WebView.java revision b308137ed0a3402781a1102567a8b8ffa8adc0f7
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.app.AlertDialog; 20import android.content.Context; 21import android.content.DialogInterface; 22import android.content.Intent; 23import android.content.DialogInterface.OnCancelListener; 24import android.database.DataSetObserver; 25import android.graphics.Bitmap; 26import android.graphics.Canvas; 27import android.graphics.Color; 28import android.graphics.Paint; 29import android.graphics.Path; 30import android.graphics.Picture; 31import android.graphics.Point; 32import android.graphics.Rect; 33import android.graphics.Region; 34import android.net.http.SslCertificate; 35import android.net.Uri; 36import android.os.Bundle; 37import android.os.Handler; 38import android.os.Message; 39import android.os.ServiceManager; 40import android.os.SystemClock; 41import android.provider.Checkin; 42import android.text.IClipboard; 43import android.text.Selection; 44import android.text.Spannable; 45import android.util.AttributeSet; 46import android.util.EventLog; 47import android.util.Log; 48import android.view.Gravity; 49import android.view.KeyEvent; 50import android.view.LayoutInflater; 51import android.view.MotionEvent; 52import android.view.SoundEffectConstants; 53import android.view.VelocityTracker; 54import android.view.View; 55import android.view.ViewConfiguration; 56import android.view.ViewGroup; 57import android.view.ViewParent; 58import android.view.ViewTreeObserver; 59import android.view.animation.AlphaAnimation; 60import android.view.inputmethod.InputMethodManager; 61import android.webkit.WebTextView.AutoCompleteAdapter; 62import android.webkit.WebViewCore.EventHub; 63import android.widget.AbsoluteLayout; 64import android.widget.Adapter; 65import android.widget.AdapterView; 66import android.widget.ArrayAdapter; 67import android.widget.FrameLayout; 68import android.widget.ImageView; 69import android.widget.ListView; 70import android.widget.Scroller; 71import android.widget.Toast; 72import android.widget.ZoomButtonsController; 73import android.widget.ZoomControls; 74import android.widget.AdapterView.OnItemClickListener; 75 76import java.io.File; 77import java.io.FileInputStream; 78import java.io.FileNotFoundException; 79import java.io.FileOutputStream; 80import java.io.IOException; 81import java.net.URLDecoder; 82import java.util.ArrayList; 83import java.util.List; 84 85/** 86 * <p>A View that displays web pages. This class is the basis upon which you 87 * can roll your own web browser or simply display some online content within your Activity. 88 * It uses the WebKit rendering engine to display 89 * web pages and includes methods to navigate forward and backward 90 * through a history, zoom in and out, perform text searches and more.</p> 91 * <p>To enable the built-in zoom, set 92 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 93 * (introduced in API version 3). 94 * <p>Note that, in order for your Activity to access the Internet and load web pages 95 * in a WebView, you must add the <var>INTERNET</var> permissions to your 96 * Android Manifest file:</p> 97 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 98 * 99 * <p>This must be a child of the <code><manifest></code> element.</p> 100 * 101 * <h3>Basic usage</h3> 102 * 103 * <p>By default, a WebView provides no browser-like widgets, does not 104 * enable JavaScript and errors will be ignored. If your goal is only 105 * to display some HTML as a part of your UI, this is probably fine; 106 * the user won't need to interact with the web page beyond reading 107 * it, and the web page won't need to interact with the user. If you 108 * actually want a fully blown web browser, then you probably want to 109 * invoke the Browser application with your URL rather than show it 110 * with a WebView. See {@link android.content.Intent} for more information.</p> 111 * 112 * <pre class="prettyprint"> 113 * WebView webview = new WebView(this); 114 * setContentView(webview); 115 * 116 * // Simplest usage: note that an exception will NOT be thrown 117 * // if there is an error loading this page (see below). 118 * webview.loadUrl("http://slashdot.org/"); 119 * 120 * // Of course you can also load from any string: 121 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 122 * webview.loadData(summary, "text/html", "utf-8"); 123 * // ... although note that there are restrictions on what this HTML can do. 124 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 125 * </pre> 126 * 127 * <p>A WebView has several customization points where you can add your 128 * own behavior. These are:</p> 129 * 130 * <ul> 131 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 132 * This class is called when something that might impact a 133 * browser UI happens, for instance, progress updates and 134 * JavaScript alerts are sent here. 135 * </li> 136 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 137 * It will be called when things happen that impact the 138 * rendering of the content, eg, errors or form submissions. You 139 * can also intercept URL loading here.</li> 140 * <li>Via the {@link android.webkit.WebSettings} class, which contains 141 * miscellaneous configuration. </li> 142 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 143 * This lets you bind Java objects into the WebView so they can be 144 * controlled from the web pages JavaScript.</li> 145 * </ul> 146 * 147 * <p>Here's a more complicated example, showing error handling, 148 * settings, and progress notification:</p> 149 * 150 * <pre class="prettyprint"> 151 * // Let's display the progress in the activity title bar, like the 152 * // browser app does. 153 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 154 * 155 * webview.getSettings().setJavaScriptEnabled(true); 156 * 157 * final Activity activity = this; 158 * webview.setWebChromeClient(new WebChromeClient() { 159 * public void onProgressChanged(WebView view, int progress) { 160 * // Activities and WebViews measure progress with different scales. 161 * // The progress meter will automatically disappear when we reach 100% 162 * activity.setProgress(progress * 1000); 163 * } 164 * }); 165 * webview.setWebViewClient(new WebViewClient() { 166 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 167 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 168 * } 169 * }); 170 * 171 * webview.loadUrl("http://slashdot.org/"); 172 * </pre> 173 * 174 * <h3>Cookie and window management</h3> 175 * 176 * <p>For obvious security reasons, your application has its own 177 * cache, cookie store etc - it does not share the Browser 178 * applications data. Cookies are managed on a separate thread, so 179 * operations like index building don't block the UI 180 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 181 * if you want to use cookies in your application. 182 * </p> 183 * 184 * <p>By default, requests by the HTML to open new windows are 185 * ignored. This is true whether they be opened by JavaScript or by 186 * the target attribute on a link. You can customize your 187 * WebChromeClient to provide your own behaviour for opening multiple windows, 188 * and render them in whatever manner you want.</p> 189 * 190 * <p>Standard behavior for an Activity is to be destroyed and 191 * recreated when the devices orientation is changed. This will cause 192 * the WebView to reload the current page. If you don't want that, you 193 * can set your Activity to handle the orientation and keyboardHidden 194 * changes, and then just leave the WebView alone. It'll automatically 195 * re-orient itself as appropriate.</p> 196 */ 197public class WebView extends AbsoluteLayout 198 implements ViewTreeObserver.OnGlobalFocusChangeListener, 199 ViewGroup.OnHierarchyChangeListener { 200 201 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 202 // the screen all-the-time. Good for profiling our drawing code 203 static private final boolean AUTO_REDRAW_HACK = false; 204 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 205 private boolean mAutoRedraw; 206 207 static final String LOGTAG = "webview"; 208 209 static class ScaleLimitData { 210 int mMinScale; 211 int mMaxScale; 212 } 213 214 private static class ExtendedZoomControls extends FrameLayout { 215 public ExtendedZoomControls(Context context, AttributeSet attrs) { 216 super(context, attrs); 217 LayoutInflater inflater = (LayoutInflater) 218 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 219 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 220 mPlusMinusZoomControls = (ZoomControls) findViewById( 221 com.android.internal.R.id.zoomControls); 222 mZoomMagnify = (ImageView) findViewById(com.android.internal.R.id.zoomMagnify); 223 } 224 225 public void show(boolean showZoom, boolean canZoomOut) { 226 mPlusMinusZoomControls.setVisibility( 227 showZoom ? View.VISIBLE : View.GONE); 228 mZoomMagnify.setVisibility(canZoomOut ? View.VISIBLE : View.GONE); 229 fade(View.VISIBLE, 0.0f, 1.0f); 230 } 231 232 public void hide() { 233 fade(View.GONE, 1.0f, 0.0f); 234 } 235 236 private void fade(int visibility, float startAlpha, float endAlpha) { 237 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 238 anim.setDuration(500); 239 startAnimation(anim); 240 setVisibility(visibility); 241 } 242 243 public void setIsZoomMagnifyEnabled(boolean isEnabled) { 244 mZoomMagnify.setEnabled(isEnabled); 245 } 246 247 public boolean hasFocus() { 248 return mPlusMinusZoomControls.hasFocus() || mZoomMagnify.hasFocus(); 249 } 250 251 public void setOnZoomInClickListener(OnClickListener listener) { 252 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 253 } 254 255 public void setOnZoomOutClickListener(OnClickListener listener) { 256 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 257 } 258 259 public void setOnZoomMagnifyClickListener(OnClickListener listener) { 260 mZoomMagnify.setOnClickListener(listener); 261 } 262 263 ZoomControls mPlusMinusZoomControls; 264 ImageView mZoomMagnify; 265 } 266 267 /** 268 * Transportation object for returning WebView across thread boundaries. 269 */ 270 public class WebViewTransport { 271 private WebView mWebview; 272 273 /** 274 * Set the WebView to the transportation object. 275 * @param webview The WebView to transport. 276 */ 277 public synchronized void setWebView(WebView webview) { 278 mWebview = webview; 279 } 280 281 /** 282 * Return the WebView object. 283 * @return WebView The transported WebView object. 284 */ 285 public synchronized WebView getWebView() { 286 return mWebview; 287 } 288 } 289 290 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 291 private final CallbackProxy mCallbackProxy; 292 293 private final WebViewDatabase mDatabase; 294 295 // SSL certificate for the main top-level page (if secure) 296 private SslCertificate mCertificate; 297 298 // Native WebView pointer that is 0 until the native object has been 299 // created. 300 private int mNativeClass; 301 // This would be final but it needs to be set to null when the WebView is 302 // destroyed. 303 private WebViewCore mWebViewCore; 304 // Handler for dispatching UI messages. 305 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 306 private WebTextView mWebTextView; 307 // Used to ignore changes to webkit text that arrives to the UI side after 308 // more key events. 309 private int mTextGeneration; 310 311 // The list of loaded plugins. 312 private static PluginList sPluginList; 313 314 /** 315 * Position of the last touch event. 316 */ 317 private float mLastTouchX; 318 private float mLastTouchY; 319 320 /** 321 * Time of the last touch event. 322 */ 323 private long mLastTouchTime; 324 325 /** 326 * Time of the last time sending touch event to WebViewCore 327 */ 328 private long mLastSentTouchTime; 329 330 /** 331 * The minimum elapsed time before sending another ACTION_MOVE event to 332 * WebViewCore. This really should be tuned for each type of the devices. 333 * For example in Google Map api test case, it takes Dream device at least 334 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 335 * triggering the layout and drawing the picture. While the same process 336 * takes 60+ms on the current high speed device. If we make 337 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 338 * to WebViewCore queue and the real layout and draw events will be pushed 339 * to further, which slows down the refresh rate. Choose 50 to favor the 340 * current high speed devices. For Dream like devices, 100 is a better 341 * choice. Maybe make this in the buildspec later. 342 */ 343 private static final int TOUCH_SENT_INTERVAL = 50; 344 345 /** 346 * Helper class to get velocity for fling 347 */ 348 VelocityTracker mVelocityTracker; 349 350 /** 351 * Touch mode 352 */ 353 private int mTouchMode = TOUCH_DONE_MODE; 354 private static final int TOUCH_INIT_MODE = 1; 355 private static final int TOUCH_DRAG_START_MODE = 2; 356 private static final int TOUCH_DRAG_MODE = 3; 357 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 358 private static final int TOUCH_SHORTPRESS_MODE = 5; 359 private static final int TOUCH_DOUBLECLICK_MODE = 6; 360 private static final int TOUCH_DONE_MODE = 7; 361 private static final int TOUCH_SELECT_MODE = 8; 362 // touch mode values specific to scale+scroll 363 private static final int FIRST_SCROLL_ZOOM = 9; 364 private static final int SCROLL_ZOOM_ANIMATION_IN = 9; 365 private static final int SCROLL_ZOOM_ANIMATION_OUT = 10; 366 private static final int SCROLL_ZOOM_OUT = 11; 367 private static final int LAST_SCROLL_ZOOM = 11; 368 // end of touch mode values specific to scale+scroll 369 370 // Whether to forward the touch events to WebCore 371 private boolean mForwardTouchEvents = false; 372 373 // Whether to prevent drag during touch. The initial value depends on 374 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 375 // take control of touch events unless it says no for touch down event. 376 private boolean mPreventDrag; 377 378 // Whether or not to draw the cursor ring. 379 private boolean mDrawCursorRing = true; 380 381 // true if onPause has been called (and not onResume) 382 private boolean mIsPaused; 383 384 /** 385 * Customizable constant 386 */ 387 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 388 private int mTouchSlopSquare; 389 // pre-computed density adjusted navigation slop 390 private int mNavSlop; 391 // This should be ViewConfiguration.getTapTimeout() 392 // But system time out is 100ms, which is too short for the browser. 393 // In the browser, if it switches out of tap too soon, jump tap won't work. 394 private static final int TAP_TIMEOUT = 200; 395 // This should be ViewConfiguration.getLongPressTimeout() 396 // But system time out is 500ms, which is too short for the browser. 397 // With a short timeout, it's difficult to treat trigger a short press. 398 private static final int LONG_PRESS_TIMEOUT = 1000; 399 // needed to avoid flinging after a pause of no movement 400 private static final int MIN_FLING_TIME = 250; 401 // The time that the Zoom Controls are visible before fading away 402 private static final long ZOOM_CONTROLS_TIMEOUT = 403 ViewConfiguration.getZoomControlsTimeout(); 404 // The amount of content to overlap between two screens when going through 405 // pages with the space bar, in pixels. 406 private static final int PAGE_SCROLL_OVERLAP = 24; 407 408 /** 409 * These prevent calling requestLayout if either dimension is fixed. This 410 * depends on the layout parameters and the measure specs. 411 */ 412 boolean mWidthCanMeasure; 413 boolean mHeightCanMeasure; 414 415 // Remember the last dimensions we sent to the native side so we can avoid 416 // sending the same dimensions more than once. 417 int mLastWidthSent; 418 int mLastHeightSent; 419 420 private int mContentWidth; // cache of value from WebViewCore 421 private int mContentHeight; // cache of value from WebViewCore 422 423 // Need to have the separate control for horizontal and vertical scrollbar 424 // style than the View's single scrollbar style 425 private boolean mOverlayHorizontalScrollbar = true; 426 private boolean mOverlayVerticalScrollbar = false; 427 428 // our standard speed. this way small distances will be traversed in less 429 // time than large distances, but we cap the duration, so that very large 430 // distances won't take too long to get there. 431 private static final int STD_SPEED = 480; // pixels per second 432 // time for the longest scroll animation 433 private static final int MAX_DURATION = 750; // milliseconds 434 private Scroller mScroller; 435 436 private boolean mWrapContent; 437 438 /** 439 * Private message ids 440 */ 441 private static final int REMEMBER_PASSWORD = 1; 442 private static final int NEVER_REMEMBER_PASSWORD = 2; 443 private static final int SWITCH_TO_SHORTPRESS = 3; 444 private static final int SWITCH_TO_LONGPRESS = 4; 445 private static final int REQUEST_FORM_DATA = 6; 446 private static final int SWITCH_TO_CLICK = 7; 447 private static final int RESUME_WEBCORE_UPDATE = 8; 448 449 //! arg1=x, arg2=y 450 static final int SCROLL_TO_MSG_ID = 10; 451 static final int SCROLL_BY_MSG_ID = 11; 452 //! arg1=x, arg2=y 453 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 454 //! arg1=x, arg2=y 455 static final int SYNC_SCROLL_TO_MSG_ID = 13; 456 static final int NEW_PICTURE_MSG_ID = 14; 457 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 458 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 459 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 460 static final int DID_FIRST_LAYOUT_MSG_ID = 18; 461 static final int MOVE_OUT_OF_PLUGIN = 19; 462 static final int CLEAR_TEXT_ENTRY = 20; 463 464 static final int UPDATE_CLIPBOARD = 22; 465 static final int LONG_PRESS_CENTER = 23; 466 static final int PREVENT_TOUCH_ID = 24; 467 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 468 // obj=Rect in doc coordinates 469 static final int INVAL_RECT_MSG_ID = 26; 470 static final int REQUEST_KEYBOARD = 27; 471 472 static final String[] HandlerDebugString = { 473 "REMEMBER_PASSWORD", // = 1; 474 "NEVER_REMEMBER_PASSWORD", // = 2; 475 "SWITCH_TO_SHORTPRESS", // = 3; 476 "SWITCH_TO_LONGPRESS", // = 4; 477 "5", 478 "REQUEST_FORM_DATA", // = 6; 479 "SWITCH_TO_CLICK", // = 7; 480 "RESUME_WEBCORE_UPDATE", // = 8; 481 "9", 482 "SCROLL_TO_MSG_ID", // = 10; 483 "SCROLL_BY_MSG_ID", // = 11; 484 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 485 "SYNC_SCROLL_TO_MSG_ID", // = 13; 486 "NEW_PICTURE_MSG_ID", // = 14; 487 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 488 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 489 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 490 "DID_FIRST_LAYOUT_MSG_ID", // = 18; 491 "MOVE_OUT_OF_PLUGIN", // = 19; 492 "CLEAR_TEXT_ENTRY", // = 20; 493 "21", // = 21; 494 "UPDATE_CLIPBOARD", // = 22; 495 "LONG_PRESS_CENTER", // = 23; 496 "PREVENT_TOUCH_ID", // = 24; 497 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 498 "INVAL_RECT_MSG_ID", // = 26; 499 "REQUEST_KEYBOARD" // = 27; 500 }; 501 502 // width which view is considered to be fully zoomed out 503 static final int ZOOM_OUT_WIDTH = 1008; 504 505 // default scale limit. Depending on the display density 506 private static float DEFAULT_MAX_ZOOM_SCALE; 507 private static float DEFAULT_MIN_ZOOM_SCALE; 508 // scale limit, which can be set through viewport meta tag in the web page 509 private float mMaxZoomScale; 510 private float mMinZoomScale; 511 private boolean mMinZoomScaleFixed = false; 512 513 // initial scale in percent. 0 means using default. 514 private int mInitialScale = 0; 515 516 // default scale. Depending on the display density. 517 static int DEFAULT_SCALE_PERCENT; 518 private float mDefaultScale; 519 520 // set to true temporarily while the zoom control is being dragged 521 private boolean mPreviewZoomOnly = false; 522 523 // computed scale and inverse, from mZoomWidth. 524 private float mActualScale; 525 private float mInvActualScale; 526 // if this is non-zero, it is used on drawing rather than mActualScale 527 private float mZoomScale; 528 private float mInvInitialZoomScale; 529 private float mInvFinalZoomScale; 530 private long mZoomStart; 531 private static final int ZOOM_ANIMATION_LENGTH = 500; 532 533 private boolean mUserScroll = false; 534 535 private int mSnapScrollMode = SNAP_NONE; 536 private static final int SNAP_NONE = 1; 537 private static final int SNAP_X = 2; 538 private static final int SNAP_Y = 3; 539 private static final int SNAP_X_LOCK = 4; 540 private static final int SNAP_Y_LOCK = 5; 541 private boolean mSnapPositive; 542 543 // Used to match key downs and key ups 544 private boolean mGotKeyDown; 545 546 /* package */ static boolean mLogEvent = true; 547 private static final int EVENT_LOG_ZOOM_LEVEL_CHANGE = 70101; 548 private static final int EVENT_LOG_DOUBLE_TAP_DURATION = 70102; 549 550 // for event log 551 private long mLastTouchUpTime = 0; 552 553 /** 554 * URI scheme for telephone number 555 */ 556 public static final String SCHEME_TEL = "tel:"; 557 /** 558 * URI scheme for email address 559 */ 560 public static final String SCHEME_MAILTO = "mailto:"; 561 /** 562 * URI scheme for map address 563 */ 564 public static final String SCHEME_GEO = "geo:0,0?q="; 565 566 private int mBackgroundColor = Color.WHITE; 567 568 // Used to notify listeners of a new picture. 569 private PictureListener mPictureListener; 570 /** 571 * Interface to listen for new pictures as they change. 572 */ 573 public interface PictureListener { 574 /** 575 * Notify the listener that the picture has changed. 576 * @param view The WebView that owns the picture. 577 * @param picture The new picture. 578 */ 579 public void onNewPicture(WebView view, Picture picture); 580 } 581 582 // FIXME: Want to make this public, but need to change the API file. 583 public /*static*/ class HitTestResult { 584 /** 585 * Default HitTestResult, where the target is unknown 586 */ 587 public static final int UNKNOWN_TYPE = 0; 588 /** 589 * HitTestResult for hitting a HTML::a tag 590 */ 591 public static final int ANCHOR_TYPE = 1; 592 /** 593 * HitTestResult for hitting a phone number 594 */ 595 public static final int PHONE_TYPE = 2; 596 /** 597 * HitTestResult for hitting a map address 598 */ 599 public static final int GEO_TYPE = 3; 600 /** 601 * HitTestResult for hitting an email address 602 */ 603 public static final int EMAIL_TYPE = 4; 604 /** 605 * HitTestResult for hitting an HTML::img tag 606 */ 607 public static final int IMAGE_TYPE = 5; 608 /** 609 * HitTestResult for hitting a HTML::a tag which contains HTML::img 610 */ 611 public static final int IMAGE_ANCHOR_TYPE = 6; 612 /** 613 * HitTestResult for hitting a HTML::a tag with src=http 614 */ 615 public static final int SRC_ANCHOR_TYPE = 7; 616 /** 617 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 618 */ 619 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 620 /** 621 * HitTestResult for hitting an edit text area 622 */ 623 public static final int EDIT_TEXT_TYPE = 9; 624 625 private int mType; 626 private String mExtra; 627 628 HitTestResult() { 629 mType = UNKNOWN_TYPE; 630 } 631 632 private void setType(int type) { 633 mType = type; 634 } 635 636 private void setExtra(String extra) { 637 mExtra = extra; 638 } 639 640 public int getType() { 641 return mType; 642 } 643 644 public String getExtra() { 645 return mExtra; 646 } 647 } 648 649 // The View containing the zoom controls 650 private ExtendedZoomControls mZoomControls; 651 private Runnable mZoomControlRunnable; 652 653 private ZoomButtonsController mZoomButtonsController; 654 655 // These keep track of the center point of the zoom. They are used to 656 // determine the point around which we should zoom. 657 private float mZoomCenterX; 658 private float mZoomCenterY; 659 660 private ZoomButtonsController.OnZoomListener mZoomListener = 661 new ZoomButtonsController.OnZoomListener() { 662 663 public void onVisibilityChanged(boolean visible) { 664 if (visible) { 665 switchOutDrawHistory(); 666 updateZoomButtonsEnabled(); 667 } 668 } 669 670 public void onZoom(boolean zoomIn) { 671 if (zoomIn) { 672 zoomIn(); 673 } else { 674 zoomOut(); 675 } 676 677 updateZoomButtonsEnabled(); 678 } 679 }; 680 681 /** 682 * Construct a new WebView with a Context object. 683 * @param context A Context object used to access application assets. 684 */ 685 public WebView(Context context) { 686 this(context, null); 687 } 688 689 /** 690 * Construct a new WebView with layout parameters. 691 * @param context A Context object used to access application assets. 692 * @param attrs An AttributeSet passed to our parent. 693 */ 694 public WebView(Context context, AttributeSet attrs) { 695 this(context, attrs, com.android.internal.R.attr.webViewStyle); 696 } 697 698 /** 699 * Construct a new WebView with layout parameters and a default style. 700 * @param context A Context object used to access application assets. 701 * @param attrs An AttributeSet passed to our parent. 702 * @param defStyle The default style resource ID. 703 */ 704 public WebView(Context context, AttributeSet attrs, int defStyle) { 705 super(context, attrs, defStyle); 706 init(); 707 708 mCallbackProxy = new CallbackProxy(context, this); 709 mWebViewCore = new WebViewCore(context, this, mCallbackProxy); 710 mDatabase = WebViewDatabase.getInstance(context); 711 mScroller = new Scroller(context); 712 713 mZoomButtonsController = new ZoomButtonsController(this); 714 mZoomButtonsController.setOnZoomListener(mZoomListener); 715 // ZoomButtonsController positions the buttons at the bottom, but in 716 // the middle. Change their layout parameters so they appear on the 717 // right. 718 View controls = mZoomButtonsController.getZoomControls(); 719 ViewGroup.LayoutParams params = controls.getLayoutParams(); 720 if (params instanceof FrameLayout.LayoutParams) { 721 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 722 params; 723 frameParams.gravity = Gravity.RIGHT; 724 } 725 } 726 727 private void updateZoomButtonsEnabled() { 728 boolean canZoomIn = mActualScale < mMaxZoomScale; 729 boolean canZoomOut = mActualScale > mMinZoomScale; 730 if (!canZoomIn && !canZoomOut) { 731 // Hide the zoom in and out buttons, as well as the fit to page 732 // button, if the page cannot zoom 733 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 734 } else { 735 // Bring back the hidden zoom controls. 736 mZoomButtonsController.getZoomControls() 737 .setVisibility(View.VISIBLE); 738 // Set each one individually, as a page may be able to zoom in 739 // or out. 740 mZoomButtonsController.setZoomInEnabled(canZoomIn); 741 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 742 } 743 } 744 745 private void init() { 746 setWillNotDraw(false); 747 setFocusable(true); 748 setFocusableInTouchMode(true); 749 setClickable(true); 750 setLongClickable(true); 751 752 final int slop = ViewConfiguration.get(getContext()).getScaledTouchSlop(); 753 mTouchSlopSquare = slop * slop; 754 mMinLockSnapReverseDistance = slop; 755 final float density = getContext().getResources().getDisplayMetrics().density; 756 // use one line height, 16 based on our current default font, for how 757 // far we allow a touch be away from the edge of a link 758 mNavSlop = (int) (16 * density); 759 // density adjusted scale factors 760 DEFAULT_SCALE_PERCENT = (int) (100 * density); 761 mDefaultScale = density; 762 mActualScale = density; 763 mInvActualScale = 1 / density; 764 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 765 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 766 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 767 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 768 } 769 770 /* package */void updateDefaultZoomDensity(int zoomDensity) { 771 final float density = getContext().getResources().getDisplayMetrics().density 772 * 100 / zoomDensity; 773 if (Math.abs(density - mDefaultScale) > 0.01) { 774 float scaleFactor = density / mDefaultScale; 775 // adjust the limits 776 mNavSlop = (int) (16 * density); 777 DEFAULT_SCALE_PERCENT = (int) (100 * density); 778 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 779 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 780 mDefaultScale = density; 781 mMaxZoomScale *= scaleFactor; 782 mMinZoomScale *= scaleFactor; 783 setNewZoomScale(mActualScale * scaleFactor, false); 784 } 785 } 786 787 /* package */ boolean onSavePassword(String schemePlusHost, String username, 788 String password, final Message resumeMsg) { 789 boolean rVal = false; 790 if (resumeMsg == null) { 791 // null resumeMsg implies saving password silently 792 mDatabase.setUsernamePassword(schemePlusHost, username, password); 793 } else { 794 final Message remember = mPrivateHandler.obtainMessage( 795 REMEMBER_PASSWORD); 796 remember.getData().putString("host", schemePlusHost); 797 remember.getData().putString("username", username); 798 remember.getData().putString("password", password); 799 remember.obj = resumeMsg; 800 801 final Message neverRemember = mPrivateHandler.obtainMessage( 802 NEVER_REMEMBER_PASSWORD); 803 neverRemember.getData().putString("host", schemePlusHost); 804 neverRemember.getData().putString("username", username); 805 neverRemember.getData().putString("password", password); 806 neverRemember.obj = resumeMsg; 807 808 new AlertDialog.Builder(getContext()) 809 .setTitle(com.android.internal.R.string.save_password_label) 810 .setMessage(com.android.internal.R.string.save_password_message) 811 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 812 new DialogInterface.OnClickListener() { 813 public void onClick(DialogInterface dialog, int which) { 814 resumeMsg.sendToTarget(); 815 } 816 }) 817 .setNeutralButton(com.android.internal.R.string.save_password_remember, 818 new DialogInterface.OnClickListener() { 819 public void onClick(DialogInterface dialog, int which) { 820 remember.sendToTarget(); 821 } 822 }) 823 .setNegativeButton(com.android.internal.R.string.save_password_never, 824 new DialogInterface.OnClickListener() { 825 public void onClick(DialogInterface dialog, int which) { 826 neverRemember.sendToTarget(); 827 } 828 }) 829 .setOnCancelListener(new OnCancelListener() { 830 public void onCancel(DialogInterface dialog) { 831 resumeMsg.sendToTarget(); 832 } 833 }).show(); 834 // Return true so that WebViewCore will pause while the dialog is 835 // up. 836 rVal = true; 837 } 838 return rVal; 839 } 840 841 @Override 842 public void setScrollBarStyle(int style) { 843 if (style == View.SCROLLBARS_INSIDE_INSET 844 || style == View.SCROLLBARS_OUTSIDE_INSET) { 845 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 846 } else { 847 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 848 } 849 super.setScrollBarStyle(style); 850 } 851 852 /** 853 * Specify whether the horizontal scrollbar has overlay style. 854 * @param overlay TRUE if horizontal scrollbar should have overlay style. 855 */ 856 public void setHorizontalScrollbarOverlay(boolean overlay) { 857 mOverlayHorizontalScrollbar = overlay; 858 } 859 860 /** 861 * Specify whether the vertical scrollbar has overlay style. 862 * @param overlay TRUE if vertical scrollbar should have overlay style. 863 */ 864 public void setVerticalScrollbarOverlay(boolean overlay) { 865 mOverlayVerticalScrollbar = overlay; 866 } 867 868 /** 869 * Return whether horizontal scrollbar has overlay style 870 * @return TRUE if horizontal scrollbar has overlay style. 871 */ 872 public boolean overlayHorizontalScrollbar() { 873 return mOverlayHorizontalScrollbar; 874 } 875 876 /** 877 * Return whether vertical scrollbar has overlay style 878 * @return TRUE if vertical scrollbar has overlay style. 879 */ 880 public boolean overlayVerticalScrollbar() { 881 return mOverlayVerticalScrollbar; 882 } 883 884 /* 885 * Return the width of the view where the content of WebView should render 886 * to. 887 */ 888 private int getViewWidth() { 889 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 890 return getWidth(); 891 } else { 892 return getWidth() - getVerticalScrollbarWidth(); 893 } 894 } 895 896 /* 897 * Return the height of the view where the content of WebView should render 898 * to. 899 */ 900 private int getViewHeight() { 901 if (!isHorizontalScrollBarEnabled() || mOverlayHorizontalScrollbar) { 902 return getHeight(); 903 } else { 904 return getHeight() - getHorizontalScrollbarHeight(); 905 } 906 } 907 908 /** 909 * @return The SSL certificate for the main top-level page or null if 910 * there is no certificate (the site is not secure). 911 */ 912 public SslCertificate getCertificate() { 913 return mCertificate; 914 } 915 916 /** 917 * Sets the SSL certificate for the main top-level page. 918 */ 919 public void setCertificate(SslCertificate certificate) { 920 // here, the certificate can be null (if the site is not secure) 921 mCertificate = certificate; 922 } 923 924 //------------------------------------------------------------------------- 925 // Methods called by activity 926 //------------------------------------------------------------------------- 927 928 /** 929 * Save the username and password for a particular host in the WebView's 930 * internal database. 931 * @param host The host that required the credentials. 932 * @param username The username for the given host. 933 * @param password The password for the given host. 934 */ 935 public void savePassword(String host, String username, String password) { 936 mDatabase.setUsernamePassword(host, username, password); 937 } 938 939 /** 940 * Set the HTTP authentication credentials for a given host and realm. 941 * 942 * @param host The host for the credentials. 943 * @param realm The realm for the credentials. 944 * @param username The username for the password. If it is null, it means 945 * password can't be saved. 946 * @param password The password 947 */ 948 public void setHttpAuthUsernamePassword(String host, String realm, 949 String username, String password) { 950 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 951 } 952 953 /** 954 * Retrieve the HTTP authentication username and password for a given 955 * host & realm pair 956 * 957 * @param host The host for which the credentials apply. 958 * @param realm The realm for which the credentials apply. 959 * @return String[] if found, String[0] is username, which can be null and 960 * String[1] is password. Return null if it can't find anything. 961 */ 962 public String[] getHttpAuthUsernamePassword(String host, String realm) { 963 return mDatabase.getHttpAuthUsernamePassword(host, realm); 964 } 965 966 /** 967 * Destroy the internal state of the WebView. This method should be called 968 * after the WebView has been removed from the view system. No other 969 * methods may be called on a WebView after destroy. 970 */ 971 public void destroy() { 972 clearTextEntry(); 973 if (mWebViewCore != null) { 974 // Set the handlers to null before destroying WebViewCore so no 975 // more messages will be posted. 976 mCallbackProxy.setWebViewClient(null); 977 mCallbackProxy.setWebChromeClient(null); 978 // Tell WebViewCore to destroy itself 979 WebViewCore webViewCore = mWebViewCore; 980 mWebViewCore = null; // prevent using partial webViewCore 981 webViewCore.destroy(); 982 // Remove any pending messages that might not be serviced yet. 983 mPrivateHandler.removeCallbacksAndMessages(null); 984 mCallbackProxy.removeCallbacksAndMessages(null); 985 // Wake up the WebCore thread just in case it is waiting for a 986 // javascript dialog. 987 synchronized (mCallbackProxy) { 988 mCallbackProxy.notify(); 989 } 990 } 991 if (mNativeClass != 0) { 992 nativeDestroy(); 993 mNativeClass = 0; 994 } 995 } 996 997 /** 998 * Enables platform notifications of data state and proxy changes. 999 */ 1000 public static void enablePlatformNotifications() { 1001 Network.enablePlatformNotifications(); 1002 } 1003 1004 /** 1005 * If platform notifications are enabled, this should be called 1006 * from the Activity's onPause() or onStop(). 1007 */ 1008 public static void disablePlatformNotifications() { 1009 Network.disablePlatformNotifications(); 1010 } 1011 1012 /** 1013 * Sets JavaScript engine flags. 1014 * 1015 * @param flags JS engine flags in a String 1016 * 1017 * @hide pending API solidification 1018 */ 1019 public void setJsFlags(String flags) { 1020 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1021 } 1022 1023 /** 1024 * Inform WebView of the network state. This is used to set 1025 * the javascript property window.navigator.isOnline and 1026 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1027 * @param networkUp boolean indicating if network is available 1028 */ 1029 public void setNetworkAvailable(boolean networkUp) { 1030 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1031 networkUp ? 1 : 0, 0); 1032 } 1033 1034 /** 1035 * Save the state of this WebView used in 1036 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1037 * method no longer stores the display data for this WebView. The previous 1038 * behavior could potentially leak files if {@link #restoreState} was never 1039 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1040 * and restoring the display data. 1041 * @param outState The Bundle to store the WebView state. 1042 * @return The same copy of the back/forward list used to save the state. If 1043 * saveState fails, the returned list will be null. 1044 * @see #savePicture 1045 * @see #restorePicture 1046 */ 1047 public WebBackForwardList saveState(Bundle outState) { 1048 if (outState == null) { 1049 return null; 1050 } 1051 // We grab a copy of the back/forward list because a client of WebView 1052 // may have invalidated the history list by calling clearHistory. 1053 WebBackForwardList list = copyBackForwardList(); 1054 final int currentIndex = list.getCurrentIndex(); 1055 final int size = list.getSize(); 1056 // We should fail saving the state if the list is empty or the index is 1057 // not in a valid range. 1058 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1059 return null; 1060 } 1061 outState.putInt("index", currentIndex); 1062 // FIXME: This should just be a byte[][] instead of ArrayList but 1063 // Parcel.java does not have the code to handle multi-dimensional 1064 // arrays. 1065 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1066 for (int i = 0; i < size; i++) { 1067 WebHistoryItem item = list.getItemAtIndex(i); 1068 byte[] data = item.getFlattenedData(); 1069 if (data == null) { 1070 // It would be very odd to not have any data for a given history 1071 // item. And we will fail to rebuild the history list without 1072 // flattened data. 1073 return null; 1074 } 1075 history.add(data); 1076 } 1077 outState.putSerializable("history", history); 1078 if (mCertificate != null) { 1079 outState.putBundle("certificate", 1080 SslCertificate.saveState(mCertificate)); 1081 } 1082 return list; 1083 } 1084 1085 /** 1086 * Save the current display data to the Bundle given. Used in conjunction 1087 * with {@link #saveState}. 1088 * @param b A Bundle to store the display data. 1089 * @param dest The file to store the serialized picture data. Will be 1090 * overwritten with this WebView's picture data. 1091 * @return True if the picture was successfully saved. 1092 */ 1093 public boolean savePicture(Bundle b, File dest) { 1094 if (dest == null || b == null) { 1095 return false; 1096 } 1097 final Picture p = capturePicture(); 1098 try { 1099 final FileOutputStream out = new FileOutputStream(dest); 1100 p.writeToStream(out); 1101 out.close(); 1102 } catch (FileNotFoundException e){ 1103 e.printStackTrace(); 1104 } catch (IOException e) { 1105 e.printStackTrace(); 1106 } catch (RuntimeException e) { 1107 e.printStackTrace(); 1108 } 1109 if (dest.length() > 0) { 1110 b.putInt("scrollX", mScrollX); 1111 b.putInt("scrollY", mScrollY); 1112 b.putFloat("scale", mActualScale); 1113 return true; 1114 } 1115 return false; 1116 } 1117 1118 /** 1119 * Restore the display data that was save in {@link #savePicture}. Used in 1120 * conjunction with {@link #restoreState}. 1121 * @param b A Bundle containing the saved display data. 1122 * @param src The file where the picture data was stored. 1123 * @return True if the picture was successfully restored. 1124 */ 1125 public boolean restorePicture(Bundle b, File src) { 1126 if (src == null || b == null) { 1127 return false; 1128 } 1129 if (src.exists()) { 1130 Picture p = null; 1131 try { 1132 final FileInputStream in = new FileInputStream(src); 1133 p = Picture.createFromStream(in); 1134 in.close(); 1135 } catch (FileNotFoundException e){ 1136 e.printStackTrace(); 1137 } catch (RuntimeException e) { 1138 e.printStackTrace(); 1139 } catch (IOException e) { 1140 e.printStackTrace(); 1141 } 1142 if (p != null) { 1143 int sx = b.getInt("scrollX", 0); 1144 int sy = b.getInt("scrollY", 0); 1145 float scale = b.getFloat("scale", 1.0f); 1146 mDrawHistory = true; 1147 mHistoryPicture = p; 1148 mScrollX = sx; 1149 mScrollY = sy; 1150 mHistoryWidth = Math.round(p.getWidth() * scale); 1151 mHistoryHeight = Math.round(p.getHeight() * scale); 1152 // as getWidth() / getHeight() of the view are not 1153 // available yet, set up mActualScale, so that when 1154 // onSizeChanged() is called, the rest will be set 1155 // correctly 1156 mActualScale = scale; 1157 invalidate(); 1158 return true; 1159 } 1160 } 1161 return false; 1162 } 1163 1164 /** 1165 * Restore the state of this WebView from the given map used in 1166 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1167 * be called to restore the state of the WebView before using the object. If 1168 * it is called after the WebView has had a chance to build state (load 1169 * pages, create a back/forward list, etc.) there may be undesirable 1170 * side-effects. Please note that this method no longer restores the 1171 * display data for this WebView. See {@link #savePicture} and {@link 1172 * #restorePicture} for saving and restoring the display data. 1173 * @param inState The incoming Bundle of state. 1174 * @return The restored back/forward list or null if restoreState failed. 1175 * @see #savePicture 1176 * @see #restorePicture 1177 */ 1178 public WebBackForwardList restoreState(Bundle inState) { 1179 WebBackForwardList returnList = null; 1180 if (inState == null) { 1181 return returnList; 1182 } 1183 if (inState.containsKey("index") && inState.containsKey("history")) { 1184 mCertificate = SslCertificate.restoreState( 1185 inState.getBundle("certificate")); 1186 1187 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1188 final int index = inState.getInt("index"); 1189 // We can't use a clone of the list because we need to modify the 1190 // shared copy, so synchronize instead to prevent concurrent 1191 // modifications. 1192 synchronized (list) { 1193 final List<byte[]> history = 1194 (List<byte[]>) inState.getSerializable("history"); 1195 final int size = history.size(); 1196 // Check the index bounds so we don't crash in native code while 1197 // restoring the history index. 1198 if (index < 0 || index >= size) { 1199 return null; 1200 } 1201 for (int i = 0; i < size; i++) { 1202 byte[] data = history.remove(0); 1203 if (data == null) { 1204 // If we somehow have null data, we cannot reconstruct 1205 // the item and thus our history list cannot be rebuilt. 1206 return null; 1207 } 1208 WebHistoryItem item = new WebHistoryItem(data); 1209 list.addHistoryItem(item); 1210 } 1211 // Grab the most recent copy to return to the caller. 1212 returnList = copyBackForwardList(); 1213 // Update the copy to have the correct index. 1214 returnList.setCurrentIndex(index); 1215 } 1216 // Remove all pending messages because we are restoring previous 1217 // state. 1218 mWebViewCore.removeMessages(); 1219 // Send a restore state message. 1220 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1221 } 1222 return returnList; 1223 } 1224 1225 /** 1226 * Load the given url. 1227 * @param url The url of the resource to load. 1228 */ 1229 public void loadUrl(String url) { 1230 switchOutDrawHistory(); 1231 mWebViewCore.sendMessage(EventHub.LOAD_URL, url); 1232 clearTextEntry(); 1233 } 1234 1235 /** 1236 * Load the url with postData using "POST" method into the WebView. If url 1237 * is not a network url, it will be loaded with {link 1238 * {@link #loadUrl(String)} instead. 1239 * 1240 * @param url The url of the resource to load. 1241 * @param postData The data will be passed to "POST" request. 1242 * 1243 * @hide pending API solidification 1244 */ 1245 public void postUrl(String url, byte[] postData) { 1246 if (URLUtil.isNetworkUrl(url)) { 1247 switchOutDrawHistory(); 1248 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1249 arg.mUrl = url; 1250 arg.mPostData = postData; 1251 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1252 clearTextEntry(); 1253 } else { 1254 loadUrl(url); 1255 } 1256 } 1257 1258 /** 1259 * Load the given data into the WebView. This will load the data into 1260 * WebView using the data: scheme. Content loaded through this mechanism 1261 * does not have the ability to load content from the network. 1262 * @param data A String of data in the given encoding. 1263 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1264 * @param encoding The encoding of the data. i.e. utf-8, base64 1265 */ 1266 public void loadData(String data, String mimeType, String encoding) { 1267 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1268 } 1269 1270 /** 1271 * Load the given data into the WebView, use the provided URL as the base 1272 * URL for the content. The base URL is the URL that represents the page 1273 * that is loaded through this interface. As such, it is used for the 1274 * history entry and to resolve any relative URLs. The failUrl is used if 1275 * browser fails to load the data provided. If it is empty or null, and the 1276 * load fails, then no history entry is created. 1277 * <p> 1278 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1279 * files through "file:///android_asset/" for the sub resources is more 1280 * restricted. If you provide null or empty string as baseUrl, you won't be 1281 * able to access asset files. If the baseUrl is anything other than 1282 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1283 * sub resources. 1284 * 1285 * @param baseUrl Url to resolve relative paths with, if null defaults to 1286 * "about:blank" 1287 * @param data A String of data in the given encoding. 1288 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1289 * defaults to "text/html" 1290 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1291 * @param failUrl URL to use if the content fails to load or null. 1292 */ 1293 public void loadDataWithBaseURL(String baseUrl, String data, 1294 String mimeType, String encoding, String failUrl) { 1295 1296 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1297 loadData(data, mimeType, encoding); 1298 return; 1299 } 1300 switchOutDrawHistory(); 1301 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1302 arg.mBaseUrl = baseUrl; 1303 arg.mData = data; 1304 arg.mMimeType = mimeType; 1305 arg.mEncoding = encoding; 1306 arg.mFailUrl = failUrl; 1307 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1308 clearTextEntry(); 1309 } 1310 1311 /** 1312 * Stop the current load. 1313 */ 1314 public void stopLoading() { 1315 // TODO: should we clear all the messages in the queue before sending 1316 // STOP_LOADING? 1317 switchOutDrawHistory(); 1318 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1319 } 1320 1321 /** 1322 * Reload the current url. 1323 */ 1324 public void reload() { 1325 switchOutDrawHistory(); 1326 mWebViewCore.sendMessage(EventHub.RELOAD); 1327 } 1328 1329 /** 1330 * Return true if this WebView has a back history item. 1331 * @return True iff this WebView has a back history item. 1332 */ 1333 public boolean canGoBack() { 1334 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1335 synchronized (l) { 1336 if (l.getClearPending()) { 1337 return false; 1338 } else { 1339 return l.getCurrentIndex() > 0; 1340 } 1341 } 1342 } 1343 1344 /** 1345 * Go back in the history of this WebView. 1346 */ 1347 public void goBack() { 1348 goBackOrForward(-1); 1349 } 1350 1351 /** 1352 * Return true if this WebView has a forward history item. 1353 * @return True iff this Webview has a forward history item. 1354 */ 1355 public boolean canGoForward() { 1356 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1357 synchronized (l) { 1358 if (l.getClearPending()) { 1359 return false; 1360 } else { 1361 return l.getCurrentIndex() < l.getSize() - 1; 1362 } 1363 } 1364 } 1365 1366 /** 1367 * Go forward in the history of this WebView. 1368 */ 1369 public void goForward() { 1370 goBackOrForward(1); 1371 } 1372 1373 /** 1374 * Return true if the page can go back or forward the given 1375 * number of steps. 1376 * @param steps The negative or positive number of steps to move the 1377 * history. 1378 */ 1379 public boolean canGoBackOrForward(int steps) { 1380 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1381 synchronized (l) { 1382 if (l.getClearPending()) { 1383 return false; 1384 } else { 1385 int newIndex = l.getCurrentIndex() + steps; 1386 return newIndex >= 0 && newIndex < l.getSize(); 1387 } 1388 } 1389 } 1390 1391 /** 1392 * Go to the history item that is the number of steps away from 1393 * the current item. Steps is negative if backward and positive 1394 * if forward. 1395 * @param steps The number of steps to take back or forward in the back 1396 * forward list. 1397 */ 1398 public void goBackOrForward(int steps) { 1399 goBackOrForward(steps, false); 1400 } 1401 1402 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1403 // every time we go back or forward, we want to reset the 1404 // WebView certificate: 1405 // if the new site is secure, we will reload it and get a 1406 // new certificate set; 1407 // if the new site is not secure, the certificate must be 1408 // null, and that will be the case 1409 mCertificate = null; 1410 if (steps != 0) { 1411 clearTextEntry(); 1412 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1413 ignoreSnapshot ? 1 : 0); 1414 } 1415 } 1416 1417 private boolean extendScroll(int y) { 1418 int finalY = mScroller.getFinalY(); 1419 int newY = pinLocY(finalY + y); 1420 if (newY == finalY) return false; 1421 mScroller.setFinalY(newY); 1422 mScroller.extendDuration(computeDuration(0, y)); 1423 return true; 1424 } 1425 1426 /** 1427 * Scroll the contents of the view up by half the view size 1428 * @param top true to jump to the top of the page 1429 * @return true if the page was scrolled 1430 */ 1431 public boolean pageUp(boolean top) { 1432 if (mNativeClass == 0) { 1433 return false; 1434 } 1435 nativeClearCursor(); // start next trackball movement from page edge 1436 if (top) { 1437 // go to the top of the document 1438 return pinScrollTo(mScrollX, 0, true, 0); 1439 } 1440 // Page up 1441 int h = getHeight(); 1442 int y; 1443 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1444 y = -h + PAGE_SCROLL_OVERLAP; 1445 } else { 1446 y = -h / 2; 1447 } 1448 mUserScroll = true; 1449 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1450 : extendScroll(y); 1451 } 1452 1453 /** 1454 * Scroll the contents of the view down by half the page size 1455 * @param bottom true to jump to bottom of page 1456 * @return true if the page was scrolled 1457 */ 1458 public boolean pageDown(boolean bottom) { 1459 if (mNativeClass == 0) { 1460 return false; 1461 } 1462 nativeClearCursor(); // start next trackball movement from page edge 1463 if (bottom) { 1464 return pinScrollTo(mScrollX, mContentHeight, true, 0); 1465 } 1466 // Page down. 1467 int h = getHeight(); 1468 int y; 1469 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1470 y = h - PAGE_SCROLL_OVERLAP; 1471 } else { 1472 y = h / 2; 1473 } 1474 mUserScroll = true; 1475 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1476 : extendScroll(y); 1477 } 1478 1479 /** 1480 * Clear the view so that onDraw() will draw nothing but white background, 1481 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1482 */ 1483 public void clearView() { 1484 mContentWidth = 0; 1485 mContentHeight = 0; 1486 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1487 } 1488 1489 /** 1490 * Return a new picture that captures the current display of the webview. 1491 * This is a copy of the display, and will be unaffected if the webview 1492 * later loads a different URL. 1493 * 1494 * @return a picture containing the current contents of the view. Note this 1495 * picture is of the entire document, and is not restricted to the 1496 * bounds of the view. 1497 */ 1498 public Picture capturePicture() { 1499 if (null == mWebViewCore) return null; // check for out of memory tab 1500 return mWebViewCore.copyContentPicture(); 1501 } 1502 1503 /** 1504 * Return true if the browser is displaying a TextView for text input. 1505 */ 1506 private boolean inEditingMode() { 1507 return mWebTextView != null && mWebTextView.getParent() != null 1508 && mWebTextView.hasFocus(); 1509 } 1510 1511 private void clearTextEntry() { 1512 if (inEditingMode()) { 1513 mWebTextView.remove(); 1514 } 1515 } 1516 1517 /** 1518 * Return the current scale of the WebView 1519 * @return The current scale. 1520 */ 1521 public float getScale() { 1522 return mActualScale; 1523 } 1524 1525 /** 1526 * Set the initial scale for the WebView. 0 means default. If 1527 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1528 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1529 * WebView starts will this value as initial scale. 1530 * 1531 * @param scaleInPercent The initial scale in percent. 1532 */ 1533 public void setInitialScale(int scaleInPercent) { 1534 mInitialScale = scaleInPercent; 1535 } 1536 1537 /** 1538 * Invoke the graphical zoom picker widget for this WebView. This will 1539 * result in the zoom widget appearing on the screen to control the zoom 1540 * level of this WebView. 1541 */ 1542 public void invokeZoomPicker() { 1543 if (!getSettings().supportZoom()) { 1544 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1545 return; 1546 } 1547 clearTextEntry(); 1548 if (getSettings().getBuiltInZoomControls()) { 1549 mZoomButtonsController.setVisible(true); 1550 } else { 1551 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1552 mPrivateHandler.postDelayed(mZoomControlRunnable, 1553 ZOOM_CONTROLS_TIMEOUT); 1554 } 1555 } 1556 1557 /** 1558 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1559 * is found and the anchor has a non-javascript url, the HitTestResult type 1560 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1561 * anchor does not have a url or if it is a javascript url, the type will 1562 * be UNKNOWN_TYPE and the url has to be retrieved through 1563 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1564 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1565 * the "extra" field. A type of 1566 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1567 * a child node. If a phone number is found, the HitTestResult type is set 1568 * to PHONE_TYPE and the phone number is set in the "extra" field of 1569 * HitTestResult. If a map address is found, the HitTestResult type is set 1570 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1571 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1572 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1573 * HitTestResult type is set to UNKNOWN_TYPE. 1574 */ 1575 public HitTestResult getHitTestResult() { 1576 if (mNativeClass == 0) { 1577 return null; 1578 } 1579 1580 HitTestResult result = new HitTestResult(); 1581 if (nativeHasCursorNode()) { 1582 if (nativeCursorIsTextInput()) { 1583 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1584 } else { 1585 String text = nativeCursorText(); 1586 if (text != null) { 1587 if (text.startsWith(SCHEME_TEL)) { 1588 result.setType(HitTestResult.PHONE_TYPE); 1589 result.setExtra(text.substring(SCHEME_TEL.length())); 1590 } else if (text.startsWith(SCHEME_MAILTO)) { 1591 result.setType(HitTestResult.EMAIL_TYPE); 1592 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1593 } else if (text.startsWith(SCHEME_GEO)) { 1594 result.setType(HitTestResult.GEO_TYPE); 1595 result.setExtra(URLDecoder.decode(text 1596 .substring(SCHEME_GEO.length()))); 1597 } else if (nativeCursorIsAnchor()) { 1598 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1599 result.setExtra(text); 1600 } 1601 } 1602 } 1603 } 1604 int type = result.getType(); 1605 if (type == HitTestResult.UNKNOWN_TYPE 1606 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1607 // Now check to see if it is an image. 1608 int contentX = viewToContent((int) mLastTouchX + mScrollX); 1609 int contentY = viewToContent((int) mLastTouchY + mScrollY); 1610 String text = nativeImageURI(contentX, contentY); 1611 if (text != null) { 1612 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1613 HitTestResult.IMAGE_TYPE : 1614 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1615 result.setExtra(text); 1616 } 1617 } 1618 return result; 1619 } 1620 1621 /** 1622 * Request the href of an anchor element due to getFocusNodePath returning 1623 * "href." If hrefMsg is null, this method returns immediately and does not 1624 * dispatch hrefMsg to its target. 1625 * 1626 * @param hrefMsg This message will be dispatched with the result of the 1627 * request as the data member with "url" as key. The result can 1628 * be null. 1629 */ 1630 // FIXME: API change required to change the name of this function. We now 1631 // look at the cursor node, and not the focus node. Also, what is 1632 // getFocusNodePath? 1633 public void requestFocusNodeHref(Message hrefMsg) { 1634 if (hrefMsg == null || mNativeClass == 0) { 1635 return; 1636 } 1637 if (nativeCursorIsAnchor()) { 1638 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1639 nativeCursorFramePointer(), nativeCursorNodePointer(), 1640 hrefMsg); 1641 } 1642 } 1643 1644 /** 1645 * Request the url of the image last touched by the user. msg will be sent 1646 * to its target with a String representing the url as its object. 1647 * 1648 * @param msg This message will be dispatched with the result of the request 1649 * as the data member with "url" as key. The result can be null. 1650 */ 1651 public void requestImageRef(Message msg) { 1652 int contentX = viewToContent((int) mLastTouchX + mScrollX); 1653 int contentY = viewToContent((int) mLastTouchY + mScrollY); 1654 String ref = nativeImageURI(contentX, contentY); 1655 Bundle data = msg.getData(); 1656 data.putString("url", ref); 1657 msg.setData(data); 1658 msg.sendToTarget(); 1659 } 1660 1661 private static int pinLoc(int x, int viewMax, int docMax) { 1662// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1663 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1664 // pin the short document to the top/left of the screen 1665 x = 0; 1666// Log.d(LOGTAG, "--- center " + x); 1667 } else if (x < 0) { 1668 x = 0; 1669// Log.d(LOGTAG, "--- zero"); 1670 } else if (x + viewMax > docMax) { 1671 x = docMax - viewMax; 1672// Log.d(LOGTAG, "--- pin " + x); 1673 } 1674 return x; 1675 } 1676 1677 // Expects x in view coordinates 1678 private int pinLocX(int x) { 1679 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1680 } 1681 1682 // Expects y in view coordinates 1683 private int pinLocY(int y) { 1684 return pinLoc(y, getViewHeight(), computeVerticalScrollRange()); 1685 } 1686 1687 /*package*/ int viewToContent(int x) { 1688 return Math.round(x * mInvActualScale); 1689 } 1690 1691 private int contentToView(int x) { 1692 return Math.round(x * mActualScale); 1693 } 1694 1695 // Called by JNI to invalidate the View, given rectangle coordinates in 1696 // content space 1697 private void viewInvalidate(int l, int t, int r, int b) { 1698 invalidate(contentToView(l), contentToView(t), contentToView(r), 1699 contentToView(b)); 1700 } 1701 1702 // Called by JNI to invalidate the View after a delay, given rectangle 1703 // coordinates in content space 1704 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1705 postInvalidateDelayed(delay, contentToView(l), contentToView(t), 1706 contentToView(r), contentToView(b)); 1707 } 1708 1709 private Rect contentToView(Rect x) { 1710 return new Rect(contentToView(x.left), contentToView(x.top) 1711 , contentToView(x.right), contentToView(x.bottom)); 1712 } 1713 1714 /* call from webcoreview.draw(), so we're still executing in the UI thread 1715 */ 1716 private void recordNewContentSize(int w, int h, boolean updateLayout) { 1717 1718 // premature data from webkit, ignore 1719 if ((w | h) == 0) { 1720 return; 1721 } 1722 1723 // don't abort a scroll animation if we didn't change anything 1724 if (mContentWidth != w || mContentHeight != h) { 1725 // record new dimensions 1726 mContentWidth = w; 1727 mContentHeight = h; 1728 // If history Picture is drawn, don't update scroll. They will be 1729 // updated when we get out of that mode. 1730 if (!mDrawHistory) { 1731 // repin our scroll, taking into account the new content size 1732 int oldX = mScrollX; 1733 int oldY = mScrollY; 1734 mScrollX = pinLocX(mScrollX); 1735 mScrollY = pinLocY(mScrollY); 1736 // android.util.Log.d("skia", "recordNewContentSize - 1737 // abortAnimation"); 1738 mScroller.abortAnimation(); // just in case 1739 if (oldX != mScrollX || oldY != mScrollY) { 1740 sendOurVisibleRect(); 1741 } 1742 } 1743 } 1744 contentSizeChanged(updateLayout); 1745 } 1746 1747 private void setNewZoomScale(float scale, boolean force) { 1748 if (scale < mMinZoomScale) { 1749 scale = mMinZoomScale; 1750 } else if (scale > mMaxZoomScale) { 1751 scale = mMaxZoomScale; 1752 } 1753 if (scale != mActualScale || force) { 1754 if (mDrawHistory) { 1755 // If history Picture is drawn, don't update scroll. They will 1756 // be updated when we get out of that mode. 1757 if (scale != mActualScale && !mPreviewZoomOnly) { 1758 mCallbackProxy.onScaleChanged(mActualScale, scale); 1759 } 1760 mActualScale = scale; 1761 mInvActualScale = 1 / scale; 1762 if (!mPreviewZoomOnly) { 1763 sendViewSizeZoom(); 1764 } 1765 } else { 1766 // update our scroll so we don't appear to jump 1767 // i.e. keep the center of the doc in the center of the view 1768 1769 int oldX = mScrollX; 1770 int oldY = mScrollY; 1771 float ratio = scale * mInvActualScale; // old inverse 1772 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 1773 float sy = ratio * oldY + (ratio - 1) * mZoomCenterY; 1774 1775 // now update our new scale and inverse 1776 if (scale != mActualScale && !mPreviewZoomOnly) { 1777 mCallbackProxy.onScaleChanged(mActualScale, scale); 1778 } 1779 mActualScale = scale; 1780 mInvActualScale = 1 / scale; 1781 1782 // as we don't have animation for scaling, don't do animation 1783 // for scrolling, as it causes weird intermediate state 1784 // pinScrollTo(Math.round(sx), Math.round(sy)); 1785 mScrollX = pinLocX(Math.round(sx)); 1786 mScrollY = pinLocY(Math.round(sy)); 1787 1788 if (!mPreviewZoomOnly) { 1789 sendViewSizeZoom(); 1790 sendOurVisibleRect(); 1791 } 1792 } 1793 } 1794 } 1795 1796 // Used to avoid sending many visible rect messages. 1797 private Rect mLastVisibleRectSent; 1798 private Rect mLastGlobalRect; 1799 1800 private Rect sendOurVisibleRect() { 1801 Rect rect = new Rect(); 1802 calcOurContentVisibleRect(rect); 1803 // Rect.equals() checks for null input. 1804 if (!rect.equals(mLastVisibleRectSent)) { 1805 Point pos = new Point(rect.left, rect.top); 1806 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 1807 nativeMoveGeneration(), 0, pos); 1808 mLastVisibleRectSent = rect; 1809 } 1810 Rect globalRect = new Rect(); 1811 if (getGlobalVisibleRect(globalRect) 1812 && !globalRect.equals(mLastGlobalRect)) { 1813 if (DebugFlags.WEB_VIEW) { 1814 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 1815 + globalRect.top + ",r=" + globalRect.right + ",b=" 1816 + globalRect.bottom); 1817 } 1818 // TODO: the global offset is only used by windowRect() 1819 // in ChromeClientAndroid ; other clients such as touch 1820 // and mouse events could return view + screen relative points. 1821 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 1822 mLastGlobalRect = globalRect; 1823 } 1824 return rect; 1825 } 1826 1827 // Sets r to be the visible rectangle of our webview in view coordinates 1828 private void calcOurVisibleRect(Rect r) { 1829 Point p = new Point(); 1830 getGlobalVisibleRect(r, p); 1831 r.offset(-p.x, -p.y); 1832 if (mFindIsUp) { 1833 r.bottom -= FIND_HEIGHT; 1834 } 1835 } 1836 1837 // Sets r to be our visible rectangle in content coordinates 1838 private void calcOurContentVisibleRect(Rect r) { 1839 calcOurVisibleRect(r); 1840 r.left = viewToContent(r.left); 1841 r.top = viewToContent(r.top); 1842 r.right = viewToContent(r.right); 1843 r.bottom = viewToContent(r.bottom); 1844 } 1845 1846 /** 1847 * Compute unzoomed width and height, and if they differ from the last 1848 * values we sent, send them to webkit (to be used has new viewport) 1849 * 1850 * @return true if new values were sent 1851 */ 1852 private boolean sendViewSizeZoom() { 1853 int newWidth = Math.round(getViewWidth() * mInvActualScale); 1854 int newHeight = Math.round(getViewHeight() * mInvActualScale); 1855 /* 1856 * Because the native side may have already done a layout before the 1857 * View system was able to measure us, we have to send a height of 0 to 1858 * remove excess whitespace when we grow our width. This will trigger a 1859 * layout and a change in content size. This content size change will 1860 * mean that contentSizeChanged will either call this method directly or 1861 * indirectly from onSizeChanged. 1862 */ 1863 if (newWidth > mLastWidthSent && mWrapContent) { 1864 newHeight = 0; 1865 } 1866 // Avoid sending another message if the dimensions have not changed. 1867 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 1868 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, 1869 newWidth, newHeight, new Float(mActualScale)); 1870 mLastWidthSent = newWidth; 1871 mLastHeightSent = newHeight; 1872 return true; 1873 } 1874 return false; 1875 } 1876 1877 @Override 1878 protected int computeHorizontalScrollRange() { 1879 if (mDrawHistory) { 1880 return mHistoryWidth; 1881 } else { 1882 return contentToView(mContentWidth); 1883 } 1884 } 1885 1886 // Make sure this stays in sync with the actual height of the FindDialog. 1887 private static final int FIND_HEIGHT = 79; 1888 1889 @Override 1890 protected int computeVerticalScrollRange() { 1891 if (mDrawHistory) { 1892 return mHistoryHeight; 1893 } else { 1894 int height = contentToView(mContentHeight); 1895 if (mFindIsUp) { 1896 height += FIND_HEIGHT; 1897 } 1898 return height; 1899 } 1900 } 1901 1902 /** 1903 * Get the url for the current page. This is not always the same as the url 1904 * passed to WebViewClient.onPageStarted because although the load for 1905 * that url has begun, the current page may not have changed. 1906 * @return The url for the current page. 1907 */ 1908 public String getUrl() { 1909 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1910 return h != null ? h.getUrl() : null; 1911 } 1912 1913 /** 1914 * Get the original url for the current page. This is not always the same 1915 * as the url passed to WebViewClient.onPageStarted because although the 1916 * load for that url has begun, the current page may not have changed. 1917 * Also, there may have been redirects resulting in a different url to that 1918 * originally requested. 1919 * @return The url that was originally requested for the current page. 1920 */ 1921 public String getOriginalUrl() { 1922 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1923 return h != null ? h.getOriginalUrl() : null; 1924 } 1925 1926 /** 1927 * Get the title for the current page. This is the title of the current page 1928 * until WebViewClient.onReceivedTitle is called. 1929 * @return The title for the current page. 1930 */ 1931 public String getTitle() { 1932 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1933 return h != null ? h.getTitle() : null; 1934 } 1935 1936 /** 1937 * Get the favicon for the current page. This is the favicon of the current 1938 * page until WebViewClient.onReceivedIcon is called. 1939 * @return The favicon for the current page. 1940 */ 1941 public Bitmap getFavicon() { 1942 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1943 return h != null ? h.getFavicon() : null; 1944 } 1945 1946 /** 1947 * Get the progress for the current page. 1948 * @return The progress for the current page between 0 and 100. 1949 */ 1950 public int getProgress() { 1951 return mCallbackProxy.getProgress(); 1952 } 1953 1954 /** 1955 * @return the height of the HTML content. 1956 */ 1957 public int getContentHeight() { 1958 return mContentHeight; 1959 } 1960 1961 /** 1962 * Pause all layout, parsing, and javascript timers for all webviews. This 1963 * is a global requests, not restricted to just this webview. This can be 1964 * useful if the application has been paused. 1965 */ 1966 public void pauseTimers() { 1967 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 1968 } 1969 1970 /** 1971 * Resume all layout, parsing, and javascript timers for all webviews. 1972 * This will resume dispatching all timers. 1973 */ 1974 public void resumeTimers() { 1975 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 1976 } 1977 1978 /** 1979 * Call this to pause any extra processing associated with this view and 1980 * its associated DOM/plugins/javascript/etc. For example, if the view is 1981 * taken offscreen, this could be called to reduce unnecessary CPU and/or 1982 * network traffic. When the view is again "active", call onResume(). 1983 * 1984 * Note that this differs from pauseTimers(), which affects all views/DOMs 1985 * @hide 1986 */ 1987 public void onPause() { 1988 if (!mIsPaused) { 1989 mIsPaused = true; 1990 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 1991 } 1992 } 1993 1994 /** 1995 * Call this to balanace a previous call to onPause() 1996 * @hide 1997 */ 1998 public void onResume() { 1999 if (mIsPaused) { 2000 mIsPaused = false; 2001 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2002 } 2003 } 2004 2005 /** 2006 * Returns true if the view is paused, meaning onPause() was called. Calling 2007 * onResume() sets the paused state back to false. 2008 * @hide 2009 */ 2010 public boolean isPaused() { 2011 return mIsPaused; 2012 } 2013 2014 /** 2015 * Call this to inform the view that memory is low so that it can 2016 * free any available memory. 2017 * @hide 2018 */ 2019 public void freeMemory() { 2020 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2021 } 2022 2023 /** 2024 * Clear the resource cache. Note that the cache is per-application, so 2025 * this will clear the cache for all WebViews used. 2026 * 2027 * @param includeDiskFiles If false, only the RAM cache is cleared. 2028 */ 2029 public void clearCache(boolean includeDiskFiles) { 2030 // Note: this really needs to be a static method as it clears cache for all 2031 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2032 // we can't make this static. 2033 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2034 includeDiskFiles ? 1 : 0, 0); 2035 } 2036 2037 /** 2038 * Make sure that clearing the form data removes the adapter from the 2039 * currently focused textfield if there is one. 2040 */ 2041 public void clearFormData() { 2042 if (inEditingMode()) { 2043 AutoCompleteAdapter adapter = null; 2044 mWebTextView.setAdapterCustom(adapter); 2045 } 2046 } 2047 2048 /** 2049 * Tell the WebView to clear its internal back/forward list. 2050 */ 2051 public void clearHistory() { 2052 mCallbackProxy.getBackForwardList().setClearPending(); 2053 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2054 } 2055 2056 /** 2057 * Clear the SSL preferences table stored in response to proceeding with SSL 2058 * certificate errors. 2059 */ 2060 public void clearSslPreferences() { 2061 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2062 } 2063 2064 /** 2065 * Return the WebBackForwardList for this WebView. This contains the 2066 * back/forward list for use in querying each item in the history stack. 2067 * This is a copy of the private WebBackForwardList so it contains only a 2068 * snapshot of the current state. Multiple calls to this method may return 2069 * different objects. The object returned from this method will not be 2070 * updated to reflect any new state. 2071 */ 2072 public WebBackForwardList copyBackForwardList() { 2073 return mCallbackProxy.getBackForwardList().clone(); 2074 } 2075 2076 /* 2077 * Highlight and scroll to the next occurance of String in findAll. 2078 * Wraps the page infinitely, and scrolls. Must be called after 2079 * calling findAll. 2080 * 2081 * @param forward Direction to search. 2082 */ 2083 public void findNext(boolean forward) { 2084 nativeFindNext(forward); 2085 } 2086 2087 /* 2088 * Find all instances of find on the page and highlight them. 2089 * @param find String to find. 2090 * @return int The number of occurances of the String "find" 2091 * that were found. 2092 */ 2093 public int findAll(String find) { 2094 mFindIsUp = true; 2095 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2096 invalidate(); 2097 return result; 2098 } 2099 2100 // Used to know whether the find dialog is open. Affects whether 2101 // or not we draw the highlights for matches. 2102 private boolean mFindIsUp; 2103 2104 /** 2105 * Return the first substring consisting of the address of a physical 2106 * location. Currently, only addresses in the United States are detected, 2107 * and consist of: 2108 * - a house number 2109 * - a street name 2110 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2111 * - a city name 2112 * - a state or territory, either spelled out or two-letter abbr. 2113 * - an optional 5 digit or 9 digit zip code. 2114 * 2115 * All names must be correctly capitalized, and the zip code, if present, 2116 * must be valid for the state. The street type must be a standard USPS 2117 * spelling or abbreviation. The state or territory must also be spelled 2118 * or abbreviated using USPS standards. The house number may not exceed 2119 * five digits. 2120 * @param addr The string to search for addresses. 2121 * 2122 * @return the address, or if no address is found, return null. 2123 */ 2124 public static String findAddress(String addr) { 2125 return findAddress(addr, false); 2126 } 2127 2128 /** 2129 * @hide 2130 * Return the first substring consisting of the address of a physical 2131 * location. Currently, only addresses in the United States are detected, 2132 * and consist of: 2133 * - a house number 2134 * - a street name 2135 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2136 * - a city name 2137 * - a state or territory, either spelled out or two-letter abbr. 2138 * - an optional 5 digit or 9 digit zip code. 2139 * 2140 * Names are optionally capitalized, and the zip code, if present, 2141 * must be valid for the state. The street type must be a standard USPS 2142 * spelling or abbreviation. The state or territory must also be spelled 2143 * or abbreviated using USPS standards. The house number may not exceed 2144 * five digits. 2145 * @param addr The string to search for addresses. 2146 * @param caseInsensitive addr Set to true to make search ignore case. 2147 * 2148 * @return the address, or if no address is found, return null. 2149 */ 2150 public static String findAddress(String addr, boolean caseInsensitive) { 2151 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2152 } 2153 2154 /* 2155 * Clear the highlighting surrounding text matches created by findAll. 2156 */ 2157 public void clearMatches() { 2158 mFindIsUp = false; 2159 nativeSetFindIsDown(); 2160 // Now that the dialog has been removed, ensure that we scroll to a 2161 // location that is not beyond the end of the page. 2162 pinScrollTo(mScrollX, mScrollY, false, 0); 2163 invalidate(); 2164 } 2165 2166 /** 2167 * Query the document to see if it contains any image references. The 2168 * message object will be dispatched with arg1 being set to 1 if images 2169 * were found and 0 if the document does not reference any images. 2170 * @param response The message that will be dispatched with the result. 2171 */ 2172 public void documentHasImages(Message response) { 2173 if (response == null) { 2174 return; 2175 } 2176 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2177 } 2178 2179 @Override 2180 public void computeScroll() { 2181 if (mScroller.computeScrollOffset()) { 2182 int oldX = mScrollX; 2183 int oldY = mScrollY; 2184 mScrollX = mScroller.getCurrX(); 2185 mScrollY = mScroller.getCurrY(); 2186 postInvalidate(); // So we draw again 2187 if (oldX != mScrollX || oldY != mScrollY) { 2188 // as onScrollChanged() is not called, sendOurVisibleRect() 2189 // needs to be call explicitly 2190 sendOurVisibleRect(); 2191 } 2192 } else { 2193 super.computeScroll(); 2194 } 2195 } 2196 2197 private static int computeDuration(int dx, int dy) { 2198 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2199 int duration = distance * 1000 / STD_SPEED; 2200 return Math.min(duration, MAX_DURATION); 2201 } 2202 2203 // helper to pin the scrollBy parameters (already in view coordinates) 2204 // returns true if the scroll was changed 2205 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2206 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2207 } 2208 2209 // helper to pin the scrollTo parameters (already in view coordinates) 2210 // returns true if the scroll was changed 2211 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2212 x = pinLocX(x); 2213 y = pinLocY(y); 2214 int dx = x - mScrollX; 2215 int dy = y - mScrollY; 2216 2217 if ((dx | dy) == 0) { 2218 return false; 2219 } 2220 2221 if (true && animate) { 2222 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2223 2224 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2225 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2226 invalidate(); 2227 } else { 2228 mScroller.abortAnimation(); // just in case 2229 scrollTo(x, y); 2230 } 2231 return true; 2232 } 2233 2234 // Scale from content to view coordinates, and pin. 2235 // Also called by jni webview.cpp 2236 private void setContentScrollBy(int cx, int cy, boolean animate) { 2237 if (mDrawHistory) { 2238 // disallow WebView to change the scroll position as History Picture 2239 // is used in the view system. 2240 // TODO: as we switchOutDrawHistory when trackball or navigation 2241 // keys are hit, this should be safe. Right? 2242 return; 2243 } 2244 cx = contentToView(cx); 2245 cy = contentToView(cy); 2246 if (mHeightCanMeasure) { 2247 // move our visible rect according to scroll request 2248 if (cy != 0) { 2249 Rect tempRect = new Rect(); 2250 calcOurVisibleRect(tempRect); 2251 tempRect.offset(cx, cy); 2252 requestRectangleOnScreen(tempRect); 2253 } 2254 // FIXME: We scroll horizontally no matter what because currently 2255 // ScrollView and ListView will not scroll horizontally. 2256 // FIXME: Why do we only scroll horizontally if there is no 2257 // vertical scroll? 2258// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2259 if (cy == 0 && cx != 0) { 2260 pinScrollBy(cx, 0, animate, 0); 2261 } 2262 } else { 2263 pinScrollBy(cx, cy, animate, 0); 2264 } 2265 } 2266 2267 // scale from content to view coordinates, and pin 2268 // return true if pin caused the final x/y different than the request cx/cy; 2269 // return false if the view scroll to the exact position as it is requested. 2270 private boolean setContentScrollTo(int cx, int cy) { 2271 if (mDrawHistory) { 2272 // disallow WebView to change the scroll position as History Picture 2273 // is used in the view system. 2274 // One known case where this is called is that WebCore tries to 2275 // restore the scroll position. As history Picture already uses the 2276 // saved scroll position, it is ok to skip this. 2277 return false; 2278 } 2279 int vx = contentToView(cx); 2280 int vy = contentToView(cy); 2281// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2282// vx + " " + vy + "]"); 2283 pinScrollTo(vx, vy, false, 0); 2284 if (mScrollX != vx || mScrollY != vy) { 2285 return true; 2286 } else { 2287 return false; 2288 } 2289 } 2290 2291 // scale from content to view coordinates, and pin 2292 private void spawnContentScrollTo(int cx, int cy) { 2293 if (mDrawHistory) { 2294 // disallow WebView to change the scroll position as History Picture 2295 // is used in the view system. 2296 return; 2297 } 2298 int vx = contentToView(cx); 2299 int vy = contentToView(cy); 2300 pinScrollTo(vx, vy, true, 0); 2301 } 2302 2303 /** 2304 * These are from webkit, and are in content coordinate system (unzoomed) 2305 */ 2306 private void contentSizeChanged(boolean updateLayout) { 2307 // suppress 0,0 since we usually see real dimensions soon after 2308 // this avoids drawing the prev content in a funny place. If we find a 2309 // way to consolidate these notifications, this check may become 2310 // obsolete 2311 if ((mContentWidth | mContentHeight) == 0) { 2312 return; 2313 } 2314 2315 if (mHeightCanMeasure) { 2316 if (getMeasuredHeight() != contentToView(mContentHeight) 2317 && updateLayout) { 2318 requestLayout(); 2319 } 2320 } else if (mWidthCanMeasure) { 2321 if (getMeasuredWidth() != contentToView(mContentWidth) 2322 && updateLayout) { 2323 requestLayout(); 2324 } 2325 } else { 2326 // If we don't request a layout, try to send our view size to the 2327 // native side to ensure that WebCore has the correct dimensions. 2328 sendViewSizeZoom(); 2329 } 2330 } 2331 2332 /** 2333 * Set the WebViewClient that will receive various notifications and 2334 * requests. This will replace the current handler. 2335 * @param client An implementation of WebViewClient. 2336 */ 2337 public void setWebViewClient(WebViewClient client) { 2338 mCallbackProxy.setWebViewClient(client); 2339 } 2340 2341 /** 2342 * Register the interface to be used when content can not be handled by 2343 * the rendering engine, and should be downloaded instead. This will replace 2344 * the current handler. 2345 * @param listener An implementation of DownloadListener. 2346 */ 2347 public void setDownloadListener(DownloadListener listener) { 2348 mCallbackProxy.setDownloadListener(listener); 2349 } 2350 2351 /** 2352 * Set the chrome handler. This is an implementation of WebChromeClient for 2353 * use in handling Javascript dialogs, favicons, titles, and the progress. 2354 * This will replace the current handler. 2355 * @param client An implementation of WebChromeClient. 2356 */ 2357 public void setWebChromeClient(WebChromeClient client) { 2358 mCallbackProxy.setWebChromeClient(client); 2359 } 2360 2361 /** 2362 * Gets the chrome handler. 2363 * @return the current WebChromeClient instance. 2364 * 2365 * @hide API council approval. 2366 */ 2367 public WebChromeClient getWebChromeClient() { 2368 return mCallbackProxy.getWebChromeClient(); 2369 } 2370 2371 /** 2372 * Set the Picture listener. This is an interface used to receive 2373 * notifications of a new Picture. 2374 * @param listener An implementation of WebView.PictureListener. 2375 */ 2376 public void setPictureListener(PictureListener listener) { 2377 mPictureListener = listener; 2378 } 2379 2380 /** 2381 * {@hide} 2382 */ 2383 /* FIXME: Debug only! Remove for SDK! */ 2384 public void externalRepresentation(Message callback) { 2385 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2386 } 2387 2388 /** 2389 * {@hide} 2390 */ 2391 /* FIXME: Debug only! Remove for SDK! */ 2392 public void documentAsText(Message callback) { 2393 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2394 } 2395 2396 /** 2397 * Use this function to bind an object to Javascript so that the 2398 * methods can be accessed from Javascript. 2399 * <p><strong>IMPORTANT:</strong> 2400 * <ul> 2401 * <li> Using addJavascriptInterface() allows JavaScript to control your 2402 * application. This can be a very useful feature or a dangerous security 2403 * issue. When the HTML in the WebView is untrustworthy (for example, part 2404 * or all of the HTML is provided by some person or process), then an 2405 * attacker could inject HTML that will execute your code and possibly any 2406 * code of the attacker's choosing.<br> 2407 * Do not use addJavascriptInterface() unless all of the HTML in this 2408 * WebView was written by you.</li> 2409 * <li> The Java object that is bound runs in another thread and not in 2410 * the thread that it was constructed in.</li> 2411 * </ul></p> 2412 * @param obj The class instance to bind to Javascript 2413 * @param interfaceName The name to used to expose the class in Javascript 2414 */ 2415 public void addJavascriptInterface(Object obj, String interfaceName) { 2416 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2417 arg.mObject = obj; 2418 arg.mInterfaceName = interfaceName; 2419 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2420 } 2421 2422 /** 2423 * Return the WebSettings object used to control the settings for this 2424 * WebView. 2425 * @return A WebSettings object that can be used to control this WebView's 2426 * settings. 2427 */ 2428 public WebSettings getSettings() { 2429 return mWebViewCore.getSettings(); 2430 } 2431 2432 /** 2433 * Return the list of currently loaded plugins. 2434 * @return The list of currently loaded plugins. 2435 */ 2436 public static synchronized PluginList getPluginList() { 2437 if (sPluginList == null) { 2438 sPluginList = new PluginList(); 2439 } 2440 return sPluginList; 2441 } 2442 2443 /** 2444 * TODO: need to add @Deprecated 2445 */ 2446 public void refreshPlugins(boolean reloadOpenPages) { 2447 PluginManager.getInstance(mContext).refreshPlugins(reloadOpenPages); 2448 } 2449 2450 //------------------------------------------------------------------------- 2451 // Override View methods 2452 //------------------------------------------------------------------------- 2453 2454 @Override 2455 protected void finalize() throws Throwable { 2456 destroy(); 2457 } 2458 2459 @Override 2460 protected void onDraw(Canvas canvas) { 2461 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2462 if (mNativeClass == 0) { 2463 return; 2464 } 2465 if (mWebViewCore.mEndScaleZoom) { 2466 mWebViewCore.mEndScaleZoom = false; 2467 if (mTouchMode >= FIRST_SCROLL_ZOOM 2468 && mTouchMode <= LAST_SCROLL_ZOOM) { 2469 setHorizontalScrollBarEnabled(true); 2470 setVerticalScrollBarEnabled(true); 2471 mTouchMode = TOUCH_DONE_MODE; 2472 } 2473 } 2474 int sc = canvas.save(); 2475 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 2476 scrollZoomDraw(canvas); 2477 } else { 2478 // Update the buttons in the picture, so when we draw the picture 2479 // to the screen, they are in the correct state. 2480 // Tell the native side if user is a) touching the screen, 2481 // b) pressing the trackball down, or c) pressing the enter key 2482 // If the cursor is on a button, we need to draw it in the pressed 2483 // state. 2484 // If mNativeClass is 0, we should not reach here, so we do not 2485 // need to check it again. 2486 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2487 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2488 || mTrackballDown || mGotCenterDown, false); 2489 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2490 } 2491 canvas.restoreToCount(sc); 2492 2493 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2494 invalidate(); 2495 } 2496 } 2497 2498 @Override 2499 public void setLayoutParams(ViewGroup.LayoutParams params) { 2500 if (params.height == LayoutParams.WRAP_CONTENT) { 2501 mWrapContent = true; 2502 } 2503 super.setLayoutParams(params); 2504 } 2505 2506 @Override 2507 public boolean performLongClick() { 2508 if (inEditingMode()) { 2509 return mWebTextView.performLongClick(); 2510 } else { 2511 return super.performLongClick(); 2512 } 2513 } 2514 2515 private void drawCoreAndCursorRing(Canvas canvas, int color, 2516 boolean drawCursorRing) { 2517 if (mDrawHistory) { 2518 canvas.scale(mActualScale, mActualScale); 2519 canvas.drawPicture(mHistoryPicture); 2520 return; 2521 } 2522 2523 boolean animateZoom = mZoomScale != 0; 2524 boolean animateScroll = !mScroller.isFinished() 2525 || mVelocityTracker != null; 2526 if (animateZoom) { 2527 float zoomScale; 2528 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 2529 if (interval < ZOOM_ANIMATION_LENGTH) { 2530 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 2531 zoomScale = 1.0f / (mInvInitialZoomScale 2532 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 2533 invalidate(); 2534 } else { 2535 zoomScale = mZoomScale; 2536 // set mZoomScale to be 0 as we have done animation 2537 mZoomScale = 0; 2538 } 2539 float scale = (mActualScale - zoomScale) * mInvActualScale; 2540 float tx = scale * (mZoomCenterX + mScrollX); 2541 float ty = scale * (mZoomCenterY + mScrollY); 2542 2543 // this block pins the translate to "legal" bounds. This makes the 2544 // animation a bit non-obvious, but it means we won't pop when the 2545 // "real" zoom takes effect 2546 if (true) { 2547 // canvas.translate(mScrollX, mScrollY); 2548 tx -= mScrollX; 2549 ty -= mScrollY; 2550 tx = -pinLoc(-Math.round(tx), getViewWidth(), Math 2551 .round(mContentWidth * zoomScale)); 2552 ty = -pinLoc(-Math.round(ty), getViewHeight(), Math 2553 .round(mContentHeight * zoomScale)); 2554 tx += mScrollX; 2555 ty += mScrollY; 2556 } 2557 canvas.translate(tx, ty); 2558 canvas.scale(zoomScale, zoomScale); 2559 } else { 2560 canvas.scale(mActualScale, mActualScale); 2561 } 2562 2563 mWebViewCore.drawContentPicture(canvas, color, animateZoom, 2564 animateScroll); 2565 2566 if (mNativeClass == 0) return; 2567 if (mShiftIsPressed) { 2568 if (mTouchSelection) { 2569 nativeDrawSelectionRegion(canvas); 2570 } else { 2571 nativeDrawSelection(canvas, mSelectX, mSelectY, 2572 mExtendSelection); 2573 } 2574 } else if (drawCursorRing) { 2575 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 2576 mTouchMode = TOUCH_SHORTPRESS_MODE; 2577 HitTestResult hitTest = getHitTestResult(); 2578 if (hitTest != null && 2579 hitTest.mType != HitTestResult.UNKNOWN_TYPE) { 2580 mPrivateHandler.sendMessageDelayed(mPrivateHandler 2581 .obtainMessage(SWITCH_TO_LONGPRESS), 2582 LONG_PRESS_TIMEOUT); 2583 } 2584 } 2585 nativeDrawCursorRing(canvas); 2586 } 2587 // When the FindDialog is up, only draw the matches if we are not in 2588 // the process of scrolling them into view. 2589 if (mFindIsUp && !animateScroll) { 2590 nativeDrawMatches(canvas); 2591 } 2592 } 2593 2594 private float scrollZoomGridScale(float invScale) { 2595 float griddedInvScale = (int) (invScale * SCROLL_ZOOM_GRID) 2596 / (float) SCROLL_ZOOM_GRID; 2597 return 1.0f / griddedInvScale; 2598 } 2599 2600 private float scrollZoomX(float scale) { 2601 int width = getViewWidth(); 2602 float maxScrollZoomX = mContentWidth * scale - width; 2603 int maxX = mContentWidth - width; 2604 return -(maxScrollZoomX > 0 ? mZoomScrollX * maxScrollZoomX / maxX 2605 : maxScrollZoomX / 2); 2606 } 2607 2608 private float scrollZoomY(float scale) { 2609 int height = getViewHeight(); 2610 float maxScrollZoomY = mContentHeight * scale - height; 2611 int maxY = mContentHeight - height; 2612 return -(maxScrollZoomY > 0 ? mZoomScrollY * maxScrollZoomY / maxY 2613 : maxScrollZoomY / 2); 2614 } 2615 2616 private void drawMagnifyFrame(Canvas canvas, Rect frame, Paint paint) { 2617 final float ADORNMENT_LEN = 16.0f; 2618 float width = frame.width(); 2619 float height = frame.height(); 2620 Path path = new Path(); 2621 path.moveTo(-ADORNMENT_LEN, -ADORNMENT_LEN); 2622 path.lineTo(0, 0); 2623 path.lineTo(width, 0); 2624 path.lineTo(width + ADORNMENT_LEN, -ADORNMENT_LEN); 2625 path.moveTo(-ADORNMENT_LEN, height + ADORNMENT_LEN); 2626 path.lineTo(0, height); 2627 path.lineTo(width, height); 2628 path.lineTo(width + ADORNMENT_LEN, height + ADORNMENT_LEN); 2629 path.moveTo(0, 0); 2630 path.lineTo(0, height); 2631 path.moveTo(width, 0); 2632 path.lineTo(width, height); 2633 path.offset(frame.left, frame.top); 2634 canvas.drawPath(path, paint); 2635 } 2636 2637 // Returns frame surrounding magified portion of screen while 2638 // scroll-zoom is enabled. The frame is also used to center the 2639 // zoom-in zoom-out points at the start and end of the animation. 2640 private Rect scrollZoomFrame(int width, int height, float halfScale) { 2641 Rect scrollFrame = new Rect(); 2642 scrollFrame.set(mZoomScrollX, mZoomScrollY, 2643 mZoomScrollX + width, mZoomScrollY + height); 2644 if (mContentWidth * mZoomScrollLimit < width) { 2645 float scale = zoomFrameScaleX(width, halfScale, 1.0f); 2646 float offsetX = (width * scale - width) * 0.5f; 2647 scrollFrame.left -= offsetX; 2648 scrollFrame.right += offsetX; 2649 } 2650 if (mContentHeight * mZoomScrollLimit < height) { 2651 float scale = zoomFrameScaleY(height, halfScale, 1.0f); 2652 float offsetY = (height * scale - height) * 0.5f; 2653 scrollFrame.top -= offsetY; 2654 scrollFrame.bottom += offsetY; 2655 } 2656 return scrollFrame; 2657 } 2658 2659 private float zoomFrameScaleX(int width, float halfScale, float noScale) { 2660 // mContentWidth > width > mContentWidth * mZoomScrollLimit 2661 if (mContentWidth <= width) { 2662 return halfScale; 2663 } 2664 float part = (width - mContentWidth * mZoomScrollLimit) 2665 / (width * (1 - mZoomScrollLimit)); 2666 return halfScale * part + noScale * (1.0f - part); 2667 } 2668 2669 private float zoomFrameScaleY(int height, float halfScale, float noScale) { 2670 if (mContentHeight <= height) { 2671 return halfScale; 2672 } 2673 float part = (height - mContentHeight * mZoomScrollLimit) 2674 / (height * (1 - mZoomScrollLimit)); 2675 return halfScale * part + noScale * (1.0f - part); 2676 } 2677 2678 private float scrollZoomMagScale(float invScale) { 2679 return (invScale * 2 + mInvActualScale) / 3; 2680 } 2681 2682 private void scrollZoomDraw(Canvas canvas) { 2683 float invScale = mZoomScrollInvLimit; 2684 int elapsed = 0; 2685 if (mTouchMode != SCROLL_ZOOM_OUT) { 2686 elapsed = (int) Math.min(System.currentTimeMillis() 2687 - mZoomScrollStart, SCROLL_ZOOM_DURATION); 2688 float transitionScale = (mZoomScrollInvLimit - mInvActualScale) 2689 * elapsed / SCROLL_ZOOM_DURATION; 2690 if (mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 2691 invScale = mInvActualScale + transitionScale; 2692 } else { /* if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) */ 2693 invScale = mZoomScrollInvLimit - transitionScale; 2694 } 2695 } 2696 float scale = scrollZoomGridScale(invScale); 2697 invScale = 1.0f / scale; 2698 int width = getViewWidth(); 2699 int height = getViewHeight(); 2700 float halfScale = scrollZoomMagScale(invScale); 2701 Rect scrollFrame = scrollZoomFrame(width, height, halfScale); 2702 if (elapsed == SCROLL_ZOOM_DURATION) { 2703 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 2704 setHorizontalScrollBarEnabled(true); 2705 setVerticalScrollBarEnabled(true); 2706 rebuildWebTextView(); 2707 scrollTo((int) (scrollFrame.centerX() * mActualScale) 2708 - (width >> 1), (int) (scrollFrame.centerY() 2709 * mActualScale) - (height >> 1)); 2710 mTouchMode = TOUCH_DONE_MODE; 2711 } else { 2712 mTouchMode = SCROLL_ZOOM_OUT; 2713 } 2714 } 2715 float newX = scrollZoomX(scale); 2716 float newY = scrollZoomY(scale); 2717 if (DebugFlags.WEB_VIEW) { 2718 Log.v(LOGTAG, "scrollZoomDraw scale=" + scale + " + (" + newX 2719 + ", " + newY + ") mZoomScroll=(" + mZoomScrollX + ", " 2720 + mZoomScrollY + ")" + " invScale=" + invScale + " scale=" 2721 + scale); 2722 } 2723 canvas.translate(newX, newY); 2724 canvas.scale(scale, scale); 2725 boolean animating = mTouchMode != SCROLL_ZOOM_OUT; 2726 if (mDrawHistory) { 2727 int sc = canvas.save(Canvas.CLIP_SAVE_FLAG); 2728 Rect clip = new Rect(0, 0, mHistoryPicture.getWidth(), 2729 mHistoryPicture.getHeight()); 2730 canvas.clipRect(clip, Region.Op.DIFFERENCE); 2731 canvas.drawColor(mBackgroundColor); 2732 canvas.restoreToCount(sc); 2733 canvas.drawPicture(mHistoryPicture); 2734 } else { 2735 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2736 animating, true); 2737 } 2738 if (mTouchMode == TOUCH_DONE_MODE) { 2739 return; 2740 } 2741 Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); 2742 paint.setStyle(Paint.Style.STROKE); 2743 paint.setStrokeWidth(30.0f); 2744 paint.setARGB(0x50, 0, 0, 0); 2745 int maxX = mContentWidth - width; 2746 int maxY = mContentHeight - height; 2747 if (true) { // experiment: draw hint to place finger off magnify area 2748 drawMagnifyFrame(canvas, scrollFrame, paint); 2749 } else { 2750 canvas.drawRect(scrollFrame, paint); 2751 } 2752 int sc = canvas.save(); 2753 canvas.clipRect(scrollFrame); 2754 float halfX = (float) mZoomScrollX / maxX; 2755 if (mContentWidth * mZoomScrollLimit < width) { 2756 halfX = zoomFrameScaleX(width, 0.5f, halfX); 2757 } 2758 float halfY = (float) mZoomScrollY / maxY; 2759 if (mContentHeight * mZoomScrollLimit < height) { 2760 halfY = zoomFrameScaleY(height, 0.5f, halfY); 2761 } 2762 canvas.scale(halfScale, halfScale, mZoomScrollX + width * halfX 2763 , mZoomScrollY + height * halfY); 2764 if (DebugFlags.WEB_VIEW) { 2765 Log.v(LOGTAG, "scrollZoomDraw halfScale=" + halfScale + " w/h=(" 2766 + width + ", " + height + ") half=(" + halfX + ", " 2767 + halfY + ")"); 2768 } 2769 if (mDrawHistory) { 2770 canvas.drawPicture(mHistoryPicture); 2771 } else { 2772 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2773 animating, false); 2774 } 2775 canvas.restoreToCount(sc); 2776 if (mTouchMode != SCROLL_ZOOM_OUT) { 2777 invalidate(); 2778 } 2779 } 2780 2781 private void zoomScrollTap(float x, float y) { 2782 float scale = scrollZoomGridScale(mZoomScrollInvLimit); 2783 float left = scrollZoomX(scale); 2784 float top = scrollZoomY(scale); 2785 int width = getViewWidth(); 2786 int height = getViewHeight(); 2787 x -= width * scale / 2; 2788 y -= height * scale / 2; 2789 mZoomScrollX = Math.min(mContentWidth - width 2790 , Math.max(0, (int) ((x - left) / scale))); 2791 mZoomScrollY = Math.min(mContentHeight - height 2792 , Math.max(0, (int) ((y - top) / scale))); 2793 if (DebugFlags.WEB_VIEW) { 2794 Log.v(LOGTAG, "zoomScrollTap scale=" + scale + " + (" + left 2795 + ", " + top + ") mZoomScroll=(" + mZoomScrollX + ", " 2796 + mZoomScrollY + ")" + " x=" + x + " y=" + y); 2797 } 2798 } 2799 2800 /** 2801 * @hide 2802 */ 2803 public boolean canZoomScrollOut() { 2804 if (mContentWidth == 0 || mContentHeight == 0) { 2805 return false; 2806 } 2807 int width = getViewWidth(); 2808 int height = getViewHeight(); 2809 float x = (float) width / (float) mContentWidth; 2810 float y = (float) height / (float) mContentHeight; 2811 mZoomScrollLimit = Math.max(DEFAULT_MIN_ZOOM_SCALE, Math.min(x, y)); 2812 mZoomScrollInvLimit = 1.0f / mZoomScrollLimit; 2813 if (DebugFlags.WEB_VIEW) { 2814 Log.v(LOGTAG, "canZoomScrollOut" 2815 + " mInvActualScale=" + mInvActualScale 2816 + " mZoomScrollLimit=" + mZoomScrollLimit 2817 + " mZoomScrollInvLimit=" + mZoomScrollInvLimit 2818 + " mContentWidth=" + mContentWidth 2819 + " mContentHeight=" + mContentHeight 2820 ); 2821 } 2822 // don't zoom out unless magnify area is at least half as wide 2823 // or tall as content 2824 float limit = mZoomScrollLimit * 2; 2825 return mContentWidth >= width * limit 2826 || mContentHeight >= height * limit; 2827 } 2828 2829 private void startZoomScrollOut() { 2830 setHorizontalScrollBarEnabled(false); 2831 setVerticalScrollBarEnabled(false); 2832 if (getSettings().getBuiltInZoomControls()) { 2833 if (mZoomButtonsController.isVisible()) { 2834 mZoomButtonsController.setVisible(false); 2835 } 2836 } else { 2837 if (mZoomControlRunnable != null) { 2838 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 2839 } 2840 if (mZoomControls != null) { 2841 mZoomControls.hide(); 2842 } 2843 } 2844 int width = getViewWidth(); 2845 int height = getViewHeight(); 2846 int halfW = width >> 1; 2847 mLastTouchX = halfW; 2848 int halfH = height >> 1; 2849 mLastTouchY = halfH; 2850 mScroller.abortAnimation(); 2851 mZoomScrollStart = System.currentTimeMillis(); 2852 Rect zoomFrame = scrollZoomFrame(width, height 2853 , scrollZoomMagScale(mZoomScrollInvLimit)); 2854 mZoomScrollX = Math.max(0, (int) ((mScrollX + halfW) * mInvActualScale) 2855 - (zoomFrame.width() >> 1)); 2856 mZoomScrollY = Math.max(0, (int) ((mScrollY + halfH) * mInvActualScale) 2857 - (zoomFrame.height() >> 1)); 2858 scrollTo(0, 0); // triggers inval, starts animation 2859 clearTextEntry(); 2860 if (DebugFlags.WEB_VIEW) { 2861 Log.v(LOGTAG, "startZoomScrollOut mZoomScroll=(" 2862 + mZoomScrollX + ", " + mZoomScrollY +")"); 2863 } 2864 } 2865 2866 /** 2867 * @hide 2868 */ 2869 public void zoomScrollOut() { 2870 if (canZoomScrollOut() == false) { 2871 mTouchMode = TOUCH_DONE_MODE; 2872 return; 2873 } 2874 startZoomScrollOut(); 2875 mTouchMode = SCROLL_ZOOM_ANIMATION_OUT; 2876 invalidate(); 2877 } 2878 2879 private void moveZoomScrollWindow(float x, float y) { 2880 if (Math.abs(x - mLastZoomScrollRawX) < 1.5f 2881 && Math.abs(y - mLastZoomScrollRawY) < 1.5f) { 2882 return; 2883 } 2884 mLastZoomScrollRawX = x; 2885 mLastZoomScrollRawY = y; 2886 int oldX = mZoomScrollX; 2887 int oldY = mZoomScrollY; 2888 int width = getViewWidth(); 2889 int height = getViewHeight(); 2890 int maxZoomX = mContentWidth - width; 2891 if (maxZoomX > 0) { 2892 int maxScreenX = width - (int) Math.ceil(width 2893 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 2894 if (DebugFlags.WEB_VIEW) { 2895 Log.v(LOGTAG, "moveZoomScrollWindow-X" 2896 + " maxScreenX=" + maxScreenX + " width=" + width 2897 + " mZoomScrollLimit=" + mZoomScrollLimit + " x=" + x); 2898 } 2899 x += maxScreenX * mLastScrollX / maxZoomX - mLastTouchX; 2900 x *= Math.max(maxZoomX / maxScreenX, mZoomScrollInvLimit); 2901 mZoomScrollX = Math.max(0, Math.min(maxZoomX, (int) x)); 2902 } 2903 int maxZoomY = mContentHeight - height; 2904 if (maxZoomY > 0) { 2905 int maxScreenY = height - (int) Math.ceil(height 2906 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 2907 if (DebugFlags.WEB_VIEW) { 2908 Log.v(LOGTAG, "moveZoomScrollWindow-Y" 2909 + " maxScreenY=" + maxScreenY + " height=" + height 2910 + " mZoomScrollLimit=" + mZoomScrollLimit + " y=" + y); 2911 } 2912 y += maxScreenY * mLastScrollY / maxZoomY - mLastTouchY; 2913 y *= Math.max(maxZoomY / maxScreenY, mZoomScrollInvLimit); 2914 mZoomScrollY = Math.max(0, Math.min(maxZoomY, (int) y)); 2915 } 2916 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 2917 invalidate(); 2918 } 2919 if (DebugFlags.WEB_VIEW) { 2920 Log.v(LOGTAG, "moveZoomScrollWindow" 2921 + " scrollTo=(" + mZoomScrollX + ", " + mZoomScrollY + ")" 2922 + " mLastTouch=(" + mLastTouchX + ", " + mLastTouchY + ")" 2923 + " maxZoom=(" + maxZoomX + ", " + maxZoomY + ")" 2924 + " last=("+mLastScrollX+", "+mLastScrollY+")" 2925 + " x=" + x + " y=" + y); 2926 } 2927 } 2928 2929 private void setZoomScrollIn() { 2930 mZoomScrollStart = System.currentTimeMillis(); 2931 } 2932 2933 private float mZoomScrollLimit; 2934 private float mZoomScrollInvLimit; 2935 private int mLastScrollX; 2936 private int mLastScrollY; 2937 private long mZoomScrollStart; 2938 private int mZoomScrollX; 2939 private int mZoomScrollY; 2940 private float mLastZoomScrollRawX = -1000.0f; 2941 private float mLastZoomScrollRawY = -1000.0f; 2942 // The zoomed scale varies from 1.0 to DEFAULT_MIN_ZOOM_SCALE == 0.25. 2943 // The zoom animation duration SCROLL_ZOOM_DURATION == 0.5. 2944 // Two pressures compete for gridding; a high frame rate (e.g. 20 fps) 2945 // and minimizing font cache allocations (fewer frames is better). 2946 // A SCROLL_ZOOM_GRID of 6 permits about 20 zoom levels over 0.5 seconds: 2947 // the inverse of: 1.0, 1.16, 1.33, 1.5, 1.67, 1.84, 2.0, etc. to 4.0 2948 private static final int SCROLL_ZOOM_GRID = 6; 2949 private static final int SCROLL_ZOOM_DURATION = 500; 2950 // Make it easier to get to the bottom of a document by reserving a 32 2951 // pixel buffer, for when the starting drag is a bit below the bottom of 2952 // the magnify frame. 2953 private static final int SCROLL_ZOOM_FINGER_BUFFER = 32; 2954 2955 // draw history 2956 private boolean mDrawHistory = false; 2957 private Picture mHistoryPicture = null; 2958 private int mHistoryWidth = 0; 2959 private int mHistoryHeight = 0; 2960 2961 // Only check the flag, can be called from WebCore thread 2962 boolean drawHistory() { 2963 return mDrawHistory; 2964 } 2965 2966 // Should only be called in UI thread 2967 void switchOutDrawHistory() { 2968 if (null == mWebViewCore) return; // CallbackProxy may trigger this 2969 if (mDrawHistory && mWebViewCore.pictureReady()) { 2970 mDrawHistory = false; 2971 invalidate(); 2972 int oldScrollX = mScrollX; 2973 int oldScrollY = mScrollY; 2974 mScrollX = pinLocX(mScrollX); 2975 mScrollY = pinLocY(mScrollY); 2976 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 2977 mUserScroll = false; 2978 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 2979 oldScrollY); 2980 } 2981 sendOurVisibleRect(); 2982 } 2983 } 2984 2985 WebViewCore.CursorData cursorData() { 2986 WebViewCore.CursorData result = new WebViewCore.CursorData(); 2987 result.mMoveGeneration = nativeMoveGeneration(); 2988 result.mFrame = nativeCursorFramePointer(); 2989 Point position = nativeCursorPosition(); 2990 result.mX = position.x; 2991 result.mY = position.y; 2992 return result; 2993 } 2994 2995 /** 2996 * Delete text from start to end in the focused textfield. If there is no 2997 * focus, or if start == end, silently fail. If start and end are out of 2998 * order, swap them. 2999 * @param start Beginning of selection to delete. 3000 * @param end End of selection to delete. 3001 */ 3002 /* package */ void deleteSelection(int start, int end) { 3003 mTextGeneration++; 3004 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, start, end); 3005 } 3006 3007 /** 3008 * Set the selection to (start, end) in the focused textfield. If start and 3009 * end are out of order, swap them. 3010 * @param start Beginning of selection. 3011 * @param end End of selection. 3012 */ 3013 /* package */ void setSelection(int start, int end) { 3014 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3015 } 3016 3017 // Called by JNI when a touch event puts a textfield into focus. 3018 private void displaySoftKeyboard(boolean isTextView) { 3019 InputMethodManager imm = (InputMethodManager) 3020 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3021 3022 if (isTextView) { 3023 imm.showSoftInput(mWebTextView, 0); 3024 mWebTextView.enableScrollOnScreen(true); 3025 // Now we need to fake a touch event to place the cursor where the 3026 // user touched. 3027 AbsoluteLayout.LayoutParams lp = (AbsoluteLayout.LayoutParams) 3028 mWebTextView.getLayoutParams(); 3029 if (lp != null) { 3030 // Take the last touch and adjust for the location of the 3031 // WebTextView. 3032 float x = mLastTouchX + (float) (mScrollX - lp.x); 3033 float y = mLastTouchY + (float) (mScrollY - lp.y); 3034 mWebTextView.fakeTouchEvent(x, y); 3035 } 3036 } 3037 else { // used by plugins 3038 imm.showSoftInput(this, 0); 3039 } 3040 } 3041 3042 // Called by WebKit to instruct the UI to hide the keyboard 3043 private void hideSoftKeyboard() { 3044 InputMethodManager imm = (InputMethodManager) 3045 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3046 3047 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3048 } 3049 3050 /* 3051 * This method checks the current focus and cursor and potentially rebuilds 3052 * mWebTextView to have the appropriate properties, such as password, 3053 * multiline, and what text it contains. It also removes it if necessary. 3054 */ 3055 private void rebuildWebTextView() { 3056 // If the WebView does not have focus, do nothing until it gains focus. 3057 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus()) 3058 || (mTouchMode >= FIRST_SCROLL_ZOOM 3059 && mTouchMode <= LAST_SCROLL_ZOOM)) { 3060 return; 3061 } 3062 boolean alreadyThere = inEditingMode(); 3063 // inEditingMode can only return true if mWebTextView is non-null, 3064 // so we can safely call remove() if (alreadyThere) 3065 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3066 if (alreadyThere) { 3067 mWebTextView.remove(); 3068 } 3069 return; 3070 } 3071 // At this point, we know we have found an input field, so go ahead 3072 // and create the WebTextView if necessary. 3073 if (mWebTextView == null) { 3074 mWebTextView = new WebTextView(mContext, WebView.this); 3075 // Initialize our generation number. 3076 mTextGeneration = 0; 3077 } 3078 mWebTextView.setTextSize(contentToView(nativeFocusCandidateTextSize())); 3079 Rect visibleRect = new Rect(); 3080 calcOurContentVisibleRect(visibleRect); 3081 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3082 // should be in content coordinates. 3083 Rect bounds = nativeFocusCandidateNodeBounds(); 3084 if (!Rect.intersects(bounds, visibleRect)) { 3085 // Node is not on screen, so do not bother. 3086 return; 3087 } 3088 String text = nativeFocusCandidateText(); 3089 int nodePointer = nativeFocusCandidatePointer(); 3090 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3091 // It is possible that we have the same textfield, but it has moved, 3092 // i.e. In the case of opening/closing the screen. 3093 // In that case, we need to set the dimensions, but not the other 3094 // aspects. 3095 // We also need to restore the selection, which gets wrecked by 3096 // calling setTextEntryRect. 3097 Spannable spannable = (Spannable) mWebTextView.getText(); 3098 int start = Selection.getSelectionStart(spannable); 3099 int end = Selection.getSelectionEnd(spannable); 3100 // If the text has been changed by webkit, update it. However, if 3101 // there has been more UI text input, ignore it. We will receive 3102 // another update when that text is recognized. 3103 if (text != null && !text.equals(spannable.toString()) 3104 && nativeTextGeneration() == mTextGeneration) { 3105 mWebTextView.setTextAndKeepSelection(text); 3106 } else { 3107 Selection.setSelection(spannable, start, end); 3108 } 3109 } else { 3110 Rect vBox = contentToView(bounds); 3111 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3112 vBox.height()); 3113 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3114 Gravity.RIGHT : Gravity.NO_GRAVITY); 3115 // this needs to be called before update adapter thread starts to 3116 // ensure the mWebTextView has the same node pointer 3117 mWebTextView.setNodePointer(nodePointer); 3118 int maxLength = -1; 3119 boolean isTextField = nativeFocusCandidateIsTextField(); 3120 if (isTextField) { 3121 maxLength = nativeFocusCandidateMaxLength(); 3122 String name = nativeFocusCandidateName(); 3123 if (mWebViewCore.getSettings().getSaveFormData() 3124 && name != null) { 3125 Message update = mPrivateHandler.obtainMessage( 3126 REQUEST_FORM_DATA, nodePointer); 3127 RequestFormData updater = new RequestFormData(name, 3128 getUrl(), update); 3129 Thread t = new Thread(updater); 3130 t.start(); 3131 } 3132 } 3133 mWebTextView.setMaxLength(maxLength); 3134 AutoCompleteAdapter adapter = null; 3135 mWebTextView.setAdapterCustom(adapter); 3136 mWebTextView.setSingleLine(isTextField); 3137 mWebTextView.setInPassword(nativeFocusCandidateIsPassword()); 3138 if (null == text) { 3139 mWebTextView.setText("", 0, 0); 3140 if (DebugFlags.WEB_VIEW) { 3141 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3142 } 3143 } else { 3144 // Change to true to enable the old style behavior, where 3145 // entering a textfield/textarea always set the selection to the 3146 // whole field. This was desirable for the case where the user 3147 // intends to scroll past the field using the trackball. 3148 // However, it causes a problem when replying to emails - the 3149 // user expects the cursor to be at the beginning of the 3150 // textarea. Testing out a new behavior, where textfields set 3151 // selection at the end, and textareas at the beginning. 3152 if (false) { 3153 mWebTextView.setText(text, 0, text.length()); 3154 } else if (isTextField) { 3155 int length = text.length(); 3156 mWebTextView.setText(text, length, length); 3157 if (DebugFlags.WEB_VIEW) { 3158 Log.v(LOGTAG, "rebuildWebTextView length=" + length); 3159 } 3160 } else { 3161 mWebTextView.setText(text, 0, 0); 3162 if (DebugFlags.WEB_VIEW) { 3163 Log.v(LOGTAG, "rebuildWebTextView !isTextField"); 3164 } 3165 } 3166 } 3167 mWebTextView.requestFocus(); 3168 } 3169 } 3170 3171 /* 3172 * This class requests an Adapter for the WebTextView which shows past 3173 * entries stored in the database. It is a Runnable so that it can be done 3174 * in its own thread, without slowing down the UI. 3175 */ 3176 private class RequestFormData implements Runnable { 3177 private String mName; 3178 private String mUrl; 3179 private Message mUpdateMessage; 3180 3181 public RequestFormData(String name, String url, Message msg) { 3182 mName = name; 3183 mUrl = url; 3184 mUpdateMessage = msg; 3185 } 3186 3187 public void run() { 3188 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3189 if (pastEntries.size() > 0) { 3190 AutoCompleteAdapter adapter = new 3191 AutoCompleteAdapter(mContext, pastEntries); 3192 mUpdateMessage.obj = adapter; 3193 mUpdateMessage.sendToTarget(); 3194 } 3195 } 3196 } 3197 3198 // This is used to determine long press with the center key. Does not 3199 // affect long press with the trackball/touch. 3200 private boolean mGotCenterDown = false; 3201 3202 @Override 3203 public boolean onKeyDown(int keyCode, KeyEvent event) { 3204 if (DebugFlags.WEB_VIEW) { 3205 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3206 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3207 } 3208 3209 if (mNativeClass == 0) { 3210 return false; 3211 } 3212 3213 // do this hack up front, so it always works, regardless of touch-mode 3214 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3215 mAutoRedraw = !mAutoRedraw; 3216 if (mAutoRedraw) { 3217 invalidate(); 3218 } 3219 return true; 3220 } 3221 3222 // Bubble up the key event if 3223 // 1. it is a system key; or 3224 // 2. the host application wants to handle it; or 3225 // 3. webview is in scroll-zoom state; 3226 if (event.isSystem() 3227 || mCallbackProxy.uiOverrideKeyEvent(event) 3228 || (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM)) { 3229 return false; 3230 } 3231 3232 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3233 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3234 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3235 mExtendSelection = false; 3236 mShiftIsPressed = true; 3237 if (nativeHasCursorNode()) { 3238 Rect rect = nativeCursorNodeBounds(); 3239 mSelectX = contentToView(rect.left); 3240 mSelectY = contentToView(rect.top); 3241 } else { 3242 mSelectX = mScrollX + (int) mLastTouchX; 3243 mSelectY = mScrollY + (int) mLastTouchY; 3244 } 3245 nativeHideCursor(); 3246 } 3247 3248 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3249 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3250 // always handle the navigation keys in the UI thread 3251 switchOutDrawHistory(); 3252 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3253 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3254 return true; 3255 } 3256 // Bubble up the key event as WebView doesn't handle it 3257 return false; 3258 } 3259 3260 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3261 switchOutDrawHistory(); 3262 if (event.getRepeatCount() == 0) { 3263 mGotCenterDown = true; 3264 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3265 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3266 // Already checked mNativeClass, so we do not need to check it 3267 // again. 3268 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3269 return true; 3270 } 3271 // Bubble up the key event as WebView doesn't handle it 3272 return false; 3273 } 3274 3275 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3276 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3277 // turn off copy select if a shift-key combo is pressed 3278 mExtendSelection = mShiftIsPressed = false; 3279 if (mTouchMode == TOUCH_SELECT_MODE) { 3280 mTouchMode = TOUCH_INIT_MODE; 3281 } 3282 } 3283 3284 if (getSettings().getNavDump()) { 3285 switch (keyCode) { 3286 case KeyEvent.KEYCODE_4: 3287 // "/data/data/com.android.browser/displayTree.txt" 3288 nativeDumpDisplayTree(getUrl()); 3289 break; 3290 case KeyEvent.KEYCODE_5: 3291 case KeyEvent.KEYCODE_6: 3292 // 5: dump the dom tree to the file 3293 // "/data/data/com.android.browser/domTree.txt" 3294 // 6: dump the dom tree to the adb log 3295 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, 3296 (keyCode == KeyEvent.KEYCODE_5) ? 1 : 0, 0); 3297 break; 3298 case KeyEvent.KEYCODE_7: 3299 case KeyEvent.KEYCODE_8: 3300 // 7: dump the render tree to the file 3301 // "/data/data/com.android.browser/renderTree.txt" 3302 // 8: dump the render tree to the adb log 3303 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, 3304 (keyCode == KeyEvent.KEYCODE_7) ? 1 : 0, 0); 3305 break; 3306 case KeyEvent.KEYCODE_9: 3307 nativeInstrumentReport(); 3308 return true; 3309 } 3310 } 3311 3312 if (nativeCursorIsPlugin()) { 3313 nativeUpdatePluginReceivesEvents(); 3314 invalidate(); 3315 } else if (nativeCursorIsTextInput()) { 3316 // This message will put the node in focus, for the DOM's notion 3317 // of focus, and make the focuscontroller active 3318 mWebViewCore.sendMessage(EventHub.CLICK); 3319 // This will bring up the WebTextView and put it in focus, for 3320 // our view system's notion of focus 3321 rebuildWebTextView(); 3322 // Now we need to pass the event to it 3323 return mWebTextView.onKeyDown(keyCode, event); 3324 } 3325 3326 // TODO: should we pass all the keys to DOM or check the meta tag 3327 if (nativeCursorWantsKeyEvents() || true) { 3328 // pass the key to DOM 3329 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3330 // return true as DOM handles the key 3331 return true; 3332 } 3333 3334 // Bubble up the key event as WebView doesn't handle it 3335 return false; 3336 } 3337 3338 @Override 3339 public boolean onKeyUp(int keyCode, KeyEvent event) { 3340 if (DebugFlags.WEB_VIEW) { 3341 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3342 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3343 } 3344 3345 if (mNativeClass == 0) { 3346 return false; 3347 } 3348 3349 // special CALL handling when cursor node's href is "tel:XXX" 3350 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3351 String text = nativeCursorText(); 3352 if (!nativeCursorIsTextInput() && text != null 3353 && text.startsWith(SCHEME_TEL)) { 3354 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3355 getContext().startActivity(intent); 3356 return true; 3357 } 3358 } 3359 3360 // Bubble up the key event if 3361 // 1. it is a system key; or 3362 // 2. the host application wants to handle it; 3363 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3364 return false; 3365 } 3366 3367 // special handling in scroll_zoom state 3368 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 3369 if (KeyEvent.KEYCODE_DPAD_CENTER == keyCode 3370 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN) { 3371 setZoomScrollIn(); 3372 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 3373 invalidate(); 3374 return true; 3375 } 3376 return false; 3377 } 3378 3379 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3380 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3381 if (commitCopy()) { 3382 return true; 3383 } 3384 } 3385 3386 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3387 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3388 // always handle the navigation keys in the UI thread 3389 // Bubble up the key event as WebView doesn't handle it 3390 return false; 3391 } 3392 3393 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3394 // remove the long press message first 3395 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3396 mGotCenterDown = false; 3397 3398 if (mShiftIsPressed) { 3399 return false; 3400 } 3401 if (getSettings().supportZoom() 3402 && mTouchMode == TOUCH_DOUBLECLICK_MODE) { 3403 zoomScrollOut(); 3404 } else { 3405 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3406 .obtainMessage(SWITCH_TO_CLICK), TAP_TIMEOUT); 3407 if (DebugFlags.WEB_VIEW) { 3408 Log.v(LOGTAG, "TOUCH_DOUBLECLICK_MODE"); 3409 } 3410 mTouchMode = TOUCH_DOUBLECLICK_MODE; 3411 } 3412 return true; 3413 } 3414 3415 // TODO: should we pass all the keys to DOM or check the meta tag 3416 if (nativeCursorWantsKeyEvents() || true) { 3417 // pass the key to DOM 3418 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3419 // return true as DOM handles the key 3420 return true; 3421 } 3422 3423 // Bubble up the key event as WebView doesn't handle it 3424 return false; 3425 } 3426 3427 /** 3428 * @hide 3429 */ 3430 public void emulateShiftHeld() { 3431 mExtendSelection = false; 3432 mShiftIsPressed = true; 3433 nativeHideCursor(); 3434 } 3435 3436 private boolean commitCopy() { 3437 boolean copiedSomething = false; 3438 if (mExtendSelection) { 3439 // copy region so core operates on copy without touching orig. 3440 Region selection = new Region(nativeGetSelection()); 3441 if (selection.isEmpty() == false) { 3442 Toast.makeText(mContext 3443 , com.android.internal.R.string.text_copied 3444 , Toast.LENGTH_SHORT).show(); 3445 mWebViewCore.sendMessage(EventHub.GET_SELECTION, selection); 3446 copiedSomething = true; 3447 } 3448 mExtendSelection = false; 3449 } 3450 mShiftIsPressed = false; 3451 if (mTouchMode == TOUCH_SELECT_MODE) { 3452 mTouchMode = TOUCH_INIT_MODE; 3453 } 3454 return copiedSomething; 3455 } 3456 3457 // Set this as a hierarchy change listener so we can know when this view 3458 // is removed and still have access to our parent. 3459 @Override 3460 protected void onAttachedToWindow() { 3461 super.onAttachedToWindow(); 3462 ViewParent parent = getParent(); 3463 if (parent instanceof ViewGroup) { 3464 ViewGroup p = (ViewGroup) parent; 3465 p.setOnHierarchyChangeListener(this); 3466 } 3467 } 3468 3469 @Override 3470 protected void onDetachedFromWindow() { 3471 super.onDetachedFromWindow(); 3472 ViewParent parent = getParent(); 3473 if (parent instanceof ViewGroup) { 3474 ViewGroup p = (ViewGroup) parent; 3475 p.setOnHierarchyChangeListener(null); 3476 } 3477 3478 // Clean up the zoom controller 3479 mZoomButtonsController.setVisible(false); 3480 } 3481 3482 // Implementation for OnHierarchyChangeListener 3483 public void onChildViewAdded(View parent, View child) {} 3484 3485 public void onChildViewRemoved(View p, View child) { 3486 if (child == this) { 3487 if (inEditingMode()) { 3488 clearTextEntry(); 3489 } 3490 } 3491 } 3492 3493 /** 3494 * @deprecated WebView should not have implemented 3495 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3496 * does nothing now. 3497 */ 3498 @Deprecated 3499 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3500 } 3501 3502 // To avoid drawing the cursor ring, and remove the TextView when our window 3503 // loses focus. 3504 @Override 3505 public void onWindowFocusChanged(boolean hasWindowFocus) { 3506 if (hasWindowFocus) { 3507 if (hasFocus()) { 3508 // If our window regained focus, and we have focus, then begin 3509 // drawing the cursor ring 3510 mDrawCursorRing = true; 3511 if (mNativeClass != 0) { 3512 nativeRecordButtons(true, false, true); 3513 } 3514 } else { 3515 // If our window gained focus, but we do not have it, do not 3516 // draw the cursor ring. 3517 mDrawCursorRing = false; 3518 // We do not call nativeRecordButtons here because we assume 3519 // that when we lost focus, or window focus, it got called with 3520 // false for the first parameter 3521 } 3522 } else { 3523 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3524 /* 3525 * The zoom controls come in their own window, so our window 3526 * loses focus. Our policy is to not draw the cursor ring if 3527 * our window is not focused, but this is an exception since 3528 * the user can still navigate the web page with the zoom 3529 * controls showing. 3530 */ 3531 // If our window has lost focus, stop drawing the cursor ring 3532 mDrawCursorRing = false; 3533 } 3534 mGotKeyDown = false; 3535 mShiftIsPressed = false; 3536 if (mNativeClass != 0) { 3537 nativeRecordButtons(false, false, true); 3538 } 3539 setFocusControllerInactive(); 3540 } 3541 invalidate(); 3542 super.onWindowFocusChanged(hasWindowFocus); 3543 } 3544 3545 /* 3546 * Pass a message to WebCore Thread, telling the WebCore::Page's 3547 * FocusController to be "inactive" so that it will 3548 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3549 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3550 */ 3551 private void setFocusControllerInactive() { 3552 // Do not need to also check whether mWebViewCore is null, because 3553 // mNativeClass is only set if mWebViewCore is non null 3554 if (mNativeClass == 0) return; 3555 mWebViewCore.sendMessage(EventHub.SET_INACTIVE); 3556 } 3557 3558 @Override 3559 protected void onFocusChanged(boolean focused, int direction, 3560 Rect previouslyFocusedRect) { 3561 if (DebugFlags.WEB_VIEW) { 3562 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3563 } 3564 if (focused) { 3565 // When we regain focus, if we have window focus, resume drawing 3566 // the cursor ring 3567 if (hasWindowFocus()) { 3568 mDrawCursorRing = true; 3569 if (mNativeClass != 0) { 3570 nativeRecordButtons(true, false, true); 3571 } 3572 //} else { 3573 // The WebView has gained focus while we do not have 3574 // windowfocus. When our window lost focus, we should have 3575 // called nativeRecordButtons(false...) 3576 } 3577 } else { 3578 // When we lost focus, unless focus went to the TextView (which is 3579 // true if we are in editing mode), stop drawing the cursor ring. 3580 if (!inEditingMode()) { 3581 mDrawCursorRing = false; 3582 if (mNativeClass != 0) { 3583 nativeRecordButtons(false, false, true); 3584 } 3585 setFocusControllerInactive(); 3586 } 3587 mGotKeyDown = false; 3588 } 3589 3590 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3591 } 3592 3593 @Override 3594 protected void onSizeChanged(int w, int h, int ow, int oh) { 3595 super.onSizeChanged(w, h, ow, oh); 3596 // Center zooming to the center of the screen. 3597 mZoomCenterX = getViewWidth() * .5f; 3598 mZoomCenterY = getViewHeight() * .5f; 3599 3600 // update mMinZoomScale if the minimum zoom scale is not fixed 3601 if (!mMinZoomScaleFixed) { 3602 mMinZoomScale = (float) getViewWidth() 3603 / Math.max(ZOOM_OUT_WIDTH, mContentWidth); 3604 } 3605 3606 // we always force, in case our height changed, in which case we still 3607 // want to send the notification over to webkit 3608 setNewZoomScale(mActualScale, true); 3609 } 3610 3611 @Override 3612 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3613 super.onScrollChanged(l, t, oldl, oldt); 3614 sendOurVisibleRect(); 3615 } 3616 3617 3618 @Override 3619 public boolean dispatchKeyEvent(KeyEvent event) { 3620 boolean dispatch = true; 3621 3622 if (!inEditingMode()) { 3623 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3624 mGotKeyDown = true; 3625 } else { 3626 if (!mGotKeyDown) { 3627 /* 3628 * We got a key up for which we were not the recipient of 3629 * the original key down. Don't give it to the view. 3630 */ 3631 dispatch = false; 3632 } 3633 mGotKeyDown = false; 3634 } 3635 } 3636 3637 if (dispatch) { 3638 return super.dispatchKeyEvent(event); 3639 } else { 3640 // We didn't dispatch, so let something else handle the key 3641 return false; 3642 } 3643 } 3644 3645 // Here are the snap align logic: 3646 // 1. If it starts nearly horizontally or vertically, snap align; 3647 // 2. If there is a dramitic direction change, let it go; 3648 // 3. If there is a same direction back and forth, lock it. 3649 3650 // adjustable parameters 3651 private int mMinLockSnapReverseDistance; 3652 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 3653 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 3654 3655 @Override 3656 public boolean onTouchEvent(MotionEvent ev) { 3657 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 3658 return false; 3659 } 3660 3661 if (DebugFlags.WEB_VIEW) { 3662 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 3663 + mTouchMode); 3664 } 3665 3666 int action = ev.getAction(); 3667 float x = ev.getX(); 3668 float y = ev.getY(); 3669 long eventTime = ev.getEventTime(); 3670 3671 // Due to the touch screen edge effect, a touch closer to the edge 3672 // always snapped to the edge. As getViewWidth() can be different from 3673 // getWidth() due to the scrollbar, adjusting the point to match 3674 // getViewWidth(). Same applied to the height. 3675 if (x > getViewWidth() - 1) { 3676 x = getViewWidth() - 1; 3677 } 3678 if (y > getViewHeight() - 1) { 3679 y = getViewHeight() - 1; 3680 } 3681 3682 // pass the touch events from UI thread to WebCore thread 3683 if (mForwardTouchEvents && mTouchMode != SCROLL_ZOOM_OUT 3684 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN 3685 && mTouchMode != SCROLL_ZOOM_ANIMATION_OUT 3686 && (action != MotionEvent.ACTION_MOVE || 3687 eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 3688 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 3689 ted.mAction = action; 3690 ted.mX = viewToContent((int) x + mScrollX); 3691 ted.mY = viewToContent((int) y + mScrollY); 3692 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 3693 mLastSentTouchTime = eventTime; 3694 } 3695 3696 int deltaX = (int) (mLastTouchX - x); 3697 int deltaY = (int) (mLastTouchY - y); 3698 3699 switch (action) { 3700 case MotionEvent.ACTION_DOWN: { 3701 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3702 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3703 // no interaction while animation is in progress 3704 break; 3705 } else if (mTouchMode == SCROLL_ZOOM_OUT) { 3706 mLastScrollX = mZoomScrollX; 3707 mLastScrollY = mZoomScrollY; 3708 // If two taps are close, ignore the first tap 3709 } else if (!mScroller.isFinished()) { 3710 mScroller.abortAnimation(); 3711 mTouchMode = TOUCH_DRAG_START_MODE; 3712 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 3713 } else if (mShiftIsPressed) { 3714 mSelectX = mScrollX + (int) x; 3715 mSelectY = mScrollY + (int) y; 3716 mTouchMode = TOUCH_SELECT_MODE; 3717 if (DebugFlags.WEB_VIEW) { 3718 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 3719 } 3720 nativeMoveSelection(viewToContent(mSelectX) 3721 , viewToContent(mSelectY), false); 3722 mTouchSelection = mExtendSelection = true; 3723 } else { 3724 mTouchMode = TOUCH_INIT_MODE; 3725 mPreventDrag = mForwardTouchEvents; 3726 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 3727 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 3728 (eventTime - mLastTouchUpTime), eventTime); 3729 } 3730 } 3731 // Trigger the link 3732 if (mTouchMode == TOUCH_INIT_MODE) { 3733 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3734 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 3735 } 3736 // Remember where the motion event started 3737 mLastTouchX = x; 3738 mLastTouchY = y; 3739 mLastTouchTime = eventTime; 3740 mVelocityTracker = VelocityTracker.obtain(); 3741 mSnapScrollMode = SNAP_NONE; 3742 break; 3743 } 3744 case MotionEvent.ACTION_MOVE: { 3745 if (mTouchMode == TOUCH_DONE_MODE 3746 || mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3747 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3748 // no dragging during scroll zoom animation 3749 break; 3750 } 3751 if (mTouchMode == SCROLL_ZOOM_OUT) { 3752 // while fully zoomed out, move the virtual window 3753 moveZoomScrollWindow(x, y); 3754 break; 3755 } 3756 mVelocityTracker.addMovement(ev); 3757 3758 if (mTouchMode != TOUCH_DRAG_MODE) { 3759 if (mTouchMode == TOUCH_SELECT_MODE) { 3760 mSelectX = mScrollX + (int) x; 3761 mSelectY = mScrollY + (int) y; 3762 if (DebugFlags.WEB_VIEW) { 3763 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 3764 } 3765 nativeMoveSelection(viewToContent(mSelectX) 3766 , viewToContent(mSelectY), true); 3767 invalidate(); 3768 break; 3769 } 3770 if (mPreventDrag || (deltaX * deltaX + deltaY * deltaY) 3771 < mTouchSlopSquare) { 3772 break; 3773 } 3774 3775 if (mTouchMode == TOUCH_SHORTPRESS_MODE 3776 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3777 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3778 } else if (mTouchMode == TOUCH_INIT_MODE) { 3779 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3780 } 3781 3782 // if it starts nearly horizontal or vertical, enforce it 3783 int ax = Math.abs(deltaX); 3784 int ay = Math.abs(deltaY); 3785 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 3786 mSnapScrollMode = SNAP_X; 3787 mSnapPositive = deltaX > 0; 3788 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 3789 mSnapScrollMode = SNAP_Y; 3790 mSnapPositive = deltaY > 0; 3791 } 3792 3793 mTouchMode = TOUCH_DRAG_MODE; 3794 WebViewCore.pauseUpdate(mWebViewCore); 3795 nativeHideCursor(); 3796 // remove the zoom anchor if there is any 3797 if (mZoomScale != 0) { 3798 mWebViewCore 3799 .sendMessage(EventHub.SET_SNAP_ANCHOR, 0, 0); 3800 } 3801 WebSettings settings = getSettings(); 3802 if (settings.supportZoom() 3803 && settings.getBuiltInZoomControls() 3804 && !mZoomButtonsController.isVisible() 3805 && (canZoomScrollOut() || 3806 mMinZoomScale < mMaxZoomScale)) { 3807 mZoomButtonsController.setVisible(true); 3808 } 3809 } 3810 3811 // do pan 3812 int newScrollX = pinLocX(mScrollX + deltaX); 3813 deltaX = newScrollX - mScrollX; 3814 int newScrollY = pinLocY(mScrollY + deltaY); 3815 deltaY = newScrollY - mScrollY; 3816 boolean done = false; 3817 if (deltaX == 0 && deltaY == 0) { 3818 done = true; 3819 } else { 3820 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 3821 int ax = Math.abs(deltaX); 3822 int ay = Math.abs(deltaY); 3823 if (mSnapScrollMode == SNAP_X) { 3824 // radical change means getting out of snap mode 3825 if (ay > MAX_SLOPE_FOR_DIAG * ax 3826 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3827 mSnapScrollMode = SNAP_NONE; 3828 } 3829 // reverse direction means lock in the snap mode 3830 if ((ax > MAX_SLOPE_FOR_DIAG * ay) && 3831 ((mSnapPositive && 3832 deltaX < -mMinLockSnapReverseDistance) 3833 || (!mSnapPositive && 3834 deltaX > mMinLockSnapReverseDistance))) { 3835 mSnapScrollMode = SNAP_X_LOCK; 3836 } 3837 } else { 3838 // radical change means getting out of snap mode 3839 if ((ax > MAX_SLOPE_FOR_DIAG * ay) 3840 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3841 mSnapScrollMode = SNAP_NONE; 3842 } 3843 // reverse direction means lock in the snap mode 3844 if ((ay > MAX_SLOPE_FOR_DIAG * ax) && 3845 ((mSnapPositive && 3846 deltaY < -mMinLockSnapReverseDistance) 3847 || (!mSnapPositive && 3848 deltaY > mMinLockSnapReverseDistance))) { 3849 mSnapScrollMode = SNAP_Y_LOCK; 3850 } 3851 } 3852 } 3853 3854 if (mSnapScrollMode == SNAP_X 3855 || mSnapScrollMode == SNAP_X_LOCK) { 3856 scrollBy(deltaX, 0); 3857 mLastTouchX = x; 3858 } else if (mSnapScrollMode == SNAP_Y 3859 || mSnapScrollMode == SNAP_Y_LOCK) { 3860 scrollBy(0, deltaY); 3861 mLastTouchY = y; 3862 } else { 3863 scrollBy(deltaX, deltaY); 3864 mLastTouchX = x; 3865 mLastTouchY = y; 3866 } 3867 mLastTouchTime = eventTime; 3868 mUserScroll = true; 3869 } 3870 3871 if (!getSettings().getBuiltInZoomControls()) { 3872 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 3873 boolean showMagnify = canZoomScrollOut(); 3874 if (mZoomControls != null && (showPlusMinus || showMagnify)) { 3875 if (mZoomControls.getVisibility() == View.VISIBLE) { 3876 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 3877 } else { 3878 mZoomControls.show(showPlusMinus, showMagnify); 3879 } 3880 mPrivateHandler.postDelayed(mZoomControlRunnable, 3881 ZOOM_CONTROLS_TIMEOUT); 3882 } 3883 } 3884 3885 if (done) { 3886 // return false to indicate that we can't pan out of the 3887 // view space 3888 return false; 3889 } 3890 break; 3891 } 3892 case MotionEvent.ACTION_UP: { 3893 mLastTouchUpTime = eventTime; 3894 switch (mTouchMode) { 3895 case TOUCH_INIT_MODE: // tap 3896 case TOUCH_SHORTPRESS_START_MODE: 3897 case TOUCH_SHORTPRESS_MODE: 3898 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3899 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3900 mTouchMode = TOUCH_DONE_MODE; 3901 doShortPress(); 3902 break; 3903 case TOUCH_SELECT_MODE: 3904 commitCopy(); 3905 mTouchSelection = false; 3906 break; 3907 case SCROLL_ZOOM_ANIMATION_IN: 3908 case SCROLL_ZOOM_ANIMATION_OUT: 3909 // no action during scroll animation 3910 break; 3911 case SCROLL_ZOOM_OUT: 3912 if (DebugFlags.WEB_VIEW) { 3913 Log.v(LOGTAG, "ACTION_UP SCROLL_ZOOM_OUT" 3914 + " eventTime - mLastTouchTime=" 3915 + (eventTime - mLastTouchTime)); 3916 } 3917 // for now, always zoom back when the drag completes 3918 if (true || eventTime - mLastTouchTime < TAP_TIMEOUT) { 3919 // but if we tap, zoom in where we tap 3920 if (eventTime - mLastTouchTime < TAP_TIMEOUT) { 3921 zoomScrollTap(x, y); 3922 } 3923 // start zooming in back to the original view 3924 setZoomScrollIn(); 3925 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 3926 invalidate(); 3927 } 3928 break; 3929 case TOUCH_DRAG_MODE: 3930 // if the user waits a while w/o moving before the 3931 // up, we don't want to do a fling 3932 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 3933 mVelocityTracker.addMovement(ev); 3934 doFling(); 3935 break; 3936 } 3937 WebViewCore.resumeUpdate(mWebViewCore); 3938 break; 3939 case TOUCH_DRAG_START_MODE: 3940 case TOUCH_DONE_MODE: 3941 // do nothing 3942 break; 3943 } 3944 // we also use mVelocityTracker == null to tell us that we are 3945 // not "moving around", so we can take the slower/prettier 3946 // mode in the drawing code 3947 if (mVelocityTracker != null) { 3948 mVelocityTracker.recycle(); 3949 mVelocityTracker = null; 3950 } 3951 break; 3952 } 3953 case MotionEvent.ACTION_CANCEL: { 3954 // we also use mVelocityTracker == null to tell us that we are 3955 // not "moving around", so we can take the slower/prettier 3956 // mode in the drawing code 3957 if (mVelocityTracker != null) { 3958 mVelocityTracker.recycle(); 3959 mVelocityTracker = null; 3960 } 3961 if (mTouchMode == SCROLL_ZOOM_OUT || 3962 mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 3963 scrollTo(mZoomScrollX, mZoomScrollY); 3964 } else if (mTouchMode == TOUCH_DRAG_MODE) { 3965 WebViewCore.resumeUpdate(mWebViewCore); 3966 } 3967 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3968 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3969 mTouchMode = TOUCH_DONE_MODE; 3970 nativeHideCursor(); 3971 break; 3972 } 3973 } 3974 return true; 3975 } 3976 3977 private long mTrackballFirstTime = 0; 3978 private long mTrackballLastTime = 0; 3979 private float mTrackballRemainsX = 0.0f; 3980 private float mTrackballRemainsY = 0.0f; 3981 private int mTrackballXMove = 0; 3982 private int mTrackballYMove = 0; 3983 private boolean mExtendSelection = false; 3984 private boolean mTouchSelection = false; 3985 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 3986 private static final int TRACKBALL_TIMEOUT = 200; 3987 private static final int TRACKBALL_WAIT = 100; 3988 private static final int TRACKBALL_SCALE = 400; 3989 private static final int TRACKBALL_SCROLL_COUNT = 5; 3990 private static final int TRACKBALL_MOVE_COUNT = 10; 3991 private static final int TRACKBALL_MULTIPLIER = 3; 3992 private static final int SELECT_CURSOR_OFFSET = 16; 3993 private int mSelectX = 0; 3994 private int mSelectY = 0; 3995 private boolean mShiftIsPressed = false; 3996 private boolean mTrackballDown = false; 3997 private long mTrackballUpTime = 0; 3998 private long mLastCursorTime = 0; 3999 private Rect mLastCursorBounds; 4000 4001 // Set by default; BrowserActivity clears to interpret trackball data 4002 // directly for movement. Currently, the framework only passes 4003 // arrow key events, not trackball events, from one child to the next 4004 private boolean mMapTrackballToArrowKeys = true; 4005 4006 public void setMapTrackballToArrowKeys(boolean setMap) { 4007 mMapTrackballToArrowKeys = setMap; 4008 } 4009 4010 void resetTrackballTime() { 4011 mTrackballLastTime = 0; 4012 } 4013 4014 @Override 4015 public boolean onTrackballEvent(MotionEvent ev) { 4016 long time = ev.getEventTime(); 4017 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4018 if (ev.getY() > 0) pageDown(true); 4019 if (ev.getY() < 0) pageUp(true); 4020 return true; 4021 } 4022 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4023 mPrivateHandler.removeMessages(SWITCH_TO_CLICK); 4024 mTrackballDown = true; 4025 if (mNativeClass != 0) { 4026 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4027 } 4028 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4029 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4030 nativeSelectBestAt(mLastCursorBounds); 4031 } 4032 if (DebugFlags.WEB_VIEW) { 4033 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4034 + " time=" + time 4035 + " mLastCursorTime=" + mLastCursorTime); 4036 } 4037 if (isInTouchMode()) requestFocusFromTouch(); 4038 return false; // let common code in onKeyDown at it 4039 } 4040 if (ev.getAction() == MotionEvent.ACTION_UP) { 4041 // LONG_PRESS_CENTER is set in common onKeyDown 4042 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4043 mTrackballDown = false; 4044 mTrackballUpTime = time; 4045 if (mShiftIsPressed) { 4046 if (mExtendSelection) { 4047 commitCopy(); 4048 } else { 4049 mExtendSelection = true; 4050 } 4051 } 4052 if (DebugFlags.WEB_VIEW) { 4053 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4054 + " time=" + time 4055 ); 4056 } 4057 return false; // let common code in onKeyUp at it 4058 } 4059 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4060 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4061 return false; 4062 } 4063 // no move if we're still waiting on SWITCH_TO_CLICK timeout 4064 if (mTouchMode == TOUCH_DOUBLECLICK_MODE) { 4065 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent 2 click quit"); 4066 return true; 4067 } 4068 if (mTrackballDown) { 4069 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4070 return true; // discard move if trackball is down 4071 } 4072 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4073 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4074 return true; 4075 } 4076 // TODO: alternatively we can do panning as touch does 4077 switchOutDrawHistory(); 4078 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4079 if (DebugFlags.WEB_VIEW) { 4080 Log.v(LOGTAG, "onTrackballEvent time=" 4081 + time + " last=" + mTrackballLastTime); 4082 } 4083 mTrackballFirstTime = time; 4084 mTrackballXMove = mTrackballYMove = 0; 4085 } 4086 mTrackballLastTime = time; 4087 if (DebugFlags.WEB_VIEW) { 4088 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4089 } 4090 mTrackballRemainsX += ev.getX(); 4091 mTrackballRemainsY += ev.getY(); 4092 doTrackball(time); 4093 return true; 4094 } 4095 4096 void moveSelection(float xRate, float yRate) { 4097 if (mNativeClass == 0) 4098 return; 4099 int width = getViewWidth(); 4100 int height = getViewHeight(); 4101 mSelectX += scaleTrackballX(xRate, width); 4102 mSelectY += scaleTrackballY(yRate, height); 4103 int maxX = width + mScrollX; 4104 int maxY = height + mScrollY; 4105 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4106 , mSelectX)); 4107 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4108 , mSelectY)); 4109 if (DebugFlags.WEB_VIEW) { 4110 Log.v(LOGTAG, "moveSelection" 4111 + " mSelectX=" + mSelectX 4112 + " mSelectY=" + mSelectY 4113 + " mScrollX=" + mScrollX 4114 + " mScrollY=" + mScrollY 4115 + " xRate=" + xRate 4116 + " yRate=" + yRate 4117 ); 4118 } 4119 nativeMoveSelection(viewToContent(mSelectX) 4120 , viewToContent(mSelectY), mExtendSelection); 4121 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4122 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4123 : 0; 4124 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4125 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4126 : 0; 4127 pinScrollBy(scrollX, scrollY, true, 0); 4128 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4129 requestRectangleOnScreen(select); 4130 invalidate(); 4131 } 4132 4133 private int scaleTrackballX(float xRate, int width) { 4134 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4135 int nextXMove = xMove; 4136 if (xMove > 0) { 4137 if (xMove > mTrackballXMove) { 4138 xMove -= mTrackballXMove; 4139 } 4140 } else if (xMove < mTrackballXMove) { 4141 xMove -= mTrackballXMove; 4142 } 4143 mTrackballXMove = nextXMove; 4144 return xMove; 4145 } 4146 4147 private int scaleTrackballY(float yRate, int height) { 4148 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4149 int nextYMove = yMove; 4150 if (yMove > 0) { 4151 if (yMove > mTrackballYMove) { 4152 yMove -= mTrackballYMove; 4153 } 4154 } else if (yMove < mTrackballYMove) { 4155 yMove -= mTrackballYMove; 4156 } 4157 mTrackballYMove = nextYMove; 4158 return yMove; 4159 } 4160 4161 private int keyCodeToSoundsEffect(int keyCode) { 4162 switch(keyCode) { 4163 case KeyEvent.KEYCODE_DPAD_UP: 4164 return SoundEffectConstants.NAVIGATION_UP; 4165 case KeyEvent.KEYCODE_DPAD_RIGHT: 4166 return SoundEffectConstants.NAVIGATION_RIGHT; 4167 case KeyEvent.KEYCODE_DPAD_DOWN: 4168 return SoundEffectConstants.NAVIGATION_DOWN; 4169 case KeyEvent.KEYCODE_DPAD_LEFT: 4170 return SoundEffectConstants.NAVIGATION_LEFT; 4171 } 4172 throw new IllegalArgumentException("keyCode must be one of " + 4173 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4174 "KEYCODE_DPAD_LEFT}."); 4175 } 4176 4177 private void doTrackball(long time) { 4178 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4179 if (elapsed == 0) { 4180 elapsed = TRACKBALL_TIMEOUT; 4181 } 4182 float xRate = mTrackballRemainsX * 1000 / elapsed; 4183 float yRate = mTrackballRemainsY * 1000 / elapsed; 4184 if (mShiftIsPressed) { 4185 moveSelection(xRate, yRate); 4186 mTrackballRemainsX = mTrackballRemainsY = 0; 4187 return; 4188 } 4189 float ax = Math.abs(xRate); 4190 float ay = Math.abs(yRate); 4191 float maxA = Math.max(ax, ay); 4192 if (DebugFlags.WEB_VIEW) { 4193 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4194 + " xRate=" + xRate 4195 + " yRate=" + yRate 4196 + " mTrackballRemainsX=" + mTrackballRemainsX 4197 + " mTrackballRemainsY=" + mTrackballRemainsY); 4198 } 4199 int width = mContentWidth - getViewWidth(); 4200 int height = mContentHeight - getViewHeight(); 4201 if (width < 0) width = 0; 4202 if (height < 0) height = 0; 4203 if (mTouchMode == SCROLL_ZOOM_OUT) { 4204 int oldX = mZoomScrollX; 4205 int oldY = mZoomScrollY; 4206 int maxWH = Math.max(width, height); 4207 mZoomScrollX += scaleTrackballX(xRate, maxWH); 4208 mZoomScrollY += scaleTrackballY(yRate, maxWH); 4209 if (DebugFlags.WEB_VIEW) { 4210 Log.v(LOGTAG, "doTrackball SCROLL_ZOOM_OUT" 4211 + " mZoomScrollX=" + mZoomScrollX 4212 + " mZoomScrollY=" + mZoomScrollY); 4213 } 4214 mZoomScrollX = Math.min(width, Math.max(0, mZoomScrollX)); 4215 mZoomScrollY = Math.min(height, Math.max(0, mZoomScrollY)); 4216 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 4217 invalidate(); 4218 } 4219 mTrackballRemainsX = mTrackballRemainsY = 0; 4220 return; 4221 } 4222 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4223 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4224 maxA = Math.max(ax, ay); 4225 int count = Math.max(0, (int) maxA); 4226 int oldScrollX = mScrollX; 4227 int oldScrollY = mScrollY; 4228 if (count > 0) { 4229 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4230 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4231 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4232 KeyEvent.KEYCODE_DPAD_RIGHT; 4233 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4234 if (DebugFlags.WEB_VIEW) { 4235 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4236 + " count=" + count 4237 + " mTrackballRemainsX=" + mTrackballRemainsX 4238 + " mTrackballRemainsY=" + mTrackballRemainsY); 4239 } 4240 if (navHandledKey(selectKeyCode, count, false, time, false)) { 4241 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4242 } 4243 mTrackballRemainsX = mTrackballRemainsY = 0; 4244 } 4245 if (count >= TRACKBALL_SCROLL_COUNT) { 4246 int xMove = scaleTrackballX(xRate, width); 4247 int yMove = scaleTrackballY(yRate, height); 4248 if (DebugFlags.WEB_VIEW) { 4249 Log.v(LOGTAG, "doTrackball pinScrollBy" 4250 + " count=" + count 4251 + " xMove=" + xMove + " yMove=" + yMove 4252 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4253 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4254 ); 4255 } 4256 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4257 xMove = 0; 4258 } 4259 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4260 yMove = 0; 4261 } 4262 if (xMove != 0 || yMove != 0) { 4263 pinScrollBy(xMove, yMove, true, 0); 4264 } 4265 mUserScroll = true; 4266 } 4267 } 4268 4269 public void flingScroll(int vx, int vy) { 4270 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4271 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4272 4273 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 4274 invalidate(); 4275 } 4276 4277 private void doFling() { 4278 if (mVelocityTracker == null) { 4279 return; 4280 } 4281 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4282 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4283 4284 mVelocityTracker.computeCurrentVelocity(1000); 4285 int vx = (int) mVelocityTracker.getXVelocity(); 4286 int vy = (int) mVelocityTracker.getYVelocity(); 4287 4288 if (mSnapScrollMode != SNAP_NONE) { 4289 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_X_LOCK) { 4290 vy = 0; 4291 } else { 4292 vx = 0; 4293 } 4294 } 4295 4296 if (true /* EMG release: make our fling more like Maps' */) { 4297 // maps cuts their velocity in half 4298 vx = vx * 3 / 4; 4299 vy = vy * 3 / 4; 4300 } 4301 4302 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 4303 // TODO: duration is calculated based on velocity, if the range is 4304 // small, the animation will stop before duration is up. We may 4305 // want to calculate how long the animation is going to run to precisely 4306 // resume the webcore update. 4307 final int time = mScroller.getDuration(); 4308 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_UPDATE, time); 4309 invalidate(); 4310 } 4311 4312 private boolean zoomWithPreview(float scale) { 4313 float oldScale = mActualScale; 4314 4315 // snap to DEFAULT_SCALE if it is close 4316 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 4317 scale = mDefaultScale; 4318 } 4319 4320 setNewZoomScale(scale, false); 4321 4322 if (oldScale != mActualScale) { 4323 // use mZoomPickerScale to see zoom preview first 4324 mZoomStart = SystemClock.uptimeMillis(); 4325 mInvInitialZoomScale = 1.0f / oldScale; 4326 mInvFinalZoomScale = 1.0f / mActualScale; 4327 mZoomScale = mActualScale; 4328 invalidate(); 4329 return true; 4330 } else { 4331 return false; 4332 } 4333 } 4334 4335 /** 4336 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 4337 * in charge of installing this view to the view hierarchy. This view will 4338 * become visible when the user starts scrolling via touch and fade away if 4339 * the user does not interact with it. 4340 * <p/> 4341 * API version 3 introduces a built-in zoom mechanism that is shown 4342 * automatically by the MapView. This is the preferred approach for 4343 * showing the zoom UI. 4344 * 4345 * @deprecated The built-in zoom mechanism is preferred, see 4346 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 4347 */ 4348 @Deprecated 4349 public View getZoomControls() { 4350 if (!getSettings().supportZoom()) { 4351 Log.w(LOGTAG, "This WebView doesn't support zoom."); 4352 return null; 4353 } 4354 if (mZoomControls == null) { 4355 mZoomControls = createZoomControls(); 4356 4357 /* 4358 * need to be set to VISIBLE first so that getMeasuredHeight() in 4359 * {@link #onSizeChanged()} can return the measured value for proper 4360 * layout. 4361 */ 4362 mZoomControls.setVisibility(View.VISIBLE); 4363 mZoomControlRunnable = new Runnable() { 4364 public void run() { 4365 4366 /* Don't dismiss the controls if the user has 4367 * focus on them. Wait and check again later. 4368 */ 4369 if (!mZoomControls.hasFocus()) { 4370 mZoomControls.hide(); 4371 } else { 4372 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4373 mPrivateHandler.postDelayed(mZoomControlRunnable, 4374 ZOOM_CONTROLS_TIMEOUT); 4375 } 4376 } 4377 }; 4378 } 4379 return mZoomControls; 4380 } 4381 4382 private ExtendedZoomControls createZoomControls() { 4383 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 4384 , null); 4385 zoomControls.setOnZoomInClickListener(new OnClickListener() { 4386 public void onClick(View v) { 4387 // reset time out 4388 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4389 mPrivateHandler.postDelayed(mZoomControlRunnable, 4390 ZOOM_CONTROLS_TIMEOUT); 4391 zoomIn(); 4392 } 4393 }); 4394 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 4395 public void onClick(View v) { 4396 // reset time out 4397 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4398 mPrivateHandler.postDelayed(mZoomControlRunnable, 4399 ZOOM_CONTROLS_TIMEOUT); 4400 zoomOut(); 4401 } 4402 }); 4403 zoomControls.setOnZoomMagnifyClickListener(new OnClickListener() { 4404 public void onClick(View v) { 4405 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4406 mPrivateHandler.postDelayed(mZoomControlRunnable, 4407 ZOOM_CONTROLS_TIMEOUT); 4408 zoomScrollOut(); 4409 } 4410 }); 4411 return zoomControls; 4412 } 4413 4414 /** 4415 * Gets the {@link ZoomButtonsController} which can be used to add 4416 * additional buttons to the zoom controls window. 4417 * 4418 * @return The instance of {@link ZoomButtonsController} used by this class, 4419 * or null if it is unavailable. 4420 * @hide 4421 */ 4422 public ZoomButtonsController getZoomButtonsController() { 4423 return mZoomButtonsController; 4424 } 4425 4426 /** 4427 * Perform zoom in in the webview 4428 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 4429 */ 4430 public boolean zoomIn() { 4431 // TODO: alternatively we can disallow this during draw history mode 4432 switchOutDrawHistory(); 4433 return zoomWithPreview(mActualScale * 1.25f); 4434 } 4435 4436 /** 4437 * Perform zoom out in the webview 4438 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 4439 */ 4440 public boolean zoomOut() { 4441 // TODO: alternatively we can disallow this during draw history mode 4442 switchOutDrawHistory(); 4443 return zoomWithPreview(mActualScale * 0.8f); 4444 } 4445 4446 private void updateSelection() { 4447 if (mNativeClass == 0) { 4448 return; 4449 } 4450 // mLastTouchX and mLastTouchY are the point in the current viewport 4451 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4452 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4453 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 4454 contentX + mNavSlop, contentY + mNavSlop); 4455 nativeSelectBestAt(rect); 4456 } 4457 4458 /*package*/ void shortPressOnTextField() { 4459 if (inEditingMode()) { 4460 View v = mWebTextView; 4461 int x = viewToContent((v.getLeft() + v.getRight()) >> 1); 4462 int y = viewToContent((v.getTop() + v.getBottom()) >> 1); 4463 nativeMotionUp(x, y, mNavSlop); 4464 } 4465 } 4466 4467 private void doShortPress() { 4468 if (mNativeClass == 0) { 4469 return; 4470 } 4471 switchOutDrawHistory(); 4472 // mLastTouchX and mLastTouchY are the point in the current viewport 4473 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4474 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4475 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 4476 if (mLogEvent) { 4477 Checkin.updateStats(mContext.getContentResolver(), 4478 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 4479 } 4480 } 4481 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 4482 playSoundEffect(SoundEffectConstants.CLICK); 4483 } 4484 } 4485 4486 // Called by JNI to handle a touch on a node representing an email address, 4487 // address, or phone number 4488 private void overrideLoading(String url) { 4489 mCallbackProxy.uiOverrideUrlLoading(url); 4490 } 4491 4492 @Override 4493 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 4494 boolean result = false; 4495 if (inEditingMode()) { 4496 result = mWebTextView.requestFocus(direction, 4497 previouslyFocusedRect); 4498 } else { 4499 result = super.requestFocus(direction, previouslyFocusedRect); 4500 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 4501 // For cases such as GMail, where we gain focus from a direction, 4502 // we want to move to the first available link. 4503 // FIXME: If there are no visible links, we may not want to 4504 int fakeKeyDirection = 0; 4505 switch(direction) { 4506 case View.FOCUS_UP: 4507 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 4508 break; 4509 case View.FOCUS_DOWN: 4510 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 4511 break; 4512 case View.FOCUS_LEFT: 4513 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 4514 break; 4515 case View.FOCUS_RIGHT: 4516 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 4517 break; 4518 default: 4519 return result; 4520 } 4521 if (mNativeClass != 0 && !nativeHasCursorNode()) { 4522 navHandledKey(fakeKeyDirection, 1, true, 0, true); 4523 } 4524 } 4525 } 4526 return result; 4527 } 4528 4529 @Override 4530 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4531 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 4532 4533 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 4534 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 4535 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 4536 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 4537 4538 int measuredHeight = heightSize; 4539 int measuredWidth = widthSize; 4540 4541 // Grab the content size from WebViewCore. 4542 int contentHeight = mContentHeight; 4543 int contentWidth = mContentWidth; 4544 4545// Log.d(LOGTAG, "------- measure " + heightMode); 4546 4547 if (heightMode != MeasureSpec.EXACTLY) { 4548 mHeightCanMeasure = true; 4549 measuredHeight = contentHeight; 4550 if (heightMode == MeasureSpec.AT_MOST) { 4551 // If we are larger than the AT_MOST height, then our height can 4552 // no longer be measured and we should scroll internally. 4553 if (measuredHeight > heightSize) { 4554 measuredHeight = heightSize; 4555 mHeightCanMeasure = false; 4556 } 4557 } 4558 } else { 4559 mHeightCanMeasure = false; 4560 } 4561 if (mNativeClass != 0) { 4562 nativeSetHeightCanMeasure(mHeightCanMeasure); 4563 } 4564 // For the width, always use the given size unless unspecified. 4565 if (widthMode == MeasureSpec.UNSPECIFIED) { 4566 mWidthCanMeasure = true; 4567 measuredWidth = contentWidth; 4568 } else { 4569 mWidthCanMeasure = false; 4570 } 4571 4572 synchronized (this) { 4573 setMeasuredDimension(measuredWidth, measuredHeight); 4574 } 4575 } 4576 4577 @Override 4578 public boolean requestChildRectangleOnScreen(View child, 4579 Rect rect, 4580 boolean immediate) { 4581 rect.offset(child.getLeft() - child.getScrollX(), 4582 child.getTop() - child.getScrollY()); 4583 4584 int height = getHeight() - getHorizontalScrollbarHeight(); 4585 int screenTop = mScrollY; 4586 int screenBottom = screenTop + height; 4587 4588 int scrollYDelta = 0; 4589 4590 if (rect.bottom > screenBottom) { 4591 int oneThirdOfScreenHeight = height / 3; 4592 if (rect.height() > 2 * oneThirdOfScreenHeight) { 4593 // If the rectangle is too tall to fit in the bottom two thirds 4594 // of the screen, place it at the top. 4595 scrollYDelta = rect.top - screenTop; 4596 } else { 4597 // If the rectangle will still fit on screen, we want its 4598 // top to be in the top third of the screen. 4599 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 4600 } 4601 } else if (rect.top < screenTop) { 4602 scrollYDelta = rect.top - screenTop; 4603 } 4604 4605 int width = getWidth() - getVerticalScrollbarWidth(); 4606 int screenLeft = mScrollX; 4607 int screenRight = screenLeft + width; 4608 4609 int scrollXDelta = 0; 4610 4611 if (rect.right > screenRight && rect.left > screenLeft) { 4612 if (rect.width() > width) { 4613 scrollXDelta += (rect.left - screenLeft); 4614 } else { 4615 scrollXDelta += (rect.right - screenRight); 4616 } 4617 } else if (rect.left < screenLeft) { 4618 scrollXDelta -= (screenLeft - rect.left); 4619 } 4620 4621 if ((scrollYDelta | scrollXDelta) != 0) { 4622 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 4623 } 4624 4625 return false; 4626 } 4627 4628 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 4629 String replace, int newStart, int newEnd) { 4630 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 4631 arg.mReplace = replace; 4632 arg.mNewStart = newStart; 4633 arg.mNewEnd = newEnd; 4634 mTextGeneration++; 4635 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 4636 } 4637 4638 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 4639 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 4640 mWebViewCore.sendMessage(EventHub.CLICK); 4641 } 4642 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 4643 arg.mEvent = event; 4644 arg.mCurrentText = currentText; 4645 // Increase our text generation number, and pass it to webcore thread 4646 mTextGeneration++; 4647 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 4648 // WebKit's document state is not saved until about to leave the page. 4649 // To make sure the host application, like Browser, has the up to date 4650 // document state when it goes to background, we force to save the 4651 // document state. 4652 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 4653 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 4654 cursorData(), 1000); 4655 } 4656 4657 /* package */ WebViewCore getWebViewCore() { 4658 return mWebViewCore; 4659 } 4660 4661 //------------------------------------------------------------------------- 4662 // Methods can be called from a separate thread, like WebViewCore 4663 // If it needs to call the View system, it has to send message. 4664 //------------------------------------------------------------------------- 4665 4666 /** 4667 * General handler to receive message coming from webkit thread 4668 */ 4669 class PrivateHandler extends Handler { 4670 @Override 4671 public void handleMessage(Message msg) { 4672 if (DebugFlags.WEB_VIEW) { 4673 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 4674 > INVAL_RECT_MSG_ID ? Integer.toString(msg.what) 4675 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 4676 } 4677 switch (msg.what) { 4678 case REMEMBER_PASSWORD: { 4679 mDatabase.setUsernamePassword( 4680 msg.getData().getString("host"), 4681 msg.getData().getString("username"), 4682 msg.getData().getString("password")); 4683 ((Message) msg.obj).sendToTarget(); 4684 break; 4685 } 4686 case NEVER_REMEMBER_PASSWORD: { 4687 mDatabase.setUsernamePassword( 4688 msg.getData().getString("host"), null, null); 4689 ((Message) msg.obj).sendToTarget(); 4690 break; 4691 } 4692 case SWITCH_TO_SHORTPRESS: { 4693 if (mTouchMode == TOUCH_INIT_MODE) { 4694 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 4695 updateSelection(); 4696 } 4697 break; 4698 } 4699 case SWITCH_TO_LONGPRESS: { 4700 if (!mPreventDrag) { 4701 mTouchMode = TOUCH_DONE_MODE; 4702 performLongClick(); 4703 rebuildWebTextView(); 4704 } 4705 break; 4706 } 4707 case SWITCH_TO_CLICK: 4708 // The user clicked with the trackball, and did not click a 4709 // second time, so perform the action of a trackball single 4710 // click 4711 mTouchMode = TOUCH_DONE_MODE; 4712 Rect visibleRect = sendOurVisibleRect(); 4713 // Note that sendOurVisibleRect calls viewToContent, so the 4714 // coordinates should be in content coordinates. 4715 if (!nativeCursorIntersects(visibleRect)) { 4716 break; 4717 } 4718 nativeSetFollowedLink(true); 4719 nativeUpdatePluginReceivesEvents(); 4720 WebViewCore.CursorData data = cursorData(); 4721 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4722 playSoundEffect(SoundEffectConstants.CLICK); 4723 boolean isTextInput = nativeCursorIsTextInput(); 4724 if (isTextInput || !mCallbackProxy.uiOverrideUrlLoading( 4725 nativeCursorText())) { 4726 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4727 nativeCursorNodePointer()); 4728 } 4729 if (isTextInput) { 4730 rebuildWebTextView(); 4731 } 4732 break; 4733 case SCROLL_BY_MSG_ID: 4734 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 4735 break; 4736 case SYNC_SCROLL_TO_MSG_ID: 4737 if (mUserScroll) { 4738 // if user has scrolled explicitly, don't sync the 4739 // scroll position any more 4740 mUserScroll = false; 4741 break; 4742 } 4743 // fall through 4744 case SCROLL_TO_MSG_ID: 4745 if (setContentScrollTo(msg.arg1, msg.arg2)) { 4746 // if we can't scroll to the exact position due to pin, 4747 // send a message to WebCore to re-scroll when we get a 4748 // new picture 4749 mUserScroll = false; 4750 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 4751 msg.arg1, msg.arg2); 4752 } 4753 break; 4754 case SPAWN_SCROLL_TO_MSG_ID: 4755 spawnContentScrollTo(msg.arg1, msg.arg2); 4756 break; 4757 case NEW_PICTURE_MSG_ID: 4758 // called for new content 4759 final WebViewCore.DrawData draw = 4760 (WebViewCore.DrawData) msg.obj; 4761 final Point viewSize = draw.mViewPoint; 4762 if (mZoomScale > 0) { 4763 // use the same logic in sendViewSizeZoom() to make sure 4764 // the mZoomScale has matched the viewSize so that we 4765 // can clear mZoomScale 4766 if (Math.round(getViewWidth() / mZoomScale) == viewSize.x) { 4767 mZoomScale = 0; 4768 mWebViewCore.sendMessage(EventHub.SET_SNAP_ANCHOR, 4769 0, 0); 4770 } 4771 } 4772 if (!mMinZoomScaleFixed) { 4773 mMinZoomScale = (float) getViewWidth() 4774 / Math.max(ZOOM_OUT_WIDTH, draw.mWidthHeight.x); 4775 } 4776 // We update the layout (i.e. request a layout from the 4777 // view system) if the last view size that we sent to 4778 // WebCore matches the view size of the picture we just 4779 // received in the fixed dimension. 4780 final boolean updateLayout = viewSize.x == mLastWidthSent 4781 && viewSize.y == mLastHeightSent; 4782 recordNewContentSize(draw.mWidthHeight.x, 4783 draw.mWidthHeight.y, updateLayout); 4784 if (DebugFlags.WEB_VIEW) { 4785 Rect b = draw.mInvalRegion.getBounds(); 4786 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 4787 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 4788 } 4789 invalidate(contentToView(draw.mInvalRegion.getBounds())); 4790 if (mPictureListener != null) { 4791 mPictureListener.onNewPicture(WebView.this, capturePicture()); 4792 } 4793 break; 4794 case WEBCORE_INITIALIZED_MSG_ID: 4795 // nativeCreate sets mNativeClass to a non-zero value 4796 nativeCreate(msg.arg1); 4797 break; 4798 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 4799 // Make sure that the textfield is currently focused 4800 // and representing the same node as the pointer. 4801 if (inEditingMode() && 4802 mWebTextView.isSameTextField(msg.arg1)) { 4803 if (msg.getData().getBoolean("password")) { 4804 Spannable text = (Spannable) mWebTextView.getText(); 4805 int start = Selection.getSelectionStart(text); 4806 int end = Selection.getSelectionEnd(text); 4807 mWebTextView.setInPassword(true); 4808 // Restore the selection, which may have been 4809 // ruined by setInPassword. 4810 Spannable pword = 4811 (Spannable) mWebTextView.getText(); 4812 Selection.setSelection(pword, start, end); 4813 // If the text entry has created more events, ignore 4814 // this one. 4815 } else if (msg.arg2 == mTextGeneration) { 4816 mWebTextView.setTextAndKeepSelection( 4817 (String) msg.obj); 4818 } 4819 } 4820 break; 4821 case DID_FIRST_LAYOUT_MSG_ID: 4822 if (mNativeClass == 0) { 4823 break; 4824 } 4825 ScaleLimitData scaleLimit = (ScaleLimitData) msg.obj; 4826 int minScale = scaleLimit.mMinScale; 4827 if (minScale == 0) { 4828 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 4829 mMinZoomScaleFixed = false; 4830 } else { 4831 mMinZoomScale = (float) (minScale / 100.0); 4832 mMinZoomScaleFixed = true; 4833 } 4834 int maxScale = scaleLimit.mMaxScale; 4835 if (maxScale == 0) { 4836 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 4837 } else { 4838 mMaxZoomScale = (float) (maxScale / 100.0); 4839 } 4840 // If history Picture is drawn, don't update zoomWidth 4841 if (mDrawHistory) { 4842 break; 4843 } 4844 int width = getViewWidth(); 4845 if (width == 0) { 4846 break; 4847 } 4848 int initialScale = msg.arg1; 4849 int viewportWidth = msg.arg2; 4850 // start a new page with DEFAULT_SCALE zoom scale. 4851 float scale = mDefaultScale; 4852 if (mInitialScale > 0) { 4853 scale = mInitialScale / 100.0f; 4854 } else { 4855 if (initialScale < 0) break; 4856 if (mWebViewCore.getSettings().getUseWideViewPort()) { 4857 // force viewSizeChanged by setting mLastWidthSent 4858 // to 0 4859 mLastWidthSent = 0; 4860 } 4861 if (initialScale == 0) { 4862 // if viewportWidth is defined and it is smaller 4863 // than the view width, zoom in to fill the view 4864 if (viewportWidth > 0 && viewportWidth < width) { 4865 scale = (float) width / viewportWidth; 4866 } 4867 } else { 4868 scale = initialScale / 100.0f; 4869 } 4870 } 4871 setNewZoomScale(scale, false); 4872 break; 4873 case MOVE_OUT_OF_PLUGIN: 4874 if (nativePluginEatsNavKey()) { 4875 navHandledKey(msg.arg1, 1, false, 0, true); 4876 } 4877 break; 4878 case UPDATE_TEXT_ENTRY_MSG_ID: 4879 // this is sent after finishing resize in WebViewCore. Make 4880 // sure the text edit box is still on the screen. 4881 if (inEditingMode() && nativeCursorIsTextInput()) { 4882 mWebTextView.bringIntoView(); 4883 } 4884 rebuildWebTextView(); 4885 break; 4886 case CLEAR_TEXT_ENTRY: 4887 clearTextEntry(); 4888 break; 4889 case INVAL_RECT_MSG_ID: { 4890 Rect r = (Rect)msg.obj; 4891 if (r == null) { 4892 invalidate(); 4893 } else { 4894 // we need to scale r from content into view coords, 4895 // which viewInvalidate() does for us 4896 viewInvalidate(r.left, r.top, r.right, r.bottom); 4897 } 4898 break; 4899 } 4900 case REQUEST_FORM_DATA: 4901 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 4902 if (mWebTextView.isSameTextField(msg.arg1)) { 4903 mWebTextView.setAdapterCustom(adapter); 4904 } 4905 break; 4906 case UPDATE_CLIPBOARD: 4907 String str = (String) msg.obj; 4908 if (DebugFlags.WEB_VIEW) { 4909 Log.v(LOGTAG, "UPDATE_CLIPBOARD " + str); 4910 } 4911 try { 4912 IClipboard clip = IClipboard.Stub.asInterface( 4913 ServiceManager.getService("clipboard")); 4914 clip.setClipboardText(str); 4915 } catch (android.os.RemoteException e) { 4916 Log.e(LOGTAG, "Clipboard failed", e); 4917 } 4918 break; 4919 case RESUME_WEBCORE_UPDATE: 4920 WebViewCore.resumeUpdate(mWebViewCore); 4921 break; 4922 4923 case LONG_PRESS_CENTER: 4924 // as this is shared by keydown and trackballdown, reset all 4925 // the states 4926 mGotCenterDown = false; 4927 mTrackballDown = false; 4928 // LONG_PRESS_CENTER is sent as a delayed message. If we 4929 // switch to windows overview, the WebView will be 4930 // temporarily removed from the view system. In that case, 4931 // do nothing. 4932 if (getParent() != null) { 4933 performLongClick(); 4934 } 4935 break; 4936 4937 case WEBCORE_NEED_TOUCH_EVENTS: 4938 mForwardTouchEvents = (msg.arg1 != 0); 4939 break; 4940 4941 case PREVENT_TOUCH_ID: 4942 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 4943 mPreventDrag = msg.arg2 == 1; 4944 if (mPreventDrag) { 4945 mTouchMode = TOUCH_DONE_MODE; 4946 } 4947 } 4948 break; 4949 4950 case REQUEST_KEYBOARD: 4951 if (msg.arg1 == 0) { 4952 hideSoftKeyboard(); 4953 } else { 4954 displaySoftKeyboard(false); 4955 } 4956 break; 4957 4958 default: 4959 super.handleMessage(msg); 4960 break; 4961 } 4962 } 4963 } 4964 4965 // Class used to use a dropdown for a <select> element 4966 private class InvokeListBox implements Runnable { 4967 // Whether the listbox allows multiple selection. 4968 private boolean mMultiple; 4969 // Passed in to a list with multiple selection to tell 4970 // which items are selected. 4971 private int[] mSelectedArray; 4972 // Passed in to a list with single selection to tell 4973 // where the initial selection is. 4974 private int mSelection; 4975 4976 private Container[] mContainers; 4977 4978 // Need these to provide stable ids to my ArrayAdapter, 4979 // which normally does not have stable ids. (Bug 1250098) 4980 private class Container extends Object { 4981 String mString; 4982 boolean mEnabled; 4983 int mId; 4984 4985 public String toString() { 4986 return mString; 4987 } 4988 } 4989 4990 /** 4991 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 4992 * and allow filtering. 4993 */ 4994 private class MyArrayListAdapter extends ArrayAdapter<Container> { 4995 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 4996 super(context, 4997 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 4998 com.android.internal.R.layout.select_dialog_singlechoice, 4999 objects); 5000 } 5001 5002 @Override 5003 public boolean hasStableIds() { 5004 // AdapterView's onChanged method uses this to determine whether 5005 // to restore the old state. Return false so that the old (out 5006 // of date) state does not replace the new, valid state. 5007 return false; 5008 } 5009 5010 private Container item(int position) { 5011 if (position < 0 || position >= getCount()) { 5012 return null; 5013 } 5014 return (Container) getItem(position); 5015 } 5016 5017 @Override 5018 public long getItemId(int position) { 5019 Container item = item(position); 5020 if (item == null) { 5021 return -1; 5022 } 5023 return item.mId; 5024 } 5025 5026 @Override 5027 public boolean areAllItemsEnabled() { 5028 return false; 5029 } 5030 5031 @Override 5032 public boolean isEnabled(int position) { 5033 Container item = item(position); 5034 if (item == null) { 5035 return false; 5036 } 5037 return item.mEnabled; 5038 } 5039 } 5040 5041 private InvokeListBox(String[] array, 5042 boolean[] enabled, int[] selected) { 5043 mMultiple = true; 5044 mSelectedArray = selected; 5045 5046 int length = array.length; 5047 mContainers = new Container[length]; 5048 for (int i = 0; i < length; i++) { 5049 mContainers[i] = new Container(); 5050 mContainers[i].mString = array[i]; 5051 mContainers[i].mEnabled = enabled[i]; 5052 mContainers[i].mId = i; 5053 } 5054 } 5055 5056 private InvokeListBox(String[] array, boolean[] enabled, int 5057 selection) { 5058 mSelection = selection; 5059 mMultiple = false; 5060 5061 int length = array.length; 5062 mContainers = new Container[length]; 5063 for (int i = 0; i < length; i++) { 5064 mContainers[i] = new Container(); 5065 mContainers[i].mString = array[i]; 5066 mContainers[i].mEnabled = enabled[i]; 5067 mContainers[i].mId = i; 5068 } 5069 } 5070 5071 /* 5072 * Whenever the data set changes due to filtering, this class ensures 5073 * that the checked item remains checked. 5074 */ 5075 private class SingleDataSetObserver extends DataSetObserver { 5076 private long mCheckedId; 5077 private ListView mListView; 5078 private Adapter mAdapter; 5079 5080 /* 5081 * Create a new observer. 5082 * @param id The ID of the item to keep checked. 5083 * @param l ListView for getting and clearing the checked states 5084 * @param a Adapter for getting the IDs 5085 */ 5086 public SingleDataSetObserver(long id, ListView l, Adapter a) { 5087 mCheckedId = id; 5088 mListView = l; 5089 mAdapter = a; 5090 } 5091 5092 public void onChanged() { 5093 // The filter may have changed which item is checked. Find the 5094 // item that the ListView thinks is checked. 5095 int position = mListView.getCheckedItemPosition(); 5096 long id = mAdapter.getItemId(position); 5097 if (mCheckedId != id) { 5098 // Clear the ListView's idea of the checked item, since 5099 // it is incorrect 5100 mListView.clearChoices(); 5101 // Search for mCheckedId. If it is in the filtered list, 5102 // mark it as checked 5103 int count = mAdapter.getCount(); 5104 for (int i = 0; i < count; i++) { 5105 if (mAdapter.getItemId(i) == mCheckedId) { 5106 mListView.setItemChecked(i, true); 5107 break; 5108 } 5109 } 5110 } 5111 } 5112 5113 public void onInvalidate() {} 5114 } 5115 5116 public void run() { 5117 final ListView listView = (ListView) LayoutInflater.from(mContext) 5118 .inflate(com.android.internal.R.layout.select_dialog, null); 5119 final MyArrayListAdapter adapter = new 5120 MyArrayListAdapter(mContext, mContainers, mMultiple); 5121 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 5122 .setView(listView).setCancelable(true) 5123 .setInverseBackgroundForced(true); 5124 5125 if (mMultiple) { 5126 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 5127 public void onClick(DialogInterface dialog, int which) { 5128 mWebViewCore.sendMessage( 5129 EventHub.LISTBOX_CHOICES, 5130 adapter.getCount(), 0, 5131 listView.getCheckedItemPositions()); 5132 }}); 5133 b.setNegativeButton(android.R.string.cancel, 5134 new DialogInterface.OnClickListener() { 5135 public void onClick(DialogInterface dialog, int which) { 5136 mWebViewCore.sendMessage( 5137 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5138 }}); 5139 } 5140 final AlertDialog dialog = b.create(); 5141 listView.setAdapter(adapter); 5142 listView.setFocusableInTouchMode(true); 5143 // There is a bug (1250103) where the checks in a ListView with 5144 // multiple items selected are associated with the positions, not 5145 // the ids, so the items do not properly retain their checks when 5146 // filtered. Do not allow filtering on multiple lists until 5147 // that bug is fixed. 5148 5149 listView.setTextFilterEnabled(!mMultiple); 5150 if (mMultiple) { 5151 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 5152 int length = mSelectedArray.length; 5153 for (int i = 0; i < length; i++) { 5154 listView.setItemChecked(mSelectedArray[i], true); 5155 } 5156 } else { 5157 listView.setOnItemClickListener(new OnItemClickListener() { 5158 public void onItemClick(AdapterView parent, View v, 5159 int position, long id) { 5160 mWebViewCore.sendMessage( 5161 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 5162 dialog.dismiss(); 5163 } 5164 }); 5165 if (mSelection != -1) { 5166 listView.setSelection(mSelection); 5167 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 5168 listView.setItemChecked(mSelection, true); 5169 DataSetObserver observer = new SingleDataSetObserver( 5170 adapter.getItemId(mSelection), listView, adapter); 5171 adapter.registerDataSetObserver(observer); 5172 } 5173 } 5174 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 5175 public void onCancel(DialogInterface dialog) { 5176 mWebViewCore.sendMessage( 5177 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5178 } 5179 }); 5180 dialog.show(); 5181 } 5182 } 5183 5184 /* 5185 * Request a dropdown menu for a listbox with multiple selection. 5186 * 5187 * @param array Labels for the listbox. 5188 * @param enabledArray Which positions are enabled. 5189 * @param selectedArray Which positions are initally selected. 5190 */ 5191 void requestListBox(String[] array, boolean[]enabledArray, int[] 5192 selectedArray) { 5193 mPrivateHandler.post( 5194 new InvokeListBox(array, enabledArray, selectedArray)); 5195 } 5196 5197 /* 5198 * Request a dropdown menu for a listbox with single selection or a single 5199 * <select> element. 5200 * 5201 * @param array Labels for the listbox. 5202 * @param enabledArray Which positions are enabled. 5203 * @param selection Which position is initally selected. 5204 */ 5205 void requestListBox(String[] array, boolean[]enabledArray, int selection) { 5206 mPrivateHandler.post( 5207 new InvokeListBox(array, enabledArray, selection)); 5208 } 5209 5210 // called by JNI 5211 private void sendMoveMouse(int frame, int node, int x, int y) { 5212 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 5213 new WebViewCore.CursorData(frame, node, x, y)); 5214 } 5215 5216 /* 5217 * Send a mouse move event to the webcore thread. 5218 * 5219 * @param removeFocus Pass true if the "mouse" cursor is now over a node 5220 * which wants key events, but it is not the focus. This 5221 * will make the visual appear as though nothing is in 5222 * focus. Remove the WebTextView, if present, and stop 5223 * drawing the blinking caret. 5224 * called by JNI 5225 */ 5226 private void sendMoveMouseIfLatest(boolean removeFocus) { 5227 if (removeFocus) { 5228 clearTextEntry(); 5229 setFocusControllerInactive(); 5230 } 5231 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 5232 cursorData()); 5233 } 5234 5235 // called by JNI 5236 private void sendMotionUp(int touchGeneration, 5237 int frame, int node, int x, int y, int size) { 5238 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5239 touchUpData.mMoveGeneration = touchGeneration; 5240 touchUpData.mSize = size; 5241 touchUpData.mFrame = frame; 5242 touchUpData.mNode = node; 5243 touchUpData.mX = x; 5244 touchUpData.mY = y; 5245 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5246 } 5247 5248 5249 private int getScaledMaxXScroll() { 5250 int width; 5251 if (mHeightCanMeasure == false) { 5252 width = getViewWidth() / 4; 5253 } else { 5254 Rect visRect = new Rect(); 5255 calcOurVisibleRect(visRect); 5256 width = visRect.width() / 2; 5257 } 5258 // FIXME the divisor should be retrieved from somewhere 5259 return viewToContent(width); 5260 } 5261 5262 private int getScaledMaxYScroll() { 5263 int height; 5264 if (mHeightCanMeasure == false) { 5265 height = getViewHeight() / 4; 5266 } else { 5267 Rect visRect = new Rect(); 5268 calcOurVisibleRect(visRect); 5269 height = visRect.height() / 2; 5270 } 5271 // FIXME the divisor should be retrieved from somewhere 5272 // the closest thing today is hard-coded into ScrollView.java 5273 // (from ScrollView.java, line 363) int maxJump = height/2; 5274 return viewToContent(height); 5275 } 5276 5277 /** 5278 * Called by JNI to invalidate view 5279 */ 5280 private void viewInvalidate() { 5281 invalidate(); 5282 } 5283 5284 // return true if the key was handled 5285 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 5286 long time, boolean ignorePlugin) { 5287 if (mNativeClass == 0) { 5288 return false; 5289 } 5290 if (ignorePlugin == false && nativePluginEatsNavKey()) { 5291 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 5292 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 5293 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 5294 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 5295 , 0, 0, 0); 5296 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5297 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5298 return true; 5299 } 5300 mLastCursorTime = time; 5301 mLastCursorBounds = nativeGetCursorRingBounds(); 5302 boolean keyHandled 5303 = nativeMoveCursor(keyCode, count, noScroll) == false; 5304 if (DebugFlags.WEB_VIEW) { 5305 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 5306 + " mLastCursorTime=" + mLastCursorTime 5307 + " handled=" + keyHandled); 5308 } 5309 if (keyHandled == false || mHeightCanMeasure == false) { 5310 return keyHandled; 5311 } 5312 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 5313 if (contentCursorRingBounds.isEmpty()) return keyHandled; 5314 Rect viewCursorRingBounds = contentToView(contentCursorRingBounds); 5315 Rect visRect = new Rect(); 5316 calcOurVisibleRect(visRect); 5317 Rect outset = new Rect(visRect); 5318 int maxXScroll = visRect.width() / 2; 5319 int maxYScroll = visRect.height() / 2; 5320 outset.inset(-maxXScroll, -maxYScroll); 5321 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 5322 return keyHandled; 5323 } 5324 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 5325 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 5326 maxXScroll); 5327 if (maxH > 0) { 5328 pinScrollBy(maxH, 0, true, 0); 5329 } else { 5330 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 5331 -maxXScroll); 5332 if (maxH < 0) { 5333 pinScrollBy(maxH, 0, true, 0); 5334 } 5335 } 5336 if (mLastCursorBounds.isEmpty()) return keyHandled; 5337 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 5338 return keyHandled; 5339 } 5340 if (DebugFlags.WEB_VIEW) { 5341 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 5342 + contentCursorRingBounds); 5343 } 5344 requestRectangleOnScreen(viewCursorRingBounds); 5345 mUserScroll = true; 5346 return keyHandled; 5347 } 5348 5349 /** 5350 * Set the background color. It's white by default. Pass 5351 * zero to make the view transparent. 5352 * @param color the ARGB color described by Color.java 5353 */ 5354 public void setBackgroundColor(int color) { 5355 mBackgroundColor = color; 5356 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 5357 } 5358 5359 public void debugDump() { 5360 nativeDebugDump(); 5361 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 5362 } 5363 5364 /** 5365 * Update our cache with updatedText. 5366 * @param updatedText The new text to put in our cache. 5367 */ 5368 /* package */ void updateCachedTextfield(String updatedText) { 5369 // Also place our generation number so that when we look at the cache 5370 // we recognize that it is up to date. 5371 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 5372 } 5373 5374 private native void nativeClearCursor(); 5375 private native void nativeCreate(int ptr); 5376 private native int nativeCursorFramePointer(); 5377 private native Rect nativeCursorNodeBounds(); 5378 /* package */ native int nativeCursorNodePointer(); 5379 /* package */ native boolean nativeCursorMatchesFocus(); 5380 private native boolean nativeCursorIntersects(Rect visibleRect); 5381 private native boolean nativeCursorIsAnchor(); 5382 private native boolean nativeCursorIsPlugin(); 5383 private native boolean nativeCursorIsTextInput(); 5384 private native Point nativeCursorPosition(); 5385 private native String nativeCursorText(); 5386 /** 5387 * Returns true if the native cursor node says it wants to handle key events 5388 * (ala plugins). This can only be called if mNativeClass is non-zero! 5389 */ 5390 private native boolean nativeCursorWantsKeyEvents(); 5391 private native void nativeDebugDump(); 5392 private native void nativeDestroy(); 5393 private native void nativeDrawCursorRing(Canvas content); 5394 private native void nativeDrawMatches(Canvas canvas); 5395 private native void nativeDrawSelection(Canvas content 5396 , int x, int y, boolean extendSelection); 5397 private native void nativeDrawSelectionRegion(Canvas content); 5398 private native void nativeDumpDisplayTree(String urlOrNull); 5399 private native int nativeFindAll(String findLower, String findUpper); 5400 private native void nativeFindNext(boolean forward); 5401 private native boolean nativeFocusCandidateIsPassword(); 5402 private native boolean nativeFocusCandidateIsRtlText(); 5403 private native boolean nativeFocusCandidateIsTextField(); 5404 private native boolean nativeFocusCandidateIsTextInput(); 5405 private native int nativeFocusCandidateMaxLength(); 5406 /* package */ native String nativeFocusCandidateName(); 5407 private native Rect nativeFocusCandidateNodeBounds(); 5408 /* package */ native int nativeFocusCandidatePointer(); 5409 private native String nativeFocusCandidateText(); 5410 private native int nativeFocusCandidateTextSize(); 5411 private native Rect nativeGetCursorRingBounds(); 5412 private native Region nativeGetSelection(); 5413 private native boolean nativeHasCursorNode(); 5414 private native boolean nativeHasFocusNode(); 5415 private native void nativeHideCursor(); 5416 private native String nativeImageURI(int x, int y); 5417 private native void nativeInstrumentReport(); 5418 // return true if the page has been scrolled 5419 private native boolean nativeMotionUp(int x, int y, int slop); 5420 // returns false if it handled the key 5421 private native boolean nativeMoveCursor(int keyCode, int count, 5422 boolean noScroll); 5423 private native int nativeMoveGeneration(); 5424 private native void nativeMoveSelection(int x, int y, 5425 boolean extendSelection); 5426 private native boolean nativePluginEatsNavKey(); 5427 // Like many other of our native methods, you must make sure that 5428 // mNativeClass is not null before calling this method. 5429 private native void nativeRecordButtons(boolean focused, 5430 boolean pressed, boolean invalidate); 5431 private native void nativeSelectBestAt(Rect rect); 5432 private native void nativeSetFindIsDown(); 5433 private native void nativeSetFollowedLink(boolean followed); 5434 private native void nativeSetHeightCanMeasure(boolean measure); 5435 private native int nativeTextGeneration(); 5436 // Never call this version except by updateCachedTextfield(String) - 5437 // we always want to pass in our generation number. 5438 private native void nativeUpdateCachedTextfield(String updatedText, 5439 int generation); 5440 private native void nativeUpdatePluginReceivesEvents(); 5441} 5442