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3427 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3428 } 3429 3430 if (mNativeClass == 0) { 3431 return false; 3432 } 3433 3434 // special CALL handling when cursor node's href is "tel:XXX" 3435 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3436 String text = nativeCursorText(); 3437 if (!nativeCursorIsTextInput() && text != null 3438 && text.startsWith(SCHEME_TEL)) { 3439 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3440 getContext().startActivity(intent); 3441 return true; 3442 } 3443 } 3444 3445 // Bubble up the key event if 3446 // 1. it is a system key; or 3447 // 2. the host application wants to handle it; 3448 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3449 return false; 3450 } 3451 3452 // special handling in scroll_zoom state 3453 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 3454 if (KeyEvent.KEYCODE_DPAD_CENTER == keyCode 3455 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN) { 3456 setZoomScrollIn(); 3457 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 3458 invalidate(); 3459 return true; 3460 } 3461 return false; 3462 } 3463 3464 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3465 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3466 if (commitCopy()) { 3467 return true; 3468 } 3469 } 3470 3471 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3472 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3473 // always handle the navigation keys in the UI thread 3474 // Bubble up the key event as WebView doesn't handle it 3475 return false; 3476 } 3477 3478 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3479 // remove the long press message first 3480 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3481 mGotCenterDown = false; 3482 3483 if (mShiftIsPressed) { 3484 return false; 3485 } 3486 if (getSettings().supportZoom() 3487 && mTouchMode == TOUCH_DOUBLECLICK_MODE) { 3488 zoomScrollOut(); 3489 } else { 3490 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3491 .obtainMessage(SWITCH_TO_CLICK), TAP_TIMEOUT); 3492 if (DebugFlags.WEB_VIEW) { 3493 Log.v(LOGTAG, "TOUCH_DOUBLECLICK_MODE"); 3494 } 3495 mTouchMode = TOUCH_DOUBLECLICK_MODE; 3496 } 3497 return true; 3498 } 3499 3500 // TODO: should we pass all the keys to DOM or check the meta tag 3501 if (nativeCursorWantsKeyEvents() || true) { 3502 // pass the key to DOM 3503 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3504 // return true as DOM handles the key 3505 return true; 3506 } 3507 3508 // Bubble up the key event as WebView doesn't handle it 3509 return false; 3510 } 3511 3512 /** 3513 * @hide 3514 */ 3515 public void emulateShiftHeld() { 3516 mExtendSelection = false; 3517 mShiftIsPressed = true; 3518 nativeHideCursor(); 3519 } 3520 3521 private boolean commitCopy() { 3522 boolean copiedSomething = false; 3523 if (mExtendSelection) { 3524 // copy region so core operates on copy without touching orig. 3525 Region selection = new Region(nativeGetSelection()); 3526 if (selection.isEmpty() == false) { 3527 Toast.makeText(mContext 3528 , com.android.internal.R.string.text_copied 3529 , Toast.LENGTH_SHORT).show(); 3530 mWebViewCore.sendMessage(EventHub.GET_SELECTION, selection); 3531 copiedSomething = true; 3532 } 3533 mExtendSelection = false; 3534 } 3535 mShiftIsPressed = false; 3536 if (mTouchMode == TOUCH_SELECT_MODE) { 3537 mTouchMode = TOUCH_INIT_MODE; 3538 } 3539 return copiedSomething; 3540 } 3541 3542 // Set this as a hierarchy change listener so we can know when this view 3543 // is removed and still have access to our parent. 3544 @Override 3545 protected void onAttachedToWindow() { 3546 super.onAttachedToWindow(); 3547 ViewParent parent = getParent(); 3548 if (parent instanceof ViewGroup) { 3549 ViewGroup p = (ViewGroup) parent; 3550 p.setOnHierarchyChangeListener(this); 3551 } 3552 } 3553 3554 @Override 3555 protected void onDetachedFromWindow() { 3556 super.onDetachedFromWindow(); 3557 ViewParent parent = getParent(); 3558 if (parent instanceof ViewGroup) { 3559 ViewGroup p = (ViewGroup) parent; 3560 p.setOnHierarchyChangeListener(null); 3561 } 3562 3563 // Clean up the zoom controller 3564 mZoomButtonsController.setVisible(false); 3565 } 3566 3567 // Implementation for OnHierarchyChangeListener 3568 public void onChildViewAdded(View parent, View child) {} 3569 3570 public void onChildViewRemoved(View p, View child) { 3571 if (child == this) { 3572 clearTextEntry(); 3573 } 3574 } 3575 3576 /** 3577 * @deprecated WebView should not have implemented 3578 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3579 * does nothing now. 3580 */ 3581 @Deprecated 3582 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3583 } 3584 3585 // To avoid drawing the cursor ring, and remove the TextView when our window 3586 // loses focus. 3587 @Override 3588 public void onWindowFocusChanged(boolean hasWindowFocus) { 3589 if (hasWindowFocus) { 3590 if (hasFocus()) { 3591 // If our window regained focus, and we have focus, then begin 3592 // drawing the cursor ring 3593 mDrawCursorRing = true; 3594 if (mNativeClass != 0) { 3595 nativeRecordButtons(true, false, true); 3596 if (inEditingMode()) { 3597 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3598 } 3599 } 3600 } else { 3601 // If our window gained focus, but we do not have it, do not 3602 // draw the cursor ring. 3603 mDrawCursorRing = false; 3604 // We do not call nativeRecordButtons here because we assume 3605 // that when we lost focus, or window focus, it got called with 3606 // false for the first parameter 3607 } 3608 } else { 3609 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3610 /* 3611 * The zoom controls come in their own window, so our window 3612 * loses focus. Our policy is to not draw the cursor ring if 3613 * our window is not focused, but this is an exception since 3614 * the user can still navigate the web page with the zoom 3615 * controls showing. 3616 */ 3617 // If our window has lost focus, stop drawing the cursor ring 3618 mDrawCursorRing = false; 3619 } 3620 mGotKeyDown = false; 3621 mShiftIsPressed = false; 3622 if (mNativeClass != 0) { 3623 nativeRecordButtons(false, false, true); 3624 } 3625 setFocusControllerInactive(); 3626 } 3627 invalidate(); 3628 super.onWindowFocusChanged(hasWindowFocus); 3629 } 3630 3631 /* 3632 * Pass a message to WebCore Thread, telling the WebCore::Page's 3633 * FocusController to be "inactive" so that it will 3634 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3635 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3636 */ 3637 /* package */ void setFocusControllerInactive() { 3638 // Do not need to also check whether mWebViewCore is null, because 3639 // mNativeClass is only set if mWebViewCore is non null 3640 if (mNativeClass == 0) return; 3641 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3642 } 3643 3644 @Override 3645 protected void onFocusChanged(boolean focused, int direction, 3646 Rect previouslyFocusedRect) { 3647 if (DebugFlags.WEB_VIEW) { 3648 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3649 } 3650 if (focused) { 3651 // When we regain focus, if we have window focus, resume drawing 3652 // the cursor ring 3653 if (hasWindowFocus()) { 3654 mDrawCursorRing = true; 3655 if (mNativeClass != 0) { 3656 nativeRecordButtons(true, false, true); 3657 } 3658 //} else { 3659 // The WebView has gained focus while we do not have 3660 // windowfocus. When our window lost focus, we should have 3661 // called nativeRecordButtons(false...) 3662 } 3663 } else { 3664 // When we lost focus, unless focus went to the TextView (which is 3665 // true if we are in editing mode), stop drawing the cursor ring. 3666 if (!inEditingMode()) { 3667 mDrawCursorRing = false; 3668 if (mNativeClass != 0) { 3669 nativeRecordButtons(false, false, true); 3670 } 3671 setFocusControllerInactive(); 3672 } 3673 mGotKeyDown = false; 3674 } 3675 3676 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3677 } 3678 3679 @Override 3680 protected void onSizeChanged(int w, int h, int ow, int oh) { 3681 super.onSizeChanged(w, h, ow, oh); 3682 // Center zooming to the center of the screen. 3683 mZoomCenterX = getViewWidth() * .5f; 3684 mZoomCenterY = getViewHeight() * .5f; 3685 3686 // update mMinZoomScale if the minimum zoom scale is not fixed 3687 if (!mMinZoomScaleFixed) { 3688 mMinZoomScale = (float) getViewWidth() 3689 / Math.max(ZOOM_OUT_WIDTH, mDrawHistory ? mHistoryPicture 3690 .getWidth() : (mZoomOverviewWidth > 0 ? 3691 mZoomOverviewWidth : mContentWidth)); 3692 } 3693 3694 // we always force, in case our height changed, in which case we still 3695 // want to send the notification over to webkit 3696 setNewZoomScale(mActualScale, true); 3697 } 3698 3699 @Override 3700 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3701 super.onScrollChanged(l, t, oldl, oldt); 3702 3703 sendOurVisibleRect(); 3704 } 3705 3706 3707 @Override 3708 public boolean dispatchKeyEvent(KeyEvent event) { 3709 boolean dispatch = true; 3710 3711 if (!inEditingMode()) { 3712 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3713 mGotKeyDown = true; 3714 } else { 3715 if (!mGotKeyDown) { 3716 /* 3717 * We got a key up for which we were not the recipient of 3718 * the original key down. Don't give it to the view. 3719 */ 3720 dispatch = false; 3721 } 3722 mGotKeyDown = false; 3723 } 3724 } 3725 3726 if (dispatch) { 3727 return super.dispatchKeyEvent(event); 3728 } else { 3729 // We didn't dispatch, so let something else handle the key 3730 return false; 3731 } 3732 } 3733 3734 // Here are the snap align logic: 3735 // 1. If it starts nearly horizontally or vertically, snap align; 3736 // 2. If there is a dramitic direction change, let it go; 3737 // 3. If there is a same direction back and forth, lock it. 3738 3739 // adjustable parameters 3740 private int mMinLockSnapReverseDistance; 3741 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 3742 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 3743 3744 @Override 3745 public boolean onTouchEvent(MotionEvent ev) { 3746 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 3747 return false; 3748 } 3749 3750 if (DebugFlags.WEB_VIEW) { 3751 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 3752 + mTouchMode); 3753 } 3754 3755 int action = ev.getAction(); 3756 float x = ev.getX(); 3757 float y = ev.getY(); 3758 long eventTime = ev.getEventTime(); 3759 3760 // Due to the touch screen edge effect, a touch closer to the edge 3761 // always snapped to the edge. As getViewWidth() can be different from 3762 // getWidth() due to the scrollbar, adjusting the point to match 3763 // getViewWidth(). Same applied to the height. 3764 if (x > getViewWidth() - 1) { 3765 x = getViewWidth() - 1; 3766 } 3767 if (y > getViewHeight() - 1) { 3768 y = getViewHeight() - 1; 3769 } 3770 3771 // pass the touch events from UI thread to WebCore thread 3772 if (mForwardTouchEvents && mTouchMode != SCROLL_ZOOM_OUT 3773 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN 3774 && mTouchMode != SCROLL_ZOOM_ANIMATION_OUT 3775 && (action != MotionEvent.ACTION_MOVE || 3776 eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 3777 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 3778 ted.mAction = action; 3779 ted.mX = viewToContent((int) x + mScrollX); 3780 ted.mY = viewToContent((int) y + mScrollY); 3781 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 3782 mLastSentTouchTime = eventTime; 3783 } 3784 3785 int deltaX = (int) (mLastTouchX - x); 3786 int deltaY = (int) (mLastTouchY - y); 3787 3788 switch (action) { 3789 case MotionEvent.ACTION_DOWN: { 3790 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3791 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3792 // no interaction while animation is in progress 3793 break; 3794 } else if (mTouchMode == SCROLL_ZOOM_OUT) { 3795 mLastScrollX = mZoomScrollX; 3796 mLastScrollY = mZoomScrollY; 3797 // If two taps are close, ignore the first tap 3798 } else if (!mScroller.isFinished()) { 3799 mScroller.abortAnimation(); 3800 mTouchMode = TOUCH_DRAG_START_MODE; 3801 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 3802 } else if (mShiftIsPressed) { 3803 mSelectX = mScrollX + (int) x; 3804 mSelectY = mScrollY + (int) y; 3805 mTouchMode = TOUCH_SELECT_MODE; 3806 if (DebugFlags.WEB_VIEW) { 3807 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 3808 } 3809 nativeMoveSelection(viewToContent(mSelectX) 3810 , viewToContent(mSelectY), false); 3811 mTouchSelection = mExtendSelection = true; 3812 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 3813 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 3814 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 3815 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 3816 } else { 3817 // commit the short press action for the previous tap 3818 doShortPress(); 3819 // continue, mTouchMode should be still TOUCH_INIT_MODE 3820 } 3821 } else { 3822 mTouchMode = TOUCH_INIT_MODE; 3823 mPreventDrag = mForwardTouchEvents; 3824 mWebViewCore.sendMessage( 3825 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 3826 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 3827 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 3828 (eventTime - mLastTouchUpTime), eventTime); 3829 } 3830 } 3831 // Trigger the link 3832 if (mTouchMode == TOUCH_INIT_MODE 3833 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3834 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3835 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 3836 } 3837 // Remember where the motion event started 3838 mLastTouchX = x; 3839 mLastTouchY = y; 3840 mLastTouchTime = eventTime; 3841 mVelocityTracker = VelocityTracker.obtain(); 3842 mSnapScrollMode = SNAP_NONE; 3843 break; 3844 } 3845 case MotionEvent.ACTION_MOVE: { 3846 if (mTouchMode == TOUCH_DONE_MODE 3847 || mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3848 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3849 // no dragging during scroll zoom animation 3850 break; 3851 } 3852 if (mTouchMode == SCROLL_ZOOM_OUT) { 3853 // while fully zoomed out, move the virtual window 3854 moveZoomScrollWindow(x, y); 3855 break; 3856 } 3857 mVelocityTracker.addMovement(ev); 3858 3859 if (mTouchMode != TOUCH_DRAG_MODE) { 3860 if (mTouchMode == TOUCH_SELECT_MODE) { 3861 mSelectX = mScrollX + (int) x; 3862 mSelectY = mScrollY + (int) y; 3863 if (DebugFlags.WEB_VIEW) { 3864 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 3865 } 3866 nativeMoveSelection(viewToContent(mSelectX) 3867 , viewToContent(mSelectY), true); 3868 invalidate(); 3869 break; 3870 } 3871 if (mPreventDrag || (deltaX * deltaX + deltaY * deltaY) 3872 < mTouchSlopSquare) { 3873 break; 3874 } 3875 3876 if (mTouchMode == TOUCH_SHORTPRESS_MODE 3877 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3878 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3879 } else if (mTouchMode == TOUCH_INIT_MODE 3880 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3881 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3882 } 3883 3884 // if it starts nearly horizontal or vertical, enforce it 3885 int ax = Math.abs(deltaX); 3886 int ay = Math.abs(deltaY); 3887 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 3888 mSnapScrollMode = SNAP_X; 3889 mSnapPositive = deltaX > 0; 3890 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 3891 mSnapScrollMode = SNAP_Y; 3892 mSnapPositive = deltaY > 0; 3893 } 3894 3895 mTouchMode = TOUCH_DRAG_MODE; 3896 WebViewCore.pauseUpdate(mWebViewCore); 3897 if (!mDragFromTextInput) { 3898 nativeHideCursor(); 3899 } 3900 WebSettings settings = getSettings(); 3901 if (settings.supportZoom() && !mInZoomOverview 3902 && settings.getBuiltInZoomControls() 3903 && !mZoomButtonsController.isVisible() 3904 && (canZoomScrollOut() || 3905 mMinZoomScale < mMaxZoomScale)) { 3906 mZoomButtonsController.setVisible(true); 3907 } 3908 } 3909 3910 // do pan 3911 int newScrollX = pinLocX(mScrollX + deltaX); 3912 deltaX = newScrollX - mScrollX; 3913 int newScrollY = pinLocY(mScrollY + deltaY); 3914 deltaY = newScrollY - mScrollY; 3915 boolean done = false; 3916 if (deltaX == 0 && deltaY == 0) { 3917 done = true; 3918 } else { 3919 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 3920 int ax = Math.abs(deltaX); 3921 int ay = Math.abs(deltaY); 3922 if (mSnapScrollMode == SNAP_X) { 3923 // radical change means getting out of snap mode 3924 if (ay > MAX_SLOPE_FOR_DIAG * ax 3925 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3926 mSnapScrollMode = SNAP_NONE; 3927 } 3928 // reverse direction means lock in the snap mode 3929 if ((ax > MAX_SLOPE_FOR_DIAG * ay) && 3930 ((mSnapPositive && 3931 deltaX < -mMinLockSnapReverseDistance) 3932 || (!mSnapPositive && 3933 deltaX > mMinLockSnapReverseDistance))) { 3934 mSnapScrollMode = SNAP_X_LOCK; 3935 } 3936 } else { 3937 // radical change means getting out of snap mode 3938 if ((ax > MAX_SLOPE_FOR_DIAG * ay) 3939 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3940 mSnapScrollMode = SNAP_NONE; 3941 } 3942 // reverse direction means lock in the snap mode 3943 if ((ay > MAX_SLOPE_FOR_DIAG * ax) && 3944 ((mSnapPositive && 3945 deltaY < -mMinLockSnapReverseDistance) 3946 || (!mSnapPositive && 3947 deltaY > mMinLockSnapReverseDistance))) { 3948 mSnapScrollMode = SNAP_Y_LOCK; 3949 } 3950 } 3951 } 3952 3953 if (mSnapScrollMode == SNAP_X 3954 || mSnapScrollMode == SNAP_X_LOCK) { 3955 scrollBy(deltaX, 0); 3956 mLastTouchX = x; 3957 } else if (mSnapScrollMode == SNAP_Y 3958 || mSnapScrollMode == SNAP_Y_LOCK) { 3959 scrollBy(0, deltaY); 3960 mLastTouchY = y; 3961 } else { 3962 scrollBy(deltaX, deltaY); 3963 mLastTouchX = x; 3964 mLastTouchY = y; 3965 } 3966 mLastTouchTime = eventTime; 3967 mUserScroll = true; 3968 } 3969 3970 if (!getSettings().getBuiltInZoomControls() && !mInZoomOverview) { 3971 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 3972 boolean showMagnify = canZoomScrollOut(); 3973 if (mZoomControls != null && (showPlusMinus || showMagnify)) { 3974 if (mZoomControls.getVisibility() == View.VISIBLE) { 3975 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 3976 } else { 3977 mZoomControls.show(showPlusMinus, showMagnify); 3978 } 3979 mPrivateHandler.postDelayed(mZoomControlRunnable, 3980 ZOOM_CONTROLS_TIMEOUT); 3981 } 3982 } 3983 3984 if (done) { 3985 // return false to indicate that we can't pan out of the 3986 // view space 3987 return false; 3988 } 3989 break; 3990 } 3991 case MotionEvent.ACTION_UP: { 3992 mLastTouchUpTime = eventTime; 3993 switch (mTouchMode) { 3994 case TOUCH_DOUBLE_TAP_MODE: // double tap 3995 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3996 mTouchMode = TOUCH_DONE_MODE; 3997 doDoubleTap(); 3998 break; 3999 case TOUCH_INIT_MODE: // tap 4000 if (ENABLE_DOUBLETAP_ZOOM) { 4001 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4002 if (!mPreventDrag) { 4003 mPrivateHandler.sendMessageDelayed( 4004 mPrivateHandler.obtainMessage( 4005 RELEASE_SINGLE_TAP), 4006 ViewConfiguration.getDoubleTapTimeout()); 4007 } 4008 break; 4009 } 4010 // fall through 4011 case TOUCH_SHORTPRESS_START_MODE: 4012 case TOUCH_SHORTPRESS_MODE: 4013 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4014 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4015 mTouchMode = TOUCH_DONE_MODE; 4016 doShortPress(); 4017 break; 4018 case TOUCH_SELECT_MODE: 4019 commitCopy(); 4020 mTouchSelection = false; 4021 break; 4022 case SCROLL_ZOOM_ANIMATION_IN: 4023 case SCROLL_ZOOM_ANIMATION_OUT: 4024 // no action during scroll animation 4025 break; 4026 case SCROLL_ZOOM_OUT: 4027 if (DebugFlags.WEB_VIEW) { 4028 Log.v(LOGTAG, "ACTION_UP SCROLL_ZOOM_OUT" 4029 + " eventTime - mLastTouchTime=" 4030 + (eventTime - mLastTouchTime)); 4031 } 4032 // for now, always zoom back when the drag completes 4033 if (true || eventTime - mLastTouchTime < TAP_TIMEOUT) { 4034 // but if we tap, zoom in where we tap 4035 if (eventTime - mLastTouchTime < TAP_TIMEOUT) { 4036 zoomScrollTap(x, y); 4037 } 4038 // start zooming in back to the original view 4039 setZoomScrollIn(); 4040 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 4041 invalidate(); 4042 } 4043 break; 4044 case TOUCH_DRAG_MODE: 4045 // if the user waits a while w/o moving before the 4046 // up, we don't want to do a fling 4047 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4048 mVelocityTracker.addMovement(ev); 4049 doFling(); 4050 break; 4051 } 4052 WebViewCore.resumeUpdate(mWebViewCore); 4053 break; 4054 case TOUCH_DRAG_START_MODE: 4055 case TOUCH_DONE_MODE: 4056 // do nothing 4057 break; 4058 } 4059 // we also use mVelocityTracker == null to tell us that we are 4060 // not "moving around", so we can take the slower/prettier 4061 // mode in the drawing code 4062 if (mVelocityTracker != null) { 4063 mVelocityTracker.recycle(); 4064 mVelocityTracker = null; 4065 } 4066 break; 4067 } 4068 case MotionEvent.ACTION_CANCEL: { 4069 // we also use mVelocityTracker == null to tell us that we are 4070 // not "moving around", so we can take the slower/prettier 4071 // mode in the drawing code 4072 if (mVelocityTracker != null) { 4073 mVelocityTracker.recycle(); 4074 mVelocityTracker = null; 4075 } 4076 if (mTouchMode == SCROLL_ZOOM_OUT || 4077 mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 4078 scrollTo(mZoomScrollX, mZoomScrollY); 4079 } else if (mTouchMode == TOUCH_DRAG_MODE) { 4080 WebViewCore.resumeUpdate(mWebViewCore); 4081 } 4082 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4083 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4084 mTouchMode = TOUCH_DONE_MODE; 4085 nativeHideCursor(); 4086 break; 4087 } 4088 } 4089 return true; 4090 } 4091 4092 private long mTrackballFirstTime = 0; 4093 private long mTrackballLastTime = 0; 4094 private float mTrackballRemainsX = 0.0f; 4095 private float mTrackballRemainsY = 0.0f; 4096 private int mTrackballXMove = 0; 4097 private int mTrackballYMove = 0; 4098 private boolean mExtendSelection = false; 4099 private boolean mTouchSelection = false; 4100 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4101 private static final int TRACKBALL_TIMEOUT = 200; 4102 private static final int TRACKBALL_WAIT = 100; 4103 private static final int TRACKBALL_SCALE = 400; 4104 private static final int TRACKBALL_SCROLL_COUNT = 5; 4105 private static final int TRACKBALL_MOVE_COUNT = 10; 4106 private static final int TRACKBALL_MULTIPLIER = 3; 4107 private static final int SELECT_CURSOR_OFFSET = 16; 4108 private int mSelectX = 0; 4109 private int mSelectY = 0; 4110 private boolean mShiftIsPressed = false; 4111 private boolean mTrackballDown = false; 4112 private long mTrackballUpTime = 0; 4113 private long mLastCursorTime = 0; 4114 private Rect mLastCursorBounds; 4115 4116 // Set by default; BrowserActivity clears to interpret trackball data 4117 // directly for movement. Currently, the framework only passes 4118 // arrow key events, not trackball events, from one child to the next 4119 private boolean mMapTrackballToArrowKeys = true; 4120 4121 public void setMapTrackballToArrowKeys(boolean setMap) { 4122 mMapTrackballToArrowKeys = setMap; 4123 } 4124 4125 void resetTrackballTime() { 4126 mTrackballLastTime = 0; 4127 } 4128 4129 @Override 4130 public boolean onTrackballEvent(MotionEvent ev) { 4131 long time = ev.getEventTime(); 4132 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4133 if (ev.getY() > 0) pageDown(true); 4134 if (ev.getY() < 0) pageUp(true); 4135 return true; 4136 } 4137 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4138 mPrivateHandler.removeMessages(SWITCH_TO_CLICK); 4139 mTrackballDown = true; 4140 if (mNativeClass == 0) { 4141 return false; 4142 } 4143 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4144 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4145 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4146 nativeSelectBestAt(mLastCursorBounds); 4147 } 4148 if (DebugFlags.WEB_VIEW) { 4149 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4150 + " time=" + time 4151 + " mLastCursorTime=" + mLastCursorTime); 4152 } 4153 if (isInTouchMode()) requestFocusFromTouch(); 4154 return false; // let common code in onKeyDown at it 4155 } 4156 if (ev.getAction() == MotionEvent.ACTION_UP) { 4157 // LONG_PRESS_CENTER is set in common onKeyDown 4158 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4159 mTrackballDown = false; 4160 mTrackballUpTime = time; 4161 if (mShiftIsPressed) { 4162 if (mExtendSelection) { 4163 commitCopy(); 4164 } else { 4165 mExtendSelection = true; 4166 } 4167 } 4168 if (DebugFlags.WEB_VIEW) { 4169 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4170 + " time=" + time 4171 ); 4172 } 4173 return false; // let common code in onKeyUp at it 4174 } 4175 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4176 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4177 return false; 4178 } 4179 // no move if we're still waiting on SWITCH_TO_CLICK timeout 4180 if (mTouchMode == TOUCH_DOUBLECLICK_MODE) { 4181 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent 2 click quit"); 4182 return true; 4183 } 4184 if (mTrackballDown) { 4185 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4186 return true; // discard move if trackball is down 4187 } 4188 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4189 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4190 return true; 4191 } 4192 // TODO: alternatively we can do panning as touch does 4193 switchOutDrawHistory(); 4194 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4195 if (DebugFlags.WEB_VIEW) { 4196 Log.v(LOGTAG, "onTrackballEvent time=" 4197 + time + " last=" + mTrackballLastTime); 4198 } 4199 mTrackballFirstTime = time; 4200 mTrackballXMove = mTrackballYMove = 0; 4201 } 4202 mTrackballLastTime = time; 4203 if (DebugFlags.WEB_VIEW) { 4204 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4205 } 4206 mTrackballRemainsX += ev.getX(); 4207 mTrackballRemainsY += ev.getY(); 4208 doTrackball(time); 4209 return true; 4210 } 4211 4212 void moveSelection(float xRate, float yRate) { 4213 if (mNativeClass == 0) 4214 return; 4215 int width = getViewWidth(); 4216 int height = getViewHeight(); 4217 mSelectX += scaleTrackballX(xRate, width); 4218 mSelectY += scaleTrackballY(yRate, height); 4219 int maxX = width + mScrollX; 4220 int maxY = height + mScrollY; 4221 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4222 , mSelectX)); 4223 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4224 , mSelectY)); 4225 if (DebugFlags.WEB_VIEW) { 4226 Log.v(LOGTAG, "moveSelection" 4227 + " mSelectX=" + mSelectX 4228 + " mSelectY=" + mSelectY 4229 + " mScrollX=" + mScrollX 4230 + " mScrollY=" + mScrollY 4231 + " xRate=" + xRate 4232 + " yRate=" + yRate 4233 ); 4234 } 4235 nativeMoveSelection(viewToContent(mSelectX) 4236 , viewToContent(mSelectY), mExtendSelection); 4237 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4238 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4239 : 0; 4240 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4241 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4242 : 0; 4243 pinScrollBy(scrollX, scrollY, true, 0); 4244 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4245 requestRectangleOnScreen(select); 4246 invalidate(); 4247 } 4248 4249 private int scaleTrackballX(float xRate, int width) { 4250 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4251 int nextXMove = xMove; 4252 if (xMove > 0) { 4253 if (xMove > mTrackballXMove) { 4254 xMove -= mTrackballXMove; 4255 } 4256 } else if (xMove < mTrackballXMove) { 4257 xMove -= mTrackballXMove; 4258 } 4259 mTrackballXMove = nextXMove; 4260 return xMove; 4261 } 4262 4263 private int scaleTrackballY(float yRate, int height) { 4264 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4265 int nextYMove = yMove; 4266 if (yMove > 0) { 4267 if (yMove > mTrackballYMove) { 4268 yMove -= mTrackballYMove; 4269 } 4270 } else if (yMove < mTrackballYMove) { 4271 yMove -= mTrackballYMove; 4272 } 4273 mTrackballYMove = nextYMove; 4274 return yMove; 4275 } 4276 4277 private int keyCodeToSoundsEffect(int keyCode) { 4278 switch(keyCode) { 4279 case KeyEvent.KEYCODE_DPAD_UP: 4280 return SoundEffectConstants.NAVIGATION_UP; 4281 case KeyEvent.KEYCODE_DPAD_RIGHT: 4282 return SoundEffectConstants.NAVIGATION_RIGHT; 4283 case KeyEvent.KEYCODE_DPAD_DOWN: 4284 return SoundEffectConstants.NAVIGATION_DOWN; 4285 case KeyEvent.KEYCODE_DPAD_LEFT: 4286 return SoundEffectConstants.NAVIGATION_LEFT; 4287 } 4288 throw new IllegalArgumentException("keyCode must be one of " + 4289 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4290 "KEYCODE_DPAD_LEFT}."); 4291 } 4292 4293 private void doTrackball(long time) { 4294 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4295 if (elapsed == 0) { 4296 elapsed = TRACKBALL_TIMEOUT; 4297 } 4298 float xRate = mTrackballRemainsX * 1000 / elapsed; 4299 float yRate = mTrackballRemainsY * 1000 / elapsed; 4300 if (mShiftIsPressed) { 4301 moveSelection(xRate, yRate); 4302 mTrackballRemainsX = mTrackballRemainsY = 0; 4303 return; 4304 } 4305 float ax = Math.abs(xRate); 4306 float ay = Math.abs(yRate); 4307 float maxA = Math.max(ax, ay); 4308 if (DebugFlags.WEB_VIEW) { 4309 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4310 + " xRate=" + xRate 4311 + " yRate=" + yRate 4312 + " mTrackballRemainsX=" + mTrackballRemainsX 4313 + " mTrackballRemainsY=" + mTrackballRemainsY); 4314 } 4315 int width = mContentWidth - getViewWidth(); 4316 int height = mContentHeight - getViewHeight(); 4317 if (width < 0) width = 0; 4318 if (height < 0) height = 0; 4319 if (mTouchMode == SCROLL_ZOOM_OUT) { 4320 int oldX = mZoomScrollX; 4321 int oldY = mZoomScrollY; 4322 int maxWH = Math.max(width, height); 4323 mZoomScrollX += scaleTrackballX(xRate, maxWH); 4324 mZoomScrollY += scaleTrackballY(yRate, maxWH); 4325 if (DebugFlags.WEB_VIEW) { 4326 Log.v(LOGTAG, "doTrackball SCROLL_ZOOM_OUT" 4327 + " mZoomScrollX=" + mZoomScrollX 4328 + " mZoomScrollY=" + mZoomScrollY); 4329 } 4330 mZoomScrollX = Math.min(width, Math.max(0, mZoomScrollX)); 4331 mZoomScrollY = Math.min(height, Math.max(0, mZoomScrollY)); 4332 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 4333 invalidate(); 4334 } 4335 mTrackballRemainsX = mTrackballRemainsY = 0; 4336 return; 4337 } 4338 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4339 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4340 maxA = Math.max(ax, ay); 4341 int count = Math.max(0, (int) maxA); 4342 int oldScrollX = mScrollX; 4343 int oldScrollY = mScrollY; 4344 if (count > 0) { 4345 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4346 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4347 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4348 KeyEvent.KEYCODE_DPAD_RIGHT; 4349 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4350 if (DebugFlags.WEB_VIEW) { 4351 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4352 + " count=" + count 4353 + " mTrackballRemainsX=" + mTrackballRemainsX 4354 + " mTrackballRemainsY=" + mTrackballRemainsY); 4355 } 4356 if (navHandledKey(selectKeyCode, count, false, time, false)) { 4357 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4358 } 4359 mTrackballRemainsX = mTrackballRemainsY = 0; 4360 } 4361 if (count >= TRACKBALL_SCROLL_COUNT) { 4362 int xMove = scaleTrackballX(xRate, width); 4363 int yMove = scaleTrackballY(yRate, height); 4364 if (DebugFlags.WEB_VIEW) { 4365 Log.v(LOGTAG, "doTrackball pinScrollBy" 4366 + " count=" + count 4367 + " xMove=" + xMove + " yMove=" + yMove 4368 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4369 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4370 ); 4371 } 4372 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4373 xMove = 0; 4374 } 4375 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4376 yMove = 0; 4377 } 4378 if (xMove != 0 || yMove != 0) { 4379 pinScrollBy(xMove, yMove, true, 0); 4380 } 4381 mUserScroll = true; 4382 } 4383 } 4384 4385 public void flingScroll(int vx, int vy) { 4386 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4387 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4388 4389 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 4390 invalidate(); 4391 } 4392 4393 private void doFling() { 4394 if (mVelocityTracker == null) { 4395 return; 4396 } 4397 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4398 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4399 4400 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 4401 int vx = (int) mVelocityTracker.getXVelocity(); 4402 int vy = (int) mVelocityTracker.getYVelocity(); 4403 4404 if (mSnapScrollMode != SNAP_NONE) { 4405 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_X_LOCK) { 4406 vy = 0; 4407 } else { 4408 vx = 0; 4409 } 4410 } 4411 4412 if (true /* EMG release: make our fling more like Maps' */) { 4413 // maps cuts their velocity in half 4414 vx = vx * 3 / 4; 4415 vy = vy * 3 / 4; 4416 } 4417 4418 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 4419 // TODO: duration is calculated based on velocity, if the range is 4420 // small, the animation will stop before duration is up. We may 4421 // want to calculate how long the animation is going to run to precisely 4422 // resume the webcore update. 4423 final int time = mScroller.getDuration(); 4424 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_UPDATE, time); 4425 invalidate(); 4426 } 4427 4428 private boolean zoomWithPreview(float scale) { 4429 float oldScale = mActualScale; 4430 mInitialScrollX = mScrollX; 4431 mInitialScrollY = mScrollY; 4432 4433 // snap to DEFAULT_SCALE if it is close 4434 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 4435 scale = mDefaultScale; 4436 } 4437 4438 setNewZoomScale(scale, false); 4439 4440 if (oldScale != mActualScale) { 4441 // use mZoomPickerScale to see zoom preview first 4442 mZoomStart = SystemClock.uptimeMillis(); 4443 mInvInitialZoomScale = 1.0f / oldScale; 4444 mInvFinalZoomScale = 1.0f / mActualScale; 4445 mZoomScale = mActualScale; 4446 if (!mInZoomOverview) { 4447 mLastScale = scale; 4448 } 4449 invalidate(); 4450 return true; 4451 } else { 4452 return false; 4453 } 4454 } 4455 4456 /** 4457 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 4458 * in charge of installing this view to the view hierarchy. This view will 4459 * become visible when the user starts scrolling via touch and fade away if 4460 * the user does not interact with it. 4461 * <p/> 4462 * API version 3 introduces a built-in zoom mechanism that is shown 4463 * automatically by the MapView. This is the preferred approach for 4464 * showing the zoom UI. 4465 * 4466 * @deprecated The built-in zoom mechanism is preferred, see 4467 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 4468 */ 4469 @Deprecated 4470 public View getZoomControls() { 4471 if (!getSettings().supportZoom()) { 4472 Log.w(LOGTAG, "This WebView doesn't support zoom."); 4473 return null; 4474 } 4475 if (mZoomControls == null) { 4476 mZoomControls = createZoomControls(); 4477 4478 /* 4479 * need to be set to VISIBLE first so that getMeasuredHeight() in 4480 * {@link #onSizeChanged()} can return the measured value for proper 4481 * layout. 4482 */ 4483 mZoomControls.setVisibility(View.VISIBLE); 4484 mZoomControlRunnable = new Runnable() { 4485 public void run() { 4486 4487 /* Don't dismiss the controls if the user has 4488 * focus on them. Wait and check again later. 4489 */ 4490 if (!mZoomControls.hasFocus()) { 4491 mZoomControls.hide(); 4492 } else { 4493 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4494 mPrivateHandler.postDelayed(mZoomControlRunnable, 4495 ZOOM_CONTROLS_TIMEOUT); 4496 } 4497 } 4498 }; 4499 } 4500 return mZoomControls; 4501 } 4502 4503 private ExtendedZoomControls createZoomControls() { 4504 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 4505 , null); 4506 zoomControls.setOnZoomInClickListener(new OnClickListener() { 4507 public void onClick(View v) { 4508 // reset time out 4509 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4510 mPrivateHandler.postDelayed(mZoomControlRunnable, 4511 ZOOM_CONTROLS_TIMEOUT); 4512 zoomIn(); 4513 } 4514 }); 4515 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 4516 public void onClick(View v) { 4517 // reset time out 4518 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4519 mPrivateHandler.postDelayed(mZoomControlRunnable, 4520 ZOOM_CONTROLS_TIMEOUT); 4521 zoomOut(); 4522 } 4523 }); 4524 zoomControls.setOnZoomMagnifyClickListener(new OnClickListener() { 4525 public void onClick(View v) { 4526 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4527 mPrivateHandler.postDelayed(mZoomControlRunnable, 4528 ZOOM_CONTROLS_TIMEOUT); 4529 zoomScrollOut(); 4530 } 4531 }); 4532 return zoomControls; 4533 } 4534 4535 /** 4536 * Gets the {@link ZoomButtonsController} which can be used to add 4537 * additional buttons to the zoom controls window. 4538 * 4539 * @return The instance of {@link ZoomButtonsController} used by this class, 4540 * or null if it is unavailable. 4541 * @hide 4542 */ 4543 public ZoomButtonsController getZoomButtonsController() { 4544 return mZoomButtonsController; 4545 } 4546 4547 /** 4548 * Perform zoom in in the webview 4549 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 4550 */ 4551 public boolean zoomIn() { 4552 // TODO: alternatively we can disallow this during draw history mode 4553 switchOutDrawHistory(); 4554 // Center zooming to the center of the screen. 4555 mZoomCenterX = getViewWidth() * .5f; 4556 mZoomCenterY = getViewHeight() * .5f; 4557 return zoomWithPreview(mActualScale * 1.25f); 4558 } 4559 4560 /** 4561 * Perform zoom out in the webview 4562 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 4563 */ 4564 public boolean zoomOut() { 4565 // TODO: alternatively we can disallow this during draw history mode 4566 switchOutDrawHistory(); 4567 // Center zooming to the center of the screen. 4568 mZoomCenterX = getViewWidth() * .5f; 4569 mZoomCenterY = getViewHeight() * .5f; 4570 return zoomWithPreview(mActualScale * 0.8f); 4571 } 4572 4573 private void updateSelection() { 4574 if (mNativeClass == 0) { 4575 return; 4576 } 4577 // mLastTouchX and mLastTouchY are the point in the current viewport 4578 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4579 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4580 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 4581 contentX + mNavSlop, contentY + mNavSlop); 4582 nativeSelectBestAt(rect); 4583 } 4584 4585 /** 4586 * Scroll the focused text field/area to match the WebTextView 4587 * @param x New x position of the WebTextView in view coordinates 4588 * @param y New y position of the WebTextView in view coordinates 4589 */ 4590 /*package*/ void scrollFocusedTextInput(int x, int y) { 4591 if (!inEditingMode() || mWebViewCore == null) { 4592 return; 4593 } 4594 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, viewToContent(x), 4595 viewToContent(y)); 4596 } 4597 4598 /** 4599 * Set our starting point and time for a drag from the WebTextView. 4600 */ 4601 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 4602 if (!inEditingMode()) { 4603 return; 4604 } 4605 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 4606 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 4607 mLastTouchTime = eventTime; 4608 if (!mScroller.isFinished()) { 4609 mScroller.abortAnimation(); 4610 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 4611 } 4612 mSnapScrollMode = SNAP_NONE; 4613 mVelocityTracker = VelocityTracker.obtain(); 4614 mTouchMode = TOUCH_DRAG_START_MODE; 4615 } 4616 4617 /** 4618 * Given a motion event from the WebTextView, set its location to our 4619 * coordinates, and handle the event. 4620 */ 4621 /*package*/ boolean textFieldDrag(MotionEvent event) { 4622 if (!inEditingMode()) { 4623 return false; 4624 } 4625 mDragFromTextInput = true; 4626 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 4627 (float) (mWebTextView.getTop() - mScrollY)); 4628 boolean result = onTouchEvent(event); 4629 mDragFromTextInput = false; 4630 return result; 4631 } 4632 4633 /*package*/ void shortPressOnTextField() { 4634 if (inEditingMode()) { 4635 View v = mWebTextView; 4636 int x = viewToContent((v.getLeft() + v.getRight()) >> 1); 4637 int y = viewToContent((v.getTop() + v.getBottom()) >> 1); 4638 nativeMotionUp(x, y, mNavSlop); 4639 } 4640 } 4641 4642 private void doShortPress() { 4643 if (mNativeClass == 0) { 4644 return; 4645 } 4646 switchOutDrawHistory(); 4647 // mLastTouchX and mLastTouchY are the point in the current viewport 4648 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4649 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4650 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 4651 if (mLogEvent) { 4652 Checkin.updateStats(mContext.getContentResolver(), 4653 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 4654 } 4655 } 4656 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 4657 playSoundEffect(SoundEffectConstants.CLICK); 4658 } 4659 } 4660 4661 private void doDoubleTap() { 4662 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 4663 return; 4664 } 4665 mZoomCenterX = mLastTouchX; 4666 mZoomCenterY = mLastTouchY; 4667 mInZoomOverview = !mInZoomOverview; 4668 if (mInZoomOverview) { 4669 float newScale = (float) getViewWidth() 4670 / (mZoomOverviewWidth > 0 ? mZoomOverviewWidth 4671 : mContentWidth); 4672 if (Math.abs(newScale - mActualScale) < 0.01) { 4673 mInZoomOverview = !mInZoomOverview; 4674 // as it is already full screen, do nothing. 4675 return; 4676 } 4677 if (getSettings().getBuiltInZoomControls()) { 4678 if (mZoomButtonsController.isVisible()) { 4679 mZoomButtonsController.setVisible(false); 4680 } 4681 } else { 4682 if (mZoomControlRunnable != null) { 4683 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4684 } 4685 if (mZoomControls != null) { 4686 mZoomControls.hide(); 4687 } 4688 } 4689 zoomWithPreview(newScale); 4690 } else { 4691 // mLastTouchX and mLastTouchY are the point in the current viewport 4692 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4693 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4694 int left = nativeGetBlockLeftEdge(contentX, contentY, mActualScale); 4695 if (left != NO_LEFTEDGE) { 4696 // add a 5pt padding to the left edge. Re-calculate the zoom 4697 // center so that the new scroll x will be on the left edge. 4698 mZoomCenterX = left < 5 ? 0 : (left - 5) * mLastScale 4699 * mActualScale / (mLastScale - mActualScale); 4700 } 4701 zoomWithPreview(mLastScale); 4702 } 4703 } 4704 4705 // Called by JNI to handle a touch on a node representing an email address, 4706 // address, or phone number 4707 private void overrideLoading(String url) { 4708 mCallbackProxy.uiOverrideUrlLoading(url); 4709 } 4710 4711 // called by JNI 4712 private void sendPluginState(int state) { 4713 WebViewCore.PluginStateData psd = new WebViewCore.PluginStateData(); 4714 psd.mFrame = nativeCursorFramePointer(); 4715 psd.mNode = nativeCursorNodePointer(); 4716 psd.mState = state; 4717 mWebViewCore.sendMessage(EventHub.PLUGIN_STATE, psd); 4718 } 4719 4720 @Override 4721 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 4722 boolean result = false; 4723 if (inEditingMode()) { 4724 result = mWebTextView.requestFocus(direction, 4725 previouslyFocusedRect); 4726 } else { 4727 result = super.requestFocus(direction, previouslyFocusedRect); 4728 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 4729 // For cases such as GMail, where we gain focus from a direction, 4730 // we want to move to the first available link. 4731 // FIXME: If there are no visible links, we may not want to 4732 int fakeKeyDirection = 0; 4733 switch(direction) { 4734 case View.FOCUS_UP: 4735 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 4736 break; 4737 case View.FOCUS_DOWN: 4738 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 4739 break; 4740 case View.FOCUS_LEFT: 4741 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 4742 break; 4743 case View.FOCUS_RIGHT: 4744 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 4745 break; 4746 default: 4747 return result; 4748 } 4749 if (mNativeClass != 0 && !nativeHasCursorNode()) { 4750 navHandledKey(fakeKeyDirection, 1, true, 0, true); 4751 } 4752 } 4753 } 4754 return result; 4755 } 4756 4757 @Override 4758 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4759 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 4760 4761 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 4762 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 4763 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 4764 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 4765 4766 int measuredHeight = heightSize; 4767 int measuredWidth = widthSize; 4768 4769 // Grab the content size from WebViewCore. 4770 int contentHeight = mContentHeight; 4771 int contentWidth = mContentWidth; 4772 4773// Log.d(LOGTAG, "------- measure " + heightMode); 4774 4775 if (heightMode != MeasureSpec.EXACTLY) { 4776 mHeightCanMeasure = true; 4777 measuredHeight = contentHeight; 4778 if (heightMode == MeasureSpec.AT_MOST) { 4779 // If we are larger than the AT_MOST height, then our height can 4780 // no longer be measured and we should scroll internally. 4781 if (measuredHeight > heightSize) { 4782 measuredHeight = heightSize; 4783 mHeightCanMeasure = false; 4784 } 4785 } 4786 } else { 4787 mHeightCanMeasure = false; 4788 } 4789 if (mNativeClass != 0) { 4790 nativeSetHeightCanMeasure(mHeightCanMeasure); 4791 } 4792 // For the width, always use the given size unless unspecified. 4793 if (widthMode == MeasureSpec.UNSPECIFIED) { 4794 mWidthCanMeasure = true; 4795 measuredWidth = contentWidth; 4796 } else { 4797 mWidthCanMeasure = false; 4798 } 4799 4800 synchronized (this) { 4801 setMeasuredDimension(measuredWidth, measuredHeight); 4802 } 4803 } 4804 4805 @Override 4806 public boolean requestChildRectangleOnScreen(View child, 4807 Rect rect, 4808 boolean immediate) { 4809 rect.offset(child.getLeft() - child.getScrollX(), 4810 child.getTop() - child.getScrollY()); 4811 4812 int height = getHeight() - getHorizontalScrollbarHeight(); 4813 int screenTop = mScrollY; 4814 int screenBottom = screenTop + height; 4815 4816 int scrollYDelta = 0; 4817 4818 if (rect.bottom > screenBottom) { 4819 int oneThirdOfScreenHeight = height / 3; 4820 if (rect.height() > 2 * oneThirdOfScreenHeight) { 4821 // If the rectangle is too tall to fit in the bottom two thirds 4822 // of the screen, place it at the top. 4823 scrollYDelta = rect.top - screenTop; 4824 } else { 4825 // If the rectangle will still fit on screen, we want its 4826 // top to be in the top third of the screen. 4827 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 4828 } 4829 } else if (rect.top < screenTop) { 4830 scrollYDelta = rect.top - screenTop; 4831 } 4832 4833 int width = getWidth() - getVerticalScrollbarWidth(); 4834 int screenLeft = mScrollX; 4835 int screenRight = screenLeft + width; 4836 4837 int scrollXDelta = 0; 4838 4839 if (rect.right > screenRight && rect.left > screenLeft) { 4840 if (rect.width() > width) { 4841 scrollXDelta += (rect.left - screenLeft); 4842 } else { 4843 scrollXDelta += (rect.right - screenRight); 4844 } 4845 } else if (rect.left < screenLeft) { 4846 scrollXDelta -= (screenLeft - rect.left); 4847 } 4848 4849 if ((scrollYDelta | scrollXDelta) != 0) { 4850 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 4851 } 4852 4853 return false; 4854 } 4855 4856 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 4857 String replace, int newStart, int newEnd) { 4858 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 4859 arg.mReplace = replace; 4860 arg.mNewStart = newStart; 4861 arg.mNewEnd = newEnd; 4862 mTextGeneration++; 4863 arg.mTextGeneration = mTextGeneration; 4864 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 4865 } 4866 4867 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 4868 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 4869 mWebViewCore.sendMessage(EventHub.CLICK); 4870 } 4871 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 4872 arg.mEvent = event; 4873 arg.mCurrentText = currentText; 4874 // Increase our text generation number, and pass it to webcore thread 4875 mTextGeneration++; 4876 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 4877 // WebKit's document state is not saved until about to leave the page. 4878 // To make sure the host application, like Browser, has the up to date 4879 // document state when it goes to background, we force to save the 4880 // document state. 4881 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 4882 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 4883 cursorData(), 1000); 4884 } 4885 4886 /* package */ WebViewCore getWebViewCore() { 4887 return mWebViewCore; 4888 } 4889 4890 //------------------------------------------------------------------------- 4891 // Methods can be called from a separate thread, like WebViewCore 4892 // If it needs to call the View system, it has to send message. 4893 //------------------------------------------------------------------------- 4894 4895 /** 4896 * General handler to receive message coming from webkit thread 4897 */ 4898 class PrivateHandler extends Handler { 4899 @Override 4900 public void handleMessage(Message msg) { 4901 if (DebugFlags.WEB_VIEW) { 4902 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 4903 > INVAL_RECT_MSG_ID ? Integer.toString(msg.what) 4904 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 4905 } 4906 switch (msg.what) { 4907 case REMEMBER_PASSWORD: { 4908 mDatabase.setUsernamePassword( 4909 msg.getData().getString("host"), 4910 msg.getData().getString("username"), 4911 msg.getData().getString("password")); 4912 ((Message) msg.obj).sendToTarget(); 4913 break; 4914 } 4915 case NEVER_REMEMBER_PASSWORD: { 4916 mDatabase.setUsernamePassword( 4917 msg.getData().getString("host"), null, null); 4918 ((Message) msg.obj).sendToTarget(); 4919 break; 4920 } 4921 case SWITCH_TO_SHORTPRESS: { 4922 if (mTouchMode == TOUCH_INIT_MODE) { 4923 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 4924 updateSelection(); 4925 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4926 mTouchMode = TOUCH_DONE_MODE; 4927 } 4928 break; 4929 } 4930 case SWITCH_TO_LONGPRESS: { 4931 if (!mPreventDrag) { 4932 mTouchMode = TOUCH_DONE_MODE; 4933 performLongClick(); 4934 rebuildWebTextView(); 4935 } 4936 break; 4937 } 4938 case RELEASE_SINGLE_TAP: { 4939 if (!mPreventDrag) { 4940 mTouchMode = TOUCH_DONE_MODE; 4941 doShortPress(); 4942 } 4943 break; 4944 } 4945 case SWITCH_TO_CLICK: 4946 // The user clicked with the trackball, and did not click a 4947 // second time, so perform the action of a trackball single 4948 // click 4949 mTouchMode = TOUCH_DONE_MODE; 4950 Rect visibleRect = sendOurVisibleRect(); 4951 // Note that sendOurVisibleRect calls viewToContent, so the 4952 // coordinates should be in content coordinates. 4953 if (!nativeCursorIntersects(visibleRect)) { 4954 break; 4955 } 4956 nativeSetFollowedLink(true); 4957 nativeUpdatePluginReceivesEvents(); 4958 WebViewCore.CursorData data = cursorData(); 4959 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4960 playSoundEffect(SoundEffectConstants.CLICK); 4961 boolean isTextInput = nativeCursorIsTextInput(); 4962 if (isTextInput || !mCallbackProxy.uiOverrideUrlLoading( 4963 nativeCursorText())) { 4964 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4965 nativeCursorNodePointer()); 4966 } 4967 if (isTextInput) { 4968 rebuildWebTextView(); 4969 } 4970 break; 4971 case SCROLL_BY_MSG_ID: 4972 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 4973 break; 4974 case SYNC_SCROLL_TO_MSG_ID: 4975 if (mUserScroll) { 4976 // if user has scrolled explicitly, don't sync the 4977 // scroll position any more 4978 mUserScroll = false; 4979 break; 4980 } 4981 // fall through 4982 case SCROLL_TO_MSG_ID: 4983 if (setContentScrollTo(msg.arg1, msg.arg2)) { 4984 // if we can't scroll to the exact position due to pin, 4985 // send a message to WebCore to re-scroll when we get a 4986 // new picture 4987 mUserScroll = false; 4988 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 4989 msg.arg1, msg.arg2); 4990 } 4991 break; 4992 case SPAWN_SCROLL_TO_MSG_ID: 4993 spawnContentScrollTo(msg.arg1, msg.arg2); 4994 break; 4995 case NEW_PICTURE_MSG_ID: 4996 // called for new content 4997 final int viewWidth = getViewWidth(); 4998 final WebViewCore.DrawData draw = 4999 (WebViewCore.DrawData) msg.obj; 5000 final Point viewSize = draw.mViewPoint; 5001 boolean useWideViewport = 5002 mWebViewCore.getSettings().getUseWideViewPort(); 5003 WebViewCore.RestoreState restoreState = draw.mRestoreState; 5004 if (restoreState != null) { 5005 mInZoomOverview = false; 5006 mLastScale = restoreState.mTextWrapScale; 5007 if (restoreState.mMinScale == 0) { 5008 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 5009 mMinZoomScaleFixed = false; 5010 } else { 5011 mMinZoomScale = restoreState.mMinScale; 5012 mMinZoomScaleFixed = true; 5013 } 5014 if (restoreState.mMaxScale == 0) { 5015 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 5016 } else { 5017 mMaxZoomScale = restoreState.mMaxScale; 5018 } 5019 if (useWideViewport && restoreState.mViewScale == 0) { 5020 mInZoomOverview = ENABLE_DOUBLETAP_ZOOM; 5021 } 5022 setNewZoomScale(mLastScale, false); 5023 setContentScrollTo(restoreState.mScrollX, 5024 restoreState.mScrollY); 5025 // As we are on a new page, remove the WebTextView. This 5026 // is necessary for page loads driven by webkit, and in 5027 // particular when the user was on a password field, so 5028 // the WebTextView was visible. 5029 clearTextEntry(); 5030 } 5031 // We update the layout (i.e. request a layout from the 5032 // view system) if the last view size that we sent to 5033 // WebCore matches the view size of the picture we just 5034 // received in the fixed dimension. 5035 final boolean updateLayout = viewSize.x == mLastWidthSent 5036 && viewSize.y == mLastHeightSent; 5037 recordNewContentSize(draw.mWidthHeight.x, 5038 draw.mWidthHeight.y, updateLayout); 5039 if (DebugFlags.WEB_VIEW) { 5040 Rect b = draw.mInvalRegion.getBounds(); 5041 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5042 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5043 } 5044 invalidate(contentToView(draw.mInvalRegion.getBounds())); 5045 if (mPictureListener != null) { 5046 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5047 } 5048 if (useWideViewport) { 5049 mZoomOverviewWidth = Math.max(draw.mMinPrefWidth, 5050 draw.mViewPoint.x); 5051 } 5052 if (!mMinZoomScaleFixed) { 5053 mMinZoomScale = (float) viewWidth 5054 / Math.max(ZOOM_OUT_WIDTH, 5055 mZoomOverviewWidth > 0 ? mZoomOverviewWidth 5056 : mContentWidth); 5057 } 5058 if (!mDrawHistory && mInZoomOverview) { 5059 // fit the content width to the current view. Ignore 5060 // the rounding error case. 5061 if (Math.abs((viewWidth * mInvActualScale) 5062 - mZoomOverviewWidth) > 1) { 5063 zoomWithPreview((float) viewWidth 5064 / mZoomOverviewWidth); 5065 } 5066 } 5067 break; 5068 case WEBCORE_INITIALIZED_MSG_ID: 5069 // nativeCreate sets mNativeClass to a non-zero value 5070 nativeCreate(msg.arg1); 5071 break; 5072 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5073 // Make sure that the textfield is currently focused 5074 // and representing the same node as the pointer. 5075 if (inEditingMode() && 5076 mWebTextView.isSameTextField(msg.arg1)) { 5077 if (msg.getData().getBoolean("password")) { 5078 Spannable text = (Spannable) mWebTextView.getText(); 5079 int start = Selection.getSelectionStart(text); 5080 int end = Selection.getSelectionEnd(text); 5081 mWebTextView.setInPassword(true); 5082 // Restore the selection, which may have been 5083 // ruined by setInPassword. 5084 Spannable pword = 5085 (Spannable) mWebTextView.getText(); 5086 Selection.setSelection(pword, start, end); 5087 // If the text entry has created more events, ignore 5088 // this one. 5089 } else if (msg.arg2 == mTextGeneration) { 5090 mWebTextView.setTextAndKeepSelection( 5091 (String) msg.obj); 5092 } 5093 } 5094 break; 5095 case MOVE_OUT_OF_PLUGIN: 5096 if (nativePluginEatsNavKey()) { 5097 navHandledKey(msg.arg1, 1, false, 0, true); 5098 } 5099 break; 5100 case UPDATE_TEXT_ENTRY_MSG_ID: 5101 // this is sent after finishing resize in WebViewCore. Make 5102 // sure the text edit box is still on the screen. 5103 if (inEditingMode() && nativeCursorIsTextInput()) { 5104 mWebTextView.bringIntoView(); 5105 rebuildWebTextView(); 5106 } 5107 break; 5108 case CLEAR_TEXT_ENTRY: 5109 clearTextEntry(); 5110 break; 5111 case INVAL_RECT_MSG_ID: { 5112 Rect r = (Rect)msg.obj; 5113 if (r == null) { 5114 invalidate(); 5115 } else { 5116 // we need to scale r from content into view coords, 5117 // which viewInvalidate() does for us 5118 viewInvalidate(r.left, r.top, r.right, r.bottom); 5119 } 5120 break; 5121 } 5122 case REQUEST_FORM_DATA: 5123 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5124 if (mWebTextView.isSameTextField(msg.arg1)) { 5125 mWebTextView.setAdapterCustom(adapter); 5126 } 5127 break; 5128 case UPDATE_CLIPBOARD: 5129 String str = (String) msg.obj; 5130 if (DebugFlags.WEB_VIEW) { 5131 Log.v(LOGTAG, "UPDATE_CLIPBOARD " + str); 5132 } 5133 try { 5134 IClipboard clip = IClipboard.Stub.asInterface( 5135 ServiceManager.getService("clipboard")); 5136 clip.setClipboardText(str); 5137 } catch (android.os.RemoteException e) { 5138 Log.e(LOGTAG, "Clipboard failed", e); 5139 } 5140 break; 5141 case RESUME_WEBCORE_UPDATE: 5142 WebViewCore.resumeUpdate(mWebViewCore); 5143 break; 5144 5145 case LONG_PRESS_CENTER: 5146 // as this is shared by keydown and trackballdown, reset all 5147 // the states 5148 mGotCenterDown = false; 5149 mTrackballDown = false; 5150 // LONG_PRESS_CENTER is sent as a delayed message. If we 5151 // switch to windows overview, the WebView will be 5152 // temporarily removed from the view system. In that case, 5153 // do nothing. 5154 if (getParent() != null) { 5155 performLongClick(); 5156 } 5157 break; 5158 5159 case WEBCORE_NEED_TOUCH_EVENTS: 5160 mForwardTouchEvents = (msg.arg1 != 0); 5161 break; 5162 5163 case PREVENT_TOUCH_ID: 5164 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5165 mPreventDrag = msg.arg2 == 1; 5166 if (mPreventDrag) { 5167 mTouchMode = TOUCH_DONE_MODE; 5168 } 5169 } 5170 break; 5171 5172 case REQUEST_KEYBOARD: 5173 if (msg.arg1 == 0) { 5174 hideSoftKeyboard(); 5175 } else { 5176 displaySoftKeyboard(false); 5177 } 5178 break; 5179 5180 default: 5181 super.handleMessage(msg); 5182 break; 5183 } 5184 } 5185 } 5186 5187 // Class used to use a dropdown for a <select> element 5188 private class InvokeListBox implements Runnable { 5189 // Whether the listbox allows multiple selection. 5190 private boolean mMultiple; 5191 // Passed in to a list with multiple selection to tell 5192 // which items are selected. 5193 private int[] mSelectedArray; 5194 // Passed in to a list with single selection to tell 5195 // where the initial selection is. 5196 private int mSelection; 5197 5198 private Container[] mContainers; 5199 5200 // Need these to provide stable ids to my ArrayAdapter, 5201 // which normally does not have stable ids. (Bug 1250098) 5202 private class Container extends Object { 5203 String mString; 5204 boolean mEnabled; 5205 int mId; 5206 5207 public String toString() { 5208 return mString; 5209 } 5210 } 5211 5212 /** 5213 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 5214 * and allow filtering. 5215 */ 5216 private class MyArrayListAdapter extends ArrayAdapter<Container> { 5217 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 5218 super(context, 5219 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 5220 com.android.internal.R.layout.select_dialog_singlechoice, 5221 objects); 5222 } 5223 5224 @Override 5225 public boolean hasStableIds() { 5226 // AdapterView's onChanged method uses this to determine whether 5227 // to restore the old state. Return false so that the old (out 5228 // of date) state does not replace the new, valid state. 5229 return false; 5230 } 5231 5232 private Container item(int position) { 5233 if (position < 0 || position >= getCount()) { 5234 return null; 5235 } 5236 return (Container) getItem(position); 5237 } 5238 5239 @Override 5240 public long getItemId(int position) { 5241 Container item = item(position); 5242 if (item == null) { 5243 return -1; 5244 } 5245 return item.mId; 5246 } 5247 5248 @Override 5249 public boolean areAllItemsEnabled() { 5250 return false; 5251 } 5252 5253 @Override 5254 public boolean isEnabled(int position) { 5255 Container item = item(position); 5256 if (item == null) { 5257 return false; 5258 } 5259 return item.mEnabled; 5260 } 5261 } 5262 5263 private InvokeListBox(String[] array, 5264 boolean[] enabled, int[] selected) { 5265 mMultiple = true; 5266 mSelectedArray = selected; 5267 5268 int length = array.length; 5269 mContainers = new Container[length]; 5270 for (int i = 0; i < length; i++) { 5271 mContainers[i] = new Container(); 5272 mContainers[i].mString = array[i]; 5273 mContainers[i].mEnabled = enabled[i]; 5274 mContainers[i].mId = i; 5275 } 5276 } 5277 5278 private InvokeListBox(String[] array, boolean[] enabled, int 5279 selection) { 5280 mSelection = selection; 5281 mMultiple = false; 5282 5283 int length = array.length; 5284 mContainers = new Container[length]; 5285 for (int i = 0; i < length; i++) { 5286 mContainers[i] = new Container(); 5287 mContainers[i].mString = array[i]; 5288 mContainers[i].mEnabled = enabled[i]; 5289 mContainers[i].mId = i; 5290 } 5291 } 5292 5293 /* 5294 * Whenever the data set changes due to filtering, this class ensures 5295 * that the checked item remains checked. 5296 */ 5297 private class SingleDataSetObserver extends DataSetObserver { 5298 private long mCheckedId; 5299 private ListView mListView; 5300 private Adapter mAdapter; 5301 5302 /* 5303 * Create a new observer. 5304 * @param id The ID of the item to keep checked. 5305 * @param l ListView for getting and clearing the checked states 5306 * @param a Adapter for getting the IDs 5307 */ 5308 public SingleDataSetObserver(long id, ListView l, Adapter a) { 5309 mCheckedId = id; 5310 mListView = l; 5311 mAdapter = a; 5312 } 5313 5314 public void onChanged() { 5315 // The filter may have changed which item is checked. Find the 5316 // item that the ListView thinks is checked. 5317 int position = mListView.getCheckedItemPosition(); 5318 long id = mAdapter.getItemId(position); 5319 if (mCheckedId != id) { 5320 // Clear the ListView's idea of the checked item, since 5321 // it is incorrect 5322 mListView.clearChoices(); 5323 // Search for mCheckedId. If it is in the filtered list, 5324 // mark it as checked 5325 int count = mAdapter.getCount(); 5326 for (int i = 0; i < count; i++) { 5327 if (mAdapter.getItemId(i) == mCheckedId) { 5328 mListView.setItemChecked(i, true); 5329 break; 5330 } 5331 } 5332 } 5333 } 5334 5335 public void onInvalidate() {} 5336 } 5337 5338 public void run() { 5339 final ListView listView = (ListView) LayoutInflater.from(mContext) 5340 .inflate(com.android.internal.R.layout.select_dialog, null); 5341 final MyArrayListAdapter adapter = new 5342 MyArrayListAdapter(mContext, mContainers, mMultiple); 5343 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 5344 .setView(listView).setCancelable(true) 5345 .setInverseBackgroundForced(true); 5346 5347 if (mMultiple) { 5348 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 5349 public void onClick(DialogInterface dialog, int which) { 5350 mWebViewCore.sendMessage( 5351 EventHub.LISTBOX_CHOICES, 5352 adapter.getCount(), 0, 5353 listView.getCheckedItemPositions()); 5354 }}); 5355 b.setNegativeButton(android.R.string.cancel, 5356 new DialogInterface.OnClickListener() { 5357 public void onClick(DialogInterface dialog, int which) { 5358 mWebViewCore.sendMessage( 5359 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5360 }}); 5361 } 5362 final AlertDialog dialog = b.create(); 5363 listView.setAdapter(adapter); 5364 listView.setFocusableInTouchMode(true); 5365 // There is a bug (1250103) where the checks in a ListView with 5366 // multiple items selected are associated with the positions, not 5367 // the ids, so the items do not properly retain their checks when 5368 // filtered. Do not allow filtering on multiple lists until 5369 // that bug is fixed. 5370 5371 listView.setTextFilterEnabled(!mMultiple); 5372 if (mMultiple) { 5373 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 5374 int length = mSelectedArray.length; 5375 for (int i = 0; i < length; i++) { 5376 listView.setItemChecked(mSelectedArray[i], true); 5377 } 5378 } else { 5379 listView.setOnItemClickListener(new OnItemClickListener() { 5380 public void onItemClick(AdapterView parent, View v, 5381 int position, long id) { 5382 mWebViewCore.sendMessage( 5383 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 5384 dialog.dismiss(); 5385 } 5386 }); 5387 if (mSelection != -1) { 5388 listView.setSelection(mSelection); 5389 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 5390 listView.setItemChecked(mSelection, true); 5391 DataSetObserver observer = new SingleDataSetObserver( 5392 adapter.getItemId(mSelection), listView, adapter); 5393 adapter.registerDataSetObserver(observer); 5394 } 5395 } 5396 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 5397 public void onCancel(DialogInterface dialog) { 5398 mWebViewCore.sendMessage( 5399 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5400 } 5401 }); 5402 dialog.show(); 5403 } 5404 } 5405 5406 /* 5407 * Request a dropdown menu for a listbox with multiple selection. 5408 * 5409 * @param array Labels for the listbox. 5410 * @param enabledArray Which positions are enabled. 5411 * @param selectedArray Which positions are initally selected. 5412 */ 5413 void requestListBox(String[] array, boolean[]enabledArray, int[] 5414 selectedArray) { 5415 mPrivateHandler.post( 5416 new InvokeListBox(array, enabledArray, selectedArray)); 5417 } 5418 5419 /* 5420 * Request a dropdown menu for a listbox with single selection or a single 5421 * <select> element. 5422 * 5423 * @param array Labels for the listbox. 5424 * @param enabledArray Which positions are enabled. 5425 * @param selection Which position is initally selected. 5426 */ 5427 void requestListBox(String[] array, boolean[]enabledArray, int selection) { 5428 mPrivateHandler.post( 5429 new InvokeListBox(array, enabledArray, selection)); 5430 } 5431 5432 // called by JNI 5433 private void sendMoveMouse(int frame, int node, int x, int y) { 5434 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 5435 new WebViewCore.CursorData(frame, node, x, y)); 5436 } 5437 5438 /* 5439 * Send a mouse move event to the webcore thread. 5440 * 5441 * @param removeFocus Pass true if the "mouse" cursor is now over a node 5442 * which wants key events, but it is not the focus. This 5443 * will make the visual appear as though nothing is in 5444 * focus. Remove the WebTextView, if present, and stop 5445 * drawing the blinking caret. 5446 * called by JNI 5447 */ 5448 private void sendMoveMouseIfLatest(boolean removeFocus) { 5449 if (removeFocus) { 5450 clearTextEntry(); 5451 setFocusControllerInactive(); 5452 } 5453 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 5454 cursorData()); 5455 } 5456 5457 // called by JNI 5458 private void sendMotionUp(int touchGeneration, 5459 int frame, int node, int x, int y, int size) { 5460 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5461 touchUpData.mMoveGeneration = touchGeneration; 5462 touchUpData.mSize = size; 5463 touchUpData.mFrame = frame; 5464 touchUpData.mNode = node; 5465 touchUpData.mX = x; 5466 touchUpData.mY = y; 5467 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5468 } 5469 5470 5471 private int getScaledMaxXScroll() { 5472 int width; 5473 if (mHeightCanMeasure == false) { 5474 width = getViewWidth() / 4; 5475 } else { 5476 Rect visRect = new Rect(); 5477 calcOurVisibleRect(visRect); 5478 width = visRect.width() / 2; 5479 } 5480 // FIXME the divisor should be retrieved from somewhere 5481 return viewToContent(width); 5482 } 5483 5484 private int getScaledMaxYScroll() { 5485 int height; 5486 if (mHeightCanMeasure == false) { 5487 height = getViewHeight() / 4; 5488 } else { 5489 Rect visRect = new Rect(); 5490 calcOurVisibleRect(visRect); 5491 height = visRect.height() / 2; 5492 } 5493 // FIXME the divisor should be retrieved from somewhere 5494 // the closest thing today is hard-coded into ScrollView.java 5495 // (from ScrollView.java, line 363) int maxJump = height/2; 5496 return viewToContent(height); 5497 } 5498 5499 /** 5500 * Called by JNI to invalidate view 5501 */ 5502 private void viewInvalidate() { 5503 invalidate(); 5504 } 5505 5506 // return true if the key was handled 5507 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 5508 long time, boolean ignorePlugin) { 5509 if (mNativeClass == 0) { 5510 return false; 5511 } 5512 if (ignorePlugin == false && nativePluginEatsNavKey()) { 5513 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 5514 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 5515 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 5516 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 5517 , 0, 0, 0); 5518 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5519 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5520 return true; 5521 } 5522 mLastCursorTime = time; 5523 mLastCursorBounds = nativeGetCursorRingBounds(); 5524 boolean keyHandled 5525 = nativeMoveCursor(keyCode, count, noScroll) == false; 5526 if (DebugFlags.WEB_VIEW) { 5527 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 5528 + " mLastCursorTime=" + mLastCursorTime 5529 + " handled=" + keyHandled); 5530 } 5531 if (keyHandled == false || mHeightCanMeasure == false) { 5532 return keyHandled; 5533 } 5534 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 5535 if (contentCursorRingBounds.isEmpty()) return keyHandled; 5536 Rect viewCursorRingBounds = contentToView(contentCursorRingBounds); 5537 Rect visRect = new Rect(); 5538 calcOurVisibleRect(visRect); 5539 Rect outset = new Rect(visRect); 5540 int maxXScroll = visRect.width() / 2; 5541 int maxYScroll = visRect.height() / 2; 5542 outset.inset(-maxXScroll, -maxYScroll); 5543 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 5544 return keyHandled; 5545 } 5546 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 5547 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 5548 maxXScroll); 5549 if (maxH > 0) { 5550 pinScrollBy(maxH, 0, true, 0); 5551 } else { 5552 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 5553 -maxXScroll); 5554 if (maxH < 0) { 5555 pinScrollBy(maxH, 0, true, 0); 5556 } 5557 } 5558 if (mLastCursorBounds.isEmpty()) return keyHandled; 5559 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 5560 return keyHandled; 5561 } 5562 if (DebugFlags.WEB_VIEW) { 5563 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 5564 + contentCursorRingBounds); 5565 } 5566 requestRectangleOnScreen(viewCursorRingBounds); 5567 mUserScroll = true; 5568 return keyHandled; 5569 } 5570 5571 /** 5572 * Set the background color. It's white by default. Pass 5573 * zero to make the view transparent. 5574 * @param color the ARGB color described by Color.java 5575 */ 5576 public void setBackgroundColor(int color) { 5577 mBackgroundColor = color; 5578 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 5579 } 5580 5581 public void debugDump() { 5582 nativeDebugDump(); 5583 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 5584 } 5585 5586 /** 5587 * Update our cache with updatedText. 5588 * @param updatedText The new text to put in our cache. 5589 */ 5590 /* package */ void updateCachedTextfield(String updatedText) { 5591 // Also place our generation number so that when we look at the cache 5592 // we recognize that it is up to date. 5593 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 5594 } 5595 5596 /* package */ native void nativeClearCursor(); 5597 private native void nativeCreate(int ptr); 5598 private native int nativeCursorFramePointer(); 5599 private native Rect nativeCursorNodeBounds(); 5600 /* package */ native int nativeCursorNodePointer(); 5601 /* package */ native boolean nativeCursorMatchesFocus(); 5602 private native boolean nativeCursorIntersects(Rect visibleRect); 5603 private native boolean nativeCursorIsAnchor(); 5604 private native boolean nativeCursorIsPlugin(); 5605 private native boolean nativeCursorIsTextInput(); 5606 private native Point nativeCursorPosition(); 5607 private native String nativeCursorText(); 5608 /** 5609 * Returns true if the native cursor node says it wants to handle key events 5610 * (ala plugins). This can only be called if mNativeClass is non-zero! 5611 */ 5612 private native boolean nativeCursorWantsKeyEvents(); 5613 private native void nativeDebugDump(); 5614 private native void nativeDestroy(); 5615 private native void nativeDrawCursorRing(Canvas content); 5616 private native void nativeDrawMatches(Canvas canvas); 5617 private native void nativeDrawSelection(Canvas content 5618 , int x, int y, boolean extendSelection); 5619 private native void nativeDrawSelectionRegion(Canvas content); 5620 private native void nativeDumpDisplayTree(String urlOrNull); 5621 private native int nativeFindAll(String findLower, String findUpper); 5622 private native void nativeFindNext(boolean forward); 5623 private native boolean nativeFocusCandidateIsPassword(); 5624 private native boolean nativeFocusCandidateIsRtlText(); 5625 private native boolean nativeFocusCandidateIsTextField(); 5626 private native boolean nativeFocusCandidateIsTextInput(); 5627 private native int nativeFocusCandidateMaxLength(); 5628 /* package */ native String nativeFocusCandidateName(); 5629 private native Rect nativeFocusCandidateNodeBounds(); 5630 /* package */ native int nativeFocusCandidatePointer(); 5631 private native String nativeFocusCandidateText(); 5632 private native int nativeFocusCandidateTextSize(); 5633 /* package */ native int nativeFocusNodePointer(); 5634 private native Rect nativeGetCursorRingBounds(); 5635 private native Region nativeGetSelection(); 5636 private native boolean nativeHasCursorNode(); 5637 private native boolean nativeHasFocusNode(); 5638 private native void nativeHideCursor(); 5639 private native String nativeImageURI(int x, int y); 5640 private native void nativeInstrumentReport(); 5641 /* package */ native void nativeMoveCursorToNextTextInput(); 5642 // return true if the page has been scrolled 5643 private native boolean nativeMotionUp(int x, int y, int slop); 5644 // returns false if it handled the key 5645 private native boolean nativeMoveCursor(int keyCode, int count, 5646 boolean noScroll); 5647 private native int nativeMoveGeneration(); 5648 private native void nativeMoveSelection(int x, int y, 5649 boolean extendSelection); 5650 private native boolean nativePluginEatsNavKey(); 5651 // Like many other of our native methods, you must make sure that 5652 // mNativeClass is not null before calling this method. 5653 private native void nativeRecordButtons(boolean focused, 5654 boolean pressed, boolean invalidate); 5655 private native void nativeSelectBestAt(Rect rect); 5656 private native void nativeSetFindIsDown(); 5657 private native void nativeSetFollowedLink(boolean followed); 5658 private native void nativeSetHeightCanMeasure(boolean measure); 5659 // Returns a value corresponding to CachedFrame::ImeAction 5660 /* package */ native int nativeTextFieldAction(); 5661 private native int nativeTextGeneration(); 5662 // Never call this version except by updateCachedTextfield(String) - 5663 // we always want to pass in our generation number. 5664 private native void nativeUpdateCachedTextfield(String updatedText, 5665 int generation); 5666 private native void nativeUpdatePluginReceivesEvents(); 5667 // return NO_LEFTEDGE means failure. 5668 private static final int NO_LEFTEDGE = -1; 5669 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 5670} 5671