WebView.java revision 4950b2b6951bbdc2b0023130bfbaca2a4044044f
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; 84import java.util.Map; 85 86/** 87 * <p>A View that displays web pages. This class is the basis upon which you 88 * can roll your own web browser or simply display some online content within your Activity. 89 * It uses the WebKit rendering engine to display 90 * web pages and includes methods to navigate forward and backward 91 * through a history, zoom in and out, perform text searches and more.</p> 92 * <p>To enable the built-in zoom, set 93 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 94 * (introduced in API version 3). 95 * <p>Note that, in order for your Activity to access the Internet and load web pages 96 * in a WebView, you must add the <var>INTERNET</var> permissions to your 97 * Android Manifest file:</p> 98 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 99 * 100 * <p>This must be a child of the <code><manifest></code> element.</p> 101 * 102 * <h3>Basic usage</h3> 103 * 104 * <p>By default, a WebView provides no browser-like widgets, does not 105 * enable JavaScript and errors will be ignored. If your goal is only 106 * to display some HTML as a part of your UI, this is probably fine; 107 * the user won't need to interact with the web page beyond reading 108 * it, and the web page won't need to interact with the user. If you 109 * actually want a fully blown web browser, then you probably want to 110 * invoke the Browser application with your URL rather than show it 111 * with a WebView. See {@link android.content.Intent} for more information.</p> 112 * 113 * <pre class="prettyprint"> 114 * WebView webview = new WebView(this); 115 * setContentView(webview); 116 * 117 * // Simplest usage: note that an exception will NOT be thrown 118 * // if there is an error loading this page (see below). 119 * webview.loadUrl("http://slashdot.org/"); 120 * 121 * // Of course you can also load from any string: 122 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 123 * webview.loadData(summary, "text/html", "utf-8"); 124 * // ... although note that there are restrictions on what this HTML can do. 125 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 126 * </pre> 127 * 128 * <p>A WebView has several customization points where you can add your 129 * own behavior. These are:</p> 130 * 131 * <ul> 132 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 133 * This class is called when something that might impact a 134 * browser UI happens, for instance, progress updates and 135 * JavaScript alerts are sent here. 136 * </li> 137 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 138 * It will be called when things happen that impact the 139 * rendering of the content, eg, errors or form submissions. You 140 * can also intercept URL loading here.</li> 141 * <li>Via the {@link android.webkit.WebSettings} class, which contains 142 * miscellaneous configuration. </li> 143 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 144 * This lets you bind Java objects into the WebView so they can be 145 * controlled from the web pages JavaScript.</li> 146 * </ul> 147 * 148 * <p>Here's a more complicated example, showing error handling, 149 * settings, and progress notification:</p> 150 * 151 * <pre class="prettyprint"> 152 * // Let's display the progress in the activity title bar, like the 153 * // browser app does. 154 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 155 * 156 * webview.getSettings().setJavaScriptEnabled(true); 157 * 158 * final Activity activity = this; 159 * webview.setWebChromeClient(new WebChromeClient() { 160 * public void onProgressChanged(WebView view, int progress) { 161 * // Activities and WebViews measure progress with different scales. 162 * // The progress meter will automatically disappear when we reach 100% 163 * activity.setProgress(progress * 1000); 164 * } 165 * }); 166 * webview.setWebViewClient(new WebViewClient() { 167 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 168 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 169 * } 170 * }); 171 * 172 * webview.loadUrl("http://slashdot.org/"); 173 * </pre> 174 * 175 * <h3>Cookie and window management</h3> 176 * 177 * <p>For obvious security reasons, your application has its own 178 * cache, cookie store etc - it does not share the Browser 179 * applications data. Cookies are managed on a separate thread, so 180 * operations like index building don't block the UI 181 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 182 * if you want to use cookies in your application. 183 * </p> 184 * 185 * <p>By default, requests by the HTML to open new windows are 186 * ignored. This is true whether they be opened by JavaScript or by 187 * the target attribute on a link. You can customize your 188 * WebChromeClient to provide your own behaviour for opening multiple windows, 189 * and render them in whatever manner you want.</p> 190 * 191 * <p>Standard behavior for an Activity is to be destroyed and 192 * recreated when the devices orientation is changed. This will cause 193 * the WebView to reload the current page. If you don't want that, you 194 * can set your Activity to handle the orientation and keyboardHidden 195 * changes, and then just leave the WebView alone. It'll automatically 196 * re-orient itself as appropriate.</p> 197 */ 198public class WebView extends AbsoluteLayout 199 implements ViewTreeObserver.OnGlobalFocusChangeListener, 200 ViewGroup.OnHierarchyChangeListener { 201 202 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 203 // the screen all-the-time. Good for profiling our drawing code 204 static private final boolean AUTO_REDRAW_HACK = false; 205 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 206 private boolean mAutoRedraw; 207 208 static final String LOGTAG = "webview"; 209 210 private static class ExtendedZoomControls extends FrameLayout { 211 public ExtendedZoomControls(Context context, AttributeSet attrs) { 212 super(context, attrs); 213 LayoutInflater inflater = (LayoutInflater) 214 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 215 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 216 mPlusMinusZoomControls = (ZoomControls) findViewById( 217 com.android.internal.R.id.zoomControls); 218 mZoomMagnify = (ImageView) findViewById(com.android.internal.R.id.zoomMagnify); 219 } 220 221 public void show(boolean showZoom, boolean canZoomOut) { 222 mPlusMinusZoomControls.setVisibility( 223 showZoom ? View.VISIBLE : View.GONE); 224 mZoomMagnify.setVisibility(canZoomOut ? View.VISIBLE : View.GONE); 225 fade(View.VISIBLE, 0.0f, 1.0f); 226 } 227 228 public void hide() { 229 fade(View.GONE, 1.0f, 0.0f); 230 } 231 232 private void fade(int visibility, float startAlpha, float endAlpha) { 233 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 234 anim.setDuration(500); 235 startAnimation(anim); 236 setVisibility(visibility); 237 } 238 239 public void setIsZoomMagnifyEnabled(boolean isEnabled) { 240 mZoomMagnify.setEnabled(isEnabled); 241 } 242 243 public boolean hasFocus() { 244 return mPlusMinusZoomControls.hasFocus() || mZoomMagnify.hasFocus(); 245 } 246 247 public void setOnZoomInClickListener(OnClickListener listener) { 248 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 249 } 250 251 public void setOnZoomOutClickListener(OnClickListener listener) { 252 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 253 } 254 255 public void setOnZoomMagnifyClickListener(OnClickListener listener) { 256 mZoomMagnify.setOnClickListener(listener); 257 } 258 259 ZoomControls mPlusMinusZoomControls; 260 ImageView mZoomMagnify; 261 } 262 263 /** 264 * Transportation object for returning WebView across thread boundaries. 265 */ 266 public class WebViewTransport { 267 private WebView mWebview; 268 269 /** 270 * Set the WebView to the transportation object. 271 * @param webview The WebView to transport. 272 */ 273 public synchronized void setWebView(WebView webview) { 274 mWebview = webview; 275 } 276 277 /** 278 * Return the WebView object. 279 * @return WebView The transported WebView object. 280 */ 281 public synchronized WebView getWebView() { 282 return mWebview; 283 } 284 } 285 286 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 287 private final CallbackProxy mCallbackProxy; 288 289 private final WebViewDatabase mDatabase; 290 291 // SSL certificate for the main top-level page (if secure) 292 private SslCertificate mCertificate; 293 294 // Native WebView pointer that is 0 until the native object has been 295 // created. 296 private int mNativeClass; 297 // This would be final but it needs to be set to null when the WebView is 298 // destroyed. 299 private WebViewCore mWebViewCore; 300 // Handler for dispatching UI messages. 301 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 302 private WebTextView mWebTextView; 303 // Used to ignore changes to webkit text that arrives to the UI side after 304 // more key events. 305 private int mTextGeneration; 306 307 // Used by WebViewCore to create child views. 308 /* package */ final ViewManager mViewManager; 309 310 /** 311 * Position of the last touch event. 312 */ 313 private float mLastTouchX; 314 private float mLastTouchY; 315 316 /** 317 * Time of the last touch event. 318 */ 319 private long mLastTouchTime; 320 321 /** 322 * Time of the last time sending touch event to WebViewCore 323 */ 324 private long mLastSentTouchTime; 325 326 /** 327 * The minimum elapsed time before sending another ACTION_MOVE event to 328 * WebViewCore. This really should be tuned for each type of the devices. 329 * For example in Google Map api test case, it takes Dream device at least 330 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 331 * triggering the layout and drawing the picture. While the same process 332 * takes 60+ms on the current high speed device. If we make 333 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 334 * to WebViewCore queue and the real layout and draw events will be pushed 335 * to further, which slows down the refresh rate. Choose 50 to favor the 336 * current high speed devices. For Dream like devices, 100 is a better 337 * choice. Maybe make this in the buildspec later. 338 */ 339 private static final int TOUCH_SENT_INTERVAL = 50; 340 341 /** 342 * Helper class to get velocity for fling 343 */ 344 VelocityTracker mVelocityTracker; 345 private int mMaximumFling; 346 private float mLastVelocity; 347 private float mLastVelX; 348 private float mLastVelY; 349 350 // use this flag to control whether enabling the new double tap zoom 351 static final boolean ENABLE_DOUBLETAP_ZOOM = true; 352 353 /** 354 * Touch mode 355 */ 356 private int mTouchMode = TOUCH_DONE_MODE; 357 private static final int TOUCH_INIT_MODE = 1; 358 private static final int TOUCH_DRAG_START_MODE = 2; 359 private static final int TOUCH_DRAG_MODE = 3; 360 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 361 private static final int TOUCH_SHORTPRESS_MODE = 5; 362 private static final int TOUCH_DOUBLECLICK_MODE = 6; 363 private static final int TOUCH_DONE_MODE = 7; 364 private static final int TOUCH_SELECT_MODE = 8; 365 // touch mode values specific to scale+scroll 366 private static final int FIRST_SCROLL_ZOOM = 9; 367 private static final int SCROLL_ZOOM_ANIMATION_IN = 9; 368 private static final int SCROLL_ZOOM_ANIMATION_OUT = 10; 369 private static final int SCROLL_ZOOM_OUT = 11; 370 private static final int LAST_SCROLL_ZOOM = 11; 371 // end of touch mode values specific to scale+scroll 372 private static final int TOUCH_DOUBLE_TAP_MODE = 12; 373 374 // Whether to forward the touch events to WebCore 375 private boolean mForwardTouchEvents = false; 376 377 // Whether to prevent drag during touch. The initial value depends on 378 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 379 // take control of touch events unless it says no for touch down event. 380 private boolean mPreventDrag; 381 382 // To keep track of whether the current drag was initiated by a WebTextView, 383 // so that we know not to hide the cursor 384 boolean mDragFromTextInput; 385 386 // Whether or not to draw the cursor ring. 387 private boolean mDrawCursorRing = true; 388 389 // true if onPause has been called (and not onResume) 390 private boolean mIsPaused; 391 392 /** 393 * Customizable constant 394 */ 395 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 396 private int mTouchSlopSquare; 397 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 398 private int mDoubleTapSlopSquare; 399 // pre-computed density adjusted navigation slop 400 private int mNavSlop; 401 // This should be ViewConfiguration.getTapTimeout() 402 // But system time out is 100ms, which is too short for the browser. 403 // In the browser, if it switches out of tap too soon, jump tap won't work. 404 private static final int TAP_TIMEOUT = 200; 405 // This should be ViewConfiguration.getLongPressTimeout() 406 // But system time out is 500ms, which is too short for the browser. 407 // With a short timeout, it's difficult to treat trigger a short press. 408 private static final int LONG_PRESS_TIMEOUT = 1000; 409 // needed to avoid flinging after a pause of no movement 410 private static final int MIN_FLING_TIME = 250; 411 // The time that the Zoom Controls are visible before fading away 412 private static final long ZOOM_CONTROLS_TIMEOUT = 413 ViewConfiguration.getZoomControlsTimeout(); 414 // The amount of content to overlap between two screens when going through 415 // pages with the space bar, in pixels. 416 private static final int PAGE_SCROLL_OVERLAP = 24; 417 418 /** 419 * These prevent calling requestLayout if either dimension is fixed. This 420 * depends on the layout parameters and the measure specs. 421 */ 422 boolean mWidthCanMeasure; 423 boolean mHeightCanMeasure; 424 425 // Remember the last dimensions we sent to the native side so we can avoid 426 // sending the same dimensions more than once. 427 int mLastWidthSent; 428 int mLastHeightSent; 429 430 private int mContentWidth; // cache of value from WebViewCore 431 private int mContentHeight; // cache of value from WebViewCore 432 433 // Need to have the separate control for horizontal and vertical scrollbar 434 // style than the View's single scrollbar style 435 private boolean mOverlayHorizontalScrollbar = true; 436 private boolean mOverlayVerticalScrollbar = false; 437 438 // our standard speed. this way small distances will be traversed in less 439 // time than large distances, but we cap the duration, so that very large 440 // distances won't take too long to get there. 441 private static final int STD_SPEED = 480; // pixels per second 442 // time for the longest scroll animation 443 private static final int MAX_DURATION = 750; // milliseconds 444 private Scroller mScroller; 445 446 private boolean mWrapContent; 447 448 /** 449 * Private message ids 450 */ 451 private static final int REMEMBER_PASSWORD = 1; 452 private static final int NEVER_REMEMBER_PASSWORD = 2; 453 private static final int SWITCH_TO_SHORTPRESS = 3; 454 private static final int SWITCH_TO_LONGPRESS = 4; 455 private static final int RELEASE_SINGLE_TAP = 5; 456 private static final int REQUEST_FORM_DATA = 6; 457 private static final int SWITCH_TO_CLICK = 7; 458 private static final int RESUME_WEBCORE_UPDATE = 8; 459 460 //! arg1=x, arg2=y 461 static final int SCROLL_TO_MSG_ID = 10; 462 static final int SCROLL_BY_MSG_ID = 11; 463 //! arg1=x, arg2=y 464 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 465 //! arg1=x, arg2=y 466 static final int SYNC_SCROLL_TO_MSG_ID = 13; 467 static final int NEW_PICTURE_MSG_ID = 14; 468 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 469 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 470 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 471 static final int MOVE_OUT_OF_PLUGIN = 19; 472 static final int CLEAR_TEXT_ENTRY = 20; 473 static final int UPDATE_TEXT_SELECTION_MSG_ID = 21; 474 static final int UPDATE_CLIPBOARD = 22; 475 static final int LONG_PRESS_CENTER = 23; 476 static final int PREVENT_TOUCH_ID = 24; 477 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 478 // obj=Rect in doc coordinates 479 static final int INVAL_RECT_MSG_ID = 26; 480 static final int REQUEST_KEYBOARD = 27; 481 482 static final String[] HandlerDebugString = { 483 "REMEMBER_PASSWORD", // = 1; 484 "NEVER_REMEMBER_PASSWORD", // = 2; 485 "SWITCH_TO_SHORTPRESS", // = 3; 486 "SWITCH_TO_LONGPRESS", // = 4; 487 "RELEASE_SINGLE_TAP", // = 5; 488 "REQUEST_FORM_DATA", // = 6; 489 "SWITCH_TO_CLICK", // = 7; 490 "RESUME_WEBCORE_UPDATE", // = 8; 491 "9", 492 "SCROLL_TO_MSG_ID", // = 10; 493 "SCROLL_BY_MSG_ID", // = 11; 494 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 495 "SYNC_SCROLL_TO_MSG_ID", // = 13; 496 "NEW_PICTURE_MSG_ID", // = 14; 497 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 498 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 499 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 500 "18", // = 18; 501 "MOVE_OUT_OF_PLUGIN", // = 19; 502 "CLEAR_TEXT_ENTRY", // = 20; 503 "UPDATE_TEXT_SELECTION_MSG_ID", // = 21; 504 "UPDATE_CLIPBOARD", // = 22; 505 "LONG_PRESS_CENTER", // = 23; 506 "PREVENT_TOUCH_ID", // = 24; 507 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 508 "INVAL_RECT_MSG_ID", // = 26; 509 "REQUEST_KEYBOARD" // = 27; 510 }; 511 512 // default scale limit. Depending on the display density 513 private static float DEFAULT_MAX_ZOOM_SCALE; 514 private static float DEFAULT_MIN_ZOOM_SCALE; 515 // scale limit, which can be set through viewport meta tag in the web page 516 private float mMaxZoomScale; 517 private float mMinZoomScale; 518 private boolean mMinZoomScaleFixed = true; 519 520 // initial scale in percent. 0 means using default. 521 private int mInitialScale = 0; 522 523 // while in the zoom overview mode, the page's width is fully fit to the 524 // current window. The page is alive, in another words, you can click to 525 // follow the links. Double tap will toggle between zoom overview mode and 526 // the last zoom scale. 527 boolean mInZoomOverview = false; 528 529 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 530 // engadget always have wider mContentWidth no matter what viewport size is. 531 int mZoomOverviewWidth = WebViewCore.DEFAULT_VIEWPORT_WIDTH; 532 float mLastScale; 533 534 // default scale. Depending on the display density. 535 static int DEFAULT_SCALE_PERCENT; 536 private float mDefaultScale; 537 538 // set to true temporarily while the zoom control is being dragged 539 private boolean mPreviewZoomOnly = false; 540 541 // computed scale and inverse, from mZoomWidth. 542 private float mActualScale; 543 private float mInvActualScale; 544 // if this is non-zero, it is used on drawing rather than mActualScale 545 private float mZoomScale; 546 private float mInvInitialZoomScale; 547 private float mInvFinalZoomScale; 548 private int mInitialScrollX; 549 private int mInitialScrollY; 550 private long mZoomStart; 551 private static final int ZOOM_ANIMATION_LENGTH = 500; 552 553 private boolean mUserScroll = false; 554 555 private int mSnapScrollMode = SNAP_NONE; 556 private static final int SNAP_NONE = 1; 557 private static final int SNAP_X = 2; 558 private static final int SNAP_Y = 3; 559 private static final int SNAP_X_LOCK = 4; 560 private static final int SNAP_Y_LOCK = 5; 561 private boolean mSnapPositive; 562 563 // Used to match key downs and key ups 564 private boolean mGotKeyDown; 565 566 /* package */ static boolean mLogEvent = true; 567 private static final int EVENT_LOG_ZOOM_LEVEL_CHANGE = 70101; 568 private static final int EVENT_LOG_DOUBLE_TAP_DURATION = 70102; 569 570 // for event log 571 private long mLastTouchUpTime = 0; 572 573 /** 574 * URI scheme for telephone number 575 */ 576 public static final String SCHEME_TEL = "tel:"; 577 /** 578 * URI scheme for email address 579 */ 580 public static final String SCHEME_MAILTO = "mailto:"; 581 /** 582 * URI scheme for map address 583 */ 584 public static final String SCHEME_GEO = "geo:0,0?q="; 585 586 private int mBackgroundColor = Color.WHITE; 587 588 // Used to notify listeners of a new picture. 589 private PictureListener mPictureListener; 590 /** 591 * Interface to listen for new pictures as they change. 592 */ 593 public interface PictureListener { 594 /** 595 * Notify the listener that the picture has changed. 596 * @param view The WebView that owns the picture. 597 * @param picture The new picture. 598 */ 599 public void onNewPicture(WebView view, Picture picture); 600 } 601 602 // FIXME: Want to make this public, but need to change the API file. 603 public /*static*/ class HitTestResult { 604 /** 605 * Default HitTestResult, where the target is unknown 606 */ 607 public static final int UNKNOWN_TYPE = 0; 608 /** 609 * HitTestResult for hitting a HTML::a tag 610 */ 611 public static final int ANCHOR_TYPE = 1; 612 /** 613 * HitTestResult for hitting a phone number 614 */ 615 public static final int PHONE_TYPE = 2; 616 /** 617 * HitTestResult for hitting a map address 618 */ 619 public static final int GEO_TYPE = 3; 620 /** 621 * HitTestResult for hitting an email address 622 */ 623 public static final int EMAIL_TYPE = 4; 624 /** 625 * HitTestResult for hitting an HTML::img tag 626 */ 627 public static final int IMAGE_TYPE = 5; 628 /** 629 * HitTestResult for hitting a HTML::a tag which contains HTML::img 630 */ 631 public static final int IMAGE_ANCHOR_TYPE = 6; 632 /** 633 * HitTestResult for hitting a HTML::a tag with src=http 634 */ 635 public static final int SRC_ANCHOR_TYPE = 7; 636 /** 637 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 638 */ 639 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 640 /** 641 * HitTestResult for hitting an edit text area 642 */ 643 public static final int EDIT_TEXT_TYPE = 9; 644 645 private int mType; 646 private String mExtra; 647 648 HitTestResult() { 649 mType = UNKNOWN_TYPE; 650 } 651 652 private void setType(int type) { 653 mType = type; 654 } 655 656 private void setExtra(String extra) { 657 mExtra = extra; 658 } 659 660 public int getType() { 661 return mType; 662 } 663 664 public String getExtra() { 665 return mExtra; 666 } 667 } 668 669 // The View containing the zoom controls 670 private ExtendedZoomControls mZoomControls; 671 private Runnable mZoomControlRunnable; 672 673 private ZoomButtonsController mZoomButtonsController; 674 675 // These keep track of the center point of the zoom. They are used to 676 // determine the point around which we should zoom. 677 private float mZoomCenterX; 678 private float mZoomCenterY; 679 680 private ZoomButtonsController.OnZoomListener mZoomListener = 681 new ZoomButtonsController.OnZoomListener() { 682 683 public void onVisibilityChanged(boolean visible) { 684 if (visible) { 685 switchOutDrawHistory(); 686 updateZoomButtonsEnabled(); 687 } 688 } 689 690 public void onZoom(boolean zoomIn) { 691 if (zoomIn) { 692 zoomIn(); 693 } else { 694 zoomOut(); 695 } 696 697 updateZoomButtonsEnabled(); 698 } 699 }; 700 701 /** 702 * Construct a new WebView with a Context object. 703 * @param context A Context object used to access application assets. 704 */ 705 public WebView(Context context) { 706 this(context, null); 707 } 708 709 /** 710 * Construct a new WebView with layout parameters. 711 * @param context A Context object used to access application assets. 712 * @param attrs An AttributeSet passed to our parent. 713 */ 714 public WebView(Context context, AttributeSet attrs) { 715 this(context, attrs, com.android.internal.R.attr.webViewStyle); 716 } 717 718 /** 719 * Construct a new WebView with layout parameters and a default style. 720 * @param context A Context object used to access application assets. 721 * @param attrs An AttributeSet passed to our parent. 722 * @param defStyle The default style resource ID. 723 */ 724 public WebView(Context context, AttributeSet attrs, int defStyle) { 725 this(context, attrs, defStyle, null); 726 } 727 728 /** 729 * Construct a new WebView with layout parameters, a default style and a set 730 * of custom Javscript interfaces to be added to the WebView at initialization 731 * time. This guraratees that these interfaces will be available when the JS 732 * context is initialized. 733 * @param context A Context object used to access application assets. 734 * @param attrs An AttributeSet passed to our parent. 735 * @param defStyle The default style resource ID. 736 * @param javascriptInterfaces is a Map of intareface names, as keys, and 737 * object implementing those interfaces, as values. 738 * @hide pending API council approval. 739 */ 740 protected WebView(Context context, AttributeSet attrs, int defStyle, 741 Map<String, Object> javascriptInterfaces) { 742 super(context, attrs, defStyle); 743 init(); 744 745 mCallbackProxy = new CallbackProxy(context, this); 746 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 747 mDatabase = WebViewDatabase.getInstance(context); 748 mScroller = new Scroller(context); 749 750 mViewManager = new ViewManager(this); 751 752 mZoomButtonsController = new ZoomButtonsController(this); 753 mZoomButtonsController.setOnZoomListener(mZoomListener); 754 // ZoomButtonsController positions the buttons at the bottom, but in 755 // the middle. Change their layout parameters so they appear on the 756 // right. 757 View controls = mZoomButtonsController.getZoomControls(); 758 ViewGroup.LayoutParams params = controls.getLayoutParams(); 759 if (params instanceof FrameLayout.LayoutParams) { 760 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 761 params; 762 frameParams.gravity = Gravity.RIGHT; 763 } 764 } 765 766 private void updateZoomButtonsEnabled() { 767 boolean canZoomIn = mActualScale < mMaxZoomScale; 768 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 769 if (!canZoomIn && !canZoomOut) { 770 // Hide the zoom in and out buttons, as well as the fit to page 771 // button, if the page cannot zoom 772 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 773 } else { 774 // Bring back the hidden zoom controls. 775 mZoomButtonsController.getZoomControls() 776 .setVisibility(View.VISIBLE); 777 // Set each one individually, as a page may be able to zoom in 778 // or out. 779 mZoomButtonsController.setZoomInEnabled(canZoomIn); 780 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 781 } 782 } 783 784 private void init() { 785 setWillNotDraw(false); 786 setFocusable(true); 787 setFocusableInTouchMode(true); 788 setClickable(true); 789 setLongClickable(true); 790 791 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 792 int slop = configuration.getScaledTouchSlop(); 793 mTouchSlopSquare = slop * slop; 794 mMinLockSnapReverseDistance = slop; 795 slop = configuration.getScaledDoubleTapSlop(); 796 mDoubleTapSlopSquare = slop * slop; 797 final float density = getContext().getResources().getDisplayMetrics().density; 798 // use one line height, 16 based on our current default font, for how 799 // far we allow a touch be away from the edge of a link 800 mNavSlop = (int) (16 * density); 801 // density adjusted scale factors 802 DEFAULT_SCALE_PERCENT = (int) (100 * density); 803 mDefaultScale = density; 804 mActualScale = density; 805 mInvActualScale = 1 / density; 806 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 807 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 808 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 809 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 810 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 811 } 812 813 /* package */void updateDefaultZoomDensity(int zoomDensity) { 814 final float density = getContext().getResources().getDisplayMetrics().density 815 * 100 / zoomDensity; 816 if (Math.abs(density - mDefaultScale) > 0.01) { 817 float scaleFactor = density / mDefaultScale; 818 // adjust the limits 819 mNavSlop = (int) (16 * density); 820 DEFAULT_SCALE_PERCENT = (int) (100 * density); 821 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 822 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 823 mDefaultScale = density; 824 mMaxZoomScale *= scaleFactor; 825 mMinZoomScale *= scaleFactor; 826 setNewZoomScale(mActualScale * scaleFactor, false); 827 } 828 } 829 830 /* package */ boolean onSavePassword(String schemePlusHost, String username, 831 String password, final Message resumeMsg) { 832 boolean rVal = false; 833 if (resumeMsg == null) { 834 // null resumeMsg implies saving password silently 835 mDatabase.setUsernamePassword(schemePlusHost, username, password); 836 } else { 837 final Message remember = mPrivateHandler.obtainMessage( 838 REMEMBER_PASSWORD); 839 remember.getData().putString("host", schemePlusHost); 840 remember.getData().putString("username", username); 841 remember.getData().putString("password", password); 842 remember.obj = resumeMsg; 843 844 final Message neverRemember = mPrivateHandler.obtainMessage( 845 NEVER_REMEMBER_PASSWORD); 846 neverRemember.getData().putString("host", schemePlusHost); 847 neverRemember.getData().putString("username", username); 848 neverRemember.getData().putString("password", password); 849 neverRemember.obj = resumeMsg; 850 851 new AlertDialog.Builder(getContext()) 852 .setTitle(com.android.internal.R.string.save_password_label) 853 .setMessage(com.android.internal.R.string.save_password_message) 854 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 855 new DialogInterface.OnClickListener() { 856 public void onClick(DialogInterface dialog, int which) { 857 resumeMsg.sendToTarget(); 858 } 859 }) 860 .setNeutralButton(com.android.internal.R.string.save_password_remember, 861 new DialogInterface.OnClickListener() { 862 public void onClick(DialogInterface dialog, int which) { 863 remember.sendToTarget(); 864 } 865 }) 866 .setNegativeButton(com.android.internal.R.string.save_password_never, 867 new DialogInterface.OnClickListener() { 868 public void onClick(DialogInterface dialog, int which) { 869 neverRemember.sendToTarget(); 870 } 871 }) 872 .setOnCancelListener(new OnCancelListener() { 873 public void onCancel(DialogInterface dialog) { 874 resumeMsg.sendToTarget(); 875 } 876 }).show(); 877 // Return true so that WebViewCore will pause while the dialog is 878 // up. 879 rVal = true; 880 } 881 return rVal; 882 } 883 884 @Override 885 public void setScrollBarStyle(int style) { 886 if (style == View.SCROLLBARS_INSIDE_INSET 887 || style == View.SCROLLBARS_OUTSIDE_INSET) { 888 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 889 } else { 890 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 891 } 892 super.setScrollBarStyle(style); 893 } 894 895 /** 896 * Specify whether the horizontal scrollbar has overlay style. 897 * @param overlay TRUE if horizontal scrollbar should have overlay style. 898 */ 899 public void setHorizontalScrollbarOverlay(boolean overlay) { 900 mOverlayHorizontalScrollbar = overlay; 901 } 902 903 /** 904 * Specify whether the vertical scrollbar has overlay style. 905 * @param overlay TRUE if vertical scrollbar should have overlay style. 906 */ 907 public void setVerticalScrollbarOverlay(boolean overlay) { 908 mOverlayVerticalScrollbar = overlay; 909 } 910 911 /** 912 * Return whether horizontal scrollbar has overlay style 913 * @return TRUE if horizontal scrollbar has overlay style. 914 */ 915 public boolean overlayHorizontalScrollbar() { 916 return mOverlayHorizontalScrollbar; 917 } 918 919 /** 920 * Return whether vertical scrollbar has overlay style 921 * @return TRUE if vertical scrollbar has overlay style. 922 */ 923 public boolean overlayVerticalScrollbar() { 924 return mOverlayVerticalScrollbar; 925 } 926 927 /* 928 * Return the width of the view where the content of WebView should render 929 * to. 930 */ 931 private int getViewWidth() { 932 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 933 return getWidth(); 934 } else { 935 return getWidth() - getVerticalScrollbarWidth(); 936 } 937 } 938 939 /* 940 * Return the height of the view where the content of WebView should render 941 * to. Note that this excludes mTitleBar, if there is one. 942 */ 943 private int getViewHeight() { 944 int height = getHeight(); 945 if (isHorizontalScrollBarEnabled() && mOverlayHorizontalScrollbar) { 946 height -= getHorizontalScrollbarHeight(); 947 } 948 if (mTitleBar != null) { 949 int titleBarVisibleHeight = mTitleBar.getHeight() - mScrollY; 950 if (titleBarVisibleHeight > 0) { 951 height -= titleBarVisibleHeight; 952 } 953 } 954 return height; 955 } 956 957 /** 958 * @return The SSL certificate for the main top-level page or null if 959 * there is no certificate (the site is not secure). 960 */ 961 public SslCertificate getCertificate() { 962 return mCertificate; 963 } 964 965 /** 966 * Sets the SSL certificate for the main top-level page. 967 */ 968 public void setCertificate(SslCertificate certificate) { 969 // here, the certificate can be null (if the site is not secure) 970 mCertificate = certificate; 971 } 972 973 //------------------------------------------------------------------------- 974 // Methods called by activity 975 //------------------------------------------------------------------------- 976 977 /** 978 * Save the username and password for a particular host in the WebView's 979 * internal database. 980 * @param host The host that required the credentials. 981 * @param username The username for the given host. 982 * @param password The password for the given host. 983 */ 984 public void savePassword(String host, String username, String password) { 985 mDatabase.setUsernamePassword(host, username, password); 986 } 987 988 /** 989 * Set the HTTP authentication credentials for a given host and realm. 990 * 991 * @param host The host for the credentials. 992 * @param realm The realm for the credentials. 993 * @param username The username for the password. If it is null, it means 994 * password can't be saved. 995 * @param password The password 996 */ 997 public void setHttpAuthUsernamePassword(String host, String realm, 998 String username, String password) { 999 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1000 } 1001 1002 /** 1003 * Retrieve the HTTP authentication username and password for a given 1004 * host & realm pair 1005 * 1006 * @param host The host for which the credentials apply. 1007 * @param realm The realm for which the credentials apply. 1008 * @return String[] if found, String[0] is username, which can be null and 1009 * String[1] is password. Return null if it can't find anything. 1010 */ 1011 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1012 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1013 } 1014 1015 /** 1016 * Destroy the internal state of the WebView. This method should be called 1017 * after the WebView has been removed from the view system. No other 1018 * methods may be called on a WebView after destroy. 1019 */ 1020 public void destroy() { 1021 clearTextEntry(); 1022 if (mWebViewCore != null) { 1023 // Set the handlers to null before destroying WebViewCore so no 1024 // more messages will be posted. 1025 mCallbackProxy.setWebViewClient(null); 1026 mCallbackProxy.setWebChromeClient(null); 1027 // Tell WebViewCore to destroy itself 1028 WebViewCore webViewCore = mWebViewCore; 1029 mWebViewCore = null; // prevent using partial webViewCore 1030 webViewCore.destroy(); 1031 // Remove any pending messages that might not be serviced yet. 1032 mPrivateHandler.removeCallbacksAndMessages(null); 1033 mCallbackProxy.removeCallbacksAndMessages(null); 1034 // Wake up the WebCore thread just in case it is waiting for a 1035 // javascript dialog. 1036 synchronized (mCallbackProxy) { 1037 mCallbackProxy.notify(); 1038 } 1039 } 1040 if (mNativeClass != 0) { 1041 nativeDestroy(); 1042 mNativeClass = 0; 1043 } 1044 } 1045 1046 /** 1047 * Enables platform notifications of data state and proxy changes. 1048 */ 1049 public static void enablePlatformNotifications() { 1050 Network.enablePlatformNotifications(); 1051 } 1052 1053 /** 1054 * If platform notifications are enabled, this should be called 1055 * from the Activity's onPause() or onStop(). 1056 */ 1057 public static void disablePlatformNotifications() { 1058 Network.disablePlatformNotifications(); 1059 } 1060 1061 /** 1062 * Sets JavaScript engine flags. 1063 * 1064 * @param flags JS engine flags in a String 1065 * 1066 * @hide pending API solidification 1067 */ 1068 public void setJsFlags(String flags) { 1069 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1070 } 1071 1072 /** 1073 * Inform WebView of the network state. This is used to set 1074 * the javascript property window.navigator.isOnline and 1075 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1076 * @param networkUp boolean indicating if network is available 1077 */ 1078 public void setNetworkAvailable(boolean networkUp) { 1079 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1080 networkUp ? 1 : 0, 0); 1081 } 1082 1083 /** 1084 * Save the state of this WebView used in 1085 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1086 * method no longer stores the display data for this WebView. The previous 1087 * behavior could potentially leak files if {@link #restoreState} was never 1088 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1089 * and restoring the display data. 1090 * @param outState The Bundle to store the WebView state. 1091 * @return The same copy of the back/forward list used to save the state. If 1092 * saveState fails, the returned list will be null. 1093 * @see #savePicture 1094 * @see #restorePicture 1095 */ 1096 public WebBackForwardList saveState(Bundle outState) { 1097 if (outState == null) { 1098 return null; 1099 } 1100 // We grab a copy of the back/forward list because a client of WebView 1101 // may have invalidated the history list by calling clearHistory. 1102 WebBackForwardList list = copyBackForwardList(); 1103 final int currentIndex = list.getCurrentIndex(); 1104 final int size = list.getSize(); 1105 // We should fail saving the state if the list is empty or the index is 1106 // not in a valid range. 1107 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1108 return null; 1109 } 1110 outState.putInt("index", currentIndex); 1111 // FIXME: This should just be a byte[][] instead of ArrayList but 1112 // Parcel.java does not have the code to handle multi-dimensional 1113 // arrays. 1114 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1115 for (int i = 0; i < size; i++) { 1116 WebHistoryItem item = list.getItemAtIndex(i); 1117 byte[] data = item.getFlattenedData(); 1118 if (data == null) { 1119 // It would be very odd to not have any data for a given history 1120 // item. And we will fail to rebuild the history list without 1121 // flattened data. 1122 return null; 1123 } 1124 history.add(data); 1125 } 1126 outState.putSerializable("history", history); 1127 if (mCertificate != null) { 1128 outState.putBundle("certificate", 1129 SslCertificate.saveState(mCertificate)); 1130 } 1131 return list; 1132 } 1133 1134 /** 1135 * Save the current display data to the Bundle given. Used in conjunction 1136 * with {@link #saveState}. 1137 * @param b A Bundle to store the display data. 1138 * @param dest The file to store the serialized picture data. Will be 1139 * overwritten with this WebView's picture data. 1140 * @return True if the picture was successfully saved. 1141 */ 1142 public boolean savePicture(Bundle b, File dest) { 1143 if (dest == null || b == null) { 1144 return false; 1145 } 1146 final Picture p = capturePicture(); 1147 try { 1148 final FileOutputStream out = new FileOutputStream(dest); 1149 p.writeToStream(out); 1150 out.close(); 1151 } catch (FileNotFoundException e){ 1152 e.printStackTrace(); 1153 } catch (IOException e) { 1154 e.printStackTrace(); 1155 } catch (RuntimeException e) { 1156 e.printStackTrace(); 1157 } 1158 if (dest.length() > 0) { 1159 b.putInt("scrollX", mScrollX); 1160 b.putInt("scrollY", mScrollY); 1161 b.putFloat("scale", mActualScale); 1162 if (mInZoomOverview) { 1163 b.putFloat("lastScale", mLastScale); 1164 } 1165 return true; 1166 } 1167 return false; 1168 } 1169 1170 /** 1171 * Restore the display data that was save in {@link #savePicture}. Used in 1172 * conjunction with {@link #restoreState}. 1173 * @param b A Bundle containing the saved display data. 1174 * @param src The file where the picture data was stored. 1175 * @return True if the picture was successfully restored. 1176 */ 1177 public boolean restorePicture(Bundle b, File src) { 1178 if (src == null || b == null) { 1179 return false; 1180 } 1181 if (src.exists()) { 1182 Picture p = null; 1183 try { 1184 final FileInputStream in = new FileInputStream(src); 1185 p = Picture.createFromStream(in); 1186 in.close(); 1187 } catch (FileNotFoundException e){ 1188 e.printStackTrace(); 1189 } catch (RuntimeException e) { 1190 e.printStackTrace(); 1191 } catch (IOException e) { 1192 e.printStackTrace(); 1193 } 1194 if (p != null) { 1195 int sx = b.getInt("scrollX", 0); 1196 int sy = b.getInt("scrollY", 0); 1197 float scale = b.getFloat("scale", 1.0f); 1198 mDrawHistory = true; 1199 mHistoryPicture = p; 1200 mScrollX = sx; 1201 mScrollY = sy; 1202 mHistoryWidth = Math.round(p.getWidth() * scale); 1203 mHistoryHeight = Math.round(p.getHeight() * scale); 1204 // as getWidth() / getHeight() of the view are not 1205 // available yet, set up mActualScale, so that when 1206 // onSizeChanged() is called, the rest will be set 1207 // correctly 1208 mActualScale = scale; 1209 float lastScale = b.getFloat("lastScale", -1.0f); 1210 if (lastScale > 0) { 1211 mInZoomOverview = true; 1212 mLastScale = lastScale; 1213 } else { 1214 mInZoomOverview = false; 1215 } 1216 invalidate(); 1217 return true; 1218 } 1219 } 1220 return false; 1221 } 1222 1223 /** 1224 * Restore the state of this WebView from the given map used in 1225 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1226 * be called to restore the state of the WebView before using the object. If 1227 * it is called after the WebView has had a chance to build state (load 1228 * pages, create a back/forward list, etc.) there may be undesirable 1229 * side-effects. Please note that this method no longer restores the 1230 * display data for this WebView. See {@link #savePicture} and {@link 1231 * #restorePicture} for saving and restoring the display data. 1232 * @param inState The incoming Bundle of state. 1233 * @return The restored back/forward list or null if restoreState failed. 1234 * @see #savePicture 1235 * @see #restorePicture 1236 */ 1237 public WebBackForwardList restoreState(Bundle inState) { 1238 WebBackForwardList returnList = null; 1239 if (inState == null) { 1240 return returnList; 1241 } 1242 if (inState.containsKey("index") && inState.containsKey("history")) { 1243 mCertificate = SslCertificate.restoreState( 1244 inState.getBundle("certificate")); 1245 1246 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1247 final int index = inState.getInt("index"); 1248 // We can't use a clone of the list because we need to modify the 1249 // shared copy, so synchronize instead to prevent concurrent 1250 // modifications. 1251 synchronized (list) { 1252 final List<byte[]> history = 1253 (List<byte[]>) inState.getSerializable("history"); 1254 final int size = history.size(); 1255 // Check the index bounds so we don't crash in native code while 1256 // restoring the history index. 1257 if (index < 0 || index >= size) { 1258 return null; 1259 } 1260 for (int i = 0; i < size; i++) { 1261 byte[] data = history.remove(0); 1262 if (data == null) { 1263 // If we somehow have null data, we cannot reconstruct 1264 // the item and thus our history list cannot be rebuilt. 1265 return null; 1266 } 1267 WebHistoryItem item = new WebHistoryItem(data); 1268 list.addHistoryItem(item); 1269 } 1270 // Grab the most recent copy to return to the caller. 1271 returnList = copyBackForwardList(); 1272 // Update the copy to have the correct index. 1273 returnList.setCurrentIndex(index); 1274 } 1275 // Remove all pending messages because we are restoring previous 1276 // state. 1277 mWebViewCore.removeMessages(); 1278 // Send a restore state message. 1279 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1280 } 1281 return returnList; 1282 } 1283 1284 /** 1285 * Load the given url. 1286 * @param url The url of the resource to load. 1287 */ 1288 public void loadUrl(String url) { 1289 if (url == null) { 1290 return; 1291 } 1292 switchOutDrawHistory(); 1293 mWebViewCore.sendMessage(EventHub.LOAD_URL, url); 1294 clearTextEntry(); 1295 } 1296 1297 /** 1298 * Load the url with postData using "POST" method into the WebView. If url 1299 * is not a network url, it will be loaded with {link 1300 * {@link #loadUrl(String)} instead. 1301 * 1302 * @param url The url of the resource to load. 1303 * @param postData The data will be passed to "POST" request. 1304 */ 1305 public void postUrl(String url, byte[] postData) { 1306 if (URLUtil.isNetworkUrl(url)) { 1307 switchOutDrawHistory(); 1308 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1309 arg.mUrl = url; 1310 arg.mPostData = postData; 1311 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1312 clearTextEntry(); 1313 } else { 1314 loadUrl(url); 1315 } 1316 } 1317 1318 /** 1319 * Load the given data into the WebView. This will load the data into 1320 * WebView using the data: scheme. Content loaded through this mechanism 1321 * does not have the ability to load content from the network. 1322 * @param data A String of data in the given encoding. 1323 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1324 * @param encoding The encoding of the data. i.e. utf-8, base64 1325 */ 1326 public void loadData(String data, String mimeType, String encoding) { 1327 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1328 } 1329 1330 /** 1331 * Load the given data into the WebView, use the provided URL as the base 1332 * URL for the content. The base URL is the URL that represents the page 1333 * that is loaded through this interface. As such, it is used for the 1334 * history entry and to resolve any relative URLs. The failUrl is used if 1335 * browser fails to load the data provided. If it is empty or null, and the 1336 * load fails, then no history entry is created. 1337 * <p> 1338 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1339 * files through "file:///android_asset/" for the sub resources is more 1340 * restricted. If you provide null or empty string as baseUrl, you won't be 1341 * able to access asset files. If the baseUrl is anything other than 1342 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1343 * sub resources. 1344 * 1345 * @param baseUrl Url to resolve relative paths with, if null defaults to 1346 * "about:blank" 1347 * @param data A String of data in the given encoding. 1348 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1349 * defaults to "text/html" 1350 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1351 * @param failUrl URL to use if the content fails to load or null. 1352 */ 1353 public void loadDataWithBaseURL(String baseUrl, String data, 1354 String mimeType, String encoding, String failUrl) { 1355 1356 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1357 loadData(data, mimeType, encoding); 1358 return; 1359 } 1360 switchOutDrawHistory(); 1361 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1362 arg.mBaseUrl = baseUrl; 1363 arg.mData = data; 1364 arg.mMimeType = mimeType; 1365 arg.mEncoding = encoding; 1366 arg.mFailUrl = failUrl; 1367 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1368 clearTextEntry(); 1369 } 1370 1371 /** 1372 * Stop the current load. 1373 */ 1374 public void stopLoading() { 1375 // TODO: should we clear all the messages in the queue before sending 1376 // STOP_LOADING? 1377 switchOutDrawHistory(); 1378 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1379 } 1380 1381 /** 1382 * Reload the current url. 1383 */ 1384 public void reload() { 1385 switchOutDrawHistory(); 1386 mWebViewCore.sendMessage(EventHub.RELOAD); 1387 } 1388 1389 /** 1390 * Return true if this WebView has a back history item. 1391 * @return True iff this WebView has a back history item. 1392 */ 1393 public boolean canGoBack() { 1394 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1395 synchronized (l) { 1396 if (l.getClearPending()) { 1397 return false; 1398 } else { 1399 return l.getCurrentIndex() > 0; 1400 } 1401 } 1402 } 1403 1404 /** 1405 * Go back in the history of this WebView. 1406 */ 1407 public void goBack() { 1408 goBackOrForward(-1); 1409 } 1410 1411 /** 1412 * Return true if this WebView has a forward history item. 1413 * @return True iff this Webview has a forward history item. 1414 */ 1415 public boolean canGoForward() { 1416 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1417 synchronized (l) { 1418 if (l.getClearPending()) { 1419 return false; 1420 } else { 1421 return l.getCurrentIndex() < l.getSize() - 1; 1422 } 1423 } 1424 } 1425 1426 /** 1427 * Go forward in the history of this WebView. 1428 */ 1429 public void goForward() { 1430 goBackOrForward(1); 1431 } 1432 1433 /** 1434 * Return true if the page can go back or forward the given 1435 * number of steps. 1436 * @param steps The negative or positive number of steps to move the 1437 * history. 1438 */ 1439 public boolean canGoBackOrForward(int steps) { 1440 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1441 synchronized (l) { 1442 if (l.getClearPending()) { 1443 return false; 1444 } else { 1445 int newIndex = l.getCurrentIndex() + steps; 1446 return newIndex >= 0 && newIndex < l.getSize(); 1447 } 1448 } 1449 } 1450 1451 /** 1452 * Go to the history item that is the number of steps away from 1453 * the current item. Steps is negative if backward and positive 1454 * if forward. 1455 * @param steps The number of steps to take back or forward in the back 1456 * forward list. 1457 */ 1458 public void goBackOrForward(int steps) { 1459 goBackOrForward(steps, false); 1460 } 1461 1462 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1463 // every time we go back or forward, we want to reset the 1464 // WebView certificate: 1465 // if the new site is secure, we will reload it and get a 1466 // new certificate set; 1467 // if the new site is not secure, the certificate must be 1468 // null, and that will be the case 1469 mCertificate = null; 1470 if (steps != 0) { 1471 clearTextEntry(); 1472 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1473 ignoreSnapshot ? 1 : 0); 1474 } 1475 } 1476 1477 private boolean extendScroll(int y) { 1478 int finalY = mScroller.getFinalY(); 1479 int newY = pinLocY(finalY + y); 1480 if (newY == finalY) return false; 1481 mScroller.setFinalY(newY); 1482 mScroller.extendDuration(computeDuration(0, y)); 1483 return true; 1484 } 1485 1486 /** 1487 * Scroll the contents of the view up by half the view size 1488 * @param top true to jump to the top of the page 1489 * @return true if the page was scrolled 1490 */ 1491 public boolean pageUp(boolean top) { 1492 if (mNativeClass == 0) { 1493 return false; 1494 } 1495 nativeClearCursor(); // start next trackball movement from page edge 1496 if (top) { 1497 // go to the top of the document 1498 return pinScrollTo(mScrollX, 0, true, 0); 1499 } 1500 // Page up 1501 int h = getHeight(); 1502 int y; 1503 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1504 y = -h + PAGE_SCROLL_OVERLAP; 1505 } else { 1506 y = -h / 2; 1507 } 1508 mUserScroll = true; 1509 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1510 : extendScroll(y); 1511 } 1512 1513 /** 1514 * Scroll the contents of the view down by half the page size 1515 * @param bottom true to jump to bottom of page 1516 * @return true if the page was scrolled 1517 */ 1518 public boolean pageDown(boolean bottom) { 1519 if (mNativeClass == 0) { 1520 return false; 1521 } 1522 nativeClearCursor(); // start next trackball movement from page edge 1523 if (bottom) { 1524 return pinScrollTo(mScrollX, mContentHeight, true, 0); 1525 } 1526 // Page down. 1527 int h = getHeight(); 1528 int y; 1529 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1530 y = h - PAGE_SCROLL_OVERLAP; 1531 } else { 1532 y = h / 2; 1533 } 1534 mUserScroll = true; 1535 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1536 : extendScroll(y); 1537 } 1538 1539 /** 1540 * Clear the view so that onDraw() will draw nothing but white background, 1541 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1542 */ 1543 public void clearView() { 1544 mContentWidth = 0; 1545 mContentHeight = 0; 1546 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1547 } 1548 1549 /** 1550 * Return a new picture that captures the current display of the webview. 1551 * This is a copy of the display, and will be unaffected if the webview 1552 * later loads a different URL. 1553 * 1554 * @return a picture containing the current contents of the view. Note this 1555 * picture is of the entire document, and is not restricted to the 1556 * bounds of the view. 1557 */ 1558 public Picture capturePicture() { 1559 if (null == mWebViewCore) return null; // check for out of memory tab 1560 return mWebViewCore.copyContentPicture(); 1561 } 1562 1563 /** 1564 * Return true if the browser is displaying a TextView for text input. 1565 */ 1566 private boolean inEditingMode() { 1567 return mWebTextView != null && mWebTextView.getParent() != null 1568 && mWebTextView.hasFocus(); 1569 } 1570 1571 private void clearTextEntry() { 1572 if (inEditingMode()) { 1573 mWebTextView.remove(); 1574 } 1575 } 1576 1577 /** 1578 * Return the current scale of the WebView 1579 * @return The current scale. 1580 */ 1581 public float getScale() { 1582 return mActualScale; 1583 } 1584 1585 /** 1586 * Set the initial scale for the WebView. 0 means default. If 1587 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1588 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1589 * WebView starts will this value as initial scale. 1590 * 1591 * @param scaleInPercent The initial scale in percent. 1592 */ 1593 public void setInitialScale(int scaleInPercent) { 1594 mInitialScale = scaleInPercent; 1595 } 1596 1597 /** 1598 * Invoke the graphical zoom picker widget for this WebView. This will 1599 * result in the zoom widget appearing on the screen to control the zoom 1600 * level of this WebView. 1601 */ 1602 public void invokeZoomPicker() { 1603 if (!getSettings().supportZoom()) { 1604 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1605 return; 1606 } 1607 clearTextEntry(); 1608 if (getSettings().getBuiltInZoomControls()) { 1609 mZoomButtonsController.setVisible(true); 1610 } else { 1611 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1612 mPrivateHandler.postDelayed(mZoomControlRunnable, 1613 ZOOM_CONTROLS_TIMEOUT); 1614 } 1615 } 1616 1617 /** 1618 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1619 * is found and the anchor has a non-javascript url, the HitTestResult type 1620 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1621 * anchor does not have a url or if it is a javascript url, the type will 1622 * be UNKNOWN_TYPE and the url has to be retrieved through 1623 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1624 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1625 * the "extra" field. A type of 1626 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1627 * a child node. If a phone number is found, the HitTestResult type is set 1628 * to PHONE_TYPE and the phone number is set in the "extra" field of 1629 * HitTestResult. If a map address is found, the HitTestResult type is set 1630 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1631 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1632 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1633 * HitTestResult type is set to UNKNOWN_TYPE. 1634 */ 1635 public HitTestResult getHitTestResult() { 1636 if (mNativeClass == 0) { 1637 return null; 1638 } 1639 1640 HitTestResult result = new HitTestResult(); 1641 if (nativeHasCursorNode()) { 1642 if (nativeCursorIsTextInput()) { 1643 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1644 } else { 1645 String text = nativeCursorText(); 1646 if (text != null) { 1647 if (text.startsWith(SCHEME_TEL)) { 1648 result.setType(HitTestResult.PHONE_TYPE); 1649 result.setExtra(text.substring(SCHEME_TEL.length())); 1650 } else if (text.startsWith(SCHEME_MAILTO)) { 1651 result.setType(HitTestResult.EMAIL_TYPE); 1652 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1653 } else if (text.startsWith(SCHEME_GEO)) { 1654 result.setType(HitTestResult.GEO_TYPE); 1655 result.setExtra(URLDecoder.decode(text 1656 .substring(SCHEME_GEO.length()))); 1657 } else if (nativeCursorIsAnchor()) { 1658 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1659 result.setExtra(text); 1660 } 1661 } 1662 } 1663 } 1664 int type = result.getType(); 1665 if (type == HitTestResult.UNKNOWN_TYPE 1666 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1667 // Now check to see if it is an image. 1668 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1669 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1670 String text = nativeImageURI(contentX, contentY); 1671 if (text != null) { 1672 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1673 HitTestResult.IMAGE_TYPE : 1674 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1675 result.setExtra(text); 1676 } 1677 } 1678 return result; 1679 } 1680 1681 /** 1682 * Request the href of an anchor element due to getFocusNodePath returning 1683 * "href." If hrefMsg is null, this method returns immediately and does not 1684 * dispatch hrefMsg to its target. 1685 * 1686 * @param hrefMsg This message will be dispatched with the result of the 1687 * request as the data member with "url" as key. The result can 1688 * be null. 1689 */ 1690 // FIXME: API change required to change the name of this function. We now 1691 // look at the cursor node, and not the focus node. Also, what is 1692 // getFocusNodePath? 1693 public void requestFocusNodeHref(Message hrefMsg) { 1694 if (hrefMsg == null || mNativeClass == 0) { 1695 return; 1696 } 1697 if (nativeCursorIsAnchor()) { 1698 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1699 nativeCursorFramePointer(), nativeCursorNodePointer(), 1700 hrefMsg); 1701 } 1702 } 1703 1704 /** 1705 * Request the url of the image last touched by the user. msg will be sent 1706 * to its target with a String representing the url as its object. 1707 * 1708 * @param msg This message will be dispatched with the result of the request 1709 * as the data member with "url" as key. The result can be null. 1710 */ 1711 public void requestImageRef(Message msg) { 1712 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1713 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1714 String ref = nativeImageURI(contentX, contentY); 1715 Bundle data = msg.getData(); 1716 data.putString("url", ref); 1717 msg.setData(data); 1718 msg.sendToTarget(); 1719 } 1720 1721 private static int pinLoc(int x, int viewMax, int docMax) { 1722// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1723 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1724 // pin the short document to the top/left of the screen 1725 x = 0; 1726// Log.d(LOGTAG, "--- center " + x); 1727 } else if (x < 0) { 1728 x = 0; 1729// Log.d(LOGTAG, "--- zero"); 1730 } else if (x + viewMax > docMax) { 1731 x = docMax - viewMax; 1732// Log.d(LOGTAG, "--- pin " + x); 1733 } 1734 return x; 1735 } 1736 1737 // Expects x in view coordinates 1738 private int pinLocX(int x) { 1739 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1740 } 1741 1742 // Expects y in view coordinates 1743 private int pinLocY(int y) { 1744 return pinLoc(y, getViewHeight(), computeVerticalScrollRange()); 1745 } 1746 1747 /** 1748 * A title bar which is embedded in this WebView, and scrolls along with it 1749 * vertically, but not horizontally. 1750 */ 1751 private View mTitleBar; 1752 1753 /** 1754 * Add or remove a title bar to be embedded into the WebView, and scroll 1755 * along with it vertically, while remaining in view horizontally. Pass 1756 * null to remove the title bar from the WebView, and return to drawing 1757 * the WebView normally without translating to account for the title bar. 1758 * @hide 1759 */ 1760 public void addTitleBar(View v) { 1761 if (null == v) { 1762 removeView(mTitleBar); 1763 } else { 1764 addView(v, new AbsoluteLayout.LayoutParams( 1765 ViewGroup.LayoutParams.FILL_PARENT, 1766 ViewGroup.LayoutParams.WRAP_CONTENT, mScrollX, 0)); 1767 } 1768 mTitleBar = v; 1769 } 1770 1771 /** 1772 * Given an x coordinate in view space, convert it to content space. Also 1773 * may be used for absolute heights (such as for the WebTextView's 1774 * textSize, which is unaffected by the height of the title bar). 1775 */ 1776 /*package*/ int viewToContentX(int x) { 1777 return Math.round(x * mInvActualScale); 1778 } 1779 1780 /** 1781 * Given a y coordinate in view space, convert it to content space. 1782 * Takes into account the height of the title bar if there is one 1783 * embedded into the WebView. 1784 */ 1785 /*package*/ int viewToContentY(int y) { 1786 if (mTitleBar != null) { 1787 y -= mTitleBar.getHeight(); 1788 } 1789 return viewToContentX(y); 1790 } 1791 1792 /** 1793 * Given an x coordinate in content space, convert it to view 1794 * space. Also used for absolute heights. 1795 */ 1796 /*package*/ int contentToViewX(int x) { 1797 return Math.round(x * mActualScale); 1798 } 1799 1800 /** 1801 * Given a y coordinate in content space, convert it to view 1802 * space. Takes into account the height of the title bar. 1803 */ 1804 /*package*/ int contentToViewY(int y) { 1805 int val = Math.round(y * mActualScale); 1806 if (mTitleBar != null) { 1807 val += mTitleBar.getHeight(); 1808 } 1809 return val; 1810 } 1811 1812 // Called by JNI to invalidate the View, given rectangle coordinates in 1813 // content space 1814 private void viewInvalidate(int l, int t, int r, int b) { 1815 invalidate(contentToViewX(l), contentToViewY(t), contentToViewX(r), 1816 contentToViewY(b)); 1817 } 1818 1819 // Called by JNI to invalidate the View after a delay, given rectangle 1820 // coordinates in content space 1821 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1822 postInvalidateDelayed(delay, contentToViewX(l), contentToViewY(t), 1823 contentToViewX(r), contentToViewY(b)); 1824 } 1825 1826 private Rect contentToView(Rect x) { 1827 return new Rect(contentToViewX(x.left), contentToViewY(x.top) 1828 , contentToViewX(x.right), contentToViewY(x.bottom)); 1829 } 1830 1831 // stop the scroll animation, and don't let a subsequent fling add 1832 // to the existing velocity 1833 private void abortAnimation() { 1834 mScroller.abortAnimation(); 1835 mLastVelocity = 0; 1836 } 1837 1838 /* call from webcoreview.draw(), so we're still executing in the UI thread 1839 */ 1840 private void recordNewContentSize(int w, int h, boolean updateLayout) { 1841 1842 // premature data from webkit, ignore 1843 if ((w | h) == 0) { 1844 return; 1845 } 1846 1847 // don't abort a scroll animation if we didn't change anything 1848 if (mContentWidth != w || mContentHeight != h) { 1849 // record new dimensions 1850 mContentWidth = w; 1851 mContentHeight = h; 1852 // If history Picture is drawn, don't update scroll. They will be 1853 // updated when we get out of that mode. 1854 if (!mDrawHistory) { 1855 // repin our scroll, taking into account the new content size 1856 int oldX = mScrollX; 1857 int oldY = mScrollY; 1858 mScrollX = pinLocX(mScrollX); 1859 mScrollY = pinLocY(mScrollY); 1860 // android.util.Log.d("skia", "recordNewContentSize - 1861 // abortAnimation"); 1862 abortAnimation(); // just in case 1863 if (oldX != mScrollX || oldY != mScrollY) { 1864 sendOurVisibleRect(); 1865 } 1866 } 1867 } 1868 contentSizeChanged(updateLayout); 1869 } 1870 1871 private void setNewZoomScale(float scale, boolean force) { 1872 if (scale < mMinZoomScale) { 1873 scale = mMinZoomScale; 1874 } else if (scale > mMaxZoomScale) { 1875 scale = mMaxZoomScale; 1876 } 1877 if (scale != mActualScale || force) { 1878 if (mDrawHistory) { 1879 // If history Picture is drawn, don't update scroll. They will 1880 // be updated when we get out of that mode. 1881 if (scale != mActualScale && !mPreviewZoomOnly) { 1882 mCallbackProxy.onScaleChanged(mActualScale, scale); 1883 } 1884 mActualScale = scale; 1885 mInvActualScale = 1 / scale; 1886 if (!mPreviewZoomOnly) { 1887 sendViewSizeZoom(); 1888 } 1889 } else { 1890 // update our scroll so we don't appear to jump 1891 // i.e. keep the center of the doc in the center of the view 1892 1893 int oldX = mScrollX; 1894 int oldY = mScrollY; 1895 float ratio = scale * mInvActualScale; // old inverse 1896 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 1897 float sy = ratio * oldY + (ratio - 1) * mZoomCenterY; 1898 1899 // now update our new scale and inverse 1900 if (scale != mActualScale && !mPreviewZoomOnly) { 1901 mCallbackProxy.onScaleChanged(mActualScale, scale); 1902 } 1903 mActualScale = scale; 1904 mInvActualScale = 1 / scale; 1905 1906 // Scale all the child views 1907 mViewManager.scaleAll(); 1908 1909 // as we don't have animation for scaling, don't do animation 1910 // for scrolling, as it causes weird intermediate state 1911 // pinScrollTo(Math.round(sx), Math.round(sy)); 1912 mScrollX = pinLocX(Math.round(sx)); 1913 mScrollY = pinLocY(Math.round(sy)); 1914 1915 if (!mPreviewZoomOnly) { 1916 sendViewSizeZoom(); 1917 sendOurVisibleRect(); 1918 } 1919 } 1920 } 1921 } 1922 1923 // Used to avoid sending many visible rect messages. 1924 private Rect mLastVisibleRectSent; 1925 private Rect mLastGlobalRect; 1926 1927 private Rect sendOurVisibleRect() { 1928 Rect rect = new Rect(); 1929 calcOurContentVisibleRect(rect); 1930 // Rect.equals() checks for null input. 1931 if (!rect.equals(mLastVisibleRectSent)) { 1932 Point pos = new Point(rect.left, rect.top); 1933 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 1934 nativeMoveGeneration(), 0, pos); 1935 mLastVisibleRectSent = rect; 1936 } 1937 Rect globalRect = new Rect(); 1938 if (getGlobalVisibleRect(globalRect) 1939 && !globalRect.equals(mLastGlobalRect)) { 1940 if (DebugFlags.WEB_VIEW) { 1941 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 1942 + globalRect.top + ",r=" + globalRect.right + ",b=" 1943 + globalRect.bottom); 1944 } 1945 // TODO: the global offset is only used by windowRect() 1946 // in ChromeClientAndroid ; other clients such as touch 1947 // and mouse events could return view + screen relative points. 1948 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 1949 mLastGlobalRect = globalRect; 1950 } 1951 return rect; 1952 } 1953 1954 // Sets r to be the visible rectangle of our webview in view coordinates 1955 private void calcOurVisibleRect(Rect r) { 1956 Point p = new Point(); 1957 getGlobalVisibleRect(r, p); 1958 r.offset(-p.x, -p.y); 1959 if (mFindIsUp) { 1960 r.bottom -= FIND_HEIGHT; 1961 } 1962 } 1963 1964 // Sets r to be our visible rectangle in content coordinates 1965 private void calcOurContentVisibleRect(Rect r) { 1966 calcOurVisibleRect(r); 1967 r.left = viewToContentX(r.left); 1968 r.top = viewToContentY(r.top); 1969 r.right = viewToContentX(r.right); 1970 r.bottom = viewToContentY(r.bottom); 1971 } 1972 1973 static class ViewSizeData { 1974 int mWidth; 1975 int mHeight; 1976 int mTextWrapWidth; 1977 float mScale; 1978 boolean mIgnoreHeight; 1979 } 1980 1981 /** 1982 * Compute unzoomed width and height, and if they differ from the last 1983 * values we sent, send them to webkit (to be used has new viewport) 1984 * 1985 * @return true if new values were sent 1986 */ 1987 private boolean sendViewSizeZoom() { 1988 int viewWidth = getViewWidth(); 1989 int newWidth = Math.round(viewWidth * mInvActualScale); 1990 int newHeight = Math.round(getViewHeight() * mInvActualScale); 1991 /* 1992 * Because the native side may have already done a layout before the 1993 * View system was able to measure us, we have to send a height of 0 to 1994 * remove excess whitespace when we grow our width. This will trigger a 1995 * layout and a change in content size. This content size change will 1996 * mean that contentSizeChanged will either call this method directly or 1997 * indirectly from onSizeChanged. 1998 */ 1999 if (newWidth > mLastWidthSent && mWrapContent) { 2000 newHeight = 0; 2001 } 2002 // Avoid sending another message if the dimensions have not changed. 2003 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2004 ViewSizeData data = new ViewSizeData(); 2005 data.mWidth = newWidth; 2006 data.mHeight = newHeight; 2007 // while in zoom overview mode, the text are wrapped to the screen 2008 // width matching mLastScale. So that we don't trigger re-flow while 2009 // toggling between overview mode and normal mode. 2010 data.mTextWrapWidth = mInZoomOverview ? Math.round(viewWidth 2011 / mLastScale) : newWidth; 2012 data.mScale = mActualScale; 2013 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2014 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2015 mLastWidthSent = newWidth; 2016 mLastHeightSent = newHeight; 2017 return true; 2018 } 2019 return false; 2020 } 2021 2022 @Override 2023 protected int computeHorizontalScrollRange() { 2024 if (mDrawHistory) { 2025 return mHistoryWidth; 2026 } else { 2027 return contentToViewX(mContentWidth); 2028 } 2029 } 2030 2031 // Make sure this stays in sync with the actual height of the FindDialog. 2032 private static final int FIND_HEIGHT = 79; 2033 2034 @Override 2035 protected int computeVerticalScrollRange() { 2036 if (mDrawHistory) { 2037 return mHistoryHeight; 2038 } else { 2039 int height = contentToViewX(mContentHeight); 2040 if (mFindIsUp) { 2041 height += FIND_HEIGHT; 2042 } 2043 return height; 2044 } 2045 } 2046 2047 @Override 2048 protected int computeVerticalScrollOffset() { 2049 int offset = super.computeVerticalScrollOffset(); 2050 if (mTitleBar != null) { 2051 // Need to adjust so that the resulting offset is at minimum 2052 // the height of the title bar, if it is visible. 2053 offset += mTitleBar.getHeight()*computeVerticalScrollRange() 2054 /getViewHeight(); 2055 } 2056 return offset; 2057 } 2058 2059 @Override 2060 protected int computeVerticalScrollExtent() { 2061 return getViewHeight(); 2062 } 2063 2064 /** 2065 * Get the url for the current page. This is not always the same as the url 2066 * passed to WebViewClient.onPageStarted because although the load for 2067 * that url has begun, the current page may not have changed. 2068 * @return The url for the current page. 2069 */ 2070 public String getUrl() { 2071 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2072 return h != null ? h.getUrl() : null; 2073 } 2074 2075 /** 2076 * Get the original url for the current page. This is not always the same 2077 * as the url passed to WebViewClient.onPageStarted because although the 2078 * load for that url has begun, the current page may not have changed. 2079 * Also, there may have been redirects resulting in a different url to that 2080 * originally requested. 2081 * @return The url that was originally requested for the current page. 2082 */ 2083 public String getOriginalUrl() { 2084 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2085 return h != null ? h.getOriginalUrl() : null; 2086 } 2087 2088 /** 2089 * Get the title for the current page. This is the title of the current page 2090 * until WebViewClient.onReceivedTitle is called. 2091 * @return The title for the current page. 2092 */ 2093 public String getTitle() { 2094 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2095 return h != null ? h.getTitle() : null; 2096 } 2097 2098 /** 2099 * Get the favicon for the current page. This is the favicon of the current 2100 * page until WebViewClient.onReceivedIcon is called. 2101 * @return The favicon for the current page. 2102 */ 2103 public Bitmap getFavicon() { 2104 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2105 return h != null ? h.getFavicon() : null; 2106 } 2107 2108 /** 2109 * Get the touch icon url for the apple-touch-icon <link> element. 2110 * @hide 2111 */ 2112 public String getTouchIconUrl() { 2113 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2114 return h != null ? h.getTouchIconUrl() : null; 2115 } 2116 2117 /** 2118 * Get the progress for the current page. 2119 * @return The progress for the current page between 0 and 100. 2120 */ 2121 public int getProgress() { 2122 return mCallbackProxy.getProgress(); 2123 } 2124 2125 /** 2126 * @return the height of the HTML content. 2127 */ 2128 public int getContentHeight() { 2129 return mContentHeight; 2130 } 2131 2132 /** 2133 * Pause all layout, parsing, and javascript timers for all webviews. This 2134 * is a global requests, not restricted to just this webview. This can be 2135 * useful if the application has been paused. 2136 */ 2137 public void pauseTimers() { 2138 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2139 } 2140 2141 /** 2142 * Resume all layout, parsing, and javascript timers for all webviews. 2143 * This will resume dispatching all timers. 2144 */ 2145 public void resumeTimers() { 2146 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2147 } 2148 2149 /** 2150 * Call this to pause any extra processing associated with this view and 2151 * its associated DOM/plugins/javascript/etc. For example, if the view is 2152 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2153 * network traffic. When the view is again "active", call onResume(). 2154 * 2155 * Note that this differs from pauseTimers(), which affects all views/DOMs 2156 * @hide 2157 */ 2158 public void onPause() { 2159 if (!mIsPaused) { 2160 mIsPaused = true; 2161 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2162 } 2163 } 2164 2165 /** 2166 * Call this to balanace a previous call to onPause() 2167 * @hide 2168 */ 2169 public void onResume() { 2170 if (mIsPaused) { 2171 mIsPaused = false; 2172 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2173 } 2174 } 2175 2176 /** 2177 * Returns true if the view is paused, meaning onPause() was called. Calling 2178 * onResume() sets the paused state back to false. 2179 * @hide 2180 */ 2181 public boolean isPaused() { 2182 return mIsPaused; 2183 } 2184 2185 /** 2186 * Call this to inform the view that memory is low so that it can 2187 * free any available memory. 2188 * @hide 2189 */ 2190 public void freeMemory() { 2191 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2192 } 2193 2194 /** 2195 * Clear the resource cache. Note that the cache is per-application, so 2196 * this will clear the cache for all WebViews used. 2197 * 2198 * @param includeDiskFiles If false, only the RAM cache is cleared. 2199 */ 2200 public void clearCache(boolean includeDiskFiles) { 2201 // Note: this really needs to be a static method as it clears cache for all 2202 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2203 // we can't make this static. 2204 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2205 includeDiskFiles ? 1 : 0, 0); 2206 } 2207 2208 /** 2209 * Make sure that clearing the form data removes the adapter from the 2210 * currently focused textfield if there is one. 2211 */ 2212 public void clearFormData() { 2213 if (inEditingMode()) { 2214 AutoCompleteAdapter adapter = null; 2215 mWebTextView.setAdapterCustom(adapter); 2216 } 2217 } 2218 2219 /** 2220 * Tell the WebView to clear its internal back/forward list. 2221 */ 2222 public void clearHistory() { 2223 mCallbackProxy.getBackForwardList().setClearPending(); 2224 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2225 } 2226 2227 /** 2228 * Clear the SSL preferences table stored in response to proceeding with SSL 2229 * certificate errors. 2230 */ 2231 public void clearSslPreferences() { 2232 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2233 } 2234 2235 /** 2236 * Return the WebBackForwardList for this WebView. This contains the 2237 * back/forward list for use in querying each item in the history stack. 2238 * This is a copy of the private WebBackForwardList so it contains only a 2239 * snapshot of the current state. Multiple calls to this method may return 2240 * different objects. The object returned from this method will not be 2241 * updated to reflect any new state. 2242 */ 2243 public WebBackForwardList copyBackForwardList() { 2244 return mCallbackProxy.getBackForwardList().clone(); 2245 } 2246 2247 /* 2248 * Highlight and scroll to the next occurance of String in findAll. 2249 * Wraps the page infinitely, and scrolls. Must be called after 2250 * calling findAll. 2251 * 2252 * @param forward Direction to search. 2253 */ 2254 public void findNext(boolean forward) { 2255 nativeFindNext(forward); 2256 } 2257 2258 /* 2259 * Find all instances of find on the page and highlight them. 2260 * @param find String to find. 2261 * @return int The number of occurances of the String "find" 2262 * that were found. 2263 */ 2264 public int findAll(String find) { 2265 mFindIsUp = true; 2266 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2267 invalidate(); 2268 return result; 2269 } 2270 2271 // Used to know whether the find dialog is open. Affects whether 2272 // or not we draw the highlights for matches. 2273 private boolean mFindIsUp; 2274 2275 /** 2276 * Return the first substring consisting of the address of a physical 2277 * location. Currently, only addresses in the United States are detected, 2278 * and consist of: 2279 * - a house number 2280 * - a street name 2281 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2282 * - a city name 2283 * - a state or territory, either spelled out or two-letter abbr. 2284 * - an optional 5 digit or 9 digit zip code. 2285 * 2286 * All names must be correctly capitalized, and the zip code, if present, 2287 * must be valid for the state. The street type must be a standard USPS 2288 * spelling or abbreviation. The state or territory must also be spelled 2289 * or abbreviated using USPS standards. The house number may not exceed 2290 * five digits. 2291 * @param addr The string to search for addresses. 2292 * 2293 * @return the address, or if no address is found, return null. 2294 */ 2295 public static String findAddress(String addr) { 2296 return findAddress(addr, false); 2297 } 2298 2299 /** 2300 * @hide 2301 * Return the first substring consisting of the address of a physical 2302 * location. Currently, only addresses in the United States are detected, 2303 * and consist of: 2304 * - a house number 2305 * - a street name 2306 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2307 * - a city name 2308 * - a state or territory, either spelled out or two-letter abbr. 2309 * - an optional 5 digit or 9 digit zip code. 2310 * 2311 * Names are optionally capitalized, and the zip code, if present, 2312 * must be valid for the state. The street type must be a standard USPS 2313 * spelling or abbreviation. The state or territory must also be spelled 2314 * or abbreviated using USPS standards. The house number may not exceed 2315 * five digits. 2316 * @param addr The string to search for addresses. 2317 * @param caseInsensitive addr Set to true to make search ignore case. 2318 * 2319 * @return the address, or if no address is found, return null. 2320 */ 2321 public static String findAddress(String addr, boolean caseInsensitive) { 2322 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2323 } 2324 2325 /* 2326 * Clear the highlighting surrounding text matches created by findAll. 2327 */ 2328 public void clearMatches() { 2329 mFindIsUp = false; 2330 nativeSetFindIsDown(); 2331 // Now that the dialog has been removed, ensure that we scroll to a 2332 // location that is not beyond the end of the page. 2333 pinScrollTo(mScrollX, mScrollY, false, 0); 2334 invalidate(); 2335 } 2336 2337 /** 2338 * Query the document to see if it contains any image references. The 2339 * message object will be dispatched with arg1 being set to 1 if images 2340 * were found and 0 if the document does not reference any images. 2341 * @param response The message that will be dispatched with the result. 2342 */ 2343 public void documentHasImages(Message response) { 2344 if (response == null) { 2345 return; 2346 } 2347 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2348 } 2349 2350 @Override 2351 public void computeScroll() { 2352 if (mScroller.computeScrollOffset()) { 2353 int oldX = mScrollX; 2354 int oldY = mScrollY; 2355 mScrollX = mScroller.getCurrX(); 2356 mScrollY = mScroller.getCurrY(); 2357 postInvalidate(); // So we draw again 2358 if (oldX != mScrollX || oldY != mScrollY) { 2359 // as onScrollChanged() is not called, sendOurVisibleRect() 2360 // needs to be call explicitly 2361 sendOurVisibleRect(); 2362 } 2363 } else { 2364 super.computeScroll(); 2365 } 2366 } 2367 2368 private static int computeDuration(int dx, int dy) { 2369 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2370 int duration = distance * 1000 / STD_SPEED; 2371 return Math.min(duration, MAX_DURATION); 2372 } 2373 2374 // helper to pin the scrollBy parameters (already in view coordinates) 2375 // returns true if the scroll was changed 2376 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2377 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2378 } 2379 2380 // helper to pin the scrollTo parameters (already in view coordinates) 2381 // returns true if the scroll was changed 2382 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2383 x = pinLocX(x); 2384 y = pinLocY(y); 2385 int dx = x - mScrollX; 2386 int dy = y - mScrollY; 2387 2388 if ((dx | dy) == 0) { 2389 return false; 2390 } 2391 2392 if (true && animate) { 2393 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2394 2395 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2396 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2397 invalidate(); 2398 } else { 2399 abortAnimation(); // just in case 2400 scrollTo(x, y); 2401 } 2402 return true; 2403 } 2404 2405 // Scale from content to view coordinates, and pin. 2406 // Also called by jni webview.cpp 2407 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2408 if (mDrawHistory) { 2409 // disallow WebView to change the scroll position as History Picture 2410 // is used in the view system. 2411 // TODO: as we switchOutDrawHistory when trackball or navigation 2412 // keys are hit, this should be safe. Right? 2413 return false; 2414 } 2415 cx = contentToViewX(cx); 2416 cy = contentToViewY(cy); 2417 if (mHeightCanMeasure) { 2418 // move our visible rect according to scroll request 2419 if (cy != 0) { 2420 Rect tempRect = new Rect(); 2421 calcOurVisibleRect(tempRect); 2422 tempRect.offset(cx, cy); 2423 requestRectangleOnScreen(tempRect); 2424 } 2425 // FIXME: We scroll horizontally no matter what because currently 2426 // ScrollView and ListView will not scroll horizontally. 2427 // FIXME: Why do we only scroll horizontally if there is no 2428 // vertical scroll? 2429// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2430 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2431 } else { 2432 return pinScrollBy(cx, cy, animate, 0); 2433 } 2434 } 2435 2436 // scale from content to view coordinates, and pin 2437 // return true if pin caused the final x/y different than the request cx/cy; 2438 // return false if the view scroll to the exact position as it is requested. 2439 private boolean setContentScrollTo(int cx, int cy) { 2440 if (mDrawHistory) { 2441 // disallow WebView to change the scroll position as History Picture 2442 // is used in the view system. 2443 // One known case where this is called is that WebCore tries to 2444 // restore the scroll position. As history Picture already uses the 2445 // saved scroll position, it is ok to skip this. 2446 return false; 2447 } 2448 int vx = contentToViewX(cx); 2449 int vy = contentToViewY(cy); 2450// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2451// vx + " " + vy + "]"); 2452 pinScrollTo(vx, vy, false, 0); 2453 if (mScrollX != vx || mScrollY != vy) { 2454 return true; 2455 } else { 2456 return false; 2457 } 2458 } 2459 2460 // scale from content to view coordinates, and pin 2461 private void spawnContentScrollTo(int cx, int cy) { 2462 if (mDrawHistory) { 2463 // disallow WebView to change the scroll position as History Picture 2464 // is used in the view system. 2465 return; 2466 } 2467 int vx = contentToViewX(cx); 2468 int vy = contentToViewY(cy); 2469 pinScrollTo(vx, vy, true, 0); 2470 } 2471 2472 /** 2473 * These are from webkit, and are in content coordinate system (unzoomed) 2474 */ 2475 private void contentSizeChanged(boolean updateLayout) { 2476 // suppress 0,0 since we usually see real dimensions soon after 2477 // this avoids drawing the prev content in a funny place. If we find a 2478 // way to consolidate these notifications, this check may become 2479 // obsolete 2480 if ((mContentWidth | mContentHeight) == 0) { 2481 return; 2482 } 2483 2484 if (mHeightCanMeasure) { 2485 if (getMeasuredHeight() != contentToViewX(mContentHeight) 2486 && updateLayout) { 2487 requestLayout(); 2488 } 2489 } else if (mWidthCanMeasure) { 2490 if (getMeasuredWidth() != contentToViewX(mContentWidth) 2491 && updateLayout) { 2492 requestLayout(); 2493 } 2494 } else { 2495 // If we don't request a layout, try to send our view size to the 2496 // native side to ensure that WebCore has the correct dimensions. 2497 sendViewSizeZoom(); 2498 } 2499 } 2500 2501 /** 2502 * Set the WebViewClient that will receive various notifications and 2503 * requests. This will replace the current handler. 2504 * @param client An implementation of WebViewClient. 2505 */ 2506 public void setWebViewClient(WebViewClient client) { 2507 mCallbackProxy.setWebViewClient(client); 2508 } 2509 2510 /** 2511 * Register the interface to be used when content can not be handled by 2512 * the rendering engine, and should be downloaded instead. This will replace 2513 * the current handler. 2514 * @param listener An implementation of DownloadListener. 2515 */ 2516 public void setDownloadListener(DownloadListener listener) { 2517 mCallbackProxy.setDownloadListener(listener); 2518 } 2519 2520 /** 2521 * Set the chrome handler. This is an implementation of WebChromeClient for 2522 * use in handling Javascript dialogs, favicons, titles, and the progress. 2523 * This will replace the current handler. 2524 * @param client An implementation of WebChromeClient. 2525 */ 2526 public void setWebChromeClient(WebChromeClient client) { 2527 mCallbackProxy.setWebChromeClient(client); 2528 } 2529 2530 /** 2531 * Gets the chrome handler. 2532 * @return the current WebChromeClient instance. 2533 * 2534 * @hide API council approval. 2535 */ 2536 public WebChromeClient getWebChromeClient() { 2537 return mCallbackProxy.getWebChromeClient(); 2538 } 2539 2540 /** 2541 * Set the Picture listener. This is an interface used to receive 2542 * notifications of a new Picture. 2543 * @param listener An implementation of WebView.PictureListener. 2544 */ 2545 public void setPictureListener(PictureListener listener) { 2546 mPictureListener = listener; 2547 } 2548 2549 /** 2550 * {@hide} 2551 */ 2552 /* FIXME: Debug only! Remove for SDK! */ 2553 public void externalRepresentation(Message callback) { 2554 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2555 } 2556 2557 /** 2558 * {@hide} 2559 */ 2560 /* FIXME: Debug only! Remove for SDK! */ 2561 public void documentAsText(Message callback) { 2562 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2563 } 2564 2565 /** 2566 * Use this function to bind an object to Javascript so that the 2567 * methods can be accessed from Javascript. 2568 * <p><strong>IMPORTANT:</strong> 2569 * <ul> 2570 * <li> Using addJavascriptInterface() allows JavaScript to control your 2571 * application. This can be a very useful feature or a dangerous security 2572 * issue. When the HTML in the WebView is untrustworthy (for example, part 2573 * or all of the HTML is provided by some person or process), then an 2574 * attacker could inject HTML that will execute your code and possibly any 2575 * code of the attacker's choosing.<br> 2576 * Do not use addJavascriptInterface() unless all of the HTML in this 2577 * WebView was written by you.</li> 2578 * <li> The Java object that is bound runs in another thread and not in 2579 * the thread that it was constructed in.</li> 2580 * </ul></p> 2581 * @param obj The class instance to bind to Javascript 2582 * @param interfaceName The name to used to expose the class in Javascript 2583 */ 2584 public void addJavascriptInterface(Object obj, String interfaceName) { 2585 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2586 arg.mObject = obj; 2587 arg.mInterfaceName = interfaceName; 2588 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2589 } 2590 2591 /** 2592 * Return the WebSettings object used to control the settings for this 2593 * WebView. 2594 * @return A WebSettings object that can be used to control this WebView's 2595 * settings. 2596 */ 2597 public WebSettings getSettings() { 2598 return mWebViewCore.getSettings(); 2599 } 2600 2601 /** 2602 * Return the list of currently loaded plugins. 2603 * @return The list of currently loaded plugins. 2604 * 2605 * @deprecated This was used for Gears, which has been deprecated. 2606 */ 2607 @Deprecated 2608 public static synchronized PluginList getPluginList() { 2609 return null; 2610 } 2611 2612 /** 2613 * @deprecated This was used for Gears, which has been deprecated. 2614 */ 2615 @Deprecated 2616 public void refreshPlugins(boolean reloadOpenPages) { } 2617 2618 //------------------------------------------------------------------------- 2619 // Override View methods 2620 //------------------------------------------------------------------------- 2621 2622 @Override 2623 protected void finalize() throws Throwable { 2624 try { 2625 destroy(); 2626 } finally { 2627 super.finalize(); 2628 } 2629 } 2630 2631 @Override 2632 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 2633 if (child == mTitleBar) { 2634 // When drawing the title bar, move it horizontally to always show 2635 // at the top of the WebView. 2636 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 2637 } 2638 return super.drawChild(canvas, child, drawingTime); 2639 } 2640 2641 @Override 2642 protected void onDraw(Canvas canvas) { 2643 int saveCount = canvas.getSaveCount(); 2644 if (mTitleBar != null) { 2645 canvas.save(); 2646 canvas.translate(0, (int) mTitleBar.getHeight()); 2647 } 2648 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2649 if (mNativeClass == 0) { 2650 return; 2651 } 2652 if (mWebViewCore.mEndScaleZoom) { 2653 mWebViewCore.mEndScaleZoom = false; 2654 if (mTouchMode >= FIRST_SCROLL_ZOOM 2655 && mTouchMode <= LAST_SCROLL_ZOOM) { 2656 setHorizontalScrollBarEnabled(true); 2657 setVerticalScrollBarEnabled(true); 2658 mTouchMode = TOUCH_DONE_MODE; 2659 } 2660 } 2661 canvas.save(); 2662 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 2663 scrollZoomDraw(canvas); 2664 } else { 2665 // Update the buttons in the picture, so when we draw the picture 2666 // to the screen, they are in the correct state. 2667 // Tell the native side if user is a) touching the screen, 2668 // b) pressing the trackball down, or c) pressing the enter key 2669 // If the cursor is on a button, we need to draw it in the pressed 2670 // state. 2671 // If mNativeClass is 0, we should not reach here, so we do not 2672 // need to check it again. 2673 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2674 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2675 || mTrackballDown || mGotCenterDown, false); 2676 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2677 } 2678 canvas.restoreToCount(saveCount); 2679 2680 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2681 invalidate(); 2682 } 2683 } 2684 2685 @Override 2686 public void setLayoutParams(ViewGroup.LayoutParams params) { 2687 if (params.height == LayoutParams.WRAP_CONTENT) { 2688 mWrapContent = true; 2689 } 2690 super.setLayoutParams(params); 2691 } 2692 2693 @Override 2694 public boolean performLongClick() { 2695 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 2696 // Send the click so that the textfield is in focus 2697 // FIXME: When we start respecting changes to the native textfield's 2698 // selection, need to make sure that this does not change it. 2699 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 2700 nativeCursorNodePointer()); 2701 rebuildWebTextView(); 2702 } 2703 if (inEditingMode()) { 2704 return mWebTextView.performLongClick(); 2705 } else { 2706 return super.performLongClick(); 2707 } 2708 } 2709 2710 private void drawCoreAndCursorRing(Canvas canvas, int color, 2711 boolean drawCursorRing) { 2712 if (mDrawHistory) { 2713 canvas.scale(mActualScale, mActualScale); 2714 canvas.drawPicture(mHistoryPicture); 2715 return; 2716 } 2717 2718 boolean animateZoom = mZoomScale != 0; 2719 boolean animateScroll = !mScroller.isFinished() 2720 || mVelocityTracker != null; 2721 if (animateZoom) { 2722 float zoomScale; 2723 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 2724 if (interval < ZOOM_ANIMATION_LENGTH) { 2725 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 2726 zoomScale = 1.0f / (mInvInitialZoomScale 2727 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 2728 invalidate(); 2729 } else { 2730 zoomScale = mZoomScale; 2731 // set mZoomScale to be 0 as we have done animation 2732 mZoomScale = 0; 2733 } 2734 float scale = zoomScale * mInvInitialZoomScale; 2735 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 2736 - mZoomCenterX); 2737 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 2738 * zoomScale)) + mScrollX; 2739 int ty = Math.round(scale * (mInitialScrollY + mZoomCenterY) 2740 - mZoomCenterY); 2741 ty = -pinLoc(ty, getViewHeight(), Math.round(mContentHeight 2742 * zoomScale)) + mScrollY; 2743 canvas.translate(tx, ty); 2744 canvas.scale(zoomScale, zoomScale); 2745 } else { 2746 canvas.scale(mActualScale, mActualScale); 2747 } 2748 2749 mWebViewCore.drawContentPicture(canvas, color, animateZoom, 2750 animateScroll); 2751 2752 if (mNativeClass == 0) return; 2753 if (mShiftIsPressed) { 2754 if (mTouchSelection) { 2755 nativeDrawSelectionRegion(canvas); 2756 } else { 2757 nativeDrawSelection(canvas, mSelectX, mSelectY, 2758 mExtendSelection); 2759 } 2760 } else if (drawCursorRing) { 2761 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 2762 mTouchMode = TOUCH_SHORTPRESS_MODE; 2763 HitTestResult hitTest = getHitTestResult(); 2764 if (hitTest != null && 2765 hitTest.mType != HitTestResult.UNKNOWN_TYPE) { 2766 mPrivateHandler.sendMessageDelayed(mPrivateHandler 2767 .obtainMessage(SWITCH_TO_LONGPRESS), 2768 LONG_PRESS_TIMEOUT); 2769 } 2770 } 2771 nativeDrawCursorRing(canvas); 2772 } 2773 // When the FindDialog is up, only draw the matches if we are not in 2774 // the process of scrolling them into view. 2775 if (mFindIsUp && !animateScroll) { 2776 nativeDrawMatches(canvas); 2777 } 2778 } 2779 2780 private float scrollZoomGridScale(float invScale) { 2781 float griddedInvScale = (int) (invScale * SCROLL_ZOOM_GRID) 2782 / (float) SCROLL_ZOOM_GRID; 2783 return 1.0f / griddedInvScale; 2784 } 2785 2786 private float scrollZoomX(float scale) { 2787 int width = getViewWidth(); 2788 float maxScrollZoomX = mContentWidth * scale - width; 2789 int maxX = mContentWidth - width; 2790 return -(maxScrollZoomX > 0 ? mZoomScrollX * maxScrollZoomX / maxX 2791 : maxScrollZoomX / 2); 2792 } 2793 2794 private float scrollZoomY(float scale) { 2795 int height = getViewHeight(); 2796 float maxScrollZoomY = mContentHeight * scale - height; 2797 int maxY = mContentHeight - height; 2798 return -(maxScrollZoomY > 0 ? mZoomScrollY * maxScrollZoomY / maxY 2799 : maxScrollZoomY / 2); 2800 } 2801 2802 private void drawMagnifyFrame(Canvas canvas, Rect frame, Paint paint) { 2803 final float ADORNMENT_LEN = 16.0f; 2804 float width = frame.width(); 2805 float height = frame.height(); 2806 Path path = new Path(); 2807 path.moveTo(-ADORNMENT_LEN, -ADORNMENT_LEN); 2808 path.lineTo(0, 0); 2809 path.lineTo(width, 0); 2810 path.lineTo(width + ADORNMENT_LEN, -ADORNMENT_LEN); 2811 path.moveTo(-ADORNMENT_LEN, height + ADORNMENT_LEN); 2812 path.lineTo(0, height); 2813 path.lineTo(width, height); 2814 path.lineTo(width + ADORNMENT_LEN, height + ADORNMENT_LEN); 2815 path.moveTo(0, 0); 2816 path.lineTo(0, height); 2817 path.moveTo(width, 0); 2818 path.lineTo(width, height); 2819 path.offset(frame.left, frame.top); 2820 canvas.drawPath(path, paint); 2821 } 2822 2823 // Returns frame surrounding magified portion of screen while 2824 // scroll-zoom is enabled. The frame is also used to center the 2825 // zoom-in zoom-out points at the start and end of the animation. 2826 private Rect scrollZoomFrame(int width, int height, float halfScale) { 2827 Rect scrollFrame = new Rect(); 2828 scrollFrame.set(mZoomScrollX, mZoomScrollY, 2829 mZoomScrollX + width, mZoomScrollY + height); 2830 if (mContentWidth * mZoomScrollLimit < width) { 2831 float scale = zoomFrameScaleX(width, halfScale, 1.0f); 2832 float offsetX = (width * scale - width) * 0.5f; 2833 scrollFrame.left -= offsetX; 2834 scrollFrame.right += offsetX; 2835 } 2836 if (mContentHeight * mZoomScrollLimit < height) { 2837 float scale = zoomFrameScaleY(height, halfScale, 1.0f); 2838 float offsetY = (height * scale - height) * 0.5f; 2839 scrollFrame.top -= offsetY; 2840 scrollFrame.bottom += offsetY; 2841 } 2842 return scrollFrame; 2843 } 2844 2845 private float zoomFrameScaleX(int width, float halfScale, float noScale) { 2846 // mContentWidth > width > mContentWidth * mZoomScrollLimit 2847 if (mContentWidth <= width) { 2848 return halfScale; 2849 } 2850 float part = (width - mContentWidth * mZoomScrollLimit) 2851 / (width * (1 - mZoomScrollLimit)); 2852 return halfScale * part + noScale * (1.0f - part); 2853 } 2854 2855 private float zoomFrameScaleY(int height, float halfScale, float noScale) { 2856 if (mContentHeight <= height) { 2857 return halfScale; 2858 } 2859 float part = (height - mContentHeight * mZoomScrollLimit) 2860 / (height * (1 - mZoomScrollLimit)); 2861 return halfScale * part + noScale * (1.0f - part); 2862 } 2863 2864 private float scrollZoomMagScale(float invScale) { 2865 return (invScale * 2 + mInvActualScale) / 3; 2866 } 2867 2868 private void scrollZoomDraw(Canvas canvas) { 2869 float invScale = mZoomScrollInvLimit; 2870 int elapsed = 0; 2871 if (mTouchMode != SCROLL_ZOOM_OUT) { 2872 elapsed = (int) Math.min(System.currentTimeMillis() 2873 - mZoomScrollStart, SCROLL_ZOOM_DURATION); 2874 float transitionScale = (mZoomScrollInvLimit - mInvActualScale) 2875 * elapsed / SCROLL_ZOOM_DURATION; 2876 if (mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 2877 invScale = mInvActualScale + transitionScale; 2878 } else { /* if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) */ 2879 invScale = mZoomScrollInvLimit - transitionScale; 2880 } 2881 } 2882 float scale = scrollZoomGridScale(invScale); 2883 invScale = 1.0f / scale; 2884 int width = getViewWidth(); 2885 int height = getViewHeight(); 2886 float halfScale = scrollZoomMagScale(invScale); 2887 Rect scrollFrame = scrollZoomFrame(width, height, halfScale); 2888 if (elapsed == SCROLL_ZOOM_DURATION) { 2889 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 2890 setHorizontalScrollBarEnabled(true); 2891 setVerticalScrollBarEnabled(true); 2892 rebuildWebTextView(); 2893 scrollTo((int) (scrollFrame.centerX() * mActualScale) 2894 - (width >> 1), (int) (scrollFrame.centerY() 2895 * mActualScale) - (height >> 1)); 2896 mTouchMode = TOUCH_DONE_MODE; 2897 // Show all the child views once we are done. 2898 mViewManager.showAll(); 2899 } else { 2900 mTouchMode = SCROLL_ZOOM_OUT; 2901 } 2902 } 2903 float newX = scrollZoomX(scale); 2904 float newY = scrollZoomY(scale); 2905 if (DebugFlags.WEB_VIEW) { 2906 Log.v(LOGTAG, "scrollZoomDraw scale=" + scale + " + (" + newX 2907 + ", " + newY + ") mZoomScroll=(" + mZoomScrollX + ", " 2908 + mZoomScrollY + ")" + " invScale=" + invScale + " scale=" 2909 + scale); 2910 } 2911 canvas.translate(newX, newY); 2912 canvas.scale(scale, scale); 2913 boolean animating = mTouchMode != SCROLL_ZOOM_OUT; 2914 if (mDrawHistory) { 2915 int sc = canvas.save(Canvas.CLIP_SAVE_FLAG); 2916 Rect clip = new Rect(0, 0, mHistoryPicture.getWidth(), 2917 mHistoryPicture.getHeight()); 2918 canvas.clipRect(clip, Region.Op.DIFFERENCE); 2919 canvas.drawColor(mBackgroundColor); 2920 canvas.restoreToCount(sc); 2921 canvas.drawPicture(mHistoryPicture); 2922 } else { 2923 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2924 animating, true); 2925 } 2926 if (mTouchMode == TOUCH_DONE_MODE) { 2927 return; 2928 } 2929 Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); 2930 paint.setStyle(Paint.Style.STROKE); 2931 paint.setStrokeWidth(30.0f); 2932 paint.setARGB(0x50, 0, 0, 0); 2933 int maxX = mContentWidth - width; 2934 int maxY = mContentHeight - height; 2935 if (true) { // experiment: draw hint to place finger off magnify area 2936 drawMagnifyFrame(canvas, scrollFrame, paint); 2937 } else { 2938 canvas.drawRect(scrollFrame, paint); 2939 } 2940 int sc = canvas.save(); 2941 canvas.clipRect(scrollFrame); 2942 float halfX = (float) mZoomScrollX / maxX; 2943 if (mContentWidth * mZoomScrollLimit < width) { 2944 halfX = zoomFrameScaleX(width, 0.5f, halfX); 2945 } 2946 float halfY = (float) mZoomScrollY / maxY; 2947 if (mContentHeight * mZoomScrollLimit < height) { 2948 halfY = zoomFrameScaleY(height, 0.5f, halfY); 2949 } 2950 canvas.scale(halfScale, halfScale, mZoomScrollX + width * halfX 2951 , mZoomScrollY + height * halfY); 2952 if (DebugFlags.WEB_VIEW) { 2953 Log.v(LOGTAG, "scrollZoomDraw halfScale=" + halfScale + " w/h=(" 2954 + width + ", " + height + ") half=(" + halfX + ", " 2955 + halfY + ")"); 2956 } 2957 if (mDrawHistory) { 2958 canvas.drawPicture(mHistoryPicture); 2959 } else { 2960 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2961 animating, false); 2962 } 2963 canvas.restoreToCount(sc); 2964 if (mTouchMode != SCROLL_ZOOM_OUT) { 2965 invalidate(); 2966 } 2967 } 2968 2969 private void zoomScrollTap(float x, float y) { 2970 float scale = scrollZoomGridScale(mZoomScrollInvLimit); 2971 float left = scrollZoomX(scale); 2972 float top = scrollZoomY(scale); 2973 int width = getViewWidth(); 2974 int height = getViewHeight(); 2975 x -= width * scale / 2; 2976 y -= height * scale / 2; 2977 mZoomScrollX = Math.min(mContentWidth - width 2978 , Math.max(0, (int) ((x - left) / scale))); 2979 mZoomScrollY = Math.min(mContentHeight - height 2980 , Math.max(0, (int) ((y - top) / scale))); 2981 if (DebugFlags.WEB_VIEW) { 2982 Log.v(LOGTAG, "zoomScrollTap scale=" + scale + " + (" + left 2983 + ", " + top + ") mZoomScroll=(" + mZoomScrollX + ", " 2984 + mZoomScrollY + ")" + " x=" + x + " y=" + y); 2985 } 2986 } 2987 2988 /** 2989 * @hide 2990 */ 2991 public boolean canZoomScrollOut() { 2992 if (mContentWidth == 0 || mContentHeight == 0) { 2993 return false; 2994 } 2995 int width = getViewWidth(); 2996 int height = getViewHeight(); 2997 float x = (float) width / (float) mContentWidth; 2998 float y = (float) height / (float) mContentHeight; 2999 mZoomScrollLimit = Math.max(DEFAULT_MIN_ZOOM_SCALE, Math.min(x, y)); 3000 mZoomScrollInvLimit = 1.0f / mZoomScrollLimit; 3001 if (DebugFlags.WEB_VIEW) { 3002 Log.v(LOGTAG, "canZoomScrollOut" 3003 + " mInvActualScale=" + mInvActualScale 3004 + " mZoomScrollLimit=" + mZoomScrollLimit 3005 + " mZoomScrollInvLimit=" + mZoomScrollInvLimit 3006 + " mContentWidth=" + mContentWidth 3007 + " mContentHeight=" + mContentHeight 3008 ); 3009 } 3010 // don't zoom out unless magnify area is at least half as wide 3011 // or tall as content 3012 float limit = mZoomScrollLimit * 2; 3013 return mContentWidth >= width * limit 3014 || mContentHeight >= height * limit; 3015 } 3016 3017 private void startZoomScrollOut() { 3018 setHorizontalScrollBarEnabled(false); 3019 setVerticalScrollBarEnabled(false); 3020 if (getSettings().getBuiltInZoomControls()) { 3021 if (mZoomButtonsController.isVisible()) { 3022 mZoomButtonsController.setVisible(false); 3023 } 3024 } else { 3025 if (mZoomControlRunnable != null) { 3026 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 3027 } 3028 if (mZoomControls != null) { 3029 mZoomControls.hide(); 3030 } 3031 } 3032 int width = getViewWidth(); 3033 int height = getViewHeight(); 3034 int halfW = width >> 1; 3035 mLastTouchX = halfW; 3036 int halfH = height >> 1; 3037 mLastTouchY = halfH; 3038 abortAnimation(); 3039 mZoomScrollStart = System.currentTimeMillis(); 3040 Rect zoomFrame = scrollZoomFrame(width, height 3041 , scrollZoomMagScale(mZoomScrollInvLimit)); 3042 mZoomScrollX = Math.max(0, (int) ((mScrollX + halfW) * mInvActualScale) 3043 - (zoomFrame.width() >> 1)); 3044 mZoomScrollY = Math.max(0, (int) ((mScrollY + halfH) * mInvActualScale) 3045 - (zoomFrame.height() >> 1)); 3046 scrollTo(0, 0); // triggers inval, starts animation 3047 clearTextEntry(); 3048 if (DebugFlags.WEB_VIEW) { 3049 Log.v(LOGTAG, "startZoomScrollOut mZoomScroll=(" 3050 + mZoomScrollX + ", " + mZoomScrollY +")"); 3051 } 3052 } 3053 3054 /** 3055 * @hide 3056 */ 3057 public void zoomScrollOut() { 3058 if (canZoomScrollOut() == false) { 3059 mTouchMode = TOUCH_DONE_MODE; 3060 return; 3061 } 3062 // Hide the child views while in this mode. 3063 mViewManager.hideAll(); 3064 startZoomScrollOut(); 3065 mTouchMode = SCROLL_ZOOM_ANIMATION_OUT; 3066 invalidate(); 3067 } 3068 3069 private void moveZoomScrollWindow(float x, float y) { 3070 if (Math.abs(x - mLastZoomScrollRawX) < 1.5f 3071 && Math.abs(y - mLastZoomScrollRawY) < 1.5f) { 3072 return; 3073 } 3074 mLastZoomScrollRawX = x; 3075 mLastZoomScrollRawY = y; 3076 int oldX = mZoomScrollX; 3077 int oldY = mZoomScrollY; 3078 int width = getViewWidth(); 3079 int height = getViewHeight(); 3080 int maxZoomX = mContentWidth - width; 3081 if (maxZoomX > 0) { 3082 int maxScreenX = width - (int) Math.ceil(width 3083 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 3084 if (DebugFlags.WEB_VIEW) { 3085 Log.v(LOGTAG, "moveZoomScrollWindow-X" 3086 + " maxScreenX=" + maxScreenX + " width=" + width 3087 + " mZoomScrollLimit=" + mZoomScrollLimit + " x=" + x); 3088 } 3089 x += maxScreenX * mLastScrollX / maxZoomX - mLastTouchX; 3090 x *= Math.max(maxZoomX / maxScreenX, mZoomScrollInvLimit); 3091 mZoomScrollX = Math.max(0, Math.min(maxZoomX, (int) x)); 3092 } 3093 int maxZoomY = mContentHeight - height; 3094 if (maxZoomY > 0) { 3095 int maxScreenY = height - (int) Math.ceil(height 3096 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 3097 if (DebugFlags.WEB_VIEW) { 3098 Log.v(LOGTAG, "moveZoomScrollWindow-Y" 3099 + " maxScreenY=" + maxScreenY + " height=" + height 3100 + " mZoomScrollLimit=" + mZoomScrollLimit + " y=" + y); 3101 } 3102 y += maxScreenY * mLastScrollY / maxZoomY - mLastTouchY; 3103 y *= Math.max(maxZoomY / maxScreenY, mZoomScrollInvLimit); 3104 mZoomScrollY = Math.max(0, Math.min(maxZoomY, (int) y)); 3105 } 3106 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 3107 invalidate(); 3108 } 3109 if (DebugFlags.WEB_VIEW) { 3110 Log.v(LOGTAG, "moveZoomScrollWindow" 3111 + " scrollTo=(" + mZoomScrollX + ", " + mZoomScrollY + ")" 3112 + " mLastTouch=(" + mLastTouchX + ", " + mLastTouchY + ")" 3113 + " maxZoom=(" + maxZoomX + ", " + maxZoomY + ")" 3114 + " last=("+mLastScrollX+", "+mLastScrollY+")" 3115 + " x=" + x + " y=" + y); 3116 } 3117 } 3118 3119 private void setZoomScrollIn() { 3120 mZoomScrollStart = System.currentTimeMillis(); 3121 } 3122 3123 private float mZoomScrollLimit; 3124 private float mZoomScrollInvLimit; 3125 private int mLastScrollX; 3126 private int mLastScrollY; 3127 private long mZoomScrollStart; 3128 private int mZoomScrollX; 3129 private int mZoomScrollY; 3130 private float mLastZoomScrollRawX = -1000.0f; 3131 private float mLastZoomScrollRawY = -1000.0f; 3132 // The zoomed scale varies from 1.0 to DEFAULT_MIN_ZOOM_SCALE == 0.25. 3133 // The zoom animation duration SCROLL_ZOOM_DURATION == 0.5. 3134 // Two pressures compete for gridding; a high frame rate (e.g. 20 fps) 3135 // and minimizing font cache allocations (fewer frames is better). 3136 // A SCROLL_ZOOM_GRID of 6 permits about 20 zoom levels over 0.5 seconds: 3137 // the inverse of: 1.0, 1.16, 1.33, 1.5, 1.67, 1.84, 2.0, etc. to 4.0 3138 private static final int SCROLL_ZOOM_GRID = 6; 3139 private static final int SCROLL_ZOOM_DURATION = 500; 3140 // Make it easier to get to the bottom of a document by reserving a 32 3141 // pixel buffer, for when the starting drag is a bit below the bottom of 3142 // the magnify frame. 3143 private static final int SCROLL_ZOOM_FINGER_BUFFER = 32; 3144 3145 // draw history 3146 private boolean mDrawHistory = false; 3147 private Picture mHistoryPicture = null; 3148 private int mHistoryWidth = 0; 3149 private int mHistoryHeight = 0; 3150 3151 // Only check the flag, can be called from WebCore thread 3152 boolean drawHistory() { 3153 return mDrawHistory; 3154 } 3155 3156 // Should only be called in UI thread 3157 void switchOutDrawHistory() { 3158 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3159 if (mDrawHistory && mWebViewCore.pictureReady()) { 3160 mDrawHistory = false; 3161 invalidate(); 3162 int oldScrollX = mScrollX; 3163 int oldScrollY = mScrollY; 3164 mScrollX = pinLocX(mScrollX); 3165 mScrollY = pinLocY(mScrollY); 3166 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3167 mUserScroll = false; 3168 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3169 oldScrollY); 3170 } 3171 sendOurVisibleRect(); 3172 } 3173 } 3174 3175 WebViewCore.CursorData cursorData() { 3176 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3177 result.mMoveGeneration = nativeMoveGeneration(); 3178 result.mFrame = nativeCursorFramePointer(); 3179 Point position = nativeCursorPosition(); 3180 result.mX = position.x; 3181 result.mY = position.y; 3182 return result; 3183 } 3184 3185 /** 3186 * Delete text from start to end in the focused textfield. If there is no 3187 * focus, or if start == end, silently fail. If start and end are out of 3188 * order, swap them. 3189 * @param start Beginning of selection to delete. 3190 * @param end End of selection to delete. 3191 */ 3192 /* package */ void deleteSelection(int start, int end) { 3193 mTextGeneration++; 3194 WebViewCore.TextSelectionData data 3195 = new WebViewCore.TextSelectionData(start, end); 3196 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3197 data); 3198 } 3199 3200 /** 3201 * Set the selection to (start, end) in the focused textfield. If start and 3202 * end are out of order, swap them. 3203 * @param start Beginning of selection. 3204 * @param end End of selection. 3205 */ 3206 /* package */ void setSelection(int start, int end) { 3207 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3208 } 3209 3210 // Called by JNI when a touch event puts a textfield into focus. 3211 private void displaySoftKeyboard(boolean isTextView) { 3212 InputMethodManager imm = (InputMethodManager) 3213 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3214 3215 if (isTextView) { 3216 imm.showSoftInput(mWebTextView, 0); 3217 // Now we need to fake a touch event to place the cursor where the 3218 // user touched. 3219 AbsoluteLayout.LayoutParams lp = (AbsoluteLayout.LayoutParams) 3220 mWebTextView.getLayoutParams(); 3221 if (lp != null) { 3222 // Take the last touch and adjust for the location of the 3223 // WebTextView. 3224 float x = mLastTouchX + (float) (mScrollX - lp.x); 3225 float y = mLastTouchY + (float) (mScrollY - lp.y); 3226 mWebTextView.fakeTouchEvent(x, y); 3227 } 3228 if (mInZoomOverview) { 3229 // if in zoom overview mode, call doDoubleTap() to bring it back 3230 // to normal mode so that user can enter text. 3231 doDoubleTap(); 3232 } 3233 } 3234 else { // used by plugins 3235 imm.showSoftInput(this, 0); 3236 } 3237 } 3238 3239 // Called by WebKit to instruct the UI to hide the keyboard 3240 private void hideSoftKeyboard() { 3241 InputMethodManager imm = (InputMethodManager) 3242 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3243 3244 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3245 } 3246 3247 /* 3248 * This method checks the current focus and cursor and potentially rebuilds 3249 * mWebTextView to have the appropriate properties, such as password, 3250 * multiline, and what text it contains. It also removes it if necessary. 3251 */ 3252 /* package */ void rebuildWebTextView() { 3253 // If the WebView does not have focus, do nothing until it gains focus. 3254 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus()) 3255 || (mTouchMode >= FIRST_SCROLL_ZOOM 3256 && mTouchMode <= LAST_SCROLL_ZOOM)) { 3257 return; 3258 } 3259 boolean alreadyThere = inEditingMode(); 3260 // inEditingMode can only return true if mWebTextView is non-null, 3261 // so we can safely call remove() if (alreadyThere) 3262 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3263 if (alreadyThere) { 3264 mWebTextView.remove(); 3265 } 3266 return; 3267 } 3268 // At this point, we know we have found an input field, so go ahead 3269 // and create the WebTextView if necessary. 3270 if (mWebTextView == null) { 3271 mWebTextView = new WebTextView(mContext, WebView.this); 3272 // Initialize our generation number. 3273 mTextGeneration = 0; 3274 } 3275 mWebTextView.setTextSize(contentToViewX(nativeFocusCandidateTextSize())); 3276 Rect visibleRect = new Rect(); 3277 calcOurContentVisibleRect(visibleRect); 3278 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3279 // should be in content coordinates. 3280 Rect bounds = nativeFocusCandidateNodeBounds(); 3281 if (!Rect.intersects(bounds, visibleRect)) { 3282 mWebTextView.bringIntoView(); 3283 } 3284 String text = nativeFocusCandidateText(); 3285 int nodePointer = nativeFocusCandidatePointer(); 3286 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3287 // It is possible that we have the same textfield, but it has moved, 3288 // i.e. In the case of opening/closing the screen. 3289 // In that case, we need to set the dimensions, but not the other 3290 // aspects. 3291 // We also need to restore the selection, which gets wrecked by 3292 // calling setTextEntryRect. 3293 Spannable spannable = (Spannable) mWebTextView.getText(); 3294 int start = Selection.getSelectionStart(spannable); 3295 int end = Selection.getSelectionEnd(spannable); 3296 // If the text has been changed by webkit, update it. However, if 3297 // there has been more UI text input, ignore it. We will receive 3298 // another update when that text is recognized. 3299 if (text != null && !text.equals(spannable.toString()) 3300 && nativeTextGeneration() == mTextGeneration) { 3301 mWebTextView.setTextAndKeepSelection(text); 3302 } else { 3303 Selection.setSelection(spannable, start, end); 3304 } 3305 } else { 3306 Rect vBox = contentToView(bounds); 3307 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3308 vBox.height()); 3309 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3310 Gravity.RIGHT : Gravity.NO_GRAVITY); 3311 // this needs to be called before update adapter thread starts to 3312 // ensure the mWebTextView has the same node pointer 3313 mWebTextView.setNodePointer(nodePointer); 3314 int maxLength = -1; 3315 boolean isTextField = nativeFocusCandidateIsTextField(); 3316 if (isTextField) { 3317 maxLength = nativeFocusCandidateMaxLength(); 3318 String name = nativeFocusCandidateName(); 3319 if (mWebViewCore.getSettings().getSaveFormData() 3320 && name != null) { 3321 Message update = mPrivateHandler.obtainMessage( 3322 REQUEST_FORM_DATA, nodePointer); 3323 RequestFormData updater = new RequestFormData(name, 3324 getUrl(), update); 3325 Thread t = new Thread(updater); 3326 t.start(); 3327 } 3328 } 3329 mWebTextView.setMaxLength(maxLength); 3330 AutoCompleteAdapter adapter = null; 3331 mWebTextView.setAdapterCustom(adapter); 3332 mWebTextView.setSingleLine(isTextField); 3333 mWebTextView.setInPassword(nativeFocusCandidateIsPassword()); 3334 if (null == text) { 3335 mWebTextView.setText("", 0, 0); 3336 if (DebugFlags.WEB_VIEW) { 3337 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3338 } 3339 } else { 3340 // Change to true to enable the old style behavior, where 3341 // entering a textfield/textarea always set the selection to the 3342 // whole field. This was desirable for the case where the user 3343 // intends to scroll past the field using the trackball. 3344 // However, it causes a problem when replying to emails - the 3345 // user expects the cursor to be at the beginning of the 3346 // textarea. Testing out a new behavior, where textfields set 3347 // selection at the end, and textareas at the beginning. 3348 if (false) { 3349 mWebTextView.setText(text, 0, text.length()); 3350 } else if (isTextField) { 3351 int length = text.length(); 3352 mWebTextView.setText(text, length, length); 3353 if (DebugFlags.WEB_VIEW) { 3354 Log.v(LOGTAG, "rebuildWebTextView length=" + length); 3355 } 3356 } else { 3357 mWebTextView.setText(text, 0, 0); 3358 if (DebugFlags.WEB_VIEW) { 3359 Log.v(LOGTAG, "rebuildWebTextView !isTextField"); 3360 } 3361 } 3362 } 3363 mWebTextView.requestFocus(); 3364 } 3365 } 3366 3367 /* 3368 * This class requests an Adapter for the WebTextView which shows past 3369 * entries stored in the database. It is a Runnable so that it can be done 3370 * in its own thread, without slowing down the UI. 3371 */ 3372 private class RequestFormData implements Runnable { 3373 private String mName; 3374 private String mUrl; 3375 private Message mUpdateMessage; 3376 3377 public RequestFormData(String name, String url, Message msg) { 3378 mName = name; 3379 mUrl = url; 3380 mUpdateMessage = msg; 3381 } 3382 3383 public void run() { 3384 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3385 if (pastEntries.size() > 0) { 3386 AutoCompleteAdapter adapter = new 3387 AutoCompleteAdapter(mContext, pastEntries); 3388 mUpdateMessage.obj = adapter; 3389 mUpdateMessage.sendToTarget(); 3390 } 3391 } 3392 } 3393 3394 // This is used to determine long press with the center key. Does not 3395 // affect long press with the trackball/touch. 3396 private boolean mGotCenterDown = false; 3397 3398 @Override 3399 public boolean onKeyDown(int keyCode, KeyEvent event) { 3400 if (DebugFlags.WEB_VIEW) { 3401 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3402 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3403 } 3404 3405 if (mNativeClass == 0) { 3406 return false; 3407 } 3408 3409 // do this hack up front, so it always works, regardless of touch-mode 3410 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3411 mAutoRedraw = !mAutoRedraw; 3412 if (mAutoRedraw) { 3413 invalidate(); 3414 } 3415 return true; 3416 } 3417 3418 // Bubble up the key event if 3419 // 1. it is a system key; or 3420 // 2. the host application wants to handle it; or 3421 // 3. webview is in scroll-zoom state; 3422 if (event.isSystem() 3423 || mCallbackProxy.uiOverrideKeyEvent(event) 3424 || (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM)) { 3425 return false; 3426 } 3427 3428 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3429 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3430 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3431 mExtendSelection = false; 3432 mShiftIsPressed = true; 3433 if (nativeHasCursorNode()) { 3434 Rect rect = nativeCursorNodeBounds(); 3435 mSelectX = contentToViewX(rect.left); 3436 mSelectY = contentToViewY(rect.top); 3437 } else { 3438 mSelectX = mScrollX + (int) mLastTouchX; 3439 mSelectY = mScrollY + (int) mLastTouchY; 3440 } 3441 nativeHideCursor(); 3442 } 3443 3444 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3445 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3446 // always handle the navigation keys in the UI thread 3447 switchOutDrawHistory(); 3448 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3449 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3450 return true; 3451 } 3452 // Bubble up the key event as WebView doesn't handle it 3453 return false; 3454 } 3455 3456 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3457 switchOutDrawHistory(); 3458 if (event.getRepeatCount() == 0) { 3459 mGotCenterDown = true; 3460 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3461 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3462 // Already checked mNativeClass, so we do not need to check it 3463 // again. 3464 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3465 return true; 3466 } 3467 // Bubble up the key event as WebView doesn't handle it 3468 return false; 3469 } 3470 3471 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3472 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3473 // turn off copy select if a shift-key combo is pressed 3474 mExtendSelection = mShiftIsPressed = false; 3475 if (mTouchMode == TOUCH_SELECT_MODE) { 3476 mTouchMode = TOUCH_INIT_MODE; 3477 } 3478 } 3479 3480 if (getSettings().getNavDump()) { 3481 switch (keyCode) { 3482 case KeyEvent.KEYCODE_4: 3483 // "/data/data/com.android.browser/displayTree.txt" 3484 nativeDumpDisplayTree(getUrl()); 3485 break; 3486 case KeyEvent.KEYCODE_5: 3487 case KeyEvent.KEYCODE_6: 3488 // 5: dump the dom tree to the file 3489 // "/data/data/com.android.browser/domTree.txt" 3490 // 6: dump the dom tree to the adb log 3491 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, 3492 (keyCode == KeyEvent.KEYCODE_5) ? 1 : 0, 0); 3493 break; 3494 case KeyEvent.KEYCODE_7: 3495 case KeyEvent.KEYCODE_8: 3496 // 7: dump the render tree to the file 3497 // "/data/data/com.android.browser/renderTree.txt" 3498 // 8: dump the render tree to the adb log 3499 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, 3500 (keyCode == KeyEvent.KEYCODE_7) ? 1 : 0, 0); 3501 break; 3502 case KeyEvent.KEYCODE_9: 3503 nativeInstrumentReport(); 3504 return true; 3505 } 3506 } 3507 3508 if (nativeCursorIsPlugin()) { 3509 nativeUpdatePluginReceivesEvents(); 3510 invalidate(); 3511 } else if (nativeCursorIsTextInput()) { 3512 // This message will put the node in focus, for the DOM's notion 3513 // of focus, and make the focuscontroller active 3514 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3515 nativeCursorNodePointer()); 3516 // This will bring up the WebTextView and put it in focus, for 3517 // our view system's notion of focus 3518 rebuildWebTextView(); 3519 // Now we need to pass the event to it 3520 return mWebTextView.onKeyDown(keyCode, event); 3521 } else if (nativeHasFocusNode()) { 3522 // In this case, the cursor is not on a text input, but the focus 3523 // might be. Check it, and if so, hand over to the WebTextView. 3524 rebuildWebTextView(); 3525 if (inEditingMode()) { 3526 return mWebTextView.onKeyDown(keyCode, event); 3527 } 3528 } 3529 3530 // TODO: should we pass all the keys to DOM or check the meta tag 3531 if (nativeCursorWantsKeyEvents() || true) { 3532 // pass the key to DOM 3533 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3534 // return true as DOM handles the key 3535 return true; 3536 } 3537 3538 // Bubble up the key event as WebView doesn't handle it 3539 return false; 3540 } 3541 3542 @Override 3543 public boolean onKeyUp(int keyCode, KeyEvent event) { 3544 if (DebugFlags.WEB_VIEW) { 3545 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3546 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3547 } 3548 3549 if (mNativeClass == 0) { 3550 return false; 3551 } 3552 3553 // special CALL handling when cursor node's href is "tel:XXX" 3554 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3555 String text = nativeCursorText(); 3556 if (!nativeCursorIsTextInput() && text != null 3557 && text.startsWith(SCHEME_TEL)) { 3558 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3559 getContext().startActivity(intent); 3560 return true; 3561 } 3562 } 3563 3564 // Bubble up the key event if 3565 // 1. it is a system key; or 3566 // 2. the host application wants to handle it; 3567 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3568 return false; 3569 } 3570 3571 // special handling in scroll_zoom state 3572 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 3573 if (KeyEvent.KEYCODE_DPAD_CENTER == keyCode 3574 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN) { 3575 setZoomScrollIn(); 3576 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 3577 invalidate(); 3578 return true; 3579 } 3580 return false; 3581 } 3582 3583 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3584 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3585 if (commitCopy()) { 3586 return true; 3587 } 3588 } 3589 3590 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3591 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3592 // always handle the navigation keys in the UI thread 3593 // Bubble up the key event as WebView doesn't handle it 3594 return false; 3595 } 3596 3597 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3598 // remove the long press message first 3599 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3600 mGotCenterDown = false; 3601 3602 if (mShiftIsPressed) { 3603 return false; 3604 } 3605 if (getSettings().supportZoom() 3606 && mTouchMode == TOUCH_DOUBLECLICK_MODE) { 3607 zoomScrollOut(); 3608 } else { 3609 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3610 .obtainMessage(SWITCH_TO_CLICK), TAP_TIMEOUT); 3611 if (DebugFlags.WEB_VIEW) { 3612 Log.v(LOGTAG, "TOUCH_DOUBLECLICK_MODE"); 3613 } 3614 mTouchMode = TOUCH_DOUBLECLICK_MODE; 3615 } 3616 return true; 3617 } 3618 3619 // TODO: should we pass all the keys to DOM or check the meta tag 3620 if (nativeCursorWantsKeyEvents() || true) { 3621 // pass the key to DOM 3622 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3623 // return true as DOM handles the key 3624 return true; 3625 } 3626 3627 // Bubble up the key event as WebView doesn't handle it 3628 return false; 3629 } 3630 3631 /** 3632 * @hide 3633 */ 3634 public void emulateShiftHeld() { 3635 mExtendSelection = false; 3636 mShiftIsPressed = true; 3637 nativeHideCursor(); 3638 } 3639 3640 private boolean commitCopy() { 3641 boolean copiedSomething = false; 3642 if (mExtendSelection) { 3643 // copy region so core operates on copy without touching orig. 3644 Region selection = new Region(nativeGetSelection()); 3645 if (selection.isEmpty() == false) { 3646 Toast.makeText(mContext 3647 , com.android.internal.R.string.text_copied 3648 , Toast.LENGTH_SHORT).show(); 3649 mWebViewCore.sendMessage(EventHub.GET_SELECTION, selection); 3650 copiedSomething = true; 3651 } 3652 mExtendSelection = false; 3653 } 3654 mShiftIsPressed = false; 3655 if (mTouchMode == TOUCH_SELECT_MODE) { 3656 mTouchMode = TOUCH_INIT_MODE; 3657 } 3658 return copiedSomething; 3659 } 3660 3661 // Set this as a hierarchy change listener so we can know when this view 3662 // is removed and still have access to our parent. 3663 @Override 3664 protected void onAttachedToWindow() { 3665 super.onAttachedToWindow(); 3666 ViewParent parent = getParent(); 3667 if (parent instanceof ViewGroup) { 3668 ViewGroup p = (ViewGroup) parent; 3669 p.setOnHierarchyChangeListener(this); 3670 } 3671 } 3672 3673 @Override 3674 protected void onDetachedFromWindow() { 3675 super.onDetachedFromWindow(); 3676 ViewParent parent = getParent(); 3677 if (parent instanceof ViewGroup) { 3678 ViewGroup p = (ViewGroup) parent; 3679 p.setOnHierarchyChangeListener(null); 3680 } 3681 3682 // Clean up the zoom controller 3683 mZoomButtonsController.setVisible(false); 3684 } 3685 3686 // Implementation for OnHierarchyChangeListener 3687 public void onChildViewAdded(View parent, View child) {} 3688 3689 public void onChildViewRemoved(View p, View child) { 3690 if (child == this) { 3691 clearTextEntry(); 3692 } 3693 } 3694 3695 /** 3696 * @deprecated WebView should not have implemented 3697 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3698 * does nothing now. 3699 */ 3700 @Deprecated 3701 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3702 } 3703 3704 // To avoid drawing the cursor ring, and remove the TextView when our window 3705 // loses focus. 3706 @Override 3707 public void onWindowFocusChanged(boolean hasWindowFocus) { 3708 if (hasWindowFocus) { 3709 if (hasFocus()) { 3710 // If our window regained focus, and we have focus, then begin 3711 // drawing the cursor ring 3712 mDrawCursorRing = true; 3713 if (mNativeClass != 0) { 3714 nativeRecordButtons(true, false, true); 3715 if (inEditingMode()) { 3716 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3717 } 3718 } 3719 } else { 3720 // If our window gained focus, but we do not have it, do not 3721 // draw the cursor ring. 3722 mDrawCursorRing = false; 3723 // We do not call nativeRecordButtons here because we assume 3724 // that when we lost focus, or window focus, it got called with 3725 // false for the first parameter 3726 } 3727 } else { 3728 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3729 /* 3730 * The zoom controls come in their own window, so our window 3731 * loses focus. Our policy is to not draw the cursor ring if 3732 * our window is not focused, but this is an exception since 3733 * the user can still navigate the web page with the zoom 3734 * controls showing. 3735 */ 3736 // If our window has lost focus, stop drawing the cursor ring 3737 mDrawCursorRing = false; 3738 } 3739 mGotKeyDown = false; 3740 mShiftIsPressed = false; 3741 if (mNativeClass != 0) { 3742 nativeRecordButtons(false, false, true); 3743 } 3744 setFocusControllerInactive(); 3745 } 3746 invalidate(); 3747 super.onWindowFocusChanged(hasWindowFocus); 3748 } 3749 3750 /* 3751 * Pass a message to WebCore Thread, telling the WebCore::Page's 3752 * FocusController to be "inactive" so that it will 3753 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3754 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3755 */ 3756 /* package */ void setFocusControllerInactive() { 3757 // Do not need to also check whether mWebViewCore is null, because 3758 // mNativeClass is only set if mWebViewCore is non null 3759 if (mNativeClass == 0) return; 3760 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3761 } 3762 3763 @Override 3764 protected void onFocusChanged(boolean focused, int direction, 3765 Rect previouslyFocusedRect) { 3766 if (DebugFlags.WEB_VIEW) { 3767 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3768 } 3769 if (focused) { 3770 // When we regain focus, if we have window focus, resume drawing 3771 // the cursor ring 3772 if (hasWindowFocus()) { 3773 mDrawCursorRing = true; 3774 if (mNativeClass != 0) { 3775 nativeRecordButtons(true, false, true); 3776 } 3777 //} else { 3778 // The WebView has gained focus while we do not have 3779 // windowfocus. When our window lost focus, we should have 3780 // called nativeRecordButtons(false...) 3781 } 3782 } else { 3783 // When we lost focus, unless focus went to the TextView (which is 3784 // true if we are in editing mode), stop drawing the cursor ring. 3785 if (!inEditingMode()) { 3786 mDrawCursorRing = false; 3787 if (mNativeClass != 0) { 3788 nativeRecordButtons(false, false, true); 3789 } 3790 setFocusControllerInactive(); 3791 } 3792 mGotKeyDown = false; 3793 } 3794 3795 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3796 } 3797 3798 @Override 3799 protected void onSizeChanged(int w, int h, int ow, int oh) { 3800 super.onSizeChanged(w, h, ow, oh); 3801 // Center zooming to the center of the screen. 3802 if (mZoomScale == 0) { // unless we're already zooming 3803 mZoomCenterX = getViewWidth() * .5f; 3804 mZoomCenterY = getViewHeight() * .5f; 3805 } 3806 3807 // update mMinZoomScale if the minimum zoom scale is not fixed 3808 if (!mMinZoomScaleFixed) { 3809 mMinZoomScale = (float) getViewWidth() 3810 / (mDrawHistory ? mHistoryPicture.getWidth() 3811 : mZoomOverviewWidth); 3812 } 3813 3814 // we always force, in case our height changed, in which case we still 3815 // want to send the notification over to webkit 3816 setNewZoomScale(mActualScale, true); 3817 } 3818 3819 @Override 3820 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3821 super.onScrollChanged(l, t, oldl, oldt); 3822 3823 sendOurVisibleRect(); 3824 } 3825 3826 3827 @Override 3828 public boolean dispatchKeyEvent(KeyEvent event) { 3829 boolean dispatch = true; 3830 3831 if (!inEditingMode()) { 3832 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3833 mGotKeyDown = true; 3834 } else { 3835 if (!mGotKeyDown) { 3836 /* 3837 * We got a key up for which we were not the recipient of 3838 * the original key down. Don't give it to the view. 3839 */ 3840 dispatch = false; 3841 } 3842 mGotKeyDown = false; 3843 } 3844 } 3845 3846 if (dispatch) { 3847 return super.dispatchKeyEvent(event); 3848 } else { 3849 // We didn't dispatch, so let something else handle the key 3850 return false; 3851 } 3852 } 3853 3854 // Here are the snap align logic: 3855 // 1. If it starts nearly horizontally or vertically, snap align; 3856 // 2. If there is a dramitic direction change, let it go; 3857 // 3. If there is a same direction back and forth, lock it. 3858 3859 // adjustable parameters 3860 private int mMinLockSnapReverseDistance; 3861 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 3862 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 3863 3864 @Override 3865 public boolean onTouchEvent(MotionEvent ev) { 3866 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 3867 return false; 3868 } 3869 3870 if (DebugFlags.WEB_VIEW) { 3871 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 3872 + mTouchMode); 3873 } 3874 3875 int action = ev.getAction(); 3876 float x = ev.getX(); 3877 float y = ev.getY(); 3878 long eventTime = ev.getEventTime(); 3879 3880 // Due to the touch screen edge effect, a touch closer to the edge 3881 // always snapped to the edge. As getViewWidth() can be different from 3882 // getWidth() due to the scrollbar, adjusting the point to match 3883 // getViewWidth(). Same applied to the height. 3884 if (x > getViewWidth() - 1) { 3885 x = getViewWidth() - 1; 3886 } 3887 if (y > getViewHeight() - 1) { 3888 y = getViewHeight() - 1; 3889 } 3890 3891 // pass the touch events from UI thread to WebCore thread 3892 if (mForwardTouchEvents && mTouchMode != SCROLL_ZOOM_OUT 3893 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN 3894 && mTouchMode != SCROLL_ZOOM_ANIMATION_OUT 3895 && (action != MotionEvent.ACTION_MOVE || 3896 eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 3897 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 3898 ted.mAction = action; 3899 ted.mX = viewToContentX((int) x + mScrollX); 3900 ted.mY = viewToContentY((int) y + mScrollY); 3901 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 3902 mLastSentTouchTime = eventTime; 3903 } 3904 3905 int deltaX = (int) (mLastTouchX - x); 3906 int deltaY = (int) (mLastTouchY - y); 3907 3908 switch (action) { 3909 case MotionEvent.ACTION_DOWN: { 3910 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3911 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3912 // no interaction while animation is in progress 3913 break; 3914 } else if (mTouchMode == SCROLL_ZOOM_OUT) { 3915 mLastScrollX = mZoomScrollX; 3916 mLastScrollY = mZoomScrollY; 3917 // If two taps are close, ignore the first tap 3918 } else if (!mScroller.isFinished()) { 3919 // stop the current scroll animation, but if this is 3920 // the start of a fling, allow it to add to the current 3921 // fling's velocity 3922 mScroller.abortAnimation(); 3923 mTouchMode = TOUCH_DRAG_START_MODE; 3924 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 3925 } else if (mShiftIsPressed) { 3926 mSelectX = mScrollX + (int) x; 3927 mSelectY = mScrollY + (int) y; 3928 mTouchMode = TOUCH_SELECT_MODE; 3929 if (DebugFlags.WEB_VIEW) { 3930 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 3931 } 3932 nativeMoveSelection(viewToContentX(mSelectX), 3933 viewToContentY(mSelectY), false); 3934 mTouchSelection = mExtendSelection = true; 3935 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 3936 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 3937 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 3938 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 3939 } else { 3940 // commit the short press action for the previous tap 3941 doShortPress(); 3942 // continue, mTouchMode should be still TOUCH_INIT_MODE 3943 } 3944 } else { 3945 mTouchMode = TOUCH_INIT_MODE; 3946 mPreventDrag = mForwardTouchEvents; 3947 mWebViewCore.sendMessage( 3948 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 3949 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 3950 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 3951 (eventTime - mLastTouchUpTime), eventTime); 3952 } 3953 } 3954 // Trigger the link 3955 if (mTouchMode == TOUCH_INIT_MODE 3956 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3957 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3958 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 3959 } 3960 // Remember where the motion event started 3961 mLastTouchX = x; 3962 mLastTouchY = y; 3963 mLastTouchTime = eventTime; 3964 mVelocityTracker = VelocityTracker.obtain(); 3965 mSnapScrollMode = SNAP_NONE; 3966 break; 3967 } 3968 case MotionEvent.ACTION_MOVE: { 3969 if (mTouchMode == TOUCH_DONE_MODE 3970 || mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3971 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3972 // no dragging during scroll zoom animation 3973 break; 3974 } 3975 if (mTouchMode == SCROLL_ZOOM_OUT) { 3976 // while fully zoomed out, move the virtual window 3977 moveZoomScrollWindow(x, y); 3978 break; 3979 } 3980 mVelocityTracker.addMovement(ev); 3981 3982 if (mTouchMode != TOUCH_DRAG_MODE) { 3983 if (mTouchMode == TOUCH_SELECT_MODE) { 3984 mSelectX = mScrollX + (int) x; 3985 mSelectY = mScrollY + (int) y; 3986 if (DebugFlags.WEB_VIEW) { 3987 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 3988 } 3989 nativeMoveSelection(viewToContentX(mSelectX), 3990 viewToContentY(mSelectY), true); 3991 invalidate(); 3992 break; 3993 } 3994 if (mPreventDrag || (deltaX * deltaX + deltaY * deltaY) 3995 < mTouchSlopSquare) { 3996 break; 3997 } 3998 3999 if (mTouchMode == TOUCH_SHORTPRESS_MODE 4000 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4001 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4002 } else if (mTouchMode == TOUCH_INIT_MODE 4003 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4004 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4005 } 4006 4007 // if it starts nearly horizontal or vertical, enforce it 4008 int ax = Math.abs(deltaX); 4009 int ay = Math.abs(deltaY); 4010 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4011 mSnapScrollMode = SNAP_X; 4012 mSnapPositive = deltaX > 0; 4013 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4014 mSnapScrollMode = SNAP_Y; 4015 mSnapPositive = deltaY > 0; 4016 } 4017 4018 mTouchMode = TOUCH_DRAG_MODE; 4019 WebViewCore.pauseUpdate(mWebViewCore); 4020 if (!mDragFromTextInput) { 4021 nativeHideCursor(); 4022 } 4023 WebSettings settings = getSettings(); 4024 if (settings.supportZoom() 4025 && settings.getBuiltInZoomControls() 4026 && !mZoomButtonsController.isVisible() 4027 && (canZoomScrollOut() || 4028 mMinZoomScale < mMaxZoomScale)) { 4029 mZoomButtonsController.setVisible(true); 4030 } 4031 } 4032 4033 // do pan 4034 int newScrollX = pinLocX(mScrollX + deltaX); 4035 deltaX = newScrollX - mScrollX; 4036 int newScrollY = pinLocY(mScrollY + deltaY); 4037 deltaY = newScrollY - mScrollY; 4038 boolean done = false; 4039 if (deltaX == 0 && deltaY == 0) { 4040 done = true; 4041 } else { 4042 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4043 int ax = Math.abs(deltaX); 4044 int ay = Math.abs(deltaY); 4045 if (mSnapScrollMode == SNAP_X) { 4046 // radical change means getting out of snap mode 4047 if (ay > MAX_SLOPE_FOR_DIAG * ax 4048 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4049 mSnapScrollMode = SNAP_NONE; 4050 } 4051 // reverse direction means lock in the snap mode 4052 if ((ax > MAX_SLOPE_FOR_DIAG * ay) && 4053 ((mSnapPositive && 4054 deltaX < -mMinLockSnapReverseDistance) 4055 || (!mSnapPositive && 4056 deltaX > mMinLockSnapReverseDistance))) { 4057 mSnapScrollMode = SNAP_X_LOCK; 4058 } 4059 } else { 4060 // radical change means getting out of snap mode 4061 if ((ax > MAX_SLOPE_FOR_DIAG * ay) 4062 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4063 mSnapScrollMode = SNAP_NONE; 4064 } 4065 // reverse direction means lock in the snap mode 4066 if ((ay > MAX_SLOPE_FOR_DIAG * ax) && 4067 ((mSnapPositive && 4068 deltaY < -mMinLockSnapReverseDistance) 4069 || (!mSnapPositive && 4070 deltaY > mMinLockSnapReverseDistance))) { 4071 mSnapScrollMode = SNAP_Y_LOCK; 4072 } 4073 } 4074 } 4075 4076 if (mSnapScrollMode == SNAP_X 4077 || mSnapScrollMode == SNAP_X_LOCK) { 4078 scrollBy(deltaX, 0); 4079 mLastTouchX = x; 4080 } else if (mSnapScrollMode == SNAP_Y 4081 || mSnapScrollMode == SNAP_Y_LOCK) { 4082 scrollBy(0, deltaY); 4083 mLastTouchY = y; 4084 } else { 4085 scrollBy(deltaX, deltaY); 4086 mLastTouchX = x; 4087 mLastTouchY = y; 4088 } 4089 mLastTouchTime = eventTime; 4090 mUserScroll = true; 4091 } 4092 4093 if (!getSettings().getBuiltInZoomControls()) { 4094 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 4095 boolean showMagnify = canZoomScrollOut(); 4096 if (mZoomControls != null && (showPlusMinus || showMagnify)) { 4097 if (mZoomControls.getVisibility() == View.VISIBLE) { 4098 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4099 } else { 4100 mZoomControls.show(showPlusMinus, showMagnify); 4101 } 4102 mPrivateHandler.postDelayed(mZoomControlRunnable, 4103 ZOOM_CONTROLS_TIMEOUT); 4104 } 4105 } 4106 4107 if (done) { 4108 // return false to indicate that we can't pan out of the 4109 // view space 4110 return false; 4111 } 4112 break; 4113 } 4114 case MotionEvent.ACTION_UP: { 4115 mLastTouchUpTime = eventTime; 4116 switch (mTouchMode) { 4117 case TOUCH_DOUBLE_TAP_MODE: // double tap 4118 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4119 mTouchMode = TOUCH_DONE_MODE; 4120 doDoubleTap(); 4121 break; 4122 case TOUCH_INIT_MODE: // tap 4123 if (ENABLE_DOUBLETAP_ZOOM) { 4124 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4125 if (!mPreventDrag) { 4126 mPrivateHandler.sendMessageDelayed( 4127 mPrivateHandler.obtainMessage( 4128 RELEASE_SINGLE_TAP), 4129 ViewConfiguration.getDoubleTapTimeout()); 4130 } 4131 break; 4132 } 4133 // fall through 4134 case TOUCH_SHORTPRESS_START_MODE: 4135 case TOUCH_SHORTPRESS_MODE: 4136 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4137 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4138 mTouchMode = TOUCH_DONE_MODE; 4139 doShortPress(); 4140 break; 4141 case TOUCH_SELECT_MODE: 4142 commitCopy(); 4143 mTouchSelection = false; 4144 break; 4145 case SCROLL_ZOOM_ANIMATION_IN: 4146 case SCROLL_ZOOM_ANIMATION_OUT: 4147 // no action during scroll animation 4148 break; 4149 case SCROLL_ZOOM_OUT: 4150 if (DebugFlags.WEB_VIEW) { 4151 Log.v(LOGTAG, "ACTION_UP SCROLL_ZOOM_OUT" 4152 + " eventTime - mLastTouchTime=" 4153 + (eventTime - mLastTouchTime)); 4154 } 4155 // for now, always zoom back when the drag completes 4156 if (true || eventTime - mLastTouchTime < TAP_TIMEOUT) { 4157 // but if we tap, zoom in where we tap 4158 if (eventTime - mLastTouchTime < TAP_TIMEOUT) { 4159 zoomScrollTap(x, y); 4160 } 4161 // start zooming in back to the original view 4162 setZoomScrollIn(); 4163 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 4164 invalidate(); 4165 } 4166 break; 4167 case TOUCH_DRAG_MODE: 4168 // if the user waits a while w/o moving before the 4169 // up, we don't want to do a fling 4170 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4171 mVelocityTracker.addMovement(ev); 4172 doFling(); 4173 break; 4174 } 4175 mLastVelocity = 0; 4176 WebViewCore.resumeUpdate(mWebViewCore); 4177 break; 4178 case TOUCH_DRAG_START_MODE: 4179 case TOUCH_DONE_MODE: 4180 // do nothing 4181 break; 4182 } 4183 // we also use mVelocityTracker == null to tell us that we are 4184 // not "moving around", so we can take the slower/prettier 4185 // mode in the drawing code 4186 if (mVelocityTracker != null) { 4187 mVelocityTracker.recycle(); 4188 mVelocityTracker = null; 4189 } 4190 break; 4191 } 4192 case MotionEvent.ACTION_CANCEL: { 4193 // we also use mVelocityTracker == null to tell us that we are 4194 // not "moving around", so we can take the slower/prettier 4195 // mode in the drawing code 4196 if (mVelocityTracker != null) { 4197 mVelocityTracker.recycle(); 4198 mVelocityTracker = null; 4199 } 4200 if (mTouchMode == SCROLL_ZOOM_OUT || 4201 mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 4202 scrollTo(mZoomScrollX, mZoomScrollY); 4203 } else if (mTouchMode == TOUCH_DRAG_MODE) { 4204 WebViewCore.resumeUpdate(mWebViewCore); 4205 } 4206 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4207 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4208 mTouchMode = TOUCH_DONE_MODE; 4209 nativeHideCursor(); 4210 break; 4211 } 4212 } 4213 return true; 4214 } 4215 4216 private long mTrackballFirstTime = 0; 4217 private long mTrackballLastTime = 0; 4218 private float mTrackballRemainsX = 0.0f; 4219 private float mTrackballRemainsY = 0.0f; 4220 private int mTrackballXMove = 0; 4221 private int mTrackballYMove = 0; 4222 private boolean mExtendSelection = false; 4223 private boolean mTouchSelection = false; 4224 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4225 private static final int TRACKBALL_TIMEOUT = 200; 4226 private static final int TRACKBALL_WAIT = 100; 4227 private static final int TRACKBALL_SCALE = 400; 4228 private static final int TRACKBALL_SCROLL_COUNT = 5; 4229 private static final int TRACKBALL_MOVE_COUNT = 10; 4230 private static final int TRACKBALL_MULTIPLIER = 3; 4231 private static final int SELECT_CURSOR_OFFSET = 16; 4232 private int mSelectX = 0; 4233 private int mSelectY = 0; 4234 private boolean mShiftIsPressed = false; 4235 private boolean mTrackballDown = false; 4236 private long mTrackballUpTime = 0; 4237 private long mLastCursorTime = 0; 4238 private Rect mLastCursorBounds; 4239 4240 // Set by default; BrowserActivity clears to interpret trackball data 4241 // directly for movement. Currently, the framework only passes 4242 // arrow key events, not trackball events, from one child to the next 4243 private boolean mMapTrackballToArrowKeys = true; 4244 4245 public void setMapTrackballToArrowKeys(boolean setMap) { 4246 mMapTrackballToArrowKeys = setMap; 4247 } 4248 4249 void resetTrackballTime() { 4250 mTrackballLastTime = 0; 4251 } 4252 4253 @Override 4254 public boolean onTrackballEvent(MotionEvent ev) { 4255 long time = ev.getEventTime(); 4256 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4257 if (ev.getY() > 0) pageDown(true); 4258 if (ev.getY() < 0) pageUp(true); 4259 return true; 4260 } 4261 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4262 mPrivateHandler.removeMessages(SWITCH_TO_CLICK); 4263 mTrackballDown = true; 4264 if (mNativeClass == 0) { 4265 return false; 4266 } 4267 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4268 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4269 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4270 nativeSelectBestAt(mLastCursorBounds); 4271 } 4272 if (DebugFlags.WEB_VIEW) { 4273 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4274 + " time=" + time 4275 + " mLastCursorTime=" + mLastCursorTime); 4276 } 4277 if (isInTouchMode()) requestFocusFromTouch(); 4278 return false; // let common code in onKeyDown at it 4279 } 4280 if (ev.getAction() == MotionEvent.ACTION_UP) { 4281 // LONG_PRESS_CENTER is set in common onKeyDown 4282 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4283 mTrackballDown = false; 4284 mTrackballUpTime = time; 4285 if (mShiftIsPressed) { 4286 if (mExtendSelection) { 4287 commitCopy(); 4288 } else { 4289 mExtendSelection = true; 4290 } 4291 } 4292 if (DebugFlags.WEB_VIEW) { 4293 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4294 + " time=" + time 4295 ); 4296 } 4297 return false; // let common code in onKeyUp at it 4298 } 4299 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4300 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4301 return false; 4302 } 4303 // no move if we're still waiting on SWITCH_TO_CLICK timeout 4304 if (mTouchMode == TOUCH_DOUBLECLICK_MODE) { 4305 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent 2 click quit"); 4306 return true; 4307 } 4308 if (mTrackballDown) { 4309 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4310 return true; // discard move if trackball is down 4311 } 4312 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4313 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4314 return true; 4315 } 4316 // TODO: alternatively we can do panning as touch does 4317 switchOutDrawHistory(); 4318 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4319 if (DebugFlags.WEB_VIEW) { 4320 Log.v(LOGTAG, "onTrackballEvent time=" 4321 + time + " last=" + mTrackballLastTime); 4322 } 4323 mTrackballFirstTime = time; 4324 mTrackballXMove = mTrackballYMove = 0; 4325 } 4326 mTrackballLastTime = time; 4327 if (DebugFlags.WEB_VIEW) { 4328 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4329 } 4330 mTrackballRemainsX += ev.getX(); 4331 mTrackballRemainsY += ev.getY(); 4332 doTrackball(time); 4333 return true; 4334 } 4335 4336 void moveSelection(float xRate, float yRate) { 4337 if (mNativeClass == 0) 4338 return; 4339 int width = getViewWidth(); 4340 int height = getViewHeight(); 4341 mSelectX += scaleTrackballX(xRate, width); 4342 mSelectY += scaleTrackballY(yRate, height); 4343 int maxX = width + mScrollX; 4344 int maxY = height + mScrollY; 4345 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4346 , mSelectX)); 4347 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4348 , mSelectY)); 4349 if (DebugFlags.WEB_VIEW) { 4350 Log.v(LOGTAG, "moveSelection" 4351 + " mSelectX=" + mSelectX 4352 + " mSelectY=" + mSelectY 4353 + " mScrollX=" + mScrollX 4354 + " mScrollY=" + mScrollY 4355 + " xRate=" + xRate 4356 + " yRate=" + yRate 4357 ); 4358 } 4359 nativeMoveSelection(viewToContentX(mSelectX), 4360 viewToContentY(mSelectY), mExtendSelection); 4361 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4362 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4363 : 0; 4364 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4365 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4366 : 0; 4367 pinScrollBy(scrollX, scrollY, true, 0); 4368 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4369 requestRectangleOnScreen(select); 4370 invalidate(); 4371 } 4372 4373 private int scaleTrackballX(float xRate, int width) { 4374 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4375 int nextXMove = xMove; 4376 if (xMove > 0) { 4377 if (xMove > mTrackballXMove) { 4378 xMove -= mTrackballXMove; 4379 } 4380 } else if (xMove < mTrackballXMove) { 4381 xMove -= mTrackballXMove; 4382 } 4383 mTrackballXMove = nextXMove; 4384 return xMove; 4385 } 4386 4387 private int scaleTrackballY(float yRate, int height) { 4388 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4389 int nextYMove = yMove; 4390 if (yMove > 0) { 4391 if (yMove > mTrackballYMove) { 4392 yMove -= mTrackballYMove; 4393 } 4394 } else if (yMove < mTrackballYMove) { 4395 yMove -= mTrackballYMove; 4396 } 4397 mTrackballYMove = nextYMove; 4398 return yMove; 4399 } 4400 4401 private int keyCodeToSoundsEffect(int keyCode) { 4402 switch(keyCode) { 4403 case KeyEvent.KEYCODE_DPAD_UP: 4404 return SoundEffectConstants.NAVIGATION_UP; 4405 case KeyEvent.KEYCODE_DPAD_RIGHT: 4406 return SoundEffectConstants.NAVIGATION_RIGHT; 4407 case KeyEvent.KEYCODE_DPAD_DOWN: 4408 return SoundEffectConstants.NAVIGATION_DOWN; 4409 case KeyEvent.KEYCODE_DPAD_LEFT: 4410 return SoundEffectConstants.NAVIGATION_LEFT; 4411 } 4412 throw new IllegalArgumentException("keyCode must be one of " + 4413 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4414 "KEYCODE_DPAD_LEFT}."); 4415 } 4416 4417 private void doTrackball(long time) { 4418 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4419 if (elapsed == 0) { 4420 elapsed = TRACKBALL_TIMEOUT; 4421 } 4422 float xRate = mTrackballRemainsX * 1000 / elapsed; 4423 float yRate = mTrackballRemainsY * 1000 / elapsed; 4424 if (mShiftIsPressed) { 4425 moveSelection(xRate, yRate); 4426 mTrackballRemainsX = mTrackballRemainsY = 0; 4427 return; 4428 } 4429 float ax = Math.abs(xRate); 4430 float ay = Math.abs(yRate); 4431 float maxA = Math.max(ax, ay); 4432 if (DebugFlags.WEB_VIEW) { 4433 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4434 + " xRate=" + xRate 4435 + " yRate=" + yRate 4436 + " mTrackballRemainsX=" + mTrackballRemainsX 4437 + " mTrackballRemainsY=" + mTrackballRemainsY); 4438 } 4439 int width = mContentWidth - getViewWidth(); 4440 int height = mContentHeight - getViewHeight(); 4441 if (width < 0) width = 0; 4442 if (height < 0) height = 0; 4443 if (mTouchMode == SCROLL_ZOOM_OUT) { 4444 int oldX = mZoomScrollX; 4445 int oldY = mZoomScrollY; 4446 int maxWH = Math.max(width, height); 4447 mZoomScrollX += scaleTrackballX(xRate, maxWH); 4448 mZoomScrollY += scaleTrackballY(yRate, maxWH); 4449 if (DebugFlags.WEB_VIEW) { 4450 Log.v(LOGTAG, "doTrackball SCROLL_ZOOM_OUT" 4451 + " mZoomScrollX=" + mZoomScrollX 4452 + " mZoomScrollY=" + mZoomScrollY); 4453 } 4454 mZoomScrollX = Math.min(width, Math.max(0, mZoomScrollX)); 4455 mZoomScrollY = Math.min(height, Math.max(0, mZoomScrollY)); 4456 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 4457 invalidate(); 4458 } 4459 mTrackballRemainsX = mTrackballRemainsY = 0; 4460 return; 4461 } 4462 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4463 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4464 maxA = Math.max(ax, ay); 4465 int count = Math.max(0, (int) maxA); 4466 int oldScrollX = mScrollX; 4467 int oldScrollY = mScrollY; 4468 if (count > 0) { 4469 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4470 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4471 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4472 KeyEvent.KEYCODE_DPAD_RIGHT; 4473 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4474 if (DebugFlags.WEB_VIEW) { 4475 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4476 + " count=" + count 4477 + " mTrackballRemainsX=" + mTrackballRemainsX 4478 + " mTrackballRemainsY=" + mTrackballRemainsY); 4479 } 4480 if (navHandledKey(selectKeyCode, count, false, time, false)) { 4481 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4482 } 4483 mTrackballRemainsX = mTrackballRemainsY = 0; 4484 } 4485 if (count >= TRACKBALL_SCROLL_COUNT) { 4486 int xMove = scaleTrackballX(xRate, width); 4487 int yMove = scaleTrackballY(yRate, height); 4488 if (DebugFlags.WEB_VIEW) { 4489 Log.v(LOGTAG, "doTrackball pinScrollBy" 4490 + " count=" + count 4491 + " xMove=" + xMove + " yMove=" + yMove 4492 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4493 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4494 ); 4495 } 4496 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4497 xMove = 0; 4498 } 4499 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4500 yMove = 0; 4501 } 4502 if (xMove != 0 || yMove != 0) { 4503 pinScrollBy(xMove, yMove, true, 0); 4504 } 4505 mUserScroll = true; 4506 } 4507 } 4508 4509 public void flingScroll(int vx, int vy) { 4510 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4511 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4512 4513 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 4514 invalidate(); 4515 } 4516 4517 private void doFling() { 4518 if (mVelocityTracker == null) { 4519 return; 4520 } 4521 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4522 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4523 4524 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 4525 int vx = (int) mVelocityTracker.getXVelocity(); 4526 int vy = (int) mVelocityTracker.getYVelocity(); 4527 4528 if (mSnapScrollMode != SNAP_NONE) { 4529 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_X_LOCK) { 4530 vy = 0; 4531 } else { 4532 vx = 0; 4533 } 4534 } 4535 4536 if (true /* EMG release: make our fling more like Maps' */) { 4537 // maps cuts their velocity in half 4538 vx = vx * 3 / 4; 4539 vy = vy * 3 / 4; 4540 } 4541 float currentVelocity = mScroller.getCurrVelocity(); 4542 if (mLastVelocity > 0 && currentVelocity > 0) { 4543 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 4544 - Math.atan2(vy, vx))); 4545 final float circle = (float) (Math.PI) * 2.0f; 4546 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 4547 vx += currentVelocity * mLastVelX / mLastVelocity; 4548 vy += currentVelocity * mLastVelY / mLastVelocity; 4549 if (DebugFlags.WEB_VIEW) { 4550 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 4551 } 4552 } else if (DebugFlags.WEB_VIEW) { 4553 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 4554 } 4555 } else if (DebugFlags.WEB_VIEW) { 4556 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 4557 + " current=" + currentVelocity); 4558 } 4559 mLastVelX = vx; 4560 mLastVelY = vy; 4561 mLastVelocity = (float) Math.hypot(vx, vy); 4562 4563 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 4564 // TODO: duration is calculated based on velocity, if the range is 4565 // small, the animation will stop before duration is up. We may 4566 // want to calculate how long the animation is going to run to precisely 4567 // resume the webcore update. 4568 final int time = mScroller.getDuration(); 4569 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_UPDATE, time); 4570 invalidate(); 4571 } 4572 4573 private boolean zoomWithPreview(float scale) { 4574 float oldScale = mActualScale; 4575 mInitialScrollX = mScrollX; 4576 mInitialScrollY = mScrollY; 4577 4578 // snap to DEFAULT_SCALE if it is close 4579 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 4580 scale = mDefaultScale; 4581 } 4582 4583 setNewZoomScale(scale, false); 4584 4585 if (oldScale != mActualScale) { 4586 // use mZoomPickerScale to see zoom preview first 4587 mZoomStart = SystemClock.uptimeMillis(); 4588 mInvInitialZoomScale = 1.0f / oldScale; 4589 mInvFinalZoomScale = 1.0f / mActualScale; 4590 mZoomScale = mActualScale; 4591 if (!mInZoomOverview) { 4592 mLastScale = scale; 4593 } 4594 invalidate(); 4595 return true; 4596 } else { 4597 return false; 4598 } 4599 } 4600 4601 /** 4602 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 4603 * in charge of installing this view to the view hierarchy. This view will 4604 * become visible when the user starts scrolling via touch and fade away if 4605 * the user does not interact with it. 4606 * <p/> 4607 * API version 3 introduces a built-in zoom mechanism that is shown 4608 * automatically by the MapView. This is the preferred approach for 4609 * showing the zoom UI. 4610 * 4611 * @deprecated The built-in zoom mechanism is preferred, see 4612 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 4613 */ 4614 @Deprecated 4615 public View getZoomControls() { 4616 if (!getSettings().supportZoom()) { 4617 Log.w(LOGTAG, "This WebView doesn't support zoom."); 4618 return null; 4619 } 4620 if (mZoomControls == null) { 4621 mZoomControls = createZoomControls(); 4622 4623 /* 4624 * need to be set to VISIBLE first so that getMeasuredHeight() in 4625 * {@link #onSizeChanged()} can return the measured value for proper 4626 * layout. 4627 */ 4628 mZoomControls.setVisibility(View.VISIBLE); 4629 mZoomControlRunnable = new Runnable() { 4630 public void run() { 4631 4632 /* Don't dismiss the controls if the user has 4633 * focus on them. Wait and check again later. 4634 */ 4635 if (!mZoomControls.hasFocus()) { 4636 mZoomControls.hide(); 4637 } else { 4638 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4639 mPrivateHandler.postDelayed(mZoomControlRunnable, 4640 ZOOM_CONTROLS_TIMEOUT); 4641 } 4642 } 4643 }; 4644 } 4645 return mZoomControls; 4646 } 4647 4648 private ExtendedZoomControls createZoomControls() { 4649 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 4650 , null); 4651 zoomControls.setOnZoomInClickListener(new OnClickListener() { 4652 public void onClick(View v) { 4653 // reset time out 4654 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4655 mPrivateHandler.postDelayed(mZoomControlRunnable, 4656 ZOOM_CONTROLS_TIMEOUT); 4657 zoomIn(); 4658 } 4659 }); 4660 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 4661 public void onClick(View v) { 4662 // reset time out 4663 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4664 mPrivateHandler.postDelayed(mZoomControlRunnable, 4665 ZOOM_CONTROLS_TIMEOUT); 4666 zoomOut(); 4667 } 4668 }); 4669 zoomControls.setOnZoomMagnifyClickListener(new OnClickListener() { 4670 public void onClick(View v) { 4671 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4672 mPrivateHandler.postDelayed(mZoomControlRunnable, 4673 ZOOM_CONTROLS_TIMEOUT); 4674 zoomScrollOut(); 4675 } 4676 }); 4677 return zoomControls; 4678 } 4679 4680 /** 4681 * Gets the {@link ZoomButtonsController} which can be used to add 4682 * additional buttons to the zoom controls window. 4683 * 4684 * @return The instance of {@link ZoomButtonsController} used by this class, 4685 * or null if it is unavailable. 4686 * @hide 4687 */ 4688 public ZoomButtonsController getZoomButtonsController() { 4689 return mZoomButtonsController; 4690 } 4691 4692 /** 4693 * Perform zoom in in the webview 4694 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 4695 */ 4696 public boolean zoomIn() { 4697 // TODO: alternatively we can disallow this during draw history mode 4698 switchOutDrawHistory(); 4699 // Center zooming to the center of the screen. 4700 if (mInZoomOverview) { 4701 // if in overview mode, bring it back to normal mode 4702 mLastTouchX = getViewWidth() * .5f; 4703 mLastTouchY = getViewHeight() * .5f; 4704 doDoubleTap(); 4705 return true; 4706 } else { 4707 mZoomCenterX = getViewWidth() * .5f; 4708 mZoomCenterY = getViewHeight() * .5f; 4709 return zoomWithPreview(mActualScale * 1.25f); 4710 } 4711 } 4712 4713 /** 4714 * Perform zoom out in the webview 4715 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 4716 */ 4717 public boolean zoomOut() { 4718 // TODO: alternatively we can disallow this during draw history mode 4719 switchOutDrawHistory(); 4720 float scale = mActualScale * 0.8f; 4721 if (scale < (mMinZoomScale + 0.1f) && WebView.ENABLE_DOUBLETAP_ZOOM 4722 && mWebViewCore.getSettings().getUseWideViewPort()) { 4723 // when zoom out to min scale, switch to overview mode 4724 doDoubleTap(); 4725 return true; 4726 } else { 4727 // Center zooming to the center of the screen. 4728 mZoomCenterX = getViewWidth() * .5f; 4729 mZoomCenterY = getViewHeight() * .5f; 4730 return zoomWithPreview(scale); 4731 } 4732 } 4733 4734 private void updateSelection() { 4735 if (mNativeClass == 0) { 4736 return; 4737 } 4738 // mLastTouchX and mLastTouchY are the point in the current viewport 4739 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4740 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4741 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 4742 contentX + mNavSlop, contentY + mNavSlop); 4743 nativeSelectBestAt(rect); 4744 } 4745 4746 /** 4747 * Scroll the focused text field/area to match the WebTextView 4748 * @param x New x position of the WebTextView in view coordinates 4749 * @param y New y position of the WebTextView in view coordinates 4750 */ 4751 /*package*/ void scrollFocusedTextInput(int x, int y) { 4752 if (!inEditingMode() || mWebViewCore == null) { 4753 return; 4754 } 4755 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, viewToContentX(x), 4756 viewToContentY(y)); 4757 } 4758 4759 /** 4760 * Set our starting point and time for a drag from the WebTextView. 4761 */ 4762 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 4763 if (!inEditingMode()) { 4764 return; 4765 } 4766 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 4767 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 4768 mLastTouchTime = eventTime; 4769 if (!mScroller.isFinished()) { 4770 abortAnimation(); 4771 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 4772 } 4773 mSnapScrollMode = SNAP_NONE; 4774 mVelocityTracker = VelocityTracker.obtain(); 4775 mTouchMode = TOUCH_DRAG_START_MODE; 4776 } 4777 4778 /** 4779 * Given a motion event from the WebTextView, set its location to our 4780 * coordinates, and handle the event. 4781 */ 4782 /*package*/ boolean textFieldDrag(MotionEvent event) { 4783 if (!inEditingMode()) { 4784 return false; 4785 } 4786 mDragFromTextInput = true; 4787 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 4788 (float) (mWebTextView.getTop() - mScrollY)); 4789 boolean result = onTouchEvent(event); 4790 mDragFromTextInput = false; 4791 return result; 4792 } 4793 4794 /** 4795 * Do a touch up from a WebTextView. This will be handled by webkit to 4796 * change the selection. 4797 * @param event MotionEvent in the WebTextView's coordinates. 4798 */ 4799 /*package*/ void touchUpOnTextField(MotionEvent event) { 4800 if (!inEditingMode()) { 4801 return; 4802 } 4803 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 4804 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 4805 nativeTextInputMotionUp(x, y); 4806 } 4807 4808 /*package*/ void shortPressOnTextField() { 4809 if (inEditingMode()) { 4810 View v = mWebTextView; 4811 int x = viewToContentX((v.getLeft() + v.getRight()) >> 1); 4812 int y = viewToContentY((v.getTop() + v.getBottom()) >> 1); 4813 nativeTextInputMotionUp(x, y); 4814 } 4815 } 4816 4817 private void doShortPress() { 4818 if (mNativeClass == 0) { 4819 return; 4820 } 4821 switchOutDrawHistory(); 4822 // mLastTouchX and mLastTouchY are the point in the current viewport 4823 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4824 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4825 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 4826 if (mLogEvent) { 4827 Checkin.updateStats(mContext.getContentResolver(), 4828 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 4829 } 4830 } 4831 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 4832 playSoundEffect(SoundEffectConstants.CLICK); 4833 } 4834 } 4835 4836 private void doDoubleTap() { 4837 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 4838 return; 4839 } 4840 mZoomCenterX = mLastTouchX; 4841 mZoomCenterY = mLastTouchY; 4842 mInZoomOverview = !mInZoomOverview; 4843 // remove the zoom control after double tap 4844 if (getSettings().getBuiltInZoomControls()) { 4845 if (mZoomButtonsController.isVisible()) { 4846 mZoomButtonsController.setVisible(false); 4847 } 4848 } else { 4849 if (mZoomControlRunnable != null) { 4850 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4851 } 4852 if (mZoomControls != null) { 4853 mZoomControls.hide(); 4854 } 4855 } 4856 if (mInZoomOverview) { 4857 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth); 4858 } else { 4859 // mLastTouchX and mLastTouchY are the point in the current viewport 4860 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4861 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4862 int left = nativeGetBlockLeftEdge(contentX, contentY, mActualScale); 4863 if (left != NO_LEFTEDGE) { 4864 // add a 5pt padding to the left edge. Re-calculate the zoom 4865 // center so that the new scroll x will be on the left edge. 4866 mZoomCenterX = left < 5 ? 0 : (left - 5) * mLastScale 4867 * mActualScale / (mLastScale - mActualScale); 4868 } 4869 zoomWithPreview(mLastScale); 4870 } 4871 } 4872 4873 // Called by JNI to handle a touch on a node representing an email address, 4874 // address, or phone number 4875 private void overrideLoading(String url) { 4876 mCallbackProxy.uiOverrideUrlLoading(url); 4877 } 4878 4879 // called by JNI 4880 private void sendPluginState(int state) { 4881 WebViewCore.PluginStateData psd = new WebViewCore.PluginStateData(); 4882 psd.mFrame = nativeCursorFramePointer(); 4883 psd.mNode = nativeCursorNodePointer(); 4884 psd.mState = state; 4885 mWebViewCore.sendMessage(EventHub.PLUGIN_STATE, psd); 4886 } 4887 4888 @Override 4889 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 4890 boolean result = false; 4891 if (inEditingMode()) { 4892 result = mWebTextView.requestFocus(direction, 4893 previouslyFocusedRect); 4894 } else { 4895 result = super.requestFocus(direction, previouslyFocusedRect); 4896 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 4897 // For cases such as GMail, where we gain focus from a direction, 4898 // we want to move to the first available link. 4899 // FIXME: If there are no visible links, we may not want to 4900 int fakeKeyDirection = 0; 4901 switch(direction) { 4902 case View.FOCUS_UP: 4903 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 4904 break; 4905 case View.FOCUS_DOWN: 4906 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 4907 break; 4908 case View.FOCUS_LEFT: 4909 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 4910 break; 4911 case View.FOCUS_RIGHT: 4912 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 4913 break; 4914 default: 4915 return result; 4916 } 4917 if (mNativeClass != 0 && !nativeHasCursorNode()) { 4918 navHandledKey(fakeKeyDirection, 1, true, 0, true); 4919 } 4920 } 4921 } 4922 return result; 4923 } 4924 4925 @Override 4926 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4927 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 4928 4929 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 4930 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 4931 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 4932 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 4933 4934 int measuredHeight = heightSize; 4935 int measuredWidth = widthSize; 4936 4937 // Grab the content size from WebViewCore. 4938 int contentHeight = mContentHeight; 4939 int contentWidth = mContentWidth; 4940 4941// Log.d(LOGTAG, "------- measure " + heightMode); 4942 4943 if (heightMode != MeasureSpec.EXACTLY) { 4944 mHeightCanMeasure = true; 4945 measuredHeight = contentHeight; 4946 if (heightMode == MeasureSpec.AT_MOST) { 4947 // If we are larger than the AT_MOST height, then our height can 4948 // no longer be measured and we should scroll internally. 4949 if (measuredHeight > heightSize) { 4950 measuredHeight = heightSize; 4951 mHeightCanMeasure = false; 4952 } 4953 } 4954 } else { 4955 mHeightCanMeasure = false; 4956 } 4957 if (mNativeClass != 0) { 4958 nativeSetHeightCanMeasure(mHeightCanMeasure); 4959 } 4960 // For the width, always use the given size unless unspecified. 4961 if (widthMode == MeasureSpec.UNSPECIFIED) { 4962 mWidthCanMeasure = true; 4963 measuredWidth = contentWidth; 4964 } else { 4965 mWidthCanMeasure = false; 4966 } 4967 4968 synchronized (this) { 4969 setMeasuredDimension(measuredWidth, measuredHeight); 4970 } 4971 } 4972 4973 @Override 4974 public boolean requestChildRectangleOnScreen(View child, 4975 Rect rect, 4976 boolean immediate) { 4977 rect.offset(child.getLeft() - child.getScrollX(), 4978 child.getTop() - child.getScrollY()); 4979 4980 int height = getHeight() - getHorizontalScrollbarHeight(); 4981 int screenTop = mScrollY; 4982 int screenBottom = screenTop + height; 4983 4984 int scrollYDelta = 0; 4985 4986 if (rect.bottom > screenBottom) { 4987 int oneThirdOfScreenHeight = height / 3; 4988 if (rect.height() > 2 * oneThirdOfScreenHeight) { 4989 // If the rectangle is too tall to fit in the bottom two thirds 4990 // of the screen, place it at the top. 4991 scrollYDelta = rect.top - screenTop; 4992 } else { 4993 // If the rectangle will still fit on screen, we want its 4994 // top to be in the top third of the screen. 4995 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 4996 } 4997 } else if (rect.top < screenTop) { 4998 scrollYDelta = rect.top - screenTop; 4999 } 5000 5001 int width = getWidth() - getVerticalScrollbarWidth(); 5002 int screenLeft = mScrollX; 5003 int screenRight = screenLeft + width; 5004 5005 int scrollXDelta = 0; 5006 5007 if (rect.right > screenRight && rect.left > screenLeft) { 5008 if (rect.width() > width) { 5009 scrollXDelta += (rect.left - screenLeft); 5010 } else { 5011 scrollXDelta += (rect.right - screenRight); 5012 } 5013 } else if (rect.left < screenLeft) { 5014 scrollXDelta -= (screenLeft - rect.left); 5015 } 5016 5017 if ((scrollYDelta | scrollXDelta) != 0) { 5018 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 5019 } 5020 5021 return false; 5022 } 5023 5024 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 5025 String replace, int newStart, int newEnd) { 5026 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 5027 arg.mReplace = replace; 5028 arg.mNewStart = newStart; 5029 arg.mNewEnd = newEnd; 5030 mTextGeneration++; 5031 arg.mTextGeneration = mTextGeneration; 5032 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 5033 } 5034 5035 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 5036 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 5037 mWebViewCore.sendMessage(EventHub.CLICK); 5038 } 5039 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 5040 arg.mEvent = event; 5041 arg.mCurrentText = currentText; 5042 // Increase our text generation number, and pass it to webcore thread 5043 mTextGeneration++; 5044 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 5045 // WebKit's document state is not saved until about to leave the page. 5046 // To make sure the host application, like Browser, has the up to date 5047 // document state when it goes to background, we force to save the 5048 // document state. 5049 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 5050 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 5051 cursorData(), 1000); 5052 } 5053 5054 /* package */ WebViewCore getWebViewCore() { 5055 return mWebViewCore; 5056 } 5057 5058 //------------------------------------------------------------------------- 5059 // Methods can be called from a separate thread, like WebViewCore 5060 // If it needs to call the View system, it has to send message. 5061 //------------------------------------------------------------------------- 5062 5063 /** 5064 * General handler to receive message coming from webkit thread 5065 */ 5066 class PrivateHandler extends Handler { 5067 @Override 5068 public void handleMessage(Message msg) { 5069 if (DebugFlags.WEB_VIEW) { 5070 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 5071 > INVAL_RECT_MSG_ID ? Integer.toString(msg.what) 5072 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 5073 } 5074 switch (msg.what) { 5075 case REMEMBER_PASSWORD: { 5076 mDatabase.setUsernamePassword( 5077 msg.getData().getString("host"), 5078 msg.getData().getString("username"), 5079 msg.getData().getString("password")); 5080 ((Message) msg.obj).sendToTarget(); 5081 break; 5082 } 5083 case NEVER_REMEMBER_PASSWORD: { 5084 mDatabase.setUsernamePassword( 5085 msg.getData().getString("host"), null, null); 5086 ((Message) msg.obj).sendToTarget(); 5087 break; 5088 } 5089 case SWITCH_TO_SHORTPRESS: { 5090 if (mTouchMode == TOUCH_INIT_MODE) { 5091 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 5092 updateSelection(); 5093 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5094 mTouchMode = TOUCH_DONE_MODE; 5095 } 5096 break; 5097 } 5098 case SWITCH_TO_LONGPRESS: { 5099 if (!mPreventDrag) { 5100 mTouchMode = TOUCH_DONE_MODE; 5101 performLongClick(); 5102 rebuildWebTextView(); 5103 } 5104 break; 5105 } 5106 case RELEASE_SINGLE_TAP: { 5107 if (!mPreventDrag) { 5108 mTouchMode = TOUCH_DONE_MODE; 5109 doShortPress(); 5110 } 5111 break; 5112 } 5113 case SWITCH_TO_CLICK: 5114 // The user clicked with the trackball, and did not click a 5115 // second time, so perform the action of a trackball single 5116 // click 5117 mTouchMode = TOUCH_DONE_MODE; 5118 Rect visibleRect = sendOurVisibleRect(); 5119 // Note that sendOurVisibleRect calls viewToContent, so the 5120 // coordinates should be in content coordinates. 5121 if (!nativeCursorIntersects(visibleRect)) { 5122 break; 5123 } 5124 nativeSetFollowedLink(true); 5125 nativeUpdatePluginReceivesEvents(); 5126 WebViewCore.CursorData data = cursorData(); 5127 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5128 playSoundEffect(SoundEffectConstants.CLICK); 5129 boolean isTextInput = nativeCursorIsTextInput(); 5130 if (isTextInput || !mCallbackProxy.uiOverrideUrlLoading( 5131 nativeCursorText())) { 5132 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5133 nativeCursorNodePointer()); 5134 } 5135 if (isTextInput) { 5136 rebuildWebTextView(); 5137 } 5138 break; 5139 case SCROLL_BY_MSG_ID: 5140 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 5141 break; 5142 case SYNC_SCROLL_TO_MSG_ID: 5143 if (mUserScroll) { 5144 // if user has scrolled explicitly, don't sync the 5145 // scroll position any more 5146 mUserScroll = false; 5147 break; 5148 } 5149 // fall through 5150 case SCROLL_TO_MSG_ID: 5151 if (setContentScrollTo(msg.arg1, msg.arg2)) { 5152 // if we can't scroll to the exact position due to pin, 5153 // send a message to WebCore to re-scroll when we get a 5154 // new picture 5155 mUserScroll = false; 5156 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 5157 msg.arg1, msg.arg2); 5158 } 5159 break; 5160 case SPAWN_SCROLL_TO_MSG_ID: 5161 spawnContentScrollTo(msg.arg1, msg.arg2); 5162 break; 5163 case NEW_PICTURE_MSG_ID: { 5164 WebSettings settings = mWebViewCore.getSettings(); 5165 // called for new content 5166 final int viewWidth = getViewWidth(); 5167 final WebViewCore.DrawData draw = 5168 (WebViewCore.DrawData) msg.obj; 5169 final Point viewSize = draw.mViewPoint; 5170 boolean useWideViewport = settings.getUseWideViewPort(); 5171 WebViewCore.RestoreState restoreState = draw.mRestoreState; 5172 if (restoreState != null) { 5173 mInZoomOverview = false; 5174 mLastScale = restoreState.mTextWrapScale; 5175 if (restoreState.mMinScale == 0) { 5176 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 5177 mMinZoomScaleFixed = false; 5178 } else { 5179 mMinZoomScale = restoreState.mMinScale; 5180 mMinZoomScaleFixed = true; 5181 } 5182 if (restoreState.mMaxScale == 0) { 5183 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 5184 } else { 5185 mMaxZoomScale = restoreState.mMaxScale; 5186 } 5187 setNewZoomScale(mLastScale, false); 5188 setContentScrollTo(restoreState.mScrollX, 5189 restoreState.mScrollY); 5190 if (!ENABLE_DOUBLETAP_ZOOM 5191 || !settings.getLoadWithOverviewMode()) { 5192 } else { 5193 if (useWideViewport 5194 && restoreState.mViewScale == 0) { 5195 mInZoomOverview = true; 5196 } 5197 } 5198 // As we are on a new page, remove the WebTextView. This 5199 // is necessary for page loads driven by webkit, and in 5200 // particular when the user was on a password field, so 5201 // the WebTextView was visible. 5202 clearTextEntry(); 5203 } 5204 // We update the layout (i.e. request a layout from the 5205 // view system) if the last view size that we sent to 5206 // WebCore matches the view size of the picture we just 5207 // received in the fixed dimension. 5208 final boolean updateLayout = viewSize.x == mLastWidthSent 5209 && viewSize.y == mLastHeightSent; 5210 recordNewContentSize(draw.mWidthHeight.x, 5211 draw.mWidthHeight.y, updateLayout); 5212 if (DebugFlags.WEB_VIEW) { 5213 Rect b = draw.mInvalRegion.getBounds(); 5214 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5215 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5216 } 5217 invalidate(contentToView(draw.mInvalRegion.getBounds())); 5218 if (mPictureListener != null) { 5219 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5220 } 5221 if (useWideViewport) { 5222 mZoomOverviewWidth = Math.max(draw.mMinPrefWidth, 5223 draw.mViewPoint.x); 5224 } 5225 if (!mMinZoomScaleFixed) { 5226 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5227 } 5228 if (!mDrawHistory && mInZoomOverview) { 5229 // fit the content width to the current view. Ignore 5230 // the rounding error case. 5231 if (Math.abs((viewWidth * mInvActualScale) 5232 - mZoomOverviewWidth) > 1) { 5233 setNewZoomScale((float) viewWidth 5234 / mZoomOverviewWidth, false); 5235 } 5236 } 5237 break; 5238 } 5239 case WEBCORE_INITIALIZED_MSG_ID: 5240 // nativeCreate sets mNativeClass to a non-zero value 5241 nativeCreate(msg.arg1); 5242 break; 5243 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5244 // Make sure that the textfield is currently focused 5245 // and representing the same node as the pointer. 5246 if (inEditingMode() && 5247 mWebTextView.isSameTextField(msg.arg1)) { 5248 if (msg.getData().getBoolean("password")) { 5249 Spannable text = (Spannable) mWebTextView.getText(); 5250 int start = Selection.getSelectionStart(text); 5251 int end = Selection.getSelectionEnd(text); 5252 mWebTextView.setInPassword(true); 5253 // Restore the selection, which may have been 5254 // ruined by setInPassword. 5255 Spannable pword = 5256 (Spannable) mWebTextView.getText(); 5257 Selection.setSelection(pword, start, end); 5258 // If the text entry has created more events, ignore 5259 // this one. 5260 } else if (msg.arg2 == mTextGeneration) { 5261 mWebTextView.setTextAndKeepSelection( 5262 (String) msg.obj); 5263 } 5264 } 5265 break; 5266 case UPDATE_TEXT_SELECTION_MSG_ID: 5267 if (inEditingMode() 5268 && mWebTextView.isSameTextField(msg.arg1) 5269 && msg.arg2 == mTextGeneration) { 5270 WebViewCore.TextSelectionData tData 5271 = (WebViewCore.TextSelectionData) msg.obj; 5272 mWebTextView.setSelectionFromWebKit(tData.mStart, 5273 tData.mEnd); 5274 } 5275 break; 5276 case MOVE_OUT_OF_PLUGIN: 5277 if (nativePluginEatsNavKey()) { 5278 navHandledKey(msg.arg1, 1, false, 0, true); 5279 } 5280 break; 5281 case UPDATE_TEXT_ENTRY_MSG_ID: 5282 // this is sent after finishing resize in WebViewCore. Make 5283 // sure the text edit box is still on the screen. 5284 if (inEditingMode() && nativeCursorIsTextInput()) { 5285 mWebTextView.bringIntoView(); 5286 rebuildWebTextView(); 5287 } 5288 break; 5289 case CLEAR_TEXT_ENTRY: 5290 clearTextEntry(); 5291 break; 5292 case INVAL_RECT_MSG_ID: { 5293 Rect r = (Rect)msg.obj; 5294 if (r == null) { 5295 invalidate(); 5296 } else { 5297 // we need to scale r from content into view coords, 5298 // which viewInvalidate() does for us 5299 viewInvalidate(r.left, r.top, r.right, r.bottom); 5300 } 5301 break; 5302 } 5303 case REQUEST_FORM_DATA: 5304 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5305 if (mWebTextView.isSameTextField(msg.arg1)) { 5306 mWebTextView.setAdapterCustom(adapter); 5307 } 5308 break; 5309 case UPDATE_CLIPBOARD: 5310 String str = (String) msg.obj; 5311 if (DebugFlags.WEB_VIEW) { 5312 Log.v(LOGTAG, "UPDATE_CLIPBOARD " + str); 5313 } 5314 try { 5315 IClipboard clip = IClipboard.Stub.asInterface( 5316 ServiceManager.getService("clipboard")); 5317 clip.setClipboardText(str); 5318 } catch (android.os.RemoteException e) { 5319 Log.e(LOGTAG, "Clipboard failed", e); 5320 } 5321 break; 5322 case RESUME_WEBCORE_UPDATE: 5323 WebViewCore.resumeUpdate(mWebViewCore); 5324 break; 5325 5326 case LONG_PRESS_CENTER: 5327 // as this is shared by keydown and trackballdown, reset all 5328 // the states 5329 mGotCenterDown = false; 5330 mTrackballDown = false; 5331 // LONG_PRESS_CENTER is sent as a delayed message. If we 5332 // switch to windows overview, the WebView will be 5333 // temporarily removed from the view system. In that case, 5334 // do nothing. 5335 if (getParent() != null) { 5336 performLongClick(); 5337 } 5338 break; 5339 5340 case WEBCORE_NEED_TOUCH_EVENTS: 5341 mForwardTouchEvents = (msg.arg1 != 0); 5342 break; 5343 5344 case PREVENT_TOUCH_ID: 5345 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5346 mPreventDrag = msg.arg2 == 1; 5347 if (mPreventDrag) { 5348 mTouchMode = TOUCH_DONE_MODE; 5349 } 5350 } 5351 break; 5352 5353 case REQUEST_KEYBOARD: 5354 if (msg.arg1 == 0) { 5355 hideSoftKeyboard(); 5356 } else { 5357 displaySoftKeyboard(false); 5358 } 5359 break; 5360 5361 default: 5362 super.handleMessage(msg); 5363 break; 5364 } 5365 } 5366 } 5367 5368 // Class used to use a dropdown for a <select> element 5369 private class InvokeListBox implements Runnable { 5370 // Whether the listbox allows multiple selection. 5371 private boolean mMultiple; 5372 // Passed in to a list with multiple selection to tell 5373 // which items are selected. 5374 private int[] mSelectedArray; 5375 // Passed in to a list with single selection to tell 5376 // where the initial selection is. 5377 private int mSelection; 5378 5379 private Container[] mContainers; 5380 5381 // Need these to provide stable ids to my ArrayAdapter, 5382 // which normally does not have stable ids. (Bug 1250098) 5383 private class Container extends Object { 5384 String mString; 5385 boolean mEnabled; 5386 int mId; 5387 5388 public String toString() { 5389 return mString; 5390 } 5391 } 5392 5393 /** 5394 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 5395 * and allow filtering. 5396 */ 5397 private class MyArrayListAdapter extends ArrayAdapter<Container> { 5398 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 5399 super(context, 5400 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 5401 com.android.internal.R.layout.select_dialog_singlechoice, 5402 objects); 5403 } 5404 5405 @Override 5406 public boolean hasStableIds() { 5407 // AdapterView's onChanged method uses this to determine whether 5408 // to restore the old state. Return false so that the old (out 5409 // of date) state does not replace the new, valid state. 5410 return false; 5411 } 5412 5413 private Container item(int position) { 5414 if (position < 0 || position >= getCount()) { 5415 return null; 5416 } 5417 return (Container) getItem(position); 5418 } 5419 5420 @Override 5421 public long getItemId(int position) { 5422 Container item = item(position); 5423 if (item == null) { 5424 return -1; 5425 } 5426 return item.mId; 5427 } 5428 5429 @Override 5430 public boolean areAllItemsEnabled() { 5431 return false; 5432 } 5433 5434 @Override 5435 public boolean isEnabled(int position) { 5436 Container item = item(position); 5437 if (item == null) { 5438 return false; 5439 } 5440 return item.mEnabled; 5441 } 5442 } 5443 5444 private InvokeListBox(String[] array, 5445 boolean[] enabled, int[] selected) { 5446 mMultiple = true; 5447 mSelectedArray = selected; 5448 5449 int length = array.length; 5450 mContainers = new Container[length]; 5451 for (int i = 0; i < length; i++) { 5452 mContainers[i] = new Container(); 5453 mContainers[i].mString = array[i]; 5454 mContainers[i].mEnabled = enabled[i]; 5455 mContainers[i].mId = i; 5456 } 5457 } 5458 5459 private InvokeListBox(String[] array, boolean[] enabled, int 5460 selection) { 5461 mSelection = selection; 5462 mMultiple = false; 5463 5464 int length = array.length; 5465 mContainers = new Container[length]; 5466 for (int i = 0; i < length; i++) { 5467 mContainers[i] = new Container(); 5468 mContainers[i].mString = array[i]; 5469 mContainers[i].mEnabled = enabled[i]; 5470 mContainers[i].mId = i; 5471 } 5472 } 5473 5474 /* 5475 * Whenever the data set changes due to filtering, this class ensures 5476 * that the checked item remains checked. 5477 */ 5478 private class SingleDataSetObserver extends DataSetObserver { 5479 private long mCheckedId; 5480 private ListView mListView; 5481 private Adapter mAdapter; 5482 5483 /* 5484 * Create a new observer. 5485 * @param id The ID of the item to keep checked. 5486 * @param l ListView for getting and clearing the checked states 5487 * @param a Adapter for getting the IDs 5488 */ 5489 public SingleDataSetObserver(long id, ListView l, Adapter a) { 5490 mCheckedId = id; 5491 mListView = l; 5492 mAdapter = a; 5493 } 5494 5495 public void onChanged() { 5496 // The filter may have changed which item is checked. Find the 5497 // item that the ListView thinks is checked. 5498 int position = mListView.getCheckedItemPosition(); 5499 long id = mAdapter.getItemId(position); 5500 if (mCheckedId != id) { 5501 // Clear the ListView's idea of the checked item, since 5502 // it is incorrect 5503 mListView.clearChoices(); 5504 // Search for mCheckedId. If it is in the filtered list, 5505 // mark it as checked 5506 int count = mAdapter.getCount(); 5507 for (int i = 0; i < count; i++) { 5508 if (mAdapter.getItemId(i) == mCheckedId) { 5509 mListView.setItemChecked(i, true); 5510 break; 5511 } 5512 } 5513 } 5514 } 5515 5516 public void onInvalidate() {} 5517 } 5518 5519 public void run() { 5520 final ListView listView = (ListView) LayoutInflater.from(mContext) 5521 .inflate(com.android.internal.R.layout.select_dialog, null); 5522 final MyArrayListAdapter adapter = new 5523 MyArrayListAdapter(mContext, mContainers, mMultiple); 5524 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 5525 .setView(listView).setCancelable(true) 5526 .setInverseBackgroundForced(true); 5527 5528 if (mMultiple) { 5529 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 5530 public void onClick(DialogInterface dialog, int which) { 5531 mWebViewCore.sendMessage( 5532 EventHub.LISTBOX_CHOICES, 5533 adapter.getCount(), 0, 5534 listView.getCheckedItemPositions()); 5535 }}); 5536 b.setNegativeButton(android.R.string.cancel, 5537 new DialogInterface.OnClickListener() { 5538 public void onClick(DialogInterface dialog, int which) { 5539 mWebViewCore.sendMessage( 5540 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5541 }}); 5542 } 5543 final AlertDialog dialog = b.create(); 5544 listView.setAdapter(adapter); 5545 listView.setFocusableInTouchMode(true); 5546 // There is a bug (1250103) where the checks in a ListView with 5547 // multiple items selected are associated with the positions, not 5548 // the ids, so the items do not properly retain their checks when 5549 // filtered. Do not allow filtering on multiple lists until 5550 // that bug is fixed. 5551 5552 listView.setTextFilterEnabled(!mMultiple); 5553 if (mMultiple) { 5554 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 5555 int length = mSelectedArray.length; 5556 for (int i = 0; i < length; i++) { 5557 listView.setItemChecked(mSelectedArray[i], true); 5558 } 5559 } else { 5560 listView.setOnItemClickListener(new OnItemClickListener() { 5561 public void onItemClick(AdapterView parent, View v, 5562 int position, long id) { 5563 mWebViewCore.sendMessage( 5564 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 5565 dialog.dismiss(); 5566 } 5567 }); 5568 if (mSelection != -1) { 5569 listView.setSelection(mSelection); 5570 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 5571 listView.setItemChecked(mSelection, true); 5572 DataSetObserver observer = new SingleDataSetObserver( 5573 adapter.getItemId(mSelection), listView, adapter); 5574 adapter.registerDataSetObserver(observer); 5575 } 5576 } 5577 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 5578 public void onCancel(DialogInterface dialog) { 5579 mWebViewCore.sendMessage( 5580 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5581 } 5582 }); 5583 dialog.show(); 5584 } 5585 } 5586 5587 /* 5588 * Request a dropdown menu for a listbox with multiple selection. 5589 * 5590 * @param array Labels for the listbox. 5591 * @param enabledArray Which positions are enabled. 5592 * @param selectedArray Which positions are initally selected. 5593 */ 5594 void requestListBox(String[] array, boolean[]enabledArray, int[] 5595 selectedArray) { 5596 mPrivateHandler.post( 5597 new InvokeListBox(array, enabledArray, selectedArray)); 5598 } 5599 5600 /* 5601 * Request a dropdown menu for a listbox with single selection or a single 5602 * <select> element. 5603 * 5604 * @param array Labels for the listbox. 5605 * @param enabledArray Which positions are enabled. 5606 * @param selection Which position is initally selected. 5607 */ 5608 void requestListBox(String[] array, boolean[]enabledArray, int selection) { 5609 mPrivateHandler.post( 5610 new InvokeListBox(array, enabledArray, selection)); 5611 } 5612 5613 // called by JNI 5614 private void sendMoveMouse(int frame, int node, int x, int y) { 5615 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 5616 new WebViewCore.CursorData(frame, node, x, y)); 5617 } 5618 5619 /* 5620 * Send a mouse move event to the webcore thread. 5621 * 5622 * @param removeFocus Pass true if the "mouse" cursor is now over a node 5623 * which wants key events, but it is not the focus. This 5624 * will make the visual appear as though nothing is in 5625 * focus. Remove the WebTextView, if present, and stop 5626 * drawing the blinking caret. 5627 * called by JNI 5628 */ 5629 private void sendMoveMouseIfLatest(boolean removeFocus) { 5630 if (removeFocus) { 5631 clearTextEntry(); 5632 setFocusControllerInactive(); 5633 } 5634 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 5635 cursorData()); 5636 } 5637 5638 // called by JNI 5639 private void sendMotionUp(int touchGeneration, 5640 int frame, int node, int x, int y) { 5641 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5642 touchUpData.mMoveGeneration = touchGeneration; 5643 touchUpData.mFrame = frame; 5644 touchUpData.mNode = node; 5645 touchUpData.mX = x; 5646 touchUpData.mY = y; 5647 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5648 } 5649 5650 5651 private int getScaledMaxXScroll() { 5652 int width; 5653 if (mHeightCanMeasure == false) { 5654 width = getViewWidth() / 4; 5655 } else { 5656 Rect visRect = new Rect(); 5657 calcOurVisibleRect(visRect); 5658 width = visRect.width() / 2; 5659 } 5660 // FIXME the divisor should be retrieved from somewhere 5661 return viewToContentX(width); 5662 } 5663 5664 private int getScaledMaxYScroll() { 5665 int height; 5666 if (mHeightCanMeasure == false) { 5667 height = getViewHeight() / 4; 5668 } else { 5669 Rect visRect = new Rect(); 5670 calcOurVisibleRect(visRect); 5671 height = visRect.height() / 2; 5672 } 5673 // FIXME the divisor should be retrieved from somewhere 5674 // the closest thing today is hard-coded into ScrollView.java 5675 // (from ScrollView.java, line 363) int maxJump = height/2; 5676 return viewToContentY(height); 5677 } 5678 5679 /** 5680 * Called by JNI to invalidate view 5681 */ 5682 private void viewInvalidate() { 5683 invalidate(); 5684 } 5685 5686 // return true if the key was handled 5687 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 5688 long time, boolean ignorePlugin) { 5689 if (mNativeClass == 0) { 5690 return false; 5691 } 5692 if (ignorePlugin == false && nativePluginEatsNavKey()) { 5693 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 5694 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 5695 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 5696 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 5697 , 0, 0, 0); 5698 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5699 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5700 return true; 5701 } 5702 mLastCursorTime = time; 5703 mLastCursorBounds = nativeGetCursorRingBounds(); 5704 boolean keyHandled 5705 = nativeMoveCursor(keyCode, count, noScroll) == false; 5706 if (DebugFlags.WEB_VIEW) { 5707 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 5708 + " mLastCursorTime=" + mLastCursorTime 5709 + " handled=" + keyHandled); 5710 } 5711 if (keyHandled == false || mHeightCanMeasure == false) { 5712 return keyHandled; 5713 } 5714 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 5715 if (contentCursorRingBounds.isEmpty()) return keyHandled; 5716 Rect viewCursorRingBounds = contentToView(contentCursorRingBounds); 5717 Rect visRect = new Rect(); 5718 calcOurVisibleRect(visRect); 5719 Rect outset = new Rect(visRect); 5720 int maxXScroll = visRect.width() / 2; 5721 int maxYScroll = visRect.height() / 2; 5722 outset.inset(-maxXScroll, -maxYScroll); 5723 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 5724 return keyHandled; 5725 } 5726 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 5727 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 5728 maxXScroll); 5729 if (maxH > 0) { 5730 pinScrollBy(maxH, 0, true, 0); 5731 } else { 5732 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 5733 -maxXScroll); 5734 if (maxH < 0) { 5735 pinScrollBy(maxH, 0, true, 0); 5736 } 5737 } 5738 if (mLastCursorBounds.isEmpty()) return keyHandled; 5739 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 5740 return keyHandled; 5741 } 5742 if (DebugFlags.WEB_VIEW) { 5743 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 5744 + contentCursorRingBounds); 5745 } 5746 requestRectangleOnScreen(viewCursorRingBounds); 5747 mUserScroll = true; 5748 return keyHandled; 5749 } 5750 5751 /** 5752 * Set the background color. It's white by default. Pass 5753 * zero to make the view transparent. 5754 * @param color the ARGB color described by Color.java 5755 */ 5756 public void setBackgroundColor(int color) { 5757 mBackgroundColor = color; 5758 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 5759 } 5760 5761 public void debugDump() { 5762 nativeDebugDump(); 5763 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 5764 } 5765 5766 /** 5767 * Update our cache with updatedText. 5768 * @param updatedText The new text to put in our cache. 5769 */ 5770 /* package */ void updateCachedTextfield(String updatedText) { 5771 // Also place our generation number so that when we look at the cache 5772 // we recognize that it is up to date. 5773 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 5774 } 5775 5776 /* package */ native void nativeClearCursor(); 5777 private native void nativeCreate(int ptr); 5778 private native int nativeCursorFramePointer(); 5779 private native Rect nativeCursorNodeBounds(); 5780 /* package */ native int nativeCursorNodePointer(); 5781 /* package */ native boolean nativeCursorMatchesFocus(); 5782 private native boolean nativeCursorIntersects(Rect visibleRect); 5783 private native boolean nativeCursorIsAnchor(); 5784 private native boolean nativeCursorIsPlugin(); 5785 private native boolean nativeCursorIsTextInput(); 5786 private native Point nativeCursorPosition(); 5787 private native String nativeCursorText(); 5788 /** 5789 * Returns true if the native cursor node says it wants to handle key events 5790 * (ala plugins). This can only be called if mNativeClass is non-zero! 5791 */ 5792 private native boolean nativeCursorWantsKeyEvents(); 5793 private native void nativeDebugDump(); 5794 private native void nativeDestroy(); 5795 private native void nativeDrawCursorRing(Canvas content); 5796 private native void nativeDrawMatches(Canvas canvas); 5797 private native void nativeDrawSelection(Canvas content 5798 , int x, int y, boolean extendSelection); 5799 private native void nativeDrawSelectionRegion(Canvas content); 5800 private native void nativeDumpDisplayTree(String urlOrNull); 5801 private native int nativeFindAll(String findLower, String findUpper); 5802 private native void nativeFindNext(boolean forward); 5803 private native boolean nativeFocusCandidateIsPassword(); 5804 private native boolean nativeFocusCandidateIsRtlText(); 5805 private native boolean nativeFocusCandidateIsTextField(); 5806 private native boolean nativeFocusCandidateIsTextInput(); 5807 private native int nativeFocusCandidateMaxLength(); 5808 /* package */ native String nativeFocusCandidateName(); 5809 private native Rect nativeFocusCandidateNodeBounds(); 5810 /* package */ native int nativeFocusCandidatePointer(); 5811 private native String nativeFocusCandidateText(); 5812 private native int nativeFocusCandidateTextSize(); 5813 /* package */ native int nativeFocusNodePointer(); 5814 private native Rect nativeGetCursorRingBounds(); 5815 private native Region nativeGetSelection(); 5816 private native boolean nativeHasCursorNode(); 5817 private native boolean nativeHasFocusNode(); 5818 private native void nativeHideCursor(); 5819 private native String nativeImageURI(int x, int y); 5820 private native void nativeInstrumentReport(); 5821 /* package */ native void nativeMoveCursorToNextTextInput(); 5822 // return true if the page has been scrolled 5823 private native boolean nativeMotionUp(int x, int y, int slop); 5824 // returns false if it handled the key 5825 private native boolean nativeMoveCursor(int keyCode, int count, 5826 boolean noScroll); 5827 private native int nativeMoveGeneration(); 5828 private native void nativeMoveSelection(int x, int y, 5829 boolean extendSelection); 5830 private native boolean nativePluginEatsNavKey(); 5831 // Like many other of our native methods, you must make sure that 5832 // mNativeClass is not null before calling this method. 5833 private native void nativeRecordButtons(boolean focused, 5834 boolean pressed, boolean invalidate); 5835 private native void nativeSelectBestAt(Rect rect); 5836 private native void nativeSetFindIsDown(); 5837 private native void nativeSetFollowedLink(boolean followed); 5838 private native void nativeSetHeightCanMeasure(boolean measure); 5839 // Returns a value corresponding to CachedFrame::ImeAction 5840 /* package */ native int nativeTextFieldAction(); 5841 /** 5842 * Perform a click on a currently focused text input. Since it is already 5843 * focused, there is no need to go through the nativeMotionUp code, which 5844 * may change the Cursor. 5845 */ 5846 private native void nativeTextInputMotionUp(int x, int y); 5847 private native int nativeTextGeneration(); 5848 // Never call this version except by updateCachedTextfield(String) - 5849 // we always want to pass in our generation number. 5850 private native void nativeUpdateCachedTextfield(String updatedText, 5851 int generation); 5852 private native void nativeUpdatePluginReceivesEvents(); 5853 // return NO_LEFTEDGE means failure. 5854 private static final int NO_LEFTEDGE = -1; 5855 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 5856} 5857