WebView.java revision ef347ef9107a8ca6ab85029528e2c1518440b2c3
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 progress for the current page. 2007 * @return The progress for the current page between 0 and 100. 2008 */ 2009 public int getProgress() { 2010 return mCallbackProxy.getProgress(); 2011 } 2012 2013 /** 2014 * @return the height of the HTML content. 2015 */ 2016 public int getContentHeight() { 2017 return mContentHeight; 2018 } 2019 2020 /** 2021 * Pause all layout, parsing, and javascript timers for all webviews. This 2022 * is a global requests, not restricted to just this webview. This can be 2023 * useful if the application has been paused. 2024 */ 2025 public void pauseTimers() { 2026 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2027 } 2028 2029 /** 2030 * Resume all layout, parsing, and javascript timers for all webviews. 2031 * This will resume dispatching all timers. 2032 */ 2033 public void resumeTimers() { 2034 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2035 } 2036 2037 /** 2038 * Call this to pause any extra processing associated with this view and 2039 * its associated DOM/plugins/javascript/etc. For example, if the view is 2040 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2041 * network traffic. When the view is again "active", call onResume(). 2042 * 2043 * Note that this differs from pauseTimers(), which affects all views/DOMs 2044 * @hide 2045 */ 2046 public void onPause() { 2047 if (!mIsPaused) { 2048 mIsPaused = true; 2049 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2050 } 2051 } 2052 2053 /** 2054 * Call this to balanace a previous call to onPause() 2055 * @hide 2056 */ 2057 public void onResume() { 2058 if (mIsPaused) { 2059 mIsPaused = false; 2060 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2061 } 2062 } 2063 2064 /** 2065 * Returns true if the view is paused, meaning onPause() was called. Calling 2066 * onResume() sets the paused state back to false. 2067 * @hide 2068 */ 2069 public boolean isPaused() { 2070 return mIsPaused; 2071 } 2072 2073 /** 2074 * Call this to inform the view that memory is low so that it can 2075 * free any available memory. 2076 * @hide 2077 */ 2078 public void freeMemory() { 2079 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2080 } 2081 2082 /** 2083 * Clear the resource cache. Note that the cache is per-application, so 2084 * this will clear the cache for all WebViews used. 2085 * 2086 * @param includeDiskFiles If false, only the RAM cache is cleared. 2087 */ 2088 public void clearCache(boolean includeDiskFiles) { 2089 // Note: this really needs to be a static method as it clears cache for all 2090 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2091 // we can't make this static. 2092 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2093 includeDiskFiles ? 1 : 0, 0); 2094 } 2095 2096 /** 2097 * Make sure that clearing the form data removes the adapter from the 2098 * currently focused textfield if there is one. 2099 */ 2100 public void clearFormData() { 2101 if (inEditingMode()) { 2102 AutoCompleteAdapter adapter = null; 2103 mWebTextView.setAdapterCustom(adapter); 2104 } 2105 } 2106 2107 /** 2108 * Tell the WebView to clear its internal back/forward list. 2109 */ 2110 public void clearHistory() { 2111 mCallbackProxy.getBackForwardList().setClearPending(); 2112 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2113 } 2114 2115 /** 2116 * Clear the SSL preferences table stored in response to proceeding with SSL 2117 * certificate errors. 2118 */ 2119 public void clearSslPreferences() { 2120 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2121 } 2122 2123 /** 2124 * Return the WebBackForwardList for this WebView. This contains the 2125 * back/forward list for use in querying each item in the history stack. 2126 * This is a copy of the private WebBackForwardList so it contains only a 2127 * snapshot of the current state. Multiple calls to this method may return 2128 * different objects. The object returned from this method will not be 2129 * updated to reflect any new state. 2130 */ 2131 public WebBackForwardList copyBackForwardList() { 2132 return mCallbackProxy.getBackForwardList().clone(); 2133 } 2134 2135 /* 2136 * Highlight and scroll to the next occurance of String in findAll. 2137 * Wraps the page infinitely, and scrolls. Must be called after 2138 * calling findAll. 2139 * 2140 * @param forward Direction to search. 2141 */ 2142 public void findNext(boolean forward) { 2143 nativeFindNext(forward); 2144 } 2145 2146 /* 2147 * Find all instances of find on the page and highlight them. 2148 * @param find String to find. 2149 * @return int The number of occurances of the String "find" 2150 * that were found. 2151 */ 2152 public int findAll(String find) { 2153 mFindIsUp = true; 2154 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2155 invalidate(); 2156 return result; 2157 } 2158 2159 // Used to know whether the find dialog is open. Affects whether 2160 // or not we draw the highlights for matches. 2161 private boolean mFindIsUp; 2162 2163 /** 2164 * Return the first substring consisting of the address of a physical 2165 * location. Currently, only addresses in the United States are detected, 2166 * and consist of: 2167 * - a house number 2168 * - a street name 2169 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2170 * - a city name 2171 * - a state or territory, either spelled out or two-letter abbr. 2172 * - an optional 5 digit or 9 digit zip code. 2173 * 2174 * All names must be correctly capitalized, and the zip code, if present, 2175 * must be valid for the state. The street type must be a standard USPS 2176 * spelling or abbreviation. The state or territory must also be spelled 2177 * or abbreviated using USPS standards. The house number may not exceed 2178 * five digits. 2179 * @param addr The string to search for addresses. 2180 * 2181 * @return the address, or if no address is found, return null. 2182 */ 2183 public static String findAddress(String addr) { 2184 return findAddress(addr, false); 2185 } 2186 2187 /** 2188 * @hide 2189 * Return the first substring consisting of the address of a physical 2190 * location. Currently, only addresses in the United States are detected, 2191 * and consist of: 2192 * - a house number 2193 * - a street name 2194 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2195 * - a city name 2196 * - a state or territory, either spelled out or two-letter abbr. 2197 * - an optional 5 digit or 9 digit zip code. 2198 * 2199 * Names are optionally capitalized, and the zip code, if present, 2200 * must be valid for the state. The street type must be a standard USPS 2201 * spelling or abbreviation. The state or territory must also be spelled 2202 * or abbreviated using USPS standards. The house number may not exceed 2203 * five digits. 2204 * @param addr The string to search for addresses. 2205 * @param caseInsensitive addr Set to true to make search ignore case. 2206 * 2207 * @return the address, or if no address is found, return null. 2208 */ 2209 public static String findAddress(String addr, boolean caseInsensitive) { 2210 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2211 } 2212 2213 /* 2214 * Clear the highlighting surrounding text matches created by findAll. 2215 */ 2216 public void clearMatches() { 2217 mFindIsUp = false; 2218 nativeSetFindIsDown(); 2219 // Now that the dialog has been removed, ensure that we scroll to a 2220 // location that is not beyond the end of the page. 2221 pinScrollTo(mScrollX, mScrollY, false, 0); 2222 invalidate(); 2223 } 2224 2225 /** 2226 * Query the document to see if it contains any image references. The 2227 * message object will be dispatched with arg1 being set to 1 if images 2228 * were found and 0 if the document does not reference any images. 2229 * @param response The message that will be dispatched with the result. 2230 */ 2231 public void documentHasImages(Message response) { 2232 if (response == null) { 2233 return; 2234 } 2235 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2236 } 2237 2238 @Override 2239 public void computeScroll() { 2240 if (mScroller.computeScrollOffset()) { 2241 int oldX = mScrollX; 2242 int oldY = mScrollY; 2243 mScrollX = mScroller.getCurrX(); 2244 mScrollY = mScroller.getCurrY(); 2245 postInvalidate(); // So we draw again 2246 if (oldX != mScrollX || oldY != mScrollY) { 2247 // as onScrollChanged() is not called, sendOurVisibleRect() 2248 // needs to be call explicitly 2249 sendOurVisibleRect(); 2250 } 2251 } else { 2252 super.computeScroll(); 2253 } 2254 } 2255 2256 private static int computeDuration(int dx, int dy) { 2257 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2258 int duration = distance * 1000 / STD_SPEED; 2259 return Math.min(duration, MAX_DURATION); 2260 } 2261 2262 // helper to pin the scrollBy parameters (already in view coordinates) 2263 // returns true if the scroll was changed 2264 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2265 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2266 } 2267 2268 // helper to pin the scrollTo parameters (already in view coordinates) 2269 // returns true if the scroll was changed 2270 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2271 x = pinLocX(x); 2272 y = pinLocY(y); 2273 int dx = x - mScrollX; 2274 int dy = y - mScrollY; 2275 2276 if ((dx | dy) == 0) { 2277 return false; 2278 } 2279 2280 if (true && animate) { 2281 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2282 2283 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2284 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2285 invalidate(); 2286 } else { 2287 mScroller.abortAnimation(); // just in case 2288 scrollTo(x, y); 2289 } 2290 return true; 2291 } 2292 2293 // Scale from content to view coordinates, and pin. 2294 // Also called by jni webview.cpp 2295 private void setContentScrollBy(int cx, int cy, boolean animate) { 2296 if (mDrawHistory) { 2297 // disallow WebView to change the scroll position as History Picture 2298 // is used in the view system. 2299 // TODO: as we switchOutDrawHistory when trackball or navigation 2300 // keys are hit, this should be safe. Right? 2301 return; 2302 } 2303 cx = contentToView(cx); 2304 cy = contentToView(cy); 2305 if (mHeightCanMeasure) { 2306 // move our visible rect according to scroll request 2307 if (cy != 0) { 2308 Rect tempRect = new Rect(); 2309 calcOurVisibleRect(tempRect); 2310 tempRect.offset(cx, cy); 2311 requestRectangleOnScreen(tempRect); 2312 } 2313 // FIXME: We scroll horizontally no matter what because currently 2314 // ScrollView and ListView will not scroll horizontally. 2315 // FIXME: Why do we only scroll horizontally if there is no 2316 // vertical scroll? 2317// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2318 if (cy == 0 && cx != 0) { 2319 pinScrollBy(cx, 0, animate, 0); 2320 } 2321 } else { 2322 pinScrollBy(cx, cy, animate, 0); 2323 } 2324 } 2325 2326 // scale from content to view coordinates, and pin 2327 // return true if pin caused the final x/y different than the request cx/cy; 2328 // return false if the view scroll to the exact position as it is requested. 2329 private boolean setContentScrollTo(int cx, int cy) { 2330 if (mDrawHistory) { 2331 // disallow WebView to change the scroll position as History Picture 2332 // is used in the view system. 2333 // One known case where this is called is that WebCore tries to 2334 // restore the scroll position. As history Picture already uses the 2335 // saved scroll position, it is ok to skip this. 2336 return false; 2337 } 2338 int vx = contentToView(cx); 2339 int vy = contentToView(cy); 2340// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2341// vx + " " + vy + "]"); 2342 pinScrollTo(vx, vy, false, 0); 2343 if (mScrollX != vx || mScrollY != vy) { 2344 return true; 2345 } else { 2346 return false; 2347 } 2348 } 2349 2350 // scale from content to view coordinates, and pin 2351 private void spawnContentScrollTo(int cx, int cy) { 2352 if (mDrawHistory) { 2353 // disallow WebView to change the scroll position as History Picture 2354 // is used in the view system. 2355 return; 2356 } 2357 int vx = contentToView(cx); 2358 int vy = contentToView(cy); 2359 pinScrollTo(vx, vy, true, 0); 2360 } 2361 2362 /** 2363 * These are from webkit, and are in content coordinate system (unzoomed) 2364 */ 2365 private void contentSizeChanged(boolean updateLayout) { 2366 // suppress 0,0 since we usually see real dimensions soon after 2367 // this avoids drawing the prev content in a funny place. If we find a 2368 // way to consolidate these notifications, this check may become 2369 // obsolete 2370 if ((mContentWidth | mContentHeight) == 0) { 2371 return; 2372 } 2373 2374 if (mHeightCanMeasure) { 2375 if (getMeasuredHeight() != contentToView(mContentHeight) 2376 && updateLayout) { 2377 requestLayout(); 2378 } 2379 } else if (mWidthCanMeasure) { 2380 if (getMeasuredWidth() != contentToView(mContentWidth) 2381 && updateLayout) { 2382 requestLayout(); 2383 } 2384 } else { 2385 // If we don't request a layout, try to send our view size to the 2386 // native side to ensure that WebCore has the correct dimensions. 2387 sendViewSizeZoom(); 2388 } 2389 } 2390 2391 /** 2392 * Set the WebViewClient that will receive various notifications and 2393 * requests. This will replace the current handler. 2394 * @param client An implementation of WebViewClient. 2395 */ 2396 public void setWebViewClient(WebViewClient client) { 2397 mCallbackProxy.setWebViewClient(client); 2398 } 2399 2400 /** 2401 * Register the interface to be used when content can not be handled by 2402 * the rendering engine, and should be downloaded instead. This will replace 2403 * the current handler. 2404 * @param listener An implementation of DownloadListener. 2405 */ 2406 public void setDownloadListener(DownloadListener listener) { 2407 mCallbackProxy.setDownloadListener(listener); 2408 } 2409 2410 /** 2411 * Set the chrome handler. This is an implementation of WebChromeClient for 2412 * use in handling Javascript dialogs, favicons, titles, and the progress. 2413 * This will replace the current handler. 2414 * @param client An implementation of WebChromeClient. 2415 */ 2416 public void setWebChromeClient(WebChromeClient client) { 2417 mCallbackProxy.setWebChromeClient(client); 2418 } 2419 2420 /** 2421 * Gets the chrome handler. 2422 * @return the current WebChromeClient instance. 2423 * 2424 * @hide API council approval. 2425 */ 2426 public WebChromeClient getWebChromeClient() { 2427 return mCallbackProxy.getWebChromeClient(); 2428 } 2429 2430 /** 2431 * Set the Picture listener. This is an interface used to receive 2432 * notifications of a new Picture. 2433 * @param listener An implementation of WebView.PictureListener. 2434 */ 2435 public void setPictureListener(PictureListener listener) { 2436 mPictureListener = listener; 2437 } 2438 2439 /** 2440 * {@hide} 2441 */ 2442 /* FIXME: Debug only! Remove for SDK! */ 2443 public void externalRepresentation(Message callback) { 2444 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2445 } 2446 2447 /** 2448 * {@hide} 2449 */ 2450 /* FIXME: Debug only! Remove for SDK! */ 2451 public void documentAsText(Message callback) { 2452 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2453 } 2454 2455 /** 2456 * Use this function to bind an object to Javascript so that the 2457 * methods can be accessed from Javascript. 2458 * <p><strong>IMPORTANT:</strong> 2459 * <ul> 2460 * <li> Using addJavascriptInterface() allows JavaScript to control your 2461 * application. This can be a very useful feature or a dangerous security 2462 * issue. When the HTML in the WebView is untrustworthy (for example, part 2463 * or all of the HTML is provided by some person or process), then an 2464 * attacker could inject HTML that will execute your code and possibly any 2465 * code of the attacker's choosing.<br> 2466 * Do not use addJavascriptInterface() unless all of the HTML in this 2467 * WebView was written by you.</li> 2468 * <li> The Java object that is bound runs in another thread and not in 2469 * the thread that it was constructed in.</li> 2470 * </ul></p> 2471 * @param obj The class instance to bind to Javascript 2472 * @param interfaceName The name to used to expose the class in Javascript 2473 */ 2474 public void addJavascriptInterface(Object obj, String interfaceName) { 2475 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2476 arg.mObject = obj; 2477 arg.mInterfaceName = interfaceName; 2478 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2479 } 2480 2481 /** 2482 * Return the WebSettings object used to control the settings for this 2483 * WebView. 2484 * @return A WebSettings object that can be used to control this WebView's 2485 * settings. 2486 */ 2487 public WebSettings getSettings() { 2488 return mWebViewCore.getSettings(); 2489 } 2490 2491 /** 2492 * Return the list of currently loaded plugins. 2493 * @return The list of currently loaded plugins. 2494 */ 2495 public static synchronized PluginList getPluginList() { 2496 if (sPluginList == null) { 2497 sPluginList = new PluginList(); 2498 } 2499 return sPluginList; 2500 } 2501 2502 /** 2503 * TODO: need to add @Deprecated 2504 */ 2505 public void refreshPlugins(boolean reloadOpenPages) { 2506 PluginManager.getInstance(mContext).refreshPlugins(reloadOpenPages); 2507 } 2508 2509 //------------------------------------------------------------------------- 2510 // Override View methods 2511 //------------------------------------------------------------------------- 2512 2513 @Override 2514 protected void finalize() throws Throwable { 2515 destroy(); 2516 } 2517 2518 @Override 2519 protected void onDraw(Canvas canvas) { 2520 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2521 if (mNativeClass == 0) { 2522 return; 2523 } 2524 if (mWebViewCore.mEndScaleZoom) { 2525 mWebViewCore.mEndScaleZoom = false; 2526 if (mTouchMode >= FIRST_SCROLL_ZOOM 2527 && mTouchMode <= LAST_SCROLL_ZOOM) { 2528 setHorizontalScrollBarEnabled(true); 2529 setVerticalScrollBarEnabled(true); 2530 mTouchMode = TOUCH_DONE_MODE; 2531 } 2532 } 2533 int sc = canvas.save(); 2534 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 2535 scrollZoomDraw(canvas); 2536 } else { 2537 // Update the buttons in the picture, so when we draw the picture 2538 // to the screen, they are in the correct state. 2539 // Tell the native side if user is a) touching the screen, 2540 // b) pressing the trackball down, or c) pressing the enter key 2541 // If the cursor is on a button, we need to draw it in the pressed 2542 // state. 2543 // If mNativeClass is 0, we should not reach here, so we do not 2544 // need to check it again. 2545 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2546 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2547 || mTrackballDown || mGotCenterDown, false); 2548 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2549 } 2550 canvas.restoreToCount(sc); 2551 2552 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2553 invalidate(); 2554 } 2555 } 2556 2557 @Override 2558 public void setLayoutParams(ViewGroup.LayoutParams params) { 2559 if (params.height == LayoutParams.WRAP_CONTENT) { 2560 mWrapContent = true; 2561 } 2562 super.setLayoutParams(params); 2563 } 2564 2565 @Override 2566 public boolean performLongClick() { 2567 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 2568 // Send the click so that the textfield is in focus 2569 // FIXME: When we start respecting changes to the native textfield's 2570 // selection, need to make sure that this does not change it. 2571 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 2572 nativeCursorNodePointer()); 2573 rebuildWebTextView(); 2574 } 2575 if (inEditingMode()) { 2576 return mWebTextView.performLongClick(); 2577 } else { 2578 return super.performLongClick(); 2579 } 2580 } 2581 2582 private void drawCoreAndCursorRing(Canvas canvas, int color, 2583 boolean drawCursorRing) { 2584 if (mDrawHistory) { 2585 canvas.scale(mActualScale, mActualScale); 2586 canvas.drawPicture(mHistoryPicture); 2587 return; 2588 } 2589 2590 boolean animateZoom = mZoomScale != 0; 2591 boolean animateScroll = !mScroller.isFinished() 2592 || mVelocityTracker != null; 2593 if (animateZoom) { 2594 float zoomScale; 2595 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 2596 if (interval < ZOOM_ANIMATION_LENGTH) { 2597 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 2598 zoomScale = 1.0f / (mInvInitialZoomScale 2599 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 2600 invalidate(); 2601 } else { 2602 zoomScale = mZoomScale; 2603 // set mZoomScale to be 0 as we have done animation 2604 mZoomScale = 0; 2605 } 2606 float scale = zoomScale * mInvInitialZoomScale; 2607 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 2608 - mZoomCenterX); 2609 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 2610 * zoomScale)) + mScrollX; 2611 int ty = Math.round(scale * (mInitialScrollY + mZoomCenterY) 2612 - mZoomCenterY); 2613 ty = -pinLoc(ty, getViewHeight(), Math.round(mContentHeight 2614 * zoomScale)) + mScrollY; 2615 canvas.translate(tx, ty); 2616 canvas.scale(zoomScale, zoomScale); 2617 } else { 2618 canvas.scale(mActualScale, mActualScale); 2619 } 2620 2621 mWebViewCore.drawContentPicture(canvas, color, animateZoom, 2622 animateScroll); 2623 2624 if (mNativeClass == 0) return; 2625 if (mShiftIsPressed) { 2626 if (mTouchSelection) { 2627 nativeDrawSelectionRegion(canvas); 2628 } else { 2629 nativeDrawSelection(canvas, mSelectX, mSelectY, 2630 mExtendSelection); 2631 } 2632 } else if (drawCursorRing) { 2633 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 2634 mTouchMode = TOUCH_SHORTPRESS_MODE; 2635 HitTestResult hitTest = getHitTestResult(); 2636 if (hitTest != null && 2637 hitTest.mType != HitTestResult.UNKNOWN_TYPE) { 2638 mPrivateHandler.sendMessageDelayed(mPrivateHandler 2639 .obtainMessage(SWITCH_TO_LONGPRESS), 2640 LONG_PRESS_TIMEOUT); 2641 } 2642 } 2643 nativeDrawCursorRing(canvas); 2644 } 2645 // When the FindDialog is up, only draw the matches if we are not in 2646 // the process of scrolling them into view. 2647 if (mFindIsUp && !animateScroll) { 2648 nativeDrawMatches(canvas); 2649 } 2650 } 2651 2652 private float scrollZoomGridScale(float invScale) { 2653 float griddedInvScale = (int) (invScale * SCROLL_ZOOM_GRID) 2654 / (float) SCROLL_ZOOM_GRID; 2655 return 1.0f / griddedInvScale; 2656 } 2657 2658 private float scrollZoomX(float scale) { 2659 int width = getViewWidth(); 2660 float maxScrollZoomX = mContentWidth * scale - width; 2661 int maxX = mContentWidth - width; 2662 return -(maxScrollZoomX > 0 ? mZoomScrollX * maxScrollZoomX / maxX 2663 : maxScrollZoomX / 2); 2664 } 2665 2666 private float scrollZoomY(float scale) { 2667 int height = getViewHeight(); 2668 float maxScrollZoomY = mContentHeight * scale - height; 2669 int maxY = mContentHeight - height; 2670 return -(maxScrollZoomY > 0 ? mZoomScrollY * maxScrollZoomY / maxY 2671 : maxScrollZoomY / 2); 2672 } 2673 2674 private void drawMagnifyFrame(Canvas canvas, Rect frame, Paint paint) { 2675 final float ADORNMENT_LEN = 16.0f; 2676 float width = frame.width(); 2677 float height = frame.height(); 2678 Path path = new Path(); 2679 path.moveTo(-ADORNMENT_LEN, -ADORNMENT_LEN); 2680 path.lineTo(0, 0); 2681 path.lineTo(width, 0); 2682 path.lineTo(width + ADORNMENT_LEN, -ADORNMENT_LEN); 2683 path.moveTo(-ADORNMENT_LEN, height + ADORNMENT_LEN); 2684 path.lineTo(0, height); 2685 path.lineTo(width, height); 2686 path.lineTo(width + ADORNMENT_LEN, height + ADORNMENT_LEN); 2687 path.moveTo(0, 0); 2688 path.lineTo(0, height); 2689 path.moveTo(width, 0); 2690 path.lineTo(width, height); 2691 path.offset(frame.left, frame.top); 2692 canvas.drawPath(path, paint); 2693 } 2694 2695 // Returns frame surrounding magified portion of screen while 2696 // scroll-zoom is enabled. The frame is also used to center the 2697 // zoom-in zoom-out points at the start and end of the animation. 2698 private Rect scrollZoomFrame(int width, int height, float halfScale) { 2699 Rect scrollFrame = new Rect(); 2700 scrollFrame.set(mZoomScrollX, mZoomScrollY, 2701 mZoomScrollX + width, mZoomScrollY + height); 2702 if (mContentWidth * mZoomScrollLimit < width) { 2703 float scale = zoomFrameScaleX(width, halfScale, 1.0f); 2704 float offsetX = (width * scale - width) * 0.5f; 2705 scrollFrame.left -= offsetX; 2706 scrollFrame.right += offsetX; 2707 } 2708 if (mContentHeight * mZoomScrollLimit < height) { 2709 float scale = zoomFrameScaleY(height, halfScale, 1.0f); 2710 float offsetY = (height * scale - height) * 0.5f; 2711 scrollFrame.top -= offsetY; 2712 scrollFrame.bottom += offsetY; 2713 } 2714 return scrollFrame; 2715 } 2716 2717 private float zoomFrameScaleX(int width, float halfScale, float noScale) { 2718 // mContentWidth > width > mContentWidth * mZoomScrollLimit 2719 if (mContentWidth <= width) { 2720 return halfScale; 2721 } 2722 float part = (width - mContentWidth * mZoomScrollLimit) 2723 / (width * (1 - mZoomScrollLimit)); 2724 return halfScale * part + noScale * (1.0f - part); 2725 } 2726 2727 private float zoomFrameScaleY(int height, float halfScale, float noScale) { 2728 if (mContentHeight <= height) { 2729 return halfScale; 2730 } 2731 float part = (height - mContentHeight * mZoomScrollLimit) 2732 / (height * (1 - mZoomScrollLimit)); 2733 return halfScale * part + noScale * (1.0f - part); 2734 } 2735 2736 private float scrollZoomMagScale(float invScale) { 2737 return (invScale * 2 + mInvActualScale) / 3; 2738 } 2739 2740 private void scrollZoomDraw(Canvas canvas) { 2741 float invScale = mZoomScrollInvLimit; 2742 int elapsed = 0; 2743 if (mTouchMode != SCROLL_ZOOM_OUT) { 2744 elapsed = (int) Math.min(System.currentTimeMillis() 2745 - mZoomScrollStart, SCROLL_ZOOM_DURATION); 2746 float transitionScale = (mZoomScrollInvLimit - mInvActualScale) 2747 * elapsed / SCROLL_ZOOM_DURATION; 2748 if (mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 2749 invScale = mInvActualScale + transitionScale; 2750 } else { /* if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) */ 2751 invScale = mZoomScrollInvLimit - transitionScale; 2752 } 2753 } 2754 float scale = scrollZoomGridScale(invScale); 2755 invScale = 1.0f / scale; 2756 int width = getViewWidth(); 2757 int height = getViewHeight(); 2758 float halfScale = scrollZoomMagScale(invScale); 2759 Rect scrollFrame = scrollZoomFrame(width, height, halfScale); 2760 if (elapsed == SCROLL_ZOOM_DURATION) { 2761 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 2762 setHorizontalScrollBarEnabled(true); 2763 setVerticalScrollBarEnabled(true); 2764 rebuildWebTextView(); 2765 scrollTo((int) (scrollFrame.centerX() * mActualScale) 2766 - (width >> 1), (int) (scrollFrame.centerY() 2767 * mActualScale) - (height >> 1)); 2768 mTouchMode = TOUCH_DONE_MODE; 2769 // Show all the child views once we are done. 2770 mViewManager.showAll(); 2771 } else { 2772 mTouchMode = SCROLL_ZOOM_OUT; 2773 } 2774 } 2775 float newX = scrollZoomX(scale); 2776 float newY = scrollZoomY(scale); 2777 if (DebugFlags.WEB_VIEW) { 2778 Log.v(LOGTAG, "scrollZoomDraw scale=" + scale + " + (" + newX 2779 + ", " + newY + ") mZoomScroll=(" + mZoomScrollX + ", " 2780 + mZoomScrollY + ")" + " invScale=" + invScale + " scale=" 2781 + scale); 2782 } 2783 canvas.translate(newX, newY); 2784 canvas.scale(scale, scale); 2785 boolean animating = mTouchMode != SCROLL_ZOOM_OUT; 2786 if (mDrawHistory) { 2787 int sc = canvas.save(Canvas.CLIP_SAVE_FLAG); 2788 Rect clip = new Rect(0, 0, mHistoryPicture.getWidth(), 2789 mHistoryPicture.getHeight()); 2790 canvas.clipRect(clip, Region.Op.DIFFERENCE); 2791 canvas.drawColor(mBackgroundColor); 2792 canvas.restoreToCount(sc); 2793 canvas.drawPicture(mHistoryPicture); 2794 } else { 2795 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2796 animating, true); 2797 } 2798 if (mTouchMode == TOUCH_DONE_MODE) { 2799 return; 2800 } 2801 Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); 2802 paint.setStyle(Paint.Style.STROKE); 2803 paint.setStrokeWidth(30.0f); 2804 paint.setARGB(0x50, 0, 0, 0); 2805 int maxX = mContentWidth - width; 2806 int maxY = mContentHeight - height; 2807 if (true) { // experiment: draw hint to place finger off magnify area 2808 drawMagnifyFrame(canvas, scrollFrame, paint); 2809 } else { 2810 canvas.drawRect(scrollFrame, paint); 2811 } 2812 int sc = canvas.save(); 2813 canvas.clipRect(scrollFrame); 2814 float halfX = (float) mZoomScrollX / maxX; 2815 if (mContentWidth * mZoomScrollLimit < width) { 2816 halfX = zoomFrameScaleX(width, 0.5f, halfX); 2817 } 2818 float halfY = (float) mZoomScrollY / maxY; 2819 if (mContentHeight * mZoomScrollLimit < height) { 2820 halfY = zoomFrameScaleY(height, 0.5f, halfY); 2821 } 2822 canvas.scale(halfScale, halfScale, mZoomScrollX + width * halfX 2823 , mZoomScrollY + height * halfY); 2824 if (DebugFlags.WEB_VIEW) { 2825 Log.v(LOGTAG, "scrollZoomDraw halfScale=" + halfScale + " w/h=(" 2826 + width + ", " + height + ") half=(" + halfX + ", " 2827 + halfY + ")"); 2828 } 2829 if (mDrawHistory) { 2830 canvas.drawPicture(mHistoryPicture); 2831 } else { 2832 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2833 animating, false); 2834 } 2835 canvas.restoreToCount(sc); 2836 if (mTouchMode != SCROLL_ZOOM_OUT) { 2837 invalidate(); 2838 } 2839 } 2840 2841 private void zoomScrollTap(float x, float y) { 2842 float scale = scrollZoomGridScale(mZoomScrollInvLimit); 2843 float left = scrollZoomX(scale); 2844 float top = scrollZoomY(scale); 2845 int width = getViewWidth(); 2846 int height = getViewHeight(); 2847 x -= width * scale / 2; 2848 y -= height * scale / 2; 2849 mZoomScrollX = Math.min(mContentWidth - width 2850 , Math.max(0, (int) ((x - left) / scale))); 2851 mZoomScrollY = Math.min(mContentHeight - height 2852 , Math.max(0, (int) ((y - top) / scale))); 2853 if (DebugFlags.WEB_VIEW) { 2854 Log.v(LOGTAG, "zoomScrollTap scale=" + scale + " + (" + left 2855 + ", " + top + ") mZoomScroll=(" + mZoomScrollX + ", " 2856 + mZoomScrollY + ")" + " x=" + x + " y=" + y); 2857 } 2858 } 2859 2860 /** 2861 * @hide 2862 */ 2863 public boolean canZoomScrollOut() { 2864 if (mContentWidth == 0 || mContentHeight == 0) { 2865 return false; 2866 } 2867 int width = getViewWidth(); 2868 int height = getViewHeight(); 2869 float x = (float) width / (float) mContentWidth; 2870 float y = (float) height / (float) mContentHeight; 2871 mZoomScrollLimit = Math.max(DEFAULT_MIN_ZOOM_SCALE, Math.min(x, y)); 2872 mZoomScrollInvLimit = 1.0f / mZoomScrollLimit; 2873 if (DebugFlags.WEB_VIEW) { 2874 Log.v(LOGTAG, "canZoomScrollOut" 2875 + " mInvActualScale=" + mInvActualScale 2876 + " mZoomScrollLimit=" + mZoomScrollLimit 2877 + " mZoomScrollInvLimit=" + mZoomScrollInvLimit 2878 + " mContentWidth=" + mContentWidth 2879 + " mContentHeight=" + mContentHeight 2880 ); 2881 } 2882 // don't zoom out unless magnify area is at least half as wide 2883 // or tall as content 2884 float limit = mZoomScrollLimit * 2; 2885 return mContentWidth >= width * limit 2886 || mContentHeight >= height * limit; 2887 } 2888 2889 private void startZoomScrollOut() { 2890 setHorizontalScrollBarEnabled(false); 2891 setVerticalScrollBarEnabled(false); 2892 if (getSettings().getBuiltInZoomControls()) { 2893 if (mZoomButtonsController.isVisible()) { 2894 mZoomButtonsController.setVisible(false); 2895 } 2896 } else { 2897 if (mZoomControlRunnable != null) { 2898 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 2899 } 2900 if (mZoomControls != null) { 2901 mZoomControls.hide(); 2902 } 2903 } 2904 int width = getViewWidth(); 2905 int height = getViewHeight(); 2906 int halfW = width >> 1; 2907 mLastTouchX = halfW; 2908 int halfH = height >> 1; 2909 mLastTouchY = halfH; 2910 mScroller.abortAnimation(); 2911 mZoomScrollStart = System.currentTimeMillis(); 2912 Rect zoomFrame = scrollZoomFrame(width, height 2913 , scrollZoomMagScale(mZoomScrollInvLimit)); 2914 mZoomScrollX = Math.max(0, (int) ((mScrollX + halfW) * mInvActualScale) 2915 - (zoomFrame.width() >> 1)); 2916 mZoomScrollY = Math.max(0, (int) ((mScrollY + halfH) * mInvActualScale) 2917 - (zoomFrame.height() >> 1)); 2918 scrollTo(0, 0); // triggers inval, starts animation 2919 clearTextEntry(); 2920 if (DebugFlags.WEB_VIEW) { 2921 Log.v(LOGTAG, "startZoomScrollOut mZoomScroll=(" 2922 + mZoomScrollX + ", " + mZoomScrollY +")"); 2923 } 2924 } 2925 2926 /** 2927 * @hide 2928 */ 2929 public void zoomScrollOut() { 2930 if (canZoomScrollOut() == false) { 2931 mTouchMode = TOUCH_DONE_MODE; 2932 return; 2933 } 2934 // Hide the child views while in this mode. 2935 mViewManager.hideAll(); 2936 startZoomScrollOut(); 2937 mTouchMode = SCROLL_ZOOM_ANIMATION_OUT; 2938 invalidate(); 2939 } 2940 2941 private void moveZoomScrollWindow(float x, float y) { 2942 if (Math.abs(x - mLastZoomScrollRawX) < 1.5f 2943 && Math.abs(y - mLastZoomScrollRawY) < 1.5f) { 2944 return; 2945 } 2946 mLastZoomScrollRawX = x; 2947 mLastZoomScrollRawY = y; 2948 int oldX = mZoomScrollX; 2949 int oldY = mZoomScrollY; 2950 int width = getViewWidth(); 2951 int height = getViewHeight(); 2952 int maxZoomX = mContentWidth - width; 2953 if (maxZoomX > 0) { 2954 int maxScreenX = width - (int) Math.ceil(width 2955 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 2956 if (DebugFlags.WEB_VIEW) { 2957 Log.v(LOGTAG, "moveZoomScrollWindow-X" 2958 + " maxScreenX=" + maxScreenX + " width=" + width 2959 + " mZoomScrollLimit=" + mZoomScrollLimit + " x=" + x); 2960 } 2961 x += maxScreenX * mLastScrollX / maxZoomX - mLastTouchX; 2962 x *= Math.max(maxZoomX / maxScreenX, mZoomScrollInvLimit); 2963 mZoomScrollX = Math.max(0, Math.min(maxZoomX, (int) x)); 2964 } 2965 int maxZoomY = mContentHeight - height; 2966 if (maxZoomY > 0) { 2967 int maxScreenY = height - (int) Math.ceil(height 2968 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 2969 if (DebugFlags.WEB_VIEW) { 2970 Log.v(LOGTAG, "moveZoomScrollWindow-Y" 2971 + " maxScreenY=" + maxScreenY + " height=" + height 2972 + " mZoomScrollLimit=" + mZoomScrollLimit + " y=" + y); 2973 } 2974 y += maxScreenY * mLastScrollY / maxZoomY - mLastTouchY; 2975 y *= Math.max(maxZoomY / maxScreenY, mZoomScrollInvLimit); 2976 mZoomScrollY = Math.max(0, Math.min(maxZoomY, (int) y)); 2977 } 2978 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 2979 invalidate(); 2980 } 2981 if (DebugFlags.WEB_VIEW) { 2982 Log.v(LOGTAG, "moveZoomScrollWindow" 2983 + " scrollTo=(" + mZoomScrollX + ", " + mZoomScrollY + ")" 2984 + " mLastTouch=(" + mLastTouchX + ", " + mLastTouchY + ")" 2985 + " maxZoom=(" + maxZoomX + ", " + maxZoomY + ")" 2986 + " last=("+mLastScrollX+", "+mLastScrollY+")" 2987 + " x=" + x + " y=" + y); 2988 } 2989 } 2990 2991 private void setZoomScrollIn() { 2992 mZoomScrollStart = System.currentTimeMillis(); 2993 } 2994 2995 private float mZoomScrollLimit; 2996 private float mZoomScrollInvLimit; 2997 private int mLastScrollX; 2998 private int mLastScrollY; 2999 private long mZoomScrollStart; 3000 private int mZoomScrollX; 3001 private int mZoomScrollY; 3002 private float mLastZoomScrollRawX = -1000.0f; 3003 private float mLastZoomScrollRawY = -1000.0f; 3004 // The zoomed scale varies from 1.0 to DEFAULT_MIN_ZOOM_SCALE == 0.25. 3005 // The zoom animation duration SCROLL_ZOOM_DURATION == 0.5. 3006 // Two pressures compete for gridding; a high frame rate (e.g. 20 fps) 3007 // and minimizing font cache allocations (fewer frames is better). 3008 // A SCROLL_ZOOM_GRID of 6 permits about 20 zoom levels over 0.5 seconds: 3009 // the inverse of: 1.0, 1.16, 1.33, 1.5, 1.67, 1.84, 2.0, etc. to 4.0 3010 private static final int SCROLL_ZOOM_GRID = 6; 3011 private static final int SCROLL_ZOOM_DURATION = 500; 3012 // Make it easier to get to the bottom of a document by reserving a 32 3013 // pixel buffer, for when the starting drag is a bit below the bottom of 3014 // the magnify frame. 3015 private static final int SCROLL_ZOOM_FINGER_BUFFER = 32; 3016 3017 // draw history 3018 private boolean mDrawHistory = false; 3019 private Picture mHistoryPicture = null; 3020 private int mHistoryWidth = 0; 3021 private int mHistoryHeight = 0; 3022 3023 // Only check the flag, can be called from WebCore thread 3024 boolean drawHistory() { 3025 return mDrawHistory; 3026 } 3027 3028 // Should only be called in UI thread 3029 void switchOutDrawHistory() { 3030 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3031 if (mDrawHistory && mWebViewCore.pictureReady()) { 3032 mDrawHistory = false; 3033 invalidate(); 3034 int oldScrollX = mScrollX; 3035 int oldScrollY = mScrollY; 3036 mScrollX = pinLocX(mScrollX); 3037 mScrollY = pinLocY(mScrollY); 3038 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3039 mUserScroll = false; 3040 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3041 oldScrollY); 3042 } 3043 sendOurVisibleRect(); 3044 } 3045 } 3046 3047 WebViewCore.CursorData cursorData() { 3048 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3049 result.mMoveGeneration = nativeMoveGeneration(); 3050 result.mFrame = nativeCursorFramePointer(); 3051 Point position = nativeCursorPosition(); 3052 result.mX = position.x; 3053 result.mY = position.y; 3054 return result; 3055 } 3056 3057 /** 3058 * Delete text from start to end in the focused textfield. If there is no 3059 * focus, or if start == end, silently fail. If start and end are out of 3060 * order, swap them. 3061 * @param start Beginning of selection to delete. 3062 * @param end End of selection to delete. 3063 */ 3064 /* package */ void deleteSelection(int start, int end) { 3065 mTextGeneration++; 3066 WebViewCore.DeleteSelectionData data 3067 = new WebViewCore.DeleteSelectionData(); 3068 data.mStart = start; 3069 data.mEnd = end; 3070 data.mTextGeneration = mTextGeneration; 3071 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, data); 3072 } 3073 3074 /** 3075 * Set the selection to (start, end) in the focused textfield. If start and 3076 * end are out of order, swap them. 3077 * @param start Beginning of selection. 3078 * @param end End of selection. 3079 */ 3080 /* package */ void setSelection(int start, int end) { 3081 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3082 } 3083 3084 // Called by JNI when a touch event puts a textfield into focus. 3085 private void displaySoftKeyboard(boolean isTextView) { 3086 InputMethodManager imm = (InputMethodManager) 3087 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3088 3089 if (isTextView) { 3090 imm.showSoftInput(mWebTextView, 0); 3091 // Now we need to fake a touch event to place the cursor where the 3092 // user touched. 3093 AbsoluteLayout.LayoutParams lp = (AbsoluteLayout.LayoutParams) 3094 mWebTextView.getLayoutParams(); 3095 if (lp != null) { 3096 // Take the last touch and adjust for the location of the 3097 // WebTextView. 3098 float x = mLastTouchX + (float) (mScrollX - lp.x); 3099 float y = mLastTouchY + (float) (mScrollY - lp.y); 3100 mWebTextView.fakeTouchEvent(x, y); 3101 } 3102 if (mInZoomOverview) { 3103 // if in zoom overview mode, call doDoubleTap() to bring it back 3104 // to normal mode so that user can enter text. 3105 doDoubleTap(); 3106 } 3107 } 3108 else { // used by plugins 3109 imm.showSoftInput(this, 0); 3110 } 3111 } 3112 3113 // Called by WebKit to instruct the UI to hide the keyboard 3114 private void hideSoftKeyboard() { 3115 InputMethodManager imm = (InputMethodManager) 3116 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3117 3118 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3119 } 3120 3121 /* 3122 * This method checks the current focus and cursor and potentially rebuilds 3123 * mWebTextView to have the appropriate properties, such as password, 3124 * multiline, and what text it contains. It also removes it if necessary. 3125 */ 3126 private void rebuildWebTextView() { 3127 // If the WebView does not have focus, do nothing until it gains focus. 3128 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus()) 3129 || (mTouchMode >= FIRST_SCROLL_ZOOM 3130 && mTouchMode <= LAST_SCROLL_ZOOM)) { 3131 return; 3132 } 3133 boolean alreadyThere = inEditingMode(); 3134 // inEditingMode can only return true if mWebTextView is non-null, 3135 // so we can safely call remove() if (alreadyThere) 3136 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3137 if (alreadyThere) { 3138 mWebTextView.remove(); 3139 } 3140 return; 3141 } 3142 // At this point, we know we have found an input field, so go ahead 3143 // and create the WebTextView if necessary. 3144 if (mWebTextView == null) { 3145 mWebTextView = new WebTextView(mContext, WebView.this); 3146 // Initialize our generation number. 3147 mTextGeneration = 0; 3148 } 3149 mWebTextView.setTextSize(contentToView(nativeFocusCandidateTextSize())); 3150 Rect visibleRect = new Rect(); 3151 calcOurContentVisibleRect(visibleRect); 3152 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3153 // should be in content coordinates. 3154 Rect bounds = nativeFocusCandidateNodeBounds(); 3155 if (!Rect.intersects(bounds, visibleRect)) { 3156 mWebTextView.bringIntoView(); 3157 } 3158 String text = nativeFocusCandidateText(); 3159 int nodePointer = nativeFocusCandidatePointer(); 3160 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3161 // It is possible that we have the same textfield, but it has moved, 3162 // i.e. In the case of opening/closing the screen. 3163 // In that case, we need to set the dimensions, but not the other 3164 // aspects. 3165 // We also need to restore the selection, which gets wrecked by 3166 // calling setTextEntryRect. 3167 Spannable spannable = (Spannable) mWebTextView.getText(); 3168 int start = Selection.getSelectionStart(spannable); 3169 int end = Selection.getSelectionEnd(spannable); 3170 // If the text has been changed by webkit, update it. However, if 3171 // there has been more UI text input, ignore it. We will receive 3172 // another update when that text is recognized. 3173 if (text != null && !text.equals(spannable.toString()) 3174 && nativeTextGeneration() == mTextGeneration) { 3175 mWebTextView.setTextAndKeepSelection(text); 3176 } else { 3177 Selection.setSelection(spannable, start, end); 3178 } 3179 } else { 3180 Rect vBox = contentToView(bounds); 3181 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3182 vBox.height()); 3183 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3184 Gravity.RIGHT : Gravity.NO_GRAVITY); 3185 // this needs to be called before update adapter thread starts to 3186 // ensure the mWebTextView has the same node pointer 3187 mWebTextView.setNodePointer(nodePointer); 3188 int maxLength = -1; 3189 boolean isTextField = nativeFocusCandidateIsTextField(); 3190 if (isTextField) { 3191 maxLength = nativeFocusCandidateMaxLength(); 3192 String name = nativeFocusCandidateName(); 3193 if (mWebViewCore.getSettings().getSaveFormData() 3194 && name != null) { 3195 Message update = mPrivateHandler.obtainMessage( 3196 REQUEST_FORM_DATA, nodePointer); 3197 RequestFormData updater = new RequestFormData(name, 3198 getUrl(), update); 3199 Thread t = new Thread(updater); 3200 t.start(); 3201 } 3202 } 3203 mWebTextView.setMaxLength(maxLength); 3204 AutoCompleteAdapter adapter = null; 3205 mWebTextView.setAdapterCustom(adapter); 3206 mWebTextView.setSingleLine(isTextField); 3207 mWebTextView.setInPassword(nativeFocusCandidateIsPassword()); 3208 if (null == text) { 3209 mWebTextView.setText("", 0, 0); 3210 if (DebugFlags.WEB_VIEW) { 3211 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3212 } 3213 } else { 3214 // Change to true to enable the old style behavior, where 3215 // entering a textfield/textarea always set the selection to the 3216 // whole field. This was desirable for the case where the user 3217 // intends to scroll past the field using the trackball. 3218 // However, it causes a problem when replying to emails - the 3219 // user expects the cursor to be at the beginning of the 3220 // textarea. Testing out a new behavior, where textfields set 3221 // selection at the end, and textareas at the beginning. 3222 if (false) { 3223 mWebTextView.setText(text, 0, text.length()); 3224 } else if (isTextField) { 3225 int length = text.length(); 3226 mWebTextView.setText(text, length, length); 3227 if (DebugFlags.WEB_VIEW) { 3228 Log.v(LOGTAG, "rebuildWebTextView length=" + length); 3229 } 3230 } else { 3231 mWebTextView.setText(text, 0, 0); 3232 if (DebugFlags.WEB_VIEW) { 3233 Log.v(LOGTAG, "rebuildWebTextView !isTextField"); 3234 } 3235 } 3236 } 3237 mWebTextView.requestFocus(); 3238 } 3239 } 3240 3241 /* 3242 * This class requests an Adapter for the WebTextView which shows past 3243 * entries stored in the database. It is a Runnable so that it can be done 3244 * in its own thread, without slowing down the UI. 3245 */ 3246 private class RequestFormData implements Runnable { 3247 private String mName; 3248 private String mUrl; 3249 private Message mUpdateMessage; 3250 3251 public RequestFormData(String name, String url, Message msg) { 3252 mName = name; 3253 mUrl = url; 3254 mUpdateMessage = msg; 3255 } 3256 3257 public void run() { 3258 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3259 if (pastEntries.size() > 0) { 3260 AutoCompleteAdapter adapter = new 3261 AutoCompleteAdapter(mContext, pastEntries); 3262 mUpdateMessage.obj = adapter; 3263 mUpdateMessage.sendToTarget(); 3264 } 3265 } 3266 } 3267 3268 // This is used to determine long press with the center key. Does not 3269 // affect long press with the trackball/touch. 3270 private boolean mGotCenterDown = false; 3271 3272 @Override 3273 public boolean onKeyDown(int keyCode, KeyEvent event) { 3274 if (DebugFlags.WEB_VIEW) { 3275 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3276 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3277 } 3278 3279 if (mNativeClass == 0) { 3280 return false; 3281 } 3282 3283 // do this hack up front, so it always works, regardless of touch-mode 3284 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3285 mAutoRedraw = !mAutoRedraw; 3286 if (mAutoRedraw) { 3287 invalidate(); 3288 } 3289 return true; 3290 } 3291 3292 // Bubble up the key event if 3293 // 1. it is a system key; or 3294 // 2. the host application wants to handle it; or 3295 // 3. webview is in scroll-zoom state; 3296 if (event.isSystem() 3297 || mCallbackProxy.uiOverrideKeyEvent(event) 3298 || (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM)) { 3299 return false; 3300 } 3301 3302 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3303 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3304 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3305 mExtendSelection = false; 3306 mShiftIsPressed = true; 3307 if (nativeHasCursorNode()) { 3308 Rect rect = nativeCursorNodeBounds(); 3309 mSelectX = contentToView(rect.left); 3310 mSelectY = contentToView(rect.top); 3311 } else { 3312 mSelectX = mScrollX + (int) mLastTouchX; 3313 mSelectY = mScrollY + (int) mLastTouchY; 3314 } 3315 nativeHideCursor(); 3316 } 3317 3318 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3319 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3320 // always handle the navigation keys in the UI thread 3321 switchOutDrawHistory(); 3322 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3323 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3324 return true; 3325 } 3326 // Bubble up the key event as WebView doesn't handle it 3327 return false; 3328 } 3329 3330 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3331 switchOutDrawHistory(); 3332 if (event.getRepeatCount() == 0) { 3333 mGotCenterDown = true; 3334 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3335 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3336 // Already checked mNativeClass, so we do not need to check it 3337 // again. 3338 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3339 return true; 3340 } 3341 // Bubble up the key event as WebView doesn't handle it 3342 return false; 3343 } 3344 3345 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3346 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3347 // turn off copy select if a shift-key combo is pressed 3348 mExtendSelection = mShiftIsPressed = false; 3349 if (mTouchMode == TOUCH_SELECT_MODE) { 3350 mTouchMode = TOUCH_INIT_MODE; 3351 } 3352 } 3353 3354 if (getSettings().getNavDump()) { 3355 switch (keyCode) { 3356 case KeyEvent.KEYCODE_4: 3357 // "/data/data/com.android.browser/displayTree.txt" 3358 nativeDumpDisplayTree(getUrl()); 3359 break; 3360 case KeyEvent.KEYCODE_5: 3361 case KeyEvent.KEYCODE_6: 3362 // 5: dump the dom tree to the file 3363 // "/data/data/com.android.browser/domTree.txt" 3364 // 6: dump the dom tree to the adb log 3365 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, 3366 (keyCode == KeyEvent.KEYCODE_5) ? 1 : 0, 0); 3367 break; 3368 case KeyEvent.KEYCODE_7: 3369 case KeyEvent.KEYCODE_8: 3370 // 7: dump the render tree to the file 3371 // "/data/data/com.android.browser/renderTree.txt" 3372 // 8: dump the render tree to the adb log 3373 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, 3374 (keyCode == KeyEvent.KEYCODE_7) ? 1 : 0, 0); 3375 break; 3376 case KeyEvent.KEYCODE_9: 3377 nativeInstrumentReport(); 3378 return true; 3379 } 3380 } 3381 3382 if (nativeCursorIsPlugin()) { 3383 nativeUpdatePluginReceivesEvents(); 3384 invalidate(); 3385 } else if (nativeCursorIsTextInput()) { 3386 // This message will put the node in focus, for the DOM's notion 3387 // of focus, and make the focuscontroller active 3388 mWebViewCore.sendMessage(EventHub.CLICK); 3389 // This will bring up the WebTextView and put it in focus, for 3390 // our view system's notion of focus 3391 rebuildWebTextView(); 3392 // Now we need to pass the event to it 3393 return mWebTextView.onKeyDown(keyCode, event); 3394 } else if (nativeHasFocusNode()) { 3395 // In this case, the cursor is not on a text input, but the focus 3396 // might be. Check it, and if so, hand over to the WebTextView. 3397 rebuildWebTextView(); 3398 if (inEditingMode()) { 3399 return mWebTextView.onKeyDown(keyCode, event); 3400 } 3401 } 3402 3403 // TODO: should we pass all the keys to DOM or check the meta tag 3404 if (nativeCursorWantsKeyEvents() || true) { 3405 // pass the key to DOM 3406 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3407 // return true as DOM handles the key 3408 return true; 3409 } 3410 3411 // Bubble up the key event as WebView doesn't handle it 3412 return false; 3413 } 3414 3415 @Override 3416 public boolean onKeyUp(int keyCode, KeyEvent event) { 3417 if (DebugFlags.WEB_VIEW) { 3418 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3419 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3420 } 3421 3422 if (mNativeClass == 0) { 3423 return false; 3424 } 3425 3426 // special CALL handling when cursor node's href is "tel:XXX" 3427 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3428 String text = nativeCursorText(); 3429 if (!nativeCursorIsTextInput() && text != null 3430 && text.startsWith(SCHEME_TEL)) { 3431 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3432 getContext().startActivity(intent); 3433 return true; 3434 } 3435 } 3436 3437 // Bubble up the key event if 3438 // 1. it is a system key; or 3439 // 2. the host application wants to handle it; 3440 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3441 return false; 3442 } 3443 3444 // special handling in scroll_zoom state 3445 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 3446 if (KeyEvent.KEYCODE_DPAD_CENTER == keyCode 3447 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN) { 3448 setZoomScrollIn(); 3449 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 3450 invalidate(); 3451 return true; 3452 } 3453 return false; 3454 } 3455 3456 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3457 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3458 if (commitCopy()) { 3459 return true; 3460 } 3461 } 3462 3463 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3464 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3465 // always handle the navigation keys in the UI thread 3466 // Bubble up the key event as WebView doesn't handle it 3467 return false; 3468 } 3469 3470 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3471 // remove the long press message first 3472 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3473 mGotCenterDown = false; 3474 3475 if (mShiftIsPressed) { 3476 return false; 3477 } 3478 if (getSettings().supportZoom() 3479 && mTouchMode == TOUCH_DOUBLECLICK_MODE) { 3480 zoomScrollOut(); 3481 } else { 3482 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3483 .obtainMessage(SWITCH_TO_CLICK), TAP_TIMEOUT); 3484 if (DebugFlags.WEB_VIEW) { 3485 Log.v(LOGTAG, "TOUCH_DOUBLECLICK_MODE"); 3486 } 3487 mTouchMode = TOUCH_DOUBLECLICK_MODE; 3488 } 3489 return true; 3490 } 3491 3492 // TODO: should we pass all the keys to DOM or check the meta tag 3493 if (nativeCursorWantsKeyEvents() || true) { 3494 // pass the key to DOM 3495 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3496 // return true as DOM handles the key 3497 return true; 3498 } 3499 3500 // Bubble up the key event as WebView doesn't handle it 3501 return false; 3502 } 3503 3504 /** 3505 * @hide 3506 */ 3507 public void emulateShiftHeld() { 3508 mExtendSelection = false; 3509 mShiftIsPressed = true; 3510 nativeHideCursor(); 3511 } 3512 3513 private boolean commitCopy() { 3514 boolean copiedSomething = false; 3515 if (mExtendSelection) { 3516 // copy region so core operates on copy without touching orig. 3517 Region selection = new Region(nativeGetSelection()); 3518 if (selection.isEmpty() == false) { 3519 Toast.makeText(mContext 3520 , com.android.internal.R.string.text_copied 3521 , Toast.LENGTH_SHORT).show(); 3522 mWebViewCore.sendMessage(EventHub.GET_SELECTION, selection); 3523 copiedSomething = true; 3524 } 3525 mExtendSelection = false; 3526 } 3527 mShiftIsPressed = false; 3528 if (mTouchMode == TOUCH_SELECT_MODE) { 3529 mTouchMode = TOUCH_INIT_MODE; 3530 } 3531 return copiedSomething; 3532 } 3533 3534 // Set this as a hierarchy change listener so we can know when this view 3535 // is removed and still have access to our parent. 3536 @Override 3537 protected void onAttachedToWindow() { 3538 super.onAttachedToWindow(); 3539 ViewParent parent = getParent(); 3540 if (parent instanceof ViewGroup) { 3541 ViewGroup p = (ViewGroup) parent; 3542 p.setOnHierarchyChangeListener(this); 3543 } 3544 } 3545 3546 @Override 3547 protected void onDetachedFromWindow() { 3548 super.onDetachedFromWindow(); 3549 ViewParent parent = getParent(); 3550 if (parent instanceof ViewGroup) { 3551 ViewGroup p = (ViewGroup) parent; 3552 p.setOnHierarchyChangeListener(null); 3553 } 3554 3555 // Clean up the zoom controller 3556 mZoomButtonsController.setVisible(false); 3557 } 3558 3559 // Implementation for OnHierarchyChangeListener 3560 public void onChildViewAdded(View parent, View child) {} 3561 3562 public void onChildViewRemoved(View p, View child) { 3563 if (child == this) { 3564 clearTextEntry(); 3565 } 3566 } 3567 3568 /** 3569 * @deprecated WebView should not have implemented 3570 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3571 * does nothing now. 3572 */ 3573 @Deprecated 3574 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3575 } 3576 3577 // To avoid drawing the cursor ring, and remove the TextView when our window 3578 // loses focus. 3579 @Override 3580 public void onWindowFocusChanged(boolean hasWindowFocus) { 3581 if (hasWindowFocus) { 3582 if (hasFocus()) { 3583 // If our window regained focus, and we have focus, then begin 3584 // drawing the cursor ring 3585 mDrawCursorRing = true; 3586 if (mNativeClass != 0) { 3587 nativeRecordButtons(true, false, true); 3588 if (inEditingMode()) { 3589 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3590 } 3591 } 3592 } else { 3593 // If our window gained focus, but we do not have it, do not 3594 // draw the cursor ring. 3595 mDrawCursorRing = false; 3596 // We do not call nativeRecordButtons here because we assume 3597 // that when we lost focus, or window focus, it got called with 3598 // false for the first parameter 3599 } 3600 } else { 3601 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3602 /* 3603 * The zoom controls come in their own window, so our window 3604 * loses focus. Our policy is to not draw the cursor ring if 3605 * our window is not focused, but this is an exception since 3606 * the user can still navigate the web page with the zoom 3607 * controls showing. 3608 */ 3609 // If our window has lost focus, stop drawing the cursor ring 3610 mDrawCursorRing = false; 3611 } 3612 mGotKeyDown = false; 3613 mShiftIsPressed = false; 3614 if (mNativeClass != 0) { 3615 nativeRecordButtons(false, false, true); 3616 } 3617 setFocusControllerInactive(); 3618 } 3619 invalidate(); 3620 super.onWindowFocusChanged(hasWindowFocus); 3621 } 3622 3623 /* 3624 * Pass a message to WebCore Thread, telling the WebCore::Page's 3625 * FocusController to be "inactive" so that it will 3626 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3627 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3628 */ 3629 private void setFocusControllerInactive() { 3630 // Do not need to also check whether mWebViewCore is null, because 3631 // mNativeClass is only set if mWebViewCore is non null 3632 if (mNativeClass == 0) return; 3633 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3634 } 3635 3636 @Override 3637 protected void onFocusChanged(boolean focused, int direction, 3638 Rect previouslyFocusedRect) { 3639 if (DebugFlags.WEB_VIEW) { 3640 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3641 } 3642 if (focused) { 3643 // When we regain focus, if we have window focus, resume drawing 3644 // the cursor ring 3645 if (hasWindowFocus()) { 3646 mDrawCursorRing = true; 3647 if (mNativeClass != 0) { 3648 nativeRecordButtons(true, false, true); 3649 } 3650 //} else { 3651 // The WebView has gained focus while we do not have 3652 // windowfocus. When our window lost focus, we should have 3653 // called nativeRecordButtons(false...) 3654 } 3655 } else { 3656 // When we lost focus, unless focus went to the TextView (which is 3657 // true if we are in editing mode), stop drawing the cursor ring. 3658 if (!inEditingMode()) { 3659 mDrawCursorRing = false; 3660 if (mNativeClass != 0) { 3661 nativeRecordButtons(false, false, true); 3662 } 3663 setFocusControllerInactive(); 3664 } 3665 mGotKeyDown = false; 3666 } 3667 3668 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3669 } 3670 3671 @Override 3672 protected void onSizeChanged(int w, int h, int ow, int oh) { 3673 super.onSizeChanged(w, h, ow, oh); 3674 // Center zooming to the center of the screen. 3675 mZoomCenterX = getViewWidth() * .5f; 3676 mZoomCenterY = getViewHeight() * .5f; 3677 3678 // update mMinZoomScale if the minimum zoom scale is not fixed 3679 if (!mMinZoomScaleFixed) { 3680 mMinZoomScale = (float) getViewWidth() 3681 / Math.max(ZOOM_OUT_WIDTH, mDrawHistory ? mHistoryPicture 3682 .getWidth() : (mZoomOverviewWidth > 0 ? 3683 mZoomOverviewWidth : mContentWidth)); 3684 } 3685 3686 // we always force, in case our height changed, in which case we still 3687 // want to send the notification over to webkit 3688 setNewZoomScale(mActualScale, true); 3689 } 3690 3691 @Override 3692 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3693 super.onScrollChanged(l, t, oldl, oldt); 3694 3695 sendOurVisibleRect(); 3696 } 3697 3698 3699 @Override 3700 public boolean dispatchKeyEvent(KeyEvent event) { 3701 boolean dispatch = true; 3702 3703 if (!inEditingMode()) { 3704 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3705 mGotKeyDown = true; 3706 } else { 3707 if (!mGotKeyDown) { 3708 /* 3709 * We got a key up for which we were not the recipient of 3710 * the original key down. Don't give it to the view. 3711 */ 3712 dispatch = false; 3713 } 3714 mGotKeyDown = false; 3715 } 3716 } 3717 3718 if (dispatch) { 3719 return super.dispatchKeyEvent(event); 3720 } else { 3721 // We didn't dispatch, so let something else handle the key 3722 return false; 3723 } 3724 } 3725 3726 // Here are the snap align logic: 3727 // 1. If it starts nearly horizontally or vertically, snap align; 3728 // 2. If there is a dramitic direction change, let it go; 3729 // 3. If there is a same direction back and forth, lock it. 3730 3731 // adjustable parameters 3732 private int mMinLockSnapReverseDistance; 3733 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 3734 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 3735 3736 @Override 3737 public boolean onTouchEvent(MotionEvent ev) { 3738 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 3739 return false; 3740 } 3741 3742 if (DebugFlags.WEB_VIEW) { 3743 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 3744 + mTouchMode); 3745 } 3746 3747 int action = ev.getAction(); 3748 float x = ev.getX(); 3749 float y = ev.getY(); 3750 long eventTime = ev.getEventTime(); 3751 3752 // Due to the touch screen edge effect, a touch closer to the edge 3753 // always snapped to the edge. As getViewWidth() can be different from 3754 // getWidth() due to the scrollbar, adjusting the point to match 3755 // getViewWidth(). Same applied to the height. 3756 if (x > getViewWidth() - 1) { 3757 x = getViewWidth() - 1; 3758 } 3759 if (y > getViewHeight() - 1) { 3760 y = getViewHeight() - 1; 3761 } 3762 3763 // pass the touch events from UI thread to WebCore thread 3764 if (mForwardTouchEvents && mTouchMode != SCROLL_ZOOM_OUT 3765 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN 3766 && mTouchMode != SCROLL_ZOOM_ANIMATION_OUT 3767 && (action != MotionEvent.ACTION_MOVE || 3768 eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 3769 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 3770 ted.mAction = action; 3771 ted.mX = viewToContent((int) x + mScrollX); 3772 ted.mY = viewToContent((int) y + mScrollY); 3773 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 3774 mLastSentTouchTime = eventTime; 3775 } 3776 3777 int deltaX = (int) (mLastTouchX - x); 3778 int deltaY = (int) (mLastTouchY - y); 3779 3780 switch (action) { 3781 case MotionEvent.ACTION_DOWN: { 3782 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3783 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3784 // no interaction while animation is in progress 3785 break; 3786 } else if (mTouchMode == SCROLL_ZOOM_OUT) { 3787 mLastScrollX = mZoomScrollX; 3788 mLastScrollY = mZoomScrollY; 3789 // If two taps are close, ignore the first tap 3790 } else if (!mScroller.isFinished()) { 3791 mScroller.abortAnimation(); 3792 mTouchMode = TOUCH_DRAG_START_MODE; 3793 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 3794 } else if (mShiftIsPressed) { 3795 mSelectX = mScrollX + (int) x; 3796 mSelectY = mScrollY + (int) y; 3797 mTouchMode = TOUCH_SELECT_MODE; 3798 if (DebugFlags.WEB_VIEW) { 3799 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 3800 } 3801 nativeMoveSelection(viewToContent(mSelectX) 3802 , viewToContent(mSelectY), false); 3803 mTouchSelection = mExtendSelection = true; 3804 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 3805 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 3806 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 3807 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 3808 } else { 3809 // commit the short press action for the previous tap 3810 doShortPress(); 3811 // continue, mTouchMode should be still TOUCH_INIT_MODE 3812 } 3813 } else { 3814 mTouchMode = TOUCH_INIT_MODE; 3815 mPreventDrag = mForwardTouchEvents; 3816 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 3817 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 3818 (eventTime - mLastTouchUpTime), eventTime); 3819 } 3820 } 3821 // Trigger the link 3822 if (mTouchMode == TOUCH_INIT_MODE 3823 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3824 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3825 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 3826 } 3827 // Remember where the motion event started 3828 mLastTouchX = x; 3829 mLastTouchY = y; 3830 mLastTouchTime = eventTime; 3831 mVelocityTracker = VelocityTracker.obtain(); 3832 mSnapScrollMode = SNAP_NONE; 3833 break; 3834 } 3835 case MotionEvent.ACTION_MOVE: { 3836 if (mTouchMode == TOUCH_DONE_MODE 3837 || mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3838 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3839 // no dragging during scroll zoom animation 3840 break; 3841 } 3842 if (mTouchMode == SCROLL_ZOOM_OUT) { 3843 // while fully zoomed out, move the virtual window 3844 moveZoomScrollWindow(x, y); 3845 break; 3846 } 3847 mVelocityTracker.addMovement(ev); 3848 3849 if (mTouchMode != TOUCH_DRAG_MODE) { 3850 if (mTouchMode == TOUCH_SELECT_MODE) { 3851 mSelectX = mScrollX + (int) x; 3852 mSelectY = mScrollY + (int) y; 3853 if (DebugFlags.WEB_VIEW) { 3854 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 3855 } 3856 nativeMoveSelection(viewToContent(mSelectX) 3857 , viewToContent(mSelectY), true); 3858 invalidate(); 3859 break; 3860 } 3861 if (mPreventDrag || (deltaX * deltaX + deltaY * deltaY) 3862 < mTouchSlopSquare) { 3863 break; 3864 } 3865 3866 if (mTouchMode == TOUCH_SHORTPRESS_MODE 3867 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3868 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3869 } else if (mTouchMode == TOUCH_INIT_MODE 3870 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3871 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3872 } 3873 3874 // if it starts nearly horizontal or vertical, enforce it 3875 int ax = Math.abs(deltaX); 3876 int ay = Math.abs(deltaY); 3877 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 3878 mSnapScrollMode = SNAP_X; 3879 mSnapPositive = deltaX > 0; 3880 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 3881 mSnapScrollMode = SNAP_Y; 3882 mSnapPositive = deltaY > 0; 3883 } 3884 3885 mTouchMode = TOUCH_DRAG_MODE; 3886 WebViewCore.pauseUpdate(mWebViewCore); 3887 if (!mDragFromTextInput) { 3888 nativeHideCursor(); 3889 } 3890 WebSettings settings = getSettings(); 3891 if (settings.supportZoom() && !mInZoomOverview 3892 && settings.getBuiltInZoomControls() 3893 && !mZoomButtonsController.isVisible() 3894 && (canZoomScrollOut() || 3895 mMinZoomScale < mMaxZoomScale)) { 3896 mZoomButtonsController.setVisible(true); 3897 } 3898 } 3899 3900 // do pan 3901 int newScrollX = pinLocX(mScrollX + deltaX); 3902 deltaX = newScrollX - mScrollX; 3903 int newScrollY = pinLocY(mScrollY + deltaY); 3904 deltaY = newScrollY - mScrollY; 3905 boolean done = false; 3906 if (deltaX == 0 && deltaY == 0) { 3907 done = true; 3908 } else { 3909 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 3910 int ax = Math.abs(deltaX); 3911 int ay = Math.abs(deltaY); 3912 if (mSnapScrollMode == SNAP_X) { 3913 // radical change means getting out of snap mode 3914 if (ay > MAX_SLOPE_FOR_DIAG * ax 3915 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3916 mSnapScrollMode = SNAP_NONE; 3917 } 3918 // reverse direction means lock in the snap mode 3919 if ((ax > MAX_SLOPE_FOR_DIAG * ay) && 3920 ((mSnapPositive && 3921 deltaX < -mMinLockSnapReverseDistance) 3922 || (!mSnapPositive && 3923 deltaX > mMinLockSnapReverseDistance))) { 3924 mSnapScrollMode = SNAP_X_LOCK; 3925 } 3926 } else { 3927 // radical change means getting out of snap mode 3928 if ((ax > MAX_SLOPE_FOR_DIAG * ay) 3929 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3930 mSnapScrollMode = SNAP_NONE; 3931 } 3932 // reverse direction means lock in the snap mode 3933 if ((ay > MAX_SLOPE_FOR_DIAG * ax) && 3934 ((mSnapPositive && 3935 deltaY < -mMinLockSnapReverseDistance) 3936 || (!mSnapPositive && 3937 deltaY > mMinLockSnapReverseDistance))) { 3938 mSnapScrollMode = SNAP_Y_LOCK; 3939 } 3940 } 3941 } 3942 3943 if (mSnapScrollMode == SNAP_X 3944 || mSnapScrollMode == SNAP_X_LOCK) { 3945 scrollBy(deltaX, 0); 3946 mLastTouchX = x; 3947 } else if (mSnapScrollMode == SNAP_Y 3948 || mSnapScrollMode == SNAP_Y_LOCK) { 3949 scrollBy(0, deltaY); 3950 mLastTouchY = y; 3951 } else { 3952 scrollBy(deltaX, deltaY); 3953 mLastTouchX = x; 3954 mLastTouchY = y; 3955 } 3956 mLastTouchTime = eventTime; 3957 mUserScroll = true; 3958 } 3959 3960 if (!getSettings().getBuiltInZoomControls() && !mInZoomOverview) { 3961 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 3962 boolean showMagnify = canZoomScrollOut(); 3963 if (mZoomControls != null && (showPlusMinus || showMagnify)) { 3964 if (mZoomControls.getVisibility() == View.VISIBLE) { 3965 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 3966 } else { 3967 mZoomControls.show(showPlusMinus, showMagnify); 3968 } 3969 mPrivateHandler.postDelayed(mZoomControlRunnable, 3970 ZOOM_CONTROLS_TIMEOUT); 3971 } 3972 } 3973 3974 if (done) { 3975 // return false to indicate that we can't pan out of the 3976 // view space 3977 return false; 3978 } 3979 break; 3980 } 3981 case MotionEvent.ACTION_UP: { 3982 mLastTouchUpTime = eventTime; 3983 switch (mTouchMode) { 3984 case TOUCH_DOUBLE_TAP_MODE: // double tap 3985 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3986 doDoubleTap(); 3987 break; 3988 case TOUCH_INIT_MODE: // tap 3989 if (ENABLE_DOUBLETAP_ZOOM) { 3990 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3991 if (!mPreventDrag) { 3992 mPrivateHandler.sendMessageDelayed( 3993 mPrivateHandler.obtainMessage( 3994 RELEASE_SINGLE_TAP), 3995 ViewConfiguration.getDoubleTapTimeout()); 3996 } 3997 break; 3998 } 3999 // fall through 4000 case TOUCH_SHORTPRESS_START_MODE: 4001 case TOUCH_SHORTPRESS_MODE: 4002 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4003 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4004 mTouchMode = TOUCH_DONE_MODE; 4005 doShortPress(); 4006 break; 4007 case TOUCH_SELECT_MODE: 4008 commitCopy(); 4009 mTouchSelection = false; 4010 break; 4011 case SCROLL_ZOOM_ANIMATION_IN: 4012 case SCROLL_ZOOM_ANIMATION_OUT: 4013 // no action during scroll animation 4014 break; 4015 case SCROLL_ZOOM_OUT: 4016 if (DebugFlags.WEB_VIEW) { 4017 Log.v(LOGTAG, "ACTION_UP SCROLL_ZOOM_OUT" 4018 + " eventTime - mLastTouchTime=" 4019 + (eventTime - mLastTouchTime)); 4020 } 4021 // for now, always zoom back when the drag completes 4022 if (true || eventTime - mLastTouchTime < TAP_TIMEOUT) { 4023 // but if we tap, zoom in where we tap 4024 if (eventTime - mLastTouchTime < TAP_TIMEOUT) { 4025 zoomScrollTap(x, y); 4026 } 4027 // start zooming in back to the original view 4028 setZoomScrollIn(); 4029 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 4030 invalidate(); 4031 } 4032 break; 4033 case TOUCH_DRAG_MODE: 4034 // if the user waits a while w/o moving before the 4035 // up, we don't want to do a fling 4036 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4037 mVelocityTracker.addMovement(ev); 4038 doFling(); 4039 break; 4040 } 4041 WebViewCore.resumeUpdate(mWebViewCore); 4042 break; 4043 case TOUCH_DRAG_START_MODE: 4044 case TOUCH_DONE_MODE: 4045 // do nothing 4046 break; 4047 } 4048 // we also use mVelocityTracker == null to tell us that we are 4049 // not "moving around", so we can take the slower/prettier 4050 // mode in the drawing code 4051 if (mVelocityTracker != null) { 4052 mVelocityTracker.recycle(); 4053 mVelocityTracker = null; 4054 } 4055 break; 4056 } 4057 case MotionEvent.ACTION_CANCEL: { 4058 // we also use mVelocityTracker == null to tell us that we are 4059 // not "moving around", so we can take the slower/prettier 4060 // mode in the drawing code 4061 if (mVelocityTracker != null) { 4062 mVelocityTracker.recycle(); 4063 mVelocityTracker = null; 4064 } 4065 if (mTouchMode == SCROLL_ZOOM_OUT || 4066 mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 4067 scrollTo(mZoomScrollX, mZoomScrollY); 4068 } else if (mTouchMode == TOUCH_DRAG_MODE) { 4069 WebViewCore.resumeUpdate(mWebViewCore); 4070 } 4071 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4072 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4073 mTouchMode = TOUCH_DONE_MODE; 4074 nativeHideCursor(); 4075 break; 4076 } 4077 } 4078 return true; 4079 } 4080 4081 private long mTrackballFirstTime = 0; 4082 private long mTrackballLastTime = 0; 4083 private float mTrackballRemainsX = 0.0f; 4084 private float mTrackballRemainsY = 0.0f; 4085 private int mTrackballXMove = 0; 4086 private int mTrackballYMove = 0; 4087 private boolean mExtendSelection = false; 4088 private boolean mTouchSelection = false; 4089 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4090 private static final int TRACKBALL_TIMEOUT = 200; 4091 private static final int TRACKBALL_WAIT = 100; 4092 private static final int TRACKBALL_SCALE = 400; 4093 private static final int TRACKBALL_SCROLL_COUNT = 5; 4094 private static final int TRACKBALL_MOVE_COUNT = 10; 4095 private static final int TRACKBALL_MULTIPLIER = 3; 4096 private static final int SELECT_CURSOR_OFFSET = 16; 4097 private int mSelectX = 0; 4098 private int mSelectY = 0; 4099 private boolean mShiftIsPressed = false; 4100 private boolean mTrackballDown = false; 4101 private long mTrackballUpTime = 0; 4102 private long mLastCursorTime = 0; 4103 private Rect mLastCursorBounds; 4104 4105 // Set by default; BrowserActivity clears to interpret trackball data 4106 // directly for movement. Currently, the framework only passes 4107 // arrow key events, not trackball events, from one child to the next 4108 private boolean mMapTrackballToArrowKeys = true; 4109 4110 public void setMapTrackballToArrowKeys(boolean setMap) { 4111 mMapTrackballToArrowKeys = setMap; 4112 } 4113 4114 void resetTrackballTime() { 4115 mTrackballLastTime = 0; 4116 } 4117 4118 @Override 4119 public boolean onTrackballEvent(MotionEvent ev) { 4120 long time = ev.getEventTime(); 4121 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4122 if (ev.getY() > 0) pageDown(true); 4123 if (ev.getY() < 0) pageUp(true); 4124 return true; 4125 } 4126 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4127 mPrivateHandler.removeMessages(SWITCH_TO_CLICK); 4128 mTrackballDown = true; 4129 if (mNativeClass == 0) { 4130 return false; 4131 } 4132 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4133 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4134 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4135 nativeSelectBestAt(mLastCursorBounds); 4136 } 4137 if (DebugFlags.WEB_VIEW) { 4138 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4139 + " time=" + time 4140 + " mLastCursorTime=" + mLastCursorTime); 4141 } 4142 if (isInTouchMode()) requestFocusFromTouch(); 4143 return false; // let common code in onKeyDown at it 4144 } 4145 if (ev.getAction() == MotionEvent.ACTION_UP) { 4146 // LONG_PRESS_CENTER is set in common onKeyDown 4147 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4148 mTrackballDown = false; 4149 mTrackballUpTime = time; 4150 if (mShiftIsPressed) { 4151 if (mExtendSelection) { 4152 commitCopy(); 4153 } else { 4154 mExtendSelection = true; 4155 } 4156 } 4157 if (DebugFlags.WEB_VIEW) { 4158 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4159 + " time=" + time 4160 ); 4161 } 4162 return false; // let common code in onKeyUp at it 4163 } 4164 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4165 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4166 return false; 4167 } 4168 // no move if we're still waiting on SWITCH_TO_CLICK timeout 4169 if (mTouchMode == TOUCH_DOUBLECLICK_MODE) { 4170 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent 2 click quit"); 4171 return true; 4172 } 4173 if (mTrackballDown) { 4174 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4175 return true; // discard move if trackball is down 4176 } 4177 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4178 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4179 return true; 4180 } 4181 // TODO: alternatively we can do panning as touch does 4182 switchOutDrawHistory(); 4183 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4184 if (DebugFlags.WEB_VIEW) { 4185 Log.v(LOGTAG, "onTrackballEvent time=" 4186 + time + " last=" + mTrackballLastTime); 4187 } 4188 mTrackballFirstTime = time; 4189 mTrackballXMove = mTrackballYMove = 0; 4190 } 4191 mTrackballLastTime = time; 4192 if (DebugFlags.WEB_VIEW) { 4193 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4194 } 4195 mTrackballRemainsX += ev.getX(); 4196 mTrackballRemainsY += ev.getY(); 4197 doTrackball(time); 4198 return true; 4199 } 4200 4201 void moveSelection(float xRate, float yRate) { 4202 if (mNativeClass == 0) 4203 return; 4204 int width = getViewWidth(); 4205 int height = getViewHeight(); 4206 mSelectX += scaleTrackballX(xRate, width); 4207 mSelectY += scaleTrackballY(yRate, height); 4208 int maxX = width + mScrollX; 4209 int maxY = height + mScrollY; 4210 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4211 , mSelectX)); 4212 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4213 , mSelectY)); 4214 if (DebugFlags.WEB_VIEW) { 4215 Log.v(LOGTAG, "moveSelection" 4216 + " mSelectX=" + mSelectX 4217 + " mSelectY=" + mSelectY 4218 + " mScrollX=" + mScrollX 4219 + " mScrollY=" + mScrollY 4220 + " xRate=" + xRate 4221 + " yRate=" + yRate 4222 ); 4223 } 4224 nativeMoveSelection(viewToContent(mSelectX) 4225 , viewToContent(mSelectY), mExtendSelection); 4226 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4227 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4228 : 0; 4229 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4230 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4231 : 0; 4232 pinScrollBy(scrollX, scrollY, true, 0); 4233 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4234 requestRectangleOnScreen(select); 4235 invalidate(); 4236 } 4237 4238 private int scaleTrackballX(float xRate, int width) { 4239 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4240 int nextXMove = xMove; 4241 if (xMove > 0) { 4242 if (xMove > mTrackballXMove) { 4243 xMove -= mTrackballXMove; 4244 } 4245 } else if (xMove < mTrackballXMove) { 4246 xMove -= mTrackballXMove; 4247 } 4248 mTrackballXMove = nextXMove; 4249 return xMove; 4250 } 4251 4252 private int scaleTrackballY(float yRate, int height) { 4253 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4254 int nextYMove = yMove; 4255 if (yMove > 0) { 4256 if (yMove > mTrackballYMove) { 4257 yMove -= mTrackballYMove; 4258 } 4259 } else if (yMove < mTrackballYMove) { 4260 yMove -= mTrackballYMove; 4261 } 4262 mTrackballYMove = nextYMove; 4263 return yMove; 4264 } 4265 4266 private int keyCodeToSoundsEffect(int keyCode) { 4267 switch(keyCode) { 4268 case KeyEvent.KEYCODE_DPAD_UP: 4269 return SoundEffectConstants.NAVIGATION_UP; 4270 case KeyEvent.KEYCODE_DPAD_RIGHT: 4271 return SoundEffectConstants.NAVIGATION_RIGHT; 4272 case KeyEvent.KEYCODE_DPAD_DOWN: 4273 return SoundEffectConstants.NAVIGATION_DOWN; 4274 case KeyEvent.KEYCODE_DPAD_LEFT: 4275 return SoundEffectConstants.NAVIGATION_LEFT; 4276 } 4277 throw new IllegalArgumentException("keyCode must be one of " + 4278 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4279 "KEYCODE_DPAD_LEFT}."); 4280 } 4281 4282 private void doTrackball(long time) { 4283 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4284 if (elapsed == 0) { 4285 elapsed = TRACKBALL_TIMEOUT; 4286 } 4287 float xRate = mTrackballRemainsX * 1000 / elapsed; 4288 float yRate = mTrackballRemainsY * 1000 / elapsed; 4289 if (mShiftIsPressed) { 4290 moveSelection(xRate, yRate); 4291 mTrackballRemainsX = mTrackballRemainsY = 0; 4292 return; 4293 } 4294 float ax = Math.abs(xRate); 4295 float ay = Math.abs(yRate); 4296 float maxA = Math.max(ax, ay); 4297 if (DebugFlags.WEB_VIEW) { 4298 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4299 + " xRate=" + xRate 4300 + " yRate=" + yRate 4301 + " mTrackballRemainsX=" + mTrackballRemainsX 4302 + " mTrackballRemainsY=" + mTrackballRemainsY); 4303 } 4304 int width = mContentWidth - getViewWidth(); 4305 int height = mContentHeight - getViewHeight(); 4306 if (width < 0) width = 0; 4307 if (height < 0) height = 0; 4308 if (mTouchMode == SCROLL_ZOOM_OUT) { 4309 int oldX = mZoomScrollX; 4310 int oldY = mZoomScrollY; 4311 int maxWH = Math.max(width, height); 4312 mZoomScrollX += scaleTrackballX(xRate, maxWH); 4313 mZoomScrollY += scaleTrackballY(yRate, maxWH); 4314 if (DebugFlags.WEB_VIEW) { 4315 Log.v(LOGTAG, "doTrackball SCROLL_ZOOM_OUT" 4316 + " mZoomScrollX=" + mZoomScrollX 4317 + " mZoomScrollY=" + mZoomScrollY); 4318 } 4319 mZoomScrollX = Math.min(width, Math.max(0, mZoomScrollX)); 4320 mZoomScrollY = Math.min(height, Math.max(0, mZoomScrollY)); 4321 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 4322 invalidate(); 4323 } 4324 mTrackballRemainsX = mTrackballRemainsY = 0; 4325 return; 4326 } 4327 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4328 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4329 maxA = Math.max(ax, ay); 4330 int count = Math.max(0, (int) maxA); 4331 int oldScrollX = mScrollX; 4332 int oldScrollY = mScrollY; 4333 if (count > 0) { 4334 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4335 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4336 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4337 KeyEvent.KEYCODE_DPAD_RIGHT; 4338 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4339 if (DebugFlags.WEB_VIEW) { 4340 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4341 + " count=" + count 4342 + " mTrackballRemainsX=" + mTrackballRemainsX 4343 + " mTrackballRemainsY=" + mTrackballRemainsY); 4344 } 4345 if (navHandledKey(selectKeyCode, count, false, time, false)) { 4346 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4347 } 4348 mTrackballRemainsX = mTrackballRemainsY = 0; 4349 } 4350 if (count >= TRACKBALL_SCROLL_COUNT) { 4351 int xMove = scaleTrackballX(xRate, width); 4352 int yMove = scaleTrackballY(yRate, height); 4353 if (DebugFlags.WEB_VIEW) { 4354 Log.v(LOGTAG, "doTrackball pinScrollBy" 4355 + " count=" + count 4356 + " xMove=" + xMove + " yMove=" + yMove 4357 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4358 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4359 ); 4360 } 4361 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4362 xMove = 0; 4363 } 4364 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4365 yMove = 0; 4366 } 4367 if (xMove != 0 || yMove != 0) { 4368 pinScrollBy(xMove, yMove, true, 0); 4369 } 4370 mUserScroll = true; 4371 } 4372 } 4373 4374 public void flingScroll(int vx, int vy) { 4375 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4376 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4377 4378 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 4379 invalidate(); 4380 } 4381 4382 private void doFling() { 4383 if (mVelocityTracker == null) { 4384 return; 4385 } 4386 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4387 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4388 4389 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 4390 int vx = (int) mVelocityTracker.getXVelocity(); 4391 int vy = (int) mVelocityTracker.getYVelocity(); 4392 4393 if (mSnapScrollMode != SNAP_NONE) { 4394 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_X_LOCK) { 4395 vy = 0; 4396 } else { 4397 vx = 0; 4398 } 4399 } 4400 4401 if (true /* EMG release: make our fling more like Maps' */) { 4402 // maps cuts their velocity in half 4403 vx = vx * 3 / 4; 4404 vy = vy * 3 / 4; 4405 } 4406 4407 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 4408 // TODO: duration is calculated based on velocity, if the range is 4409 // small, the animation will stop before duration is up. We may 4410 // want to calculate how long the animation is going to run to precisely 4411 // resume the webcore update. 4412 final int time = mScroller.getDuration(); 4413 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_UPDATE, time); 4414 invalidate(); 4415 } 4416 4417 private boolean zoomWithPreview(float scale) { 4418 float oldScale = mActualScale; 4419 mInitialScrollX = mScrollX; 4420 mInitialScrollY = mScrollY; 4421 4422 // snap to DEFAULT_SCALE if it is close 4423 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 4424 scale = mDefaultScale; 4425 } 4426 4427 setNewZoomScale(scale, false); 4428 4429 if (oldScale != mActualScale) { 4430 // use mZoomPickerScale to see zoom preview first 4431 mZoomStart = SystemClock.uptimeMillis(); 4432 mInvInitialZoomScale = 1.0f / oldScale; 4433 mInvFinalZoomScale = 1.0f / mActualScale; 4434 mZoomScale = mActualScale; 4435 if (!mInZoomOverview) { 4436 mLastScale = scale; 4437 } 4438 invalidate(); 4439 return true; 4440 } else { 4441 return false; 4442 } 4443 } 4444 4445 /** 4446 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 4447 * in charge of installing this view to the view hierarchy. This view will 4448 * become visible when the user starts scrolling via touch and fade away if 4449 * the user does not interact with it. 4450 * <p/> 4451 * API version 3 introduces a built-in zoom mechanism that is shown 4452 * automatically by the MapView. This is the preferred approach for 4453 * showing the zoom UI. 4454 * 4455 * @deprecated The built-in zoom mechanism is preferred, see 4456 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 4457 */ 4458 @Deprecated 4459 public View getZoomControls() { 4460 if (!getSettings().supportZoom()) { 4461 Log.w(LOGTAG, "This WebView doesn't support zoom."); 4462 return null; 4463 } 4464 if (mZoomControls == null) { 4465 mZoomControls = createZoomControls(); 4466 4467 /* 4468 * need to be set to VISIBLE first so that getMeasuredHeight() in 4469 * {@link #onSizeChanged()} can return the measured value for proper 4470 * layout. 4471 */ 4472 mZoomControls.setVisibility(View.VISIBLE); 4473 mZoomControlRunnable = new Runnable() { 4474 public void run() { 4475 4476 /* Don't dismiss the controls if the user has 4477 * focus on them. Wait and check again later. 4478 */ 4479 if (!mZoomControls.hasFocus()) { 4480 mZoomControls.hide(); 4481 } else { 4482 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4483 mPrivateHandler.postDelayed(mZoomControlRunnable, 4484 ZOOM_CONTROLS_TIMEOUT); 4485 } 4486 } 4487 }; 4488 } 4489 return mZoomControls; 4490 } 4491 4492 private ExtendedZoomControls createZoomControls() { 4493 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 4494 , null); 4495 zoomControls.setOnZoomInClickListener(new OnClickListener() { 4496 public void onClick(View v) { 4497 // reset time out 4498 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4499 mPrivateHandler.postDelayed(mZoomControlRunnable, 4500 ZOOM_CONTROLS_TIMEOUT); 4501 zoomIn(); 4502 } 4503 }); 4504 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 4505 public void onClick(View v) { 4506 // reset time out 4507 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4508 mPrivateHandler.postDelayed(mZoomControlRunnable, 4509 ZOOM_CONTROLS_TIMEOUT); 4510 zoomOut(); 4511 } 4512 }); 4513 zoomControls.setOnZoomMagnifyClickListener(new OnClickListener() { 4514 public void onClick(View v) { 4515 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4516 mPrivateHandler.postDelayed(mZoomControlRunnable, 4517 ZOOM_CONTROLS_TIMEOUT); 4518 zoomScrollOut(); 4519 } 4520 }); 4521 return zoomControls; 4522 } 4523 4524 /** 4525 * Gets the {@link ZoomButtonsController} which can be used to add 4526 * additional buttons to the zoom controls window. 4527 * 4528 * @return The instance of {@link ZoomButtonsController} used by this class, 4529 * or null if it is unavailable. 4530 * @hide 4531 */ 4532 public ZoomButtonsController getZoomButtonsController() { 4533 return mZoomButtonsController; 4534 } 4535 4536 /** 4537 * Perform zoom in in the webview 4538 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 4539 */ 4540 public boolean zoomIn() { 4541 // TODO: alternatively we can disallow this during draw history mode 4542 switchOutDrawHistory(); 4543 // Center zooming to the center of the screen. 4544 mZoomCenterX = getViewWidth() * .5f; 4545 mZoomCenterY = getViewHeight() * .5f; 4546 return zoomWithPreview(mActualScale * 1.25f); 4547 } 4548 4549 /** 4550 * Perform zoom out in the webview 4551 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 4552 */ 4553 public boolean zoomOut() { 4554 // TODO: alternatively we can disallow this during draw history mode 4555 switchOutDrawHistory(); 4556 // Center zooming to the center of the screen. 4557 mZoomCenterX = getViewWidth() * .5f; 4558 mZoomCenterY = getViewHeight() * .5f; 4559 return zoomWithPreview(mActualScale * 0.8f); 4560 } 4561 4562 private void updateSelection() { 4563 if (mNativeClass == 0) { 4564 return; 4565 } 4566 // mLastTouchX and mLastTouchY are the point in the current viewport 4567 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4568 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4569 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 4570 contentX + mNavSlop, contentY + mNavSlop); 4571 nativeSelectBestAt(rect); 4572 } 4573 4574 /** 4575 * Scroll the focused text field/area to match the WebTextView 4576 * @param x New x position of the WebTextView in view coordinates 4577 * @param y New y position of the WebTextView in view coordinates 4578 */ 4579 /*package*/ void scrollFocusedTextInput(int x, int y) { 4580 if (!inEditingMode() || mWebViewCore == null) { 4581 return; 4582 } 4583 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, viewToContent(x), 4584 viewToContent(y)); 4585 } 4586 4587 /** 4588 * Set our starting point and time for a drag from the WebTextView. 4589 */ 4590 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 4591 if (!inEditingMode()) { 4592 return; 4593 } 4594 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 4595 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 4596 mLastTouchTime = eventTime; 4597 if (!mScroller.isFinished()) { 4598 mScroller.abortAnimation(); 4599 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 4600 } 4601 mSnapScrollMode = SNAP_NONE; 4602 mVelocityTracker = VelocityTracker.obtain(); 4603 mTouchMode = TOUCH_DRAG_START_MODE; 4604 } 4605 4606 /** 4607 * Given a motion event from the WebTextView, set its location to our 4608 * coordinates, and handle the event. 4609 */ 4610 /*package*/ boolean textFieldDrag(MotionEvent event) { 4611 if (!inEditingMode()) { 4612 return false; 4613 } 4614 mDragFromTextInput = true; 4615 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 4616 (float) (mWebTextView.getTop() - mScrollY)); 4617 boolean result = onTouchEvent(event); 4618 mDragFromTextInput = false; 4619 return result; 4620 } 4621 4622 /*package*/ void shortPressOnTextField() { 4623 if (inEditingMode()) { 4624 View v = mWebTextView; 4625 int x = viewToContent((v.getLeft() + v.getRight()) >> 1); 4626 int y = viewToContent((v.getTop() + v.getBottom()) >> 1); 4627 nativeMotionUp(x, y, mNavSlop); 4628 } 4629 } 4630 4631 private void doShortPress() { 4632 if (mNativeClass == 0) { 4633 return; 4634 } 4635 switchOutDrawHistory(); 4636 // mLastTouchX and mLastTouchY are the point in the current viewport 4637 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4638 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4639 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 4640 if (mLogEvent) { 4641 Checkin.updateStats(mContext.getContentResolver(), 4642 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 4643 } 4644 } 4645 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 4646 playSoundEffect(SoundEffectConstants.CLICK); 4647 } 4648 } 4649 4650 private void doDoubleTap() { 4651 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 4652 return; 4653 } 4654 mZoomCenterX = mLastTouchX; 4655 mZoomCenterY = mLastTouchY; 4656 mInZoomOverview = !mInZoomOverview; 4657 if (mInZoomOverview) { 4658 float newScale = (float) getViewWidth() 4659 / (mZoomOverviewWidth > 0 ? mZoomOverviewWidth 4660 : mContentWidth); 4661 if (Math.abs(newScale - mActualScale) < 0.01) { 4662 mInZoomOverview = !mInZoomOverview; 4663 // as it is already full screen, do nothing. 4664 return; 4665 } 4666 if (getSettings().getBuiltInZoomControls()) { 4667 if (mZoomButtonsController.isVisible()) { 4668 mZoomButtonsController.setVisible(false); 4669 } 4670 } else { 4671 if (mZoomControlRunnable != null) { 4672 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4673 } 4674 if (mZoomControls != null) { 4675 mZoomControls.hide(); 4676 } 4677 } 4678 zoomWithPreview(newScale); 4679 } else { 4680 // mLastTouchX and mLastTouchY are the point in the current viewport 4681 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4682 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4683 int left = nativeGetBlockLeftEdge(contentX, contentY); 4684 if (left != NO_LEFTEDGE) { 4685 // add a 5pt padding to the left edge. Re-calculate the zoom 4686 // center so that the new scroll x will be on the left edge. 4687 mZoomCenterX = left < 5 ? 0 : (left - 5) * mLastScale 4688 * mActualScale / (mLastScale - mActualScale); 4689 } 4690 zoomWithPreview(mLastScale); 4691 } 4692 } 4693 4694 // Called by JNI to handle a touch on a node representing an email address, 4695 // address, or phone number 4696 private void overrideLoading(String url) { 4697 mCallbackProxy.uiOverrideUrlLoading(url); 4698 } 4699 4700 // called by JNI 4701 private void sendPluginState(int state) { 4702 WebViewCore.PluginStateData psd = new WebViewCore.PluginStateData(); 4703 psd.mFrame = nativeCursorFramePointer(); 4704 psd.mNode = nativeCursorNodePointer(); 4705 psd.mState = state; 4706 mWebViewCore.sendMessage(EventHub.PLUGIN_STATE, psd); 4707 } 4708 4709 @Override 4710 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 4711 boolean result = false; 4712 if (inEditingMode()) { 4713 result = mWebTextView.requestFocus(direction, 4714 previouslyFocusedRect); 4715 } else { 4716 result = super.requestFocus(direction, previouslyFocusedRect); 4717 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 4718 // For cases such as GMail, where we gain focus from a direction, 4719 // we want to move to the first available link. 4720 // FIXME: If there are no visible links, we may not want to 4721 int fakeKeyDirection = 0; 4722 switch(direction) { 4723 case View.FOCUS_UP: 4724 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 4725 break; 4726 case View.FOCUS_DOWN: 4727 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 4728 break; 4729 case View.FOCUS_LEFT: 4730 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 4731 break; 4732 case View.FOCUS_RIGHT: 4733 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 4734 break; 4735 default: 4736 return result; 4737 } 4738 if (mNativeClass != 0 && !nativeHasCursorNode()) { 4739 navHandledKey(fakeKeyDirection, 1, true, 0, true); 4740 } 4741 } 4742 } 4743 return result; 4744 } 4745 4746 @Override 4747 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4748 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 4749 4750 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 4751 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 4752 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 4753 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 4754 4755 int measuredHeight = heightSize; 4756 int measuredWidth = widthSize; 4757 4758 // Grab the content size from WebViewCore. 4759 int contentHeight = mContentHeight; 4760 int contentWidth = mContentWidth; 4761 4762// Log.d(LOGTAG, "------- measure " + heightMode); 4763 4764 if (heightMode != MeasureSpec.EXACTLY) { 4765 mHeightCanMeasure = true; 4766 measuredHeight = contentHeight; 4767 if (heightMode == MeasureSpec.AT_MOST) { 4768 // If we are larger than the AT_MOST height, then our height can 4769 // no longer be measured and we should scroll internally. 4770 if (measuredHeight > heightSize) { 4771 measuredHeight = heightSize; 4772 mHeightCanMeasure = false; 4773 } 4774 } 4775 } else { 4776 mHeightCanMeasure = false; 4777 } 4778 if (mNativeClass != 0) { 4779 nativeSetHeightCanMeasure(mHeightCanMeasure); 4780 } 4781 // For the width, always use the given size unless unspecified. 4782 if (widthMode == MeasureSpec.UNSPECIFIED) { 4783 mWidthCanMeasure = true; 4784 measuredWidth = contentWidth; 4785 } else { 4786 mWidthCanMeasure = false; 4787 } 4788 4789 synchronized (this) { 4790 setMeasuredDimension(measuredWidth, measuredHeight); 4791 } 4792 } 4793 4794 @Override 4795 public boolean requestChildRectangleOnScreen(View child, 4796 Rect rect, 4797 boolean immediate) { 4798 rect.offset(child.getLeft() - child.getScrollX(), 4799 child.getTop() - child.getScrollY()); 4800 4801 int height = getHeight() - getHorizontalScrollbarHeight(); 4802 int screenTop = mScrollY; 4803 int screenBottom = screenTop + height; 4804 4805 int scrollYDelta = 0; 4806 4807 if (rect.bottom > screenBottom) { 4808 int oneThirdOfScreenHeight = height / 3; 4809 if (rect.height() > 2 * oneThirdOfScreenHeight) { 4810 // If the rectangle is too tall to fit in the bottom two thirds 4811 // of the screen, place it at the top. 4812 scrollYDelta = rect.top - screenTop; 4813 } else { 4814 // If the rectangle will still fit on screen, we want its 4815 // top to be in the top third of the screen. 4816 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 4817 } 4818 } else if (rect.top < screenTop) { 4819 scrollYDelta = rect.top - screenTop; 4820 } 4821 4822 int width = getWidth() - getVerticalScrollbarWidth(); 4823 int screenLeft = mScrollX; 4824 int screenRight = screenLeft + width; 4825 4826 int scrollXDelta = 0; 4827 4828 if (rect.right > screenRight && rect.left > screenLeft) { 4829 if (rect.width() > width) { 4830 scrollXDelta += (rect.left - screenLeft); 4831 } else { 4832 scrollXDelta += (rect.right - screenRight); 4833 } 4834 } else if (rect.left < screenLeft) { 4835 scrollXDelta -= (screenLeft - rect.left); 4836 } 4837 4838 if ((scrollYDelta | scrollXDelta) != 0) { 4839 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 4840 } 4841 4842 return false; 4843 } 4844 4845 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 4846 String replace, int newStart, int newEnd) { 4847 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 4848 arg.mReplace = replace; 4849 arg.mNewStart = newStart; 4850 arg.mNewEnd = newEnd; 4851 mTextGeneration++; 4852 arg.mTextGeneration = mTextGeneration; 4853 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 4854 } 4855 4856 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 4857 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 4858 mWebViewCore.sendMessage(EventHub.CLICK); 4859 } 4860 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 4861 arg.mEvent = event; 4862 arg.mCurrentText = currentText; 4863 // Increase our text generation number, and pass it to webcore thread 4864 mTextGeneration++; 4865 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 4866 // WebKit's document state is not saved until about to leave the page. 4867 // To make sure the host application, like Browser, has the up to date 4868 // document state when it goes to background, we force to save the 4869 // document state. 4870 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 4871 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 4872 cursorData(), 1000); 4873 } 4874 4875 /* package */ WebViewCore getWebViewCore() { 4876 return mWebViewCore; 4877 } 4878 4879 //------------------------------------------------------------------------- 4880 // Methods can be called from a separate thread, like WebViewCore 4881 // If it needs to call the View system, it has to send message. 4882 //------------------------------------------------------------------------- 4883 4884 /** 4885 * General handler to receive message coming from webkit thread 4886 */ 4887 class PrivateHandler extends Handler { 4888 @Override 4889 public void handleMessage(Message msg) { 4890 if (DebugFlags.WEB_VIEW) { 4891 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 4892 > INVAL_RECT_MSG_ID ? Integer.toString(msg.what) 4893 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 4894 } 4895 switch (msg.what) { 4896 case REMEMBER_PASSWORD: { 4897 mDatabase.setUsernamePassword( 4898 msg.getData().getString("host"), 4899 msg.getData().getString("username"), 4900 msg.getData().getString("password")); 4901 ((Message) msg.obj).sendToTarget(); 4902 break; 4903 } 4904 case NEVER_REMEMBER_PASSWORD: { 4905 mDatabase.setUsernamePassword( 4906 msg.getData().getString("host"), null, null); 4907 ((Message) msg.obj).sendToTarget(); 4908 break; 4909 } 4910 case SWITCH_TO_SHORTPRESS: { 4911 if (mTouchMode == TOUCH_INIT_MODE) { 4912 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 4913 updateSelection(); 4914 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4915 mTouchMode = TOUCH_DONE_MODE; 4916 } 4917 break; 4918 } 4919 case SWITCH_TO_LONGPRESS: { 4920 if (!mPreventDrag) { 4921 mTouchMode = TOUCH_DONE_MODE; 4922 performLongClick(); 4923 rebuildWebTextView(); 4924 } 4925 break; 4926 } 4927 case RELEASE_SINGLE_TAP: { 4928 if (!mPreventDrag) { 4929 mTouchMode = TOUCH_DONE_MODE; 4930 doShortPress(); 4931 } 4932 break; 4933 } 4934 case SWITCH_TO_CLICK: 4935 // The user clicked with the trackball, and did not click a 4936 // second time, so perform the action of a trackball single 4937 // click 4938 mTouchMode = TOUCH_DONE_MODE; 4939 Rect visibleRect = sendOurVisibleRect(); 4940 // Note that sendOurVisibleRect calls viewToContent, so the 4941 // coordinates should be in content coordinates. 4942 if (!nativeCursorIntersects(visibleRect)) { 4943 break; 4944 } 4945 nativeSetFollowedLink(true); 4946 nativeUpdatePluginReceivesEvents(); 4947 WebViewCore.CursorData data = cursorData(); 4948 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4949 playSoundEffect(SoundEffectConstants.CLICK); 4950 boolean isTextInput = nativeCursorIsTextInput(); 4951 if (isTextInput || !mCallbackProxy.uiOverrideUrlLoading( 4952 nativeCursorText())) { 4953 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4954 nativeCursorNodePointer()); 4955 } 4956 if (isTextInput) { 4957 rebuildWebTextView(); 4958 } 4959 break; 4960 case SCROLL_BY_MSG_ID: 4961 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 4962 break; 4963 case SYNC_SCROLL_TO_MSG_ID: 4964 if (mUserScroll) { 4965 // if user has scrolled explicitly, don't sync the 4966 // scroll position any more 4967 mUserScroll = false; 4968 break; 4969 } 4970 // fall through 4971 case SCROLL_TO_MSG_ID: 4972 if (setContentScrollTo(msg.arg1, msg.arg2)) { 4973 // if we can't scroll to the exact position due to pin, 4974 // send a message to WebCore to re-scroll when we get a 4975 // new picture 4976 mUserScroll = false; 4977 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 4978 msg.arg1, msg.arg2); 4979 } 4980 break; 4981 case SPAWN_SCROLL_TO_MSG_ID: 4982 spawnContentScrollTo(msg.arg1, msg.arg2); 4983 break; 4984 case NEW_PICTURE_MSG_ID: 4985 // called for new content 4986 final int viewWidth = getViewWidth(); 4987 final WebViewCore.DrawData draw = 4988 (WebViewCore.DrawData) msg.obj; 4989 final Point viewSize = draw.mViewPoint; 4990 boolean useWideViewport = 4991 mWebViewCore.getSettings().getUseWideViewPort(); 4992 WebViewCore.RestoreState restoreState = draw.mRestoreState; 4993 if (restoreState != null) { 4994 mInZoomOverview = false; 4995 mLastScale = restoreState.mTextWrapScale; 4996 if (restoreState.mMinScale == 0) { 4997 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 4998 mMinZoomScaleFixed = false; 4999 } else { 5000 mMinZoomScale = restoreState.mMinScale; 5001 mMinZoomScaleFixed = true; 5002 } 5003 if (restoreState.mMaxScale == 0) { 5004 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 5005 } else { 5006 mMaxZoomScale = restoreState.mMaxScale; 5007 } 5008 if (useWideViewport && restoreState.mViewScale == 0) { 5009 mInZoomOverview = ENABLE_DOUBLETAP_ZOOM; 5010 } 5011 setNewZoomScale(mLastScale, false); 5012 setContentScrollTo(restoreState.mScrollX, 5013 restoreState.mScrollY); 5014 // As we are on a new page, remove the WebTextView. This 5015 // is necessary for page loads driven by webkit, and in 5016 // particular when the user was on a password field, so 5017 // the WebTextView was visible. 5018 clearTextEntry(); 5019 } 5020 // We update the layout (i.e. request a layout from the 5021 // view system) if the last view size that we sent to 5022 // WebCore matches the view size of the picture we just 5023 // received in the fixed dimension. 5024 final boolean updateLayout = viewSize.x == mLastWidthSent 5025 && viewSize.y == mLastHeightSent; 5026 recordNewContentSize(draw.mWidthHeight.x, 5027 draw.mWidthHeight.y, updateLayout); 5028 if (DebugFlags.WEB_VIEW) { 5029 Rect b = draw.mInvalRegion.getBounds(); 5030 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5031 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5032 } 5033 invalidate(contentToView(draw.mInvalRegion.getBounds())); 5034 if (mPictureListener != null) { 5035 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5036 } 5037 if (useWideViewport) { 5038 mZoomOverviewWidth = Math.max(draw.mMinPrefWidth, 5039 draw.mViewPoint.x); 5040 } 5041 if (!mMinZoomScaleFixed) { 5042 mMinZoomScale = (float) viewWidth 5043 / Math.max(ZOOM_OUT_WIDTH, 5044 mZoomOverviewWidth > 0 ? mZoomOverviewWidth 5045 : mContentWidth); 5046 } 5047 if (!mDrawHistory && mInZoomOverview) { 5048 // fit the content width to the current view. Ignore 5049 // the rounding error case. 5050 if (Math.abs((viewWidth * mInvActualScale) 5051 - mZoomOverviewWidth) > 1) { 5052 zoomWithPreview((float) viewWidth 5053 / mZoomOverviewWidth); 5054 } 5055 } 5056 break; 5057 case WEBCORE_INITIALIZED_MSG_ID: 5058 // nativeCreate sets mNativeClass to a non-zero value 5059 nativeCreate(msg.arg1); 5060 break; 5061 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5062 // Make sure that the textfield is currently focused 5063 // and representing the same node as the pointer. 5064 if (inEditingMode() && 5065 mWebTextView.isSameTextField(msg.arg1)) { 5066 if (msg.getData().getBoolean("password")) { 5067 Spannable text = (Spannable) mWebTextView.getText(); 5068 int start = Selection.getSelectionStart(text); 5069 int end = Selection.getSelectionEnd(text); 5070 mWebTextView.setInPassword(true); 5071 // Restore the selection, which may have been 5072 // ruined by setInPassword. 5073 Spannable pword = 5074 (Spannable) mWebTextView.getText(); 5075 Selection.setSelection(pword, start, end); 5076 // If the text entry has created more events, ignore 5077 // this one. 5078 } else if (msg.arg2 == mTextGeneration) { 5079 mWebTextView.setTextAndKeepSelection( 5080 (String) msg.obj); 5081 } 5082 } 5083 break; 5084 case MOVE_OUT_OF_PLUGIN: 5085 if (nativePluginEatsNavKey()) { 5086 navHandledKey(msg.arg1, 1, false, 0, true); 5087 } 5088 break; 5089 case UPDATE_TEXT_ENTRY_MSG_ID: 5090 // this is sent after finishing resize in WebViewCore. Make 5091 // sure the text edit box is still on the screen. 5092 if (inEditingMode() && nativeCursorIsTextInput()) { 5093 mWebTextView.bringIntoView(); 5094 rebuildWebTextView(); 5095 } 5096 break; 5097 case CLEAR_TEXT_ENTRY: 5098 clearTextEntry(); 5099 break; 5100 case INVAL_RECT_MSG_ID: { 5101 Rect r = (Rect)msg.obj; 5102 if (r == null) { 5103 invalidate(); 5104 } else { 5105 // we need to scale r from content into view coords, 5106 // which viewInvalidate() does for us 5107 viewInvalidate(r.left, r.top, r.right, r.bottom); 5108 } 5109 break; 5110 } 5111 case REQUEST_FORM_DATA: 5112 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5113 if (mWebTextView.isSameTextField(msg.arg1)) { 5114 mWebTextView.setAdapterCustom(adapter); 5115 } 5116 break; 5117 case UPDATE_CLIPBOARD: 5118 String str = (String) msg.obj; 5119 if (DebugFlags.WEB_VIEW) { 5120 Log.v(LOGTAG, "UPDATE_CLIPBOARD " + str); 5121 } 5122 try { 5123 IClipboard clip = IClipboard.Stub.asInterface( 5124 ServiceManager.getService("clipboard")); 5125 clip.setClipboardText(str); 5126 } catch (android.os.RemoteException e) { 5127 Log.e(LOGTAG, "Clipboard failed", e); 5128 } 5129 break; 5130 case RESUME_WEBCORE_UPDATE: 5131 WebViewCore.resumeUpdate(mWebViewCore); 5132 break; 5133 5134 case LONG_PRESS_CENTER: 5135 // as this is shared by keydown and trackballdown, reset all 5136 // the states 5137 mGotCenterDown = false; 5138 mTrackballDown = false; 5139 // LONG_PRESS_CENTER is sent as a delayed message. If we 5140 // switch to windows overview, the WebView will be 5141 // temporarily removed from the view system. In that case, 5142 // do nothing. 5143 if (getParent() != null) { 5144 performLongClick(); 5145 } 5146 break; 5147 5148 case WEBCORE_NEED_TOUCH_EVENTS: 5149 mForwardTouchEvents = (msg.arg1 != 0); 5150 break; 5151 5152 case PREVENT_TOUCH_ID: 5153 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5154 mPreventDrag = msg.arg2 == 1; 5155 if (mPreventDrag) { 5156 mTouchMode = TOUCH_DONE_MODE; 5157 } 5158 } 5159 break; 5160 5161 case REQUEST_KEYBOARD: 5162 if (msg.arg1 == 0) { 5163 hideSoftKeyboard(); 5164 } else { 5165 displaySoftKeyboard(false); 5166 } 5167 break; 5168 5169 default: 5170 super.handleMessage(msg); 5171 break; 5172 } 5173 } 5174 } 5175 5176 // Class used to use a dropdown for a <select> element 5177 private class InvokeListBox implements Runnable { 5178 // Whether the listbox allows multiple selection. 5179 private boolean mMultiple; 5180 // Passed in to a list with multiple selection to tell 5181 // which items are selected. 5182 private int[] mSelectedArray; 5183 // Passed in to a list with single selection to tell 5184 // where the initial selection is. 5185 private int mSelection; 5186 5187 private Container[] mContainers; 5188 5189 // Need these to provide stable ids to my ArrayAdapter, 5190 // which normally does not have stable ids. (Bug 1250098) 5191 private class Container extends Object { 5192 String mString; 5193 boolean mEnabled; 5194 int mId; 5195 5196 public String toString() { 5197 return mString; 5198 } 5199 } 5200 5201 /** 5202 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 5203 * and allow filtering. 5204 */ 5205 private class MyArrayListAdapter extends ArrayAdapter<Container> { 5206 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 5207 super(context, 5208 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 5209 com.android.internal.R.layout.select_dialog_singlechoice, 5210 objects); 5211 } 5212 5213 @Override 5214 public boolean hasStableIds() { 5215 // AdapterView's onChanged method uses this to determine whether 5216 // to restore the old state. Return false so that the old (out 5217 // of date) state does not replace the new, valid state. 5218 return false; 5219 } 5220 5221 private Container item(int position) { 5222 if (position < 0 || position >= getCount()) { 5223 return null; 5224 } 5225 return (Container) getItem(position); 5226 } 5227 5228 @Override 5229 public long getItemId(int position) { 5230 Container item = item(position); 5231 if (item == null) { 5232 return -1; 5233 } 5234 return item.mId; 5235 } 5236 5237 @Override 5238 public boolean areAllItemsEnabled() { 5239 return false; 5240 } 5241 5242 @Override 5243 public boolean isEnabled(int position) { 5244 Container item = item(position); 5245 if (item == null) { 5246 return false; 5247 } 5248 return item.mEnabled; 5249 } 5250 } 5251 5252 private InvokeListBox(String[] array, 5253 boolean[] enabled, int[] selected) { 5254 mMultiple = true; 5255 mSelectedArray = selected; 5256 5257 int length = array.length; 5258 mContainers = new Container[length]; 5259 for (int i = 0; i < length; i++) { 5260 mContainers[i] = new Container(); 5261 mContainers[i].mString = array[i]; 5262 mContainers[i].mEnabled = enabled[i]; 5263 mContainers[i].mId = i; 5264 } 5265 } 5266 5267 private InvokeListBox(String[] array, boolean[] enabled, int 5268 selection) { 5269 mSelection = selection; 5270 mMultiple = false; 5271 5272 int length = array.length; 5273 mContainers = new Container[length]; 5274 for (int i = 0; i < length; i++) { 5275 mContainers[i] = new Container(); 5276 mContainers[i].mString = array[i]; 5277 mContainers[i].mEnabled = enabled[i]; 5278 mContainers[i].mId = i; 5279 } 5280 } 5281 5282 /* 5283 * Whenever the data set changes due to filtering, this class ensures 5284 * that the checked item remains checked. 5285 */ 5286 private class SingleDataSetObserver extends DataSetObserver { 5287 private long mCheckedId; 5288 private ListView mListView; 5289 private Adapter mAdapter; 5290 5291 /* 5292 * Create a new observer. 5293 * @param id The ID of the item to keep checked. 5294 * @param l ListView for getting and clearing the checked states 5295 * @param a Adapter for getting the IDs 5296 */ 5297 public SingleDataSetObserver(long id, ListView l, Adapter a) { 5298 mCheckedId = id; 5299 mListView = l; 5300 mAdapter = a; 5301 } 5302 5303 public void onChanged() { 5304 // The filter may have changed which item is checked. Find the 5305 // item that the ListView thinks is checked. 5306 int position = mListView.getCheckedItemPosition(); 5307 long id = mAdapter.getItemId(position); 5308 if (mCheckedId != id) { 5309 // Clear the ListView's idea of the checked item, since 5310 // it is incorrect 5311 mListView.clearChoices(); 5312 // Search for mCheckedId. If it is in the filtered list, 5313 // mark it as checked 5314 int count = mAdapter.getCount(); 5315 for (int i = 0; i < count; i++) { 5316 if (mAdapter.getItemId(i) == mCheckedId) { 5317 mListView.setItemChecked(i, true); 5318 break; 5319 } 5320 } 5321 } 5322 } 5323 5324 public void onInvalidate() {} 5325 } 5326 5327 public void run() { 5328 final ListView listView = (ListView) LayoutInflater.from(mContext) 5329 .inflate(com.android.internal.R.layout.select_dialog, null); 5330 final MyArrayListAdapter adapter = new 5331 MyArrayListAdapter(mContext, mContainers, mMultiple); 5332 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 5333 .setView(listView).setCancelable(true) 5334 .setInverseBackgroundForced(true); 5335 5336 if (mMultiple) { 5337 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 5338 public void onClick(DialogInterface dialog, int which) { 5339 mWebViewCore.sendMessage( 5340 EventHub.LISTBOX_CHOICES, 5341 adapter.getCount(), 0, 5342 listView.getCheckedItemPositions()); 5343 }}); 5344 b.setNegativeButton(android.R.string.cancel, 5345 new DialogInterface.OnClickListener() { 5346 public void onClick(DialogInterface dialog, int which) { 5347 mWebViewCore.sendMessage( 5348 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5349 }}); 5350 } 5351 final AlertDialog dialog = b.create(); 5352 listView.setAdapter(adapter); 5353 listView.setFocusableInTouchMode(true); 5354 // There is a bug (1250103) where the checks in a ListView with 5355 // multiple items selected are associated with the positions, not 5356 // the ids, so the items do not properly retain their checks when 5357 // filtered. Do not allow filtering on multiple lists until 5358 // that bug is fixed. 5359 5360 listView.setTextFilterEnabled(!mMultiple); 5361 if (mMultiple) { 5362 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 5363 int length = mSelectedArray.length; 5364 for (int i = 0; i < length; i++) { 5365 listView.setItemChecked(mSelectedArray[i], true); 5366 } 5367 } else { 5368 listView.setOnItemClickListener(new OnItemClickListener() { 5369 public void onItemClick(AdapterView parent, View v, 5370 int position, long id) { 5371 mWebViewCore.sendMessage( 5372 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 5373 dialog.dismiss(); 5374 } 5375 }); 5376 if (mSelection != -1) { 5377 listView.setSelection(mSelection); 5378 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 5379 listView.setItemChecked(mSelection, true); 5380 DataSetObserver observer = new SingleDataSetObserver( 5381 adapter.getItemId(mSelection), listView, adapter); 5382 adapter.registerDataSetObserver(observer); 5383 } 5384 } 5385 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 5386 public void onCancel(DialogInterface dialog) { 5387 mWebViewCore.sendMessage( 5388 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5389 } 5390 }); 5391 dialog.show(); 5392 } 5393 } 5394 5395 /* 5396 * Request a dropdown menu for a listbox with multiple selection. 5397 * 5398 * @param array Labels for the listbox. 5399 * @param enabledArray Which positions are enabled. 5400 * @param selectedArray Which positions are initally selected. 5401 */ 5402 void requestListBox(String[] array, boolean[]enabledArray, int[] 5403 selectedArray) { 5404 mPrivateHandler.post( 5405 new InvokeListBox(array, enabledArray, selectedArray)); 5406 } 5407 5408 /* 5409 * Request a dropdown menu for a listbox with single selection or a single 5410 * <select> element. 5411 * 5412 * @param array Labels for the listbox. 5413 * @param enabledArray Which positions are enabled. 5414 * @param selection Which position is initally selected. 5415 */ 5416 void requestListBox(String[] array, boolean[]enabledArray, int selection) { 5417 mPrivateHandler.post( 5418 new InvokeListBox(array, enabledArray, selection)); 5419 } 5420 5421 // called by JNI 5422 private void sendMoveMouse(int frame, int node, int x, int y) { 5423 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 5424 new WebViewCore.CursorData(frame, node, x, y)); 5425 } 5426 5427 /* 5428 * Send a mouse move event to the webcore thread. 5429 * 5430 * @param removeFocus Pass true if the "mouse" cursor is now over a node 5431 * which wants key events, but it is not the focus. This 5432 * will make the visual appear as though nothing is in 5433 * focus. Remove the WebTextView, if present, and stop 5434 * drawing the blinking caret. 5435 * called by JNI 5436 */ 5437 private void sendMoveMouseIfLatest(boolean removeFocus) { 5438 if (removeFocus) { 5439 clearTextEntry(); 5440 setFocusControllerInactive(); 5441 } 5442 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 5443 cursorData()); 5444 } 5445 5446 // called by JNI 5447 private void sendMotionUp(int touchGeneration, 5448 int frame, int node, int x, int y, int size) { 5449 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5450 touchUpData.mMoveGeneration = touchGeneration; 5451 touchUpData.mSize = size; 5452 touchUpData.mFrame = frame; 5453 touchUpData.mNode = node; 5454 touchUpData.mX = x; 5455 touchUpData.mY = y; 5456 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5457 } 5458 5459 5460 private int getScaledMaxXScroll() { 5461 int width; 5462 if (mHeightCanMeasure == false) { 5463 width = getViewWidth() / 4; 5464 } else { 5465 Rect visRect = new Rect(); 5466 calcOurVisibleRect(visRect); 5467 width = visRect.width() / 2; 5468 } 5469 // FIXME the divisor should be retrieved from somewhere 5470 return viewToContent(width); 5471 } 5472 5473 private int getScaledMaxYScroll() { 5474 int height; 5475 if (mHeightCanMeasure == false) { 5476 height = getViewHeight() / 4; 5477 } else { 5478 Rect visRect = new Rect(); 5479 calcOurVisibleRect(visRect); 5480 height = visRect.height() / 2; 5481 } 5482 // FIXME the divisor should be retrieved from somewhere 5483 // the closest thing today is hard-coded into ScrollView.java 5484 // (from ScrollView.java, line 363) int maxJump = height/2; 5485 return viewToContent(height); 5486 } 5487 5488 /** 5489 * Called by JNI to invalidate view 5490 */ 5491 private void viewInvalidate() { 5492 invalidate(); 5493 } 5494 5495 // return true if the key was handled 5496 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 5497 long time, boolean ignorePlugin) { 5498 if (mNativeClass == 0) { 5499 return false; 5500 } 5501 if (ignorePlugin == false && nativePluginEatsNavKey()) { 5502 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 5503 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 5504 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 5505 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 5506 , 0, 0, 0); 5507 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5508 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5509 return true; 5510 } 5511 mLastCursorTime = time; 5512 mLastCursorBounds = nativeGetCursorRingBounds(); 5513 boolean keyHandled 5514 = nativeMoveCursor(keyCode, count, noScroll) == false; 5515 if (DebugFlags.WEB_VIEW) { 5516 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 5517 + " mLastCursorTime=" + mLastCursorTime 5518 + " handled=" + keyHandled); 5519 } 5520 if (keyHandled == false || mHeightCanMeasure == false) { 5521 return keyHandled; 5522 } 5523 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 5524 if (contentCursorRingBounds.isEmpty()) return keyHandled; 5525 Rect viewCursorRingBounds = contentToView(contentCursorRingBounds); 5526 Rect visRect = new Rect(); 5527 calcOurVisibleRect(visRect); 5528 Rect outset = new Rect(visRect); 5529 int maxXScroll = visRect.width() / 2; 5530 int maxYScroll = visRect.height() / 2; 5531 outset.inset(-maxXScroll, -maxYScroll); 5532 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 5533 return keyHandled; 5534 } 5535 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 5536 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 5537 maxXScroll); 5538 if (maxH > 0) { 5539 pinScrollBy(maxH, 0, true, 0); 5540 } else { 5541 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 5542 -maxXScroll); 5543 if (maxH < 0) { 5544 pinScrollBy(maxH, 0, true, 0); 5545 } 5546 } 5547 if (mLastCursorBounds.isEmpty()) return keyHandled; 5548 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 5549 return keyHandled; 5550 } 5551 if (DebugFlags.WEB_VIEW) { 5552 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 5553 + contentCursorRingBounds); 5554 } 5555 requestRectangleOnScreen(viewCursorRingBounds); 5556 mUserScroll = true; 5557 return keyHandled; 5558 } 5559 5560 /** 5561 * Set the background color. It's white by default. Pass 5562 * zero to make the view transparent. 5563 * @param color the ARGB color described by Color.java 5564 */ 5565 public void setBackgroundColor(int color) { 5566 mBackgroundColor = color; 5567 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 5568 } 5569 5570 public void debugDump() { 5571 nativeDebugDump(); 5572 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 5573 } 5574 5575 /** 5576 * Update our cache with updatedText. 5577 * @param updatedText The new text to put in our cache. 5578 */ 5579 /* package */ void updateCachedTextfield(String updatedText) { 5580 // Also place our generation number so that when we look at the cache 5581 // we recognize that it is up to date. 5582 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 5583 } 5584 5585 /* package */ native void nativeClearCursor(); 5586 private native void nativeCreate(int ptr); 5587 private native int nativeCursorFramePointer(); 5588 private native Rect nativeCursorNodeBounds(); 5589 /* package */ native int nativeCursorNodePointer(); 5590 /* package */ native boolean nativeCursorMatchesFocus(); 5591 private native boolean nativeCursorIntersects(Rect visibleRect); 5592 private native boolean nativeCursorIsAnchor(); 5593 private native boolean nativeCursorIsPlugin(); 5594 private native boolean nativeCursorIsTextInput(); 5595 private native Point nativeCursorPosition(); 5596 private native String nativeCursorText(); 5597 /** 5598 * Returns true if the native cursor node says it wants to handle key events 5599 * (ala plugins). This can only be called if mNativeClass is non-zero! 5600 */ 5601 private native boolean nativeCursorWantsKeyEvents(); 5602 private native void nativeDebugDump(); 5603 private native void nativeDestroy(); 5604 private native void nativeDrawCursorRing(Canvas content); 5605 private native void nativeDrawMatches(Canvas canvas); 5606 private native void nativeDrawSelection(Canvas content 5607 , int x, int y, boolean extendSelection); 5608 private native void nativeDrawSelectionRegion(Canvas content); 5609 private native void nativeDumpDisplayTree(String urlOrNull); 5610 private native int nativeFindAll(String findLower, String findUpper); 5611 private native void nativeFindNext(boolean forward); 5612 private native boolean nativeFocusCandidateIsPassword(); 5613 private native boolean nativeFocusCandidateIsRtlText(); 5614 private native boolean nativeFocusCandidateIsTextField(); 5615 private native boolean nativeFocusCandidateIsTextInput(); 5616 private native int nativeFocusCandidateMaxLength(); 5617 /* package */ native String nativeFocusCandidateName(); 5618 private native Rect nativeFocusCandidateNodeBounds(); 5619 /* package */ native int nativeFocusCandidatePointer(); 5620 private native String nativeFocusCandidateText(); 5621 private native int nativeFocusCandidateTextSize(); 5622 /* package */ native int nativeFocusNodePointer(); 5623 private native Rect nativeGetCursorRingBounds(); 5624 private native Region nativeGetSelection(); 5625 private native boolean nativeHasCursorNode(); 5626 private native boolean nativeHasFocusNode(); 5627 private native void nativeHideCursor(); 5628 private native String nativeImageURI(int x, int y); 5629 private native void nativeInstrumentReport(); 5630 // return true if the page has been scrolled 5631 private native boolean nativeMotionUp(int x, int y, int slop); 5632 // returns false if it handled the key 5633 private native boolean nativeMoveCursor(int keyCode, int count, 5634 boolean noScroll); 5635 private native int nativeMoveGeneration(); 5636 private native void nativeMoveSelection(int x, int y, 5637 boolean extendSelection); 5638 private native boolean nativePluginEatsNavKey(); 5639 // Like many other of our native methods, you must make sure that 5640 // mNativeClass is not null before calling this method. 5641 private native void nativeRecordButtons(boolean focused, 5642 boolean pressed, boolean invalidate); 5643 private native void nativeSelectBestAt(Rect rect); 5644 private native void nativeSetFindIsDown(); 5645 private native void nativeSetFollowedLink(boolean followed); 5646 private native void nativeSetHeightCanMeasure(boolean measure); 5647 private native int nativeTextGeneration(); 5648 // Never call this version except by updateCachedTextfield(String) - 5649 // we always want to pass in our generation number. 5650 private native void nativeUpdateCachedTextfield(String updatedText, 5651 int generation); 5652 private native void nativeUpdatePluginReceivesEvents(); 5653 // return NO_LEFTEDGE means failure. 5654 private static final int NO_LEFTEDGE = -1; 5655 private native int nativeGetBlockLeftEdge(int x, int y); 5656} 5657