WebView.java revision b2359262b48bf33887c72be94b044cfdfd602858
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 /** 310 * Position of the last touch event. 311 */ 312 private float mLastTouchX; 313 private float mLastTouchY; 314 315 /** 316 * Time of the last touch event. 317 */ 318 private long mLastTouchTime; 319 320 /** 321 * Time of the last time sending touch event to WebViewCore 322 */ 323 private long mLastSentTouchTime; 324 325 /** 326 * The minimum elapsed time before sending another ACTION_MOVE event to 327 * WebViewCore. This really should be tuned for each type of the devices. 328 * For example in Google Map api test case, it takes Dream device at least 329 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 330 * triggering the layout and drawing the picture. While the same process 331 * takes 60+ms on the current high speed device. If we make 332 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 333 * to WebViewCore queue and the real layout and draw events will be pushed 334 * to further, which slows down the refresh rate. Choose 50 to favor the 335 * current high speed devices. For Dream like devices, 100 is a better 336 * choice. Maybe make this in the buildspec later. 337 */ 338 private static final int TOUCH_SENT_INTERVAL = 50; 339 340 /** 341 * Helper class to get velocity for fling 342 */ 343 VelocityTracker mVelocityTracker; 344 private int mMaximumFling; 345 346 // use this flag to control whether enabling the new double tap zoom 347 static final boolean ENABLE_DOUBLETAP_ZOOM = true; 348 349 /** 350 * Touch mode 351 */ 352 private int mTouchMode = TOUCH_DONE_MODE; 353 private static final int TOUCH_INIT_MODE = 1; 354 private static final int TOUCH_DRAG_START_MODE = 2; 355 private static final int TOUCH_DRAG_MODE = 3; 356 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 357 private static final int TOUCH_SHORTPRESS_MODE = 5; 358 private static final int TOUCH_DOUBLECLICK_MODE = 6; 359 private static final int TOUCH_DONE_MODE = 7; 360 private static final int TOUCH_SELECT_MODE = 8; 361 // touch mode values specific to scale+scroll 362 private static final int FIRST_SCROLL_ZOOM = 9; 363 private static final int SCROLL_ZOOM_ANIMATION_IN = 9; 364 private static final int SCROLL_ZOOM_ANIMATION_OUT = 10; 365 private static final int SCROLL_ZOOM_OUT = 11; 366 private static final int LAST_SCROLL_ZOOM = 11; 367 // end of touch mode values specific to scale+scroll 368 private static final int TOUCH_DOUBLE_TAP_MODE = 12; 369 370 // Whether to forward the touch events to WebCore 371 private boolean mForwardTouchEvents = false; 372 373 // Whether to prevent drag during touch. The initial value depends on 374 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 375 // take control of touch events unless it says no for touch down event. 376 private boolean mPreventDrag; 377 378 // To keep track of whether the current drag was initiated by a WebTextView, 379 // so that we know not to hide the cursor 380 boolean mDragFromTextInput; 381 382 // Whether or not to draw the cursor ring. 383 private boolean mDrawCursorRing = true; 384 385 // true if onPause has been called (and not onResume) 386 private boolean mIsPaused; 387 388 /** 389 * Customizable constant 390 */ 391 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 392 private int mTouchSlopSquare; 393 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 394 private int mDoubleTapSlopSquare; 395 // pre-computed density adjusted navigation slop 396 private int mNavSlop; 397 // This should be ViewConfiguration.getTapTimeout() 398 // But system time out is 100ms, which is too short for the browser. 399 // In the browser, if it switches out of tap too soon, jump tap won't work. 400 private static final int TAP_TIMEOUT = 200; 401 // This should be ViewConfiguration.getLongPressTimeout() 402 // But system time out is 500ms, which is too short for the browser. 403 // With a short timeout, it's difficult to treat trigger a short press. 404 private static final int LONG_PRESS_TIMEOUT = 1000; 405 // needed to avoid flinging after a pause of no movement 406 private static final int MIN_FLING_TIME = 250; 407 // The time that the Zoom Controls are visible before fading away 408 private static final long ZOOM_CONTROLS_TIMEOUT = 409 ViewConfiguration.getZoomControlsTimeout(); 410 // The amount of content to overlap between two screens when going through 411 // pages with the space bar, in pixels. 412 private static final int PAGE_SCROLL_OVERLAP = 24; 413 414 /** 415 * These prevent calling requestLayout if either dimension is fixed. This 416 * depends on the layout parameters and the measure specs. 417 */ 418 boolean mWidthCanMeasure; 419 boolean mHeightCanMeasure; 420 421 // Remember the last dimensions we sent to the native side so we can avoid 422 // sending the same dimensions more than once. 423 int mLastWidthSent; 424 int mLastHeightSent; 425 426 private int mContentWidth; // cache of value from WebViewCore 427 private int mContentHeight; // cache of value from WebViewCore 428 429 // Need to have the separate control for horizontal and vertical scrollbar 430 // style than the View's single scrollbar style 431 private boolean mOverlayHorizontalScrollbar = true; 432 private boolean mOverlayVerticalScrollbar = false; 433 434 // our standard speed. this way small distances will be traversed in less 435 // time than large distances, but we cap the duration, so that very large 436 // distances won't take too long to get there. 437 private static final int STD_SPEED = 480; // pixels per second 438 // time for the longest scroll animation 439 private static final int MAX_DURATION = 750; // milliseconds 440 private Scroller mScroller; 441 442 private boolean mWrapContent; 443 444 /** 445 * Private message ids 446 */ 447 private static final int REMEMBER_PASSWORD = 1; 448 private static final int NEVER_REMEMBER_PASSWORD = 2; 449 private static final int SWITCH_TO_SHORTPRESS = 3; 450 private static final int SWITCH_TO_LONGPRESS = 4; 451 private static final int RELEASE_SINGLE_TAP = 5; 452 private static final int REQUEST_FORM_DATA = 6; 453 private static final int SWITCH_TO_CLICK = 7; 454 private static final int RESUME_WEBCORE_UPDATE = 8; 455 456 //! arg1=x, arg2=y 457 static final int SCROLL_TO_MSG_ID = 10; 458 static final int SCROLL_BY_MSG_ID = 11; 459 //! arg1=x, arg2=y 460 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 461 //! arg1=x, arg2=y 462 static final int SYNC_SCROLL_TO_MSG_ID = 13; 463 static final int NEW_PICTURE_MSG_ID = 14; 464 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 465 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 466 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 467 static final int MOVE_OUT_OF_PLUGIN = 19; 468 static final int CLEAR_TEXT_ENTRY = 20; 469 static final int UPDATE_TEXT_SELECTION_MSG_ID = 21; 470 static final int UPDATE_CLIPBOARD = 22; 471 static final int LONG_PRESS_CENTER = 23; 472 static final int PREVENT_TOUCH_ID = 24; 473 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 474 // obj=Rect in doc coordinates 475 static final int INVAL_RECT_MSG_ID = 26; 476 static final int REQUEST_KEYBOARD = 27; 477 478 static final String[] HandlerDebugString = { 479 "REMEMBER_PASSWORD", // = 1; 480 "NEVER_REMEMBER_PASSWORD", // = 2; 481 "SWITCH_TO_SHORTPRESS", // = 3; 482 "SWITCH_TO_LONGPRESS", // = 4; 483 "RELEASE_SINGLE_TAP", // = 5; 484 "REQUEST_FORM_DATA", // = 6; 485 "SWITCH_TO_CLICK", // = 7; 486 "RESUME_WEBCORE_UPDATE", // = 8; 487 "9", 488 "SCROLL_TO_MSG_ID", // = 10; 489 "SCROLL_BY_MSG_ID", // = 11; 490 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 491 "SYNC_SCROLL_TO_MSG_ID", // = 13; 492 "NEW_PICTURE_MSG_ID", // = 14; 493 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 494 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 495 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 496 "18", // = 18; 497 "MOVE_OUT_OF_PLUGIN", // = 19; 498 "CLEAR_TEXT_ENTRY", // = 20; 499 "UPDATE_TEXT_SELECTION_MSG_ID", // = 21; 500 "UPDATE_CLIPBOARD", // = 22; 501 "LONG_PRESS_CENTER", // = 23; 502 "PREVENT_TOUCH_ID", // = 24; 503 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 504 "INVAL_RECT_MSG_ID", // = 26; 505 "REQUEST_KEYBOARD" // = 27; 506 }; 507 508 // default scale limit. Depending on the display density 509 private static float DEFAULT_MAX_ZOOM_SCALE; 510 private static float DEFAULT_MIN_ZOOM_SCALE; 511 // scale limit, which can be set through viewport meta tag in the web page 512 private float mMaxZoomScale; 513 private float mMinZoomScale; 514 private boolean mMinZoomScaleFixed = true; 515 516 // initial scale in percent. 0 means using default. 517 private int mInitialScale = 0; 518 519 // while in the zoom overview mode, the page's width is fully fit to the 520 // current window. The page is alive, in another words, you can click to 521 // follow the links. Double tap will toggle between zoom overview mode and 522 // the last zoom scale. 523 boolean mInZoomOverview = false; 524 525 // The viewing mode of this webview. Reported back to the WebChromeClient 526 // so we can hide and display the title bar as appropriate. 527 private int mViewingMode; 528 /** 529 * Not supporting overview vs reading mode 530 * @hide 531 */ 532 public final static int NO_VIEWING_MODE = 0; 533 /** 534 * Zoom overview mode. The page is zoomed all the way out, mInZoomOverview 535 * is true, and the title bar is showing. Double tapping will change to 536 * reading mode. 537 * @hide 538 */ 539 public final static int OVERVIEW_MODE = 1; 540 /** 541 * Reading mode. The page is at the level specified by the user, 542 * mInZoomOverview is false, and the title bar is not showing. Double 543 * tapping will change to zoom overview mode. 544 * @hide 545 */ 546 public final static int READING_MODE = 2; 547 /** 548 * Modified reading mode, which shows the title bar. mInZoomOverview is 549 * false, and double tapping will change to zoom overview mode. However, 550 * if the scrolling will change to reading mode. Used when swiping a 551 * tab into view which was in reading mode, unless it was a mobile site 552 * with zero scroll. 553 * @hide 554 */ 555 public final static int READING_MODE_WITH_TITLE_BAR = 3; 556 /** 557 * Another modified reading mode. For loading a mobile site, or swiping a 558 * tab into view which was displaying a mobile site in reading mode 559 * with zero scroll 560 * @hide 561 */ 562 public final static int TITLE_BAR_DISMISS_MODE = 4; 563 // Whether the current site is a mobile site. Determined when we receive 564 // NEW_PICTURE_MSG_ID to help determine how to handle double taps 565 private boolean mMobileSite; 566 567 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 568 // engadget always have wider mContentWidth no matter what viewport size is. 569 int mZoomOverviewWidth = WebViewCore.DEFAULT_VIEWPORT_WIDTH; 570 float mLastScale; 571 572 // default scale. Depending on the display density. 573 static int DEFAULT_SCALE_PERCENT; 574 private float mDefaultScale; 575 576 // set to true temporarily while the zoom control is being dragged 577 private boolean mPreviewZoomOnly = false; 578 579 // computed scale and inverse, from mZoomWidth. 580 private float mActualScale; 581 private float mInvActualScale; 582 // if this is non-zero, it is used on drawing rather than mActualScale 583 private float mZoomScale; 584 private float mInvInitialZoomScale; 585 private float mInvFinalZoomScale; 586 private int mInitialScrollX; 587 private int mInitialScrollY; 588 private long mZoomStart; 589 private static final int ZOOM_ANIMATION_LENGTH = 500; 590 591 private boolean mUserScroll = false; 592 593 private int mSnapScrollMode = SNAP_NONE; 594 private static final int SNAP_NONE = 1; 595 private static final int SNAP_X = 2; 596 private static final int SNAP_Y = 3; 597 private static final int SNAP_X_LOCK = 4; 598 private static final int SNAP_Y_LOCK = 5; 599 private boolean mSnapPositive; 600 601 // Used to match key downs and key ups 602 private boolean mGotKeyDown; 603 604 /* package */ static boolean mLogEvent = true; 605 private static final int EVENT_LOG_ZOOM_LEVEL_CHANGE = 70101; 606 private static final int EVENT_LOG_DOUBLE_TAP_DURATION = 70102; 607 608 // for event log 609 private long mLastTouchUpTime = 0; 610 611 /** 612 * URI scheme for telephone number 613 */ 614 public static final String SCHEME_TEL = "tel:"; 615 /** 616 * URI scheme for email address 617 */ 618 public static final String SCHEME_MAILTO = "mailto:"; 619 /** 620 * URI scheme for map address 621 */ 622 public static final String SCHEME_GEO = "geo:0,0?q="; 623 624 private int mBackgroundColor = Color.WHITE; 625 626 // Used to notify listeners of a new picture. 627 private PictureListener mPictureListener; 628 /** 629 * Interface to listen for new pictures as they change. 630 */ 631 public interface PictureListener { 632 /** 633 * Notify the listener that the picture has changed. 634 * @param view The WebView that owns the picture. 635 * @param picture The new picture. 636 */ 637 public void onNewPicture(WebView view, Picture picture); 638 } 639 640 // FIXME: Want to make this public, but need to change the API file. 641 public /*static*/ class HitTestResult { 642 /** 643 * Default HitTestResult, where the target is unknown 644 */ 645 public static final int UNKNOWN_TYPE = 0; 646 /** 647 * HitTestResult for hitting a HTML::a tag 648 */ 649 public static final int ANCHOR_TYPE = 1; 650 /** 651 * HitTestResult for hitting a phone number 652 */ 653 public static final int PHONE_TYPE = 2; 654 /** 655 * HitTestResult for hitting a map address 656 */ 657 public static final int GEO_TYPE = 3; 658 /** 659 * HitTestResult for hitting an email address 660 */ 661 public static final int EMAIL_TYPE = 4; 662 /** 663 * HitTestResult for hitting an HTML::img tag 664 */ 665 public static final int IMAGE_TYPE = 5; 666 /** 667 * HitTestResult for hitting a HTML::a tag which contains HTML::img 668 */ 669 public static final int IMAGE_ANCHOR_TYPE = 6; 670 /** 671 * HitTestResult for hitting a HTML::a tag with src=http 672 */ 673 public static final int SRC_ANCHOR_TYPE = 7; 674 /** 675 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 676 */ 677 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 678 /** 679 * HitTestResult for hitting an edit text area 680 */ 681 public static final int EDIT_TEXT_TYPE = 9; 682 683 private int mType; 684 private String mExtra; 685 686 HitTestResult() { 687 mType = UNKNOWN_TYPE; 688 } 689 690 private void setType(int type) { 691 mType = type; 692 } 693 694 private void setExtra(String extra) { 695 mExtra = extra; 696 } 697 698 public int getType() { 699 return mType; 700 } 701 702 public String getExtra() { 703 return mExtra; 704 } 705 } 706 707 // The View containing the zoom controls 708 private ExtendedZoomControls mZoomControls; 709 private Runnable mZoomControlRunnable; 710 711 private ZoomButtonsController mZoomButtonsController; 712 713 // These keep track of the center point of the zoom. They are used to 714 // determine the point around which we should zoom. 715 private float mZoomCenterX; 716 private float mZoomCenterY; 717 718 private ZoomButtonsController.OnZoomListener mZoomListener = 719 new ZoomButtonsController.OnZoomListener() { 720 721 public void onVisibilityChanged(boolean visible) { 722 if (visible) { 723 switchOutDrawHistory(); 724 updateZoomButtonsEnabled(); 725 } 726 } 727 728 public void onZoom(boolean zoomIn) { 729 if (zoomIn) { 730 zoomIn(); 731 } else { 732 zoomOut(); 733 } 734 735 updateZoomButtonsEnabled(); 736 } 737 }; 738 739 /** 740 * Construct a new WebView with a Context object. 741 * @param context A Context object used to access application assets. 742 */ 743 public WebView(Context context) { 744 this(context, null); 745 } 746 747 /** 748 * Construct a new WebView with layout parameters. 749 * @param context A Context object used to access application assets. 750 * @param attrs An AttributeSet passed to our parent. 751 */ 752 public WebView(Context context, AttributeSet attrs) { 753 this(context, attrs, com.android.internal.R.attr.webViewStyle); 754 } 755 756 /** 757 * Construct a new WebView with layout parameters and a default style. 758 * @param context A Context object used to access application assets. 759 * @param attrs An AttributeSet passed to our parent. 760 * @param defStyle The default style resource ID. 761 */ 762 public WebView(Context context, AttributeSet attrs, int defStyle) { 763 super(context, attrs, defStyle); 764 init(); 765 766 mCallbackProxy = new CallbackProxy(context, this); 767 mWebViewCore = new WebViewCore(context, this, mCallbackProxy); 768 mDatabase = WebViewDatabase.getInstance(context); 769 mScroller = new Scroller(context); 770 771 mViewManager = new ViewManager(this); 772 773 mZoomButtonsController = new ZoomButtonsController(this); 774 mZoomButtonsController.setOnZoomListener(mZoomListener); 775 // ZoomButtonsController positions the buttons at the bottom, but in 776 // the middle. Change their layout parameters so they appear on the 777 // right. 778 View controls = mZoomButtonsController.getZoomControls(); 779 ViewGroup.LayoutParams params = controls.getLayoutParams(); 780 if (params instanceof FrameLayout.LayoutParams) { 781 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 782 params; 783 frameParams.gravity = Gravity.RIGHT; 784 } 785 } 786 787 private void updateZoomButtonsEnabled() { 788 boolean canZoomIn = mActualScale < mMaxZoomScale; 789 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 790 if (!canZoomIn && !canZoomOut) { 791 // Hide the zoom in and out buttons, as well as the fit to page 792 // button, if the page cannot zoom 793 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 794 } else { 795 // Bring back the hidden zoom controls. 796 mZoomButtonsController.getZoomControls() 797 .setVisibility(View.VISIBLE); 798 // Set each one individually, as a page may be able to zoom in 799 // or out. 800 mZoomButtonsController.setZoomInEnabled(canZoomIn); 801 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 802 } 803 } 804 805 private void init() { 806 setWillNotDraw(false); 807 setFocusable(true); 808 setFocusableInTouchMode(true); 809 setClickable(true); 810 setLongClickable(true); 811 812 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 813 int slop = configuration.getScaledTouchSlop(); 814 mTouchSlopSquare = slop * slop; 815 mMinLockSnapReverseDistance = slop; 816 slop = configuration.getScaledDoubleTapSlop(); 817 mDoubleTapSlopSquare = slop * slop; 818 final float density = getContext().getResources().getDisplayMetrics().density; 819 // use one line height, 16 based on our current default font, for how 820 // far we allow a touch be away from the edge of a link 821 mNavSlop = (int) (16 * density); 822 // density adjusted scale factors 823 DEFAULT_SCALE_PERCENT = (int) (100 * density); 824 mDefaultScale = density; 825 mActualScale = density; 826 mInvActualScale = 1 / density; 827 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 828 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 829 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 830 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 831 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 832 } 833 834 /* package */void updateDefaultZoomDensity(int zoomDensity) { 835 final float density = getContext().getResources().getDisplayMetrics().density 836 * 100 / zoomDensity; 837 if (Math.abs(density - mDefaultScale) > 0.01) { 838 float scaleFactor = density / mDefaultScale; 839 // adjust the limits 840 mNavSlop = (int) (16 * density); 841 DEFAULT_SCALE_PERCENT = (int) (100 * density); 842 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 843 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 844 mDefaultScale = density; 845 mMaxZoomScale *= scaleFactor; 846 mMinZoomScale *= scaleFactor; 847 setNewZoomScale(mActualScale * scaleFactor, false); 848 } 849 } 850 851 /* package */ boolean onSavePassword(String schemePlusHost, String username, 852 String password, final Message resumeMsg) { 853 boolean rVal = false; 854 if (resumeMsg == null) { 855 // null resumeMsg implies saving password silently 856 mDatabase.setUsernamePassword(schemePlusHost, username, password); 857 } else { 858 final Message remember = mPrivateHandler.obtainMessage( 859 REMEMBER_PASSWORD); 860 remember.getData().putString("host", schemePlusHost); 861 remember.getData().putString("username", username); 862 remember.getData().putString("password", password); 863 remember.obj = resumeMsg; 864 865 final Message neverRemember = mPrivateHandler.obtainMessage( 866 NEVER_REMEMBER_PASSWORD); 867 neverRemember.getData().putString("host", schemePlusHost); 868 neverRemember.getData().putString("username", username); 869 neverRemember.getData().putString("password", password); 870 neverRemember.obj = resumeMsg; 871 872 new AlertDialog.Builder(getContext()) 873 .setTitle(com.android.internal.R.string.save_password_label) 874 .setMessage(com.android.internal.R.string.save_password_message) 875 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 876 new DialogInterface.OnClickListener() { 877 public void onClick(DialogInterface dialog, int which) { 878 resumeMsg.sendToTarget(); 879 } 880 }) 881 .setNeutralButton(com.android.internal.R.string.save_password_remember, 882 new DialogInterface.OnClickListener() { 883 public void onClick(DialogInterface dialog, int which) { 884 remember.sendToTarget(); 885 } 886 }) 887 .setNegativeButton(com.android.internal.R.string.save_password_never, 888 new DialogInterface.OnClickListener() { 889 public void onClick(DialogInterface dialog, int which) { 890 neverRemember.sendToTarget(); 891 } 892 }) 893 .setOnCancelListener(new OnCancelListener() { 894 public void onCancel(DialogInterface dialog) { 895 resumeMsg.sendToTarget(); 896 } 897 }).show(); 898 // Return true so that WebViewCore will pause while the dialog is 899 // up. 900 rVal = true; 901 } 902 return rVal; 903 } 904 905 @Override 906 public void setScrollBarStyle(int style) { 907 if (style == View.SCROLLBARS_INSIDE_INSET 908 || style == View.SCROLLBARS_OUTSIDE_INSET) { 909 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 910 } else { 911 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 912 } 913 super.setScrollBarStyle(style); 914 } 915 916 /** 917 * Specify whether the horizontal scrollbar has overlay style. 918 * @param overlay TRUE if horizontal scrollbar should have overlay style. 919 */ 920 public void setHorizontalScrollbarOverlay(boolean overlay) { 921 mOverlayHorizontalScrollbar = overlay; 922 } 923 924 /** 925 * Specify whether the vertical scrollbar has overlay style. 926 * @param overlay TRUE if vertical scrollbar should have overlay style. 927 */ 928 public void setVerticalScrollbarOverlay(boolean overlay) { 929 mOverlayVerticalScrollbar = overlay; 930 } 931 932 /** 933 * Return whether horizontal scrollbar has overlay style 934 * @return TRUE if horizontal scrollbar has overlay style. 935 */ 936 public boolean overlayHorizontalScrollbar() { 937 return mOverlayHorizontalScrollbar; 938 } 939 940 /** 941 * Return whether vertical scrollbar has overlay style 942 * @return TRUE if vertical scrollbar has overlay style. 943 */ 944 public boolean overlayVerticalScrollbar() { 945 return mOverlayVerticalScrollbar; 946 } 947 948 /* 949 * Return the width of the view where the content of WebView should render 950 * to. 951 */ 952 private int getViewWidth() { 953 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 954 return getWidth(); 955 } else { 956 return getWidth() - getVerticalScrollbarWidth(); 957 } 958 } 959 960 /* 961 * Return the height of the view where the content of WebView should render 962 * to. 963 */ 964 private int getViewHeight() { 965 if (!isHorizontalScrollBarEnabled() || mOverlayHorizontalScrollbar) { 966 return getHeight(); 967 } else { 968 return getHeight() - getHorizontalScrollbarHeight(); 969 } 970 } 971 972 /** 973 * @return The SSL certificate for the main top-level page or null if 974 * there is no certificate (the site is not secure). 975 */ 976 public SslCertificate getCertificate() { 977 return mCertificate; 978 } 979 980 /** 981 * Sets the SSL certificate for the main top-level page. 982 */ 983 public void setCertificate(SslCertificate certificate) { 984 // here, the certificate can be null (if the site is not secure) 985 mCertificate = certificate; 986 } 987 988 //------------------------------------------------------------------------- 989 // Methods called by activity 990 //------------------------------------------------------------------------- 991 992 /** 993 * Save the username and password for a particular host in the WebView's 994 * internal database. 995 * @param host The host that required the credentials. 996 * @param username The username for the given host. 997 * @param password The password for the given host. 998 */ 999 public void savePassword(String host, String username, String password) { 1000 mDatabase.setUsernamePassword(host, username, password); 1001 } 1002 1003 /** 1004 * Set the HTTP authentication credentials for a given host and realm. 1005 * 1006 * @param host The host for the credentials. 1007 * @param realm The realm for the credentials. 1008 * @param username The username for the password. If it is null, it means 1009 * password can't be saved. 1010 * @param password The password 1011 */ 1012 public void setHttpAuthUsernamePassword(String host, String realm, 1013 String username, String password) { 1014 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1015 } 1016 1017 /** 1018 * Retrieve the HTTP authentication username and password for a given 1019 * host & realm pair 1020 * 1021 * @param host The host for which the credentials apply. 1022 * @param realm The realm for which the credentials apply. 1023 * @return String[] if found, String[0] is username, which can be null and 1024 * String[1] is password. Return null if it can't find anything. 1025 */ 1026 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1027 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1028 } 1029 1030 /** 1031 * Destroy the internal state of the WebView. This method should be called 1032 * after the WebView has been removed from the view system. No other 1033 * methods may be called on a WebView after destroy. 1034 */ 1035 public void destroy() { 1036 clearTextEntry(); 1037 if (mWebViewCore != null) { 1038 // Set the handlers to null before destroying WebViewCore so no 1039 // more messages will be posted. 1040 mCallbackProxy.setWebViewClient(null); 1041 mCallbackProxy.setWebChromeClient(null); 1042 // Tell WebViewCore to destroy itself 1043 WebViewCore webViewCore = mWebViewCore; 1044 mWebViewCore = null; // prevent using partial webViewCore 1045 webViewCore.destroy(); 1046 // Remove any pending messages that might not be serviced yet. 1047 mPrivateHandler.removeCallbacksAndMessages(null); 1048 mCallbackProxy.removeCallbacksAndMessages(null); 1049 // Wake up the WebCore thread just in case it is waiting for a 1050 // javascript dialog. 1051 synchronized (mCallbackProxy) { 1052 mCallbackProxy.notify(); 1053 } 1054 } 1055 if (mNativeClass != 0) { 1056 nativeDestroy(); 1057 mNativeClass = 0; 1058 } 1059 } 1060 1061 /** 1062 * Enables platform notifications of data state and proxy changes. 1063 */ 1064 public static void enablePlatformNotifications() { 1065 Network.enablePlatformNotifications(); 1066 } 1067 1068 /** 1069 * If platform notifications are enabled, this should be called 1070 * from the Activity's onPause() or onStop(). 1071 */ 1072 public static void disablePlatformNotifications() { 1073 Network.disablePlatformNotifications(); 1074 } 1075 1076 /** 1077 * Sets JavaScript engine flags. 1078 * 1079 * @param flags JS engine flags in a String 1080 * 1081 * @hide pending API solidification 1082 */ 1083 public void setJsFlags(String flags) { 1084 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1085 } 1086 1087 /** 1088 * Inform WebView of the network state. This is used to set 1089 * the javascript property window.navigator.isOnline and 1090 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1091 * @param networkUp boolean indicating if network is available 1092 */ 1093 public void setNetworkAvailable(boolean networkUp) { 1094 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1095 networkUp ? 1 : 0, 0); 1096 } 1097 1098 /** 1099 * Save the state of this WebView used in 1100 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1101 * method no longer stores the display data for this WebView. The previous 1102 * behavior could potentially leak files if {@link #restoreState} was never 1103 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1104 * and restoring the display data. 1105 * @param outState The Bundle to store the WebView state. 1106 * @return The same copy of the back/forward list used to save the state. If 1107 * saveState fails, the returned list will be null. 1108 * @see #savePicture 1109 * @see #restorePicture 1110 */ 1111 public WebBackForwardList saveState(Bundle outState) { 1112 if (outState == null) { 1113 return null; 1114 } 1115 // We grab a copy of the back/forward list because a client of WebView 1116 // may have invalidated the history list by calling clearHistory. 1117 WebBackForwardList list = copyBackForwardList(); 1118 final int currentIndex = list.getCurrentIndex(); 1119 final int size = list.getSize(); 1120 // We should fail saving the state if the list is empty or the index is 1121 // not in a valid range. 1122 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1123 return null; 1124 } 1125 outState.putInt("index", currentIndex); 1126 // FIXME: This should just be a byte[][] instead of ArrayList but 1127 // Parcel.java does not have the code to handle multi-dimensional 1128 // arrays. 1129 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1130 for (int i = 0; i < size; i++) { 1131 WebHistoryItem item = list.getItemAtIndex(i); 1132 byte[] data = item.getFlattenedData(); 1133 if (data == null) { 1134 // It would be very odd to not have any data for a given history 1135 // item. And we will fail to rebuild the history list without 1136 // flattened data. 1137 return null; 1138 } 1139 history.add(data); 1140 } 1141 outState.putSerializable("history", history); 1142 if (mCertificate != null) { 1143 outState.putBundle("certificate", 1144 SslCertificate.saveState(mCertificate)); 1145 } 1146 return list; 1147 } 1148 1149 /** 1150 * Save the current display data to the Bundle given. Used in conjunction 1151 * with {@link #saveState}. 1152 * @param b A Bundle to store the display data. 1153 * @param dest The file to store the serialized picture data. Will be 1154 * overwritten with this WebView's picture data. 1155 * @return True if the picture was successfully saved. 1156 */ 1157 public boolean savePicture(Bundle b, File dest) { 1158 if (dest == null || b == null) { 1159 return false; 1160 } 1161 final Picture p = capturePicture(); 1162 try { 1163 final FileOutputStream out = new FileOutputStream(dest); 1164 p.writeToStream(out); 1165 out.close(); 1166 } catch (FileNotFoundException e){ 1167 e.printStackTrace(); 1168 } catch (IOException e) { 1169 e.printStackTrace(); 1170 } catch (RuntimeException e) { 1171 e.printStackTrace(); 1172 } 1173 if (dest.length() > 0) { 1174 b.putInt("scrollX", mScrollX); 1175 b.putInt("scrollY", mScrollY); 1176 b.putFloat("scale", mActualScale); 1177 if (mInZoomOverview) { 1178 b.putFloat("lastScale", mLastScale); 1179 } 1180 b.putBoolean("mobile", mMobileSite); 1181 return true; 1182 } 1183 return false; 1184 } 1185 1186 /** 1187 * Restore the display data that was save in {@link #savePicture}. Used in 1188 * conjunction with {@link #restoreState}. 1189 * @param b A Bundle containing the saved display data. 1190 * @param src The file where the picture data was stored. 1191 * @return True if the picture was successfully restored. 1192 */ 1193 public boolean restorePicture(Bundle b, File src) { 1194 if (src == null || b == null) { 1195 return false; 1196 } 1197 if (src.exists()) { 1198 Picture p = null; 1199 try { 1200 final FileInputStream in = new FileInputStream(src); 1201 p = Picture.createFromStream(in); 1202 in.close(); 1203 } catch (FileNotFoundException e){ 1204 e.printStackTrace(); 1205 } catch (RuntimeException e) { 1206 e.printStackTrace(); 1207 } catch (IOException e) { 1208 e.printStackTrace(); 1209 } 1210 if (p != null) { 1211 int sx = b.getInt("scrollX", 0); 1212 int sy = b.getInt("scrollY", 0); 1213 float scale = b.getFloat("scale", 1.0f); 1214 mDrawHistory = true; 1215 mHistoryPicture = p; 1216 mScrollX = sx; 1217 mScrollY = sy; 1218 mHistoryWidth = Math.round(p.getWidth() * scale); 1219 mHistoryHeight = Math.round(p.getHeight() * scale); 1220 // as getWidth() / getHeight() of the view are not 1221 // available yet, set up mActualScale, so that when 1222 // onSizeChanged() is called, the rest will be set 1223 // correctly 1224 mActualScale = scale; 1225 float lastScale = b.getFloat("lastScale", -1.0f); 1226 mMobileSite = b.getBoolean("mobile", false); 1227 if (lastScale > 0) { 1228 mInZoomOverview = true; 1229 mViewingMode = OVERVIEW_MODE; 1230 mLastScale = lastScale; 1231 } else { 1232 mInZoomOverview = false; 1233 if (mMobileSite && (mScrollX | mScrollY) == 0) { 1234 mViewingMode = TITLE_BAR_DISMISS_MODE; 1235 } else { 1236 mViewingMode = READING_MODE_WITH_TITLE_BAR; 1237 } 1238 } 1239 mCallbackProxy.uiOnChangeViewingMode(mViewingMode); 1240 invalidate(); 1241 return true; 1242 } 1243 } 1244 return false; 1245 } 1246 1247 /** 1248 * Restore the state of this WebView from the given map used in 1249 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1250 * be called to restore the state of the WebView before using the object. If 1251 * it is called after the WebView has had a chance to build state (load 1252 * pages, create a back/forward list, etc.) there may be undesirable 1253 * side-effects. Please note that this method no longer restores the 1254 * display data for this WebView. See {@link #savePicture} and {@link 1255 * #restorePicture} for saving and restoring the display data. 1256 * @param inState The incoming Bundle of state. 1257 * @return The restored back/forward list or null if restoreState failed. 1258 * @see #savePicture 1259 * @see #restorePicture 1260 */ 1261 public WebBackForwardList restoreState(Bundle inState) { 1262 WebBackForwardList returnList = null; 1263 if (inState == null) { 1264 return returnList; 1265 } 1266 if (inState.containsKey("index") && inState.containsKey("history")) { 1267 mCertificate = SslCertificate.restoreState( 1268 inState.getBundle("certificate")); 1269 1270 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1271 final int index = inState.getInt("index"); 1272 // We can't use a clone of the list because we need to modify the 1273 // shared copy, so synchronize instead to prevent concurrent 1274 // modifications. 1275 synchronized (list) { 1276 final List<byte[]> history = 1277 (List<byte[]>) inState.getSerializable("history"); 1278 final int size = history.size(); 1279 // Check the index bounds so we don't crash in native code while 1280 // restoring the history index. 1281 if (index < 0 || index >= size) { 1282 return null; 1283 } 1284 for (int i = 0; i < size; i++) { 1285 byte[] data = history.remove(0); 1286 if (data == null) { 1287 // If we somehow have null data, we cannot reconstruct 1288 // the item and thus our history list cannot be rebuilt. 1289 return null; 1290 } 1291 WebHistoryItem item = new WebHistoryItem(data); 1292 list.addHistoryItem(item); 1293 } 1294 // Grab the most recent copy to return to the caller. 1295 returnList = copyBackForwardList(); 1296 // Update the copy to have the correct index. 1297 returnList.setCurrentIndex(index); 1298 } 1299 // Remove all pending messages because we are restoring previous 1300 // state. 1301 mWebViewCore.removeMessages(); 1302 // Send a restore state message. 1303 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1304 } 1305 return returnList; 1306 } 1307 1308 /** 1309 * Load the given url. 1310 * @param url The url of the resource to load. 1311 */ 1312 public void loadUrl(String url) { 1313 if (url == null) { 1314 return; 1315 } 1316 switchOutDrawHistory(); 1317 mWebViewCore.sendMessage(EventHub.LOAD_URL, url); 1318 clearTextEntry(); 1319 } 1320 1321 /** 1322 * Load the url with postData using "POST" method into the WebView. If url 1323 * is not a network url, it will be loaded with {link 1324 * {@link #loadUrl(String)} instead. 1325 * 1326 * @param url The url of the resource to load. 1327 * @param postData The data will be passed to "POST" request. 1328 */ 1329 public void postUrl(String url, byte[] postData) { 1330 if (URLUtil.isNetworkUrl(url)) { 1331 switchOutDrawHistory(); 1332 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1333 arg.mUrl = url; 1334 arg.mPostData = postData; 1335 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1336 clearTextEntry(); 1337 } else { 1338 loadUrl(url); 1339 } 1340 } 1341 1342 /** 1343 * Load the given data into the WebView. This will load the data into 1344 * WebView using the data: scheme. Content loaded through this mechanism 1345 * does not have the ability to load content from the network. 1346 * @param data A String of data in the given encoding. 1347 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1348 * @param encoding The encoding of the data. i.e. utf-8, base64 1349 */ 1350 public void loadData(String data, String mimeType, String encoding) { 1351 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1352 } 1353 1354 /** 1355 * Load the given data into the WebView, use the provided URL as the base 1356 * URL for the content. The base URL is the URL that represents the page 1357 * that is loaded through this interface. As such, it is used for the 1358 * history entry and to resolve any relative URLs. The failUrl is used if 1359 * browser fails to load the data provided. If it is empty or null, and the 1360 * load fails, then no history entry is created. 1361 * <p> 1362 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1363 * files through "file:///android_asset/" for the sub resources is more 1364 * restricted. If you provide null or empty string as baseUrl, you won't be 1365 * able to access asset files. If the baseUrl is anything other than 1366 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1367 * sub resources. 1368 * 1369 * @param baseUrl Url to resolve relative paths with, if null defaults to 1370 * "about:blank" 1371 * @param data A String of data in the given encoding. 1372 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1373 * defaults to "text/html" 1374 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1375 * @param failUrl URL to use if the content fails to load or null. 1376 */ 1377 public void loadDataWithBaseURL(String baseUrl, String data, 1378 String mimeType, String encoding, String failUrl) { 1379 1380 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1381 loadData(data, mimeType, encoding); 1382 return; 1383 } 1384 switchOutDrawHistory(); 1385 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1386 arg.mBaseUrl = baseUrl; 1387 arg.mData = data; 1388 arg.mMimeType = mimeType; 1389 arg.mEncoding = encoding; 1390 arg.mFailUrl = failUrl; 1391 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1392 clearTextEntry(); 1393 } 1394 1395 /** 1396 * Stop the current load. 1397 */ 1398 public void stopLoading() { 1399 // TODO: should we clear all the messages in the queue before sending 1400 // STOP_LOADING? 1401 switchOutDrawHistory(); 1402 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1403 } 1404 1405 /** 1406 * Reload the current url. 1407 */ 1408 public void reload() { 1409 switchOutDrawHistory(); 1410 mWebViewCore.sendMessage(EventHub.RELOAD); 1411 } 1412 1413 /** 1414 * Return true if this WebView has a back history item. 1415 * @return True iff this WebView has a back history item. 1416 */ 1417 public boolean canGoBack() { 1418 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1419 synchronized (l) { 1420 if (l.getClearPending()) { 1421 return false; 1422 } else { 1423 return l.getCurrentIndex() > 0; 1424 } 1425 } 1426 } 1427 1428 /** 1429 * Go back in the history of this WebView. 1430 */ 1431 public void goBack() { 1432 goBackOrForward(-1); 1433 } 1434 1435 /** 1436 * Return true if this WebView has a forward history item. 1437 * @return True iff this Webview has a forward history item. 1438 */ 1439 public boolean canGoForward() { 1440 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1441 synchronized (l) { 1442 if (l.getClearPending()) { 1443 return false; 1444 } else { 1445 return l.getCurrentIndex() < l.getSize() - 1; 1446 } 1447 } 1448 } 1449 1450 /** 1451 * Go forward in the history of this WebView. 1452 */ 1453 public void goForward() { 1454 goBackOrForward(1); 1455 } 1456 1457 /** 1458 * Return true if the page can go back or forward the given 1459 * number of steps. 1460 * @param steps The negative or positive number of steps to move the 1461 * history. 1462 */ 1463 public boolean canGoBackOrForward(int steps) { 1464 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1465 synchronized (l) { 1466 if (l.getClearPending()) { 1467 return false; 1468 } else { 1469 int newIndex = l.getCurrentIndex() + steps; 1470 return newIndex >= 0 && newIndex < l.getSize(); 1471 } 1472 } 1473 } 1474 1475 /** 1476 * Go to the history item that is the number of steps away from 1477 * the current item. Steps is negative if backward and positive 1478 * if forward. 1479 * @param steps The number of steps to take back or forward in the back 1480 * forward list. 1481 */ 1482 public void goBackOrForward(int steps) { 1483 goBackOrForward(steps, false); 1484 } 1485 1486 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1487 // every time we go back or forward, we want to reset the 1488 // WebView certificate: 1489 // if the new site is secure, we will reload it and get a 1490 // new certificate set; 1491 // if the new site is not secure, the certificate must be 1492 // null, and that will be the case 1493 mCertificate = null; 1494 if (steps != 0) { 1495 clearTextEntry(); 1496 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1497 ignoreSnapshot ? 1 : 0); 1498 } 1499 } 1500 1501 private boolean extendScroll(int y) { 1502 int finalY = mScroller.getFinalY(); 1503 int newY = pinLocY(finalY + y); 1504 if (newY == finalY) return false; 1505 mScroller.setFinalY(newY); 1506 mScroller.extendDuration(computeDuration(0, y)); 1507 return true; 1508 } 1509 1510 /** 1511 * Scroll the contents of the view up by half the view size 1512 * @param top true to jump to the top of the page 1513 * @return true if the page was scrolled 1514 */ 1515 public boolean pageUp(boolean top) { 1516 if (mNativeClass == 0) { 1517 return false; 1518 } 1519 nativeClearCursor(); // start next trackball movement from page edge 1520 if (top) { 1521 // go to the top of the document 1522 return pinScrollTo(mScrollX, 0, true, 0); 1523 } 1524 // Page up 1525 int h = getHeight(); 1526 int y; 1527 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1528 y = -h + PAGE_SCROLL_OVERLAP; 1529 } else { 1530 y = -h / 2; 1531 } 1532 mUserScroll = true; 1533 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1534 : extendScroll(y); 1535 } 1536 1537 /** 1538 * Scroll the contents of the view down by half the page size 1539 * @param bottom true to jump to bottom of page 1540 * @return true if the page was scrolled 1541 */ 1542 public boolean pageDown(boolean bottom) { 1543 if (mNativeClass == 0) { 1544 return false; 1545 } 1546 nativeClearCursor(); // start next trackball movement from page edge 1547 if (bottom) { 1548 return pinScrollTo(mScrollX, mContentHeight, true, 0); 1549 } 1550 // Page down. 1551 int h = getHeight(); 1552 int y; 1553 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1554 y = h - PAGE_SCROLL_OVERLAP; 1555 } else { 1556 y = h / 2; 1557 } 1558 mUserScroll = true; 1559 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1560 : extendScroll(y); 1561 } 1562 1563 /** 1564 * Clear the view so that onDraw() will draw nothing but white background, 1565 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1566 */ 1567 public void clearView() { 1568 mContentWidth = 0; 1569 mContentHeight = 0; 1570 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1571 } 1572 1573 /** 1574 * Return a new picture that captures the current display of the webview. 1575 * This is a copy of the display, and will be unaffected if the webview 1576 * later loads a different URL. 1577 * 1578 * @return a picture containing the current contents of the view. Note this 1579 * picture is of the entire document, and is not restricted to the 1580 * bounds of the view. 1581 */ 1582 public Picture capturePicture() { 1583 if (null == mWebViewCore) return null; // check for out of memory tab 1584 return mWebViewCore.copyContentPicture(); 1585 } 1586 1587 /** 1588 * Return true if the browser is displaying a TextView for text input. 1589 */ 1590 private boolean inEditingMode() { 1591 return mWebTextView != null && mWebTextView.getParent() != null 1592 && mWebTextView.hasFocus(); 1593 } 1594 1595 private void clearTextEntry() { 1596 if (inEditingMode()) { 1597 mWebTextView.remove(); 1598 } 1599 } 1600 1601 /** 1602 * Return the current scale of the WebView 1603 * @return The current scale. 1604 */ 1605 public float getScale() { 1606 return mActualScale; 1607 } 1608 1609 /** 1610 * Set the initial scale for the WebView. 0 means default. If 1611 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1612 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1613 * WebView starts will this value as initial scale. 1614 * 1615 * @param scaleInPercent The initial scale in percent. 1616 */ 1617 public void setInitialScale(int scaleInPercent) { 1618 mInitialScale = scaleInPercent; 1619 } 1620 1621 /** 1622 * Invoke the graphical zoom picker widget for this WebView. This will 1623 * result in the zoom widget appearing on the screen to control the zoom 1624 * level of this WebView. 1625 */ 1626 public void invokeZoomPicker() { 1627 if (!getSettings().supportZoom()) { 1628 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1629 return; 1630 } 1631 clearTextEntry(); 1632 if (getSettings().getBuiltInZoomControls()) { 1633 mZoomButtonsController.setVisible(true); 1634 } else { 1635 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1636 mPrivateHandler.postDelayed(mZoomControlRunnable, 1637 ZOOM_CONTROLS_TIMEOUT); 1638 } 1639 } 1640 1641 /** 1642 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1643 * is found and the anchor has a non-javascript url, the HitTestResult type 1644 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1645 * anchor does not have a url or if it is a javascript url, the type will 1646 * be UNKNOWN_TYPE and the url has to be retrieved through 1647 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1648 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1649 * the "extra" field. A type of 1650 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1651 * a child node. If a phone number is found, the HitTestResult type is set 1652 * to PHONE_TYPE and the phone number is set in the "extra" field of 1653 * HitTestResult. If a map address is found, the HitTestResult type is set 1654 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1655 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1656 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1657 * HitTestResult type is set to UNKNOWN_TYPE. 1658 */ 1659 public HitTestResult getHitTestResult() { 1660 if (mNativeClass == 0) { 1661 return null; 1662 } 1663 1664 HitTestResult result = new HitTestResult(); 1665 if (nativeHasCursorNode()) { 1666 if (nativeCursorIsTextInput()) { 1667 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1668 } else { 1669 String text = nativeCursorText(); 1670 if (text != null) { 1671 if (text.startsWith(SCHEME_TEL)) { 1672 result.setType(HitTestResult.PHONE_TYPE); 1673 result.setExtra(text.substring(SCHEME_TEL.length())); 1674 } else if (text.startsWith(SCHEME_MAILTO)) { 1675 result.setType(HitTestResult.EMAIL_TYPE); 1676 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1677 } else if (text.startsWith(SCHEME_GEO)) { 1678 result.setType(HitTestResult.GEO_TYPE); 1679 result.setExtra(URLDecoder.decode(text 1680 .substring(SCHEME_GEO.length()))); 1681 } else if (nativeCursorIsAnchor()) { 1682 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1683 result.setExtra(text); 1684 } 1685 } 1686 } 1687 } 1688 int type = result.getType(); 1689 if (type == HitTestResult.UNKNOWN_TYPE 1690 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1691 // Now check to see if it is an image. 1692 int contentX = viewToContent((int) mLastTouchX + mScrollX); 1693 int contentY = viewToContent((int) mLastTouchY + mScrollY); 1694 String text = nativeImageURI(contentX, contentY); 1695 if (text != null) { 1696 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1697 HitTestResult.IMAGE_TYPE : 1698 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1699 result.setExtra(text); 1700 } 1701 } 1702 return result; 1703 } 1704 1705 /** 1706 * Request the href of an anchor element due to getFocusNodePath returning 1707 * "href." If hrefMsg is null, this method returns immediately and does not 1708 * dispatch hrefMsg to its target. 1709 * 1710 * @param hrefMsg This message will be dispatched with the result of the 1711 * request as the data member with "url" as key. The result can 1712 * be null. 1713 */ 1714 // FIXME: API change required to change the name of this function. We now 1715 // look at the cursor node, and not the focus node. Also, what is 1716 // getFocusNodePath? 1717 public void requestFocusNodeHref(Message hrefMsg) { 1718 if (hrefMsg == null || mNativeClass == 0) { 1719 return; 1720 } 1721 if (nativeCursorIsAnchor()) { 1722 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1723 nativeCursorFramePointer(), nativeCursorNodePointer(), 1724 hrefMsg); 1725 } 1726 } 1727 1728 /** 1729 * Request the url of the image last touched by the user. msg will be sent 1730 * to its target with a String representing the url as its object. 1731 * 1732 * @param msg This message will be dispatched with the result of the request 1733 * as the data member with "url" as key. The result can be null. 1734 */ 1735 public void requestImageRef(Message msg) { 1736 int contentX = viewToContent((int) mLastTouchX + mScrollX); 1737 int contentY = viewToContent((int) mLastTouchY + mScrollY); 1738 String ref = nativeImageURI(contentX, contentY); 1739 Bundle data = msg.getData(); 1740 data.putString("url", ref); 1741 msg.setData(data); 1742 msg.sendToTarget(); 1743 } 1744 1745 private static int pinLoc(int x, int viewMax, int docMax) { 1746// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1747 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1748 // pin the short document to the top/left of the screen 1749 x = 0; 1750// Log.d(LOGTAG, "--- center " + x); 1751 } else if (x < 0) { 1752 x = 0; 1753// Log.d(LOGTAG, "--- zero"); 1754 } else if (x + viewMax > docMax) { 1755 x = docMax - viewMax; 1756// Log.d(LOGTAG, "--- pin " + x); 1757 } 1758 return x; 1759 } 1760 1761 // Expects x in view coordinates 1762 private int pinLocX(int x) { 1763 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1764 } 1765 1766 // Expects y in view coordinates 1767 private int pinLocY(int y) { 1768 return pinLoc(y, getViewHeight(), computeVerticalScrollRange()); 1769 } 1770 1771 /*package*/ int viewToContent(int x) { 1772 return Math.round(x * mInvActualScale); 1773 } 1774 1775 /*package*/ int contentToView(int x) { 1776 return Math.round(x * mActualScale); 1777 } 1778 1779 // Called by JNI to invalidate the View, given rectangle coordinates in 1780 // content space 1781 private void viewInvalidate(int l, int t, int r, int b) { 1782 invalidate(contentToView(l), contentToView(t), contentToView(r), 1783 contentToView(b)); 1784 } 1785 1786 // Called by JNI to invalidate the View after a delay, given rectangle 1787 // coordinates in content space 1788 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1789 postInvalidateDelayed(delay, contentToView(l), contentToView(t), 1790 contentToView(r), contentToView(b)); 1791 } 1792 1793 private Rect contentToView(Rect x) { 1794 return new Rect(contentToView(x.left), contentToView(x.top) 1795 , contentToView(x.right), contentToView(x.bottom)); 1796 } 1797 1798 /* call from webcoreview.draw(), so we're still executing in the UI thread 1799 */ 1800 private void recordNewContentSize(int w, int h, boolean updateLayout) { 1801 1802 // premature data from webkit, ignore 1803 if ((w | h) == 0) { 1804 return; 1805 } 1806 1807 // don't abort a scroll animation if we didn't change anything 1808 if (mContentWidth != w || mContentHeight != h) { 1809 // record new dimensions 1810 mContentWidth = w; 1811 mContentHeight = h; 1812 // If history Picture is drawn, don't update scroll. They will be 1813 // updated when we get out of that mode. 1814 if (!mDrawHistory) { 1815 // repin our scroll, taking into account the new content size 1816 int oldX = mScrollX; 1817 int oldY = mScrollY; 1818 mScrollX = pinLocX(mScrollX); 1819 mScrollY = pinLocY(mScrollY); 1820 // android.util.Log.d("skia", "recordNewContentSize - 1821 // abortAnimation"); 1822 mScroller.abortAnimation(); // just in case 1823 if (oldX != mScrollX || oldY != mScrollY) { 1824 sendOurVisibleRect(); 1825 } 1826 } 1827 } 1828 contentSizeChanged(updateLayout); 1829 } 1830 1831 private void setNewZoomScale(float scale, boolean force) { 1832 if (scale < mMinZoomScale) { 1833 scale = mMinZoomScale; 1834 } else if (scale > mMaxZoomScale) { 1835 scale = mMaxZoomScale; 1836 } 1837 if (scale != mActualScale || force) { 1838 if (mDrawHistory) { 1839 // If history Picture is drawn, don't update scroll. They will 1840 // be updated when we get out of that mode. 1841 if (scale != mActualScale && !mPreviewZoomOnly) { 1842 mCallbackProxy.onScaleChanged(mActualScale, scale); 1843 } 1844 mActualScale = scale; 1845 mInvActualScale = 1 / scale; 1846 if (!mPreviewZoomOnly) { 1847 sendViewSizeZoom(); 1848 } 1849 } else { 1850 // update our scroll so we don't appear to jump 1851 // i.e. keep the center of the doc in the center of the view 1852 1853 int oldX = mScrollX; 1854 int oldY = mScrollY; 1855 float ratio = scale * mInvActualScale; // old inverse 1856 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 1857 float sy = ratio * oldY + (ratio - 1) * mZoomCenterY; 1858 1859 // now update our new scale and inverse 1860 if (scale != mActualScale && !mPreviewZoomOnly) { 1861 mCallbackProxy.onScaleChanged(mActualScale, scale); 1862 } 1863 mActualScale = scale; 1864 mInvActualScale = 1 / scale; 1865 1866 // Scale all the child views 1867 mViewManager.scaleAll(); 1868 1869 // as we don't have animation for scaling, don't do animation 1870 // for scrolling, as it causes weird intermediate state 1871 // pinScrollTo(Math.round(sx), Math.round(sy)); 1872 mScrollX = pinLocX(Math.round(sx)); 1873 mScrollY = pinLocY(Math.round(sy)); 1874 1875 if (!mPreviewZoomOnly) { 1876 sendViewSizeZoom(); 1877 sendOurVisibleRect(); 1878 } 1879 } 1880 } 1881 } 1882 1883 // Used to avoid sending many visible rect messages. 1884 private Rect mLastVisibleRectSent; 1885 private Rect mLastGlobalRect; 1886 1887 private Rect sendOurVisibleRect() { 1888 Rect rect = new Rect(); 1889 calcOurContentVisibleRect(rect); 1890 // Rect.equals() checks for null input. 1891 if (!rect.equals(mLastVisibleRectSent)) { 1892 Point pos = new Point(rect.left, rect.top); 1893 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 1894 nativeMoveGeneration(), 0, pos); 1895 mLastVisibleRectSent = rect; 1896 } 1897 Rect globalRect = new Rect(); 1898 if (getGlobalVisibleRect(globalRect) 1899 && !globalRect.equals(mLastGlobalRect)) { 1900 if (DebugFlags.WEB_VIEW) { 1901 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 1902 + globalRect.top + ",r=" + globalRect.right + ",b=" 1903 + globalRect.bottom); 1904 } 1905 // TODO: the global offset is only used by windowRect() 1906 // in ChromeClientAndroid ; other clients such as touch 1907 // and mouse events could return view + screen relative points. 1908 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 1909 mLastGlobalRect = globalRect; 1910 } 1911 return rect; 1912 } 1913 1914 // Sets r to be the visible rectangle of our webview in view coordinates 1915 private void calcOurVisibleRect(Rect r) { 1916 Point p = new Point(); 1917 getGlobalVisibleRect(r, p); 1918 r.offset(-p.x, -p.y); 1919 if (mFindIsUp) { 1920 r.bottom -= FIND_HEIGHT; 1921 } 1922 } 1923 1924 // Sets r to be our visible rectangle in content coordinates 1925 private void calcOurContentVisibleRect(Rect r) { 1926 calcOurVisibleRect(r); 1927 r.left = viewToContent(r.left); 1928 r.top = viewToContent(r.top); 1929 r.right = viewToContent(r.right); 1930 r.bottom = viewToContent(r.bottom); 1931 } 1932 1933 static class ViewSizeData { 1934 int mWidth; 1935 int mHeight; 1936 int mTextWrapWidth; 1937 float mScale; 1938 } 1939 1940 /** 1941 * Compute unzoomed width and height, and if they differ from the last 1942 * values we sent, send them to webkit (to be used has new viewport) 1943 * 1944 * @return true if new values were sent 1945 */ 1946 private boolean sendViewSizeZoom() { 1947 int viewWidth = getViewWidth(); 1948 int newWidth = Math.round(viewWidth * mInvActualScale); 1949 int newHeight = Math.round(getViewHeight() * mInvActualScale); 1950 /* 1951 * Because the native side may have already done a layout before the 1952 * View system was able to measure us, we have to send a height of 0 to 1953 * remove excess whitespace when we grow our width. This will trigger a 1954 * layout and a change in content size. This content size change will 1955 * mean that contentSizeChanged will either call this method directly or 1956 * indirectly from onSizeChanged. 1957 */ 1958 if (newWidth > mLastWidthSent && mWrapContent) { 1959 newHeight = 0; 1960 } 1961 // Avoid sending another message if the dimensions have not changed. 1962 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 1963 ViewSizeData data = new ViewSizeData(); 1964 data.mWidth = newWidth; 1965 data.mHeight = newHeight; 1966 // while in zoom overview mode, the text are wrapped to the screen 1967 // width matching mLastScale. So that we don't trigger re-flow while 1968 // toggling between overview mode and normal mode. 1969 data.mTextWrapWidth = mInZoomOverview ? Math.round(viewWidth 1970 / mLastScale) : newWidth; 1971 data.mScale = mActualScale; 1972 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 1973 mLastWidthSent = newWidth; 1974 mLastHeightSent = newHeight; 1975 return true; 1976 } 1977 return false; 1978 } 1979 1980 @Override 1981 protected int computeHorizontalScrollRange() { 1982 if (mDrawHistory) { 1983 return mHistoryWidth; 1984 } else { 1985 return contentToView(mContentWidth); 1986 } 1987 } 1988 1989 // Make sure this stays in sync with the actual height of the FindDialog. 1990 private static final int FIND_HEIGHT = 79; 1991 1992 @Override 1993 protected int computeVerticalScrollRange() { 1994 if (mDrawHistory) { 1995 return mHistoryHeight; 1996 } else { 1997 int height = contentToView(mContentHeight); 1998 if (mFindIsUp) { 1999 height += FIND_HEIGHT; 2000 } 2001 return height; 2002 } 2003 } 2004 2005 /** 2006 * Get the url for the current page. This is not always the same as the url 2007 * passed to WebViewClient.onPageStarted because although the load for 2008 * that url has begun, the current page may not have changed. 2009 * @return The url for the current page. 2010 */ 2011 public String getUrl() { 2012 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2013 return h != null ? h.getUrl() : null; 2014 } 2015 2016 /** 2017 * Get the original url for the current page. This is not always the same 2018 * as the url passed to WebViewClient.onPageStarted because although the 2019 * load for that url has begun, the current page may not have changed. 2020 * Also, there may have been redirects resulting in a different url to that 2021 * originally requested. 2022 * @return The url that was originally requested for the current page. 2023 */ 2024 public String getOriginalUrl() { 2025 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2026 return h != null ? h.getOriginalUrl() : null; 2027 } 2028 2029 /** 2030 * Get the title for the current page. This is the title of the current page 2031 * until WebViewClient.onReceivedTitle is called. 2032 * @return The title for the current page. 2033 */ 2034 public String getTitle() { 2035 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2036 return h != null ? h.getTitle() : null; 2037 } 2038 2039 /** 2040 * Get the favicon for the current page. This is the favicon of the current 2041 * page until WebViewClient.onReceivedIcon is called. 2042 * @return The favicon for the current page. 2043 */ 2044 public Bitmap getFavicon() { 2045 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2046 return h != null ? h.getFavicon() : null; 2047 } 2048 2049 /** 2050 * Get the touch icon url for the apple-touch-icon <link> element. 2051 * @hide 2052 */ 2053 public String getTouchIconUrl() { 2054 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2055 return h != null ? h.getTouchIconUrl() : null; 2056 } 2057 2058 /** 2059 * Get the progress for the current page. 2060 * @return The progress for the current page between 0 and 100. 2061 */ 2062 public int getProgress() { 2063 return mCallbackProxy.getProgress(); 2064 } 2065 2066 /** 2067 * @return the height of the HTML content. 2068 */ 2069 public int getContentHeight() { 2070 return mContentHeight; 2071 } 2072 2073 /** 2074 * Pause all layout, parsing, and javascript timers for all webviews. This 2075 * is a global requests, not restricted to just this webview. This can be 2076 * useful if the application has been paused. 2077 */ 2078 public void pauseTimers() { 2079 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2080 } 2081 2082 /** 2083 * Resume all layout, parsing, and javascript timers for all webviews. 2084 * This will resume dispatching all timers. 2085 */ 2086 public void resumeTimers() { 2087 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2088 } 2089 2090 /** 2091 * Call this to pause any extra processing associated with this view and 2092 * its associated DOM/plugins/javascript/etc. For example, if the view is 2093 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2094 * network traffic. When the view is again "active", call onResume(). 2095 * 2096 * Note that this differs from pauseTimers(), which affects all views/DOMs 2097 * @hide 2098 */ 2099 public void onPause() { 2100 if (!mIsPaused) { 2101 mIsPaused = true; 2102 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2103 } 2104 } 2105 2106 /** 2107 * Call this to balanace a previous call to onPause() 2108 * @hide 2109 */ 2110 public void onResume() { 2111 if (mIsPaused) { 2112 mIsPaused = false; 2113 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2114 } 2115 } 2116 2117 /** 2118 * Returns true if the view is paused, meaning onPause() was called. Calling 2119 * onResume() sets the paused state back to false. 2120 * @hide 2121 */ 2122 public boolean isPaused() { 2123 return mIsPaused; 2124 } 2125 2126 /** 2127 * Call this to inform the view that memory is low so that it can 2128 * free any available memory. 2129 * @hide 2130 */ 2131 public void freeMemory() { 2132 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2133 } 2134 2135 /** 2136 * Clear the resource cache. Note that the cache is per-application, so 2137 * this will clear the cache for all WebViews used. 2138 * 2139 * @param includeDiskFiles If false, only the RAM cache is cleared. 2140 */ 2141 public void clearCache(boolean includeDiskFiles) { 2142 // Note: this really needs to be a static method as it clears cache for all 2143 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2144 // we can't make this static. 2145 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2146 includeDiskFiles ? 1 : 0, 0); 2147 } 2148 2149 /** 2150 * Make sure that clearing the form data removes the adapter from the 2151 * currently focused textfield if there is one. 2152 */ 2153 public void clearFormData() { 2154 if (inEditingMode()) { 2155 AutoCompleteAdapter adapter = null; 2156 mWebTextView.setAdapterCustom(adapter); 2157 } 2158 } 2159 2160 /** 2161 * Tell the WebView to clear its internal back/forward list. 2162 */ 2163 public void clearHistory() { 2164 mCallbackProxy.getBackForwardList().setClearPending(); 2165 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2166 } 2167 2168 /** 2169 * Clear the SSL preferences table stored in response to proceeding with SSL 2170 * certificate errors. 2171 */ 2172 public void clearSslPreferences() { 2173 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2174 } 2175 2176 /** 2177 * Return the WebBackForwardList for this WebView. This contains the 2178 * back/forward list for use in querying each item in the history stack. 2179 * This is a copy of the private WebBackForwardList so it contains only a 2180 * snapshot of the current state. Multiple calls to this method may return 2181 * different objects. The object returned from this method will not be 2182 * updated to reflect any new state. 2183 */ 2184 public WebBackForwardList copyBackForwardList() { 2185 return mCallbackProxy.getBackForwardList().clone(); 2186 } 2187 2188 /* 2189 * Highlight and scroll to the next occurance of String in findAll. 2190 * Wraps the page infinitely, and scrolls. Must be called after 2191 * calling findAll. 2192 * 2193 * @param forward Direction to search. 2194 */ 2195 public void findNext(boolean forward) { 2196 nativeFindNext(forward); 2197 } 2198 2199 /* 2200 * Find all instances of find on the page and highlight them. 2201 * @param find String to find. 2202 * @return int The number of occurances of the String "find" 2203 * that were found. 2204 */ 2205 public int findAll(String find) { 2206 mFindIsUp = true; 2207 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2208 invalidate(); 2209 return result; 2210 } 2211 2212 // Used to know whether the find dialog is open. Affects whether 2213 // or not we draw the highlights for matches. 2214 private boolean mFindIsUp; 2215 2216 /** 2217 * Return the first substring consisting of the address of a physical 2218 * location. Currently, only addresses in the United States are detected, 2219 * and consist of: 2220 * - a house number 2221 * - a street name 2222 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2223 * - a city name 2224 * - a state or territory, either spelled out or two-letter abbr. 2225 * - an optional 5 digit or 9 digit zip code. 2226 * 2227 * All names must be correctly capitalized, and the zip code, if present, 2228 * must be valid for the state. The street type must be a standard USPS 2229 * spelling or abbreviation. The state or territory must also be spelled 2230 * or abbreviated using USPS standards. The house number may not exceed 2231 * five digits. 2232 * @param addr The string to search for addresses. 2233 * 2234 * @return the address, or if no address is found, return null. 2235 */ 2236 public static String findAddress(String addr) { 2237 return findAddress(addr, false); 2238 } 2239 2240 /** 2241 * @hide 2242 * Return the first substring consisting of the address of a physical 2243 * location. Currently, only addresses in the United States are detected, 2244 * and consist of: 2245 * - a house number 2246 * - a street name 2247 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2248 * - a city name 2249 * - a state or territory, either spelled out or two-letter abbr. 2250 * - an optional 5 digit or 9 digit zip code. 2251 * 2252 * Names are optionally capitalized, and the zip code, if present, 2253 * must be valid for the state. The street type must be a standard USPS 2254 * spelling or abbreviation. The state or territory must also be spelled 2255 * or abbreviated using USPS standards. The house number may not exceed 2256 * five digits. 2257 * @param addr The string to search for addresses. 2258 * @param caseInsensitive addr Set to true to make search ignore case. 2259 * 2260 * @return the address, or if no address is found, return null. 2261 */ 2262 public static String findAddress(String addr, boolean caseInsensitive) { 2263 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2264 } 2265 2266 /* 2267 * Clear the highlighting surrounding text matches created by findAll. 2268 */ 2269 public void clearMatches() { 2270 mFindIsUp = false; 2271 nativeSetFindIsDown(); 2272 // Now that the dialog has been removed, ensure that we scroll to a 2273 // location that is not beyond the end of the page. 2274 pinScrollTo(mScrollX, mScrollY, false, 0); 2275 invalidate(); 2276 } 2277 2278 /** 2279 * Query the document to see if it contains any image references. The 2280 * message object will be dispatched with arg1 being set to 1 if images 2281 * were found and 0 if the document does not reference any images. 2282 * @param response The message that will be dispatched with the result. 2283 */ 2284 public void documentHasImages(Message response) { 2285 if (response == null) { 2286 return; 2287 } 2288 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2289 } 2290 2291 @Override 2292 public void computeScroll() { 2293 if (mScroller.computeScrollOffset()) { 2294 int oldX = mScrollX; 2295 int oldY = mScrollY; 2296 mScrollX = mScroller.getCurrX(); 2297 mScrollY = mScroller.getCurrY(); 2298 postInvalidate(); // So we draw again 2299 if (oldX != mScrollX || oldY != mScrollY) { 2300 // as onScrollChanged() is not called, sendOurVisibleRect() 2301 // needs to be call explicitly 2302 sendOurVisibleRect(); 2303 } 2304 } else { 2305 super.computeScroll(); 2306 } 2307 } 2308 2309 private static int computeDuration(int dx, int dy) { 2310 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2311 int duration = distance * 1000 / STD_SPEED; 2312 return Math.min(duration, MAX_DURATION); 2313 } 2314 2315 // helper to pin the scrollBy parameters (already in view coordinates) 2316 // returns true if the scroll was changed 2317 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2318 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2319 } 2320 2321 // helper to pin the scrollTo parameters (already in view coordinates) 2322 // returns true if the scroll was changed 2323 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2324 x = pinLocX(x); 2325 y = pinLocY(y); 2326 int dx = x - mScrollX; 2327 int dy = y - mScrollY; 2328 2329 if ((dx | dy) == 0) { 2330 return false; 2331 } 2332 2333 if (true && animate) { 2334 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2335 2336 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2337 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2338 invalidate(); 2339 } else { 2340 mScroller.abortAnimation(); // just in case 2341 scrollTo(x, y); 2342 } 2343 return true; 2344 } 2345 2346 // Scale from content to view coordinates, and pin. 2347 // Also called by jni webview.cpp 2348 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2349 if (mDrawHistory) { 2350 // disallow WebView to change the scroll position as History Picture 2351 // is used in the view system. 2352 // TODO: as we switchOutDrawHistory when trackball or navigation 2353 // keys are hit, this should be safe. Right? 2354 return false; 2355 } 2356 cx = contentToView(cx); 2357 cy = contentToView(cy); 2358 if (mHeightCanMeasure) { 2359 // move our visible rect according to scroll request 2360 if (cy != 0) { 2361 Rect tempRect = new Rect(); 2362 calcOurVisibleRect(tempRect); 2363 tempRect.offset(cx, cy); 2364 requestRectangleOnScreen(tempRect); 2365 } 2366 // FIXME: We scroll horizontally no matter what because currently 2367 // ScrollView and ListView will not scroll horizontally. 2368 // FIXME: Why do we only scroll horizontally if there is no 2369 // vertical scroll? 2370// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2371 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2372 } else { 2373 return pinScrollBy(cx, cy, animate, 0); 2374 } 2375 } 2376 2377 // scale from content to view coordinates, and pin 2378 // return true if pin caused the final x/y different than the request cx/cy; 2379 // return false if the view scroll to the exact position as it is requested. 2380 private boolean setContentScrollTo(int cx, int cy) { 2381 if (mDrawHistory) { 2382 // disallow WebView to change the scroll position as History Picture 2383 // is used in the view system. 2384 // One known case where this is called is that WebCore tries to 2385 // restore the scroll position. As history Picture already uses the 2386 // saved scroll position, it is ok to skip this. 2387 return false; 2388 } 2389 int vx = contentToView(cx); 2390 int vy = contentToView(cy); 2391// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2392// vx + " " + vy + "]"); 2393 pinScrollTo(vx, vy, false, 0); 2394 if (mScrollX != vx || mScrollY != vy) { 2395 return true; 2396 } else { 2397 return false; 2398 } 2399 } 2400 2401 // scale from content to view coordinates, and pin 2402 private void spawnContentScrollTo(int cx, int cy) { 2403 if (mDrawHistory) { 2404 // disallow WebView to change the scroll position as History Picture 2405 // is used in the view system. 2406 return; 2407 } 2408 int vx = contentToView(cx); 2409 int vy = contentToView(cy); 2410 pinScrollTo(vx, vy, true, 0); 2411 } 2412 2413 /** 2414 * These are from webkit, and are in content coordinate system (unzoomed) 2415 */ 2416 private void contentSizeChanged(boolean updateLayout) { 2417 // suppress 0,0 since we usually see real dimensions soon after 2418 // this avoids drawing the prev content in a funny place. If we find a 2419 // way to consolidate these notifications, this check may become 2420 // obsolete 2421 if ((mContentWidth | mContentHeight) == 0) { 2422 return; 2423 } 2424 2425 if (mHeightCanMeasure) { 2426 if (getMeasuredHeight() != contentToView(mContentHeight) 2427 && updateLayout) { 2428 requestLayout(); 2429 } 2430 } else if (mWidthCanMeasure) { 2431 if (getMeasuredWidth() != contentToView(mContentWidth) 2432 && updateLayout) { 2433 requestLayout(); 2434 } 2435 } else { 2436 // If we don't request a layout, try to send our view size to the 2437 // native side to ensure that WebCore has the correct dimensions. 2438 sendViewSizeZoom(); 2439 } 2440 } 2441 2442 /** 2443 * Set the WebViewClient that will receive various notifications and 2444 * requests. This will replace the current handler. 2445 * @param client An implementation of WebViewClient. 2446 */ 2447 public void setWebViewClient(WebViewClient client) { 2448 mCallbackProxy.setWebViewClient(client); 2449 } 2450 2451 /** 2452 * Register the interface to be used when content can not be handled by 2453 * the rendering engine, and should be downloaded instead. This will replace 2454 * the current handler. 2455 * @param listener An implementation of DownloadListener. 2456 */ 2457 public void setDownloadListener(DownloadListener listener) { 2458 mCallbackProxy.setDownloadListener(listener); 2459 } 2460 2461 /** 2462 * Set the chrome handler. This is an implementation of WebChromeClient for 2463 * use in handling Javascript dialogs, favicons, titles, and the progress. 2464 * This will replace the current handler. 2465 * @param client An implementation of WebChromeClient. 2466 */ 2467 public void setWebChromeClient(WebChromeClient client) { 2468 mCallbackProxy.setWebChromeClient(client); 2469 } 2470 2471 /** 2472 * Gets the chrome handler. 2473 * @return the current WebChromeClient instance. 2474 * 2475 * @hide API council approval. 2476 */ 2477 public WebChromeClient getWebChromeClient() { 2478 return mCallbackProxy.getWebChromeClient(); 2479 } 2480 2481 /** 2482 * Set the Picture listener. This is an interface used to receive 2483 * notifications of a new Picture. 2484 * @param listener An implementation of WebView.PictureListener. 2485 */ 2486 public void setPictureListener(PictureListener listener) { 2487 mPictureListener = listener; 2488 } 2489 2490 /** 2491 * {@hide} 2492 */ 2493 /* FIXME: Debug only! Remove for SDK! */ 2494 public void externalRepresentation(Message callback) { 2495 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2496 } 2497 2498 /** 2499 * {@hide} 2500 */ 2501 /* FIXME: Debug only! Remove for SDK! */ 2502 public void documentAsText(Message callback) { 2503 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2504 } 2505 2506 /** 2507 * Use this function to bind an object to Javascript so that the 2508 * methods can be accessed from Javascript. 2509 * <p><strong>IMPORTANT:</strong> 2510 * <ul> 2511 * <li> Using addJavascriptInterface() allows JavaScript to control your 2512 * application. This can be a very useful feature or a dangerous security 2513 * issue. When the HTML in the WebView is untrustworthy (for example, part 2514 * or all of the HTML is provided by some person or process), then an 2515 * attacker could inject HTML that will execute your code and possibly any 2516 * code of the attacker's choosing.<br> 2517 * Do not use addJavascriptInterface() unless all of the HTML in this 2518 * WebView was written by you.</li> 2519 * <li> The Java object that is bound runs in another thread and not in 2520 * the thread that it was constructed in.</li> 2521 * </ul></p> 2522 * @param obj The class instance to bind to Javascript 2523 * @param interfaceName The name to used to expose the class in Javascript 2524 */ 2525 public void addJavascriptInterface(Object obj, String interfaceName) { 2526 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2527 arg.mObject = obj; 2528 arg.mInterfaceName = interfaceName; 2529 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2530 } 2531 2532 /** 2533 * Return the WebSettings object used to control the settings for this 2534 * WebView. 2535 * @return A WebSettings object that can be used to control this WebView's 2536 * settings. 2537 */ 2538 public WebSettings getSettings() { 2539 return mWebViewCore.getSettings(); 2540 } 2541 2542 /** 2543 * Return the list of currently loaded plugins. 2544 * @return The list of currently loaded plugins. 2545 * 2546 * @deprecated This was used for Gears, which has been deprecated. 2547 */ 2548 @Deprecated 2549 public static synchronized PluginList getPluginList() { 2550 return null; 2551 } 2552 2553 /** 2554 * @deprecated This was used for Gears, which has been deprecated. 2555 */ 2556 @Deprecated 2557 public void refreshPlugins(boolean reloadOpenPages) { } 2558 2559 //------------------------------------------------------------------------- 2560 // Override View methods 2561 //------------------------------------------------------------------------- 2562 2563 @Override 2564 protected void finalize() throws Throwable { 2565 try { 2566 destroy(); 2567 } finally { 2568 super.finalize(); 2569 } 2570 } 2571 2572 @Override 2573 protected void onDraw(Canvas canvas) { 2574 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2575 if (mNativeClass == 0) { 2576 return; 2577 } 2578 if (mWebViewCore.mEndScaleZoom) { 2579 mWebViewCore.mEndScaleZoom = false; 2580 if (mTouchMode >= FIRST_SCROLL_ZOOM 2581 && mTouchMode <= LAST_SCROLL_ZOOM) { 2582 setHorizontalScrollBarEnabled(true); 2583 setVerticalScrollBarEnabled(true); 2584 mTouchMode = TOUCH_DONE_MODE; 2585 } 2586 } 2587 int sc = canvas.save(); 2588 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 2589 scrollZoomDraw(canvas); 2590 } else { 2591 // Update the buttons in the picture, so when we draw the picture 2592 // to the screen, they are in the correct state. 2593 // Tell the native side if user is a) touching the screen, 2594 // b) pressing the trackball down, or c) pressing the enter key 2595 // If the cursor is on a button, we need to draw it in the pressed 2596 // state. 2597 // If mNativeClass is 0, we should not reach here, so we do not 2598 // need to check it again. 2599 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2600 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2601 || mTrackballDown || mGotCenterDown, false); 2602 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2603 } 2604 canvas.restoreToCount(sc); 2605 2606 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2607 invalidate(); 2608 } 2609 } 2610 2611 @Override 2612 public void setLayoutParams(ViewGroup.LayoutParams params) { 2613 if (params.height == LayoutParams.WRAP_CONTENT) { 2614 mWrapContent = true; 2615 } 2616 super.setLayoutParams(params); 2617 } 2618 2619 @Override 2620 public boolean performLongClick() { 2621 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 2622 // Send the click so that the textfield is in focus 2623 // FIXME: When we start respecting changes to the native textfield's 2624 // selection, need to make sure that this does not change it. 2625 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 2626 nativeCursorNodePointer()); 2627 rebuildWebTextView(); 2628 } 2629 if (inEditingMode()) { 2630 return mWebTextView.performLongClick(); 2631 } else { 2632 return super.performLongClick(); 2633 } 2634 } 2635 2636 private void drawCoreAndCursorRing(Canvas canvas, int color, 2637 boolean drawCursorRing) { 2638 if (mDrawHistory) { 2639 canvas.scale(mActualScale, mActualScale); 2640 canvas.drawPicture(mHistoryPicture); 2641 return; 2642 } 2643 2644 boolean animateZoom = mZoomScale != 0; 2645 boolean animateScroll = !mScroller.isFinished() 2646 || mVelocityTracker != null; 2647 if (animateZoom) { 2648 float zoomScale; 2649 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 2650 if (interval < ZOOM_ANIMATION_LENGTH) { 2651 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 2652 zoomScale = 1.0f / (mInvInitialZoomScale 2653 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 2654 invalidate(); 2655 } else { 2656 zoomScale = mZoomScale; 2657 // set mZoomScale to be 0 as we have done animation 2658 mZoomScale = 0; 2659 } 2660 float scale = zoomScale * mInvInitialZoomScale; 2661 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 2662 - mZoomCenterX); 2663 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 2664 * zoomScale)) + mScrollX; 2665 int ty = Math.round(scale * (mInitialScrollY + mZoomCenterY) 2666 - mZoomCenterY); 2667 ty = -pinLoc(ty, getViewHeight(), Math.round(mContentHeight 2668 * zoomScale)) + mScrollY; 2669 canvas.translate(tx, ty); 2670 canvas.scale(zoomScale, zoomScale); 2671 } else { 2672 canvas.scale(mActualScale, mActualScale); 2673 } 2674 2675 mWebViewCore.drawContentPicture(canvas, color, animateZoom, 2676 animateScroll); 2677 2678 if (mNativeClass == 0) return; 2679 if (mShiftIsPressed) { 2680 if (mTouchSelection) { 2681 nativeDrawSelectionRegion(canvas); 2682 } else { 2683 nativeDrawSelection(canvas, mSelectX, mSelectY, 2684 mExtendSelection); 2685 } 2686 } else if (drawCursorRing) { 2687 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 2688 mTouchMode = TOUCH_SHORTPRESS_MODE; 2689 HitTestResult hitTest = getHitTestResult(); 2690 if (hitTest != null && 2691 hitTest.mType != HitTestResult.UNKNOWN_TYPE) { 2692 mPrivateHandler.sendMessageDelayed(mPrivateHandler 2693 .obtainMessage(SWITCH_TO_LONGPRESS), 2694 LONG_PRESS_TIMEOUT); 2695 } 2696 } 2697 nativeDrawCursorRing(canvas); 2698 } 2699 // When the FindDialog is up, only draw the matches if we are not in 2700 // the process of scrolling them into view. 2701 if (mFindIsUp && !animateScroll) { 2702 nativeDrawMatches(canvas); 2703 } 2704 } 2705 2706 private float scrollZoomGridScale(float invScale) { 2707 float griddedInvScale = (int) (invScale * SCROLL_ZOOM_GRID) 2708 / (float) SCROLL_ZOOM_GRID; 2709 return 1.0f / griddedInvScale; 2710 } 2711 2712 private float scrollZoomX(float scale) { 2713 int width = getViewWidth(); 2714 float maxScrollZoomX = mContentWidth * scale - width; 2715 int maxX = mContentWidth - width; 2716 return -(maxScrollZoomX > 0 ? mZoomScrollX * maxScrollZoomX / maxX 2717 : maxScrollZoomX / 2); 2718 } 2719 2720 private float scrollZoomY(float scale) { 2721 int height = getViewHeight(); 2722 float maxScrollZoomY = mContentHeight * scale - height; 2723 int maxY = mContentHeight - height; 2724 return -(maxScrollZoomY > 0 ? mZoomScrollY * maxScrollZoomY / maxY 2725 : maxScrollZoomY / 2); 2726 } 2727 2728 private void drawMagnifyFrame(Canvas canvas, Rect frame, Paint paint) { 2729 final float ADORNMENT_LEN = 16.0f; 2730 float width = frame.width(); 2731 float height = frame.height(); 2732 Path path = new Path(); 2733 path.moveTo(-ADORNMENT_LEN, -ADORNMENT_LEN); 2734 path.lineTo(0, 0); 2735 path.lineTo(width, 0); 2736 path.lineTo(width + ADORNMENT_LEN, -ADORNMENT_LEN); 2737 path.moveTo(-ADORNMENT_LEN, height + ADORNMENT_LEN); 2738 path.lineTo(0, height); 2739 path.lineTo(width, height); 2740 path.lineTo(width + ADORNMENT_LEN, height + ADORNMENT_LEN); 2741 path.moveTo(0, 0); 2742 path.lineTo(0, height); 2743 path.moveTo(width, 0); 2744 path.lineTo(width, height); 2745 path.offset(frame.left, frame.top); 2746 canvas.drawPath(path, paint); 2747 } 2748 2749 // Returns frame surrounding magified portion of screen while 2750 // scroll-zoom is enabled. The frame is also used to center the 2751 // zoom-in zoom-out points at the start and end of the animation. 2752 private Rect scrollZoomFrame(int width, int height, float halfScale) { 2753 Rect scrollFrame = new Rect(); 2754 scrollFrame.set(mZoomScrollX, mZoomScrollY, 2755 mZoomScrollX + width, mZoomScrollY + height); 2756 if (mContentWidth * mZoomScrollLimit < width) { 2757 float scale = zoomFrameScaleX(width, halfScale, 1.0f); 2758 float offsetX = (width * scale - width) * 0.5f; 2759 scrollFrame.left -= offsetX; 2760 scrollFrame.right += offsetX; 2761 } 2762 if (mContentHeight * mZoomScrollLimit < height) { 2763 float scale = zoomFrameScaleY(height, halfScale, 1.0f); 2764 float offsetY = (height * scale - height) * 0.5f; 2765 scrollFrame.top -= offsetY; 2766 scrollFrame.bottom += offsetY; 2767 } 2768 return scrollFrame; 2769 } 2770 2771 private float zoomFrameScaleX(int width, float halfScale, float noScale) { 2772 // mContentWidth > width > mContentWidth * mZoomScrollLimit 2773 if (mContentWidth <= width) { 2774 return halfScale; 2775 } 2776 float part = (width - mContentWidth * mZoomScrollLimit) 2777 / (width * (1 - mZoomScrollLimit)); 2778 return halfScale * part + noScale * (1.0f - part); 2779 } 2780 2781 private float zoomFrameScaleY(int height, float halfScale, float noScale) { 2782 if (mContentHeight <= height) { 2783 return halfScale; 2784 } 2785 float part = (height - mContentHeight * mZoomScrollLimit) 2786 / (height * (1 - mZoomScrollLimit)); 2787 return halfScale * part + noScale * (1.0f - part); 2788 } 2789 2790 private float scrollZoomMagScale(float invScale) { 2791 return (invScale * 2 + mInvActualScale) / 3; 2792 } 2793 2794 private void scrollZoomDraw(Canvas canvas) { 2795 float invScale = mZoomScrollInvLimit; 2796 int elapsed = 0; 2797 if (mTouchMode != SCROLL_ZOOM_OUT) { 2798 elapsed = (int) Math.min(System.currentTimeMillis() 2799 - mZoomScrollStart, SCROLL_ZOOM_DURATION); 2800 float transitionScale = (mZoomScrollInvLimit - mInvActualScale) 2801 * elapsed / SCROLL_ZOOM_DURATION; 2802 if (mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 2803 invScale = mInvActualScale + transitionScale; 2804 } else { /* if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) */ 2805 invScale = mZoomScrollInvLimit - transitionScale; 2806 } 2807 } 2808 float scale = scrollZoomGridScale(invScale); 2809 invScale = 1.0f / scale; 2810 int width = getViewWidth(); 2811 int height = getViewHeight(); 2812 float halfScale = scrollZoomMagScale(invScale); 2813 Rect scrollFrame = scrollZoomFrame(width, height, halfScale); 2814 if (elapsed == SCROLL_ZOOM_DURATION) { 2815 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 2816 setHorizontalScrollBarEnabled(true); 2817 setVerticalScrollBarEnabled(true); 2818 rebuildWebTextView(); 2819 scrollTo((int) (scrollFrame.centerX() * mActualScale) 2820 - (width >> 1), (int) (scrollFrame.centerY() 2821 * mActualScale) - (height >> 1)); 2822 mTouchMode = TOUCH_DONE_MODE; 2823 // Show all the child views once we are done. 2824 mViewManager.showAll(); 2825 } else { 2826 mTouchMode = SCROLL_ZOOM_OUT; 2827 } 2828 } 2829 float newX = scrollZoomX(scale); 2830 float newY = scrollZoomY(scale); 2831 if (DebugFlags.WEB_VIEW) { 2832 Log.v(LOGTAG, "scrollZoomDraw scale=" + scale + " + (" + newX 2833 + ", " + newY + ") mZoomScroll=(" + mZoomScrollX + ", " 2834 + mZoomScrollY + ")" + " invScale=" + invScale + " scale=" 2835 + scale); 2836 } 2837 canvas.translate(newX, newY); 2838 canvas.scale(scale, scale); 2839 boolean animating = mTouchMode != SCROLL_ZOOM_OUT; 2840 if (mDrawHistory) { 2841 int sc = canvas.save(Canvas.CLIP_SAVE_FLAG); 2842 Rect clip = new Rect(0, 0, mHistoryPicture.getWidth(), 2843 mHistoryPicture.getHeight()); 2844 canvas.clipRect(clip, Region.Op.DIFFERENCE); 2845 canvas.drawColor(mBackgroundColor); 2846 canvas.restoreToCount(sc); 2847 canvas.drawPicture(mHistoryPicture); 2848 } else { 2849 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2850 animating, true); 2851 } 2852 if (mTouchMode == TOUCH_DONE_MODE) { 2853 return; 2854 } 2855 Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); 2856 paint.setStyle(Paint.Style.STROKE); 2857 paint.setStrokeWidth(30.0f); 2858 paint.setARGB(0x50, 0, 0, 0); 2859 int maxX = mContentWidth - width; 2860 int maxY = mContentHeight - height; 2861 if (true) { // experiment: draw hint to place finger off magnify area 2862 drawMagnifyFrame(canvas, scrollFrame, paint); 2863 } else { 2864 canvas.drawRect(scrollFrame, paint); 2865 } 2866 int sc = canvas.save(); 2867 canvas.clipRect(scrollFrame); 2868 float halfX = (float) mZoomScrollX / maxX; 2869 if (mContentWidth * mZoomScrollLimit < width) { 2870 halfX = zoomFrameScaleX(width, 0.5f, halfX); 2871 } 2872 float halfY = (float) mZoomScrollY / maxY; 2873 if (mContentHeight * mZoomScrollLimit < height) { 2874 halfY = zoomFrameScaleY(height, 0.5f, halfY); 2875 } 2876 canvas.scale(halfScale, halfScale, mZoomScrollX + width * halfX 2877 , mZoomScrollY + height * halfY); 2878 if (DebugFlags.WEB_VIEW) { 2879 Log.v(LOGTAG, "scrollZoomDraw halfScale=" + halfScale + " w/h=(" 2880 + width + ", " + height + ") half=(" + halfX + ", " 2881 + halfY + ")"); 2882 } 2883 if (mDrawHistory) { 2884 canvas.drawPicture(mHistoryPicture); 2885 } else { 2886 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2887 animating, false); 2888 } 2889 canvas.restoreToCount(sc); 2890 if (mTouchMode != SCROLL_ZOOM_OUT) { 2891 invalidate(); 2892 } 2893 } 2894 2895 private void zoomScrollTap(float x, float y) { 2896 float scale = scrollZoomGridScale(mZoomScrollInvLimit); 2897 float left = scrollZoomX(scale); 2898 float top = scrollZoomY(scale); 2899 int width = getViewWidth(); 2900 int height = getViewHeight(); 2901 x -= width * scale / 2; 2902 y -= height * scale / 2; 2903 mZoomScrollX = Math.min(mContentWidth - width 2904 , Math.max(0, (int) ((x - left) / scale))); 2905 mZoomScrollY = Math.min(mContentHeight - height 2906 , Math.max(0, (int) ((y - top) / scale))); 2907 if (DebugFlags.WEB_VIEW) { 2908 Log.v(LOGTAG, "zoomScrollTap scale=" + scale + " + (" + left 2909 + ", " + top + ") mZoomScroll=(" + mZoomScrollX + ", " 2910 + mZoomScrollY + ")" + " x=" + x + " y=" + y); 2911 } 2912 } 2913 2914 /** 2915 * @hide 2916 */ 2917 public boolean canZoomScrollOut() { 2918 if (mContentWidth == 0 || mContentHeight == 0) { 2919 return false; 2920 } 2921 int width = getViewWidth(); 2922 int height = getViewHeight(); 2923 float x = (float) width / (float) mContentWidth; 2924 float y = (float) height / (float) mContentHeight; 2925 mZoomScrollLimit = Math.max(DEFAULT_MIN_ZOOM_SCALE, Math.min(x, y)); 2926 mZoomScrollInvLimit = 1.0f / mZoomScrollLimit; 2927 if (DebugFlags.WEB_VIEW) { 2928 Log.v(LOGTAG, "canZoomScrollOut" 2929 + " mInvActualScale=" + mInvActualScale 2930 + " mZoomScrollLimit=" + mZoomScrollLimit 2931 + " mZoomScrollInvLimit=" + mZoomScrollInvLimit 2932 + " mContentWidth=" + mContentWidth 2933 + " mContentHeight=" + mContentHeight 2934 ); 2935 } 2936 // don't zoom out unless magnify area is at least half as wide 2937 // or tall as content 2938 float limit = mZoomScrollLimit * 2; 2939 return mContentWidth >= width * limit 2940 || mContentHeight >= height * limit; 2941 } 2942 2943 private void startZoomScrollOut() { 2944 setHorizontalScrollBarEnabled(false); 2945 setVerticalScrollBarEnabled(false); 2946 if (getSettings().getBuiltInZoomControls()) { 2947 if (mZoomButtonsController.isVisible()) { 2948 mZoomButtonsController.setVisible(false); 2949 } 2950 } else { 2951 if (mZoomControlRunnable != null) { 2952 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 2953 } 2954 if (mZoomControls != null) { 2955 mZoomControls.hide(); 2956 } 2957 } 2958 int width = getViewWidth(); 2959 int height = getViewHeight(); 2960 int halfW = width >> 1; 2961 mLastTouchX = halfW; 2962 int halfH = height >> 1; 2963 mLastTouchY = halfH; 2964 mScroller.abortAnimation(); 2965 mZoomScrollStart = System.currentTimeMillis(); 2966 Rect zoomFrame = scrollZoomFrame(width, height 2967 , scrollZoomMagScale(mZoomScrollInvLimit)); 2968 mZoomScrollX = Math.max(0, (int) ((mScrollX + halfW) * mInvActualScale) 2969 - (zoomFrame.width() >> 1)); 2970 mZoomScrollY = Math.max(0, (int) ((mScrollY + halfH) * mInvActualScale) 2971 - (zoomFrame.height() >> 1)); 2972 scrollTo(0, 0); // triggers inval, starts animation 2973 clearTextEntry(); 2974 if (DebugFlags.WEB_VIEW) { 2975 Log.v(LOGTAG, "startZoomScrollOut mZoomScroll=(" 2976 + mZoomScrollX + ", " + mZoomScrollY +")"); 2977 } 2978 } 2979 2980 /** 2981 * @hide 2982 */ 2983 public void zoomScrollOut() { 2984 if (canZoomScrollOut() == false) { 2985 mTouchMode = TOUCH_DONE_MODE; 2986 return; 2987 } 2988 // Hide the child views while in this mode. 2989 mViewManager.hideAll(); 2990 startZoomScrollOut(); 2991 mTouchMode = SCROLL_ZOOM_ANIMATION_OUT; 2992 invalidate(); 2993 } 2994 2995 private void moveZoomScrollWindow(float x, float y) { 2996 if (Math.abs(x - mLastZoomScrollRawX) < 1.5f 2997 && Math.abs(y - mLastZoomScrollRawY) < 1.5f) { 2998 return; 2999 } 3000 mLastZoomScrollRawX = x; 3001 mLastZoomScrollRawY = y; 3002 int oldX = mZoomScrollX; 3003 int oldY = mZoomScrollY; 3004 int width = getViewWidth(); 3005 int height = getViewHeight(); 3006 int maxZoomX = mContentWidth - width; 3007 if (maxZoomX > 0) { 3008 int maxScreenX = width - (int) Math.ceil(width 3009 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 3010 if (DebugFlags.WEB_VIEW) { 3011 Log.v(LOGTAG, "moveZoomScrollWindow-X" 3012 + " maxScreenX=" + maxScreenX + " width=" + width 3013 + " mZoomScrollLimit=" + mZoomScrollLimit + " x=" + x); 3014 } 3015 x += maxScreenX * mLastScrollX / maxZoomX - mLastTouchX; 3016 x *= Math.max(maxZoomX / maxScreenX, mZoomScrollInvLimit); 3017 mZoomScrollX = Math.max(0, Math.min(maxZoomX, (int) x)); 3018 } 3019 int maxZoomY = mContentHeight - height; 3020 if (maxZoomY > 0) { 3021 int maxScreenY = height - (int) Math.ceil(height 3022 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 3023 if (DebugFlags.WEB_VIEW) { 3024 Log.v(LOGTAG, "moveZoomScrollWindow-Y" 3025 + " maxScreenY=" + maxScreenY + " height=" + height 3026 + " mZoomScrollLimit=" + mZoomScrollLimit + " y=" + y); 3027 } 3028 y += maxScreenY * mLastScrollY / maxZoomY - mLastTouchY; 3029 y *= Math.max(maxZoomY / maxScreenY, mZoomScrollInvLimit); 3030 mZoomScrollY = Math.max(0, Math.min(maxZoomY, (int) y)); 3031 } 3032 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 3033 invalidate(); 3034 } 3035 if (DebugFlags.WEB_VIEW) { 3036 Log.v(LOGTAG, "moveZoomScrollWindow" 3037 + " scrollTo=(" + mZoomScrollX + ", " + mZoomScrollY + ")" 3038 + " mLastTouch=(" + mLastTouchX + ", " + mLastTouchY + ")" 3039 + " maxZoom=(" + maxZoomX + ", " + maxZoomY + ")" 3040 + " last=("+mLastScrollX+", "+mLastScrollY+")" 3041 + " x=" + x + " y=" + y); 3042 } 3043 } 3044 3045 private void setZoomScrollIn() { 3046 mZoomScrollStart = System.currentTimeMillis(); 3047 } 3048 3049 private float mZoomScrollLimit; 3050 private float mZoomScrollInvLimit; 3051 private int mLastScrollX; 3052 private int mLastScrollY; 3053 private long mZoomScrollStart; 3054 private int mZoomScrollX; 3055 private int mZoomScrollY; 3056 private float mLastZoomScrollRawX = -1000.0f; 3057 private float mLastZoomScrollRawY = -1000.0f; 3058 // The zoomed scale varies from 1.0 to DEFAULT_MIN_ZOOM_SCALE == 0.25. 3059 // The zoom animation duration SCROLL_ZOOM_DURATION == 0.5. 3060 // Two pressures compete for gridding; a high frame rate (e.g. 20 fps) 3061 // and minimizing font cache allocations (fewer frames is better). 3062 // A SCROLL_ZOOM_GRID of 6 permits about 20 zoom levels over 0.5 seconds: 3063 // the inverse of: 1.0, 1.16, 1.33, 1.5, 1.67, 1.84, 2.0, etc. to 4.0 3064 private static final int SCROLL_ZOOM_GRID = 6; 3065 private static final int SCROLL_ZOOM_DURATION = 500; 3066 // Make it easier to get to the bottom of a document by reserving a 32 3067 // pixel buffer, for when the starting drag is a bit below the bottom of 3068 // the magnify frame. 3069 private static final int SCROLL_ZOOM_FINGER_BUFFER = 32; 3070 3071 // draw history 3072 private boolean mDrawHistory = false; 3073 private Picture mHistoryPicture = null; 3074 private int mHistoryWidth = 0; 3075 private int mHistoryHeight = 0; 3076 3077 // Only check the flag, can be called from WebCore thread 3078 boolean drawHistory() { 3079 return mDrawHistory; 3080 } 3081 3082 // Should only be called in UI thread 3083 void switchOutDrawHistory() { 3084 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3085 if (mDrawHistory && mWebViewCore.pictureReady()) { 3086 mDrawHistory = false; 3087 invalidate(); 3088 int oldScrollX = mScrollX; 3089 int oldScrollY = mScrollY; 3090 mScrollX = pinLocX(mScrollX); 3091 mScrollY = pinLocY(mScrollY); 3092 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3093 mUserScroll = false; 3094 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3095 oldScrollY); 3096 } 3097 sendOurVisibleRect(); 3098 } 3099 } 3100 3101 WebViewCore.CursorData cursorData() { 3102 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3103 result.mMoveGeneration = nativeMoveGeneration(); 3104 result.mFrame = nativeCursorFramePointer(); 3105 Point position = nativeCursorPosition(); 3106 result.mX = position.x; 3107 result.mY = position.y; 3108 return result; 3109 } 3110 3111 /** 3112 * Delete text from start to end in the focused textfield. If there is no 3113 * focus, or if start == end, silently fail. If start and end are out of 3114 * order, swap them. 3115 * @param start Beginning of selection to delete. 3116 * @param end End of selection to delete. 3117 */ 3118 /* package */ void deleteSelection(int start, int end) { 3119 mTextGeneration++; 3120 WebViewCore.TextSelectionData data 3121 = new WebViewCore.TextSelectionData(start, end); 3122 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3123 data); 3124 } 3125 3126 /** 3127 * Set the selection to (start, end) in the focused textfield. If start and 3128 * end are out of order, swap them. 3129 * @param start Beginning of selection. 3130 * @param end End of selection. 3131 */ 3132 /* package */ void setSelection(int start, int end) { 3133 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3134 } 3135 3136 // Called by JNI when a touch event puts a textfield into focus. 3137 private void displaySoftKeyboard(boolean isTextView) { 3138 InputMethodManager imm = (InputMethodManager) 3139 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3140 3141 if (isTextView) { 3142 imm.showSoftInput(mWebTextView, 0); 3143 // Now we need to fake a touch event to place the cursor where the 3144 // user touched. 3145 AbsoluteLayout.LayoutParams lp = (AbsoluteLayout.LayoutParams) 3146 mWebTextView.getLayoutParams(); 3147 if (lp != null) { 3148 // Take the last touch and adjust for the location of the 3149 // WebTextView. 3150 float x = mLastTouchX + (float) (mScrollX - lp.x); 3151 float y = mLastTouchY + (float) (mScrollY - lp.y); 3152 mWebTextView.fakeTouchEvent(x, y); 3153 } 3154 if (mInZoomOverview) { 3155 // if in zoom overview mode, call doDoubleTap() to bring it back 3156 // to normal mode so that user can enter text. 3157 doDoubleTap(); 3158 } 3159 } 3160 else { // used by plugins 3161 imm.showSoftInput(this, 0); 3162 } 3163 } 3164 3165 // Called by WebKit to instruct the UI to hide the keyboard 3166 private void hideSoftKeyboard() { 3167 InputMethodManager imm = (InputMethodManager) 3168 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3169 3170 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3171 } 3172 3173 /* 3174 * This method checks the current focus and cursor and potentially rebuilds 3175 * mWebTextView to have the appropriate properties, such as password, 3176 * multiline, and what text it contains. It also removes it if necessary. 3177 */ 3178 /* package */ void rebuildWebTextView() { 3179 // If the WebView does not have focus, do nothing until it gains focus. 3180 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus()) 3181 || (mTouchMode >= FIRST_SCROLL_ZOOM 3182 && mTouchMode <= LAST_SCROLL_ZOOM)) { 3183 return; 3184 } 3185 boolean alreadyThere = inEditingMode(); 3186 // inEditingMode can only return true if mWebTextView is non-null, 3187 // so we can safely call remove() if (alreadyThere) 3188 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3189 if (alreadyThere) { 3190 mWebTextView.remove(); 3191 } 3192 return; 3193 } 3194 // At this point, we know we have found an input field, so go ahead 3195 // and create the WebTextView if necessary. 3196 if (mWebTextView == null) { 3197 mWebTextView = new WebTextView(mContext, WebView.this); 3198 // Initialize our generation number. 3199 mTextGeneration = 0; 3200 } 3201 mWebTextView.setTextSize(contentToView(nativeFocusCandidateTextSize())); 3202 Rect visibleRect = new Rect(); 3203 calcOurContentVisibleRect(visibleRect); 3204 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3205 // should be in content coordinates. 3206 Rect bounds = nativeFocusCandidateNodeBounds(); 3207 if (!Rect.intersects(bounds, visibleRect)) { 3208 mWebTextView.bringIntoView(); 3209 } 3210 String text = nativeFocusCandidateText(); 3211 int nodePointer = nativeFocusCandidatePointer(); 3212 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3213 // It is possible that we have the same textfield, but it has moved, 3214 // i.e. In the case of opening/closing the screen. 3215 // In that case, we need to set the dimensions, but not the other 3216 // aspects. 3217 // We also need to restore the selection, which gets wrecked by 3218 // calling setTextEntryRect. 3219 Spannable spannable = (Spannable) mWebTextView.getText(); 3220 int start = Selection.getSelectionStart(spannable); 3221 int end = Selection.getSelectionEnd(spannable); 3222 // If the text has been changed by webkit, update it. However, if 3223 // there has been more UI text input, ignore it. We will receive 3224 // another update when that text is recognized. 3225 if (text != null && !text.equals(spannable.toString()) 3226 && nativeTextGeneration() == mTextGeneration) { 3227 mWebTextView.setTextAndKeepSelection(text); 3228 } else { 3229 Selection.setSelection(spannable, start, end); 3230 } 3231 } else { 3232 Rect vBox = contentToView(bounds); 3233 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3234 vBox.height()); 3235 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3236 Gravity.RIGHT : Gravity.NO_GRAVITY); 3237 // this needs to be called before update adapter thread starts to 3238 // ensure the mWebTextView has the same node pointer 3239 mWebTextView.setNodePointer(nodePointer); 3240 int maxLength = -1; 3241 boolean isTextField = nativeFocusCandidateIsTextField(); 3242 if (isTextField) { 3243 maxLength = nativeFocusCandidateMaxLength(); 3244 String name = nativeFocusCandidateName(); 3245 if (mWebViewCore.getSettings().getSaveFormData() 3246 && name != null) { 3247 Message update = mPrivateHandler.obtainMessage( 3248 REQUEST_FORM_DATA, nodePointer); 3249 RequestFormData updater = new RequestFormData(name, 3250 getUrl(), update); 3251 Thread t = new Thread(updater); 3252 t.start(); 3253 } 3254 } 3255 mWebTextView.setMaxLength(maxLength); 3256 AutoCompleteAdapter adapter = null; 3257 mWebTextView.setAdapterCustom(adapter); 3258 mWebTextView.setSingleLine(isTextField); 3259 mWebTextView.setInPassword(nativeFocusCandidateIsPassword()); 3260 if (null == text) { 3261 mWebTextView.setText("", 0, 0); 3262 if (DebugFlags.WEB_VIEW) { 3263 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3264 } 3265 } else { 3266 // Change to true to enable the old style behavior, where 3267 // entering a textfield/textarea always set the selection to the 3268 // whole field. This was desirable for the case where the user 3269 // intends to scroll past the field using the trackball. 3270 // However, it causes a problem when replying to emails - the 3271 // user expects the cursor to be at the beginning of the 3272 // textarea. Testing out a new behavior, where textfields set 3273 // selection at the end, and textareas at the beginning. 3274 if (false) { 3275 mWebTextView.setText(text, 0, text.length()); 3276 } else if (isTextField) { 3277 int length = text.length(); 3278 mWebTextView.setText(text, length, length); 3279 if (DebugFlags.WEB_VIEW) { 3280 Log.v(LOGTAG, "rebuildWebTextView length=" + length); 3281 } 3282 } else { 3283 mWebTextView.setText(text, 0, 0); 3284 if (DebugFlags.WEB_VIEW) { 3285 Log.v(LOGTAG, "rebuildWebTextView !isTextField"); 3286 } 3287 } 3288 } 3289 mWebTextView.requestFocus(); 3290 } 3291 } 3292 3293 /* 3294 * This class requests an Adapter for the WebTextView which shows past 3295 * entries stored in the database. It is a Runnable so that it can be done 3296 * in its own thread, without slowing down the UI. 3297 */ 3298 private class RequestFormData implements Runnable { 3299 private String mName; 3300 private String mUrl; 3301 private Message mUpdateMessage; 3302 3303 public RequestFormData(String name, String url, Message msg) { 3304 mName = name; 3305 mUrl = url; 3306 mUpdateMessage = msg; 3307 } 3308 3309 public void run() { 3310 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3311 if (pastEntries.size() > 0) { 3312 AutoCompleteAdapter adapter = new 3313 AutoCompleteAdapter(mContext, pastEntries); 3314 mUpdateMessage.obj = adapter; 3315 mUpdateMessage.sendToTarget(); 3316 } 3317 } 3318 } 3319 3320 // This is used to determine long press with the center key. Does not 3321 // affect long press with the trackball/touch. 3322 private boolean mGotCenterDown = false; 3323 3324 @Override 3325 public boolean onKeyDown(int keyCode, KeyEvent event) { 3326 if (DebugFlags.WEB_VIEW) { 3327 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3328 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3329 } 3330 3331 if (mNativeClass == 0) { 3332 return false; 3333 } 3334 3335 // do this hack up front, so it always works, regardless of touch-mode 3336 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3337 mAutoRedraw = !mAutoRedraw; 3338 if (mAutoRedraw) { 3339 invalidate(); 3340 } 3341 return true; 3342 } 3343 3344 // Bubble up the key event if 3345 // 1. it is a system key; or 3346 // 2. the host application wants to handle it; or 3347 // 3. webview is in scroll-zoom state; 3348 if (event.isSystem() 3349 || mCallbackProxy.uiOverrideKeyEvent(event) 3350 || (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM)) { 3351 return false; 3352 } 3353 3354 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3355 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3356 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3357 mExtendSelection = false; 3358 mShiftIsPressed = true; 3359 if (nativeHasCursorNode()) { 3360 Rect rect = nativeCursorNodeBounds(); 3361 mSelectX = contentToView(rect.left); 3362 mSelectY = contentToView(rect.top); 3363 } else { 3364 mSelectX = mScrollX + (int) mLastTouchX; 3365 mSelectY = mScrollY + (int) mLastTouchY; 3366 } 3367 nativeHideCursor(); 3368 } 3369 3370 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3371 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3372 // always handle the navigation keys in the UI thread 3373 switchOutDrawHistory(); 3374 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3375 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3376 return true; 3377 } 3378 // Bubble up the key event as WebView doesn't handle it 3379 return false; 3380 } 3381 3382 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3383 switchOutDrawHistory(); 3384 if (event.getRepeatCount() == 0) { 3385 mGotCenterDown = true; 3386 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3387 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3388 // Already checked mNativeClass, so we do not need to check it 3389 // again. 3390 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3391 return true; 3392 } 3393 // Bubble up the key event as WebView doesn't handle it 3394 return false; 3395 } 3396 3397 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3398 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3399 // turn off copy select if a shift-key combo is pressed 3400 mExtendSelection = mShiftIsPressed = false; 3401 if (mTouchMode == TOUCH_SELECT_MODE) { 3402 mTouchMode = TOUCH_INIT_MODE; 3403 } 3404 } 3405 3406 if (getSettings().getNavDump()) { 3407 switch (keyCode) { 3408 case KeyEvent.KEYCODE_4: 3409 // "/data/data/com.android.browser/displayTree.txt" 3410 nativeDumpDisplayTree(getUrl()); 3411 break; 3412 case KeyEvent.KEYCODE_5: 3413 case KeyEvent.KEYCODE_6: 3414 // 5: dump the dom tree to the file 3415 // "/data/data/com.android.browser/domTree.txt" 3416 // 6: dump the dom tree to the adb log 3417 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, 3418 (keyCode == KeyEvent.KEYCODE_5) ? 1 : 0, 0); 3419 break; 3420 case KeyEvent.KEYCODE_7: 3421 case KeyEvent.KEYCODE_8: 3422 // 7: dump the render tree to the file 3423 // "/data/data/com.android.browser/renderTree.txt" 3424 // 8: dump the render tree to the adb log 3425 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, 3426 (keyCode == KeyEvent.KEYCODE_7) ? 1 : 0, 0); 3427 break; 3428 case KeyEvent.KEYCODE_9: 3429 nativeInstrumentReport(); 3430 return true; 3431 } 3432 } 3433 3434 if (nativeCursorIsPlugin()) { 3435 nativeUpdatePluginReceivesEvents(); 3436 invalidate(); 3437 } else if (nativeCursorIsTextInput()) { 3438 // This message will put the node in focus, for the DOM's notion 3439 // of focus, and make the focuscontroller active 3440 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3441 nativeCursorNodePointer()); 3442 // This will bring up the WebTextView and put it in focus, for 3443 // our view system's notion of focus 3444 rebuildWebTextView(); 3445 // Now we need to pass the event to it 3446 return mWebTextView.onKeyDown(keyCode, event); 3447 } else if (nativeHasFocusNode()) { 3448 // In this case, the cursor is not on a text input, but the focus 3449 // might be. Check it, and if so, hand over to the WebTextView. 3450 rebuildWebTextView(); 3451 if (inEditingMode()) { 3452 return mWebTextView.onKeyDown(keyCode, event); 3453 } 3454 } 3455 3456 // TODO: should we pass all the keys to DOM or check the meta tag 3457 if (nativeCursorWantsKeyEvents() || true) { 3458 // pass the key to DOM 3459 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3460 // return true as DOM handles the key 3461 return true; 3462 } 3463 3464 // Bubble up the key event as WebView doesn't handle it 3465 return false; 3466 } 3467 3468 @Override 3469 public boolean onKeyUp(int keyCode, KeyEvent event) { 3470 if (DebugFlags.WEB_VIEW) { 3471 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3472 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3473 } 3474 3475 if (mNativeClass == 0) { 3476 return false; 3477 } 3478 3479 // special CALL handling when cursor node's href is "tel:XXX" 3480 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3481 String text = nativeCursorText(); 3482 if (!nativeCursorIsTextInput() && text != null 3483 && text.startsWith(SCHEME_TEL)) { 3484 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3485 getContext().startActivity(intent); 3486 return true; 3487 } 3488 } 3489 3490 // Bubble up the key event if 3491 // 1. it is a system key; or 3492 // 2. the host application wants to handle it; 3493 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3494 return false; 3495 } 3496 3497 // special handling in scroll_zoom state 3498 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 3499 if (KeyEvent.KEYCODE_DPAD_CENTER == keyCode 3500 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN) { 3501 setZoomScrollIn(); 3502 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 3503 invalidate(); 3504 return true; 3505 } 3506 return false; 3507 } 3508 3509 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3510 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3511 if (commitCopy()) { 3512 return true; 3513 } 3514 } 3515 3516 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3517 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3518 // always handle the navigation keys in the UI thread 3519 // Bubble up the key event as WebView doesn't handle it 3520 return false; 3521 } 3522 3523 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3524 // remove the long press message first 3525 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3526 mGotCenterDown = false; 3527 3528 if (mShiftIsPressed) { 3529 return false; 3530 } 3531 if (getSettings().supportZoom() 3532 && mTouchMode == TOUCH_DOUBLECLICK_MODE) { 3533 zoomScrollOut(); 3534 } else { 3535 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3536 .obtainMessage(SWITCH_TO_CLICK), TAP_TIMEOUT); 3537 if (DebugFlags.WEB_VIEW) { 3538 Log.v(LOGTAG, "TOUCH_DOUBLECLICK_MODE"); 3539 } 3540 mTouchMode = TOUCH_DOUBLECLICK_MODE; 3541 } 3542 return true; 3543 } 3544 3545 // TODO: should we pass all the keys to DOM or check the meta tag 3546 if (nativeCursorWantsKeyEvents() || true) { 3547 // pass the key to DOM 3548 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3549 // return true as DOM handles the key 3550 return true; 3551 } 3552 3553 // Bubble up the key event as WebView doesn't handle it 3554 return false; 3555 } 3556 3557 /** 3558 * @hide 3559 */ 3560 public void emulateShiftHeld() { 3561 mExtendSelection = false; 3562 mShiftIsPressed = true; 3563 nativeHideCursor(); 3564 } 3565 3566 private boolean commitCopy() { 3567 boolean copiedSomething = false; 3568 if (mExtendSelection) { 3569 // copy region so core operates on copy without touching orig. 3570 Region selection = new Region(nativeGetSelection()); 3571 if (selection.isEmpty() == false) { 3572 Toast.makeText(mContext 3573 , com.android.internal.R.string.text_copied 3574 , Toast.LENGTH_SHORT).show(); 3575 mWebViewCore.sendMessage(EventHub.GET_SELECTION, selection); 3576 copiedSomething = true; 3577 } 3578 mExtendSelection = false; 3579 } 3580 mShiftIsPressed = false; 3581 if (mTouchMode == TOUCH_SELECT_MODE) { 3582 mTouchMode = TOUCH_INIT_MODE; 3583 } 3584 return copiedSomething; 3585 } 3586 3587 // Set this as a hierarchy change listener so we can know when this view 3588 // is removed and still have access to our parent. 3589 @Override 3590 protected void onAttachedToWindow() { 3591 super.onAttachedToWindow(); 3592 ViewParent parent = getParent(); 3593 if (parent instanceof ViewGroup) { 3594 ViewGroup p = (ViewGroup) parent; 3595 p.setOnHierarchyChangeListener(this); 3596 } 3597 } 3598 3599 @Override 3600 protected void onDetachedFromWindow() { 3601 super.onDetachedFromWindow(); 3602 ViewParent parent = getParent(); 3603 if (parent instanceof ViewGroup) { 3604 ViewGroup p = (ViewGroup) parent; 3605 p.setOnHierarchyChangeListener(null); 3606 } 3607 3608 // Clean up the zoom controller 3609 mZoomButtonsController.setVisible(false); 3610 } 3611 3612 // Implementation for OnHierarchyChangeListener 3613 public void onChildViewAdded(View parent, View child) {} 3614 3615 public void onChildViewRemoved(View p, View child) { 3616 if (child == this) { 3617 clearTextEntry(); 3618 } 3619 } 3620 3621 /** 3622 * @deprecated WebView should not have implemented 3623 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3624 * does nothing now. 3625 */ 3626 @Deprecated 3627 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3628 } 3629 3630 // To avoid drawing the cursor ring, and remove the TextView when our window 3631 // loses focus. 3632 @Override 3633 public void onWindowFocusChanged(boolean hasWindowFocus) { 3634 if (hasWindowFocus) { 3635 if (hasFocus()) { 3636 // If our window regained focus, and we have focus, then begin 3637 // drawing the cursor ring 3638 mDrawCursorRing = true; 3639 if (mNativeClass != 0) { 3640 nativeRecordButtons(true, false, true); 3641 if (inEditingMode()) { 3642 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3643 } 3644 } 3645 } else { 3646 // If our window gained focus, but we do not have it, do not 3647 // draw the cursor ring. 3648 mDrawCursorRing = false; 3649 // We do not call nativeRecordButtons here because we assume 3650 // that when we lost focus, or window focus, it got called with 3651 // false for the first parameter 3652 } 3653 } else { 3654 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3655 /* 3656 * The zoom controls come in their own window, so our window 3657 * loses focus. Our policy is to not draw the cursor ring if 3658 * our window is not focused, but this is an exception since 3659 * the user can still navigate the web page with the zoom 3660 * controls showing. 3661 */ 3662 // If our window has lost focus, stop drawing the cursor ring 3663 mDrawCursorRing = false; 3664 } 3665 mGotKeyDown = false; 3666 mShiftIsPressed = false; 3667 if (mNativeClass != 0) { 3668 nativeRecordButtons(false, false, true); 3669 } 3670 setFocusControllerInactive(); 3671 } 3672 invalidate(); 3673 super.onWindowFocusChanged(hasWindowFocus); 3674 } 3675 3676 /* 3677 * Pass a message to WebCore Thread, telling the WebCore::Page's 3678 * FocusController to be "inactive" so that it will 3679 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3680 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3681 */ 3682 /* package */ void setFocusControllerInactive() { 3683 // Do not need to also check whether mWebViewCore is null, because 3684 // mNativeClass is only set if mWebViewCore is non null 3685 if (mNativeClass == 0) return; 3686 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3687 } 3688 3689 @Override 3690 protected void onFocusChanged(boolean focused, int direction, 3691 Rect previouslyFocusedRect) { 3692 if (DebugFlags.WEB_VIEW) { 3693 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3694 } 3695 if (focused) { 3696 // When we regain focus, if we have window focus, resume drawing 3697 // the cursor ring 3698 if (hasWindowFocus()) { 3699 mDrawCursorRing = true; 3700 if (mNativeClass != 0) { 3701 nativeRecordButtons(true, false, true); 3702 } 3703 //} else { 3704 // The WebView has gained focus while we do not have 3705 // windowfocus. When our window lost focus, we should have 3706 // called nativeRecordButtons(false...) 3707 } 3708 } else { 3709 // When we lost focus, unless focus went to the TextView (which is 3710 // true if we are in editing mode), stop drawing the cursor ring. 3711 if (!inEditingMode()) { 3712 mDrawCursorRing = false; 3713 if (mNativeClass != 0) { 3714 nativeRecordButtons(false, false, true); 3715 } 3716 setFocusControllerInactive(); 3717 } 3718 mGotKeyDown = false; 3719 } 3720 3721 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3722 } 3723 3724 @Override 3725 protected void onSizeChanged(int w, int h, int ow, int oh) { 3726 super.onSizeChanged(w, h, ow, oh); 3727 // Center zooming to the center of the screen. 3728 if (mZoomScale == 0) { // unless we're already zooming 3729 mZoomCenterX = getViewWidth() * .5f; 3730 mZoomCenterY = getViewHeight() * .5f; 3731 } 3732 3733 // update mMinZoomScale if the minimum zoom scale is not fixed 3734 if (!mMinZoomScaleFixed) { 3735 mMinZoomScale = (float) getViewWidth() 3736 / (mDrawHistory ? mHistoryPicture.getWidth() 3737 : mZoomOverviewWidth); 3738 } 3739 3740 // we always force, in case our height changed, in which case we still 3741 // want to send the notification over to webkit 3742 setNewZoomScale(mActualScale, true); 3743 } 3744 3745 @Override 3746 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3747 super.onScrollChanged(l, t, oldl, oldt); 3748 3749 if (mViewingMode == READING_MODE_WITH_TITLE_BAR 3750 || mViewingMode == TITLE_BAR_DISMISS_MODE) { 3751 mViewingMode = READING_MODE; 3752 mCallbackProxy.uiOnChangeViewingMode(mViewingMode); 3753 } 3754 3755 sendOurVisibleRect(); 3756 } 3757 3758 3759 @Override 3760 public boolean dispatchKeyEvent(KeyEvent event) { 3761 boolean dispatch = true; 3762 3763 if (!inEditingMode()) { 3764 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3765 mGotKeyDown = true; 3766 } else { 3767 if (!mGotKeyDown) { 3768 /* 3769 * We got a key up for which we were not the recipient of 3770 * the original key down. Don't give it to the view. 3771 */ 3772 dispatch = false; 3773 } 3774 mGotKeyDown = false; 3775 } 3776 } 3777 3778 if (dispatch) { 3779 return super.dispatchKeyEvent(event); 3780 } else { 3781 // We didn't dispatch, so let something else handle the key 3782 return false; 3783 } 3784 } 3785 3786 // Here are the snap align logic: 3787 // 1. If it starts nearly horizontally or vertically, snap align; 3788 // 2. If there is a dramitic direction change, let it go; 3789 // 3. If there is a same direction back and forth, lock it. 3790 3791 // adjustable parameters 3792 private int mMinLockSnapReverseDistance; 3793 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 3794 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 3795 3796 @Override 3797 public boolean onTouchEvent(MotionEvent ev) { 3798 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 3799 return false; 3800 } 3801 3802 if (DebugFlags.WEB_VIEW) { 3803 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 3804 + mTouchMode); 3805 } 3806 3807 int action = ev.getAction(); 3808 float x = ev.getX(); 3809 float y = ev.getY(); 3810 long eventTime = ev.getEventTime(); 3811 3812 // Due to the touch screen edge effect, a touch closer to the edge 3813 // always snapped to the edge. As getViewWidth() can be different from 3814 // getWidth() due to the scrollbar, adjusting the point to match 3815 // getViewWidth(). Same applied to the height. 3816 if (x > getViewWidth() - 1) { 3817 x = getViewWidth() - 1; 3818 } 3819 if (y > getViewHeight() - 1) { 3820 y = getViewHeight() - 1; 3821 } 3822 3823 // pass the touch events from UI thread to WebCore thread 3824 if (mForwardTouchEvents && mTouchMode != SCROLL_ZOOM_OUT 3825 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN 3826 && mTouchMode != SCROLL_ZOOM_ANIMATION_OUT 3827 && (action != MotionEvent.ACTION_MOVE || 3828 eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 3829 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 3830 ted.mAction = action; 3831 ted.mX = viewToContent((int) x + mScrollX); 3832 ted.mY = viewToContent((int) y + mScrollY); 3833 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 3834 mLastSentTouchTime = eventTime; 3835 } 3836 3837 int deltaX = (int) (mLastTouchX - x); 3838 int deltaY = (int) (mLastTouchY - y); 3839 3840 switch (action) { 3841 case MotionEvent.ACTION_DOWN: { 3842 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3843 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3844 // no interaction while animation is in progress 3845 break; 3846 } else if (mTouchMode == SCROLL_ZOOM_OUT) { 3847 mLastScrollX = mZoomScrollX; 3848 mLastScrollY = mZoomScrollY; 3849 // If two taps are close, ignore the first tap 3850 } else if (!mScroller.isFinished()) { 3851 mScroller.abortAnimation(); 3852 mTouchMode = TOUCH_DRAG_START_MODE; 3853 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 3854 } else if (mShiftIsPressed) { 3855 mSelectX = mScrollX + (int) x; 3856 mSelectY = mScrollY + (int) y; 3857 mTouchMode = TOUCH_SELECT_MODE; 3858 if (DebugFlags.WEB_VIEW) { 3859 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 3860 } 3861 nativeMoveSelection(viewToContent(mSelectX) 3862 , viewToContent(mSelectY), false); 3863 mTouchSelection = mExtendSelection = true; 3864 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 3865 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 3866 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 3867 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 3868 } else { 3869 // commit the short press action for the previous tap 3870 doShortPress(); 3871 // continue, mTouchMode should be still TOUCH_INIT_MODE 3872 } 3873 } else { 3874 mTouchMode = TOUCH_INIT_MODE; 3875 mPreventDrag = mForwardTouchEvents; 3876 mWebViewCore.sendMessage( 3877 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 3878 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 3879 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 3880 (eventTime - mLastTouchUpTime), eventTime); 3881 } 3882 } 3883 // Trigger the link 3884 if (mTouchMode == TOUCH_INIT_MODE 3885 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3886 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3887 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 3888 } 3889 // Remember where the motion event started 3890 mLastTouchX = x; 3891 mLastTouchY = y; 3892 mLastTouchTime = eventTime; 3893 mVelocityTracker = VelocityTracker.obtain(); 3894 mSnapScrollMode = SNAP_NONE; 3895 break; 3896 } 3897 case MotionEvent.ACTION_MOVE: { 3898 if (mTouchMode == TOUCH_DONE_MODE 3899 || mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3900 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3901 // no dragging during scroll zoom animation 3902 break; 3903 } 3904 if (mTouchMode == SCROLL_ZOOM_OUT) { 3905 // while fully zoomed out, move the virtual window 3906 moveZoomScrollWindow(x, y); 3907 break; 3908 } 3909 mVelocityTracker.addMovement(ev); 3910 3911 if (mTouchMode != TOUCH_DRAG_MODE) { 3912 if (mTouchMode == TOUCH_SELECT_MODE) { 3913 mSelectX = mScrollX + (int) x; 3914 mSelectY = mScrollY + (int) y; 3915 if (DebugFlags.WEB_VIEW) { 3916 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 3917 } 3918 nativeMoveSelection(viewToContent(mSelectX) 3919 , viewToContent(mSelectY), true); 3920 invalidate(); 3921 break; 3922 } 3923 if (mPreventDrag || (deltaX * deltaX + deltaY * deltaY) 3924 < mTouchSlopSquare) { 3925 break; 3926 } 3927 3928 if (mTouchMode == TOUCH_SHORTPRESS_MODE 3929 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3930 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3931 } else if (mTouchMode == TOUCH_INIT_MODE 3932 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3933 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3934 } 3935 3936 // if it starts nearly horizontal or vertical, enforce it 3937 int ax = Math.abs(deltaX); 3938 int ay = Math.abs(deltaY); 3939 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 3940 mSnapScrollMode = SNAP_X; 3941 mSnapPositive = deltaX > 0; 3942 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 3943 mSnapScrollMode = SNAP_Y; 3944 mSnapPositive = deltaY > 0; 3945 } 3946 3947 mTouchMode = TOUCH_DRAG_MODE; 3948 WebViewCore.pauseUpdate(mWebViewCore); 3949 if (!mDragFromTextInput) { 3950 nativeHideCursor(); 3951 } 3952 WebSettings settings = getSettings(); 3953 if (settings.supportZoom() 3954 && settings.getBuiltInZoomControls() 3955 && !mZoomButtonsController.isVisible() 3956 && (canZoomScrollOut() || 3957 mMinZoomScale < mMaxZoomScale)) { 3958 mZoomButtonsController.setVisible(true); 3959 } 3960 } 3961 3962 // do pan 3963 int newScrollX = pinLocX(mScrollX + deltaX); 3964 deltaX = newScrollX - mScrollX; 3965 int newScrollY = pinLocY(mScrollY + deltaY); 3966 deltaY = newScrollY - mScrollY; 3967 boolean done = false; 3968 if (deltaX == 0 && deltaY == 0) { 3969 // The user attempted to pan the page, so dismiss the title 3970 // bar 3971 if (mViewingMode == READING_MODE_WITH_TITLE_BAR 3972 || mViewingMode == TITLE_BAR_DISMISS_MODE) { 3973 mViewingMode = READING_MODE; 3974 mCallbackProxy.uiOnChangeViewingMode(mViewingMode); 3975 } 3976 done = true; 3977 } else { 3978 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 3979 int ax = Math.abs(deltaX); 3980 int ay = Math.abs(deltaY); 3981 if (mSnapScrollMode == SNAP_X) { 3982 // radical change means getting out of snap mode 3983 if (ay > MAX_SLOPE_FOR_DIAG * ax 3984 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3985 mSnapScrollMode = SNAP_NONE; 3986 } 3987 // reverse direction means lock in the snap mode 3988 if ((ax > MAX_SLOPE_FOR_DIAG * ay) && 3989 ((mSnapPositive && 3990 deltaX < -mMinLockSnapReverseDistance) 3991 || (!mSnapPositive && 3992 deltaX > mMinLockSnapReverseDistance))) { 3993 mSnapScrollMode = SNAP_X_LOCK; 3994 } 3995 } else { 3996 // radical change means getting out of snap mode 3997 if ((ax > MAX_SLOPE_FOR_DIAG * ay) 3998 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3999 mSnapScrollMode = SNAP_NONE; 4000 } 4001 // reverse direction means lock in the snap mode 4002 if ((ay > MAX_SLOPE_FOR_DIAG * ax) && 4003 ((mSnapPositive && 4004 deltaY < -mMinLockSnapReverseDistance) 4005 || (!mSnapPositive && 4006 deltaY > mMinLockSnapReverseDistance))) { 4007 mSnapScrollMode = SNAP_Y_LOCK; 4008 } 4009 } 4010 } 4011 4012 if (mSnapScrollMode == SNAP_X 4013 || mSnapScrollMode == SNAP_X_LOCK) { 4014 scrollBy(deltaX, 0); 4015 mLastTouchX = x; 4016 } else if (mSnapScrollMode == SNAP_Y 4017 || mSnapScrollMode == SNAP_Y_LOCK) { 4018 scrollBy(0, deltaY); 4019 mLastTouchY = y; 4020 } else { 4021 scrollBy(deltaX, deltaY); 4022 mLastTouchX = x; 4023 mLastTouchY = y; 4024 } 4025 mLastTouchTime = eventTime; 4026 mUserScroll = true; 4027 } 4028 4029 if (!getSettings().getBuiltInZoomControls()) { 4030 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 4031 boolean showMagnify = canZoomScrollOut(); 4032 if (mZoomControls != null && (showPlusMinus || showMagnify)) { 4033 if (mZoomControls.getVisibility() == View.VISIBLE) { 4034 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4035 } else { 4036 mZoomControls.show(showPlusMinus, showMagnify); 4037 } 4038 mPrivateHandler.postDelayed(mZoomControlRunnable, 4039 ZOOM_CONTROLS_TIMEOUT); 4040 } 4041 } 4042 4043 if (done) { 4044 // return false to indicate that we can't pan out of the 4045 // view space 4046 return false; 4047 } 4048 break; 4049 } 4050 case MotionEvent.ACTION_UP: { 4051 mLastTouchUpTime = eventTime; 4052 switch (mTouchMode) { 4053 case TOUCH_DOUBLE_TAP_MODE: // double tap 4054 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4055 mTouchMode = TOUCH_DONE_MODE; 4056 doDoubleTap(); 4057 break; 4058 case TOUCH_INIT_MODE: // tap 4059 if (ENABLE_DOUBLETAP_ZOOM) { 4060 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4061 if (!mPreventDrag) { 4062 mPrivateHandler.sendMessageDelayed( 4063 mPrivateHandler.obtainMessage( 4064 RELEASE_SINGLE_TAP), 4065 ViewConfiguration.getDoubleTapTimeout()); 4066 } 4067 break; 4068 } 4069 // fall through 4070 case TOUCH_SHORTPRESS_START_MODE: 4071 case TOUCH_SHORTPRESS_MODE: 4072 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4073 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4074 mTouchMode = TOUCH_DONE_MODE; 4075 doShortPress(); 4076 break; 4077 case TOUCH_SELECT_MODE: 4078 commitCopy(); 4079 mTouchSelection = false; 4080 break; 4081 case SCROLL_ZOOM_ANIMATION_IN: 4082 case SCROLL_ZOOM_ANIMATION_OUT: 4083 // no action during scroll animation 4084 break; 4085 case SCROLL_ZOOM_OUT: 4086 if (DebugFlags.WEB_VIEW) { 4087 Log.v(LOGTAG, "ACTION_UP SCROLL_ZOOM_OUT" 4088 + " eventTime - mLastTouchTime=" 4089 + (eventTime - mLastTouchTime)); 4090 } 4091 // for now, always zoom back when the drag completes 4092 if (true || eventTime - mLastTouchTime < TAP_TIMEOUT) { 4093 // but if we tap, zoom in where we tap 4094 if (eventTime - mLastTouchTime < TAP_TIMEOUT) { 4095 zoomScrollTap(x, y); 4096 } 4097 // start zooming in back to the original view 4098 setZoomScrollIn(); 4099 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 4100 invalidate(); 4101 } 4102 break; 4103 case TOUCH_DRAG_MODE: 4104 // if the user waits a while w/o moving before the 4105 // up, we don't want to do a fling 4106 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4107 mVelocityTracker.addMovement(ev); 4108 doFling(); 4109 break; 4110 } 4111 WebViewCore.resumeUpdate(mWebViewCore); 4112 break; 4113 case TOUCH_DRAG_START_MODE: 4114 case TOUCH_DONE_MODE: 4115 // do nothing 4116 break; 4117 } 4118 // we also use mVelocityTracker == null to tell us that we are 4119 // not "moving around", so we can take the slower/prettier 4120 // mode in the drawing code 4121 if (mVelocityTracker != null) { 4122 mVelocityTracker.recycle(); 4123 mVelocityTracker = null; 4124 } 4125 break; 4126 } 4127 case MotionEvent.ACTION_CANCEL: { 4128 // we also use mVelocityTracker == null to tell us that we are 4129 // not "moving around", so we can take the slower/prettier 4130 // mode in the drawing code 4131 if (mVelocityTracker != null) { 4132 mVelocityTracker.recycle(); 4133 mVelocityTracker = null; 4134 } 4135 if (mTouchMode == SCROLL_ZOOM_OUT || 4136 mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 4137 scrollTo(mZoomScrollX, mZoomScrollY); 4138 } else if (mTouchMode == TOUCH_DRAG_MODE) { 4139 WebViewCore.resumeUpdate(mWebViewCore); 4140 } 4141 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4142 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4143 mTouchMode = TOUCH_DONE_MODE; 4144 nativeHideCursor(); 4145 break; 4146 } 4147 } 4148 return true; 4149 } 4150 4151 private long mTrackballFirstTime = 0; 4152 private long mTrackballLastTime = 0; 4153 private float mTrackballRemainsX = 0.0f; 4154 private float mTrackballRemainsY = 0.0f; 4155 private int mTrackballXMove = 0; 4156 private int mTrackballYMove = 0; 4157 private boolean mExtendSelection = false; 4158 private boolean mTouchSelection = false; 4159 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4160 private static final int TRACKBALL_TIMEOUT = 200; 4161 private static final int TRACKBALL_WAIT = 100; 4162 private static final int TRACKBALL_SCALE = 400; 4163 private static final int TRACKBALL_SCROLL_COUNT = 5; 4164 private static final int TRACKBALL_MOVE_COUNT = 10; 4165 private static final int TRACKBALL_MULTIPLIER = 3; 4166 private static final int SELECT_CURSOR_OFFSET = 16; 4167 private int mSelectX = 0; 4168 private int mSelectY = 0; 4169 private boolean mShiftIsPressed = false; 4170 private boolean mTrackballDown = false; 4171 private long mTrackballUpTime = 0; 4172 private long mLastCursorTime = 0; 4173 private Rect mLastCursorBounds; 4174 4175 // Set by default; BrowserActivity clears to interpret trackball data 4176 // directly for movement. Currently, the framework only passes 4177 // arrow key events, not trackball events, from one child to the next 4178 private boolean mMapTrackballToArrowKeys = true; 4179 4180 public void setMapTrackballToArrowKeys(boolean setMap) { 4181 mMapTrackballToArrowKeys = setMap; 4182 } 4183 4184 void resetTrackballTime() { 4185 mTrackballLastTime = 0; 4186 } 4187 4188 @Override 4189 public boolean onTrackballEvent(MotionEvent ev) { 4190 long time = ev.getEventTime(); 4191 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4192 if (ev.getY() > 0) pageDown(true); 4193 if (ev.getY() < 0) pageUp(true); 4194 return true; 4195 } 4196 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4197 mPrivateHandler.removeMessages(SWITCH_TO_CLICK); 4198 mTrackballDown = true; 4199 if (mNativeClass == 0) { 4200 return false; 4201 } 4202 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4203 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4204 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4205 nativeSelectBestAt(mLastCursorBounds); 4206 } 4207 if (DebugFlags.WEB_VIEW) { 4208 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4209 + " time=" + time 4210 + " mLastCursorTime=" + mLastCursorTime); 4211 } 4212 if (isInTouchMode()) requestFocusFromTouch(); 4213 return false; // let common code in onKeyDown at it 4214 } 4215 if (ev.getAction() == MotionEvent.ACTION_UP) { 4216 // LONG_PRESS_CENTER is set in common onKeyDown 4217 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4218 mTrackballDown = false; 4219 mTrackballUpTime = time; 4220 if (mShiftIsPressed) { 4221 if (mExtendSelection) { 4222 commitCopy(); 4223 } else { 4224 mExtendSelection = true; 4225 } 4226 } 4227 if (DebugFlags.WEB_VIEW) { 4228 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4229 + " time=" + time 4230 ); 4231 } 4232 return false; // let common code in onKeyUp at it 4233 } 4234 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4235 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4236 return false; 4237 } 4238 // no move if we're still waiting on SWITCH_TO_CLICK timeout 4239 if (mTouchMode == TOUCH_DOUBLECLICK_MODE) { 4240 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent 2 click quit"); 4241 return true; 4242 } 4243 if (mTrackballDown) { 4244 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4245 return true; // discard move if trackball is down 4246 } 4247 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4248 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4249 return true; 4250 } 4251 // TODO: alternatively we can do panning as touch does 4252 switchOutDrawHistory(); 4253 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4254 if (DebugFlags.WEB_VIEW) { 4255 Log.v(LOGTAG, "onTrackballEvent time=" 4256 + time + " last=" + mTrackballLastTime); 4257 } 4258 mTrackballFirstTime = time; 4259 mTrackballXMove = mTrackballYMove = 0; 4260 } 4261 mTrackballLastTime = time; 4262 if (DebugFlags.WEB_VIEW) { 4263 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4264 } 4265 mTrackballRemainsX += ev.getX(); 4266 mTrackballRemainsY += ev.getY(); 4267 doTrackball(time); 4268 return true; 4269 } 4270 4271 void moveSelection(float xRate, float yRate) { 4272 if (mNativeClass == 0) 4273 return; 4274 int width = getViewWidth(); 4275 int height = getViewHeight(); 4276 mSelectX += scaleTrackballX(xRate, width); 4277 mSelectY += scaleTrackballY(yRate, height); 4278 int maxX = width + mScrollX; 4279 int maxY = height + mScrollY; 4280 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4281 , mSelectX)); 4282 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4283 , mSelectY)); 4284 if (DebugFlags.WEB_VIEW) { 4285 Log.v(LOGTAG, "moveSelection" 4286 + " mSelectX=" + mSelectX 4287 + " mSelectY=" + mSelectY 4288 + " mScrollX=" + mScrollX 4289 + " mScrollY=" + mScrollY 4290 + " xRate=" + xRate 4291 + " yRate=" + yRate 4292 ); 4293 } 4294 nativeMoveSelection(viewToContent(mSelectX) 4295 , viewToContent(mSelectY), mExtendSelection); 4296 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4297 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4298 : 0; 4299 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4300 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4301 : 0; 4302 pinScrollBy(scrollX, scrollY, true, 0); 4303 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4304 requestRectangleOnScreen(select); 4305 invalidate(); 4306 } 4307 4308 private int scaleTrackballX(float xRate, int width) { 4309 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4310 int nextXMove = xMove; 4311 if (xMove > 0) { 4312 if (xMove > mTrackballXMove) { 4313 xMove -= mTrackballXMove; 4314 } 4315 } else if (xMove < mTrackballXMove) { 4316 xMove -= mTrackballXMove; 4317 } 4318 mTrackballXMove = nextXMove; 4319 return xMove; 4320 } 4321 4322 private int scaleTrackballY(float yRate, int height) { 4323 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4324 int nextYMove = yMove; 4325 if (yMove > 0) { 4326 if (yMove > mTrackballYMove) { 4327 yMove -= mTrackballYMove; 4328 } 4329 } else if (yMove < mTrackballYMove) { 4330 yMove -= mTrackballYMove; 4331 } 4332 mTrackballYMove = nextYMove; 4333 return yMove; 4334 } 4335 4336 private int keyCodeToSoundsEffect(int keyCode) { 4337 switch(keyCode) { 4338 case KeyEvent.KEYCODE_DPAD_UP: 4339 return SoundEffectConstants.NAVIGATION_UP; 4340 case KeyEvent.KEYCODE_DPAD_RIGHT: 4341 return SoundEffectConstants.NAVIGATION_RIGHT; 4342 case KeyEvent.KEYCODE_DPAD_DOWN: 4343 return SoundEffectConstants.NAVIGATION_DOWN; 4344 case KeyEvent.KEYCODE_DPAD_LEFT: 4345 return SoundEffectConstants.NAVIGATION_LEFT; 4346 } 4347 throw new IllegalArgumentException("keyCode must be one of " + 4348 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4349 "KEYCODE_DPAD_LEFT}."); 4350 } 4351 4352 private void doTrackball(long time) { 4353 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4354 if (elapsed == 0) { 4355 elapsed = TRACKBALL_TIMEOUT; 4356 } 4357 float xRate = mTrackballRemainsX * 1000 / elapsed; 4358 float yRate = mTrackballRemainsY * 1000 / elapsed; 4359 if (mShiftIsPressed) { 4360 moveSelection(xRate, yRate); 4361 mTrackballRemainsX = mTrackballRemainsY = 0; 4362 return; 4363 } 4364 float ax = Math.abs(xRate); 4365 float ay = Math.abs(yRate); 4366 float maxA = Math.max(ax, ay); 4367 if (DebugFlags.WEB_VIEW) { 4368 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4369 + " xRate=" + xRate 4370 + " yRate=" + yRate 4371 + " mTrackballRemainsX=" + mTrackballRemainsX 4372 + " mTrackballRemainsY=" + mTrackballRemainsY); 4373 } 4374 int width = mContentWidth - getViewWidth(); 4375 int height = mContentHeight - getViewHeight(); 4376 if (width < 0) width = 0; 4377 if (height < 0) height = 0; 4378 if (mTouchMode == SCROLL_ZOOM_OUT) { 4379 int oldX = mZoomScrollX; 4380 int oldY = mZoomScrollY; 4381 int maxWH = Math.max(width, height); 4382 mZoomScrollX += scaleTrackballX(xRate, maxWH); 4383 mZoomScrollY += scaleTrackballY(yRate, maxWH); 4384 if (DebugFlags.WEB_VIEW) { 4385 Log.v(LOGTAG, "doTrackball SCROLL_ZOOM_OUT" 4386 + " mZoomScrollX=" + mZoomScrollX 4387 + " mZoomScrollY=" + mZoomScrollY); 4388 } 4389 mZoomScrollX = Math.min(width, Math.max(0, mZoomScrollX)); 4390 mZoomScrollY = Math.min(height, Math.max(0, mZoomScrollY)); 4391 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 4392 invalidate(); 4393 } 4394 mTrackballRemainsX = mTrackballRemainsY = 0; 4395 return; 4396 } 4397 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4398 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4399 maxA = Math.max(ax, ay); 4400 int count = Math.max(0, (int) maxA); 4401 int oldScrollX = mScrollX; 4402 int oldScrollY = mScrollY; 4403 if (count > 0) { 4404 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4405 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4406 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4407 KeyEvent.KEYCODE_DPAD_RIGHT; 4408 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4409 if (DebugFlags.WEB_VIEW) { 4410 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4411 + " count=" + count 4412 + " mTrackballRemainsX=" + mTrackballRemainsX 4413 + " mTrackballRemainsY=" + mTrackballRemainsY); 4414 } 4415 if (navHandledKey(selectKeyCode, count, false, time, false)) { 4416 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4417 } 4418 mTrackballRemainsX = mTrackballRemainsY = 0; 4419 } 4420 if (count >= TRACKBALL_SCROLL_COUNT) { 4421 int xMove = scaleTrackballX(xRate, width); 4422 int yMove = scaleTrackballY(yRate, height); 4423 if (DebugFlags.WEB_VIEW) { 4424 Log.v(LOGTAG, "doTrackball pinScrollBy" 4425 + " count=" + count 4426 + " xMove=" + xMove + " yMove=" + yMove 4427 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4428 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4429 ); 4430 } 4431 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4432 xMove = 0; 4433 } 4434 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4435 yMove = 0; 4436 } 4437 if (xMove != 0 || yMove != 0) { 4438 pinScrollBy(xMove, yMove, true, 0); 4439 } 4440 mUserScroll = true; 4441 } 4442 } 4443 4444 public void flingScroll(int vx, int vy) { 4445 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4446 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4447 4448 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 4449 invalidate(); 4450 } 4451 4452 private void doFling() { 4453 if (mVelocityTracker == null) { 4454 return; 4455 } 4456 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4457 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4458 4459 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 4460 int vx = (int) mVelocityTracker.getXVelocity(); 4461 int vy = (int) mVelocityTracker.getYVelocity(); 4462 4463 if (mSnapScrollMode != SNAP_NONE) { 4464 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_X_LOCK) { 4465 vy = 0; 4466 } else { 4467 vx = 0; 4468 } 4469 } 4470 4471 if (true /* EMG release: make our fling more like Maps' */) { 4472 // maps cuts their velocity in half 4473 vx = vx * 3 / 4; 4474 vy = vy * 3 / 4; 4475 } 4476 4477 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 4478 // TODO: duration is calculated based on velocity, if the range is 4479 // small, the animation will stop before duration is up. We may 4480 // want to calculate how long the animation is going to run to precisely 4481 // resume the webcore update. 4482 final int time = mScroller.getDuration(); 4483 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_UPDATE, time); 4484 invalidate(); 4485 } 4486 4487 private boolean zoomWithPreview(float scale) { 4488 float oldScale = mActualScale; 4489 mInitialScrollX = mScrollX; 4490 mInitialScrollY = mScrollY; 4491 4492 // snap to DEFAULT_SCALE if it is close 4493 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 4494 scale = mDefaultScale; 4495 } 4496 4497 setNewZoomScale(scale, false); 4498 4499 if (oldScale != mActualScale) { 4500 // use mZoomPickerScale to see zoom preview first 4501 mZoomStart = SystemClock.uptimeMillis(); 4502 mInvInitialZoomScale = 1.0f / oldScale; 4503 mInvFinalZoomScale = 1.0f / mActualScale; 4504 mZoomScale = mActualScale; 4505 if (!mInZoomOverview) { 4506 mLastScale = scale; 4507 } 4508 invalidate(); 4509 return true; 4510 } else { 4511 return false; 4512 } 4513 } 4514 4515 /** 4516 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 4517 * in charge of installing this view to the view hierarchy. This view will 4518 * become visible when the user starts scrolling via touch and fade away if 4519 * the user does not interact with it. 4520 * <p/> 4521 * API version 3 introduces a built-in zoom mechanism that is shown 4522 * automatically by the MapView. This is the preferred approach for 4523 * showing the zoom UI. 4524 * 4525 * @deprecated The built-in zoom mechanism is preferred, see 4526 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 4527 */ 4528 @Deprecated 4529 public View getZoomControls() { 4530 if (!getSettings().supportZoom()) { 4531 Log.w(LOGTAG, "This WebView doesn't support zoom."); 4532 return null; 4533 } 4534 if (mZoomControls == null) { 4535 mZoomControls = createZoomControls(); 4536 4537 /* 4538 * need to be set to VISIBLE first so that getMeasuredHeight() in 4539 * {@link #onSizeChanged()} can return the measured value for proper 4540 * layout. 4541 */ 4542 mZoomControls.setVisibility(View.VISIBLE); 4543 mZoomControlRunnable = new Runnable() { 4544 public void run() { 4545 4546 /* Don't dismiss the controls if the user has 4547 * focus on them. Wait and check again later. 4548 */ 4549 if (!mZoomControls.hasFocus()) { 4550 mZoomControls.hide(); 4551 } else { 4552 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4553 mPrivateHandler.postDelayed(mZoomControlRunnable, 4554 ZOOM_CONTROLS_TIMEOUT); 4555 } 4556 } 4557 }; 4558 } 4559 return mZoomControls; 4560 } 4561 4562 private ExtendedZoomControls createZoomControls() { 4563 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 4564 , null); 4565 zoomControls.setOnZoomInClickListener(new OnClickListener() { 4566 public void onClick(View v) { 4567 // reset time out 4568 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4569 mPrivateHandler.postDelayed(mZoomControlRunnable, 4570 ZOOM_CONTROLS_TIMEOUT); 4571 zoomIn(); 4572 } 4573 }); 4574 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 4575 public void onClick(View v) { 4576 // reset time out 4577 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4578 mPrivateHandler.postDelayed(mZoomControlRunnable, 4579 ZOOM_CONTROLS_TIMEOUT); 4580 zoomOut(); 4581 } 4582 }); 4583 zoomControls.setOnZoomMagnifyClickListener(new OnClickListener() { 4584 public void onClick(View v) { 4585 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4586 mPrivateHandler.postDelayed(mZoomControlRunnable, 4587 ZOOM_CONTROLS_TIMEOUT); 4588 zoomScrollOut(); 4589 } 4590 }); 4591 return zoomControls; 4592 } 4593 4594 /** 4595 * Gets the {@link ZoomButtonsController} which can be used to add 4596 * additional buttons to the zoom controls window. 4597 * 4598 * @return The instance of {@link ZoomButtonsController} used by this class, 4599 * or null if it is unavailable. 4600 * @hide 4601 */ 4602 public ZoomButtonsController getZoomButtonsController() { 4603 return mZoomButtonsController; 4604 } 4605 4606 /** 4607 * Perform zoom in in the webview 4608 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 4609 */ 4610 public boolean zoomIn() { 4611 // TODO: alternatively we can disallow this during draw history mode 4612 switchOutDrawHistory(); 4613 // Center zooming to the center of the screen. 4614 if (mInZoomOverview) { 4615 // if in overview mode, bring it back to normal mode 4616 mLastTouchX = getViewWidth() * .5f; 4617 mLastTouchY = getViewHeight() * .5f; 4618 doDoubleTap(); 4619 return true; 4620 } else { 4621 mZoomCenterX = getViewWidth() * .5f; 4622 mZoomCenterY = getViewHeight() * .5f; 4623 return zoomWithPreview(mActualScale * 1.25f); 4624 } 4625 } 4626 4627 /** 4628 * Perform zoom out in the webview 4629 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 4630 */ 4631 public boolean zoomOut() { 4632 // TODO: alternatively we can disallow this during draw history mode 4633 switchOutDrawHistory(); 4634 float scale = mActualScale * 0.8f; 4635 if (scale < (mMinZoomScale + 0.1f) && WebView.ENABLE_DOUBLETAP_ZOOM 4636 && mWebViewCore.getSettings().getUseWideViewPort()) { 4637 // when zoom out to min scale, switch to overview mode 4638 doDoubleTap(); 4639 return true; 4640 } else { 4641 // Center zooming to the center of the screen. 4642 mZoomCenterX = getViewWidth() * .5f; 4643 mZoomCenterY = getViewHeight() * .5f; 4644 return zoomWithPreview(scale); 4645 } 4646 } 4647 4648 private void updateSelection() { 4649 if (mNativeClass == 0) { 4650 return; 4651 } 4652 // mLastTouchX and mLastTouchY are the point in the current viewport 4653 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4654 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4655 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 4656 contentX + mNavSlop, contentY + mNavSlop); 4657 nativeSelectBestAt(rect); 4658 } 4659 4660 /** 4661 * Scroll the focused text field/area to match the WebTextView 4662 * @param x New x position of the WebTextView in view coordinates 4663 * @param y New y position of the WebTextView in view coordinates 4664 */ 4665 /*package*/ void scrollFocusedTextInput(int x, int y) { 4666 if (!inEditingMode() || mWebViewCore == null) { 4667 return; 4668 } 4669 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, viewToContent(x), 4670 viewToContent(y)); 4671 } 4672 4673 /** 4674 * Set our starting point and time for a drag from the WebTextView. 4675 */ 4676 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 4677 if (!inEditingMode()) { 4678 return; 4679 } 4680 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 4681 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 4682 mLastTouchTime = eventTime; 4683 if (!mScroller.isFinished()) { 4684 mScroller.abortAnimation(); 4685 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 4686 } 4687 mSnapScrollMode = SNAP_NONE; 4688 mVelocityTracker = VelocityTracker.obtain(); 4689 mTouchMode = TOUCH_DRAG_START_MODE; 4690 } 4691 4692 /** 4693 * Given a motion event from the WebTextView, set its location to our 4694 * coordinates, and handle the event. 4695 */ 4696 /*package*/ boolean textFieldDrag(MotionEvent event) { 4697 if (!inEditingMode()) { 4698 return false; 4699 } 4700 mDragFromTextInput = true; 4701 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 4702 (float) (mWebTextView.getTop() - mScrollY)); 4703 boolean result = onTouchEvent(event); 4704 mDragFromTextInput = false; 4705 return result; 4706 } 4707 4708 /** 4709 * Do a touch up from a WebTextView. This will be handled by webkit to 4710 * change the selection. 4711 * @param event MotionEvent in the WebTextView's coordinates. 4712 */ 4713 /*package*/ void touchUpOnTextField(MotionEvent event) { 4714 if (!inEditingMode()) { 4715 return; 4716 } 4717 int x = viewToContent((int) event.getX() + mWebTextView.getLeft()); 4718 int y = viewToContent((int) event.getY() + mWebTextView.getTop()); 4719 nativeTextInputMotionUp(x, y); 4720 } 4721 4722 /*package*/ void shortPressOnTextField() { 4723 if (inEditingMode()) { 4724 View v = mWebTextView; 4725 int x = viewToContent((v.getLeft() + v.getRight()) >> 1); 4726 int y = viewToContent((v.getTop() + v.getBottom()) >> 1); 4727 nativeTextInputMotionUp(x, y); 4728 } 4729 } 4730 4731 private void doShortPress() { 4732 if (mNativeClass == 0) { 4733 return; 4734 } 4735 switchOutDrawHistory(); 4736 // mLastTouchX and mLastTouchY are the point in the current viewport 4737 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4738 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4739 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 4740 if (mLogEvent) { 4741 Checkin.updateStats(mContext.getContentResolver(), 4742 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 4743 } 4744 } 4745 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 4746 playSoundEffect(SoundEffectConstants.CLICK); 4747 } 4748 } 4749 4750 /** 4751 * Called when the Tabs are used to slide this WebView's tab into view. 4752 * @hide 4753 */ 4754 public void slideIntoFocus() { 4755 if (mViewingMode == READING_MODE) { 4756 if (!mMobileSite || (mScrollX | mScrollY) != 0) { 4757 mViewingMode = READING_MODE_WITH_TITLE_BAR; 4758 } else { 4759 mViewingMode = TITLE_BAR_DISMISS_MODE; 4760 } 4761 mCallbackProxy.uiOnChangeViewingMode(mViewingMode); 4762 } 4763 } 4764 4765 private void doDoubleTap() { 4766 if (mWebViewCore.getSettings().getUseWideViewPort() == false || 4767 mViewingMode == NO_VIEWING_MODE) { 4768 return; 4769 } 4770 if (mViewingMode == TITLE_BAR_DISMISS_MODE) { 4771 mViewingMode = READING_MODE; 4772 // mInZoomOverview will not change, so change the viewing mode 4773 // and return 4774 mCallbackProxy.uiOnChangeViewingMode(mViewingMode); 4775 return; 4776 } 4777 if (mViewingMode == READING_MODE_WITH_TITLE_BAR && mMobileSite) { 4778 scrollTo(0,0); 4779 } 4780 // READING_MODE_WITH_TITLE_BAR will go to OVERVIEW_MODE here. 4781 mZoomCenterX = mLastTouchX; 4782 mZoomCenterY = mLastTouchY; 4783 mInZoomOverview = !mInZoomOverview; 4784 mViewingMode = mInZoomOverview ? OVERVIEW_MODE : READING_MODE; 4785 mCallbackProxy.uiOnChangeViewingMode(mViewingMode); 4786 // remove the zoom control after double tap 4787 if (getSettings().getBuiltInZoomControls()) { 4788 if (mZoomButtonsController.isVisible()) { 4789 mZoomButtonsController.setVisible(false); 4790 } 4791 } else { 4792 if (mZoomControlRunnable != null) { 4793 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4794 } 4795 if (mZoomControls != null) { 4796 mZoomControls.hide(); 4797 } 4798 } 4799 if (mInZoomOverview) { 4800 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth); 4801 } else { 4802 // mLastTouchX and mLastTouchY are the point in the current viewport 4803 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4804 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4805 int left = nativeGetBlockLeftEdge(contentX, contentY, mActualScale); 4806 if (left != NO_LEFTEDGE) { 4807 // add a 5pt padding to the left edge. Re-calculate the zoom 4808 // center so that the new scroll x will be on the left edge. 4809 mZoomCenterX = left < 5 ? 0 : (left - 5) * mLastScale 4810 * mActualScale / (mLastScale - mActualScale); 4811 } 4812 zoomWithPreview(mLastScale); 4813 } 4814 } 4815 4816 // Called by JNI to handle a touch on a node representing an email address, 4817 // address, or phone number 4818 private void overrideLoading(String url) { 4819 mCallbackProxy.uiOverrideUrlLoading(url); 4820 } 4821 4822 // called by JNI 4823 private void sendPluginState(int state) { 4824 WebViewCore.PluginStateData psd = new WebViewCore.PluginStateData(); 4825 psd.mFrame = nativeCursorFramePointer(); 4826 psd.mNode = nativeCursorNodePointer(); 4827 psd.mState = state; 4828 mWebViewCore.sendMessage(EventHub.PLUGIN_STATE, psd); 4829 } 4830 4831 @Override 4832 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 4833 boolean result = false; 4834 if (inEditingMode()) { 4835 result = mWebTextView.requestFocus(direction, 4836 previouslyFocusedRect); 4837 } else { 4838 result = super.requestFocus(direction, previouslyFocusedRect); 4839 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 4840 // For cases such as GMail, where we gain focus from a direction, 4841 // we want to move to the first available link. 4842 // FIXME: If there are no visible links, we may not want to 4843 int fakeKeyDirection = 0; 4844 switch(direction) { 4845 case View.FOCUS_UP: 4846 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 4847 break; 4848 case View.FOCUS_DOWN: 4849 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 4850 break; 4851 case View.FOCUS_LEFT: 4852 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 4853 break; 4854 case View.FOCUS_RIGHT: 4855 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 4856 break; 4857 default: 4858 return result; 4859 } 4860 if (mNativeClass != 0 && !nativeHasCursorNode()) { 4861 navHandledKey(fakeKeyDirection, 1, true, 0, true); 4862 } 4863 } 4864 } 4865 return result; 4866 } 4867 4868 @Override 4869 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4870 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 4871 4872 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 4873 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 4874 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 4875 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 4876 4877 int measuredHeight = heightSize; 4878 int measuredWidth = widthSize; 4879 4880 // Grab the content size from WebViewCore. 4881 int contentHeight = mContentHeight; 4882 int contentWidth = mContentWidth; 4883 4884// Log.d(LOGTAG, "------- measure " + heightMode); 4885 4886 if (heightMode != MeasureSpec.EXACTLY) { 4887 mHeightCanMeasure = true; 4888 measuredHeight = contentHeight; 4889 if (heightMode == MeasureSpec.AT_MOST) { 4890 // If we are larger than the AT_MOST height, then our height can 4891 // no longer be measured and we should scroll internally. 4892 if (measuredHeight > heightSize) { 4893 measuredHeight = heightSize; 4894 mHeightCanMeasure = false; 4895 } 4896 } 4897 } else { 4898 mHeightCanMeasure = false; 4899 } 4900 if (mNativeClass != 0) { 4901 nativeSetHeightCanMeasure(mHeightCanMeasure); 4902 } 4903 // For the width, always use the given size unless unspecified. 4904 if (widthMode == MeasureSpec.UNSPECIFIED) { 4905 mWidthCanMeasure = true; 4906 measuredWidth = contentWidth; 4907 } else { 4908 mWidthCanMeasure = false; 4909 } 4910 4911 synchronized (this) { 4912 setMeasuredDimension(measuredWidth, measuredHeight); 4913 } 4914 } 4915 4916 @Override 4917 public boolean requestChildRectangleOnScreen(View child, 4918 Rect rect, 4919 boolean immediate) { 4920 rect.offset(child.getLeft() - child.getScrollX(), 4921 child.getTop() - child.getScrollY()); 4922 4923 int height = getHeight() - getHorizontalScrollbarHeight(); 4924 int screenTop = mScrollY; 4925 int screenBottom = screenTop + height; 4926 4927 int scrollYDelta = 0; 4928 4929 if (rect.bottom > screenBottom) { 4930 int oneThirdOfScreenHeight = height / 3; 4931 if (rect.height() > 2 * oneThirdOfScreenHeight) { 4932 // If the rectangle is too tall to fit in the bottom two thirds 4933 // of the screen, place it at the top. 4934 scrollYDelta = rect.top - screenTop; 4935 } else { 4936 // If the rectangle will still fit on screen, we want its 4937 // top to be in the top third of the screen. 4938 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 4939 } 4940 } else if (rect.top < screenTop) { 4941 scrollYDelta = rect.top - screenTop; 4942 } 4943 4944 int width = getWidth() - getVerticalScrollbarWidth(); 4945 int screenLeft = mScrollX; 4946 int screenRight = screenLeft + width; 4947 4948 int scrollXDelta = 0; 4949 4950 if (rect.right > screenRight && rect.left > screenLeft) { 4951 if (rect.width() > width) { 4952 scrollXDelta += (rect.left - screenLeft); 4953 } else { 4954 scrollXDelta += (rect.right - screenRight); 4955 } 4956 } else if (rect.left < screenLeft) { 4957 scrollXDelta -= (screenLeft - rect.left); 4958 } 4959 4960 if ((scrollYDelta | scrollXDelta) != 0) { 4961 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 4962 } 4963 4964 return false; 4965 } 4966 4967 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 4968 String replace, int newStart, int newEnd) { 4969 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 4970 arg.mReplace = replace; 4971 arg.mNewStart = newStart; 4972 arg.mNewEnd = newEnd; 4973 mTextGeneration++; 4974 arg.mTextGeneration = mTextGeneration; 4975 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 4976 } 4977 4978 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 4979 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 4980 mWebViewCore.sendMessage(EventHub.CLICK); 4981 } 4982 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 4983 arg.mEvent = event; 4984 arg.mCurrentText = currentText; 4985 // Increase our text generation number, and pass it to webcore thread 4986 mTextGeneration++; 4987 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 4988 // WebKit's document state is not saved until about to leave the page. 4989 // To make sure the host application, like Browser, has the up to date 4990 // document state when it goes to background, we force to save the 4991 // document state. 4992 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 4993 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 4994 cursorData(), 1000); 4995 } 4996 4997 /* package */ WebViewCore getWebViewCore() { 4998 return mWebViewCore; 4999 } 5000 5001 //------------------------------------------------------------------------- 5002 // Methods can be called from a separate thread, like WebViewCore 5003 // If it needs to call the View system, it has to send message. 5004 //------------------------------------------------------------------------- 5005 5006 /** 5007 * General handler to receive message coming from webkit thread 5008 */ 5009 class PrivateHandler extends Handler { 5010 @Override 5011 public void handleMessage(Message msg) { 5012 if (DebugFlags.WEB_VIEW) { 5013 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 5014 > INVAL_RECT_MSG_ID ? Integer.toString(msg.what) 5015 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 5016 } 5017 switch (msg.what) { 5018 case REMEMBER_PASSWORD: { 5019 mDatabase.setUsernamePassword( 5020 msg.getData().getString("host"), 5021 msg.getData().getString("username"), 5022 msg.getData().getString("password")); 5023 ((Message) msg.obj).sendToTarget(); 5024 break; 5025 } 5026 case NEVER_REMEMBER_PASSWORD: { 5027 mDatabase.setUsernamePassword( 5028 msg.getData().getString("host"), null, null); 5029 ((Message) msg.obj).sendToTarget(); 5030 break; 5031 } 5032 case SWITCH_TO_SHORTPRESS: { 5033 if (mTouchMode == TOUCH_INIT_MODE) { 5034 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 5035 updateSelection(); 5036 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5037 mTouchMode = TOUCH_DONE_MODE; 5038 } 5039 break; 5040 } 5041 case SWITCH_TO_LONGPRESS: { 5042 if (!mPreventDrag) { 5043 mTouchMode = TOUCH_DONE_MODE; 5044 performLongClick(); 5045 rebuildWebTextView(); 5046 } 5047 break; 5048 } 5049 case RELEASE_SINGLE_TAP: { 5050 if (!mPreventDrag) { 5051 mTouchMode = TOUCH_DONE_MODE; 5052 doShortPress(); 5053 } 5054 break; 5055 } 5056 case SWITCH_TO_CLICK: 5057 // The user clicked with the trackball, and did not click a 5058 // second time, so perform the action of a trackball single 5059 // click 5060 mTouchMode = TOUCH_DONE_MODE; 5061 Rect visibleRect = sendOurVisibleRect(); 5062 // Note that sendOurVisibleRect calls viewToContent, so the 5063 // coordinates should be in content coordinates. 5064 if (!nativeCursorIntersects(visibleRect)) { 5065 break; 5066 } 5067 nativeSetFollowedLink(true); 5068 nativeUpdatePluginReceivesEvents(); 5069 WebViewCore.CursorData data = cursorData(); 5070 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5071 playSoundEffect(SoundEffectConstants.CLICK); 5072 boolean isTextInput = nativeCursorIsTextInput(); 5073 if (isTextInput || !mCallbackProxy.uiOverrideUrlLoading( 5074 nativeCursorText())) { 5075 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5076 nativeCursorNodePointer()); 5077 } 5078 if (isTextInput) { 5079 rebuildWebTextView(); 5080 } 5081 break; 5082 case SCROLL_BY_MSG_ID: 5083 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 5084 break; 5085 case SYNC_SCROLL_TO_MSG_ID: 5086 if (mUserScroll) { 5087 // if user has scrolled explicitly, don't sync the 5088 // scroll position any more 5089 mUserScroll = false; 5090 break; 5091 } 5092 // fall through 5093 case SCROLL_TO_MSG_ID: 5094 if (setContentScrollTo(msg.arg1, msg.arg2)) { 5095 // if we can't scroll to the exact position due to pin, 5096 // send a message to WebCore to re-scroll when we get a 5097 // new picture 5098 mUserScroll = false; 5099 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 5100 msg.arg1, msg.arg2); 5101 } 5102 break; 5103 case SPAWN_SCROLL_TO_MSG_ID: 5104 spawnContentScrollTo(msg.arg1, msg.arg2); 5105 break; 5106 case NEW_PICTURE_MSG_ID: { 5107 WebSettings settings = mWebViewCore.getSettings(); 5108 // called for new content 5109 final int viewWidth = getViewWidth(); 5110 final WebViewCore.DrawData draw = 5111 (WebViewCore.DrawData) msg.obj; 5112 final Point viewSize = draw.mViewPoint; 5113 boolean useWideViewport = settings.getUseWideViewPort(); 5114 WebViewCore.RestoreState restoreState = draw.mRestoreState; 5115 if (restoreState != null) { 5116 mInZoomOverview = false; 5117 mLastScale = restoreState.mTextWrapScale; 5118 if (restoreState.mMinScale == 0) { 5119 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 5120 mMinZoomScaleFixed = false; 5121 } else { 5122 mMinZoomScale = restoreState.mMinScale; 5123 mMinZoomScaleFixed = true; 5124 } 5125 if (restoreState.mMaxScale == 0) { 5126 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 5127 } else { 5128 mMaxZoomScale = restoreState.mMaxScale; 5129 } 5130 setNewZoomScale(mLastScale, false); 5131 setContentScrollTo(restoreState.mScrollX, 5132 restoreState.mScrollY); 5133 if (!ENABLE_DOUBLETAP_ZOOM 5134 || !settings.getLoadWithOverviewMode()) { 5135 mMobileSite = false; 5136 mViewingMode = NO_VIEWING_MODE; 5137 } else { 5138 mMobileSite = restoreState.mMobileSite; 5139 if (useWideViewport 5140 && restoreState.mViewScale == 0) { 5141 mViewingMode = OVERVIEW_MODE; 5142 mInZoomOverview = true; 5143 } else if (mMobileSite 5144 && (mScrollX | mScrollY) == 0) { 5145 mViewingMode = TITLE_BAR_DISMISS_MODE; 5146 } else { 5147 mViewingMode = READING_MODE_WITH_TITLE_BAR; 5148 } 5149 } 5150 mCallbackProxy.uiOnChangeViewingMode(mViewingMode); 5151 // As we are on a new page, remove the WebTextView. This 5152 // is necessary for page loads driven by webkit, and in 5153 // particular when the user was on a password field, so 5154 // the WebTextView was visible. 5155 clearTextEntry(); 5156 } 5157 // We update the layout (i.e. request a layout from the 5158 // view system) if the last view size that we sent to 5159 // WebCore matches the view size of the picture we just 5160 // received in the fixed dimension. 5161 final boolean updateLayout = viewSize.x == mLastWidthSent 5162 && viewSize.y == mLastHeightSent; 5163 recordNewContentSize(draw.mWidthHeight.x, 5164 draw.mWidthHeight.y, updateLayout); 5165 if (DebugFlags.WEB_VIEW) { 5166 Rect b = draw.mInvalRegion.getBounds(); 5167 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5168 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5169 } 5170 invalidate(contentToView(draw.mInvalRegion.getBounds())); 5171 if (mPictureListener != null) { 5172 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5173 } 5174 if (useWideViewport) { 5175 mZoomOverviewWidth = Math.max(draw.mMinPrefWidth, 5176 draw.mViewPoint.x); 5177 } 5178 if (!mMinZoomScaleFixed) { 5179 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5180 } 5181 if (!mDrawHistory && mInZoomOverview) { 5182 // fit the content width to the current view. Ignore 5183 // the rounding error case. 5184 if (Math.abs((viewWidth * mInvActualScale) 5185 - mZoomOverviewWidth) > 1) { 5186 setNewZoomScale((float) viewWidth 5187 / mZoomOverviewWidth, false); 5188 } 5189 } 5190 break; 5191 } 5192 case WEBCORE_INITIALIZED_MSG_ID: 5193 // nativeCreate sets mNativeClass to a non-zero value 5194 nativeCreate(msg.arg1); 5195 break; 5196 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5197 // Make sure that the textfield is currently focused 5198 // and representing the same node as the pointer. 5199 if (inEditingMode() && 5200 mWebTextView.isSameTextField(msg.arg1)) { 5201 if (msg.getData().getBoolean("password")) { 5202 Spannable text = (Spannable) mWebTextView.getText(); 5203 int start = Selection.getSelectionStart(text); 5204 int end = Selection.getSelectionEnd(text); 5205 mWebTextView.setInPassword(true); 5206 // Restore the selection, which may have been 5207 // ruined by setInPassword. 5208 Spannable pword = 5209 (Spannable) mWebTextView.getText(); 5210 Selection.setSelection(pword, start, end); 5211 // If the text entry has created more events, ignore 5212 // this one. 5213 } else if (msg.arg2 == mTextGeneration) { 5214 mWebTextView.setTextAndKeepSelection( 5215 (String) msg.obj); 5216 } 5217 } 5218 break; 5219 case UPDATE_TEXT_SELECTION_MSG_ID: 5220 if (inEditingMode() 5221 && mWebTextView.isSameTextField(msg.arg1) 5222 && msg.arg2 == mTextGeneration) { 5223 WebViewCore.TextSelectionData tData 5224 = (WebViewCore.TextSelectionData) msg.obj; 5225 mWebTextView.setSelectionFromWebKit(tData.mStart, 5226 tData.mEnd); 5227 } 5228 break; 5229 case MOVE_OUT_OF_PLUGIN: 5230 if (nativePluginEatsNavKey()) { 5231 navHandledKey(msg.arg1, 1, false, 0, true); 5232 } 5233 break; 5234 case UPDATE_TEXT_ENTRY_MSG_ID: 5235 // this is sent after finishing resize in WebViewCore. Make 5236 // sure the text edit box is still on the screen. 5237 if (inEditingMode() && nativeCursorIsTextInput()) { 5238 mWebTextView.bringIntoView(); 5239 rebuildWebTextView(); 5240 } 5241 break; 5242 case CLEAR_TEXT_ENTRY: 5243 clearTextEntry(); 5244 break; 5245 case INVAL_RECT_MSG_ID: { 5246 Rect r = (Rect)msg.obj; 5247 if (r == null) { 5248 invalidate(); 5249 } else { 5250 // we need to scale r from content into view coords, 5251 // which viewInvalidate() does for us 5252 viewInvalidate(r.left, r.top, r.right, r.bottom); 5253 } 5254 break; 5255 } 5256 case REQUEST_FORM_DATA: 5257 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5258 if (mWebTextView.isSameTextField(msg.arg1)) { 5259 mWebTextView.setAdapterCustom(adapter); 5260 } 5261 break; 5262 case UPDATE_CLIPBOARD: 5263 String str = (String) msg.obj; 5264 if (DebugFlags.WEB_VIEW) { 5265 Log.v(LOGTAG, "UPDATE_CLIPBOARD " + str); 5266 } 5267 try { 5268 IClipboard clip = IClipboard.Stub.asInterface( 5269 ServiceManager.getService("clipboard")); 5270 clip.setClipboardText(str); 5271 } catch (android.os.RemoteException e) { 5272 Log.e(LOGTAG, "Clipboard failed", e); 5273 } 5274 break; 5275 case RESUME_WEBCORE_UPDATE: 5276 WebViewCore.resumeUpdate(mWebViewCore); 5277 break; 5278 5279 case LONG_PRESS_CENTER: 5280 // as this is shared by keydown and trackballdown, reset all 5281 // the states 5282 mGotCenterDown = false; 5283 mTrackballDown = false; 5284 // LONG_PRESS_CENTER is sent as a delayed message. If we 5285 // switch to windows overview, the WebView will be 5286 // temporarily removed from the view system. In that case, 5287 // do nothing. 5288 if (getParent() != null) { 5289 performLongClick(); 5290 } 5291 break; 5292 5293 case WEBCORE_NEED_TOUCH_EVENTS: 5294 mForwardTouchEvents = (msg.arg1 != 0); 5295 break; 5296 5297 case PREVENT_TOUCH_ID: 5298 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5299 mPreventDrag = msg.arg2 == 1; 5300 if (mPreventDrag) { 5301 mTouchMode = TOUCH_DONE_MODE; 5302 } 5303 } 5304 break; 5305 5306 case REQUEST_KEYBOARD: 5307 if (msg.arg1 == 0) { 5308 hideSoftKeyboard(); 5309 } else { 5310 displaySoftKeyboard(false); 5311 } 5312 break; 5313 5314 default: 5315 super.handleMessage(msg); 5316 break; 5317 } 5318 } 5319 } 5320 5321 // Class used to use a dropdown for a <select> element 5322 private class InvokeListBox implements Runnable { 5323 // Whether the listbox allows multiple selection. 5324 private boolean mMultiple; 5325 // Passed in to a list with multiple selection to tell 5326 // which items are selected. 5327 private int[] mSelectedArray; 5328 // Passed in to a list with single selection to tell 5329 // where the initial selection is. 5330 private int mSelection; 5331 5332 private Container[] mContainers; 5333 5334 // Need these to provide stable ids to my ArrayAdapter, 5335 // which normally does not have stable ids. (Bug 1250098) 5336 private class Container extends Object { 5337 String mString; 5338 boolean mEnabled; 5339 int mId; 5340 5341 public String toString() { 5342 return mString; 5343 } 5344 } 5345 5346 /** 5347 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 5348 * and allow filtering. 5349 */ 5350 private class MyArrayListAdapter extends ArrayAdapter<Container> { 5351 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 5352 super(context, 5353 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 5354 com.android.internal.R.layout.select_dialog_singlechoice, 5355 objects); 5356 } 5357 5358 @Override 5359 public boolean hasStableIds() { 5360 // AdapterView's onChanged method uses this to determine whether 5361 // to restore the old state. Return false so that the old (out 5362 // of date) state does not replace the new, valid state. 5363 return false; 5364 } 5365 5366 private Container item(int position) { 5367 if (position < 0 || position >= getCount()) { 5368 return null; 5369 } 5370 return (Container) getItem(position); 5371 } 5372 5373 @Override 5374 public long getItemId(int position) { 5375 Container item = item(position); 5376 if (item == null) { 5377 return -1; 5378 } 5379 return item.mId; 5380 } 5381 5382 @Override 5383 public boolean areAllItemsEnabled() { 5384 return false; 5385 } 5386 5387 @Override 5388 public boolean isEnabled(int position) { 5389 Container item = item(position); 5390 if (item == null) { 5391 return false; 5392 } 5393 return item.mEnabled; 5394 } 5395 } 5396 5397 private InvokeListBox(String[] array, 5398 boolean[] enabled, int[] selected) { 5399 mMultiple = true; 5400 mSelectedArray = selected; 5401 5402 int length = array.length; 5403 mContainers = new Container[length]; 5404 for (int i = 0; i < length; i++) { 5405 mContainers[i] = new Container(); 5406 mContainers[i].mString = array[i]; 5407 mContainers[i].mEnabled = enabled[i]; 5408 mContainers[i].mId = i; 5409 } 5410 } 5411 5412 private InvokeListBox(String[] array, boolean[] enabled, int 5413 selection) { 5414 mSelection = selection; 5415 mMultiple = false; 5416 5417 int length = array.length; 5418 mContainers = new Container[length]; 5419 for (int i = 0; i < length; i++) { 5420 mContainers[i] = new Container(); 5421 mContainers[i].mString = array[i]; 5422 mContainers[i].mEnabled = enabled[i]; 5423 mContainers[i].mId = i; 5424 } 5425 } 5426 5427 /* 5428 * Whenever the data set changes due to filtering, this class ensures 5429 * that the checked item remains checked. 5430 */ 5431 private class SingleDataSetObserver extends DataSetObserver { 5432 private long mCheckedId; 5433 private ListView mListView; 5434 private Adapter mAdapter; 5435 5436 /* 5437 * Create a new observer. 5438 * @param id The ID of the item to keep checked. 5439 * @param l ListView for getting and clearing the checked states 5440 * @param a Adapter for getting the IDs 5441 */ 5442 public SingleDataSetObserver(long id, ListView l, Adapter a) { 5443 mCheckedId = id; 5444 mListView = l; 5445 mAdapter = a; 5446 } 5447 5448 public void onChanged() { 5449 // The filter may have changed which item is checked. Find the 5450 // item that the ListView thinks is checked. 5451 int position = mListView.getCheckedItemPosition(); 5452 long id = mAdapter.getItemId(position); 5453 if (mCheckedId != id) { 5454 // Clear the ListView's idea of the checked item, since 5455 // it is incorrect 5456 mListView.clearChoices(); 5457 // Search for mCheckedId. If it is in the filtered list, 5458 // mark it as checked 5459 int count = mAdapter.getCount(); 5460 for (int i = 0; i < count; i++) { 5461 if (mAdapter.getItemId(i) == mCheckedId) { 5462 mListView.setItemChecked(i, true); 5463 break; 5464 } 5465 } 5466 } 5467 } 5468 5469 public void onInvalidate() {} 5470 } 5471 5472 public void run() { 5473 final ListView listView = (ListView) LayoutInflater.from(mContext) 5474 .inflate(com.android.internal.R.layout.select_dialog, null); 5475 final MyArrayListAdapter adapter = new 5476 MyArrayListAdapter(mContext, mContainers, mMultiple); 5477 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 5478 .setView(listView).setCancelable(true) 5479 .setInverseBackgroundForced(true); 5480 5481 if (mMultiple) { 5482 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 5483 public void onClick(DialogInterface dialog, int which) { 5484 mWebViewCore.sendMessage( 5485 EventHub.LISTBOX_CHOICES, 5486 adapter.getCount(), 0, 5487 listView.getCheckedItemPositions()); 5488 }}); 5489 b.setNegativeButton(android.R.string.cancel, 5490 new DialogInterface.OnClickListener() { 5491 public void onClick(DialogInterface dialog, int which) { 5492 mWebViewCore.sendMessage( 5493 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5494 }}); 5495 } 5496 final AlertDialog dialog = b.create(); 5497 listView.setAdapter(adapter); 5498 listView.setFocusableInTouchMode(true); 5499 // There is a bug (1250103) where the checks in a ListView with 5500 // multiple items selected are associated with the positions, not 5501 // the ids, so the items do not properly retain their checks when 5502 // filtered. Do not allow filtering on multiple lists until 5503 // that bug is fixed. 5504 5505 listView.setTextFilterEnabled(!mMultiple); 5506 if (mMultiple) { 5507 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 5508 int length = mSelectedArray.length; 5509 for (int i = 0; i < length; i++) { 5510 listView.setItemChecked(mSelectedArray[i], true); 5511 } 5512 } else { 5513 listView.setOnItemClickListener(new OnItemClickListener() { 5514 public void onItemClick(AdapterView parent, View v, 5515 int position, long id) { 5516 mWebViewCore.sendMessage( 5517 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 5518 dialog.dismiss(); 5519 } 5520 }); 5521 if (mSelection != -1) { 5522 listView.setSelection(mSelection); 5523 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 5524 listView.setItemChecked(mSelection, true); 5525 DataSetObserver observer = new SingleDataSetObserver( 5526 adapter.getItemId(mSelection), listView, adapter); 5527 adapter.registerDataSetObserver(observer); 5528 } 5529 } 5530 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 5531 public void onCancel(DialogInterface dialog) { 5532 mWebViewCore.sendMessage( 5533 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5534 } 5535 }); 5536 dialog.show(); 5537 } 5538 } 5539 5540 /* 5541 * Request a dropdown menu for a listbox with multiple selection. 5542 * 5543 * @param array Labels for the listbox. 5544 * @param enabledArray Which positions are enabled. 5545 * @param selectedArray Which positions are initally selected. 5546 */ 5547 void requestListBox(String[] array, boolean[]enabledArray, int[] 5548 selectedArray) { 5549 mPrivateHandler.post( 5550 new InvokeListBox(array, enabledArray, selectedArray)); 5551 } 5552 5553 /* 5554 * Request a dropdown menu for a listbox with single selection or a single 5555 * <select> element. 5556 * 5557 * @param array Labels for the listbox. 5558 * @param enabledArray Which positions are enabled. 5559 * @param selection Which position is initally selected. 5560 */ 5561 void requestListBox(String[] array, boolean[]enabledArray, int selection) { 5562 mPrivateHandler.post( 5563 new InvokeListBox(array, enabledArray, selection)); 5564 } 5565 5566 // called by JNI 5567 private void sendMoveMouse(int frame, int node, int x, int y) { 5568 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 5569 new WebViewCore.CursorData(frame, node, x, y)); 5570 } 5571 5572 /* 5573 * Send a mouse move event to the webcore thread. 5574 * 5575 * @param removeFocus Pass true if the "mouse" cursor is now over a node 5576 * which wants key events, but it is not the focus. This 5577 * will make the visual appear as though nothing is in 5578 * focus. Remove the WebTextView, if present, and stop 5579 * drawing the blinking caret. 5580 * called by JNI 5581 */ 5582 private void sendMoveMouseIfLatest(boolean removeFocus) { 5583 if (removeFocus) { 5584 clearTextEntry(); 5585 setFocusControllerInactive(); 5586 } 5587 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 5588 cursorData()); 5589 } 5590 5591 // called by JNI 5592 private void sendMotionUp(int touchGeneration, 5593 int frame, int node, int x, int y) { 5594 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5595 touchUpData.mMoveGeneration = touchGeneration; 5596 touchUpData.mFrame = frame; 5597 touchUpData.mNode = node; 5598 touchUpData.mX = x; 5599 touchUpData.mY = y; 5600 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5601 } 5602 5603 5604 private int getScaledMaxXScroll() { 5605 int width; 5606 if (mHeightCanMeasure == false) { 5607 width = getViewWidth() / 4; 5608 } else { 5609 Rect visRect = new Rect(); 5610 calcOurVisibleRect(visRect); 5611 width = visRect.width() / 2; 5612 } 5613 // FIXME the divisor should be retrieved from somewhere 5614 return viewToContent(width); 5615 } 5616 5617 private int getScaledMaxYScroll() { 5618 int height; 5619 if (mHeightCanMeasure == false) { 5620 height = getViewHeight() / 4; 5621 } else { 5622 Rect visRect = new Rect(); 5623 calcOurVisibleRect(visRect); 5624 height = visRect.height() / 2; 5625 } 5626 // FIXME the divisor should be retrieved from somewhere 5627 // the closest thing today is hard-coded into ScrollView.java 5628 // (from ScrollView.java, line 363) int maxJump = height/2; 5629 return viewToContent(height); 5630 } 5631 5632 /** 5633 * Called by JNI to invalidate view 5634 */ 5635 private void viewInvalidate() { 5636 invalidate(); 5637 } 5638 5639 // return true if the key was handled 5640 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 5641 long time, boolean ignorePlugin) { 5642 if (mNativeClass == 0) { 5643 return false; 5644 } 5645 if (ignorePlugin == false && nativePluginEatsNavKey()) { 5646 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 5647 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 5648 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 5649 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 5650 , 0, 0, 0); 5651 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5652 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5653 return true; 5654 } 5655 mLastCursorTime = time; 5656 mLastCursorBounds = nativeGetCursorRingBounds(); 5657 boolean keyHandled 5658 = nativeMoveCursor(keyCode, count, noScroll) == false; 5659 if (DebugFlags.WEB_VIEW) { 5660 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 5661 + " mLastCursorTime=" + mLastCursorTime 5662 + " handled=" + keyHandled); 5663 } 5664 if (keyHandled == false || mHeightCanMeasure == false) { 5665 return keyHandled; 5666 } 5667 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 5668 if (contentCursorRingBounds.isEmpty()) return keyHandled; 5669 Rect viewCursorRingBounds = contentToView(contentCursorRingBounds); 5670 Rect visRect = new Rect(); 5671 calcOurVisibleRect(visRect); 5672 Rect outset = new Rect(visRect); 5673 int maxXScroll = visRect.width() / 2; 5674 int maxYScroll = visRect.height() / 2; 5675 outset.inset(-maxXScroll, -maxYScroll); 5676 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 5677 return keyHandled; 5678 } 5679 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 5680 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 5681 maxXScroll); 5682 if (maxH > 0) { 5683 pinScrollBy(maxH, 0, true, 0); 5684 } else { 5685 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 5686 -maxXScroll); 5687 if (maxH < 0) { 5688 pinScrollBy(maxH, 0, true, 0); 5689 } 5690 } 5691 if (mLastCursorBounds.isEmpty()) return keyHandled; 5692 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 5693 return keyHandled; 5694 } 5695 if (DebugFlags.WEB_VIEW) { 5696 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 5697 + contentCursorRingBounds); 5698 } 5699 requestRectangleOnScreen(viewCursorRingBounds); 5700 mUserScroll = true; 5701 return keyHandled; 5702 } 5703 5704 /** 5705 * Set the background color. It's white by default. Pass 5706 * zero to make the view transparent. 5707 * @param color the ARGB color described by Color.java 5708 */ 5709 public void setBackgroundColor(int color) { 5710 mBackgroundColor = color; 5711 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 5712 } 5713 5714 public void debugDump() { 5715 nativeDebugDump(); 5716 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 5717 } 5718 5719 /** 5720 * Update our cache with updatedText. 5721 * @param updatedText The new text to put in our cache. 5722 */ 5723 /* package */ void updateCachedTextfield(String updatedText) { 5724 // Also place our generation number so that when we look at the cache 5725 // we recognize that it is up to date. 5726 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 5727 } 5728 5729 /* package */ native void nativeClearCursor(); 5730 private native void nativeCreate(int ptr); 5731 private native int nativeCursorFramePointer(); 5732 private native Rect nativeCursorNodeBounds(); 5733 /* package */ native int nativeCursorNodePointer(); 5734 /* package */ native boolean nativeCursorMatchesFocus(); 5735 private native boolean nativeCursorIntersects(Rect visibleRect); 5736 private native boolean nativeCursorIsAnchor(); 5737 private native boolean nativeCursorIsPlugin(); 5738 private native boolean nativeCursorIsTextInput(); 5739 private native Point nativeCursorPosition(); 5740 private native String nativeCursorText(); 5741 /** 5742 * Returns true if the native cursor node says it wants to handle key events 5743 * (ala plugins). This can only be called if mNativeClass is non-zero! 5744 */ 5745 private native boolean nativeCursorWantsKeyEvents(); 5746 private native void nativeDebugDump(); 5747 private native void nativeDestroy(); 5748 private native void nativeDrawCursorRing(Canvas content); 5749 private native void nativeDrawMatches(Canvas canvas); 5750 private native void nativeDrawSelection(Canvas content 5751 , int x, int y, boolean extendSelection); 5752 private native void nativeDrawSelectionRegion(Canvas content); 5753 private native void nativeDumpDisplayTree(String urlOrNull); 5754 private native int nativeFindAll(String findLower, String findUpper); 5755 private native void nativeFindNext(boolean forward); 5756 private native boolean nativeFocusCandidateIsPassword(); 5757 private native boolean nativeFocusCandidateIsRtlText(); 5758 private native boolean nativeFocusCandidateIsTextField(); 5759 private native boolean nativeFocusCandidateIsTextInput(); 5760 private native int nativeFocusCandidateMaxLength(); 5761 /* package */ native String nativeFocusCandidateName(); 5762 private native Rect nativeFocusCandidateNodeBounds(); 5763 /* package */ native int nativeFocusCandidatePointer(); 5764 private native String nativeFocusCandidateText(); 5765 private native int nativeFocusCandidateTextSize(); 5766 /* package */ native int nativeFocusNodePointer(); 5767 private native Rect nativeGetCursorRingBounds(); 5768 private native Region nativeGetSelection(); 5769 private native boolean nativeHasCursorNode(); 5770 private native boolean nativeHasFocusNode(); 5771 private native void nativeHideCursor(); 5772 private native String nativeImageURI(int x, int y); 5773 private native void nativeInstrumentReport(); 5774 /* package */ native void nativeMoveCursorToNextTextInput(); 5775 // return true if the page has been scrolled 5776 private native boolean nativeMotionUp(int x, int y, int slop); 5777 // returns false if it handled the key 5778 private native boolean nativeMoveCursor(int keyCode, int count, 5779 boolean noScroll); 5780 private native int nativeMoveGeneration(); 5781 private native void nativeMoveSelection(int x, int y, 5782 boolean extendSelection); 5783 private native boolean nativePluginEatsNavKey(); 5784 // Like many other of our native methods, you must make sure that 5785 // mNativeClass is not null before calling this method. 5786 private native void nativeRecordButtons(boolean focused, 5787 boolean pressed, boolean invalidate); 5788 private native void nativeSelectBestAt(Rect rect); 5789 private native void nativeSetFindIsDown(); 5790 private native void nativeSetFollowedLink(boolean followed); 5791 private native void nativeSetHeightCanMeasure(boolean measure); 5792 // Returns a value corresponding to CachedFrame::ImeAction 5793 /* package */ native int nativeTextFieldAction(); 5794 /** 5795 * Perform a click on a currently focused text input. Since it is already 5796 * focused, there is no need to go through the nativeMotionUp code, which 5797 * may change the Cursor. 5798 */ 5799 private native void nativeTextInputMotionUp(int x, int y); 5800 private native int nativeTextGeneration(); 5801 // Never call this version except by updateCachedTextfield(String) - 5802 // we always want to pass in our generation number. 5803 private native void nativeUpdateCachedTextfield(String updatedText, 5804 int generation); 5805 private native void nativeUpdatePluginReceivesEvents(); 5806 // return NO_LEFTEDGE means failure. 5807 private static final int NO_LEFTEDGE = -1; 5808 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 5809} 5810