WebView.java revision d3c6d54de9b9a599eb33f343fb1e0639fed02094
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.app.AlertDialog; 20import android.content.Context; 21import android.content.DialogInterface; 22import android.content.Intent; 23import android.content.DialogInterface.OnCancelListener; 24import android.database.DataSetObserver; 25import android.graphics.Bitmap; 26import android.graphics.Canvas; 27import android.graphics.Color; 28import android.graphics.Paint; 29import android.graphics.Path; 30import android.graphics.Picture; 31import android.graphics.Point; 32import android.graphics.Rect; 33import android.graphics.Region; 34import android.net.http.SslCertificate; 35import android.net.Uri; 36import android.os.Bundle; 37import android.os.Handler; 38import android.os.Message; 39import android.os.ServiceManager; 40import android.os.SystemClock; 41import android.provider.Checkin; 42import android.text.IClipboard; 43import android.text.Selection; 44import android.text.Spannable; 45import android.util.AttributeSet; 46import android.util.EventLog; 47import android.util.Log; 48import android.view.Gravity; 49import android.view.KeyEvent; 50import android.view.LayoutInflater; 51import android.view.MotionEvent; 52import android.view.SoundEffectConstants; 53import android.view.VelocityTracker; 54import android.view.View; 55import android.view.ViewConfiguration; 56import android.view.ViewGroup; 57import android.view.ViewParent; 58import android.view.ViewTreeObserver; 59import android.view.animation.AlphaAnimation; 60import android.view.inputmethod.InputMethodManager; 61import android.webkit.WebTextView.AutoCompleteAdapter; 62import android.webkit.WebViewCore.EventHub; 63import android.widget.AbsoluteLayout; 64import android.widget.Adapter; 65import android.widget.AdapterView; 66import android.widget.ArrayAdapter; 67import android.widget.FrameLayout; 68import android.widget.ImageView; 69import android.widget.ListView; 70import android.widget.Scroller; 71import android.widget.Toast; 72import android.widget.ZoomButtonsController; 73import android.widget.ZoomControls; 74import android.widget.AdapterView.OnItemClickListener; 75 76import java.io.File; 77import java.io.FileInputStream; 78import java.io.FileNotFoundException; 79import java.io.FileOutputStream; 80import java.io.IOException; 81import java.net.URLDecoder; 82import java.util.ArrayList; 83import java.util.List; 84 85/** 86 * <p>A View that displays web pages. This class is the basis upon which you 87 * can roll your own web browser or simply display some online content within your Activity. 88 * It uses the WebKit rendering engine to display 89 * web pages and includes methods to navigate forward and backward 90 * through a history, zoom in and out, perform text searches and more.</p> 91 * <p>To enable the built-in zoom, set 92 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 93 * (introduced in API version 3). 94 * <p>Note that, in order for your Activity to access the Internet and load web pages 95 * in a WebView, you must add the <var>INTERNET</var> permissions to your 96 * Android Manifest file:</p> 97 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 98 * 99 * <p>This must be a child of the <code><manifest></code> element.</p> 100 * 101 * <h3>Basic usage</h3> 102 * 103 * <p>By default, a WebView provides no browser-like widgets, does not 104 * enable JavaScript and errors will be ignored. If your goal is only 105 * to display some HTML as a part of your UI, this is probably fine; 106 * the user won't need to interact with the web page beyond reading 107 * it, and the web page won't need to interact with the user. If you 108 * actually want a fully blown web browser, then you probably want to 109 * invoke the Browser application with your URL rather than show it 110 * with a WebView. See {@link android.content.Intent} for more information.</p> 111 * 112 * <pre class="prettyprint"> 113 * WebView webview = new WebView(this); 114 * setContentView(webview); 115 * 116 * // Simplest usage: note that an exception will NOT be thrown 117 * // if there is an error loading this page (see below). 118 * webview.loadUrl("http://slashdot.org/"); 119 * 120 * // Of course you can also load from any string: 121 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 122 * webview.loadData(summary, "text/html", "utf-8"); 123 * // ... although note that there are restrictions on what this HTML can do. 124 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 125 * </pre> 126 * 127 * <p>A WebView has several customization points where you can add your 128 * own behavior. These are:</p> 129 * 130 * <ul> 131 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 132 * This class is called when something that might impact a 133 * browser UI happens, for instance, progress updates and 134 * JavaScript alerts are sent here. 135 * </li> 136 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 137 * It will be called when things happen that impact the 138 * rendering of the content, eg, errors or form submissions. You 139 * can also intercept URL loading here.</li> 140 * <li>Via the {@link android.webkit.WebSettings} class, which contains 141 * miscellaneous configuration. </li> 142 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 143 * This lets you bind Java objects into the WebView so they can be 144 * controlled from the web pages JavaScript.</li> 145 * </ul> 146 * 147 * <p>Here's a more complicated example, showing error handling, 148 * settings, and progress notification:</p> 149 * 150 * <pre class="prettyprint"> 151 * // Let's display the progress in the activity title bar, like the 152 * // browser app does. 153 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 154 * 155 * webview.getSettings().setJavaScriptEnabled(true); 156 * 157 * final Activity activity = this; 158 * webview.setWebChromeClient(new WebChromeClient() { 159 * public void onProgressChanged(WebView view, int progress) { 160 * // Activities and WebViews measure progress with different scales. 161 * // The progress meter will automatically disappear when we reach 100% 162 * activity.setProgress(progress * 1000); 163 * } 164 * }); 165 * webview.setWebViewClient(new WebViewClient() { 166 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 167 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 168 * } 169 * }); 170 * 171 * webview.loadUrl("http://slashdot.org/"); 172 * </pre> 173 * 174 * <h3>Cookie and window management</h3> 175 * 176 * <p>For obvious security reasons, your application has its own 177 * cache, cookie store etc - it does not share the Browser 178 * applications data. Cookies are managed on a separate thread, so 179 * operations like index building don't block the UI 180 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 181 * if you want to use cookies in your application. 182 * </p> 183 * 184 * <p>By default, requests by the HTML to open new windows are 185 * ignored. This is true whether they be opened by JavaScript or by 186 * the target attribute on a link. You can customize your 187 * WebChromeClient to provide your own behaviour for opening multiple windows, 188 * and render them in whatever manner you want.</p> 189 * 190 * <p>Standard behavior for an Activity is to be destroyed and 191 * recreated when the devices orientation is changed. This will cause 192 * the WebView to reload the current page. If you don't want that, you 193 * can set your Activity to handle the orientation and keyboardHidden 194 * changes, and then just leave the WebView alone. It'll automatically 195 * re-orient itself as appropriate.</p> 196 */ 197public class WebView extends AbsoluteLayout 198 implements ViewTreeObserver.OnGlobalFocusChangeListener, 199 ViewGroup.OnHierarchyChangeListener { 200 201 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 202 // the screen all-the-time. Good for profiling our drawing code 203 static private final boolean AUTO_REDRAW_HACK = false; 204 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 205 private boolean mAutoRedraw; 206 207 static final String LOGTAG = "webview"; 208 209 private static class ExtendedZoomControls extends FrameLayout { 210 public ExtendedZoomControls(Context context, AttributeSet attrs) { 211 super(context, attrs); 212 LayoutInflater inflater = (LayoutInflater) 213 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 214 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 215 mPlusMinusZoomControls = (ZoomControls) findViewById( 216 com.android.internal.R.id.zoomControls); 217 mZoomMagnify = (ImageView) findViewById(com.android.internal.R.id.zoomMagnify); 218 } 219 220 public void show(boolean showZoom, boolean canZoomOut) { 221 mPlusMinusZoomControls.setVisibility( 222 showZoom ? View.VISIBLE : View.GONE); 223 mZoomMagnify.setVisibility(canZoomOut ? View.VISIBLE : View.GONE); 224 fade(View.VISIBLE, 0.0f, 1.0f); 225 } 226 227 public void hide() { 228 fade(View.GONE, 1.0f, 0.0f); 229 } 230 231 private void fade(int visibility, float startAlpha, float endAlpha) { 232 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 233 anim.setDuration(500); 234 startAnimation(anim); 235 setVisibility(visibility); 236 } 237 238 public void setIsZoomMagnifyEnabled(boolean isEnabled) { 239 mZoomMagnify.setEnabled(isEnabled); 240 } 241 242 public boolean hasFocus() { 243 return mPlusMinusZoomControls.hasFocus() || mZoomMagnify.hasFocus(); 244 } 245 246 public void setOnZoomInClickListener(OnClickListener listener) { 247 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 248 } 249 250 public void setOnZoomOutClickListener(OnClickListener listener) { 251 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 252 } 253 254 public void setOnZoomMagnifyClickListener(OnClickListener listener) { 255 mZoomMagnify.setOnClickListener(listener); 256 } 257 258 ZoomControls mPlusMinusZoomControls; 259 ImageView mZoomMagnify; 260 } 261 262 /** 263 * Transportation object for returning WebView across thread boundaries. 264 */ 265 public class WebViewTransport { 266 private WebView mWebview; 267 268 /** 269 * Set the WebView to the transportation object. 270 * @param webview The WebView to transport. 271 */ 272 public synchronized void setWebView(WebView webview) { 273 mWebview = webview; 274 } 275 276 /** 277 * Return the WebView object. 278 * @return WebView The transported WebView object. 279 */ 280 public synchronized WebView getWebView() { 281 return mWebview; 282 } 283 } 284 285 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 286 private final CallbackProxy mCallbackProxy; 287 288 private final WebViewDatabase mDatabase; 289 290 // SSL certificate for the main top-level page (if secure) 291 private SslCertificate mCertificate; 292 293 // Native WebView pointer that is 0 until the native object has been 294 // created. 295 private int mNativeClass; 296 // This would be final but it needs to be set to null when the WebView is 297 // destroyed. 298 private WebViewCore mWebViewCore; 299 // Handler for dispatching UI messages. 300 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 301 private WebTextView mWebTextView; 302 // Used to ignore changes to webkit text that arrives to the UI side after 303 // more key events. 304 private int mTextGeneration; 305 306 // Used by WebViewCore to create child views. 307 /* package */ final ViewManager mViewManager; 308 309 // The list of loaded plugins. 310 private static PluginList sPluginList; 311 312 /** 313 * Position of the last touch event. 314 */ 315 private float mLastTouchX; 316 private float mLastTouchY; 317 318 /** 319 * Time of the last touch event. 320 */ 321 private long mLastTouchTime; 322 323 /** 324 * Time of the last time sending touch event to WebViewCore 325 */ 326 private long mLastSentTouchTime; 327 328 /** 329 * The minimum elapsed time before sending another ACTION_MOVE event to 330 * WebViewCore. This really should be tuned for each type of the devices. 331 * For example in Google Map api test case, it takes Dream device at least 332 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 333 * triggering the layout and drawing the picture. While the same process 334 * takes 60+ms on the current high speed device. If we make 335 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 336 * to WebViewCore queue and the real layout and draw events will be pushed 337 * to further, which slows down the refresh rate. Choose 50 to favor the 338 * current high speed devices. For Dream like devices, 100 is a better 339 * choice. Maybe make this in the buildspec later. 340 */ 341 private static final int TOUCH_SENT_INTERVAL = 50; 342 343 /** 344 * Helper class to get velocity for fling 345 */ 346 VelocityTracker mVelocityTracker; 347 private int mMaximumFling; 348 349 // use this flag to control whether enabling the new double tap zoom 350 static final boolean ENABLE_DOUBLETAP_ZOOM = true; 351 352 /** 353 * Touch mode 354 */ 355 private int mTouchMode = TOUCH_DONE_MODE; 356 private static final int TOUCH_INIT_MODE = 1; 357 private static final int TOUCH_DRAG_START_MODE = 2; 358 private static final int TOUCH_DRAG_MODE = 3; 359 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 360 private static final int TOUCH_SHORTPRESS_MODE = 5; 361 private static final int TOUCH_DOUBLECLICK_MODE = 6; 362 private static final int TOUCH_DONE_MODE = 7; 363 private static final int TOUCH_SELECT_MODE = 8; 364 // touch mode values specific to scale+scroll 365 private static final int FIRST_SCROLL_ZOOM = 9; 366 private static final int SCROLL_ZOOM_ANIMATION_IN = 9; 367 private static final int SCROLL_ZOOM_ANIMATION_OUT = 10; 368 private static final int SCROLL_ZOOM_OUT = 11; 369 private static final int LAST_SCROLL_ZOOM = 11; 370 // end of touch mode values specific to scale+scroll 371 private static final int TOUCH_DOUBLE_TAP_MODE = 12; 372 373 // Whether to forward the touch events to WebCore 374 private boolean mForwardTouchEvents = false; 375 376 // Whether to prevent drag during touch. The initial value depends on 377 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 378 // take control of touch events unless it says no for touch down event. 379 private boolean mPreventDrag; 380 381 // To keep track of whether the current drag was initiated by a WebTextView, 382 // so that we know not to hide the cursor 383 boolean mDragFromTextInput; 384 385 // Whether or not to draw the cursor ring. 386 private boolean mDrawCursorRing = true; 387 388 // true if onPause has been called (and not onResume) 389 private boolean mIsPaused; 390 391 /** 392 * Customizable constant 393 */ 394 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 395 private int mTouchSlopSquare; 396 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 397 private int mDoubleTapSlopSquare; 398 // pre-computed density adjusted navigation slop 399 private int mNavSlop; 400 // This should be ViewConfiguration.getTapTimeout() 401 // But system time out is 100ms, which is too short for the browser. 402 // In the browser, if it switches out of tap too soon, jump tap won't work. 403 private static final int TAP_TIMEOUT = 200; 404 // This should be ViewConfiguration.getLongPressTimeout() 405 // But system time out is 500ms, which is too short for the browser. 406 // With a short timeout, it's difficult to treat trigger a short press. 407 private static final int LONG_PRESS_TIMEOUT = 1000; 408 // needed to avoid flinging after a pause of no movement 409 private static final int MIN_FLING_TIME = 250; 410 // The time that the Zoom Controls are visible before fading away 411 private static final long ZOOM_CONTROLS_TIMEOUT = 412 ViewConfiguration.getZoomControlsTimeout(); 413 // The amount of content to overlap between two screens when going through 414 // pages with the space bar, in pixels. 415 private static final int PAGE_SCROLL_OVERLAP = 24; 416 417 /** 418 * These prevent calling requestLayout if either dimension is fixed. This 419 * depends on the layout parameters and the measure specs. 420 */ 421 boolean mWidthCanMeasure; 422 boolean mHeightCanMeasure; 423 424 // Remember the last dimensions we sent to the native side so we can avoid 425 // sending the same dimensions more than once. 426 int mLastWidthSent; 427 int mLastHeightSent; 428 429 private int mContentWidth; // cache of value from WebViewCore 430 private int mContentHeight; // cache of value from WebViewCore 431 432 // Need to have the separate control for horizontal and vertical scrollbar 433 // style than the View's single scrollbar style 434 private boolean mOverlayHorizontalScrollbar = true; 435 private boolean mOverlayVerticalScrollbar = false; 436 437 // our standard speed. this way small distances will be traversed in less 438 // time than large distances, but we cap the duration, so that very large 439 // distances won't take too long to get there. 440 private static final int STD_SPEED = 480; // pixels per second 441 // time for the longest scroll animation 442 private static final int MAX_DURATION = 750; // milliseconds 443 private Scroller mScroller; 444 445 private boolean mWrapContent; 446 447 /** 448 * Private message ids 449 */ 450 private static final int REMEMBER_PASSWORD = 1; 451 private static final int NEVER_REMEMBER_PASSWORD = 2; 452 private static final int SWITCH_TO_SHORTPRESS = 3; 453 private static final int SWITCH_TO_LONGPRESS = 4; 454 private static final int RELEASE_SINGLE_TAP = 5; 455 private static final int REQUEST_FORM_DATA = 6; 456 private static final int SWITCH_TO_CLICK = 7; 457 private static final int RESUME_WEBCORE_UPDATE = 8; 458 459 //! arg1=x, arg2=y 460 static final int SCROLL_TO_MSG_ID = 10; 461 static final int SCROLL_BY_MSG_ID = 11; 462 //! arg1=x, arg2=y 463 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 464 //! arg1=x, arg2=y 465 static final int SYNC_SCROLL_TO_MSG_ID = 13; 466 static final int NEW_PICTURE_MSG_ID = 14; 467 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 468 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 469 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 470 static final int MOVE_OUT_OF_PLUGIN = 19; 471 static final int CLEAR_TEXT_ENTRY = 20; 472 473 static final int UPDATE_CLIPBOARD = 22; 474 static final int LONG_PRESS_CENTER = 23; 475 static final int PREVENT_TOUCH_ID = 24; 476 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 477 // obj=Rect in doc coordinates 478 static final int INVAL_RECT_MSG_ID = 26; 479 static final int REQUEST_KEYBOARD = 27; 480 481 static final String[] HandlerDebugString = { 482 "REMEMBER_PASSWORD", // = 1; 483 "NEVER_REMEMBER_PASSWORD", // = 2; 484 "SWITCH_TO_SHORTPRESS", // = 3; 485 "SWITCH_TO_LONGPRESS", // = 4; 486 "RELEASE_SINGLE_TAP", // = 5; 487 "REQUEST_FORM_DATA", // = 6; 488 "SWITCH_TO_CLICK", // = 7; 489 "RESUME_WEBCORE_UPDATE", // = 8; 490 "9", 491 "SCROLL_TO_MSG_ID", // = 10; 492 "SCROLL_BY_MSG_ID", // = 11; 493 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 494 "SYNC_SCROLL_TO_MSG_ID", // = 13; 495 "NEW_PICTURE_MSG_ID", // = 14; 496 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 497 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 498 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 499 "18", // = 18; 500 "MOVE_OUT_OF_PLUGIN", // = 19; 501 "CLEAR_TEXT_ENTRY", // = 20; 502 "21", // = 21; 503 "UPDATE_CLIPBOARD", // = 22; 504 "LONG_PRESS_CENTER", // = 23; 505 "PREVENT_TOUCH_ID", // = 24; 506 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 507 "INVAL_RECT_MSG_ID", // = 26; 508 "REQUEST_KEYBOARD" // = 27; 509 }; 510 511 // width which view is considered to be fully zoomed out 512 static final int ZOOM_OUT_WIDTH = 1008; 513 514 // default scale limit. Depending on the display density 515 private static float DEFAULT_MAX_ZOOM_SCALE; 516 private static float DEFAULT_MIN_ZOOM_SCALE; 517 // scale limit, which can be set through viewport meta tag in the web page 518 private float mMaxZoomScale; 519 private float mMinZoomScale; 520 private boolean mMinZoomScaleFixed = false; 521 522 // initial scale in percent. 0 means using default. 523 private int mInitialScale = 0; 524 525 // while in the zoom overview mode, the page's width is fully fit to the 526 // current window. The page is alive, in another words, you can click to 527 // follow the links. Double tap will toggle between zoom overview mode and 528 // the last zoom scale. 529 boolean mInZoomOverview = false; 530 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 531 // engadget always have wider mContentWidth no matter what viewport size is. 532 int mZoomOverviewWidth = 0; 533 float mLastScale; 534 535 // default scale. Depending on the display density. 536 static int DEFAULT_SCALE_PERCENT; 537 private float mDefaultScale; 538 539 // set to true temporarily while the zoom control is being dragged 540 private boolean mPreviewZoomOnly = false; 541 542 // computed scale and inverse, from mZoomWidth. 543 private float mActualScale; 544 private float mInvActualScale; 545 // if this is non-zero, it is used on drawing rather than mActualScale 546 private float mZoomScale; 547 private float mInvInitialZoomScale; 548 private float mInvFinalZoomScale; 549 private int mInitialScrollX; 550 private int mInitialScrollY; 551 private long mZoomStart; 552 private static final int ZOOM_ANIMATION_LENGTH = 500; 553 554 private boolean mUserScroll = false; 555 556 private int mSnapScrollMode = SNAP_NONE; 557 private static final int SNAP_NONE = 1; 558 private static final int SNAP_X = 2; 559 private static final int SNAP_Y = 3; 560 private static final int SNAP_X_LOCK = 4; 561 private static final int SNAP_Y_LOCK = 5; 562 private boolean mSnapPositive; 563 564 // Used to match key downs and key ups 565 private boolean mGotKeyDown; 566 567 /* package */ static boolean mLogEvent = true; 568 private static final int EVENT_LOG_ZOOM_LEVEL_CHANGE = 70101; 569 private static final int EVENT_LOG_DOUBLE_TAP_DURATION = 70102; 570 571 // for event log 572 private long mLastTouchUpTime = 0; 573 574 /** 575 * URI scheme for telephone number 576 */ 577 public static final String SCHEME_TEL = "tel:"; 578 /** 579 * URI scheme for email address 580 */ 581 public static final String SCHEME_MAILTO = "mailto:"; 582 /** 583 * URI scheme for map address 584 */ 585 public static final String SCHEME_GEO = "geo:0,0?q="; 586 587 private int mBackgroundColor = Color.WHITE; 588 589 // Used to notify listeners of a new picture. 590 private PictureListener mPictureListener; 591 /** 592 * Interface to listen for new pictures as they change. 593 */ 594 public interface PictureListener { 595 /** 596 * Notify the listener that the picture has changed. 597 * @param view The WebView that owns the picture. 598 * @param picture The new picture. 599 */ 600 public void onNewPicture(WebView view, Picture picture); 601 } 602 603 // FIXME: Want to make this public, but need to change the API file. 604 public /*static*/ class HitTestResult { 605 /** 606 * Default HitTestResult, where the target is unknown 607 */ 608 public static final int UNKNOWN_TYPE = 0; 609 /** 610 * HitTestResult for hitting a HTML::a tag 611 */ 612 public static final int ANCHOR_TYPE = 1; 613 /** 614 * HitTestResult for hitting a phone number 615 */ 616 public static final int PHONE_TYPE = 2; 617 /** 618 * HitTestResult for hitting a map address 619 */ 620 public static final int GEO_TYPE = 3; 621 /** 622 * HitTestResult for hitting an email address 623 */ 624 public static final int EMAIL_TYPE = 4; 625 /** 626 * HitTestResult for hitting an HTML::img tag 627 */ 628 public static final int IMAGE_TYPE = 5; 629 /** 630 * HitTestResult for hitting a HTML::a tag which contains HTML::img 631 */ 632 public static final int IMAGE_ANCHOR_TYPE = 6; 633 /** 634 * HitTestResult for hitting a HTML::a tag with src=http 635 */ 636 public static final int SRC_ANCHOR_TYPE = 7; 637 /** 638 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 639 */ 640 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 641 /** 642 * HitTestResult for hitting an edit text area 643 */ 644 public static final int EDIT_TEXT_TYPE = 9; 645 646 private int mType; 647 private String mExtra; 648 649 HitTestResult() { 650 mType = UNKNOWN_TYPE; 651 } 652 653 private void setType(int type) { 654 mType = type; 655 } 656 657 private void setExtra(String extra) { 658 mExtra = extra; 659 } 660 661 public int getType() { 662 return mType; 663 } 664 665 public String getExtra() { 666 return mExtra; 667 } 668 } 669 670 // The View containing the zoom controls 671 private ExtendedZoomControls mZoomControls; 672 private Runnable mZoomControlRunnable; 673 674 private ZoomButtonsController mZoomButtonsController; 675 676 // These keep track of the center point of the zoom. They are used to 677 // determine the point around which we should zoom. 678 private float mZoomCenterX; 679 private float mZoomCenterY; 680 681 private ZoomButtonsController.OnZoomListener mZoomListener = 682 new ZoomButtonsController.OnZoomListener() { 683 684 public void onVisibilityChanged(boolean visible) { 685 if (visible) { 686 switchOutDrawHistory(); 687 updateZoomButtonsEnabled(); 688 } 689 } 690 691 public void onZoom(boolean zoomIn) { 692 if (zoomIn) { 693 zoomIn(); 694 } else { 695 zoomOut(); 696 } 697 698 updateZoomButtonsEnabled(); 699 } 700 }; 701 702 /** 703 * Construct a new WebView with a Context object. 704 * @param context A Context object used to access application assets. 705 */ 706 public WebView(Context context) { 707 this(context, null); 708 } 709 710 /** 711 * Construct a new WebView with layout parameters. 712 * @param context A Context object used to access application assets. 713 * @param attrs An AttributeSet passed to our parent. 714 */ 715 public WebView(Context context, AttributeSet attrs) { 716 this(context, attrs, com.android.internal.R.attr.webViewStyle); 717 } 718 719 /** 720 * Construct a new WebView with layout parameters and a default style. 721 * @param context A Context object used to access application assets. 722 * @param attrs An AttributeSet passed to our parent. 723 * @param defStyle The default style resource ID. 724 */ 725 public WebView(Context context, AttributeSet attrs, int defStyle) { 726 super(context, attrs, defStyle); 727 init(); 728 729 mCallbackProxy = new CallbackProxy(context, this); 730 mWebViewCore = new WebViewCore(context, this, mCallbackProxy); 731 mDatabase = WebViewDatabase.getInstance(context); 732 mScroller = new Scroller(context); 733 734 mViewManager = new ViewManager(this); 735 736 mZoomButtonsController = new ZoomButtonsController(this); 737 mZoomButtonsController.setOnZoomListener(mZoomListener); 738 // ZoomButtonsController positions the buttons at the bottom, but in 739 // the middle. Change their layout parameters so they appear on the 740 // right. 741 View controls = mZoomButtonsController.getZoomControls(); 742 ViewGroup.LayoutParams params = controls.getLayoutParams(); 743 if (params instanceof FrameLayout.LayoutParams) { 744 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 745 params; 746 frameParams.gravity = Gravity.RIGHT; 747 } 748 } 749 750 private void updateZoomButtonsEnabled() { 751 boolean canZoomIn = mActualScale < mMaxZoomScale; 752 boolean canZoomOut = mActualScale > mMinZoomScale; 753 if (!canZoomIn && !canZoomOut) { 754 // Hide the zoom in and out buttons, as well as the fit to page 755 // button, if the page cannot zoom 756 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 757 } else { 758 // Bring back the hidden zoom controls. 759 mZoomButtonsController.getZoomControls() 760 .setVisibility(View.VISIBLE); 761 // Set each one individually, as a page may be able to zoom in 762 // or out. 763 mZoomButtonsController.setZoomInEnabled(canZoomIn); 764 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 765 } 766 } 767 768 private void init() { 769 setWillNotDraw(false); 770 setFocusable(true); 771 setFocusableInTouchMode(true); 772 setClickable(true); 773 setLongClickable(true); 774 775 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 776 int slop = configuration.getScaledTouchSlop(); 777 mTouchSlopSquare = slop * slop; 778 mMinLockSnapReverseDistance = slop; 779 slop = configuration.getScaledDoubleTapSlop(); 780 mDoubleTapSlopSquare = slop * slop; 781 final float density = getContext().getResources().getDisplayMetrics().density; 782 // use one line height, 16 based on our current default font, for how 783 // far we allow a touch be away from the edge of a link 784 mNavSlop = (int) (16 * density); 785 // density adjusted scale factors 786 DEFAULT_SCALE_PERCENT = (int) (100 * density); 787 mDefaultScale = density; 788 mActualScale = density; 789 mInvActualScale = 1 / density; 790 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 791 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 792 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 793 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 794 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 795 } 796 797 /* package */void updateDefaultZoomDensity(int zoomDensity) { 798 final float density = getContext().getResources().getDisplayMetrics().density 799 * 100 / zoomDensity; 800 if (Math.abs(density - mDefaultScale) > 0.01) { 801 float scaleFactor = density / mDefaultScale; 802 // adjust the limits 803 mNavSlop = (int) (16 * density); 804 DEFAULT_SCALE_PERCENT = (int) (100 * density); 805 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 806 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 807 mDefaultScale = density; 808 mMaxZoomScale *= scaleFactor; 809 mMinZoomScale *= scaleFactor; 810 setNewZoomScale(mActualScale * scaleFactor, false); 811 } 812 } 813 814 /* package */ boolean onSavePassword(String schemePlusHost, String username, 815 String password, final Message resumeMsg) { 816 boolean rVal = false; 817 if (resumeMsg == null) { 818 // null resumeMsg implies saving password silently 819 mDatabase.setUsernamePassword(schemePlusHost, username, password); 820 } else { 821 final Message remember = mPrivateHandler.obtainMessage( 822 REMEMBER_PASSWORD); 823 remember.getData().putString("host", schemePlusHost); 824 remember.getData().putString("username", username); 825 remember.getData().putString("password", password); 826 remember.obj = resumeMsg; 827 828 final Message neverRemember = mPrivateHandler.obtainMessage( 829 NEVER_REMEMBER_PASSWORD); 830 neverRemember.getData().putString("host", schemePlusHost); 831 neverRemember.getData().putString("username", username); 832 neverRemember.getData().putString("password", password); 833 neverRemember.obj = resumeMsg; 834 835 new AlertDialog.Builder(getContext()) 836 .setTitle(com.android.internal.R.string.save_password_label) 837 .setMessage(com.android.internal.R.string.save_password_message) 838 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 839 new DialogInterface.OnClickListener() { 840 public void onClick(DialogInterface dialog, int which) { 841 resumeMsg.sendToTarget(); 842 } 843 }) 844 .setNeutralButton(com.android.internal.R.string.save_password_remember, 845 new DialogInterface.OnClickListener() { 846 public void onClick(DialogInterface dialog, int which) { 847 remember.sendToTarget(); 848 } 849 }) 850 .setNegativeButton(com.android.internal.R.string.save_password_never, 851 new DialogInterface.OnClickListener() { 852 public void onClick(DialogInterface dialog, int which) { 853 neverRemember.sendToTarget(); 854 } 855 }) 856 .setOnCancelListener(new OnCancelListener() { 857 public void onCancel(DialogInterface dialog) { 858 resumeMsg.sendToTarget(); 859 } 860 }).show(); 861 // Return true so that WebViewCore will pause while the dialog is 862 // up. 863 rVal = true; 864 } 865 return rVal; 866 } 867 868 @Override 869 public void setScrollBarStyle(int style) { 870 if (style == View.SCROLLBARS_INSIDE_INSET 871 || style == View.SCROLLBARS_OUTSIDE_INSET) { 872 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 873 } else { 874 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 875 } 876 super.setScrollBarStyle(style); 877 } 878 879 /** 880 * Specify whether the horizontal scrollbar has overlay style. 881 * @param overlay TRUE if horizontal scrollbar should have overlay style. 882 */ 883 public void setHorizontalScrollbarOverlay(boolean overlay) { 884 mOverlayHorizontalScrollbar = overlay; 885 } 886 887 /** 888 * Specify whether the vertical scrollbar has overlay style. 889 * @param overlay TRUE if vertical scrollbar should have overlay style. 890 */ 891 public void setVerticalScrollbarOverlay(boolean overlay) { 892 mOverlayVerticalScrollbar = overlay; 893 } 894 895 /** 896 * Return whether horizontal scrollbar has overlay style 897 * @return TRUE if horizontal scrollbar has overlay style. 898 */ 899 public boolean overlayHorizontalScrollbar() { 900 return mOverlayHorizontalScrollbar; 901 } 902 903 /** 904 * Return whether vertical scrollbar has overlay style 905 * @return TRUE if vertical scrollbar has overlay style. 906 */ 907 public boolean overlayVerticalScrollbar() { 908 return mOverlayVerticalScrollbar; 909 } 910 911 /* 912 * Return the width of the view where the content of WebView should render 913 * to. 914 */ 915 private int getViewWidth() { 916 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 917 return getWidth(); 918 } else { 919 return getWidth() - getVerticalScrollbarWidth(); 920 } 921 } 922 923 /* 924 * Return the height of the view where the content of WebView should render 925 * to. 926 */ 927 private int getViewHeight() { 928 if (!isHorizontalScrollBarEnabled() || mOverlayHorizontalScrollbar) { 929 return getHeight(); 930 } else { 931 return getHeight() - getHorizontalScrollbarHeight(); 932 } 933 } 934 935 /** 936 * @return The SSL certificate for the main top-level page or null if 937 * there is no certificate (the site is not secure). 938 */ 939 public SslCertificate getCertificate() { 940 return mCertificate; 941 } 942 943 /** 944 * Sets the SSL certificate for the main top-level page. 945 */ 946 public void setCertificate(SslCertificate certificate) { 947 // here, the certificate can be null (if the site is not secure) 948 mCertificate = certificate; 949 } 950 951 //------------------------------------------------------------------------- 952 // Methods called by activity 953 //------------------------------------------------------------------------- 954 955 /** 956 * Save the username and password for a particular host in the WebView's 957 * internal database. 958 * @param host The host that required the credentials. 959 * @param username The username for the given host. 960 * @param password The password for the given host. 961 */ 962 public void savePassword(String host, String username, String password) { 963 mDatabase.setUsernamePassword(host, username, password); 964 } 965 966 /** 967 * Set the HTTP authentication credentials for a given host and realm. 968 * 969 * @param host The host for the credentials. 970 * @param realm The realm for the credentials. 971 * @param username The username for the password. If it is null, it means 972 * password can't be saved. 973 * @param password The password 974 */ 975 public void setHttpAuthUsernamePassword(String host, String realm, 976 String username, String password) { 977 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 978 } 979 980 /** 981 * Retrieve the HTTP authentication username and password for a given 982 * host & realm pair 983 * 984 * @param host The host for which the credentials apply. 985 * @param realm The realm for which the credentials apply. 986 * @return String[] if found, String[0] is username, which can be null and 987 * String[1] is password. Return null if it can't find anything. 988 */ 989 public String[] getHttpAuthUsernamePassword(String host, String realm) { 990 return mDatabase.getHttpAuthUsernamePassword(host, realm); 991 } 992 993 /** 994 * Destroy the internal state of the WebView. This method should be called 995 * after the WebView has been removed from the view system. No other 996 * methods may be called on a WebView after destroy. 997 */ 998 public void destroy() { 999 clearTextEntry(); 1000 if (mWebViewCore != null) { 1001 // Set the handlers to null before destroying WebViewCore so no 1002 // more messages will be posted. 1003 mCallbackProxy.setWebViewClient(null); 1004 mCallbackProxy.setWebChromeClient(null); 1005 // Tell WebViewCore to destroy itself 1006 WebViewCore webViewCore = mWebViewCore; 1007 mWebViewCore = null; // prevent using partial webViewCore 1008 webViewCore.destroy(); 1009 // Remove any pending messages that might not be serviced yet. 1010 mPrivateHandler.removeCallbacksAndMessages(null); 1011 mCallbackProxy.removeCallbacksAndMessages(null); 1012 // Wake up the WebCore thread just in case it is waiting for a 1013 // javascript dialog. 1014 synchronized (mCallbackProxy) { 1015 mCallbackProxy.notify(); 1016 } 1017 } 1018 if (mNativeClass != 0) { 1019 nativeDestroy(); 1020 mNativeClass = 0; 1021 } 1022 } 1023 1024 /** 1025 * Enables platform notifications of data state and proxy changes. 1026 */ 1027 public static void enablePlatformNotifications() { 1028 Network.enablePlatformNotifications(); 1029 } 1030 1031 /** 1032 * If platform notifications are enabled, this should be called 1033 * from the Activity's onPause() or onStop(). 1034 */ 1035 public static void disablePlatformNotifications() { 1036 Network.disablePlatformNotifications(); 1037 } 1038 1039 /** 1040 * Sets JavaScript engine flags. 1041 * 1042 * @param flags JS engine flags in a String 1043 * 1044 * @hide pending API solidification 1045 */ 1046 public void setJsFlags(String flags) { 1047 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1048 } 1049 1050 /** 1051 * Inform WebView of the network state. This is used to set 1052 * the javascript property window.navigator.isOnline and 1053 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1054 * @param networkUp boolean indicating if network is available 1055 */ 1056 public void setNetworkAvailable(boolean networkUp) { 1057 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1058 networkUp ? 1 : 0, 0); 1059 } 1060 1061 /** 1062 * Save the state of this WebView used in 1063 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1064 * method no longer stores the display data for this WebView. The previous 1065 * behavior could potentially leak files if {@link #restoreState} was never 1066 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1067 * and restoring the display data. 1068 * @param outState The Bundle to store the WebView state. 1069 * @return The same copy of the back/forward list used to save the state. If 1070 * saveState fails, the returned list will be null. 1071 * @see #savePicture 1072 * @see #restorePicture 1073 */ 1074 public WebBackForwardList saveState(Bundle outState) { 1075 if (outState == null) { 1076 return null; 1077 } 1078 // We grab a copy of the back/forward list because a client of WebView 1079 // may have invalidated the history list by calling clearHistory. 1080 WebBackForwardList list = copyBackForwardList(); 1081 final int currentIndex = list.getCurrentIndex(); 1082 final int size = list.getSize(); 1083 // We should fail saving the state if the list is empty or the index is 1084 // not in a valid range. 1085 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1086 return null; 1087 } 1088 outState.putInt("index", currentIndex); 1089 // FIXME: This should just be a byte[][] instead of ArrayList but 1090 // Parcel.java does not have the code to handle multi-dimensional 1091 // arrays. 1092 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1093 for (int i = 0; i < size; i++) { 1094 WebHistoryItem item = list.getItemAtIndex(i); 1095 byte[] data = item.getFlattenedData(); 1096 if (data == null) { 1097 // It would be very odd to not have any data for a given history 1098 // item. And we will fail to rebuild the history list without 1099 // flattened data. 1100 return null; 1101 } 1102 history.add(data); 1103 } 1104 outState.putSerializable("history", history); 1105 if (mCertificate != null) { 1106 outState.putBundle("certificate", 1107 SslCertificate.saveState(mCertificate)); 1108 } 1109 return list; 1110 } 1111 1112 /** 1113 * Save the current display data to the Bundle given. Used in conjunction 1114 * with {@link #saveState}. 1115 * @param b A Bundle to store the display data. 1116 * @param dest The file to store the serialized picture data. Will be 1117 * overwritten with this WebView's picture data. 1118 * @return True if the picture was successfully saved. 1119 */ 1120 public boolean savePicture(Bundle b, File dest) { 1121 if (dest == null || b == null) { 1122 return false; 1123 } 1124 final Picture p = capturePicture(); 1125 try { 1126 final FileOutputStream out = new FileOutputStream(dest); 1127 p.writeToStream(out); 1128 out.close(); 1129 } catch (FileNotFoundException e){ 1130 e.printStackTrace(); 1131 } catch (IOException e) { 1132 e.printStackTrace(); 1133 } catch (RuntimeException e) { 1134 e.printStackTrace(); 1135 } 1136 if (dest.length() > 0) { 1137 b.putInt("scrollX", mScrollX); 1138 b.putInt("scrollY", mScrollY); 1139 b.putFloat("scale", mActualScale); 1140 if (mInZoomOverview) { 1141 b.putFloat("lastScale", mLastScale); 1142 } 1143 return true; 1144 } 1145 return false; 1146 } 1147 1148 /** 1149 * Restore the display data that was save in {@link #savePicture}. Used in 1150 * conjunction with {@link #restoreState}. 1151 * @param b A Bundle containing the saved display data. 1152 * @param src The file where the picture data was stored. 1153 * @return True if the picture was successfully restored. 1154 */ 1155 public boolean restorePicture(Bundle b, File src) { 1156 if (src == null || b == null) { 1157 return false; 1158 } 1159 if (src.exists()) { 1160 Picture p = null; 1161 try { 1162 final FileInputStream in = new FileInputStream(src); 1163 p = Picture.createFromStream(in); 1164 in.close(); 1165 } catch (FileNotFoundException e){ 1166 e.printStackTrace(); 1167 } catch (RuntimeException e) { 1168 e.printStackTrace(); 1169 } catch (IOException e) { 1170 e.printStackTrace(); 1171 } 1172 if (p != null) { 1173 int sx = b.getInt("scrollX", 0); 1174 int sy = b.getInt("scrollY", 0); 1175 float scale = b.getFloat("scale", 1.0f); 1176 mDrawHistory = true; 1177 mHistoryPicture = p; 1178 mScrollX = sx; 1179 mScrollY = sy; 1180 mHistoryWidth = Math.round(p.getWidth() * scale); 1181 mHistoryHeight = Math.round(p.getHeight() * scale); 1182 // as getWidth() / getHeight() of the view are not 1183 // available yet, set up mActualScale, so that when 1184 // onSizeChanged() is called, the rest will be set 1185 // correctly 1186 mActualScale = scale; 1187 float lastScale = b.getFloat("lastScale", -1.0f); 1188 if (lastScale > 0) { 1189 mInZoomOverview = true; 1190 mLastScale = lastScale; 1191 } else { 1192 mInZoomOverview = false; 1193 } 1194 invalidate(); 1195 return true; 1196 } 1197 } 1198 return false; 1199 } 1200 1201 /** 1202 * Restore the state of this WebView from the given map used in 1203 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1204 * be called to restore the state of the WebView before using the object. If 1205 * it is called after the WebView has had a chance to build state (load 1206 * pages, create a back/forward list, etc.) there may be undesirable 1207 * side-effects. Please note that this method no longer restores the 1208 * display data for this WebView. See {@link #savePicture} and {@link 1209 * #restorePicture} for saving and restoring the display data. 1210 * @param inState The incoming Bundle of state. 1211 * @return The restored back/forward list or null if restoreState failed. 1212 * @see #savePicture 1213 * @see #restorePicture 1214 */ 1215 public WebBackForwardList restoreState(Bundle inState) { 1216 WebBackForwardList returnList = null; 1217 if (inState == null) { 1218 return returnList; 1219 } 1220 if (inState.containsKey("index") && inState.containsKey("history")) { 1221 mCertificate = SslCertificate.restoreState( 1222 inState.getBundle("certificate")); 1223 1224 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1225 final int index = inState.getInt("index"); 1226 // We can't use a clone of the list because we need to modify the 1227 // shared copy, so synchronize instead to prevent concurrent 1228 // modifications. 1229 synchronized (list) { 1230 final List<byte[]> history = 1231 (List<byte[]>) inState.getSerializable("history"); 1232 final int size = history.size(); 1233 // Check the index bounds so we don't crash in native code while 1234 // restoring the history index. 1235 if (index < 0 || index >= size) { 1236 return null; 1237 } 1238 for (int i = 0; i < size; i++) { 1239 byte[] data = history.remove(0); 1240 if (data == null) { 1241 // If we somehow have null data, we cannot reconstruct 1242 // the item and thus our history list cannot be rebuilt. 1243 return null; 1244 } 1245 WebHistoryItem item = new WebHistoryItem(data); 1246 list.addHistoryItem(item); 1247 } 1248 // Grab the most recent copy to return to the caller. 1249 returnList = copyBackForwardList(); 1250 // Update the copy to have the correct index. 1251 returnList.setCurrentIndex(index); 1252 } 1253 // Remove all pending messages because we are restoring previous 1254 // state. 1255 mWebViewCore.removeMessages(); 1256 // Send a restore state message. 1257 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1258 } 1259 return returnList; 1260 } 1261 1262 /** 1263 * Load the given url. 1264 * @param url The url of the resource to load. 1265 */ 1266 public void loadUrl(String url) { 1267 if (url == null) { 1268 return; 1269 } 1270 switchOutDrawHistory(); 1271 mWebViewCore.sendMessage(EventHub.LOAD_URL, url); 1272 clearTextEntry(); 1273 } 1274 1275 /** 1276 * Load the url with postData using "POST" method into the WebView. If url 1277 * is not a network url, it will be loaded with {link 1278 * {@link #loadUrl(String)} instead. 1279 * 1280 * @param url The url of the resource to load. 1281 * @param postData The data will be passed to "POST" request. 1282 * 1283 * @hide pending API solidification 1284 */ 1285 public void postUrl(String url, byte[] postData) { 1286 if (URLUtil.isNetworkUrl(url)) { 1287 switchOutDrawHistory(); 1288 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1289 arg.mUrl = url; 1290 arg.mPostData = postData; 1291 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1292 clearTextEntry(); 1293 } else { 1294 loadUrl(url); 1295 } 1296 } 1297 1298 /** 1299 * Load the given data into the WebView. This will load the data into 1300 * WebView using the data: scheme. Content loaded through this mechanism 1301 * does not have the ability to load content from the network. 1302 * @param data A String of data in the given encoding. 1303 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1304 * @param encoding The encoding of the data. i.e. utf-8, base64 1305 */ 1306 public void loadData(String data, String mimeType, String encoding) { 1307 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1308 } 1309 1310 /** 1311 * Load the given data into the WebView, use the provided URL as the base 1312 * URL for the content. The base URL is the URL that represents the page 1313 * that is loaded through this interface. As such, it is used for the 1314 * history entry and to resolve any relative URLs. The failUrl is used if 1315 * browser fails to load the data provided. If it is empty or null, and the 1316 * load fails, then no history entry is created. 1317 * <p> 1318 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1319 * files through "file:///android_asset/" for the sub resources is more 1320 * restricted. If you provide null or empty string as baseUrl, you won't be 1321 * able to access asset files. If the baseUrl is anything other than 1322 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1323 * sub resources. 1324 * 1325 * @param baseUrl Url to resolve relative paths with, if null defaults to 1326 * "about:blank" 1327 * @param data A String of data in the given encoding. 1328 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1329 * defaults to "text/html" 1330 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1331 * @param failUrl URL to use if the content fails to load or null. 1332 */ 1333 public void loadDataWithBaseURL(String baseUrl, String data, 1334 String mimeType, String encoding, String failUrl) { 1335 1336 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1337 loadData(data, mimeType, encoding); 1338 return; 1339 } 1340 switchOutDrawHistory(); 1341 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1342 arg.mBaseUrl = baseUrl; 1343 arg.mData = data; 1344 arg.mMimeType = mimeType; 1345 arg.mEncoding = encoding; 1346 arg.mFailUrl = failUrl; 1347 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1348 clearTextEntry(); 1349 } 1350 1351 /** 1352 * Stop the current load. 1353 */ 1354 public void stopLoading() { 1355 // TODO: should we clear all the messages in the queue before sending 1356 // STOP_LOADING? 1357 switchOutDrawHistory(); 1358 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1359 } 1360 1361 /** 1362 * Reload the current url. 1363 */ 1364 public void reload() { 1365 switchOutDrawHistory(); 1366 mWebViewCore.sendMessage(EventHub.RELOAD); 1367 } 1368 1369 /** 1370 * Return true if this WebView has a back history item. 1371 * @return True iff this WebView has a back history item. 1372 */ 1373 public boolean canGoBack() { 1374 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1375 synchronized (l) { 1376 if (l.getClearPending()) { 1377 return false; 1378 } else { 1379 return l.getCurrentIndex() > 0; 1380 } 1381 } 1382 } 1383 1384 /** 1385 * Go back in the history of this WebView. 1386 */ 1387 public void goBack() { 1388 goBackOrForward(-1); 1389 } 1390 1391 /** 1392 * Return true if this WebView has a forward history item. 1393 * @return True iff this Webview has a forward history item. 1394 */ 1395 public boolean canGoForward() { 1396 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1397 synchronized (l) { 1398 if (l.getClearPending()) { 1399 return false; 1400 } else { 1401 return l.getCurrentIndex() < l.getSize() - 1; 1402 } 1403 } 1404 } 1405 1406 /** 1407 * Go forward in the history of this WebView. 1408 */ 1409 public void goForward() { 1410 goBackOrForward(1); 1411 } 1412 1413 /** 1414 * Return true if the page can go back or forward the given 1415 * number of steps. 1416 * @param steps The negative or positive number of steps to move the 1417 * history. 1418 */ 1419 public boolean canGoBackOrForward(int steps) { 1420 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1421 synchronized (l) { 1422 if (l.getClearPending()) { 1423 return false; 1424 } else { 1425 int newIndex = l.getCurrentIndex() + steps; 1426 return newIndex >= 0 && newIndex < l.getSize(); 1427 } 1428 } 1429 } 1430 1431 /** 1432 * Go to the history item that is the number of steps away from 1433 * the current item. Steps is negative if backward and positive 1434 * if forward. 1435 * @param steps The number of steps to take back or forward in the back 1436 * forward list. 1437 */ 1438 public void goBackOrForward(int steps) { 1439 goBackOrForward(steps, false); 1440 } 1441 1442 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1443 // every time we go back or forward, we want to reset the 1444 // WebView certificate: 1445 // if the new site is secure, we will reload it and get a 1446 // new certificate set; 1447 // if the new site is not secure, the certificate must be 1448 // null, and that will be the case 1449 mCertificate = null; 1450 if (steps != 0) { 1451 clearTextEntry(); 1452 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1453 ignoreSnapshot ? 1 : 0); 1454 } 1455 } 1456 1457 private boolean extendScroll(int y) { 1458 int finalY = mScroller.getFinalY(); 1459 int newY = pinLocY(finalY + y); 1460 if (newY == finalY) return false; 1461 mScroller.setFinalY(newY); 1462 mScroller.extendDuration(computeDuration(0, y)); 1463 return true; 1464 } 1465 1466 /** 1467 * Scroll the contents of the view up by half the view size 1468 * @param top true to jump to the top of the page 1469 * @return true if the page was scrolled 1470 */ 1471 public boolean pageUp(boolean top) { 1472 if (mNativeClass == 0) { 1473 return false; 1474 } 1475 nativeClearCursor(); // start next trackball movement from page edge 1476 if (top) { 1477 // go to the top of the document 1478 return pinScrollTo(mScrollX, 0, true, 0); 1479 } 1480 // Page up 1481 int h = getHeight(); 1482 int y; 1483 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1484 y = -h + PAGE_SCROLL_OVERLAP; 1485 } else { 1486 y = -h / 2; 1487 } 1488 mUserScroll = true; 1489 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1490 : extendScroll(y); 1491 } 1492 1493 /** 1494 * Scroll the contents of the view down by half the page size 1495 * @param bottom true to jump to bottom of page 1496 * @return true if the page was scrolled 1497 */ 1498 public boolean pageDown(boolean bottom) { 1499 if (mNativeClass == 0) { 1500 return false; 1501 } 1502 nativeClearCursor(); // start next trackball movement from page edge 1503 if (bottom) { 1504 return pinScrollTo(mScrollX, mContentHeight, true, 0); 1505 } 1506 // Page down. 1507 int h = getHeight(); 1508 int y; 1509 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1510 y = h - PAGE_SCROLL_OVERLAP; 1511 } else { 1512 y = h / 2; 1513 } 1514 mUserScroll = true; 1515 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1516 : extendScroll(y); 1517 } 1518 1519 /** 1520 * Clear the view so that onDraw() will draw nothing but white background, 1521 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1522 */ 1523 public void clearView() { 1524 mContentWidth = 0; 1525 mContentHeight = 0; 1526 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1527 } 1528 1529 /** 1530 * Return a new picture that captures the current display of the webview. 1531 * This is a copy of the display, and will be unaffected if the webview 1532 * later loads a different URL. 1533 * 1534 * @return a picture containing the current contents of the view. Note this 1535 * picture is of the entire document, and is not restricted to the 1536 * bounds of the view. 1537 */ 1538 public Picture capturePicture() { 1539 if (null == mWebViewCore) return null; // check for out of memory tab 1540 return mWebViewCore.copyContentPicture(); 1541 } 1542 1543 /** 1544 * Return true if the browser is displaying a TextView for text input. 1545 */ 1546 private boolean inEditingMode() { 1547 return mWebTextView != null && mWebTextView.getParent() != null 1548 && mWebTextView.hasFocus(); 1549 } 1550 1551 private void clearTextEntry() { 1552 if (inEditingMode()) { 1553 mWebTextView.remove(); 1554 } 1555 } 1556 1557 /** 1558 * Return the current scale of the WebView 1559 * @return The current scale. 1560 */ 1561 public float getScale() { 1562 return mActualScale; 1563 } 1564 1565 /** 1566 * Set the initial scale for the WebView. 0 means default. If 1567 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1568 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1569 * WebView starts will this value as initial scale. 1570 * 1571 * @param scaleInPercent The initial scale in percent. 1572 */ 1573 public void setInitialScale(int scaleInPercent) { 1574 mInitialScale = scaleInPercent; 1575 } 1576 1577 /** 1578 * Invoke the graphical zoom picker widget for this WebView. This will 1579 * result in the zoom widget appearing on the screen to control the zoom 1580 * level of this WebView. 1581 */ 1582 public void invokeZoomPicker() { 1583 if (!getSettings().supportZoom()) { 1584 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1585 return; 1586 } 1587 clearTextEntry(); 1588 if (getSettings().getBuiltInZoomControls()) { 1589 mZoomButtonsController.setVisible(true); 1590 } else { 1591 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1592 mPrivateHandler.postDelayed(mZoomControlRunnable, 1593 ZOOM_CONTROLS_TIMEOUT); 1594 } 1595 } 1596 1597 /** 1598 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1599 * is found and the anchor has a non-javascript url, the HitTestResult type 1600 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1601 * anchor does not have a url or if it is a javascript url, the type will 1602 * be UNKNOWN_TYPE and the url has to be retrieved through 1603 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1604 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1605 * the "extra" field. A type of 1606 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1607 * a child node. If a phone number is found, the HitTestResult type is set 1608 * to PHONE_TYPE and the phone number is set in the "extra" field of 1609 * HitTestResult. If a map address is found, the HitTestResult type is set 1610 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1611 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1612 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1613 * HitTestResult type is set to UNKNOWN_TYPE. 1614 */ 1615 public HitTestResult getHitTestResult() { 1616 if (mNativeClass == 0) { 1617 return null; 1618 } 1619 1620 HitTestResult result = new HitTestResult(); 1621 if (nativeHasCursorNode()) { 1622 if (nativeCursorIsTextInput()) { 1623 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1624 } else { 1625 String text = nativeCursorText(); 1626 if (text != null) { 1627 if (text.startsWith(SCHEME_TEL)) { 1628 result.setType(HitTestResult.PHONE_TYPE); 1629 result.setExtra(text.substring(SCHEME_TEL.length())); 1630 } else if (text.startsWith(SCHEME_MAILTO)) { 1631 result.setType(HitTestResult.EMAIL_TYPE); 1632 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1633 } else if (text.startsWith(SCHEME_GEO)) { 1634 result.setType(HitTestResult.GEO_TYPE); 1635 result.setExtra(URLDecoder.decode(text 1636 .substring(SCHEME_GEO.length()))); 1637 } else if (nativeCursorIsAnchor()) { 1638 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1639 result.setExtra(text); 1640 } 1641 } 1642 } 1643 } 1644 int type = result.getType(); 1645 if (type == HitTestResult.UNKNOWN_TYPE 1646 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1647 // Now check to see if it is an image. 1648 int contentX = viewToContent((int) mLastTouchX + mScrollX); 1649 int contentY = viewToContent((int) mLastTouchY + mScrollY); 1650 String text = nativeImageURI(contentX, contentY); 1651 if (text != null) { 1652 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1653 HitTestResult.IMAGE_TYPE : 1654 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1655 result.setExtra(text); 1656 } 1657 } 1658 return result; 1659 } 1660 1661 /** 1662 * Request the href of an anchor element due to getFocusNodePath returning 1663 * "href." If hrefMsg is null, this method returns immediately and does not 1664 * dispatch hrefMsg to its target. 1665 * 1666 * @param hrefMsg This message will be dispatched with the result of the 1667 * request as the data member with "url" as key. The result can 1668 * be null. 1669 */ 1670 // FIXME: API change required to change the name of this function. We now 1671 // look at the cursor node, and not the focus node. Also, what is 1672 // getFocusNodePath? 1673 public void requestFocusNodeHref(Message hrefMsg) { 1674 if (hrefMsg == null || mNativeClass == 0) { 1675 return; 1676 } 1677 if (nativeCursorIsAnchor()) { 1678 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1679 nativeCursorFramePointer(), nativeCursorNodePointer(), 1680 hrefMsg); 1681 } 1682 } 1683 1684 /** 1685 * Request the url of the image last touched by the user. msg will be sent 1686 * to its target with a String representing the url as its object. 1687 * 1688 * @param msg This message will be dispatched with the result of the request 1689 * as the data member with "url" as key. The result can be null. 1690 */ 1691 public void requestImageRef(Message msg) { 1692 int contentX = viewToContent((int) mLastTouchX + mScrollX); 1693 int contentY = viewToContent((int) mLastTouchY + mScrollY); 1694 String ref = nativeImageURI(contentX, contentY); 1695 Bundle data = msg.getData(); 1696 data.putString("url", ref); 1697 msg.setData(data); 1698 msg.sendToTarget(); 1699 } 1700 1701 private static int pinLoc(int x, int viewMax, int docMax) { 1702// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1703 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1704 // pin the short document to the top/left of the screen 1705 x = 0; 1706// Log.d(LOGTAG, "--- center " + x); 1707 } else if (x < 0) { 1708 x = 0; 1709// Log.d(LOGTAG, "--- zero"); 1710 } else if (x + viewMax > docMax) { 1711 x = docMax - viewMax; 1712// Log.d(LOGTAG, "--- pin " + x); 1713 } 1714 return x; 1715 } 1716 1717 // Expects x in view coordinates 1718 private int pinLocX(int x) { 1719 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1720 } 1721 1722 // Expects y in view coordinates 1723 private int pinLocY(int y) { 1724 return pinLoc(y, getViewHeight(), computeVerticalScrollRange()); 1725 } 1726 1727 /*package*/ int viewToContent(int x) { 1728 return Math.round(x * mInvActualScale); 1729 } 1730 1731 /*package*/ int contentToView(int x) { 1732 return Math.round(x * mActualScale); 1733 } 1734 1735 // Called by JNI to invalidate the View, given rectangle coordinates in 1736 // content space 1737 private void viewInvalidate(int l, int t, int r, int b) { 1738 invalidate(contentToView(l), contentToView(t), contentToView(r), 1739 contentToView(b)); 1740 } 1741 1742 // Called by JNI to invalidate the View after a delay, given rectangle 1743 // coordinates in content space 1744 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1745 postInvalidateDelayed(delay, contentToView(l), contentToView(t), 1746 contentToView(r), contentToView(b)); 1747 } 1748 1749 private Rect contentToView(Rect x) { 1750 return new Rect(contentToView(x.left), contentToView(x.top) 1751 , contentToView(x.right), contentToView(x.bottom)); 1752 } 1753 1754 /* call from webcoreview.draw(), so we're still executing in the UI thread 1755 */ 1756 private void recordNewContentSize(int w, int h, boolean updateLayout) { 1757 1758 // premature data from webkit, ignore 1759 if ((w | h) == 0) { 1760 return; 1761 } 1762 1763 // don't abort a scroll animation if we didn't change anything 1764 if (mContentWidth != w || mContentHeight != h) { 1765 // record new dimensions 1766 mContentWidth = w; 1767 mContentHeight = h; 1768 // If history Picture is drawn, don't update scroll. They will be 1769 // updated when we get out of that mode. 1770 if (!mDrawHistory) { 1771 // repin our scroll, taking into account the new content size 1772 int oldX = mScrollX; 1773 int oldY = mScrollY; 1774 mScrollX = pinLocX(mScrollX); 1775 mScrollY = pinLocY(mScrollY); 1776 // android.util.Log.d("skia", "recordNewContentSize - 1777 // abortAnimation"); 1778 mScroller.abortAnimation(); // just in case 1779 if (oldX != mScrollX || oldY != mScrollY) { 1780 sendOurVisibleRect(); 1781 } 1782 } 1783 } 1784 contentSizeChanged(updateLayout); 1785 } 1786 1787 private void setNewZoomScale(float scale, boolean force) { 1788 if (scale < mMinZoomScale) { 1789 scale = mMinZoomScale; 1790 } else if (scale > mMaxZoomScale) { 1791 scale = mMaxZoomScale; 1792 } 1793 if (scale != mActualScale || force) { 1794 if (mDrawHistory) { 1795 // If history Picture is drawn, don't update scroll. They will 1796 // be updated when we get out of that mode. 1797 if (scale != mActualScale && !mPreviewZoomOnly) { 1798 mCallbackProxy.onScaleChanged(mActualScale, scale); 1799 } 1800 mActualScale = scale; 1801 mInvActualScale = 1 / scale; 1802 if (!mPreviewZoomOnly) { 1803 sendViewSizeZoom(); 1804 } 1805 } else { 1806 // update our scroll so we don't appear to jump 1807 // i.e. keep the center of the doc in the center of the view 1808 1809 int oldX = mScrollX; 1810 int oldY = mScrollY; 1811 float ratio = scale * mInvActualScale; // old inverse 1812 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 1813 float sy = ratio * oldY + (ratio - 1) * mZoomCenterY; 1814 1815 // now update our new scale and inverse 1816 if (scale != mActualScale && !mPreviewZoomOnly) { 1817 mCallbackProxy.onScaleChanged(mActualScale, scale); 1818 } 1819 mActualScale = scale; 1820 mInvActualScale = 1 / scale; 1821 1822 // Scale all the child views 1823 mViewManager.scaleAll(); 1824 1825 // as we don't have animation for scaling, don't do animation 1826 // for scrolling, as it causes weird intermediate state 1827 // pinScrollTo(Math.round(sx), Math.round(sy)); 1828 mScrollX = pinLocX(Math.round(sx)); 1829 mScrollY = pinLocY(Math.round(sy)); 1830 1831 if (!mPreviewZoomOnly) { 1832 sendViewSizeZoom(); 1833 sendOurVisibleRect(); 1834 } 1835 } 1836 } 1837 } 1838 1839 // Used to avoid sending many visible rect messages. 1840 private Rect mLastVisibleRectSent; 1841 private Rect mLastGlobalRect; 1842 1843 private Rect sendOurVisibleRect() { 1844 Rect rect = new Rect(); 1845 calcOurContentVisibleRect(rect); 1846 // Rect.equals() checks for null input. 1847 if (!rect.equals(mLastVisibleRectSent)) { 1848 Point pos = new Point(rect.left, rect.top); 1849 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 1850 nativeMoveGeneration(), 0, pos); 1851 mLastVisibleRectSent = rect; 1852 } 1853 Rect globalRect = new Rect(); 1854 if (getGlobalVisibleRect(globalRect) 1855 && !globalRect.equals(mLastGlobalRect)) { 1856 if (DebugFlags.WEB_VIEW) { 1857 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 1858 + globalRect.top + ",r=" + globalRect.right + ",b=" 1859 + globalRect.bottom); 1860 } 1861 // TODO: the global offset is only used by windowRect() 1862 // in ChromeClientAndroid ; other clients such as touch 1863 // and mouse events could return view + screen relative points. 1864 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 1865 mLastGlobalRect = globalRect; 1866 } 1867 return rect; 1868 } 1869 1870 // Sets r to be the visible rectangle of our webview in view coordinates 1871 private void calcOurVisibleRect(Rect r) { 1872 Point p = new Point(); 1873 getGlobalVisibleRect(r, p); 1874 r.offset(-p.x, -p.y); 1875 if (mFindIsUp) { 1876 r.bottom -= FIND_HEIGHT; 1877 } 1878 } 1879 1880 // Sets r to be our visible rectangle in content coordinates 1881 private void calcOurContentVisibleRect(Rect r) { 1882 calcOurVisibleRect(r); 1883 r.left = viewToContent(r.left); 1884 r.top = viewToContent(r.top); 1885 r.right = viewToContent(r.right); 1886 r.bottom = viewToContent(r.bottom); 1887 } 1888 1889 static class ViewSizeData { 1890 int mWidth; 1891 int mHeight; 1892 int mTextWrapWidth; 1893 float mScale; 1894 } 1895 1896 /** 1897 * Compute unzoomed width and height, and if they differ from the last 1898 * values we sent, send them to webkit (to be used has new viewport) 1899 * 1900 * @return true if new values were sent 1901 */ 1902 private boolean sendViewSizeZoom() { 1903 int viewWidth = getViewWidth(); 1904 int newWidth = Math.round(viewWidth * mInvActualScale); 1905 int newHeight = Math.round(getViewHeight() * mInvActualScale); 1906 /* 1907 * Because the native side may have already done a layout before the 1908 * View system was able to measure us, we have to send a height of 0 to 1909 * remove excess whitespace when we grow our width. This will trigger a 1910 * layout and a change in content size. This content size change will 1911 * mean that contentSizeChanged will either call this method directly or 1912 * indirectly from onSizeChanged. 1913 */ 1914 if (newWidth > mLastWidthSent && mWrapContent) { 1915 newHeight = 0; 1916 } 1917 // Avoid sending another message if the dimensions have not changed. 1918 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 1919 ViewSizeData data = new ViewSizeData(); 1920 data.mWidth = newWidth; 1921 data.mHeight = newHeight; 1922 // while in zoom overview mode, the text are wrapped to the screen 1923 // width matching mLastScale. So that we don't trigger re-flow while 1924 // toggling between overview mode and normal mode. 1925 data.mTextWrapWidth = mInZoomOverview ? Math.round(viewWidth 1926 / mLastScale) : newWidth; 1927 data.mScale = mActualScale; 1928 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 1929 mLastWidthSent = newWidth; 1930 mLastHeightSent = newHeight; 1931 return true; 1932 } 1933 return false; 1934 } 1935 1936 @Override 1937 protected int computeHorizontalScrollRange() { 1938 if (mDrawHistory) { 1939 return mHistoryWidth; 1940 } else { 1941 return contentToView(mContentWidth); 1942 } 1943 } 1944 1945 // Make sure this stays in sync with the actual height of the FindDialog. 1946 private static final int FIND_HEIGHT = 79; 1947 1948 @Override 1949 protected int computeVerticalScrollRange() { 1950 if (mDrawHistory) { 1951 return mHistoryHeight; 1952 } else { 1953 int height = contentToView(mContentHeight); 1954 if (mFindIsUp) { 1955 height += FIND_HEIGHT; 1956 } 1957 return height; 1958 } 1959 } 1960 1961 /** 1962 * Get the url for the current page. This is not always the same as the url 1963 * passed to WebViewClient.onPageStarted because although the load for 1964 * that url has begun, the current page may not have changed. 1965 * @return The url for the current page. 1966 */ 1967 public String getUrl() { 1968 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1969 return h != null ? h.getUrl() : null; 1970 } 1971 1972 /** 1973 * Get the original url for the current page. This is not always the same 1974 * as the url passed to WebViewClient.onPageStarted because although the 1975 * load for that url has begun, the current page may not have changed. 1976 * Also, there may have been redirects resulting in a different url to that 1977 * originally requested. 1978 * @return The url that was originally requested for the current page. 1979 */ 1980 public String getOriginalUrl() { 1981 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1982 return h != null ? h.getOriginalUrl() : null; 1983 } 1984 1985 /** 1986 * Get the title for the current page. This is the title of the current page 1987 * until WebViewClient.onReceivedTitle is called. 1988 * @return The title for the current page. 1989 */ 1990 public String getTitle() { 1991 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1992 return h != null ? h.getTitle() : null; 1993 } 1994 1995 /** 1996 * Get the favicon for the current page. This is the favicon of the current 1997 * page until WebViewClient.onReceivedIcon is called. 1998 * @return The favicon for the current page. 1999 */ 2000 public Bitmap getFavicon() { 2001 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2002 return h != null ? h.getFavicon() : null; 2003 } 2004 2005 /** 2006 * Get the progress for the current page. 2007 * @return The progress for the current page between 0 and 100. 2008 */ 2009 public int getProgress() { 2010 return mCallbackProxy.getProgress(); 2011 } 2012 2013 /** 2014 * @return the height of the HTML content. 2015 */ 2016 public int getContentHeight() { 2017 return mContentHeight; 2018 } 2019 2020 /** 2021 * Pause all layout, parsing, and javascript timers for all webviews. This 2022 * is a global requests, not restricted to just this webview. This can be 2023 * useful if the application has been paused. 2024 */ 2025 public void pauseTimers() { 2026 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2027 } 2028 2029 /** 2030 * Resume all layout, parsing, and javascript timers for all webviews. 2031 * This will resume dispatching all timers. 2032 */ 2033 public void resumeTimers() { 2034 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2035 } 2036 2037 /** 2038 * Call this to pause any extra processing associated with this view and 2039 * its associated DOM/plugins/javascript/etc. For example, if the view is 2040 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2041 * network traffic. When the view is again "active", call onResume(). 2042 * 2043 * Note that this differs from pauseTimers(), which affects all views/DOMs 2044 * @hide 2045 */ 2046 public void onPause() { 2047 if (!mIsPaused) { 2048 mIsPaused = true; 2049 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2050 } 2051 } 2052 2053 /** 2054 * Call this to balanace a previous call to onPause() 2055 * @hide 2056 */ 2057 public void onResume() { 2058 if (mIsPaused) { 2059 mIsPaused = false; 2060 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2061 } 2062 } 2063 2064 /** 2065 * Returns true if the view is paused, meaning onPause() was called. Calling 2066 * onResume() sets the paused state back to false. 2067 * @hide 2068 */ 2069 public boolean isPaused() { 2070 return mIsPaused; 2071 } 2072 2073 /** 2074 * Call this to inform the view that memory is low so that it can 2075 * free any available memory. 2076 * @hide 2077 */ 2078 public void freeMemory() { 2079 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2080 } 2081 2082 /** 2083 * Clear the resource cache. Note that the cache is per-application, so 2084 * this will clear the cache for all WebViews used. 2085 * 2086 * @param includeDiskFiles If false, only the RAM cache is cleared. 2087 */ 2088 public void clearCache(boolean includeDiskFiles) { 2089 // Note: this really needs to be a static method as it clears cache for all 2090 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2091 // we can't make this static. 2092 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2093 includeDiskFiles ? 1 : 0, 0); 2094 } 2095 2096 /** 2097 * Make sure that clearing the form data removes the adapter from the 2098 * currently focused textfield if there is one. 2099 */ 2100 public void clearFormData() { 2101 if (inEditingMode()) { 2102 AutoCompleteAdapter adapter = null; 2103 mWebTextView.setAdapterCustom(adapter); 2104 } 2105 } 2106 2107 /** 2108 * Tell the WebView to clear its internal back/forward list. 2109 */ 2110 public void clearHistory() { 2111 mCallbackProxy.getBackForwardList().setClearPending(); 2112 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2113 } 2114 2115 /** 2116 * Clear the SSL preferences table stored in response to proceeding with SSL 2117 * certificate errors. 2118 */ 2119 public void clearSslPreferences() { 2120 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2121 } 2122 2123 /** 2124 * Return the WebBackForwardList for this WebView. This contains the 2125 * back/forward list for use in querying each item in the history stack. 2126 * This is a copy of the private WebBackForwardList so it contains only a 2127 * snapshot of the current state. Multiple calls to this method may return 2128 * different objects. The object returned from this method will not be 2129 * updated to reflect any new state. 2130 */ 2131 public WebBackForwardList copyBackForwardList() { 2132 return mCallbackProxy.getBackForwardList().clone(); 2133 } 2134 2135 /* 2136 * Highlight and scroll to the next occurance of String in findAll. 2137 * Wraps the page infinitely, and scrolls. Must be called after 2138 * calling findAll. 2139 * 2140 * @param forward Direction to search. 2141 */ 2142 public void findNext(boolean forward) { 2143 nativeFindNext(forward); 2144 } 2145 2146 /* 2147 * Find all instances of find on the page and highlight them. 2148 * @param find String to find. 2149 * @return int The number of occurances of the String "find" 2150 * that were found. 2151 */ 2152 public int findAll(String find) { 2153 mFindIsUp = true; 2154 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2155 invalidate(); 2156 return result; 2157 } 2158 2159 // Used to know whether the find dialog is open. Affects whether 2160 // or not we draw the highlights for matches. 2161 private boolean mFindIsUp; 2162 2163 /** 2164 * Return the first substring consisting of the address of a physical 2165 * location. Currently, only addresses in the United States are detected, 2166 * and consist of: 2167 * - a house number 2168 * - a street name 2169 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2170 * - a city name 2171 * - a state or territory, either spelled out or two-letter abbr. 2172 * - an optional 5 digit or 9 digit zip code. 2173 * 2174 * All names must be correctly capitalized, and the zip code, if present, 2175 * must be valid for the state. The street type must be a standard USPS 2176 * spelling or abbreviation. The state or territory must also be spelled 2177 * or abbreviated using USPS standards. The house number may not exceed 2178 * five digits. 2179 * @param addr The string to search for addresses. 2180 * 2181 * @return the address, or if no address is found, return null. 2182 */ 2183 public static String findAddress(String addr) { 2184 return findAddress(addr, false); 2185 } 2186 2187 /** 2188 * @hide 2189 * Return the first substring consisting of the address of a physical 2190 * location. Currently, only addresses in the United States are detected, 2191 * and consist of: 2192 * - a house number 2193 * - a street name 2194 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2195 * - a city name 2196 * - a state or territory, either spelled out or two-letter abbr. 2197 * - an optional 5 digit or 9 digit zip code. 2198 * 2199 * Names are optionally capitalized, and the zip code, if present, 2200 * must be valid for the state. The street type must be a standard USPS 2201 * spelling or abbreviation. The state or territory must also be spelled 2202 * or abbreviated using USPS standards. The house number may not exceed 2203 * five digits. 2204 * @param addr The string to search for addresses. 2205 * @param caseInsensitive addr Set to true to make search ignore case. 2206 * 2207 * @return the address, or if no address is found, return null. 2208 */ 2209 public static String findAddress(String addr, boolean caseInsensitive) { 2210 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2211 } 2212 2213 /* 2214 * Clear the highlighting surrounding text matches created by findAll. 2215 */ 2216 public void clearMatches() { 2217 mFindIsUp = false; 2218 nativeSetFindIsDown(); 2219 // Now that the dialog has been removed, ensure that we scroll to a 2220 // location that is not beyond the end of the page. 2221 pinScrollTo(mScrollX, mScrollY, false, 0); 2222 invalidate(); 2223 } 2224 2225 /** 2226 * Query the document to see if it contains any image references. The 2227 * message object will be dispatched with arg1 being set to 1 if images 2228 * were found and 0 if the document does not reference any images. 2229 * @param response The message that will be dispatched with the result. 2230 */ 2231 public void documentHasImages(Message response) { 2232 if (response == null) { 2233 return; 2234 } 2235 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2236 } 2237 2238 @Override 2239 public void computeScroll() { 2240 if (mScroller.computeScrollOffset()) { 2241 int oldX = mScrollX; 2242 int oldY = mScrollY; 2243 mScrollX = mScroller.getCurrX(); 2244 mScrollY = mScroller.getCurrY(); 2245 postInvalidate(); // So we draw again 2246 if (oldX != mScrollX || oldY != mScrollY) { 2247 // as onScrollChanged() is not called, sendOurVisibleRect() 2248 // needs to be call explicitly 2249 sendOurVisibleRect(); 2250 } 2251 } else { 2252 super.computeScroll(); 2253 } 2254 } 2255 2256 private static int computeDuration(int dx, int dy) { 2257 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2258 int duration = distance * 1000 / STD_SPEED; 2259 return Math.min(duration, MAX_DURATION); 2260 } 2261 2262 // helper to pin the scrollBy parameters (already in view coordinates) 2263 // returns true if the scroll was changed 2264 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2265 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2266 } 2267 2268 // helper to pin the scrollTo parameters (already in view coordinates) 2269 // returns true if the scroll was changed 2270 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2271 x = pinLocX(x); 2272 y = pinLocY(y); 2273 int dx = x - mScrollX; 2274 int dy = y - mScrollY; 2275 2276 if ((dx | dy) == 0) { 2277 return false; 2278 } 2279 2280 if (true && animate) { 2281 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2282 2283 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2284 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2285 invalidate(); 2286 } else { 2287 mScroller.abortAnimation(); // just in case 2288 scrollTo(x, y); 2289 } 2290 return true; 2291 } 2292 2293 // Scale from content to view coordinates, and pin. 2294 // Also called by jni webview.cpp 2295 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2296 if (mDrawHistory) { 2297 // disallow WebView to change the scroll position as History Picture 2298 // is used in the view system. 2299 // TODO: as we switchOutDrawHistory when trackball or navigation 2300 // keys are hit, this should be safe. Right? 2301 return false; 2302 } 2303 cx = contentToView(cx); 2304 cy = contentToView(cy); 2305 if (mHeightCanMeasure) { 2306 // move our visible rect according to scroll request 2307 if (cy != 0) { 2308 Rect tempRect = new Rect(); 2309 calcOurVisibleRect(tempRect); 2310 tempRect.offset(cx, cy); 2311 requestRectangleOnScreen(tempRect); 2312 } 2313 // FIXME: We scroll horizontally no matter what because currently 2314 // ScrollView and ListView will not scroll horizontally. 2315 // FIXME: Why do we only scroll horizontally if there is no 2316 // vertical scroll? 2317// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2318 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2319 } else { 2320 return pinScrollBy(cx, cy, animate, 0); 2321 } 2322 } 2323 2324 // scale from content to view coordinates, and pin 2325 // return true if pin caused the final x/y different than the request cx/cy; 2326 // return false if the view scroll to the exact position as it is requested. 2327 private boolean setContentScrollTo(int cx, int cy) { 2328 if (mDrawHistory) { 2329 // disallow WebView to change the scroll position as History Picture 2330 // is used in the view system. 2331 // One known case where this is called is that WebCore tries to 2332 // restore the scroll position. As history Picture already uses the 2333 // saved scroll position, it is ok to skip this. 2334 return false; 2335 } 2336 int vx = contentToView(cx); 2337 int vy = contentToView(cy); 2338// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2339// vx + " " + vy + "]"); 2340 pinScrollTo(vx, vy, false, 0); 2341 if (mScrollX != vx || mScrollY != vy) { 2342 return true; 2343 } else { 2344 return false; 2345 } 2346 } 2347 2348 // scale from content to view coordinates, and pin 2349 private void spawnContentScrollTo(int cx, int cy) { 2350 if (mDrawHistory) { 2351 // disallow WebView to change the scroll position as History Picture 2352 // is used in the view system. 2353 return; 2354 } 2355 int vx = contentToView(cx); 2356 int vy = contentToView(cy); 2357 pinScrollTo(vx, vy, true, 0); 2358 } 2359 2360 /** 2361 * These are from webkit, and are in content coordinate system (unzoomed) 2362 */ 2363 private void contentSizeChanged(boolean updateLayout) { 2364 // suppress 0,0 since we usually see real dimensions soon after 2365 // this avoids drawing the prev content in a funny place. If we find a 2366 // way to consolidate these notifications, this check may become 2367 // obsolete 2368 if ((mContentWidth | mContentHeight) == 0) { 2369 return; 2370 } 2371 2372 if (mHeightCanMeasure) { 2373 if (getMeasuredHeight() != contentToView(mContentHeight) 2374 && updateLayout) { 2375 requestLayout(); 2376 } 2377 } else if (mWidthCanMeasure) { 2378 if (getMeasuredWidth() != contentToView(mContentWidth) 2379 && updateLayout) { 2380 requestLayout(); 2381 } 2382 } else { 2383 // If we don't request a layout, try to send our view size to the 2384 // native side to ensure that WebCore has the correct dimensions. 2385 sendViewSizeZoom(); 2386 } 2387 } 2388 2389 /** 2390 * Set the WebViewClient that will receive various notifications and 2391 * requests. This will replace the current handler. 2392 * @param client An implementation of WebViewClient. 2393 */ 2394 public void setWebViewClient(WebViewClient client) { 2395 mCallbackProxy.setWebViewClient(client); 2396 } 2397 2398 /** 2399 * Register the interface to be used when content can not be handled by 2400 * the rendering engine, and should be downloaded instead. This will replace 2401 * the current handler. 2402 * @param listener An implementation of DownloadListener. 2403 */ 2404 public void setDownloadListener(DownloadListener listener) { 2405 mCallbackProxy.setDownloadListener(listener); 2406 } 2407 2408 /** 2409 * Set the chrome handler. This is an implementation of WebChromeClient for 2410 * use in handling Javascript dialogs, favicons, titles, and the progress. 2411 * This will replace the current handler. 2412 * @param client An implementation of WebChromeClient. 2413 */ 2414 public void setWebChromeClient(WebChromeClient client) { 2415 mCallbackProxy.setWebChromeClient(client); 2416 } 2417 2418 /** 2419 * Gets the chrome handler. 2420 * @return the current WebChromeClient instance. 2421 * 2422 * @hide API council approval. 2423 */ 2424 public WebChromeClient getWebChromeClient() { 2425 return mCallbackProxy.getWebChromeClient(); 2426 } 2427 2428 /** 2429 * Set the Picture listener. This is an interface used to receive 2430 * notifications of a new Picture. 2431 * @param listener An implementation of WebView.PictureListener. 2432 */ 2433 public void setPictureListener(PictureListener listener) { 2434 mPictureListener = listener; 2435 } 2436 2437 /** 2438 * {@hide} 2439 */ 2440 /* FIXME: Debug only! Remove for SDK! */ 2441 public void externalRepresentation(Message callback) { 2442 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2443 } 2444 2445 /** 2446 * {@hide} 2447 */ 2448 /* FIXME: Debug only! Remove for SDK! */ 2449 public void documentAsText(Message callback) { 2450 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2451 } 2452 2453 /** 2454 * Use this function to bind an object to Javascript so that the 2455 * methods can be accessed from Javascript. 2456 * <p><strong>IMPORTANT:</strong> 2457 * <ul> 2458 * <li> Using addJavascriptInterface() allows JavaScript to control your 2459 * application. This can be a very useful feature or a dangerous security 2460 * issue. When the HTML in the WebView is untrustworthy (for example, part 2461 * or all of the HTML is provided by some person or process), then an 2462 * attacker could inject HTML that will execute your code and possibly any 2463 * code of the attacker's choosing.<br> 2464 * Do not use addJavascriptInterface() unless all of the HTML in this 2465 * WebView was written by you.</li> 2466 * <li> The Java object that is bound runs in another thread and not in 2467 * the thread that it was constructed in.</li> 2468 * </ul></p> 2469 * @param obj The class instance to bind to Javascript 2470 * @param interfaceName The name to used to expose the class in Javascript 2471 */ 2472 public void addJavascriptInterface(Object obj, String interfaceName) { 2473 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2474 arg.mObject = obj; 2475 arg.mInterfaceName = interfaceName; 2476 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2477 } 2478 2479 /** 2480 * Return the WebSettings object used to control the settings for this 2481 * WebView. 2482 * @return A WebSettings object that can be used to control this WebView's 2483 * settings. 2484 */ 2485 public WebSettings getSettings() { 2486 return mWebViewCore.getSettings(); 2487 } 2488 2489 /** 2490 * Return the list of currently loaded plugins. 2491 * @return The list of currently loaded plugins. 2492 */ 2493 public static synchronized PluginList getPluginList() { 2494 if (sPluginList == null) { 2495 sPluginList = new PluginList(); 2496 } 2497 return sPluginList; 2498 } 2499 2500 /** 2501 * TODO: need to add @Deprecated 2502 */ 2503 public void refreshPlugins(boolean reloadOpenPages) { 2504 PluginManager.getInstance(mContext).refreshPlugins(reloadOpenPages); 2505 } 2506 2507 //------------------------------------------------------------------------- 2508 // Override View methods 2509 //------------------------------------------------------------------------- 2510 2511 @Override 2512 protected void finalize() throws Throwable { 2513 destroy(); 2514 } 2515 2516 @Override 2517 protected void onDraw(Canvas canvas) { 2518 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2519 if (mNativeClass == 0) { 2520 return; 2521 } 2522 if (mWebViewCore.mEndScaleZoom) { 2523 mWebViewCore.mEndScaleZoom = false; 2524 if (mTouchMode >= FIRST_SCROLL_ZOOM 2525 && mTouchMode <= LAST_SCROLL_ZOOM) { 2526 setHorizontalScrollBarEnabled(true); 2527 setVerticalScrollBarEnabled(true); 2528 mTouchMode = TOUCH_DONE_MODE; 2529 } 2530 } 2531 int sc = canvas.save(); 2532 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 2533 scrollZoomDraw(canvas); 2534 } else { 2535 // Update the buttons in the picture, so when we draw the picture 2536 // to the screen, they are in the correct state. 2537 // Tell the native side if user is a) touching the screen, 2538 // b) pressing the trackball down, or c) pressing the enter key 2539 // If the cursor is on a button, we need to draw it in the pressed 2540 // state. 2541 // If mNativeClass is 0, we should not reach here, so we do not 2542 // need to check it again. 2543 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2544 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2545 || mTrackballDown || mGotCenterDown, false); 2546 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2547 } 2548 canvas.restoreToCount(sc); 2549 2550 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2551 invalidate(); 2552 } 2553 } 2554 2555 @Override 2556 public void setLayoutParams(ViewGroup.LayoutParams params) { 2557 if (params.height == LayoutParams.WRAP_CONTENT) { 2558 mWrapContent = true; 2559 } 2560 super.setLayoutParams(params); 2561 } 2562 2563 @Override 2564 public boolean performLongClick() { 2565 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 2566 // Send the click so that the textfield is in focus 2567 // FIXME: When we start respecting changes to the native textfield's 2568 // selection, need to make sure that this does not change it. 2569 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 2570 nativeCursorNodePointer()); 2571 rebuildWebTextView(); 2572 } 2573 if (inEditingMode()) { 2574 return mWebTextView.performLongClick(); 2575 } else { 2576 return super.performLongClick(); 2577 } 2578 } 2579 2580 private void drawCoreAndCursorRing(Canvas canvas, int color, 2581 boolean drawCursorRing) { 2582 if (mDrawHistory) { 2583 canvas.scale(mActualScale, mActualScale); 2584 canvas.drawPicture(mHistoryPicture); 2585 return; 2586 } 2587 2588 boolean animateZoom = mZoomScale != 0; 2589 boolean animateScroll = !mScroller.isFinished() 2590 || mVelocityTracker != null; 2591 if (animateZoom) { 2592 float zoomScale; 2593 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 2594 if (interval < ZOOM_ANIMATION_LENGTH) { 2595 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 2596 zoomScale = 1.0f / (mInvInitialZoomScale 2597 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 2598 invalidate(); 2599 } else { 2600 zoomScale = mZoomScale; 2601 // set mZoomScale to be 0 as we have done animation 2602 mZoomScale = 0; 2603 } 2604 float scale = zoomScale * mInvInitialZoomScale; 2605 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 2606 - mZoomCenterX); 2607 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 2608 * zoomScale)) + mScrollX; 2609 int ty = Math.round(scale * (mInitialScrollY + mZoomCenterY) 2610 - mZoomCenterY); 2611 ty = -pinLoc(ty, getViewHeight(), Math.round(mContentHeight 2612 * zoomScale)) + mScrollY; 2613 canvas.translate(tx, ty); 2614 canvas.scale(zoomScale, zoomScale); 2615 } else { 2616 canvas.scale(mActualScale, mActualScale); 2617 } 2618 2619 mWebViewCore.drawContentPicture(canvas, color, animateZoom, 2620 animateScroll); 2621 2622 if (mNativeClass == 0) return; 2623 if (mShiftIsPressed) { 2624 if (mTouchSelection) { 2625 nativeDrawSelectionRegion(canvas); 2626 } else { 2627 nativeDrawSelection(canvas, mSelectX, mSelectY, 2628 mExtendSelection); 2629 } 2630 } else if (drawCursorRing) { 2631 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 2632 mTouchMode = TOUCH_SHORTPRESS_MODE; 2633 HitTestResult hitTest = getHitTestResult(); 2634 if (hitTest != null && 2635 hitTest.mType != HitTestResult.UNKNOWN_TYPE) { 2636 mPrivateHandler.sendMessageDelayed(mPrivateHandler 2637 .obtainMessage(SWITCH_TO_LONGPRESS), 2638 LONG_PRESS_TIMEOUT); 2639 } 2640 } 2641 nativeDrawCursorRing(canvas); 2642 } 2643 // When the FindDialog is up, only draw the matches if we are not in 2644 // the process of scrolling them into view. 2645 if (mFindIsUp && !animateScroll) { 2646 nativeDrawMatches(canvas); 2647 } 2648 } 2649 2650 private float scrollZoomGridScale(float invScale) { 2651 float griddedInvScale = (int) (invScale * SCROLL_ZOOM_GRID) 2652 / (float) SCROLL_ZOOM_GRID; 2653 return 1.0f / griddedInvScale; 2654 } 2655 2656 private float scrollZoomX(float scale) { 2657 int width = getViewWidth(); 2658 float maxScrollZoomX = mContentWidth * scale - width; 2659 int maxX = mContentWidth - width; 2660 return -(maxScrollZoomX > 0 ? mZoomScrollX * maxScrollZoomX / maxX 2661 : maxScrollZoomX / 2); 2662 } 2663 2664 private float scrollZoomY(float scale) { 2665 int height = getViewHeight(); 2666 float maxScrollZoomY = mContentHeight * scale - height; 2667 int maxY = mContentHeight - height; 2668 return -(maxScrollZoomY > 0 ? mZoomScrollY * maxScrollZoomY / maxY 2669 : maxScrollZoomY / 2); 2670 } 2671 2672 private void drawMagnifyFrame(Canvas canvas, Rect frame, Paint paint) { 2673 final float ADORNMENT_LEN = 16.0f; 2674 float width = frame.width(); 2675 float height = frame.height(); 2676 Path path = new Path(); 2677 path.moveTo(-ADORNMENT_LEN, -ADORNMENT_LEN); 2678 path.lineTo(0, 0); 2679 path.lineTo(width, 0); 2680 path.lineTo(width + ADORNMENT_LEN, -ADORNMENT_LEN); 2681 path.moveTo(-ADORNMENT_LEN, height + ADORNMENT_LEN); 2682 path.lineTo(0, height); 2683 path.lineTo(width, height); 2684 path.lineTo(width + ADORNMENT_LEN, height + ADORNMENT_LEN); 2685 path.moveTo(0, 0); 2686 path.lineTo(0, height); 2687 path.moveTo(width, 0); 2688 path.lineTo(width, height); 2689 path.offset(frame.left, frame.top); 2690 canvas.drawPath(path, paint); 2691 } 2692 2693 // Returns frame surrounding magified portion of screen while 2694 // scroll-zoom is enabled. The frame is also used to center the 2695 // zoom-in zoom-out points at the start and end of the animation. 2696 private Rect scrollZoomFrame(int width, int height, float halfScale) { 2697 Rect scrollFrame = new Rect(); 2698 scrollFrame.set(mZoomScrollX, mZoomScrollY, 2699 mZoomScrollX + width, mZoomScrollY + height); 2700 if (mContentWidth * mZoomScrollLimit < width) { 2701 float scale = zoomFrameScaleX(width, halfScale, 1.0f); 2702 float offsetX = (width * scale - width) * 0.5f; 2703 scrollFrame.left -= offsetX; 2704 scrollFrame.right += offsetX; 2705 } 2706 if (mContentHeight * mZoomScrollLimit < height) { 2707 float scale = zoomFrameScaleY(height, halfScale, 1.0f); 2708 float offsetY = (height * scale - height) * 0.5f; 2709 scrollFrame.top -= offsetY; 2710 scrollFrame.bottom += offsetY; 2711 } 2712 return scrollFrame; 2713 } 2714 2715 private float zoomFrameScaleX(int width, float halfScale, float noScale) { 2716 // mContentWidth > width > mContentWidth * mZoomScrollLimit 2717 if (mContentWidth <= width) { 2718 return halfScale; 2719 } 2720 float part = (width - mContentWidth * mZoomScrollLimit) 2721 / (width * (1 - mZoomScrollLimit)); 2722 return halfScale * part + noScale * (1.0f - part); 2723 } 2724 2725 private float zoomFrameScaleY(int height, float halfScale, float noScale) { 2726 if (mContentHeight <= height) { 2727 return halfScale; 2728 } 2729 float part = (height - mContentHeight * mZoomScrollLimit) 2730 / (height * (1 - mZoomScrollLimit)); 2731 return halfScale * part + noScale * (1.0f - part); 2732 } 2733 2734 private float scrollZoomMagScale(float invScale) { 2735 return (invScale * 2 + mInvActualScale) / 3; 2736 } 2737 2738 private void scrollZoomDraw(Canvas canvas) { 2739 float invScale = mZoomScrollInvLimit; 2740 int elapsed = 0; 2741 if (mTouchMode != SCROLL_ZOOM_OUT) { 2742 elapsed = (int) Math.min(System.currentTimeMillis() 2743 - mZoomScrollStart, SCROLL_ZOOM_DURATION); 2744 float transitionScale = (mZoomScrollInvLimit - mInvActualScale) 2745 * elapsed / SCROLL_ZOOM_DURATION; 2746 if (mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 2747 invScale = mInvActualScale + transitionScale; 2748 } else { /* if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) */ 2749 invScale = mZoomScrollInvLimit - transitionScale; 2750 } 2751 } 2752 float scale = scrollZoomGridScale(invScale); 2753 invScale = 1.0f / scale; 2754 int width = getViewWidth(); 2755 int height = getViewHeight(); 2756 float halfScale = scrollZoomMagScale(invScale); 2757 Rect scrollFrame = scrollZoomFrame(width, height, halfScale); 2758 if (elapsed == SCROLL_ZOOM_DURATION) { 2759 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 2760 setHorizontalScrollBarEnabled(true); 2761 setVerticalScrollBarEnabled(true); 2762 rebuildWebTextView(); 2763 scrollTo((int) (scrollFrame.centerX() * mActualScale) 2764 - (width >> 1), (int) (scrollFrame.centerY() 2765 * mActualScale) - (height >> 1)); 2766 mTouchMode = TOUCH_DONE_MODE; 2767 // Show all the child views once we are done. 2768 mViewManager.showAll(); 2769 } else { 2770 mTouchMode = SCROLL_ZOOM_OUT; 2771 } 2772 } 2773 float newX = scrollZoomX(scale); 2774 float newY = scrollZoomY(scale); 2775 if (DebugFlags.WEB_VIEW) { 2776 Log.v(LOGTAG, "scrollZoomDraw scale=" + scale + " + (" + newX 2777 + ", " + newY + ") mZoomScroll=(" + mZoomScrollX + ", " 2778 + mZoomScrollY + ")" + " invScale=" + invScale + " scale=" 2779 + scale); 2780 } 2781 canvas.translate(newX, newY); 2782 canvas.scale(scale, scale); 2783 boolean animating = mTouchMode != SCROLL_ZOOM_OUT; 2784 if (mDrawHistory) { 2785 int sc = canvas.save(Canvas.CLIP_SAVE_FLAG); 2786 Rect clip = new Rect(0, 0, mHistoryPicture.getWidth(), 2787 mHistoryPicture.getHeight()); 2788 canvas.clipRect(clip, Region.Op.DIFFERENCE); 2789 canvas.drawColor(mBackgroundColor); 2790 canvas.restoreToCount(sc); 2791 canvas.drawPicture(mHistoryPicture); 2792 } else { 2793 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2794 animating, true); 2795 } 2796 if (mTouchMode == TOUCH_DONE_MODE) { 2797 return; 2798 } 2799 Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); 2800 paint.setStyle(Paint.Style.STROKE); 2801 paint.setStrokeWidth(30.0f); 2802 paint.setARGB(0x50, 0, 0, 0); 2803 int maxX = mContentWidth - width; 2804 int maxY = mContentHeight - height; 2805 if (true) { // experiment: draw hint to place finger off magnify area 2806 drawMagnifyFrame(canvas, scrollFrame, paint); 2807 } else { 2808 canvas.drawRect(scrollFrame, paint); 2809 } 2810 int sc = canvas.save(); 2811 canvas.clipRect(scrollFrame); 2812 float halfX = (float) mZoomScrollX / maxX; 2813 if (mContentWidth * mZoomScrollLimit < width) { 2814 halfX = zoomFrameScaleX(width, 0.5f, halfX); 2815 } 2816 float halfY = (float) mZoomScrollY / maxY; 2817 if (mContentHeight * mZoomScrollLimit < height) { 2818 halfY = zoomFrameScaleY(height, 0.5f, halfY); 2819 } 2820 canvas.scale(halfScale, halfScale, mZoomScrollX + width * halfX 2821 , mZoomScrollY + height * halfY); 2822 if (DebugFlags.WEB_VIEW) { 2823 Log.v(LOGTAG, "scrollZoomDraw halfScale=" + halfScale + " w/h=(" 2824 + width + ", " + height + ") half=(" + halfX + ", " 2825 + halfY + ")"); 2826 } 2827 if (mDrawHistory) { 2828 canvas.drawPicture(mHistoryPicture); 2829 } else { 2830 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2831 animating, false); 2832 } 2833 canvas.restoreToCount(sc); 2834 if (mTouchMode != SCROLL_ZOOM_OUT) { 2835 invalidate(); 2836 } 2837 } 2838 2839 private void zoomScrollTap(float x, float y) { 2840 float scale = scrollZoomGridScale(mZoomScrollInvLimit); 2841 float left = scrollZoomX(scale); 2842 float top = scrollZoomY(scale); 2843 int width = getViewWidth(); 2844 int height = getViewHeight(); 2845 x -= width * scale / 2; 2846 y -= height * scale / 2; 2847 mZoomScrollX = Math.min(mContentWidth - width 2848 , Math.max(0, (int) ((x - left) / scale))); 2849 mZoomScrollY = Math.min(mContentHeight - height 2850 , Math.max(0, (int) ((y - top) / scale))); 2851 if (DebugFlags.WEB_VIEW) { 2852 Log.v(LOGTAG, "zoomScrollTap scale=" + scale + " + (" + left 2853 + ", " + top + ") mZoomScroll=(" + mZoomScrollX + ", " 2854 + mZoomScrollY + ")" + " x=" + x + " y=" + y); 2855 } 2856 } 2857 2858 /** 2859 * @hide 2860 */ 2861 public boolean canZoomScrollOut() { 2862 if (mContentWidth == 0 || mContentHeight == 0) { 2863 return false; 2864 } 2865 int width = getViewWidth(); 2866 int height = getViewHeight(); 2867 float x = (float) width / (float) mContentWidth; 2868 float y = (float) height / (float) mContentHeight; 2869 mZoomScrollLimit = Math.max(DEFAULT_MIN_ZOOM_SCALE, Math.min(x, y)); 2870 mZoomScrollInvLimit = 1.0f / mZoomScrollLimit; 2871 if (DebugFlags.WEB_VIEW) { 2872 Log.v(LOGTAG, "canZoomScrollOut" 2873 + " mInvActualScale=" + mInvActualScale 2874 + " mZoomScrollLimit=" + mZoomScrollLimit 2875 + " mZoomScrollInvLimit=" + mZoomScrollInvLimit 2876 + " mContentWidth=" + mContentWidth 2877 + " mContentHeight=" + mContentHeight 2878 ); 2879 } 2880 // don't zoom out unless magnify area is at least half as wide 2881 // or tall as content 2882 float limit = mZoomScrollLimit * 2; 2883 return mContentWidth >= width * limit 2884 || mContentHeight >= height * limit; 2885 } 2886 2887 private void startZoomScrollOut() { 2888 setHorizontalScrollBarEnabled(false); 2889 setVerticalScrollBarEnabled(false); 2890 if (getSettings().getBuiltInZoomControls()) { 2891 if (mZoomButtonsController.isVisible()) { 2892 mZoomButtonsController.setVisible(false); 2893 } 2894 } else { 2895 if (mZoomControlRunnable != null) { 2896 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 2897 } 2898 if (mZoomControls != null) { 2899 mZoomControls.hide(); 2900 } 2901 } 2902 int width = getViewWidth(); 2903 int height = getViewHeight(); 2904 int halfW = width >> 1; 2905 mLastTouchX = halfW; 2906 int halfH = height >> 1; 2907 mLastTouchY = halfH; 2908 mScroller.abortAnimation(); 2909 mZoomScrollStart = System.currentTimeMillis(); 2910 Rect zoomFrame = scrollZoomFrame(width, height 2911 , scrollZoomMagScale(mZoomScrollInvLimit)); 2912 mZoomScrollX = Math.max(0, (int) ((mScrollX + halfW) * mInvActualScale) 2913 - (zoomFrame.width() >> 1)); 2914 mZoomScrollY = Math.max(0, (int) ((mScrollY + halfH) * mInvActualScale) 2915 - (zoomFrame.height() >> 1)); 2916 scrollTo(0, 0); // triggers inval, starts animation 2917 clearTextEntry(); 2918 if (DebugFlags.WEB_VIEW) { 2919 Log.v(LOGTAG, "startZoomScrollOut mZoomScroll=(" 2920 + mZoomScrollX + ", " + mZoomScrollY +")"); 2921 } 2922 } 2923 2924 /** 2925 * @hide 2926 */ 2927 public void zoomScrollOut() { 2928 if (canZoomScrollOut() == false) { 2929 mTouchMode = TOUCH_DONE_MODE; 2930 return; 2931 } 2932 // Hide the child views while in this mode. 2933 mViewManager.hideAll(); 2934 startZoomScrollOut(); 2935 mTouchMode = SCROLL_ZOOM_ANIMATION_OUT; 2936 invalidate(); 2937 } 2938 2939 private void moveZoomScrollWindow(float x, float y) { 2940 if (Math.abs(x - mLastZoomScrollRawX) < 1.5f 2941 && Math.abs(y - mLastZoomScrollRawY) < 1.5f) { 2942 return; 2943 } 2944 mLastZoomScrollRawX = x; 2945 mLastZoomScrollRawY = y; 2946 int oldX = mZoomScrollX; 2947 int oldY = mZoomScrollY; 2948 int width = getViewWidth(); 2949 int height = getViewHeight(); 2950 int maxZoomX = mContentWidth - width; 2951 if (maxZoomX > 0) { 2952 int maxScreenX = width - (int) Math.ceil(width 2953 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 2954 if (DebugFlags.WEB_VIEW) { 2955 Log.v(LOGTAG, "moveZoomScrollWindow-X" 2956 + " maxScreenX=" + maxScreenX + " width=" + width 2957 + " mZoomScrollLimit=" + mZoomScrollLimit + " x=" + x); 2958 } 2959 x += maxScreenX * mLastScrollX / maxZoomX - mLastTouchX; 2960 x *= Math.max(maxZoomX / maxScreenX, mZoomScrollInvLimit); 2961 mZoomScrollX = Math.max(0, Math.min(maxZoomX, (int) x)); 2962 } 2963 int maxZoomY = mContentHeight - height; 2964 if (maxZoomY > 0) { 2965 int maxScreenY = height - (int) Math.ceil(height 2966 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 2967 if (DebugFlags.WEB_VIEW) { 2968 Log.v(LOGTAG, "moveZoomScrollWindow-Y" 2969 + " maxScreenY=" + maxScreenY + " height=" + height 2970 + " mZoomScrollLimit=" + mZoomScrollLimit + " y=" + y); 2971 } 2972 y += maxScreenY * mLastScrollY / maxZoomY - mLastTouchY; 2973 y *= Math.max(maxZoomY / maxScreenY, mZoomScrollInvLimit); 2974 mZoomScrollY = Math.max(0, Math.min(maxZoomY, (int) y)); 2975 } 2976 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 2977 invalidate(); 2978 } 2979 if (DebugFlags.WEB_VIEW) { 2980 Log.v(LOGTAG, "moveZoomScrollWindow" 2981 + " scrollTo=(" + mZoomScrollX + ", " + mZoomScrollY + ")" 2982 + " mLastTouch=(" + mLastTouchX + ", " + mLastTouchY + ")" 2983 + " maxZoom=(" + maxZoomX + ", " + maxZoomY + ")" 2984 + " last=("+mLastScrollX+", "+mLastScrollY+")" 2985 + " x=" + x + " y=" + y); 2986 } 2987 } 2988 2989 private void setZoomScrollIn() { 2990 mZoomScrollStart = System.currentTimeMillis(); 2991 } 2992 2993 private float mZoomScrollLimit; 2994 private float mZoomScrollInvLimit; 2995 private int mLastScrollX; 2996 private int mLastScrollY; 2997 private long mZoomScrollStart; 2998 private int mZoomScrollX; 2999 private int mZoomScrollY; 3000 private float mLastZoomScrollRawX = -1000.0f; 3001 private float mLastZoomScrollRawY = -1000.0f; 3002 // The zoomed scale varies from 1.0 to DEFAULT_MIN_ZOOM_SCALE == 0.25. 3003 // The zoom animation duration SCROLL_ZOOM_DURATION == 0.5. 3004 // Two pressures compete for gridding; a high frame rate (e.g. 20 fps) 3005 // and minimizing font cache allocations (fewer frames is better). 3006 // A SCROLL_ZOOM_GRID of 6 permits about 20 zoom levels over 0.5 seconds: 3007 // the inverse of: 1.0, 1.16, 1.33, 1.5, 1.67, 1.84, 2.0, etc. to 4.0 3008 private static final int SCROLL_ZOOM_GRID = 6; 3009 private static final int SCROLL_ZOOM_DURATION = 500; 3010 // Make it easier to get to the bottom of a document by reserving a 32 3011 // pixel buffer, for when the starting drag is a bit below the bottom of 3012 // the magnify frame. 3013 private static final int SCROLL_ZOOM_FINGER_BUFFER = 32; 3014 3015 // draw history 3016 private boolean mDrawHistory = false; 3017 private Picture mHistoryPicture = null; 3018 private int mHistoryWidth = 0; 3019 private int mHistoryHeight = 0; 3020 3021 // Only check the flag, can be called from WebCore thread 3022 boolean drawHistory() { 3023 return mDrawHistory; 3024 } 3025 3026 // Should only be called in UI thread 3027 void switchOutDrawHistory() { 3028 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3029 if (mDrawHistory && mWebViewCore.pictureReady()) { 3030 mDrawHistory = false; 3031 invalidate(); 3032 int oldScrollX = mScrollX; 3033 int oldScrollY = mScrollY; 3034 mScrollX = pinLocX(mScrollX); 3035 mScrollY = pinLocY(mScrollY); 3036 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3037 mUserScroll = false; 3038 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3039 oldScrollY); 3040 } 3041 sendOurVisibleRect(); 3042 } 3043 } 3044 3045 WebViewCore.CursorData cursorData() { 3046 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3047 result.mMoveGeneration = nativeMoveGeneration(); 3048 result.mFrame = nativeCursorFramePointer(); 3049 Point position = nativeCursorPosition(); 3050 result.mX = position.x; 3051 result.mY = position.y; 3052 return result; 3053 } 3054 3055 /** 3056 * Delete text from start to end in the focused textfield. If there is no 3057 * focus, or if start == end, silently fail. If start and end are out of 3058 * order, swap them. 3059 * @param start Beginning of selection to delete. 3060 * @param end End of selection to delete. 3061 */ 3062 /* package */ void deleteSelection(int start, int end) { 3063 mTextGeneration++; 3064 WebViewCore.DeleteSelectionData data 3065 = new WebViewCore.DeleteSelectionData(); 3066 data.mStart = start; 3067 data.mEnd = end; 3068 data.mTextGeneration = mTextGeneration; 3069 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, data); 3070 } 3071 3072 /** 3073 * Set the selection to (start, end) in the focused textfield. If start and 3074 * end are out of order, swap them. 3075 * @param start Beginning of selection. 3076 * @param end End of selection. 3077 */ 3078 /* package */ void setSelection(int start, int end) { 3079 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3080 } 3081 3082 // Called by JNI when a touch event puts a textfield into focus. 3083 private void displaySoftKeyboard(boolean isTextView) { 3084 InputMethodManager imm = (InputMethodManager) 3085 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3086 3087 if (isTextView) { 3088 imm.showSoftInput(mWebTextView, 0); 3089 // Now we need to fake a touch event to place the cursor where the 3090 // user touched. 3091 AbsoluteLayout.LayoutParams lp = (AbsoluteLayout.LayoutParams) 3092 mWebTextView.getLayoutParams(); 3093 if (lp != null) { 3094 // Take the last touch and adjust for the location of the 3095 // WebTextView. 3096 float x = mLastTouchX + (float) (mScrollX - lp.x); 3097 float y = mLastTouchY + (float) (mScrollY - lp.y); 3098 mWebTextView.fakeTouchEvent(x, y); 3099 } 3100 if (mInZoomOverview) { 3101 // if in zoom overview mode, call doDoubleTap() to bring it back 3102 // to normal mode so that user can enter text. 3103 doDoubleTap(); 3104 } 3105 } 3106 else { // used by plugins 3107 imm.showSoftInput(this, 0); 3108 } 3109 } 3110 3111 // Called by WebKit to instruct the UI to hide the keyboard 3112 private void hideSoftKeyboard() { 3113 InputMethodManager imm = (InputMethodManager) 3114 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3115 3116 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3117 } 3118 3119 /* 3120 * This method checks the current focus and cursor and potentially rebuilds 3121 * mWebTextView to have the appropriate properties, such as password, 3122 * multiline, and what text it contains. It also removes it if necessary. 3123 */ 3124 /* package */ void rebuildWebTextView() { 3125 // If the WebView does not have focus, do nothing until it gains focus. 3126 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus()) 3127 || (mTouchMode >= FIRST_SCROLL_ZOOM 3128 && mTouchMode <= LAST_SCROLL_ZOOM)) { 3129 return; 3130 } 3131 boolean alreadyThere = inEditingMode(); 3132 // inEditingMode can only return true if mWebTextView is non-null, 3133 // so we can safely call remove() if (alreadyThere) 3134 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3135 if (alreadyThere) { 3136 mWebTextView.remove(); 3137 } 3138 return; 3139 } 3140 // At this point, we know we have found an input field, so go ahead 3141 // and create the WebTextView if necessary. 3142 if (mWebTextView == null) { 3143 mWebTextView = new WebTextView(mContext, WebView.this); 3144 // Initialize our generation number. 3145 mTextGeneration = 0; 3146 } 3147 mWebTextView.setTextSize(contentToView(nativeFocusCandidateTextSize())); 3148 Rect visibleRect = new Rect(); 3149 calcOurContentVisibleRect(visibleRect); 3150 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3151 // should be in content coordinates. 3152 Rect bounds = nativeFocusCandidateNodeBounds(); 3153 if (!Rect.intersects(bounds, visibleRect)) { 3154 mWebTextView.bringIntoView(); 3155 } 3156 String text = nativeFocusCandidateText(); 3157 int nodePointer = nativeFocusCandidatePointer(); 3158 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3159 // It is possible that we have the same textfield, but it has moved, 3160 // i.e. In the case of opening/closing the screen. 3161 // In that case, we need to set the dimensions, but not the other 3162 // aspects. 3163 // We also need to restore the selection, which gets wrecked by 3164 // calling setTextEntryRect. 3165 Spannable spannable = (Spannable) mWebTextView.getText(); 3166 int start = Selection.getSelectionStart(spannable); 3167 int end = Selection.getSelectionEnd(spannable); 3168 // If the text has been changed by webkit, update it. However, if 3169 // there has been more UI text input, ignore it. We will receive 3170 // another update when that text is recognized. 3171 if (text != null && !text.equals(spannable.toString()) 3172 && nativeTextGeneration() == mTextGeneration) { 3173 mWebTextView.setTextAndKeepSelection(text); 3174 } else { 3175 Selection.setSelection(spannable, start, end); 3176 } 3177 } else { 3178 Rect vBox = contentToView(bounds); 3179 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3180 vBox.height()); 3181 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3182 Gravity.RIGHT : Gravity.NO_GRAVITY); 3183 // this needs to be called before update adapter thread starts to 3184 // ensure the mWebTextView has the same node pointer 3185 mWebTextView.setNodePointer(nodePointer); 3186 int maxLength = -1; 3187 boolean isTextField = nativeFocusCandidateIsTextField(); 3188 if (isTextField) { 3189 maxLength = nativeFocusCandidateMaxLength(); 3190 String name = nativeFocusCandidateName(); 3191 if (mWebViewCore.getSettings().getSaveFormData() 3192 && name != null) { 3193 Message update = mPrivateHandler.obtainMessage( 3194 REQUEST_FORM_DATA, nodePointer); 3195 RequestFormData updater = new RequestFormData(name, 3196 getUrl(), update); 3197 Thread t = new Thread(updater); 3198 t.start(); 3199 } 3200 } 3201 mWebTextView.setMaxLength(maxLength); 3202 AutoCompleteAdapter adapter = null; 3203 mWebTextView.setAdapterCustom(adapter); 3204 mWebTextView.setSingleLine(isTextField); 3205 mWebTextView.setInPassword(nativeFocusCandidateIsPassword()); 3206 if (null == text) { 3207 mWebTextView.setText("", 0, 0); 3208 if (DebugFlags.WEB_VIEW) { 3209 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3210 } 3211 } else { 3212 // Change to true to enable the old style behavior, where 3213 // entering a textfield/textarea always set the selection to the 3214 // whole field. This was desirable for the case where the user 3215 // intends to scroll past the field using the trackball. 3216 // However, it causes a problem when replying to emails - the 3217 // user expects the cursor to be at the beginning of the 3218 // textarea. Testing out a new behavior, where textfields set 3219 // selection at the end, and textareas at the beginning. 3220 if (false) { 3221 mWebTextView.setText(text, 0, text.length()); 3222 } else if (isTextField) { 3223 int length = text.length(); 3224 mWebTextView.setText(text, length, length); 3225 if (DebugFlags.WEB_VIEW) { 3226 Log.v(LOGTAG, "rebuildWebTextView length=" + length); 3227 } 3228 } else { 3229 mWebTextView.setText(text, 0, 0); 3230 if (DebugFlags.WEB_VIEW) { 3231 Log.v(LOGTAG, "rebuildWebTextView !isTextField"); 3232 } 3233 } 3234 } 3235 mWebTextView.requestFocus(); 3236 } 3237 } 3238 3239 /* 3240 * This class requests an Adapter for the WebTextView which shows past 3241 * entries stored in the database. It is a Runnable so that it can be done 3242 * in its own thread, without slowing down the UI. 3243 */ 3244 private class RequestFormData implements Runnable { 3245 private String mName; 3246 private String mUrl; 3247 private Message mUpdateMessage; 3248 3249 public RequestFormData(String name, String url, Message msg) { 3250 mName = name; 3251 mUrl = url; 3252 mUpdateMessage = msg; 3253 } 3254 3255 public void run() { 3256 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3257 if (pastEntries.size() > 0) { 3258 AutoCompleteAdapter adapter = new 3259 AutoCompleteAdapter(mContext, pastEntries); 3260 mUpdateMessage.obj = adapter; 3261 mUpdateMessage.sendToTarget(); 3262 } 3263 } 3264 } 3265 3266 // This is used to determine long press with the center key. Does not 3267 // affect long press with the trackball/touch. 3268 private boolean mGotCenterDown = false; 3269 3270 @Override 3271 public boolean onKeyDown(int keyCode, KeyEvent event) { 3272 if (DebugFlags.WEB_VIEW) { 3273 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3274 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3275 } 3276 3277 if (mNativeClass == 0) { 3278 return false; 3279 } 3280 3281 // do this hack up front, so it always works, regardless of touch-mode 3282 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3283 mAutoRedraw = !mAutoRedraw; 3284 if (mAutoRedraw) { 3285 invalidate(); 3286 } 3287 return true; 3288 } 3289 3290 // Bubble up the key event if 3291 // 1. it is a system key; or 3292 // 2. the host application wants to handle it; or 3293 // 3. webview is in scroll-zoom state; 3294 if (event.isSystem() 3295 || mCallbackProxy.uiOverrideKeyEvent(event) 3296 || (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM)) { 3297 return false; 3298 } 3299 3300 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3301 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3302 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3303 mExtendSelection = false; 3304 mShiftIsPressed = true; 3305 if (nativeHasCursorNode()) { 3306 Rect rect = nativeCursorNodeBounds(); 3307 mSelectX = contentToView(rect.left); 3308 mSelectY = contentToView(rect.top); 3309 } else { 3310 mSelectX = mScrollX + (int) mLastTouchX; 3311 mSelectY = mScrollY + (int) mLastTouchY; 3312 } 3313 nativeHideCursor(); 3314 } 3315 3316 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3317 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3318 // always handle the navigation keys in the UI thread 3319 switchOutDrawHistory(); 3320 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3321 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3322 return true; 3323 } 3324 // Bubble up the key event as WebView doesn't handle it 3325 return false; 3326 } 3327 3328 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3329 switchOutDrawHistory(); 3330 if (event.getRepeatCount() == 0) { 3331 mGotCenterDown = true; 3332 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3333 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3334 // Already checked mNativeClass, so we do not need to check it 3335 // again. 3336 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3337 return true; 3338 } 3339 // Bubble up the key event as WebView doesn't handle it 3340 return false; 3341 } 3342 3343 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3344 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3345 // turn off copy select if a shift-key combo is pressed 3346 mExtendSelection = mShiftIsPressed = false; 3347 if (mTouchMode == TOUCH_SELECT_MODE) { 3348 mTouchMode = TOUCH_INIT_MODE; 3349 } 3350 } 3351 3352 if (getSettings().getNavDump()) { 3353 switch (keyCode) { 3354 case KeyEvent.KEYCODE_4: 3355 // "/data/data/com.android.browser/displayTree.txt" 3356 nativeDumpDisplayTree(getUrl()); 3357 break; 3358 case KeyEvent.KEYCODE_5: 3359 case KeyEvent.KEYCODE_6: 3360 // 5: dump the dom tree to the file 3361 // "/data/data/com.android.browser/domTree.txt" 3362 // 6: dump the dom tree to the adb log 3363 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, 3364 (keyCode == KeyEvent.KEYCODE_5) ? 1 : 0, 0); 3365 break; 3366 case KeyEvent.KEYCODE_7: 3367 case KeyEvent.KEYCODE_8: 3368 // 7: dump the render tree to the file 3369 // "/data/data/com.android.browser/renderTree.txt" 3370 // 8: dump the render tree to the adb log 3371 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, 3372 (keyCode == KeyEvent.KEYCODE_7) ? 1 : 0, 0); 3373 break; 3374 case KeyEvent.KEYCODE_9: 3375 nativeInstrumentReport(); 3376 return true; 3377 } 3378 } 3379 3380 if (nativeCursorIsPlugin()) { 3381 nativeUpdatePluginReceivesEvents(); 3382 invalidate(); 3383 } else if (nativeCursorIsTextInput()) { 3384 // This message will put the node in focus, for the DOM's notion 3385 // of focus, and make the focuscontroller active 3386 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3387 nativeCursorNodePointer()); 3388 // This will bring up the WebTextView and put it in focus, for 3389 // our view system's notion of focus 3390 rebuildWebTextView(); 3391 // Now we need to pass the event to it 3392 return mWebTextView.onKeyDown(keyCode, event); 3393 } else if (nativeHasFocusNode()) { 3394 // In this case, the cursor is not on a text input, but the focus 3395 // might be. Check it, and if so, hand over to the WebTextView. 3396 rebuildWebTextView(); 3397 if (inEditingMode()) { 3398 return mWebTextView.onKeyDown(keyCode, event); 3399 } 3400 } 3401 3402 // TODO: should we pass all the keys to DOM or check the meta tag 3403 if (nativeCursorWantsKeyEvents() || true) { 3404 // pass the key to DOM 3405 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3406 // return true as DOM handles the key 3407 return true; 3408 } 3409 3410 // Bubble up the key event as WebView doesn't handle it 3411 return false; 3412 } 3413 3414 @Override 3415 public boolean onKeyUp(int keyCode, KeyEvent event) { 3416 if (DebugFlags.WEB_VIEW) { 3417 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3418 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3419 } 3420 3421 if (mNativeClass == 0) { 3422 return false; 3423 } 3424 3425 // special CALL handling when cursor node's href is "tel:XXX" 3426 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3427 String text = nativeCursorText(); 3428 if (!nativeCursorIsTextInput() && text != null 3429 && text.startsWith(SCHEME_TEL)) { 3430 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3431 getContext().startActivity(intent); 3432 return true; 3433 } 3434 } 3435 3436 // Bubble up the key event if 3437 // 1. it is a system key; or 3438 // 2. the host application wants to handle it; 3439 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3440 return false; 3441 } 3442 3443 // special handling in scroll_zoom state 3444 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 3445 if (KeyEvent.KEYCODE_DPAD_CENTER == keyCode 3446 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN) { 3447 setZoomScrollIn(); 3448 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 3449 invalidate(); 3450 return true; 3451 } 3452 return false; 3453 } 3454 3455 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3456 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3457 if (commitCopy()) { 3458 return true; 3459 } 3460 } 3461 3462 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3463 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3464 // always handle the navigation keys in the UI thread 3465 // Bubble up the key event as WebView doesn't handle it 3466 return false; 3467 } 3468 3469 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3470 // remove the long press message first 3471 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3472 mGotCenterDown = false; 3473 3474 if (mShiftIsPressed) { 3475 return false; 3476 } 3477 if (getSettings().supportZoom() 3478 && mTouchMode == TOUCH_DOUBLECLICK_MODE) { 3479 zoomScrollOut(); 3480 } else { 3481 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3482 .obtainMessage(SWITCH_TO_CLICK), TAP_TIMEOUT); 3483 if (DebugFlags.WEB_VIEW) { 3484 Log.v(LOGTAG, "TOUCH_DOUBLECLICK_MODE"); 3485 } 3486 mTouchMode = TOUCH_DOUBLECLICK_MODE; 3487 } 3488 return true; 3489 } 3490 3491 // TODO: should we pass all the keys to DOM or check the meta tag 3492 if (nativeCursorWantsKeyEvents() || true) { 3493 // pass the key to DOM 3494 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3495 // return true as DOM handles the key 3496 return true; 3497 } 3498 3499 // Bubble up the key event as WebView doesn't handle it 3500 return false; 3501 } 3502 3503 /** 3504 * @hide 3505 */ 3506 public void emulateShiftHeld() { 3507 mExtendSelection = false; 3508 mShiftIsPressed = true; 3509 nativeHideCursor(); 3510 } 3511 3512 private boolean commitCopy() { 3513 boolean copiedSomething = false; 3514 if (mExtendSelection) { 3515 // copy region so core operates on copy without touching orig. 3516 Region selection = new Region(nativeGetSelection()); 3517 if (selection.isEmpty() == false) { 3518 Toast.makeText(mContext 3519 , com.android.internal.R.string.text_copied 3520 , Toast.LENGTH_SHORT).show(); 3521 mWebViewCore.sendMessage(EventHub.GET_SELECTION, selection); 3522 copiedSomething = true; 3523 } 3524 mExtendSelection = false; 3525 } 3526 mShiftIsPressed = false; 3527 if (mTouchMode == TOUCH_SELECT_MODE) { 3528 mTouchMode = TOUCH_INIT_MODE; 3529 } 3530 return copiedSomething; 3531 } 3532 3533 // Set this as a hierarchy change listener so we can know when this view 3534 // is removed and still have access to our parent. 3535 @Override 3536 protected void onAttachedToWindow() { 3537 super.onAttachedToWindow(); 3538 ViewParent parent = getParent(); 3539 if (parent instanceof ViewGroup) { 3540 ViewGroup p = (ViewGroup) parent; 3541 p.setOnHierarchyChangeListener(this); 3542 } 3543 } 3544 3545 @Override 3546 protected void onDetachedFromWindow() { 3547 super.onDetachedFromWindow(); 3548 ViewParent parent = getParent(); 3549 if (parent instanceof ViewGroup) { 3550 ViewGroup p = (ViewGroup) parent; 3551 p.setOnHierarchyChangeListener(null); 3552 } 3553 3554 // Clean up the zoom controller 3555 mZoomButtonsController.setVisible(false); 3556 } 3557 3558 // Implementation for OnHierarchyChangeListener 3559 public void onChildViewAdded(View parent, View child) {} 3560 3561 public void onChildViewRemoved(View p, View child) { 3562 if (child == this) { 3563 clearTextEntry(); 3564 } 3565 } 3566 3567 /** 3568 * @deprecated WebView should not have implemented 3569 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3570 * does nothing now. 3571 */ 3572 @Deprecated 3573 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3574 } 3575 3576 // To avoid drawing the cursor ring, and remove the TextView when our window 3577 // loses focus. 3578 @Override 3579 public void onWindowFocusChanged(boolean hasWindowFocus) { 3580 if (hasWindowFocus) { 3581 if (hasFocus()) { 3582 // If our window regained focus, and we have focus, then begin 3583 // drawing the cursor ring 3584 mDrawCursorRing = true; 3585 if (mNativeClass != 0) { 3586 nativeRecordButtons(true, false, true); 3587 if (inEditingMode()) { 3588 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3589 } 3590 } 3591 } else { 3592 // If our window gained focus, but we do not have it, do not 3593 // draw the cursor ring. 3594 mDrawCursorRing = false; 3595 // We do not call nativeRecordButtons here because we assume 3596 // that when we lost focus, or window focus, it got called with 3597 // false for the first parameter 3598 } 3599 } else { 3600 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3601 /* 3602 * The zoom controls come in their own window, so our window 3603 * loses focus. Our policy is to not draw the cursor ring if 3604 * our window is not focused, but this is an exception since 3605 * the user can still navigate the web page with the zoom 3606 * controls showing. 3607 */ 3608 // If our window has lost focus, stop drawing the cursor ring 3609 mDrawCursorRing = false; 3610 } 3611 mGotKeyDown = false; 3612 mShiftIsPressed = false; 3613 if (mNativeClass != 0) { 3614 nativeRecordButtons(false, false, true); 3615 } 3616 setFocusControllerInactive(); 3617 } 3618 invalidate(); 3619 super.onWindowFocusChanged(hasWindowFocus); 3620 } 3621 3622 /* 3623 * Pass a message to WebCore Thread, telling the WebCore::Page's 3624 * FocusController to be "inactive" so that it will 3625 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3626 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3627 */ 3628 /* package */ void setFocusControllerInactive() { 3629 // Do not need to also check whether mWebViewCore is null, because 3630 // mNativeClass is only set if mWebViewCore is non null 3631 if (mNativeClass == 0) return; 3632 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3633 } 3634 3635 @Override 3636 protected void onFocusChanged(boolean focused, int direction, 3637 Rect previouslyFocusedRect) { 3638 if (DebugFlags.WEB_VIEW) { 3639 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3640 } 3641 if (focused) { 3642 // When we regain focus, if we have window focus, resume drawing 3643 // the cursor ring 3644 if (hasWindowFocus()) { 3645 mDrawCursorRing = true; 3646 if (mNativeClass != 0) { 3647 nativeRecordButtons(true, false, true); 3648 } 3649 //} else { 3650 // The WebView has gained focus while we do not have 3651 // windowfocus. When our window lost focus, we should have 3652 // called nativeRecordButtons(false...) 3653 } 3654 } else { 3655 // When we lost focus, unless focus went to the TextView (which is 3656 // true if we are in editing mode), stop drawing the cursor ring. 3657 if (!inEditingMode()) { 3658 mDrawCursorRing = false; 3659 if (mNativeClass != 0) { 3660 nativeRecordButtons(false, false, true); 3661 } 3662 setFocusControllerInactive(); 3663 } 3664 mGotKeyDown = false; 3665 } 3666 3667 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3668 } 3669 3670 @Override 3671 protected void onSizeChanged(int w, int h, int ow, int oh) { 3672 super.onSizeChanged(w, h, ow, oh); 3673 // Center zooming to the center of the screen. 3674 mZoomCenterX = getViewWidth() * .5f; 3675 mZoomCenterY = getViewHeight() * .5f; 3676 3677 // update mMinZoomScale if the minimum zoom scale is not fixed 3678 if (!mMinZoomScaleFixed) { 3679 mMinZoomScale = (float) getViewWidth() 3680 / Math.max(ZOOM_OUT_WIDTH, mDrawHistory ? mHistoryPicture 3681 .getWidth() : (mZoomOverviewWidth > 0 ? 3682 mZoomOverviewWidth : mContentWidth)); 3683 } 3684 3685 // we always force, in case our height changed, in which case we still 3686 // want to send the notification over to webkit 3687 setNewZoomScale(mActualScale, true); 3688 } 3689 3690 @Override 3691 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3692 super.onScrollChanged(l, t, oldl, oldt); 3693 3694 sendOurVisibleRect(); 3695 } 3696 3697 3698 @Override 3699 public boolean dispatchKeyEvent(KeyEvent event) { 3700 boolean dispatch = true; 3701 3702 if (!inEditingMode()) { 3703 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3704 mGotKeyDown = true; 3705 } else { 3706 if (!mGotKeyDown) { 3707 /* 3708 * We got a key up for which we were not the recipient of 3709 * the original key down. Don't give it to the view. 3710 */ 3711 dispatch = false; 3712 } 3713 mGotKeyDown = false; 3714 } 3715 } 3716 3717 if (dispatch) { 3718 return super.dispatchKeyEvent(event); 3719 } else { 3720 // We didn't dispatch, so let something else handle the key 3721 return false; 3722 } 3723 } 3724 3725 // Here are the snap align logic: 3726 // 1. If it starts nearly horizontally or vertically, snap align; 3727 // 2. If there is a dramitic direction change, let it go; 3728 // 3. If there is a same direction back and forth, lock it. 3729 3730 // adjustable parameters 3731 private int mMinLockSnapReverseDistance; 3732 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 3733 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 3734 3735 @Override 3736 public boolean onTouchEvent(MotionEvent ev) { 3737 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 3738 return false; 3739 } 3740 3741 if (DebugFlags.WEB_VIEW) { 3742 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 3743 + mTouchMode); 3744 } 3745 3746 int action = ev.getAction(); 3747 float x = ev.getX(); 3748 float y = ev.getY(); 3749 long eventTime = ev.getEventTime(); 3750 3751 // Due to the touch screen edge effect, a touch closer to the edge 3752 // always snapped to the edge. As getViewWidth() can be different from 3753 // getWidth() due to the scrollbar, adjusting the point to match 3754 // getViewWidth(). Same applied to the height. 3755 if (x > getViewWidth() - 1) { 3756 x = getViewWidth() - 1; 3757 } 3758 if (y > getViewHeight() - 1) { 3759 y = getViewHeight() - 1; 3760 } 3761 3762 // pass the touch events from UI thread to WebCore thread 3763 if (mForwardTouchEvents && mTouchMode != SCROLL_ZOOM_OUT 3764 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN 3765 && mTouchMode != SCROLL_ZOOM_ANIMATION_OUT 3766 && (action != MotionEvent.ACTION_MOVE || 3767 eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 3768 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 3769 ted.mAction = action; 3770 ted.mX = viewToContent((int) x + mScrollX); 3771 ted.mY = viewToContent((int) y + mScrollY); 3772 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 3773 mLastSentTouchTime = eventTime; 3774 } 3775 3776 int deltaX = (int) (mLastTouchX - x); 3777 int deltaY = (int) (mLastTouchY - y); 3778 3779 switch (action) { 3780 case MotionEvent.ACTION_DOWN: { 3781 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3782 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3783 // no interaction while animation is in progress 3784 break; 3785 } else if (mTouchMode == SCROLL_ZOOM_OUT) { 3786 mLastScrollX = mZoomScrollX; 3787 mLastScrollY = mZoomScrollY; 3788 // If two taps are close, ignore the first tap 3789 } else if (!mScroller.isFinished()) { 3790 mScroller.abortAnimation(); 3791 mTouchMode = TOUCH_DRAG_START_MODE; 3792 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 3793 } else if (mShiftIsPressed) { 3794 mSelectX = mScrollX + (int) x; 3795 mSelectY = mScrollY + (int) y; 3796 mTouchMode = TOUCH_SELECT_MODE; 3797 if (DebugFlags.WEB_VIEW) { 3798 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 3799 } 3800 nativeMoveSelection(viewToContent(mSelectX) 3801 , viewToContent(mSelectY), false); 3802 mTouchSelection = mExtendSelection = true; 3803 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 3804 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 3805 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 3806 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 3807 } else { 3808 // commit the short press action for the previous tap 3809 doShortPress(); 3810 // continue, mTouchMode should be still TOUCH_INIT_MODE 3811 } 3812 } else { 3813 mTouchMode = TOUCH_INIT_MODE; 3814 mPreventDrag = mForwardTouchEvents; 3815 mWebViewCore.sendMessage( 3816 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 3817 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 3818 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 3819 (eventTime - mLastTouchUpTime), eventTime); 3820 } 3821 } 3822 // Trigger the link 3823 if (mTouchMode == TOUCH_INIT_MODE 3824 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3825 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3826 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 3827 } 3828 // Remember where the motion event started 3829 mLastTouchX = x; 3830 mLastTouchY = y; 3831 mLastTouchTime = eventTime; 3832 mVelocityTracker = VelocityTracker.obtain(); 3833 mSnapScrollMode = SNAP_NONE; 3834 break; 3835 } 3836 case MotionEvent.ACTION_MOVE: { 3837 if (mTouchMode == TOUCH_DONE_MODE 3838 || mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3839 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3840 // no dragging during scroll zoom animation 3841 break; 3842 } 3843 if (mTouchMode == SCROLL_ZOOM_OUT) { 3844 // while fully zoomed out, move the virtual window 3845 moveZoomScrollWindow(x, y); 3846 break; 3847 } 3848 mVelocityTracker.addMovement(ev); 3849 3850 if (mTouchMode != TOUCH_DRAG_MODE) { 3851 if (mTouchMode == TOUCH_SELECT_MODE) { 3852 mSelectX = mScrollX + (int) x; 3853 mSelectY = mScrollY + (int) y; 3854 if (DebugFlags.WEB_VIEW) { 3855 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 3856 } 3857 nativeMoveSelection(viewToContent(mSelectX) 3858 , viewToContent(mSelectY), true); 3859 invalidate(); 3860 break; 3861 } 3862 if (mPreventDrag || (deltaX * deltaX + deltaY * deltaY) 3863 < mTouchSlopSquare) { 3864 break; 3865 } 3866 3867 if (mTouchMode == TOUCH_SHORTPRESS_MODE 3868 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3869 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3870 } else if (mTouchMode == TOUCH_INIT_MODE 3871 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3872 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3873 } 3874 3875 // if it starts nearly horizontal or vertical, enforce it 3876 int ax = Math.abs(deltaX); 3877 int ay = Math.abs(deltaY); 3878 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 3879 mSnapScrollMode = SNAP_X; 3880 mSnapPositive = deltaX > 0; 3881 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 3882 mSnapScrollMode = SNAP_Y; 3883 mSnapPositive = deltaY > 0; 3884 } 3885 3886 mTouchMode = TOUCH_DRAG_MODE; 3887 WebViewCore.pauseUpdate(mWebViewCore); 3888 if (!mDragFromTextInput) { 3889 nativeHideCursor(); 3890 } 3891 WebSettings settings = getSettings(); 3892 if (settings.supportZoom() && !mInZoomOverview 3893 && settings.getBuiltInZoomControls() 3894 && !mZoomButtonsController.isVisible() 3895 && (canZoomScrollOut() || 3896 mMinZoomScale < mMaxZoomScale)) { 3897 mZoomButtonsController.setVisible(true); 3898 } 3899 } 3900 3901 // do pan 3902 int newScrollX = pinLocX(mScrollX + deltaX); 3903 deltaX = newScrollX - mScrollX; 3904 int newScrollY = pinLocY(mScrollY + deltaY); 3905 deltaY = newScrollY - mScrollY; 3906 boolean done = false; 3907 if (deltaX == 0 && deltaY == 0) { 3908 done = true; 3909 } else { 3910 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 3911 int ax = Math.abs(deltaX); 3912 int ay = Math.abs(deltaY); 3913 if (mSnapScrollMode == SNAP_X) { 3914 // radical change means getting out of snap mode 3915 if (ay > MAX_SLOPE_FOR_DIAG * ax 3916 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3917 mSnapScrollMode = SNAP_NONE; 3918 } 3919 // reverse direction means lock in the snap mode 3920 if ((ax > MAX_SLOPE_FOR_DIAG * ay) && 3921 ((mSnapPositive && 3922 deltaX < -mMinLockSnapReverseDistance) 3923 || (!mSnapPositive && 3924 deltaX > mMinLockSnapReverseDistance))) { 3925 mSnapScrollMode = SNAP_X_LOCK; 3926 } 3927 } else { 3928 // radical change means getting out of snap mode 3929 if ((ax > MAX_SLOPE_FOR_DIAG * ay) 3930 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3931 mSnapScrollMode = SNAP_NONE; 3932 } 3933 // reverse direction means lock in the snap mode 3934 if ((ay > MAX_SLOPE_FOR_DIAG * ax) && 3935 ((mSnapPositive && 3936 deltaY < -mMinLockSnapReverseDistance) 3937 || (!mSnapPositive && 3938 deltaY > mMinLockSnapReverseDistance))) { 3939 mSnapScrollMode = SNAP_Y_LOCK; 3940 } 3941 } 3942 } 3943 3944 if (mSnapScrollMode == SNAP_X 3945 || mSnapScrollMode == SNAP_X_LOCK) { 3946 scrollBy(deltaX, 0); 3947 mLastTouchX = x; 3948 } else if (mSnapScrollMode == SNAP_Y 3949 || mSnapScrollMode == SNAP_Y_LOCK) { 3950 scrollBy(0, deltaY); 3951 mLastTouchY = y; 3952 } else { 3953 scrollBy(deltaX, deltaY); 3954 mLastTouchX = x; 3955 mLastTouchY = y; 3956 } 3957 mLastTouchTime = eventTime; 3958 mUserScroll = true; 3959 } 3960 3961 if (!getSettings().getBuiltInZoomControls() && !mInZoomOverview) { 3962 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 3963 boolean showMagnify = canZoomScrollOut(); 3964 if (mZoomControls != null && (showPlusMinus || showMagnify)) { 3965 if (mZoomControls.getVisibility() == View.VISIBLE) { 3966 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 3967 } else { 3968 mZoomControls.show(showPlusMinus, showMagnify); 3969 } 3970 mPrivateHandler.postDelayed(mZoomControlRunnable, 3971 ZOOM_CONTROLS_TIMEOUT); 3972 } 3973 } 3974 3975 if (done) { 3976 // return false to indicate that we can't pan out of the 3977 // view space 3978 return false; 3979 } 3980 break; 3981 } 3982 case MotionEvent.ACTION_UP: { 3983 mLastTouchUpTime = eventTime; 3984 switch (mTouchMode) { 3985 case TOUCH_DOUBLE_TAP_MODE: // double tap 3986 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3987 mTouchMode = TOUCH_DONE_MODE; 3988 doDoubleTap(); 3989 break; 3990 case TOUCH_INIT_MODE: // tap 3991 if (ENABLE_DOUBLETAP_ZOOM) { 3992 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3993 if (!mPreventDrag) { 3994 mPrivateHandler.sendMessageDelayed( 3995 mPrivateHandler.obtainMessage( 3996 RELEASE_SINGLE_TAP), 3997 ViewConfiguration.getDoubleTapTimeout()); 3998 } 3999 break; 4000 } 4001 // fall through 4002 case TOUCH_SHORTPRESS_START_MODE: 4003 case TOUCH_SHORTPRESS_MODE: 4004 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4005 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4006 mTouchMode = TOUCH_DONE_MODE; 4007 doShortPress(); 4008 break; 4009 case TOUCH_SELECT_MODE: 4010 commitCopy(); 4011 mTouchSelection = false; 4012 break; 4013 case SCROLL_ZOOM_ANIMATION_IN: 4014 case SCROLL_ZOOM_ANIMATION_OUT: 4015 // no action during scroll animation 4016 break; 4017 case SCROLL_ZOOM_OUT: 4018 if (DebugFlags.WEB_VIEW) { 4019 Log.v(LOGTAG, "ACTION_UP SCROLL_ZOOM_OUT" 4020 + " eventTime - mLastTouchTime=" 4021 + (eventTime - mLastTouchTime)); 4022 } 4023 // for now, always zoom back when the drag completes 4024 if (true || eventTime - mLastTouchTime < TAP_TIMEOUT) { 4025 // but if we tap, zoom in where we tap 4026 if (eventTime - mLastTouchTime < TAP_TIMEOUT) { 4027 zoomScrollTap(x, y); 4028 } 4029 // start zooming in back to the original view 4030 setZoomScrollIn(); 4031 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 4032 invalidate(); 4033 } 4034 break; 4035 case TOUCH_DRAG_MODE: 4036 // if the user waits a while w/o moving before the 4037 // up, we don't want to do a fling 4038 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4039 mVelocityTracker.addMovement(ev); 4040 doFling(); 4041 break; 4042 } 4043 WebViewCore.resumeUpdate(mWebViewCore); 4044 break; 4045 case TOUCH_DRAG_START_MODE: 4046 case TOUCH_DONE_MODE: 4047 // do nothing 4048 break; 4049 } 4050 // we also use mVelocityTracker == null to tell us that we are 4051 // not "moving around", so we can take the slower/prettier 4052 // mode in the drawing code 4053 if (mVelocityTracker != null) { 4054 mVelocityTracker.recycle(); 4055 mVelocityTracker = null; 4056 } 4057 break; 4058 } 4059 case MotionEvent.ACTION_CANCEL: { 4060 // we also use mVelocityTracker == null to tell us that we are 4061 // not "moving around", so we can take the slower/prettier 4062 // mode in the drawing code 4063 if (mVelocityTracker != null) { 4064 mVelocityTracker.recycle(); 4065 mVelocityTracker = null; 4066 } 4067 if (mTouchMode == SCROLL_ZOOM_OUT || 4068 mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 4069 scrollTo(mZoomScrollX, mZoomScrollY); 4070 } else if (mTouchMode == TOUCH_DRAG_MODE) { 4071 WebViewCore.resumeUpdate(mWebViewCore); 4072 } 4073 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4074 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4075 mTouchMode = TOUCH_DONE_MODE; 4076 nativeHideCursor(); 4077 break; 4078 } 4079 } 4080 return true; 4081 } 4082 4083 private long mTrackballFirstTime = 0; 4084 private long mTrackballLastTime = 0; 4085 private float mTrackballRemainsX = 0.0f; 4086 private float mTrackballRemainsY = 0.0f; 4087 private int mTrackballXMove = 0; 4088 private int mTrackballYMove = 0; 4089 private boolean mExtendSelection = false; 4090 private boolean mTouchSelection = false; 4091 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4092 private static final int TRACKBALL_TIMEOUT = 200; 4093 private static final int TRACKBALL_WAIT = 100; 4094 private static final int TRACKBALL_SCALE = 400; 4095 private static final int TRACKBALL_SCROLL_COUNT = 5; 4096 private static final int TRACKBALL_MOVE_COUNT = 10; 4097 private static final int TRACKBALL_MULTIPLIER = 3; 4098 private static final int SELECT_CURSOR_OFFSET = 16; 4099 private int mSelectX = 0; 4100 private int mSelectY = 0; 4101 private boolean mShiftIsPressed = false; 4102 private boolean mTrackballDown = false; 4103 private long mTrackballUpTime = 0; 4104 private long mLastCursorTime = 0; 4105 private Rect mLastCursorBounds; 4106 4107 // Set by default; BrowserActivity clears to interpret trackball data 4108 // directly for movement. Currently, the framework only passes 4109 // arrow key events, not trackball events, from one child to the next 4110 private boolean mMapTrackballToArrowKeys = true; 4111 4112 public void setMapTrackballToArrowKeys(boolean setMap) { 4113 mMapTrackballToArrowKeys = setMap; 4114 } 4115 4116 void resetTrackballTime() { 4117 mTrackballLastTime = 0; 4118 } 4119 4120 @Override 4121 public boolean onTrackballEvent(MotionEvent ev) { 4122 long time = ev.getEventTime(); 4123 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4124 if (ev.getY() > 0) pageDown(true); 4125 if (ev.getY() < 0) pageUp(true); 4126 return true; 4127 } 4128 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4129 mPrivateHandler.removeMessages(SWITCH_TO_CLICK); 4130 mTrackballDown = true; 4131 if (mNativeClass == 0) { 4132 return false; 4133 } 4134 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4135 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4136 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4137 nativeSelectBestAt(mLastCursorBounds); 4138 } 4139 if (DebugFlags.WEB_VIEW) { 4140 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4141 + " time=" + time 4142 + " mLastCursorTime=" + mLastCursorTime); 4143 } 4144 if (isInTouchMode()) requestFocusFromTouch(); 4145 return false; // let common code in onKeyDown at it 4146 } 4147 if (ev.getAction() == MotionEvent.ACTION_UP) { 4148 // LONG_PRESS_CENTER is set in common onKeyDown 4149 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4150 mTrackballDown = false; 4151 mTrackballUpTime = time; 4152 if (mShiftIsPressed) { 4153 if (mExtendSelection) { 4154 commitCopy(); 4155 } else { 4156 mExtendSelection = true; 4157 } 4158 } 4159 if (DebugFlags.WEB_VIEW) { 4160 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4161 + " time=" + time 4162 ); 4163 } 4164 return false; // let common code in onKeyUp at it 4165 } 4166 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4167 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4168 return false; 4169 } 4170 // no move if we're still waiting on SWITCH_TO_CLICK timeout 4171 if (mTouchMode == TOUCH_DOUBLECLICK_MODE) { 4172 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent 2 click quit"); 4173 return true; 4174 } 4175 if (mTrackballDown) { 4176 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4177 return true; // discard move if trackball is down 4178 } 4179 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4180 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4181 return true; 4182 } 4183 // TODO: alternatively we can do panning as touch does 4184 switchOutDrawHistory(); 4185 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4186 if (DebugFlags.WEB_VIEW) { 4187 Log.v(LOGTAG, "onTrackballEvent time=" 4188 + time + " last=" + mTrackballLastTime); 4189 } 4190 mTrackballFirstTime = time; 4191 mTrackballXMove = mTrackballYMove = 0; 4192 } 4193 mTrackballLastTime = time; 4194 if (DebugFlags.WEB_VIEW) { 4195 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4196 } 4197 mTrackballRemainsX += ev.getX(); 4198 mTrackballRemainsY += ev.getY(); 4199 doTrackball(time); 4200 return true; 4201 } 4202 4203 void moveSelection(float xRate, float yRate) { 4204 if (mNativeClass == 0) 4205 return; 4206 int width = getViewWidth(); 4207 int height = getViewHeight(); 4208 mSelectX += scaleTrackballX(xRate, width); 4209 mSelectY += scaleTrackballY(yRate, height); 4210 int maxX = width + mScrollX; 4211 int maxY = height + mScrollY; 4212 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4213 , mSelectX)); 4214 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4215 , mSelectY)); 4216 if (DebugFlags.WEB_VIEW) { 4217 Log.v(LOGTAG, "moveSelection" 4218 + " mSelectX=" + mSelectX 4219 + " mSelectY=" + mSelectY 4220 + " mScrollX=" + mScrollX 4221 + " mScrollY=" + mScrollY 4222 + " xRate=" + xRate 4223 + " yRate=" + yRate 4224 ); 4225 } 4226 nativeMoveSelection(viewToContent(mSelectX) 4227 , viewToContent(mSelectY), mExtendSelection); 4228 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4229 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4230 : 0; 4231 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4232 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4233 : 0; 4234 pinScrollBy(scrollX, scrollY, true, 0); 4235 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4236 requestRectangleOnScreen(select); 4237 invalidate(); 4238 } 4239 4240 private int scaleTrackballX(float xRate, int width) { 4241 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4242 int nextXMove = xMove; 4243 if (xMove > 0) { 4244 if (xMove > mTrackballXMove) { 4245 xMove -= mTrackballXMove; 4246 } 4247 } else if (xMove < mTrackballXMove) { 4248 xMove -= mTrackballXMove; 4249 } 4250 mTrackballXMove = nextXMove; 4251 return xMove; 4252 } 4253 4254 private int scaleTrackballY(float yRate, int height) { 4255 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4256 int nextYMove = yMove; 4257 if (yMove > 0) { 4258 if (yMove > mTrackballYMove) { 4259 yMove -= mTrackballYMove; 4260 } 4261 } else if (yMove < mTrackballYMove) { 4262 yMove -= mTrackballYMove; 4263 } 4264 mTrackballYMove = nextYMove; 4265 return yMove; 4266 } 4267 4268 private int keyCodeToSoundsEffect(int keyCode) { 4269 switch(keyCode) { 4270 case KeyEvent.KEYCODE_DPAD_UP: 4271 return SoundEffectConstants.NAVIGATION_UP; 4272 case KeyEvent.KEYCODE_DPAD_RIGHT: 4273 return SoundEffectConstants.NAVIGATION_RIGHT; 4274 case KeyEvent.KEYCODE_DPAD_DOWN: 4275 return SoundEffectConstants.NAVIGATION_DOWN; 4276 case KeyEvent.KEYCODE_DPAD_LEFT: 4277 return SoundEffectConstants.NAVIGATION_LEFT; 4278 } 4279 throw new IllegalArgumentException("keyCode must be one of " + 4280 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4281 "KEYCODE_DPAD_LEFT}."); 4282 } 4283 4284 private void doTrackball(long time) { 4285 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4286 if (elapsed == 0) { 4287 elapsed = TRACKBALL_TIMEOUT; 4288 } 4289 float xRate = mTrackballRemainsX * 1000 / elapsed; 4290 float yRate = mTrackballRemainsY * 1000 / elapsed; 4291 if (mShiftIsPressed) { 4292 moveSelection(xRate, yRate); 4293 mTrackballRemainsX = mTrackballRemainsY = 0; 4294 return; 4295 } 4296 float ax = Math.abs(xRate); 4297 float ay = Math.abs(yRate); 4298 float maxA = Math.max(ax, ay); 4299 if (DebugFlags.WEB_VIEW) { 4300 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4301 + " xRate=" + xRate 4302 + " yRate=" + yRate 4303 + " mTrackballRemainsX=" + mTrackballRemainsX 4304 + " mTrackballRemainsY=" + mTrackballRemainsY); 4305 } 4306 int width = mContentWidth - getViewWidth(); 4307 int height = mContentHeight - getViewHeight(); 4308 if (width < 0) width = 0; 4309 if (height < 0) height = 0; 4310 if (mTouchMode == SCROLL_ZOOM_OUT) { 4311 int oldX = mZoomScrollX; 4312 int oldY = mZoomScrollY; 4313 int maxWH = Math.max(width, height); 4314 mZoomScrollX += scaleTrackballX(xRate, maxWH); 4315 mZoomScrollY += scaleTrackballY(yRate, maxWH); 4316 if (DebugFlags.WEB_VIEW) { 4317 Log.v(LOGTAG, "doTrackball SCROLL_ZOOM_OUT" 4318 + " mZoomScrollX=" + mZoomScrollX 4319 + " mZoomScrollY=" + mZoomScrollY); 4320 } 4321 mZoomScrollX = Math.min(width, Math.max(0, mZoomScrollX)); 4322 mZoomScrollY = Math.min(height, Math.max(0, mZoomScrollY)); 4323 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 4324 invalidate(); 4325 } 4326 mTrackballRemainsX = mTrackballRemainsY = 0; 4327 return; 4328 } 4329 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4330 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4331 maxA = Math.max(ax, ay); 4332 int count = Math.max(0, (int) maxA); 4333 int oldScrollX = mScrollX; 4334 int oldScrollY = mScrollY; 4335 if (count > 0) { 4336 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4337 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4338 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4339 KeyEvent.KEYCODE_DPAD_RIGHT; 4340 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4341 if (DebugFlags.WEB_VIEW) { 4342 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4343 + " count=" + count 4344 + " mTrackballRemainsX=" + mTrackballRemainsX 4345 + " mTrackballRemainsY=" + mTrackballRemainsY); 4346 } 4347 if (navHandledKey(selectKeyCode, count, false, time, false)) { 4348 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4349 } 4350 mTrackballRemainsX = mTrackballRemainsY = 0; 4351 } 4352 if (count >= TRACKBALL_SCROLL_COUNT) { 4353 int xMove = scaleTrackballX(xRate, width); 4354 int yMove = scaleTrackballY(yRate, height); 4355 if (DebugFlags.WEB_VIEW) { 4356 Log.v(LOGTAG, "doTrackball pinScrollBy" 4357 + " count=" + count 4358 + " xMove=" + xMove + " yMove=" + yMove 4359 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4360 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4361 ); 4362 } 4363 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4364 xMove = 0; 4365 } 4366 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4367 yMove = 0; 4368 } 4369 if (xMove != 0 || yMove != 0) { 4370 pinScrollBy(xMove, yMove, true, 0); 4371 } 4372 mUserScroll = true; 4373 } 4374 } 4375 4376 public void flingScroll(int vx, int vy) { 4377 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4378 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4379 4380 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 4381 invalidate(); 4382 } 4383 4384 private void doFling() { 4385 if (mVelocityTracker == null) { 4386 return; 4387 } 4388 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4389 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4390 4391 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 4392 int vx = (int) mVelocityTracker.getXVelocity(); 4393 int vy = (int) mVelocityTracker.getYVelocity(); 4394 4395 if (mSnapScrollMode != SNAP_NONE) { 4396 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_X_LOCK) { 4397 vy = 0; 4398 } else { 4399 vx = 0; 4400 } 4401 } 4402 4403 if (true /* EMG release: make our fling more like Maps' */) { 4404 // maps cuts their velocity in half 4405 vx = vx * 3 / 4; 4406 vy = vy * 3 / 4; 4407 } 4408 4409 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 4410 // TODO: duration is calculated based on velocity, if the range is 4411 // small, the animation will stop before duration is up. We may 4412 // want to calculate how long the animation is going to run to precisely 4413 // resume the webcore update. 4414 final int time = mScroller.getDuration(); 4415 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_UPDATE, time); 4416 invalidate(); 4417 } 4418 4419 private boolean zoomWithPreview(float scale) { 4420 float oldScale = mActualScale; 4421 mInitialScrollX = mScrollX; 4422 mInitialScrollY = mScrollY; 4423 4424 // snap to DEFAULT_SCALE if it is close 4425 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 4426 scale = mDefaultScale; 4427 } 4428 4429 setNewZoomScale(scale, false); 4430 4431 if (oldScale != mActualScale) { 4432 // use mZoomPickerScale to see zoom preview first 4433 mZoomStart = SystemClock.uptimeMillis(); 4434 mInvInitialZoomScale = 1.0f / oldScale; 4435 mInvFinalZoomScale = 1.0f / mActualScale; 4436 mZoomScale = mActualScale; 4437 if (!mInZoomOverview) { 4438 mLastScale = scale; 4439 } 4440 invalidate(); 4441 return true; 4442 } else { 4443 return false; 4444 } 4445 } 4446 4447 /** 4448 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 4449 * in charge of installing this view to the view hierarchy. This view will 4450 * become visible when the user starts scrolling via touch and fade away if 4451 * the user does not interact with it. 4452 * <p/> 4453 * API version 3 introduces a built-in zoom mechanism that is shown 4454 * automatically by the MapView. This is the preferred approach for 4455 * showing the zoom UI. 4456 * 4457 * @deprecated The built-in zoom mechanism is preferred, see 4458 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 4459 */ 4460 @Deprecated 4461 public View getZoomControls() { 4462 if (!getSettings().supportZoom()) { 4463 Log.w(LOGTAG, "This WebView doesn't support zoom."); 4464 return null; 4465 } 4466 if (mZoomControls == null) { 4467 mZoomControls = createZoomControls(); 4468 4469 /* 4470 * need to be set to VISIBLE first so that getMeasuredHeight() in 4471 * {@link #onSizeChanged()} can return the measured value for proper 4472 * layout. 4473 */ 4474 mZoomControls.setVisibility(View.VISIBLE); 4475 mZoomControlRunnable = new Runnable() { 4476 public void run() { 4477 4478 /* Don't dismiss the controls if the user has 4479 * focus on them. Wait and check again later. 4480 */ 4481 if (!mZoomControls.hasFocus()) { 4482 mZoomControls.hide(); 4483 } else { 4484 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4485 mPrivateHandler.postDelayed(mZoomControlRunnable, 4486 ZOOM_CONTROLS_TIMEOUT); 4487 } 4488 } 4489 }; 4490 } 4491 return mZoomControls; 4492 } 4493 4494 private ExtendedZoomControls createZoomControls() { 4495 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 4496 , null); 4497 zoomControls.setOnZoomInClickListener(new OnClickListener() { 4498 public void onClick(View v) { 4499 // reset time out 4500 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4501 mPrivateHandler.postDelayed(mZoomControlRunnable, 4502 ZOOM_CONTROLS_TIMEOUT); 4503 zoomIn(); 4504 } 4505 }); 4506 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 4507 public void onClick(View v) { 4508 // reset time out 4509 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4510 mPrivateHandler.postDelayed(mZoomControlRunnable, 4511 ZOOM_CONTROLS_TIMEOUT); 4512 zoomOut(); 4513 } 4514 }); 4515 zoomControls.setOnZoomMagnifyClickListener(new OnClickListener() { 4516 public void onClick(View v) { 4517 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4518 mPrivateHandler.postDelayed(mZoomControlRunnable, 4519 ZOOM_CONTROLS_TIMEOUT); 4520 zoomScrollOut(); 4521 } 4522 }); 4523 return zoomControls; 4524 } 4525 4526 /** 4527 * Gets the {@link ZoomButtonsController} which can be used to add 4528 * additional buttons to the zoom controls window. 4529 * 4530 * @return The instance of {@link ZoomButtonsController} used by this class, 4531 * or null if it is unavailable. 4532 * @hide 4533 */ 4534 public ZoomButtonsController getZoomButtonsController() { 4535 return mZoomButtonsController; 4536 } 4537 4538 /** 4539 * Perform zoom in in the webview 4540 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 4541 */ 4542 public boolean zoomIn() { 4543 // TODO: alternatively we can disallow this during draw history mode 4544 switchOutDrawHistory(); 4545 // Center zooming to the center of the screen. 4546 mZoomCenterX = getViewWidth() * .5f; 4547 mZoomCenterY = getViewHeight() * .5f; 4548 return zoomWithPreview(mActualScale * 1.25f); 4549 } 4550 4551 /** 4552 * Perform zoom out in the webview 4553 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 4554 */ 4555 public boolean zoomOut() { 4556 // TODO: alternatively we can disallow this during draw history mode 4557 switchOutDrawHistory(); 4558 // Center zooming to the center of the screen. 4559 mZoomCenterX = getViewWidth() * .5f; 4560 mZoomCenterY = getViewHeight() * .5f; 4561 return zoomWithPreview(mActualScale * 0.8f); 4562 } 4563 4564 private void updateSelection() { 4565 if (mNativeClass == 0) { 4566 return; 4567 } 4568 // mLastTouchX and mLastTouchY are the point in the current viewport 4569 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4570 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4571 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 4572 contentX + mNavSlop, contentY + mNavSlop); 4573 nativeSelectBestAt(rect); 4574 } 4575 4576 /** 4577 * Scroll the focused text field/area to match the WebTextView 4578 * @param x New x position of the WebTextView in view coordinates 4579 * @param y New y position of the WebTextView in view coordinates 4580 */ 4581 /*package*/ void scrollFocusedTextInput(int x, int y) { 4582 if (!inEditingMode() || mWebViewCore == null) { 4583 return; 4584 } 4585 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, viewToContent(x), 4586 viewToContent(y)); 4587 } 4588 4589 /** 4590 * Set our starting point and time for a drag from the WebTextView. 4591 */ 4592 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 4593 if (!inEditingMode()) { 4594 return; 4595 } 4596 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 4597 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 4598 mLastTouchTime = eventTime; 4599 if (!mScroller.isFinished()) { 4600 mScroller.abortAnimation(); 4601 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 4602 } 4603 mSnapScrollMode = SNAP_NONE; 4604 mVelocityTracker = VelocityTracker.obtain(); 4605 mTouchMode = TOUCH_DRAG_START_MODE; 4606 } 4607 4608 /** 4609 * Given a motion event from the WebTextView, set its location to our 4610 * coordinates, and handle the event. 4611 */ 4612 /*package*/ boolean textFieldDrag(MotionEvent event) { 4613 if (!inEditingMode()) { 4614 return false; 4615 } 4616 mDragFromTextInput = true; 4617 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 4618 (float) (mWebTextView.getTop() - mScrollY)); 4619 boolean result = onTouchEvent(event); 4620 mDragFromTextInput = false; 4621 return result; 4622 } 4623 4624 /*package*/ void shortPressOnTextField() { 4625 if (inEditingMode()) { 4626 View v = mWebTextView; 4627 int x = viewToContent((v.getLeft() + v.getRight()) >> 1); 4628 int y = viewToContent((v.getTop() + v.getBottom()) >> 1); 4629 nativeMotionUp(x, y, mNavSlop); 4630 } 4631 } 4632 4633 private void doShortPress() { 4634 if (mNativeClass == 0) { 4635 return; 4636 } 4637 switchOutDrawHistory(); 4638 // mLastTouchX and mLastTouchY are the point in the current viewport 4639 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4640 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4641 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 4642 if (mLogEvent) { 4643 Checkin.updateStats(mContext.getContentResolver(), 4644 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 4645 } 4646 } 4647 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 4648 playSoundEffect(SoundEffectConstants.CLICK); 4649 } 4650 } 4651 4652 private void doDoubleTap() { 4653 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 4654 return; 4655 } 4656 mZoomCenterX = mLastTouchX; 4657 mZoomCenterY = mLastTouchY; 4658 mInZoomOverview = !mInZoomOverview; 4659 if (mInZoomOverview) { 4660 float newScale = (float) getViewWidth() 4661 / (mZoomOverviewWidth > 0 ? mZoomOverviewWidth 4662 : mContentWidth); 4663 if (Math.abs(newScale - mActualScale) < 0.01) { 4664 mInZoomOverview = !mInZoomOverview; 4665 // as it is already full screen, do nothing. 4666 return; 4667 } 4668 if (getSettings().getBuiltInZoomControls()) { 4669 if (mZoomButtonsController.isVisible()) { 4670 mZoomButtonsController.setVisible(false); 4671 } 4672 } else { 4673 if (mZoomControlRunnable != null) { 4674 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4675 } 4676 if (mZoomControls != null) { 4677 mZoomControls.hide(); 4678 } 4679 } 4680 zoomWithPreview(newScale); 4681 } else { 4682 // mLastTouchX and mLastTouchY are the point in the current viewport 4683 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4684 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4685 int left = nativeGetBlockLeftEdge(contentX, contentY, mActualScale); 4686 if (left != NO_LEFTEDGE) { 4687 // add a 5pt padding to the left edge. Re-calculate the zoom 4688 // center so that the new scroll x will be on the left edge. 4689 mZoomCenterX = left < 5 ? 0 : (left - 5) * mLastScale 4690 * mActualScale / (mLastScale - mActualScale); 4691 } 4692 zoomWithPreview(mLastScale); 4693 } 4694 } 4695 4696 // Called by JNI to handle a touch on a node representing an email address, 4697 // address, or phone number 4698 private void overrideLoading(String url) { 4699 mCallbackProxy.uiOverrideUrlLoading(url); 4700 } 4701 4702 // called by JNI 4703 private void sendPluginState(int state) { 4704 WebViewCore.PluginStateData psd = new WebViewCore.PluginStateData(); 4705 psd.mFrame = nativeCursorFramePointer(); 4706 psd.mNode = nativeCursorNodePointer(); 4707 psd.mState = state; 4708 mWebViewCore.sendMessage(EventHub.PLUGIN_STATE, psd); 4709 } 4710 4711 @Override 4712 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 4713 boolean result = false; 4714 if (inEditingMode()) { 4715 result = mWebTextView.requestFocus(direction, 4716 previouslyFocusedRect); 4717 } else { 4718 result = super.requestFocus(direction, previouslyFocusedRect); 4719 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 4720 // For cases such as GMail, where we gain focus from a direction, 4721 // we want to move to the first available link. 4722 // FIXME: If there are no visible links, we may not want to 4723 int fakeKeyDirection = 0; 4724 switch(direction) { 4725 case View.FOCUS_UP: 4726 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 4727 break; 4728 case View.FOCUS_DOWN: 4729 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 4730 break; 4731 case View.FOCUS_LEFT: 4732 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 4733 break; 4734 case View.FOCUS_RIGHT: 4735 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 4736 break; 4737 default: 4738 return result; 4739 } 4740 if (mNativeClass != 0 && !nativeHasCursorNode()) { 4741 navHandledKey(fakeKeyDirection, 1, true, 0, true); 4742 } 4743 } 4744 } 4745 return result; 4746 } 4747 4748 @Override 4749 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4750 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 4751 4752 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 4753 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 4754 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 4755 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 4756 4757 int measuredHeight = heightSize; 4758 int measuredWidth = widthSize; 4759 4760 // Grab the content size from WebViewCore. 4761 int contentHeight = mContentHeight; 4762 int contentWidth = mContentWidth; 4763 4764// Log.d(LOGTAG, "------- measure " + heightMode); 4765 4766 if (heightMode != MeasureSpec.EXACTLY) { 4767 mHeightCanMeasure = true; 4768 measuredHeight = contentHeight; 4769 if (heightMode == MeasureSpec.AT_MOST) { 4770 // If we are larger than the AT_MOST height, then our height can 4771 // no longer be measured and we should scroll internally. 4772 if (measuredHeight > heightSize) { 4773 measuredHeight = heightSize; 4774 mHeightCanMeasure = false; 4775 } 4776 } 4777 } else { 4778 mHeightCanMeasure = false; 4779 } 4780 if (mNativeClass != 0) { 4781 nativeSetHeightCanMeasure(mHeightCanMeasure); 4782 } 4783 // For the width, always use the given size unless unspecified. 4784 if (widthMode == MeasureSpec.UNSPECIFIED) { 4785 mWidthCanMeasure = true; 4786 measuredWidth = contentWidth; 4787 } else { 4788 mWidthCanMeasure = false; 4789 } 4790 4791 synchronized (this) { 4792 setMeasuredDimension(measuredWidth, measuredHeight); 4793 } 4794 } 4795 4796 @Override 4797 public boolean requestChildRectangleOnScreen(View child, 4798 Rect rect, 4799 boolean immediate) { 4800 rect.offset(child.getLeft() - child.getScrollX(), 4801 child.getTop() - child.getScrollY()); 4802 4803 int height = getHeight() - getHorizontalScrollbarHeight(); 4804 int screenTop = mScrollY; 4805 int screenBottom = screenTop + height; 4806 4807 int scrollYDelta = 0; 4808 4809 if (rect.bottom > screenBottom) { 4810 int oneThirdOfScreenHeight = height / 3; 4811 if (rect.height() > 2 * oneThirdOfScreenHeight) { 4812 // If the rectangle is too tall to fit in the bottom two thirds 4813 // of the screen, place it at the top. 4814 scrollYDelta = rect.top - screenTop; 4815 } else { 4816 // If the rectangle will still fit on screen, we want its 4817 // top to be in the top third of the screen. 4818 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 4819 } 4820 } else if (rect.top < screenTop) { 4821 scrollYDelta = rect.top - screenTop; 4822 } 4823 4824 int width = getWidth() - getVerticalScrollbarWidth(); 4825 int screenLeft = mScrollX; 4826 int screenRight = screenLeft + width; 4827 4828 int scrollXDelta = 0; 4829 4830 if (rect.right > screenRight && rect.left > screenLeft) { 4831 if (rect.width() > width) { 4832 scrollXDelta += (rect.left - screenLeft); 4833 } else { 4834 scrollXDelta += (rect.right - screenRight); 4835 } 4836 } else if (rect.left < screenLeft) { 4837 scrollXDelta -= (screenLeft - rect.left); 4838 } 4839 4840 if ((scrollYDelta | scrollXDelta) != 0) { 4841 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 4842 } 4843 4844 return false; 4845 } 4846 4847 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 4848 String replace, int newStart, int newEnd) { 4849 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 4850 arg.mReplace = replace; 4851 arg.mNewStart = newStart; 4852 arg.mNewEnd = newEnd; 4853 mTextGeneration++; 4854 arg.mTextGeneration = mTextGeneration; 4855 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 4856 } 4857 4858 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 4859 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 4860 mWebViewCore.sendMessage(EventHub.CLICK); 4861 } 4862 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 4863 arg.mEvent = event; 4864 arg.mCurrentText = currentText; 4865 // Increase our text generation number, and pass it to webcore thread 4866 mTextGeneration++; 4867 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 4868 // WebKit's document state is not saved until about to leave the page. 4869 // To make sure the host application, like Browser, has the up to date 4870 // document state when it goes to background, we force to save the 4871 // document state. 4872 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 4873 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 4874 cursorData(), 1000); 4875 } 4876 4877 /* package */ WebViewCore getWebViewCore() { 4878 return mWebViewCore; 4879 } 4880 4881 //------------------------------------------------------------------------- 4882 // Methods can be called from a separate thread, like WebViewCore 4883 // If it needs to call the View system, it has to send message. 4884 //------------------------------------------------------------------------- 4885 4886 /** 4887 * General handler to receive message coming from webkit thread 4888 */ 4889 class PrivateHandler extends Handler { 4890 @Override 4891 public void handleMessage(Message msg) { 4892 if (DebugFlags.WEB_VIEW) { 4893 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 4894 > INVAL_RECT_MSG_ID ? Integer.toString(msg.what) 4895 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 4896 } 4897 switch (msg.what) { 4898 case REMEMBER_PASSWORD: { 4899 mDatabase.setUsernamePassword( 4900 msg.getData().getString("host"), 4901 msg.getData().getString("username"), 4902 msg.getData().getString("password")); 4903 ((Message) msg.obj).sendToTarget(); 4904 break; 4905 } 4906 case NEVER_REMEMBER_PASSWORD: { 4907 mDatabase.setUsernamePassword( 4908 msg.getData().getString("host"), null, null); 4909 ((Message) msg.obj).sendToTarget(); 4910 break; 4911 } 4912 case SWITCH_TO_SHORTPRESS: { 4913 if (mTouchMode == TOUCH_INIT_MODE) { 4914 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 4915 updateSelection(); 4916 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4917 mTouchMode = TOUCH_DONE_MODE; 4918 } 4919 break; 4920 } 4921 case SWITCH_TO_LONGPRESS: { 4922 if (!mPreventDrag) { 4923 mTouchMode = TOUCH_DONE_MODE; 4924 performLongClick(); 4925 rebuildWebTextView(); 4926 } 4927 break; 4928 } 4929 case RELEASE_SINGLE_TAP: { 4930 if (!mPreventDrag) { 4931 mTouchMode = TOUCH_DONE_MODE; 4932 doShortPress(); 4933 } 4934 break; 4935 } 4936 case SWITCH_TO_CLICK: 4937 // The user clicked with the trackball, and did not click a 4938 // second time, so perform the action of a trackball single 4939 // click 4940 mTouchMode = TOUCH_DONE_MODE; 4941 Rect visibleRect = sendOurVisibleRect(); 4942 // Note that sendOurVisibleRect calls viewToContent, so the 4943 // coordinates should be in content coordinates. 4944 if (!nativeCursorIntersects(visibleRect)) { 4945 break; 4946 } 4947 nativeSetFollowedLink(true); 4948 nativeUpdatePluginReceivesEvents(); 4949 WebViewCore.CursorData data = cursorData(); 4950 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4951 playSoundEffect(SoundEffectConstants.CLICK); 4952 boolean isTextInput = nativeCursorIsTextInput(); 4953 if (isTextInput || !mCallbackProxy.uiOverrideUrlLoading( 4954 nativeCursorText())) { 4955 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4956 nativeCursorNodePointer()); 4957 } 4958 if (isTextInput) { 4959 rebuildWebTextView(); 4960 } 4961 break; 4962 case SCROLL_BY_MSG_ID: 4963 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 4964 break; 4965 case SYNC_SCROLL_TO_MSG_ID: 4966 if (mUserScroll) { 4967 // if user has scrolled explicitly, don't sync the 4968 // scroll position any more 4969 mUserScroll = false; 4970 break; 4971 } 4972 // fall through 4973 case SCROLL_TO_MSG_ID: 4974 if (setContentScrollTo(msg.arg1, msg.arg2)) { 4975 // if we can't scroll to the exact position due to pin, 4976 // send a message to WebCore to re-scroll when we get a 4977 // new picture 4978 mUserScroll = false; 4979 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 4980 msg.arg1, msg.arg2); 4981 } 4982 break; 4983 case SPAWN_SCROLL_TO_MSG_ID: 4984 spawnContentScrollTo(msg.arg1, msg.arg2); 4985 break; 4986 case NEW_PICTURE_MSG_ID: 4987 // called for new content 4988 final int viewWidth = getViewWidth(); 4989 final WebViewCore.DrawData draw = 4990 (WebViewCore.DrawData) msg.obj; 4991 final Point viewSize = draw.mViewPoint; 4992 boolean useWideViewport = 4993 mWebViewCore.getSettings().getUseWideViewPort(); 4994 WebViewCore.RestoreState restoreState = draw.mRestoreState; 4995 if (restoreState != null) { 4996 mInZoomOverview = false; 4997 mLastScale = restoreState.mTextWrapScale; 4998 if (restoreState.mMinScale == 0) { 4999 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 5000 mMinZoomScaleFixed = false; 5001 } else { 5002 mMinZoomScale = restoreState.mMinScale; 5003 mMinZoomScaleFixed = true; 5004 } 5005 if (restoreState.mMaxScale == 0) { 5006 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 5007 } else { 5008 mMaxZoomScale = restoreState.mMaxScale; 5009 } 5010 if (useWideViewport && restoreState.mViewScale == 0) { 5011 mInZoomOverview = ENABLE_DOUBLETAP_ZOOM; 5012 } 5013 setNewZoomScale(mLastScale, false); 5014 setContentScrollTo(restoreState.mScrollX, 5015 restoreState.mScrollY); 5016 // As we are on a new page, remove the WebTextView. This 5017 // is necessary for page loads driven by webkit, and in 5018 // particular when the user was on a password field, so 5019 // the WebTextView was visible. 5020 clearTextEntry(); 5021 } 5022 // We update the layout (i.e. request a layout from the 5023 // view system) if the last view size that we sent to 5024 // WebCore matches the view size of the picture we just 5025 // received in the fixed dimension. 5026 final boolean updateLayout = viewSize.x == mLastWidthSent 5027 && viewSize.y == mLastHeightSent; 5028 recordNewContentSize(draw.mWidthHeight.x, 5029 draw.mWidthHeight.y, updateLayout); 5030 if (DebugFlags.WEB_VIEW) { 5031 Rect b = draw.mInvalRegion.getBounds(); 5032 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5033 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5034 } 5035 invalidate(contentToView(draw.mInvalRegion.getBounds())); 5036 if (mPictureListener != null) { 5037 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5038 } 5039 if (useWideViewport) { 5040 mZoomOverviewWidth = Math.max(draw.mMinPrefWidth, 5041 draw.mViewPoint.x); 5042 } 5043 if (!mMinZoomScaleFixed) { 5044 mMinZoomScale = (float) viewWidth 5045 / Math.max(ZOOM_OUT_WIDTH, 5046 mZoomOverviewWidth > 0 ? mZoomOverviewWidth 5047 : mContentWidth); 5048 } 5049 if (!mDrawHistory && mInZoomOverview) { 5050 // fit the content width to the current view. Ignore 5051 // the rounding error case. 5052 if (Math.abs((viewWidth * mInvActualScale) 5053 - mZoomOverviewWidth) > 1) { 5054 zoomWithPreview((float) viewWidth 5055 / mZoomOverviewWidth); 5056 } 5057 } 5058 break; 5059 case WEBCORE_INITIALIZED_MSG_ID: 5060 // nativeCreate sets mNativeClass to a non-zero value 5061 nativeCreate(msg.arg1); 5062 break; 5063 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5064 // Make sure that the textfield is currently focused 5065 // and representing the same node as the pointer. 5066 if (inEditingMode() && 5067 mWebTextView.isSameTextField(msg.arg1)) { 5068 if (msg.getData().getBoolean("password")) { 5069 Spannable text = (Spannable) mWebTextView.getText(); 5070 int start = Selection.getSelectionStart(text); 5071 int end = Selection.getSelectionEnd(text); 5072 mWebTextView.setInPassword(true); 5073 // Restore the selection, which may have been 5074 // ruined by setInPassword. 5075 Spannable pword = 5076 (Spannable) mWebTextView.getText(); 5077 Selection.setSelection(pword, start, end); 5078 // If the text entry has created more events, ignore 5079 // this one. 5080 } else if (msg.arg2 == mTextGeneration) { 5081 mWebTextView.setTextAndKeepSelection( 5082 (String) msg.obj); 5083 } 5084 } 5085 break; 5086 case MOVE_OUT_OF_PLUGIN: 5087 if (nativePluginEatsNavKey()) { 5088 navHandledKey(msg.arg1, 1, false, 0, true); 5089 } 5090 break; 5091 case UPDATE_TEXT_ENTRY_MSG_ID: 5092 // this is sent after finishing resize in WebViewCore. Make 5093 // sure the text edit box is still on the screen. 5094 if (inEditingMode() && nativeCursorIsTextInput()) { 5095 mWebTextView.bringIntoView(); 5096 rebuildWebTextView(); 5097 } 5098 break; 5099 case CLEAR_TEXT_ENTRY: 5100 clearTextEntry(); 5101 break; 5102 case INVAL_RECT_MSG_ID: { 5103 Rect r = (Rect)msg.obj; 5104 if (r == null) { 5105 invalidate(); 5106 } else { 5107 // we need to scale r from content into view coords, 5108 // which viewInvalidate() does for us 5109 viewInvalidate(r.left, r.top, r.right, r.bottom); 5110 } 5111 break; 5112 } 5113 case REQUEST_FORM_DATA: 5114 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5115 if (mWebTextView.isSameTextField(msg.arg1)) { 5116 mWebTextView.setAdapterCustom(adapter); 5117 } 5118 break; 5119 case UPDATE_CLIPBOARD: 5120 String str = (String) msg.obj; 5121 if (DebugFlags.WEB_VIEW) { 5122 Log.v(LOGTAG, "UPDATE_CLIPBOARD " + str); 5123 } 5124 try { 5125 IClipboard clip = IClipboard.Stub.asInterface( 5126 ServiceManager.getService("clipboard")); 5127 clip.setClipboardText(str); 5128 } catch (android.os.RemoteException e) { 5129 Log.e(LOGTAG, "Clipboard failed", e); 5130 } 5131 break; 5132 case RESUME_WEBCORE_UPDATE: 5133 WebViewCore.resumeUpdate(mWebViewCore); 5134 break; 5135 5136 case LONG_PRESS_CENTER: 5137 // as this is shared by keydown and trackballdown, reset all 5138 // the states 5139 mGotCenterDown = false; 5140 mTrackballDown = false; 5141 // LONG_PRESS_CENTER is sent as a delayed message. If we 5142 // switch to windows overview, the WebView will be 5143 // temporarily removed from the view system. In that case, 5144 // do nothing. 5145 if (getParent() != null) { 5146 performLongClick(); 5147 } 5148 break; 5149 5150 case WEBCORE_NEED_TOUCH_EVENTS: 5151 mForwardTouchEvents = (msg.arg1 != 0); 5152 break; 5153 5154 case PREVENT_TOUCH_ID: 5155 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5156 mPreventDrag = msg.arg2 == 1; 5157 if (mPreventDrag) { 5158 mTouchMode = TOUCH_DONE_MODE; 5159 } 5160 } 5161 break; 5162 5163 case REQUEST_KEYBOARD: 5164 if (msg.arg1 == 0) { 5165 hideSoftKeyboard(); 5166 } else { 5167 displaySoftKeyboard(false); 5168 } 5169 break; 5170 5171 default: 5172 super.handleMessage(msg); 5173 break; 5174 } 5175 } 5176 } 5177 5178 // Class used to use a dropdown for a <select> element 5179 private class InvokeListBox implements Runnable { 5180 // Whether the listbox allows multiple selection. 5181 private boolean mMultiple; 5182 // Passed in to a list with multiple selection to tell 5183 // which items are selected. 5184 private int[] mSelectedArray; 5185 // Passed in to a list with single selection to tell 5186 // where the initial selection is. 5187 private int mSelection; 5188 5189 private Container[] mContainers; 5190 5191 // Need these to provide stable ids to my ArrayAdapter, 5192 // which normally does not have stable ids. (Bug 1250098) 5193 private class Container extends Object { 5194 String mString; 5195 boolean mEnabled; 5196 int mId; 5197 5198 public String toString() { 5199 return mString; 5200 } 5201 } 5202 5203 /** 5204 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 5205 * and allow filtering. 5206 */ 5207 private class MyArrayListAdapter extends ArrayAdapter<Container> { 5208 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 5209 super(context, 5210 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 5211 com.android.internal.R.layout.select_dialog_singlechoice, 5212 objects); 5213 } 5214 5215 @Override 5216 public boolean hasStableIds() { 5217 // AdapterView's onChanged method uses this to determine whether 5218 // to restore the old state. Return false so that the old (out 5219 // of date) state does not replace the new, valid state. 5220 return false; 5221 } 5222 5223 private Container item(int position) { 5224 if (position < 0 || position >= getCount()) { 5225 return null; 5226 } 5227 return (Container) getItem(position); 5228 } 5229 5230 @Override 5231 public long getItemId(int position) { 5232 Container item = item(position); 5233 if (item == null) { 5234 return -1; 5235 } 5236 return item.mId; 5237 } 5238 5239 @Override 5240 public boolean areAllItemsEnabled() { 5241 return false; 5242 } 5243 5244 @Override 5245 public boolean isEnabled(int position) { 5246 Container item = item(position); 5247 if (item == null) { 5248 return false; 5249 } 5250 return item.mEnabled; 5251 } 5252 } 5253 5254 private InvokeListBox(String[] array, 5255 boolean[] enabled, int[] selected) { 5256 mMultiple = true; 5257 mSelectedArray = selected; 5258 5259 int length = array.length; 5260 mContainers = new Container[length]; 5261 for (int i = 0; i < length; i++) { 5262 mContainers[i] = new Container(); 5263 mContainers[i].mString = array[i]; 5264 mContainers[i].mEnabled = enabled[i]; 5265 mContainers[i].mId = i; 5266 } 5267 } 5268 5269 private InvokeListBox(String[] array, boolean[] enabled, int 5270 selection) { 5271 mSelection = selection; 5272 mMultiple = false; 5273 5274 int length = array.length; 5275 mContainers = new Container[length]; 5276 for (int i = 0; i < length; i++) { 5277 mContainers[i] = new Container(); 5278 mContainers[i].mString = array[i]; 5279 mContainers[i].mEnabled = enabled[i]; 5280 mContainers[i].mId = i; 5281 } 5282 } 5283 5284 /* 5285 * Whenever the data set changes due to filtering, this class ensures 5286 * that the checked item remains checked. 5287 */ 5288 private class SingleDataSetObserver extends DataSetObserver { 5289 private long mCheckedId; 5290 private ListView mListView; 5291 private Adapter mAdapter; 5292 5293 /* 5294 * Create a new observer. 5295 * @param id The ID of the item to keep checked. 5296 * @param l ListView for getting and clearing the checked states 5297 * @param a Adapter for getting the IDs 5298 */ 5299 public SingleDataSetObserver(long id, ListView l, Adapter a) { 5300 mCheckedId = id; 5301 mListView = l; 5302 mAdapter = a; 5303 } 5304 5305 public void onChanged() { 5306 // The filter may have changed which item is checked. Find the 5307 // item that the ListView thinks is checked. 5308 int position = mListView.getCheckedItemPosition(); 5309 long id = mAdapter.getItemId(position); 5310 if (mCheckedId != id) { 5311 // Clear the ListView's idea of the checked item, since 5312 // it is incorrect 5313 mListView.clearChoices(); 5314 // Search for mCheckedId. If it is in the filtered list, 5315 // mark it as checked 5316 int count = mAdapter.getCount(); 5317 for (int i = 0; i < count; i++) { 5318 if (mAdapter.getItemId(i) == mCheckedId) { 5319 mListView.setItemChecked(i, true); 5320 break; 5321 } 5322 } 5323 } 5324 } 5325 5326 public void onInvalidate() {} 5327 } 5328 5329 public void run() { 5330 final ListView listView = (ListView) LayoutInflater.from(mContext) 5331 .inflate(com.android.internal.R.layout.select_dialog, null); 5332 final MyArrayListAdapter adapter = new 5333 MyArrayListAdapter(mContext, mContainers, mMultiple); 5334 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 5335 .setView(listView).setCancelable(true) 5336 .setInverseBackgroundForced(true); 5337 5338 if (mMultiple) { 5339 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 5340 public void onClick(DialogInterface dialog, int which) { 5341 mWebViewCore.sendMessage( 5342 EventHub.LISTBOX_CHOICES, 5343 adapter.getCount(), 0, 5344 listView.getCheckedItemPositions()); 5345 }}); 5346 b.setNegativeButton(android.R.string.cancel, 5347 new DialogInterface.OnClickListener() { 5348 public void onClick(DialogInterface dialog, int which) { 5349 mWebViewCore.sendMessage( 5350 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5351 }}); 5352 } 5353 final AlertDialog dialog = b.create(); 5354 listView.setAdapter(adapter); 5355 listView.setFocusableInTouchMode(true); 5356 // There is a bug (1250103) where the checks in a ListView with 5357 // multiple items selected are associated with the positions, not 5358 // the ids, so the items do not properly retain their checks when 5359 // filtered. Do not allow filtering on multiple lists until 5360 // that bug is fixed. 5361 5362 listView.setTextFilterEnabled(!mMultiple); 5363 if (mMultiple) { 5364 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 5365 int length = mSelectedArray.length; 5366 for (int i = 0; i < length; i++) { 5367 listView.setItemChecked(mSelectedArray[i], true); 5368 } 5369 } else { 5370 listView.setOnItemClickListener(new OnItemClickListener() { 5371 public void onItemClick(AdapterView parent, View v, 5372 int position, long id) { 5373 mWebViewCore.sendMessage( 5374 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 5375 dialog.dismiss(); 5376 } 5377 }); 5378 if (mSelection != -1) { 5379 listView.setSelection(mSelection); 5380 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 5381 listView.setItemChecked(mSelection, true); 5382 DataSetObserver observer = new SingleDataSetObserver( 5383 adapter.getItemId(mSelection), listView, adapter); 5384 adapter.registerDataSetObserver(observer); 5385 } 5386 } 5387 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 5388 public void onCancel(DialogInterface dialog) { 5389 mWebViewCore.sendMessage( 5390 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5391 } 5392 }); 5393 dialog.show(); 5394 } 5395 } 5396 5397 /* 5398 * Request a dropdown menu for a listbox with multiple selection. 5399 * 5400 * @param array Labels for the listbox. 5401 * @param enabledArray Which positions are enabled. 5402 * @param selectedArray Which positions are initally selected. 5403 */ 5404 void requestListBox(String[] array, boolean[]enabledArray, int[] 5405 selectedArray) { 5406 mPrivateHandler.post( 5407 new InvokeListBox(array, enabledArray, selectedArray)); 5408 } 5409 5410 /* 5411 * Request a dropdown menu for a listbox with single selection or a single 5412 * <select> element. 5413 * 5414 * @param array Labels for the listbox. 5415 * @param enabledArray Which positions are enabled. 5416 * @param selection Which position is initally selected. 5417 */ 5418 void requestListBox(String[] array, boolean[]enabledArray, int selection) { 5419 mPrivateHandler.post( 5420 new InvokeListBox(array, enabledArray, selection)); 5421 } 5422 5423 // called by JNI 5424 private void sendMoveMouse(int frame, int node, int x, int y) { 5425 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 5426 new WebViewCore.CursorData(frame, node, x, y)); 5427 } 5428 5429 /* 5430 * Send a mouse move event to the webcore thread. 5431 * 5432 * @param removeFocus Pass true if the "mouse" cursor is now over a node 5433 * which wants key events, but it is not the focus. This 5434 * will make the visual appear as though nothing is in 5435 * focus. Remove the WebTextView, if present, and stop 5436 * drawing the blinking caret. 5437 * called by JNI 5438 */ 5439 private void sendMoveMouseIfLatest(boolean removeFocus) { 5440 if (removeFocus) { 5441 clearTextEntry(); 5442 setFocusControllerInactive(); 5443 } 5444 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 5445 cursorData()); 5446 } 5447 5448 // called by JNI 5449 private void sendMotionUp(int touchGeneration, 5450 int frame, int node, int x, int y, int size) { 5451 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5452 touchUpData.mMoveGeneration = touchGeneration; 5453 touchUpData.mSize = size; 5454 touchUpData.mFrame = frame; 5455 touchUpData.mNode = node; 5456 touchUpData.mX = x; 5457 touchUpData.mY = y; 5458 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5459 } 5460 5461 5462 private int getScaledMaxXScroll() { 5463 int width; 5464 if (mHeightCanMeasure == false) { 5465 width = getViewWidth() / 4; 5466 } else { 5467 Rect visRect = new Rect(); 5468 calcOurVisibleRect(visRect); 5469 width = visRect.width() / 2; 5470 } 5471 // FIXME the divisor should be retrieved from somewhere 5472 return viewToContent(width); 5473 } 5474 5475 private int getScaledMaxYScroll() { 5476 int height; 5477 if (mHeightCanMeasure == false) { 5478 height = getViewHeight() / 4; 5479 } else { 5480 Rect visRect = new Rect(); 5481 calcOurVisibleRect(visRect); 5482 height = visRect.height() / 2; 5483 } 5484 // FIXME the divisor should be retrieved from somewhere 5485 // the closest thing today is hard-coded into ScrollView.java 5486 // (from ScrollView.java, line 363) int maxJump = height/2; 5487 return viewToContent(height); 5488 } 5489 5490 /** 5491 * Called by JNI to invalidate view 5492 */ 5493 private void viewInvalidate() { 5494 invalidate(); 5495 } 5496 5497 // return true if the key was handled 5498 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 5499 long time, boolean ignorePlugin) { 5500 if (mNativeClass == 0) { 5501 return false; 5502 } 5503 if (ignorePlugin == false && nativePluginEatsNavKey()) { 5504 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 5505 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 5506 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 5507 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 5508 , 0, 0, 0); 5509 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5510 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5511 return true; 5512 } 5513 mLastCursorTime = time; 5514 mLastCursorBounds = nativeGetCursorRingBounds(); 5515 boolean keyHandled 5516 = nativeMoveCursor(keyCode, count, noScroll) == false; 5517 if (DebugFlags.WEB_VIEW) { 5518 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 5519 + " mLastCursorTime=" + mLastCursorTime 5520 + " handled=" + keyHandled); 5521 } 5522 if (keyHandled == false || mHeightCanMeasure == false) { 5523 return keyHandled; 5524 } 5525 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 5526 if (contentCursorRingBounds.isEmpty()) return keyHandled; 5527 Rect viewCursorRingBounds = contentToView(contentCursorRingBounds); 5528 Rect visRect = new Rect(); 5529 calcOurVisibleRect(visRect); 5530 Rect outset = new Rect(visRect); 5531 int maxXScroll = visRect.width() / 2; 5532 int maxYScroll = visRect.height() / 2; 5533 outset.inset(-maxXScroll, -maxYScroll); 5534 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 5535 return keyHandled; 5536 } 5537 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 5538 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 5539 maxXScroll); 5540 if (maxH > 0) { 5541 pinScrollBy(maxH, 0, true, 0); 5542 } else { 5543 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 5544 -maxXScroll); 5545 if (maxH < 0) { 5546 pinScrollBy(maxH, 0, true, 0); 5547 } 5548 } 5549 if (mLastCursorBounds.isEmpty()) return keyHandled; 5550 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 5551 return keyHandled; 5552 } 5553 if (DebugFlags.WEB_VIEW) { 5554 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 5555 + contentCursorRingBounds); 5556 } 5557 requestRectangleOnScreen(viewCursorRingBounds); 5558 mUserScroll = true; 5559 return keyHandled; 5560 } 5561 5562 /** 5563 * Set the background color. It's white by default. Pass 5564 * zero to make the view transparent. 5565 * @param color the ARGB color described by Color.java 5566 */ 5567 public void setBackgroundColor(int color) { 5568 mBackgroundColor = color; 5569 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 5570 } 5571 5572 public void debugDump() { 5573 nativeDebugDump(); 5574 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 5575 } 5576 5577 /** 5578 * Update our cache with updatedText. 5579 * @param updatedText The new text to put in our cache. 5580 */ 5581 /* package */ void updateCachedTextfield(String updatedText) { 5582 // Also place our generation number so that when we look at the cache 5583 // we recognize that it is up to date. 5584 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 5585 } 5586 5587 /* package */ native void nativeClearCursor(); 5588 private native void nativeCreate(int ptr); 5589 private native int nativeCursorFramePointer(); 5590 private native Rect nativeCursorNodeBounds(); 5591 /* package */ native int nativeCursorNodePointer(); 5592 /* package */ native boolean nativeCursorMatchesFocus(); 5593 private native boolean nativeCursorIntersects(Rect visibleRect); 5594 private native boolean nativeCursorIsAnchor(); 5595 private native boolean nativeCursorIsPlugin(); 5596 private native boolean nativeCursorIsTextInput(); 5597 private native Point nativeCursorPosition(); 5598 private native String nativeCursorText(); 5599 /** 5600 * Returns true if the native cursor node says it wants to handle key events 5601 * (ala plugins). This can only be called if mNativeClass is non-zero! 5602 */ 5603 private native boolean nativeCursorWantsKeyEvents(); 5604 private native void nativeDebugDump(); 5605 private native void nativeDestroy(); 5606 private native void nativeDrawCursorRing(Canvas content); 5607 private native void nativeDrawMatches(Canvas canvas); 5608 private native void nativeDrawSelection(Canvas content 5609 , int x, int y, boolean extendSelection); 5610 private native void nativeDrawSelectionRegion(Canvas content); 5611 private native void nativeDumpDisplayTree(String urlOrNull); 5612 private native int nativeFindAll(String findLower, String findUpper); 5613 private native void nativeFindNext(boolean forward); 5614 private native boolean nativeFocusCandidateIsPassword(); 5615 private native boolean nativeFocusCandidateIsRtlText(); 5616 private native boolean nativeFocusCandidateIsTextField(); 5617 private native boolean nativeFocusCandidateIsTextInput(); 5618 private native int nativeFocusCandidateMaxLength(); 5619 /* package */ native String nativeFocusCandidateName(); 5620 private native Rect nativeFocusCandidateNodeBounds(); 5621 /* package */ native int nativeFocusCandidatePointer(); 5622 private native String nativeFocusCandidateText(); 5623 private native int nativeFocusCandidateTextSize(); 5624 /* package */ native int nativeFocusNodePointer(); 5625 private native Rect nativeGetCursorRingBounds(); 5626 private native Region nativeGetSelection(); 5627 private native boolean nativeHasCursorNode(); 5628 private native boolean nativeHasFocusNode(); 5629 private native void nativeHideCursor(); 5630 private native String nativeImageURI(int x, int y); 5631 private native void nativeInstrumentReport(); 5632 /* package */ native void nativeMoveCursorToNextTextInput(); 5633 // return true if the page has been scrolled 5634 private native boolean nativeMotionUp(int x, int y, int slop); 5635 // returns false if it handled the key 5636 private native boolean nativeMoveCursor(int keyCode, int count, 5637 boolean noScroll); 5638 private native int nativeMoveGeneration(); 5639 private native void nativeMoveSelection(int x, int y, 5640 boolean extendSelection); 5641 private native boolean nativePluginEatsNavKey(); 5642 // Like many other of our native methods, you must make sure that 5643 // mNativeClass is not null before calling this method. 5644 private native void nativeRecordButtons(boolean focused, 5645 boolean pressed, boolean invalidate); 5646 private native void nativeSelectBestAt(Rect rect); 5647 private native void nativeSetFindIsDown(); 5648 private native void nativeSetFollowedLink(boolean followed); 5649 private native void nativeSetHeightCanMeasure(boolean measure); 5650 // Returns a value corresponding to CachedFrame::ImeAction 5651 /* package */ native int nativeTextFieldAction(); 5652 private native int nativeTextGeneration(); 5653 // Never call this version except by updateCachedTextfield(String) - 5654 // we always want to pass in our generation number. 5655 private native void nativeUpdateCachedTextfield(String updatedText, 5656 int generation); 5657 private native void nativeUpdatePluginReceivesEvents(); 5658 // return NO_LEFTEDGE means failure. 5659 private static final int NO_LEFTEDGE = -1; 5660 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 5661} 5662