WebView.java revision 89325078db6c1369b6c027c4eb3cb6234f11839a
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 // default scale limit. Depending on the display density 512 private static float DEFAULT_MAX_ZOOM_SCALE; 513 private static float DEFAULT_MIN_ZOOM_SCALE; 514 // scale limit, which can be set through viewport meta tag in the web page 515 private float mMaxZoomScale; 516 private float mMinZoomScale; 517 private boolean mMinZoomScaleFixed = true; 518 519 // initial scale in percent. 0 means using default. 520 private int mInitialScale = 0; 521 522 // while in the zoom overview mode, the page's width is fully fit to the 523 // current window. The page is alive, in another words, you can click to 524 // follow the links. Double tap will toggle between zoom overview mode and 525 // the last zoom scale. 526 boolean mInZoomOverview = false; 527 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 528 // engadget always have wider mContentWidth no matter what viewport size is. 529 int mZoomOverviewWidth = WebViewCore.DEFAULT_VIEWPORT_WIDTH; 530 float mLastScale; 531 532 // default scale. Depending on the display density. 533 static int DEFAULT_SCALE_PERCENT; 534 private float mDefaultScale; 535 536 // set to true temporarily while the zoom control is being dragged 537 private boolean mPreviewZoomOnly = false; 538 539 // computed scale and inverse, from mZoomWidth. 540 private float mActualScale; 541 private float mInvActualScale; 542 // if this is non-zero, it is used on drawing rather than mActualScale 543 private float mZoomScale; 544 private float mInvInitialZoomScale; 545 private float mInvFinalZoomScale; 546 private int mInitialScrollX; 547 private int mInitialScrollY; 548 private long mZoomStart; 549 private static final int ZOOM_ANIMATION_LENGTH = 500; 550 551 private boolean mUserScroll = false; 552 553 private int mSnapScrollMode = SNAP_NONE; 554 private static final int SNAP_NONE = 1; 555 private static final int SNAP_X = 2; 556 private static final int SNAP_Y = 3; 557 private static final int SNAP_X_LOCK = 4; 558 private static final int SNAP_Y_LOCK = 5; 559 private boolean mSnapPositive; 560 561 // Used to match key downs and key ups 562 private boolean mGotKeyDown; 563 564 /* package */ static boolean mLogEvent = true; 565 private static final int EVENT_LOG_ZOOM_LEVEL_CHANGE = 70101; 566 private static final int EVENT_LOG_DOUBLE_TAP_DURATION = 70102; 567 568 // for event log 569 private long mLastTouchUpTime = 0; 570 571 /** 572 * URI scheme for telephone number 573 */ 574 public static final String SCHEME_TEL = "tel:"; 575 /** 576 * URI scheme for email address 577 */ 578 public static final String SCHEME_MAILTO = "mailto:"; 579 /** 580 * URI scheme for map address 581 */ 582 public static final String SCHEME_GEO = "geo:0,0?q="; 583 584 private int mBackgroundColor = Color.WHITE; 585 586 // Used to notify listeners of a new picture. 587 private PictureListener mPictureListener; 588 /** 589 * Interface to listen for new pictures as they change. 590 */ 591 public interface PictureListener { 592 /** 593 * Notify the listener that the picture has changed. 594 * @param view The WebView that owns the picture. 595 * @param picture The new picture. 596 */ 597 public void onNewPicture(WebView view, Picture picture); 598 } 599 600 // FIXME: Want to make this public, but need to change the API file. 601 public /*static*/ class HitTestResult { 602 /** 603 * Default HitTestResult, where the target is unknown 604 */ 605 public static final int UNKNOWN_TYPE = 0; 606 /** 607 * HitTestResult for hitting a HTML::a tag 608 */ 609 public static final int ANCHOR_TYPE = 1; 610 /** 611 * HitTestResult for hitting a phone number 612 */ 613 public static final int PHONE_TYPE = 2; 614 /** 615 * HitTestResult for hitting a map address 616 */ 617 public static final int GEO_TYPE = 3; 618 /** 619 * HitTestResult for hitting an email address 620 */ 621 public static final int EMAIL_TYPE = 4; 622 /** 623 * HitTestResult for hitting an HTML::img tag 624 */ 625 public static final int IMAGE_TYPE = 5; 626 /** 627 * HitTestResult for hitting a HTML::a tag which contains HTML::img 628 */ 629 public static final int IMAGE_ANCHOR_TYPE = 6; 630 /** 631 * HitTestResult for hitting a HTML::a tag with src=http 632 */ 633 public static final int SRC_ANCHOR_TYPE = 7; 634 /** 635 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 636 */ 637 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 638 /** 639 * HitTestResult for hitting an edit text area 640 */ 641 public static final int EDIT_TEXT_TYPE = 9; 642 643 private int mType; 644 private String mExtra; 645 646 HitTestResult() { 647 mType = UNKNOWN_TYPE; 648 } 649 650 private void setType(int type) { 651 mType = type; 652 } 653 654 private void setExtra(String extra) { 655 mExtra = extra; 656 } 657 658 public int getType() { 659 return mType; 660 } 661 662 public String getExtra() { 663 return mExtra; 664 } 665 } 666 667 // The View containing the zoom controls 668 private ExtendedZoomControls mZoomControls; 669 private Runnable mZoomControlRunnable; 670 671 private ZoomButtonsController mZoomButtonsController; 672 673 // These keep track of the center point of the zoom. They are used to 674 // determine the point around which we should zoom. 675 private float mZoomCenterX; 676 private float mZoomCenterY; 677 678 private ZoomButtonsController.OnZoomListener mZoomListener = 679 new ZoomButtonsController.OnZoomListener() { 680 681 public void onVisibilityChanged(boolean visible) { 682 if (visible) { 683 switchOutDrawHistory(); 684 updateZoomButtonsEnabled(); 685 } 686 } 687 688 public void onZoom(boolean zoomIn) { 689 if (zoomIn) { 690 zoomIn(); 691 } else { 692 zoomOut(); 693 } 694 695 updateZoomButtonsEnabled(); 696 } 697 }; 698 699 /** 700 * Construct a new WebView with a Context object. 701 * @param context A Context object used to access application assets. 702 */ 703 public WebView(Context context) { 704 this(context, null); 705 } 706 707 /** 708 * Construct a new WebView with layout parameters. 709 * @param context A Context object used to access application assets. 710 * @param attrs An AttributeSet passed to our parent. 711 */ 712 public WebView(Context context, AttributeSet attrs) { 713 this(context, attrs, com.android.internal.R.attr.webViewStyle); 714 } 715 716 /** 717 * Construct a new WebView with layout parameters and a default style. 718 * @param context A Context object used to access application assets. 719 * @param attrs An AttributeSet passed to our parent. 720 * @param defStyle The default style resource ID. 721 */ 722 public WebView(Context context, AttributeSet attrs, int defStyle) { 723 super(context, attrs, defStyle); 724 init(); 725 726 mCallbackProxy = new CallbackProxy(context, this); 727 mWebViewCore = new WebViewCore(context, this, mCallbackProxy); 728 mDatabase = WebViewDatabase.getInstance(context); 729 mScroller = new Scroller(context); 730 731 mViewManager = new ViewManager(this); 732 733 mZoomButtonsController = new ZoomButtonsController(this); 734 mZoomButtonsController.setOnZoomListener(mZoomListener); 735 // ZoomButtonsController positions the buttons at the bottom, but in 736 // the middle. Change their layout parameters so they appear on the 737 // right. 738 View controls = mZoomButtonsController.getZoomControls(); 739 ViewGroup.LayoutParams params = controls.getLayoutParams(); 740 if (params instanceof FrameLayout.LayoutParams) { 741 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 742 params; 743 frameParams.gravity = Gravity.RIGHT; 744 } 745 } 746 747 private void updateZoomButtonsEnabled() { 748 boolean canZoomIn = mActualScale < mMaxZoomScale; 749 boolean canZoomOut = mActualScale > mMinZoomScale; 750 if (!canZoomIn && !canZoomOut) { 751 // Hide the zoom in and out buttons, as well as the fit to page 752 // button, if the page cannot zoom 753 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 754 } else { 755 // Bring back the hidden zoom controls. 756 mZoomButtonsController.getZoomControls() 757 .setVisibility(View.VISIBLE); 758 // Set each one individually, as a page may be able to zoom in 759 // or out. 760 mZoomButtonsController.setZoomInEnabled(canZoomIn); 761 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 762 } 763 } 764 765 private void init() { 766 setWillNotDraw(false); 767 setFocusable(true); 768 setFocusableInTouchMode(true); 769 setClickable(true); 770 setLongClickable(true); 771 772 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 773 int slop = configuration.getScaledTouchSlop(); 774 mTouchSlopSquare = slop * slop; 775 mMinLockSnapReverseDistance = slop; 776 slop = configuration.getScaledDoubleTapSlop(); 777 mDoubleTapSlopSquare = slop * slop; 778 final float density = getContext().getResources().getDisplayMetrics().density; 779 // use one line height, 16 based on our current default font, for how 780 // far we allow a touch be away from the edge of a link 781 mNavSlop = (int) (16 * density); 782 // density adjusted scale factors 783 DEFAULT_SCALE_PERCENT = (int) (100 * density); 784 mDefaultScale = density; 785 mActualScale = density; 786 mInvActualScale = 1 / density; 787 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 788 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 789 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 790 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 791 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 792 } 793 794 /* package */void updateDefaultZoomDensity(int zoomDensity) { 795 final float density = getContext().getResources().getDisplayMetrics().density 796 * 100 / zoomDensity; 797 if (Math.abs(density - mDefaultScale) > 0.01) { 798 float scaleFactor = density / mDefaultScale; 799 // adjust the limits 800 mNavSlop = (int) (16 * density); 801 DEFAULT_SCALE_PERCENT = (int) (100 * density); 802 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 803 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 804 mDefaultScale = density; 805 mMaxZoomScale *= scaleFactor; 806 mMinZoomScale *= scaleFactor; 807 setNewZoomScale(mActualScale * scaleFactor, false); 808 } 809 } 810 811 /* package */ boolean onSavePassword(String schemePlusHost, String username, 812 String password, final Message resumeMsg) { 813 boolean rVal = false; 814 if (resumeMsg == null) { 815 // null resumeMsg implies saving password silently 816 mDatabase.setUsernamePassword(schemePlusHost, username, password); 817 } else { 818 final Message remember = mPrivateHandler.obtainMessage( 819 REMEMBER_PASSWORD); 820 remember.getData().putString("host", schemePlusHost); 821 remember.getData().putString("username", username); 822 remember.getData().putString("password", password); 823 remember.obj = resumeMsg; 824 825 final Message neverRemember = mPrivateHandler.obtainMessage( 826 NEVER_REMEMBER_PASSWORD); 827 neverRemember.getData().putString("host", schemePlusHost); 828 neverRemember.getData().putString("username", username); 829 neverRemember.getData().putString("password", password); 830 neverRemember.obj = resumeMsg; 831 832 new AlertDialog.Builder(getContext()) 833 .setTitle(com.android.internal.R.string.save_password_label) 834 .setMessage(com.android.internal.R.string.save_password_message) 835 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 836 new DialogInterface.OnClickListener() { 837 public void onClick(DialogInterface dialog, int which) { 838 resumeMsg.sendToTarget(); 839 } 840 }) 841 .setNeutralButton(com.android.internal.R.string.save_password_remember, 842 new DialogInterface.OnClickListener() { 843 public void onClick(DialogInterface dialog, int which) { 844 remember.sendToTarget(); 845 } 846 }) 847 .setNegativeButton(com.android.internal.R.string.save_password_never, 848 new DialogInterface.OnClickListener() { 849 public void onClick(DialogInterface dialog, int which) { 850 neverRemember.sendToTarget(); 851 } 852 }) 853 .setOnCancelListener(new OnCancelListener() { 854 public void onCancel(DialogInterface dialog) { 855 resumeMsg.sendToTarget(); 856 } 857 }).show(); 858 // Return true so that WebViewCore will pause while the dialog is 859 // up. 860 rVal = true; 861 } 862 return rVal; 863 } 864 865 @Override 866 public void setScrollBarStyle(int style) { 867 if (style == View.SCROLLBARS_INSIDE_INSET 868 || style == View.SCROLLBARS_OUTSIDE_INSET) { 869 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 870 } else { 871 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 872 } 873 super.setScrollBarStyle(style); 874 } 875 876 /** 877 * Specify whether the horizontal scrollbar has overlay style. 878 * @param overlay TRUE if horizontal scrollbar should have overlay style. 879 */ 880 public void setHorizontalScrollbarOverlay(boolean overlay) { 881 mOverlayHorizontalScrollbar = overlay; 882 } 883 884 /** 885 * Specify whether the vertical scrollbar has overlay style. 886 * @param overlay TRUE if vertical scrollbar should have overlay style. 887 */ 888 public void setVerticalScrollbarOverlay(boolean overlay) { 889 mOverlayVerticalScrollbar = overlay; 890 } 891 892 /** 893 * Return whether horizontal scrollbar has overlay style 894 * @return TRUE if horizontal scrollbar has overlay style. 895 */ 896 public boolean overlayHorizontalScrollbar() { 897 return mOverlayHorizontalScrollbar; 898 } 899 900 /** 901 * Return whether vertical scrollbar has overlay style 902 * @return TRUE if vertical scrollbar has overlay style. 903 */ 904 public boolean overlayVerticalScrollbar() { 905 return mOverlayVerticalScrollbar; 906 } 907 908 /* 909 * Return the width of the view where the content of WebView should render 910 * to. 911 */ 912 private int getViewWidth() { 913 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 914 return getWidth(); 915 } else { 916 return getWidth() - getVerticalScrollbarWidth(); 917 } 918 } 919 920 /* 921 * Return the height of the view where the content of WebView should render 922 * to. 923 */ 924 private int getViewHeight() { 925 if (!isHorizontalScrollBarEnabled() || mOverlayHorizontalScrollbar) { 926 return getHeight(); 927 } else { 928 return getHeight() - getHorizontalScrollbarHeight(); 929 } 930 } 931 932 /** 933 * @return The SSL certificate for the main top-level page or null if 934 * there is no certificate (the site is not secure). 935 */ 936 public SslCertificate getCertificate() { 937 return mCertificate; 938 } 939 940 /** 941 * Sets the SSL certificate for the main top-level page. 942 */ 943 public void setCertificate(SslCertificate certificate) { 944 // here, the certificate can be null (if the site is not secure) 945 mCertificate = certificate; 946 } 947 948 //------------------------------------------------------------------------- 949 // Methods called by activity 950 //------------------------------------------------------------------------- 951 952 /** 953 * Save the username and password for a particular host in the WebView's 954 * internal database. 955 * @param host The host that required the credentials. 956 * @param username The username for the given host. 957 * @param password The password for the given host. 958 */ 959 public void savePassword(String host, String username, String password) { 960 mDatabase.setUsernamePassword(host, username, password); 961 } 962 963 /** 964 * Set the HTTP authentication credentials for a given host and realm. 965 * 966 * @param host The host for the credentials. 967 * @param realm The realm for the credentials. 968 * @param username The username for the password. If it is null, it means 969 * password can't be saved. 970 * @param password The password 971 */ 972 public void setHttpAuthUsernamePassword(String host, String realm, 973 String username, String password) { 974 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 975 } 976 977 /** 978 * Retrieve the HTTP authentication username and password for a given 979 * host & realm pair 980 * 981 * @param host The host for which the credentials apply. 982 * @param realm The realm for which the credentials apply. 983 * @return String[] if found, String[0] is username, which can be null and 984 * String[1] is password. Return null if it can't find anything. 985 */ 986 public String[] getHttpAuthUsernamePassword(String host, String realm) { 987 return mDatabase.getHttpAuthUsernamePassword(host, realm); 988 } 989 990 /** 991 * Destroy the internal state of the WebView. This method should be called 992 * after the WebView has been removed from the view system. No other 993 * methods may be called on a WebView after destroy. 994 */ 995 public void destroy() { 996 clearTextEntry(); 997 if (mWebViewCore != null) { 998 // Set the handlers to null before destroying WebViewCore so no 999 // more messages will be posted. 1000 mCallbackProxy.setWebViewClient(null); 1001 mCallbackProxy.setWebChromeClient(null); 1002 // Tell WebViewCore to destroy itself 1003 WebViewCore webViewCore = mWebViewCore; 1004 mWebViewCore = null; // prevent using partial webViewCore 1005 webViewCore.destroy(); 1006 // Remove any pending messages that might not be serviced yet. 1007 mPrivateHandler.removeCallbacksAndMessages(null); 1008 mCallbackProxy.removeCallbacksAndMessages(null); 1009 // Wake up the WebCore thread just in case it is waiting for a 1010 // javascript dialog. 1011 synchronized (mCallbackProxy) { 1012 mCallbackProxy.notify(); 1013 } 1014 } 1015 if (mNativeClass != 0) { 1016 nativeDestroy(); 1017 mNativeClass = 0; 1018 } 1019 } 1020 1021 /** 1022 * Enables platform notifications of data state and proxy changes. 1023 */ 1024 public static void enablePlatformNotifications() { 1025 Network.enablePlatformNotifications(); 1026 } 1027 1028 /** 1029 * If platform notifications are enabled, this should be called 1030 * from the Activity's onPause() or onStop(). 1031 */ 1032 public static void disablePlatformNotifications() { 1033 Network.disablePlatformNotifications(); 1034 } 1035 1036 /** 1037 * Sets JavaScript engine flags. 1038 * 1039 * @param flags JS engine flags in a String 1040 * 1041 * @hide pending API solidification 1042 */ 1043 public void setJsFlags(String flags) { 1044 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1045 } 1046 1047 /** 1048 * Inform WebView of the network state. This is used to set 1049 * the javascript property window.navigator.isOnline and 1050 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1051 * @param networkUp boolean indicating if network is available 1052 */ 1053 public void setNetworkAvailable(boolean networkUp) { 1054 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1055 networkUp ? 1 : 0, 0); 1056 } 1057 1058 /** 1059 * Save the state of this WebView used in 1060 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1061 * method no longer stores the display data for this WebView. The previous 1062 * behavior could potentially leak files if {@link #restoreState} was never 1063 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1064 * and restoring the display data. 1065 * @param outState The Bundle to store the WebView state. 1066 * @return The same copy of the back/forward list used to save the state. If 1067 * saveState fails, the returned list will be null. 1068 * @see #savePicture 1069 * @see #restorePicture 1070 */ 1071 public WebBackForwardList saveState(Bundle outState) { 1072 if (outState == null) { 1073 return null; 1074 } 1075 // We grab a copy of the back/forward list because a client of WebView 1076 // may have invalidated the history list by calling clearHistory. 1077 WebBackForwardList list = copyBackForwardList(); 1078 final int currentIndex = list.getCurrentIndex(); 1079 final int size = list.getSize(); 1080 // We should fail saving the state if the list is empty or the index is 1081 // not in a valid range. 1082 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1083 return null; 1084 } 1085 outState.putInt("index", currentIndex); 1086 // FIXME: This should just be a byte[][] instead of ArrayList but 1087 // Parcel.java does not have the code to handle multi-dimensional 1088 // arrays. 1089 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1090 for (int i = 0; i < size; i++) { 1091 WebHistoryItem item = list.getItemAtIndex(i); 1092 byte[] data = item.getFlattenedData(); 1093 if (data == null) { 1094 // It would be very odd to not have any data for a given history 1095 // item. And we will fail to rebuild the history list without 1096 // flattened data. 1097 return null; 1098 } 1099 history.add(data); 1100 } 1101 outState.putSerializable("history", history); 1102 if (mCertificate != null) { 1103 outState.putBundle("certificate", 1104 SslCertificate.saveState(mCertificate)); 1105 } 1106 return list; 1107 } 1108 1109 /** 1110 * Save the current display data to the Bundle given. Used in conjunction 1111 * with {@link #saveState}. 1112 * @param b A Bundle to store the display data. 1113 * @param dest The file to store the serialized picture data. Will be 1114 * overwritten with this WebView's picture data. 1115 * @return True if the picture was successfully saved. 1116 */ 1117 public boolean savePicture(Bundle b, File dest) { 1118 if (dest == null || b == null) { 1119 return false; 1120 } 1121 final Picture p = capturePicture(); 1122 try { 1123 final FileOutputStream out = new FileOutputStream(dest); 1124 p.writeToStream(out); 1125 out.close(); 1126 } catch (FileNotFoundException e){ 1127 e.printStackTrace(); 1128 } catch (IOException e) { 1129 e.printStackTrace(); 1130 } catch (RuntimeException e) { 1131 e.printStackTrace(); 1132 } 1133 if (dest.length() > 0) { 1134 b.putInt("scrollX", mScrollX); 1135 b.putInt("scrollY", mScrollY); 1136 b.putFloat("scale", mActualScale); 1137 if (mInZoomOverview) { 1138 b.putFloat("lastScale", mLastScale); 1139 } 1140 return true; 1141 } 1142 return false; 1143 } 1144 1145 /** 1146 * Restore the display data that was save in {@link #savePicture}. Used in 1147 * conjunction with {@link #restoreState}. 1148 * @param b A Bundle containing the saved display data. 1149 * @param src The file where the picture data was stored. 1150 * @return True if the picture was successfully restored. 1151 */ 1152 public boolean restorePicture(Bundle b, File src) { 1153 if (src == null || b == null) { 1154 return false; 1155 } 1156 if (src.exists()) { 1157 Picture p = null; 1158 try { 1159 final FileInputStream in = new FileInputStream(src); 1160 p = Picture.createFromStream(in); 1161 in.close(); 1162 } catch (FileNotFoundException e){ 1163 e.printStackTrace(); 1164 } catch (RuntimeException e) { 1165 e.printStackTrace(); 1166 } catch (IOException e) { 1167 e.printStackTrace(); 1168 } 1169 if (p != null) { 1170 int sx = b.getInt("scrollX", 0); 1171 int sy = b.getInt("scrollY", 0); 1172 float scale = b.getFloat("scale", 1.0f); 1173 mDrawHistory = true; 1174 mHistoryPicture = p; 1175 mScrollX = sx; 1176 mScrollY = sy; 1177 mHistoryWidth = Math.round(p.getWidth() * scale); 1178 mHistoryHeight = Math.round(p.getHeight() * scale); 1179 // as getWidth() / getHeight() of the view are not 1180 // available yet, set up mActualScale, so that when 1181 // onSizeChanged() is called, the rest will be set 1182 // correctly 1183 mActualScale = scale; 1184 float lastScale = b.getFloat("lastScale", -1.0f); 1185 if (lastScale > 0) { 1186 mInZoomOverview = true; 1187 mLastScale = lastScale; 1188 } else { 1189 mInZoomOverview = false; 1190 } 1191 invalidate(); 1192 return true; 1193 } 1194 } 1195 return false; 1196 } 1197 1198 /** 1199 * Restore the state of this WebView from the given map used in 1200 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1201 * be called to restore the state of the WebView before using the object. If 1202 * it is called after the WebView has had a chance to build state (load 1203 * pages, create a back/forward list, etc.) there may be undesirable 1204 * side-effects. Please note that this method no longer restores the 1205 * display data for this WebView. See {@link #savePicture} and {@link 1206 * #restorePicture} for saving and restoring the display data. 1207 * @param inState The incoming Bundle of state. 1208 * @return The restored back/forward list or null if restoreState failed. 1209 * @see #savePicture 1210 * @see #restorePicture 1211 */ 1212 public WebBackForwardList restoreState(Bundle inState) { 1213 WebBackForwardList returnList = null; 1214 if (inState == null) { 1215 return returnList; 1216 } 1217 if (inState.containsKey("index") && inState.containsKey("history")) { 1218 mCertificate = SslCertificate.restoreState( 1219 inState.getBundle("certificate")); 1220 1221 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1222 final int index = inState.getInt("index"); 1223 // We can't use a clone of the list because we need to modify the 1224 // shared copy, so synchronize instead to prevent concurrent 1225 // modifications. 1226 synchronized (list) { 1227 final List<byte[]> history = 1228 (List<byte[]>) inState.getSerializable("history"); 1229 final int size = history.size(); 1230 // Check the index bounds so we don't crash in native code while 1231 // restoring the history index. 1232 if (index < 0 || index >= size) { 1233 return null; 1234 } 1235 for (int i = 0; i < size; i++) { 1236 byte[] data = history.remove(0); 1237 if (data == null) { 1238 // If we somehow have null data, we cannot reconstruct 1239 // the item and thus our history list cannot be rebuilt. 1240 return null; 1241 } 1242 WebHistoryItem item = new WebHistoryItem(data); 1243 list.addHistoryItem(item); 1244 } 1245 // Grab the most recent copy to return to the caller. 1246 returnList = copyBackForwardList(); 1247 // Update the copy to have the correct index. 1248 returnList.setCurrentIndex(index); 1249 } 1250 // Remove all pending messages because we are restoring previous 1251 // state. 1252 mWebViewCore.removeMessages(); 1253 // Send a restore state message. 1254 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1255 } 1256 return returnList; 1257 } 1258 1259 /** 1260 * Load the given url. 1261 * @param url The url of the resource to load. 1262 */ 1263 public void loadUrl(String url) { 1264 if (url == null) { 1265 return; 1266 } 1267 switchOutDrawHistory(); 1268 mWebViewCore.sendMessage(EventHub.LOAD_URL, url); 1269 clearTextEntry(); 1270 } 1271 1272 /** 1273 * Load the url with postData using "POST" method into the WebView. If url 1274 * is not a network url, it will be loaded with {link 1275 * {@link #loadUrl(String)} instead. 1276 * 1277 * @param url The url of the resource to load. 1278 * @param postData The data will be passed to "POST" request. 1279 */ 1280 public void postUrl(String url, byte[] postData) { 1281 if (URLUtil.isNetworkUrl(url)) { 1282 switchOutDrawHistory(); 1283 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1284 arg.mUrl = url; 1285 arg.mPostData = postData; 1286 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1287 clearTextEntry(); 1288 } else { 1289 loadUrl(url); 1290 } 1291 } 1292 1293 /** 1294 * Load the given data into the WebView. This will load the data into 1295 * WebView using the data: scheme. Content loaded through this mechanism 1296 * does not have the ability to load content from the network. 1297 * @param data A String of data in the given encoding. 1298 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1299 * @param encoding The encoding of the data. i.e. utf-8, base64 1300 */ 1301 public void loadData(String data, String mimeType, String encoding) { 1302 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1303 } 1304 1305 /** 1306 * Load the given data into the WebView, use the provided URL as the base 1307 * URL for the content. The base URL is the URL that represents the page 1308 * that is loaded through this interface. As such, it is used for the 1309 * history entry and to resolve any relative URLs. The failUrl is used if 1310 * browser fails to load the data provided. If it is empty or null, and the 1311 * load fails, then no history entry is created. 1312 * <p> 1313 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1314 * files through "file:///android_asset/" for the sub resources is more 1315 * restricted. If you provide null or empty string as baseUrl, you won't be 1316 * able to access asset files. If the baseUrl is anything other than 1317 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1318 * sub resources. 1319 * 1320 * @param baseUrl Url to resolve relative paths with, if null defaults to 1321 * "about:blank" 1322 * @param data A String of data in the given encoding. 1323 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1324 * defaults to "text/html" 1325 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1326 * @param failUrl URL to use if the content fails to load or null. 1327 */ 1328 public void loadDataWithBaseURL(String baseUrl, String data, 1329 String mimeType, String encoding, String failUrl) { 1330 1331 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1332 loadData(data, mimeType, encoding); 1333 return; 1334 } 1335 switchOutDrawHistory(); 1336 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1337 arg.mBaseUrl = baseUrl; 1338 arg.mData = data; 1339 arg.mMimeType = mimeType; 1340 arg.mEncoding = encoding; 1341 arg.mFailUrl = failUrl; 1342 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1343 clearTextEntry(); 1344 } 1345 1346 /** 1347 * Stop the current load. 1348 */ 1349 public void stopLoading() { 1350 // TODO: should we clear all the messages in the queue before sending 1351 // STOP_LOADING? 1352 switchOutDrawHistory(); 1353 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1354 } 1355 1356 /** 1357 * Reload the current url. 1358 */ 1359 public void reload() { 1360 switchOutDrawHistory(); 1361 mWebViewCore.sendMessage(EventHub.RELOAD); 1362 } 1363 1364 /** 1365 * Return true if this WebView has a back history item. 1366 * @return True iff this WebView has a back history item. 1367 */ 1368 public boolean canGoBack() { 1369 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1370 synchronized (l) { 1371 if (l.getClearPending()) { 1372 return false; 1373 } else { 1374 return l.getCurrentIndex() > 0; 1375 } 1376 } 1377 } 1378 1379 /** 1380 * Go back in the history of this WebView. 1381 */ 1382 public void goBack() { 1383 goBackOrForward(-1); 1384 } 1385 1386 /** 1387 * Return true if this WebView has a forward history item. 1388 * @return True iff this Webview has a forward history item. 1389 */ 1390 public boolean canGoForward() { 1391 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1392 synchronized (l) { 1393 if (l.getClearPending()) { 1394 return false; 1395 } else { 1396 return l.getCurrentIndex() < l.getSize() - 1; 1397 } 1398 } 1399 } 1400 1401 /** 1402 * Go forward in the history of this WebView. 1403 */ 1404 public void goForward() { 1405 goBackOrForward(1); 1406 } 1407 1408 /** 1409 * Return true if the page can go back or forward the given 1410 * number of steps. 1411 * @param steps The negative or positive number of steps to move the 1412 * history. 1413 */ 1414 public boolean canGoBackOrForward(int steps) { 1415 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1416 synchronized (l) { 1417 if (l.getClearPending()) { 1418 return false; 1419 } else { 1420 int newIndex = l.getCurrentIndex() + steps; 1421 return newIndex >= 0 && newIndex < l.getSize(); 1422 } 1423 } 1424 } 1425 1426 /** 1427 * Go to the history item that is the number of steps away from 1428 * the current item. Steps is negative if backward and positive 1429 * if forward. 1430 * @param steps The number of steps to take back or forward in the back 1431 * forward list. 1432 */ 1433 public void goBackOrForward(int steps) { 1434 goBackOrForward(steps, false); 1435 } 1436 1437 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1438 // every time we go back or forward, we want to reset the 1439 // WebView certificate: 1440 // if the new site is secure, we will reload it and get a 1441 // new certificate set; 1442 // if the new site is not secure, the certificate must be 1443 // null, and that will be the case 1444 mCertificate = null; 1445 if (steps != 0) { 1446 clearTextEntry(); 1447 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1448 ignoreSnapshot ? 1 : 0); 1449 } 1450 } 1451 1452 private boolean extendScroll(int y) { 1453 int finalY = mScroller.getFinalY(); 1454 int newY = pinLocY(finalY + y); 1455 if (newY == finalY) return false; 1456 mScroller.setFinalY(newY); 1457 mScroller.extendDuration(computeDuration(0, y)); 1458 return true; 1459 } 1460 1461 /** 1462 * Scroll the contents of the view up by half the view size 1463 * @param top true to jump to the top of the page 1464 * @return true if the page was scrolled 1465 */ 1466 public boolean pageUp(boolean top) { 1467 if (mNativeClass == 0) { 1468 return false; 1469 } 1470 nativeClearCursor(); // start next trackball movement from page edge 1471 if (top) { 1472 // go to the top of the document 1473 return pinScrollTo(mScrollX, 0, true, 0); 1474 } 1475 // Page up 1476 int h = getHeight(); 1477 int y; 1478 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1479 y = -h + PAGE_SCROLL_OVERLAP; 1480 } else { 1481 y = -h / 2; 1482 } 1483 mUserScroll = true; 1484 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1485 : extendScroll(y); 1486 } 1487 1488 /** 1489 * Scroll the contents of the view down by half the page size 1490 * @param bottom true to jump to bottom of page 1491 * @return true if the page was scrolled 1492 */ 1493 public boolean pageDown(boolean bottom) { 1494 if (mNativeClass == 0) { 1495 return false; 1496 } 1497 nativeClearCursor(); // start next trackball movement from page edge 1498 if (bottom) { 1499 return pinScrollTo(mScrollX, mContentHeight, true, 0); 1500 } 1501 // Page down. 1502 int h = getHeight(); 1503 int y; 1504 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1505 y = h - PAGE_SCROLL_OVERLAP; 1506 } else { 1507 y = h / 2; 1508 } 1509 mUserScroll = true; 1510 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1511 : extendScroll(y); 1512 } 1513 1514 /** 1515 * Clear the view so that onDraw() will draw nothing but white background, 1516 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1517 */ 1518 public void clearView() { 1519 mContentWidth = 0; 1520 mContentHeight = 0; 1521 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1522 } 1523 1524 /** 1525 * Return a new picture that captures the current display of the webview. 1526 * This is a copy of the display, and will be unaffected if the webview 1527 * later loads a different URL. 1528 * 1529 * @return a picture containing the current contents of the view. Note this 1530 * picture is of the entire document, and is not restricted to the 1531 * bounds of the view. 1532 */ 1533 public Picture capturePicture() { 1534 if (null == mWebViewCore) return null; // check for out of memory tab 1535 return mWebViewCore.copyContentPicture(); 1536 } 1537 1538 /** 1539 * Return true if the browser is displaying a TextView for text input. 1540 */ 1541 private boolean inEditingMode() { 1542 return mWebTextView != null && mWebTextView.getParent() != null 1543 && mWebTextView.hasFocus(); 1544 } 1545 1546 private void clearTextEntry() { 1547 if (inEditingMode()) { 1548 mWebTextView.remove(); 1549 } 1550 } 1551 1552 /** 1553 * Return the current scale of the WebView 1554 * @return The current scale. 1555 */ 1556 public float getScale() { 1557 return mActualScale; 1558 } 1559 1560 /** 1561 * Set the initial scale for the WebView. 0 means default. If 1562 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1563 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1564 * WebView starts will this value as initial scale. 1565 * 1566 * @param scaleInPercent The initial scale in percent. 1567 */ 1568 public void setInitialScale(int scaleInPercent) { 1569 mInitialScale = scaleInPercent; 1570 } 1571 1572 /** 1573 * Invoke the graphical zoom picker widget for this WebView. This will 1574 * result in the zoom widget appearing on the screen to control the zoom 1575 * level of this WebView. 1576 */ 1577 public void invokeZoomPicker() { 1578 if (!getSettings().supportZoom()) { 1579 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1580 return; 1581 } 1582 clearTextEntry(); 1583 if (getSettings().getBuiltInZoomControls()) { 1584 mZoomButtonsController.setVisible(true); 1585 } else { 1586 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1587 mPrivateHandler.postDelayed(mZoomControlRunnable, 1588 ZOOM_CONTROLS_TIMEOUT); 1589 } 1590 } 1591 1592 /** 1593 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1594 * is found and the anchor has a non-javascript url, the HitTestResult type 1595 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1596 * anchor does not have a url or if it is a javascript url, the type will 1597 * be UNKNOWN_TYPE and the url has to be retrieved through 1598 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1599 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1600 * the "extra" field. A type of 1601 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1602 * a child node. If a phone number is found, the HitTestResult type is set 1603 * to PHONE_TYPE and the phone number is set in the "extra" field of 1604 * HitTestResult. If a map address is found, the HitTestResult type is set 1605 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1606 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1607 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1608 * HitTestResult type is set to UNKNOWN_TYPE. 1609 */ 1610 public HitTestResult getHitTestResult() { 1611 if (mNativeClass == 0) { 1612 return null; 1613 } 1614 1615 HitTestResult result = new HitTestResult(); 1616 if (nativeHasCursorNode()) { 1617 if (nativeCursorIsTextInput()) { 1618 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1619 } else { 1620 String text = nativeCursorText(); 1621 if (text != null) { 1622 if (text.startsWith(SCHEME_TEL)) { 1623 result.setType(HitTestResult.PHONE_TYPE); 1624 result.setExtra(text.substring(SCHEME_TEL.length())); 1625 } else if (text.startsWith(SCHEME_MAILTO)) { 1626 result.setType(HitTestResult.EMAIL_TYPE); 1627 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1628 } else if (text.startsWith(SCHEME_GEO)) { 1629 result.setType(HitTestResult.GEO_TYPE); 1630 result.setExtra(URLDecoder.decode(text 1631 .substring(SCHEME_GEO.length()))); 1632 } else if (nativeCursorIsAnchor()) { 1633 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1634 result.setExtra(text); 1635 } 1636 } 1637 } 1638 } 1639 int type = result.getType(); 1640 if (type == HitTestResult.UNKNOWN_TYPE 1641 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1642 // Now check to see if it is an image. 1643 int contentX = viewToContent((int) mLastTouchX + mScrollX); 1644 int contentY = viewToContent((int) mLastTouchY + mScrollY); 1645 String text = nativeImageURI(contentX, contentY); 1646 if (text != null) { 1647 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1648 HitTestResult.IMAGE_TYPE : 1649 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1650 result.setExtra(text); 1651 } 1652 } 1653 return result; 1654 } 1655 1656 /** 1657 * Request the href of an anchor element due to getFocusNodePath returning 1658 * "href." If hrefMsg is null, this method returns immediately and does not 1659 * dispatch hrefMsg to its target. 1660 * 1661 * @param hrefMsg This message will be dispatched with the result of the 1662 * request as the data member with "url" as key. The result can 1663 * be null. 1664 */ 1665 // FIXME: API change required to change the name of this function. We now 1666 // look at the cursor node, and not the focus node. Also, what is 1667 // getFocusNodePath? 1668 public void requestFocusNodeHref(Message hrefMsg) { 1669 if (hrefMsg == null || mNativeClass == 0) { 1670 return; 1671 } 1672 if (nativeCursorIsAnchor()) { 1673 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1674 nativeCursorFramePointer(), nativeCursorNodePointer(), 1675 hrefMsg); 1676 } 1677 } 1678 1679 /** 1680 * Request the url of the image last touched by the user. msg will be sent 1681 * to its target with a String representing the url as its object. 1682 * 1683 * @param msg This message will be dispatched with the result of the request 1684 * as the data member with "url" as key. The result can be null. 1685 */ 1686 public void requestImageRef(Message msg) { 1687 int contentX = viewToContent((int) mLastTouchX + mScrollX); 1688 int contentY = viewToContent((int) mLastTouchY + mScrollY); 1689 String ref = nativeImageURI(contentX, contentY); 1690 Bundle data = msg.getData(); 1691 data.putString("url", ref); 1692 msg.setData(data); 1693 msg.sendToTarget(); 1694 } 1695 1696 private static int pinLoc(int x, int viewMax, int docMax) { 1697// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1698 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1699 // pin the short document to the top/left of the screen 1700 x = 0; 1701// Log.d(LOGTAG, "--- center " + x); 1702 } else if (x < 0) { 1703 x = 0; 1704// Log.d(LOGTAG, "--- zero"); 1705 } else if (x + viewMax > docMax) { 1706 x = docMax - viewMax; 1707// Log.d(LOGTAG, "--- pin " + x); 1708 } 1709 return x; 1710 } 1711 1712 // Expects x in view coordinates 1713 private int pinLocX(int x) { 1714 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1715 } 1716 1717 // Expects y in view coordinates 1718 private int pinLocY(int y) { 1719 return pinLoc(y, getViewHeight(), computeVerticalScrollRange()); 1720 } 1721 1722 /*package*/ int viewToContent(int x) { 1723 return Math.round(x * mInvActualScale); 1724 } 1725 1726 /*package*/ int contentToView(int x) { 1727 return Math.round(x * mActualScale); 1728 } 1729 1730 // Called by JNI to invalidate the View, given rectangle coordinates in 1731 // content space 1732 private void viewInvalidate(int l, int t, int r, int b) { 1733 invalidate(contentToView(l), contentToView(t), contentToView(r), 1734 contentToView(b)); 1735 } 1736 1737 // Called by JNI to invalidate the View after a delay, given rectangle 1738 // coordinates in content space 1739 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1740 postInvalidateDelayed(delay, contentToView(l), contentToView(t), 1741 contentToView(r), contentToView(b)); 1742 } 1743 1744 private Rect contentToView(Rect x) { 1745 return new Rect(contentToView(x.left), contentToView(x.top) 1746 , contentToView(x.right), contentToView(x.bottom)); 1747 } 1748 1749 /* call from webcoreview.draw(), so we're still executing in the UI thread 1750 */ 1751 private void recordNewContentSize(int w, int h, boolean updateLayout) { 1752 1753 // premature data from webkit, ignore 1754 if ((w | h) == 0) { 1755 return; 1756 } 1757 1758 // don't abort a scroll animation if we didn't change anything 1759 if (mContentWidth != w || mContentHeight != h) { 1760 // record new dimensions 1761 mContentWidth = w; 1762 mContentHeight = h; 1763 // If history Picture is drawn, don't update scroll. They will be 1764 // updated when we get out of that mode. 1765 if (!mDrawHistory) { 1766 // repin our scroll, taking into account the new content size 1767 int oldX = mScrollX; 1768 int oldY = mScrollY; 1769 mScrollX = pinLocX(mScrollX); 1770 mScrollY = pinLocY(mScrollY); 1771 // android.util.Log.d("skia", "recordNewContentSize - 1772 // abortAnimation"); 1773 mScroller.abortAnimation(); // just in case 1774 if (oldX != mScrollX || oldY != mScrollY) { 1775 sendOurVisibleRect(); 1776 } 1777 } 1778 } 1779 contentSizeChanged(updateLayout); 1780 } 1781 1782 private void setNewZoomScale(float scale, boolean force) { 1783 if (scale < mMinZoomScale) { 1784 scale = mMinZoomScale; 1785 } else if (scale > mMaxZoomScale) { 1786 scale = mMaxZoomScale; 1787 } 1788 if (scale != mActualScale || force) { 1789 if (mDrawHistory) { 1790 // If history Picture is drawn, don't update scroll. They will 1791 // be updated when we get out of that mode. 1792 if (scale != mActualScale && !mPreviewZoomOnly) { 1793 mCallbackProxy.onScaleChanged(mActualScale, scale); 1794 } 1795 mActualScale = scale; 1796 mInvActualScale = 1 / scale; 1797 if (!mPreviewZoomOnly) { 1798 sendViewSizeZoom(); 1799 } 1800 } else { 1801 // update our scroll so we don't appear to jump 1802 // i.e. keep the center of the doc in the center of the view 1803 1804 int oldX = mScrollX; 1805 int oldY = mScrollY; 1806 float ratio = scale * mInvActualScale; // old inverse 1807 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 1808 float sy = ratio * oldY + (ratio - 1) * mZoomCenterY; 1809 1810 // now update our new scale and inverse 1811 if (scale != mActualScale && !mPreviewZoomOnly) { 1812 mCallbackProxy.onScaleChanged(mActualScale, scale); 1813 } 1814 mActualScale = scale; 1815 mInvActualScale = 1 / scale; 1816 1817 // Scale all the child views 1818 mViewManager.scaleAll(); 1819 1820 // as we don't have animation for scaling, don't do animation 1821 // for scrolling, as it causes weird intermediate state 1822 // pinScrollTo(Math.round(sx), Math.round(sy)); 1823 mScrollX = pinLocX(Math.round(sx)); 1824 mScrollY = pinLocY(Math.round(sy)); 1825 1826 if (!mPreviewZoomOnly) { 1827 sendViewSizeZoom(); 1828 sendOurVisibleRect(); 1829 } 1830 } 1831 } 1832 } 1833 1834 // Used to avoid sending many visible rect messages. 1835 private Rect mLastVisibleRectSent; 1836 private Rect mLastGlobalRect; 1837 1838 private Rect sendOurVisibleRect() { 1839 Rect rect = new Rect(); 1840 calcOurContentVisibleRect(rect); 1841 // Rect.equals() checks for null input. 1842 if (!rect.equals(mLastVisibleRectSent)) { 1843 Point pos = new Point(rect.left, rect.top); 1844 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 1845 nativeMoveGeneration(), 0, pos); 1846 mLastVisibleRectSent = rect; 1847 } 1848 Rect globalRect = new Rect(); 1849 if (getGlobalVisibleRect(globalRect) 1850 && !globalRect.equals(mLastGlobalRect)) { 1851 if (DebugFlags.WEB_VIEW) { 1852 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 1853 + globalRect.top + ",r=" + globalRect.right + ",b=" 1854 + globalRect.bottom); 1855 } 1856 // TODO: the global offset is only used by windowRect() 1857 // in ChromeClientAndroid ; other clients such as touch 1858 // and mouse events could return view + screen relative points. 1859 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 1860 mLastGlobalRect = globalRect; 1861 } 1862 return rect; 1863 } 1864 1865 // Sets r to be the visible rectangle of our webview in view coordinates 1866 private void calcOurVisibleRect(Rect r) { 1867 Point p = new Point(); 1868 getGlobalVisibleRect(r, p); 1869 r.offset(-p.x, -p.y); 1870 if (mFindIsUp) { 1871 r.bottom -= FIND_HEIGHT; 1872 } 1873 } 1874 1875 // Sets r to be our visible rectangle in content coordinates 1876 private void calcOurContentVisibleRect(Rect r) { 1877 calcOurVisibleRect(r); 1878 r.left = viewToContent(r.left); 1879 r.top = viewToContent(r.top); 1880 r.right = viewToContent(r.right); 1881 r.bottom = viewToContent(r.bottom); 1882 } 1883 1884 static class ViewSizeData { 1885 int mWidth; 1886 int mHeight; 1887 int mTextWrapWidth; 1888 float mScale; 1889 } 1890 1891 /** 1892 * Compute unzoomed width and height, and if they differ from the last 1893 * values we sent, send them to webkit (to be used has new viewport) 1894 * 1895 * @return true if new values were sent 1896 */ 1897 private boolean sendViewSizeZoom() { 1898 int viewWidth = getViewWidth(); 1899 int newWidth = Math.round(viewWidth * mInvActualScale); 1900 int newHeight = Math.round(getViewHeight() * mInvActualScale); 1901 /* 1902 * Because the native side may have already done a layout before the 1903 * View system was able to measure us, we have to send a height of 0 to 1904 * remove excess whitespace when we grow our width. This will trigger a 1905 * layout and a change in content size. This content size change will 1906 * mean that contentSizeChanged will either call this method directly or 1907 * indirectly from onSizeChanged. 1908 */ 1909 if (newWidth > mLastWidthSent && mWrapContent) { 1910 newHeight = 0; 1911 } 1912 // Avoid sending another message if the dimensions have not changed. 1913 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 1914 ViewSizeData data = new ViewSizeData(); 1915 data.mWidth = newWidth; 1916 data.mHeight = newHeight; 1917 // while in zoom overview mode, the text are wrapped to the screen 1918 // width matching mLastScale. So that we don't trigger re-flow while 1919 // toggling between overview mode and normal mode. 1920 data.mTextWrapWidth = mInZoomOverview ? Math.round(viewWidth 1921 / mLastScale) : newWidth; 1922 data.mScale = mActualScale; 1923 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 1924 mLastWidthSent = newWidth; 1925 mLastHeightSent = newHeight; 1926 return true; 1927 } 1928 return false; 1929 } 1930 1931 @Override 1932 protected int computeHorizontalScrollRange() { 1933 if (mDrawHistory) { 1934 return mHistoryWidth; 1935 } else { 1936 return contentToView(mContentWidth); 1937 } 1938 } 1939 1940 // Make sure this stays in sync with the actual height of the FindDialog. 1941 private static final int FIND_HEIGHT = 79; 1942 1943 @Override 1944 protected int computeVerticalScrollRange() { 1945 if (mDrawHistory) { 1946 return mHistoryHeight; 1947 } else { 1948 int height = contentToView(mContentHeight); 1949 if (mFindIsUp) { 1950 height += FIND_HEIGHT; 1951 } 1952 return height; 1953 } 1954 } 1955 1956 /** 1957 * Get the url for the current page. This is not always the same as the url 1958 * passed to WebViewClient.onPageStarted because although the load for 1959 * that url has begun, the current page may not have changed. 1960 * @return The url for the current page. 1961 */ 1962 public String getUrl() { 1963 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1964 return h != null ? h.getUrl() : null; 1965 } 1966 1967 /** 1968 * Get the original url for the current page. This is not always the same 1969 * as the url passed to WebViewClient.onPageStarted because although the 1970 * load for that url has begun, the current page may not have changed. 1971 * Also, there may have been redirects resulting in a different url to that 1972 * originally requested. 1973 * @return The url that was originally requested for the current page. 1974 */ 1975 public String getOriginalUrl() { 1976 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1977 return h != null ? h.getOriginalUrl() : null; 1978 } 1979 1980 /** 1981 * Get the title for the current page. This is the title of the current page 1982 * until WebViewClient.onReceivedTitle is called. 1983 * @return The title for the current page. 1984 */ 1985 public String getTitle() { 1986 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1987 return h != null ? h.getTitle() : null; 1988 } 1989 1990 /** 1991 * Get the favicon for the current page. This is the favicon of the current 1992 * page until WebViewClient.onReceivedIcon is called. 1993 * @return The favicon for the current page. 1994 */ 1995 public Bitmap getFavicon() { 1996 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1997 return h != null ? h.getFavicon() : null; 1998 } 1999 2000 /** 2001 * Get the touch icon url for the apple-touch-icon <link> element. 2002 * @hide 2003 */ 2004 public String getTouchIconUrl() { 2005 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2006 return h != null ? h.getTouchIconUrl() : null; 2007 } 2008 2009 /** 2010 * Get the progress for the current page. 2011 * @return The progress for the current page between 0 and 100. 2012 */ 2013 public int getProgress() { 2014 return mCallbackProxy.getProgress(); 2015 } 2016 2017 /** 2018 * @return the height of the HTML content. 2019 */ 2020 public int getContentHeight() { 2021 return mContentHeight; 2022 } 2023 2024 /** 2025 * Pause all layout, parsing, and javascript timers for all webviews. This 2026 * is a global requests, not restricted to just this webview. This can be 2027 * useful if the application has been paused. 2028 */ 2029 public void pauseTimers() { 2030 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2031 } 2032 2033 /** 2034 * Resume all layout, parsing, and javascript timers for all webviews. 2035 * This will resume dispatching all timers. 2036 */ 2037 public void resumeTimers() { 2038 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2039 } 2040 2041 /** 2042 * Call this to pause any extra processing associated with this view and 2043 * its associated DOM/plugins/javascript/etc. For example, if the view is 2044 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2045 * network traffic. When the view is again "active", call onResume(). 2046 * 2047 * Note that this differs from pauseTimers(), which affects all views/DOMs 2048 * @hide 2049 */ 2050 public void onPause() { 2051 if (!mIsPaused) { 2052 mIsPaused = true; 2053 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2054 } 2055 } 2056 2057 /** 2058 * Call this to balanace a previous call to onPause() 2059 * @hide 2060 */ 2061 public void onResume() { 2062 if (mIsPaused) { 2063 mIsPaused = false; 2064 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2065 } 2066 } 2067 2068 /** 2069 * Returns true if the view is paused, meaning onPause() was called. Calling 2070 * onResume() sets the paused state back to false. 2071 * @hide 2072 */ 2073 public boolean isPaused() { 2074 return mIsPaused; 2075 } 2076 2077 /** 2078 * Call this to inform the view that memory is low so that it can 2079 * free any available memory. 2080 * @hide 2081 */ 2082 public void freeMemory() { 2083 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2084 } 2085 2086 /** 2087 * Clear the resource cache. Note that the cache is per-application, so 2088 * this will clear the cache for all WebViews used. 2089 * 2090 * @param includeDiskFiles If false, only the RAM cache is cleared. 2091 */ 2092 public void clearCache(boolean includeDiskFiles) { 2093 // Note: this really needs to be a static method as it clears cache for all 2094 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2095 // we can't make this static. 2096 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2097 includeDiskFiles ? 1 : 0, 0); 2098 } 2099 2100 /** 2101 * Make sure that clearing the form data removes the adapter from the 2102 * currently focused textfield if there is one. 2103 */ 2104 public void clearFormData() { 2105 if (inEditingMode()) { 2106 AutoCompleteAdapter adapter = null; 2107 mWebTextView.setAdapterCustom(adapter); 2108 } 2109 } 2110 2111 /** 2112 * Tell the WebView to clear its internal back/forward list. 2113 */ 2114 public void clearHistory() { 2115 mCallbackProxy.getBackForwardList().setClearPending(); 2116 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2117 } 2118 2119 /** 2120 * Clear the SSL preferences table stored in response to proceeding with SSL 2121 * certificate errors. 2122 */ 2123 public void clearSslPreferences() { 2124 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2125 } 2126 2127 /** 2128 * Return the WebBackForwardList for this WebView. This contains the 2129 * back/forward list for use in querying each item in the history stack. 2130 * This is a copy of the private WebBackForwardList so it contains only a 2131 * snapshot of the current state. Multiple calls to this method may return 2132 * different objects. The object returned from this method will not be 2133 * updated to reflect any new state. 2134 */ 2135 public WebBackForwardList copyBackForwardList() { 2136 return mCallbackProxy.getBackForwardList().clone(); 2137 } 2138 2139 /* 2140 * Highlight and scroll to the next occurance of String in findAll. 2141 * Wraps the page infinitely, and scrolls. Must be called after 2142 * calling findAll. 2143 * 2144 * @param forward Direction to search. 2145 */ 2146 public void findNext(boolean forward) { 2147 nativeFindNext(forward); 2148 } 2149 2150 /* 2151 * Find all instances of find on the page and highlight them. 2152 * @param find String to find. 2153 * @return int The number of occurances of the String "find" 2154 * that were found. 2155 */ 2156 public int findAll(String find) { 2157 mFindIsUp = true; 2158 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2159 invalidate(); 2160 return result; 2161 } 2162 2163 // Used to know whether the find dialog is open. Affects whether 2164 // or not we draw the highlights for matches. 2165 private boolean mFindIsUp; 2166 2167 /** 2168 * Return the first substring consisting of the address of a physical 2169 * location. Currently, only addresses in the United States are detected, 2170 * and consist of: 2171 * - a house number 2172 * - a street name 2173 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2174 * - a city name 2175 * - a state or territory, either spelled out or two-letter abbr. 2176 * - an optional 5 digit or 9 digit zip code. 2177 * 2178 * All names must be correctly capitalized, and the zip code, if present, 2179 * must be valid for the state. The street type must be a standard USPS 2180 * spelling or abbreviation. The state or territory must also be spelled 2181 * or abbreviated using USPS standards. The house number may not exceed 2182 * five digits. 2183 * @param addr The string to search for addresses. 2184 * 2185 * @return the address, or if no address is found, return null. 2186 */ 2187 public static String findAddress(String addr) { 2188 return findAddress(addr, false); 2189 } 2190 2191 /** 2192 * @hide 2193 * Return the first substring consisting of the address of a physical 2194 * location. Currently, only addresses in the United States are detected, 2195 * and consist of: 2196 * - a house number 2197 * - a street name 2198 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2199 * - a city name 2200 * - a state or territory, either spelled out or two-letter abbr. 2201 * - an optional 5 digit or 9 digit zip code. 2202 * 2203 * Names are optionally capitalized, and the zip code, if present, 2204 * must be valid for the state. The street type must be a standard USPS 2205 * spelling or abbreviation. The state or territory must also be spelled 2206 * or abbreviated using USPS standards. The house number may not exceed 2207 * five digits. 2208 * @param addr The string to search for addresses. 2209 * @param caseInsensitive addr Set to true to make search ignore case. 2210 * 2211 * @return the address, or if no address is found, return null. 2212 */ 2213 public static String findAddress(String addr, boolean caseInsensitive) { 2214 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2215 } 2216 2217 /* 2218 * Clear the highlighting surrounding text matches created by findAll. 2219 */ 2220 public void clearMatches() { 2221 mFindIsUp = false; 2222 nativeSetFindIsDown(); 2223 // Now that the dialog has been removed, ensure that we scroll to a 2224 // location that is not beyond the end of the page. 2225 pinScrollTo(mScrollX, mScrollY, false, 0); 2226 invalidate(); 2227 } 2228 2229 /** 2230 * Query the document to see if it contains any image references. The 2231 * message object will be dispatched with arg1 being set to 1 if images 2232 * were found and 0 if the document does not reference any images. 2233 * @param response The message that will be dispatched with the result. 2234 */ 2235 public void documentHasImages(Message response) { 2236 if (response == null) { 2237 return; 2238 } 2239 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2240 } 2241 2242 @Override 2243 public void computeScroll() { 2244 if (mScroller.computeScrollOffset()) { 2245 int oldX = mScrollX; 2246 int oldY = mScrollY; 2247 mScrollX = mScroller.getCurrX(); 2248 mScrollY = mScroller.getCurrY(); 2249 postInvalidate(); // So we draw again 2250 if (oldX != mScrollX || oldY != mScrollY) { 2251 // as onScrollChanged() is not called, sendOurVisibleRect() 2252 // needs to be call explicitly 2253 sendOurVisibleRect(); 2254 } 2255 } else { 2256 super.computeScroll(); 2257 } 2258 } 2259 2260 private static int computeDuration(int dx, int dy) { 2261 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2262 int duration = distance * 1000 / STD_SPEED; 2263 return Math.min(duration, MAX_DURATION); 2264 } 2265 2266 // helper to pin the scrollBy parameters (already in view coordinates) 2267 // returns true if the scroll was changed 2268 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2269 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2270 } 2271 2272 // helper to pin the scrollTo parameters (already in view coordinates) 2273 // returns true if the scroll was changed 2274 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2275 x = pinLocX(x); 2276 y = pinLocY(y); 2277 int dx = x - mScrollX; 2278 int dy = y - mScrollY; 2279 2280 if ((dx | dy) == 0) { 2281 return false; 2282 } 2283 2284 if (true && animate) { 2285 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2286 2287 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2288 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2289 invalidate(); 2290 } else { 2291 mScroller.abortAnimation(); // just in case 2292 scrollTo(x, y); 2293 } 2294 return true; 2295 } 2296 2297 // Scale from content to view coordinates, and pin. 2298 // Also called by jni webview.cpp 2299 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2300 if (mDrawHistory) { 2301 // disallow WebView to change the scroll position as History Picture 2302 // is used in the view system. 2303 // TODO: as we switchOutDrawHistory when trackball or navigation 2304 // keys are hit, this should be safe. Right? 2305 return false; 2306 } 2307 cx = contentToView(cx); 2308 cy = contentToView(cy); 2309 if (mHeightCanMeasure) { 2310 // move our visible rect according to scroll request 2311 if (cy != 0) { 2312 Rect tempRect = new Rect(); 2313 calcOurVisibleRect(tempRect); 2314 tempRect.offset(cx, cy); 2315 requestRectangleOnScreen(tempRect); 2316 } 2317 // FIXME: We scroll horizontally no matter what because currently 2318 // ScrollView and ListView will not scroll horizontally. 2319 // FIXME: Why do we only scroll horizontally if there is no 2320 // vertical scroll? 2321// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2322 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2323 } else { 2324 return pinScrollBy(cx, cy, animate, 0); 2325 } 2326 } 2327 2328 // scale from content to view coordinates, and pin 2329 // return true if pin caused the final x/y different than the request cx/cy; 2330 // return false if the view scroll to the exact position as it is requested. 2331 private boolean setContentScrollTo(int cx, int cy) { 2332 if (mDrawHistory) { 2333 // disallow WebView to change the scroll position as History Picture 2334 // is used in the view system. 2335 // One known case where this is called is that WebCore tries to 2336 // restore the scroll position. As history Picture already uses the 2337 // saved scroll position, it is ok to skip this. 2338 return false; 2339 } 2340 int vx = contentToView(cx); 2341 int vy = contentToView(cy); 2342// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2343// vx + " " + vy + "]"); 2344 pinScrollTo(vx, vy, false, 0); 2345 if (mScrollX != vx || mScrollY != vy) { 2346 return true; 2347 } else { 2348 return false; 2349 } 2350 } 2351 2352 // scale from content to view coordinates, and pin 2353 private void spawnContentScrollTo(int cx, int cy) { 2354 if (mDrawHistory) { 2355 // disallow WebView to change the scroll position as History Picture 2356 // is used in the view system. 2357 return; 2358 } 2359 int vx = contentToView(cx); 2360 int vy = contentToView(cy); 2361 pinScrollTo(vx, vy, true, 0); 2362 } 2363 2364 /** 2365 * These are from webkit, and are in content coordinate system (unzoomed) 2366 */ 2367 private void contentSizeChanged(boolean updateLayout) { 2368 // suppress 0,0 since we usually see real dimensions soon after 2369 // this avoids drawing the prev content in a funny place. If we find a 2370 // way to consolidate these notifications, this check may become 2371 // obsolete 2372 if ((mContentWidth | mContentHeight) == 0) { 2373 return; 2374 } 2375 2376 if (mHeightCanMeasure) { 2377 if (getMeasuredHeight() != contentToView(mContentHeight) 2378 && updateLayout) { 2379 requestLayout(); 2380 } 2381 } else if (mWidthCanMeasure) { 2382 if (getMeasuredWidth() != contentToView(mContentWidth) 2383 && updateLayout) { 2384 requestLayout(); 2385 } 2386 } else { 2387 // If we don't request a layout, try to send our view size to the 2388 // native side to ensure that WebCore has the correct dimensions. 2389 sendViewSizeZoom(); 2390 } 2391 } 2392 2393 /** 2394 * Set the WebViewClient that will receive various notifications and 2395 * requests. This will replace the current handler. 2396 * @param client An implementation of WebViewClient. 2397 */ 2398 public void setWebViewClient(WebViewClient client) { 2399 mCallbackProxy.setWebViewClient(client); 2400 } 2401 2402 /** 2403 * Register the interface to be used when content can not be handled by 2404 * the rendering engine, and should be downloaded instead. This will replace 2405 * the current handler. 2406 * @param listener An implementation of DownloadListener. 2407 */ 2408 public void setDownloadListener(DownloadListener listener) { 2409 mCallbackProxy.setDownloadListener(listener); 2410 } 2411 2412 /** 2413 * Set the chrome handler. This is an implementation of WebChromeClient for 2414 * use in handling Javascript dialogs, favicons, titles, and the progress. 2415 * This will replace the current handler. 2416 * @param client An implementation of WebChromeClient. 2417 */ 2418 public void setWebChromeClient(WebChromeClient client) { 2419 mCallbackProxy.setWebChromeClient(client); 2420 } 2421 2422 /** 2423 * Gets the chrome handler. 2424 * @return the current WebChromeClient instance. 2425 * 2426 * @hide API council approval. 2427 */ 2428 public WebChromeClient getWebChromeClient() { 2429 return mCallbackProxy.getWebChromeClient(); 2430 } 2431 2432 /** 2433 * Set the Picture listener. This is an interface used to receive 2434 * notifications of a new Picture. 2435 * @param listener An implementation of WebView.PictureListener. 2436 */ 2437 public void setPictureListener(PictureListener listener) { 2438 mPictureListener = listener; 2439 } 2440 2441 /** 2442 * {@hide} 2443 */ 2444 /* FIXME: Debug only! Remove for SDK! */ 2445 public void externalRepresentation(Message callback) { 2446 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2447 } 2448 2449 /** 2450 * {@hide} 2451 */ 2452 /* FIXME: Debug only! Remove for SDK! */ 2453 public void documentAsText(Message callback) { 2454 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2455 } 2456 2457 /** 2458 * Use this function to bind an object to Javascript so that the 2459 * methods can be accessed from Javascript. 2460 * <p><strong>IMPORTANT:</strong> 2461 * <ul> 2462 * <li> Using addJavascriptInterface() allows JavaScript to control your 2463 * application. This can be a very useful feature or a dangerous security 2464 * issue. When the HTML in the WebView is untrustworthy (for example, part 2465 * or all of the HTML is provided by some person or process), then an 2466 * attacker could inject HTML that will execute your code and possibly any 2467 * code of the attacker's choosing.<br> 2468 * Do not use addJavascriptInterface() unless all of the HTML in this 2469 * WebView was written by you.</li> 2470 * <li> The Java object that is bound runs in another thread and not in 2471 * the thread that it was constructed in.</li> 2472 * </ul></p> 2473 * @param obj The class instance to bind to Javascript 2474 * @param interfaceName The name to used to expose the class in Javascript 2475 */ 2476 public void addJavascriptInterface(Object obj, String interfaceName) { 2477 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2478 arg.mObject = obj; 2479 arg.mInterfaceName = interfaceName; 2480 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2481 } 2482 2483 /** 2484 * Return the WebSettings object used to control the settings for this 2485 * WebView. 2486 * @return A WebSettings object that can be used to control this WebView's 2487 * settings. 2488 */ 2489 public WebSettings getSettings() { 2490 return mWebViewCore.getSettings(); 2491 } 2492 2493 /** 2494 * Return the list of currently loaded plugins. 2495 * @return The list of currently loaded plugins. 2496 */ 2497 public static synchronized PluginList getPluginList() { 2498 if (sPluginList == null) { 2499 sPluginList = new PluginList(); 2500 } 2501 return sPluginList; 2502 } 2503 2504 /** 2505 * TODO: need to add @Deprecated 2506 */ 2507 public void refreshPlugins(boolean reloadOpenPages) { 2508 PluginManager.getInstance(mContext).refreshPlugins(reloadOpenPages); 2509 } 2510 2511 //------------------------------------------------------------------------- 2512 // Override View methods 2513 //------------------------------------------------------------------------- 2514 2515 @Override 2516 protected void finalize() throws Throwable { 2517 destroy(); 2518 } 2519 2520 @Override 2521 protected void onDraw(Canvas canvas) { 2522 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2523 if (mNativeClass == 0) { 2524 return; 2525 } 2526 if (mWebViewCore.mEndScaleZoom) { 2527 mWebViewCore.mEndScaleZoom = false; 2528 if (mTouchMode >= FIRST_SCROLL_ZOOM 2529 && mTouchMode <= LAST_SCROLL_ZOOM) { 2530 setHorizontalScrollBarEnabled(true); 2531 setVerticalScrollBarEnabled(true); 2532 mTouchMode = TOUCH_DONE_MODE; 2533 } 2534 } 2535 int sc = canvas.save(); 2536 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 2537 scrollZoomDraw(canvas); 2538 } else { 2539 // Update the buttons in the picture, so when we draw the picture 2540 // to the screen, they are in the correct state. 2541 // Tell the native side if user is a) touching the screen, 2542 // b) pressing the trackball down, or c) pressing the enter key 2543 // If the cursor is on a button, we need to draw it in the pressed 2544 // state. 2545 // If mNativeClass is 0, we should not reach here, so we do not 2546 // need to check it again. 2547 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2548 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2549 || mTrackballDown || mGotCenterDown, false); 2550 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2551 } 2552 canvas.restoreToCount(sc); 2553 2554 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2555 invalidate(); 2556 } 2557 } 2558 2559 @Override 2560 public void setLayoutParams(ViewGroup.LayoutParams params) { 2561 if (params.height == LayoutParams.WRAP_CONTENT) { 2562 mWrapContent = true; 2563 } 2564 super.setLayoutParams(params); 2565 } 2566 2567 @Override 2568 public boolean performLongClick() { 2569 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 2570 // Send the click so that the textfield is in focus 2571 // FIXME: When we start respecting changes to the native textfield's 2572 // selection, need to make sure that this does not change it. 2573 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 2574 nativeCursorNodePointer()); 2575 rebuildWebTextView(); 2576 } 2577 if (inEditingMode()) { 2578 return mWebTextView.performLongClick(); 2579 } else { 2580 return super.performLongClick(); 2581 } 2582 } 2583 2584 private void drawCoreAndCursorRing(Canvas canvas, int color, 2585 boolean drawCursorRing) { 2586 if (mDrawHistory) { 2587 canvas.scale(mActualScale, mActualScale); 2588 canvas.drawPicture(mHistoryPicture); 2589 return; 2590 } 2591 2592 boolean animateZoom = mZoomScale != 0; 2593 boolean animateScroll = !mScroller.isFinished() 2594 || mVelocityTracker != null; 2595 if (animateZoom) { 2596 float zoomScale; 2597 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 2598 if (interval < ZOOM_ANIMATION_LENGTH) { 2599 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 2600 zoomScale = 1.0f / (mInvInitialZoomScale 2601 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 2602 invalidate(); 2603 } else { 2604 zoomScale = mZoomScale; 2605 // set mZoomScale to be 0 as we have done animation 2606 mZoomScale = 0; 2607 } 2608 float scale = zoomScale * mInvInitialZoomScale; 2609 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 2610 - mZoomCenterX); 2611 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 2612 * zoomScale)) + mScrollX; 2613 int ty = Math.round(scale * (mInitialScrollY + mZoomCenterY) 2614 - mZoomCenterY); 2615 ty = -pinLoc(ty, getViewHeight(), Math.round(mContentHeight 2616 * zoomScale)) + mScrollY; 2617 canvas.translate(tx, ty); 2618 canvas.scale(zoomScale, zoomScale); 2619 } else { 2620 canvas.scale(mActualScale, mActualScale); 2621 } 2622 2623 mWebViewCore.drawContentPicture(canvas, color, animateZoom, 2624 animateScroll); 2625 2626 if (mNativeClass == 0) return; 2627 if (mShiftIsPressed) { 2628 if (mTouchSelection) { 2629 nativeDrawSelectionRegion(canvas); 2630 } else { 2631 nativeDrawSelection(canvas, mSelectX, mSelectY, 2632 mExtendSelection); 2633 } 2634 } else if (drawCursorRing) { 2635 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 2636 mTouchMode = TOUCH_SHORTPRESS_MODE; 2637 HitTestResult hitTest = getHitTestResult(); 2638 if (hitTest != null && 2639 hitTest.mType != HitTestResult.UNKNOWN_TYPE) { 2640 mPrivateHandler.sendMessageDelayed(mPrivateHandler 2641 .obtainMessage(SWITCH_TO_LONGPRESS), 2642 LONG_PRESS_TIMEOUT); 2643 } 2644 } 2645 nativeDrawCursorRing(canvas); 2646 } 2647 // When the FindDialog is up, only draw the matches if we are not in 2648 // the process of scrolling them into view. 2649 if (mFindIsUp && !animateScroll) { 2650 nativeDrawMatches(canvas); 2651 } 2652 } 2653 2654 private float scrollZoomGridScale(float invScale) { 2655 float griddedInvScale = (int) (invScale * SCROLL_ZOOM_GRID) 2656 / (float) SCROLL_ZOOM_GRID; 2657 return 1.0f / griddedInvScale; 2658 } 2659 2660 private float scrollZoomX(float scale) { 2661 int width = getViewWidth(); 2662 float maxScrollZoomX = mContentWidth * scale - width; 2663 int maxX = mContentWidth - width; 2664 return -(maxScrollZoomX > 0 ? mZoomScrollX * maxScrollZoomX / maxX 2665 : maxScrollZoomX / 2); 2666 } 2667 2668 private float scrollZoomY(float scale) { 2669 int height = getViewHeight(); 2670 float maxScrollZoomY = mContentHeight * scale - height; 2671 int maxY = mContentHeight - height; 2672 return -(maxScrollZoomY > 0 ? mZoomScrollY * maxScrollZoomY / maxY 2673 : maxScrollZoomY / 2); 2674 } 2675 2676 private void drawMagnifyFrame(Canvas canvas, Rect frame, Paint paint) { 2677 final float ADORNMENT_LEN = 16.0f; 2678 float width = frame.width(); 2679 float height = frame.height(); 2680 Path path = new Path(); 2681 path.moveTo(-ADORNMENT_LEN, -ADORNMENT_LEN); 2682 path.lineTo(0, 0); 2683 path.lineTo(width, 0); 2684 path.lineTo(width + ADORNMENT_LEN, -ADORNMENT_LEN); 2685 path.moveTo(-ADORNMENT_LEN, height + ADORNMENT_LEN); 2686 path.lineTo(0, height); 2687 path.lineTo(width, height); 2688 path.lineTo(width + ADORNMENT_LEN, height + ADORNMENT_LEN); 2689 path.moveTo(0, 0); 2690 path.lineTo(0, height); 2691 path.moveTo(width, 0); 2692 path.lineTo(width, height); 2693 path.offset(frame.left, frame.top); 2694 canvas.drawPath(path, paint); 2695 } 2696 2697 // Returns frame surrounding magified portion of screen while 2698 // scroll-zoom is enabled. The frame is also used to center the 2699 // zoom-in zoom-out points at the start and end of the animation. 2700 private Rect scrollZoomFrame(int width, int height, float halfScale) { 2701 Rect scrollFrame = new Rect(); 2702 scrollFrame.set(mZoomScrollX, mZoomScrollY, 2703 mZoomScrollX + width, mZoomScrollY + height); 2704 if (mContentWidth * mZoomScrollLimit < width) { 2705 float scale = zoomFrameScaleX(width, halfScale, 1.0f); 2706 float offsetX = (width * scale - width) * 0.5f; 2707 scrollFrame.left -= offsetX; 2708 scrollFrame.right += offsetX; 2709 } 2710 if (mContentHeight * mZoomScrollLimit < height) { 2711 float scale = zoomFrameScaleY(height, halfScale, 1.0f); 2712 float offsetY = (height * scale - height) * 0.5f; 2713 scrollFrame.top -= offsetY; 2714 scrollFrame.bottom += offsetY; 2715 } 2716 return scrollFrame; 2717 } 2718 2719 private float zoomFrameScaleX(int width, float halfScale, float noScale) { 2720 // mContentWidth > width > mContentWidth * mZoomScrollLimit 2721 if (mContentWidth <= width) { 2722 return halfScale; 2723 } 2724 float part = (width - mContentWidth * mZoomScrollLimit) 2725 / (width * (1 - mZoomScrollLimit)); 2726 return halfScale * part + noScale * (1.0f - part); 2727 } 2728 2729 private float zoomFrameScaleY(int height, float halfScale, float noScale) { 2730 if (mContentHeight <= height) { 2731 return halfScale; 2732 } 2733 float part = (height - mContentHeight * mZoomScrollLimit) 2734 / (height * (1 - mZoomScrollLimit)); 2735 return halfScale * part + noScale * (1.0f - part); 2736 } 2737 2738 private float scrollZoomMagScale(float invScale) { 2739 return (invScale * 2 + mInvActualScale) / 3; 2740 } 2741 2742 private void scrollZoomDraw(Canvas canvas) { 2743 float invScale = mZoomScrollInvLimit; 2744 int elapsed = 0; 2745 if (mTouchMode != SCROLL_ZOOM_OUT) { 2746 elapsed = (int) Math.min(System.currentTimeMillis() 2747 - mZoomScrollStart, SCROLL_ZOOM_DURATION); 2748 float transitionScale = (mZoomScrollInvLimit - mInvActualScale) 2749 * elapsed / SCROLL_ZOOM_DURATION; 2750 if (mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 2751 invScale = mInvActualScale + transitionScale; 2752 } else { /* if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) */ 2753 invScale = mZoomScrollInvLimit - transitionScale; 2754 } 2755 } 2756 float scale = scrollZoomGridScale(invScale); 2757 invScale = 1.0f / scale; 2758 int width = getViewWidth(); 2759 int height = getViewHeight(); 2760 float halfScale = scrollZoomMagScale(invScale); 2761 Rect scrollFrame = scrollZoomFrame(width, height, halfScale); 2762 if (elapsed == SCROLL_ZOOM_DURATION) { 2763 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 2764 setHorizontalScrollBarEnabled(true); 2765 setVerticalScrollBarEnabled(true); 2766 rebuildWebTextView(); 2767 scrollTo((int) (scrollFrame.centerX() * mActualScale) 2768 - (width >> 1), (int) (scrollFrame.centerY() 2769 * mActualScale) - (height >> 1)); 2770 mTouchMode = TOUCH_DONE_MODE; 2771 // Show all the child views once we are done. 2772 mViewManager.showAll(); 2773 } else { 2774 mTouchMode = SCROLL_ZOOM_OUT; 2775 } 2776 } 2777 float newX = scrollZoomX(scale); 2778 float newY = scrollZoomY(scale); 2779 if (DebugFlags.WEB_VIEW) { 2780 Log.v(LOGTAG, "scrollZoomDraw scale=" + scale + " + (" + newX 2781 + ", " + newY + ") mZoomScroll=(" + mZoomScrollX + ", " 2782 + mZoomScrollY + ")" + " invScale=" + invScale + " scale=" 2783 + scale); 2784 } 2785 canvas.translate(newX, newY); 2786 canvas.scale(scale, scale); 2787 boolean animating = mTouchMode != SCROLL_ZOOM_OUT; 2788 if (mDrawHistory) { 2789 int sc = canvas.save(Canvas.CLIP_SAVE_FLAG); 2790 Rect clip = new Rect(0, 0, mHistoryPicture.getWidth(), 2791 mHistoryPicture.getHeight()); 2792 canvas.clipRect(clip, Region.Op.DIFFERENCE); 2793 canvas.drawColor(mBackgroundColor); 2794 canvas.restoreToCount(sc); 2795 canvas.drawPicture(mHistoryPicture); 2796 } else { 2797 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2798 animating, true); 2799 } 2800 if (mTouchMode == TOUCH_DONE_MODE) { 2801 return; 2802 } 2803 Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); 2804 paint.setStyle(Paint.Style.STROKE); 2805 paint.setStrokeWidth(30.0f); 2806 paint.setARGB(0x50, 0, 0, 0); 2807 int maxX = mContentWidth - width; 2808 int maxY = mContentHeight - height; 2809 if (true) { // experiment: draw hint to place finger off magnify area 2810 drawMagnifyFrame(canvas, scrollFrame, paint); 2811 } else { 2812 canvas.drawRect(scrollFrame, paint); 2813 } 2814 int sc = canvas.save(); 2815 canvas.clipRect(scrollFrame); 2816 float halfX = (float) mZoomScrollX / maxX; 2817 if (mContentWidth * mZoomScrollLimit < width) { 2818 halfX = zoomFrameScaleX(width, 0.5f, halfX); 2819 } 2820 float halfY = (float) mZoomScrollY / maxY; 2821 if (mContentHeight * mZoomScrollLimit < height) { 2822 halfY = zoomFrameScaleY(height, 0.5f, halfY); 2823 } 2824 canvas.scale(halfScale, halfScale, mZoomScrollX + width * halfX 2825 , mZoomScrollY + height * halfY); 2826 if (DebugFlags.WEB_VIEW) { 2827 Log.v(LOGTAG, "scrollZoomDraw halfScale=" + halfScale + " w/h=(" 2828 + width + ", " + height + ") half=(" + halfX + ", " 2829 + halfY + ")"); 2830 } 2831 if (mDrawHistory) { 2832 canvas.drawPicture(mHistoryPicture); 2833 } else { 2834 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2835 animating, false); 2836 } 2837 canvas.restoreToCount(sc); 2838 if (mTouchMode != SCROLL_ZOOM_OUT) { 2839 invalidate(); 2840 } 2841 } 2842 2843 private void zoomScrollTap(float x, float y) { 2844 float scale = scrollZoomGridScale(mZoomScrollInvLimit); 2845 float left = scrollZoomX(scale); 2846 float top = scrollZoomY(scale); 2847 int width = getViewWidth(); 2848 int height = getViewHeight(); 2849 x -= width * scale / 2; 2850 y -= height * scale / 2; 2851 mZoomScrollX = Math.min(mContentWidth - width 2852 , Math.max(0, (int) ((x - left) / scale))); 2853 mZoomScrollY = Math.min(mContentHeight - height 2854 , Math.max(0, (int) ((y - top) / scale))); 2855 if (DebugFlags.WEB_VIEW) { 2856 Log.v(LOGTAG, "zoomScrollTap scale=" + scale + " + (" + left 2857 + ", " + top + ") mZoomScroll=(" + mZoomScrollX + ", " 2858 + mZoomScrollY + ")" + " x=" + x + " y=" + y); 2859 } 2860 } 2861 2862 /** 2863 * @hide 2864 */ 2865 public boolean canZoomScrollOut() { 2866 if (mContentWidth == 0 || mContentHeight == 0) { 2867 return false; 2868 } 2869 int width = getViewWidth(); 2870 int height = getViewHeight(); 2871 float x = (float) width / (float) mContentWidth; 2872 float y = (float) height / (float) mContentHeight; 2873 mZoomScrollLimit = Math.max(DEFAULT_MIN_ZOOM_SCALE, Math.min(x, y)); 2874 mZoomScrollInvLimit = 1.0f / mZoomScrollLimit; 2875 if (DebugFlags.WEB_VIEW) { 2876 Log.v(LOGTAG, "canZoomScrollOut" 2877 + " mInvActualScale=" + mInvActualScale 2878 + " mZoomScrollLimit=" + mZoomScrollLimit 2879 + " mZoomScrollInvLimit=" + mZoomScrollInvLimit 2880 + " mContentWidth=" + mContentWidth 2881 + " mContentHeight=" + mContentHeight 2882 ); 2883 } 2884 // don't zoom out unless magnify area is at least half as wide 2885 // or tall as content 2886 float limit = mZoomScrollLimit * 2; 2887 return mContentWidth >= width * limit 2888 || mContentHeight >= height * limit; 2889 } 2890 2891 private void startZoomScrollOut() { 2892 setHorizontalScrollBarEnabled(false); 2893 setVerticalScrollBarEnabled(false); 2894 if (getSettings().getBuiltInZoomControls()) { 2895 if (mZoomButtonsController.isVisible()) { 2896 mZoomButtonsController.setVisible(false); 2897 } 2898 } else { 2899 if (mZoomControlRunnable != null) { 2900 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 2901 } 2902 if (mZoomControls != null) { 2903 mZoomControls.hide(); 2904 } 2905 } 2906 int width = getViewWidth(); 2907 int height = getViewHeight(); 2908 int halfW = width >> 1; 2909 mLastTouchX = halfW; 2910 int halfH = height >> 1; 2911 mLastTouchY = halfH; 2912 mScroller.abortAnimation(); 2913 mZoomScrollStart = System.currentTimeMillis(); 2914 Rect zoomFrame = scrollZoomFrame(width, height 2915 , scrollZoomMagScale(mZoomScrollInvLimit)); 2916 mZoomScrollX = Math.max(0, (int) ((mScrollX + halfW) * mInvActualScale) 2917 - (zoomFrame.width() >> 1)); 2918 mZoomScrollY = Math.max(0, (int) ((mScrollY + halfH) * mInvActualScale) 2919 - (zoomFrame.height() >> 1)); 2920 scrollTo(0, 0); // triggers inval, starts animation 2921 clearTextEntry(); 2922 if (DebugFlags.WEB_VIEW) { 2923 Log.v(LOGTAG, "startZoomScrollOut mZoomScroll=(" 2924 + mZoomScrollX + ", " + mZoomScrollY +")"); 2925 } 2926 } 2927 2928 /** 2929 * @hide 2930 */ 2931 public void zoomScrollOut() { 2932 if (canZoomScrollOut() == false) { 2933 mTouchMode = TOUCH_DONE_MODE; 2934 return; 2935 } 2936 // Hide the child views while in this mode. 2937 mViewManager.hideAll(); 2938 startZoomScrollOut(); 2939 mTouchMode = SCROLL_ZOOM_ANIMATION_OUT; 2940 invalidate(); 2941 } 2942 2943 private void moveZoomScrollWindow(float x, float y) { 2944 if (Math.abs(x - mLastZoomScrollRawX) < 1.5f 2945 && Math.abs(y - mLastZoomScrollRawY) < 1.5f) { 2946 return; 2947 } 2948 mLastZoomScrollRawX = x; 2949 mLastZoomScrollRawY = y; 2950 int oldX = mZoomScrollX; 2951 int oldY = mZoomScrollY; 2952 int width = getViewWidth(); 2953 int height = getViewHeight(); 2954 int maxZoomX = mContentWidth - width; 2955 if (maxZoomX > 0) { 2956 int maxScreenX = width - (int) Math.ceil(width 2957 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 2958 if (DebugFlags.WEB_VIEW) { 2959 Log.v(LOGTAG, "moveZoomScrollWindow-X" 2960 + " maxScreenX=" + maxScreenX + " width=" + width 2961 + " mZoomScrollLimit=" + mZoomScrollLimit + " x=" + x); 2962 } 2963 x += maxScreenX * mLastScrollX / maxZoomX - mLastTouchX; 2964 x *= Math.max(maxZoomX / maxScreenX, mZoomScrollInvLimit); 2965 mZoomScrollX = Math.max(0, Math.min(maxZoomX, (int) x)); 2966 } 2967 int maxZoomY = mContentHeight - height; 2968 if (maxZoomY > 0) { 2969 int maxScreenY = height - (int) Math.ceil(height 2970 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 2971 if (DebugFlags.WEB_VIEW) { 2972 Log.v(LOGTAG, "moveZoomScrollWindow-Y" 2973 + " maxScreenY=" + maxScreenY + " height=" + height 2974 + " mZoomScrollLimit=" + mZoomScrollLimit + " y=" + y); 2975 } 2976 y += maxScreenY * mLastScrollY / maxZoomY - mLastTouchY; 2977 y *= Math.max(maxZoomY / maxScreenY, mZoomScrollInvLimit); 2978 mZoomScrollY = Math.max(0, Math.min(maxZoomY, (int) y)); 2979 } 2980 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 2981 invalidate(); 2982 } 2983 if (DebugFlags.WEB_VIEW) { 2984 Log.v(LOGTAG, "moveZoomScrollWindow" 2985 + " scrollTo=(" + mZoomScrollX + ", " + mZoomScrollY + ")" 2986 + " mLastTouch=(" + mLastTouchX + ", " + mLastTouchY + ")" 2987 + " maxZoom=(" + maxZoomX + ", " + maxZoomY + ")" 2988 + " last=("+mLastScrollX+", "+mLastScrollY+")" 2989 + " x=" + x + " y=" + y); 2990 } 2991 } 2992 2993 private void setZoomScrollIn() { 2994 mZoomScrollStart = System.currentTimeMillis(); 2995 } 2996 2997 private float mZoomScrollLimit; 2998 private float mZoomScrollInvLimit; 2999 private int mLastScrollX; 3000 private int mLastScrollY; 3001 private long mZoomScrollStart; 3002 private int mZoomScrollX; 3003 private int mZoomScrollY; 3004 private float mLastZoomScrollRawX = -1000.0f; 3005 private float mLastZoomScrollRawY = -1000.0f; 3006 // The zoomed scale varies from 1.0 to DEFAULT_MIN_ZOOM_SCALE == 0.25. 3007 // The zoom animation duration SCROLL_ZOOM_DURATION == 0.5. 3008 // Two pressures compete for gridding; a high frame rate (e.g. 20 fps) 3009 // and minimizing font cache allocations (fewer frames is better). 3010 // A SCROLL_ZOOM_GRID of 6 permits about 20 zoom levels over 0.5 seconds: 3011 // the inverse of: 1.0, 1.16, 1.33, 1.5, 1.67, 1.84, 2.0, etc. to 4.0 3012 private static final int SCROLL_ZOOM_GRID = 6; 3013 private static final int SCROLL_ZOOM_DURATION = 500; 3014 // Make it easier to get to the bottom of a document by reserving a 32 3015 // pixel buffer, for when the starting drag is a bit below the bottom of 3016 // the magnify frame. 3017 private static final int SCROLL_ZOOM_FINGER_BUFFER = 32; 3018 3019 // draw history 3020 private boolean mDrawHistory = false; 3021 private Picture mHistoryPicture = null; 3022 private int mHistoryWidth = 0; 3023 private int mHistoryHeight = 0; 3024 3025 // Only check the flag, can be called from WebCore thread 3026 boolean drawHistory() { 3027 return mDrawHistory; 3028 } 3029 3030 // Should only be called in UI thread 3031 void switchOutDrawHistory() { 3032 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3033 if (mDrawHistory && mWebViewCore.pictureReady()) { 3034 mDrawHistory = false; 3035 invalidate(); 3036 int oldScrollX = mScrollX; 3037 int oldScrollY = mScrollY; 3038 mScrollX = pinLocX(mScrollX); 3039 mScrollY = pinLocY(mScrollY); 3040 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3041 mUserScroll = false; 3042 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3043 oldScrollY); 3044 } 3045 sendOurVisibleRect(); 3046 } 3047 } 3048 3049 WebViewCore.CursorData cursorData() { 3050 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3051 result.mMoveGeneration = nativeMoveGeneration(); 3052 result.mFrame = nativeCursorFramePointer(); 3053 Point position = nativeCursorPosition(); 3054 result.mX = position.x; 3055 result.mY = position.y; 3056 return result; 3057 } 3058 3059 /** 3060 * Delete text from start to end in the focused textfield. If there is no 3061 * focus, or if start == end, silently fail. If start and end are out of 3062 * order, swap them. 3063 * @param start Beginning of selection to delete. 3064 * @param end End of selection to delete. 3065 */ 3066 /* package */ void deleteSelection(int start, int end) { 3067 mTextGeneration++; 3068 WebViewCore.DeleteSelectionData data 3069 = new WebViewCore.DeleteSelectionData(); 3070 data.mStart = start; 3071 data.mEnd = end; 3072 data.mTextGeneration = mTextGeneration; 3073 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, data); 3074 } 3075 3076 /** 3077 * Set the selection to (start, end) in the focused textfield. If start and 3078 * end are out of order, swap them. 3079 * @param start Beginning of selection. 3080 * @param end End of selection. 3081 */ 3082 /* package */ void setSelection(int start, int end) { 3083 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3084 } 3085 3086 // Called by JNI when a touch event puts a textfield into focus. 3087 private void displaySoftKeyboard(boolean isTextView) { 3088 InputMethodManager imm = (InputMethodManager) 3089 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3090 3091 if (isTextView) { 3092 imm.showSoftInput(mWebTextView, 0); 3093 // Now we need to fake a touch event to place the cursor where the 3094 // user touched. 3095 AbsoluteLayout.LayoutParams lp = (AbsoluteLayout.LayoutParams) 3096 mWebTextView.getLayoutParams(); 3097 if (lp != null) { 3098 // Take the last touch and adjust for the location of the 3099 // WebTextView. 3100 float x = mLastTouchX + (float) (mScrollX - lp.x); 3101 float y = mLastTouchY + (float) (mScrollY - lp.y); 3102 mWebTextView.fakeTouchEvent(x, y); 3103 } 3104 if (mInZoomOverview) { 3105 // if in zoom overview mode, call doDoubleTap() to bring it back 3106 // to normal mode so that user can enter text. 3107 doDoubleTap(); 3108 } 3109 } 3110 else { // used by plugins 3111 imm.showSoftInput(this, 0); 3112 } 3113 } 3114 3115 // Called by WebKit to instruct the UI to hide the keyboard 3116 private void hideSoftKeyboard() { 3117 InputMethodManager imm = (InputMethodManager) 3118 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3119 3120 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3121 } 3122 3123 /* 3124 * This method checks the current focus and cursor and potentially rebuilds 3125 * mWebTextView to have the appropriate properties, such as password, 3126 * multiline, and what text it contains. It also removes it if necessary. 3127 */ 3128 /* package */ void rebuildWebTextView() { 3129 // If the WebView does not have focus, do nothing until it gains focus. 3130 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus()) 3131 || (mTouchMode >= FIRST_SCROLL_ZOOM 3132 && mTouchMode <= LAST_SCROLL_ZOOM)) { 3133 return; 3134 } 3135 boolean alreadyThere = inEditingMode(); 3136 // inEditingMode can only return true if mWebTextView is non-null, 3137 // so we can safely call remove() if (alreadyThere) 3138 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3139 if (alreadyThere) { 3140 mWebTextView.remove(); 3141 } 3142 return; 3143 } 3144 // At this point, we know we have found an input field, so go ahead 3145 // and create the WebTextView if necessary. 3146 if (mWebTextView == null) { 3147 mWebTextView = new WebTextView(mContext, WebView.this); 3148 // Initialize our generation number. 3149 mTextGeneration = 0; 3150 } 3151 mWebTextView.setTextSize(contentToView(nativeFocusCandidateTextSize())); 3152 Rect visibleRect = new Rect(); 3153 calcOurContentVisibleRect(visibleRect); 3154 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3155 // should be in content coordinates. 3156 Rect bounds = nativeFocusCandidateNodeBounds(); 3157 if (!Rect.intersects(bounds, visibleRect)) { 3158 mWebTextView.bringIntoView(); 3159 } 3160 String text = nativeFocusCandidateText(); 3161 int nodePointer = nativeFocusCandidatePointer(); 3162 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3163 // It is possible that we have the same textfield, but it has moved, 3164 // i.e. In the case of opening/closing the screen. 3165 // In that case, we need to set the dimensions, but not the other 3166 // aspects. 3167 // We also need to restore the selection, which gets wrecked by 3168 // calling setTextEntryRect. 3169 Spannable spannable = (Spannable) mWebTextView.getText(); 3170 int start = Selection.getSelectionStart(spannable); 3171 int end = Selection.getSelectionEnd(spannable); 3172 // If the text has been changed by webkit, update it. However, if 3173 // there has been more UI text input, ignore it. We will receive 3174 // another update when that text is recognized. 3175 if (text != null && !text.equals(spannable.toString()) 3176 && nativeTextGeneration() == mTextGeneration) { 3177 mWebTextView.setTextAndKeepSelection(text); 3178 } else { 3179 Selection.setSelection(spannable, start, end); 3180 } 3181 } else { 3182 Rect vBox = contentToView(bounds); 3183 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3184 vBox.height()); 3185 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3186 Gravity.RIGHT : Gravity.NO_GRAVITY); 3187 // this needs to be called before update adapter thread starts to 3188 // ensure the mWebTextView has the same node pointer 3189 mWebTextView.setNodePointer(nodePointer); 3190 int maxLength = -1; 3191 boolean isTextField = nativeFocusCandidateIsTextField(); 3192 if (isTextField) { 3193 maxLength = nativeFocusCandidateMaxLength(); 3194 String name = nativeFocusCandidateName(); 3195 if (mWebViewCore.getSettings().getSaveFormData() 3196 && name != null) { 3197 Message update = mPrivateHandler.obtainMessage( 3198 REQUEST_FORM_DATA, nodePointer); 3199 RequestFormData updater = new RequestFormData(name, 3200 getUrl(), update); 3201 Thread t = new Thread(updater); 3202 t.start(); 3203 } 3204 } 3205 mWebTextView.setMaxLength(maxLength); 3206 AutoCompleteAdapter adapter = null; 3207 mWebTextView.setAdapterCustom(adapter); 3208 mWebTextView.setSingleLine(isTextField); 3209 mWebTextView.setInPassword(nativeFocusCandidateIsPassword()); 3210 if (null == text) { 3211 mWebTextView.setText("", 0, 0); 3212 if (DebugFlags.WEB_VIEW) { 3213 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3214 } 3215 } else { 3216 // Change to true to enable the old style behavior, where 3217 // entering a textfield/textarea always set the selection to the 3218 // whole field. This was desirable for the case where the user 3219 // intends to scroll past the field using the trackball. 3220 // However, it causes a problem when replying to emails - the 3221 // user expects the cursor to be at the beginning of the 3222 // textarea. Testing out a new behavior, where textfields set 3223 // selection at the end, and textareas at the beginning. 3224 if (false) { 3225 mWebTextView.setText(text, 0, text.length()); 3226 } else if (isTextField) { 3227 int length = text.length(); 3228 mWebTextView.setText(text, length, length); 3229 if (DebugFlags.WEB_VIEW) { 3230 Log.v(LOGTAG, "rebuildWebTextView length=" + length); 3231 } 3232 } else { 3233 mWebTextView.setText(text, 0, 0); 3234 if (DebugFlags.WEB_VIEW) { 3235 Log.v(LOGTAG, "rebuildWebTextView !isTextField"); 3236 } 3237 } 3238 } 3239 mWebTextView.requestFocus(); 3240 } 3241 } 3242 3243 /* 3244 * This class requests an Adapter for the WebTextView which shows past 3245 * entries stored in the database. It is a Runnable so that it can be done 3246 * in its own thread, without slowing down the UI. 3247 */ 3248 private class RequestFormData implements Runnable { 3249 private String mName; 3250 private String mUrl; 3251 private Message mUpdateMessage; 3252 3253 public RequestFormData(String name, String url, Message msg) { 3254 mName = name; 3255 mUrl = url; 3256 mUpdateMessage = msg; 3257 } 3258 3259 public void run() { 3260 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3261 if (pastEntries.size() > 0) { 3262 AutoCompleteAdapter adapter = new 3263 AutoCompleteAdapter(mContext, pastEntries); 3264 mUpdateMessage.obj = adapter; 3265 mUpdateMessage.sendToTarget(); 3266 } 3267 } 3268 } 3269 3270 // This is used to determine long press with the center key. Does not 3271 // affect long press with the trackball/touch. 3272 private boolean mGotCenterDown = false; 3273 3274 @Override 3275 public boolean onKeyDown(int keyCode, KeyEvent event) { 3276 if (DebugFlags.WEB_VIEW) { 3277 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3278 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3279 } 3280 3281 if (mNativeClass == 0) { 3282 return false; 3283 } 3284 3285 // do this hack up front, so it always works, regardless of touch-mode 3286 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3287 mAutoRedraw = !mAutoRedraw; 3288 if (mAutoRedraw) { 3289 invalidate(); 3290 } 3291 return true; 3292 } 3293 3294 // Bubble up the key event if 3295 // 1. it is a system key; or 3296 // 2. the host application wants to handle it; or 3297 // 3. webview is in scroll-zoom state; 3298 if (event.isSystem() 3299 || mCallbackProxy.uiOverrideKeyEvent(event) 3300 || (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM)) { 3301 return false; 3302 } 3303 3304 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3305 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3306 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3307 mExtendSelection = false; 3308 mShiftIsPressed = true; 3309 if (nativeHasCursorNode()) { 3310 Rect rect = nativeCursorNodeBounds(); 3311 mSelectX = contentToView(rect.left); 3312 mSelectY = contentToView(rect.top); 3313 } else { 3314 mSelectX = mScrollX + (int) mLastTouchX; 3315 mSelectY = mScrollY + (int) mLastTouchY; 3316 } 3317 nativeHideCursor(); 3318 } 3319 3320 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3321 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3322 // always handle the navigation keys in the UI thread 3323 switchOutDrawHistory(); 3324 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3325 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3326 return true; 3327 } 3328 // Bubble up the key event as WebView doesn't handle it 3329 return false; 3330 } 3331 3332 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3333 switchOutDrawHistory(); 3334 if (event.getRepeatCount() == 0) { 3335 mGotCenterDown = true; 3336 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3337 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3338 // Already checked mNativeClass, so we do not need to check it 3339 // again. 3340 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3341 return true; 3342 } 3343 // Bubble up the key event as WebView doesn't handle it 3344 return false; 3345 } 3346 3347 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3348 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3349 // turn off copy select if a shift-key combo is pressed 3350 mExtendSelection = mShiftIsPressed = false; 3351 if (mTouchMode == TOUCH_SELECT_MODE) { 3352 mTouchMode = TOUCH_INIT_MODE; 3353 } 3354 } 3355 3356 if (getSettings().getNavDump()) { 3357 switch (keyCode) { 3358 case KeyEvent.KEYCODE_4: 3359 // "/data/data/com.android.browser/displayTree.txt" 3360 nativeDumpDisplayTree(getUrl()); 3361 break; 3362 case KeyEvent.KEYCODE_5: 3363 case KeyEvent.KEYCODE_6: 3364 // 5: dump the dom tree to the file 3365 // "/data/data/com.android.browser/domTree.txt" 3366 // 6: dump the dom tree to the adb log 3367 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, 3368 (keyCode == KeyEvent.KEYCODE_5) ? 1 : 0, 0); 3369 break; 3370 case KeyEvent.KEYCODE_7: 3371 case KeyEvent.KEYCODE_8: 3372 // 7: dump the render tree to the file 3373 // "/data/data/com.android.browser/renderTree.txt" 3374 // 8: dump the render tree to the adb log 3375 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, 3376 (keyCode == KeyEvent.KEYCODE_7) ? 1 : 0, 0); 3377 break; 3378 case KeyEvent.KEYCODE_9: 3379 nativeInstrumentReport(); 3380 return true; 3381 } 3382 } 3383 3384 if (nativeCursorIsPlugin()) { 3385 nativeUpdatePluginReceivesEvents(); 3386 invalidate(); 3387 } else if (nativeCursorIsTextInput()) { 3388 // This message will put the node in focus, for the DOM's notion 3389 // of focus, and make the focuscontroller active 3390 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3391 nativeCursorNodePointer()); 3392 // This will bring up the WebTextView and put it in focus, for 3393 // our view system's notion of focus 3394 rebuildWebTextView(); 3395 // Now we need to pass the event to it 3396 return mWebTextView.onKeyDown(keyCode, event); 3397 } else if (nativeHasFocusNode()) { 3398 // In this case, the cursor is not on a text input, but the focus 3399 // might be. Check it, and if so, hand over to the WebTextView. 3400 rebuildWebTextView(); 3401 if (inEditingMode()) { 3402 return mWebTextView.onKeyDown(keyCode, event); 3403 } 3404 } 3405 3406 // TODO: should we pass all the keys to DOM or check the meta tag 3407 if (nativeCursorWantsKeyEvents() || true) { 3408 // pass the key to DOM 3409 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3410 // return true as DOM handles the key 3411 return true; 3412 } 3413 3414 // Bubble up the key event as WebView doesn't handle it 3415 return false; 3416 } 3417 3418 @Override 3419 public boolean onKeyUp(int keyCode, KeyEvent event) { 3420 if (DebugFlags.WEB_VIEW) { 3421 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3422 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3423 } 3424 3425 if (mNativeClass == 0) { 3426 return false; 3427 } 3428 3429 // special CALL handling when cursor node's href is "tel:XXX" 3430 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3431 String text = nativeCursorText(); 3432 if (!nativeCursorIsTextInput() && text != null 3433 && text.startsWith(SCHEME_TEL)) { 3434 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3435 getContext().startActivity(intent); 3436 return true; 3437 } 3438 } 3439 3440 // Bubble up the key event if 3441 // 1. it is a system key; or 3442 // 2. the host application wants to handle it; 3443 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3444 return false; 3445 } 3446 3447 // special handling in scroll_zoom state 3448 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 3449 if (KeyEvent.KEYCODE_DPAD_CENTER == keyCode 3450 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN) { 3451 setZoomScrollIn(); 3452 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 3453 invalidate(); 3454 return true; 3455 } 3456 return false; 3457 } 3458 3459 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3460 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3461 if (commitCopy()) { 3462 return true; 3463 } 3464 } 3465 3466 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3467 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3468 // always handle the navigation keys in the UI thread 3469 // Bubble up the key event as WebView doesn't handle it 3470 return false; 3471 } 3472 3473 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3474 // remove the long press message first 3475 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3476 mGotCenterDown = false; 3477 3478 if (mShiftIsPressed) { 3479 return false; 3480 } 3481 if (getSettings().supportZoom() 3482 && mTouchMode == TOUCH_DOUBLECLICK_MODE) { 3483 zoomScrollOut(); 3484 } else { 3485 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3486 .obtainMessage(SWITCH_TO_CLICK), TAP_TIMEOUT); 3487 if (DebugFlags.WEB_VIEW) { 3488 Log.v(LOGTAG, "TOUCH_DOUBLECLICK_MODE"); 3489 } 3490 mTouchMode = TOUCH_DOUBLECLICK_MODE; 3491 } 3492 return true; 3493 } 3494 3495 // TODO: should we pass all the keys to DOM or check the meta tag 3496 if (nativeCursorWantsKeyEvents() || true) { 3497 // pass the key to DOM 3498 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3499 // return true as DOM handles the key 3500 return true; 3501 } 3502 3503 // Bubble up the key event as WebView doesn't handle it 3504 return false; 3505 } 3506 3507 /** 3508 * @hide 3509 */ 3510 public void emulateShiftHeld() { 3511 mExtendSelection = false; 3512 mShiftIsPressed = true; 3513 nativeHideCursor(); 3514 } 3515 3516 private boolean commitCopy() { 3517 boolean copiedSomething = false; 3518 if (mExtendSelection) { 3519 // copy region so core operates on copy without touching orig. 3520 Region selection = new Region(nativeGetSelection()); 3521 if (selection.isEmpty() == false) { 3522 Toast.makeText(mContext 3523 , com.android.internal.R.string.text_copied 3524 , Toast.LENGTH_SHORT).show(); 3525 mWebViewCore.sendMessage(EventHub.GET_SELECTION, selection); 3526 copiedSomething = true; 3527 } 3528 mExtendSelection = false; 3529 } 3530 mShiftIsPressed = false; 3531 if (mTouchMode == TOUCH_SELECT_MODE) { 3532 mTouchMode = TOUCH_INIT_MODE; 3533 } 3534 return copiedSomething; 3535 } 3536 3537 // Set this as a hierarchy change listener so we can know when this view 3538 // is removed and still have access to our parent. 3539 @Override 3540 protected void onAttachedToWindow() { 3541 super.onAttachedToWindow(); 3542 ViewParent parent = getParent(); 3543 if (parent instanceof ViewGroup) { 3544 ViewGroup p = (ViewGroup) parent; 3545 p.setOnHierarchyChangeListener(this); 3546 } 3547 } 3548 3549 @Override 3550 protected void onDetachedFromWindow() { 3551 super.onDetachedFromWindow(); 3552 ViewParent parent = getParent(); 3553 if (parent instanceof ViewGroup) { 3554 ViewGroup p = (ViewGroup) parent; 3555 p.setOnHierarchyChangeListener(null); 3556 } 3557 3558 // Clean up the zoom controller 3559 mZoomButtonsController.setVisible(false); 3560 } 3561 3562 // Implementation for OnHierarchyChangeListener 3563 public void onChildViewAdded(View parent, View child) {} 3564 3565 public void onChildViewRemoved(View p, View child) { 3566 if (child == this) { 3567 clearTextEntry(); 3568 } 3569 } 3570 3571 /** 3572 * @deprecated WebView should not have implemented 3573 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3574 * does nothing now. 3575 */ 3576 @Deprecated 3577 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3578 } 3579 3580 // To avoid drawing the cursor ring, and remove the TextView when our window 3581 // loses focus. 3582 @Override 3583 public void onWindowFocusChanged(boolean hasWindowFocus) { 3584 if (hasWindowFocus) { 3585 if (hasFocus()) { 3586 // If our window regained focus, and we have focus, then begin 3587 // drawing the cursor ring 3588 mDrawCursorRing = true; 3589 if (mNativeClass != 0) { 3590 nativeRecordButtons(true, false, true); 3591 if (inEditingMode()) { 3592 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3593 } 3594 } 3595 } else { 3596 // If our window gained focus, but we do not have it, do not 3597 // draw the cursor ring. 3598 mDrawCursorRing = false; 3599 // We do not call nativeRecordButtons here because we assume 3600 // that when we lost focus, or window focus, it got called with 3601 // false for the first parameter 3602 } 3603 } else { 3604 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3605 /* 3606 * The zoom controls come in their own window, so our window 3607 * loses focus. Our policy is to not draw the cursor ring if 3608 * our window is not focused, but this is an exception since 3609 * the user can still navigate the web page with the zoom 3610 * controls showing. 3611 */ 3612 // If our window has lost focus, stop drawing the cursor ring 3613 mDrawCursorRing = false; 3614 } 3615 mGotKeyDown = false; 3616 mShiftIsPressed = false; 3617 if (mNativeClass != 0) { 3618 nativeRecordButtons(false, false, true); 3619 } 3620 setFocusControllerInactive(); 3621 } 3622 invalidate(); 3623 super.onWindowFocusChanged(hasWindowFocus); 3624 } 3625 3626 /* 3627 * Pass a message to WebCore Thread, telling the WebCore::Page's 3628 * FocusController to be "inactive" so that it will 3629 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3630 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3631 */ 3632 /* package */ void setFocusControllerInactive() { 3633 // Do not need to also check whether mWebViewCore is null, because 3634 // mNativeClass is only set if mWebViewCore is non null 3635 if (mNativeClass == 0) return; 3636 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3637 } 3638 3639 @Override 3640 protected void onFocusChanged(boolean focused, int direction, 3641 Rect previouslyFocusedRect) { 3642 if (DebugFlags.WEB_VIEW) { 3643 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3644 } 3645 if (focused) { 3646 // When we regain focus, if we have window focus, resume drawing 3647 // the cursor ring 3648 if (hasWindowFocus()) { 3649 mDrawCursorRing = true; 3650 if (mNativeClass != 0) { 3651 nativeRecordButtons(true, false, true); 3652 } 3653 //} else { 3654 // The WebView has gained focus while we do not have 3655 // windowfocus. When our window lost focus, we should have 3656 // called nativeRecordButtons(false...) 3657 } 3658 } else { 3659 // When we lost focus, unless focus went to the TextView (which is 3660 // true if we are in editing mode), stop drawing the cursor ring. 3661 if (!inEditingMode()) { 3662 mDrawCursorRing = false; 3663 if (mNativeClass != 0) { 3664 nativeRecordButtons(false, false, true); 3665 } 3666 setFocusControllerInactive(); 3667 } 3668 mGotKeyDown = false; 3669 } 3670 3671 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3672 } 3673 3674 @Override 3675 protected void onSizeChanged(int w, int h, int ow, int oh) { 3676 super.onSizeChanged(w, h, ow, oh); 3677 // Center zooming to the center of the screen. 3678 mZoomCenterX = getViewWidth() * .5f; 3679 mZoomCenterY = getViewHeight() * .5f; 3680 3681 // update mMinZoomScale if the minimum zoom scale is not fixed 3682 if (!mMinZoomScaleFixed) { 3683 mMinZoomScale = (float) getViewWidth() 3684 / (mDrawHistory ? mHistoryPicture.getWidth() 3685 : mZoomOverviewWidth); 3686 } 3687 3688 // we always force, in case our height changed, in which case we still 3689 // want to send the notification over to webkit 3690 setNewZoomScale(mActualScale, true); 3691 } 3692 3693 @Override 3694 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3695 super.onScrollChanged(l, t, oldl, oldt); 3696 3697 sendOurVisibleRect(); 3698 } 3699 3700 3701 @Override 3702 public boolean dispatchKeyEvent(KeyEvent event) { 3703 boolean dispatch = true; 3704 3705 if (!inEditingMode()) { 3706 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3707 mGotKeyDown = true; 3708 } else { 3709 if (!mGotKeyDown) { 3710 /* 3711 * We got a key up for which we were not the recipient of 3712 * the original key down. Don't give it to the view. 3713 */ 3714 dispatch = false; 3715 } 3716 mGotKeyDown = false; 3717 } 3718 } 3719 3720 if (dispatch) { 3721 return super.dispatchKeyEvent(event); 3722 } else { 3723 // We didn't dispatch, so let something else handle the key 3724 return false; 3725 } 3726 } 3727 3728 // Here are the snap align logic: 3729 // 1. If it starts nearly horizontally or vertically, snap align; 3730 // 2. If there is a dramitic direction change, let it go; 3731 // 3. If there is a same direction back and forth, lock it. 3732 3733 // adjustable parameters 3734 private int mMinLockSnapReverseDistance; 3735 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 3736 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 3737 3738 @Override 3739 public boolean onTouchEvent(MotionEvent ev) { 3740 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 3741 return false; 3742 } 3743 3744 if (DebugFlags.WEB_VIEW) { 3745 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 3746 + mTouchMode); 3747 } 3748 3749 int action = ev.getAction(); 3750 float x = ev.getX(); 3751 float y = ev.getY(); 3752 long eventTime = ev.getEventTime(); 3753 3754 // Due to the touch screen edge effect, a touch closer to the edge 3755 // always snapped to the edge. As getViewWidth() can be different from 3756 // getWidth() due to the scrollbar, adjusting the point to match 3757 // getViewWidth(). Same applied to the height. 3758 if (x > getViewWidth() - 1) { 3759 x = getViewWidth() - 1; 3760 } 3761 if (y > getViewHeight() - 1) { 3762 y = getViewHeight() - 1; 3763 } 3764 3765 // pass the touch events from UI thread to WebCore thread 3766 if (mForwardTouchEvents && mTouchMode != SCROLL_ZOOM_OUT 3767 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN 3768 && mTouchMode != SCROLL_ZOOM_ANIMATION_OUT 3769 && (action != MotionEvent.ACTION_MOVE || 3770 eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 3771 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 3772 ted.mAction = action; 3773 ted.mX = viewToContent((int) x + mScrollX); 3774 ted.mY = viewToContent((int) y + mScrollY); 3775 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 3776 mLastSentTouchTime = eventTime; 3777 } 3778 3779 int deltaX = (int) (mLastTouchX - x); 3780 int deltaY = (int) (mLastTouchY - y); 3781 3782 switch (action) { 3783 case MotionEvent.ACTION_DOWN: { 3784 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3785 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3786 // no interaction while animation is in progress 3787 break; 3788 } else if (mTouchMode == SCROLL_ZOOM_OUT) { 3789 mLastScrollX = mZoomScrollX; 3790 mLastScrollY = mZoomScrollY; 3791 // If two taps are close, ignore the first tap 3792 } else if (!mScroller.isFinished()) { 3793 mScroller.abortAnimation(); 3794 mTouchMode = TOUCH_DRAG_START_MODE; 3795 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 3796 } else if (mShiftIsPressed) { 3797 mSelectX = mScrollX + (int) x; 3798 mSelectY = mScrollY + (int) y; 3799 mTouchMode = TOUCH_SELECT_MODE; 3800 if (DebugFlags.WEB_VIEW) { 3801 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 3802 } 3803 nativeMoveSelection(viewToContent(mSelectX) 3804 , viewToContent(mSelectY), false); 3805 mTouchSelection = mExtendSelection = true; 3806 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 3807 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 3808 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 3809 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 3810 } else { 3811 // commit the short press action for the previous tap 3812 doShortPress(); 3813 // continue, mTouchMode should be still TOUCH_INIT_MODE 3814 } 3815 } else { 3816 mTouchMode = TOUCH_INIT_MODE; 3817 mPreventDrag = mForwardTouchEvents; 3818 mWebViewCore.sendMessage( 3819 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 3820 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 3821 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 3822 (eventTime - mLastTouchUpTime), eventTime); 3823 } 3824 } 3825 // Trigger the link 3826 if (mTouchMode == TOUCH_INIT_MODE 3827 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3828 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3829 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 3830 } 3831 // Remember where the motion event started 3832 mLastTouchX = x; 3833 mLastTouchY = y; 3834 mLastTouchTime = eventTime; 3835 mVelocityTracker = VelocityTracker.obtain(); 3836 mSnapScrollMode = SNAP_NONE; 3837 break; 3838 } 3839 case MotionEvent.ACTION_MOVE: { 3840 if (mTouchMode == TOUCH_DONE_MODE 3841 || mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3842 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3843 // no dragging during scroll zoom animation 3844 break; 3845 } 3846 if (mTouchMode == SCROLL_ZOOM_OUT) { 3847 // while fully zoomed out, move the virtual window 3848 moveZoomScrollWindow(x, y); 3849 break; 3850 } 3851 mVelocityTracker.addMovement(ev); 3852 3853 if (mTouchMode != TOUCH_DRAG_MODE) { 3854 if (mTouchMode == TOUCH_SELECT_MODE) { 3855 mSelectX = mScrollX + (int) x; 3856 mSelectY = mScrollY + (int) y; 3857 if (DebugFlags.WEB_VIEW) { 3858 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 3859 } 3860 nativeMoveSelection(viewToContent(mSelectX) 3861 , viewToContent(mSelectY), true); 3862 invalidate(); 3863 break; 3864 } 3865 if (mPreventDrag || (deltaX * deltaX + deltaY * deltaY) 3866 < mTouchSlopSquare) { 3867 break; 3868 } 3869 3870 if (mTouchMode == TOUCH_SHORTPRESS_MODE 3871 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3872 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3873 } else if (mTouchMode == TOUCH_INIT_MODE 3874 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3875 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3876 } 3877 3878 // if it starts nearly horizontal or vertical, enforce it 3879 int ax = Math.abs(deltaX); 3880 int ay = Math.abs(deltaY); 3881 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 3882 mSnapScrollMode = SNAP_X; 3883 mSnapPositive = deltaX > 0; 3884 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 3885 mSnapScrollMode = SNAP_Y; 3886 mSnapPositive = deltaY > 0; 3887 } 3888 3889 mTouchMode = TOUCH_DRAG_MODE; 3890 WebViewCore.pauseUpdate(mWebViewCore); 3891 if (!mDragFromTextInput) { 3892 nativeHideCursor(); 3893 } 3894 WebSettings settings = getSettings(); 3895 if (settings.supportZoom() && !mInZoomOverview 3896 && settings.getBuiltInZoomControls() 3897 && !mZoomButtonsController.isVisible() 3898 && (canZoomScrollOut() || 3899 mMinZoomScale < mMaxZoomScale)) { 3900 mZoomButtonsController.setVisible(true); 3901 } 3902 } 3903 3904 // do pan 3905 int newScrollX = pinLocX(mScrollX + deltaX); 3906 deltaX = newScrollX - mScrollX; 3907 int newScrollY = pinLocY(mScrollY + deltaY); 3908 deltaY = newScrollY - mScrollY; 3909 boolean done = false; 3910 if (deltaX == 0 && deltaY == 0) { 3911 done = true; 3912 } else { 3913 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 3914 int ax = Math.abs(deltaX); 3915 int ay = Math.abs(deltaY); 3916 if (mSnapScrollMode == SNAP_X) { 3917 // radical change means getting out of snap mode 3918 if (ay > MAX_SLOPE_FOR_DIAG * ax 3919 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3920 mSnapScrollMode = SNAP_NONE; 3921 } 3922 // reverse direction means lock in the snap mode 3923 if ((ax > MAX_SLOPE_FOR_DIAG * ay) && 3924 ((mSnapPositive && 3925 deltaX < -mMinLockSnapReverseDistance) 3926 || (!mSnapPositive && 3927 deltaX > mMinLockSnapReverseDistance))) { 3928 mSnapScrollMode = SNAP_X_LOCK; 3929 } 3930 } else { 3931 // radical change means getting out of snap mode 3932 if ((ax > MAX_SLOPE_FOR_DIAG * ay) 3933 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3934 mSnapScrollMode = SNAP_NONE; 3935 } 3936 // reverse direction means lock in the snap mode 3937 if ((ay > MAX_SLOPE_FOR_DIAG * ax) && 3938 ((mSnapPositive && 3939 deltaY < -mMinLockSnapReverseDistance) 3940 || (!mSnapPositive && 3941 deltaY > mMinLockSnapReverseDistance))) { 3942 mSnapScrollMode = SNAP_Y_LOCK; 3943 } 3944 } 3945 } 3946 3947 if (mSnapScrollMode == SNAP_X 3948 || mSnapScrollMode == SNAP_X_LOCK) { 3949 scrollBy(deltaX, 0); 3950 mLastTouchX = x; 3951 } else if (mSnapScrollMode == SNAP_Y 3952 || mSnapScrollMode == SNAP_Y_LOCK) { 3953 scrollBy(0, deltaY); 3954 mLastTouchY = y; 3955 } else { 3956 scrollBy(deltaX, deltaY); 3957 mLastTouchX = x; 3958 mLastTouchY = y; 3959 } 3960 mLastTouchTime = eventTime; 3961 mUserScroll = true; 3962 } 3963 3964 if (!getSettings().getBuiltInZoomControls() && !mInZoomOverview) { 3965 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 3966 boolean showMagnify = canZoomScrollOut(); 3967 if (mZoomControls != null && (showPlusMinus || showMagnify)) { 3968 if (mZoomControls.getVisibility() == View.VISIBLE) { 3969 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 3970 } else { 3971 mZoomControls.show(showPlusMinus, showMagnify); 3972 } 3973 mPrivateHandler.postDelayed(mZoomControlRunnable, 3974 ZOOM_CONTROLS_TIMEOUT); 3975 } 3976 } 3977 3978 if (done) { 3979 // return false to indicate that we can't pan out of the 3980 // view space 3981 return false; 3982 } 3983 break; 3984 } 3985 case MotionEvent.ACTION_UP: { 3986 mLastTouchUpTime = eventTime; 3987 switch (mTouchMode) { 3988 case TOUCH_DOUBLE_TAP_MODE: // double tap 3989 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3990 mTouchMode = TOUCH_DONE_MODE; 3991 doDoubleTap(); 3992 break; 3993 case TOUCH_INIT_MODE: // tap 3994 if (ENABLE_DOUBLETAP_ZOOM) { 3995 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3996 if (!mPreventDrag) { 3997 mPrivateHandler.sendMessageDelayed( 3998 mPrivateHandler.obtainMessage( 3999 RELEASE_SINGLE_TAP), 4000 ViewConfiguration.getDoubleTapTimeout()); 4001 } 4002 break; 4003 } 4004 // fall through 4005 case TOUCH_SHORTPRESS_START_MODE: 4006 case TOUCH_SHORTPRESS_MODE: 4007 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4008 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4009 mTouchMode = TOUCH_DONE_MODE; 4010 doShortPress(); 4011 break; 4012 case TOUCH_SELECT_MODE: 4013 commitCopy(); 4014 mTouchSelection = false; 4015 break; 4016 case SCROLL_ZOOM_ANIMATION_IN: 4017 case SCROLL_ZOOM_ANIMATION_OUT: 4018 // no action during scroll animation 4019 break; 4020 case SCROLL_ZOOM_OUT: 4021 if (DebugFlags.WEB_VIEW) { 4022 Log.v(LOGTAG, "ACTION_UP SCROLL_ZOOM_OUT" 4023 + " eventTime - mLastTouchTime=" 4024 + (eventTime - mLastTouchTime)); 4025 } 4026 // for now, always zoom back when the drag completes 4027 if (true || eventTime - mLastTouchTime < TAP_TIMEOUT) { 4028 // but if we tap, zoom in where we tap 4029 if (eventTime - mLastTouchTime < TAP_TIMEOUT) { 4030 zoomScrollTap(x, y); 4031 } 4032 // start zooming in back to the original view 4033 setZoomScrollIn(); 4034 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 4035 invalidate(); 4036 } 4037 break; 4038 case TOUCH_DRAG_MODE: 4039 // if the user waits a while w/o moving before the 4040 // up, we don't want to do a fling 4041 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4042 mVelocityTracker.addMovement(ev); 4043 doFling(); 4044 break; 4045 } 4046 WebViewCore.resumeUpdate(mWebViewCore); 4047 break; 4048 case TOUCH_DRAG_START_MODE: 4049 case TOUCH_DONE_MODE: 4050 // do nothing 4051 break; 4052 } 4053 // we also use mVelocityTracker == null to tell us that we are 4054 // not "moving around", so we can take the slower/prettier 4055 // mode in the drawing code 4056 if (mVelocityTracker != null) { 4057 mVelocityTracker.recycle(); 4058 mVelocityTracker = null; 4059 } 4060 break; 4061 } 4062 case MotionEvent.ACTION_CANCEL: { 4063 // we also use mVelocityTracker == null to tell us that we are 4064 // not "moving around", so we can take the slower/prettier 4065 // mode in the drawing code 4066 if (mVelocityTracker != null) { 4067 mVelocityTracker.recycle(); 4068 mVelocityTracker = null; 4069 } 4070 if (mTouchMode == SCROLL_ZOOM_OUT || 4071 mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 4072 scrollTo(mZoomScrollX, mZoomScrollY); 4073 } else if (mTouchMode == TOUCH_DRAG_MODE) { 4074 WebViewCore.resumeUpdate(mWebViewCore); 4075 } 4076 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4077 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4078 mTouchMode = TOUCH_DONE_MODE; 4079 nativeHideCursor(); 4080 break; 4081 } 4082 } 4083 return true; 4084 } 4085 4086 private long mTrackballFirstTime = 0; 4087 private long mTrackballLastTime = 0; 4088 private float mTrackballRemainsX = 0.0f; 4089 private float mTrackballRemainsY = 0.0f; 4090 private int mTrackballXMove = 0; 4091 private int mTrackballYMove = 0; 4092 private boolean mExtendSelection = false; 4093 private boolean mTouchSelection = false; 4094 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4095 private static final int TRACKBALL_TIMEOUT = 200; 4096 private static final int TRACKBALL_WAIT = 100; 4097 private static final int TRACKBALL_SCALE = 400; 4098 private static final int TRACKBALL_SCROLL_COUNT = 5; 4099 private static final int TRACKBALL_MOVE_COUNT = 10; 4100 private static final int TRACKBALL_MULTIPLIER = 3; 4101 private static final int SELECT_CURSOR_OFFSET = 16; 4102 private int mSelectX = 0; 4103 private int mSelectY = 0; 4104 private boolean mShiftIsPressed = false; 4105 private boolean mTrackballDown = false; 4106 private long mTrackballUpTime = 0; 4107 private long mLastCursorTime = 0; 4108 private Rect mLastCursorBounds; 4109 4110 // Set by default; BrowserActivity clears to interpret trackball data 4111 // directly for movement. Currently, the framework only passes 4112 // arrow key events, not trackball events, from one child to the next 4113 private boolean mMapTrackballToArrowKeys = true; 4114 4115 public void setMapTrackballToArrowKeys(boolean setMap) { 4116 mMapTrackballToArrowKeys = setMap; 4117 } 4118 4119 void resetTrackballTime() { 4120 mTrackballLastTime = 0; 4121 } 4122 4123 @Override 4124 public boolean onTrackballEvent(MotionEvent ev) { 4125 long time = ev.getEventTime(); 4126 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4127 if (ev.getY() > 0) pageDown(true); 4128 if (ev.getY() < 0) pageUp(true); 4129 return true; 4130 } 4131 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4132 mPrivateHandler.removeMessages(SWITCH_TO_CLICK); 4133 mTrackballDown = true; 4134 if (mNativeClass == 0) { 4135 return false; 4136 } 4137 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4138 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4139 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4140 nativeSelectBestAt(mLastCursorBounds); 4141 } 4142 if (DebugFlags.WEB_VIEW) { 4143 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4144 + " time=" + time 4145 + " mLastCursorTime=" + mLastCursorTime); 4146 } 4147 if (isInTouchMode()) requestFocusFromTouch(); 4148 return false; // let common code in onKeyDown at it 4149 } 4150 if (ev.getAction() == MotionEvent.ACTION_UP) { 4151 // LONG_PRESS_CENTER is set in common onKeyDown 4152 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4153 mTrackballDown = false; 4154 mTrackballUpTime = time; 4155 if (mShiftIsPressed) { 4156 if (mExtendSelection) { 4157 commitCopy(); 4158 } else { 4159 mExtendSelection = true; 4160 } 4161 } 4162 if (DebugFlags.WEB_VIEW) { 4163 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4164 + " time=" + time 4165 ); 4166 } 4167 return false; // let common code in onKeyUp at it 4168 } 4169 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4170 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4171 return false; 4172 } 4173 // no move if we're still waiting on SWITCH_TO_CLICK timeout 4174 if (mTouchMode == TOUCH_DOUBLECLICK_MODE) { 4175 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent 2 click quit"); 4176 return true; 4177 } 4178 if (mTrackballDown) { 4179 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4180 return true; // discard move if trackball is down 4181 } 4182 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4183 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4184 return true; 4185 } 4186 // TODO: alternatively we can do panning as touch does 4187 switchOutDrawHistory(); 4188 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4189 if (DebugFlags.WEB_VIEW) { 4190 Log.v(LOGTAG, "onTrackballEvent time=" 4191 + time + " last=" + mTrackballLastTime); 4192 } 4193 mTrackballFirstTime = time; 4194 mTrackballXMove = mTrackballYMove = 0; 4195 } 4196 mTrackballLastTime = time; 4197 if (DebugFlags.WEB_VIEW) { 4198 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4199 } 4200 mTrackballRemainsX += ev.getX(); 4201 mTrackballRemainsY += ev.getY(); 4202 doTrackball(time); 4203 return true; 4204 } 4205 4206 void moveSelection(float xRate, float yRate) { 4207 if (mNativeClass == 0) 4208 return; 4209 int width = getViewWidth(); 4210 int height = getViewHeight(); 4211 mSelectX += scaleTrackballX(xRate, width); 4212 mSelectY += scaleTrackballY(yRate, height); 4213 int maxX = width + mScrollX; 4214 int maxY = height + mScrollY; 4215 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4216 , mSelectX)); 4217 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4218 , mSelectY)); 4219 if (DebugFlags.WEB_VIEW) { 4220 Log.v(LOGTAG, "moveSelection" 4221 + " mSelectX=" + mSelectX 4222 + " mSelectY=" + mSelectY 4223 + " mScrollX=" + mScrollX 4224 + " mScrollY=" + mScrollY 4225 + " xRate=" + xRate 4226 + " yRate=" + yRate 4227 ); 4228 } 4229 nativeMoveSelection(viewToContent(mSelectX) 4230 , viewToContent(mSelectY), mExtendSelection); 4231 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4232 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4233 : 0; 4234 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4235 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4236 : 0; 4237 pinScrollBy(scrollX, scrollY, true, 0); 4238 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4239 requestRectangleOnScreen(select); 4240 invalidate(); 4241 } 4242 4243 private int scaleTrackballX(float xRate, int width) { 4244 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4245 int nextXMove = xMove; 4246 if (xMove > 0) { 4247 if (xMove > mTrackballXMove) { 4248 xMove -= mTrackballXMove; 4249 } 4250 } else if (xMove < mTrackballXMove) { 4251 xMove -= mTrackballXMove; 4252 } 4253 mTrackballXMove = nextXMove; 4254 return xMove; 4255 } 4256 4257 private int scaleTrackballY(float yRate, int height) { 4258 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4259 int nextYMove = yMove; 4260 if (yMove > 0) { 4261 if (yMove > mTrackballYMove) { 4262 yMove -= mTrackballYMove; 4263 } 4264 } else if (yMove < mTrackballYMove) { 4265 yMove -= mTrackballYMove; 4266 } 4267 mTrackballYMove = nextYMove; 4268 return yMove; 4269 } 4270 4271 private int keyCodeToSoundsEffect(int keyCode) { 4272 switch(keyCode) { 4273 case KeyEvent.KEYCODE_DPAD_UP: 4274 return SoundEffectConstants.NAVIGATION_UP; 4275 case KeyEvent.KEYCODE_DPAD_RIGHT: 4276 return SoundEffectConstants.NAVIGATION_RIGHT; 4277 case KeyEvent.KEYCODE_DPAD_DOWN: 4278 return SoundEffectConstants.NAVIGATION_DOWN; 4279 case KeyEvent.KEYCODE_DPAD_LEFT: 4280 return SoundEffectConstants.NAVIGATION_LEFT; 4281 } 4282 throw new IllegalArgumentException("keyCode must be one of " + 4283 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4284 "KEYCODE_DPAD_LEFT}."); 4285 } 4286 4287 private void doTrackball(long time) { 4288 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4289 if (elapsed == 0) { 4290 elapsed = TRACKBALL_TIMEOUT; 4291 } 4292 float xRate = mTrackballRemainsX * 1000 / elapsed; 4293 float yRate = mTrackballRemainsY * 1000 / elapsed; 4294 if (mShiftIsPressed) { 4295 moveSelection(xRate, yRate); 4296 mTrackballRemainsX = mTrackballRemainsY = 0; 4297 return; 4298 } 4299 float ax = Math.abs(xRate); 4300 float ay = Math.abs(yRate); 4301 float maxA = Math.max(ax, ay); 4302 if (DebugFlags.WEB_VIEW) { 4303 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4304 + " xRate=" + xRate 4305 + " yRate=" + yRate 4306 + " mTrackballRemainsX=" + mTrackballRemainsX 4307 + " mTrackballRemainsY=" + mTrackballRemainsY); 4308 } 4309 int width = mContentWidth - getViewWidth(); 4310 int height = mContentHeight - getViewHeight(); 4311 if (width < 0) width = 0; 4312 if (height < 0) height = 0; 4313 if (mTouchMode == SCROLL_ZOOM_OUT) { 4314 int oldX = mZoomScrollX; 4315 int oldY = mZoomScrollY; 4316 int maxWH = Math.max(width, height); 4317 mZoomScrollX += scaleTrackballX(xRate, maxWH); 4318 mZoomScrollY += scaleTrackballY(yRate, maxWH); 4319 if (DebugFlags.WEB_VIEW) { 4320 Log.v(LOGTAG, "doTrackball SCROLL_ZOOM_OUT" 4321 + " mZoomScrollX=" + mZoomScrollX 4322 + " mZoomScrollY=" + mZoomScrollY); 4323 } 4324 mZoomScrollX = Math.min(width, Math.max(0, mZoomScrollX)); 4325 mZoomScrollY = Math.min(height, Math.max(0, mZoomScrollY)); 4326 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 4327 invalidate(); 4328 } 4329 mTrackballRemainsX = mTrackballRemainsY = 0; 4330 return; 4331 } 4332 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4333 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4334 maxA = Math.max(ax, ay); 4335 int count = Math.max(0, (int) maxA); 4336 int oldScrollX = mScrollX; 4337 int oldScrollY = mScrollY; 4338 if (count > 0) { 4339 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4340 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4341 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4342 KeyEvent.KEYCODE_DPAD_RIGHT; 4343 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4344 if (DebugFlags.WEB_VIEW) { 4345 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4346 + " count=" + count 4347 + " mTrackballRemainsX=" + mTrackballRemainsX 4348 + " mTrackballRemainsY=" + mTrackballRemainsY); 4349 } 4350 if (navHandledKey(selectKeyCode, count, false, time, false)) { 4351 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4352 } 4353 mTrackballRemainsX = mTrackballRemainsY = 0; 4354 } 4355 if (count >= TRACKBALL_SCROLL_COUNT) { 4356 int xMove = scaleTrackballX(xRate, width); 4357 int yMove = scaleTrackballY(yRate, height); 4358 if (DebugFlags.WEB_VIEW) { 4359 Log.v(LOGTAG, "doTrackball pinScrollBy" 4360 + " count=" + count 4361 + " xMove=" + xMove + " yMove=" + yMove 4362 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4363 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4364 ); 4365 } 4366 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4367 xMove = 0; 4368 } 4369 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4370 yMove = 0; 4371 } 4372 if (xMove != 0 || yMove != 0) { 4373 pinScrollBy(xMove, yMove, true, 0); 4374 } 4375 mUserScroll = true; 4376 } 4377 } 4378 4379 public void flingScroll(int vx, int vy) { 4380 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4381 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4382 4383 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 4384 invalidate(); 4385 } 4386 4387 private void doFling() { 4388 if (mVelocityTracker == null) { 4389 return; 4390 } 4391 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4392 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4393 4394 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 4395 int vx = (int) mVelocityTracker.getXVelocity(); 4396 int vy = (int) mVelocityTracker.getYVelocity(); 4397 4398 if (mSnapScrollMode != SNAP_NONE) { 4399 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_X_LOCK) { 4400 vy = 0; 4401 } else { 4402 vx = 0; 4403 } 4404 } 4405 4406 if (true /* EMG release: make our fling more like Maps' */) { 4407 // maps cuts their velocity in half 4408 vx = vx * 3 / 4; 4409 vy = vy * 3 / 4; 4410 } 4411 4412 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 4413 // TODO: duration is calculated based on velocity, if the range is 4414 // small, the animation will stop before duration is up. We may 4415 // want to calculate how long the animation is going to run to precisely 4416 // resume the webcore update. 4417 final int time = mScroller.getDuration(); 4418 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_UPDATE, time); 4419 invalidate(); 4420 } 4421 4422 private boolean zoomWithPreview(float scale) { 4423 float oldScale = mActualScale; 4424 mInitialScrollX = mScrollX; 4425 mInitialScrollY = mScrollY; 4426 4427 // snap to DEFAULT_SCALE if it is close 4428 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 4429 scale = mDefaultScale; 4430 } 4431 4432 setNewZoomScale(scale, false); 4433 4434 if (oldScale != mActualScale) { 4435 // use mZoomPickerScale to see zoom preview first 4436 mZoomStart = SystemClock.uptimeMillis(); 4437 mInvInitialZoomScale = 1.0f / oldScale; 4438 mInvFinalZoomScale = 1.0f / mActualScale; 4439 mZoomScale = mActualScale; 4440 if (!mInZoomOverview) { 4441 mLastScale = scale; 4442 } 4443 invalidate(); 4444 return true; 4445 } else { 4446 return false; 4447 } 4448 } 4449 4450 /** 4451 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 4452 * in charge of installing this view to the view hierarchy. This view will 4453 * become visible when the user starts scrolling via touch and fade away if 4454 * the user does not interact with it. 4455 * <p/> 4456 * API version 3 introduces a built-in zoom mechanism that is shown 4457 * automatically by the MapView. This is the preferred approach for 4458 * showing the zoom UI. 4459 * 4460 * @deprecated The built-in zoom mechanism is preferred, see 4461 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 4462 */ 4463 @Deprecated 4464 public View getZoomControls() { 4465 if (!getSettings().supportZoom()) { 4466 Log.w(LOGTAG, "This WebView doesn't support zoom."); 4467 return null; 4468 } 4469 if (mZoomControls == null) { 4470 mZoomControls = createZoomControls(); 4471 4472 /* 4473 * need to be set to VISIBLE first so that getMeasuredHeight() in 4474 * {@link #onSizeChanged()} can return the measured value for proper 4475 * layout. 4476 */ 4477 mZoomControls.setVisibility(View.VISIBLE); 4478 mZoomControlRunnable = new Runnable() { 4479 public void run() { 4480 4481 /* Don't dismiss the controls if the user has 4482 * focus on them. Wait and check again later. 4483 */ 4484 if (!mZoomControls.hasFocus()) { 4485 mZoomControls.hide(); 4486 } else { 4487 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4488 mPrivateHandler.postDelayed(mZoomControlRunnable, 4489 ZOOM_CONTROLS_TIMEOUT); 4490 } 4491 } 4492 }; 4493 } 4494 return mZoomControls; 4495 } 4496 4497 private ExtendedZoomControls createZoomControls() { 4498 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 4499 , null); 4500 zoomControls.setOnZoomInClickListener(new OnClickListener() { 4501 public void onClick(View v) { 4502 // reset time out 4503 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4504 mPrivateHandler.postDelayed(mZoomControlRunnable, 4505 ZOOM_CONTROLS_TIMEOUT); 4506 zoomIn(); 4507 } 4508 }); 4509 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 4510 public void onClick(View v) { 4511 // reset time out 4512 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4513 mPrivateHandler.postDelayed(mZoomControlRunnable, 4514 ZOOM_CONTROLS_TIMEOUT); 4515 zoomOut(); 4516 } 4517 }); 4518 zoomControls.setOnZoomMagnifyClickListener(new OnClickListener() { 4519 public void onClick(View v) { 4520 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4521 mPrivateHandler.postDelayed(mZoomControlRunnable, 4522 ZOOM_CONTROLS_TIMEOUT); 4523 zoomScrollOut(); 4524 } 4525 }); 4526 return zoomControls; 4527 } 4528 4529 /** 4530 * Gets the {@link ZoomButtonsController} which can be used to add 4531 * additional buttons to the zoom controls window. 4532 * 4533 * @return The instance of {@link ZoomButtonsController} used by this class, 4534 * or null if it is unavailable. 4535 * @hide 4536 */ 4537 public ZoomButtonsController getZoomButtonsController() { 4538 return mZoomButtonsController; 4539 } 4540 4541 /** 4542 * Perform zoom in in the webview 4543 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 4544 */ 4545 public boolean zoomIn() { 4546 // TODO: alternatively we can disallow this during draw history mode 4547 switchOutDrawHistory(); 4548 // Center zooming to the center of the screen. 4549 mZoomCenterX = getViewWidth() * .5f; 4550 mZoomCenterY = getViewHeight() * .5f; 4551 return zoomWithPreview(mActualScale * 1.25f); 4552 } 4553 4554 /** 4555 * Perform zoom out in the webview 4556 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 4557 */ 4558 public boolean zoomOut() { 4559 // TODO: alternatively we can disallow this during draw history mode 4560 switchOutDrawHistory(); 4561 float scale = mActualScale * 0.8f; 4562 if (scale < (mMinZoomScale + 0.1f) && WebView.ENABLE_DOUBLETAP_ZOOM 4563 && mWebViewCore.getSettings().getUseWideViewPort()) { 4564 // when zoom out to min scale, switch to overview mode 4565 doDoubleTap(); 4566 return true; 4567 } else { 4568 // Center zooming to the center of the screen. 4569 mZoomCenterX = getViewWidth() * .5f; 4570 mZoomCenterY = getViewHeight() * .5f; 4571 return zoomWithPreview(scale); 4572 } 4573 } 4574 4575 private void updateSelection() { 4576 if (mNativeClass == 0) { 4577 return; 4578 } 4579 // mLastTouchX and mLastTouchY are the point in the current viewport 4580 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4581 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4582 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 4583 contentX + mNavSlop, contentY + mNavSlop); 4584 nativeSelectBestAt(rect); 4585 } 4586 4587 /** 4588 * Scroll the focused text field/area to match the WebTextView 4589 * @param x New x position of the WebTextView in view coordinates 4590 * @param y New y position of the WebTextView in view coordinates 4591 */ 4592 /*package*/ void scrollFocusedTextInput(int x, int y) { 4593 if (!inEditingMode() || mWebViewCore == null) { 4594 return; 4595 } 4596 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, viewToContent(x), 4597 viewToContent(y)); 4598 } 4599 4600 /** 4601 * Set our starting point and time for a drag from the WebTextView. 4602 */ 4603 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 4604 if (!inEditingMode()) { 4605 return; 4606 } 4607 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 4608 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 4609 mLastTouchTime = eventTime; 4610 if (!mScroller.isFinished()) { 4611 mScroller.abortAnimation(); 4612 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 4613 } 4614 mSnapScrollMode = SNAP_NONE; 4615 mVelocityTracker = VelocityTracker.obtain(); 4616 mTouchMode = TOUCH_DRAG_START_MODE; 4617 } 4618 4619 /** 4620 * Given a motion event from the WebTextView, set its location to our 4621 * coordinates, and handle the event. 4622 */ 4623 /*package*/ boolean textFieldDrag(MotionEvent event) { 4624 if (!inEditingMode()) { 4625 return false; 4626 } 4627 mDragFromTextInput = true; 4628 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 4629 (float) (mWebTextView.getTop() - mScrollY)); 4630 boolean result = onTouchEvent(event); 4631 mDragFromTextInput = false; 4632 return result; 4633 } 4634 4635 /*package*/ void shortPressOnTextField() { 4636 if (inEditingMode()) { 4637 View v = mWebTextView; 4638 int x = viewToContent((v.getLeft() + v.getRight()) >> 1); 4639 int y = viewToContent((v.getTop() + v.getBottom()) >> 1); 4640 nativeMotionUp(x, y, mNavSlop); 4641 } 4642 } 4643 4644 private void doShortPress() { 4645 if (mNativeClass == 0) { 4646 return; 4647 } 4648 switchOutDrawHistory(); 4649 // mLastTouchX and mLastTouchY are the point in the current viewport 4650 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4651 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4652 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 4653 if (mLogEvent) { 4654 Checkin.updateStats(mContext.getContentResolver(), 4655 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 4656 } 4657 } 4658 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 4659 playSoundEffect(SoundEffectConstants.CLICK); 4660 } 4661 } 4662 4663 private void doDoubleTap() { 4664 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 4665 return; 4666 } 4667 mZoomCenterX = mLastTouchX; 4668 mZoomCenterY = mLastTouchY; 4669 mInZoomOverview = !mInZoomOverview; 4670 if (mInZoomOverview) { 4671 if (getSettings().getBuiltInZoomControls()) { 4672 if (mZoomButtonsController.isVisible()) { 4673 mZoomButtonsController.setVisible(false); 4674 } 4675 } else { 4676 if (mZoomControlRunnable != null) { 4677 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4678 } 4679 if (mZoomControls != null) { 4680 mZoomControls.hide(); 4681 } 4682 } 4683 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth); 4684 } else { 4685 // mLastTouchX and mLastTouchY are the point in the current viewport 4686 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4687 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4688 int left = nativeGetBlockLeftEdge(contentX, contentY, mActualScale); 4689 if (left != NO_LEFTEDGE) { 4690 // add a 5pt padding to the left edge. Re-calculate the zoom 4691 // center so that the new scroll x will be on the left edge. 4692 mZoomCenterX = left < 5 ? 0 : (left - 5) * mLastScale 4693 * mActualScale / (mLastScale - mActualScale); 4694 } 4695 zoomWithPreview(mLastScale); 4696 } 4697 } 4698 4699 // Called by JNI to handle a touch on a node representing an email address, 4700 // address, or phone number 4701 private void overrideLoading(String url) { 4702 mCallbackProxy.uiOverrideUrlLoading(url); 4703 } 4704 4705 // called by JNI 4706 private void sendPluginState(int state) { 4707 WebViewCore.PluginStateData psd = new WebViewCore.PluginStateData(); 4708 psd.mFrame = nativeCursorFramePointer(); 4709 psd.mNode = nativeCursorNodePointer(); 4710 psd.mState = state; 4711 mWebViewCore.sendMessage(EventHub.PLUGIN_STATE, psd); 4712 } 4713 4714 @Override 4715 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 4716 boolean result = false; 4717 if (inEditingMode()) { 4718 result = mWebTextView.requestFocus(direction, 4719 previouslyFocusedRect); 4720 } else { 4721 result = super.requestFocus(direction, previouslyFocusedRect); 4722 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 4723 // For cases such as GMail, where we gain focus from a direction, 4724 // we want to move to the first available link. 4725 // FIXME: If there are no visible links, we may not want to 4726 int fakeKeyDirection = 0; 4727 switch(direction) { 4728 case View.FOCUS_UP: 4729 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 4730 break; 4731 case View.FOCUS_DOWN: 4732 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 4733 break; 4734 case View.FOCUS_LEFT: 4735 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 4736 break; 4737 case View.FOCUS_RIGHT: 4738 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 4739 break; 4740 default: 4741 return result; 4742 } 4743 if (mNativeClass != 0 && !nativeHasCursorNode()) { 4744 navHandledKey(fakeKeyDirection, 1, true, 0, true); 4745 } 4746 } 4747 } 4748 return result; 4749 } 4750 4751 @Override 4752 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4753 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 4754 4755 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 4756 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 4757 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 4758 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 4759 4760 int measuredHeight = heightSize; 4761 int measuredWidth = widthSize; 4762 4763 // Grab the content size from WebViewCore. 4764 int contentHeight = mContentHeight; 4765 int contentWidth = mContentWidth; 4766 4767// Log.d(LOGTAG, "------- measure " + heightMode); 4768 4769 if (heightMode != MeasureSpec.EXACTLY) { 4770 mHeightCanMeasure = true; 4771 measuredHeight = contentHeight; 4772 if (heightMode == MeasureSpec.AT_MOST) { 4773 // If we are larger than the AT_MOST height, then our height can 4774 // no longer be measured and we should scroll internally. 4775 if (measuredHeight > heightSize) { 4776 measuredHeight = heightSize; 4777 mHeightCanMeasure = false; 4778 } 4779 } 4780 } else { 4781 mHeightCanMeasure = false; 4782 } 4783 if (mNativeClass != 0) { 4784 nativeSetHeightCanMeasure(mHeightCanMeasure); 4785 } 4786 // For the width, always use the given size unless unspecified. 4787 if (widthMode == MeasureSpec.UNSPECIFIED) { 4788 mWidthCanMeasure = true; 4789 measuredWidth = contentWidth; 4790 } else { 4791 mWidthCanMeasure = false; 4792 } 4793 4794 synchronized (this) { 4795 setMeasuredDimension(measuredWidth, measuredHeight); 4796 } 4797 } 4798 4799 @Override 4800 public boolean requestChildRectangleOnScreen(View child, 4801 Rect rect, 4802 boolean immediate) { 4803 rect.offset(child.getLeft() - child.getScrollX(), 4804 child.getTop() - child.getScrollY()); 4805 4806 int height = getHeight() - getHorizontalScrollbarHeight(); 4807 int screenTop = mScrollY; 4808 int screenBottom = screenTop + height; 4809 4810 int scrollYDelta = 0; 4811 4812 if (rect.bottom > screenBottom) { 4813 int oneThirdOfScreenHeight = height / 3; 4814 if (rect.height() > 2 * oneThirdOfScreenHeight) { 4815 // If the rectangle is too tall to fit in the bottom two thirds 4816 // of the screen, place it at the top. 4817 scrollYDelta = rect.top - screenTop; 4818 } else { 4819 // If the rectangle will still fit on screen, we want its 4820 // top to be in the top third of the screen. 4821 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 4822 } 4823 } else if (rect.top < screenTop) { 4824 scrollYDelta = rect.top - screenTop; 4825 } 4826 4827 int width = getWidth() - getVerticalScrollbarWidth(); 4828 int screenLeft = mScrollX; 4829 int screenRight = screenLeft + width; 4830 4831 int scrollXDelta = 0; 4832 4833 if (rect.right > screenRight && rect.left > screenLeft) { 4834 if (rect.width() > width) { 4835 scrollXDelta += (rect.left - screenLeft); 4836 } else { 4837 scrollXDelta += (rect.right - screenRight); 4838 } 4839 } else if (rect.left < screenLeft) { 4840 scrollXDelta -= (screenLeft - rect.left); 4841 } 4842 4843 if ((scrollYDelta | scrollXDelta) != 0) { 4844 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 4845 } 4846 4847 return false; 4848 } 4849 4850 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 4851 String replace, int newStart, int newEnd) { 4852 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 4853 arg.mReplace = replace; 4854 arg.mNewStart = newStart; 4855 arg.mNewEnd = newEnd; 4856 mTextGeneration++; 4857 arg.mTextGeneration = mTextGeneration; 4858 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 4859 } 4860 4861 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 4862 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 4863 mWebViewCore.sendMessage(EventHub.CLICK); 4864 } 4865 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 4866 arg.mEvent = event; 4867 arg.mCurrentText = currentText; 4868 // Increase our text generation number, and pass it to webcore thread 4869 mTextGeneration++; 4870 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 4871 // WebKit's document state is not saved until about to leave the page. 4872 // To make sure the host application, like Browser, has the up to date 4873 // document state when it goes to background, we force to save the 4874 // document state. 4875 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 4876 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 4877 cursorData(), 1000); 4878 } 4879 4880 /* package */ WebViewCore getWebViewCore() { 4881 return mWebViewCore; 4882 } 4883 4884 //------------------------------------------------------------------------- 4885 // Methods can be called from a separate thread, like WebViewCore 4886 // If it needs to call the View system, it has to send message. 4887 //------------------------------------------------------------------------- 4888 4889 /** 4890 * General handler to receive message coming from webkit thread 4891 */ 4892 class PrivateHandler extends Handler { 4893 @Override 4894 public void handleMessage(Message msg) { 4895 if (DebugFlags.WEB_VIEW) { 4896 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 4897 > INVAL_RECT_MSG_ID ? Integer.toString(msg.what) 4898 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 4899 } 4900 switch (msg.what) { 4901 case REMEMBER_PASSWORD: { 4902 mDatabase.setUsernamePassword( 4903 msg.getData().getString("host"), 4904 msg.getData().getString("username"), 4905 msg.getData().getString("password")); 4906 ((Message) msg.obj).sendToTarget(); 4907 break; 4908 } 4909 case NEVER_REMEMBER_PASSWORD: { 4910 mDatabase.setUsernamePassword( 4911 msg.getData().getString("host"), null, null); 4912 ((Message) msg.obj).sendToTarget(); 4913 break; 4914 } 4915 case SWITCH_TO_SHORTPRESS: { 4916 if (mTouchMode == TOUCH_INIT_MODE) { 4917 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 4918 updateSelection(); 4919 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4920 mTouchMode = TOUCH_DONE_MODE; 4921 } 4922 break; 4923 } 4924 case SWITCH_TO_LONGPRESS: { 4925 if (!mPreventDrag) { 4926 mTouchMode = TOUCH_DONE_MODE; 4927 performLongClick(); 4928 rebuildWebTextView(); 4929 } 4930 break; 4931 } 4932 case RELEASE_SINGLE_TAP: { 4933 if (!mPreventDrag) { 4934 mTouchMode = TOUCH_DONE_MODE; 4935 doShortPress(); 4936 } 4937 break; 4938 } 4939 case SWITCH_TO_CLICK: 4940 // The user clicked with the trackball, and did not click a 4941 // second time, so perform the action of a trackball single 4942 // click 4943 mTouchMode = TOUCH_DONE_MODE; 4944 Rect visibleRect = sendOurVisibleRect(); 4945 // Note that sendOurVisibleRect calls viewToContent, so the 4946 // coordinates should be in content coordinates. 4947 if (!nativeCursorIntersects(visibleRect)) { 4948 break; 4949 } 4950 nativeSetFollowedLink(true); 4951 nativeUpdatePluginReceivesEvents(); 4952 WebViewCore.CursorData data = cursorData(); 4953 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4954 playSoundEffect(SoundEffectConstants.CLICK); 4955 boolean isTextInput = nativeCursorIsTextInput(); 4956 if (isTextInput || !mCallbackProxy.uiOverrideUrlLoading( 4957 nativeCursorText())) { 4958 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4959 nativeCursorNodePointer()); 4960 } 4961 if (isTextInput) { 4962 rebuildWebTextView(); 4963 } 4964 break; 4965 case SCROLL_BY_MSG_ID: 4966 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 4967 break; 4968 case SYNC_SCROLL_TO_MSG_ID: 4969 if (mUserScroll) { 4970 // if user has scrolled explicitly, don't sync the 4971 // scroll position any more 4972 mUserScroll = false; 4973 break; 4974 } 4975 // fall through 4976 case SCROLL_TO_MSG_ID: 4977 if (setContentScrollTo(msg.arg1, msg.arg2)) { 4978 // if we can't scroll to the exact position due to pin, 4979 // send a message to WebCore to re-scroll when we get a 4980 // new picture 4981 mUserScroll = false; 4982 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 4983 msg.arg1, msg.arg2); 4984 } 4985 break; 4986 case SPAWN_SCROLL_TO_MSG_ID: 4987 spawnContentScrollTo(msg.arg1, msg.arg2); 4988 break; 4989 case NEW_PICTURE_MSG_ID: { 4990 WebSettings settings = mWebViewCore.getSettings(); 4991 // called for new content 4992 final int viewWidth = getViewWidth(); 4993 final WebViewCore.DrawData draw = 4994 (WebViewCore.DrawData) msg.obj; 4995 final Point viewSize = draw.mViewPoint; 4996 boolean useWideViewport = settings.getUseWideViewPort(); 4997 WebViewCore.RestoreState restoreState = draw.mRestoreState; 4998 if (restoreState != null) { 4999 mInZoomOverview = false; 5000 mLastScale = restoreState.mTextWrapScale; 5001 if (restoreState.mMinScale == 0) { 5002 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 5003 mMinZoomScaleFixed = false; 5004 } else { 5005 mMinZoomScale = restoreState.mMinScale; 5006 mMinZoomScaleFixed = true; 5007 } 5008 if (restoreState.mMaxScale == 0) { 5009 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 5010 } else { 5011 mMaxZoomScale = restoreState.mMaxScale; 5012 } 5013 if (useWideViewport && restoreState.mViewScale == 0) { 5014 mInZoomOverview = ENABLE_DOUBLETAP_ZOOM 5015 && settings.getLoadWithOverviewMode(); 5016 } 5017 setNewZoomScale(mLastScale, false); 5018 setContentScrollTo(restoreState.mScrollX, 5019 restoreState.mScrollY); 5020 // As we are on a new page, remove the WebTextView. This 5021 // is necessary for page loads driven by webkit, and in 5022 // particular when the user was on a password field, so 5023 // the WebTextView was visible. 5024 clearTextEntry(); 5025 } 5026 // We update the layout (i.e. request a layout from the 5027 // view system) if the last view size that we sent to 5028 // WebCore matches the view size of the picture we just 5029 // received in the fixed dimension. 5030 final boolean updateLayout = viewSize.x == mLastWidthSent 5031 && viewSize.y == mLastHeightSent; 5032 recordNewContentSize(draw.mWidthHeight.x, 5033 draw.mWidthHeight.y, updateLayout); 5034 if (DebugFlags.WEB_VIEW) { 5035 Rect b = draw.mInvalRegion.getBounds(); 5036 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5037 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5038 } 5039 invalidate(contentToView(draw.mInvalRegion.getBounds())); 5040 if (mPictureListener != null) { 5041 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5042 } 5043 if (useWideViewport) { 5044 mZoomOverviewWidth = Math.max(draw.mMinPrefWidth, 5045 draw.mViewPoint.x); 5046 } 5047 if (!mMinZoomScaleFixed) { 5048 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5049 } 5050 if (!mDrawHistory && mInZoomOverview) { 5051 // fit the content width to the current view. Ignore 5052 // the rounding error case. 5053 if (Math.abs((viewWidth * mInvActualScale) 5054 - mZoomOverviewWidth) > 1) { 5055 setNewZoomScale((float) viewWidth 5056 / mZoomOverviewWidth, false); 5057 } 5058 } 5059 break; 5060 } 5061 case WEBCORE_INITIALIZED_MSG_ID: 5062 // nativeCreate sets mNativeClass to a non-zero value 5063 nativeCreate(msg.arg1); 5064 break; 5065 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5066 // Make sure that the textfield is currently focused 5067 // and representing the same node as the pointer. 5068 if (inEditingMode() && 5069 mWebTextView.isSameTextField(msg.arg1)) { 5070 if (msg.getData().getBoolean("password")) { 5071 Spannable text = (Spannable) mWebTextView.getText(); 5072 int start = Selection.getSelectionStart(text); 5073 int end = Selection.getSelectionEnd(text); 5074 mWebTextView.setInPassword(true); 5075 // Restore the selection, which may have been 5076 // ruined by setInPassword. 5077 Spannable pword = 5078 (Spannable) mWebTextView.getText(); 5079 Selection.setSelection(pword, start, end); 5080 // If the text entry has created more events, ignore 5081 // this one. 5082 } else if (msg.arg2 == mTextGeneration) { 5083 mWebTextView.setTextAndKeepSelection( 5084 (String) msg.obj); 5085 } 5086 } 5087 break; 5088 case MOVE_OUT_OF_PLUGIN: 5089 if (nativePluginEatsNavKey()) { 5090 navHandledKey(msg.arg1, 1, false, 0, true); 5091 } 5092 break; 5093 case UPDATE_TEXT_ENTRY_MSG_ID: 5094 // this is sent after finishing resize in WebViewCore. Make 5095 // sure the text edit box is still on the screen. 5096 if (inEditingMode() && nativeCursorIsTextInput()) { 5097 mWebTextView.bringIntoView(); 5098 rebuildWebTextView(); 5099 } 5100 break; 5101 case CLEAR_TEXT_ENTRY: 5102 clearTextEntry(); 5103 break; 5104 case INVAL_RECT_MSG_ID: { 5105 Rect r = (Rect)msg.obj; 5106 if (r == null) { 5107 invalidate(); 5108 } else { 5109 // we need to scale r from content into view coords, 5110 // which viewInvalidate() does for us 5111 viewInvalidate(r.left, r.top, r.right, r.bottom); 5112 } 5113 break; 5114 } 5115 case REQUEST_FORM_DATA: 5116 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5117 if (mWebTextView.isSameTextField(msg.arg1)) { 5118 mWebTextView.setAdapterCustom(adapter); 5119 } 5120 break; 5121 case UPDATE_CLIPBOARD: 5122 String str = (String) msg.obj; 5123 if (DebugFlags.WEB_VIEW) { 5124 Log.v(LOGTAG, "UPDATE_CLIPBOARD " + str); 5125 } 5126 try { 5127 IClipboard clip = IClipboard.Stub.asInterface( 5128 ServiceManager.getService("clipboard")); 5129 clip.setClipboardText(str); 5130 } catch (android.os.RemoteException e) { 5131 Log.e(LOGTAG, "Clipboard failed", e); 5132 } 5133 break; 5134 case RESUME_WEBCORE_UPDATE: 5135 WebViewCore.resumeUpdate(mWebViewCore); 5136 break; 5137 5138 case LONG_PRESS_CENTER: 5139 // as this is shared by keydown and trackballdown, reset all 5140 // the states 5141 mGotCenterDown = false; 5142 mTrackballDown = false; 5143 // LONG_PRESS_CENTER is sent as a delayed message. If we 5144 // switch to windows overview, the WebView will be 5145 // temporarily removed from the view system. In that case, 5146 // do nothing. 5147 if (getParent() != null) { 5148 performLongClick(); 5149 } 5150 break; 5151 5152 case WEBCORE_NEED_TOUCH_EVENTS: 5153 mForwardTouchEvents = (msg.arg1 != 0); 5154 break; 5155 5156 case PREVENT_TOUCH_ID: 5157 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5158 mPreventDrag = msg.arg2 == 1; 5159 if (mPreventDrag) { 5160 mTouchMode = TOUCH_DONE_MODE; 5161 } 5162 } 5163 break; 5164 5165 case REQUEST_KEYBOARD: 5166 if (msg.arg1 == 0) { 5167 hideSoftKeyboard(); 5168 } else { 5169 displaySoftKeyboard(false); 5170 } 5171 break; 5172 5173 default: 5174 super.handleMessage(msg); 5175 break; 5176 } 5177 } 5178 } 5179 5180 // Class used to use a dropdown for a <select> element 5181 private class InvokeListBox implements Runnable { 5182 // Whether the listbox allows multiple selection. 5183 private boolean mMultiple; 5184 // Passed in to a list with multiple selection to tell 5185 // which items are selected. 5186 private int[] mSelectedArray; 5187 // Passed in to a list with single selection to tell 5188 // where the initial selection is. 5189 private int mSelection; 5190 5191 private Container[] mContainers; 5192 5193 // Need these to provide stable ids to my ArrayAdapter, 5194 // which normally does not have stable ids. (Bug 1250098) 5195 private class Container extends Object { 5196 String mString; 5197 boolean mEnabled; 5198 int mId; 5199 5200 public String toString() { 5201 return mString; 5202 } 5203 } 5204 5205 /** 5206 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 5207 * and allow filtering. 5208 */ 5209 private class MyArrayListAdapter extends ArrayAdapter<Container> { 5210 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 5211 super(context, 5212 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 5213 com.android.internal.R.layout.select_dialog_singlechoice, 5214 objects); 5215 } 5216 5217 @Override 5218 public boolean hasStableIds() { 5219 // AdapterView's onChanged method uses this to determine whether 5220 // to restore the old state. Return false so that the old (out 5221 // of date) state does not replace the new, valid state. 5222 return false; 5223 } 5224 5225 private Container item(int position) { 5226 if (position < 0 || position >= getCount()) { 5227 return null; 5228 } 5229 return (Container) getItem(position); 5230 } 5231 5232 @Override 5233 public long getItemId(int position) { 5234 Container item = item(position); 5235 if (item == null) { 5236 return -1; 5237 } 5238 return item.mId; 5239 } 5240 5241 @Override 5242 public boolean areAllItemsEnabled() { 5243 return false; 5244 } 5245 5246 @Override 5247 public boolean isEnabled(int position) { 5248 Container item = item(position); 5249 if (item == null) { 5250 return false; 5251 } 5252 return item.mEnabled; 5253 } 5254 } 5255 5256 private InvokeListBox(String[] array, 5257 boolean[] enabled, int[] selected) { 5258 mMultiple = true; 5259 mSelectedArray = selected; 5260 5261 int length = array.length; 5262 mContainers = new Container[length]; 5263 for (int i = 0; i < length; i++) { 5264 mContainers[i] = new Container(); 5265 mContainers[i].mString = array[i]; 5266 mContainers[i].mEnabled = enabled[i]; 5267 mContainers[i].mId = i; 5268 } 5269 } 5270 5271 private InvokeListBox(String[] array, boolean[] enabled, int 5272 selection) { 5273 mSelection = selection; 5274 mMultiple = false; 5275 5276 int length = array.length; 5277 mContainers = new Container[length]; 5278 for (int i = 0; i < length; i++) { 5279 mContainers[i] = new Container(); 5280 mContainers[i].mString = array[i]; 5281 mContainers[i].mEnabled = enabled[i]; 5282 mContainers[i].mId = i; 5283 } 5284 } 5285 5286 /* 5287 * Whenever the data set changes due to filtering, this class ensures 5288 * that the checked item remains checked. 5289 */ 5290 private class SingleDataSetObserver extends DataSetObserver { 5291 private long mCheckedId; 5292 private ListView mListView; 5293 private Adapter mAdapter; 5294 5295 /* 5296 * Create a new observer. 5297 * @param id The ID of the item to keep checked. 5298 * @param l ListView for getting and clearing the checked states 5299 * @param a Adapter for getting the IDs 5300 */ 5301 public SingleDataSetObserver(long id, ListView l, Adapter a) { 5302 mCheckedId = id; 5303 mListView = l; 5304 mAdapter = a; 5305 } 5306 5307 public void onChanged() { 5308 // The filter may have changed which item is checked. Find the 5309 // item that the ListView thinks is checked. 5310 int position = mListView.getCheckedItemPosition(); 5311 long id = mAdapter.getItemId(position); 5312 if (mCheckedId != id) { 5313 // Clear the ListView's idea of the checked item, since 5314 // it is incorrect 5315 mListView.clearChoices(); 5316 // Search for mCheckedId. If it is in the filtered list, 5317 // mark it as checked 5318 int count = mAdapter.getCount(); 5319 for (int i = 0; i < count; i++) { 5320 if (mAdapter.getItemId(i) == mCheckedId) { 5321 mListView.setItemChecked(i, true); 5322 break; 5323 } 5324 } 5325 } 5326 } 5327 5328 public void onInvalidate() {} 5329 } 5330 5331 public void run() { 5332 final ListView listView = (ListView) LayoutInflater.from(mContext) 5333 .inflate(com.android.internal.R.layout.select_dialog, null); 5334 final MyArrayListAdapter adapter = new 5335 MyArrayListAdapter(mContext, mContainers, mMultiple); 5336 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 5337 .setView(listView).setCancelable(true) 5338 .setInverseBackgroundForced(true); 5339 5340 if (mMultiple) { 5341 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 5342 public void onClick(DialogInterface dialog, int which) { 5343 mWebViewCore.sendMessage( 5344 EventHub.LISTBOX_CHOICES, 5345 adapter.getCount(), 0, 5346 listView.getCheckedItemPositions()); 5347 }}); 5348 b.setNegativeButton(android.R.string.cancel, 5349 new DialogInterface.OnClickListener() { 5350 public void onClick(DialogInterface dialog, int which) { 5351 mWebViewCore.sendMessage( 5352 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5353 }}); 5354 } 5355 final AlertDialog dialog = b.create(); 5356 listView.setAdapter(adapter); 5357 listView.setFocusableInTouchMode(true); 5358 // There is a bug (1250103) where the checks in a ListView with 5359 // multiple items selected are associated with the positions, not 5360 // the ids, so the items do not properly retain their checks when 5361 // filtered. Do not allow filtering on multiple lists until 5362 // that bug is fixed. 5363 5364 listView.setTextFilterEnabled(!mMultiple); 5365 if (mMultiple) { 5366 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 5367 int length = mSelectedArray.length; 5368 for (int i = 0; i < length; i++) { 5369 listView.setItemChecked(mSelectedArray[i], true); 5370 } 5371 } else { 5372 listView.setOnItemClickListener(new OnItemClickListener() { 5373 public void onItemClick(AdapterView parent, View v, 5374 int position, long id) { 5375 mWebViewCore.sendMessage( 5376 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 5377 dialog.dismiss(); 5378 } 5379 }); 5380 if (mSelection != -1) { 5381 listView.setSelection(mSelection); 5382 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 5383 listView.setItemChecked(mSelection, true); 5384 DataSetObserver observer = new SingleDataSetObserver( 5385 adapter.getItemId(mSelection), listView, adapter); 5386 adapter.registerDataSetObserver(observer); 5387 } 5388 } 5389 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 5390 public void onCancel(DialogInterface dialog) { 5391 mWebViewCore.sendMessage( 5392 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5393 } 5394 }); 5395 dialog.show(); 5396 } 5397 } 5398 5399 /* 5400 * Request a dropdown menu for a listbox with multiple selection. 5401 * 5402 * @param array Labels for the listbox. 5403 * @param enabledArray Which positions are enabled. 5404 * @param selectedArray Which positions are initally selected. 5405 */ 5406 void requestListBox(String[] array, boolean[]enabledArray, int[] 5407 selectedArray) { 5408 mPrivateHandler.post( 5409 new InvokeListBox(array, enabledArray, selectedArray)); 5410 } 5411 5412 /* 5413 * Request a dropdown menu for a listbox with single selection or a single 5414 * <select> element. 5415 * 5416 * @param array Labels for the listbox. 5417 * @param enabledArray Which positions are enabled. 5418 * @param selection Which position is initally selected. 5419 */ 5420 void requestListBox(String[] array, boolean[]enabledArray, int selection) { 5421 mPrivateHandler.post( 5422 new InvokeListBox(array, enabledArray, selection)); 5423 } 5424 5425 // called by JNI 5426 private void sendMoveMouse(int frame, int node, int x, int y) { 5427 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 5428 new WebViewCore.CursorData(frame, node, x, y)); 5429 } 5430 5431 /* 5432 * Send a mouse move event to the webcore thread. 5433 * 5434 * @param removeFocus Pass true if the "mouse" cursor is now over a node 5435 * which wants key events, but it is not the focus. This 5436 * will make the visual appear as though nothing is in 5437 * focus. Remove the WebTextView, if present, and stop 5438 * drawing the blinking caret. 5439 * called by JNI 5440 */ 5441 private void sendMoveMouseIfLatest(boolean removeFocus) { 5442 if (removeFocus) { 5443 clearTextEntry(); 5444 setFocusControllerInactive(); 5445 } 5446 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 5447 cursorData()); 5448 } 5449 5450 // called by JNI 5451 private void sendMotionUp(int touchGeneration, 5452 int frame, int node, int x, int y, int size) { 5453 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5454 touchUpData.mMoveGeneration = touchGeneration; 5455 touchUpData.mSize = size; 5456 touchUpData.mFrame = frame; 5457 touchUpData.mNode = node; 5458 touchUpData.mX = x; 5459 touchUpData.mY = y; 5460 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5461 } 5462 5463 5464 private int getScaledMaxXScroll() { 5465 int width; 5466 if (mHeightCanMeasure == false) { 5467 width = getViewWidth() / 4; 5468 } else { 5469 Rect visRect = new Rect(); 5470 calcOurVisibleRect(visRect); 5471 width = visRect.width() / 2; 5472 } 5473 // FIXME the divisor should be retrieved from somewhere 5474 return viewToContent(width); 5475 } 5476 5477 private int getScaledMaxYScroll() { 5478 int height; 5479 if (mHeightCanMeasure == false) { 5480 height = getViewHeight() / 4; 5481 } else { 5482 Rect visRect = new Rect(); 5483 calcOurVisibleRect(visRect); 5484 height = visRect.height() / 2; 5485 } 5486 // FIXME the divisor should be retrieved from somewhere 5487 // the closest thing today is hard-coded into ScrollView.java 5488 // (from ScrollView.java, line 363) int maxJump = height/2; 5489 return viewToContent(height); 5490 } 5491 5492 /** 5493 * Called by JNI to invalidate view 5494 */ 5495 private void viewInvalidate() { 5496 invalidate(); 5497 } 5498 5499 // return true if the key was handled 5500 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 5501 long time, boolean ignorePlugin) { 5502 if (mNativeClass == 0) { 5503 return false; 5504 } 5505 if (ignorePlugin == false && nativePluginEatsNavKey()) { 5506 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 5507 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 5508 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 5509 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 5510 , 0, 0, 0); 5511 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5512 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5513 return true; 5514 } 5515 mLastCursorTime = time; 5516 mLastCursorBounds = nativeGetCursorRingBounds(); 5517 boolean keyHandled 5518 = nativeMoveCursor(keyCode, count, noScroll) == false; 5519 if (DebugFlags.WEB_VIEW) { 5520 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 5521 + " mLastCursorTime=" + mLastCursorTime 5522 + " handled=" + keyHandled); 5523 } 5524 if (keyHandled == false || mHeightCanMeasure == false) { 5525 return keyHandled; 5526 } 5527 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 5528 if (contentCursorRingBounds.isEmpty()) return keyHandled; 5529 Rect viewCursorRingBounds = contentToView(contentCursorRingBounds); 5530 Rect visRect = new Rect(); 5531 calcOurVisibleRect(visRect); 5532 Rect outset = new Rect(visRect); 5533 int maxXScroll = visRect.width() / 2; 5534 int maxYScroll = visRect.height() / 2; 5535 outset.inset(-maxXScroll, -maxYScroll); 5536 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 5537 return keyHandled; 5538 } 5539 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 5540 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 5541 maxXScroll); 5542 if (maxH > 0) { 5543 pinScrollBy(maxH, 0, true, 0); 5544 } else { 5545 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 5546 -maxXScroll); 5547 if (maxH < 0) { 5548 pinScrollBy(maxH, 0, true, 0); 5549 } 5550 } 5551 if (mLastCursorBounds.isEmpty()) return keyHandled; 5552 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 5553 return keyHandled; 5554 } 5555 if (DebugFlags.WEB_VIEW) { 5556 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 5557 + contentCursorRingBounds); 5558 } 5559 requestRectangleOnScreen(viewCursorRingBounds); 5560 mUserScroll = true; 5561 return keyHandled; 5562 } 5563 5564 /** 5565 * Set the background color. It's white by default. Pass 5566 * zero to make the view transparent. 5567 * @param color the ARGB color described by Color.java 5568 */ 5569 public void setBackgroundColor(int color) { 5570 mBackgroundColor = color; 5571 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 5572 } 5573 5574 public void debugDump() { 5575 nativeDebugDump(); 5576 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 5577 } 5578 5579 /** 5580 * Update our cache with updatedText. 5581 * @param updatedText The new text to put in our cache. 5582 */ 5583 /* package */ void updateCachedTextfield(String updatedText) { 5584 // Also place our generation number so that when we look at the cache 5585 // we recognize that it is up to date. 5586 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 5587 } 5588 5589 /* package */ native void nativeClearCursor(); 5590 private native void nativeCreate(int ptr); 5591 private native int nativeCursorFramePointer(); 5592 private native Rect nativeCursorNodeBounds(); 5593 /* package */ native int nativeCursorNodePointer(); 5594 /* package */ native boolean nativeCursorMatchesFocus(); 5595 private native boolean nativeCursorIntersects(Rect visibleRect); 5596 private native boolean nativeCursorIsAnchor(); 5597 private native boolean nativeCursorIsPlugin(); 5598 private native boolean nativeCursorIsTextInput(); 5599 private native Point nativeCursorPosition(); 5600 private native String nativeCursorText(); 5601 /** 5602 * Returns true if the native cursor node says it wants to handle key events 5603 * (ala plugins). This can only be called if mNativeClass is non-zero! 5604 */ 5605 private native boolean nativeCursorWantsKeyEvents(); 5606 private native void nativeDebugDump(); 5607 private native void nativeDestroy(); 5608 private native void nativeDrawCursorRing(Canvas content); 5609 private native void nativeDrawMatches(Canvas canvas); 5610 private native void nativeDrawSelection(Canvas content 5611 , int x, int y, boolean extendSelection); 5612 private native void nativeDrawSelectionRegion(Canvas content); 5613 private native void nativeDumpDisplayTree(String urlOrNull); 5614 private native int nativeFindAll(String findLower, String findUpper); 5615 private native void nativeFindNext(boolean forward); 5616 private native boolean nativeFocusCandidateIsPassword(); 5617 private native boolean nativeFocusCandidateIsRtlText(); 5618 private native boolean nativeFocusCandidateIsTextField(); 5619 private native boolean nativeFocusCandidateIsTextInput(); 5620 private native int nativeFocusCandidateMaxLength(); 5621 /* package */ native String nativeFocusCandidateName(); 5622 private native Rect nativeFocusCandidateNodeBounds(); 5623 /* package */ native int nativeFocusCandidatePointer(); 5624 private native String nativeFocusCandidateText(); 5625 private native int nativeFocusCandidateTextSize(); 5626 /* package */ native int nativeFocusNodePointer(); 5627 private native Rect nativeGetCursorRingBounds(); 5628 private native Region nativeGetSelection(); 5629 private native boolean nativeHasCursorNode(); 5630 private native boolean nativeHasFocusNode(); 5631 private native void nativeHideCursor(); 5632 private native String nativeImageURI(int x, int y); 5633 private native void nativeInstrumentReport(); 5634 /* package */ native void nativeMoveCursorToNextTextInput(); 5635 // return true if the page has been scrolled 5636 private native boolean nativeMotionUp(int x, int y, int slop); 5637 // returns false if it handled the key 5638 private native boolean nativeMoveCursor(int keyCode, int count, 5639 boolean noScroll); 5640 private native int nativeMoveGeneration(); 5641 private native void nativeMoveSelection(int x, int y, 5642 boolean extendSelection); 5643 private native boolean nativePluginEatsNavKey(); 5644 // Like many other of our native methods, you must make sure that 5645 // mNativeClass is not null before calling this method. 5646 private native void nativeRecordButtons(boolean focused, 5647 boolean pressed, boolean invalidate); 5648 private native void nativeSelectBestAt(Rect rect); 5649 private native void nativeSetFindIsDown(); 5650 private native void nativeSetFollowedLink(boolean followed); 5651 private native void nativeSetHeightCanMeasure(boolean measure); 5652 // Returns a value corresponding to CachedFrame::ImeAction 5653 /* package */ native int nativeTextFieldAction(); 5654 private native int nativeTextGeneration(); 5655 // Never call this version except by updateCachedTextfield(String) - 5656 // we always want to pass in our generation number. 5657 private native void nativeUpdateCachedTextfield(String updatedText, 5658 int generation); 5659 private native void nativeUpdatePluginReceivesEvents(); 5660 // return NO_LEFTEDGE means failure. 5661 private static final int NO_LEFTEDGE = -1; 5662 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 5663} 5664