WebView.java revision fa03cded353bb42c32662f77e36e90c42e7da9d2
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 333 */ 334 private static final int TOUCH_SENT_INTERVAL = 100; 335 336 /** 337 * Helper class to get velocity for fling 338 */ 339 VelocityTracker mVelocityTracker; 340 341 /** 342 * Touch mode 343 */ 344 private int mTouchMode = TOUCH_DONE_MODE; 345 private static final int TOUCH_INIT_MODE = 1; 346 private static final int TOUCH_DRAG_START_MODE = 2; 347 private static final int TOUCH_DRAG_MODE = 3; 348 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 349 private static final int TOUCH_SHORTPRESS_MODE = 5; 350 private static final int TOUCH_DOUBLECLICK_MODE = 6; 351 private static final int TOUCH_DONE_MODE = 7; 352 private static final int TOUCH_SELECT_MODE = 8; 353 // touch mode values specific to scale+scroll 354 private static final int FIRST_SCROLL_ZOOM = 9; 355 private static final int SCROLL_ZOOM_ANIMATION_IN = 9; 356 private static final int SCROLL_ZOOM_ANIMATION_OUT = 10; 357 private static final int SCROLL_ZOOM_OUT = 11; 358 private static final int LAST_SCROLL_ZOOM = 11; 359 // end of touch mode values specific to scale+scroll 360 361 // Whether to forward the touch events to WebCore 362 private boolean mForwardTouchEvents = false; 363 364 // Whether to prevent drag during touch. The initial value depends on 365 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 366 // take control of touch events unless it says no for touch down event. 367 private boolean mPreventDrag; 368 369 // Whether or not to draw the cursor ring. 370 private boolean mDrawCursorRing = true; 371 372 // true if onPause has been called (and not onResume) 373 private boolean mIsPaused; 374 375 /** 376 * Customizable constant 377 */ 378 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 379 private int mTouchSlopSquare; 380 // pre-computed density adjusted navigation slop 381 private int mNavSlop; 382 // This should be ViewConfiguration.getTapTimeout() 383 // But system time out is 100ms, which is too short for the browser. 384 // In the browser, if it switches out of tap too soon, jump tap won't work. 385 private static final int TAP_TIMEOUT = 200; 386 // This should be ViewConfiguration.getLongPressTimeout() 387 // But system time out is 500ms, which is too short for the browser. 388 // With a short timeout, it's difficult to treat trigger a short press. 389 private static final int LONG_PRESS_TIMEOUT = 1000; 390 // needed to avoid flinging after a pause of no movement 391 private static final int MIN_FLING_TIME = 250; 392 // The time that the Zoom Controls are visible before fading away 393 private static final long ZOOM_CONTROLS_TIMEOUT = 394 ViewConfiguration.getZoomControlsTimeout(); 395 // The amount of content to overlap between two screens when going through 396 // pages with the space bar, in pixels. 397 private static final int PAGE_SCROLL_OVERLAP = 24; 398 399 /** 400 * These prevent calling requestLayout if either dimension is fixed. This 401 * depends on the layout parameters and the measure specs. 402 */ 403 boolean mWidthCanMeasure; 404 boolean mHeightCanMeasure; 405 406 // Remember the last dimensions we sent to the native side so we can avoid 407 // sending the same dimensions more than once. 408 int mLastWidthSent; 409 int mLastHeightSent; 410 411 private int mContentWidth; // cache of value from WebViewCore 412 private int mContentHeight; // cache of value from WebViewCore 413 414 // Need to have the separate control for horizontal and vertical scrollbar 415 // style than the View's single scrollbar style 416 private boolean mOverlayHorizontalScrollbar = true; 417 private boolean mOverlayVerticalScrollbar = false; 418 419 // our standard speed. this way small distances will be traversed in less 420 // time than large distances, but we cap the duration, so that very large 421 // distances won't take too long to get there. 422 private static final int STD_SPEED = 480; // pixels per second 423 // time for the longest scroll animation 424 private static final int MAX_DURATION = 750; // milliseconds 425 private Scroller mScroller; 426 427 private boolean mWrapContent; 428 429 /** 430 * Private message ids 431 */ 432 private static final int REMEMBER_PASSWORD = 1; 433 private static final int NEVER_REMEMBER_PASSWORD = 2; 434 private static final int SWITCH_TO_SHORTPRESS = 3; 435 private static final int SWITCH_TO_LONGPRESS = 4; 436 private static final int REQUEST_FORM_DATA = 6; 437 private static final int SWITCH_TO_CLICK = 7; 438 private static final int RESUME_WEBCORE_UPDATE = 8; 439 440 //! arg1=x, arg2=y 441 static final int SCROLL_TO_MSG_ID = 10; 442 static final int SCROLL_BY_MSG_ID = 11; 443 //! arg1=x, arg2=y 444 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 445 //! arg1=x, arg2=y 446 static final int SYNC_SCROLL_TO_MSG_ID = 13; 447 static final int NEW_PICTURE_MSG_ID = 14; 448 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 449 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 450 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 451 static final int DID_FIRST_LAYOUT_MSG_ID = 18; 452 453 static final int UPDATE_CLIPBOARD = 22; 454 static final int LONG_PRESS_CENTER = 23; 455 static final int PREVENT_TOUCH_ID = 24; 456 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 457 // obj=Rect in doc coordinates 458 static final int INVAL_RECT_MSG_ID = 26; 459 460 static final String[] HandlerDebugString = { 461 "REMEMBER_PASSWORD", // = 1; 462 "NEVER_REMEMBER_PASSWORD", // = 2; 463 "SWITCH_TO_SHORTPRESS", // = 3; 464 "SWITCH_TO_LONGPRESS", // = 4; 465 "5", 466 "REQUEST_FORM_DATA", // = 6; 467 "SWITCH_TO_CLICK", // = 7; 468 "RESUME_WEBCORE_UPDATE", // = 8; 469 "9", 470 "SCROLL_TO_MSG_ID", // = 10; 471 "SCROLL_BY_MSG_ID", // = 11; 472 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 473 "SYNC_SCROLL_TO_MSG_ID", // = 13; 474 "NEW_PICTURE_MSG_ID", // = 14; 475 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 476 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 477 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 478 "DID_FIRST_LAYOUT_MSG_ID", // = 18; 479 "19", 480 "20", 481 "21", // = 21; 482 "UPDATE_CLIPBOARD", // = 22; 483 "LONG_PRESS_CENTER", // = 23; 484 "PREVENT_TOUCH_ID", // = 24; 485 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 486 "INVAL_RECT_MSG_ID" // = 26; 487 }; 488 489 // width which view is considered to be fully zoomed out 490 static final int ZOOM_OUT_WIDTH = 1008; 491 492 private static final float DEFAULT_MAX_ZOOM_SCALE = 4.0f; 493 private static final float DEFAULT_MIN_ZOOM_SCALE = 0.25f; 494 // scale limit, which can be set through viewport meta tag in the web page 495 private float mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 496 private float mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 497 private boolean mMinZoomScaleFixed = false; 498 499 // initial scale in percent. 0 means using default. 500 private int mInitialScale = 0; 501 502 // set to true temporarily while the zoom control is being dragged 503 private boolean mPreviewZoomOnly = false; 504 505 // computed scale and inverse, from mZoomWidth. 506 private float mActualScale = 1; 507 private float mInvActualScale = 1; 508 // if this is non-zero, it is used on drawing rather than mActualScale 509 private float mZoomScale; 510 private float mInvInitialZoomScale; 511 private float mInvFinalZoomScale; 512 private long mZoomStart; 513 private static final int ZOOM_ANIMATION_LENGTH = 500; 514 515 private boolean mUserScroll = false; 516 517 private int mSnapScrollMode = SNAP_NONE; 518 private static final int SNAP_NONE = 1; 519 private static final int SNAP_X = 2; 520 private static final int SNAP_Y = 3; 521 private static final int SNAP_X_LOCK = 4; 522 private static final int SNAP_Y_LOCK = 5; 523 private boolean mSnapPositive; 524 525 // Used to match key downs and key ups 526 private boolean mGotKeyDown; 527 528 /* package */ static boolean mLogEvent = true; 529 private static final int EVENT_LOG_ZOOM_LEVEL_CHANGE = 70101; 530 private static final int EVENT_LOG_DOUBLE_TAP_DURATION = 70102; 531 532 // for event log 533 private long mLastTouchUpTime = 0; 534 535 /** 536 * URI scheme for telephone number 537 */ 538 public static final String SCHEME_TEL = "tel:"; 539 /** 540 * URI scheme for email address 541 */ 542 public static final String SCHEME_MAILTO = "mailto:"; 543 /** 544 * URI scheme for map address 545 */ 546 public static final String SCHEME_GEO = "geo:0,0?q="; 547 548 private int mBackgroundColor = Color.WHITE; 549 550 // Used to notify listeners of a new picture. 551 private PictureListener mPictureListener; 552 /** 553 * Interface to listen for new pictures as they change. 554 */ 555 public interface PictureListener { 556 /** 557 * Notify the listener that the picture has changed. 558 * @param view The WebView that owns the picture. 559 * @param picture The new picture. 560 */ 561 public void onNewPicture(WebView view, Picture picture); 562 } 563 564 // FIXME: Want to make this public, but need to change the API file. 565 public /*static*/ class HitTestResult { 566 /** 567 * Default HitTestResult, where the target is unknown 568 */ 569 public static final int UNKNOWN_TYPE = 0; 570 /** 571 * HitTestResult for hitting a HTML::a tag 572 */ 573 public static final int ANCHOR_TYPE = 1; 574 /** 575 * HitTestResult for hitting a phone number 576 */ 577 public static final int PHONE_TYPE = 2; 578 /** 579 * HitTestResult for hitting a map address 580 */ 581 public static final int GEO_TYPE = 3; 582 /** 583 * HitTestResult for hitting an email address 584 */ 585 public static final int EMAIL_TYPE = 4; 586 /** 587 * HitTestResult for hitting an HTML::img tag 588 */ 589 public static final int IMAGE_TYPE = 5; 590 /** 591 * HitTestResult for hitting a HTML::a tag which contains HTML::img 592 */ 593 public static final int IMAGE_ANCHOR_TYPE = 6; 594 /** 595 * HitTestResult for hitting a HTML::a tag with src=http 596 */ 597 public static final int SRC_ANCHOR_TYPE = 7; 598 /** 599 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 600 */ 601 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 602 /** 603 * HitTestResult for hitting an edit text area 604 */ 605 public static final int EDIT_TEXT_TYPE = 9; 606 607 private int mType; 608 private String mExtra; 609 610 HitTestResult() { 611 mType = UNKNOWN_TYPE; 612 } 613 614 private void setType(int type) { 615 mType = type; 616 } 617 618 private void setExtra(String extra) { 619 mExtra = extra; 620 } 621 622 public int getType() { 623 return mType; 624 } 625 626 public String getExtra() { 627 return mExtra; 628 } 629 } 630 631 // The View containing the zoom controls 632 private ExtendedZoomControls mZoomControls; 633 private Runnable mZoomControlRunnable; 634 635 private ZoomButtonsController mZoomButtonsController; 636 637 // These keep track of the center point of the zoom. They are used to 638 // determine the point around which we should zoom. 639 private float mZoomCenterX; 640 private float mZoomCenterY; 641 642 private ZoomButtonsController.OnZoomListener mZoomListener = 643 new ZoomButtonsController.OnZoomListener() { 644 645 public void onVisibilityChanged(boolean visible) { 646 if (visible) { 647 switchOutDrawHistory(); 648 updateZoomButtonsEnabled(); 649 } 650 } 651 652 public void onZoom(boolean zoomIn) { 653 if (zoomIn) { 654 zoomIn(); 655 } else { 656 zoomOut(); 657 } 658 659 updateZoomButtonsEnabled(); 660 } 661 }; 662 663 /** 664 * Construct a new WebView with a Context object. 665 * @param context A Context object used to access application assets. 666 */ 667 public WebView(Context context) { 668 this(context, null); 669 } 670 671 /** 672 * Construct a new WebView with layout parameters. 673 * @param context A Context object used to access application assets. 674 * @param attrs An AttributeSet passed to our parent. 675 */ 676 public WebView(Context context, AttributeSet attrs) { 677 this(context, attrs, com.android.internal.R.attr.webViewStyle); 678 } 679 680 /** 681 * Construct a new WebView with layout parameters and a default style. 682 * @param context A Context object used to access application assets. 683 * @param attrs An AttributeSet passed to our parent. 684 * @param defStyle The default style resource ID. 685 */ 686 public WebView(Context context, AttributeSet attrs, int defStyle) { 687 super(context, attrs, defStyle); 688 init(); 689 690 mCallbackProxy = new CallbackProxy(context, this); 691 mWebViewCore = new WebViewCore(context, this, mCallbackProxy); 692 mDatabase = WebViewDatabase.getInstance(context); 693 mScroller = new Scroller(context); 694 695 mZoomButtonsController = new ZoomButtonsController(this); 696 mZoomButtonsController.setOnZoomListener(mZoomListener); 697 // ZoomButtonsController positions the buttons at the bottom, but in 698 // the middle. Change their layout parameters so they appear on the 699 // right. 700 View controls = mZoomButtonsController.getZoomControls(); 701 ViewGroup.LayoutParams params = controls.getLayoutParams(); 702 if (params instanceof FrameLayout.LayoutParams) { 703 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 704 params; 705 frameParams.gravity = Gravity.RIGHT; 706 } 707 } 708 709 private void updateZoomButtonsEnabled() { 710 boolean canZoomIn = mActualScale < mMaxZoomScale; 711 boolean canZoomOut = mActualScale > mMinZoomScale; 712 if (!canZoomIn && !canZoomOut) { 713 // Hide the zoom in and out buttons, as well as the fit to page 714 // button, if the page cannot zoom 715 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 716 } else { 717 // Bring back the hidden zoom controls. 718 mZoomButtonsController.getZoomControls() 719 .setVisibility(View.VISIBLE); 720 // Set each one individually, as a page may be able to zoom in 721 // or out. 722 mZoomButtonsController.setZoomInEnabled(canZoomIn); 723 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 724 } 725 } 726 727 private void init() { 728 setWillNotDraw(false); 729 setFocusable(true); 730 setFocusableInTouchMode(true); 731 setClickable(true); 732 setLongClickable(true); 733 734 final int slop = ViewConfiguration.get(getContext()).getScaledTouchSlop(); 735 mTouchSlopSquare = slop * slop; 736 mMinLockSnapReverseDistance = slop; 737 // use one line height, 16 based on our current default font, for how 738 // far we allow a touch be away from the edge of a link 739 mNavSlop = (int) (16 * getContext().getResources() 740 .getDisplayMetrics().density); 741 } 742 743 /* package */ boolean onSavePassword(String schemePlusHost, String username, 744 String password, final Message resumeMsg) { 745 boolean rVal = false; 746 if (resumeMsg == null) { 747 // null resumeMsg implies saving password silently 748 mDatabase.setUsernamePassword(schemePlusHost, username, password); 749 } else { 750 final Message remember = mPrivateHandler.obtainMessage( 751 REMEMBER_PASSWORD); 752 remember.getData().putString("host", schemePlusHost); 753 remember.getData().putString("username", username); 754 remember.getData().putString("password", password); 755 remember.obj = resumeMsg; 756 757 final Message neverRemember = mPrivateHandler.obtainMessage( 758 NEVER_REMEMBER_PASSWORD); 759 neverRemember.getData().putString("host", schemePlusHost); 760 neverRemember.getData().putString("username", username); 761 neverRemember.getData().putString("password", password); 762 neverRemember.obj = resumeMsg; 763 764 new AlertDialog.Builder(getContext()) 765 .setTitle(com.android.internal.R.string.save_password_label) 766 .setMessage(com.android.internal.R.string.save_password_message) 767 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 768 new DialogInterface.OnClickListener() { 769 public void onClick(DialogInterface dialog, int which) { 770 resumeMsg.sendToTarget(); 771 } 772 }) 773 .setNeutralButton(com.android.internal.R.string.save_password_remember, 774 new DialogInterface.OnClickListener() { 775 public void onClick(DialogInterface dialog, int which) { 776 remember.sendToTarget(); 777 } 778 }) 779 .setNegativeButton(com.android.internal.R.string.save_password_never, 780 new DialogInterface.OnClickListener() { 781 public void onClick(DialogInterface dialog, int which) { 782 neverRemember.sendToTarget(); 783 } 784 }) 785 .setOnCancelListener(new OnCancelListener() { 786 public void onCancel(DialogInterface dialog) { 787 resumeMsg.sendToTarget(); 788 } 789 }).show(); 790 // Return true so that WebViewCore will pause while the dialog is 791 // up. 792 rVal = true; 793 } 794 return rVal; 795 } 796 797 @Override 798 public void setScrollBarStyle(int style) { 799 if (style == View.SCROLLBARS_INSIDE_INSET 800 || style == View.SCROLLBARS_OUTSIDE_INSET) { 801 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 802 } else { 803 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 804 } 805 super.setScrollBarStyle(style); 806 } 807 808 /** 809 * Specify whether the horizontal scrollbar has overlay style. 810 * @param overlay TRUE if horizontal scrollbar should have overlay style. 811 */ 812 public void setHorizontalScrollbarOverlay(boolean overlay) { 813 mOverlayHorizontalScrollbar = overlay; 814 } 815 816 /** 817 * Specify whether the vertical scrollbar has overlay style. 818 * @param overlay TRUE if vertical scrollbar should have overlay style. 819 */ 820 public void setVerticalScrollbarOverlay(boolean overlay) { 821 mOverlayVerticalScrollbar = overlay; 822 } 823 824 /** 825 * Return whether horizontal scrollbar has overlay style 826 * @return TRUE if horizontal scrollbar has overlay style. 827 */ 828 public boolean overlayHorizontalScrollbar() { 829 return mOverlayHorizontalScrollbar; 830 } 831 832 /** 833 * Return whether vertical scrollbar has overlay style 834 * @return TRUE if vertical scrollbar has overlay style. 835 */ 836 public boolean overlayVerticalScrollbar() { 837 return mOverlayVerticalScrollbar; 838 } 839 840 /* 841 * Return the width of the view where the content of WebView should render 842 * to. 843 */ 844 private int getViewWidth() { 845 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 846 return getWidth(); 847 } else { 848 return getWidth() - getVerticalScrollbarWidth(); 849 } 850 } 851 852 /* 853 * Return the height of the view where the content of WebView should render 854 * to. 855 */ 856 private int getViewHeight() { 857 if (!isHorizontalScrollBarEnabled() || mOverlayHorizontalScrollbar) { 858 return getHeight(); 859 } else { 860 return getHeight() - getHorizontalScrollbarHeight(); 861 } 862 } 863 864 /** 865 * @return The SSL certificate for the main top-level page or null if 866 * there is no certificate (the site is not secure). 867 */ 868 public SslCertificate getCertificate() { 869 return mCertificate; 870 } 871 872 /** 873 * Sets the SSL certificate for the main top-level page. 874 */ 875 public void setCertificate(SslCertificate certificate) { 876 // here, the certificate can be null (if the site is not secure) 877 mCertificate = certificate; 878 } 879 880 //------------------------------------------------------------------------- 881 // Methods called by activity 882 //------------------------------------------------------------------------- 883 884 /** 885 * Save the username and password for a particular host in the WebView's 886 * internal database. 887 * @param host The host that required the credentials. 888 * @param username The username for the given host. 889 * @param password The password for the given host. 890 */ 891 public void savePassword(String host, String username, String password) { 892 mDatabase.setUsernamePassword(host, username, password); 893 } 894 895 /** 896 * Set the HTTP authentication credentials for a given host and realm. 897 * 898 * @param host The host for the credentials. 899 * @param realm The realm for the credentials. 900 * @param username The username for the password. If it is null, it means 901 * password can't be saved. 902 * @param password The password 903 */ 904 public void setHttpAuthUsernamePassword(String host, String realm, 905 String username, String password) { 906 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 907 } 908 909 /** 910 * Retrieve the HTTP authentication username and password for a given 911 * host & realm pair 912 * 913 * @param host The host for which the credentials apply. 914 * @param realm The realm for which the credentials apply. 915 * @return String[] if found, String[0] is username, which can be null and 916 * String[1] is password. Return null if it can't find anything. 917 */ 918 public String[] getHttpAuthUsernamePassword(String host, String realm) { 919 return mDatabase.getHttpAuthUsernamePassword(host, realm); 920 } 921 922 /** 923 * Destroy the internal state of the WebView. This method should be called 924 * after the WebView has been removed from the view system. No other 925 * methods may be called on a WebView after destroy. 926 */ 927 public void destroy() { 928 clearTextEntry(); 929 if (mWebViewCore != null) { 930 // Set the handlers to null before destroying WebViewCore so no 931 // more messages will be posted. 932 mCallbackProxy.setWebViewClient(null); 933 mCallbackProxy.setWebChromeClient(null); 934 // Tell WebViewCore to destroy itself 935 WebViewCore webViewCore = mWebViewCore; 936 mWebViewCore = null; // prevent using partial webViewCore 937 webViewCore.destroy(); 938 // Remove any pending messages that might not be serviced yet. 939 mPrivateHandler.removeCallbacksAndMessages(null); 940 mCallbackProxy.removeCallbacksAndMessages(null); 941 // Wake up the WebCore thread just in case it is waiting for a 942 // javascript dialog. 943 synchronized (mCallbackProxy) { 944 mCallbackProxy.notify(); 945 } 946 } 947 if (mNativeClass != 0) { 948 nativeDestroy(); 949 mNativeClass = 0; 950 } 951 } 952 953 /** 954 * Enables platform notifications of data state and proxy changes. 955 */ 956 public static void enablePlatformNotifications() { 957 Network.enablePlatformNotifications(); 958 } 959 960 /** 961 * If platform notifications are enabled, this should be called 962 * from the Activity's onPause() or onStop(). 963 */ 964 public static void disablePlatformNotifications() { 965 Network.disablePlatformNotifications(); 966 } 967 968 /** 969 * Inform WebView of the network state. This is used to set 970 * the javascript property window.navigator.isOnline and 971 * generates the online/offline event as specified in HTML5, sec. 5.7.7 972 * @param networkUp boolean indicating if network is available 973 */ 974 public void setNetworkAvailable(boolean networkUp) { 975 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 976 networkUp ? 1 : 0, 0); 977 } 978 979 /** 980 * Save the state of this WebView used in 981 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 982 * method no longer stores the display data for this WebView. The previous 983 * behavior could potentially leak files if {@link #restoreState} was never 984 * called. See {@link #savePicture} and {@link #restorePicture} for saving 985 * and restoring the display data. 986 * @param outState The Bundle to store the WebView state. 987 * @return The same copy of the back/forward list used to save the state. If 988 * saveState fails, the returned list will be null. 989 * @see #savePicture 990 * @see #restorePicture 991 */ 992 public WebBackForwardList saveState(Bundle outState) { 993 if (outState == null) { 994 return null; 995 } 996 // We grab a copy of the back/forward list because a client of WebView 997 // may have invalidated the history list by calling clearHistory. 998 WebBackForwardList list = copyBackForwardList(); 999 final int currentIndex = list.getCurrentIndex(); 1000 final int size = list.getSize(); 1001 // We should fail saving the state if the list is empty or the index is 1002 // not in a valid range. 1003 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1004 return null; 1005 } 1006 outState.putInt("index", currentIndex); 1007 // FIXME: This should just be a byte[][] instead of ArrayList but 1008 // Parcel.java does not have the code to handle multi-dimensional 1009 // arrays. 1010 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1011 for (int i = 0; i < size; i++) { 1012 WebHistoryItem item = list.getItemAtIndex(i); 1013 byte[] data = item.getFlattenedData(); 1014 if (data == null) { 1015 // It would be very odd to not have any data for a given history 1016 // item. And we will fail to rebuild the history list without 1017 // flattened data. 1018 return null; 1019 } 1020 history.add(data); 1021 } 1022 outState.putSerializable("history", history); 1023 if (mCertificate != null) { 1024 outState.putBundle("certificate", 1025 SslCertificate.saveState(mCertificate)); 1026 } 1027 return list; 1028 } 1029 1030 /** 1031 * Save the current display data to the Bundle given. Used in conjunction 1032 * with {@link #saveState}. 1033 * @param b A Bundle to store the display data. 1034 * @param dest The file to store the serialized picture data. Will be 1035 * overwritten with this WebView's picture data. 1036 * @return True if the picture was successfully saved. 1037 */ 1038 public boolean savePicture(Bundle b, File dest) { 1039 if (dest == null || b == null) { 1040 return false; 1041 } 1042 final Picture p = capturePicture(); 1043 try { 1044 final FileOutputStream out = new FileOutputStream(dest); 1045 p.writeToStream(out); 1046 out.close(); 1047 } catch (FileNotFoundException e){ 1048 e.printStackTrace(); 1049 } catch (IOException e) { 1050 e.printStackTrace(); 1051 } catch (RuntimeException e) { 1052 e.printStackTrace(); 1053 } 1054 if (dest.length() > 0) { 1055 b.putInt("scrollX", mScrollX); 1056 b.putInt("scrollY", mScrollY); 1057 b.putFloat("scale", mActualScale); 1058 return true; 1059 } 1060 return false; 1061 } 1062 1063 /** 1064 * Restore the display data that was save in {@link #savePicture}. Used in 1065 * conjunction with {@link #restoreState}. 1066 * @param b A Bundle containing the saved display data. 1067 * @param src The file where the picture data was stored. 1068 * @return True if the picture was successfully restored. 1069 */ 1070 public boolean restorePicture(Bundle b, File src) { 1071 if (src == null || b == null) { 1072 return false; 1073 } 1074 if (src.exists()) { 1075 Picture p = null; 1076 try { 1077 final FileInputStream in = new FileInputStream(src); 1078 p = Picture.createFromStream(in); 1079 in.close(); 1080 } catch (FileNotFoundException e){ 1081 e.printStackTrace(); 1082 } catch (RuntimeException e) { 1083 e.printStackTrace(); 1084 } catch (IOException e) { 1085 e.printStackTrace(); 1086 } 1087 if (p != null) { 1088 int sx = b.getInt("scrollX", 0); 1089 int sy = b.getInt("scrollY", 0); 1090 float scale = b.getFloat("scale", 1.0f); 1091 mDrawHistory = true; 1092 mHistoryPicture = p; 1093 mScrollX = sx; 1094 mScrollY = sy; 1095 mHistoryWidth = Math.round(p.getWidth() * scale); 1096 mHistoryHeight = Math.round(p.getHeight() * scale); 1097 // as getWidth() / getHeight() of the view are not 1098 // available yet, set up mActualScale, so that when 1099 // onSizeChanged() is called, the rest will be set 1100 // correctly 1101 mActualScale = scale; 1102 invalidate(); 1103 return true; 1104 } 1105 } 1106 return false; 1107 } 1108 1109 /** 1110 * Restore the state of this WebView from the given map used in 1111 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1112 * be called to restore the state of the WebView before using the object. If 1113 * it is called after the WebView has had a chance to build state (load 1114 * pages, create a back/forward list, etc.) there may be undesirable 1115 * side-effects. Please note that this method no longer restores the 1116 * display data for this WebView. See {@link #savePicture} and {@link 1117 * #restorePicture} for saving and restoring the display data. 1118 * @param inState The incoming Bundle of state. 1119 * @return The restored back/forward list or null if restoreState failed. 1120 * @see #savePicture 1121 * @see #restorePicture 1122 */ 1123 public WebBackForwardList restoreState(Bundle inState) { 1124 WebBackForwardList returnList = null; 1125 if (inState == null) { 1126 return returnList; 1127 } 1128 if (inState.containsKey("index") && inState.containsKey("history")) { 1129 mCertificate = SslCertificate.restoreState( 1130 inState.getBundle("certificate")); 1131 1132 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1133 final int index = inState.getInt("index"); 1134 // We can't use a clone of the list because we need to modify the 1135 // shared copy, so synchronize instead to prevent concurrent 1136 // modifications. 1137 synchronized (list) { 1138 final List<byte[]> history = 1139 (List<byte[]>) inState.getSerializable("history"); 1140 final int size = history.size(); 1141 // Check the index bounds so we don't crash in native code while 1142 // restoring the history index. 1143 if (index < 0 || index >= size) { 1144 return null; 1145 } 1146 for (int i = 0; i < size; i++) { 1147 byte[] data = history.remove(0); 1148 if (data == null) { 1149 // If we somehow have null data, we cannot reconstruct 1150 // the item and thus our history list cannot be rebuilt. 1151 return null; 1152 } 1153 WebHistoryItem item = new WebHistoryItem(data); 1154 list.addHistoryItem(item); 1155 } 1156 // Grab the most recent copy to return to the caller. 1157 returnList = copyBackForwardList(); 1158 // Update the copy to have the correct index. 1159 returnList.setCurrentIndex(index); 1160 } 1161 // Remove all pending messages because we are restoring previous 1162 // state. 1163 mWebViewCore.removeMessages(); 1164 // Send a restore state message. 1165 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1166 } 1167 return returnList; 1168 } 1169 1170 /** 1171 * Load the given url. 1172 * @param url The url of the resource to load. 1173 */ 1174 public void loadUrl(String url) { 1175 switchOutDrawHistory(); 1176 mWebViewCore.sendMessage(EventHub.LOAD_URL, url); 1177 clearTextEntry(); 1178 } 1179 1180 /** 1181 * Load the url with postData using "POST" method into the WebView. If url 1182 * is not a network url, it will be loaded with {link 1183 * {@link #loadUrl(String)} instead. 1184 * 1185 * @param url The url of the resource to load. 1186 * @param postData The data will be passed to "POST" request. 1187 * 1188 * @hide pending API solidification 1189 */ 1190 public void postUrl(String url, byte[] postData) { 1191 if (URLUtil.isNetworkUrl(url)) { 1192 switchOutDrawHistory(); 1193 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1194 arg.mUrl = url; 1195 arg.mPostData = postData; 1196 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1197 clearTextEntry(); 1198 } else { 1199 loadUrl(url); 1200 } 1201 } 1202 1203 /** 1204 * Load the given data into the WebView. This will load the data into 1205 * WebView using the data: scheme. Content loaded through this mechanism 1206 * does not have the ability to load content from the network. 1207 * @param data A String of data in the given encoding. 1208 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1209 * @param encoding The encoding of the data. i.e. utf-8, base64 1210 */ 1211 public void loadData(String data, String mimeType, String encoding) { 1212 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1213 } 1214 1215 /** 1216 * Load the given data into the WebView, use the provided URL as the base 1217 * URL for the content. The base URL is the URL that represents the page 1218 * that is loaded through this interface. As such, it is used for the 1219 * history entry and to resolve any relative URLs. The failUrl is used if 1220 * browser fails to load the data provided. If it is empty or null, and the 1221 * load fails, then no history entry is created. 1222 * <p> 1223 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1224 * files through "file:///android_asset/" for the sub resources is more 1225 * restricted. If you provide null or empty string as baseUrl, you won't be 1226 * able to access asset files. If the baseUrl is anything other than 1227 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1228 * sub resources. 1229 * 1230 * @param baseUrl Url to resolve relative paths with, if null defaults to 1231 * "about:blank" 1232 * @param data A String of data in the given encoding. 1233 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1234 * defaults to "text/html" 1235 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1236 * @param failUrl URL to use if the content fails to load or null. 1237 */ 1238 public void loadDataWithBaseURL(String baseUrl, String data, 1239 String mimeType, String encoding, String failUrl) { 1240 1241 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1242 loadData(data, mimeType, encoding); 1243 return; 1244 } 1245 switchOutDrawHistory(); 1246 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1247 arg.mBaseUrl = baseUrl; 1248 arg.mData = data; 1249 arg.mMimeType = mimeType; 1250 arg.mEncoding = encoding; 1251 arg.mFailUrl = failUrl; 1252 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1253 clearTextEntry(); 1254 } 1255 1256 /** 1257 * Stop the current load. 1258 */ 1259 public void stopLoading() { 1260 // TODO: should we clear all the messages in the queue before sending 1261 // STOP_LOADING? 1262 switchOutDrawHistory(); 1263 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1264 } 1265 1266 /** 1267 * Reload the current url. 1268 */ 1269 public void reload() { 1270 switchOutDrawHistory(); 1271 mWebViewCore.sendMessage(EventHub.RELOAD); 1272 } 1273 1274 /** 1275 * Return true if this WebView has a back history item. 1276 * @return True iff this WebView has a back history item. 1277 */ 1278 public boolean canGoBack() { 1279 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1280 synchronized (l) { 1281 if (l.getClearPending()) { 1282 return false; 1283 } else { 1284 return l.getCurrentIndex() > 0; 1285 } 1286 } 1287 } 1288 1289 /** 1290 * Go back in the history of this WebView. 1291 */ 1292 public void goBack() { 1293 goBackOrForward(-1); 1294 } 1295 1296 /** 1297 * Return true if this WebView has a forward history item. 1298 * @return True iff this Webview has a forward history item. 1299 */ 1300 public boolean canGoForward() { 1301 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1302 synchronized (l) { 1303 if (l.getClearPending()) { 1304 return false; 1305 } else { 1306 return l.getCurrentIndex() < l.getSize() - 1; 1307 } 1308 } 1309 } 1310 1311 /** 1312 * Go forward in the history of this WebView. 1313 */ 1314 public void goForward() { 1315 goBackOrForward(1); 1316 } 1317 1318 /** 1319 * Return true if the page can go back or forward the given 1320 * number of steps. 1321 * @param steps The negative or positive number of steps to move the 1322 * history. 1323 */ 1324 public boolean canGoBackOrForward(int steps) { 1325 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1326 synchronized (l) { 1327 if (l.getClearPending()) { 1328 return false; 1329 } else { 1330 int newIndex = l.getCurrentIndex() + steps; 1331 return newIndex >= 0 && newIndex < l.getSize(); 1332 } 1333 } 1334 } 1335 1336 /** 1337 * Go to the history item that is the number of steps away from 1338 * the current item. Steps is negative if backward and positive 1339 * if forward. 1340 * @param steps The number of steps to take back or forward in the back 1341 * forward list. 1342 */ 1343 public void goBackOrForward(int steps) { 1344 goBackOrForward(steps, false); 1345 } 1346 1347 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1348 // every time we go back or forward, we want to reset the 1349 // WebView certificate: 1350 // if the new site is secure, we will reload it and get a 1351 // new certificate set; 1352 // if the new site is not secure, the certificate must be 1353 // null, and that will be the case 1354 mCertificate = null; 1355 if (steps != 0) { 1356 clearTextEntry(); 1357 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1358 ignoreSnapshot ? 1 : 0); 1359 } 1360 } 1361 1362 private boolean extendScroll(int y) { 1363 int finalY = mScroller.getFinalY(); 1364 int newY = pinLocY(finalY + y); 1365 if (newY == finalY) return false; 1366 mScroller.setFinalY(newY); 1367 mScroller.extendDuration(computeDuration(0, y)); 1368 return true; 1369 } 1370 1371 /** 1372 * Scroll the contents of the view up by half the view size 1373 * @param top true to jump to the top of the page 1374 * @return true if the page was scrolled 1375 */ 1376 public boolean pageUp(boolean top) { 1377 if (mNativeClass == 0) { 1378 return false; 1379 } 1380 nativeClearCursor(); // start next trackball movement from page edge 1381 if (top) { 1382 // go to the top of the document 1383 return pinScrollTo(mScrollX, 0, true, 0); 1384 } 1385 // Page up 1386 int h = getHeight(); 1387 int y; 1388 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1389 y = -h + PAGE_SCROLL_OVERLAP; 1390 } else { 1391 y = -h / 2; 1392 } 1393 mUserScroll = true; 1394 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1395 : extendScroll(y); 1396 } 1397 1398 /** 1399 * Scroll the contents of the view down by half the page size 1400 * @param bottom true to jump to bottom of page 1401 * @return true if the page was scrolled 1402 */ 1403 public boolean pageDown(boolean bottom) { 1404 if (mNativeClass == 0) { 1405 return false; 1406 } 1407 nativeClearCursor(); // start next trackball movement from page edge 1408 if (bottom) { 1409 return pinScrollTo(mScrollX, mContentHeight, true, 0); 1410 } 1411 // Page down. 1412 int h = getHeight(); 1413 int y; 1414 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1415 y = h - PAGE_SCROLL_OVERLAP; 1416 } else { 1417 y = h / 2; 1418 } 1419 mUserScroll = true; 1420 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1421 : extendScroll(y); 1422 } 1423 1424 /** 1425 * Clear the view so that onDraw() will draw nothing but white background, 1426 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1427 */ 1428 public void clearView() { 1429 mContentWidth = 0; 1430 mContentHeight = 0; 1431 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1432 } 1433 1434 /** 1435 * Return a new picture that captures the current display of the webview. 1436 * This is a copy of the display, and will be unaffected if the webview 1437 * later loads a different URL. 1438 * 1439 * @return a picture containing the current contents of the view. Note this 1440 * picture is of the entire document, and is not restricted to the 1441 * bounds of the view. 1442 */ 1443 public Picture capturePicture() { 1444 if (null == mWebViewCore) return null; // check for out of memory tab 1445 return mWebViewCore.copyContentPicture(); 1446 } 1447 1448 /** 1449 * Return true if the browser is displaying a TextView for text input. 1450 */ 1451 private boolean inEditingMode() { 1452 return mWebTextView != null && mWebTextView.getParent() != null 1453 && mWebTextView.hasFocus(); 1454 } 1455 1456 private void clearTextEntry() { 1457 if (inEditingMode()) { 1458 mWebTextView.remove(); 1459 } 1460 } 1461 1462 /** 1463 * Return the current scale of the WebView 1464 * @return The current scale. 1465 */ 1466 public float getScale() { 1467 return mActualScale; 1468 } 1469 1470 /** 1471 * Set the initial scale for the WebView. 0 means default. If 1472 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1473 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1474 * WebView starts will this value as initial scale. 1475 * 1476 * @param scaleInPercent The initial scale in percent. 1477 */ 1478 public void setInitialScale(int scaleInPercent) { 1479 mInitialScale = scaleInPercent; 1480 } 1481 1482 /** 1483 * Invoke the graphical zoom picker widget for this WebView. This will 1484 * result in the zoom widget appearing on the screen to control the zoom 1485 * level of this WebView. 1486 */ 1487 public void invokeZoomPicker() { 1488 if (!getSettings().supportZoom()) { 1489 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1490 return; 1491 } 1492 clearTextEntry(); 1493 if (getSettings().getBuiltInZoomControls()) { 1494 mZoomButtonsController.setVisible(true); 1495 } else { 1496 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1497 mPrivateHandler.postDelayed(mZoomControlRunnable, 1498 ZOOM_CONTROLS_TIMEOUT); 1499 } 1500 } 1501 1502 /** 1503 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1504 * is found and the anchor has a non-javascript url, the HitTestResult type 1505 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1506 * anchor does not have a url or if it is a javascript url, the type will 1507 * be UNKNOWN_TYPE and the url has to be retrieved through 1508 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1509 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1510 * the "extra" field. A type of 1511 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1512 * a child node. If a phone number is found, the HitTestResult type is set 1513 * to PHONE_TYPE and the phone number is set in the "extra" field of 1514 * HitTestResult. If a map address is found, the HitTestResult type is set 1515 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1516 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1517 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1518 * HitTestResult type is set to UNKNOWN_TYPE. 1519 */ 1520 public HitTestResult getHitTestResult() { 1521 if (mNativeClass == 0) { 1522 return null; 1523 } 1524 1525 HitTestResult result = new HitTestResult(); 1526 if (nativeHasCursorNode()) { 1527 if (nativeCursorIsTextInput()) { 1528 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1529 } else { 1530 String text = nativeCursorText(); 1531 if (text != null) { 1532 if (text.startsWith(SCHEME_TEL)) { 1533 result.setType(HitTestResult.PHONE_TYPE); 1534 result.setExtra(text.substring(SCHEME_TEL.length())); 1535 } else if (text.startsWith(SCHEME_MAILTO)) { 1536 result.setType(HitTestResult.EMAIL_TYPE); 1537 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1538 } else if (text.startsWith(SCHEME_GEO)) { 1539 result.setType(HitTestResult.GEO_TYPE); 1540 result.setExtra(URLDecoder.decode(text 1541 .substring(SCHEME_GEO.length()))); 1542 } else if (nativeCursorIsAnchor()) { 1543 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1544 result.setExtra(text); 1545 } 1546 } 1547 } 1548 } 1549 int type = result.getType(); 1550 if (type == HitTestResult.UNKNOWN_TYPE 1551 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1552 // Now check to see if it is an image. 1553 int contentX = viewToContent((int) mLastTouchX + mScrollX); 1554 int contentY = viewToContent((int) mLastTouchY + mScrollY); 1555 String text = nativeImageURI(contentX, contentY); 1556 if (text != null) { 1557 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1558 HitTestResult.IMAGE_TYPE : 1559 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1560 result.setExtra(text); 1561 } 1562 } 1563 return result; 1564 } 1565 1566 /** 1567 * Request the href of an anchor element due to getFocusNodePath returning 1568 * "href." If hrefMsg is null, this method returns immediately and does not 1569 * dispatch hrefMsg to its target. 1570 * 1571 * @param hrefMsg This message will be dispatched with the result of the 1572 * request as the data member with "url" as key. The result can 1573 * be null. 1574 */ 1575 // FIXME: API change required to change the name of this function. We now 1576 // look at the cursor node, and not the focus node. Also, what is 1577 // getFocusNodePath? 1578 public void requestFocusNodeHref(Message hrefMsg) { 1579 if (hrefMsg == null || mNativeClass == 0) { 1580 return; 1581 } 1582 if (nativeCursorIsAnchor()) { 1583 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1584 nativeCursorFramePointer(), nativeCursorNodePointer(), 1585 hrefMsg); 1586 } 1587 } 1588 1589 /** 1590 * Request the url of the image last touched by the user. msg will be sent 1591 * to its target with a String representing the url as its object. 1592 * 1593 * @param msg This message will be dispatched with the result of the request 1594 * as the data member with "url" as key. The result can be null. 1595 */ 1596 public void requestImageRef(Message msg) { 1597 int contentX = viewToContent((int) mLastTouchX + mScrollX); 1598 int contentY = viewToContent((int) mLastTouchY + mScrollY); 1599 String ref = nativeImageURI(contentX, contentY); 1600 Bundle data = msg.getData(); 1601 data.putString("url", ref); 1602 msg.setData(data); 1603 msg.sendToTarget(); 1604 } 1605 1606 private static int pinLoc(int x, int viewMax, int docMax) { 1607// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1608 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1609 // pin the short document to the top/left of the screen 1610 x = 0; 1611// Log.d(LOGTAG, "--- center " + x); 1612 } else if (x < 0) { 1613 x = 0; 1614// Log.d(LOGTAG, "--- zero"); 1615 } else if (x + viewMax > docMax) { 1616 x = docMax - viewMax; 1617// Log.d(LOGTAG, "--- pin " + x); 1618 } 1619 return x; 1620 } 1621 1622 // Expects x in view coordinates 1623 private int pinLocX(int x) { 1624 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1625 } 1626 1627 // Expects y in view coordinates 1628 private int pinLocY(int y) { 1629 return pinLoc(y, getViewHeight(), computeVerticalScrollRange()); 1630 } 1631 1632 /*package*/ int viewToContent(int x) { 1633 return Math.round(x * mInvActualScale); 1634 } 1635 1636 private int contentToView(int x) { 1637 return Math.round(x * mActualScale); 1638 } 1639 1640 // Called by JNI to invalidate the View, given rectangle coordinates in 1641 // content space 1642 private void viewInvalidate(int l, int t, int r, int b) { 1643 invalidate(contentToView(l), contentToView(t), contentToView(r), 1644 contentToView(b)); 1645 } 1646 1647 // Called by JNI to invalidate the View after a delay, given rectangle 1648 // coordinates in content space 1649 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1650 postInvalidateDelayed(delay, contentToView(l), contentToView(t), 1651 contentToView(r), contentToView(b)); 1652 } 1653 1654 private Rect contentToView(Rect x) { 1655 return new Rect(contentToView(x.left), contentToView(x.top) 1656 , contentToView(x.right), contentToView(x.bottom)); 1657 } 1658 1659 /* call from webcoreview.draw(), so we're still executing in the UI thread 1660 */ 1661 private void recordNewContentSize(int w, int h, boolean updateLayout) { 1662 1663 // premature data from webkit, ignore 1664 if ((w | h) == 0) { 1665 return; 1666 } 1667 1668 // don't abort a scroll animation if we didn't change anything 1669 if (mContentWidth != w || mContentHeight != h) { 1670 // record new dimensions 1671 mContentWidth = w; 1672 mContentHeight = h; 1673 // If history Picture is drawn, don't update scroll. They will be 1674 // updated when we get out of that mode. 1675 if (!mDrawHistory) { 1676 // repin our scroll, taking into account the new content size 1677 int oldX = mScrollX; 1678 int oldY = mScrollY; 1679 mScrollX = pinLocX(mScrollX); 1680 mScrollY = pinLocY(mScrollY); 1681 // android.util.Log.d("skia", "recordNewContentSize - 1682 // abortAnimation"); 1683 mScroller.abortAnimation(); // just in case 1684 if (oldX != mScrollX || oldY != mScrollY) { 1685 sendOurVisibleRect(); 1686 } 1687 } 1688 } 1689 contentSizeChanged(updateLayout); 1690 } 1691 1692 private void setNewZoomScale(float scale, boolean force) { 1693 if (scale < mMinZoomScale) { 1694 scale = mMinZoomScale; 1695 } else if (scale > mMaxZoomScale) { 1696 scale = mMaxZoomScale; 1697 } 1698 if (scale != mActualScale || force) { 1699 if (mDrawHistory) { 1700 // If history Picture is drawn, don't update scroll. They will 1701 // be updated when we get out of that mode. 1702 if (scale != mActualScale && !mPreviewZoomOnly) { 1703 mCallbackProxy.onScaleChanged(mActualScale, scale); 1704 } 1705 mActualScale = scale; 1706 mInvActualScale = 1 / scale; 1707 if (!mPreviewZoomOnly) { 1708 sendViewSizeZoom(); 1709 } 1710 } else { 1711 // update our scroll so we don't appear to jump 1712 // i.e. keep the center of the doc in the center of the view 1713 1714 int oldX = mScrollX; 1715 int oldY = mScrollY; 1716 float ratio = scale * mInvActualScale; // old inverse 1717 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 1718 float sy = ratio * oldY + (ratio - 1) * mZoomCenterY; 1719 1720 // now update our new scale and inverse 1721 if (scale != mActualScale && !mPreviewZoomOnly) { 1722 mCallbackProxy.onScaleChanged(mActualScale, scale); 1723 } 1724 mActualScale = scale; 1725 mInvActualScale = 1 / scale; 1726 1727 // as we don't have animation for scaling, don't do animation 1728 // for scrolling, as it causes weird intermediate state 1729 // pinScrollTo(Math.round(sx), Math.round(sy)); 1730 mScrollX = pinLocX(Math.round(sx)); 1731 mScrollY = pinLocY(Math.round(sy)); 1732 1733 if (!mPreviewZoomOnly) { 1734 sendViewSizeZoom(); 1735 sendOurVisibleRect(); 1736 } 1737 } 1738 } 1739 } 1740 1741 // Used to avoid sending many visible rect messages. 1742 private Rect mLastVisibleRectSent; 1743 private Rect mLastGlobalRect; 1744 1745 private Rect sendOurVisibleRect() { 1746 Rect rect = new Rect(); 1747 calcOurContentVisibleRect(rect); 1748 if (mFindIsUp) { 1749 rect.bottom -= viewToContent(FIND_HEIGHT); 1750 } 1751 // Rect.equals() checks for null input. 1752 if (!rect.equals(mLastVisibleRectSent)) { 1753 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 1754 rect.left, rect.top); 1755 mLastVisibleRectSent = rect; 1756 } 1757 Rect globalRect = new Rect(); 1758 if (getGlobalVisibleRect(globalRect) 1759 && !globalRect.equals(mLastGlobalRect)) { 1760 // TODO: the global offset is only used by windowRect() 1761 // in ChromeClientAndroid ; other clients such as touch 1762 // and mouse events could return view + screen relative points. 1763 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 1764 mLastGlobalRect = globalRect; 1765 } 1766 return rect; 1767 } 1768 1769 // Sets r to be the visible rectangle of our webview in view coordinates 1770 private void calcOurVisibleRect(Rect r) { 1771 Point p = new Point(); 1772 getGlobalVisibleRect(r, p); 1773 r.offset(-p.x, -p.y); 1774 } 1775 1776 // Sets r to be our visible rectangle in content coordinates 1777 private void calcOurContentVisibleRect(Rect r) { 1778 calcOurVisibleRect(r); 1779 r.left = viewToContent(r.left); 1780 r.top = viewToContent(r.top); 1781 r.right = viewToContent(r.right); 1782 r.bottom = viewToContent(r.bottom); 1783 } 1784 1785 /** 1786 * Compute unzoomed width and height, and if they differ from the last 1787 * values we sent, send them to webkit (to be used has new viewport) 1788 * 1789 * @return true if new values were sent 1790 */ 1791 private boolean sendViewSizeZoom() { 1792 int newWidth = Math.round(getViewWidth() * mInvActualScale); 1793 int newHeight = Math.round(getViewHeight() * mInvActualScale); 1794 /* 1795 * Because the native side may have already done a layout before the 1796 * View system was able to measure us, we have to send a height of 0 to 1797 * remove excess whitespace when we grow our width. This will trigger a 1798 * layout and a change in content size. This content size change will 1799 * mean that contentSizeChanged will either call this method directly or 1800 * indirectly from onSizeChanged. 1801 */ 1802 if (newWidth > mLastWidthSent && mWrapContent) { 1803 newHeight = 0; 1804 } 1805 // Avoid sending another message if the dimensions have not changed. 1806 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 1807 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, 1808 newWidth, newHeight, new Float(mActualScale)); 1809 mLastWidthSent = newWidth; 1810 mLastHeightSent = newHeight; 1811 return true; 1812 } 1813 return false; 1814 } 1815 1816 @Override 1817 protected int computeHorizontalScrollRange() { 1818 if (mDrawHistory) { 1819 return mHistoryWidth; 1820 } else { 1821 return contentToView(mContentWidth); 1822 } 1823 } 1824 1825 // Make sure this stays in sync with the actual height of the FindDialog. 1826 private static final int FIND_HEIGHT = 79; 1827 1828 @Override 1829 protected int computeVerticalScrollRange() { 1830 if (mDrawHistory) { 1831 return mHistoryHeight; 1832 } else { 1833 int height = contentToView(mContentHeight); 1834 if (mFindIsUp) { 1835 height += FIND_HEIGHT; 1836 } 1837 return height; 1838 } 1839 } 1840 1841 /** 1842 * Get the url for the current page. This is not always the same as the url 1843 * passed to WebViewClient.onPageStarted because although the load for 1844 * that url has begun, the current page may not have changed. 1845 * @return The url for the current page. 1846 */ 1847 public String getUrl() { 1848 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1849 return h != null ? h.getUrl() : null; 1850 } 1851 1852 /** 1853 * Get the original url for the current page. This is not always the same 1854 * as the url passed to WebViewClient.onPageStarted because although the 1855 * load for that url has begun, the current page may not have changed. 1856 * Also, there may have been redirects resulting in a different url to that 1857 * originally requested. 1858 * @return The url that was originally requested for the current page. 1859 */ 1860 public String getOriginalUrl() { 1861 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1862 return h != null ? h.getOriginalUrl() : null; 1863 } 1864 1865 /** 1866 * Get the title for the current page. This is the title of the current page 1867 * until WebViewClient.onReceivedTitle is called. 1868 * @return The title for the current page. 1869 */ 1870 public String getTitle() { 1871 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1872 return h != null ? h.getTitle() : null; 1873 } 1874 1875 /** 1876 * Get the favicon for the current page. This is the favicon of the current 1877 * page until WebViewClient.onReceivedIcon is called. 1878 * @return The favicon for the current page. 1879 */ 1880 public Bitmap getFavicon() { 1881 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1882 return h != null ? h.getFavicon() : null; 1883 } 1884 1885 /** 1886 * Get the progress for the current page. 1887 * @return The progress for the current page between 0 and 100. 1888 */ 1889 public int getProgress() { 1890 return mCallbackProxy.getProgress(); 1891 } 1892 1893 /** 1894 * @return the height of the HTML content. 1895 */ 1896 public int getContentHeight() { 1897 return mContentHeight; 1898 } 1899 1900 /** 1901 * Pause all layout, parsing, and javascript timers for all webviews. This 1902 * is a global requests, not restricted to just this webview. This can be 1903 * useful if the application has been paused. 1904 */ 1905 public void pauseTimers() { 1906 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 1907 } 1908 1909 /** 1910 * Resume all layout, parsing, and javascript timers for all webviews. 1911 * This will resume dispatching all timers. 1912 */ 1913 public void resumeTimers() { 1914 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 1915 } 1916 1917 /** 1918 * Call this to pause any extra processing associated with this view and 1919 * its associated DOM/plugins/javascript/etc. For example, if the view is 1920 * taken offscreen, this could be called to reduce unnecessary CPU and/or 1921 * network traffic. When the view is again "active", call onResume(). 1922 * 1923 * Note that this differs from pauseTimers(), which affects all views/DOMs 1924 * @hide 1925 */ 1926 public void onPause() { 1927 if (!mIsPaused) { 1928 mIsPaused = true; 1929 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 1930 } 1931 } 1932 1933 /** 1934 * Call this to balanace a previous call to onPause() 1935 * @hide 1936 */ 1937 public void onResume() { 1938 if (mIsPaused) { 1939 mIsPaused = false; 1940 mWebViewCore.sendMessage(EventHub.ON_RESUME); 1941 } 1942 } 1943 1944 /** 1945 * Returns true if the view is paused, meaning onPause() was called. Calling 1946 * onResume() sets the paused state back to false. 1947 * @hide 1948 */ 1949 public boolean isPaused() { 1950 return mIsPaused; 1951 } 1952 1953 /** 1954 * Call this to inform the view that memory is low so that it can 1955 * free any available memory. 1956 * @hide 1957 */ 1958 public void freeMemory() { 1959 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 1960 } 1961 1962 /** 1963 * Clear the resource cache. Note that the cache is per-application, so 1964 * this will clear the cache for all WebViews used. 1965 * 1966 * @param includeDiskFiles If false, only the RAM cache is cleared. 1967 */ 1968 public void clearCache(boolean includeDiskFiles) { 1969 // Note: this really needs to be a static method as it clears cache for all 1970 // WebView. But we need mWebViewCore to send message to WebCore thread, so 1971 // we can't make this static. 1972 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 1973 includeDiskFiles ? 1 : 0, 0); 1974 } 1975 1976 /** 1977 * Make sure that clearing the form data removes the adapter from the 1978 * currently focused textfield if there is one. 1979 */ 1980 public void clearFormData() { 1981 if (inEditingMode()) { 1982 AutoCompleteAdapter adapter = null; 1983 mWebTextView.setAdapterCustom(adapter); 1984 } 1985 } 1986 1987 /** 1988 * Tell the WebView to clear its internal back/forward list. 1989 */ 1990 public void clearHistory() { 1991 mCallbackProxy.getBackForwardList().setClearPending(); 1992 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 1993 } 1994 1995 /** 1996 * Clear the SSL preferences table stored in response to proceeding with SSL 1997 * certificate errors. 1998 */ 1999 public void clearSslPreferences() { 2000 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2001 } 2002 2003 /** 2004 * Return the WebBackForwardList for this WebView. This contains the 2005 * back/forward list for use in querying each item in the history stack. 2006 * This is a copy of the private WebBackForwardList so it contains only a 2007 * snapshot of the current state. Multiple calls to this method may return 2008 * different objects. The object returned from this method will not be 2009 * updated to reflect any new state. 2010 */ 2011 public WebBackForwardList copyBackForwardList() { 2012 return mCallbackProxy.getBackForwardList().clone(); 2013 } 2014 2015 /* 2016 * Highlight and scroll to the next occurance of String in findAll. 2017 * Wraps the page infinitely, and scrolls. Must be called after 2018 * calling findAll. 2019 * 2020 * @param forward Direction to search. 2021 */ 2022 public void findNext(boolean forward) { 2023 nativeFindNext(forward); 2024 } 2025 2026 /* 2027 * Find all instances of find on the page and highlight them. 2028 * @param find String to find. 2029 * @return int The number of occurances of the String "find" 2030 * that were found. 2031 */ 2032 public int findAll(String find) { 2033 mFindIsUp = true; 2034 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2035 invalidate(); 2036 return result; 2037 } 2038 2039 // Used to know whether the find dialog is open. Affects whether 2040 // or not we draw the highlights for matches. 2041 private boolean mFindIsUp; 2042 2043 /** 2044 * Return the first substring consisting of the address of a physical 2045 * location. Currently, only addresses in the United States are detected, 2046 * and consist of: 2047 * - a house number 2048 * - a street name 2049 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2050 * - a city name 2051 * - a state or territory, either spelled out or two-letter abbr. 2052 * - an optional 5 digit or 9 digit zip code. 2053 * 2054 * All names must be correctly capitalized, and the zip code, if present, 2055 * must be valid for the state. The street type must be a standard USPS 2056 * spelling or abbreviation. The state or territory must also be spelled 2057 * or abbreviated using USPS standards. The house number may not exceed 2058 * five digits. 2059 * @param addr The string to search for addresses. 2060 * 2061 * @return the address, or if no address is found, return null. 2062 */ 2063 public static String findAddress(String addr) { 2064 return WebViewCore.nativeFindAddress(addr); 2065 } 2066 2067 /* 2068 * Clear the highlighting surrounding text matches created by findAll. 2069 */ 2070 public void clearMatches() { 2071 mFindIsUp = false; 2072 nativeSetFindIsDown(); 2073 // Now that the dialog has been removed, ensure that we scroll to a 2074 // location that is not beyond the end of the page. 2075 pinScrollTo(mScrollX, mScrollY, false, 0); 2076 invalidate(); 2077 } 2078 2079 /** 2080 * Query the document to see if it contains any image references. The 2081 * message object will be dispatched with arg1 being set to 1 if images 2082 * were found and 0 if the document does not reference any images. 2083 * @param response The message that will be dispatched with the result. 2084 */ 2085 public void documentHasImages(Message response) { 2086 if (response == null) { 2087 return; 2088 } 2089 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2090 } 2091 2092 @Override 2093 public void computeScroll() { 2094 if (mScroller.computeScrollOffset()) { 2095 int oldX = mScrollX; 2096 int oldY = mScrollY; 2097 mScrollX = mScroller.getCurrX(); 2098 mScrollY = mScroller.getCurrY(); 2099 postInvalidate(); // So we draw again 2100 if (oldX != mScrollX || oldY != mScrollY) { 2101 // as onScrollChanged() is not called, sendOurVisibleRect() 2102 // needs to be call explicitly 2103 sendOurVisibleRect(); 2104 } 2105 } else { 2106 super.computeScroll(); 2107 } 2108 } 2109 2110 private static int computeDuration(int dx, int dy) { 2111 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2112 int duration = distance * 1000 / STD_SPEED; 2113 return Math.min(duration, MAX_DURATION); 2114 } 2115 2116 // helper to pin the scrollBy parameters (already in view coordinates) 2117 // returns true if the scroll was changed 2118 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2119 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2120 } 2121 2122 // helper to pin the scrollTo parameters (already in view coordinates) 2123 // returns true if the scroll was changed 2124 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2125 x = pinLocX(x); 2126 y = pinLocY(y); 2127 int dx = x - mScrollX; 2128 int dy = y - mScrollY; 2129 2130 if ((dx | dy) == 0) { 2131 return false; 2132 } 2133 2134 if (true && animate) { 2135 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2136 2137 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2138 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2139 invalidate(); 2140 } else { 2141 mScroller.abortAnimation(); // just in case 2142 scrollTo(x, y); 2143 } 2144 return true; 2145 } 2146 2147 // Scale from content to view coordinates, and pin. 2148 // Also called by jni webview.cpp 2149 private void setContentScrollBy(int cx, int cy, boolean animate) { 2150 if (mDrawHistory) { 2151 // disallow WebView to change the scroll position as History Picture 2152 // is used in the view system. 2153 // TODO: as we switchOutDrawHistory when trackball or navigation 2154 // keys are hit, this should be safe. Right? 2155 return; 2156 } 2157 cx = contentToView(cx); 2158 cy = contentToView(cy); 2159 if (mHeightCanMeasure) { 2160 // move our visible rect according to scroll request 2161 if (cy != 0) { 2162 Rect tempRect = new Rect(); 2163 calcOurVisibleRect(tempRect); 2164 tempRect.offset(cx, cy); 2165 requestRectangleOnScreen(tempRect); 2166 } 2167 // FIXME: We scroll horizontally no matter what because currently 2168 // ScrollView and ListView will not scroll horizontally. 2169 // FIXME: Why do we only scroll horizontally if there is no 2170 // vertical scroll? 2171// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2172 if (cy == 0 && cx != 0) { 2173 pinScrollBy(cx, 0, animate, 0); 2174 } 2175 } else { 2176 pinScrollBy(cx, cy, animate, 0); 2177 } 2178 } 2179 2180 // scale from content to view coordinates, and pin 2181 // return true if pin caused the final x/y different than the request cx/cy; 2182 // return false if the view scroll to the exact position as it is requested. 2183 private boolean setContentScrollTo(int cx, int cy) { 2184 if (mDrawHistory) { 2185 // disallow WebView to change the scroll position as History Picture 2186 // is used in the view system. 2187 // One known case where this is called is that WebCore tries to 2188 // restore the scroll position. As history Picture already uses the 2189 // saved scroll position, it is ok to skip this. 2190 return false; 2191 } 2192 int vx = contentToView(cx); 2193 int vy = contentToView(cy); 2194// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2195// vx + " " + vy + "]"); 2196 pinScrollTo(vx, vy, false, 0); 2197 if (mScrollX != vx || mScrollY != vy) { 2198 return true; 2199 } else { 2200 return false; 2201 } 2202 } 2203 2204 // scale from content to view coordinates, and pin 2205 private void spawnContentScrollTo(int cx, int cy) { 2206 if (mDrawHistory) { 2207 // disallow WebView to change the scroll position as History Picture 2208 // is used in the view system. 2209 return; 2210 } 2211 int vx = contentToView(cx); 2212 int vy = contentToView(cy); 2213 pinScrollTo(vx, vy, true, 0); 2214 } 2215 2216 /** 2217 * These are from webkit, and are in content coordinate system (unzoomed) 2218 */ 2219 private void contentSizeChanged(boolean updateLayout) { 2220 // suppress 0,0 since we usually see real dimensions soon after 2221 // this avoids drawing the prev content in a funny place. If we find a 2222 // way to consolidate these notifications, this check may become 2223 // obsolete 2224 if ((mContentWidth | mContentHeight) == 0) { 2225 return; 2226 } 2227 2228 if (mHeightCanMeasure) { 2229 if (getMeasuredHeight() != contentToView(mContentHeight) 2230 && updateLayout) { 2231 requestLayout(); 2232 } 2233 } else if (mWidthCanMeasure) { 2234 if (getMeasuredWidth() != contentToView(mContentWidth) 2235 && updateLayout) { 2236 requestLayout(); 2237 } 2238 } else { 2239 // If we don't request a layout, try to send our view size to the 2240 // native side to ensure that WebCore has the correct dimensions. 2241 sendViewSizeZoom(); 2242 } 2243 } 2244 2245 /** 2246 * Set the WebViewClient that will receive various notifications and 2247 * requests. This will replace the current handler. 2248 * @param client An implementation of WebViewClient. 2249 */ 2250 public void setWebViewClient(WebViewClient client) { 2251 mCallbackProxy.setWebViewClient(client); 2252 } 2253 2254 /** 2255 * Register the interface to be used when content can not be handled by 2256 * the rendering engine, and should be downloaded instead. This will replace 2257 * the current handler. 2258 * @param listener An implementation of DownloadListener. 2259 */ 2260 public void setDownloadListener(DownloadListener listener) { 2261 mCallbackProxy.setDownloadListener(listener); 2262 } 2263 2264 /** 2265 * Set the chrome handler. This is an implementation of WebChromeClient for 2266 * use in handling Javascript dialogs, favicons, titles, and the progress. 2267 * This will replace the current handler. 2268 * @param client An implementation of WebChromeClient. 2269 */ 2270 public void setWebChromeClient(WebChromeClient client) { 2271 mCallbackProxy.setWebChromeClient(client); 2272 } 2273 2274 /** 2275 * Set the Picture listener. This is an interface used to receive 2276 * notifications of a new Picture. 2277 * @param listener An implementation of WebView.PictureListener. 2278 */ 2279 public void setPictureListener(PictureListener listener) { 2280 mPictureListener = listener; 2281 } 2282 2283 /** 2284 * {@hide} 2285 */ 2286 /* FIXME: Debug only! Remove for SDK! */ 2287 public void externalRepresentation(Message callback) { 2288 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2289 } 2290 2291 /** 2292 * {@hide} 2293 */ 2294 /* FIXME: Debug only! Remove for SDK! */ 2295 public void documentAsText(Message callback) { 2296 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2297 } 2298 2299 /** 2300 * Use this function to bind an object to Javascript so that the 2301 * methods can be accessed from Javascript. 2302 * <p><strong>IMPORTANT:</strong> 2303 * <ul> 2304 * <li> Using addJavascriptInterface() allows JavaScript to control your 2305 * application. This can be a very useful feature or a dangerous security 2306 * issue. When the HTML in the WebView is untrustworthy (for example, part 2307 * or all of the HTML is provided by some person or process), then an 2308 * attacker could inject HTML that will execute your code and possibly any 2309 * code of the attacker's choosing.<br> 2310 * Do not use addJavascriptInterface() unless all of the HTML in this 2311 * WebView was written by you.</li> 2312 * <li> The Java object that is bound runs in another thread and not in 2313 * the thread that it was constructed in.</li> 2314 * </ul></p> 2315 * @param obj The class instance to bind to Javascript 2316 * @param interfaceName The name to used to expose the class in Javascript 2317 */ 2318 public void addJavascriptInterface(Object obj, String interfaceName) { 2319 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2320 arg.mObject = obj; 2321 arg.mInterfaceName = interfaceName; 2322 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2323 } 2324 2325 /** 2326 * Return the WebSettings object used to control the settings for this 2327 * WebView. 2328 * @return A WebSettings object that can be used to control this WebView's 2329 * settings. 2330 */ 2331 public WebSettings getSettings() { 2332 return mWebViewCore.getSettings(); 2333 } 2334 2335 /** 2336 * Return the list of currently loaded plugins. 2337 * @return The list of currently loaded plugins. 2338 */ 2339 public static synchronized PluginList getPluginList() { 2340 if (sPluginList == null) { 2341 sPluginList = new PluginList(); 2342 } 2343 return sPluginList; 2344 } 2345 2346 /** 2347 * TODO: need to add @Deprecated 2348 */ 2349 public void refreshPlugins(boolean reloadOpenPages) { 2350 PluginManager.getInstance(mContext).refreshPlugins(reloadOpenPages); 2351 } 2352 2353 //------------------------------------------------------------------------- 2354 // Override View methods 2355 //------------------------------------------------------------------------- 2356 2357 @Override 2358 protected void finalize() throws Throwable { 2359 destroy(); 2360 } 2361 2362 @Override 2363 protected void onDraw(Canvas canvas) { 2364 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2365 if (mNativeClass == 0) { 2366 return; 2367 } 2368 if (mWebViewCore.mEndScaleZoom) { 2369 mWebViewCore.mEndScaleZoom = false; 2370 if (mTouchMode >= FIRST_SCROLL_ZOOM 2371 && mTouchMode <= LAST_SCROLL_ZOOM) { 2372 setHorizontalScrollBarEnabled(true); 2373 setVerticalScrollBarEnabled(true); 2374 mTouchMode = TOUCH_DONE_MODE; 2375 } 2376 } 2377 int sc = canvas.save(); 2378 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 2379 scrollZoomDraw(canvas); 2380 } else { 2381 // Update the buttons in the picture, so when we draw the picture 2382 // to the screen, they are in the correct state. 2383 // Tell the native side if user is a) touching the screen, 2384 // b) pressing the trackball down, or c) pressing the enter key 2385 // If the cursor is on a button, we need to draw it in the pressed 2386 // state. 2387 // If mNativeClass is 0, we should not reach here, so we do not 2388 // need to check it again. 2389 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2390 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2391 || mTrackballDown || mGotCenterDown, false); 2392 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2393 } 2394 canvas.restoreToCount(sc); 2395 2396 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2397 invalidate(); 2398 } 2399 } 2400 2401 @Override 2402 public void setLayoutParams(ViewGroup.LayoutParams params) { 2403 if (params.height == LayoutParams.WRAP_CONTENT) { 2404 mWrapContent = true; 2405 } 2406 super.setLayoutParams(params); 2407 } 2408 2409 @Override 2410 public boolean performLongClick() { 2411 if (inEditingMode()) { 2412 return mWebTextView.performLongClick(); 2413 } else { 2414 return super.performLongClick(); 2415 } 2416 } 2417 2418 private void drawCoreAndCursorRing(Canvas canvas, int color, 2419 boolean drawCursorRing) { 2420 if (mDrawHistory) { 2421 canvas.scale(mActualScale, mActualScale); 2422 canvas.drawPicture(mHistoryPicture); 2423 return; 2424 } 2425 2426 boolean animateZoom = mZoomScale != 0; 2427 boolean animateScroll = !mScroller.isFinished() 2428 || mVelocityTracker != null; 2429 if (animateZoom) { 2430 float zoomScale; 2431 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 2432 if (interval < ZOOM_ANIMATION_LENGTH) { 2433 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 2434 zoomScale = 1.0f / (mInvInitialZoomScale 2435 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 2436 invalidate(); 2437 } else { 2438 zoomScale = mZoomScale; 2439 // set mZoomScale to be 0 as we have done animation 2440 mZoomScale = 0; 2441 } 2442 float scale = (mActualScale - zoomScale) * mInvActualScale; 2443 float tx = scale * (mZoomCenterX + mScrollX); 2444 float ty = scale * (mZoomCenterY + mScrollY); 2445 2446 // this block pins the translate to "legal" bounds. This makes the 2447 // animation a bit non-obvious, but it means we won't pop when the 2448 // "real" zoom takes effect 2449 if (true) { 2450 // canvas.translate(mScrollX, mScrollY); 2451 tx -= mScrollX; 2452 ty -= mScrollY; 2453 tx = -pinLoc(-Math.round(tx), getViewWidth(), Math 2454 .round(mContentWidth * zoomScale)); 2455 ty = -pinLoc(-Math.round(ty), getViewHeight(), Math 2456 .round(mContentHeight * zoomScale)); 2457 tx += mScrollX; 2458 ty += mScrollY; 2459 } 2460 canvas.translate(tx, ty); 2461 canvas.scale(zoomScale, zoomScale); 2462 } else { 2463 canvas.scale(mActualScale, mActualScale); 2464 } 2465 2466 mWebViewCore.drawContentPicture(canvas, color, animateZoom, 2467 animateScroll); 2468 2469 if (mNativeClass == 0) return; 2470 if (mShiftIsPressed) { 2471 if (mTouchSelection) { 2472 nativeDrawSelectionRegion(canvas); 2473 } else { 2474 nativeDrawSelection(canvas, mSelectX, mSelectY, 2475 mExtendSelection); 2476 } 2477 } else if (drawCursorRing) { 2478 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 2479 mTouchMode = TOUCH_SHORTPRESS_MODE; 2480 HitTestResult hitTest = getHitTestResult(); 2481 if (hitTest != null && 2482 hitTest.mType != HitTestResult.UNKNOWN_TYPE) { 2483 mPrivateHandler.sendMessageDelayed(mPrivateHandler 2484 .obtainMessage(SWITCH_TO_LONGPRESS), 2485 LONG_PRESS_TIMEOUT); 2486 } 2487 } 2488 nativeDrawCursorRing(canvas); 2489 } 2490 // When the FindDialog is up, only draw the matches if we are not in 2491 // the process of scrolling them into view. 2492 if (mFindIsUp && !animateScroll) { 2493 nativeDrawMatches(canvas); 2494 } 2495 } 2496 2497 private float scrollZoomGridScale(float invScale) { 2498 float griddedInvScale = (int) (invScale * SCROLL_ZOOM_GRID) 2499 / (float) SCROLL_ZOOM_GRID; 2500 return 1.0f / griddedInvScale; 2501 } 2502 2503 private float scrollZoomX(float scale) { 2504 int width = getViewWidth(); 2505 float maxScrollZoomX = mContentWidth * scale - width; 2506 int maxX = mContentWidth - width; 2507 return -(maxScrollZoomX > 0 ? mZoomScrollX * maxScrollZoomX / maxX 2508 : maxScrollZoomX / 2); 2509 } 2510 2511 private float scrollZoomY(float scale) { 2512 int height = getViewHeight(); 2513 float maxScrollZoomY = mContentHeight * scale - height; 2514 int maxY = mContentHeight - height; 2515 return -(maxScrollZoomY > 0 ? mZoomScrollY * maxScrollZoomY / maxY 2516 : maxScrollZoomY / 2); 2517 } 2518 2519 private void drawMagnifyFrame(Canvas canvas, Rect frame, Paint paint) { 2520 final float ADORNMENT_LEN = 16.0f; 2521 float width = frame.width(); 2522 float height = frame.height(); 2523 Path path = new Path(); 2524 path.moveTo(-ADORNMENT_LEN, -ADORNMENT_LEN); 2525 path.lineTo(0, 0); 2526 path.lineTo(width, 0); 2527 path.lineTo(width + ADORNMENT_LEN, -ADORNMENT_LEN); 2528 path.moveTo(-ADORNMENT_LEN, height + ADORNMENT_LEN); 2529 path.lineTo(0, height); 2530 path.lineTo(width, height); 2531 path.lineTo(width + ADORNMENT_LEN, height + ADORNMENT_LEN); 2532 path.moveTo(0, 0); 2533 path.lineTo(0, height); 2534 path.moveTo(width, 0); 2535 path.lineTo(width, height); 2536 path.offset(frame.left, frame.top); 2537 canvas.drawPath(path, paint); 2538 } 2539 2540 // Returns frame surrounding magified portion of screen while 2541 // scroll-zoom is enabled. The frame is also used to center the 2542 // zoom-in zoom-out points at the start and end of the animation. 2543 private Rect scrollZoomFrame(int width, int height, float halfScale) { 2544 Rect scrollFrame = new Rect(); 2545 scrollFrame.set(mZoomScrollX, mZoomScrollY, 2546 mZoomScrollX + width, mZoomScrollY + height); 2547 if (mContentWidth * mZoomScrollLimit < width) { 2548 float scale = zoomFrameScaleX(width, halfScale, 1.0f); 2549 float offsetX = (width * scale - width) * 0.5f; 2550 scrollFrame.left -= offsetX; 2551 scrollFrame.right += offsetX; 2552 } 2553 if (mContentHeight * mZoomScrollLimit < height) { 2554 float scale = zoomFrameScaleY(height, halfScale, 1.0f); 2555 float offsetY = (height * scale - height) * 0.5f; 2556 scrollFrame.top -= offsetY; 2557 scrollFrame.bottom += offsetY; 2558 } 2559 return scrollFrame; 2560 } 2561 2562 private float zoomFrameScaleX(int width, float halfScale, float noScale) { 2563 // mContentWidth > width > mContentWidth * mZoomScrollLimit 2564 if (mContentWidth <= width) { 2565 return halfScale; 2566 } 2567 float part = (width - mContentWidth * mZoomScrollLimit) 2568 / (width * (1 - mZoomScrollLimit)); 2569 return halfScale * part + noScale * (1.0f - part); 2570 } 2571 2572 private float zoomFrameScaleY(int height, float halfScale, float noScale) { 2573 if (mContentHeight <= height) { 2574 return halfScale; 2575 } 2576 float part = (height - mContentHeight * mZoomScrollLimit) 2577 / (height * (1 - mZoomScrollLimit)); 2578 return halfScale * part + noScale * (1.0f - part); 2579 } 2580 2581 private float scrollZoomMagScale(float invScale) { 2582 return (invScale * 2 + mInvActualScale) / 3; 2583 } 2584 2585 private void scrollZoomDraw(Canvas canvas) { 2586 float invScale = mZoomScrollInvLimit; 2587 int elapsed = 0; 2588 if (mTouchMode != SCROLL_ZOOM_OUT) { 2589 elapsed = (int) Math.min(System.currentTimeMillis() 2590 - mZoomScrollStart, SCROLL_ZOOM_DURATION); 2591 float transitionScale = (mZoomScrollInvLimit - mInvActualScale) 2592 * elapsed / SCROLL_ZOOM_DURATION; 2593 if (mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 2594 invScale = mInvActualScale + transitionScale; 2595 } else { /* if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) */ 2596 invScale = mZoomScrollInvLimit - transitionScale; 2597 } 2598 } 2599 float scale = scrollZoomGridScale(invScale); 2600 invScale = 1.0f / scale; 2601 int width = getViewWidth(); 2602 int height = getViewHeight(); 2603 float halfScale = scrollZoomMagScale(invScale); 2604 Rect scrollFrame = scrollZoomFrame(width, height, halfScale); 2605 if (elapsed == SCROLL_ZOOM_DURATION) { 2606 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 2607 setHorizontalScrollBarEnabled(true); 2608 setVerticalScrollBarEnabled(true); 2609 rebuildWebTextView(); 2610 scrollTo((int) (scrollFrame.centerX() * mActualScale) 2611 - (width >> 1), (int) (scrollFrame.centerY() 2612 * mActualScale) - (height >> 1)); 2613 mTouchMode = TOUCH_DONE_MODE; 2614 } else { 2615 mTouchMode = SCROLL_ZOOM_OUT; 2616 } 2617 } 2618 float newX = scrollZoomX(scale); 2619 float newY = scrollZoomY(scale); 2620 if (DebugFlags.WEB_VIEW) { 2621 Log.v(LOGTAG, "scrollZoomDraw scale=" + scale + " + (" + newX 2622 + ", " + newY + ") mZoomScroll=(" + mZoomScrollX + ", " 2623 + mZoomScrollY + ")" + " invScale=" + invScale + " scale=" 2624 + scale); 2625 } 2626 canvas.translate(newX, newY); 2627 canvas.scale(scale, scale); 2628 boolean animating = mTouchMode != SCROLL_ZOOM_OUT; 2629 if (mDrawHistory) { 2630 int sc = canvas.save(Canvas.CLIP_SAVE_FLAG); 2631 Rect clip = new Rect(0, 0, mHistoryPicture.getWidth(), 2632 mHistoryPicture.getHeight()); 2633 canvas.clipRect(clip, Region.Op.DIFFERENCE); 2634 canvas.drawColor(mBackgroundColor); 2635 canvas.restoreToCount(sc); 2636 canvas.drawPicture(mHistoryPicture); 2637 } else { 2638 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2639 animating, true); 2640 } 2641 if (mTouchMode == TOUCH_DONE_MODE) { 2642 return; 2643 } 2644 Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); 2645 paint.setStyle(Paint.Style.STROKE); 2646 paint.setStrokeWidth(30.0f); 2647 paint.setARGB(0x50, 0, 0, 0); 2648 int maxX = mContentWidth - width; 2649 int maxY = mContentHeight - height; 2650 if (true) { // experiment: draw hint to place finger off magnify area 2651 drawMagnifyFrame(canvas, scrollFrame, paint); 2652 } else { 2653 canvas.drawRect(scrollFrame, paint); 2654 } 2655 int sc = canvas.save(); 2656 canvas.clipRect(scrollFrame); 2657 float halfX = (float) mZoomScrollX / maxX; 2658 if (mContentWidth * mZoomScrollLimit < width) { 2659 halfX = zoomFrameScaleX(width, 0.5f, halfX); 2660 } 2661 float halfY = (float) mZoomScrollY / maxY; 2662 if (mContentHeight * mZoomScrollLimit < height) { 2663 halfY = zoomFrameScaleY(height, 0.5f, halfY); 2664 } 2665 canvas.scale(halfScale, halfScale, mZoomScrollX + width * halfX 2666 , mZoomScrollY + height * halfY); 2667 if (DebugFlags.WEB_VIEW) { 2668 Log.v(LOGTAG, "scrollZoomDraw halfScale=" + halfScale + " w/h=(" 2669 + width + ", " + height + ") half=(" + halfX + ", " 2670 + halfY + ")"); 2671 } 2672 if (mDrawHistory) { 2673 canvas.drawPicture(mHistoryPicture); 2674 } else { 2675 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2676 animating, false); 2677 } 2678 canvas.restoreToCount(sc); 2679 if (mTouchMode != SCROLL_ZOOM_OUT) { 2680 invalidate(); 2681 } 2682 } 2683 2684 private void zoomScrollTap(float x, float y) { 2685 float scale = scrollZoomGridScale(mZoomScrollInvLimit); 2686 float left = scrollZoomX(scale); 2687 float top = scrollZoomY(scale); 2688 int width = getViewWidth(); 2689 int height = getViewHeight(); 2690 x -= width * scale / 2; 2691 y -= height * scale / 2; 2692 mZoomScrollX = Math.min(mContentWidth - width 2693 , Math.max(0, (int) ((x - left) / scale))); 2694 mZoomScrollY = Math.min(mContentHeight - height 2695 , Math.max(0, (int) ((y - top) / scale))); 2696 if (DebugFlags.WEB_VIEW) { 2697 Log.v(LOGTAG, "zoomScrollTap scale=" + scale + " + (" + left 2698 + ", " + top + ") mZoomScroll=(" + mZoomScrollX + ", " 2699 + mZoomScrollY + ")" + " x=" + x + " y=" + y); 2700 } 2701 } 2702 2703 /** 2704 * @hide 2705 */ 2706 public boolean canZoomScrollOut() { 2707 if (mContentWidth == 0 || mContentHeight == 0) { 2708 return false; 2709 } 2710 int width = getViewWidth(); 2711 int height = getViewHeight(); 2712 float x = (float) width / (float) mContentWidth; 2713 float y = (float) height / (float) mContentHeight; 2714 mZoomScrollLimit = Math.max(DEFAULT_MIN_ZOOM_SCALE, Math.min(x, y)); 2715 mZoomScrollInvLimit = 1.0f / mZoomScrollLimit; 2716 if (DebugFlags.WEB_VIEW) { 2717 Log.v(LOGTAG, "canZoomScrollOut" 2718 + " mInvActualScale=" + mInvActualScale 2719 + " mZoomScrollLimit=" + mZoomScrollLimit 2720 + " mZoomScrollInvLimit=" + mZoomScrollInvLimit 2721 + " mContentWidth=" + mContentWidth 2722 + " mContentHeight=" + mContentHeight 2723 ); 2724 } 2725 // don't zoom out unless magnify area is at least half as wide 2726 // or tall as content 2727 float limit = mZoomScrollLimit * 2; 2728 return mContentWidth >= width * limit 2729 || mContentHeight >= height * limit; 2730 } 2731 2732 private void startZoomScrollOut() { 2733 setHorizontalScrollBarEnabled(false); 2734 setVerticalScrollBarEnabled(false); 2735 if (getSettings().getBuiltInZoomControls()) { 2736 if (mZoomButtonsController.isVisible()) { 2737 mZoomButtonsController.setVisible(false); 2738 } 2739 } else { 2740 if (mZoomControlRunnable != null) { 2741 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 2742 } 2743 if (mZoomControls != null) { 2744 mZoomControls.hide(); 2745 } 2746 } 2747 int width = getViewWidth(); 2748 int height = getViewHeight(); 2749 int halfW = width >> 1; 2750 mLastTouchX = halfW; 2751 int halfH = height >> 1; 2752 mLastTouchY = halfH; 2753 mScroller.abortAnimation(); 2754 mZoomScrollStart = System.currentTimeMillis(); 2755 Rect zoomFrame = scrollZoomFrame(width, height 2756 , scrollZoomMagScale(mZoomScrollInvLimit)); 2757 mZoomScrollX = Math.max(0, (int) ((mScrollX + halfW) * mInvActualScale) 2758 - (zoomFrame.width() >> 1)); 2759 mZoomScrollY = Math.max(0, (int) ((mScrollY + halfH) * mInvActualScale) 2760 - (zoomFrame.height() >> 1)); 2761 scrollTo(0, 0); // triggers inval, starts animation 2762 clearTextEntry(); 2763 if (DebugFlags.WEB_VIEW) { 2764 Log.v(LOGTAG, "startZoomScrollOut mZoomScroll=(" 2765 + mZoomScrollX + ", " + mZoomScrollY +")"); 2766 } 2767 } 2768 2769 /** 2770 * @hide 2771 */ 2772 public void zoomScrollOut() { 2773 if (canZoomScrollOut() == false) { 2774 mTouchMode = TOUCH_DONE_MODE; 2775 return; 2776 } 2777 startZoomScrollOut(); 2778 mTouchMode = SCROLL_ZOOM_ANIMATION_OUT; 2779 invalidate(); 2780 } 2781 2782 private void moveZoomScrollWindow(float x, float y) { 2783 if (Math.abs(x - mLastZoomScrollRawX) < 1.5f 2784 && Math.abs(y - mLastZoomScrollRawY) < 1.5f) { 2785 return; 2786 } 2787 mLastZoomScrollRawX = x; 2788 mLastZoomScrollRawY = y; 2789 int oldX = mZoomScrollX; 2790 int oldY = mZoomScrollY; 2791 int width = getViewWidth(); 2792 int height = getViewHeight(); 2793 int maxZoomX = mContentWidth - width; 2794 if (maxZoomX > 0) { 2795 int maxScreenX = width - (int) Math.ceil(width 2796 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 2797 if (DebugFlags.WEB_VIEW) { 2798 Log.v(LOGTAG, "moveZoomScrollWindow-X" 2799 + " maxScreenX=" + maxScreenX + " width=" + width 2800 + " mZoomScrollLimit=" + mZoomScrollLimit + " x=" + x); 2801 } 2802 x += maxScreenX * mLastScrollX / maxZoomX - mLastTouchX; 2803 x *= Math.max(maxZoomX / maxScreenX, mZoomScrollInvLimit); 2804 mZoomScrollX = Math.max(0, Math.min(maxZoomX, (int) x)); 2805 } 2806 int maxZoomY = mContentHeight - height; 2807 if (maxZoomY > 0) { 2808 int maxScreenY = height - (int) Math.ceil(height 2809 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 2810 if (DebugFlags.WEB_VIEW) { 2811 Log.v(LOGTAG, "moveZoomScrollWindow-Y" 2812 + " maxScreenY=" + maxScreenY + " height=" + height 2813 + " mZoomScrollLimit=" + mZoomScrollLimit + " y=" + y); 2814 } 2815 y += maxScreenY * mLastScrollY / maxZoomY - mLastTouchY; 2816 y *= Math.max(maxZoomY / maxScreenY, mZoomScrollInvLimit); 2817 mZoomScrollY = Math.max(0, Math.min(maxZoomY, (int) y)); 2818 } 2819 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 2820 invalidate(); 2821 } 2822 if (DebugFlags.WEB_VIEW) { 2823 Log.v(LOGTAG, "moveZoomScrollWindow" 2824 + " scrollTo=(" + mZoomScrollX + ", " + mZoomScrollY + ")" 2825 + " mLastTouch=(" + mLastTouchX + ", " + mLastTouchY + ")" 2826 + " maxZoom=(" + maxZoomX + ", " + maxZoomY + ")" 2827 + " last=("+mLastScrollX+", "+mLastScrollY+")" 2828 + " x=" + x + " y=" + y); 2829 } 2830 } 2831 2832 private void setZoomScrollIn() { 2833 mZoomScrollStart = System.currentTimeMillis(); 2834 } 2835 2836 private float mZoomScrollLimit; 2837 private float mZoomScrollInvLimit; 2838 private int mLastScrollX; 2839 private int mLastScrollY; 2840 private long mZoomScrollStart; 2841 private int mZoomScrollX; 2842 private int mZoomScrollY; 2843 private float mLastZoomScrollRawX = -1000.0f; 2844 private float mLastZoomScrollRawY = -1000.0f; 2845 // The zoomed scale varies from 1.0 to DEFAULT_MIN_ZOOM_SCALE == 0.25. 2846 // The zoom animation duration SCROLL_ZOOM_DURATION == 0.5. 2847 // Two pressures compete for gridding; a high frame rate (e.g. 20 fps) 2848 // and minimizing font cache allocations (fewer frames is better). 2849 // A SCROLL_ZOOM_GRID of 6 permits about 20 zoom levels over 0.5 seconds: 2850 // the inverse of: 1.0, 1.16, 1.33, 1.5, 1.67, 1.84, 2.0, etc. to 4.0 2851 private static final int SCROLL_ZOOM_GRID = 6; 2852 private static final int SCROLL_ZOOM_DURATION = 500; 2853 // Make it easier to get to the bottom of a document by reserving a 32 2854 // pixel buffer, for when the starting drag is a bit below the bottom of 2855 // the magnify frame. 2856 private static final int SCROLL_ZOOM_FINGER_BUFFER = 32; 2857 2858 // draw history 2859 private boolean mDrawHistory = false; 2860 private Picture mHistoryPicture = null; 2861 private int mHistoryWidth = 0; 2862 private int mHistoryHeight = 0; 2863 2864 // Only check the flag, can be called from WebCore thread 2865 boolean drawHistory() { 2866 return mDrawHistory; 2867 } 2868 2869 // Should only be called in UI thread 2870 void switchOutDrawHistory() { 2871 if (null == mWebViewCore) return; // CallbackProxy may trigger this 2872 if (mDrawHistory && mWebViewCore.pictureReady()) { 2873 mDrawHistory = false; 2874 invalidate(); 2875 int oldScrollX = mScrollX; 2876 int oldScrollY = mScrollY; 2877 mScrollX = pinLocX(mScrollX); 2878 mScrollY = pinLocY(mScrollY); 2879 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 2880 mUserScroll = false; 2881 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 2882 oldScrollY); 2883 } 2884 sendOurVisibleRect(); 2885 } 2886 } 2887 2888 WebViewCore.CursorData cursorData() { 2889 WebViewCore.CursorData result = new WebViewCore.CursorData(); 2890 result.mMoveGeneration = nativeMoveGeneration(); 2891 result.mFrame = nativeCursorFramePointer(); 2892 result.mNode = nativeCursorNodePointer(); 2893 Rect bounds = nativeCursorNodeBounds(); 2894 result.mX = bounds.centerX(); 2895 result.mY = bounds.centerY(); 2896 return result; 2897 } 2898 2899 /** 2900 * Delete text from start to end in the focused textfield. If there is no 2901 * focus, or if start == end, silently fail. If start and end are out of 2902 * order, swap them. 2903 * @param start Beginning of selection to delete. 2904 * @param end End of selection to delete. 2905 */ 2906 /* package */ void deleteSelection(int start, int end) { 2907 mTextGeneration++; 2908 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, start, end); 2909 } 2910 2911 /** 2912 * Set the selection to (start, end) in the focused textfield. If start and 2913 * end are out of order, swap them. 2914 * @param start Beginning of selection. 2915 * @param end End of selection. 2916 */ 2917 /* package */ void setSelection(int start, int end) { 2918 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 2919 } 2920 2921 // Called by JNI when a touch event puts a textfield into focus. 2922 private void displaySoftKeyboard() { 2923 InputMethodManager imm = (InputMethodManager) 2924 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 2925 imm.showSoftInput(mWebTextView, 0); 2926 mWebTextView.enableScrollOnScreen(true); 2927 // Now we need to fake a touch event to place the cursor where the 2928 // user touched. 2929 AbsoluteLayout.LayoutParams lp = (AbsoluteLayout.LayoutParams) 2930 mWebTextView.getLayoutParams(); 2931 if (lp != null) { 2932 // Take the last touch and adjust for the location of the 2933 // WebTextView. 2934 float x = mLastTouchX + (float) (mScrollX - lp.x); 2935 float y = mLastTouchY + (float) (mScrollY - lp.y); 2936 mWebTextView.fakeTouchEvent(x, y); 2937 } 2938 } 2939 2940 /* 2941 * This method checks the current focus and cursor and potentially rebuilds 2942 * mWebTextView to have the appropriate properties, such as password, 2943 * multiline, and what text it contains. It also removes it if necessary. 2944 */ 2945 private void rebuildWebTextView() { 2946 // If the WebView does not have focus, do nothing until it gains focus. 2947 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus()) 2948 || (mTouchMode >= FIRST_SCROLL_ZOOM 2949 && mTouchMode <= LAST_SCROLL_ZOOM)) { 2950 return; 2951 } 2952 boolean alreadyThere = inEditingMode(); 2953 // inEditingMode can only return true if mWebTextView is non-null, 2954 // so we can safely call remove() if (alreadyThere) 2955 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 2956 if (alreadyThere) { 2957 mWebTextView.remove(); 2958 } 2959 return; 2960 } 2961 // At this point, we know we have found an input field, so go ahead 2962 // and create the WebTextView if necessary. 2963 if (mWebTextView == null) { 2964 mWebTextView = new WebTextView(mContext, WebView.this); 2965 // Initialize our generation number. 2966 mTextGeneration = 0; 2967 } 2968 mWebTextView.setTextSize(contentToView(nativeFocusCandidateTextSize())); 2969 Rect visibleRect = sendOurVisibleRect(); 2970 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 2971 // should be in content coordinates. 2972 Rect bounds = nativeFocusCandidateNodeBounds(); 2973 if (!Rect.intersects(bounds, visibleRect)) { 2974 // Node is not on screen, so do not bother. 2975 return; 2976 } 2977 String text = nativeFocusCandidateText(); 2978 int nodePointer = nativeFocusCandidatePointer(); 2979 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 2980 // It is possible that we have the same textfield, but it has moved, 2981 // i.e. In the case of opening/closing the screen. 2982 // In that case, we need to set the dimensions, but not the other 2983 // aspects. 2984 // We also need to restore the selection, which gets wrecked by 2985 // calling setTextEntryRect. 2986 Spannable spannable = (Spannable) mWebTextView.getText(); 2987 int start = Selection.getSelectionStart(spannable); 2988 int end = Selection.getSelectionEnd(spannable); 2989 // If the text has been changed by webkit, update it. However, if 2990 // there has been more UI text input, ignore it. We will receive 2991 // another update when that text is recognized. 2992 if (text != null && !text.equals(spannable.toString()) 2993 && nativeTextGeneration() == mTextGeneration) { 2994 mWebTextView.setTextAndKeepSelection(text); 2995 } else { 2996 Selection.setSelection(spannable, start, end); 2997 } 2998 } else { 2999 Rect vBox = contentToView(bounds); 3000 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3001 vBox.height()); 3002 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3003 Gravity.RIGHT : Gravity.NO_GRAVITY); 3004 // this needs to be called before update adapter thread starts to 3005 // ensure the mWebTextView has the same node pointer 3006 mWebTextView.setNodePointer(nodePointer); 3007 int maxLength = -1; 3008 boolean isTextField = nativeFocusCandidateIsTextField(); 3009 if (isTextField) { 3010 maxLength = nativeFocusCandidateMaxLength(); 3011 String name = nativeFocusCandidateName(); 3012 if (mWebViewCore.getSettings().getSaveFormData() 3013 && name != null) { 3014 Message update = mPrivateHandler.obtainMessage( 3015 REQUEST_FORM_DATA, nodePointer); 3016 RequestFormData updater = new RequestFormData(name, 3017 getUrl(), update); 3018 Thread t = new Thread(updater); 3019 t.start(); 3020 } 3021 } 3022 mWebTextView.setMaxLength(maxLength); 3023 AutoCompleteAdapter adapter = null; 3024 mWebTextView.setAdapterCustom(adapter); 3025 mWebTextView.setSingleLine(isTextField); 3026 mWebTextView.setInPassword(nativeFocusCandidateIsPassword()); 3027 if (null == text) { 3028 mWebTextView.setText("", 0, 0); 3029 } else { 3030 // Change to true to enable the old style behavior, where 3031 // entering a textfield/textarea always set the selection to the 3032 // whole field. This was desirable for the case where the user 3033 // intends to scroll past the field using the trackball. 3034 // However, it causes a problem when replying to emails - the 3035 // user expects the cursor to be at the beginning of the 3036 // textarea. Testing out a new behavior, where textfields set 3037 // selection at the end, and textareas at the beginning. 3038 if (false) { 3039 mWebTextView.setText(text, 0, text.length()); 3040 } else if (isTextField) { 3041 int length = text.length(); 3042 mWebTextView.setText(text, length, length); 3043 } else { 3044 mWebTextView.setText(text, 0, 0); 3045 } 3046 } 3047 mWebTextView.requestFocus(); 3048 } 3049 } 3050 3051 /* 3052 * This class requests an Adapter for the WebTextView which shows past 3053 * entries stored in the database. It is a Runnable so that it can be done 3054 * in its own thread, without slowing down the UI. 3055 */ 3056 private class RequestFormData implements Runnable { 3057 private String mName; 3058 private String mUrl; 3059 private Message mUpdateMessage; 3060 3061 public RequestFormData(String name, String url, Message msg) { 3062 mName = name; 3063 mUrl = url; 3064 mUpdateMessage = msg; 3065 } 3066 3067 public void run() { 3068 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3069 if (pastEntries.size() > 0) { 3070 AutoCompleteAdapter adapter = new 3071 AutoCompleteAdapter(mContext, pastEntries); 3072 mUpdateMessage.obj = adapter; 3073 mUpdateMessage.sendToTarget(); 3074 } 3075 } 3076 } 3077 3078 // This is used to determine long press with the center key. Does not 3079 // affect long press with the trackball/touch. 3080 private boolean mGotCenterDown = false; 3081 3082 @Override 3083 public boolean onKeyDown(int keyCode, KeyEvent event) { 3084 if (DebugFlags.WEB_VIEW) { 3085 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3086 + ", " + event); 3087 } 3088 3089 if (mNativeClass == 0) { 3090 return false; 3091 } 3092 3093 // do this hack up front, so it always works, regardless of touch-mode 3094 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3095 mAutoRedraw = !mAutoRedraw; 3096 if (mAutoRedraw) { 3097 invalidate(); 3098 } 3099 return true; 3100 } 3101 3102 // Bubble up the key event if 3103 // 1. it is a system key; or 3104 // 2. the host application wants to handle it; or 3105 // 3. webview is in scroll-zoom state; 3106 if (event.isSystem() 3107 || mCallbackProxy.uiOverrideKeyEvent(event) 3108 || (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM)) { 3109 return false; 3110 } 3111 3112 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3113 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3114 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3115 mExtendSelection = false; 3116 mShiftIsPressed = true; 3117 if (nativeHasCursorNode()) { 3118 Rect rect = nativeCursorNodeBounds(); 3119 mSelectX = contentToView(rect.left); 3120 mSelectY = contentToView(rect.top); 3121 } else { 3122 mSelectX = mScrollX + (int) mLastTouchX; 3123 mSelectY = mScrollY + (int) mLastTouchY; 3124 } 3125 nativeHideCursor(); 3126 } 3127 3128 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3129 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3130 // always handle the navigation keys in the UI thread 3131 switchOutDrawHistory(); 3132 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 3133 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3134 return true; 3135 } 3136 // Bubble up the key event as WebView doesn't handle it 3137 return false; 3138 } 3139 3140 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3141 switchOutDrawHistory(); 3142 if (event.getRepeatCount() == 0) { 3143 mGotCenterDown = true; 3144 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3145 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3146 // Already checked mNativeClass, so we do not need to check it 3147 // again. 3148 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3149 return true; 3150 } 3151 // Bubble up the key event as WebView doesn't handle it 3152 return false; 3153 } 3154 3155 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3156 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3157 // turn off copy select if a shift-key combo is pressed 3158 mExtendSelection = mShiftIsPressed = false; 3159 if (mTouchMode == TOUCH_SELECT_MODE) { 3160 mTouchMode = TOUCH_INIT_MODE; 3161 } 3162 } 3163 3164 if (getSettings().getNavDump()) { 3165 switch (keyCode) { 3166 case KeyEvent.KEYCODE_4: 3167 // "/data/data/com.android.browser/displayTree.txt" 3168 nativeDumpDisplayTree(getUrl()); 3169 break; 3170 case KeyEvent.KEYCODE_5: 3171 case KeyEvent.KEYCODE_6: 3172 // 5: dump the dom tree to the file 3173 // "/data/data/com.android.browser/domTree.txt" 3174 // 6: dump the dom tree to the adb log 3175 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, 3176 (keyCode == KeyEvent.KEYCODE_5) ? 1 : 0, 0); 3177 break; 3178 case KeyEvent.KEYCODE_7: 3179 case KeyEvent.KEYCODE_8: 3180 // 7: dump the render tree to the file 3181 // "/data/data/com.android.browser/renderTree.txt" 3182 // 8: dump the render tree to the adb log 3183 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, 3184 (keyCode == KeyEvent.KEYCODE_7) ? 1 : 0, 0); 3185 break; 3186 case KeyEvent.KEYCODE_9: 3187 nativeInstrumentReport(); 3188 return true; 3189 } 3190 } 3191 3192 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 3193 mWebViewCore.sendMessage(EventHub.CLICK); 3194 } 3195 3196 // TODO: should we pass all the keys to DOM or check the meta tag 3197 if (nativeCursorWantsKeyEvents() || true) { 3198 // pass the key to DOM 3199 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3200 // return true as DOM handles the key 3201 return true; 3202 } 3203 3204 // Bubble up the key event as WebView doesn't handle it 3205 return false; 3206 } 3207 3208 @Override 3209 public boolean onKeyUp(int keyCode, KeyEvent event) { 3210 if (DebugFlags.WEB_VIEW) { 3211 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3212 + ", " + event); 3213 } 3214 3215 if (mNativeClass == 0) { 3216 return false; 3217 } 3218 3219 // special CALL handling when cursor node's href is "tel:XXX" 3220 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3221 String text = nativeCursorText(); 3222 if (!nativeCursorIsTextInput() && text != null 3223 && text.startsWith(SCHEME_TEL)) { 3224 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3225 getContext().startActivity(intent); 3226 return true; 3227 } 3228 } 3229 3230 // Bubble up the key event if 3231 // 1. it is a system key; or 3232 // 2. the host application wants to handle it; 3233 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3234 return false; 3235 } 3236 3237 // special handling in scroll_zoom state 3238 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 3239 if (KeyEvent.KEYCODE_DPAD_CENTER == keyCode 3240 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN) { 3241 setZoomScrollIn(); 3242 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 3243 invalidate(); 3244 return true; 3245 } 3246 return false; 3247 } 3248 3249 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3250 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3251 if (commitCopy()) { 3252 return true; 3253 } 3254 } 3255 3256 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3257 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3258 // always handle the navigation keys in the UI thread 3259 // Bubble up the key event as WebView doesn't handle it 3260 return false; 3261 } 3262 3263 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3264 // remove the long press message first 3265 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3266 mGotCenterDown = false; 3267 3268 if (mShiftIsPressed) { 3269 return false; 3270 } 3271 if (getSettings().supportZoom() 3272 && mTouchMode == TOUCH_DOUBLECLICK_MODE) { 3273 zoomScrollOut(); 3274 } else { 3275 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3276 .obtainMessage(SWITCH_TO_CLICK), TAP_TIMEOUT); 3277 if (DebugFlags.WEB_VIEW) { 3278 Log.v(LOGTAG, "TOUCH_DOUBLECLICK_MODE"); 3279 } 3280 mTouchMode = TOUCH_DOUBLECLICK_MODE; 3281 } 3282 return true; 3283 } 3284 3285 // TODO: should we pass all the keys to DOM or check the meta tag 3286 if (nativeCursorWantsKeyEvents() || true) { 3287 // pass the key to DOM 3288 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3289 // return true as DOM handles the key 3290 return true; 3291 } 3292 3293 // Bubble up the key event as WebView doesn't handle it 3294 return false; 3295 } 3296 3297 /** 3298 * @hide 3299 */ 3300 public void emulateShiftHeld() { 3301 mExtendSelection = false; 3302 mShiftIsPressed = true; 3303 nativeHideCursor(); 3304 } 3305 3306 private boolean commitCopy() { 3307 boolean copiedSomething = false; 3308 if (mExtendSelection) { 3309 // copy region so core operates on copy without touching orig. 3310 Region selection = new Region(nativeGetSelection()); 3311 if (selection.isEmpty() == false) { 3312 Toast.makeText(mContext 3313 , com.android.internal.R.string.text_copied 3314 , Toast.LENGTH_SHORT).show(); 3315 mWebViewCore.sendMessage(EventHub.GET_SELECTION, selection); 3316 copiedSomething = true; 3317 } 3318 mExtendSelection = false; 3319 } 3320 mShiftIsPressed = false; 3321 if (mTouchMode == TOUCH_SELECT_MODE) { 3322 mTouchMode = TOUCH_INIT_MODE; 3323 } 3324 return copiedSomething; 3325 } 3326 3327 // Set this as a hierarchy change listener so we can know when this view 3328 // is removed and still have access to our parent. 3329 @Override 3330 protected void onAttachedToWindow() { 3331 super.onAttachedToWindow(); 3332 ViewParent parent = getParent(); 3333 if (parent instanceof ViewGroup) { 3334 ViewGroup p = (ViewGroup) parent; 3335 p.setOnHierarchyChangeListener(this); 3336 } 3337 } 3338 3339 @Override 3340 protected void onDetachedFromWindow() { 3341 super.onDetachedFromWindow(); 3342 ViewParent parent = getParent(); 3343 if (parent instanceof ViewGroup) { 3344 ViewGroup p = (ViewGroup) parent; 3345 p.setOnHierarchyChangeListener(null); 3346 } 3347 3348 // Clean up the zoom controller 3349 mZoomButtonsController.setVisible(false); 3350 } 3351 3352 // Implementation for OnHierarchyChangeListener 3353 public void onChildViewAdded(View parent, View child) {} 3354 3355 public void onChildViewRemoved(View p, View child) { 3356 if (child == this) { 3357 if (inEditingMode()) { 3358 clearTextEntry(); 3359 } 3360 } 3361 } 3362 3363 /** 3364 * @deprecated WebView should not have implemented 3365 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3366 * does nothing now. 3367 */ 3368 @Deprecated 3369 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3370 } 3371 3372 // To avoid drawing the cursor ring, and remove the TextView when our window 3373 // loses focus. 3374 @Override 3375 public void onWindowFocusChanged(boolean hasWindowFocus) { 3376 if (hasWindowFocus) { 3377 if (hasFocus()) { 3378 // If our window regained focus, and we have focus, then begin 3379 // drawing the cursor ring 3380 mDrawCursorRing = true; 3381 if (mNativeClass != 0) { 3382 nativeRecordButtons(true, false, true); 3383 } 3384 } else { 3385 // If our window gained focus, but we do not have it, do not 3386 // draw the cursor ring. 3387 mDrawCursorRing = false; 3388 // We do not call nativeRecordButtons here because we assume 3389 // that when we lost focus, or window focus, it got called with 3390 // false for the first parameter 3391 } 3392 } else { 3393 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3394 /* 3395 * The zoom controls come in their own window, so our window 3396 * loses focus. Our policy is to not draw the cursor ring if 3397 * our window is not focused, but this is an exception since 3398 * the user can still navigate the web page with the zoom 3399 * controls showing. 3400 */ 3401 // If our window has lost focus, stop drawing the cursor ring 3402 mDrawCursorRing = false; 3403 } 3404 mGotKeyDown = false; 3405 mShiftIsPressed = false; 3406 if (mNativeClass != 0) { 3407 nativeRecordButtons(false, false, true); 3408 } 3409 setFocusControllerInactive(); 3410 } 3411 invalidate(); 3412 super.onWindowFocusChanged(hasWindowFocus); 3413 } 3414 3415 /* 3416 * Pass a message to WebCore Thread, telling the WebCore::Page's 3417 * FocusController to be "inactive" so that it will 3418 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3419 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3420 */ 3421 private void setFocusControllerInactive() { 3422 // Do not need to also check whether mWebViewCore is null, because 3423 // mNativeClass is only set if mWebViewCore is non null 3424 if (mNativeClass == 0) return; 3425 mWebViewCore.sendMessage(EventHub.SET_INACTIVE); 3426 } 3427 3428 @Override 3429 protected void onFocusChanged(boolean focused, int direction, 3430 Rect previouslyFocusedRect) { 3431 if (DebugFlags.WEB_VIEW) { 3432 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3433 } 3434 if (focused) { 3435 // When we regain focus, if we have window focus, resume drawing 3436 // the cursor ring 3437 if (hasWindowFocus()) { 3438 mDrawCursorRing = true; 3439 if (mNativeClass != 0) { 3440 nativeRecordButtons(true, false, true); 3441 } 3442 //} else { 3443 // The WebView has gained focus while we do not have 3444 // windowfocus. When our window lost focus, we should have 3445 // called nativeRecordButtons(false...) 3446 } 3447 } else { 3448 // When we lost focus, unless focus went to the TextView (which is 3449 // true if we are in editing mode), stop drawing the cursor ring. 3450 if (!inEditingMode()) { 3451 mDrawCursorRing = false; 3452 if (mNativeClass != 0) { 3453 nativeRecordButtons(false, false, true); 3454 } 3455 setFocusControllerInactive(); 3456 } 3457 mGotKeyDown = false; 3458 } 3459 3460 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3461 } 3462 3463 @Override 3464 protected void onSizeChanged(int w, int h, int ow, int oh) { 3465 super.onSizeChanged(w, h, ow, oh); 3466 // Center zooming to the center of the screen. 3467 mZoomCenterX = getViewWidth() * .5f; 3468 mZoomCenterY = getViewHeight() * .5f; 3469 3470 // update mMinZoomScale if the minimum zoom scale is not fixed 3471 if (!mMinZoomScaleFixed) { 3472 mMinZoomScale = (float) getViewWidth() 3473 / Math.max(ZOOM_OUT_WIDTH, mContentWidth); 3474 } 3475 3476 // we always force, in case our height changed, in which case we still 3477 // want to send the notification over to webkit 3478 setNewZoomScale(mActualScale, true); 3479 } 3480 3481 @Override 3482 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3483 super.onScrollChanged(l, t, oldl, oldt); 3484 sendOurVisibleRect(); 3485 } 3486 3487 3488 @Override 3489 public boolean dispatchKeyEvent(KeyEvent event) { 3490 boolean dispatch = true; 3491 3492 if (!inEditingMode()) { 3493 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3494 mGotKeyDown = true; 3495 } else { 3496 if (!mGotKeyDown) { 3497 /* 3498 * We got a key up for which we were not the recipient of 3499 * the original key down. Don't give it to the view. 3500 */ 3501 dispatch = false; 3502 } 3503 mGotKeyDown = false; 3504 } 3505 } 3506 3507 if (dispatch) { 3508 return super.dispatchKeyEvent(event); 3509 } else { 3510 // We didn't dispatch, so let something else handle the key 3511 return false; 3512 } 3513 } 3514 3515 // Here are the snap align logic: 3516 // 1. If it starts nearly horizontally or vertically, snap align; 3517 // 2. If there is a dramitic direction change, let it go; 3518 // 3. If there is a same direction back and forth, lock it. 3519 3520 // adjustable parameters 3521 private int mMinLockSnapReverseDistance; 3522 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 3523 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 3524 3525 @Override 3526 public boolean onTouchEvent(MotionEvent ev) { 3527 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 3528 return false; 3529 } 3530 3531 if (DebugFlags.WEB_VIEW) { 3532 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 3533 + mTouchMode); 3534 } 3535 3536 int action = ev.getAction(); 3537 float x = ev.getX(); 3538 float y = ev.getY(); 3539 long eventTime = ev.getEventTime(); 3540 3541 // Due to the touch screen edge effect, a touch closer to the edge 3542 // always snapped to the edge. As getViewWidth() can be different from 3543 // getWidth() due to the scrollbar, adjusting the point to match 3544 // getViewWidth(). Same applied to the height. 3545 if (x > getViewWidth() - 1) { 3546 x = getViewWidth() - 1; 3547 } 3548 if (y > getViewHeight() - 1) { 3549 y = getViewHeight() - 1; 3550 } 3551 3552 // pass the touch events from UI thread to WebCore thread 3553 if (mForwardTouchEvents && mTouchMode != SCROLL_ZOOM_OUT 3554 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN 3555 && mTouchMode != SCROLL_ZOOM_ANIMATION_OUT 3556 && (action != MotionEvent.ACTION_MOVE || 3557 eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 3558 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 3559 ted.mAction = action; 3560 ted.mX = viewToContent((int) x + mScrollX); 3561 ted.mY = viewToContent((int) y + mScrollY); 3562 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 3563 mLastSentTouchTime = eventTime; 3564 } 3565 3566 int deltaX = (int) (mLastTouchX - x); 3567 int deltaY = (int) (mLastTouchY - y); 3568 3569 switch (action) { 3570 case MotionEvent.ACTION_DOWN: { 3571 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3572 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3573 // no interaction while animation is in progress 3574 break; 3575 } else if (mTouchMode == SCROLL_ZOOM_OUT) { 3576 mLastScrollX = mZoomScrollX; 3577 mLastScrollY = mZoomScrollY; 3578 // If two taps are close, ignore the first tap 3579 } else if (!mScroller.isFinished()) { 3580 mScroller.abortAnimation(); 3581 mTouchMode = TOUCH_DRAG_START_MODE; 3582 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 3583 } else if (mShiftIsPressed) { 3584 mSelectX = mScrollX + (int) x; 3585 mSelectY = mScrollY + (int) y; 3586 mTouchMode = TOUCH_SELECT_MODE; 3587 if (DebugFlags.WEB_VIEW) { 3588 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 3589 } 3590 nativeMoveSelection(viewToContent(mSelectX) 3591 , viewToContent(mSelectY), false); 3592 mTouchSelection = mExtendSelection = true; 3593 } else { 3594 mTouchMode = TOUCH_INIT_MODE; 3595 mPreventDrag = mForwardTouchEvents; 3596 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 3597 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 3598 (eventTime - mLastTouchUpTime), eventTime); 3599 } 3600 } 3601 // Trigger the link 3602 if (mTouchMode == TOUCH_INIT_MODE) { 3603 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3604 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 3605 } 3606 // Remember where the motion event started 3607 mLastTouchX = x; 3608 mLastTouchY = y; 3609 mLastTouchTime = eventTime; 3610 mVelocityTracker = VelocityTracker.obtain(); 3611 mSnapScrollMode = SNAP_NONE; 3612 break; 3613 } 3614 case MotionEvent.ACTION_MOVE: { 3615 if (mTouchMode == TOUCH_DONE_MODE 3616 || mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3617 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3618 // no dragging during scroll zoom animation 3619 break; 3620 } 3621 if (mTouchMode == SCROLL_ZOOM_OUT) { 3622 // while fully zoomed out, move the virtual window 3623 moveZoomScrollWindow(x, y); 3624 break; 3625 } 3626 mVelocityTracker.addMovement(ev); 3627 3628 if (mTouchMode != TOUCH_DRAG_MODE) { 3629 if (mTouchMode == TOUCH_SELECT_MODE) { 3630 mSelectX = mScrollX + (int) x; 3631 mSelectY = mScrollY + (int) y; 3632 if (DebugFlags.WEB_VIEW) { 3633 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 3634 } 3635 nativeMoveSelection(viewToContent(mSelectX) 3636 , viewToContent(mSelectY), true); 3637 invalidate(); 3638 break; 3639 } 3640 if (mPreventDrag || (deltaX * deltaX + deltaY * deltaY) 3641 < mTouchSlopSquare) { 3642 break; 3643 } 3644 3645 if (mTouchMode == TOUCH_SHORTPRESS_MODE 3646 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3647 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3648 } else if (mTouchMode == TOUCH_INIT_MODE) { 3649 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3650 } 3651 3652 // if it starts nearly horizontal or vertical, enforce it 3653 int ax = Math.abs(deltaX); 3654 int ay = Math.abs(deltaY); 3655 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 3656 mSnapScrollMode = SNAP_X; 3657 mSnapPositive = deltaX > 0; 3658 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 3659 mSnapScrollMode = SNAP_Y; 3660 mSnapPositive = deltaY > 0; 3661 } 3662 3663 mTouchMode = TOUCH_DRAG_MODE; 3664 WebViewCore.pauseUpdate(mWebViewCore); 3665 nativeHideCursor(); 3666 // remove the zoom anchor if there is any 3667 if (mZoomScale != 0) { 3668 mWebViewCore 3669 .sendMessage(EventHub.SET_SNAP_ANCHOR, 0, 0); 3670 } 3671 WebSettings settings = getSettings(); 3672 if (settings.supportZoom() 3673 && settings.getBuiltInZoomControls() 3674 && !mZoomButtonsController.isVisible() 3675 && (canZoomScrollOut() || 3676 mMinZoomScale < mMaxZoomScale)) { 3677 mZoomButtonsController.setVisible(true); 3678 } 3679 } 3680 3681 // do pan 3682 int newScrollX = pinLocX(mScrollX + deltaX); 3683 deltaX = newScrollX - mScrollX; 3684 int newScrollY = pinLocY(mScrollY + deltaY); 3685 deltaY = newScrollY - mScrollY; 3686 boolean done = false; 3687 if (deltaX == 0 && deltaY == 0) { 3688 done = true; 3689 } else { 3690 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 3691 int ax = Math.abs(deltaX); 3692 int ay = Math.abs(deltaY); 3693 if (mSnapScrollMode == SNAP_X) { 3694 // radical change means getting out of snap mode 3695 if (ay > MAX_SLOPE_FOR_DIAG * ax 3696 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3697 mSnapScrollMode = SNAP_NONE; 3698 } 3699 // reverse direction means lock in the snap mode 3700 if ((ax > MAX_SLOPE_FOR_DIAG * ay) && 3701 ((mSnapPositive && 3702 deltaX < -mMinLockSnapReverseDistance) 3703 || (!mSnapPositive && 3704 deltaX > mMinLockSnapReverseDistance))) { 3705 mSnapScrollMode = SNAP_X_LOCK; 3706 } 3707 } else { 3708 // radical change means getting out of snap mode 3709 if ((ax > MAX_SLOPE_FOR_DIAG * ay) 3710 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3711 mSnapScrollMode = SNAP_NONE; 3712 } 3713 // reverse direction means lock in the snap mode 3714 if ((ay > MAX_SLOPE_FOR_DIAG * ax) && 3715 ((mSnapPositive && 3716 deltaY < -mMinLockSnapReverseDistance) 3717 || (!mSnapPositive && 3718 deltaY > mMinLockSnapReverseDistance))) { 3719 mSnapScrollMode = SNAP_Y_LOCK; 3720 } 3721 } 3722 } 3723 3724 if (mSnapScrollMode == SNAP_X 3725 || mSnapScrollMode == SNAP_X_LOCK) { 3726 scrollBy(deltaX, 0); 3727 mLastTouchX = x; 3728 } else if (mSnapScrollMode == SNAP_Y 3729 || mSnapScrollMode == SNAP_Y_LOCK) { 3730 scrollBy(0, deltaY); 3731 mLastTouchY = y; 3732 } else { 3733 scrollBy(deltaX, deltaY); 3734 mLastTouchX = x; 3735 mLastTouchY = y; 3736 } 3737 mLastTouchTime = eventTime; 3738 mUserScroll = true; 3739 } 3740 3741 if (!getSettings().getBuiltInZoomControls()) { 3742 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 3743 boolean showMagnify = canZoomScrollOut(); 3744 if (mZoomControls != null && (showPlusMinus || showMagnify)) { 3745 if (mZoomControls.getVisibility() == View.VISIBLE) { 3746 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 3747 } else { 3748 mZoomControls.show(showPlusMinus, showMagnify); 3749 } 3750 mPrivateHandler.postDelayed(mZoomControlRunnable, 3751 ZOOM_CONTROLS_TIMEOUT); 3752 } 3753 } 3754 3755 if (done) { 3756 // return false to indicate that we can't pan out of the 3757 // view space 3758 return false; 3759 } 3760 break; 3761 } 3762 case MotionEvent.ACTION_UP: { 3763 mLastTouchUpTime = eventTime; 3764 switch (mTouchMode) { 3765 case TOUCH_INIT_MODE: // tap 3766 case TOUCH_SHORTPRESS_START_MODE: 3767 case TOUCH_SHORTPRESS_MODE: 3768 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3769 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3770 mTouchMode = TOUCH_DONE_MODE; 3771 doShortPress(); 3772 break; 3773 case TOUCH_SELECT_MODE: 3774 commitCopy(); 3775 mTouchSelection = false; 3776 break; 3777 case SCROLL_ZOOM_ANIMATION_IN: 3778 case SCROLL_ZOOM_ANIMATION_OUT: 3779 // no action during scroll animation 3780 break; 3781 case SCROLL_ZOOM_OUT: 3782 if (DebugFlags.WEB_VIEW) { 3783 Log.v(LOGTAG, "ACTION_UP SCROLL_ZOOM_OUT" 3784 + " eventTime - mLastTouchTime=" 3785 + (eventTime - mLastTouchTime)); 3786 } 3787 // for now, always zoom back when the drag completes 3788 if (true || eventTime - mLastTouchTime < TAP_TIMEOUT) { 3789 // but if we tap, zoom in where we tap 3790 if (eventTime - mLastTouchTime < TAP_TIMEOUT) { 3791 zoomScrollTap(x, y); 3792 } 3793 // start zooming in back to the original view 3794 setZoomScrollIn(); 3795 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 3796 invalidate(); 3797 } 3798 break; 3799 case TOUCH_DRAG_MODE: 3800 // if the user waits a while w/o moving before the 3801 // up, we don't want to do a fling 3802 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 3803 mVelocityTracker.addMovement(ev); 3804 doFling(); 3805 break; 3806 } 3807 WebViewCore.resumeUpdate(mWebViewCore); 3808 break; 3809 case TOUCH_DRAG_START_MODE: 3810 case TOUCH_DONE_MODE: 3811 // do nothing 3812 break; 3813 } 3814 // we also use mVelocityTracker == null to tell us that we are 3815 // not "moving around", so we can take the slower/prettier 3816 // mode in the drawing code 3817 if (mVelocityTracker != null) { 3818 mVelocityTracker.recycle(); 3819 mVelocityTracker = null; 3820 } 3821 break; 3822 } 3823 case MotionEvent.ACTION_CANCEL: { 3824 // we also use mVelocityTracker == null to tell us that we are 3825 // not "moving around", so we can take the slower/prettier 3826 // mode in the drawing code 3827 if (mVelocityTracker != null) { 3828 mVelocityTracker.recycle(); 3829 mVelocityTracker = null; 3830 } 3831 if (mTouchMode == SCROLL_ZOOM_OUT || 3832 mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 3833 scrollTo(mZoomScrollX, mZoomScrollY); 3834 } else if (mTouchMode == TOUCH_DRAG_MODE) { 3835 WebViewCore.resumeUpdate(mWebViewCore); 3836 } 3837 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3838 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3839 mTouchMode = TOUCH_DONE_MODE; 3840 nativeHideCursor(); 3841 break; 3842 } 3843 } 3844 return true; 3845 } 3846 3847 private long mTrackballFirstTime = 0; 3848 private long mTrackballLastTime = 0; 3849 private float mTrackballRemainsX = 0.0f; 3850 private float mTrackballRemainsY = 0.0f; 3851 private int mTrackballXMove = 0; 3852 private int mTrackballYMove = 0; 3853 private boolean mExtendSelection = false; 3854 private boolean mTouchSelection = false; 3855 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 3856 private static final int TRACKBALL_TIMEOUT = 200; 3857 private static final int TRACKBALL_WAIT = 100; 3858 private static final int TRACKBALL_SCALE = 400; 3859 private static final int TRACKBALL_SCROLL_COUNT = 5; 3860 private static final int TRACKBALL_MOVE_COUNT = 10; 3861 private static final int TRACKBALL_MULTIPLIER = 3; 3862 private static final int SELECT_CURSOR_OFFSET = 16; 3863 private int mSelectX = 0; 3864 private int mSelectY = 0; 3865 private boolean mShiftIsPressed = false; 3866 private boolean mTrackballDown = false; 3867 private long mTrackballUpTime = 0; 3868 private long mLastCursorTime = 0; 3869 private Rect mLastCursorBounds; 3870 3871 // Set by default; BrowserActivity clears to interpret trackball data 3872 // directly for movement. Currently, the framework only passes 3873 // arrow key events, not trackball events, from one child to the next 3874 private boolean mMapTrackballToArrowKeys = true; 3875 3876 public void setMapTrackballToArrowKeys(boolean setMap) { 3877 mMapTrackballToArrowKeys = setMap; 3878 } 3879 3880 void resetTrackballTime() { 3881 mTrackballLastTime = 0; 3882 } 3883 3884 @Override 3885 public boolean onTrackballEvent(MotionEvent ev) { 3886 long time = ev.getEventTime(); 3887 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 3888 if (ev.getY() > 0) pageDown(true); 3889 if (ev.getY() < 0) pageUp(true); 3890 return true; 3891 } 3892 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 3893 mPrivateHandler.removeMessages(SWITCH_TO_CLICK); 3894 mTrackballDown = true; 3895 if (mNativeClass != 0) { 3896 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3897 } 3898 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 3899 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 3900 nativeSelectBestAt(mLastCursorBounds); 3901 } 3902 if (DebugFlags.WEB_VIEW) { 3903 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 3904 + " time=" + time 3905 + " mLastCursorTime=" + mLastCursorTime); 3906 } 3907 if (isInTouchMode()) requestFocusFromTouch(); 3908 return false; // let common code in onKeyDown at it 3909 } 3910 if (ev.getAction() == MotionEvent.ACTION_UP) { 3911 // LONG_PRESS_CENTER is set in common onKeyDown 3912 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3913 mTrackballDown = false; 3914 mTrackballUpTime = time; 3915 if (mShiftIsPressed) { 3916 if (mExtendSelection) { 3917 commitCopy(); 3918 } else { 3919 mExtendSelection = true; 3920 } 3921 } 3922 if (DebugFlags.WEB_VIEW) { 3923 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 3924 + " time=" + time 3925 ); 3926 } 3927 return false; // let common code in onKeyUp at it 3928 } 3929 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 3930 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 3931 return false; 3932 } 3933 // no move if we're still waiting on SWITCH_TO_CLICK timeout 3934 if (mTouchMode == TOUCH_DOUBLECLICK_MODE) { 3935 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent 2 click quit"); 3936 return true; 3937 } 3938 if (mTrackballDown) { 3939 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 3940 return true; // discard move if trackball is down 3941 } 3942 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 3943 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 3944 return true; 3945 } 3946 // TODO: alternatively we can do panning as touch does 3947 switchOutDrawHistory(); 3948 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 3949 if (DebugFlags.WEB_VIEW) { 3950 Log.v(LOGTAG, "onTrackballEvent time=" 3951 + time + " last=" + mTrackballLastTime); 3952 } 3953 mTrackballFirstTime = time; 3954 mTrackballXMove = mTrackballYMove = 0; 3955 } 3956 mTrackballLastTime = time; 3957 if (DebugFlags.WEB_VIEW) { 3958 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 3959 } 3960 mTrackballRemainsX += ev.getX(); 3961 mTrackballRemainsY += ev.getY(); 3962 doTrackball(time); 3963 return true; 3964 } 3965 3966 void moveSelection(float xRate, float yRate) { 3967 if (mNativeClass == 0) 3968 return; 3969 int width = getViewWidth(); 3970 int height = getViewHeight(); 3971 mSelectX += scaleTrackballX(xRate, width); 3972 mSelectY += scaleTrackballY(yRate, height); 3973 int maxX = width + mScrollX; 3974 int maxY = height + mScrollY; 3975 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 3976 , mSelectX)); 3977 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 3978 , mSelectY)); 3979 if (DebugFlags.WEB_VIEW) { 3980 Log.v(LOGTAG, "moveSelection" 3981 + " mSelectX=" + mSelectX 3982 + " mSelectY=" + mSelectY 3983 + " mScrollX=" + mScrollX 3984 + " mScrollY=" + mScrollY 3985 + " xRate=" + xRate 3986 + " yRate=" + yRate 3987 ); 3988 } 3989 nativeMoveSelection(viewToContent(mSelectX) 3990 , viewToContent(mSelectY), mExtendSelection); 3991 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 3992 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 3993 : 0; 3994 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 3995 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 3996 : 0; 3997 pinScrollBy(scrollX, scrollY, true, 0); 3998 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 3999 requestRectangleOnScreen(select); 4000 invalidate(); 4001 } 4002 4003 private int scaleTrackballX(float xRate, int width) { 4004 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4005 int nextXMove = xMove; 4006 if (xMove > 0) { 4007 if (xMove > mTrackballXMove) { 4008 xMove -= mTrackballXMove; 4009 } 4010 } else if (xMove < mTrackballXMove) { 4011 xMove -= mTrackballXMove; 4012 } 4013 mTrackballXMove = nextXMove; 4014 return xMove; 4015 } 4016 4017 private int scaleTrackballY(float yRate, int height) { 4018 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4019 int nextYMove = yMove; 4020 if (yMove > 0) { 4021 if (yMove > mTrackballYMove) { 4022 yMove -= mTrackballYMove; 4023 } 4024 } else if (yMove < mTrackballYMove) { 4025 yMove -= mTrackballYMove; 4026 } 4027 mTrackballYMove = nextYMove; 4028 return yMove; 4029 } 4030 4031 private int keyCodeToSoundsEffect(int keyCode) { 4032 switch(keyCode) { 4033 case KeyEvent.KEYCODE_DPAD_UP: 4034 return SoundEffectConstants.NAVIGATION_UP; 4035 case KeyEvent.KEYCODE_DPAD_RIGHT: 4036 return SoundEffectConstants.NAVIGATION_RIGHT; 4037 case KeyEvent.KEYCODE_DPAD_DOWN: 4038 return SoundEffectConstants.NAVIGATION_DOWN; 4039 case KeyEvent.KEYCODE_DPAD_LEFT: 4040 return SoundEffectConstants.NAVIGATION_LEFT; 4041 } 4042 throw new IllegalArgumentException("keyCode must be one of " + 4043 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4044 "KEYCODE_DPAD_LEFT}."); 4045 } 4046 4047 private void doTrackball(long time) { 4048 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4049 if (elapsed == 0) { 4050 elapsed = TRACKBALL_TIMEOUT; 4051 } 4052 float xRate = mTrackballRemainsX * 1000 / elapsed; 4053 float yRate = mTrackballRemainsY * 1000 / elapsed; 4054 if (mShiftIsPressed) { 4055 moveSelection(xRate, yRate); 4056 mTrackballRemainsX = mTrackballRemainsY = 0; 4057 return; 4058 } 4059 float ax = Math.abs(xRate); 4060 float ay = Math.abs(yRate); 4061 float maxA = Math.max(ax, ay); 4062 if (DebugFlags.WEB_VIEW) { 4063 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4064 + " xRate=" + xRate 4065 + " yRate=" + yRate 4066 + " mTrackballRemainsX=" + mTrackballRemainsX 4067 + " mTrackballRemainsY=" + mTrackballRemainsY); 4068 } 4069 int width = mContentWidth - getViewWidth(); 4070 int height = mContentHeight - getViewHeight(); 4071 if (width < 0) width = 0; 4072 if (height < 0) height = 0; 4073 if (mTouchMode == SCROLL_ZOOM_OUT) { 4074 int oldX = mZoomScrollX; 4075 int oldY = mZoomScrollY; 4076 int maxWH = Math.max(width, height); 4077 mZoomScrollX += scaleTrackballX(xRate, maxWH); 4078 mZoomScrollY += scaleTrackballY(yRate, maxWH); 4079 if (DebugFlags.WEB_VIEW) { 4080 Log.v(LOGTAG, "doTrackball SCROLL_ZOOM_OUT" 4081 + " mZoomScrollX=" + mZoomScrollX 4082 + " mZoomScrollY=" + mZoomScrollY); 4083 } 4084 mZoomScrollX = Math.min(width, Math.max(0, mZoomScrollX)); 4085 mZoomScrollY = Math.min(height, Math.max(0, mZoomScrollY)); 4086 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 4087 invalidate(); 4088 } 4089 mTrackballRemainsX = mTrackballRemainsY = 0; 4090 return; 4091 } 4092 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4093 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4094 maxA = Math.max(ax, ay); 4095 int count = Math.max(0, (int) maxA); 4096 int oldScrollX = mScrollX; 4097 int oldScrollY = mScrollY; 4098 if (count > 0) { 4099 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4100 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4101 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4102 KeyEvent.KEYCODE_DPAD_RIGHT; 4103 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4104 if (DebugFlags.WEB_VIEW) { 4105 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4106 + " count=" + count 4107 + " mTrackballRemainsX=" + mTrackballRemainsX 4108 + " mTrackballRemainsY=" + mTrackballRemainsY); 4109 } 4110 if (navHandledKey(selectKeyCode, count, false, time)) { 4111 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4112 } 4113 mTrackballRemainsX = mTrackballRemainsY = 0; 4114 } 4115 if (count >= TRACKBALL_SCROLL_COUNT) { 4116 int xMove = scaleTrackballX(xRate, width); 4117 int yMove = scaleTrackballY(yRate, height); 4118 if (DebugFlags.WEB_VIEW) { 4119 Log.v(LOGTAG, "doTrackball pinScrollBy" 4120 + " count=" + count 4121 + " xMove=" + xMove + " yMove=" + yMove 4122 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4123 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4124 ); 4125 } 4126 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4127 xMove = 0; 4128 } 4129 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4130 yMove = 0; 4131 } 4132 if (xMove != 0 || yMove != 0) { 4133 pinScrollBy(xMove, yMove, true, 0); 4134 } 4135 mUserScroll = true; 4136 } 4137 } 4138 4139 public void flingScroll(int vx, int vy) { 4140 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4141 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4142 4143 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 4144 invalidate(); 4145 } 4146 4147 private void doFling() { 4148 if (mVelocityTracker == null) { 4149 return; 4150 } 4151 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4152 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4153 4154 mVelocityTracker.computeCurrentVelocity(1000); 4155 int vx = (int) mVelocityTracker.getXVelocity(); 4156 int vy = (int) mVelocityTracker.getYVelocity(); 4157 4158 if (mSnapScrollMode != SNAP_NONE) { 4159 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_X_LOCK) { 4160 vy = 0; 4161 } else { 4162 vx = 0; 4163 } 4164 } 4165 4166 if (true /* EMG release: make our fling more like Maps' */) { 4167 // maps cuts their velocity in half 4168 vx = vx * 3 / 4; 4169 vy = vy * 3 / 4; 4170 } 4171 4172 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 4173 // TODO: duration is calculated based on velocity, if the range is 4174 // small, the animation will stop before duration is up. We may 4175 // want to calculate how long the animation is going to run to precisely 4176 // resume the webcore update. 4177 final int time = mScroller.getDuration(); 4178 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_UPDATE, time); 4179 invalidate(); 4180 } 4181 4182 private boolean zoomWithPreview(float scale) { 4183 float oldScale = mActualScale; 4184 4185 // snap to 100% if it is close 4186 if (scale > 0.95f && scale < 1.05f) { 4187 scale = 1.0f; 4188 } 4189 4190 setNewZoomScale(scale, false); 4191 4192 if (oldScale != mActualScale) { 4193 // use mZoomPickerScale to see zoom preview first 4194 mZoomStart = SystemClock.uptimeMillis(); 4195 mInvInitialZoomScale = 1.0f / oldScale; 4196 mInvFinalZoomScale = 1.0f / mActualScale; 4197 mZoomScale = mActualScale; 4198 invalidate(); 4199 return true; 4200 } else { 4201 return false; 4202 } 4203 } 4204 4205 /** 4206 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 4207 * in charge of installing this view to the view hierarchy. This view will 4208 * become visible when the user starts scrolling via touch and fade away if 4209 * the user does not interact with it. 4210 * <p/> 4211 * API version 3 introduces a built-in zoom mechanism that is shown 4212 * automatically by the MapView. This is the preferred approach for 4213 * showing the zoom UI. 4214 * 4215 * @deprecated The built-in zoom mechanism is preferred, see 4216 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 4217 */ 4218 @Deprecated 4219 public View getZoomControls() { 4220 if (!getSettings().supportZoom()) { 4221 Log.w(LOGTAG, "This WebView doesn't support zoom."); 4222 return null; 4223 } 4224 if (mZoomControls == null) { 4225 mZoomControls = createZoomControls(); 4226 4227 /* 4228 * need to be set to VISIBLE first so that getMeasuredHeight() in 4229 * {@link #onSizeChanged()} can return the measured value for proper 4230 * layout. 4231 */ 4232 mZoomControls.setVisibility(View.VISIBLE); 4233 mZoomControlRunnable = new Runnable() { 4234 public void run() { 4235 4236 /* Don't dismiss the controls if the user has 4237 * focus on them. Wait and check again later. 4238 */ 4239 if (!mZoomControls.hasFocus()) { 4240 mZoomControls.hide(); 4241 } else { 4242 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4243 mPrivateHandler.postDelayed(mZoomControlRunnable, 4244 ZOOM_CONTROLS_TIMEOUT); 4245 } 4246 } 4247 }; 4248 } 4249 return mZoomControls; 4250 } 4251 4252 private ExtendedZoomControls createZoomControls() { 4253 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 4254 , null); 4255 zoomControls.setOnZoomInClickListener(new OnClickListener() { 4256 public void onClick(View v) { 4257 // reset time out 4258 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4259 mPrivateHandler.postDelayed(mZoomControlRunnable, 4260 ZOOM_CONTROLS_TIMEOUT); 4261 zoomIn(); 4262 } 4263 }); 4264 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 4265 public void onClick(View v) { 4266 // reset time out 4267 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4268 mPrivateHandler.postDelayed(mZoomControlRunnable, 4269 ZOOM_CONTROLS_TIMEOUT); 4270 zoomOut(); 4271 } 4272 }); 4273 zoomControls.setOnZoomMagnifyClickListener(new OnClickListener() { 4274 public void onClick(View v) { 4275 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4276 mPrivateHandler.postDelayed(mZoomControlRunnable, 4277 ZOOM_CONTROLS_TIMEOUT); 4278 zoomScrollOut(); 4279 } 4280 }); 4281 return zoomControls; 4282 } 4283 4284 /** 4285 * Gets the {@link ZoomButtonsController} which can be used to add 4286 * additional buttons to the zoom controls window. 4287 * 4288 * @return The instance of {@link ZoomButtonsController} used by this class, 4289 * or null if it is unavailable. 4290 * @hide 4291 */ 4292 public ZoomButtonsController getZoomButtonsController() { 4293 return mZoomButtonsController; 4294 } 4295 4296 /** 4297 * Perform zoom in in the webview 4298 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 4299 */ 4300 public boolean zoomIn() { 4301 // TODO: alternatively we can disallow this during draw history mode 4302 switchOutDrawHistory(); 4303 return zoomWithPreview(mActualScale * 1.25f); 4304 } 4305 4306 /** 4307 * Perform zoom out in the webview 4308 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 4309 */ 4310 public boolean zoomOut() { 4311 // TODO: alternatively we can disallow this during draw history mode 4312 switchOutDrawHistory(); 4313 return zoomWithPreview(mActualScale * 0.8f); 4314 } 4315 4316 private void updateSelection() { 4317 if (mNativeClass == 0) { 4318 return; 4319 } 4320 // mLastTouchX and mLastTouchY are the point in the current viewport 4321 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4322 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4323 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 4324 contentX + mNavSlop, contentY + mNavSlop); 4325 nativeSelectBestAt(rect); 4326 } 4327 4328 /*package*/ void shortPressOnTextField() { 4329 if (inEditingMode()) { 4330 View v = mWebTextView; 4331 int x = viewToContent((v.getLeft() + v.getRight()) >> 1); 4332 int y = viewToContent((v.getTop() + v.getBottom()) >> 1); 4333 nativeMotionUp(x, y, mNavSlop); 4334 } 4335 } 4336 4337 private void doShortPress() { 4338 if (mNativeClass == 0) { 4339 return; 4340 } 4341 switchOutDrawHistory(); 4342 // mLastTouchX and mLastTouchY are the point in the current viewport 4343 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4344 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4345 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 4346 if (mLogEvent) { 4347 Checkin.updateStats(mContext.getContentResolver(), 4348 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 4349 } 4350 } 4351 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 4352 playSoundEffect(SoundEffectConstants.CLICK); 4353 } 4354 } 4355 4356 // Called by JNI to handle a touch on a node representing an email address, 4357 // address, or phone number 4358 private void overrideLoading(String url) { 4359 mCallbackProxy.uiOverrideUrlLoading(url); 4360 } 4361 4362 @Override 4363 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 4364 boolean result = false; 4365 if (inEditingMode()) { 4366 result = mWebTextView.requestFocus(direction, 4367 previouslyFocusedRect); 4368 } else { 4369 result = super.requestFocus(direction, previouslyFocusedRect); 4370 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 4371 // For cases such as GMail, where we gain focus from a direction, 4372 // we want to move to the first available link. 4373 // FIXME: If there are no visible links, we may not want to 4374 int fakeKeyDirection = 0; 4375 switch(direction) { 4376 case View.FOCUS_UP: 4377 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 4378 break; 4379 case View.FOCUS_DOWN: 4380 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 4381 break; 4382 case View.FOCUS_LEFT: 4383 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 4384 break; 4385 case View.FOCUS_RIGHT: 4386 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 4387 break; 4388 default: 4389 return result; 4390 } 4391 if (mNativeClass != 0 && !nativeHasCursorNode()) { 4392 navHandledKey(fakeKeyDirection, 1, true, 0); 4393 } 4394 } 4395 } 4396 return result; 4397 } 4398 4399 @Override 4400 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4401 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 4402 4403 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 4404 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 4405 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 4406 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 4407 4408 int measuredHeight = heightSize; 4409 int measuredWidth = widthSize; 4410 4411 // Grab the content size from WebViewCore. 4412 int contentHeight = mContentHeight; 4413 int contentWidth = mContentWidth; 4414 4415// Log.d(LOGTAG, "------- measure " + heightMode); 4416 4417 if (heightMode != MeasureSpec.EXACTLY) { 4418 mHeightCanMeasure = true; 4419 measuredHeight = contentHeight; 4420 if (heightMode == MeasureSpec.AT_MOST) { 4421 // If we are larger than the AT_MOST height, then our height can 4422 // no longer be measured and we should scroll internally. 4423 if (measuredHeight > heightSize) { 4424 measuredHeight = heightSize; 4425 mHeightCanMeasure = false; 4426 } 4427 } 4428 } else { 4429 mHeightCanMeasure = false; 4430 } 4431 if (mNativeClass != 0) { 4432 nativeSetHeightCanMeasure(mHeightCanMeasure); 4433 } 4434 // For the width, always use the given size unless unspecified. 4435 if (widthMode == MeasureSpec.UNSPECIFIED) { 4436 mWidthCanMeasure = true; 4437 measuredWidth = contentWidth; 4438 } else { 4439 mWidthCanMeasure = false; 4440 } 4441 4442 synchronized (this) { 4443 setMeasuredDimension(measuredWidth, measuredHeight); 4444 } 4445 } 4446 4447 @Override 4448 public boolean requestChildRectangleOnScreen(View child, 4449 Rect rect, 4450 boolean immediate) { 4451 rect.offset(child.getLeft() - child.getScrollX(), 4452 child.getTop() - child.getScrollY()); 4453 4454 int height = getHeight() - getHorizontalScrollbarHeight(); 4455 int screenTop = mScrollY; 4456 int screenBottom = screenTop + height; 4457 4458 int scrollYDelta = 0; 4459 4460 if (rect.bottom > screenBottom) { 4461 int oneThirdOfScreenHeight = height / 3; 4462 if (rect.height() > 2 * oneThirdOfScreenHeight) { 4463 // If the rectangle is too tall to fit in the bottom two thirds 4464 // of the screen, place it at the top. 4465 scrollYDelta = rect.top - screenTop; 4466 } else { 4467 // If the rectangle will still fit on screen, we want its 4468 // top to be in the top third of the screen. 4469 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 4470 } 4471 } else if (rect.top < screenTop) { 4472 scrollYDelta = rect.top - screenTop; 4473 } 4474 4475 int width = getWidth() - getVerticalScrollbarWidth(); 4476 int screenLeft = mScrollX; 4477 int screenRight = screenLeft + width; 4478 4479 int scrollXDelta = 0; 4480 4481 if (rect.right > screenRight && rect.left > screenLeft) { 4482 if (rect.width() > width) { 4483 scrollXDelta += (rect.left - screenLeft); 4484 } else { 4485 scrollXDelta += (rect.right - screenRight); 4486 } 4487 } else if (rect.left < screenLeft) { 4488 scrollXDelta -= (screenLeft - rect.left); 4489 } 4490 4491 if ((scrollYDelta | scrollXDelta) != 0) { 4492 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 4493 } 4494 4495 return false; 4496 } 4497 4498 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 4499 String replace, int newStart, int newEnd) { 4500 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 4501 arg.mReplace = replace; 4502 arg.mNewStart = newStart; 4503 arg.mNewEnd = newEnd; 4504 mTextGeneration++; 4505 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 4506 } 4507 4508 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 4509 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 4510 mWebViewCore.sendMessage(EventHub.CLICK); 4511 } 4512 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 4513 arg.mEvent = event; 4514 arg.mCurrentText = currentText; 4515 // Increase our text generation number, and pass it to webcore thread 4516 mTextGeneration++; 4517 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 4518 // WebKit's document state is not saved until about to leave the page. 4519 // To make sure the host application, like Browser, has the up to date 4520 // document state when it goes to background, we force to save the 4521 // document state. 4522 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 4523 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 4524 cursorData(), 1000); 4525 } 4526 4527 /* package */ WebViewCore getWebViewCore() { 4528 return mWebViewCore; 4529 } 4530 4531 //------------------------------------------------------------------------- 4532 // Methods can be called from a separate thread, like WebViewCore 4533 // If it needs to call the View system, it has to send message. 4534 //------------------------------------------------------------------------- 4535 4536 /** 4537 * General handler to receive message coming from webkit thread 4538 */ 4539 class PrivateHandler extends Handler { 4540 @Override 4541 public void handleMessage(Message msg) { 4542 if (DebugFlags.WEB_VIEW) { 4543 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 4544 > INVAL_RECT_MSG_ID ? Integer.toString(msg.what) 4545 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 4546 } 4547 switch (msg.what) { 4548 case REMEMBER_PASSWORD: { 4549 mDatabase.setUsernamePassword( 4550 msg.getData().getString("host"), 4551 msg.getData().getString("username"), 4552 msg.getData().getString("password")); 4553 ((Message) msg.obj).sendToTarget(); 4554 break; 4555 } 4556 case NEVER_REMEMBER_PASSWORD: { 4557 mDatabase.setUsernamePassword( 4558 msg.getData().getString("host"), null, null); 4559 ((Message) msg.obj).sendToTarget(); 4560 break; 4561 } 4562 case SWITCH_TO_SHORTPRESS: { 4563 if (mTouchMode == TOUCH_INIT_MODE) { 4564 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 4565 updateSelection(); 4566 } 4567 break; 4568 } 4569 case SWITCH_TO_LONGPRESS: { 4570 mTouchMode = TOUCH_DONE_MODE; 4571 performLongClick(); 4572 rebuildWebTextView(); 4573 break; 4574 } 4575 case SWITCH_TO_CLICK: 4576 mTouchMode = TOUCH_DONE_MODE; 4577 Rect visibleRect = sendOurVisibleRect(); 4578 // Note that sendOurVisibleRect calls viewToContent, so the 4579 // coordinates should be in content coordinates. 4580 if (!nativeCursorIntersects(visibleRect)) { 4581 break; 4582 } 4583 nativeSetFollowedLink(true); 4584 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 4585 cursorData()); 4586 playSoundEffect(SoundEffectConstants.CLICK); 4587 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4588 mWebViewCore.sendMessage(EventHub.CLICK); 4589 } 4590 break; 4591 case SCROLL_BY_MSG_ID: 4592 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 4593 break; 4594 case SYNC_SCROLL_TO_MSG_ID: 4595 if (mUserScroll) { 4596 // if user has scrolled explicitly, don't sync the 4597 // scroll position any more 4598 mUserScroll = false; 4599 break; 4600 } 4601 // fall through 4602 case SCROLL_TO_MSG_ID: 4603 if (setContentScrollTo(msg.arg1, msg.arg2)) { 4604 // if we can't scroll to the exact position due to pin, 4605 // send a message to WebCore to re-scroll when we get a 4606 // new picture 4607 mUserScroll = false; 4608 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 4609 msg.arg1, msg.arg2); 4610 } 4611 break; 4612 case SPAWN_SCROLL_TO_MSG_ID: 4613 spawnContentScrollTo(msg.arg1, msg.arg2); 4614 break; 4615 case NEW_PICTURE_MSG_ID: 4616 // called for new content 4617 final WebViewCore.DrawData draw = 4618 (WebViewCore.DrawData) msg.obj; 4619 final Point viewSize = draw.mViewPoint; 4620 if (mZoomScale > 0) { 4621 // use the same logic in sendViewSizeZoom() to make sure 4622 // the mZoomScale has matched the viewSize so that we 4623 // can clear mZoomScale 4624 if (Math.round(getViewWidth() / mZoomScale) == viewSize.x) { 4625 mZoomScale = 0; 4626 mWebViewCore.sendMessage(EventHub.SET_SNAP_ANCHOR, 4627 0, 0); 4628 } 4629 } 4630 if (!mMinZoomScaleFixed) { 4631 mMinZoomScale = (float) getViewWidth() 4632 / Math.max(ZOOM_OUT_WIDTH, draw.mWidthHeight.x); 4633 } 4634 // We update the layout (i.e. request a layout from the 4635 // view system) if the last view size that we sent to 4636 // WebCore matches the view size of the picture we just 4637 // received in the fixed dimension. 4638 final boolean updateLayout = viewSize.x == mLastWidthSent 4639 && viewSize.y == mLastHeightSent; 4640 recordNewContentSize(draw.mWidthHeight.x, 4641 draw.mWidthHeight.y, updateLayout); 4642 if (DebugFlags.WEB_VIEW) { 4643 Rect b = draw.mInvalRegion.getBounds(); 4644 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 4645 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 4646 } 4647 invalidate(contentToView(draw.mInvalRegion.getBounds())); 4648 if (mPictureListener != null) { 4649 mPictureListener.onNewPicture(WebView.this, capturePicture()); 4650 } 4651 break; 4652 case WEBCORE_INITIALIZED_MSG_ID: 4653 // nativeCreate sets mNativeClass to a non-zero value 4654 nativeCreate(msg.arg1); 4655 break; 4656 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 4657 // Make sure that the textfield is currently focused 4658 // and representing the same node as the pointer. 4659 if (inEditingMode() && 4660 mWebTextView.isSameTextField(msg.arg1)) { 4661 if (msg.getData().getBoolean("password")) { 4662 Spannable text = (Spannable) mWebTextView.getText(); 4663 int start = Selection.getSelectionStart(text); 4664 int end = Selection.getSelectionEnd(text); 4665 mWebTextView.setInPassword(true); 4666 // Restore the selection, which may have been 4667 // ruined by setInPassword. 4668 Spannable pword = 4669 (Spannable) mWebTextView.getText(); 4670 Selection.setSelection(pword, start, end); 4671 // If the text entry has created more events, ignore 4672 // this one. 4673 } else if (msg.arg2 == mTextGeneration) { 4674 mWebTextView.setTextAndKeepSelection( 4675 (String) msg.obj); 4676 } 4677 } 4678 break; 4679 case DID_FIRST_LAYOUT_MSG_ID: 4680 if (mNativeClass == 0) { 4681 break; 4682 } 4683 ScaleLimitData scaleLimit = (ScaleLimitData) msg.obj; 4684 int minScale = scaleLimit.mMinScale; 4685 if (minScale == 0) { 4686 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 4687 mMinZoomScaleFixed = false; 4688 } else { 4689 mMinZoomScale = (float) (minScale / 100.0); 4690 mMinZoomScaleFixed = true; 4691 } 4692 int maxScale = scaleLimit.mMaxScale; 4693 if (maxScale == 0) { 4694 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 4695 } else { 4696 mMaxZoomScale = (float) (maxScale / 100.0); 4697 } 4698 // If history Picture is drawn, don't update zoomWidth 4699 if (mDrawHistory) { 4700 break; 4701 } 4702 int width = getViewWidth(); 4703 if (width == 0) { 4704 break; 4705 } 4706 int initialScale = msg.arg1; 4707 int viewportWidth = msg.arg2; 4708 // by default starting a new page with 100% zoom scale. 4709 float scale = 1.0f; 4710 if (mInitialScale > 0) { 4711 scale = mInitialScale / 100.0f; 4712 } else { 4713 if (initialScale < 0) break; 4714 if (mWebViewCore.getSettings().getUseWideViewPort()) { 4715 // force viewSizeChanged by setting mLastWidthSent 4716 // to 0 4717 mLastWidthSent = 0; 4718 } 4719 if (initialScale == 0) { 4720 // if viewportWidth is defined and it is smaller 4721 // than the view width, zoom in to fill the view 4722 if (viewportWidth > 0 && viewportWidth < width) { 4723 scale = (float) width / viewportWidth; 4724 } 4725 } else { 4726 scale = initialScale / 100.0f; 4727 } 4728 } 4729 setNewZoomScale(scale, false); 4730 break; 4731 case UPDATE_TEXT_ENTRY_MSG_ID: 4732 // this is sent after finishing resize in WebViewCore. Make 4733 // sure the text edit box is still on the screen. 4734 if (inEditingMode() && nativeCursorIsTextInput()) { 4735 mWebTextView.bringIntoView(); 4736 } 4737 rebuildWebTextView(); 4738 break; 4739 case INVAL_RECT_MSG_ID: { 4740 Rect r = (Rect)msg.obj; 4741 if (r == null) { 4742 invalidate(); 4743 } else { 4744 // we need to scale r from content into view coords, 4745 // which viewInvalidate() does for us 4746 viewInvalidate(r.left, r.top, r.right, r.bottom); 4747 } 4748 break; 4749 } 4750 case REQUEST_FORM_DATA: 4751 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 4752 if (mWebTextView.isSameTextField(msg.arg1)) { 4753 mWebTextView.setAdapterCustom(adapter); 4754 } 4755 break; 4756 case UPDATE_CLIPBOARD: 4757 String str = (String) msg.obj; 4758 if (DebugFlags.WEB_VIEW) { 4759 Log.v(LOGTAG, "UPDATE_CLIPBOARD " + str); 4760 } 4761 try { 4762 IClipboard clip = IClipboard.Stub.asInterface( 4763 ServiceManager.getService("clipboard")); 4764 clip.setClipboardText(str); 4765 } catch (android.os.RemoteException e) { 4766 Log.e(LOGTAG, "Clipboard failed", e); 4767 } 4768 break; 4769 case RESUME_WEBCORE_UPDATE: 4770 WebViewCore.resumeUpdate(mWebViewCore); 4771 break; 4772 4773 case LONG_PRESS_CENTER: 4774 // as this is shared by keydown and trackballdown, reset all 4775 // the states 4776 mGotCenterDown = false; 4777 mTrackballDown = false; 4778 // LONG_PRESS_CENTER is sent as a delayed message. If we 4779 // switch to windows overview, the WebView will be 4780 // temporarily removed from the view system. In that case, 4781 // do nothing. 4782 if (getParent() != null) { 4783 performLongClick(); 4784 } 4785 break; 4786 4787 case WEBCORE_NEED_TOUCH_EVENTS: 4788 mForwardTouchEvents = (msg.arg1 != 0); 4789 break; 4790 4791 case PREVENT_TOUCH_ID: 4792 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 4793 mPreventDrag = msg.arg2 == 1; 4794 if (mPreventDrag) { 4795 mTouchMode = TOUCH_DONE_MODE; 4796 } 4797 } 4798 break; 4799 4800 default: 4801 super.handleMessage(msg); 4802 break; 4803 } 4804 } 4805 } 4806 4807 // Class used to use a dropdown for a <select> element 4808 private class InvokeListBox implements Runnable { 4809 // Whether the listbox allows multiple selection. 4810 private boolean mMultiple; 4811 // Passed in to a list with multiple selection to tell 4812 // which items are selected. 4813 private int[] mSelectedArray; 4814 // Passed in to a list with single selection to tell 4815 // where the initial selection is. 4816 private int mSelection; 4817 4818 private Container[] mContainers; 4819 4820 // Need these to provide stable ids to my ArrayAdapter, 4821 // which normally does not have stable ids. (Bug 1250098) 4822 private class Container extends Object { 4823 String mString; 4824 boolean mEnabled; 4825 int mId; 4826 4827 public String toString() { 4828 return mString; 4829 } 4830 } 4831 4832 /** 4833 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 4834 * and allow filtering. 4835 */ 4836 private class MyArrayListAdapter extends ArrayAdapter<Container> { 4837 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 4838 super(context, 4839 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 4840 com.android.internal.R.layout.select_dialog_singlechoice, 4841 objects); 4842 } 4843 4844 @Override 4845 public boolean hasStableIds() { 4846 // AdapterView's onChanged method uses this to determine whether 4847 // to restore the old state. Return false so that the old (out 4848 // of date) state does not replace the new, valid state. 4849 return false; 4850 } 4851 4852 private Container item(int position) { 4853 if (position < 0 || position >= getCount()) { 4854 return null; 4855 } 4856 return (Container) getItem(position); 4857 } 4858 4859 @Override 4860 public long getItemId(int position) { 4861 Container item = item(position); 4862 if (item == null) { 4863 return -1; 4864 } 4865 return item.mId; 4866 } 4867 4868 @Override 4869 public boolean areAllItemsEnabled() { 4870 return false; 4871 } 4872 4873 @Override 4874 public boolean isEnabled(int position) { 4875 Container item = item(position); 4876 if (item == null) { 4877 return false; 4878 } 4879 return item.mEnabled; 4880 } 4881 } 4882 4883 private InvokeListBox(String[] array, 4884 boolean[] enabled, int[] selected) { 4885 mMultiple = true; 4886 mSelectedArray = selected; 4887 4888 int length = array.length; 4889 mContainers = new Container[length]; 4890 for (int i = 0; i < length; i++) { 4891 mContainers[i] = new Container(); 4892 mContainers[i].mString = array[i]; 4893 mContainers[i].mEnabled = enabled[i]; 4894 mContainers[i].mId = i; 4895 } 4896 } 4897 4898 private InvokeListBox(String[] array, boolean[] enabled, int 4899 selection) { 4900 mSelection = selection; 4901 mMultiple = false; 4902 4903 int length = array.length; 4904 mContainers = new Container[length]; 4905 for (int i = 0; i < length; i++) { 4906 mContainers[i] = new Container(); 4907 mContainers[i].mString = array[i]; 4908 mContainers[i].mEnabled = enabled[i]; 4909 mContainers[i].mId = i; 4910 } 4911 } 4912 4913 /* 4914 * Whenever the data set changes due to filtering, this class ensures 4915 * that the checked item remains checked. 4916 */ 4917 private class SingleDataSetObserver extends DataSetObserver { 4918 private long mCheckedId; 4919 private ListView mListView; 4920 private Adapter mAdapter; 4921 4922 /* 4923 * Create a new observer. 4924 * @param id The ID of the item to keep checked. 4925 * @param l ListView for getting and clearing the checked states 4926 * @param a Adapter for getting the IDs 4927 */ 4928 public SingleDataSetObserver(long id, ListView l, Adapter a) { 4929 mCheckedId = id; 4930 mListView = l; 4931 mAdapter = a; 4932 } 4933 4934 public void onChanged() { 4935 // The filter may have changed which item is checked. Find the 4936 // item that the ListView thinks is checked. 4937 int position = mListView.getCheckedItemPosition(); 4938 long id = mAdapter.getItemId(position); 4939 if (mCheckedId != id) { 4940 // Clear the ListView's idea of the checked item, since 4941 // it is incorrect 4942 mListView.clearChoices(); 4943 // Search for mCheckedId. If it is in the filtered list, 4944 // mark it as checked 4945 int count = mAdapter.getCount(); 4946 for (int i = 0; i < count; i++) { 4947 if (mAdapter.getItemId(i) == mCheckedId) { 4948 mListView.setItemChecked(i, true); 4949 break; 4950 } 4951 } 4952 } 4953 } 4954 4955 public void onInvalidate() {} 4956 } 4957 4958 public void run() { 4959 final ListView listView = (ListView) LayoutInflater.from(mContext) 4960 .inflate(com.android.internal.R.layout.select_dialog, null); 4961 final MyArrayListAdapter adapter = new 4962 MyArrayListAdapter(mContext, mContainers, mMultiple); 4963 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 4964 .setView(listView).setCancelable(true) 4965 .setInverseBackgroundForced(true); 4966 4967 if (mMultiple) { 4968 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 4969 public void onClick(DialogInterface dialog, int which) { 4970 mWebViewCore.sendMessage( 4971 EventHub.LISTBOX_CHOICES, 4972 adapter.getCount(), 0, 4973 listView.getCheckedItemPositions()); 4974 }}); 4975 b.setNegativeButton(android.R.string.cancel, 4976 new DialogInterface.OnClickListener() { 4977 public void onClick(DialogInterface dialog, int which) { 4978 mWebViewCore.sendMessage( 4979 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 4980 }}); 4981 } 4982 final AlertDialog dialog = b.create(); 4983 listView.setAdapter(adapter); 4984 listView.setFocusableInTouchMode(true); 4985 // There is a bug (1250103) where the checks in a ListView with 4986 // multiple items selected are associated with the positions, not 4987 // the ids, so the items do not properly retain their checks when 4988 // filtered. Do not allow filtering on multiple lists until 4989 // that bug is fixed. 4990 4991 listView.setTextFilterEnabled(!mMultiple); 4992 if (mMultiple) { 4993 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 4994 int length = mSelectedArray.length; 4995 for (int i = 0; i < length; i++) { 4996 listView.setItemChecked(mSelectedArray[i], true); 4997 } 4998 } else { 4999 listView.setOnItemClickListener(new OnItemClickListener() { 5000 public void onItemClick(AdapterView parent, View v, 5001 int position, long id) { 5002 mWebViewCore.sendMessage( 5003 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 5004 dialog.dismiss(); 5005 } 5006 }); 5007 if (mSelection != -1) { 5008 listView.setSelection(mSelection); 5009 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 5010 listView.setItemChecked(mSelection, true); 5011 DataSetObserver observer = new SingleDataSetObserver( 5012 adapter.getItemId(mSelection), listView, adapter); 5013 adapter.registerDataSetObserver(observer); 5014 } 5015 } 5016 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 5017 public void onCancel(DialogInterface dialog) { 5018 mWebViewCore.sendMessage( 5019 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5020 } 5021 }); 5022 dialog.show(); 5023 } 5024 } 5025 5026 /* 5027 * Request a dropdown menu for a listbox with multiple selection. 5028 * 5029 * @param array Labels for the listbox. 5030 * @param enabledArray Which positions are enabled. 5031 * @param selectedArray Which positions are initally selected. 5032 */ 5033 void requestListBox(String[] array, boolean[]enabledArray, int[] 5034 selectedArray) { 5035 mPrivateHandler.post( 5036 new InvokeListBox(array, enabledArray, selectedArray)); 5037 } 5038 5039 /* 5040 * Request a dropdown menu for a listbox with single selection or a single 5041 * <select> element. 5042 * 5043 * @param array Labels for the listbox. 5044 * @param enabledArray Which positions are enabled. 5045 * @param selection Which position is initally selected. 5046 */ 5047 void requestListBox(String[] array, boolean[]enabledArray, int selection) { 5048 mPrivateHandler.post( 5049 new InvokeListBox(array, enabledArray, selection)); 5050 } 5051 5052 // called by JNI 5053 private void sendMoveMouse(int frame, int node, int x, int y) { 5054 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 5055 new WebViewCore.CursorData(frame, node, x, y)); 5056 } 5057 5058 // called by JNI 5059 private void sendMoveMouseIfLatest(boolean setFocusControllerInactive) { 5060 if (setFocusControllerInactive) { 5061 setFocusControllerInactive(); 5062 } 5063 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, cursorData()); 5064 } 5065 5066 // called by JNI 5067 private void sendMotionUp(int touchGeneration, 5068 int frame, int node, int x, int y, int size) { 5069 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5070 touchUpData.mMoveGeneration = touchGeneration; 5071 touchUpData.mSize = size; 5072 touchUpData.mFrame = frame; 5073 touchUpData.mNode = node; 5074 touchUpData.mX = x; 5075 touchUpData.mY = y; 5076 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5077 } 5078 5079 5080 private int getScaledMaxXScroll() { 5081 int width; 5082 if (mHeightCanMeasure == false) { 5083 width = getViewWidth() / 4; 5084 } else { 5085 Rect visRect = new Rect(); 5086 calcOurVisibleRect(visRect); 5087 width = visRect.width() / 2; 5088 } 5089 // FIXME the divisor should be retrieved from somewhere 5090 return viewToContent(width); 5091 } 5092 5093 private int getScaledMaxYScroll() { 5094 int height; 5095 if (mHeightCanMeasure == false) { 5096 height = getViewHeight() / 4; 5097 } else { 5098 Rect visRect = new Rect(); 5099 calcOurVisibleRect(visRect); 5100 height = visRect.height() / 2; 5101 } 5102 // FIXME the divisor should be retrieved from somewhere 5103 // the closest thing today is hard-coded into ScrollView.java 5104 // (from ScrollView.java, line 363) int maxJump = height/2; 5105 return viewToContent(height); 5106 } 5107 5108 /** 5109 * Called by JNI to invalidate view 5110 */ 5111 private void viewInvalidate() { 5112 invalidate(); 5113 } 5114 5115 // return true if the key was handled 5116 private boolean navHandledKey(int keyCode, int count, boolean noScroll 5117 , long time) { 5118 if (mNativeClass == 0) { 5119 return false; 5120 } 5121 mLastCursorTime = time; 5122 mLastCursorBounds = nativeGetCursorRingBounds(); 5123 boolean keyHandled 5124 = nativeMoveCursor(keyCode, count, noScroll) == false; 5125 if (DebugFlags.WEB_VIEW) { 5126 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 5127 + " mLastCursorTime=" + mLastCursorTime 5128 + " handled=" + keyHandled); 5129 } 5130 if (keyHandled == false || mHeightCanMeasure == false) { 5131 return keyHandled; 5132 } 5133 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 5134 if (contentCursorRingBounds.isEmpty()) return keyHandled; 5135 Rect viewCursorRingBounds = contentToView(contentCursorRingBounds); 5136 Rect visRect = new Rect(); 5137 calcOurVisibleRect(visRect); 5138 Rect outset = new Rect(visRect); 5139 int maxXScroll = visRect.width() / 2; 5140 int maxYScroll = visRect.height() / 2; 5141 outset.inset(-maxXScroll, -maxYScroll); 5142 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 5143 return keyHandled; 5144 } 5145 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 5146 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 5147 maxXScroll); 5148 if (maxH > 0) { 5149 pinScrollBy(maxH, 0, true, 0); 5150 } else { 5151 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 5152 -maxXScroll); 5153 if (maxH < 0) { 5154 pinScrollBy(maxH, 0, true, 0); 5155 } 5156 } 5157 if (mLastCursorBounds.isEmpty()) return keyHandled; 5158 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 5159 return keyHandled; 5160 } 5161 if (DebugFlags.WEB_VIEW) { 5162 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 5163 + contentCursorRingBounds); 5164 } 5165 requestRectangleOnScreen(viewCursorRingBounds); 5166 mUserScroll = true; 5167 return keyHandled; 5168 } 5169 5170 /** 5171 * Set the background color. It's white by default. Pass 5172 * zero to make the view transparent. 5173 * @param color the ARGB color described by Color.java 5174 */ 5175 public void setBackgroundColor(int color) { 5176 mBackgroundColor = color; 5177 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 5178 } 5179 5180 public void debugDump() { 5181 nativeDebugDump(); 5182 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 5183 } 5184 5185 /** 5186 * Update our cache with updatedText. 5187 * @param updatedText The new text to put in our cache. 5188 */ 5189 /* package */ void updateCachedTextfield(String updatedText) { 5190 // Also place our generation number so that when we look at the cache 5191 // we recognize that it is up to date. 5192 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 5193 } 5194 5195 private native void nativeClearCursor(); 5196 private native void nativeCreate(int ptr); 5197 private native int nativeCursorFramePointer(); 5198 private native Rect nativeCursorNodeBounds(); 5199 /* package */ native int nativeCursorNodePointer(); 5200 /* package */ native boolean nativeCursorMatchesFocus(); 5201 private native boolean nativeCursorIntersects(Rect visibleRect); 5202 private native boolean nativeCursorIsAnchor(); 5203 private native boolean nativeCursorIsTextInput(); 5204 private native String nativeCursorText(); 5205 /** 5206 * Returns true if the native cursor node says it wants to handle key events 5207 * (ala plugins). This can only be called if mNativeClass is non-zero! 5208 */ 5209 private native boolean nativeCursorWantsKeyEvents(); 5210 private native void nativeDebugDump(); 5211 private native void nativeDestroy(); 5212 private native void nativeDrawCursorRing(Canvas content); 5213 private native void nativeDrawMatches(Canvas canvas); 5214 private native void nativeDrawSelection(Canvas content 5215 , int x, int y, boolean extendSelection); 5216 private native void nativeDrawSelectionRegion(Canvas content); 5217 private native void nativeDumpDisplayTree(String urlOrNull); 5218 private native int nativeFindAll(String findLower, String findUpper); 5219 private native void nativeFindNext(boolean forward); 5220 private native boolean nativeFocusCandidateIsPassword(); 5221 private native boolean nativeFocusCandidateIsRtlText(); 5222 private native boolean nativeFocusCandidateIsTextField(); 5223 private native boolean nativeFocusCandidateIsTextInput(); 5224 private native int nativeFocusCandidateMaxLength(); 5225 private native String nativeFocusCandidateName(); 5226 private native Rect nativeFocusCandidateNodeBounds(); 5227 /* package */ native int nativeFocusCandidatePointer(); 5228 private native String nativeFocusCandidateText(); 5229 private native int nativeFocusCandidateTextSize(); 5230 private native Rect nativeGetCursorRingBounds(); 5231 private native Region nativeGetSelection(); 5232 private native boolean nativeHasCursorNode(); 5233 private native boolean nativeHasFocusNode(); 5234 private native void nativeHideCursor(); 5235 private native String nativeImageURI(int x, int y); 5236 private native void nativeInstrumentReport(); 5237 // return true if the page has been scrolled 5238 private native boolean nativeMotionUp(int x, int y, int slop); 5239 // returns false if it handled the key 5240 private native boolean nativeMoveCursor(int keyCode, int count, 5241 boolean noScroll); 5242 private native int nativeMoveGeneration(); 5243 private native void nativeMoveSelection(int x, int y, 5244 boolean extendSelection); 5245 // Like many other of our native methods, you must make sure that 5246 // mNativeClass is not null before calling this method. 5247 private native void nativeRecordButtons(boolean focused, 5248 boolean pressed, boolean invalidate); 5249 private native void nativeSelectBestAt(Rect rect); 5250 private native void nativeSetFindIsDown(); 5251 private native void nativeSetFollowedLink(boolean followed); 5252 private native void nativeSetHeightCanMeasure(boolean measure); 5253 private native int nativeTextGeneration(); 5254 // Never call this version except by updateCachedTextfield(String) - 5255 // we always want to pass in our generation number. 5256 private native void nativeUpdateCachedTextfield(String updatedText, 5257 int generation); 5258 5259} 5260