WebView.java revision ef6da8fe3d5bc153eb934d440d0b3bfabd0e3279
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.app.AlertDialog; 20import android.content.Context; 21import android.content.DialogInterface; 22import android.content.Intent; 23import android.content.DialogInterface.OnCancelListener; 24import android.database.DataSetObserver; 25import android.graphics.Bitmap; 26import android.graphics.Canvas; 27import android.graphics.Color; 28import android.graphics.Paint; 29import android.graphics.Path; 30import android.graphics.Picture; 31import android.graphics.Point; 32import android.graphics.Rect; 33import android.graphics.Region; 34import android.net.http.SslCertificate; 35import android.net.Uri; 36import android.os.Bundle; 37import android.os.Handler; 38import android.os.Message; 39import android.os.ServiceManager; 40import android.os.SystemClock; 41import android.provider.Checkin; 42import android.text.IClipboard; 43import android.text.Selection; 44import android.text.Spannable; 45import android.util.AttributeSet; 46import android.util.EventLog; 47import android.util.Log; 48import android.view.Gravity; 49import android.view.KeyEvent; 50import android.view.LayoutInflater; 51import android.view.MotionEvent; 52import android.view.SoundEffectConstants; 53import android.view.VelocityTracker; 54import android.view.View; 55import android.view.ViewConfiguration; 56import android.view.ViewGroup; 57import android.view.ViewParent; 58import android.view.ViewTreeObserver; 59import android.view.animation.AlphaAnimation; 60import android.view.inputmethod.InputMethodManager; 61import android.webkit.WebTextView.AutoCompleteAdapter; 62import android.webkit.WebViewCore.EventHub; 63import android.widget.AbsoluteLayout; 64import android.widget.Adapter; 65import android.widget.AdapterView; 66import android.widget.ArrayAdapter; 67import android.widget.FrameLayout; 68import android.widget.ImageView; 69import android.widget.ListView; 70import android.widget.Scroller; 71import android.widget.Toast; 72import android.widget.ZoomButtonsController; 73import android.widget.ZoomControls; 74import android.widget.AdapterView.OnItemClickListener; 75 76import java.io.File; 77import java.io.FileInputStream; 78import java.io.FileNotFoundException; 79import java.io.FileOutputStream; 80import java.io.IOException; 81import java.net.URLDecoder; 82import java.util.ArrayList; 83import java.util.List; 84 85/** 86 * <p>A View that displays web pages. This class is the basis upon which you 87 * can roll your own web browser or simply display some online content within your Activity. 88 * It uses the WebKit rendering engine to display 89 * web pages and includes methods to navigate forward and backward 90 * through a history, zoom in and out, perform text searches and more.</p> 91 * <p>To enable the built-in zoom, set 92 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 93 * (introduced in API version 3). 94 * <p>Note that, in order for your Activity to access the Internet and load web pages 95 * in a WebView, you must add the <var>INTERNET</var> permissions to your 96 * Android Manifest file:</p> 97 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 98 * 99 * <p>This must be a child of the <code><manifest></code> element.</p> 100 * 101 * <h3>Basic usage</h3> 102 * 103 * <p>By default, a WebView provides no browser-like widgets, does not 104 * enable JavaScript and errors will be ignored. If your goal is only 105 * to display some HTML as a part of your UI, this is probably fine; 106 * the user won't need to interact with the web page beyond reading 107 * it, and the web page won't need to interact with the user. If you 108 * actually want a fully blown web browser, then you probably want to 109 * invoke the Browser application with your URL rather than show it 110 * with a WebView. See {@link android.content.Intent} for more information.</p> 111 * 112 * <pre class="prettyprint"> 113 * WebView webview = new WebView(this); 114 * setContentView(webview); 115 * 116 * // Simplest usage: note that an exception will NOT be thrown 117 * // if there is an error loading this page (see below). 118 * webview.loadUrl("http://slashdot.org/"); 119 * 120 * // Of course you can also load from any string: 121 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 122 * webview.loadData(summary, "text/html", "utf-8"); 123 * // ... although note that there are restrictions on what this HTML can do. 124 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 125 * </pre> 126 * 127 * <p>A WebView has several customization points where you can add your 128 * own behavior. These are:</p> 129 * 130 * <ul> 131 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 132 * This class is called when something that might impact a 133 * browser UI happens, for instance, progress updates and 134 * JavaScript alerts are sent here. 135 * </li> 136 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 137 * It will be called when things happen that impact the 138 * rendering of the content, eg, errors or form submissions. You 139 * can also intercept URL loading here.</li> 140 * <li>Via the {@link android.webkit.WebSettings} class, which contains 141 * miscellaneous configuration. </li> 142 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 143 * This lets you bind Java objects into the WebView so they can be 144 * controlled from the web pages JavaScript.</li> 145 * </ul> 146 * 147 * <p>Here's a more complicated example, showing error handling, 148 * settings, and progress notification:</p> 149 * 150 * <pre class="prettyprint"> 151 * // Let's display the progress in the activity title bar, like the 152 * // browser app does. 153 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 154 * 155 * webview.getSettings().setJavaScriptEnabled(true); 156 * 157 * final Activity activity = this; 158 * webview.setWebChromeClient(new WebChromeClient() { 159 * public void onProgressChanged(WebView view, int progress) { 160 * // Activities and WebViews measure progress with different scales. 161 * // The progress meter will automatically disappear when we reach 100% 162 * activity.setProgress(progress * 1000); 163 * } 164 * }); 165 * webview.setWebViewClient(new WebViewClient() { 166 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 167 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 168 * } 169 * }); 170 * 171 * webview.loadUrl("http://slashdot.org/"); 172 * </pre> 173 * 174 * <h3>Cookie and window management</h3> 175 * 176 * <p>For obvious security reasons, your application has its own 177 * cache, cookie store etc - it does not share the Browser 178 * applications data. Cookies are managed on a separate thread, so 179 * operations like index building don't block the UI 180 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 181 * if you want to use cookies in your application. 182 * </p> 183 * 184 * <p>By default, requests by the HTML to open new windows are 185 * ignored. This is true whether they be opened by JavaScript or by 186 * the target attribute on a link. You can customize your 187 * WebChromeClient to provide your own behaviour for opening multiple windows, 188 * and render them in whatever manner you want.</p> 189 * 190 * <p>Standard behavior for an Activity is to be destroyed and 191 * recreated when the devices orientation is changed. This will cause 192 * the WebView to reload the current page. If you don't want that, you 193 * can set your Activity to handle the orientation and keyboardHidden 194 * changes, and then just leave the WebView alone. It'll automatically 195 * re-orient itself as appropriate.</p> 196 */ 197public class WebView extends AbsoluteLayout 198 implements ViewTreeObserver.OnGlobalFocusChangeListener, 199 ViewGroup.OnHierarchyChangeListener { 200 201 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 202 // the screen all-the-time. Good for profiling our drawing code 203 static private final boolean AUTO_REDRAW_HACK = false; 204 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 205 private boolean mAutoRedraw; 206 207 static final String LOGTAG = "webview"; 208 209 static class ScaleLimitData { 210 int mMinScale; 211 int mMaxScale; 212 } 213 214 private static class ExtendedZoomControls extends FrameLayout { 215 public ExtendedZoomControls(Context context, AttributeSet attrs) { 216 super(context, attrs); 217 LayoutInflater inflater = (LayoutInflater) 218 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 219 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 220 mPlusMinusZoomControls = (ZoomControls) findViewById( 221 com.android.internal.R.id.zoomControls); 222 mZoomMagnify = (ImageView) findViewById(com.android.internal.R.id.zoomMagnify); 223 } 224 225 public void show(boolean showZoom, boolean canZoomOut) { 226 mPlusMinusZoomControls.setVisibility( 227 showZoom ? View.VISIBLE : View.GONE); 228 mZoomMagnify.setVisibility(canZoomOut ? View.VISIBLE : View.GONE); 229 fade(View.VISIBLE, 0.0f, 1.0f); 230 } 231 232 public void hide() { 233 fade(View.GONE, 1.0f, 0.0f); 234 } 235 236 private void fade(int visibility, float startAlpha, float endAlpha) { 237 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 238 anim.setDuration(500); 239 startAnimation(anim); 240 setVisibility(visibility); 241 } 242 243 public void setIsZoomMagnifyEnabled(boolean isEnabled) { 244 mZoomMagnify.setEnabled(isEnabled); 245 } 246 247 public boolean hasFocus() { 248 return mPlusMinusZoomControls.hasFocus() || mZoomMagnify.hasFocus(); 249 } 250 251 public void setOnZoomInClickListener(OnClickListener listener) { 252 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 253 } 254 255 public void setOnZoomOutClickListener(OnClickListener listener) { 256 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 257 } 258 259 public void setOnZoomMagnifyClickListener(OnClickListener listener) { 260 mZoomMagnify.setOnClickListener(listener); 261 } 262 263 ZoomControls mPlusMinusZoomControls; 264 ImageView mZoomMagnify; 265 } 266 267 /** 268 * Transportation object for returning WebView across thread boundaries. 269 */ 270 public class WebViewTransport { 271 private WebView mWebview; 272 273 /** 274 * Set the WebView to the transportation object. 275 * @param webview The WebView to transport. 276 */ 277 public synchronized void setWebView(WebView webview) { 278 mWebview = webview; 279 } 280 281 /** 282 * Return the WebView object. 283 * @return WebView The transported WebView object. 284 */ 285 public synchronized WebView getWebView() { 286 return mWebview; 287 } 288 } 289 290 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 291 private final CallbackProxy mCallbackProxy; 292 293 private final WebViewDatabase mDatabase; 294 295 // SSL certificate for the main top-level page (if secure) 296 private SslCertificate mCertificate; 297 298 // Native WebView pointer that is 0 until the native object has been 299 // created. 300 private int mNativeClass; 301 // This would be final but it needs to be set to null when the WebView is 302 // destroyed. 303 private WebViewCore mWebViewCore; 304 // Handler for dispatching UI messages. 305 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 306 private WebTextView mWebTextView; 307 // Used to ignore changes to webkit text that arrives to the UI side after 308 // more key events. 309 private int mTextGeneration; 310 311 // The list of loaded plugins. 312 private static PluginList sPluginList; 313 314 /** 315 * Position of the last touch event. 316 */ 317 private float mLastTouchX; 318 private float mLastTouchY; 319 320 /** 321 * Time of the last touch event. 322 */ 323 private long mLastTouchTime; 324 325 /** 326 * Time of the last time sending touch event to WebViewCore 327 */ 328 private long mLastSentTouchTime; 329 330 /** 331 * The minimum elapsed time before sending another ACTION_MOVE event to 332 * WebViewCore. This really should be tuned for each type of the devices. 333 * For example in Google Map api test case, it takes Dream device at least 334 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 335 * triggering the layout and drawing the picture. While the same process 336 * takes 60+ms on the current high speed device. If we make 337 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 338 * to WebViewCore queue and the real layout and draw events will be pushed 339 * to further, which slows down the refresh rate. Choose 50 to favor the 340 * current high speed devices. For Dream like devices, 100 is a better 341 * choice. Maybe make this in the buildspec later. 342 */ 343 private static final int TOUCH_SENT_INTERVAL = 50; 344 345 /** 346 * Helper class to get velocity for fling 347 */ 348 VelocityTracker mVelocityTracker; 349 350 /** 351 * Touch mode 352 */ 353 private int mTouchMode = TOUCH_DONE_MODE; 354 private static final int TOUCH_INIT_MODE = 1; 355 private static final int TOUCH_DRAG_START_MODE = 2; 356 private static final int TOUCH_DRAG_MODE = 3; 357 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 358 private static final int TOUCH_SHORTPRESS_MODE = 5; 359 private static final int TOUCH_DOUBLECLICK_MODE = 6; 360 private static final int TOUCH_DONE_MODE = 7; 361 private static final int TOUCH_SELECT_MODE = 8; 362 // touch mode values specific to scale+scroll 363 private static final int FIRST_SCROLL_ZOOM = 9; 364 private static final int SCROLL_ZOOM_ANIMATION_IN = 9; 365 private static final int SCROLL_ZOOM_ANIMATION_OUT = 10; 366 private static final int SCROLL_ZOOM_OUT = 11; 367 private static final int LAST_SCROLL_ZOOM = 11; 368 // end of touch mode values specific to scale+scroll 369 370 // Whether to forward the touch events to WebCore 371 private boolean mForwardTouchEvents = false; 372 373 // Whether to prevent drag during touch. The initial value depends on 374 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 375 // take control of touch events unless it says no for touch down event. 376 private boolean mPreventDrag; 377 378 // Whether or not to draw the cursor ring. 379 private boolean mDrawCursorRing = true; 380 381 // true if onPause has been called (and not onResume) 382 private boolean mIsPaused; 383 384 /** 385 * Customizable constant 386 */ 387 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 388 private int mTouchSlopSquare; 389 // pre-computed density adjusted navigation slop 390 private int mNavSlop; 391 // This should be ViewConfiguration.getTapTimeout() 392 // But system time out is 100ms, which is too short for the browser. 393 // In the browser, if it switches out of tap too soon, jump tap won't work. 394 private static final int TAP_TIMEOUT = 200; 395 // This should be ViewConfiguration.getLongPressTimeout() 396 // But system time out is 500ms, which is too short for the browser. 397 // With a short timeout, it's difficult to treat trigger a short press. 398 private static final int LONG_PRESS_TIMEOUT = 1000; 399 // needed to avoid flinging after a pause of no movement 400 private static final int MIN_FLING_TIME = 250; 401 // The time that the Zoom Controls are visible before fading away 402 private static final long ZOOM_CONTROLS_TIMEOUT = 403 ViewConfiguration.getZoomControlsTimeout(); 404 // The amount of content to overlap between two screens when going through 405 // pages with the space bar, in pixels. 406 private static final int PAGE_SCROLL_OVERLAP = 24; 407 408 /** 409 * These prevent calling requestLayout if either dimension is fixed. This 410 * depends on the layout parameters and the measure specs. 411 */ 412 boolean mWidthCanMeasure; 413 boolean mHeightCanMeasure; 414 415 // Remember the last dimensions we sent to the native side so we can avoid 416 // sending the same dimensions more than once. 417 int mLastWidthSent; 418 int mLastHeightSent; 419 420 private int mContentWidth; // cache of value from WebViewCore 421 private int mContentHeight; // cache of value from WebViewCore 422 423 // Need to have the separate control for horizontal and vertical scrollbar 424 // style than the View's single scrollbar style 425 private boolean mOverlayHorizontalScrollbar = true; 426 private boolean mOverlayVerticalScrollbar = false; 427 428 // our standard speed. this way small distances will be traversed in less 429 // time than large distances, but we cap the duration, so that very large 430 // distances won't take too long to get there. 431 private static final int STD_SPEED = 480; // pixels per second 432 // time for the longest scroll animation 433 private static final int MAX_DURATION = 750; // milliseconds 434 private Scroller mScroller; 435 436 private boolean mWrapContent; 437 438 /** 439 * Private message ids 440 */ 441 private static final int REMEMBER_PASSWORD = 1; 442 private static final int NEVER_REMEMBER_PASSWORD = 2; 443 private static final int SWITCH_TO_SHORTPRESS = 3; 444 private static final int SWITCH_TO_LONGPRESS = 4; 445 private static final int REQUEST_FORM_DATA = 6; 446 private static final int SWITCH_TO_CLICK = 7; 447 private static final int RESUME_WEBCORE_UPDATE = 8; 448 449 //! arg1=x, arg2=y 450 static final int SCROLL_TO_MSG_ID = 10; 451 static final int SCROLL_BY_MSG_ID = 11; 452 //! arg1=x, arg2=y 453 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 454 //! arg1=x, arg2=y 455 static final int SYNC_SCROLL_TO_MSG_ID = 13; 456 static final int NEW_PICTURE_MSG_ID = 14; 457 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 458 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 459 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 460 static final int DID_FIRST_LAYOUT_MSG_ID = 18; 461 462 static final int UPDATE_CLIPBOARD = 22; 463 static final int LONG_PRESS_CENTER = 23; 464 static final int PREVENT_TOUCH_ID = 24; 465 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 466 // obj=Rect in doc coordinates 467 static final int INVAL_RECT_MSG_ID = 26; 468 469 static final String[] HandlerDebugString = { 470 "REMEMBER_PASSWORD", // = 1; 471 "NEVER_REMEMBER_PASSWORD", // = 2; 472 "SWITCH_TO_SHORTPRESS", // = 3; 473 "SWITCH_TO_LONGPRESS", // = 4; 474 "5", 475 "REQUEST_FORM_DATA", // = 6; 476 "SWITCH_TO_CLICK", // = 7; 477 "RESUME_WEBCORE_UPDATE", // = 8; 478 "9", 479 "SCROLL_TO_MSG_ID", // = 10; 480 "SCROLL_BY_MSG_ID", // = 11; 481 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 482 "SYNC_SCROLL_TO_MSG_ID", // = 13; 483 "NEW_PICTURE_MSG_ID", // = 14; 484 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 485 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 486 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 487 "DID_FIRST_LAYOUT_MSG_ID", // = 18; 488 "19", 489 "20", 490 "21", // = 21; 491 "UPDATE_CLIPBOARD", // = 22; 492 "LONG_PRESS_CENTER", // = 23; 493 "PREVENT_TOUCH_ID", // = 24; 494 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 495 "INVAL_RECT_MSG_ID" // = 26; 496 }; 497 498 // width which view is considered to be fully zoomed out 499 static final int ZOOM_OUT_WIDTH = 1008; 500 501 // default scale limit. Depending on the display density 502 private static float DEFAULT_MAX_ZOOM_SCALE; 503 private static float DEFAULT_MIN_ZOOM_SCALE; 504 // scale limit, which can be set through viewport meta tag in the web page 505 private float mMaxZoomScale; 506 private float mMinZoomScale; 507 private boolean mMinZoomScaleFixed = false; 508 509 // initial scale in percent. 0 means using default. 510 private int mInitialScale = 0; 511 512 // default scale. Depending on the display density. 513 static int DEFAULT_SCALE_PERCENT; 514 private float mDefaultScale; 515 516 // set to true temporarily while the zoom control is being dragged 517 private boolean mPreviewZoomOnly = false; 518 519 // computed scale and inverse, from mZoomWidth. 520 private float mActualScale; 521 private float mInvActualScale; 522 // if this is non-zero, it is used on drawing rather than mActualScale 523 private float mZoomScale; 524 private float mInvInitialZoomScale; 525 private float mInvFinalZoomScale; 526 private long mZoomStart; 527 private static final int ZOOM_ANIMATION_LENGTH = 500; 528 529 private boolean mUserScroll = false; 530 531 private int mSnapScrollMode = SNAP_NONE; 532 private static final int SNAP_NONE = 1; 533 private static final int SNAP_X = 2; 534 private static final int SNAP_Y = 3; 535 private static final int SNAP_X_LOCK = 4; 536 private static final int SNAP_Y_LOCK = 5; 537 private boolean mSnapPositive; 538 539 // Used to match key downs and key ups 540 private boolean mGotKeyDown; 541 542 /* package */ static boolean mLogEvent = true; 543 private static final int EVENT_LOG_ZOOM_LEVEL_CHANGE = 70101; 544 private static final int EVENT_LOG_DOUBLE_TAP_DURATION = 70102; 545 546 // for event log 547 private long mLastTouchUpTime = 0; 548 549 /** 550 * URI scheme for telephone number 551 */ 552 public static final String SCHEME_TEL = "tel:"; 553 /** 554 * URI scheme for email address 555 */ 556 public static final String SCHEME_MAILTO = "mailto:"; 557 /** 558 * URI scheme for map address 559 */ 560 public static final String SCHEME_GEO = "geo:0,0?q="; 561 562 private int mBackgroundColor = Color.WHITE; 563 564 // Used to notify listeners of a new picture. 565 private PictureListener mPictureListener; 566 /** 567 * Interface to listen for new pictures as they change. 568 */ 569 public interface PictureListener { 570 /** 571 * Notify the listener that the picture has changed. 572 * @param view The WebView that owns the picture. 573 * @param picture The new picture. 574 */ 575 public void onNewPicture(WebView view, Picture picture); 576 } 577 578 // FIXME: Want to make this public, but need to change the API file. 579 public /*static*/ class HitTestResult { 580 /** 581 * Default HitTestResult, where the target is unknown 582 */ 583 public static final int UNKNOWN_TYPE = 0; 584 /** 585 * HitTestResult for hitting a HTML::a tag 586 */ 587 public static final int ANCHOR_TYPE = 1; 588 /** 589 * HitTestResult for hitting a phone number 590 */ 591 public static final int PHONE_TYPE = 2; 592 /** 593 * HitTestResult for hitting a map address 594 */ 595 public static final int GEO_TYPE = 3; 596 /** 597 * HitTestResult for hitting an email address 598 */ 599 public static final int EMAIL_TYPE = 4; 600 /** 601 * HitTestResult for hitting an HTML::img tag 602 */ 603 public static final int IMAGE_TYPE = 5; 604 /** 605 * HitTestResult for hitting a HTML::a tag which contains HTML::img 606 */ 607 public static final int IMAGE_ANCHOR_TYPE = 6; 608 /** 609 * HitTestResult for hitting a HTML::a tag with src=http 610 */ 611 public static final int SRC_ANCHOR_TYPE = 7; 612 /** 613 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 614 */ 615 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 616 /** 617 * HitTestResult for hitting an edit text area 618 */ 619 public static final int EDIT_TEXT_TYPE = 9; 620 621 private int mType; 622 private String mExtra; 623 624 HitTestResult() { 625 mType = UNKNOWN_TYPE; 626 } 627 628 private void setType(int type) { 629 mType = type; 630 } 631 632 private void setExtra(String extra) { 633 mExtra = extra; 634 } 635 636 public int getType() { 637 return mType; 638 } 639 640 public String getExtra() { 641 return mExtra; 642 } 643 } 644 645 // The View containing the zoom controls 646 private ExtendedZoomControls mZoomControls; 647 private Runnable mZoomControlRunnable; 648 649 private ZoomButtonsController mZoomButtonsController; 650 651 // These keep track of the center point of the zoom. They are used to 652 // determine the point around which we should zoom. 653 private float mZoomCenterX; 654 private float mZoomCenterY; 655 656 private ZoomButtonsController.OnZoomListener mZoomListener = 657 new ZoomButtonsController.OnZoomListener() { 658 659 public void onVisibilityChanged(boolean visible) { 660 if (visible) { 661 switchOutDrawHistory(); 662 updateZoomButtonsEnabled(); 663 } 664 } 665 666 public void onZoom(boolean zoomIn) { 667 if (zoomIn) { 668 zoomIn(); 669 } else { 670 zoomOut(); 671 } 672 673 updateZoomButtonsEnabled(); 674 } 675 }; 676 677 /** 678 * Construct a new WebView with a Context object. 679 * @param context A Context object used to access application assets. 680 */ 681 public WebView(Context context) { 682 this(context, null); 683 } 684 685 /** 686 * Construct a new WebView with layout parameters. 687 * @param context A Context object used to access application assets. 688 * @param attrs An AttributeSet passed to our parent. 689 */ 690 public WebView(Context context, AttributeSet attrs) { 691 this(context, attrs, com.android.internal.R.attr.webViewStyle); 692 } 693 694 /** 695 * Construct a new WebView with layout parameters and a default style. 696 * @param context A Context object used to access application assets. 697 * @param attrs An AttributeSet passed to our parent. 698 * @param defStyle The default style resource ID. 699 */ 700 public WebView(Context context, AttributeSet attrs, int defStyle) { 701 super(context, attrs, defStyle); 702 init(); 703 704 mCallbackProxy = new CallbackProxy(context, this); 705 mWebViewCore = new WebViewCore(context, this, mCallbackProxy); 706 mDatabase = WebViewDatabase.getInstance(context); 707 mScroller = new Scroller(context); 708 709 mZoomButtonsController = new ZoomButtonsController(this); 710 mZoomButtonsController.setOnZoomListener(mZoomListener); 711 // ZoomButtonsController positions the buttons at the bottom, but in 712 // the middle. Change their layout parameters so they appear on the 713 // right. 714 View controls = mZoomButtonsController.getZoomControls(); 715 ViewGroup.LayoutParams params = controls.getLayoutParams(); 716 if (params instanceof FrameLayout.LayoutParams) { 717 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 718 params; 719 frameParams.gravity = Gravity.RIGHT; 720 } 721 } 722 723 private void updateZoomButtonsEnabled() { 724 boolean canZoomIn = mActualScale < mMaxZoomScale; 725 boolean canZoomOut = mActualScale > mMinZoomScale; 726 if (!canZoomIn && !canZoomOut) { 727 // Hide the zoom in and out buttons, as well as the fit to page 728 // button, if the page cannot zoom 729 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 730 } else { 731 // Bring back the hidden zoom controls. 732 mZoomButtonsController.getZoomControls() 733 .setVisibility(View.VISIBLE); 734 // Set each one individually, as a page may be able to zoom in 735 // or out. 736 mZoomButtonsController.setZoomInEnabled(canZoomIn); 737 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 738 } 739 } 740 741 private void init() { 742 setWillNotDraw(false); 743 setFocusable(true); 744 setFocusableInTouchMode(true); 745 setClickable(true); 746 setLongClickable(true); 747 748 final int slop = ViewConfiguration.get(getContext()).getScaledTouchSlop(); 749 mTouchSlopSquare = slop * slop; 750 mMinLockSnapReverseDistance = slop; 751 final float density = getContext().getResources().getDisplayMetrics().density; 752 // use one line height, 16 based on our current default font, for how 753 // far we allow a touch be away from the edge of a link 754 mNavSlop = (int) (16 * density); 755 // density adjusted scale factors 756 DEFAULT_SCALE_PERCENT = (int) (100 * density); 757 mDefaultScale = density; 758 mActualScale = density; 759 mInvActualScale = 1 / density; 760 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 761 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 762 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 763 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 764 } 765 766 /* package */void updateDefaultZoomDensity(int zoomDensity) { 767 final float density = getContext().getResources().getDisplayMetrics().density 768 * 100 / zoomDensity; 769 if (Math.abs(density - mDefaultScale) > 0.01) { 770 float scaleFactor = density / mDefaultScale; 771 // adjust the limits 772 mNavSlop = (int) (16 * density); 773 DEFAULT_SCALE_PERCENT = (int) (100 * density); 774 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 775 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 776 mDefaultScale = density; 777 mMaxZoomScale *= scaleFactor; 778 mMinZoomScale *= scaleFactor; 779 setNewZoomScale(mActualScale * scaleFactor, false); 780 } 781 } 782 783 /* package */ boolean onSavePassword(String schemePlusHost, String username, 784 String password, final Message resumeMsg) { 785 boolean rVal = false; 786 if (resumeMsg == null) { 787 // null resumeMsg implies saving password silently 788 mDatabase.setUsernamePassword(schemePlusHost, username, password); 789 } else { 790 final Message remember = mPrivateHandler.obtainMessage( 791 REMEMBER_PASSWORD); 792 remember.getData().putString("host", schemePlusHost); 793 remember.getData().putString("username", username); 794 remember.getData().putString("password", password); 795 remember.obj = resumeMsg; 796 797 final Message neverRemember = mPrivateHandler.obtainMessage( 798 NEVER_REMEMBER_PASSWORD); 799 neverRemember.getData().putString("host", schemePlusHost); 800 neverRemember.getData().putString("username", username); 801 neverRemember.getData().putString("password", password); 802 neverRemember.obj = resumeMsg; 803 804 new AlertDialog.Builder(getContext()) 805 .setTitle(com.android.internal.R.string.save_password_label) 806 .setMessage(com.android.internal.R.string.save_password_message) 807 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 808 new DialogInterface.OnClickListener() { 809 public void onClick(DialogInterface dialog, int which) { 810 resumeMsg.sendToTarget(); 811 } 812 }) 813 .setNeutralButton(com.android.internal.R.string.save_password_remember, 814 new DialogInterface.OnClickListener() { 815 public void onClick(DialogInterface dialog, int which) { 816 remember.sendToTarget(); 817 } 818 }) 819 .setNegativeButton(com.android.internal.R.string.save_password_never, 820 new DialogInterface.OnClickListener() { 821 public void onClick(DialogInterface dialog, int which) { 822 neverRemember.sendToTarget(); 823 } 824 }) 825 .setOnCancelListener(new OnCancelListener() { 826 public void onCancel(DialogInterface dialog) { 827 resumeMsg.sendToTarget(); 828 } 829 }).show(); 830 // Return true so that WebViewCore will pause while the dialog is 831 // up. 832 rVal = true; 833 } 834 return rVal; 835 } 836 837 @Override 838 public void setScrollBarStyle(int style) { 839 if (style == View.SCROLLBARS_INSIDE_INSET 840 || style == View.SCROLLBARS_OUTSIDE_INSET) { 841 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 842 } else { 843 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 844 } 845 super.setScrollBarStyle(style); 846 } 847 848 /** 849 * Specify whether the horizontal scrollbar has overlay style. 850 * @param overlay TRUE if horizontal scrollbar should have overlay style. 851 */ 852 public void setHorizontalScrollbarOverlay(boolean overlay) { 853 mOverlayHorizontalScrollbar = overlay; 854 } 855 856 /** 857 * Specify whether the vertical scrollbar has overlay style. 858 * @param overlay TRUE if vertical scrollbar should have overlay style. 859 */ 860 public void setVerticalScrollbarOverlay(boolean overlay) { 861 mOverlayVerticalScrollbar = overlay; 862 } 863 864 /** 865 * Return whether horizontal scrollbar has overlay style 866 * @return TRUE if horizontal scrollbar has overlay style. 867 */ 868 public boolean overlayHorizontalScrollbar() { 869 return mOverlayHorizontalScrollbar; 870 } 871 872 /** 873 * Return whether vertical scrollbar has overlay style 874 * @return TRUE if vertical scrollbar has overlay style. 875 */ 876 public boolean overlayVerticalScrollbar() { 877 return mOverlayVerticalScrollbar; 878 } 879 880 /* 881 * Return the width of the view where the content of WebView should render 882 * to. 883 */ 884 private int getViewWidth() { 885 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 886 return getWidth(); 887 } else { 888 return getWidth() - getVerticalScrollbarWidth(); 889 } 890 } 891 892 /* 893 * Return the height of the view where the content of WebView should render 894 * to. 895 */ 896 private int getViewHeight() { 897 if (!isHorizontalScrollBarEnabled() || mOverlayHorizontalScrollbar) { 898 return getHeight(); 899 } else { 900 return getHeight() - getHorizontalScrollbarHeight(); 901 } 902 } 903 904 /** 905 * @return The SSL certificate for the main top-level page or null if 906 * there is no certificate (the site is not secure). 907 */ 908 public SslCertificate getCertificate() { 909 return mCertificate; 910 } 911 912 /** 913 * Sets the SSL certificate for the main top-level page. 914 */ 915 public void setCertificate(SslCertificate certificate) { 916 // here, the certificate can be null (if the site is not secure) 917 mCertificate = certificate; 918 } 919 920 //------------------------------------------------------------------------- 921 // Methods called by activity 922 //------------------------------------------------------------------------- 923 924 /** 925 * Save the username and password for a particular host in the WebView's 926 * internal database. 927 * @param host The host that required the credentials. 928 * @param username The username for the given host. 929 * @param password The password for the given host. 930 */ 931 public void savePassword(String host, String username, String password) { 932 mDatabase.setUsernamePassword(host, username, password); 933 } 934 935 /** 936 * Set the HTTP authentication credentials for a given host and realm. 937 * 938 * @param host The host for the credentials. 939 * @param realm The realm for the credentials. 940 * @param username The username for the password. If it is null, it means 941 * password can't be saved. 942 * @param password The password 943 */ 944 public void setHttpAuthUsernamePassword(String host, String realm, 945 String username, String password) { 946 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 947 } 948 949 /** 950 * Retrieve the HTTP authentication username and password for a given 951 * host & realm pair 952 * 953 * @param host The host for which the credentials apply. 954 * @param realm The realm for which the credentials apply. 955 * @return String[] if found, String[0] is username, which can be null and 956 * String[1] is password. Return null if it can't find anything. 957 */ 958 public String[] getHttpAuthUsernamePassword(String host, String realm) { 959 return mDatabase.getHttpAuthUsernamePassword(host, realm); 960 } 961 962 /** 963 * Destroy the internal state of the WebView. This method should be called 964 * after the WebView has been removed from the view system. No other 965 * methods may be called on a WebView after destroy. 966 */ 967 public void destroy() { 968 clearTextEntry(); 969 if (mWebViewCore != null) { 970 // Set the handlers to null before destroying WebViewCore so no 971 // more messages will be posted. 972 mCallbackProxy.setWebViewClient(null); 973 mCallbackProxy.setWebChromeClient(null); 974 // Tell WebViewCore to destroy itself 975 WebViewCore webViewCore = mWebViewCore; 976 mWebViewCore = null; // prevent using partial webViewCore 977 webViewCore.destroy(); 978 // Remove any pending messages that might not be serviced yet. 979 mPrivateHandler.removeCallbacksAndMessages(null); 980 mCallbackProxy.removeCallbacksAndMessages(null); 981 // Wake up the WebCore thread just in case it is waiting for a 982 // javascript dialog. 983 synchronized (mCallbackProxy) { 984 mCallbackProxy.notify(); 985 } 986 } 987 if (mNativeClass != 0) { 988 nativeDestroy(); 989 mNativeClass = 0; 990 } 991 } 992 993 /** 994 * Enables platform notifications of data state and proxy changes. 995 */ 996 public static void enablePlatformNotifications() { 997 Network.enablePlatformNotifications(); 998 } 999 1000 /** 1001 * If platform notifications are enabled, this should be called 1002 * from the Activity's onPause() or onStop(). 1003 */ 1004 public static void disablePlatformNotifications() { 1005 Network.disablePlatformNotifications(); 1006 } 1007 1008 /** 1009 * Inform WebView of the network state. This is used to set 1010 * the javascript property window.navigator.isOnline and 1011 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1012 * @param networkUp boolean indicating if network is available 1013 */ 1014 public void setNetworkAvailable(boolean networkUp) { 1015 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1016 networkUp ? 1 : 0, 0); 1017 } 1018 1019 /** 1020 * Save the state of this WebView used in 1021 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1022 * method no longer stores the display data for this WebView. The previous 1023 * behavior could potentially leak files if {@link #restoreState} was never 1024 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1025 * and restoring the display data. 1026 * @param outState The Bundle to store the WebView state. 1027 * @return The same copy of the back/forward list used to save the state. If 1028 * saveState fails, the returned list will be null. 1029 * @see #savePicture 1030 * @see #restorePicture 1031 */ 1032 public WebBackForwardList saveState(Bundle outState) { 1033 if (outState == null) { 1034 return null; 1035 } 1036 // We grab a copy of the back/forward list because a client of WebView 1037 // may have invalidated the history list by calling clearHistory. 1038 WebBackForwardList list = copyBackForwardList(); 1039 final int currentIndex = list.getCurrentIndex(); 1040 final int size = list.getSize(); 1041 // We should fail saving the state if the list is empty or the index is 1042 // not in a valid range. 1043 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1044 return null; 1045 } 1046 outState.putInt("index", currentIndex); 1047 // FIXME: This should just be a byte[][] instead of ArrayList but 1048 // Parcel.java does not have the code to handle multi-dimensional 1049 // arrays. 1050 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1051 for (int i = 0; i < size; i++) { 1052 WebHistoryItem item = list.getItemAtIndex(i); 1053 byte[] data = item.getFlattenedData(); 1054 if (data == null) { 1055 // It would be very odd to not have any data for a given history 1056 // item. And we will fail to rebuild the history list without 1057 // flattened data. 1058 return null; 1059 } 1060 history.add(data); 1061 } 1062 outState.putSerializable("history", history); 1063 if (mCertificate != null) { 1064 outState.putBundle("certificate", 1065 SslCertificate.saveState(mCertificate)); 1066 } 1067 return list; 1068 } 1069 1070 /** 1071 * Save the current display data to the Bundle given. Used in conjunction 1072 * with {@link #saveState}. 1073 * @param b A Bundle to store the display data. 1074 * @param dest The file to store the serialized picture data. Will be 1075 * overwritten with this WebView's picture data. 1076 * @return True if the picture was successfully saved. 1077 */ 1078 public boolean savePicture(Bundle b, File dest) { 1079 if (dest == null || b == null) { 1080 return false; 1081 } 1082 final Picture p = capturePicture(); 1083 try { 1084 final FileOutputStream out = new FileOutputStream(dest); 1085 p.writeToStream(out); 1086 out.close(); 1087 } catch (FileNotFoundException e){ 1088 e.printStackTrace(); 1089 } catch (IOException e) { 1090 e.printStackTrace(); 1091 } catch (RuntimeException e) { 1092 e.printStackTrace(); 1093 } 1094 if (dest.length() > 0) { 1095 b.putInt("scrollX", mScrollX); 1096 b.putInt("scrollY", mScrollY); 1097 b.putFloat("scale", mActualScale); 1098 return true; 1099 } 1100 return false; 1101 } 1102 1103 /** 1104 * Restore the display data that was save in {@link #savePicture}. Used in 1105 * conjunction with {@link #restoreState}. 1106 * @param b A Bundle containing the saved display data. 1107 * @param src The file where the picture data was stored. 1108 * @return True if the picture was successfully restored. 1109 */ 1110 public boolean restorePicture(Bundle b, File src) { 1111 if (src == null || b == null) { 1112 return false; 1113 } 1114 if (src.exists()) { 1115 Picture p = null; 1116 try { 1117 final FileInputStream in = new FileInputStream(src); 1118 p = Picture.createFromStream(in); 1119 in.close(); 1120 } catch (FileNotFoundException e){ 1121 e.printStackTrace(); 1122 } catch (RuntimeException e) { 1123 e.printStackTrace(); 1124 } catch (IOException e) { 1125 e.printStackTrace(); 1126 } 1127 if (p != null) { 1128 int sx = b.getInt("scrollX", 0); 1129 int sy = b.getInt("scrollY", 0); 1130 float scale = b.getFloat("scale", 1.0f); 1131 mDrawHistory = true; 1132 mHistoryPicture = p; 1133 mScrollX = sx; 1134 mScrollY = sy; 1135 mHistoryWidth = Math.round(p.getWidth() * scale); 1136 mHistoryHeight = Math.round(p.getHeight() * scale); 1137 // as getWidth() / getHeight() of the view are not 1138 // available yet, set up mActualScale, so that when 1139 // onSizeChanged() is called, the rest will be set 1140 // correctly 1141 mActualScale = scale; 1142 invalidate(); 1143 return true; 1144 } 1145 } 1146 return false; 1147 } 1148 1149 /** 1150 * Restore the state of this WebView from the given map used in 1151 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1152 * be called to restore the state of the WebView before using the object. If 1153 * it is called after the WebView has had a chance to build state (load 1154 * pages, create a back/forward list, etc.) there may be undesirable 1155 * side-effects. Please note that this method no longer restores the 1156 * display data for this WebView. See {@link #savePicture} and {@link 1157 * #restorePicture} for saving and restoring the display data. 1158 * @param inState The incoming Bundle of state. 1159 * @return The restored back/forward list or null if restoreState failed. 1160 * @see #savePicture 1161 * @see #restorePicture 1162 */ 1163 public WebBackForwardList restoreState(Bundle inState) { 1164 WebBackForwardList returnList = null; 1165 if (inState == null) { 1166 return returnList; 1167 } 1168 if (inState.containsKey("index") && inState.containsKey("history")) { 1169 mCertificate = SslCertificate.restoreState( 1170 inState.getBundle("certificate")); 1171 1172 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1173 final int index = inState.getInt("index"); 1174 // We can't use a clone of the list because we need to modify the 1175 // shared copy, so synchronize instead to prevent concurrent 1176 // modifications. 1177 synchronized (list) { 1178 final List<byte[]> history = 1179 (List<byte[]>) inState.getSerializable("history"); 1180 final int size = history.size(); 1181 // Check the index bounds so we don't crash in native code while 1182 // restoring the history index. 1183 if (index < 0 || index >= size) { 1184 return null; 1185 } 1186 for (int i = 0; i < size; i++) { 1187 byte[] data = history.remove(0); 1188 if (data == null) { 1189 // If we somehow have null data, we cannot reconstruct 1190 // the item and thus our history list cannot be rebuilt. 1191 return null; 1192 } 1193 WebHistoryItem item = new WebHistoryItem(data); 1194 list.addHistoryItem(item); 1195 } 1196 // Grab the most recent copy to return to the caller. 1197 returnList = copyBackForwardList(); 1198 // Update the copy to have the correct index. 1199 returnList.setCurrentIndex(index); 1200 } 1201 // Remove all pending messages because we are restoring previous 1202 // state. 1203 mWebViewCore.removeMessages(); 1204 // Send a restore state message. 1205 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1206 } 1207 return returnList; 1208 } 1209 1210 /** 1211 * Load the given url. 1212 * @param url The url of the resource to load. 1213 */ 1214 public void loadUrl(String url) { 1215 switchOutDrawHistory(); 1216 mWebViewCore.sendMessage(EventHub.LOAD_URL, url); 1217 clearTextEntry(); 1218 } 1219 1220 /** 1221 * Load the url with postData using "POST" method into the WebView. If url 1222 * is not a network url, it will be loaded with {link 1223 * {@link #loadUrl(String)} instead. 1224 * 1225 * @param url The url of the resource to load. 1226 * @param postData The data will be passed to "POST" request. 1227 * 1228 * @hide pending API solidification 1229 */ 1230 public void postUrl(String url, byte[] postData) { 1231 if (URLUtil.isNetworkUrl(url)) { 1232 switchOutDrawHistory(); 1233 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1234 arg.mUrl = url; 1235 arg.mPostData = postData; 1236 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1237 clearTextEntry(); 1238 } else { 1239 loadUrl(url); 1240 } 1241 } 1242 1243 /** 1244 * Load the given data into the WebView. This will load the data into 1245 * WebView using the data: scheme. Content loaded through this mechanism 1246 * does not have the ability to load content from the network. 1247 * @param data A String of data in the given encoding. 1248 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1249 * @param encoding The encoding of the data. i.e. utf-8, base64 1250 */ 1251 public void loadData(String data, String mimeType, String encoding) { 1252 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1253 } 1254 1255 /** 1256 * Load the given data into the WebView, use the provided URL as the base 1257 * URL for the content. The base URL is the URL that represents the page 1258 * that is loaded through this interface. As such, it is used for the 1259 * history entry and to resolve any relative URLs. The failUrl is used if 1260 * browser fails to load the data provided. If it is empty or null, and the 1261 * load fails, then no history entry is created. 1262 * <p> 1263 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1264 * files through "file:///android_asset/" for the sub resources is more 1265 * restricted. If you provide null or empty string as baseUrl, you won't be 1266 * able to access asset files. If the baseUrl is anything other than 1267 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1268 * sub resources. 1269 * 1270 * @param baseUrl Url to resolve relative paths with, if null defaults to 1271 * "about:blank" 1272 * @param data A String of data in the given encoding. 1273 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1274 * defaults to "text/html" 1275 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1276 * @param failUrl URL to use if the content fails to load or null. 1277 */ 1278 public void loadDataWithBaseURL(String baseUrl, String data, 1279 String mimeType, String encoding, String failUrl) { 1280 1281 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1282 loadData(data, mimeType, encoding); 1283 return; 1284 } 1285 switchOutDrawHistory(); 1286 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1287 arg.mBaseUrl = baseUrl; 1288 arg.mData = data; 1289 arg.mMimeType = mimeType; 1290 arg.mEncoding = encoding; 1291 arg.mFailUrl = failUrl; 1292 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1293 clearTextEntry(); 1294 } 1295 1296 /** 1297 * Stop the current load. 1298 */ 1299 public void stopLoading() { 1300 // TODO: should we clear all the messages in the queue before sending 1301 // STOP_LOADING? 1302 switchOutDrawHistory(); 1303 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1304 } 1305 1306 /** 1307 * Reload the current url. 1308 */ 1309 public void reload() { 1310 switchOutDrawHistory(); 1311 mWebViewCore.sendMessage(EventHub.RELOAD); 1312 } 1313 1314 /** 1315 * Return true if this WebView has a back history item. 1316 * @return True iff this WebView has a back history item. 1317 */ 1318 public boolean canGoBack() { 1319 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1320 synchronized (l) { 1321 if (l.getClearPending()) { 1322 return false; 1323 } else { 1324 return l.getCurrentIndex() > 0; 1325 } 1326 } 1327 } 1328 1329 /** 1330 * Go back in the history of this WebView. 1331 */ 1332 public void goBack() { 1333 goBackOrForward(-1); 1334 } 1335 1336 /** 1337 * Return true if this WebView has a forward history item. 1338 * @return True iff this Webview has a forward history item. 1339 */ 1340 public boolean canGoForward() { 1341 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1342 synchronized (l) { 1343 if (l.getClearPending()) { 1344 return false; 1345 } else { 1346 return l.getCurrentIndex() < l.getSize() - 1; 1347 } 1348 } 1349 } 1350 1351 /** 1352 * Go forward in the history of this WebView. 1353 */ 1354 public void goForward() { 1355 goBackOrForward(1); 1356 } 1357 1358 /** 1359 * Return true if the page can go back or forward the given 1360 * number of steps. 1361 * @param steps The negative or positive number of steps to move the 1362 * history. 1363 */ 1364 public boolean canGoBackOrForward(int steps) { 1365 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1366 synchronized (l) { 1367 if (l.getClearPending()) { 1368 return false; 1369 } else { 1370 int newIndex = l.getCurrentIndex() + steps; 1371 return newIndex >= 0 && newIndex < l.getSize(); 1372 } 1373 } 1374 } 1375 1376 /** 1377 * Go to the history item that is the number of steps away from 1378 * the current item. Steps is negative if backward and positive 1379 * if forward. 1380 * @param steps The number of steps to take back or forward in the back 1381 * forward list. 1382 */ 1383 public void goBackOrForward(int steps) { 1384 goBackOrForward(steps, false); 1385 } 1386 1387 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1388 // every time we go back or forward, we want to reset the 1389 // WebView certificate: 1390 // if the new site is secure, we will reload it and get a 1391 // new certificate set; 1392 // if the new site is not secure, the certificate must be 1393 // null, and that will be the case 1394 mCertificate = null; 1395 if (steps != 0) { 1396 clearTextEntry(); 1397 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1398 ignoreSnapshot ? 1 : 0); 1399 } 1400 } 1401 1402 private boolean extendScroll(int y) { 1403 int finalY = mScroller.getFinalY(); 1404 int newY = pinLocY(finalY + y); 1405 if (newY == finalY) return false; 1406 mScroller.setFinalY(newY); 1407 mScroller.extendDuration(computeDuration(0, y)); 1408 return true; 1409 } 1410 1411 /** 1412 * Scroll the contents of the view up by half the view size 1413 * @param top true to jump to the top of the page 1414 * @return true if the page was scrolled 1415 */ 1416 public boolean pageUp(boolean top) { 1417 if (mNativeClass == 0) { 1418 return false; 1419 } 1420 nativeClearCursor(); // start next trackball movement from page edge 1421 if (top) { 1422 // go to the top of the document 1423 return pinScrollTo(mScrollX, 0, true, 0); 1424 } 1425 // Page up 1426 int h = getHeight(); 1427 int y; 1428 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1429 y = -h + PAGE_SCROLL_OVERLAP; 1430 } else { 1431 y = -h / 2; 1432 } 1433 mUserScroll = true; 1434 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1435 : extendScroll(y); 1436 } 1437 1438 /** 1439 * Scroll the contents of the view down by half the page size 1440 * @param bottom true to jump to bottom of page 1441 * @return true if the page was scrolled 1442 */ 1443 public boolean pageDown(boolean bottom) { 1444 if (mNativeClass == 0) { 1445 return false; 1446 } 1447 nativeClearCursor(); // start next trackball movement from page edge 1448 if (bottom) { 1449 return pinScrollTo(mScrollX, mContentHeight, true, 0); 1450 } 1451 // Page down. 1452 int h = getHeight(); 1453 int y; 1454 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1455 y = h - PAGE_SCROLL_OVERLAP; 1456 } else { 1457 y = h / 2; 1458 } 1459 mUserScroll = true; 1460 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1461 : extendScroll(y); 1462 } 1463 1464 /** 1465 * Clear the view so that onDraw() will draw nothing but white background, 1466 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1467 */ 1468 public void clearView() { 1469 mContentWidth = 0; 1470 mContentHeight = 0; 1471 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1472 } 1473 1474 /** 1475 * Return a new picture that captures the current display of the webview. 1476 * This is a copy of the display, and will be unaffected if the webview 1477 * later loads a different URL. 1478 * 1479 * @return a picture containing the current contents of the view. Note this 1480 * picture is of the entire document, and is not restricted to the 1481 * bounds of the view. 1482 */ 1483 public Picture capturePicture() { 1484 if (null == mWebViewCore) return null; // check for out of memory tab 1485 return mWebViewCore.copyContentPicture(); 1486 } 1487 1488 /** 1489 * Return true if the browser is displaying a TextView for text input. 1490 */ 1491 private boolean inEditingMode() { 1492 return mWebTextView != null && mWebTextView.getParent() != null 1493 && mWebTextView.hasFocus(); 1494 } 1495 1496 private void clearTextEntry() { 1497 if (inEditingMode()) { 1498 mWebTextView.remove(); 1499 } 1500 } 1501 1502 /** 1503 * Return the current scale of the WebView 1504 * @return The current scale. 1505 */ 1506 public float getScale() { 1507 return mActualScale; 1508 } 1509 1510 /** 1511 * Set the initial scale for the WebView. 0 means default. If 1512 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1513 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1514 * WebView starts will this value as initial scale. 1515 * 1516 * @param scaleInPercent The initial scale in percent. 1517 */ 1518 public void setInitialScale(int scaleInPercent) { 1519 mInitialScale = scaleInPercent; 1520 } 1521 1522 /** 1523 * Invoke the graphical zoom picker widget for this WebView. This will 1524 * result in the zoom widget appearing on the screen to control the zoom 1525 * level of this WebView. 1526 */ 1527 public void invokeZoomPicker() { 1528 if (!getSettings().supportZoom()) { 1529 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1530 return; 1531 } 1532 clearTextEntry(); 1533 if (getSettings().getBuiltInZoomControls()) { 1534 mZoomButtonsController.setVisible(true); 1535 } else { 1536 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1537 mPrivateHandler.postDelayed(mZoomControlRunnable, 1538 ZOOM_CONTROLS_TIMEOUT); 1539 } 1540 } 1541 1542 /** 1543 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1544 * is found and the anchor has a non-javascript url, the HitTestResult type 1545 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1546 * anchor does not have a url or if it is a javascript url, the type will 1547 * be UNKNOWN_TYPE and the url has to be retrieved through 1548 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1549 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1550 * the "extra" field. A type of 1551 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1552 * a child node. If a phone number is found, the HitTestResult type is set 1553 * to PHONE_TYPE and the phone number is set in the "extra" field of 1554 * HitTestResult. If a map address is found, the HitTestResult type is set 1555 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1556 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1557 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1558 * HitTestResult type is set to UNKNOWN_TYPE. 1559 */ 1560 public HitTestResult getHitTestResult() { 1561 if (mNativeClass == 0) { 1562 return null; 1563 } 1564 1565 HitTestResult result = new HitTestResult(); 1566 if (nativeHasCursorNode()) { 1567 if (nativeCursorIsTextInput()) { 1568 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1569 } else { 1570 String text = nativeCursorText(); 1571 if (text != null) { 1572 if (text.startsWith(SCHEME_TEL)) { 1573 result.setType(HitTestResult.PHONE_TYPE); 1574 result.setExtra(text.substring(SCHEME_TEL.length())); 1575 } else if (text.startsWith(SCHEME_MAILTO)) { 1576 result.setType(HitTestResult.EMAIL_TYPE); 1577 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1578 } else if (text.startsWith(SCHEME_GEO)) { 1579 result.setType(HitTestResult.GEO_TYPE); 1580 result.setExtra(URLDecoder.decode(text 1581 .substring(SCHEME_GEO.length()))); 1582 } else if (nativeCursorIsAnchor()) { 1583 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1584 result.setExtra(text); 1585 } 1586 } 1587 } 1588 } 1589 int type = result.getType(); 1590 if (type == HitTestResult.UNKNOWN_TYPE 1591 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1592 // Now check to see if it is an image. 1593 int contentX = viewToContent((int) mLastTouchX + mScrollX); 1594 int contentY = viewToContent((int) mLastTouchY + mScrollY); 1595 String text = nativeImageURI(contentX, contentY); 1596 if (text != null) { 1597 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1598 HitTestResult.IMAGE_TYPE : 1599 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1600 result.setExtra(text); 1601 } 1602 } 1603 return result; 1604 } 1605 1606 /** 1607 * Request the href of an anchor element due to getFocusNodePath returning 1608 * "href." If hrefMsg is null, this method returns immediately and does not 1609 * dispatch hrefMsg to its target. 1610 * 1611 * @param hrefMsg This message will be dispatched with the result of the 1612 * request as the data member with "url" as key. The result can 1613 * be null. 1614 */ 1615 // FIXME: API change required to change the name of this function. We now 1616 // look at the cursor node, and not the focus node. Also, what is 1617 // getFocusNodePath? 1618 public void requestFocusNodeHref(Message hrefMsg) { 1619 if (hrefMsg == null || mNativeClass == 0) { 1620 return; 1621 } 1622 if (nativeCursorIsAnchor()) { 1623 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1624 nativeCursorFramePointer(), nativeCursorNodePointer(), 1625 hrefMsg); 1626 } 1627 } 1628 1629 /** 1630 * Request the url of the image last touched by the user. msg will be sent 1631 * to its target with a String representing the url as its object. 1632 * 1633 * @param msg This message will be dispatched with the result of the request 1634 * as the data member with "url" as key. The result can be null. 1635 */ 1636 public void requestImageRef(Message msg) { 1637 int contentX = viewToContent((int) mLastTouchX + mScrollX); 1638 int contentY = viewToContent((int) mLastTouchY + mScrollY); 1639 String ref = nativeImageURI(contentX, contentY); 1640 Bundle data = msg.getData(); 1641 data.putString("url", ref); 1642 msg.setData(data); 1643 msg.sendToTarget(); 1644 } 1645 1646 private static int pinLoc(int x, int viewMax, int docMax) { 1647// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1648 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1649 // pin the short document to the top/left of the screen 1650 x = 0; 1651// Log.d(LOGTAG, "--- center " + x); 1652 } else if (x < 0) { 1653 x = 0; 1654// Log.d(LOGTAG, "--- zero"); 1655 } else if (x + viewMax > docMax) { 1656 x = docMax - viewMax; 1657// Log.d(LOGTAG, "--- pin " + x); 1658 } 1659 return x; 1660 } 1661 1662 // Expects x in view coordinates 1663 private int pinLocX(int x) { 1664 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1665 } 1666 1667 // Expects y in view coordinates 1668 private int pinLocY(int y) { 1669 return pinLoc(y, getViewHeight(), computeVerticalScrollRange()); 1670 } 1671 1672 /*package*/ int viewToContent(int x) { 1673 return Math.round(x * mInvActualScale); 1674 } 1675 1676 private int contentToView(int x) { 1677 return Math.round(x * mActualScale); 1678 } 1679 1680 // Called by JNI to invalidate the View, given rectangle coordinates in 1681 // content space 1682 private void viewInvalidate(int l, int t, int r, int b) { 1683 invalidate(contentToView(l), contentToView(t), contentToView(r), 1684 contentToView(b)); 1685 } 1686 1687 // Called by JNI to invalidate the View after a delay, given rectangle 1688 // coordinates in content space 1689 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1690 postInvalidateDelayed(delay, contentToView(l), contentToView(t), 1691 contentToView(r), contentToView(b)); 1692 } 1693 1694 private Rect contentToView(Rect x) { 1695 return new Rect(contentToView(x.left), contentToView(x.top) 1696 , contentToView(x.right), contentToView(x.bottom)); 1697 } 1698 1699 /* call from webcoreview.draw(), so we're still executing in the UI thread 1700 */ 1701 private void recordNewContentSize(int w, int h, boolean updateLayout) { 1702 1703 // premature data from webkit, ignore 1704 if ((w | h) == 0) { 1705 return; 1706 } 1707 1708 // don't abort a scroll animation if we didn't change anything 1709 if (mContentWidth != w || mContentHeight != h) { 1710 // record new dimensions 1711 mContentWidth = w; 1712 mContentHeight = h; 1713 // If history Picture is drawn, don't update scroll. They will be 1714 // updated when we get out of that mode. 1715 if (!mDrawHistory) { 1716 // repin our scroll, taking into account the new content size 1717 int oldX = mScrollX; 1718 int oldY = mScrollY; 1719 mScrollX = pinLocX(mScrollX); 1720 mScrollY = pinLocY(mScrollY); 1721 // android.util.Log.d("skia", "recordNewContentSize - 1722 // abortAnimation"); 1723 mScroller.abortAnimation(); // just in case 1724 if (oldX != mScrollX || oldY != mScrollY) { 1725 sendOurVisibleRect(); 1726 } 1727 } 1728 } 1729 contentSizeChanged(updateLayout); 1730 } 1731 1732 private void setNewZoomScale(float scale, boolean force) { 1733 if (scale < mMinZoomScale) { 1734 scale = mMinZoomScale; 1735 } else if (scale > mMaxZoomScale) { 1736 scale = mMaxZoomScale; 1737 } 1738 if (scale != mActualScale || force) { 1739 if (mDrawHistory) { 1740 // If history Picture is drawn, don't update scroll. They will 1741 // be updated when we get out of that mode. 1742 if (scale != mActualScale && !mPreviewZoomOnly) { 1743 mCallbackProxy.onScaleChanged(mActualScale, scale); 1744 } 1745 mActualScale = scale; 1746 mInvActualScale = 1 / scale; 1747 if (!mPreviewZoomOnly) { 1748 sendViewSizeZoom(); 1749 } 1750 } else { 1751 // update our scroll so we don't appear to jump 1752 // i.e. keep the center of the doc in the center of the view 1753 1754 int oldX = mScrollX; 1755 int oldY = mScrollY; 1756 float ratio = scale * mInvActualScale; // old inverse 1757 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 1758 float sy = ratio * oldY + (ratio - 1) * mZoomCenterY; 1759 1760 // now update our new scale and inverse 1761 if (scale != mActualScale && !mPreviewZoomOnly) { 1762 mCallbackProxy.onScaleChanged(mActualScale, scale); 1763 } 1764 mActualScale = scale; 1765 mInvActualScale = 1 / scale; 1766 1767 // as we don't have animation for scaling, don't do animation 1768 // for scrolling, as it causes weird intermediate state 1769 // pinScrollTo(Math.round(sx), Math.round(sy)); 1770 mScrollX = pinLocX(Math.round(sx)); 1771 mScrollY = pinLocY(Math.round(sy)); 1772 1773 if (!mPreviewZoomOnly) { 1774 sendViewSizeZoom(); 1775 sendOurVisibleRect(); 1776 } 1777 } 1778 } 1779 } 1780 1781 // Used to avoid sending many visible rect messages. 1782 private Rect mLastVisibleRectSent; 1783 private Rect mLastGlobalRect; 1784 1785 private Rect sendOurVisibleRect() { 1786 Rect rect = new Rect(); 1787 calcOurContentVisibleRect(rect); 1788 // Rect.equals() checks for null input. 1789 if (!rect.equals(mLastVisibleRectSent)) { 1790 Point pos = new Point(rect.left, rect.top); 1791 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 1792 nativeMoveGeneration(), 0, pos); 1793 mLastVisibleRectSent = rect; 1794 } 1795 Rect globalRect = new Rect(); 1796 if (getGlobalVisibleRect(globalRect) 1797 && !globalRect.equals(mLastGlobalRect)) { 1798 if (DebugFlags.WEB_VIEW) { 1799 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 1800 + globalRect.top + ",r=" + globalRect.right + ",b=" 1801 + globalRect.bottom); 1802 } 1803 // TODO: the global offset is only used by windowRect() 1804 // in ChromeClientAndroid ; other clients such as touch 1805 // and mouse events could return view + screen relative points. 1806 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 1807 mLastGlobalRect = globalRect; 1808 } 1809 return rect; 1810 } 1811 1812 // Sets r to be the visible rectangle of our webview in view coordinates 1813 private void calcOurVisibleRect(Rect r) { 1814 Point p = new Point(); 1815 getGlobalVisibleRect(r, p); 1816 r.offset(-p.x, -p.y); 1817 if (mFindIsUp) { 1818 r.bottom -= FIND_HEIGHT; 1819 } 1820 } 1821 1822 // Sets r to be our visible rectangle in content coordinates 1823 private void calcOurContentVisibleRect(Rect r) { 1824 calcOurVisibleRect(r); 1825 r.left = viewToContent(r.left); 1826 r.top = viewToContent(r.top); 1827 r.right = viewToContent(r.right); 1828 r.bottom = viewToContent(r.bottom); 1829 } 1830 1831 /** 1832 * Compute unzoomed width and height, and if they differ from the last 1833 * values we sent, send them to webkit (to be used has new viewport) 1834 * 1835 * @return true if new values were sent 1836 */ 1837 private boolean sendViewSizeZoom() { 1838 int newWidth = Math.round(getViewWidth() * mInvActualScale); 1839 int newHeight = Math.round(getViewHeight() * mInvActualScale); 1840 /* 1841 * Because the native side may have already done a layout before the 1842 * View system was able to measure us, we have to send a height of 0 to 1843 * remove excess whitespace when we grow our width. This will trigger a 1844 * layout and a change in content size. This content size change will 1845 * mean that contentSizeChanged will either call this method directly or 1846 * indirectly from onSizeChanged. 1847 */ 1848 if (newWidth > mLastWidthSent && mWrapContent) { 1849 newHeight = 0; 1850 } 1851 // Avoid sending another message if the dimensions have not changed. 1852 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 1853 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, 1854 newWidth, newHeight, new Float(mActualScale)); 1855 mLastWidthSent = newWidth; 1856 mLastHeightSent = newHeight; 1857 return true; 1858 } 1859 return false; 1860 } 1861 1862 @Override 1863 protected int computeHorizontalScrollRange() { 1864 if (mDrawHistory) { 1865 return mHistoryWidth; 1866 } else { 1867 return contentToView(mContentWidth); 1868 } 1869 } 1870 1871 // Make sure this stays in sync with the actual height of the FindDialog. 1872 private static final int FIND_HEIGHT = 79; 1873 1874 @Override 1875 protected int computeVerticalScrollRange() { 1876 if (mDrawHistory) { 1877 return mHistoryHeight; 1878 } else { 1879 int height = contentToView(mContentHeight); 1880 if (mFindIsUp) { 1881 height += FIND_HEIGHT; 1882 } 1883 return height; 1884 } 1885 } 1886 1887 /** 1888 * Get the url for the current page. This is not always the same as the url 1889 * passed to WebViewClient.onPageStarted because although the load for 1890 * that url has begun, the current page may not have changed. 1891 * @return The url for the current page. 1892 */ 1893 public String getUrl() { 1894 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1895 return h != null ? h.getUrl() : null; 1896 } 1897 1898 /** 1899 * Get the original url for the current page. This is not always the same 1900 * as the url passed to WebViewClient.onPageStarted because although the 1901 * load for that url has begun, the current page may not have changed. 1902 * Also, there may have been redirects resulting in a different url to that 1903 * originally requested. 1904 * @return The url that was originally requested for the current page. 1905 */ 1906 public String getOriginalUrl() { 1907 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1908 return h != null ? h.getOriginalUrl() : null; 1909 } 1910 1911 /** 1912 * Get the title for the current page. This is the title of the current page 1913 * until WebViewClient.onReceivedTitle is called. 1914 * @return The title for the current page. 1915 */ 1916 public String getTitle() { 1917 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1918 return h != null ? h.getTitle() : null; 1919 } 1920 1921 /** 1922 * Get the favicon for the current page. This is the favicon of the current 1923 * page until WebViewClient.onReceivedIcon is called. 1924 * @return The favicon for the current page. 1925 */ 1926 public Bitmap getFavicon() { 1927 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1928 return h != null ? h.getFavicon() : null; 1929 } 1930 1931 /** 1932 * Get the progress for the current page. 1933 * @return The progress for the current page between 0 and 100. 1934 */ 1935 public int getProgress() { 1936 return mCallbackProxy.getProgress(); 1937 } 1938 1939 /** 1940 * @return the height of the HTML content. 1941 */ 1942 public int getContentHeight() { 1943 return mContentHeight; 1944 } 1945 1946 /** 1947 * Pause all layout, parsing, and javascript timers for all webviews. This 1948 * is a global requests, not restricted to just this webview. This can be 1949 * useful if the application has been paused. 1950 */ 1951 public void pauseTimers() { 1952 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 1953 } 1954 1955 /** 1956 * Resume all layout, parsing, and javascript timers for all webviews. 1957 * This will resume dispatching all timers. 1958 */ 1959 public void resumeTimers() { 1960 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 1961 } 1962 1963 /** 1964 * Call this to pause any extra processing associated with this view and 1965 * its associated DOM/plugins/javascript/etc. For example, if the view is 1966 * taken offscreen, this could be called to reduce unnecessary CPU and/or 1967 * network traffic. When the view is again "active", call onResume(). 1968 * 1969 * Note that this differs from pauseTimers(), which affects all views/DOMs 1970 * @hide 1971 */ 1972 public void onPause() { 1973 if (!mIsPaused) { 1974 mIsPaused = true; 1975 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 1976 } 1977 } 1978 1979 /** 1980 * Call this to balanace a previous call to onPause() 1981 * @hide 1982 */ 1983 public void onResume() { 1984 if (mIsPaused) { 1985 mIsPaused = false; 1986 mWebViewCore.sendMessage(EventHub.ON_RESUME); 1987 } 1988 } 1989 1990 /** 1991 * Returns true if the view is paused, meaning onPause() was called. Calling 1992 * onResume() sets the paused state back to false. 1993 * @hide 1994 */ 1995 public boolean isPaused() { 1996 return mIsPaused; 1997 } 1998 1999 /** 2000 * Call this to inform the view that memory is low so that it can 2001 * free any available memory. 2002 * @hide 2003 */ 2004 public void freeMemory() { 2005 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2006 } 2007 2008 /** 2009 * Clear the resource cache. Note that the cache is per-application, so 2010 * this will clear the cache for all WebViews used. 2011 * 2012 * @param includeDiskFiles If false, only the RAM cache is cleared. 2013 */ 2014 public void clearCache(boolean includeDiskFiles) { 2015 // Note: this really needs to be a static method as it clears cache for all 2016 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2017 // we can't make this static. 2018 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2019 includeDiskFiles ? 1 : 0, 0); 2020 } 2021 2022 /** 2023 * Make sure that clearing the form data removes the adapter from the 2024 * currently focused textfield if there is one. 2025 */ 2026 public void clearFormData() { 2027 if (inEditingMode()) { 2028 AutoCompleteAdapter adapter = null; 2029 mWebTextView.setAdapterCustom(adapter); 2030 } 2031 } 2032 2033 /** 2034 * Tell the WebView to clear its internal back/forward list. 2035 */ 2036 public void clearHistory() { 2037 mCallbackProxy.getBackForwardList().setClearPending(); 2038 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2039 } 2040 2041 /** 2042 * Clear the SSL preferences table stored in response to proceeding with SSL 2043 * certificate errors. 2044 */ 2045 public void clearSslPreferences() { 2046 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2047 } 2048 2049 /** 2050 * Return the WebBackForwardList for this WebView. This contains the 2051 * back/forward list for use in querying each item in the history stack. 2052 * This is a copy of the private WebBackForwardList so it contains only a 2053 * snapshot of the current state. Multiple calls to this method may return 2054 * different objects. The object returned from this method will not be 2055 * updated to reflect any new state. 2056 */ 2057 public WebBackForwardList copyBackForwardList() { 2058 return mCallbackProxy.getBackForwardList().clone(); 2059 } 2060 2061 /* 2062 * Highlight and scroll to the next occurance of String in findAll. 2063 * Wraps the page infinitely, and scrolls. Must be called after 2064 * calling findAll. 2065 * 2066 * @param forward Direction to search. 2067 */ 2068 public void findNext(boolean forward) { 2069 nativeFindNext(forward); 2070 } 2071 2072 /* 2073 * Find all instances of find on the page and highlight them. 2074 * @param find String to find. 2075 * @return int The number of occurances of the String "find" 2076 * that were found. 2077 */ 2078 public int findAll(String find) { 2079 mFindIsUp = true; 2080 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2081 invalidate(); 2082 return result; 2083 } 2084 2085 // Used to know whether the find dialog is open. Affects whether 2086 // or not we draw the highlights for matches. 2087 private boolean mFindIsUp; 2088 2089 /** 2090 * Return the first substring consisting of the address of a physical 2091 * location. Currently, only addresses in the United States are detected, 2092 * and consist of: 2093 * - a house number 2094 * - a street name 2095 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2096 * - a city name 2097 * - a state or territory, either spelled out or two-letter abbr. 2098 * - an optional 5 digit or 9 digit zip code. 2099 * 2100 * All names must be correctly capitalized, and the zip code, if present, 2101 * must be valid for the state. The street type must be a standard USPS 2102 * spelling or abbreviation. The state or territory must also be spelled 2103 * or abbreviated using USPS standards. The house number may not exceed 2104 * five digits. 2105 * @param addr The string to search for addresses. 2106 * 2107 * @return the address, or if no address is found, return null. 2108 */ 2109 public static String findAddress(String addr) { 2110 return findAddress(addr, false); 2111 } 2112 2113 /** 2114 * @hide 2115 * Return the first substring consisting of the address of a physical 2116 * location. Currently, only addresses in the United States are detected, 2117 * and consist of: 2118 * - a house number 2119 * - a street name 2120 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2121 * - a city name 2122 * - a state or territory, either spelled out or two-letter abbr. 2123 * - an optional 5 digit or 9 digit zip code. 2124 * 2125 * Names are optionally capitalized, and the zip code, if present, 2126 * must be valid for the state. The street type must be a standard USPS 2127 * spelling or abbreviation. The state or territory must also be spelled 2128 * or abbreviated using USPS standards. The house number may not exceed 2129 * five digits. 2130 * @param addr The string to search for addresses. 2131 * @param caseInsensitive addr Set to true to make search ignore case. 2132 * 2133 * @return the address, or if no address is found, return null. 2134 */ 2135 public static String findAddress(String addr, boolean caseInsensitive) { 2136 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2137 } 2138 2139 /* 2140 * Clear the highlighting surrounding text matches created by findAll. 2141 */ 2142 public void clearMatches() { 2143 mFindIsUp = false; 2144 nativeSetFindIsDown(); 2145 // Now that the dialog has been removed, ensure that we scroll to a 2146 // location that is not beyond the end of the page. 2147 pinScrollTo(mScrollX, mScrollY, false, 0); 2148 invalidate(); 2149 } 2150 2151 /** 2152 * Query the document to see if it contains any image references. The 2153 * message object will be dispatched with arg1 being set to 1 if images 2154 * were found and 0 if the document does not reference any images. 2155 * @param response The message that will be dispatched with the result. 2156 */ 2157 public void documentHasImages(Message response) { 2158 if (response == null) { 2159 return; 2160 } 2161 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2162 } 2163 2164 @Override 2165 public void computeScroll() { 2166 if (mScroller.computeScrollOffset()) { 2167 int oldX = mScrollX; 2168 int oldY = mScrollY; 2169 mScrollX = mScroller.getCurrX(); 2170 mScrollY = mScroller.getCurrY(); 2171 postInvalidate(); // So we draw again 2172 if (oldX != mScrollX || oldY != mScrollY) { 2173 // as onScrollChanged() is not called, sendOurVisibleRect() 2174 // needs to be call explicitly 2175 sendOurVisibleRect(); 2176 } 2177 } else { 2178 super.computeScroll(); 2179 } 2180 } 2181 2182 private static int computeDuration(int dx, int dy) { 2183 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2184 int duration = distance * 1000 / STD_SPEED; 2185 return Math.min(duration, MAX_DURATION); 2186 } 2187 2188 // helper to pin the scrollBy parameters (already in view coordinates) 2189 // returns true if the scroll was changed 2190 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2191 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2192 } 2193 2194 // helper to pin the scrollTo parameters (already in view coordinates) 2195 // returns true if the scroll was changed 2196 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2197 x = pinLocX(x); 2198 y = pinLocY(y); 2199 int dx = x - mScrollX; 2200 int dy = y - mScrollY; 2201 2202 if ((dx | dy) == 0) { 2203 return false; 2204 } 2205 2206 if (true && animate) { 2207 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2208 2209 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2210 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2211 invalidate(); 2212 } else { 2213 mScroller.abortAnimation(); // just in case 2214 scrollTo(x, y); 2215 } 2216 return true; 2217 } 2218 2219 // Scale from content to view coordinates, and pin. 2220 // Also called by jni webview.cpp 2221 private void setContentScrollBy(int cx, int cy, boolean animate) { 2222 if (mDrawHistory) { 2223 // disallow WebView to change the scroll position as History Picture 2224 // is used in the view system. 2225 // TODO: as we switchOutDrawHistory when trackball or navigation 2226 // keys are hit, this should be safe. Right? 2227 return; 2228 } 2229 cx = contentToView(cx); 2230 cy = contentToView(cy); 2231 if (mHeightCanMeasure) { 2232 // move our visible rect according to scroll request 2233 if (cy != 0) { 2234 Rect tempRect = new Rect(); 2235 calcOurVisibleRect(tempRect); 2236 tempRect.offset(cx, cy); 2237 requestRectangleOnScreen(tempRect); 2238 } 2239 // FIXME: We scroll horizontally no matter what because currently 2240 // ScrollView and ListView will not scroll horizontally. 2241 // FIXME: Why do we only scroll horizontally if there is no 2242 // vertical scroll? 2243// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2244 if (cy == 0 && cx != 0) { 2245 pinScrollBy(cx, 0, animate, 0); 2246 } 2247 } else { 2248 pinScrollBy(cx, cy, animate, 0); 2249 } 2250 } 2251 2252 // scale from content to view coordinates, and pin 2253 // return true if pin caused the final x/y different than the request cx/cy; 2254 // return false if the view scroll to the exact position as it is requested. 2255 private boolean setContentScrollTo(int cx, int cy) { 2256 if (mDrawHistory) { 2257 // disallow WebView to change the scroll position as History Picture 2258 // is used in the view system. 2259 // One known case where this is called is that WebCore tries to 2260 // restore the scroll position. As history Picture already uses the 2261 // saved scroll position, it is ok to skip this. 2262 return false; 2263 } 2264 int vx = contentToView(cx); 2265 int vy = contentToView(cy); 2266// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2267// vx + " " + vy + "]"); 2268 pinScrollTo(vx, vy, false, 0); 2269 if (mScrollX != vx || mScrollY != vy) { 2270 return true; 2271 } else { 2272 return false; 2273 } 2274 } 2275 2276 // scale from content to view coordinates, and pin 2277 private void spawnContentScrollTo(int cx, int cy) { 2278 if (mDrawHistory) { 2279 // disallow WebView to change the scroll position as History Picture 2280 // is used in the view system. 2281 return; 2282 } 2283 int vx = contentToView(cx); 2284 int vy = contentToView(cy); 2285 pinScrollTo(vx, vy, true, 0); 2286 } 2287 2288 /** 2289 * These are from webkit, and are in content coordinate system (unzoomed) 2290 */ 2291 private void contentSizeChanged(boolean updateLayout) { 2292 // suppress 0,0 since we usually see real dimensions soon after 2293 // this avoids drawing the prev content in a funny place. If we find a 2294 // way to consolidate these notifications, this check may become 2295 // obsolete 2296 if ((mContentWidth | mContentHeight) == 0) { 2297 return; 2298 } 2299 2300 if (mHeightCanMeasure) { 2301 if (getMeasuredHeight() != contentToView(mContentHeight) 2302 && updateLayout) { 2303 requestLayout(); 2304 } 2305 } else if (mWidthCanMeasure) { 2306 if (getMeasuredWidth() != contentToView(mContentWidth) 2307 && updateLayout) { 2308 requestLayout(); 2309 } 2310 } else { 2311 // If we don't request a layout, try to send our view size to the 2312 // native side to ensure that WebCore has the correct dimensions. 2313 sendViewSizeZoom(); 2314 } 2315 } 2316 2317 /** 2318 * Set the WebViewClient that will receive various notifications and 2319 * requests. This will replace the current handler. 2320 * @param client An implementation of WebViewClient. 2321 */ 2322 public void setWebViewClient(WebViewClient client) { 2323 mCallbackProxy.setWebViewClient(client); 2324 } 2325 2326 /** 2327 * Register the interface to be used when content can not be handled by 2328 * the rendering engine, and should be downloaded instead. This will replace 2329 * the current handler. 2330 * @param listener An implementation of DownloadListener. 2331 */ 2332 public void setDownloadListener(DownloadListener listener) { 2333 mCallbackProxy.setDownloadListener(listener); 2334 } 2335 2336 /** 2337 * Set the chrome handler. This is an implementation of WebChromeClient for 2338 * use in handling Javascript dialogs, favicons, titles, and the progress. 2339 * This will replace the current handler. 2340 * @param client An implementation of WebChromeClient. 2341 */ 2342 public void setWebChromeClient(WebChromeClient client) { 2343 mCallbackProxy.setWebChromeClient(client); 2344 } 2345 2346 /** 2347 * Gets the chrome handler. 2348 * @return the current WebChromeClient instance. 2349 * 2350 * @hide API council approval. 2351 */ 2352 public WebChromeClient getWebChromeClient() { 2353 return mCallbackProxy.getWebChromeClient(); 2354 } 2355 2356 /** 2357 * Set the Picture listener. This is an interface used to receive 2358 * notifications of a new Picture. 2359 * @param listener An implementation of WebView.PictureListener. 2360 */ 2361 public void setPictureListener(PictureListener listener) { 2362 mPictureListener = listener; 2363 } 2364 2365 /** 2366 * {@hide} 2367 */ 2368 /* FIXME: Debug only! Remove for SDK! */ 2369 public void externalRepresentation(Message callback) { 2370 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2371 } 2372 2373 /** 2374 * {@hide} 2375 */ 2376 /* FIXME: Debug only! Remove for SDK! */ 2377 public void documentAsText(Message callback) { 2378 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2379 } 2380 2381 /** 2382 * Use this function to bind an object to Javascript so that the 2383 * methods can be accessed from Javascript. 2384 * <p><strong>IMPORTANT:</strong> 2385 * <ul> 2386 * <li> Using addJavascriptInterface() allows JavaScript to control your 2387 * application. This can be a very useful feature or a dangerous security 2388 * issue. When the HTML in the WebView is untrustworthy (for example, part 2389 * or all of the HTML is provided by some person or process), then an 2390 * attacker could inject HTML that will execute your code and possibly any 2391 * code of the attacker's choosing.<br> 2392 * Do not use addJavascriptInterface() unless all of the HTML in this 2393 * WebView was written by you.</li> 2394 * <li> The Java object that is bound runs in another thread and not in 2395 * the thread that it was constructed in.</li> 2396 * </ul></p> 2397 * @param obj The class instance to bind to Javascript 2398 * @param interfaceName The name to used to expose the class in Javascript 2399 */ 2400 public void addJavascriptInterface(Object obj, String interfaceName) { 2401 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2402 arg.mObject = obj; 2403 arg.mInterfaceName = interfaceName; 2404 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2405 } 2406 2407 /** 2408 * Return the WebSettings object used to control the settings for this 2409 * WebView. 2410 * @return A WebSettings object that can be used to control this WebView's 2411 * settings. 2412 */ 2413 public WebSettings getSettings() { 2414 return mWebViewCore.getSettings(); 2415 } 2416 2417 /** 2418 * Return the list of currently loaded plugins. 2419 * @return The list of currently loaded plugins. 2420 */ 2421 public static synchronized PluginList getPluginList() { 2422 if (sPluginList == null) { 2423 sPluginList = new PluginList(); 2424 } 2425 return sPluginList; 2426 } 2427 2428 /** 2429 * TODO: need to add @Deprecated 2430 */ 2431 public void refreshPlugins(boolean reloadOpenPages) { 2432 PluginManager.getInstance(mContext).refreshPlugins(reloadOpenPages); 2433 } 2434 2435 //------------------------------------------------------------------------- 2436 // Override View methods 2437 //------------------------------------------------------------------------- 2438 2439 @Override 2440 protected void finalize() throws Throwable { 2441 destroy(); 2442 } 2443 2444 @Override 2445 protected void onDraw(Canvas canvas) { 2446 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2447 if (mNativeClass == 0) { 2448 return; 2449 } 2450 if (mWebViewCore.mEndScaleZoom) { 2451 mWebViewCore.mEndScaleZoom = false; 2452 if (mTouchMode >= FIRST_SCROLL_ZOOM 2453 && mTouchMode <= LAST_SCROLL_ZOOM) { 2454 setHorizontalScrollBarEnabled(true); 2455 setVerticalScrollBarEnabled(true); 2456 mTouchMode = TOUCH_DONE_MODE; 2457 } 2458 } 2459 int sc = canvas.save(); 2460 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 2461 scrollZoomDraw(canvas); 2462 } else { 2463 // Update the buttons in the picture, so when we draw the picture 2464 // to the screen, they are in the correct state. 2465 // Tell the native side if user is a) touching the screen, 2466 // b) pressing the trackball down, or c) pressing the enter key 2467 // If the cursor is on a button, we need to draw it in the pressed 2468 // state. 2469 // If mNativeClass is 0, we should not reach here, so we do not 2470 // need to check it again. 2471 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2472 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2473 || mTrackballDown || mGotCenterDown, false); 2474 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2475 } 2476 canvas.restoreToCount(sc); 2477 2478 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2479 invalidate(); 2480 } 2481 } 2482 2483 @Override 2484 public void setLayoutParams(ViewGroup.LayoutParams params) { 2485 if (params.height == LayoutParams.WRAP_CONTENT) { 2486 mWrapContent = true; 2487 } 2488 super.setLayoutParams(params); 2489 } 2490 2491 @Override 2492 public boolean performLongClick() { 2493 if (inEditingMode()) { 2494 return mWebTextView.performLongClick(); 2495 } else { 2496 return super.performLongClick(); 2497 } 2498 } 2499 2500 private void drawCoreAndCursorRing(Canvas canvas, int color, 2501 boolean drawCursorRing) { 2502 if (mDrawHistory) { 2503 canvas.scale(mActualScale, mActualScale); 2504 canvas.drawPicture(mHistoryPicture); 2505 return; 2506 } 2507 2508 boolean animateZoom = mZoomScale != 0; 2509 boolean animateScroll = !mScroller.isFinished() 2510 || mVelocityTracker != null; 2511 if (animateZoom) { 2512 float zoomScale; 2513 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 2514 if (interval < ZOOM_ANIMATION_LENGTH) { 2515 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 2516 zoomScale = 1.0f / (mInvInitialZoomScale 2517 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 2518 invalidate(); 2519 } else { 2520 zoomScale = mZoomScale; 2521 // set mZoomScale to be 0 as we have done animation 2522 mZoomScale = 0; 2523 } 2524 float scale = (mActualScale - zoomScale) * mInvActualScale; 2525 float tx = scale * (mZoomCenterX + mScrollX); 2526 float ty = scale * (mZoomCenterY + mScrollY); 2527 2528 // this block pins the translate to "legal" bounds. This makes the 2529 // animation a bit non-obvious, but it means we won't pop when the 2530 // "real" zoom takes effect 2531 if (true) { 2532 // canvas.translate(mScrollX, mScrollY); 2533 tx -= mScrollX; 2534 ty -= mScrollY; 2535 tx = -pinLoc(-Math.round(tx), getViewWidth(), Math 2536 .round(mContentWidth * zoomScale)); 2537 ty = -pinLoc(-Math.round(ty), getViewHeight(), Math 2538 .round(mContentHeight * zoomScale)); 2539 tx += mScrollX; 2540 ty += mScrollY; 2541 } 2542 canvas.translate(tx, ty); 2543 canvas.scale(zoomScale, zoomScale); 2544 } else { 2545 canvas.scale(mActualScale, mActualScale); 2546 } 2547 2548 mWebViewCore.drawContentPicture(canvas, color, animateZoom, 2549 animateScroll); 2550 2551 if (mNativeClass == 0) return; 2552 if (mShiftIsPressed) { 2553 if (mTouchSelection) { 2554 nativeDrawSelectionRegion(canvas); 2555 } else { 2556 nativeDrawSelection(canvas, mSelectX, mSelectY, 2557 mExtendSelection); 2558 } 2559 } else if (drawCursorRing) { 2560 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 2561 mTouchMode = TOUCH_SHORTPRESS_MODE; 2562 HitTestResult hitTest = getHitTestResult(); 2563 if (hitTest != null && 2564 hitTest.mType != HitTestResult.UNKNOWN_TYPE) { 2565 mPrivateHandler.sendMessageDelayed(mPrivateHandler 2566 .obtainMessage(SWITCH_TO_LONGPRESS), 2567 LONG_PRESS_TIMEOUT); 2568 } 2569 } 2570 nativeDrawCursorRing(canvas); 2571 } 2572 // When the FindDialog is up, only draw the matches if we are not in 2573 // the process of scrolling them into view. 2574 if (mFindIsUp && !animateScroll) { 2575 nativeDrawMatches(canvas); 2576 } 2577 } 2578 2579 private float scrollZoomGridScale(float invScale) { 2580 float griddedInvScale = (int) (invScale * SCROLL_ZOOM_GRID) 2581 / (float) SCROLL_ZOOM_GRID; 2582 return 1.0f / griddedInvScale; 2583 } 2584 2585 private float scrollZoomX(float scale) { 2586 int width = getViewWidth(); 2587 float maxScrollZoomX = mContentWidth * scale - width; 2588 int maxX = mContentWidth - width; 2589 return -(maxScrollZoomX > 0 ? mZoomScrollX * maxScrollZoomX / maxX 2590 : maxScrollZoomX / 2); 2591 } 2592 2593 private float scrollZoomY(float scale) { 2594 int height = getViewHeight(); 2595 float maxScrollZoomY = mContentHeight * scale - height; 2596 int maxY = mContentHeight - height; 2597 return -(maxScrollZoomY > 0 ? mZoomScrollY * maxScrollZoomY / maxY 2598 : maxScrollZoomY / 2); 2599 } 2600 2601 private void drawMagnifyFrame(Canvas canvas, Rect frame, Paint paint) { 2602 final float ADORNMENT_LEN = 16.0f; 2603 float width = frame.width(); 2604 float height = frame.height(); 2605 Path path = new Path(); 2606 path.moveTo(-ADORNMENT_LEN, -ADORNMENT_LEN); 2607 path.lineTo(0, 0); 2608 path.lineTo(width, 0); 2609 path.lineTo(width + ADORNMENT_LEN, -ADORNMENT_LEN); 2610 path.moveTo(-ADORNMENT_LEN, height + ADORNMENT_LEN); 2611 path.lineTo(0, height); 2612 path.lineTo(width, height); 2613 path.lineTo(width + ADORNMENT_LEN, height + ADORNMENT_LEN); 2614 path.moveTo(0, 0); 2615 path.lineTo(0, height); 2616 path.moveTo(width, 0); 2617 path.lineTo(width, height); 2618 path.offset(frame.left, frame.top); 2619 canvas.drawPath(path, paint); 2620 } 2621 2622 // Returns frame surrounding magified portion of screen while 2623 // scroll-zoom is enabled. The frame is also used to center the 2624 // zoom-in zoom-out points at the start and end of the animation. 2625 private Rect scrollZoomFrame(int width, int height, float halfScale) { 2626 Rect scrollFrame = new Rect(); 2627 scrollFrame.set(mZoomScrollX, mZoomScrollY, 2628 mZoomScrollX + width, mZoomScrollY + height); 2629 if (mContentWidth * mZoomScrollLimit < width) { 2630 float scale = zoomFrameScaleX(width, halfScale, 1.0f); 2631 float offsetX = (width * scale - width) * 0.5f; 2632 scrollFrame.left -= offsetX; 2633 scrollFrame.right += offsetX; 2634 } 2635 if (mContentHeight * mZoomScrollLimit < height) { 2636 float scale = zoomFrameScaleY(height, halfScale, 1.0f); 2637 float offsetY = (height * scale - height) * 0.5f; 2638 scrollFrame.top -= offsetY; 2639 scrollFrame.bottom += offsetY; 2640 } 2641 return scrollFrame; 2642 } 2643 2644 private float zoomFrameScaleX(int width, float halfScale, float noScale) { 2645 // mContentWidth > width > mContentWidth * mZoomScrollLimit 2646 if (mContentWidth <= width) { 2647 return halfScale; 2648 } 2649 float part = (width - mContentWidth * mZoomScrollLimit) 2650 / (width * (1 - mZoomScrollLimit)); 2651 return halfScale * part + noScale * (1.0f - part); 2652 } 2653 2654 private float zoomFrameScaleY(int height, float halfScale, float noScale) { 2655 if (mContentHeight <= height) { 2656 return halfScale; 2657 } 2658 float part = (height - mContentHeight * mZoomScrollLimit) 2659 / (height * (1 - mZoomScrollLimit)); 2660 return halfScale * part + noScale * (1.0f - part); 2661 } 2662 2663 private float scrollZoomMagScale(float invScale) { 2664 return (invScale * 2 + mInvActualScale) / 3; 2665 } 2666 2667 private void scrollZoomDraw(Canvas canvas) { 2668 float invScale = mZoomScrollInvLimit; 2669 int elapsed = 0; 2670 if (mTouchMode != SCROLL_ZOOM_OUT) { 2671 elapsed = (int) Math.min(System.currentTimeMillis() 2672 - mZoomScrollStart, SCROLL_ZOOM_DURATION); 2673 float transitionScale = (mZoomScrollInvLimit - mInvActualScale) 2674 * elapsed / SCROLL_ZOOM_DURATION; 2675 if (mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 2676 invScale = mInvActualScale + transitionScale; 2677 } else { /* if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) */ 2678 invScale = mZoomScrollInvLimit - transitionScale; 2679 } 2680 } 2681 float scale = scrollZoomGridScale(invScale); 2682 invScale = 1.0f / scale; 2683 int width = getViewWidth(); 2684 int height = getViewHeight(); 2685 float halfScale = scrollZoomMagScale(invScale); 2686 Rect scrollFrame = scrollZoomFrame(width, height, halfScale); 2687 if (elapsed == SCROLL_ZOOM_DURATION) { 2688 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 2689 setHorizontalScrollBarEnabled(true); 2690 setVerticalScrollBarEnabled(true); 2691 rebuildWebTextView(); 2692 scrollTo((int) (scrollFrame.centerX() * mActualScale) 2693 - (width >> 1), (int) (scrollFrame.centerY() 2694 * mActualScale) - (height >> 1)); 2695 mTouchMode = TOUCH_DONE_MODE; 2696 } else { 2697 mTouchMode = SCROLL_ZOOM_OUT; 2698 } 2699 } 2700 float newX = scrollZoomX(scale); 2701 float newY = scrollZoomY(scale); 2702 if (DebugFlags.WEB_VIEW) { 2703 Log.v(LOGTAG, "scrollZoomDraw scale=" + scale + " + (" + newX 2704 + ", " + newY + ") mZoomScroll=(" + mZoomScrollX + ", " 2705 + mZoomScrollY + ")" + " invScale=" + invScale + " scale=" 2706 + scale); 2707 } 2708 canvas.translate(newX, newY); 2709 canvas.scale(scale, scale); 2710 boolean animating = mTouchMode != SCROLL_ZOOM_OUT; 2711 if (mDrawHistory) { 2712 int sc = canvas.save(Canvas.CLIP_SAVE_FLAG); 2713 Rect clip = new Rect(0, 0, mHistoryPicture.getWidth(), 2714 mHistoryPicture.getHeight()); 2715 canvas.clipRect(clip, Region.Op.DIFFERENCE); 2716 canvas.drawColor(mBackgroundColor); 2717 canvas.restoreToCount(sc); 2718 canvas.drawPicture(mHistoryPicture); 2719 } else { 2720 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2721 animating, true); 2722 } 2723 if (mTouchMode == TOUCH_DONE_MODE) { 2724 return; 2725 } 2726 Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); 2727 paint.setStyle(Paint.Style.STROKE); 2728 paint.setStrokeWidth(30.0f); 2729 paint.setARGB(0x50, 0, 0, 0); 2730 int maxX = mContentWidth - width; 2731 int maxY = mContentHeight - height; 2732 if (true) { // experiment: draw hint to place finger off magnify area 2733 drawMagnifyFrame(canvas, scrollFrame, paint); 2734 } else { 2735 canvas.drawRect(scrollFrame, paint); 2736 } 2737 int sc = canvas.save(); 2738 canvas.clipRect(scrollFrame); 2739 float halfX = (float) mZoomScrollX / maxX; 2740 if (mContentWidth * mZoomScrollLimit < width) { 2741 halfX = zoomFrameScaleX(width, 0.5f, halfX); 2742 } 2743 float halfY = (float) mZoomScrollY / maxY; 2744 if (mContentHeight * mZoomScrollLimit < height) { 2745 halfY = zoomFrameScaleY(height, 0.5f, halfY); 2746 } 2747 canvas.scale(halfScale, halfScale, mZoomScrollX + width * halfX 2748 , mZoomScrollY + height * halfY); 2749 if (DebugFlags.WEB_VIEW) { 2750 Log.v(LOGTAG, "scrollZoomDraw halfScale=" + halfScale + " w/h=(" 2751 + width + ", " + height + ") half=(" + halfX + ", " 2752 + halfY + ")"); 2753 } 2754 if (mDrawHistory) { 2755 canvas.drawPicture(mHistoryPicture); 2756 } else { 2757 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2758 animating, false); 2759 } 2760 canvas.restoreToCount(sc); 2761 if (mTouchMode != SCROLL_ZOOM_OUT) { 2762 invalidate(); 2763 } 2764 } 2765 2766 private void zoomScrollTap(float x, float y) { 2767 float scale = scrollZoomGridScale(mZoomScrollInvLimit); 2768 float left = scrollZoomX(scale); 2769 float top = scrollZoomY(scale); 2770 int width = getViewWidth(); 2771 int height = getViewHeight(); 2772 x -= width * scale / 2; 2773 y -= height * scale / 2; 2774 mZoomScrollX = Math.min(mContentWidth - width 2775 , Math.max(0, (int) ((x - left) / scale))); 2776 mZoomScrollY = Math.min(mContentHeight - height 2777 , Math.max(0, (int) ((y - top) / scale))); 2778 if (DebugFlags.WEB_VIEW) { 2779 Log.v(LOGTAG, "zoomScrollTap scale=" + scale + " + (" + left 2780 + ", " + top + ") mZoomScroll=(" + mZoomScrollX + ", " 2781 + mZoomScrollY + ")" + " x=" + x + " y=" + y); 2782 } 2783 } 2784 2785 /** 2786 * @hide 2787 */ 2788 public boolean canZoomScrollOut() { 2789 if (mContentWidth == 0 || mContentHeight == 0) { 2790 return false; 2791 } 2792 int width = getViewWidth(); 2793 int height = getViewHeight(); 2794 float x = (float) width / (float) mContentWidth; 2795 float y = (float) height / (float) mContentHeight; 2796 mZoomScrollLimit = Math.max(DEFAULT_MIN_ZOOM_SCALE, Math.min(x, y)); 2797 mZoomScrollInvLimit = 1.0f / mZoomScrollLimit; 2798 if (DebugFlags.WEB_VIEW) { 2799 Log.v(LOGTAG, "canZoomScrollOut" 2800 + " mInvActualScale=" + mInvActualScale 2801 + " mZoomScrollLimit=" + mZoomScrollLimit 2802 + " mZoomScrollInvLimit=" + mZoomScrollInvLimit 2803 + " mContentWidth=" + mContentWidth 2804 + " mContentHeight=" + mContentHeight 2805 ); 2806 } 2807 // don't zoom out unless magnify area is at least half as wide 2808 // or tall as content 2809 float limit = mZoomScrollLimit * 2; 2810 return mContentWidth >= width * limit 2811 || mContentHeight >= height * limit; 2812 } 2813 2814 private void startZoomScrollOut() { 2815 setHorizontalScrollBarEnabled(false); 2816 setVerticalScrollBarEnabled(false); 2817 if (getSettings().getBuiltInZoomControls()) { 2818 if (mZoomButtonsController.isVisible()) { 2819 mZoomButtonsController.setVisible(false); 2820 } 2821 } else { 2822 if (mZoomControlRunnable != null) { 2823 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 2824 } 2825 if (mZoomControls != null) { 2826 mZoomControls.hide(); 2827 } 2828 } 2829 int width = getViewWidth(); 2830 int height = getViewHeight(); 2831 int halfW = width >> 1; 2832 mLastTouchX = halfW; 2833 int halfH = height >> 1; 2834 mLastTouchY = halfH; 2835 mScroller.abortAnimation(); 2836 mZoomScrollStart = System.currentTimeMillis(); 2837 Rect zoomFrame = scrollZoomFrame(width, height 2838 , scrollZoomMagScale(mZoomScrollInvLimit)); 2839 mZoomScrollX = Math.max(0, (int) ((mScrollX + halfW) * mInvActualScale) 2840 - (zoomFrame.width() >> 1)); 2841 mZoomScrollY = Math.max(0, (int) ((mScrollY + halfH) * mInvActualScale) 2842 - (zoomFrame.height() >> 1)); 2843 scrollTo(0, 0); // triggers inval, starts animation 2844 clearTextEntry(); 2845 if (DebugFlags.WEB_VIEW) { 2846 Log.v(LOGTAG, "startZoomScrollOut mZoomScroll=(" 2847 + mZoomScrollX + ", " + mZoomScrollY +")"); 2848 } 2849 } 2850 2851 /** 2852 * @hide 2853 */ 2854 public void zoomScrollOut() { 2855 if (canZoomScrollOut() == false) { 2856 mTouchMode = TOUCH_DONE_MODE; 2857 return; 2858 } 2859 startZoomScrollOut(); 2860 mTouchMode = SCROLL_ZOOM_ANIMATION_OUT; 2861 invalidate(); 2862 } 2863 2864 private void moveZoomScrollWindow(float x, float y) { 2865 if (Math.abs(x - mLastZoomScrollRawX) < 1.5f 2866 && Math.abs(y - mLastZoomScrollRawY) < 1.5f) { 2867 return; 2868 } 2869 mLastZoomScrollRawX = x; 2870 mLastZoomScrollRawY = y; 2871 int oldX = mZoomScrollX; 2872 int oldY = mZoomScrollY; 2873 int width = getViewWidth(); 2874 int height = getViewHeight(); 2875 int maxZoomX = mContentWidth - width; 2876 if (maxZoomX > 0) { 2877 int maxScreenX = width - (int) Math.ceil(width 2878 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 2879 if (DebugFlags.WEB_VIEW) { 2880 Log.v(LOGTAG, "moveZoomScrollWindow-X" 2881 + " maxScreenX=" + maxScreenX + " width=" + width 2882 + " mZoomScrollLimit=" + mZoomScrollLimit + " x=" + x); 2883 } 2884 x += maxScreenX * mLastScrollX / maxZoomX - mLastTouchX; 2885 x *= Math.max(maxZoomX / maxScreenX, mZoomScrollInvLimit); 2886 mZoomScrollX = Math.max(0, Math.min(maxZoomX, (int) x)); 2887 } 2888 int maxZoomY = mContentHeight - height; 2889 if (maxZoomY > 0) { 2890 int maxScreenY = height - (int) Math.ceil(height 2891 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 2892 if (DebugFlags.WEB_VIEW) { 2893 Log.v(LOGTAG, "moveZoomScrollWindow-Y" 2894 + " maxScreenY=" + maxScreenY + " height=" + height 2895 + " mZoomScrollLimit=" + mZoomScrollLimit + " y=" + y); 2896 } 2897 y += maxScreenY * mLastScrollY / maxZoomY - mLastTouchY; 2898 y *= Math.max(maxZoomY / maxScreenY, mZoomScrollInvLimit); 2899 mZoomScrollY = Math.max(0, Math.min(maxZoomY, (int) y)); 2900 } 2901 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 2902 invalidate(); 2903 } 2904 if (DebugFlags.WEB_VIEW) { 2905 Log.v(LOGTAG, "moveZoomScrollWindow" 2906 + " scrollTo=(" + mZoomScrollX + ", " + mZoomScrollY + ")" 2907 + " mLastTouch=(" + mLastTouchX + ", " + mLastTouchY + ")" 2908 + " maxZoom=(" + maxZoomX + ", " + maxZoomY + ")" 2909 + " last=("+mLastScrollX+", "+mLastScrollY+")" 2910 + " x=" + x + " y=" + y); 2911 } 2912 } 2913 2914 private void setZoomScrollIn() { 2915 mZoomScrollStart = System.currentTimeMillis(); 2916 } 2917 2918 private float mZoomScrollLimit; 2919 private float mZoomScrollInvLimit; 2920 private int mLastScrollX; 2921 private int mLastScrollY; 2922 private long mZoomScrollStart; 2923 private int mZoomScrollX; 2924 private int mZoomScrollY; 2925 private float mLastZoomScrollRawX = -1000.0f; 2926 private float mLastZoomScrollRawY = -1000.0f; 2927 // The zoomed scale varies from 1.0 to DEFAULT_MIN_ZOOM_SCALE == 0.25. 2928 // The zoom animation duration SCROLL_ZOOM_DURATION == 0.5. 2929 // Two pressures compete for gridding; a high frame rate (e.g. 20 fps) 2930 // and minimizing font cache allocations (fewer frames is better). 2931 // A SCROLL_ZOOM_GRID of 6 permits about 20 zoom levels over 0.5 seconds: 2932 // the inverse of: 1.0, 1.16, 1.33, 1.5, 1.67, 1.84, 2.0, etc. to 4.0 2933 private static final int SCROLL_ZOOM_GRID = 6; 2934 private static final int SCROLL_ZOOM_DURATION = 500; 2935 // Make it easier to get to the bottom of a document by reserving a 32 2936 // pixel buffer, for when the starting drag is a bit below the bottom of 2937 // the magnify frame. 2938 private static final int SCROLL_ZOOM_FINGER_BUFFER = 32; 2939 2940 // draw history 2941 private boolean mDrawHistory = false; 2942 private Picture mHistoryPicture = null; 2943 private int mHistoryWidth = 0; 2944 private int mHistoryHeight = 0; 2945 2946 // Only check the flag, can be called from WebCore thread 2947 boolean drawHistory() { 2948 return mDrawHistory; 2949 } 2950 2951 // Should only be called in UI thread 2952 void switchOutDrawHistory() { 2953 if (null == mWebViewCore) return; // CallbackProxy may trigger this 2954 if (mDrawHistory && mWebViewCore.pictureReady()) { 2955 mDrawHistory = false; 2956 invalidate(); 2957 int oldScrollX = mScrollX; 2958 int oldScrollY = mScrollY; 2959 mScrollX = pinLocX(mScrollX); 2960 mScrollY = pinLocY(mScrollY); 2961 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 2962 mUserScroll = false; 2963 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 2964 oldScrollY); 2965 } 2966 sendOurVisibleRect(); 2967 } 2968 } 2969 2970 WebViewCore.CursorData cursorData() { 2971 WebViewCore.CursorData result = new WebViewCore.CursorData(); 2972 result.mMoveGeneration = nativeMoveGeneration(); 2973 result.mFrame = nativeCursorFramePointer(); 2974 Point position = nativeCursorPosition(); 2975 result.mX = position.x; 2976 result.mY = position.y; 2977 return result; 2978 } 2979 2980 /** 2981 * Delete text from start to end in the focused textfield. If there is no 2982 * focus, or if start == end, silently fail. If start and end are out of 2983 * order, swap them. 2984 * @param start Beginning of selection to delete. 2985 * @param end End of selection to delete. 2986 */ 2987 /* package */ void deleteSelection(int start, int end) { 2988 mTextGeneration++; 2989 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, start, end); 2990 } 2991 2992 /** 2993 * Set the selection to (start, end) in the focused textfield. If start and 2994 * end are out of order, swap them. 2995 * @param start Beginning of selection. 2996 * @param end End of selection. 2997 */ 2998 /* package */ void setSelection(int start, int end) { 2999 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3000 } 3001 3002 // Called by JNI when a touch event puts a textfield into focus. 3003 private void displaySoftKeyboard() { 3004 InputMethodManager imm = (InputMethodManager) 3005 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3006 imm.showSoftInput(mWebTextView, 0); 3007 mWebTextView.enableScrollOnScreen(true); 3008 // Now we need to fake a touch event to place the cursor where the 3009 // user touched. 3010 AbsoluteLayout.LayoutParams lp = (AbsoluteLayout.LayoutParams) 3011 mWebTextView.getLayoutParams(); 3012 if (lp != null) { 3013 // Take the last touch and adjust for the location of the 3014 // WebTextView. 3015 float x = mLastTouchX + (float) (mScrollX - lp.x); 3016 float y = mLastTouchY + (float) (mScrollY - lp.y); 3017 mWebTextView.fakeTouchEvent(x, y); 3018 } 3019 } 3020 3021 /* 3022 * This method checks the current focus and cursor and potentially rebuilds 3023 * mWebTextView to have the appropriate properties, such as password, 3024 * multiline, and what text it contains. It also removes it if necessary. 3025 */ 3026 private void rebuildWebTextView() { 3027 // If the WebView does not have focus, do nothing until it gains focus. 3028 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus()) 3029 || (mTouchMode >= FIRST_SCROLL_ZOOM 3030 && mTouchMode <= LAST_SCROLL_ZOOM)) { 3031 return; 3032 } 3033 boolean alreadyThere = inEditingMode(); 3034 // inEditingMode can only return true if mWebTextView is non-null, 3035 // so we can safely call remove() if (alreadyThere) 3036 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3037 if (alreadyThere) { 3038 mWebTextView.remove(); 3039 } 3040 return; 3041 } 3042 // At this point, we know we have found an input field, so go ahead 3043 // and create the WebTextView if necessary. 3044 if (mWebTextView == null) { 3045 mWebTextView = new WebTextView(mContext, WebView.this); 3046 // Initialize our generation number. 3047 mTextGeneration = 0; 3048 } 3049 mWebTextView.setTextSize(contentToView(nativeFocusCandidateTextSize())); 3050 Rect visibleRect = new Rect(); 3051 calcOurContentVisibleRect(visibleRect); 3052 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3053 // should be in content coordinates. 3054 Rect bounds = nativeFocusCandidateNodeBounds(); 3055 if (!Rect.intersects(bounds, visibleRect)) { 3056 // Node is not on screen, so do not bother. 3057 return; 3058 } 3059 String text = nativeFocusCandidateText(); 3060 int nodePointer = nativeFocusCandidatePointer(); 3061 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3062 // It is possible that we have the same textfield, but it has moved, 3063 // i.e. In the case of opening/closing the screen. 3064 // In that case, we need to set the dimensions, but not the other 3065 // aspects. 3066 // We also need to restore the selection, which gets wrecked by 3067 // calling setTextEntryRect. 3068 Spannable spannable = (Spannable) mWebTextView.getText(); 3069 int start = Selection.getSelectionStart(spannable); 3070 int end = Selection.getSelectionEnd(spannable); 3071 // If the text has been changed by webkit, update it. However, if 3072 // there has been more UI text input, ignore it. We will receive 3073 // another update when that text is recognized. 3074 if (text != null && !text.equals(spannable.toString()) 3075 && nativeTextGeneration() == mTextGeneration) { 3076 mWebTextView.setTextAndKeepSelection(text); 3077 } else { 3078 Selection.setSelection(spannable, start, end); 3079 } 3080 } else { 3081 Rect vBox = contentToView(bounds); 3082 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3083 vBox.height()); 3084 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3085 Gravity.RIGHT : Gravity.NO_GRAVITY); 3086 // this needs to be called before update adapter thread starts to 3087 // ensure the mWebTextView has the same node pointer 3088 mWebTextView.setNodePointer(nodePointer); 3089 int maxLength = -1; 3090 boolean isTextField = nativeFocusCandidateIsTextField(); 3091 if (isTextField) { 3092 maxLength = nativeFocusCandidateMaxLength(); 3093 String name = nativeFocusCandidateName(); 3094 if (mWebViewCore.getSettings().getSaveFormData() 3095 && name != null) { 3096 Message update = mPrivateHandler.obtainMessage( 3097 REQUEST_FORM_DATA, nodePointer); 3098 RequestFormData updater = new RequestFormData(name, 3099 getUrl(), update); 3100 Thread t = new Thread(updater); 3101 t.start(); 3102 } 3103 } 3104 mWebTextView.setMaxLength(maxLength); 3105 AutoCompleteAdapter adapter = null; 3106 mWebTextView.setAdapterCustom(adapter); 3107 mWebTextView.setSingleLine(isTextField); 3108 mWebTextView.setInPassword(nativeFocusCandidateIsPassword()); 3109 if (null == text) { 3110 mWebTextView.setText("", 0, 0); 3111 } else { 3112 // Change to true to enable the old style behavior, where 3113 // entering a textfield/textarea always set the selection to the 3114 // whole field. This was desirable for the case where the user 3115 // intends to scroll past the field using the trackball. 3116 // However, it causes a problem when replying to emails - the 3117 // user expects the cursor to be at the beginning of the 3118 // textarea. Testing out a new behavior, where textfields set 3119 // selection at the end, and textareas at the beginning. 3120 if (false) { 3121 mWebTextView.setText(text, 0, text.length()); 3122 } else if (isTextField) { 3123 int length = text.length(); 3124 mWebTextView.setText(text, length, length); 3125 } else { 3126 mWebTextView.setText(text, 0, 0); 3127 } 3128 } 3129 mWebTextView.requestFocus(); 3130 } 3131 } 3132 3133 /* 3134 * This class requests an Adapter for the WebTextView which shows past 3135 * entries stored in the database. It is a Runnable so that it can be done 3136 * in its own thread, without slowing down the UI. 3137 */ 3138 private class RequestFormData implements Runnable { 3139 private String mName; 3140 private String mUrl; 3141 private Message mUpdateMessage; 3142 3143 public RequestFormData(String name, String url, Message msg) { 3144 mName = name; 3145 mUrl = url; 3146 mUpdateMessage = msg; 3147 } 3148 3149 public void run() { 3150 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3151 if (pastEntries.size() > 0) { 3152 AutoCompleteAdapter adapter = new 3153 AutoCompleteAdapter(mContext, pastEntries); 3154 mUpdateMessage.obj = adapter; 3155 mUpdateMessage.sendToTarget(); 3156 } 3157 } 3158 } 3159 3160 // This is used to determine long press with the center key. Does not 3161 // affect long press with the trackball/touch. 3162 private boolean mGotCenterDown = false; 3163 3164 @Override 3165 public boolean onKeyDown(int keyCode, KeyEvent event) { 3166 if (DebugFlags.WEB_VIEW) { 3167 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3168 + ", " + event); 3169 } 3170 3171 if (mNativeClass == 0) { 3172 return false; 3173 } 3174 3175 // do this hack up front, so it always works, regardless of touch-mode 3176 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3177 mAutoRedraw = !mAutoRedraw; 3178 if (mAutoRedraw) { 3179 invalidate(); 3180 } 3181 return true; 3182 } 3183 3184 // Bubble up the key event if 3185 // 1. it is a system key; or 3186 // 2. the host application wants to handle it; or 3187 // 3. webview is in scroll-zoom state; 3188 if (event.isSystem() 3189 || mCallbackProxy.uiOverrideKeyEvent(event) 3190 || (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM)) { 3191 return false; 3192 } 3193 3194 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3195 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3196 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3197 mExtendSelection = false; 3198 mShiftIsPressed = true; 3199 if (nativeHasCursorNode()) { 3200 Rect rect = nativeCursorNodeBounds(); 3201 mSelectX = contentToView(rect.left); 3202 mSelectY = contentToView(rect.top); 3203 } else { 3204 mSelectX = mScrollX + (int) mLastTouchX; 3205 mSelectY = mScrollY + (int) mLastTouchY; 3206 } 3207 nativeHideCursor(); 3208 } 3209 3210 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3211 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3212 // always handle the navigation keys in the UI thread 3213 switchOutDrawHistory(); 3214 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 3215 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3216 return true; 3217 } 3218 // Bubble up the key event as WebView doesn't handle it 3219 return false; 3220 } 3221 3222 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3223 switchOutDrawHistory(); 3224 if (event.getRepeatCount() == 0) { 3225 mGotCenterDown = true; 3226 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3227 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3228 // Already checked mNativeClass, so we do not need to check it 3229 // again. 3230 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3231 return true; 3232 } 3233 // Bubble up the key event as WebView doesn't handle it 3234 return false; 3235 } 3236 3237 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3238 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3239 // turn off copy select if a shift-key combo is pressed 3240 mExtendSelection = mShiftIsPressed = false; 3241 if (mTouchMode == TOUCH_SELECT_MODE) { 3242 mTouchMode = TOUCH_INIT_MODE; 3243 } 3244 } 3245 3246 if (getSettings().getNavDump()) { 3247 switch (keyCode) { 3248 case KeyEvent.KEYCODE_4: 3249 // "/data/data/com.android.browser/displayTree.txt" 3250 nativeDumpDisplayTree(getUrl()); 3251 break; 3252 case KeyEvent.KEYCODE_5: 3253 case KeyEvent.KEYCODE_6: 3254 // 5: dump the dom tree to the file 3255 // "/data/data/com.android.browser/domTree.txt" 3256 // 6: dump the dom tree to the adb log 3257 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, 3258 (keyCode == KeyEvent.KEYCODE_5) ? 1 : 0, 0); 3259 break; 3260 case KeyEvent.KEYCODE_7: 3261 case KeyEvent.KEYCODE_8: 3262 // 7: dump the render tree to the file 3263 // "/data/data/com.android.browser/renderTree.txt" 3264 // 8: dump the render tree to the adb log 3265 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, 3266 (keyCode == KeyEvent.KEYCODE_7) ? 1 : 0, 0); 3267 break; 3268 case KeyEvent.KEYCODE_9: 3269 nativeInstrumentReport(); 3270 return true; 3271 } 3272 } 3273 3274 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 3275 // This message will put the node in focus, for the DOM's notion 3276 // of focus 3277 mWebViewCore.sendMessage(EventHub.CLICK); 3278 if (nativeCursorIsTextInput()) { 3279 // This will bring up the WebTextView and put it in focus, for 3280 // our view system's notion of focus 3281 rebuildWebTextView(); 3282 // Now we need to pass the event to it 3283 return mWebTextView.onKeyDown(keyCode, event); 3284 } 3285 } 3286 3287 // TODO: should we pass all the keys to DOM or check the meta tag 3288 if (nativeCursorWantsKeyEvents() || true) { 3289 // pass the key to DOM 3290 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3291 // return true as DOM handles the key 3292 return true; 3293 } 3294 3295 // Bubble up the key event as WebView doesn't handle it 3296 return false; 3297 } 3298 3299 @Override 3300 public boolean onKeyUp(int keyCode, KeyEvent event) { 3301 if (DebugFlags.WEB_VIEW) { 3302 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3303 + ", " + event); 3304 } 3305 3306 if (mNativeClass == 0) { 3307 return false; 3308 } 3309 3310 // special CALL handling when cursor node's href is "tel:XXX" 3311 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3312 String text = nativeCursorText(); 3313 if (!nativeCursorIsTextInput() && text != null 3314 && text.startsWith(SCHEME_TEL)) { 3315 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3316 getContext().startActivity(intent); 3317 return true; 3318 } 3319 } 3320 3321 // Bubble up the key event if 3322 // 1. it is a system key; or 3323 // 2. the host application wants to handle it; 3324 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3325 return false; 3326 } 3327 3328 // special handling in scroll_zoom state 3329 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 3330 if (KeyEvent.KEYCODE_DPAD_CENTER == keyCode 3331 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN) { 3332 setZoomScrollIn(); 3333 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 3334 invalidate(); 3335 return true; 3336 } 3337 return false; 3338 } 3339 3340 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3341 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3342 if (commitCopy()) { 3343 return true; 3344 } 3345 } 3346 3347 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3348 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3349 // always handle the navigation keys in the UI thread 3350 // Bubble up the key event as WebView doesn't handle it 3351 return false; 3352 } 3353 3354 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3355 // remove the long press message first 3356 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3357 mGotCenterDown = false; 3358 3359 if (mShiftIsPressed) { 3360 return false; 3361 } 3362 if (getSettings().supportZoom() 3363 && mTouchMode == TOUCH_DOUBLECLICK_MODE) { 3364 zoomScrollOut(); 3365 } else { 3366 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3367 .obtainMessage(SWITCH_TO_CLICK), TAP_TIMEOUT); 3368 if (DebugFlags.WEB_VIEW) { 3369 Log.v(LOGTAG, "TOUCH_DOUBLECLICK_MODE"); 3370 } 3371 mTouchMode = TOUCH_DOUBLECLICK_MODE; 3372 } 3373 return true; 3374 } 3375 3376 // TODO: should we pass all the keys to DOM or check the meta tag 3377 if (nativeCursorWantsKeyEvents() || true) { 3378 // pass the key to DOM 3379 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3380 // return true as DOM handles the key 3381 return true; 3382 } 3383 3384 // Bubble up the key event as WebView doesn't handle it 3385 return false; 3386 } 3387 3388 /** 3389 * @hide 3390 */ 3391 public void emulateShiftHeld() { 3392 mExtendSelection = false; 3393 mShiftIsPressed = true; 3394 nativeHideCursor(); 3395 } 3396 3397 private boolean commitCopy() { 3398 boolean copiedSomething = false; 3399 if (mExtendSelection) { 3400 // copy region so core operates on copy without touching orig. 3401 Region selection = new Region(nativeGetSelection()); 3402 if (selection.isEmpty() == false) { 3403 Toast.makeText(mContext 3404 , com.android.internal.R.string.text_copied 3405 , Toast.LENGTH_SHORT).show(); 3406 mWebViewCore.sendMessage(EventHub.GET_SELECTION, selection); 3407 copiedSomething = true; 3408 } 3409 mExtendSelection = false; 3410 } 3411 mShiftIsPressed = false; 3412 if (mTouchMode == TOUCH_SELECT_MODE) { 3413 mTouchMode = TOUCH_INIT_MODE; 3414 } 3415 return copiedSomething; 3416 } 3417 3418 // Set this as a hierarchy change listener so we can know when this view 3419 // is removed and still have access to our parent. 3420 @Override 3421 protected void onAttachedToWindow() { 3422 super.onAttachedToWindow(); 3423 ViewParent parent = getParent(); 3424 if (parent instanceof ViewGroup) { 3425 ViewGroup p = (ViewGroup) parent; 3426 p.setOnHierarchyChangeListener(this); 3427 } 3428 } 3429 3430 @Override 3431 protected void onDetachedFromWindow() { 3432 super.onDetachedFromWindow(); 3433 ViewParent parent = getParent(); 3434 if (parent instanceof ViewGroup) { 3435 ViewGroup p = (ViewGroup) parent; 3436 p.setOnHierarchyChangeListener(null); 3437 } 3438 3439 // Clean up the zoom controller 3440 mZoomButtonsController.setVisible(false); 3441 } 3442 3443 // Implementation for OnHierarchyChangeListener 3444 public void onChildViewAdded(View parent, View child) {} 3445 3446 public void onChildViewRemoved(View p, View child) { 3447 if (child == this) { 3448 if (inEditingMode()) { 3449 clearTextEntry(); 3450 } 3451 } 3452 } 3453 3454 /** 3455 * @deprecated WebView should not have implemented 3456 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3457 * does nothing now. 3458 */ 3459 @Deprecated 3460 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3461 } 3462 3463 // To avoid drawing the cursor ring, and remove the TextView when our window 3464 // loses focus. 3465 @Override 3466 public void onWindowFocusChanged(boolean hasWindowFocus) { 3467 if (hasWindowFocus) { 3468 if (hasFocus()) { 3469 // If our window regained focus, and we have focus, then begin 3470 // drawing the cursor ring 3471 mDrawCursorRing = true; 3472 if (mNativeClass != 0) { 3473 nativeRecordButtons(true, false, true); 3474 } 3475 } else { 3476 // If our window gained focus, but we do not have it, do not 3477 // draw the cursor ring. 3478 mDrawCursorRing = false; 3479 // We do not call nativeRecordButtons here because we assume 3480 // that when we lost focus, or window focus, it got called with 3481 // false for the first parameter 3482 } 3483 } else { 3484 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3485 /* 3486 * The zoom controls come in their own window, so our window 3487 * loses focus. Our policy is to not draw the cursor ring if 3488 * our window is not focused, but this is an exception since 3489 * the user can still navigate the web page with the zoom 3490 * controls showing. 3491 */ 3492 // If our window has lost focus, stop drawing the cursor ring 3493 mDrawCursorRing = false; 3494 } 3495 mGotKeyDown = false; 3496 mShiftIsPressed = false; 3497 if (mNativeClass != 0) { 3498 nativeRecordButtons(false, false, true); 3499 } 3500 setFocusControllerInactive(); 3501 } 3502 invalidate(); 3503 super.onWindowFocusChanged(hasWindowFocus); 3504 } 3505 3506 /* 3507 * Pass a message to WebCore Thread, telling the WebCore::Page's 3508 * FocusController to be "inactive" so that it will 3509 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3510 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3511 */ 3512 private void setFocusControllerInactive() { 3513 // Do not need to also check whether mWebViewCore is null, because 3514 // mNativeClass is only set if mWebViewCore is non null 3515 if (mNativeClass == 0) return; 3516 mWebViewCore.sendMessage(EventHub.SET_INACTIVE); 3517 } 3518 3519 @Override 3520 protected void onFocusChanged(boolean focused, int direction, 3521 Rect previouslyFocusedRect) { 3522 if (DebugFlags.WEB_VIEW) { 3523 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3524 } 3525 if (focused) { 3526 // When we regain focus, if we have window focus, resume drawing 3527 // the cursor ring 3528 if (hasWindowFocus()) { 3529 mDrawCursorRing = true; 3530 if (mNativeClass != 0) { 3531 nativeRecordButtons(true, false, true); 3532 } 3533 //} else { 3534 // The WebView has gained focus while we do not have 3535 // windowfocus. When our window lost focus, we should have 3536 // called nativeRecordButtons(false...) 3537 } 3538 } else { 3539 // When we lost focus, unless focus went to the TextView (which is 3540 // true if we are in editing mode), stop drawing the cursor ring. 3541 if (!inEditingMode()) { 3542 mDrawCursorRing = false; 3543 if (mNativeClass != 0) { 3544 nativeRecordButtons(false, false, true); 3545 } 3546 setFocusControllerInactive(); 3547 } 3548 mGotKeyDown = false; 3549 } 3550 3551 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3552 } 3553 3554 @Override 3555 protected void onSizeChanged(int w, int h, int ow, int oh) { 3556 super.onSizeChanged(w, h, ow, oh); 3557 // Center zooming to the center of the screen. 3558 mZoomCenterX = getViewWidth() * .5f; 3559 mZoomCenterY = getViewHeight() * .5f; 3560 3561 // update mMinZoomScale if the minimum zoom scale is not fixed 3562 if (!mMinZoomScaleFixed) { 3563 mMinZoomScale = (float) getViewWidth() 3564 / Math.max(ZOOM_OUT_WIDTH, mContentWidth); 3565 } 3566 3567 // we always force, in case our height changed, in which case we still 3568 // want to send the notification over to webkit 3569 setNewZoomScale(mActualScale, true); 3570 } 3571 3572 @Override 3573 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3574 super.onScrollChanged(l, t, oldl, oldt); 3575 sendOurVisibleRect(); 3576 } 3577 3578 3579 @Override 3580 public boolean dispatchKeyEvent(KeyEvent event) { 3581 boolean dispatch = true; 3582 3583 if (!inEditingMode()) { 3584 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3585 mGotKeyDown = true; 3586 } else { 3587 if (!mGotKeyDown) { 3588 /* 3589 * We got a key up for which we were not the recipient of 3590 * the original key down. Don't give it to the view. 3591 */ 3592 dispatch = false; 3593 } 3594 mGotKeyDown = false; 3595 } 3596 } 3597 3598 if (dispatch) { 3599 return super.dispatchKeyEvent(event); 3600 } else { 3601 // We didn't dispatch, so let something else handle the key 3602 return false; 3603 } 3604 } 3605 3606 // Here are the snap align logic: 3607 // 1. If it starts nearly horizontally or vertically, snap align; 3608 // 2. If there is a dramitic direction change, let it go; 3609 // 3. If there is a same direction back and forth, lock it. 3610 3611 // adjustable parameters 3612 private int mMinLockSnapReverseDistance; 3613 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 3614 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 3615 3616 @Override 3617 public boolean onTouchEvent(MotionEvent ev) { 3618 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 3619 return false; 3620 } 3621 3622 if (DebugFlags.WEB_VIEW) { 3623 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 3624 + mTouchMode); 3625 } 3626 3627 int action = ev.getAction(); 3628 float x = ev.getX(); 3629 float y = ev.getY(); 3630 long eventTime = ev.getEventTime(); 3631 3632 // Due to the touch screen edge effect, a touch closer to the edge 3633 // always snapped to the edge. As getViewWidth() can be different from 3634 // getWidth() due to the scrollbar, adjusting the point to match 3635 // getViewWidth(). Same applied to the height. 3636 if (x > getViewWidth() - 1) { 3637 x = getViewWidth() - 1; 3638 } 3639 if (y > getViewHeight() - 1) { 3640 y = getViewHeight() - 1; 3641 } 3642 3643 // pass the touch events from UI thread to WebCore thread 3644 if (mForwardTouchEvents && mTouchMode != SCROLL_ZOOM_OUT 3645 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN 3646 && mTouchMode != SCROLL_ZOOM_ANIMATION_OUT 3647 && (action != MotionEvent.ACTION_MOVE || 3648 eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 3649 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 3650 ted.mAction = action; 3651 ted.mX = viewToContent((int) x + mScrollX); 3652 ted.mY = viewToContent((int) y + mScrollY); 3653 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 3654 mLastSentTouchTime = eventTime; 3655 } 3656 3657 int deltaX = (int) (mLastTouchX - x); 3658 int deltaY = (int) (mLastTouchY - y); 3659 3660 switch (action) { 3661 case MotionEvent.ACTION_DOWN: { 3662 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3663 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3664 // no interaction while animation is in progress 3665 break; 3666 } else if (mTouchMode == SCROLL_ZOOM_OUT) { 3667 mLastScrollX = mZoomScrollX; 3668 mLastScrollY = mZoomScrollY; 3669 // If two taps are close, ignore the first tap 3670 } else if (!mScroller.isFinished()) { 3671 mScroller.abortAnimation(); 3672 mTouchMode = TOUCH_DRAG_START_MODE; 3673 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 3674 } else if (mShiftIsPressed) { 3675 mSelectX = mScrollX + (int) x; 3676 mSelectY = mScrollY + (int) y; 3677 mTouchMode = TOUCH_SELECT_MODE; 3678 if (DebugFlags.WEB_VIEW) { 3679 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 3680 } 3681 nativeMoveSelection(viewToContent(mSelectX) 3682 , viewToContent(mSelectY), false); 3683 mTouchSelection = mExtendSelection = true; 3684 } else { 3685 mTouchMode = TOUCH_INIT_MODE; 3686 mPreventDrag = mForwardTouchEvents; 3687 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 3688 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 3689 (eventTime - mLastTouchUpTime), eventTime); 3690 } 3691 } 3692 // Trigger the link 3693 if (mTouchMode == TOUCH_INIT_MODE) { 3694 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3695 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 3696 } 3697 // Remember where the motion event started 3698 mLastTouchX = x; 3699 mLastTouchY = y; 3700 mLastTouchTime = eventTime; 3701 mVelocityTracker = VelocityTracker.obtain(); 3702 mSnapScrollMode = SNAP_NONE; 3703 break; 3704 } 3705 case MotionEvent.ACTION_MOVE: { 3706 if (mTouchMode == TOUCH_DONE_MODE 3707 || mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3708 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3709 // no dragging during scroll zoom animation 3710 break; 3711 } 3712 if (mTouchMode == SCROLL_ZOOM_OUT) { 3713 // while fully zoomed out, move the virtual window 3714 moveZoomScrollWindow(x, y); 3715 break; 3716 } 3717 mVelocityTracker.addMovement(ev); 3718 3719 if (mTouchMode != TOUCH_DRAG_MODE) { 3720 if (mTouchMode == TOUCH_SELECT_MODE) { 3721 mSelectX = mScrollX + (int) x; 3722 mSelectY = mScrollY + (int) y; 3723 if (DebugFlags.WEB_VIEW) { 3724 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 3725 } 3726 nativeMoveSelection(viewToContent(mSelectX) 3727 , viewToContent(mSelectY), true); 3728 invalidate(); 3729 break; 3730 } 3731 if (mPreventDrag || (deltaX * deltaX + deltaY * deltaY) 3732 < mTouchSlopSquare) { 3733 break; 3734 } 3735 3736 if (mTouchMode == TOUCH_SHORTPRESS_MODE 3737 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3738 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3739 } else if (mTouchMode == TOUCH_INIT_MODE) { 3740 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3741 } 3742 3743 // if it starts nearly horizontal or vertical, enforce it 3744 int ax = Math.abs(deltaX); 3745 int ay = Math.abs(deltaY); 3746 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 3747 mSnapScrollMode = SNAP_X; 3748 mSnapPositive = deltaX > 0; 3749 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 3750 mSnapScrollMode = SNAP_Y; 3751 mSnapPositive = deltaY > 0; 3752 } 3753 3754 mTouchMode = TOUCH_DRAG_MODE; 3755 WebViewCore.pauseUpdate(mWebViewCore); 3756 nativeHideCursor(); 3757 // remove the zoom anchor if there is any 3758 if (mZoomScale != 0) { 3759 mWebViewCore 3760 .sendMessage(EventHub.SET_SNAP_ANCHOR, 0, 0); 3761 } 3762 WebSettings settings = getSettings(); 3763 if (settings.supportZoom() 3764 && settings.getBuiltInZoomControls() 3765 && !mZoomButtonsController.isVisible() 3766 && (canZoomScrollOut() || 3767 mMinZoomScale < mMaxZoomScale)) { 3768 mZoomButtonsController.setVisible(true); 3769 } 3770 } 3771 3772 // do pan 3773 int newScrollX = pinLocX(mScrollX + deltaX); 3774 deltaX = newScrollX - mScrollX; 3775 int newScrollY = pinLocY(mScrollY + deltaY); 3776 deltaY = newScrollY - mScrollY; 3777 boolean done = false; 3778 if (deltaX == 0 && deltaY == 0) { 3779 done = true; 3780 } else { 3781 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 3782 int ax = Math.abs(deltaX); 3783 int ay = Math.abs(deltaY); 3784 if (mSnapScrollMode == SNAP_X) { 3785 // radical change means getting out of snap mode 3786 if (ay > MAX_SLOPE_FOR_DIAG * ax 3787 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3788 mSnapScrollMode = SNAP_NONE; 3789 } 3790 // reverse direction means lock in the snap mode 3791 if ((ax > MAX_SLOPE_FOR_DIAG * ay) && 3792 ((mSnapPositive && 3793 deltaX < -mMinLockSnapReverseDistance) 3794 || (!mSnapPositive && 3795 deltaX > mMinLockSnapReverseDistance))) { 3796 mSnapScrollMode = SNAP_X_LOCK; 3797 } 3798 } else { 3799 // radical change means getting out of snap mode 3800 if ((ax > MAX_SLOPE_FOR_DIAG * ay) 3801 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3802 mSnapScrollMode = SNAP_NONE; 3803 } 3804 // reverse direction means lock in the snap mode 3805 if ((ay > MAX_SLOPE_FOR_DIAG * ax) && 3806 ((mSnapPositive && 3807 deltaY < -mMinLockSnapReverseDistance) 3808 || (!mSnapPositive && 3809 deltaY > mMinLockSnapReverseDistance))) { 3810 mSnapScrollMode = SNAP_Y_LOCK; 3811 } 3812 } 3813 } 3814 3815 if (mSnapScrollMode == SNAP_X 3816 || mSnapScrollMode == SNAP_X_LOCK) { 3817 scrollBy(deltaX, 0); 3818 mLastTouchX = x; 3819 } else if (mSnapScrollMode == SNAP_Y 3820 || mSnapScrollMode == SNAP_Y_LOCK) { 3821 scrollBy(0, deltaY); 3822 mLastTouchY = y; 3823 } else { 3824 scrollBy(deltaX, deltaY); 3825 mLastTouchX = x; 3826 mLastTouchY = y; 3827 } 3828 mLastTouchTime = eventTime; 3829 mUserScroll = true; 3830 } 3831 3832 if (!getSettings().getBuiltInZoomControls()) { 3833 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 3834 boolean showMagnify = canZoomScrollOut(); 3835 if (mZoomControls != null && (showPlusMinus || showMagnify)) { 3836 if (mZoomControls.getVisibility() == View.VISIBLE) { 3837 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 3838 } else { 3839 mZoomControls.show(showPlusMinus, showMagnify); 3840 } 3841 mPrivateHandler.postDelayed(mZoomControlRunnable, 3842 ZOOM_CONTROLS_TIMEOUT); 3843 } 3844 } 3845 3846 if (done) { 3847 // return false to indicate that we can't pan out of the 3848 // view space 3849 return false; 3850 } 3851 break; 3852 } 3853 case MotionEvent.ACTION_UP: { 3854 mLastTouchUpTime = eventTime; 3855 switch (mTouchMode) { 3856 case TOUCH_INIT_MODE: // tap 3857 case TOUCH_SHORTPRESS_START_MODE: 3858 case TOUCH_SHORTPRESS_MODE: 3859 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3860 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3861 mTouchMode = TOUCH_DONE_MODE; 3862 doShortPress(); 3863 break; 3864 case TOUCH_SELECT_MODE: 3865 commitCopy(); 3866 mTouchSelection = false; 3867 break; 3868 case SCROLL_ZOOM_ANIMATION_IN: 3869 case SCROLL_ZOOM_ANIMATION_OUT: 3870 // no action during scroll animation 3871 break; 3872 case SCROLL_ZOOM_OUT: 3873 if (DebugFlags.WEB_VIEW) { 3874 Log.v(LOGTAG, "ACTION_UP SCROLL_ZOOM_OUT" 3875 + " eventTime - mLastTouchTime=" 3876 + (eventTime - mLastTouchTime)); 3877 } 3878 // for now, always zoom back when the drag completes 3879 if (true || eventTime - mLastTouchTime < TAP_TIMEOUT) { 3880 // but if we tap, zoom in where we tap 3881 if (eventTime - mLastTouchTime < TAP_TIMEOUT) { 3882 zoomScrollTap(x, y); 3883 } 3884 // start zooming in back to the original view 3885 setZoomScrollIn(); 3886 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 3887 invalidate(); 3888 } 3889 break; 3890 case TOUCH_DRAG_MODE: 3891 // if the user waits a while w/o moving before the 3892 // up, we don't want to do a fling 3893 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 3894 mVelocityTracker.addMovement(ev); 3895 doFling(); 3896 break; 3897 } 3898 WebViewCore.resumeUpdate(mWebViewCore); 3899 break; 3900 case TOUCH_DRAG_START_MODE: 3901 case TOUCH_DONE_MODE: 3902 // do nothing 3903 break; 3904 } 3905 // we also use mVelocityTracker == null to tell us that we are 3906 // not "moving around", so we can take the slower/prettier 3907 // mode in the drawing code 3908 if (mVelocityTracker != null) { 3909 mVelocityTracker.recycle(); 3910 mVelocityTracker = null; 3911 } 3912 break; 3913 } 3914 case MotionEvent.ACTION_CANCEL: { 3915 // we also use mVelocityTracker == null to tell us that we are 3916 // not "moving around", so we can take the slower/prettier 3917 // mode in the drawing code 3918 if (mVelocityTracker != null) { 3919 mVelocityTracker.recycle(); 3920 mVelocityTracker = null; 3921 } 3922 if (mTouchMode == SCROLL_ZOOM_OUT || 3923 mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 3924 scrollTo(mZoomScrollX, mZoomScrollY); 3925 } else if (mTouchMode == TOUCH_DRAG_MODE) { 3926 WebViewCore.resumeUpdate(mWebViewCore); 3927 } 3928 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3929 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3930 mTouchMode = TOUCH_DONE_MODE; 3931 nativeHideCursor(); 3932 break; 3933 } 3934 } 3935 return true; 3936 } 3937 3938 private long mTrackballFirstTime = 0; 3939 private long mTrackballLastTime = 0; 3940 private float mTrackballRemainsX = 0.0f; 3941 private float mTrackballRemainsY = 0.0f; 3942 private int mTrackballXMove = 0; 3943 private int mTrackballYMove = 0; 3944 private boolean mExtendSelection = false; 3945 private boolean mTouchSelection = false; 3946 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 3947 private static final int TRACKBALL_TIMEOUT = 200; 3948 private static final int TRACKBALL_WAIT = 100; 3949 private static final int TRACKBALL_SCALE = 400; 3950 private static final int TRACKBALL_SCROLL_COUNT = 5; 3951 private static final int TRACKBALL_MOVE_COUNT = 10; 3952 private static final int TRACKBALL_MULTIPLIER = 3; 3953 private static final int SELECT_CURSOR_OFFSET = 16; 3954 private int mSelectX = 0; 3955 private int mSelectY = 0; 3956 private boolean mShiftIsPressed = false; 3957 private boolean mTrackballDown = false; 3958 private long mTrackballUpTime = 0; 3959 private long mLastCursorTime = 0; 3960 private Rect mLastCursorBounds; 3961 3962 // Set by default; BrowserActivity clears to interpret trackball data 3963 // directly for movement. Currently, the framework only passes 3964 // arrow key events, not trackball events, from one child to the next 3965 private boolean mMapTrackballToArrowKeys = true; 3966 3967 public void setMapTrackballToArrowKeys(boolean setMap) { 3968 mMapTrackballToArrowKeys = setMap; 3969 } 3970 3971 void resetTrackballTime() { 3972 mTrackballLastTime = 0; 3973 } 3974 3975 @Override 3976 public boolean onTrackballEvent(MotionEvent ev) { 3977 long time = ev.getEventTime(); 3978 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 3979 if (ev.getY() > 0) pageDown(true); 3980 if (ev.getY() < 0) pageUp(true); 3981 return true; 3982 } 3983 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 3984 mPrivateHandler.removeMessages(SWITCH_TO_CLICK); 3985 mTrackballDown = true; 3986 if (mNativeClass != 0) { 3987 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3988 } 3989 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 3990 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 3991 nativeSelectBestAt(mLastCursorBounds); 3992 } 3993 if (DebugFlags.WEB_VIEW) { 3994 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 3995 + " time=" + time 3996 + " mLastCursorTime=" + mLastCursorTime); 3997 } 3998 if (isInTouchMode()) requestFocusFromTouch(); 3999 return false; // let common code in onKeyDown at it 4000 } 4001 if (ev.getAction() == MotionEvent.ACTION_UP) { 4002 // LONG_PRESS_CENTER is set in common onKeyDown 4003 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4004 mTrackballDown = false; 4005 mTrackballUpTime = time; 4006 if (mShiftIsPressed) { 4007 if (mExtendSelection) { 4008 commitCopy(); 4009 } else { 4010 mExtendSelection = true; 4011 } 4012 } 4013 if (DebugFlags.WEB_VIEW) { 4014 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4015 + " time=" + time 4016 ); 4017 } 4018 return false; // let common code in onKeyUp at it 4019 } 4020 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4021 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4022 return false; 4023 } 4024 // no move if we're still waiting on SWITCH_TO_CLICK timeout 4025 if (mTouchMode == TOUCH_DOUBLECLICK_MODE) { 4026 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent 2 click quit"); 4027 return true; 4028 } 4029 if (mTrackballDown) { 4030 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4031 return true; // discard move if trackball is down 4032 } 4033 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4034 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4035 return true; 4036 } 4037 // TODO: alternatively we can do panning as touch does 4038 switchOutDrawHistory(); 4039 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4040 if (DebugFlags.WEB_VIEW) { 4041 Log.v(LOGTAG, "onTrackballEvent time=" 4042 + time + " last=" + mTrackballLastTime); 4043 } 4044 mTrackballFirstTime = time; 4045 mTrackballXMove = mTrackballYMove = 0; 4046 } 4047 mTrackballLastTime = time; 4048 if (DebugFlags.WEB_VIEW) { 4049 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4050 } 4051 mTrackballRemainsX += ev.getX(); 4052 mTrackballRemainsY += ev.getY(); 4053 doTrackball(time); 4054 return true; 4055 } 4056 4057 void moveSelection(float xRate, float yRate) { 4058 if (mNativeClass == 0) 4059 return; 4060 int width = getViewWidth(); 4061 int height = getViewHeight(); 4062 mSelectX += scaleTrackballX(xRate, width); 4063 mSelectY += scaleTrackballY(yRate, height); 4064 int maxX = width + mScrollX; 4065 int maxY = height + mScrollY; 4066 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4067 , mSelectX)); 4068 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4069 , mSelectY)); 4070 if (DebugFlags.WEB_VIEW) { 4071 Log.v(LOGTAG, "moveSelection" 4072 + " mSelectX=" + mSelectX 4073 + " mSelectY=" + mSelectY 4074 + " mScrollX=" + mScrollX 4075 + " mScrollY=" + mScrollY 4076 + " xRate=" + xRate 4077 + " yRate=" + yRate 4078 ); 4079 } 4080 nativeMoveSelection(viewToContent(mSelectX) 4081 , viewToContent(mSelectY), mExtendSelection); 4082 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4083 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4084 : 0; 4085 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4086 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4087 : 0; 4088 pinScrollBy(scrollX, scrollY, true, 0); 4089 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4090 requestRectangleOnScreen(select); 4091 invalidate(); 4092 } 4093 4094 private int scaleTrackballX(float xRate, int width) { 4095 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4096 int nextXMove = xMove; 4097 if (xMove > 0) { 4098 if (xMove > mTrackballXMove) { 4099 xMove -= mTrackballXMove; 4100 } 4101 } else if (xMove < mTrackballXMove) { 4102 xMove -= mTrackballXMove; 4103 } 4104 mTrackballXMove = nextXMove; 4105 return xMove; 4106 } 4107 4108 private int scaleTrackballY(float yRate, int height) { 4109 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4110 int nextYMove = yMove; 4111 if (yMove > 0) { 4112 if (yMove > mTrackballYMove) { 4113 yMove -= mTrackballYMove; 4114 } 4115 } else if (yMove < mTrackballYMove) { 4116 yMove -= mTrackballYMove; 4117 } 4118 mTrackballYMove = nextYMove; 4119 return yMove; 4120 } 4121 4122 private int keyCodeToSoundsEffect(int keyCode) { 4123 switch(keyCode) { 4124 case KeyEvent.KEYCODE_DPAD_UP: 4125 return SoundEffectConstants.NAVIGATION_UP; 4126 case KeyEvent.KEYCODE_DPAD_RIGHT: 4127 return SoundEffectConstants.NAVIGATION_RIGHT; 4128 case KeyEvent.KEYCODE_DPAD_DOWN: 4129 return SoundEffectConstants.NAVIGATION_DOWN; 4130 case KeyEvent.KEYCODE_DPAD_LEFT: 4131 return SoundEffectConstants.NAVIGATION_LEFT; 4132 } 4133 throw new IllegalArgumentException("keyCode must be one of " + 4134 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4135 "KEYCODE_DPAD_LEFT}."); 4136 } 4137 4138 private void doTrackball(long time) { 4139 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4140 if (elapsed == 0) { 4141 elapsed = TRACKBALL_TIMEOUT; 4142 } 4143 float xRate = mTrackballRemainsX * 1000 / elapsed; 4144 float yRate = mTrackballRemainsY * 1000 / elapsed; 4145 if (mShiftIsPressed) { 4146 moveSelection(xRate, yRate); 4147 mTrackballRemainsX = mTrackballRemainsY = 0; 4148 return; 4149 } 4150 float ax = Math.abs(xRate); 4151 float ay = Math.abs(yRate); 4152 float maxA = Math.max(ax, ay); 4153 if (DebugFlags.WEB_VIEW) { 4154 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4155 + " xRate=" + xRate 4156 + " yRate=" + yRate 4157 + " mTrackballRemainsX=" + mTrackballRemainsX 4158 + " mTrackballRemainsY=" + mTrackballRemainsY); 4159 } 4160 int width = mContentWidth - getViewWidth(); 4161 int height = mContentHeight - getViewHeight(); 4162 if (width < 0) width = 0; 4163 if (height < 0) height = 0; 4164 if (mTouchMode == SCROLL_ZOOM_OUT) { 4165 int oldX = mZoomScrollX; 4166 int oldY = mZoomScrollY; 4167 int maxWH = Math.max(width, height); 4168 mZoomScrollX += scaleTrackballX(xRate, maxWH); 4169 mZoomScrollY += scaleTrackballY(yRate, maxWH); 4170 if (DebugFlags.WEB_VIEW) { 4171 Log.v(LOGTAG, "doTrackball SCROLL_ZOOM_OUT" 4172 + " mZoomScrollX=" + mZoomScrollX 4173 + " mZoomScrollY=" + mZoomScrollY); 4174 } 4175 mZoomScrollX = Math.min(width, Math.max(0, mZoomScrollX)); 4176 mZoomScrollY = Math.min(height, Math.max(0, mZoomScrollY)); 4177 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 4178 invalidate(); 4179 } 4180 mTrackballRemainsX = mTrackballRemainsY = 0; 4181 return; 4182 } 4183 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4184 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4185 maxA = Math.max(ax, ay); 4186 int count = Math.max(0, (int) maxA); 4187 int oldScrollX = mScrollX; 4188 int oldScrollY = mScrollY; 4189 if (count > 0) { 4190 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4191 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4192 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4193 KeyEvent.KEYCODE_DPAD_RIGHT; 4194 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4195 if (DebugFlags.WEB_VIEW) { 4196 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4197 + " count=" + count 4198 + " mTrackballRemainsX=" + mTrackballRemainsX 4199 + " mTrackballRemainsY=" + mTrackballRemainsY); 4200 } 4201 if (navHandledKey(selectKeyCode, count, false, time)) { 4202 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4203 } 4204 mTrackballRemainsX = mTrackballRemainsY = 0; 4205 } 4206 if (count >= TRACKBALL_SCROLL_COUNT) { 4207 int xMove = scaleTrackballX(xRate, width); 4208 int yMove = scaleTrackballY(yRate, height); 4209 if (DebugFlags.WEB_VIEW) { 4210 Log.v(LOGTAG, "doTrackball pinScrollBy" 4211 + " count=" + count 4212 + " xMove=" + xMove + " yMove=" + yMove 4213 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4214 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4215 ); 4216 } 4217 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4218 xMove = 0; 4219 } 4220 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4221 yMove = 0; 4222 } 4223 if (xMove != 0 || yMove != 0) { 4224 pinScrollBy(xMove, yMove, true, 0); 4225 } 4226 mUserScroll = true; 4227 } 4228 } 4229 4230 public void flingScroll(int vx, int vy) { 4231 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4232 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4233 4234 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 4235 invalidate(); 4236 } 4237 4238 private void doFling() { 4239 if (mVelocityTracker == null) { 4240 return; 4241 } 4242 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4243 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4244 4245 mVelocityTracker.computeCurrentVelocity(1000); 4246 int vx = (int) mVelocityTracker.getXVelocity(); 4247 int vy = (int) mVelocityTracker.getYVelocity(); 4248 4249 if (mSnapScrollMode != SNAP_NONE) { 4250 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_X_LOCK) { 4251 vy = 0; 4252 } else { 4253 vx = 0; 4254 } 4255 } 4256 4257 if (true /* EMG release: make our fling more like Maps' */) { 4258 // maps cuts their velocity in half 4259 vx = vx * 3 / 4; 4260 vy = vy * 3 / 4; 4261 } 4262 4263 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 4264 // TODO: duration is calculated based on velocity, if the range is 4265 // small, the animation will stop before duration is up. We may 4266 // want to calculate how long the animation is going to run to precisely 4267 // resume the webcore update. 4268 final int time = mScroller.getDuration(); 4269 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_UPDATE, time); 4270 invalidate(); 4271 } 4272 4273 private boolean zoomWithPreview(float scale) { 4274 float oldScale = mActualScale; 4275 4276 // snap to DEFAULT_SCALE if it is close 4277 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 4278 scale = mDefaultScale; 4279 } 4280 4281 setNewZoomScale(scale, false); 4282 4283 if (oldScale != mActualScale) { 4284 // use mZoomPickerScale to see zoom preview first 4285 mZoomStart = SystemClock.uptimeMillis(); 4286 mInvInitialZoomScale = 1.0f / oldScale; 4287 mInvFinalZoomScale = 1.0f / mActualScale; 4288 mZoomScale = mActualScale; 4289 invalidate(); 4290 return true; 4291 } else { 4292 return false; 4293 } 4294 } 4295 4296 /** 4297 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 4298 * in charge of installing this view to the view hierarchy. This view will 4299 * become visible when the user starts scrolling via touch and fade away if 4300 * the user does not interact with it. 4301 * <p/> 4302 * API version 3 introduces a built-in zoom mechanism that is shown 4303 * automatically by the MapView. This is the preferred approach for 4304 * showing the zoom UI. 4305 * 4306 * @deprecated The built-in zoom mechanism is preferred, see 4307 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 4308 */ 4309 @Deprecated 4310 public View getZoomControls() { 4311 if (!getSettings().supportZoom()) { 4312 Log.w(LOGTAG, "This WebView doesn't support zoom."); 4313 return null; 4314 } 4315 if (mZoomControls == null) { 4316 mZoomControls = createZoomControls(); 4317 4318 /* 4319 * need to be set to VISIBLE first so that getMeasuredHeight() in 4320 * {@link #onSizeChanged()} can return the measured value for proper 4321 * layout. 4322 */ 4323 mZoomControls.setVisibility(View.VISIBLE); 4324 mZoomControlRunnable = new Runnable() { 4325 public void run() { 4326 4327 /* Don't dismiss the controls if the user has 4328 * focus on them. Wait and check again later. 4329 */ 4330 if (!mZoomControls.hasFocus()) { 4331 mZoomControls.hide(); 4332 } else { 4333 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4334 mPrivateHandler.postDelayed(mZoomControlRunnable, 4335 ZOOM_CONTROLS_TIMEOUT); 4336 } 4337 } 4338 }; 4339 } 4340 return mZoomControls; 4341 } 4342 4343 private ExtendedZoomControls createZoomControls() { 4344 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 4345 , null); 4346 zoomControls.setOnZoomInClickListener(new OnClickListener() { 4347 public void onClick(View v) { 4348 // reset time out 4349 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4350 mPrivateHandler.postDelayed(mZoomControlRunnable, 4351 ZOOM_CONTROLS_TIMEOUT); 4352 zoomIn(); 4353 } 4354 }); 4355 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 4356 public void onClick(View v) { 4357 // reset time out 4358 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4359 mPrivateHandler.postDelayed(mZoomControlRunnable, 4360 ZOOM_CONTROLS_TIMEOUT); 4361 zoomOut(); 4362 } 4363 }); 4364 zoomControls.setOnZoomMagnifyClickListener(new OnClickListener() { 4365 public void onClick(View v) { 4366 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4367 mPrivateHandler.postDelayed(mZoomControlRunnable, 4368 ZOOM_CONTROLS_TIMEOUT); 4369 zoomScrollOut(); 4370 } 4371 }); 4372 return zoomControls; 4373 } 4374 4375 /** 4376 * Gets the {@link ZoomButtonsController} which can be used to add 4377 * additional buttons to the zoom controls window. 4378 * 4379 * @return The instance of {@link ZoomButtonsController} used by this class, 4380 * or null if it is unavailable. 4381 * @hide 4382 */ 4383 public ZoomButtonsController getZoomButtonsController() { 4384 return mZoomButtonsController; 4385 } 4386 4387 /** 4388 * Perform zoom in in the webview 4389 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 4390 */ 4391 public boolean zoomIn() { 4392 // TODO: alternatively we can disallow this during draw history mode 4393 switchOutDrawHistory(); 4394 return zoomWithPreview(mActualScale * 1.25f); 4395 } 4396 4397 /** 4398 * Perform zoom out in the webview 4399 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 4400 */ 4401 public boolean zoomOut() { 4402 // TODO: alternatively we can disallow this during draw history mode 4403 switchOutDrawHistory(); 4404 return zoomWithPreview(mActualScale * 0.8f); 4405 } 4406 4407 private void updateSelection() { 4408 if (mNativeClass == 0) { 4409 return; 4410 } 4411 // mLastTouchX and mLastTouchY are the point in the current viewport 4412 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4413 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4414 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 4415 contentX + mNavSlop, contentY + mNavSlop); 4416 nativeSelectBestAt(rect); 4417 } 4418 4419 /*package*/ void shortPressOnTextField() { 4420 if (inEditingMode()) { 4421 View v = mWebTextView; 4422 int x = viewToContent((v.getLeft() + v.getRight()) >> 1); 4423 int y = viewToContent((v.getTop() + v.getBottom()) >> 1); 4424 nativeMotionUp(x, y, mNavSlop); 4425 } 4426 } 4427 4428 private void doShortPress() { 4429 if (mNativeClass == 0) { 4430 return; 4431 } 4432 switchOutDrawHistory(); 4433 // mLastTouchX and mLastTouchY are the point in the current viewport 4434 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4435 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4436 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 4437 if (mLogEvent) { 4438 Checkin.updateStats(mContext.getContentResolver(), 4439 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 4440 } 4441 } 4442 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 4443 playSoundEffect(SoundEffectConstants.CLICK); 4444 } 4445 } 4446 4447 // Called by JNI to handle a touch on a node representing an email address, 4448 // address, or phone number 4449 private void overrideLoading(String url) { 4450 mCallbackProxy.uiOverrideUrlLoading(url); 4451 } 4452 4453 @Override 4454 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 4455 boolean result = false; 4456 if (inEditingMode()) { 4457 result = mWebTextView.requestFocus(direction, 4458 previouslyFocusedRect); 4459 } else { 4460 result = super.requestFocus(direction, previouslyFocusedRect); 4461 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 4462 // For cases such as GMail, where we gain focus from a direction, 4463 // we want to move to the first available link. 4464 // FIXME: If there are no visible links, we may not want to 4465 int fakeKeyDirection = 0; 4466 switch(direction) { 4467 case View.FOCUS_UP: 4468 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 4469 break; 4470 case View.FOCUS_DOWN: 4471 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 4472 break; 4473 case View.FOCUS_LEFT: 4474 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 4475 break; 4476 case View.FOCUS_RIGHT: 4477 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 4478 break; 4479 default: 4480 return result; 4481 } 4482 if (mNativeClass != 0 && !nativeHasCursorNode()) { 4483 navHandledKey(fakeKeyDirection, 1, true, 0); 4484 } 4485 } 4486 } 4487 return result; 4488 } 4489 4490 @Override 4491 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4492 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 4493 4494 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 4495 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 4496 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 4497 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 4498 4499 int measuredHeight = heightSize; 4500 int measuredWidth = widthSize; 4501 4502 // Grab the content size from WebViewCore. 4503 int contentHeight = mContentHeight; 4504 int contentWidth = mContentWidth; 4505 4506// Log.d(LOGTAG, "------- measure " + heightMode); 4507 4508 if (heightMode != MeasureSpec.EXACTLY) { 4509 mHeightCanMeasure = true; 4510 measuredHeight = contentHeight; 4511 if (heightMode == MeasureSpec.AT_MOST) { 4512 // If we are larger than the AT_MOST height, then our height can 4513 // no longer be measured and we should scroll internally. 4514 if (measuredHeight > heightSize) { 4515 measuredHeight = heightSize; 4516 mHeightCanMeasure = false; 4517 } 4518 } 4519 } else { 4520 mHeightCanMeasure = false; 4521 } 4522 if (mNativeClass != 0) { 4523 nativeSetHeightCanMeasure(mHeightCanMeasure); 4524 } 4525 // For the width, always use the given size unless unspecified. 4526 if (widthMode == MeasureSpec.UNSPECIFIED) { 4527 mWidthCanMeasure = true; 4528 measuredWidth = contentWidth; 4529 } else { 4530 mWidthCanMeasure = false; 4531 } 4532 4533 synchronized (this) { 4534 setMeasuredDimension(measuredWidth, measuredHeight); 4535 } 4536 } 4537 4538 @Override 4539 public boolean requestChildRectangleOnScreen(View child, 4540 Rect rect, 4541 boolean immediate) { 4542 rect.offset(child.getLeft() - child.getScrollX(), 4543 child.getTop() - child.getScrollY()); 4544 4545 int height = getHeight() - getHorizontalScrollbarHeight(); 4546 int screenTop = mScrollY; 4547 int screenBottom = screenTop + height; 4548 4549 int scrollYDelta = 0; 4550 4551 if (rect.bottom > screenBottom) { 4552 int oneThirdOfScreenHeight = height / 3; 4553 if (rect.height() > 2 * oneThirdOfScreenHeight) { 4554 // If the rectangle is too tall to fit in the bottom two thirds 4555 // of the screen, place it at the top. 4556 scrollYDelta = rect.top - screenTop; 4557 } else { 4558 // If the rectangle will still fit on screen, we want its 4559 // top to be in the top third of the screen. 4560 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 4561 } 4562 } else if (rect.top < screenTop) { 4563 scrollYDelta = rect.top - screenTop; 4564 } 4565 4566 int width = getWidth() - getVerticalScrollbarWidth(); 4567 int screenLeft = mScrollX; 4568 int screenRight = screenLeft + width; 4569 4570 int scrollXDelta = 0; 4571 4572 if (rect.right > screenRight && rect.left > screenLeft) { 4573 if (rect.width() > width) { 4574 scrollXDelta += (rect.left - screenLeft); 4575 } else { 4576 scrollXDelta += (rect.right - screenRight); 4577 } 4578 } else if (rect.left < screenLeft) { 4579 scrollXDelta -= (screenLeft - rect.left); 4580 } 4581 4582 if ((scrollYDelta | scrollXDelta) != 0) { 4583 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 4584 } 4585 4586 return false; 4587 } 4588 4589 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 4590 String replace, int newStart, int newEnd) { 4591 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 4592 arg.mReplace = replace; 4593 arg.mNewStart = newStart; 4594 arg.mNewEnd = newEnd; 4595 mTextGeneration++; 4596 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 4597 } 4598 4599 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 4600 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 4601 mWebViewCore.sendMessage(EventHub.CLICK); 4602 } 4603 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 4604 arg.mEvent = event; 4605 arg.mCurrentText = currentText; 4606 // Increase our text generation number, and pass it to webcore thread 4607 mTextGeneration++; 4608 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 4609 // WebKit's document state is not saved until about to leave the page. 4610 // To make sure the host application, like Browser, has the up to date 4611 // document state when it goes to background, we force to save the 4612 // document state. 4613 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 4614 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 4615 cursorData(), 1000); 4616 } 4617 4618 /* package */ WebViewCore getWebViewCore() { 4619 return mWebViewCore; 4620 } 4621 4622 //------------------------------------------------------------------------- 4623 // Methods can be called from a separate thread, like WebViewCore 4624 // If it needs to call the View system, it has to send message. 4625 //------------------------------------------------------------------------- 4626 4627 /** 4628 * General handler to receive message coming from webkit thread 4629 */ 4630 class PrivateHandler extends Handler { 4631 @Override 4632 public void handleMessage(Message msg) { 4633 if (DebugFlags.WEB_VIEW) { 4634 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 4635 > INVAL_RECT_MSG_ID ? Integer.toString(msg.what) 4636 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 4637 } 4638 switch (msg.what) { 4639 case REMEMBER_PASSWORD: { 4640 mDatabase.setUsernamePassword( 4641 msg.getData().getString("host"), 4642 msg.getData().getString("username"), 4643 msg.getData().getString("password")); 4644 ((Message) msg.obj).sendToTarget(); 4645 break; 4646 } 4647 case NEVER_REMEMBER_PASSWORD: { 4648 mDatabase.setUsernamePassword( 4649 msg.getData().getString("host"), null, null); 4650 ((Message) msg.obj).sendToTarget(); 4651 break; 4652 } 4653 case SWITCH_TO_SHORTPRESS: { 4654 if (mTouchMode == TOUCH_INIT_MODE) { 4655 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 4656 updateSelection(); 4657 } 4658 break; 4659 } 4660 case SWITCH_TO_LONGPRESS: { 4661 if (!mPreventDrag) { 4662 mTouchMode = TOUCH_DONE_MODE; 4663 performLongClick(); 4664 rebuildWebTextView(); 4665 } 4666 break; 4667 } 4668 case SWITCH_TO_CLICK: 4669 // The user clicked with the trackball, and did not click a 4670 // second time, so perform the action of a trackball single 4671 // click 4672 mTouchMode = TOUCH_DONE_MODE; 4673 Rect visibleRect = sendOurVisibleRect(); 4674 // Note that sendOurVisibleRect calls viewToContent, so the 4675 // coordinates should be in content coordinates. 4676 if (!nativeCursorIntersects(visibleRect)) { 4677 break; 4678 } 4679 nativeSetFollowedLink(true); 4680 WebViewCore.CursorData data = cursorData(); 4681 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4682 playSoundEffect(SoundEffectConstants.CLICK); 4683 boolean isTextInput = nativeCursorIsTextInput(); 4684 if (isTextInput || !mCallbackProxy.uiOverrideUrlLoading( 4685 nativeCursorText())) { 4686 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4687 nativeCursorNodePointer()); 4688 } 4689 if (isTextInput) { 4690 rebuildWebTextView(); 4691 } 4692 break; 4693 case SCROLL_BY_MSG_ID: 4694 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 4695 break; 4696 case SYNC_SCROLL_TO_MSG_ID: 4697 if (mUserScroll) { 4698 // if user has scrolled explicitly, don't sync the 4699 // scroll position any more 4700 mUserScroll = false; 4701 break; 4702 } 4703 // fall through 4704 case SCROLL_TO_MSG_ID: 4705 if (setContentScrollTo(msg.arg1, msg.arg2)) { 4706 // if we can't scroll to the exact position due to pin, 4707 // send a message to WebCore to re-scroll when we get a 4708 // new picture 4709 mUserScroll = false; 4710 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 4711 msg.arg1, msg.arg2); 4712 } 4713 break; 4714 case SPAWN_SCROLL_TO_MSG_ID: 4715 spawnContentScrollTo(msg.arg1, msg.arg2); 4716 break; 4717 case NEW_PICTURE_MSG_ID: 4718 // called for new content 4719 final WebViewCore.DrawData draw = 4720 (WebViewCore.DrawData) msg.obj; 4721 final Point viewSize = draw.mViewPoint; 4722 if (mZoomScale > 0) { 4723 // use the same logic in sendViewSizeZoom() to make sure 4724 // the mZoomScale has matched the viewSize so that we 4725 // can clear mZoomScale 4726 if (Math.round(getViewWidth() / mZoomScale) == viewSize.x) { 4727 mZoomScale = 0; 4728 mWebViewCore.sendMessage(EventHub.SET_SNAP_ANCHOR, 4729 0, 0); 4730 } 4731 } 4732 if (!mMinZoomScaleFixed) { 4733 mMinZoomScale = (float) getViewWidth() 4734 / Math.max(ZOOM_OUT_WIDTH, draw.mWidthHeight.x); 4735 } 4736 // We update the layout (i.e. request a layout from the 4737 // view system) if the last view size that we sent to 4738 // WebCore matches the view size of the picture we just 4739 // received in the fixed dimension. 4740 final boolean updateLayout = viewSize.x == mLastWidthSent 4741 && viewSize.y == mLastHeightSent; 4742 recordNewContentSize(draw.mWidthHeight.x, 4743 draw.mWidthHeight.y, updateLayout); 4744 if (DebugFlags.WEB_VIEW) { 4745 Rect b = draw.mInvalRegion.getBounds(); 4746 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 4747 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 4748 } 4749 invalidate(contentToView(draw.mInvalRegion.getBounds())); 4750 if (mPictureListener != null) { 4751 mPictureListener.onNewPicture(WebView.this, capturePicture()); 4752 } 4753 break; 4754 case WEBCORE_INITIALIZED_MSG_ID: 4755 // nativeCreate sets mNativeClass to a non-zero value 4756 nativeCreate(msg.arg1); 4757 break; 4758 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 4759 // Make sure that the textfield is currently focused 4760 // and representing the same node as the pointer. 4761 if (inEditingMode() && 4762 mWebTextView.isSameTextField(msg.arg1)) { 4763 if (msg.getData().getBoolean("password")) { 4764 Spannable text = (Spannable) mWebTextView.getText(); 4765 int start = Selection.getSelectionStart(text); 4766 int end = Selection.getSelectionEnd(text); 4767 mWebTextView.setInPassword(true); 4768 // Restore the selection, which may have been 4769 // ruined by setInPassword. 4770 Spannable pword = 4771 (Spannable) mWebTextView.getText(); 4772 Selection.setSelection(pword, start, end); 4773 // If the text entry has created more events, ignore 4774 // this one. 4775 } else if (msg.arg2 == mTextGeneration) { 4776 mWebTextView.setTextAndKeepSelection( 4777 (String) msg.obj); 4778 } 4779 } 4780 break; 4781 case DID_FIRST_LAYOUT_MSG_ID: 4782 if (mNativeClass == 0) { 4783 break; 4784 } 4785 ScaleLimitData scaleLimit = (ScaleLimitData) msg.obj; 4786 int minScale = scaleLimit.mMinScale; 4787 if (minScale == 0) { 4788 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 4789 mMinZoomScaleFixed = false; 4790 } else { 4791 mMinZoomScale = (float) (minScale / 100.0); 4792 mMinZoomScaleFixed = true; 4793 } 4794 int maxScale = scaleLimit.mMaxScale; 4795 if (maxScale == 0) { 4796 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 4797 } else { 4798 mMaxZoomScale = (float) (maxScale / 100.0); 4799 } 4800 // If history Picture is drawn, don't update zoomWidth 4801 if (mDrawHistory) { 4802 break; 4803 } 4804 int width = getViewWidth(); 4805 if (width == 0) { 4806 break; 4807 } 4808 int initialScale = msg.arg1; 4809 int viewportWidth = msg.arg2; 4810 // start a new page with DEFAULT_SCALE zoom scale. 4811 float scale = mDefaultScale; 4812 if (mInitialScale > 0) { 4813 scale = mInitialScale / 100.0f; 4814 } else { 4815 if (initialScale < 0) break; 4816 if (mWebViewCore.getSettings().getUseWideViewPort()) { 4817 // force viewSizeChanged by setting mLastWidthSent 4818 // to 0 4819 mLastWidthSent = 0; 4820 } 4821 if (initialScale == 0) { 4822 // if viewportWidth is defined and it is smaller 4823 // than the view width, zoom in to fill the view 4824 if (viewportWidth > 0 && viewportWidth < width) { 4825 scale = (float) width / viewportWidth; 4826 } 4827 } else { 4828 scale = initialScale / 100.0f; 4829 } 4830 } 4831 setNewZoomScale(scale, false); 4832 break; 4833 case UPDATE_TEXT_ENTRY_MSG_ID: 4834 // this is sent after finishing resize in WebViewCore. Make 4835 // sure the text edit box is still on the screen. 4836 if (inEditingMode() && nativeCursorIsTextInput()) { 4837 mWebTextView.bringIntoView(); 4838 } 4839 rebuildWebTextView(); 4840 break; 4841 case INVAL_RECT_MSG_ID: { 4842 Rect r = (Rect)msg.obj; 4843 if (r == null) { 4844 invalidate(); 4845 } else { 4846 // we need to scale r from content into view coords, 4847 // which viewInvalidate() does for us 4848 viewInvalidate(r.left, r.top, r.right, r.bottom); 4849 } 4850 break; 4851 } 4852 case REQUEST_FORM_DATA: 4853 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 4854 if (mWebTextView.isSameTextField(msg.arg1)) { 4855 mWebTextView.setAdapterCustom(adapter); 4856 } 4857 break; 4858 case UPDATE_CLIPBOARD: 4859 String str = (String) msg.obj; 4860 if (DebugFlags.WEB_VIEW) { 4861 Log.v(LOGTAG, "UPDATE_CLIPBOARD " + str); 4862 } 4863 try { 4864 IClipboard clip = IClipboard.Stub.asInterface( 4865 ServiceManager.getService("clipboard")); 4866 clip.setClipboardText(str); 4867 } catch (android.os.RemoteException e) { 4868 Log.e(LOGTAG, "Clipboard failed", e); 4869 } 4870 break; 4871 case RESUME_WEBCORE_UPDATE: 4872 WebViewCore.resumeUpdate(mWebViewCore); 4873 break; 4874 4875 case LONG_PRESS_CENTER: 4876 // as this is shared by keydown and trackballdown, reset all 4877 // the states 4878 mGotCenterDown = false; 4879 mTrackballDown = false; 4880 // LONG_PRESS_CENTER is sent as a delayed message. If we 4881 // switch to windows overview, the WebView will be 4882 // temporarily removed from the view system. In that case, 4883 // do nothing. 4884 if (getParent() != null) { 4885 performLongClick(); 4886 } 4887 break; 4888 4889 case WEBCORE_NEED_TOUCH_EVENTS: 4890 mForwardTouchEvents = (msg.arg1 != 0); 4891 break; 4892 4893 case PREVENT_TOUCH_ID: 4894 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 4895 mPreventDrag = msg.arg2 == 1; 4896 if (mPreventDrag) { 4897 mTouchMode = TOUCH_DONE_MODE; 4898 } 4899 } 4900 break; 4901 4902 default: 4903 super.handleMessage(msg); 4904 break; 4905 } 4906 } 4907 } 4908 4909 // Class used to use a dropdown for a <select> element 4910 private class InvokeListBox implements Runnable { 4911 // Whether the listbox allows multiple selection. 4912 private boolean mMultiple; 4913 // Passed in to a list with multiple selection to tell 4914 // which items are selected. 4915 private int[] mSelectedArray; 4916 // Passed in to a list with single selection to tell 4917 // where the initial selection is. 4918 private int mSelection; 4919 4920 private Container[] mContainers; 4921 4922 // Need these to provide stable ids to my ArrayAdapter, 4923 // which normally does not have stable ids. (Bug 1250098) 4924 private class Container extends Object { 4925 String mString; 4926 boolean mEnabled; 4927 int mId; 4928 4929 public String toString() { 4930 return mString; 4931 } 4932 } 4933 4934 /** 4935 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 4936 * and allow filtering. 4937 */ 4938 private class MyArrayListAdapter extends ArrayAdapter<Container> { 4939 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 4940 super(context, 4941 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 4942 com.android.internal.R.layout.select_dialog_singlechoice, 4943 objects); 4944 } 4945 4946 @Override 4947 public boolean hasStableIds() { 4948 // AdapterView's onChanged method uses this to determine whether 4949 // to restore the old state. Return false so that the old (out 4950 // of date) state does not replace the new, valid state. 4951 return false; 4952 } 4953 4954 private Container item(int position) { 4955 if (position < 0 || position >= getCount()) { 4956 return null; 4957 } 4958 return (Container) getItem(position); 4959 } 4960 4961 @Override 4962 public long getItemId(int position) { 4963 Container item = item(position); 4964 if (item == null) { 4965 return -1; 4966 } 4967 return item.mId; 4968 } 4969 4970 @Override 4971 public boolean areAllItemsEnabled() { 4972 return false; 4973 } 4974 4975 @Override 4976 public boolean isEnabled(int position) { 4977 Container item = item(position); 4978 if (item == null) { 4979 return false; 4980 } 4981 return item.mEnabled; 4982 } 4983 } 4984 4985 private InvokeListBox(String[] array, 4986 boolean[] enabled, int[] selected) { 4987 mMultiple = true; 4988 mSelectedArray = selected; 4989 4990 int length = array.length; 4991 mContainers = new Container[length]; 4992 for (int i = 0; i < length; i++) { 4993 mContainers[i] = new Container(); 4994 mContainers[i].mString = array[i]; 4995 mContainers[i].mEnabled = enabled[i]; 4996 mContainers[i].mId = i; 4997 } 4998 } 4999 5000 private InvokeListBox(String[] array, boolean[] enabled, int 5001 selection) { 5002 mSelection = selection; 5003 mMultiple = false; 5004 5005 int length = array.length; 5006 mContainers = new Container[length]; 5007 for (int i = 0; i < length; i++) { 5008 mContainers[i] = new Container(); 5009 mContainers[i].mString = array[i]; 5010 mContainers[i].mEnabled = enabled[i]; 5011 mContainers[i].mId = i; 5012 } 5013 } 5014 5015 /* 5016 * Whenever the data set changes due to filtering, this class ensures 5017 * that the checked item remains checked. 5018 */ 5019 private class SingleDataSetObserver extends DataSetObserver { 5020 private long mCheckedId; 5021 private ListView mListView; 5022 private Adapter mAdapter; 5023 5024 /* 5025 * Create a new observer. 5026 * @param id The ID of the item to keep checked. 5027 * @param l ListView for getting and clearing the checked states 5028 * @param a Adapter for getting the IDs 5029 */ 5030 public SingleDataSetObserver(long id, ListView l, Adapter a) { 5031 mCheckedId = id; 5032 mListView = l; 5033 mAdapter = a; 5034 } 5035 5036 public void onChanged() { 5037 // The filter may have changed which item is checked. Find the 5038 // item that the ListView thinks is checked. 5039 int position = mListView.getCheckedItemPosition(); 5040 long id = mAdapter.getItemId(position); 5041 if (mCheckedId != id) { 5042 // Clear the ListView's idea of the checked item, since 5043 // it is incorrect 5044 mListView.clearChoices(); 5045 // Search for mCheckedId. If it is in the filtered list, 5046 // mark it as checked 5047 int count = mAdapter.getCount(); 5048 for (int i = 0; i < count; i++) { 5049 if (mAdapter.getItemId(i) == mCheckedId) { 5050 mListView.setItemChecked(i, true); 5051 break; 5052 } 5053 } 5054 } 5055 } 5056 5057 public void onInvalidate() {} 5058 } 5059 5060 public void run() { 5061 final ListView listView = (ListView) LayoutInflater.from(mContext) 5062 .inflate(com.android.internal.R.layout.select_dialog, null); 5063 final MyArrayListAdapter adapter = new 5064 MyArrayListAdapter(mContext, mContainers, mMultiple); 5065 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 5066 .setView(listView).setCancelable(true) 5067 .setInverseBackgroundForced(true); 5068 5069 if (mMultiple) { 5070 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 5071 public void onClick(DialogInterface dialog, int which) { 5072 mWebViewCore.sendMessage( 5073 EventHub.LISTBOX_CHOICES, 5074 adapter.getCount(), 0, 5075 listView.getCheckedItemPositions()); 5076 }}); 5077 b.setNegativeButton(android.R.string.cancel, 5078 new DialogInterface.OnClickListener() { 5079 public void onClick(DialogInterface dialog, int which) { 5080 mWebViewCore.sendMessage( 5081 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5082 }}); 5083 } 5084 final AlertDialog dialog = b.create(); 5085 listView.setAdapter(adapter); 5086 listView.setFocusableInTouchMode(true); 5087 // There is a bug (1250103) where the checks in a ListView with 5088 // multiple items selected are associated with the positions, not 5089 // the ids, so the items do not properly retain their checks when 5090 // filtered. Do not allow filtering on multiple lists until 5091 // that bug is fixed. 5092 5093 listView.setTextFilterEnabled(!mMultiple); 5094 if (mMultiple) { 5095 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 5096 int length = mSelectedArray.length; 5097 for (int i = 0; i < length; i++) { 5098 listView.setItemChecked(mSelectedArray[i], true); 5099 } 5100 } else { 5101 listView.setOnItemClickListener(new OnItemClickListener() { 5102 public void onItemClick(AdapterView parent, View v, 5103 int position, long id) { 5104 mWebViewCore.sendMessage( 5105 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 5106 dialog.dismiss(); 5107 } 5108 }); 5109 if (mSelection != -1) { 5110 listView.setSelection(mSelection); 5111 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 5112 listView.setItemChecked(mSelection, true); 5113 DataSetObserver observer = new SingleDataSetObserver( 5114 adapter.getItemId(mSelection), listView, adapter); 5115 adapter.registerDataSetObserver(observer); 5116 } 5117 } 5118 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 5119 public void onCancel(DialogInterface dialog) { 5120 mWebViewCore.sendMessage( 5121 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5122 } 5123 }); 5124 dialog.show(); 5125 } 5126 } 5127 5128 /* 5129 * Request a dropdown menu for a listbox with multiple selection. 5130 * 5131 * @param array Labels for the listbox. 5132 * @param enabledArray Which positions are enabled. 5133 * @param selectedArray Which positions are initally selected. 5134 */ 5135 void requestListBox(String[] array, boolean[]enabledArray, int[] 5136 selectedArray) { 5137 mPrivateHandler.post( 5138 new InvokeListBox(array, enabledArray, selectedArray)); 5139 } 5140 5141 /* 5142 * Request a dropdown menu for a listbox with single selection or a single 5143 * <select> element. 5144 * 5145 * @param array Labels for the listbox. 5146 * @param enabledArray Which positions are enabled. 5147 * @param selection Which position is initally selected. 5148 */ 5149 void requestListBox(String[] array, boolean[]enabledArray, int selection) { 5150 mPrivateHandler.post( 5151 new InvokeListBox(array, enabledArray, selection)); 5152 } 5153 5154 // called by JNI 5155 private void sendMoveMouse(int frame, int node, int x, int y) { 5156 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 5157 new WebViewCore.CursorData(frame, node, x, y)); 5158 } 5159 5160 // called by JNI 5161 private void sendMoveMouseIfLatest(boolean setFocusControllerInactive) { 5162 if (setFocusControllerInactive) { 5163 setFocusControllerInactive(); 5164 } 5165 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, cursorData()); 5166 } 5167 5168 // called by JNI 5169 private void sendMotionUp(int touchGeneration, 5170 int frame, int node, int x, int y, int size) { 5171 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5172 touchUpData.mMoveGeneration = touchGeneration; 5173 touchUpData.mSize = size; 5174 touchUpData.mFrame = frame; 5175 touchUpData.mNode = node; 5176 touchUpData.mX = x; 5177 touchUpData.mY = y; 5178 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5179 } 5180 5181 5182 private int getScaledMaxXScroll() { 5183 int width; 5184 if (mHeightCanMeasure == false) { 5185 width = getViewWidth() / 4; 5186 } else { 5187 Rect visRect = new Rect(); 5188 calcOurVisibleRect(visRect); 5189 width = visRect.width() / 2; 5190 } 5191 // FIXME the divisor should be retrieved from somewhere 5192 return viewToContent(width); 5193 } 5194 5195 private int getScaledMaxYScroll() { 5196 int height; 5197 if (mHeightCanMeasure == false) { 5198 height = getViewHeight() / 4; 5199 } else { 5200 Rect visRect = new Rect(); 5201 calcOurVisibleRect(visRect); 5202 height = visRect.height() / 2; 5203 } 5204 // FIXME the divisor should be retrieved from somewhere 5205 // the closest thing today is hard-coded into ScrollView.java 5206 // (from ScrollView.java, line 363) int maxJump = height/2; 5207 return viewToContent(height); 5208 } 5209 5210 /** 5211 * Called by JNI to invalidate view 5212 */ 5213 private void viewInvalidate() { 5214 invalidate(); 5215 } 5216 5217 // return true if the key was handled 5218 private boolean navHandledKey(int keyCode, int count, boolean noScroll 5219 , long time) { 5220 if (mNativeClass == 0) { 5221 return false; 5222 } 5223 mLastCursorTime = time; 5224 mLastCursorBounds = nativeGetCursorRingBounds(); 5225 boolean keyHandled 5226 = nativeMoveCursor(keyCode, count, noScroll) == false; 5227 if (DebugFlags.WEB_VIEW) { 5228 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 5229 + " mLastCursorTime=" + mLastCursorTime 5230 + " handled=" + keyHandled); 5231 } 5232 if (keyHandled == false || mHeightCanMeasure == false) { 5233 return keyHandled; 5234 } 5235 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 5236 if (contentCursorRingBounds.isEmpty()) return keyHandled; 5237 Rect viewCursorRingBounds = contentToView(contentCursorRingBounds); 5238 Rect visRect = new Rect(); 5239 calcOurVisibleRect(visRect); 5240 Rect outset = new Rect(visRect); 5241 int maxXScroll = visRect.width() / 2; 5242 int maxYScroll = visRect.height() / 2; 5243 outset.inset(-maxXScroll, -maxYScroll); 5244 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 5245 return keyHandled; 5246 } 5247 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 5248 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 5249 maxXScroll); 5250 if (maxH > 0) { 5251 pinScrollBy(maxH, 0, true, 0); 5252 } else { 5253 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 5254 -maxXScroll); 5255 if (maxH < 0) { 5256 pinScrollBy(maxH, 0, true, 0); 5257 } 5258 } 5259 if (mLastCursorBounds.isEmpty()) return keyHandled; 5260 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 5261 return keyHandled; 5262 } 5263 if (DebugFlags.WEB_VIEW) { 5264 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 5265 + contentCursorRingBounds); 5266 } 5267 requestRectangleOnScreen(viewCursorRingBounds); 5268 mUserScroll = true; 5269 return keyHandled; 5270 } 5271 5272 /** 5273 * Set the background color. It's white by default. Pass 5274 * zero to make the view transparent. 5275 * @param color the ARGB color described by Color.java 5276 */ 5277 public void setBackgroundColor(int color) { 5278 mBackgroundColor = color; 5279 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 5280 } 5281 5282 public void debugDump() { 5283 nativeDebugDump(); 5284 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 5285 } 5286 5287 /** 5288 * Update our cache with updatedText. 5289 * @param updatedText The new text to put in our cache. 5290 */ 5291 /* package */ void updateCachedTextfield(String updatedText) { 5292 // Also place our generation number so that when we look at the cache 5293 // we recognize that it is up to date. 5294 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 5295 } 5296 5297 private native void nativeClearCursor(); 5298 private native void nativeCreate(int ptr); 5299 private native int nativeCursorFramePointer(); 5300 private native Rect nativeCursorNodeBounds(); 5301 /* package */ native int nativeCursorNodePointer(); 5302 /* package */ native boolean nativeCursorMatchesFocus(); 5303 private native boolean nativeCursorIntersects(Rect visibleRect); 5304 private native boolean nativeCursorIsAnchor(); 5305 private native boolean nativeCursorIsTextInput(); 5306 private native Point nativeCursorPosition(); 5307 private native String nativeCursorText(); 5308 /** 5309 * Returns true if the native cursor node says it wants to handle key events 5310 * (ala plugins). This can only be called if mNativeClass is non-zero! 5311 */ 5312 private native boolean nativeCursorWantsKeyEvents(); 5313 private native void nativeDebugDump(); 5314 private native void nativeDestroy(); 5315 private native void nativeDrawCursorRing(Canvas content); 5316 private native void nativeDrawMatches(Canvas canvas); 5317 private native void nativeDrawSelection(Canvas content 5318 , int x, int y, boolean extendSelection); 5319 private native void nativeDrawSelectionRegion(Canvas content); 5320 private native void nativeDumpDisplayTree(String urlOrNull); 5321 private native int nativeFindAll(String findLower, String findUpper); 5322 private native void nativeFindNext(boolean forward); 5323 private native boolean nativeFocusCandidateIsPassword(); 5324 private native boolean nativeFocusCandidateIsRtlText(); 5325 private native boolean nativeFocusCandidateIsTextField(); 5326 private native boolean nativeFocusCandidateIsTextInput(); 5327 private native int nativeFocusCandidateMaxLength(); 5328 private native String nativeFocusCandidateName(); 5329 private native Rect nativeFocusCandidateNodeBounds(); 5330 /* package */ native int nativeFocusCandidatePointer(); 5331 private native String nativeFocusCandidateText(); 5332 private native int nativeFocusCandidateTextSize(); 5333 private native Rect nativeGetCursorRingBounds(); 5334 private native Region nativeGetSelection(); 5335 private native boolean nativeHasCursorNode(); 5336 private native boolean nativeHasFocusNode(); 5337 private native void nativeHideCursor(); 5338 private native String nativeImageURI(int x, int y); 5339 private native void nativeInstrumentReport(); 5340 // return true if the page has been scrolled 5341 private native boolean nativeMotionUp(int x, int y, int slop); 5342 // returns false if it handled the key 5343 private native boolean nativeMoveCursor(int keyCode, int count, 5344 boolean noScroll); 5345 private native int nativeMoveGeneration(); 5346 private native void nativeMoveSelection(int x, int y, 5347 boolean extendSelection); 5348 // Like many other of our native methods, you must make sure that 5349 // mNativeClass is not null before calling this method. 5350 private native void nativeRecordButtons(boolean focused, 5351 boolean pressed, boolean invalidate); 5352 private native void nativeSelectBestAt(Rect rect); 5353 private native void nativeSetFindIsDown(); 5354 private native void nativeSetFollowedLink(boolean followed); 5355 private native void nativeSetHeightCanMeasure(boolean measure); 5356 private native int nativeTextGeneration(); 5357 // Never call this version except by updateCachedTextfield(String) - 5358 // we always want to pass in our generation number. 5359 private native void nativeUpdateCachedTextfield(String updatedText, 5360 int generation); 5361 5362} 5363