WebView.java revision dd8174928c9c2966b1491acd604612a3b38e600a
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.graphics.drawable.Drawable; 35import android.net.http.SslCertificate; 36import android.net.Uri; 37import android.os.Bundle; 38import android.os.Handler; 39import android.os.Message; 40import android.os.ServiceManager; 41import android.os.SystemClock; 42import android.provider.Checkin; 43import android.text.IClipboard; 44import android.text.Selection; 45import android.text.Spannable; 46import android.util.AttributeSet; 47import android.util.EventLog; 48import android.util.Log; 49import android.util.TypedValue; 50import android.view.Gravity; 51import android.view.KeyEvent; 52import android.view.LayoutInflater; 53import android.view.MotionEvent; 54import android.view.SoundEffectConstants; 55import android.view.VelocityTracker; 56import android.view.View; 57import android.view.ViewConfiguration; 58import android.view.ViewGroup; 59import android.view.ViewParent; 60import android.view.ViewTreeObserver; 61import android.view.animation.AlphaAnimation; 62import android.view.inputmethod.EditorInfo; 63import android.view.inputmethod.InputMethodManager; 64import android.webkit.WebTextView.AutoCompleteAdapter; 65import android.webkit.WebViewCore.EventHub; 66import android.widget.AbsoluteLayout; 67import android.widget.Adapter; 68import android.widget.AdapterView; 69import android.widget.ArrayAdapter; 70import android.widget.FrameLayout; 71import android.widget.ImageView; 72import android.widget.ListView; 73import android.widget.ScrollBarDrawable; 74import android.widget.Scroller; 75import android.widget.Toast; 76import android.widget.ZoomButtonsController; 77import android.widget.ZoomControls; 78import android.widget.AdapterView.OnItemClickListener; 79 80import java.io.File; 81import java.io.FileInputStream; 82import java.io.FileNotFoundException; 83import java.io.FileOutputStream; 84import java.io.IOException; 85import java.net.URLDecoder; 86import java.util.ArrayList; 87import java.util.List; 88import java.util.Map; 89 90/** 91 * <p>A View that displays web pages. This class is the basis upon which you 92 * can roll your own web browser or simply display some online content within your Activity. 93 * It uses the WebKit rendering engine to display 94 * web pages and includes methods to navigate forward and backward 95 * through a history, zoom in and out, perform text searches and more.</p> 96 * <p>To enable the built-in zoom, set 97 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 98 * (introduced in API version 3). 99 * <p>Note that, in order for your Activity to access the Internet and load web pages 100 * in a WebView, you must add the <var>INTERNET</var> permissions to your 101 * Android Manifest file:</p> 102 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 103 * 104 * <p>This must be a child of the <code><manifest></code> element.</p> 105 * 106 * <h3>Basic usage</h3> 107 * 108 * <p>By default, a WebView provides no browser-like widgets, does not 109 * enable JavaScript and errors will be ignored. If your goal is only 110 * to display some HTML as a part of your UI, this is probably fine; 111 * the user won't need to interact with the web page beyond reading 112 * it, and the web page won't need to interact with the user. If you 113 * actually want a fully blown web browser, then you probably want to 114 * invoke the Browser application with your URL rather than show it 115 * with a WebView. See {@link android.content.Intent} for more information.</p> 116 * 117 * <pre class="prettyprint"> 118 * WebView webview = new WebView(this); 119 * setContentView(webview); 120 * 121 * // Simplest usage: note that an exception will NOT be thrown 122 * // if there is an error loading this page (see below). 123 * webview.loadUrl("http://slashdot.org/"); 124 * 125 * // Of course you can also load from any string: 126 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 127 * webview.loadData(summary, "text/html", "utf-8"); 128 * // ... although note that there are restrictions on what this HTML can do. 129 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 130 * </pre> 131 * 132 * <p>A WebView has several customization points where you can add your 133 * own behavior. These are:</p> 134 * 135 * <ul> 136 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 137 * This class is called when something that might impact a 138 * browser UI happens, for instance, progress updates and 139 * JavaScript alerts are sent here. 140 * </li> 141 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 142 * It will be called when things happen that impact the 143 * rendering of the content, eg, errors or form submissions. You 144 * can also intercept URL loading here.</li> 145 * <li>Via the {@link android.webkit.WebSettings} class, which contains 146 * miscellaneous configuration. </li> 147 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 148 * This lets you bind Java objects into the WebView so they can be 149 * controlled from the web pages JavaScript.</li> 150 * </ul> 151 * 152 * <p>Here's a more complicated example, showing error handling, 153 * settings, and progress notification:</p> 154 * 155 * <pre class="prettyprint"> 156 * // Let's display the progress in the activity title bar, like the 157 * // browser app does. 158 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 159 * 160 * webview.getSettings().setJavaScriptEnabled(true); 161 * 162 * final Activity activity = this; 163 * webview.setWebChromeClient(new WebChromeClient() { 164 * public void onProgressChanged(WebView view, int progress) { 165 * // Activities and WebViews measure progress with different scales. 166 * // The progress meter will automatically disappear when we reach 100% 167 * activity.setProgress(progress * 1000); 168 * } 169 * }); 170 * webview.setWebViewClient(new WebViewClient() { 171 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 172 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 173 * } 174 * }); 175 * 176 * webview.loadUrl("http://slashdot.org/"); 177 * </pre> 178 * 179 * <h3>Cookie and window management</h3> 180 * 181 * <p>For obvious security reasons, your application has its own 182 * cache, cookie store etc - it does not share the Browser 183 * applications data. Cookies are managed on a separate thread, so 184 * operations like index building don't block the UI 185 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 186 * if you want to use cookies in your application. 187 * </p> 188 * 189 * <p>By default, requests by the HTML to open new windows are 190 * ignored. This is true whether they be opened by JavaScript or by 191 * the target attribute on a link. You can customize your 192 * WebChromeClient to provide your own behaviour for opening multiple windows, 193 * and render them in whatever manner you want.</p> 194 * 195 * <p>Standard behavior for an Activity is to be destroyed and 196 * recreated when the devices orientation is changed. This will cause 197 * the WebView to reload the current page. If you don't want that, you 198 * can set your Activity to handle the orientation and keyboardHidden 199 * changes, and then just leave the WebView alone. It'll automatically 200 * re-orient itself as appropriate.</p> 201 */ 202public class WebView extends AbsoluteLayout 203 implements ViewTreeObserver.OnGlobalFocusChangeListener, 204 ViewGroup.OnHierarchyChangeListener { 205 206 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 207 // the screen all-the-time. Good for profiling our drawing code 208 static private final boolean AUTO_REDRAW_HACK = false; 209 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 210 private boolean mAutoRedraw; 211 212 static final String LOGTAG = "webview"; 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 // Used by WebViewCore to create child views. 312 /* package */ final ViewManager mViewManager; 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 private int mMaximumFling; 350 private float mLastVelocity; 351 private float mLastVelX; 352 private float mLastVelY; 353 354 // use this flag to control whether enabling the new double tap zoom 355 static final boolean ENABLE_DOUBLETAP_ZOOM = true; 356 357 /** 358 * Touch mode 359 */ 360 private int mTouchMode = TOUCH_DONE_MODE; 361 private static final int TOUCH_INIT_MODE = 1; 362 private static final int TOUCH_DRAG_START_MODE = 2; 363 private static final int TOUCH_DRAG_MODE = 3; 364 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 365 private static final int TOUCH_SHORTPRESS_MODE = 5; 366 private static final int TOUCH_DOUBLECLICK_MODE = 6; 367 private static final int TOUCH_DONE_MODE = 7; 368 private static final int TOUCH_SELECT_MODE = 8; 369 // touch mode values specific to scale+scroll 370 private static final int FIRST_SCROLL_ZOOM = 9; 371 private static final int SCROLL_ZOOM_ANIMATION_IN = 9; 372 private static final int SCROLL_ZOOM_ANIMATION_OUT = 10; 373 private static final int SCROLL_ZOOM_OUT = 11; 374 private static final int LAST_SCROLL_ZOOM = 11; 375 // end of touch mode values specific to scale+scroll 376 private static final int TOUCH_DOUBLE_TAP_MODE = 12; 377 378 // Whether to forward the touch events to WebCore 379 private boolean mForwardTouchEvents = false; 380 381 // Whether to prevent drag during touch. The initial value depends on 382 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 383 // take control of touch events unless it says no for touch down event. 384 private boolean mPreventDrag; 385 386 // To keep track of whether the current drag was initiated by a WebTextView, 387 // so that we know not to hide the cursor 388 boolean mDragFromTextInput; 389 390 // Whether or not to draw the cursor ring. 391 private boolean mDrawCursorRing = true; 392 393 // true if onPause has been called (and not onResume) 394 private boolean mIsPaused; 395 396 /** 397 * Customizable constant 398 */ 399 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 400 private int mTouchSlopSquare; 401 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 402 private int mDoubleTapSlopSquare; 403 // pre-computed density adjusted navigation slop 404 private int mNavSlop; 405 // This should be ViewConfiguration.getTapTimeout() 406 // But system time out is 100ms, which is too short for the browser. 407 // In the browser, if it switches out of tap too soon, jump tap won't work. 408 private static final int TAP_TIMEOUT = 200; 409 // This should be ViewConfiguration.getLongPressTimeout() 410 // But system time out is 500ms, which is too short for the browser. 411 // With a short timeout, it's difficult to treat trigger a short press. 412 private static final int LONG_PRESS_TIMEOUT = 1000; 413 // needed to avoid flinging after a pause of no movement 414 private static final int MIN_FLING_TIME = 250; 415 // The time that the Zoom Controls are visible before fading away 416 private static final long ZOOM_CONTROLS_TIMEOUT = 417 ViewConfiguration.getZoomControlsTimeout(); 418 // The amount of content to overlap between two screens when going through 419 // pages with the space bar, in pixels. 420 private static final int PAGE_SCROLL_OVERLAP = 24; 421 422 /** 423 * These prevent calling requestLayout if either dimension is fixed. This 424 * depends on the layout parameters and the measure specs. 425 */ 426 boolean mWidthCanMeasure; 427 boolean mHeightCanMeasure; 428 429 // Remember the last dimensions we sent to the native side so we can avoid 430 // sending the same dimensions more than once. 431 int mLastWidthSent; 432 int mLastHeightSent; 433 434 private int mContentWidth; // cache of value from WebViewCore 435 private int mContentHeight; // cache of value from WebViewCore 436 437 // Need to have the separate control for horizontal and vertical scrollbar 438 // style than the View's single scrollbar style 439 private boolean mOverlayHorizontalScrollbar = true; 440 private boolean mOverlayVerticalScrollbar = false; 441 442 // our standard speed. this way small distances will be traversed in less 443 // time than large distances, but we cap the duration, so that very large 444 // distances won't take too long to get there. 445 private static final int STD_SPEED = 480; // pixels per second 446 // time for the longest scroll animation 447 private static final int MAX_DURATION = 750; // milliseconds 448 private Scroller mScroller; 449 450 private boolean mWrapContent; 451 452 /** 453 * Private message ids 454 */ 455 private static final int REMEMBER_PASSWORD = 1; 456 private static final int NEVER_REMEMBER_PASSWORD = 2; 457 private static final int SWITCH_TO_SHORTPRESS = 3; 458 private static final int SWITCH_TO_LONGPRESS = 4; 459 private static final int RELEASE_SINGLE_TAP = 5; 460 private static final int REQUEST_FORM_DATA = 6; 461 private static final int RESUME_WEBCORE_UPDATE = 7; 462 463 //! arg1=x, arg2=y 464 static final int SCROLL_TO_MSG_ID = 10; 465 static final int SCROLL_BY_MSG_ID = 11; 466 //! arg1=x, arg2=y 467 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 468 //! arg1=x, arg2=y 469 static final int SYNC_SCROLL_TO_MSG_ID = 13; 470 static final int NEW_PICTURE_MSG_ID = 14; 471 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 472 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 473 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 474 static final int MOVE_OUT_OF_PLUGIN = 19; 475 static final int CLEAR_TEXT_ENTRY = 20; 476 static final int UPDATE_TEXT_SELECTION_MSG_ID = 21; 477 static final int UPDATE_CLIPBOARD = 22; 478 static final int LONG_PRESS_CENTER = 23; 479 static final int PREVENT_TOUCH_ID = 24; 480 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 481 // obj=Rect in doc coordinates 482 static final int INVAL_RECT_MSG_ID = 26; 483 static final int REQUEST_KEYBOARD = 27; 484 485 static final String[] HandlerDebugString = { 486 "REMEMBER_PASSWORD", // = 1; 487 "NEVER_REMEMBER_PASSWORD", // = 2; 488 "SWITCH_TO_SHORTPRESS", // = 3; 489 "SWITCH_TO_LONGPRESS", // = 4; 490 "RELEASE_SINGLE_TAP", // = 5; 491 "REQUEST_FORM_DATA", // = 6; 492 "SWITCH_TO_CLICK", // = 7; 493 "RESUME_WEBCORE_UPDATE", // = 8; 494 "9", 495 "SCROLL_TO_MSG_ID", // = 10; 496 "SCROLL_BY_MSG_ID", // = 11; 497 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 498 "SYNC_SCROLL_TO_MSG_ID", // = 13; 499 "NEW_PICTURE_MSG_ID", // = 14; 500 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 501 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 502 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 503 "18", // = 18; 504 "MOVE_OUT_OF_PLUGIN", // = 19; 505 "CLEAR_TEXT_ENTRY", // = 20; 506 "UPDATE_TEXT_SELECTION_MSG_ID", // = 21; 507 "UPDATE_CLIPBOARD", // = 22; 508 "LONG_PRESS_CENTER", // = 23; 509 "PREVENT_TOUCH_ID", // = 24; 510 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 511 "INVAL_RECT_MSG_ID", // = 26; 512 "REQUEST_KEYBOARD" // = 27; 513 }; 514 515 // default scale limit. Depending on the display density 516 private static float DEFAULT_MAX_ZOOM_SCALE; 517 private static float DEFAULT_MIN_ZOOM_SCALE; 518 // scale limit, which can be set through viewport meta tag in the web page 519 private float mMaxZoomScale; 520 private float mMinZoomScale; 521 private boolean mMinZoomScaleFixed = true; 522 523 // initial scale in percent. 0 means using default. 524 private int mInitialScale = 0; 525 526 // while in the zoom overview mode, the page's width is fully fit to the 527 // current window. The page is alive, in another words, you can click to 528 // follow the links. Double tap will toggle between zoom overview mode and 529 // the last zoom scale. 530 boolean mInZoomOverview = false; 531 532 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 533 // engadget always have wider mContentWidth no matter what viewport size is. 534 int mZoomOverviewWidth = WebViewCore.DEFAULT_VIEWPORT_WIDTH; 535 float mLastScale; 536 537 // default scale. Depending on the display density. 538 static int DEFAULT_SCALE_PERCENT; 539 private float mDefaultScale; 540 541 // set to true temporarily while the zoom control is being dragged 542 private boolean mPreviewZoomOnly = false; 543 544 // computed scale and inverse, from mZoomWidth. 545 private float mActualScale; 546 private float mInvActualScale; 547 // if this is non-zero, it is used on drawing rather than mActualScale 548 private float mZoomScale; 549 private float mInvInitialZoomScale; 550 private float mInvFinalZoomScale; 551 private int mInitialScrollX; 552 private int mInitialScrollY; 553 private long mZoomStart; 554 private static final int ZOOM_ANIMATION_LENGTH = 500; 555 556 private boolean mUserScroll = false; 557 558 private int mSnapScrollMode = SNAP_NONE; 559 private static final int SNAP_NONE = 1; 560 private static final int SNAP_X = 2; 561 private static final int SNAP_Y = 3; 562 private static final int SNAP_X_LOCK = 4; 563 private static final int SNAP_Y_LOCK = 5; 564 private boolean mSnapPositive; 565 566 // Used to match key downs and key ups 567 private boolean mGotKeyDown; 568 569 /* package */ static boolean mLogEvent = true; 570 private static final int EVENT_LOG_ZOOM_LEVEL_CHANGE = 70101; 571 private static final int EVENT_LOG_DOUBLE_TAP_DURATION = 70102; 572 573 // for event log 574 private long mLastTouchUpTime = 0; 575 576 /** 577 * URI scheme for telephone number 578 */ 579 public static final String SCHEME_TEL = "tel:"; 580 /** 581 * URI scheme for email address 582 */ 583 public static final String SCHEME_MAILTO = "mailto:"; 584 /** 585 * URI scheme for map address 586 */ 587 public static final String SCHEME_GEO = "geo:0,0?q="; 588 589 private int mBackgroundColor = Color.WHITE; 590 591 // Used to notify listeners of a new picture. 592 private PictureListener mPictureListener; 593 /** 594 * Interface to listen for new pictures as they change. 595 */ 596 public interface PictureListener { 597 /** 598 * Notify the listener that the picture has changed. 599 * @param view The WebView that owns the picture. 600 * @param picture The new picture. 601 */ 602 public void onNewPicture(WebView view, Picture picture); 603 } 604 605 // FIXME: Want to make this public, but need to change the API file. 606 public /*static*/ class HitTestResult { 607 /** 608 * Default HitTestResult, where the target is unknown 609 */ 610 public static final int UNKNOWN_TYPE = 0; 611 /** 612 * HitTestResult for hitting a HTML::a tag 613 */ 614 public static final int ANCHOR_TYPE = 1; 615 /** 616 * HitTestResult for hitting a phone number 617 */ 618 public static final int PHONE_TYPE = 2; 619 /** 620 * HitTestResult for hitting a map address 621 */ 622 public static final int GEO_TYPE = 3; 623 /** 624 * HitTestResult for hitting an email address 625 */ 626 public static final int EMAIL_TYPE = 4; 627 /** 628 * HitTestResult for hitting an HTML::img tag 629 */ 630 public static final int IMAGE_TYPE = 5; 631 /** 632 * HitTestResult for hitting a HTML::a tag which contains HTML::img 633 */ 634 public static final int IMAGE_ANCHOR_TYPE = 6; 635 /** 636 * HitTestResult for hitting a HTML::a tag with src=http 637 */ 638 public static final int SRC_ANCHOR_TYPE = 7; 639 /** 640 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 641 */ 642 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 643 /** 644 * HitTestResult for hitting an edit text area 645 */ 646 public static final int EDIT_TEXT_TYPE = 9; 647 648 private int mType; 649 private String mExtra; 650 651 HitTestResult() { 652 mType = UNKNOWN_TYPE; 653 } 654 655 private void setType(int type) { 656 mType = type; 657 } 658 659 private void setExtra(String extra) { 660 mExtra = extra; 661 } 662 663 public int getType() { 664 return mType; 665 } 666 667 public String getExtra() { 668 return mExtra; 669 } 670 } 671 672 // The View containing the zoom controls 673 private ExtendedZoomControls mZoomControls; 674 private Runnable mZoomControlRunnable; 675 676 private ZoomButtonsController mZoomButtonsController; 677 678 // These keep track of the center point of the zoom. They are used to 679 // determine the point around which we should zoom. 680 private float mZoomCenterX; 681 private float mZoomCenterY; 682 683 private ZoomButtonsController.OnZoomListener mZoomListener = 684 new ZoomButtonsController.OnZoomListener() { 685 686 public void onVisibilityChanged(boolean visible) { 687 if (visible) { 688 switchOutDrawHistory(); 689 updateZoomButtonsEnabled(); 690 } 691 } 692 693 public void onZoom(boolean zoomIn) { 694 if (zoomIn) { 695 zoomIn(); 696 } else { 697 zoomOut(); 698 } 699 700 updateZoomButtonsEnabled(); 701 } 702 }; 703 704 /** 705 * Construct a new WebView with a Context object. 706 * @param context A Context object used to access application assets. 707 */ 708 public WebView(Context context) { 709 this(context, null); 710 } 711 712 /** 713 * Construct a new WebView with layout parameters. 714 * @param context A Context object used to access application assets. 715 * @param attrs An AttributeSet passed to our parent. 716 */ 717 public WebView(Context context, AttributeSet attrs) { 718 this(context, attrs, com.android.internal.R.attr.webViewStyle); 719 } 720 721 /** 722 * Construct a new WebView with layout parameters and a default style. 723 * @param context A Context object used to access application assets. 724 * @param attrs An AttributeSet passed to our parent. 725 * @param defStyle The default style resource ID. 726 */ 727 public WebView(Context context, AttributeSet attrs, int defStyle) { 728 this(context, attrs, defStyle, null); 729 } 730 731 /** 732 * Construct a new WebView with layout parameters, a default style and a set 733 * of custom Javscript interfaces to be added to the WebView at initialization 734 * time. This guraratees that these interfaces will be available when the JS 735 * context is initialized. 736 * @param context A Context object used to access application assets. 737 * @param attrs An AttributeSet passed to our parent. 738 * @param defStyle The default style resource ID. 739 * @param javascriptInterfaces is a Map of intareface names, as keys, and 740 * object implementing those interfaces, as values. 741 * @hide pending API council approval. 742 */ 743 protected WebView(Context context, AttributeSet attrs, int defStyle, 744 Map<String, Object> javascriptInterfaces) { 745 super(context, attrs, defStyle); 746 init(); 747 748 mCallbackProxy = new CallbackProxy(context, this); 749 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 750 mDatabase = WebViewDatabase.getInstance(context); 751 mScroller = new Scroller(context); 752 753 mViewManager = new ViewManager(this); 754 755 mZoomButtonsController = new ZoomButtonsController(this); 756 mZoomButtonsController.setOnZoomListener(mZoomListener); 757 // ZoomButtonsController positions the buttons at the bottom, but in 758 // the middle. Change their layout parameters so they appear on the 759 // right. 760 View controls = mZoomButtonsController.getZoomControls(); 761 ViewGroup.LayoutParams params = controls.getLayoutParams(); 762 if (params instanceof FrameLayout.LayoutParams) { 763 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 764 params; 765 frameParams.gravity = Gravity.RIGHT; 766 } 767 } 768 769 private void updateZoomButtonsEnabled() { 770 boolean canZoomIn = mActualScale < mMaxZoomScale; 771 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 772 if (!canZoomIn && !canZoomOut) { 773 // Hide the zoom in and out buttons, as well as the fit to page 774 // button, if the page cannot zoom 775 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 776 } else { 777 // Bring back the hidden zoom controls. 778 mZoomButtonsController.getZoomControls() 779 .setVisibility(View.VISIBLE); 780 // Set each one individually, as a page may be able to zoom in 781 // or out. 782 mZoomButtonsController.setZoomInEnabled(canZoomIn); 783 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 784 } 785 } 786 787 private void init() { 788 setWillNotDraw(false); 789 setFocusable(true); 790 setFocusableInTouchMode(true); 791 setClickable(true); 792 setLongClickable(true); 793 794 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 795 int slop = configuration.getScaledTouchSlop(); 796 mTouchSlopSquare = slop * slop; 797 mMinLockSnapReverseDistance = slop; 798 slop = configuration.getScaledDoubleTapSlop(); 799 mDoubleTapSlopSquare = slop * slop; 800 final float density = getContext().getResources().getDisplayMetrics().density; 801 // use one line height, 16 based on our current default font, for how 802 // far we allow a touch be away from the edge of a link 803 mNavSlop = (int) (16 * density); 804 // density adjusted scale factors 805 DEFAULT_SCALE_PERCENT = (int) (100 * density); 806 mDefaultScale = density; 807 mActualScale = density; 808 mInvActualScale = 1 / density; 809 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 810 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 811 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 812 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 813 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 814 } 815 816 /* package */void updateDefaultZoomDensity(int zoomDensity) { 817 final float density = getContext().getResources().getDisplayMetrics().density 818 * 100 / zoomDensity; 819 if (Math.abs(density - mDefaultScale) > 0.01) { 820 float scaleFactor = density / mDefaultScale; 821 // adjust the limits 822 mNavSlop = (int) (16 * density); 823 DEFAULT_SCALE_PERCENT = (int) (100 * density); 824 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 825 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 826 mDefaultScale = density; 827 mMaxZoomScale *= scaleFactor; 828 mMinZoomScale *= scaleFactor; 829 setNewZoomScale(mActualScale * scaleFactor, false); 830 } 831 } 832 833 /* package */ boolean onSavePassword(String schemePlusHost, String username, 834 String password, final Message resumeMsg) { 835 boolean rVal = false; 836 if (resumeMsg == null) { 837 // null resumeMsg implies saving password silently 838 mDatabase.setUsernamePassword(schemePlusHost, username, password); 839 } else { 840 final Message remember = mPrivateHandler.obtainMessage( 841 REMEMBER_PASSWORD); 842 remember.getData().putString("host", schemePlusHost); 843 remember.getData().putString("username", username); 844 remember.getData().putString("password", password); 845 remember.obj = resumeMsg; 846 847 final Message neverRemember = mPrivateHandler.obtainMessage( 848 NEVER_REMEMBER_PASSWORD); 849 neverRemember.getData().putString("host", schemePlusHost); 850 neverRemember.getData().putString("username", username); 851 neverRemember.getData().putString("password", password); 852 neverRemember.obj = resumeMsg; 853 854 new AlertDialog.Builder(getContext()) 855 .setTitle(com.android.internal.R.string.save_password_label) 856 .setMessage(com.android.internal.R.string.save_password_message) 857 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 858 new DialogInterface.OnClickListener() { 859 public void onClick(DialogInterface dialog, int which) { 860 resumeMsg.sendToTarget(); 861 } 862 }) 863 .setNeutralButton(com.android.internal.R.string.save_password_remember, 864 new DialogInterface.OnClickListener() { 865 public void onClick(DialogInterface dialog, int which) { 866 remember.sendToTarget(); 867 } 868 }) 869 .setNegativeButton(com.android.internal.R.string.save_password_never, 870 new DialogInterface.OnClickListener() { 871 public void onClick(DialogInterface dialog, int which) { 872 neverRemember.sendToTarget(); 873 } 874 }) 875 .setOnCancelListener(new OnCancelListener() { 876 public void onCancel(DialogInterface dialog) { 877 resumeMsg.sendToTarget(); 878 } 879 }).show(); 880 // Return true so that WebViewCore will pause while the dialog is 881 // up. 882 rVal = true; 883 } 884 return rVal; 885 } 886 887 @Override 888 public void setScrollBarStyle(int style) { 889 if (style == View.SCROLLBARS_INSIDE_INSET 890 || style == View.SCROLLBARS_OUTSIDE_INSET) { 891 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 892 } else { 893 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 894 } 895 super.setScrollBarStyle(style); 896 } 897 898 /** 899 * Specify whether the horizontal scrollbar has overlay style. 900 * @param overlay TRUE if horizontal scrollbar should have overlay style. 901 */ 902 public void setHorizontalScrollbarOverlay(boolean overlay) { 903 mOverlayHorizontalScrollbar = overlay; 904 } 905 906 /** 907 * Specify whether the vertical scrollbar has overlay style. 908 * @param overlay TRUE if vertical scrollbar should have overlay style. 909 */ 910 public void setVerticalScrollbarOverlay(boolean overlay) { 911 mOverlayVerticalScrollbar = overlay; 912 } 913 914 /** 915 * Return whether horizontal scrollbar has overlay style 916 * @return TRUE if horizontal scrollbar has overlay style. 917 */ 918 public boolean overlayHorizontalScrollbar() { 919 return mOverlayHorizontalScrollbar; 920 } 921 922 /** 923 * Return whether vertical scrollbar has overlay style 924 * @return TRUE if vertical scrollbar has overlay style. 925 */ 926 public boolean overlayVerticalScrollbar() { 927 return mOverlayVerticalScrollbar; 928 } 929 930 /* 931 * Return the width of the view where the content of WebView should render 932 * to. 933 */ 934 private int getViewWidth() { 935 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 936 return getWidth(); 937 } else { 938 return getWidth() - getVerticalScrollbarWidth(); 939 } 940 } 941 942 /* 943 * returns the height of the titlebarview (if any). Does not care about 944 * scrolling 945 */ 946 private int getTitleHeight() { 947 return mTitleBar != null ? mTitleBar.getHeight() : 0; 948 } 949 950 /* 951 * Return the amount of the titlebarview (if any) that is visible 952 */ 953 private int getVisibleTitleHeight() { 954 return Math.max(getTitleHeight() - mScrollY, 0); 955 } 956 957 /* 958 * Return the height of the view where the content of WebView should render 959 * to. Note that this excludes mTitleBar, if there is one. 960 */ 961 private int getViewHeight() { 962 int height = getHeight(); 963 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 964 height -= getHorizontalScrollbarHeight(); 965 } 966 return height - getVisibleTitleHeight(); 967 } 968 969 /** 970 * @return The SSL certificate for the main top-level page or null if 971 * there is no certificate (the site is not secure). 972 */ 973 public SslCertificate getCertificate() { 974 return mCertificate; 975 } 976 977 /** 978 * Sets the SSL certificate for the main top-level page. 979 */ 980 public void setCertificate(SslCertificate certificate) { 981 // here, the certificate can be null (if the site is not secure) 982 mCertificate = certificate; 983 } 984 985 //------------------------------------------------------------------------- 986 // Methods called by activity 987 //------------------------------------------------------------------------- 988 989 /** 990 * Save the username and password for a particular host in the WebView's 991 * internal database. 992 * @param host The host that required the credentials. 993 * @param username The username for the given host. 994 * @param password The password for the given host. 995 */ 996 public void savePassword(String host, String username, String password) { 997 mDatabase.setUsernamePassword(host, username, password); 998 } 999 1000 /** 1001 * Set the HTTP authentication credentials for a given host and realm. 1002 * 1003 * @param host The host for the credentials. 1004 * @param realm The realm for the credentials. 1005 * @param username The username for the password. If it is null, it means 1006 * password can't be saved. 1007 * @param password The password 1008 */ 1009 public void setHttpAuthUsernamePassword(String host, String realm, 1010 String username, String password) { 1011 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1012 } 1013 1014 /** 1015 * Retrieve the HTTP authentication username and password for a given 1016 * host & realm pair 1017 * 1018 * @param host The host for which the credentials apply. 1019 * @param realm The realm for which the credentials apply. 1020 * @return String[] if found, String[0] is username, which can be null and 1021 * String[1] is password. Return null if it can't find anything. 1022 */ 1023 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1024 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1025 } 1026 1027 /** 1028 * Destroy the internal state of the WebView. This method should be called 1029 * after the WebView has been removed from the view system. No other 1030 * methods may be called on a WebView after destroy. 1031 */ 1032 public void destroy() { 1033 clearTextEntry(); 1034 if (mWebViewCore != null) { 1035 // Set the handlers to null before destroying WebViewCore so no 1036 // more messages will be posted. 1037 mCallbackProxy.setWebViewClient(null); 1038 mCallbackProxy.setWebChromeClient(null); 1039 // Tell WebViewCore to destroy itself 1040 WebViewCore webViewCore = mWebViewCore; 1041 mWebViewCore = null; // prevent using partial webViewCore 1042 webViewCore.destroy(); 1043 // Remove any pending messages that might not be serviced yet. 1044 mPrivateHandler.removeCallbacksAndMessages(null); 1045 mCallbackProxy.removeCallbacksAndMessages(null); 1046 // Wake up the WebCore thread just in case it is waiting for a 1047 // javascript dialog. 1048 synchronized (mCallbackProxy) { 1049 mCallbackProxy.notify(); 1050 } 1051 } 1052 if (mNativeClass != 0) { 1053 nativeDestroy(); 1054 mNativeClass = 0; 1055 } 1056 } 1057 1058 /** 1059 * Enables platform notifications of data state and proxy changes. 1060 */ 1061 public static void enablePlatformNotifications() { 1062 Network.enablePlatformNotifications(); 1063 } 1064 1065 /** 1066 * If platform notifications are enabled, this should be called 1067 * from the Activity's onPause() or onStop(). 1068 */ 1069 public static void disablePlatformNotifications() { 1070 Network.disablePlatformNotifications(); 1071 } 1072 1073 /** 1074 * Sets JavaScript engine flags. 1075 * 1076 * @param flags JS engine flags in a String 1077 * 1078 * @hide pending API solidification 1079 */ 1080 public void setJsFlags(String flags) { 1081 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1082 } 1083 1084 /** 1085 * Inform WebView of the network state. This is used to set 1086 * the javascript property window.navigator.isOnline and 1087 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1088 * @param networkUp boolean indicating if network is available 1089 */ 1090 public void setNetworkAvailable(boolean networkUp) { 1091 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1092 networkUp ? 1 : 0, 0); 1093 } 1094 1095 /** 1096 * Save the state of this WebView used in 1097 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1098 * method no longer stores the display data for this WebView. The previous 1099 * behavior could potentially leak files if {@link #restoreState} was never 1100 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1101 * and restoring the display data. 1102 * @param outState The Bundle to store the WebView state. 1103 * @return The same copy of the back/forward list used to save the state. If 1104 * saveState fails, the returned list will be null. 1105 * @see #savePicture 1106 * @see #restorePicture 1107 */ 1108 public WebBackForwardList saveState(Bundle outState) { 1109 if (outState == null) { 1110 return null; 1111 } 1112 // We grab a copy of the back/forward list because a client of WebView 1113 // may have invalidated the history list by calling clearHistory. 1114 WebBackForwardList list = copyBackForwardList(); 1115 final int currentIndex = list.getCurrentIndex(); 1116 final int size = list.getSize(); 1117 // We should fail saving the state if the list is empty or the index is 1118 // not in a valid range. 1119 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1120 return null; 1121 } 1122 outState.putInt("index", currentIndex); 1123 // FIXME: This should just be a byte[][] instead of ArrayList but 1124 // Parcel.java does not have the code to handle multi-dimensional 1125 // arrays. 1126 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1127 for (int i = 0; i < size; i++) { 1128 WebHistoryItem item = list.getItemAtIndex(i); 1129 byte[] data = item.getFlattenedData(); 1130 if (data == null) { 1131 // It would be very odd to not have any data for a given history 1132 // item. And we will fail to rebuild the history list without 1133 // flattened data. 1134 return null; 1135 } 1136 history.add(data); 1137 } 1138 outState.putSerializable("history", history); 1139 if (mCertificate != null) { 1140 outState.putBundle("certificate", 1141 SslCertificate.saveState(mCertificate)); 1142 } 1143 return list; 1144 } 1145 1146 /** 1147 * Save the current display data to the Bundle given. Used in conjunction 1148 * with {@link #saveState}. 1149 * @param b A Bundle to store the display data. 1150 * @param dest The file to store the serialized picture data. Will be 1151 * overwritten with this WebView's picture data. 1152 * @return True if the picture was successfully saved. 1153 */ 1154 public boolean savePicture(Bundle b, File dest) { 1155 if (dest == null || b == null) { 1156 return false; 1157 } 1158 final Picture p = capturePicture(); 1159 try { 1160 final FileOutputStream out = new FileOutputStream(dest); 1161 p.writeToStream(out); 1162 out.close(); 1163 } catch (FileNotFoundException e){ 1164 e.printStackTrace(); 1165 } catch (IOException e) { 1166 e.printStackTrace(); 1167 } catch (RuntimeException e) { 1168 e.printStackTrace(); 1169 } 1170 if (dest.length() > 0) { 1171 b.putInt("scrollX", mScrollX); 1172 b.putInt("scrollY", mScrollY); 1173 b.putFloat("scale", mActualScale); 1174 if (mInZoomOverview) { 1175 b.putFloat("lastScale", mLastScale); 1176 } 1177 return true; 1178 } 1179 return false; 1180 } 1181 1182 /** 1183 * Restore the display data that was save in {@link #savePicture}. Used in 1184 * conjunction with {@link #restoreState}. 1185 * @param b A Bundle containing the saved display data. 1186 * @param src The file where the picture data was stored. 1187 * @return True if the picture was successfully restored. 1188 */ 1189 public boolean restorePicture(Bundle b, File src) { 1190 if (src == null || b == null) { 1191 return false; 1192 } 1193 if (src.exists()) { 1194 Picture p = null; 1195 try { 1196 final FileInputStream in = new FileInputStream(src); 1197 p = Picture.createFromStream(in); 1198 in.close(); 1199 } catch (FileNotFoundException e){ 1200 e.printStackTrace(); 1201 } catch (RuntimeException e) { 1202 e.printStackTrace(); 1203 } catch (IOException e) { 1204 e.printStackTrace(); 1205 } 1206 if (p != null) { 1207 int sx = b.getInt("scrollX", 0); 1208 int sy = b.getInt("scrollY", 0); 1209 float scale = b.getFloat("scale", 1.0f); 1210 mDrawHistory = true; 1211 mHistoryPicture = p; 1212 mScrollX = sx; 1213 mScrollY = sy; 1214 mHistoryWidth = Math.round(p.getWidth() * scale); 1215 mHistoryHeight = Math.round(p.getHeight() * scale); 1216 // as getWidth() / getHeight() of the view are not 1217 // available yet, set up mActualScale, so that when 1218 // onSizeChanged() is called, the rest will be set 1219 // correctly 1220 mActualScale = scale; 1221 float lastScale = b.getFloat("lastScale", -1.0f); 1222 if (lastScale > 0) { 1223 mInZoomOverview = true; 1224 mLastScale = lastScale; 1225 } else { 1226 mInZoomOverview = false; 1227 } 1228 invalidate(); 1229 return true; 1230 } 1231 } 1232 return false; 1233 } 1234 1235 /** 1236 * Restore the state of this WebView from the given map used in 1237 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1238 * be called to restore the state of the WebView before using the object. If 1239 * it is called after the WebView has had a chance to build state (load 1240 * pages, create a back/forward list, etc.) there may be undesirable 1241 * side-effects. Please note that this method no longer restores the 1242 * display data for this WebView. See {@link #savePicture} and {@link 1243 * #restorePicture} for saving and restoring the display data. 1244 * @param inState The incoming Bundle of state. 1245 * @return The restored back/forward list or null if restoreState failed. 1246 * @see #savePicture 1247 * @see #restorePicture 1248 */ 1249 public WebBackForwardList restoreState(Bundle inState) { 1250 WebBackForwardList returnList = null; 1251 if (inState == null) { 1252 return returnList; 1253 } 1254 if (inState.containsKey("index") && inState.containsKey("history")) { 1255 mCertificate = SslCertificate.restoreState( 1256 inState.getBundle("certificate")); 1257 1258 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1259 final int index = inState.getInt("index"); 1260 // We can't use a clone of the list because we need to modify the 1261 // shared copy, so synchronize instead to prevent concurrent 1262 // modifications. 1263 synchronized (list) { 1264 final List<byte[]> history = 1265 (List<byte[]>) inState.getSerializable("history"); 1266 final int size = history.size(); 1267 // Check the index bounds so we don't crash in native code while 1268 // restoring the history index. 1269 if (index < 0 || index >= size) { 1270 return null; 1271 } 1272 for (int i = 0; i < size; i++) { 1273 byte[] data = history.remove(0); 1274 if (data == null) { 1275 // If we somehow have null data, we cannot reconstruct 1276 // the item and thus our history list cannot be rebuilt. 1277 return null; 1278 } 1279 WebHistoryItem item = new WebHistoryItem(data); 1280 list.addHistoryItem(item); 1281 } 1282 // Grab the most recent copy to return to the caller. 1283 returnList = copyBackForwardList(); 1284 // Update the copy to have the correct index. 1285 returnList.setCurrentIndex(index); 1286 } 1287 // Remove all pending messages because we are restoring previous 1288 // state. 1289 mWebViewCore.removeMessages(); 1290 // Send a restore state message. 1291 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1292 } 1293 return returnList; 1294 } 1295 1296 /** 1297 * Load the given url. 1298 * @param url The url of the resource to load. 1299 */ 1300 public void loadUrl(String url) { 1301 if (url == null) { 1302 return; 1303 } 1304 switchOutDrawHistory(); 1305 mWebViewCore.sendMessage(EventHub.LOAD_URL, url); 1306 clearTextEntry(); 1307 } 1308 1309 /** 1310 * Load the url with postData using "POST" method into the WebView. If url 1311 * is not a network url, it will be loaded with {link 1312 * {@link #loadUrl(String)} instead. 1313 * 1314 * @param url The url of the resource to load. 1315 * @param postData The data will be passed to "POST" request. 1316 */ 1317 public void postUrl(String url, byte[] postData) { 1318 if (URLUtil.isNetworkUrl(url)) { 1319 switchOutDrawHistory(); 1320 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1321 arg.mUrl = url; 1322 arg.mPostData = postData; 1323 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1324 clearTextEntry(); 1325 } else { 1326 loadUrl(url); 1327 } 1328 } 1329 1330 /** 1331 * Load the given data into the WebView. This will load the data into 1332 * WebView using the data: scheme. Content loaded through this mechanism 1333 * does not have the ability to load content from the network. 1334 * @param data A String of data in the given encoding. 1335 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1336 * @param encoding The encoding of the data. i.e. utf-8, base64 1337 */ 1338 public void loadData(String data, String mimeType, String encoding) { 1339 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1340 } 1341 1342 /** 1343 * Load the given data into the WebView, use the provided URL as the base 1344 * URL for the content. The base URL is the URL that represents the page 1345 * that is loaded through this interface. As such, it is used for the 1346 * history entry and to resolve any relative URLs. The failUrl is used if 1347 * browser fails to load the data provided. If it is empty or null, and the 1348 * load fails, then no history entry is created. 1349 * <p> 1350 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1351 * files through "file:///android_asset/" for the sub resources is more 1352 * restricted. If you provide null or empty string as baseUrl, you won't be 1353 * able to access asset files. If the baseUrl is anything other than 1354 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1355 * sub resources. 1356 * 1357 * @param baseUrl Url to resolve relative paths with, if null defaults to 1358 * "about:blank" 1359 * @param data A String of data in the given encoding. 1360 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1361 * defaults to "text/html" 1362 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1363 * @param failUrl URL to use if the content fails to load or null. 1364 */ 1365 public void loadDataWithBaseURL(String baseUrl, String data, 1366 String mimeType, String encoding, String failUrl) { 1367 1368 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1369 loadData(data, mimeType, encoding); 1370 return; 1371 } 1372 switchOutDrawHistory(); 1373 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1374 arg.mBaseUrl = baseUrl; 1375 arg.mData = data; 1376 arg.mMimeType = mimeType; 1377 arg.mEncoding = encoding; 1378 arg.mFailUrl = failUrl; 1379 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1380 clearTextEntry(); 1381 } 1382 1383 /** 1384 * Stop the current load. 1385 */ 1386 public void stopLoading() { 1387 // TODO: should we clear all the messages in the queue before sending 1388 // STOP_LOADING? 1389 switchOutDrawHistory(); 1390 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1391 } 1392 1393 /** 1394 * Reload the current url. 1395 */ 1396 public void reload() { 1397 switchOutDrawHistory(); 1398 mWebViewCore.sendMessage(EventHub.RELOAD); 1399 } 1400 1401 /** 1402 * Return true if this WebView has a back history item. 1403 * @return True iff this WebView has a back history item. 1404 */ 1405 public boolean canGoBack() { 1406 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1407 synchronized (l) { 1408 if (l.getClearPending()) { 1409 return false; 1410 } else { 1411 return l.getCurrentIndex() > 0; 1412 } 1413 } 1414 } 1415 1416 /** 1417 * Go back in the history of this WebView. 1418 */ 1419 public void goBack() { 1420 goBackOrForward(-1); 1421 } 1422 1423 /** 1424 * Return true if this WebView has a forward history item. 1425 * @return True iff this Webview has a forward history item. 1426 */ 1427 public boolean canGoForward() { 1428 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1429 synchronized (l) { 1430 if (l.getClearPending()) { 1431 return false; 1432 } else { 1433 return l.getCurrentIndex() < l.getSize() - 1; 1434 } 1435 } 1436 } 1437 1438 /** 1439 * Go forward in the history of this WebView. 1440 */ 1441 public void goForward() { 1442 goBackOrForward(1); 1443 } 1444 1445 /** 1446 * Return true if the page can go back or forward the given 1447 * number of steps. 1448 * @param steps The negative or positive number of steps to move the 1449 * history. 1450 */ 1451 public boolean canGoBackOrForward(int steps) { 1452 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1453 synchronized (l) { 1454 if (l.getClearPending()) { 1455 return false; 1456 } else { 1457 int newIndex = l.getCurrentIndex() + steps; 1458 return newIndex >= 0 && newIndex < l.getSize(); 1459 } 1460 } 1461 } 1462 1463 /** 1464 * Go to the history item that is the number of steps away from 1465 * the current item. Steps is negative if backward and positive 1466 * if forward. 1467 * @param steps The number of steps to take back or forward in the back 1468 * forward list. 1469 */ 1470 public void goBackOrForward(int steps) { 1471 goBackOrForward(steps, false); 1472 } 1473 1474 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1475 // every time we go back or forward, we want to reset the 1476 // WebView certificate: 1477 // if the new site is secure, we will reload it and get a 1478 // new certificate set; 1479 // if the new site is not secure, the certificate must be 1480 // null, and that will be the case 1481 mCertificate = null; 1482 if (steps != 0) { 1483 clearTextEntry(); 1484 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1485 ignoreSnapshot ? 1 : 0); 1486 } 1487 } 1488 1489 private boolean extendScroll(int y) { 1490 int finalY = mScroller.getFinalY(); 1491 int newY = pinLocY(finalY + y); 1492 if (newY == finalY) return false; 1493 mScroller.setFinalY(newY); 1494 mScroller.extendDuration(computeDuration(0, y)); 1495 return true; 1496 } 1497 1498 /** 1499 * Scroll the contents of the view up by half the view size 1500 * @param top true to jump to the top of the page 1501 * @return true if the page was scrolled 1502 */ 1503 public boolean pageUp(boolean top) { 1504 if (mNativeClass == 0) { 1505 return false; 1506 } 1507 nativeClearCursor(); // start next trackball movement from page edge 1508 if (top) { 1509 // go to the top of the document 1510 return pinScrollTo(mScrollX, 0, true, 0); 1511 } 1512 // Page up 1513 int h = getHeight(); 1514 int y; 1515 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1516 y = -h + PAGE_SCROLL_OVERLAP; 1517 } else { 1518 y = -h / 2; 1519 } 1520 mUserScroll = true; 1521 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1522 : extendScroll(y); 1523 } 1524 1525 /** 1526 * Scroll the contents of the view down by half the page size 1527 * @param bottom true to jump to bottom of page 1528 * @return true if the page was scrolled 1529 */ 1530 public boolean pageDown(boolean bottom) { 1531 if (mNativeClass == 0) { 1532 return false; 1533 } 1534 nativeClearCursor(); // start next trackball movement from page edge 1535 if (bottom) { 1536 return pinScrollTo(mScrollX, mContentHeight, true, 0); 1537 } 1538 // Page down. 1539 int h = getHeight(); 1540 int y; 1541 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1542 y = h - PAGE_SCROLL_OVERLAP; 1543 } else { 1544 y = h / 2; 1545 } 1546 mUserScroll = true; 1547 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1548 : extendScroll(y); 1549 } 1550 1551 /** 1552 * Clear the view so that onDraw() will draw nothing but white background, 1553 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1554 */ 1555 public void clearView() { 1556 mContentWidth = 0; 1557 mContentHeight = 0; 1558 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1559 } 1560 1561 /** 1562 * Return a new picture that captures the current display of the webview. 1563 * This is a copy of the display, and will be unaffected if the webview 1564 * later loads a different URL. 1565 * 1566 * @return a picture containing the current contents of the view. Note this 1567 * picture is of the entire document, and is not restricted to the 1568 * bounds of the view. 1569 */ 1570 public Picture capturePicture() { 1571 if (null == mWebViewCore) return null; // check for out of memory tab 1572 return mWebViewCore.copyContentPicture(); 1573 } 1574 1575 /** 1576 * Return true if the browser is displaying a TextView for text input. 1577 */ 1578 private boolean inEditingMode() { 1579 return mWebTextView != null && mWebTextView.getParent() != null 1580 && mWebTextView.hasFocus(); 1581 } 1582 1583 private void clearTextEntry() { 1584 if (inEditingMode()) { 1585 mWebTextView.remove(); 1586 } 1587 } 1588 1589 /** 1590 * Return the current scale of the WebView 1591 * @return The current scale. 1592 */ 1593 public float getScale() { 1594 return mActualScale; 1595 } 1596 1597 /** 1598 * Set the initial scale for the WebView. 0 means default. If 1599 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1600 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1601 * WebView starts will this value as initial scale. 1602 * 1603 * @param scaleInPercent The initial scale in percent. 1604 */ 1605 public void setInitialScale(int scaleInPercent) { 1606 mInitialScale = scaleInPercent; 1607 } 1608 1609 /** 1610 * Invoke the graphical zoom picker widget for this WebView. This will 1611 * result in the zoom widget appearing on the screen to control the zoom 1612 * level of this WebView. 1613 */ 1614 public void invokeZoomPicker() { 1615 if (!getSettings().supportZoom()) { 1616 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1617 return; 1618 } 1619 clearTextEntry(); 1620 if (getSettings().getBuiltInZoomControls()) { 1621 mZoomButtonsController.setVisible(true); 1622 } else { 1623 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1624 mPrivateHandler.postDelayed(mZoomControlRunnable, 1625 ZOOM_CONTROLS_TIMEOUT); 1626 } 1627 } 1628 1629 /** 1630 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1631 * is found and the anchor has a non-javascript url, the HitTestResult type 1632 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1633 * anchor does not have a url or if it is a javascript url, the type will 1634 * be UNKNOWN_TYPE and the url has to be retrieved through 1635 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1636 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1637 * the "extra" field. A type of 1638 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1639 * a child node. If a phone number is found, the HitTestResult type is set 1640 * to PHONE_TYPE and the phone number is set in the "extra" field of 1641 * HitTestResult. If a map address is found, the HitTestResult type is set 1642 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1643 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1644 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1645 * HitTestResult type is set to UNKNOWN_TYPE. 1646 */ 1647 public HitTestResult getHitTestResult() { 1648 if (mNativeClass == 0) { 1649 return null; 1650 } 1651 1652 HitTestResult result = new HitTestResult(); 1653 if (nativeHasCursorNode()) { 1654 if (nativeCursorIsTextInput()) { 1655 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1656 } else { 1657 String text = nativeCursorText(); 1658 if (text != null) { 1659 if (text.startsWith(SCHEME_TEL)) { 1660 result.setType(HitTestResult.PHONE_TYPE); 1661 result.setExtra(text.substring(SCHEME_TEL.length())); 1662 } else if (text.startsWith(SCHEME_MAILTO)) { 1663 result.setType(HitTestResult.EMAIL_TYPE); 1664 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1665 } else if (text.startsWith(SCHEME_GEO)) { 1666 result.setType(HitTestResult.GEO_TYPE); 1667 result.setExtra(URLDecoder.decode(text 1668 .substring(SCHEME_GEO.length()))); 1669 } else if (nativeCursorIsAnchor()) { 1670 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1671 result.setExtra(text); 1672 } 1673 } 1674 } 1675 } 1676 int type = result.getType(); 1677 if (type == HitTestResult.UNKNOWN_TYPE 1678 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1679 // Now check to see if it is an image. 1680 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1681 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1682 String text = nativeImageURI(contentX, contentY); 1683 if (text != null) { 1684 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1685 HitTestResult.IMAGE_TYPE : 1686 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1687 result.setExtra(text); 1688 } 1689 } 1690 return result; 1691 } 1692 1693 /** 1694 * Request the href of an anchor element due to getFocusNodePath returning 1695 * "href." If hrefMsg is null, this method returns immediately and does not 1696 * dispatch hrefMsg to its target. 1697 * 1698 * @param hrefMsg This message will be dispatched with the result of the 1699 * request as the data member with "url" as key. The result can 1700 * be null. 1701 */ 1702 // FIXME: API change required to change the name of this function. We now 1703 // look at the cursor node, and not the focus node. Also, what is 1704 // getFocusNodePath? 1705 public void requestFocusNodeHref(Message hrefMsg) { 1706 if (hrefMsg == null || mNativeClass == 0) { 1707 return; 1708 } 1709 if (nativeCursorIsAnchor()) { 1710 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1711 nativeCursorFramePointer(), nativeCursorNodePointer(), 1712 hrefMsg); 1713 } 1714 } 1715 1716 /** 1717 * Request the url of the image last touched by the user. msg will be sent 1718 * to its target with a String representing the url as its object. 1719 * 1720 * @param msg This message will be dispatched with the result of the request 1721 * as the data member with "url" as key. The result can be null. 1722 */ 1723 public void requestImageRef(Message msg) { 1724 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1725 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1726 String ref = nativeImageURI(contentX, contentY); 1727 Bundle data = msg.getData(); 1728 data.putString("url", ref); 1729 msg.setData(data); 1730 msg.sendToTarget(); 1731 } 1732 1733 private static int pinLoc(int x, int viewMax, int docMax) { 1734// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1735 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1736 // pin the short document to the top/left of the screen 1737 x = 0; 1738// Log.d(LOGTAG, "--- center " + x); 1739 } else if (x < 0) { 1740 x = 0; 1741// Log.d(LOGTAG, "--- zero"); 1742 } else if (x + viewMax > docMax) { 1743 x = docMax - viewMax; 1744// Log.d(LOGTAG, "--- pin " + x); 1745 } 1746 return x; 1747 } 1748 1749 // Expects x in view coordinates 1750 private int pinLocX(int x) { 1751 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1752 } 1753 1754 // Expects y in view coordinates 1755 private int pinLocY(int y) { 1756 int titleH = getTitleHeight(); 1757 // if the titlebar is still visible, just pin against 0 1758 if (y <= titleH) { 1759 return Math.max(y, 0); 1760 } 1761 // convert to 0-based coordinate (subtract the title height) 1762 // pin(), and then add the title height back in 1763 return pinLoc(y - titleH, getViewHeight(), 1764 computeVerticalScrollRange()) + titleH; 1765 } 1766 1767 /** 1768 * A title bar which is embedded in this WebView, and scrolls along with it 1769 * vertically, but not horizontally. 1770 */ 1771 private View mTitleBar; 1772 1773 /** 1774 * Add or remove a title bar to be embedded into the WebView, and scroll 1775 * along with it vertically, while remaining in view horizontally. Pass 1776 * null to remove the title bar from the WebView, and return to drawing 1777 * the WebView normally without translating to account for the title bar. 1778 * @hide 1779 */ 1780 public void setEmbeddedTitleBar(View v) { 1781 if (mTitleBar == v) return; 1782 if (mTitleBar != null) { 1783 removeView(mTitleBar); 1784 } 1785 if (null != v) { 1786 addView(v, new AbsoluteLayout.LayoutParams( 1787 ViewGroup.LayoutParams.FILL_PARENT, 1788 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1789 } 1790 mTitleBar = v; 1791 } 1792 1793 /** 1794 * Given an x coordinate in view space, convert it to content space. Also 1795 * may be used for absolute heights (such as for the WebTextView's 1796 * textSize, which is unaffected by the height of the title bar). 1797 */ 1798 /*package*/ int viewToContentX(int x) { 1799 return Math.round(x * mInvActualScale); 1800 } 1801 1802 /** 1803 * Given a y coordinate in view space, convert it to content space. 1804 * Takes into account the height of the title bar if there is one 1805 * embedded into the WebView. 1806 */ 1807 /*package*/ int viewToContentY(int y) { 1808 return viewToContentX(y - getTitleHeight()); 1809 } 1810 1811 /** 1812 * Given a distance in content space, convert it to view space. Note: this 1813 * does not reflect translation, just scaling, so this should not be called 1814 * with coordinates, but should be called for dimensions like width or 1815 * height. 1816 */ 1817 /*package*/ int contentToViewDimension(int d) { 1818 return Math.round(d * mActualScale); 1819 } 1820 1821 /** 1822 * Given an x coordinate in content space, convert it to view 1823 * space. Also used for absolute heights. 1824 */ 1825 /*package*/ int contentToViewX(int x) { 1826 return contentToViewDimension(x); 1827 } 1828 1829 /** 1830 * Given a y coordinate in content space, convert it to view 1831 * space. Takes into account the height of the title bar. 1832 */ 1833 /*package*/ int contentToViewY(int y) { 1834 return contentToViewDimension(y) + getTitleHeight(); 1835 } 1836 1837 // Called by JNI to invalidate the View, given rectangle coordinates in 1838 // content space 1839 private void viewInvalidate(int l, int t, int r, int b) { 1840 invalidate(contentToViewX(l), contentToViewY(t), contentToViewX(r), 1841 contentToViewY(b)); 1842 } 1843 1844 // Called by JNI to invalidate the View after a delay, given rectangle 1845 // coordinates in content space 1846 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1847 postInvalidateDelayed(delay, contentToViewX(l), contentToViewY(t), 1848 contentToViewX(r), contentToViewY(b)); 1849 } 1850 1851 private Rect contentToView(Rect x) { 1852 return new Rect(contentToViewX(x.left), contentToViewY(x.top) 1853 , contentToViewX(x.right), contentToViewY(x.bottom)); 1854 } 1855 1856 // stop the scroll animation, and don't let a subsequent fling add 1857 // to the existing velocity 1858 private void abortAnimation() { 1859 mScroller.abortAnimation(); 1860 mLastVelocity = 0; 1861 } 1862 1863 /* call from webcoreview.draw(), so we're still executing in the UI thread 1864 */ 1865 private void recordNewContentSize(int w, int h, boolean updateLayout) { 1866 1867 // premature data from webkit, ignore 1868 if ((w | h) == 0) { 1869 return; 1870 } 1871 1872 // don't abort a scroll animation if we didn't change anything 1873 if (mContentWidth != w || mContentHeight != h) { 1874 // record new dimensions 1875 mContentWidth = w; 1876 mContentHeight = h; 1877 // If history Picture is drawn, don't update scroll. They will be 1878 // updated when we get out of that mode. 1879 if (!mDrawHistory) { 1880 // repin our scroll, taking into account the new content size 1881 int oldX = mScrollX; 1882 int oldY = mScrollY; 1883 mScrollX = pinLocX(mScrollX); 1884 mScrollY = pinLocY(mScrollY); 1885 // android.util.Log.d("skia", "recordNewContentSize - 1886 // abortAnimation"); 1887 abortAnimation(); // just in case 1888 if (oldX != mScrollX || oldY != mScrollY) { 1889 sendOurVisibleRect(); 1890 } 1891 } 1892 } 1893 contentSizeChanged(updateLayout); 1894 } 1895 1896 private void setNewZoomScale(float scale, boolean force) { 1897 if (scale < mMinZoomScale) { 1898 scale = mMinZoomScale; 1899 } else if (scale > mMaxZoomScale) { 1900 scale = mMaxZoomScale; 1901 } 1902 if (scale != mActualScale || force) { 1903 if (mDrawHistory) { 1904 // If history Picture is drawn, don't update scroll. They will 1905 // be updated when we get out of that mode. 1906 if (scale != mActualScale && !mPreviewZoomOnly) { 1907 mCallbackProxy.onScaleChanged(mActualScale, scale); 1908 } 1909 mActualScale = scale; 1910 mInvActualScale = 1 / scale; 1911 if (!mPreviewZoomOnly) { 1912 sendViewSizeZoom(); 1913 } 1914 } else { 1915 // update our scroll so we don't appear to jump 1916 // i.e. keep the center of the doc in the center of the view 1917 1918 int oldX = mScrollX; 1919 int oldY = mScrollY; 1920 float ratio = scale * mInvActualScale; // old inverse 1921 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 1922 float sy = ratio * oldY + (ratio - 1) * mZoomCenterY; 1923 1924 // now update our new scale and inverse 1925 if (scale != mActualScale && !mPreviewZoomOnly) { 1926 mCallbackProxy.onScaleChanged(mActualScale, scale); 1927 } 1928 mActualScale = scale; 1929 mInvActualScale = 1 / scale; 1930 1931 // Scale all the child views 1932 mViewManager.scaleAll(); 1933 1934 // as we don't have animation for scaling, don't do animation 1935 // for scrolling, as it causes weird intermediate state 1936 // pinScrollTo(Math.round(sx), Math.round(sy)); 1937 mScrollX = pinLocX(Math.round(sx)); 1938 mScrollY = pinLocY(Math.round(sy)); 1939 1940 if (!mPreviewZoomOnly) { 1941 sendViewSizeZoom(); 1942 sendOurVisibleRect(); 1943 } 1944 } 1945 } 1946 } 1947 1948 // Used to avoid sending many visible rect messages. 1949 private Rect mLastVisibleRectSent; 1950 private Rect mLastGlobalRect; 1951 1952 private Rect sendOurVisibleRect() { 1953 Rect rect = new Rect(); 1954 calcOurContentVisibleRect(rect); 1955 // Rect.equals() checks for null input. 1956 if (!rect.equals(mLastVisibleRectSent)) { 1957 Point pos = new Point(rect.left, rect.top); 1958 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 1959 nativeMoveGeneration(), 0, pos); 1960 mLastVisibleRectSent = rect; 1961 } 1962 Rect globalRect = new Rect(); 1963 if (getGlobalVisibleRect(globalRect) 1964 && !globalRect.equals(mLastGlobalRect)) { 1965 if (DebugFlags.WEB_VIEW) { 1966 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 1967 + globalRect.top + ",r=" + globalRect.right + ",b=" 1968 + globalRect.bottom); 1969 } 1970 // TODO: the global offset is only used by windowRect() 1971 // in ChromeClientAndroid ; other clients such as touch 1972 // and mouse events could return view + screen relative points. 1973 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 1974 mLastGlobalRect = globalRect; 1975 } 1976 return rect; 1977 } 1978 1979 // Sets r to be the visible rectangle of our webview in view coordinates 1980 private void calcOurVisibleRect(Rect r) { 1981 Point p = new Point(); 1982 getGlobalVisibleRect(r, p); 1983 r.offset(-p.x, -p.y); 1984 if (mFindIsUp) { 1985 r.bottom -= FIND_HEIGHT; 1986 } 1987 } 1988 1989 // Sets r to be our visible rectangle in content coordinates 1990 private void calcOurContentVisibleRect(Rect r) { 1991 calcOurVisibleRect(r); 1992 r.left = viewToContentX(r.left); 1993 r.top = viewToContentY(r.top); 1994 r.right = viewToContentX(r.right); 1995 r.bottom = viewToContentY(r.bottom); 1996 } 1997 1998 static class ViewSizeData { 1999 int mWidth; 2000 int mHeight; 2001 int mTextWrapWidth; 2002 float mScale; 2003 boolean mIgnoreHeight; 2004 } 2005 2006 /** 2007 * Compute unzoomed width and height, and if they differ from the last 2008 * values we sent, send them to webkit (to be used has new viewport) 2009 * 2010 * @return true if new values were sent 2011 */ 2012 private boolean sendViewSizeZoom() { 2013 int viewWidth = getViewWidth(); 2014 int newWidth = Math.round(viewWidth * mInvActualScale); 2015 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2016 /* 2017 * Because the native side may have already done a layout before the 2018 * View system was able to measure us, we have to send a height of 0 to 2019 * remove excess whitespace when we grow our width. This will trigger a 2020 * layout and a change in content size. This content size change will 2021 * mean that contentSizeChanged will either call this method directly or 2022 * indirectly from onSizeChanged. 2023 */ 2024 if (newWidth > mLastWidthSent && mWrapContent) { 2025 newHeight = 0; 2026 } 2027 // Avoid sending another message if the dimensions have not changed. 2028 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2029 ViewSizeData data = new ViewSizeData(); 2030 data.mWidth = newWidth; 2031 data.mHeight = newHeight; 2032 // while in zoom overview mode, the text are wrapped to the screen 2033 // width matching mLastScale. So that we don't trigger re-flow while 2034 // toggling between overview mode and normal mode. 2035 data.mTextWrapWidth = mInZoomOverview ? Math.round(viewWidth 2036 / mLastScale) : newWidth; 2037 data.mScale = mActualScale; 2038 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2039 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2040 mLastWidthSent = newWidth; 2041 mLastHeightSent = newHeight; 2042 return true; 2043 } 2044 return false; 2045 } 2046 2047 @Override 2048 protected int computeHorizontalScrollRange() { 2049 if (mDrawHistory) { 2050 return mHistoryWidth; 2051 } else { 2052 // to avoid rounding error caused unnecessary scrollbar, use floor 2053 return (int) Math.floor(mContentWidth * mActualScale); 2054 } 2055 } 2056 2057 // Make sure this stays in sync with the actual height of the FindDialog. 2058 private static final int FIND_HEIGHT = 79; 2059 2060 @Override 2061 protected int computeVerticalScrollRange() { 2062 if (mDrawHistory) { 2063 return mHistoryHeight; 2064 } else { 2065 // to avoid rounding error caused unnecessary scrollbar, use floor 2066 return (int) Math.floor(mContentHeight * mActualScale); 2067 } 2068 } 2069 2070 @Override 2071 protected int computeVerticalScrollOffset() { 2072 return Math.max(mScrollY - getTitleHeight(), 0); 2073 } 2074 2075 @Override 2076 protected int computeVerticalScrollExtent() { 2077 return getViewHeight(); 2078 } 2079 2080 /** @hide */ 2081 @Override 2082 protected void onDrawVerticalScrollBar(Canvas canvas, 2083 Drawable scrollBar, 2084 int l, int t, int r, int b) { 2085 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2086 scrollBar.draw(canvas); 2087 } 2088 2089 /** 2090 * Get the url for the current page. This is not always the same as the url 2091 * passed to WebViewClient.onPageStarted because although the load for 2092 * that url has begun, the current page may not have changed. 2093 * @return The url for the current page. 2094 */ 2095 public String getUrl() { 2096 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2097 return h != null ? h.getUrl() : null; 2098 } 2099 2100 /** 2101 * Get the original url for the current page. This is not always the same 2102 * as the url passed to WebViewClient.onPageStarted because although the 2103 * load for that url has begun, the current page may not have changed. 2104 * Also, there may have been redirects resulting in a different url to that 2105 * originally requested. 2106 * @return The url that was originally requested for the current page. 2107 */ 2108 public String getOriginalUrl() { 2109 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2110 return h != null ? h.getOriginalUrl() : null; 2111 } 2112 2113 /** 2114 * Get the title for the current page. This is the title of the current page 2115 * until WebViewClient.onReceivedTitle is called. 2116 * @return The title for the current page. 2117 */ 2118 public String getTitle() { 2119 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2120 return h != null ? h.getTitle() : null; 2121 } 2122 2123 /** 2124 * Get the favicon for the current page. This is the favicon of the current 2125 * page until WebViewClient.onReceivedIcon is called. 2126 * @return The favicon for the current page. 2127 */ 2128 public Bitmap getFavicon() { 2129 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2130 return h != null ? h.getFavicon() : null; 2131 } 2132 2133 /** 2134 * Get the touch icon url for the apple-touch-icon <link> element. 2135 * @hide 2136 */ 2137 public String getTouchIconUrl() { 2138 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2139 return h != null ? h.getTouchIconUrl() : null; 2140 } 2141 2142 /** 2143 * Get the progress for the current page. 2144 * @return The progress for the current page between 0 and 100. 2145 */ 2146 public int getProgress() { 2147 return mCallbackProxy.getProgress(); 2148 } 2149 2150 /** 2151 * @return the height of the HTML content. 2152 */ 2153 public int getContentHeight() { 2154 return mContentHeight; 2155 } 2156 2157 /** 2158 * Pause all layout, parsing, and javascript timers for all webviews. This 2159 * is a global requests, not restricted to just this webview. This can be 2160 * useful if the application has been paused. 2161 */ 2162 public void pauseTimers() { 2163 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2164 } 2165 2166 /** 2167 * Resume all layout, parsing, and javascript timers for all webviews. 2168 * This will resume dispatching all timers. 2169 */ 2170 public void resumeTimers() { 2171 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2172 } 2173 2174 /** 2175 * Call this to pause any extra processing associated with this view and 2176 * its associated DOM/plugins/javascript/etc. For example, if the view is 2177 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2178 * network traffic. When the view is again "active", call onResume(). 2179 * 2180 * Note that this differs from pauseTimers(), which affects all views/DOMs 2181 * @hide 2182 */ 2183 public void onPause() { 2184 if (!mIsPaused) { 2185 mIsPaused = true; 2186 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2187 } 2188 } 2189 2190 /** 2191 * Call this to balanace a previous call to onPause() 2192 * @hide 2193 */ 2194 public void onResume() { 2195 if (mIsPaused) { 2196 mIsPaused = false; 2197 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2198 } 2199 } 2200 2201 /** 2202 * Returns true if the view is paused, meaning onPause() was called. Calling 2203 * onResume() sets the paused state back to false. 2204 * @hide 2205 */ 2206 public boolean isPaused() { 2207 return mIsPaused; 2208 } 2209 2210 /** 2211 * Call this to inform the view that memory is low so that it can 2212 * free any available memory. 2213 * @hide 2214 */ 2215 public void freeMemory() { 2216 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2217 } 2218 2219 /** 2220 * Clear the resource cache. Note that the cache is per-application, so 2221 * this will clear the cache for all WebViews used. 2222 * 2223 * @param includeDiskFiles If false, only the RAM cache is cleared. 2224 */ 2225 public void clearCache(boolean includeDiskFiles) { 2226 // Note: this really needs to be a static method as it clears cache for all 2227 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2228 // we can't make this static. 2229 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2230 includeDiskFiles ? 1 : 0, 0); 2231 } 2232 2233 /** 2234 * Make sure that clearing the form data removes the adapter from the 2235 * currently focused textfield if there is one. 2236 */ 2237 public void clearFormData() { 2238 if (inEditingMode()) { 2239 AutoCompleteAdapter adapter = null; 2240 mWebTextView.setAdapterCustom(adapter); 2241 } 2242 } 2243 2244 /** 2245 * Tell the WebView to clear its internal back/forward list. 2246 */ 2247 public void clearHistory() { 2248 mCallbackProxy.getBackForwardList().setClearPending(); 2249 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2250 } 2251 2252 /** 2253 * Clear the SSL preferences table stored in response to proceeding with SSL 2254 * certificate errors. 2255 */ 2256 public void clearSslPreferences() { 2257 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2258 } 2259 2260 /** 2261 * Return the WebBackForwardList for this WebView. This contains the 2262 * back/forward list for use in querying each item in the history stack. 2263 * This is a copy of the private WebBackForwardList so it contains only a 2264 * snapshot of the current state. Multiple calls to this method may return 2265 * different objects. The object returned from this method will not be 2266 * updated to reflect any new state. 2267 */ 2268 public WebBackForwardList copyBackForwardList() { 2269 return mCallbackProxy.getBackForwardList().clone(); 2270 } 2271 2272 /* 2273 * Highlight and scroll to the next occurance of String in findAll. 2274 * Wraps the page infinitely, and scrolls. Must be called after 2275 * calling findAll. 2276 * 2277 * @param forward Direction to search. 2278 */ 2279 public void findNext(boolean forward) { 2280 nativeFindNext(forward); 2281 } 2282 2283 /* 2284 * Find all instances of find on the page and highlight them. 2285 * @param find String to find. 2286 * @return int The number of occurances of the String "find" 2287 * that were found. 2288 */ 2289 public int findAll(String find) { 2290 mFindIsUp = true; 2291 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2292 invalidate(); 2293 return result; 2294 } 2295 2296 // Used to know whether the find dialog is open. Affects whether 2297 // or not we draw the highlights for matches. 2298 private boolean mFindIsUp; 2299 2300 /** 2301 * Return the first substring consisting of the address of a physical 2302 * location. Currently, only addresses in the United States are detected, 2303 * and consist of: 2304 * - a house number 2305 * - a street name 2306 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2307 * - a city name 2308 * - a state or territory, either spelled out or two-letter abbr. 2309 * - an optional 5 digit or 9 digit zip code. 2310 * 2311 * All names must be correctly capitalized, and the zip code, if present, 2312 * must be valid for the state. The street type must be a standard USPS 2313 * spelling or abbreviation. The state or territory must also be spelled 2314 * or abbreviated using USPS standards. The house number may not exceed 2315 * five digits. 2316 * @param addr The string to search for addresses. 2317 * 2318 * @return the address, or if no address is found, return null. 2319 */ 2320 public static String findAddress(String addr) { 2321 return findAddress(addr, false); 2322 } 2323 2324 /** 2325 * @hide 2326 * Return the first substring consisting of the address of a physical 2327 * location. Currently, only addresses in the United States are detected, 2328 * and consist of: 2329 * - a house number 2330 * - a street name 2331 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2332 * - a city name 2333 * - a state or territory, either spelled out or two-letter abbr. 2334 * - an optional 5 digit or 9 digit zip code. 2335 * 2336 * Names are optionally capitalized, and the zip code, if present, 2337 * must be valid for the state. The street type must be a standard USPS 2338 * spelling or abbreviation. The state or territory must also be spelled 2339 * or abbreviated using USPS standards. The house number may not exceed 2340 * five digits. 2341 * @param addr The string to search for addresses. 2342 * @param caseInsensitive addr Set to true to make search ignore case. 2343 * 2344 * @return the address, or if no address is found, return null. 2345 */ 2346 public static String findAddress(String addr, boolean caseInsensitive) { 2347 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2348 } 2349 2350 /* 2351 * Clear the highlighting surrounding text matches created by findAll. 2352 */ 2353 public void clearMatches() { 2354 mFindIsUp = false; 2355 nativeSetFindIsDown(); 2356 // Now that the dialog has been removed, ensure that we scroll to a 2357 // location that is not beyond the end of the page. 2358 pinScrollTo(mScrollX, mScrollY, false, 0); 2359 invalidate(); 2360 } 2361 2362 /** 2363 * Query the document to see if it contains any image references. The 2364 * message object will be dispatched with arg1 being set to 1 if images 2365 * were found and 0 if the document does not reference any images. 2366 * @param response The message that will be dispatched with the result. 2367 */ 2368 public void documentHasImages(Message response) { 2369 if (response == null) { 2370 return; 2371 } 2372 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2373 } 2374 2375 @Override 2376 public void computeScroll() { 2377 if (mScroller.computeScrollOffset()) { 2378 int oldX = mScrollX; 2379 int oldY = mScrollY; 2380 mScrollX = mScroller.getCurrX(); 2381 mScrollY = mScroller.getCurrY(); 2382 postInvalidate(); // So we draw again 2383 if (oldX != mScrollX || oldY != mScrollY) { 2384 // as onScrollChanged() is not called, sendOurVisibleRect() 2385 // needs to be call explicitly 2386 sendOurVisibleRect(); 2387 } 2388 } else { 2389 super.computeScroll(); 2390 } 2391 } 2392 2393 private static int computeDuration(int dx, int dy) { 2394 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2395 int duration = distance * 1000 / STD_SPEED; 2396 return Math.min(duration, MAX_DURATION); 2397 } 2398 2399 // helper to pin the scrollBy parameters (already in view coordinates) 2400 // returns true if the scroll was changed 2401 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2402 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2403 } 2404 2405 // helper to pin the scrollTo parameters (already in view coordinates) 2406 // returns true if the scroll was changed 2407 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2408 x = pinLocX(x); 2409 y = pinLocY(y); 2410 int dx = x - mScrollX; 2411 int dy = y - mScrollY; 2412 2413 if ((dx | dy) == 0) { 2414 return false; 2415 } 2416 2417 if (true && animate) { 2418 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2419 2420 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2421 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2422 invalidate(); 2423 } else { 2424 abortAnimation(); // just in case 2425 scrollTo(x, y); 2426 } 2427 return true; 2428 } 2429 2430 // Scale from content to view coordinates, and pin. 2431 // Also called by jni webview.cpp 2432 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2433 if (mDrawHistory) { 2434 // disallow WebView to change the scroll position as History Picture 2435 // is used in the view system. 2436 // TODO: as we switchOutDrawHistory when trackball or navigation 2437 // keys are hit, this should be safe. Right? 2438 return false; 2439 } 2440 cx = contentToViewDimension(cx); 2441 cy = contentToViewDimension(cy); 2442 if (mHeightCanMeasure) { 2443 // move our visible rect according to scroll request 2444 if (cy != 0) { 2445 Rect tempRect = new Rect(); 2446 calcOurVisibleRect(tempRect); 2447 tempRect.offset(cx, cy); 2448 requestRectangleOnScreen(tempRect); 2449 } 2450 // FIXME: We scroll horizontally no matter what because currently 2451 // ScrollView and ListView will not scroll horizontally. 2452 // FIXME: Why do we only scroll horizontally if there is no 2453 // vertical scroll? 2454// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2455 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2456 } else { 2457 return pinScrollBy(cx, cy, animate, 0); 2458 } 2459 } 2460 2461 // scale from content to view coordinates, and pin 2462 // return true if pin caused the final x/y different than the request cx/cy; 2463 // return false if the view scroll to the exact position as it is requested. 2464 private boolean setContentScrollTo(int cx, int cy) { 2465 if (mDrawHistory) { 2466 // disallow WebView to change the scroll position as History Picture 2467 // is used in the view system. 2468 // One known case where this is called is that WebCore tries to 2469 // restore the scroll position. As history Picture already uses the 2470 // saved scroll position, it is ok to skip this. 2471 return false; 2472 } 2473 int vx = contentToViewX(cx); 2474 int vy = contentToViewY(cy); 2475// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2476// vx + " " + vy + "]"); 2477 pinScrollTo(vx, vy, false, 0); 2478 if (mScrollX != vx || mScrollY != vy) { 2479 return true; 2480 } else { 2481 return false; 2482 } 2483 } 2484 2485 // scale from content to view coordinates, and pin 2486 private void spawnContentScrollTo(int cx, int cy) { 2487 if (mDrawHistory) { 2488 // disallow WebView to change the scroll position as History Picture 2489 // is used in the view system. 2490 return; 2491 } 2492 int vx = contentToViewX(cx); 2493 int vy = contentToViewY(cy); 2494 pinScrollTo(vx, vy, true, 0); 2495 } 2496 2497 /** 2498 * These are from webkit, and are in content coordinate system (unzoomed) 2499 */ 2500 private void contentSizeChanged(boolean updateLayout) { 2501 // suppress 0,0 since we usually see real dimensions soon after 2502 // this avoids drawing the prev content in a funny place. If we find a 2503 // way to consolidate these notifications, this check may become 2504 // obsolete 2505 if ((mContentWidth | mContentHeight) == 0) { 2506 return; 2507 } 2508 2509 if (mHeightCanMeasure) { 2510 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2511 && updateLayout) { 2512 requestLayout(); 2513 } 2514 } else if (mWidthCanMeasure) { 2515 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2516 && updateLayout) { 2517 requestLayout(); 2518 } 2519 } else { 2520 // If we don't request a layout, try to send our view size to the 2521 // native side to ensure that WebCore has the correct dimensions. 2522 sendViewSizeZoom(); 2523 } 2524 } 2525 2526 /** 2527 * Set the WebViewClient that will receive various notifications and 2528 * requests. This will replace the current handler. 2529 * @param client An implementation of WebViewClient. 2530 */ 2531 public void setWebViewClient(WebViewClient client) { 2532 mCallbackProxy.setWebViewClient(client); 2533 } 2534 2535 /** 2536 * Register the interface to be used when content can not be handled by 2537 * the rendering engine, and should be downloaded instead. This will replace 2538 * the current handler. 2539 * @param listener An implementation of DownloadListener. 2540 */ 2541 public void setDownloadListener(DownloadListener listener) { 2542 mCallbackProxy.setDownloadListener(listener); 2543 } 2544 2545 /** 2546 * Set the chrome handler. This is an implementation of WebChromeClient for 2547 * use in handling Javascript dialogs, favicons, titles, and the progress. 2548 * This will replace the current handler. 2549 * @param client An implementation of WebChromeClient. 2550 */ 2551 public void setWebChromeClient(WebChromeClient client) { 2552 mCallbackProxy.setWebChromeClient(client); 2553 } 2554 2555 /** 2556 * Gets the chrome handler. 2557 * @return the current WebChromeClient instance. 2558 * 2559 * @hide API council approval. 2560 */ 2561 public WebChromeClient getWebChromeClient() { 2562 return mCallbackProxy.getWebChromeClient(); 2563 } 2564 2565 /** 2566 * Set the Picture listener. This is an interface used to receive 2567 * notifications of a new Picture. 2568 * @param listener An implementation of WebView.PictureListener. 2569 */ 2570 public void setPictureListener(PictureListener listener) { 2571 mPictureListener = listener; 2572 } 2573 2574 /** 2575 * {@hide} 2576 */ 2577 /* FIXME: Debug only! Remove for SDK! */ 2578 public void externalRepresentation(Message callback) { 2579 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2580 } 2581 2582 /** 2583 * {@hide} 2584 */ 2585 /* FIXME: Debug only! Remove for SDK! */ 2586 public void documentAsText(Message callback) { 2587 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2588 } 2589 2590 /** 2591 * Use this function to bind an object to Javascript so that the 2592 * methods can be accessed from Javascript. 2593 * <p><strong>IMPORTANT:</strong> 2594 * <ul> 2595 * <li> Using addJavascriptInterface() allows JavaScript to control your 2596 * application. This can be a very useful feature or a dangerous security 2597 * issue. When the HTML in the WebView is untrustworthy (for example, part 2598 * or all of the HTML is provided by some person or process), then an 2599 * attacker could inject HTML that will execute your code and possibly any 2600 * code of the attacker's choosing.<br> 2601 * Do not use addJavascriptInterface() unless all of the HTML in this 2602 * WebView was written by you.</li> 2603 * <li> The Java object that is bound runs in another thread and not in 2604 * the thread that it was constructed in.</li> 2605 * </ul></p> 2606 * @param obj The class instance to bind to Javascript 2607 * @param interfaceName The name to used to expose the class in Javascript 2608 */ 2609 public void addJavascriptInterface(Object obj, String interfaceName) { 2610 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2611 arg.mObject = obj; 2612 arg.mInterfaceName = interfaceName; 2613 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2614 } 2615 2616 /** 2617 * Return the WebSettings object used to control the settings for this 2618 * WebView. 2619 * @return A WebSettings object that can be used to control this WebView's 2620 * settings. 2621 */ 2622 public WebSettings getSettings() { 2623 return mWebViewCore.getSettings(); 2624 } 2625 2626 /** 2627 * Return the list of currently loaded plugins. 2628 * @return The list of currently loaded plugins. 2629 * 2630 * @deprecated This was used for Gears, which has been deprecated. 2631 */ 2632 @Deprecated 2633 public static synchronized PluginList getPluginList() { 2634 return null; 2635 } 2636 2637 /** 2638 * @deprecated This was used for Gears, which has been deprecated. 2639 */ 2640 @Deprecated 2641 public void refreshPlugins(boolean reloadOpenPages) { } 2642 2643 //------------------------------------------------------------------------- 2644 // Override View methods 2645 //------------------------------------------------------------------------- 2646 2647 @Override 2648 protected void finalize() throws Throwable { 2649 try { 2650 destroy(); 2651 } finally { 2652 super.finalize(); 2653 } 2654 } 2655 2656 @Override 2657 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 2658 if (child == mTitleBar) { 2659 // When drawing the title bar, move it horizontally to always show 2660 // at the top of the WebView. 2661 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 2662 } 2663 return super.drawChild(canvas, child, drawingTime); 2664 } 2665 2666 @Override 2667 protected void onDraw(Canvas canvas) { 2668 int saveCount = canvas.getSaveCount(); 2669 if (mTitleBar != null) { 2670 canvas.save(); 2671 canvas.translate(0, (int) mTitleBar.getHeight()); 2672 } 2673 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2674 if (mNativeClass == 0) { 2675 return; 2676 } 2677 if (mWebViewCore.mEndScaleZoom) { 2678 mWebViewCore.mEndScaleZoom = false; 2679 if (mTouchMode >= FIRST_SCROLL_ZOOM 2680 && mTouchMode <= LAST_SCROLL_ZOOM) { 2681 setHorizontalScrollBarEnabled(true); 2682 setVerticalScrollBarEnabled(true); 2683 mTouchMode = TOUCH_DONE_MODE; 2684 } 2685 } 2686 canvas.save(); 2687 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 2688 scrollZoomDraw(canvas); 2689 } else { 2690 // Update the buttons in the picture, so when we draw the picture 2691 // to the screen, they are in the correct state. 2692 // Tell the native side if user is a) touching the screen, 2693 // b) pressing the trackball down, or c) pressing the enter key 2694 // If the cursor is on a button, we need to draw it in the pressed 2695 // state. 2696 // If mNativeClass is 0, we should not reach here, so we do not 2697 // need to check it again. 2698 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2699 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2700 || mTrackballDown || mGotCenterDown, false); 2701 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2702 } 2703 canvas.restoreToCount(saveCount); 2704 2705 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2706 invalidate(); 2707 } 2708 } 2709 2710 @Override 2711 public void setLayoutParams(ViewGroup.LayoutParams params) { 2712 if (params.height == LayoutParams.WRAP_CONTENT) { 2713 mWrapContent = true; 2714 } 2715 super.setLayoutParams(params); 2716 } 2717 2718 @Override 2719 public boolean performLongClick() { 2720 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 2721 // Send the click so that the textfield is in focus 2722 // FIXME: When we start respecting changes to the native textfield's 2723 // selection, need to make sure that this does not change it. 2724 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 2725 nativeCursorNodePointer()); 2726 rebuildWebTextView(); 2727 } 2728 if (inEditingMode()) { 2729 return mWebTextView.performLongClick(); 2730 } else { 2731 return super.performLongClick(); 2732 } 2733 } 2734 2735 /** 2736 * Need to adjust the WebTextView after a change in zoom, since mActualScale 2737 * has changed. This is especially important for password fields, which are 2738 * drawn by the WebTextView, since it conveys more information than what 2739 * webkit draws. Thus we need to reposition it to show in the correct 2740 * place. 2741 */ 2742 private boolean mNeedToAdjustWebTextView; 2743 2744 private void drawCoreAndCursorRing(Canvas canvas, int color, 2745 boolean drawCursorRing) { 2746 if (mDrawHistory) { 2747 canvas.scale(mActualScale, mActualScale); 2748 canvas.drawPicture(mHistoryPicture); 2749 return; 2750 } 2751 2752 boolean animateZoom = mZoomScale != 0; 2753 boolean animateScroll = !mScroller.isFinished() 2754 || mVelocityTracker != null; 2755 if (animateZoom) { 2756 float zoomScale; 2757 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 2758 if (interval < ZOOM_ANIMATION_LENGTH) { 2759 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 2760 zoomScale = 1.0f / (mInvInitialZoomScale 2761 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 2762 invalidate(); 2763 } else { 2764 zoomScale = mZoomScale; 2765 // set mZoomScale to be 0 as we have done animation 2766 mZoomScale = 0; 2767 if (mNeedToAdjustWebTextView) { 2768 mNeedToAdjustWebTextView = false; 2769 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 2770 contentToViewDimension( 2771 nativeFocusCandidateTextSize())); 2772 Rect bounds = nativeFocusCandidateNodeBounds(); 2773 Rect vBox = contentToView(bounds); 2774 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 2775 vBox.height()); 2776 // If it is a password field, start drawing the 2777 // WebTextView once again. 2778 if (nativeFocusCandidateIsPassword()) { 2779 mWebTextView.setInPassword(true); 2780 } 2781 } 2782 } 2783 float scale = zoomScale * mInvInitialZoomScale; 2784 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 2785 - mZoomCenterX); 2786 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 2787 * zoomScale)) + mScrollX; 2788 int ty = Math.round(scale * (mInitialScrollY + mZoomCenterY) 2789 - mZoomCenterY); 2790 ty = -pinLoc(ty, getViewHeight(), Math.round(mContentHeight 2791 * zoomScale)) + mScrollY; 2792 canvas.translate(tx, ty); 2793 canvas.scale(zoomScale, zoomScale); 2794 if (inEditingMode() && !mNeedToAdjustWebTextView 2795 && mZoomScale != 0) { 2796 // The WebTextView is up. Keep track of this so we can adjust 2797 // its size and placement when we finish zooming 2798 mNeedToAdjustWebTextView = true; 2799 // If it is in password mode, turn it off so it does not draw 2800 // misplaced. 2801 if (nativeFocusCandidateIsPassword()) { 2802 mWebTextView.setInPassword(false); 2803 } 2804 } 2805 } else { 2806 canvas.scale(mActualScale, mActualScale); 2807 } 2808 2809 mWebViewCore.drawContentPicture(canvas, color, animateZoom, 2810 animateScroll); 2811 2812 if (mNativeClass == 0) return; 2813 if (mShiftIsPressed) { 2814 if (mTouchSelection) { 2815 nativeDrawSelectionRegion(canvas); 2816 } else { 2817 nativeDrawSelection(canvas, mSelectX, mSelectY, 2818 mExtendSelection); 2819 } 2820 } else if (drawCursorRing) { 2821 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 2822 mTouchMode = TOUCH_SHORTPRESS_MODE; 2823 HitTestResult hitTest = getHitTestResult(); 2824 if (hitTest != null && 2825 hitTest.mType != HitTestResult.UNKNOWN_TYPE) { 2826 mPrivateHandler.sendMessageDelayed(mPrivateHandler 2827 .obtainMessage(SWITCH_TO_LONGPRESS), 2828 LONG_PRESS_TIMEOUT); 2829 } 2830 } 2831 nativeDrawCursorRing(canvas); 2832 } 2833 // When the FindDialog is up, only draw the matches if we are not in 2834 // the process of scrolling them into view. 2835 if (mFindIsUp && !animateScroll) { 2836 nativeDrawMatches(canvas); 2837 } 2838 } 2839 2840 private float scrollZoomGridScale(float invScale) { 2841 float griddedInvScale = (int) (invScale * SCROLL_ZOOM_GRID) 2842 / (float) SCROLL_ZOOM_GRID; 2843 return 1.0f / griddedInvScale; 2844 } 2845 2846 private float scrollZoomX(float scale) { 2847 int width = getViewWidth(); 2848 float maxScrollZoomX = mContentWidth * scale - width; 2849 int maxX = mContentWidth - width; 2850 return -(maxScrollZoomX > 0 ? mZoomScrollX * maxScrollZoomX / maxX 2851 : maxScrollZoomX / 2); 2852 } 2853 2854 private float scrollZoomY(float scale) { 2855 int height = getViewHeight(); 2856 float maxScrollZoomY = mContentHeight * scale - height; 2857 int maxY = mContentHeight - height; 2858 return -(maxScrollZoomY > 0 ? mZoomScrollY * maxScrollZoomY / maxY 2859 : maxScrollZoomY / 2); 2860 } 2861 2862 private void drawMagnifyFrame(Canvas canvas, Rect frame, Paint paint) { 2863 final float ADORNMENT_LEN = 16.0f; 2864 float width = frame.width(); 2865 float height = frame.height(); 2866 Path path = new Path(); 2867 path.moveTo(-ADORNMENT_LEN, -ADORNMENT_LEN); 2868 path.lineTo(0, 0); 2869 path.lineTo(width, 0); 2870 path.lineTo(width + ADORNMENT_LEN, -ADORNMENT_LEN); 2871 path.moveTo(-ADORNMENT_LEN, height + ADORNMENT_LEN); 2872 path.lineTo(0, height); 2873 path.lineTo(width, height); 2874 path.lineTo(width + ADORNMENT_LEN, height + ADORNMENT_LEN); 2875 path.moveTo(0, 0); 2876 path.lineTo(0, height); 2877 path.moveTo(width, 0); 2878 path.lineTo(width, height); 2879 path.offset(frame.left, frame.top); 2880 canvas.drawPath(path, paint); 2881 } 2882 2883 // Returns frame surrounding magified portion of screen while 2884 // scroll-zoom is enabled. The frame is also used to center the 2885 // zoom-in zoom-out points at the start and end of the animation. 2886 private Rect scrollZoomFrame(int width, int height, float halfScale) { 2887 Rect scrollFrame = new Rect(); 2888 scrollFrame.set(mZoomScrollX, mZoomScrollY, 2889 mZoomScrollX + width, mZoomScrollY + height); 2890 if (mContentWidth * mZoomScrollLimit < width) { 2891 float scale = zoomFrameScaleX(width, halfScale, 1.0f); 2892 float offsetX = (width * scale - width) * 0.5f; 2893 scrollFrame.left -= offsetX; 2894 scrollFrame.right += offsetX; 2895 } 2896 if (mContentHeight * mZoomScrollLimit < height) { 2897 float scale = zoomFrameScaleY(height, halfScale, 1.0f); 2898 float offsetY = (height * scale - height) * 0.5f; 2899 scrollFrame.top -= offsetY; 2900 scrollFrame.bottom += offsetY; 2901 } 2902 return scrollFrame; 2903 } 2904 2905 private float zoomFrameScaleX(int width, float halfScale, float noScale) { 2906 // mContentWidth > width > mContentWidth * mZoomScrollLimit 2907 if (mContentWidth <= width) { 2908 return halfScale; 2909 } 2910 float part = (width - mContentWidth * mZoomScrollLimit) 2911 / (width * (1 - mZoomScrollLimit)); 2912 return halfScale * part + noScale * (1.0f - part); 2913 } 2914 2915 private float zoomFrameScaleY(int height, float halfScale, float noScale) { 2916 if (mContentHeight <= height) { 2917 return halfScale; 2918 } 2919 float part = (height - mContentHeight * mZoomScrollLimit) 2920 / (height * (1 - mZoomScrollLimit)); 2921 return halfScale * part + noScale * (1.0f - part); 2922 } 2923 2924 private float scrollZoomMagScale(float invScale) { 2925 return (invScale * 2 + mInvActualScale) / 3; 2926 } 2927 2928 private void scrollZoomDraw(Canvas canvas) { 2929 float invScale = mZoomScrollInvLimit; 2930 int elapsed = 0; 2931 if (mTouchMode != SCROLL_ZOOM_OUT) { 2932 elapsed = (int) Math.min(System.currentTimeMillis() 2933 - mZoomScrollStart, SCROLL_ZOOM_DURATION); 2934 float transitionScale = (mZoomScrollInvLimit - mInvActualScale) 2935 * elapsed / SCROLL_ZOOM_DURATION; 2936 if (mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 2937 invScale = mInvActualScale + transitionScale; 2938 } else { /* if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) */ 2939 invScale = mZoomScrollInvLimit - transitionScale; 2940 } 2941 } 2942 float scale = scrollZoomGridScale(invScale); 2943 invScale = 1.0f / scale; 2944 int width = getViewWidth(); 2945 int height = getViewHeight(); 2946 float halfScale = scrollZoomMagScale(invScale); 2947 Rect scrollFrame = scrollZoomFrame(width, height, halfScale); 2948 if (elapsed == SCROLL_ZOOM_DURATION) { 2949 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 2950 setHorizontalScrollBarEnabled(true); 2951 setVerticalScrollBarEnabled(true); 2952 rebuildWebTextView(); 2953 scrollTo((int) (scrollFrame.centerX() * mActualScale) 2954 - (width >> 1), (int) (scrollFrame.centerY() 2955 * mActualScale) - (height >> 1)); 2956 mTouchMode = TOUCH_DONE_MODE; 2957 // Show all the child views once we are done. 2958 mViewManager.showAll(); 2959 } else { 2960 mTouchMode = SCROLL_ZOOM_OUT; 2961 } 2962 } 2963 float newX = scrollZoomX(scale); 2964 float newY = scrollZoomY(scale); 2965 if (DebugFlags.WEB_VIEW) { 2966 Log.v(LOGTAG, "scrollZoomDraw scale=" + scale + " + (" + newX 2967 + ", " + newY + ") mZoomScroll=(" + mZoomScrollX + ", " 2968 + mZoomScrollY + ")" + " invScale=" + invScale + " scale=" 2969 + scale); 2970 } 2971 canvas.translate(newX, newY); 2972 canvas.scale(scale, scale); 2973 boolean animating = mTouchMode != SCROLL_ZOOM_OUT; 2974 if (mDrawHistory) { 2975 int sc = canvas.save(Canvas.CLIP_SAVE_FLAG); 2976 Rect clip = new Rect(0, 0, mHistoryPicture.getWidth(), 2977 mHistoryPicture.getHeight()); 2978 canvas.clipRect(clip, Region.Op.DIFFERENCE); 2979 canvas.drawColor(mBackgroundColor); 2980 canvas.restoreToCount(sc); 2981 canvas.drawPicture(mHistoryPicture); 2982 } else { 2983 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2984 animating, true); 2985 } 2986 if (mTouchMode == TOUCH_DONE_MODE) { 2987 return; 2988 } 2989 Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); 2990 paint.setStyle(Paint.Style.STROKE); 2991 paint.setStrokeWidth(30.0f); 2992 paint.setARGB(0x50, 0, 0, 0); 2993 int maxX = mContentWidth - width; 2994 int maxY = mContentHeight - height; 2995 if (true) { // experiment: draw hint to place finger off magnify area 2996 drawMagnifyFrame(canvas, scrollFrame, paint); 2997 } else { 2998 canvas.drawRect(scrollFrame, paint); 2999 } 3000 int sc = canvas.save(); 3001 canvas.clipRect(scrollFrame); 3002 float halfX = (float) mZoomScrollX / maxX; 3003 if (mContentWidth * mZoomScrollLimit < width) { 3004 halfX = zoomFrameScaleX(width, 0.5f, halfX); 3005 } 3006 float halfY = (float) mZoomScrollY / maxY; 3007 if (mContentHeight * mZoomScrollLimit < height) { 3008 halfY = zoomFrameScaleY(height, 0.5f, halfY); 3009 } 3010 canvas.scale(halfScale, halfScale, mZoomScrollX + width * halfX 3011 , mZoomScrollY + height * halfY); 3012 if (DebugFlags.WEB_VIEW) { 3013 Log.v(LOGTAG, "scrollZoomDraw halfScale=" + halfScale + " w/h=(" 3014 + width + ", " + height + ") half=(" + halfX + ", " 3015 + halfY + ")"); 3016 } 3017 if (mDrawHistory) { 3018 canvas.drawPicture(mHistoryPicture); 3019 } else { 3020 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 3021 animating, false); 3022 } 3023 canvas.restoreToCount(sc); 3024 if (mTouchMode != SCROLL_ZOOM_OUT) { 3025 invalidate(); 3026 } 3027 } 3028 3029 private void zoomScrollTap(float x, float y) { 3030 float scale = scrollZoomGridScale(mZoomScrollInvLimit); 3031 float left = scrollZoomX(scale); 3032 float top = scrollZoomY(scale); 3033 int width = getViewWidth(); 3034 int height = getViewHeight(); 3035 x -= width * scale / 2; 3036 y -= height * scale / 2; 3037 mZoomScrollX = Math.min(mContentWidth - width 3038 , Math.max(0, (int) ((x - left) / scale))); 3039 mZoomScrollY = Math.min(mContentHeight - height 3040 , Math.max(0, (int) ((y - top) / scale))); 3041 if (DebugFlags.WEB_VIEW) { 3042 Log.v(LOGTAG, "zoomScrollTap scale=" + scale + " + (" + left 3043 + ", " + top + ") mZoomScroll=(" + mZoomScrollX + ", " 3044 + mZoomScrollY + ")" + " x=" + x + " y=" + y); 3045 } 3046 } 3047 3048 /** 3049 * @hide 3050 */ 3051 public boolean canZoomScrollOut() { 3052 if (mContentWidth == 0 || mContentHeight == 0) { 3053 return false; 3054 } 3055 int width = getViewWidth(); 3056 int height = getViewHeight(); 3057 float x = (float) width / (float) mContentWidth; 3058 float y = (float) height / (float) mContentHeight; 3059 mZoomScrollLimit = Math.max(DEFAULT_MIN_ZOOM_SCALE, Math.min(x, y)); 3060 mZoomScrollInvLimit = 1.0f / mZoomScrollLimit; 3061 if (DebugFlags.WEB_VIEW) { 3062 Log.v(LOGTAG, "canZoomScrollOut" 3063 + " mInvActualScale=" + mInvActualScale 3064 + " mZoomScrollLimit=" + mZoomScrollLimit 3065 + " mZoomScrollInvLimit=" + mZoomScrollInvLimit 3066 + " mContentWidth=" + mContentWidth 3067 + " mContentHeight=" + mContentHeight 3068 ); 3069 } 3070 // don't zoom out unless magnify area is at least half as wide 3071 // or tall as content 3072 float limit = mZoomScrollLimit * 2; 3073 return mContentWidth >= width * limit 3074 || mContentHeight >= height * limit; 3075 } 3076 3077 private void startZoomScrollOut() { 3078 setHorizontalScrollBarEnabled(false); 3079 setVerticalScrollBarEnabled(false); 3080 if (getSettings().getBuiltInZoomControls()) { 3081 if (mZoomButtonsController.isVisible()) { 3082 mZoomButtonsController.setVisible(false); 3083 } 3084 } else { 3085 if (mZoomControlRunnable != null) { 3086 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 3087 } 3088 if (mZoomControls != null) { 3089 mZoomControls.hide(); 3090 } 3091 } 3092 int width = getViewWidth(); 3093 int height = getViewHeight(); 3094 int halfW = width >> 1; 3095 mLastTouchX = halfW; 3096 int halfH = height >> 1; 3097 mLastTouchY = halfH; 3098 abortAnimation(); 3099 mZoomScrollStart = System.currentTimeMillis(); 3100 Rect zoomFrame = scrollZoomFrame(width, height 3101 , scrollZoomMagScale(mZoomScrollInvLimit)); 3102 mZoomScrollX = Math.max(0, (int) ((mScrollX + halfW) * mInvActualScale) 3103 - (zoomFrame.width() >> 1)); 3104 mZoomScrollY = Math.max(0, (int) ((mScrollY + halfH) * mInvActualScale) 3105 - (zoomFrame.height() >> 1)); 3106 scrollTo(0, 0); // triggers inval, starts animation 3107 clearTextEntry(); 3108 if (DebugFlags.WEB_VIEW) { 3109 Log.v(LOGTAG, "startZoomScrollOut mZoomScroll=(" 3110 + mZoomScrollX + ", " + mZoomScrollY +")"); 3111 } 3112 } 3113 3114 /** 3115 * @hide 3116 */ 3117 public void zoomScrollOut() { 3118 if (canZoomScrollOut() == false) { 3119 mTouchMode = TOUCH_DONE_MODE; 3120 return; 3121 } 3122 // Hide the child views while in this mode. 3123 mViewManager.hideAll(); 3124 startZoomScrollOut(); 3125 mTouchMode = SCROLL_ZOOM_ANIMATION_OUT; 3126 invalidate(); 3127 } 3128 3129 private void moveZoomScrollWindow(float x, float y) { 3130 if (Math.abs(x - mLastZoomScrollRawX) < 1.5f 3131 && Math.abs(y - mLastZoomScrollRawY) < 1.5f) { 3132 return; 3133 } 3134 mLastZoomScrollRawX = x; 3135 mLastZoomScrollRawY = y; 3136 int oldX = mZoomScrollX; 3137 int oldY = mZoomScrollY; 3138 int width = getViewWidth(); 3139 int height = getViewHeight(); 3140 int maxZoomX = mContentWidth - width; 3141 if (maxZoomX > 0) { 3142 int maxScreenX = width - (int) Math.ceil(width 3143 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 3144 if (DebugFlags.WEB_VIEW) { 3145 Log.v(LOGTAG, "moveZoomScrollWindow-X" 3146 + " maxScreenX=" + maxScreenX + " width=" + width 3147 + " mZoomScrollLimit=" + mZoomScrollLimit + " x=" + x); 3148 } 3149 x += maxScreenX * mLastScrollX / maxZoomX - mLastTouchX; 3150 x *= Math.max(maxZoomX / maxScreenX, mZoomScrollInvLimit); 3151 mZoomScrollX = Math.max(0, Math.min(maxZoomX, (int) x)); 3152 } 3153 int maxZoomY = mContentHeight - height; 3154 if (maxZoomY > 0) { 3155 int maxScreenY = height - (int) Math.ceil(height 3156 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 3157 if (DebugFlags.WEB_VIEW) { 3158 Log.v(LOGTAG, "moveZoomScrollWindow-Y" 3159 + " maxScreenY=" + maxScreenY + " height=" + height 3160 + " mZoomScrollLimit=" + mZoomScrollLimit + " y=" + y); 3161 } 3162 y += maxScreenY * mLastScrollY / maxZoomY - mLastTouchY; 3163 y *= Math.max(maxZoomY / maxScreenY, mZoomScrollInvLimit); 3164 mZoomScrollY = Math.max(0, Math.min(maxZoomY, (int) y)); 3165 } 3166 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 3167 invalidate(); 3168 } 3169 if (DebugFlags.WEB_VIEW) { 3170 Log.v(LOGTAG, "moveZoomScrollWindow" 3171 + " scrollTo=(" + mZoomScrollX + ", " + mZoomScrollY + ")" 3172 + " mLastTouch=(" + mLastTouchX + ", " + mLastTouchY + ")" 3173 + " maxZoom=(" + maxZoomX + ", " + maxZoomY + ")" 3174 + " last=("+mLastScrollX+", "+mLastScrollY+")" 3175 + " x=" + x + " y=" + y); 3176 } 3177 } 3178 3179 private void setZoomScrollIn() { 3180 mZoomScrollStart = System.currentTimeMillis(); 3181 } 3182 3183 private float mZoomScrollLimit; 3184 private float mZoomScrollInvLimit; 3185 private int mLastScrollX; 3186 private int mLastScrollY; 3187 private long mZoomScrollStart; 3188 private int mZoomScrollX; 3189 private int mZoomScrollY; 3190 private float mLastZoomScrollRawX = -1000.0f; 3191 private float mLastZoomScrollRawY = -1000.0f; 3192 // The zoomed scale varies from 1.0 to DEFAULT_MIN_ZOOM_SCALE == 0.25. 3193 // The zoom animation duration SCROLL_ZOOM_DURATION == 0.5. 3194 // Two pressures compete for gridding; a high frame rate (e.g. 20 fps) 3195 // and minimizing font cache allocations (fewer frames is better). 3196 // A SCROLL_ZOOM_GRID of 6 permits about 20 zoom levels over 0.5 seconds: 3197 // the inverse of: 1.0, 1.16, 1.33, 1.5, 1.67, 1.84, 2.0, etc. to 4.0 3198 private static final int SCROLL_ZOOM_GRID = 6; 3199 private static final int SCROLL_ZOOM_DURATION = 500; 3200 // Make it easier to get to the bottom of a document by reserving a 32 3201 // pixel buffer, for when the starting drag is a bit below the bottom of 3202 // the magnify frame. 3203 private static final int SCROLL_ZOOM_FINGER_BUFFER = 32; 3204 3205 // draw history 3206 private boolean mDrawHistory = false; 3207 private Picture mHistoryPicture = null; 3208 private int mHistoryWidth = 0; 3209 private int mHistoryHeight = 0; 3210 3211 // Only check the flag, can be called from WebCore thread 3212 boolean drawHistory() { 3213 return mDrawHistory; 3214 } 3215 3216 // Should only be called in UI thread 3217 void switchOutDrawHistory() { 3218 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3219 if (mDrawHistory && mWebViewCore.pictureReady()) { 3220 mDrawHistory = false; 3221 invalidate(); 3222 int oldScrollX = mScrollX; 3223 int oldScrollY = mScrollY; 3224 mScrollX = pinLocX(mScrollX); 3225 mScrollY = pinLocY(mScrollY); 3226 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3227 mUserScroll = false; 3228 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3229 oldScrollY); 3230 } 3231 sendOurVisibleRect(); 3232 } 3233 } 3234 3235 WebViewCore.CursorData cursorData() { 3236 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3237 result.mMoveGeneration = nativeMoveGeneration(); 3238 result.mFrame = nativeCursorFramePointer(); 3239 Point position = nativeCursorPosition(); 3240 result.mX = position.x; 3241 result.mY = position.y; 3242 return result; 3243 } 3244 3245 /** 3246 * Delete text from start to end in the focused textfield. If there is no 3247 * focus, or if start == end, silently fail. If start and end are out of 3248 * order, swap them. 3249 * @param start Beginning of selection to delete. 3250 * @param end End of selection to delete. 3251 */ 3252 /* package */ void deleteSelection(int start, int end) { 3253 mTextGeneration++; 3254 WebViewCore.TextSelectionData data 3255 = new WebViewCore.TextSelectionData(start, end); 3256 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3257 data); 3258 } 3259 3260 /** 3261 * Set the selection to (start, end) in the focused textfield. If start and 3262 * end are out of order, swap them. 3263 * @param start Beginning of selection. 3264 * @param end End of selection. 3265 */ 3266 /* package */ void setSelection(int start, int end) { 3267 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3268 } 3269 3270 // Called by JNI when a touch event puts a textfield into focus. 3271 private void displaySoftKeyboard(boolean isTextView) { 3272 InputMethodManager imm = (InputMethodManager) 3273 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3274 3275 if (isTextView) { 3276 imm.showSoftInput(mWebTextView, 0); 3277 // Now we need to fake a touch event to place the cursor where the 3278 // user touched. 3279 AbsoluteLayout.LayoutParams lp = (AbsoluteLayout.LayoutParams) 3280 mWebTextView.getLayoutParams(); 3281 if (lp != null) { 3282 // Take the last touch and adjust for the location of the 3283 // WebTextView. 3284 float x = mLastTouchX + (float) (mScrollX - lp.x); 3285 float y = mLastTouchY + (float) (mScrollY - lp.y); 3286 mWebTextView.fakeTouchEvent(x, y); 3287 } 3288 if (mInZoomOverview) { 3289 // if in zoom overview mode, call doDoubleTap() to bring it back 3290 // to normal mode so that user can enter text. 3291 doDoubleTap(); 3292 } 3293 } 3294 else { // used by plugins 3295 imm.showSoftInput(this, 0); 3296 } 3297 } 3298 3299 // Called by WebKit to instruct the UI to hide the keyboard 3300 private void hideSoftKeyboard() { 3301 InputMethodManager imm = (InputMethodManager) 3302 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3303 3304 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3305 } 3306 3307 /* 3308 * This method checks the current focus and cursor and potentially rebuilds 3309 * mWebTextView to have the appropriate properties, such as password, 3310 * multiline, and what text it contains. It also removes it if necessary. 3311 */ 3312 /* package */ void rebuildWebTextView() { 3313 // If the WebView does not have focus, do nothing until it gains focus. 3314 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus()) 3315 || (mTouchMode >= FIRST_SCROLL_ZOOM 3316 && mTouchMode <= LAST_SCROLL_ZOOM)) { 3317 return; 3318 } 3319 boolean alreadyThere = inEditingMode(); 3320 // inEditingMode can only return true if mWebTextView is non-null, 3321 // so we can safely call remove() if (alreadyThere) 3322 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3323 if (alreadyThere) { 3324 mWebTextView.remove(); 3325 } 3326 return; 3327 } 3328 // At this point, we know we have found an input field, so go ahead 3329 // and create the WebTextView if necessary. 3330 if (mWebTextView == null) { 3331 mWebTextView = new WebTextView(mContext, WebView.this); 3332 // Initialize our generation number. 3333 mTextGeneration = 0; 3334 } 3335 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3336 contentToViewDimension(nativeFocusCandidateTextSize())); 3337 Rect visibleRect = new Rect(); 3338 calcOurContentVisibleRect(visibleRect); 3339 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3340 // should be in content coordinates. 3341 Rect bounds = nativeFocusCandidateNodeBounds(); 3342 if (!Rect.intersects(bounds, visibleRect)) { 3343 mWebTextView.bringIntoView(); 3344 } 3345 String text = nativeFocusCandidateText(); 3346 int nodePointer = nativeFocusCandidatePointer(); 3347 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3348 // It is possible that we have the same textfield, but it has moved, 3349 // i.e. In the case of opening/closing the screen. 3350 // In that case, we need to set the dimensions, but not the other 3351 // aspects. 3352 // We also need to restore the selection, which gets wrecked by 3353 // calling setTextEntryRect. 3354 Spannable spannable = (Spannable) mWebTextView.getText(); 3355 int start = Selection.getSelectionStart(spannable); 3356 int end = Selection.getSelectionEnd(spannable); 3357 // If the text has been changed by webkit, update it. However, if 3358 // there has been more UI text input, ignore it. We will receive 3359 // another update when that text is recognized. 3360 if (text != null && !text.equals(spannable.toString()) 3361 && nativeTextGeneration() == mTextGeneration) { 3362 mWebTextView.setTextAndKeepSelection(text); 3363 } else { 3364 Selection.setSelection(spannable, start, end); 3365 } 3366 } else { 3367 Rect vBox = contentToView(bounds); 3368 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3369 vBox.height()); 3370 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3371 Gravity.RIGHT : Gravity.NO_GRAVITY); 3372 // this needs to be called before update adapter thread starts to 3373 // ensure the mWebTextView has the same node pointer 3374 mWebTextView.setNodePointer(nodePointer); 3375 int maxLength = -1; 3376 boolean isTextField = nativeFocusCandidateIsTextField(); 3377 if (isTextField) { 3378 maxLength = nativeFocusCandidateMaxLength(); 3379 String name = nativeFocusCandidateName(); 3380 if (mWebViewCore.getSettings().getSaveFormData() 3381 && name != null) { 3382 Message update = mPrivateHandler.obtainMessage( 3383 REQUEST_FORM_DATA, nodePointer); 3384 RequestFormData updater = new RequestFormData(name, 3385 getUrl(), update); 3386 Thread t = new Thread(updater); 3387 t.start(); 3388 } 3389 } 3390 mWebTextView.setMaxLength(maxLength); 3391 AutoCompleteAdapter adapter = null; 3392 mWebTextView.setAdapterCustom(adapter); 3393 mWebTextView.setSingleLine(isTextField); 3394 mWebTextView.setInPassword(nativeFocusCandidateIsPassword()); 3395 if (null == text) { 3396 mWebTextView.setText("", 0, 0); 3397 if (DebugFlags.WEB_VIEW) { 3398 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3399 } 3400 } else { 3401 // Change to true to enable the old style behavior, where 3402 // entering a textfield/textarea always set the selection to the 3403 // whole field. This was desirable for the case where the user 3404 // intends to scroll past the field using the trackball. 3405 // However, it causes a problem when replying to emails - the 3406 // user expects the cursor to be at the beginning of the 3407 // textarea. Testing out a new behavior, where textfields set 3408 // selection at the end, and textareas at the beginning. 3409 if (false) { 3410 mWebTextView.setText(text, 0, text.length()); 3411 } else if (isTextField) { 3412 int length = text.length(); 3413 mWebTextView.setText(text, length, length); 3414 if (DebugFlags.WEB_VIEW) { 3415 Log.v(LOGTAG, "rebuildWebTextView length=" + length); 3416 } 3417 } else { 3418 mWebTextView.setText(text, 0, 0); 3419 if (DebugFlags.WEB_VIEW) { 3420 Log.v(LOGTAG, "rebuildWebTextView !isTextField"); 3421 } 3422 } 3423 } 3424 mWebTextView.requestFocus(); 3425 } 3426 } 3427 3428 /* 3429 * This class requests an Adapter for the WebTextView which shows past 3430 * entries stored in the database. It is a Runnable so that it can be done 3431 * in its own thread, without slowing down the UI. 3432 */ 3433 private class RequestFormData implements Runnable { 3434 private String mName; 3435 private String mUrl; 3436 private Message mUpdateMessage; 3437 3438 public RequestFormData(String name, String url, Message msg) { 3439 mName = name; 3440 mUrl = url; 3441 mUpdateMessage = msg; 3442 } 3443 3444 public void run() { 3445 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3446 if (pastEntries.size() > 0) { 3447 AutoCompleteAdapter adapter = new 3448 AutoCompleteAdapter(mContext, pastEntries); 3449 mUpdateMessage.obj = adapter; 3450 mUpdateMessage.sendToTarget(); 3451 } 3452 } 3453 } 3454 3455 // This is used to determine long press with the center key. Does not 3456 // affect long press with the trackball/touch. 3457 private boolean mGotCenterDown = false; 3458 3459 @Override 3460 public boolean onKeyDown(int keyCode, KeyEvent event) { 3461 if (DebugFlags.WEB_VIEW) { 3462 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3463 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3464 } 3465 3466 if (mNativeClass == 0) { 3467 return false; 3468 } 3469 3470 // do this hack up front, so it always works, regardless of touch-mode 3471 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3472 mAutoRedraw = !mAutoRedraw; 3473 if (mAutoRedraw) { 3474 invalidate(); 3475 } 3476 return true; 3477 } 3478 3479 // Bubble up the key event if 3480 // 1. it is a system key; or 3481 // 2. the host application wants to handle it; or 3482 // 3. webview is in scroll-zoom state; 3483 if (event.isSystem() 3484 || mCallbackProxy.uiOverrideKeyEvent(event) 3485 || (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM)) { 3486 return false; 3487 } 3488 3489 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3490 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3491 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3492 mExtendSelection = false; 3493 mShiftIsPressed = true; 3494 if (nativeHasCursorNode()) { 3495 Rect rect = nativeCursorNodeBounds(); 3496 mSelectX = contentToViewX(rect.left); 3497 mSelectY = contentToViewY(rect.top); 3498 } else { 3499 mSelectX = mScrollX + (int) mLastTouchX; 3500 mSelectY = mScrollY + (int) mLastTouchY; 3501 } 3502 nativeHideCursor(); 3503 } 3504 3505 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3506 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3507 // always handle the navigation keys in the UI thread 3508 switchOutDrawHistory(); 3509 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3510 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3511 return true; 3512 } 3513 // Bubble up the key event as WebView doesn't handle it 3514 return false; 3515 } 3516 3517 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3518 switchOutDrawHistory(); 3519 if (event.getRepeatCount() == 0) { 3520 mGotCenterDown = true; 3521 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3522 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3523 // Already checked mNativeClass, so we do not need to check it 3524 // again. 3525 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3526 return true; 3527 } 3528 // Bubble up the key event as WebView doesn't handle it 3529 return false; 3530 } 3531 3532 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3533 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3534 // turn off copy select if a shift-key combo is pressed 3535 mExtendSelection = mShiftIsPressed = false; 3536 if (mTouchMode == TOUCH_SELECT_MODE) { 3537 mTouchMode = TOUCH_INIT_MODE; 3538 } 3539 } 3540 3541 if (getSettings().getNavDump()) { 3542 switch (keyCode) { 3543 case KeyEvent.KEYCODE_4: 3544 // "/data/data/com.android.browser/displayTree.txt" 3545 nativeDumpDisplayTree(getUrl()); 3546 break; 3547 case KeyEvent.KEYCODE_5: 3548 case KeyEvent.KEYCODE_6: 3549 // 5: dump the dom tree to the file 3550 // "/data/data/com.android.browser/domTree.txt" 3551 // 6: dump the dom tree to the adb log 3552 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, 3553 (keyCode == KeyEvent.KEYCODE_5) ? 1 : 0, 0); 3554 break; 3555 case KeyEvent.KEYCODE_7: 3556 case KeyEvent.KEYCODE_8: 3557 // 7: dump the render tree to the file 3558 // "/data/data/com.android.browser/renderTree.txt" 3559 // 8: dump the render tree to the adb log 3560 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, 3561 (keyCode == KeyEvent.KEYCODE_7) ? 1 : 0, 0); 3562 break; 3563 case KeyEvent.KEYCODE_9: 3564 nativeInstrumentReport(); 3565 return true; 3566 } 3567 } 3568 3569 if (nativeCursorIsPlugin()) { 3570 nativeUpdatePluginReceivesEvents(); 3571 invalidate(); 3572 } else if (nativeCursorIsTextInput()) { 3573 // This message will put the node in focus, for the DOM's notion 3574 // of focus, and make the focuscontroller active 3575 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3576 nativeCursorNodePointer()); 3577 // This will bring up the WebTextView and put it in focus, for 3578 // our view system's notion of focus 3579 rebuildWebTextView(); 3580 // Now we need to pass the event to it 3581 return mWebTextView.onKeyDown(keyCode, event); 3582 } else if (nativeHasFocusNode()) { 3583 // In this case, the cursor is not on a text input, but the focus 3584 // might be. Check it, and if so, hand over to the WebTextView. 3585 rebuildWebTextView(); 3586 if (inEditingMode()) { 3587 return mWebTextView.onKeyDown(keyCode, event); 3588 } 3589 } 3590 3591 // TODO: should we pass all the keys to DOM or check the meta tag 3592 if (nativeCursorWantsKeyEvents() || true) { 3593 // pass the key to DOM 3594 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3595 // return true as DOM handles the key 3596 return true; 3597 } 3598 3599 // Bubble up the key event as WebView doesn't handle it 3600 return false; 3601 } 3602 3603 @Override 3604 public boolean onKeyUp(int keyCode, KeyEvent event) { 3605 if (DebugFlags.WEB_VIEW) { 3606 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3607 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3608 } 3609 3610 if (mNativeClass == 0) { 3611 return false; 3612 } 3613 3614 // special CALL handling when cursor node's href is "tel:XXX" 3615 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3616 String text = nativeCursorText(); 3617 if (!nativeCursorIsTextInput() && text != null 3618 && text.startsWith(SCHEME_TEL)) { 3619 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3620 getContext().startActivity(intent); 3621 return true; 3622 } 3623 } 3624 3625 // Bubble up the key event if 3626 // 1. it is a system key; or 3627 // 2. the host application wants to handle it; 3628 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3629 return false; 3630 } 3631 3632 // special handling in scroll_zoom state 3633 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 3634 if (KeyEvent.KEYCODE_DPAD_CENTER == keyCode 3635 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN) { 3636 setZoomScrollIn(); 3637 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 3638 invalidate(); 3639 return true; 3640 } 3641 return false; 3642 } 3643 3644 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3645 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3646 if (commitCopy()) { 3647 return true; 3648 } 3649 } 3650 3651 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3652 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3653 // always handle the navigation keys in the UI thread 3654 // Bubble up the key event as WebView doesn't handle it 3655 return false; 3656 } 3657 3658 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3659 // remove the long press message first 3660 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3661 mGotCenterDown = false; 3662 3663 if (mShiftIsPressed) { 3664 return false; 3665 } 3666 3667 // perform the single click 3668 Rect visibleRect = sendOurVisibleRect(); 3669 // Note that sendOurVisibleRect calls viewToContent, so the 3670 // coordinates should be in content coordinates. 3671 if (!nativeCursorIntersects(visibleRect)) { 3672 return false; 3673 } 3674 nativeSetFollowedLink(true); 3675 nativeUpdatePluginReceivesEvents(); 3676 WebViewCore.CursorData data = cursorData(); 3677 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3678 playSoundEffect(SoundEffectConstants.CLICK); 3679 boolean isTextInput = nativeCursorIsTextInput(); 3680 if (isTextInput || !mCallbackProxy.uiOverrideUrlLoading( 3681 nativeCursorText())) { 3682 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3683 nativeCursorNodePointer()); 3684 } 3685 if (isTextInput) { 3686 rebuildWebTextView(); 3687 } 3688 return true; 3689 } 3690 3691 // TODO: should we pass all the keys to DOM or check the meta tag 3692 if (nativeCursorWantsKeyEvents() || true) { 3693 // pass the key to DOM 3694 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3695 // return true as DOM handles the key 3696 return true; 3697 } 3698 3699 // Bubble up the key event as WebView doesn't handle it 3700 return false; 3701 } 3702 3703 /** 3704 * @hide 3705 */ 3706 public void emulateShiftHeld() { 3707 mExtendSelection = false; 3708 mShiftIsPressed = true; 3709 nativeHideCursor(); 3710 } 3711 3712 private boolean commitCopy() { 3713 boolean copiedSomething = false; 3714 if (mExtendSelection) { 3715 // copy region so core operates on copy without touching orig. 3716 Region selection = new Region(nativeGetSelection()); 3717 if (selection.isEmpty() == false) { 3718 Toast.makeText(mContext 3719 , com.android.internal.R.string.text_copied 3720 , Toast.LENGTH_SHORT).show(); 3721 mWebViewCore.sendMessage(EventHub.GET_SELECTION, selection); 3722 copiedSomething = true; 3723 } 3724 mExtendSelection = false; 3725 } 3726 mShiftIsPressed = false; 3727 if (mTouchMode == TOUCH_SELECT_MODE) { 3728 mTouchMode = TOUCH_INIT_MODE; 3729 } 3730 return copiedSomething; 3731 } 3732 3733 // Set this as a hierarchy change listener so we can know when this view 3734 // is removed and still have access to our parent. 3735 @Override 3736 protected void onAttachedToWindow() { 3737 super.onAttachedToWindow(); 3738 ViewParent parent = getParent(); 3739 if (parent instanceof ViewGroup) { 3740 ViewGroup p = (ViewGroup) parent; 3741 p.setOnHierarchyChangeListener(this); 3742 } 3743 } 3744 3745 @Override 3746 protected void onDetachedFromWindow() { 3747 super.onDetachedFromWindow(); 3748 ViewParent parent = getParent(); 3749 if (parent instanceof ViewGroup) { 3750 ViewGroup p = (ViewGroup) parent; 3751 p.setOnHierarchyChangeListener(null); 3752 } 3753 3754 // Clean up the zoom controller 3755 mZoomButtonsController.setVisible(false); 3756 } 3757 3758 // Implementation for OnHierarchyChangeListener 3759 public void onChildViewAdded(View parent, View child) {} 3760 3761 public void onChildViewRemoved(View p, View child) { 3762 if (child == this) { 3763 clearTextEntry(); 3764 } 3765 } 3766 3767 /** 3768 * @deprecated WebView should not have implemented 3769 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3770 * does nothing now. 3771 */ 3772 @Deprecated 3773 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3774 } 3775 3776 // To avoid drawing the cursor ring, and remove the TextView when our window 3777 // loses focus. 3778 @Override 3779 public void onWindowFocusChanged(boolean hasWindowFocus) { 3780 if (hasWindowFocus) { 3781 if (hasFocus()) { 3782 // If our window regained focus, and we have focus, then begin 3783 // drawing the cursor ring 3784 mDrawCursorRing = true; 3785 if (mNativeClass != 0) { 3786 nativeRecordButtons(true, false, true); 3787 if (inEditingMode()) { 3788 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3789 } 3790 } 3791 } else { 3792 // If our window gained focus, but we do not have it, do not 3793 // draw the cursor ring. 3794 mDrawCursorRing = false; 3795 // We do not call nativeRecordButtons here because we assume 3796 // that when we lost focus, or window focus, it got called with 3797 // false for the first parameter 3798 } 3799 } else { 3800 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3801 /* 3802 * The zoom controls come in their own window, so our window 3803 * loses focus. Our policy is to not draw the cursor ring if 3804 * our window is not focused, but this is an exception since 3805 * the user can still navigate the web page with the zoom 3806 * controls showing. 3807 */ 3808 // If our window has lost focus, stop drawing the cursor ring 3809 mDrawCursorRing = false; 3810 } 3811 mGotKeyDown = false; 3812 mShiftIsPressed = false; 3813 if (mNativeClass != 0) { 3814 nativeRecordButtons(false, false, true); 3815 } 3816 setFocusControllerInactive(); 3817 } 3818 invalidate(); 3819 super.onWindowFocusChanged(hasWindowFocus); 3820 } 3821 3822 /* 3823 * Pass a message to WebCore Thread, telling the WebCore::Page's 3824 * FocusController to be "inactive" so that it will 3825 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3826 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3827 */ 3828 /* package */ void setFocusControllerInactive() { 3829 // Do not need to also check whether mWebViewCore is null, because 3830 // mNativeClass is only set if mWebViewCore is non null 3831 if (mNativeClass == 0) return; 3832 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3833 } 3834 3835 @Override 3836 protected void onFocusChanged(boolean focused, int direction, 3837 Rect previouslyFocusedRect) { 3838 if (DebugFlags.WEB_VIEW) { 3839 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3840 } 3841 if (focused) { 3842 // When we regain focus, if we have window focus, resume drawing 3843 // the cursor ring 3844 if (hasWindowFocus()) { 3845 mDrawCursorRing = true; 3846 if (mNativeClass != 0) { 3847 nativeRecordButtons(true, false, true); 3848 } 3849 //} else { 3850 // The WebView has gained focus while we do not have 3851 // windowfocus. When our window lost focus, we should have 3852 // called nativeRecordButtons(false...) 3853 } 3854 } else { 3855 // When we lost focus, unless focus went to the TextView (which is 3856 // true if we are in editing mode), stop drawing the cursor ring. 3857 if (!inEditingMode()) { 3858 mDrawCursorRing = false; 3859 if (mNativeClass != 0) { 3860 nativeRecordButtons(false, false, true); 3861 } 3862 setFocusControllerInactive(); 3863 } 3864 mGotKeyDown = false; 3865 } 3866 3867 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3868 } 3869 3870 @Override 3871 protected void onSizeChanged(int w, int h, int ow, int oh) { 3872 super.onSizeChanged(w, h, ow, oh); 3873 // Center zooming to the center of the screen. 3874 if (mZoomScale == 0) { // unless we're already zooming 3875 mZoomCenterX = getViewWidth() * .5f; 3876 mZoomCenterY = getViewHeight() * .5f; 3877 } 3878 3879 // update mMinZoomScale if the minimum zoom scale is not fixed 3880 if (!mMinZoomScaleFixed) { 3881 mMinZoomScale = (float) getViewWidth() 3882 / (mDrawHistory ? mHistoryPicture.getWidth() 3883 : mZoomOverviewWidth); 3884 } 3885 3886 // we always force, in case our height changed, in which case we still 3887 // want to send the notification over to webkit 3888 setNewZoomScale(mActualScale, true); 3889 } 3890 3891 @Override 3892 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3893 super.onScrollChanged(l, t, oldl, oldt); 3894 3895 sendOurVisibleRect(); 3896 } 3897 3898 3899 @Override 3900 public boolean dispatchKeyEvent(KeyEvent event) { 3901 boolean dispatch = true; 3902 3903 if (!inEditingMode()) { 3904 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3905 mGotKeyDown = true; 3906 } else { 3907 if (!mGotKeyDown) { 3908 /* 3909 * We got a key up for which we were not the recipient of 3910 * the original key down. Don't give it to the view. 3911 */ 3912 dispatch = false; 3913 } 3914 mGotKeyDown = false; 3915 } 3916 } 3917 3918 if (dispatch) { 3919 return super.dispatchKeyEvent(event); 3920 } else { 3921 // We didn't dispatch, so let something else handle the key 3922 return false; 3923 } 3924 } 3925 3926 // Here are the snap align logic: 3927 // 1. If it starts nearly horizontally or vertically, snap align; 3928 // 2. If there is a dramitic direction change, let it go; 3929 // 3. If there is a same direction back and forth, lock it. 3930 3931 // adjustable parameters 3932 private int mMinLockSnapReverseDistance; 3933 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 3934 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 3935 3936 @Override 3937 public boolean onTouchEvent(MotionEvent ev) { 3938 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 3939 return false; 3940 } 3941 3942 if (DebugFlags.WEB_VIEW) { 3943 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 3944 + mTouchMode); 3945 } 3946 3947 int action = ev.getAction(); 3948 float x = ev.getX(); 3949 float y = ev.getY(); 3950 long eventTime = ev.getEventTime(); 3951 3952 // Due to the touch screen edge effect, a touch closer to the edge 3953 // always snapped to the edge. As getViewWidth() can be different from 3954 // getWidth() due to the scrollbar, adjusting the point to match 3955 // getViewWidth(). Same applied to the height. 3956 if (x > getViewWidth() - 1) { 3957 x = getViewWidth() - 1; 3958 } 3959 if (y > getViewHeight() - 1) { 3960 y = getViewHeight() - 1; 3961 } 3962 3963 // pass the touch events from UI thread to WebCore thread 3964 if (mForwardTouchEvents && mTouchMode != SCROLL_ZOOM_OUT 3965 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN 3966 && mTouchMode != SCROLL_ZOOM_ANIMATION_OUT 3967 && (action != MotionEvent.ACTION_MOVE || 3968 eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 3969 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 3970 ted.mAction = action; 3971 ted.mX = viewToContentX((int) x + mScrollX); 3972 ted.mY = viewToContentY((int) y + mScrollY); 3973 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 3974 mLastSentTouchTime = eventTime; 3975 } 3976 3977 int deltaX = (int) (mLastTouchX - x); 3978 int deltaY = (int) (mLastTouchY - y); 3979 3980 switch (action) { 3981 case MotionEvent.ACTION_DOWN: { 3982 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3983 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3984 // no interaction while animation is in progress 3985 break; 3986 } else if (mTouchMode == SCROLL_ZOOM_OUT) { 3987 mLastScrollX = mZoomScrollX; 3988 mLastScrollY = mZoomScrollY; 3989 // If two taps are close, ignore the first tap 3990 } else if (!mScroller.isFinished()) { 3991 // stop the current scroll animation, but if this is 3992 // the start of a fling, allow it to add to the current 3993 // fling's velocity 3994 mScroller.abortAnimation(); 3995 mTouchMode = TOUCH_DRAG_START_MODE; 3996 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 3997 } else if (mShiftIsPressed) { 3998 mSelectX = mScrollX + (int) x; 3999 mSelectY = mScrollY + (int) y; 4000 mTouchMode = TOUCH_SELECT_MODE; 4001 if (DebugFlags.WEB_VIEW) { 4002 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4003 } 4004 nativeMoveSelection(viewToContentX(mSelectX), 4005 viewToContentY(mSelectY), false); 4006 mTouchSelection = mExtendSelection = true; 4007 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4008 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4009 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4010 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4011 } else { 4012 // commit the short press action for the previous tap 4013 doShortPress(); 4014 // continue, mTouchMode should be still TOUCH_INIT_MODE 4015 } 4016 } else { 4017 mTouchMode = TOUCH_INIT_MODE; 4018 mPreventDrag = mForwardTouchEvents; 4019 mWebViewCore.sendMessage( 4020 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4021 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4022 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 4023 (eventTime - mLastTouchUpTime), eventTime); 4024 } 4025 } 4026 // Trigger the link 4027 if (mTouchMode == TOUCH_INIT_MODE 4028 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4029 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4030 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 4031 } 4032 // Remember where the motion event started 4033 mLastTouchX = x; 4034 mLastTouchY = y; 4035 mLastTouchTime = eventTime; 4036 mVelocityTracker = VelocityTracker.obtain(); 4037 mSnapScrollMode = SNAP_NONE; 4038 break; 4039 } 4040 case MotionEvent.ACTION_MOVE: { 4041 if (mTouchMode == TOUCH_DONE_MODE 4042 || mTouchMode == SCROLL_ZOOM_ANIMATION_IN 4043 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 4044 // no dragging during scroll zoom animation 4045 break; 4046 } 4047 if (mTouchMode == SCROLL_ZOOM_OUT) { 4048 // while fully zoomed out, move the virtual window 4049 moveZoomScrollWindow(x, y); 4050 break; 4051 } 4052 mVelocityTracker.addMovement(ev); 4053 4054 if (mTouchMode != TOUCH_DRAG_MODE) { 4055 if (mTouchMode == TOUCH_SELECT_MODE) { 4056 mSelectX = mScrollX + (int) x; 4057 mSelectY = mScrollY + (int) y; 4058 if (DebugFlags.WEB_VIEW) { 4059 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4060 } 4061 nativeMoveSelection(viewToContentX(mSelectX), 4062 viewToContentY(mSelectY), true); 4063 invalidate(); 4064 break; 4065 } 4066 if (mPreventDrag || (deltaX * deltaX + deltaY * deltaY) 4067 < mTouchSlopSquare) { 4068 break; 4069 } 4070 4071 if (mTouchMode == TOUCH_SHORTPRESS_MODE 4072 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4073 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4074 } else if (mTouchMode == TOUCH_INIT_MODE 4075 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4076 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4077 } 4078 4079 // if it starts nearly horizontal or vertical, enforce it 4080 int ax = Math.abs(deltaX); 4081 int ay = Math.abs(deltaY); 4082 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4083 mSnapScrollMode = SNAP_X; 4084 mSnapPositive = deltaX > 0; 4085 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4086 mSnapScrollMode = SNAP_Y; 4087 mSnapPositive = deltaY > 0; 4088 } 4089 4090 mTouchMode = TOUCH_DRAG_MODE; 4091 WebViewCore.pauseUpdate(mWebViewCore); 4092 if (!mDragFromTextInput) { 4093 nativeHideCursor(); 4094 } 4095 WebSettings settings = getSettings(); 4096 if (settings.supportZoom() 4097 && settings.getBuiltInZoomControls() 4098 && !mZoomButtonsController.isVisible() 4099 && (canZoomScrollOut() || 4100 mMinZoomScale < mMaxZoomScale)) { 4101 mZoomButtonsController.setVisible(true); 4102 } 4103 } 4104 4105 // do pan 4106 int newScrollX = pinLocX(mScrollX + deltaX); 4107 deltaX = newScrollX - mScrollX; 4108 int newScrollY = pinLocY(mScrollY + deltaY); 4109 deltaY = newScrollY - mScrollY; 4110 boolean done = false; 4111 if (deltaX == 0 && deltaY == 0) { 4112 done = true; 4113 } else { 4114 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4115 int ax = Math.abs(deltaX); 4116 int ay = Math.abs(deltaY); 4117 if (mSnapScrollMode == SNAP_X) { 4118 // radical change means getting out of snap mode 4119 if (ay > MAX_SLOPE_FOR_DIAG * ax 4120 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4121 mSnapScrollMode = SNAP_NONE; 4122 } 4123 // reverse direction means lock in the snap mode 4124 if ((ax > MAX_SLOPE_FOR_DIAG * ay) && 4125 ((mSnapPositive && 4126 deltaX < -mMinLockSnapReverseDistance) 4127 || (!mSnapPositive && 4128 deltaX > mMinLockSnapReverseDistance))) { 4129 mSnapScrollMode = SNAP_X_LOCK; 4130 } 4131 } else { 4132 // radical change means getting out of snap mode 4133 if ((ax > MAX_SLOPE_FOR_DIAG * ay) 4134 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4135 mSnapScrollMode = SNAP_NONE; 4136 } 4137 // reverse direction means lock in the snap mode 4138 if ((ay > MAX_SLOPE_FOR_DIAG * ax) && 4139 ((mSnapPositive && 4140 deltaY < -mMinLockSnapReverseDistance) 4141 || (!mSnapPositive && 4142 deltaY > mMinLockSnapReverseDistance))) { 4143 mSnapScrollMode = SNAP_Y_LOCK; 4144 } 4145 } 4146 } 4147 4148 if (mSnapScrollMode == SNAP_X 4149 || mSnapScrollMode == SNAP_X_LOCK) { 4150 scrollBy(deltaX, 0); 4151 mLastTouchX = x; 4152 } else if (mSnapScrollMode == SNAP_Y 4153 || mSnapScrollMode == SNAP_Y_LOCK) { 4154 scrollBy(0, deltaY); 4155 mLastTouchY = y; 4156 } else { 4157 scrollBy(deltaX, deltaY); 4158 mLastTouchX = x; 4159 mLastTouchY = y; 4160 } 4161 mLastTouchTime = eventTime; 4162 mUserScroll = true; 4163 } 4164 4165 if (!getSettings().getBuiltInZoomControls()) { 4166 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 4167 boolean showMagnify = canZoomScrollOut(); 4168 if (mZoomControls != null && (showPlusMinus || showMagnify)) { 4169 if (mZoomControls.getVisibility() == View.VISIBLE) { 4170 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4171 } else { 4172 mZoomControls.show(showPlusMinus, showMagnify); 4173 } 4174 mPrivateHandler.postDelayed(mZoomControlRunnable, 4175 ZOOM_CONTROLS_TIMEOUT); 4176 } 4177 } 4178 4179 if (done) { 4180 // return false to indicate that we can't pan out of the 4181 // view space 4182 return false; 4183 } 4184 break; 4185 } 4186 case MotionEvent.ACTION_UP: { 4187 mLastTouchUpTime = eventTime; 4188 switch (mTouchMode) { 4189 case TOUCH_DOUBLE_TAP_MODE: // double tap 4190 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4191 mTouchMode = TOUCH_DONE_MODE; 4192 doDoubleTap(); 4193 break; 4194 case TOUCH_INIT_MODE: // tap 4195 if (ENABLE_DOUBLETAP_ZOOM) { 4196 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4197 if (!mPreventDrag) { 4198 mPrivateHandler.sendMessageDelayed( 4199 mPrivateHandler.obtainMessage( 4200 RELEASE_SINGLE_TAP), 4201 ViewConfiguration.getDoubleTapTimeout()); 4202 } 4203 break; 4204 } 4205 // fall through 4206 case TOUCH_SHORTPRESS_START_MODE: 4207 case TOUCH_SHORTPRESS_MODE: 4208 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4209 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4210 mTouchMode = TOUCH_DONE_MODE; 4211 doShortPress(); 4212 break; 4213 case TOUCH_SELECT_MODE: 4214 commitCopy(); 4215 mTouchSelection = false; 4216 break; 4217 case SCROLL_ZOOM_ANIMATION_IN: 4218 case SCROLL_ZOOM_ANIMATION_OUT: 4219 // no action during scroll animation 4220 break; 4221 case SCROLL_ZOOM_OUT: 4222 if (DebugFlags.WEB_VIEW) { 4223 Log.v(LOGTAG, "ACTION_UP SCROLL_ZOOM_OUT" 4224 + " eventTime - mLastTouchTime=" 4225 + (eventTime - mLastTouchTime)); 4226 } 4227 // for now, always zoom back when the drag completes 4228 if (true || eventTime - mLastTouchTime < TAP_TIMEOUT) { 4229 // but if we tap, zoom in where we tap 4230 if (eventTime - mLastTouchTime < TAP_TIMEOUT) { 4231 zoomScrollTap(x, y); 4232 } 4233 // start zooming in back to the original view 4234 setZoomScrollIn(); 4235 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 4236 invalidate(); 4237 } 4238 break; 4239 case TOUCH_DRAG_MODE: 4240 // if the user waits a while w/o moving before the 4241 // up, we don't want to do a fling 4242 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4243 mVelocityTracker.addMovement(ev); 4244 doFling(); 4245 break; 4246 } 4247 mLastVelocity = 0; 4248 WebViewCore.resumeUpdate(mWebViewCore); 4249 break; 4250 case TOUCH_DRAG_START_MODE: 4251 case TOUCH_DONE_MODE: 4252 // do nothing 4253 break; 4254 } 4255 // we also use mVelocityTracker == null to tell us that we are 4256 // not "moving around", so we can take the slower/prettier 4257 // mode in the drawing code 4258 if (mVelocityTracker != null) { 4259 mVelocityTracker.recycle(); 4260 mVelocityTracker = null; 4261 } 4262 break; 4263 } 4264 case MotionEvent.ACTION_CANCEL: { 4265 // we also use mVelocityTracker == null to tell us that we are 4266 // not "moving around", so we can take the slower/prettier 4267 // mode in the drawing code 4268 if (mVelocityTracker != null) { 4269 mVelocityTracker.recycle(); 4270 mVelocityTracker = null; 4271 } 4272 if (mTouchMode == SCROLL_ZOOM_OUT || 4273 mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 4274 scrollTo(mZoomScrollX, mZoomScrollY); 4275 } else if (mTouchMode == TOUCH_DRAG_MODE) { 4276 WebViewCore.resumeUpdate(mWebViewCore); 4277 } 4278 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4279 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4280 mTouchMode = TOUCH_DONE_MODE; 4281 nativeHideCursor(); 4282 break; 4283 } 4284 } 4285 return true; 4286 } 4287 4288 private long mTrackballFirstTime = 0; 4289 private long mTrackballLastTime = 0; 4290 private float mTrackballRemainsX = 0.0f; 4291 private float mTrackballRemainsY = 0.0f; 4292 private int mTrackballXMove = 0; 4293 private int mTrackballYMove = 0; 4294 private boolean mExtendSelection = false; 4295 private boolean mTouchSelection = false; 4296 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4297 private static final int TRACKBALL_TIMEOUT = 200; 4298 private static final int TRACKBALL_WAIT = 100; 4299 private static final int TRACKBALL_SCALE = 400; 4300 private static final int TRACKBALL_SCROLL_COUNT = 5; 4301 private static final int TRACKBALL_MOVE_COUNT = 10; 4302 private static final int TRACKBALL_MULTIPLIER = 3; 4303 private static final int SELECT_CURSOR_OFFSET = 16; 4304 private int mSelectX = 0; 4305 private int mSelectY = 0; 4306 private boolean mShiftIsPressed = false; 4307 private boolean mTrackballDown = false; 4308 private long mTrackballUpTime = 0; 4309 private long mLastCursorTime = 0; 4310 private Rect mLastCursorBounds; 4311 4312 // Set by default; BrowserActivity clears to interpret trackball data 4313 // directly for movement. Currently, the framework only passes 4314 // arrow key events, not trackball events, from one child to the next 4315 private boolean mMapTrackballToArrowKeys = true; 4316 4317 public void setMapTrackballToArrowKeys(boolean setMap) { 4318 mMapTrackballToArrowKeys = setMap; 4319 } 4320 4321 void resetTrackballTime() { 4322 mTrackballLastTime = 0; 4323 } 4324 4325 @Override 4326 public boolean onTrackballEvent(MotionEvent ev) { 4327 long time = ev.getEventTime(); 4328 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4329 if (ev.getY() > 0) pageDown(true); 4330 if (ev.getY() < 0) pageUp(true); 4331 return true; 4332 } 4333 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4334 mTrackballDown = true; 4335 if (mNativeClass == 0) { 4336 return false; 4337 } 4338 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4339 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4340 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4341 nativeSelectBestAt(mLastCursorBounds); 4342 } 4343 if (DebugFlags.WEB_VIEW) { 4344 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4345 + " time=" + time 4346 + " mLastCursorTime=" + mLastCursorTime); 4347 } 4348 if (isInTouchMode()) requestFocusFromTouch(); 4349 return false; // let common code in onKeyDown at it 4350 } 4351 if (ev.getAction() == MotionEvent.ACTION_UP) { 4352 // LONG_PRESS_CENTER is set in common onKeyDown 4353 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4354 mTrackballDown = false; 4355 mTrackballUpTime = time; 4356 if (mShiftIsPressed) { 4357 if (mExtendSelection) { 4358 commitCopy(); 4359 } else { 4360 mExtendSelection = true; 4361 } 4362 } 4363 if (DebugFlags.WEB_VIEW) { 4364 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4365 + " time=" + time 4366 ); 4367 } 4368 return false; // let common code in onKeyUp at it 4369 } 4370 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4371 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4372 return false; 4373 } 4374 // no move if we're still waiting on SWITCH_TO_CLICK timeout 4375 if (mTouchMode == TOUCH_DOUBLECLICK_MODE) { 4376 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent 2 click quit"); 4377 return true; 4378 } 4379 if (mTrackballDown) { 4380 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4381 return true; // discard move if trackball is down 4382 } 4383 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4384 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4385 return true; 4386 } 4387 // TODO: alternatively we can do panning as touch does 4388 switchOutDrawHistory(); 4389 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4390 if (DebugFlags.WEB_VIEW) { 4391 Log.v(LOGTAG, "onTrackballEvent time=" 4392 + time + " last=" + mTrackballLastTime); 4393 } 4394 mTrackballFirstTime = time; 4395 mTrackballXMove = mTrackballYMove = 0; 4396 } 4397 mTrackballLastTime = time; 4398 if (DebugFlags.WEB_VIEW) { 4399 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4400 } 4401 mTrackballRemainsX += ev.getX(); 4402 mTrackballRemainsY += ev.getY(); 4403 doTrackball(time); 4404 return true; 4405 } 4406 4407 void moveSelection(float xRate, float yRate) { 4408 if (mNativeClass == 0) 4409 return; 4410 int width = getViewWidth(); 4411 int height = getViewHeight(); 4412 mSelectX += scaleTrackballX(xRate, width); 4413 mSelectY += scaleTrackballY(yRate, height); 4414 int maxX = width + mScrollX; 4415 int maxY = height + mScrollY; 4416 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4417 , mSelectX)); 4418 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4419 , mSelectY)); 4420 if (DebugFlags.WEB_VIEW) { 4421 Log.v(LOGTAG, "moveSelection" 4422 + " mSelectX=" + mSelectX 4423 + " mSelectY=" + mSelectY 4424 + " mScrollX=" + mScrollX 4425 + " mScrollY=" + mScrollY 4426 + " xRate=" + xRate 4427 + " yRate=" + yRate 4428 ); 4429 } 4430 nativeMoveSelection(viewToContentX(mSelectX), 4431 viewToContentY(mSelectY), mExtendSelection); 4432 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4433 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4434 : 0; 4435 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4436 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4437 : 0; 4438 pinScrollBy(scrollX, scrollY, true, 0); 4439 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4440 requestRectangleOnScreen(select); 4441 invalidate(); 4442 } 4443 4444 private int scaleTrackballX(float xRate, int width) { 4445 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4446 int nextXMove = xMove; 4447 if (xMove > 0) { 4448 if (xMove > mTrackballXMove) { 4449 xMove -= mTrackballXMove; 4450 } 4451 } else if (xMove < mTrackballXMove) { 4452 xMove -= mTrackballXMove; 4453 } 4454 mTrackballXMove = nextXMove; 4455 return xMove; 4456 } 4457 4458 private int scaleTrackballY(float yRate, int height) { 4459 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4460 int nextYMove = yMove; 4461 if (yMove > 0) { 4462 if (yMove > mTrackballYMove) { 4463 yMove -= mTrackballYMove; 4464 } 4465 } else if (yMove < mTrackballYMove) { 4466 yMove -= mTrackballYMove; 4467 } 4468 mTrackballYMove = nextYMove; 4469 return yMove; 4470 } 4471 4472 private int keyCodeToSoundsEffect(int keyCode) { 4473 switch(keyCode) { 4474 case KeyEvent.KEYCODE_DPAD_UP: 4475 return SoundEffectConstants.NAVIGATION_UP; 4476 case KeyEvent.KEYCODE_DPAD_RIGHT: 4477 return SoundEffectConstants.NAVIGATION_RIGHT; 4478 case KeyEvent.KEYCODE_DPAD_DOWN: 4479 return SoundEffectConstants.NAVIGATION_DOWN; 4480 case KeyEvent.KEYCODE_DPAD_LEFT: 4481 return SoundEffectConstants.NAVIGATION_LEFT; 4482 } 4483 throw new IllegalArgumentException("keyCode must be one of " + 4484 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4485 "KEYCODE_DPAD_LEFT}."); 4486 } 4487 4488 private void doTrackball(long time) { 4489 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4490 if (elapsed == 0) { 4491 elapsed = TRACKBALL_TIMEOUT; 4492 } 4493 float xRate = mTrackballRemainsX * 1000 / elapsed; 4494 float yRate = mTrackballRemainsY * 1000 / elapsed; 4495 if (mShiftIsPressed) { 4496 moveSelection(xRate, yRate); 4497 mTrackballRemainsX = mTrackballRemainsY = 0; 4498 return; 4499 } 4500 float ax = Math.abs(xRate); 4501 float ay = Math.abs(yRate); 4502 float maxA = Math.max(ax, ay); 4503 if (DebugFlags.WEB_VIEW) { 4504 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4505 + " xRate=" + xRate 4506 + " yRate=" + yRate 4507 + " mTrackballRemainsX=" + mTrackballRemainsX 4508 + " mTrackballRemainsY=" + mTrackballRemainsY); 4509 } 4510 int width = mContentWidth - getViewWidth(); 4511 int height = mContentHeight - getViewHeight(); 4512 if (width < 0) width = 0; 4513 if (height < 0) height = 0; 4514 if (mTouchMode == SCROLL_ZOOM_OUT) { 4515 int oldX = mZoomScrollX; 4516 int oldY = mZoomScrollY; 4517 int maxWH = Math.max(width, height); 4518 mZoomScrollX += scaleTrackballX(xRate, maxWH); 4519 mZoomScrollY += scaleTrackballY(yRate, maxWH); 4520 if (DebugFlags.WEB_VIEW) { 4521 Log.v(LOGTAG, "doTrackball SCROLL_ZOOM_OUT" 4522 + " mZoomScrollX=" + mZoomScrollX 4523 + " mZoomScrollY=" + mZoomScrollY); 4524 } 4525 mZoomScrollX = Math.min(width, Math.max(0, mZoomScrollX)); 4526 mZoomScrollY = Math.min(height, Math.max(0, mZoomScrollY)); 4527 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 4528 invalidate(); 4529 } 4530 mTrackballRemainsX = mTrackballRemainsY = 0; 4531 return; 4532 } 4533 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4534 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4535 maxA = Math.max(ax, ay); 4536 int count = Math.max(0, (int) maxA); 4537 int oldScrollX = mScrollX; 4538 int oldScrollY = mScrollY; 4539 if (count > 0) { 4540 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4541 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4542 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4543 KeyEvent.KEYCODE_DPAD_RIGHT; 4544 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4545 if (DebugFlags.WEB_VIEW) { 4546 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4547 + " count=" + count 4548 + " mTrackballRemainsX=" + mTrackballRemainsX 4549 + " mTrackballRemainsY=" + mTrackballRemainsY); 4550 } 4551 if (navHandledKey(selectKeyCode, count, false, time, false)) { 4552 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4553 } 4554 mTrackballRemainsX = mTrackballRemainsY = 0; 4555 } 4556 if (count >= TRACKBALL_SCROLL_COUNT) { 4557 int xMove = scaleTrackballX(xRate, width); 4558 int yMove = scaleTrackballY(yRate, height); 4559 if (DebugFlags.WEB_VIEW) { 4560 Log.v(LOGTAG, "doTrackball pinScrollBy" 4561 + " count=" + count 4562 + " xMove=" + xMove + " yMove=" + yMove 4563 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4564 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4565 ); 4566 } 4567 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4568 xMove = 0; 4569 } 4570 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4571 yMove = 0; 4572 } 4573 if (xMove != 0 || yMove != 0) { 4574 pinScrollBy(xMove, yMove, true, 0); 4575 } 4576 mUserScroll = true; 4577 } 4578 } 4579 4580 private int computeMaxScrollY() { 4581 int maxContentH = computeVerticalScrollRange() + getTitleHeight(); 4582 return Math.max(maxContentH - getHeight(), getTitleHeight()); 4583 } 4584 4585 public void flingScroll(int vx, int vy) { 4586 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4587 int maxY = computeMaxScrollY(); 4588 4589 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 4590 invalidate(); 4591 } 4592 4593 private void doFling() { 4594 if (mVelocityTracker == null) { 4595 return; 4596 } 4597 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4598 int maxY = computeMaxScrollY(); 4599 4600 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 4601 int vx = (int) mVelocityTracker.getXVelocity(); 4602 int vy = (int) mVelocityTracker.getYVelocity(); 4603 4604 if (mSnapScrollMode != SNAP_NONE) { 4605 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_X_LOCK) { 4606 vy = 0; 4607 } else { 4608 vx = 0; 4609 } 4610 } 4611 4612 if (true /* EMG release: make our fling more like Maps' */) { 4613 // maps cuts their velocity in half 4614 vx = vx * 3 / 4; 4615 vy = vy * 3 / 4; 4616 } 4617 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 4618 WebViewCore.resumeUpdate(mWebViewCore); 4619 return; 4620 } 4621 float currentVelocity = mScroller.getCurrVelocity(); 4622 if (mLastVelocity > 0 && currentVelocity > 0) { 4623 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 4624 - Math.atan2(vy, vx))); 4625 final float circle = (float) (Math.PI) * 2.0f; 4626 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 4627 vx += currentVelocity * mLastVelX / mLastVelocity; 4628 vy += currentVelocity * mLastVelY / mLastVelocity; 4629 if (DebugFlags.WEB_VIEW) { 4630 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 4631 } 4632 } else if (DebugFlags.WEB_VIEW) { 4633 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 4634 } 4635 } else if (DebugFlags.WEB_VIEW) { 4636 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 4637 + " current=" + currentVelocity 4638 + " vx=" + vx + " vy=" + vy 4639 + " maxX=" + maxX + " maxY=" + maxY 4640 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 4641 } 4642 mLastVelX = vx; 4643 mLastVelY = vy; 4644 mLastVelocity = (float) Math.hypot(vx, vy); 4645 4646 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 4647 // TODO: duration is calculated based on velocity, if the range is 4648 // small, the animation will stop before duration is up. We may 4649 // want to calculate how long the animation is going to run to precisely 4650 // resume the webcore update. 4651 final int time = mScroller.getDuration(); 4652 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_UPDATE, time); 4653 invalidate(); 4654 } 4655 4656 private boolean zoomWithPreview(float scale) { 4657 float oldScale = mActualScale; 4658 mInitialScrollX = mScrollX; 4659 mInitialScrollY = mScrollY; 4660 4661 // snap to DEFAULT_SCALE if it is close 4662 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 4663 scale = mDefaultScale; 4664 } 4665 4666 setNewZoomScale(scale, false); 4667 4668 if (oldScale != mActualScale) { 4669 // use mZoomPickerScale to see zoom preview first 4670 mZoomStart = SystemClock.uptimeMillis(); 4671 mInvInitialZoomScale = 1.0f / oldScale; 4672 mInvFinalZoomScale = 1.0f / mActualScale; 4673 mZoomScale = mActualScale; 4674 if (!mInZoomOverview) { 4675 mLastScale = scale; 4676 } 4677 invalidate(); 4678 return true; 4679 } else { 4680 return false; 4681 } 4682 } 4683 4684 /** 4685 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 4686 * in charge of installing this view to the view hierarchy. This view will 4687 * become visible when the user starts scrolling via touch and fade away if 4688 * the user does not interact with it. 4689 * <p/> 4690 * API version 3 introduces a built-in zoom mechanism that is shown 4691 * automatically by the MapView. This is the preferred approach for 4692 * showing the zoom UI. 4693 * 4694 * @deprecated The built-in zoom mechanism is preferred, see 4695 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 4696 */ 4697 @Deprecated 4698 public View getZoomControls() { 4699 if (!getSettings().supportZoom()) { 4700 Log.w(LOGTAG, "This WebView doesn't support zoom."); 4701 return null; 4702 } 4703 if (mZoomControls == null) { 4704 mZoomControls = createZoomControls(); 4705 4706 /* 4707 * need to be set to VISIBLE first so that getMeasuredHeight() in 4708 * {@link #onSizeChanged()} can return the measured value for proper 4709 * layout. 4710 */ 4711 mZoomControls.setVisibility(View.VISIBLE); 4712 mZoomControlRunnable = new Runnable() { 4713 public void run() { 4714 4715 /* Don't dismiss the controls if the user has 4716 * focus on them. Wait and check again later. 4717 */ 4718 if (!mZoomControls.hasFocus()) { 4719 mZoomControls.hide(); 4720 } else { 4721 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4722 mPrivateHandler.postDelayed(mZoomControlRunnable, 4723 ZOOM_CONTROLS_TIMEOUT); 4724 } 4725 } 4726 }; 4727 } 4728 return mZoomControls; 4729 } 4730 4731 private ExtendedZoomControls createZoomControls() { 4732 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 4733 , null); 4734 zoomControls.setOnZoomInClickListener(new OnClickListener() { 4735 public void onClick(View v) { 4736 // reset time out 4737 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4738 mPrivateHandler.postDelayed(mZoomControlRunnable, 4739 ZOOM_CONTROLS_TIMEOUT); 4740 zoomIn(); 4741 } 4742 }); 4743 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 4744 public void onClick(View v) { 4745 // reset time out 4746 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4747 mPrivateHandler.postDelayed(mZoomControlRunnable, 4748 ZOOM_CONTROLS_TIMEOUT); 4749 zoomOut(); 4750 } 4751 }); 4752 zoomControls.setOnZoomMagnifyClickListener(new OnClickListener() { 4753 public void onClick(View v) { 4754 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4755 mPrivateHandler.postDelayed(mZoomControlRunnable, 4756 ZOOM_CONTROLS_TIMEOUT); 4757 zoomScrollOut(); 4758 } 4759 }); 4760 return zoomControls; 4761 } 4762 4763 /** 4764 * Gets the {@link ZoomButtonsController} which can be used to add 4765 * additional buttons to the zoom controls window. 4766 * 4767 * @return The instance of {@link ZoomButtonsController} used by this class, 4768 * or null if it is unavailable. 4769 * @hide 4770 */ 4771 public ZoomButtonsController getZoomButtonsController() { 4772 return mZoomButtonsController; 4773 } 4774 4775 /** 4776 * Perform zoom in in the webview 4777 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 4778 */ 4779 public boolean zoomIn() { 4780 // TODO: alternatively we can disallow this during draw history mode 4781 switchOutDrawHistory(); 4782 // Center zooming to the center of the screen. 4783 if (mInZoomOverview) { 4784 // if in overview mode, bring it back to normal mode 4785 mLastTouchX = getViewWidth() * .5f; 4786 mLastTouchY = getViewHeight() * .5f; 4787 doDoubleTap(); 4788 return true; 4789 } else { 4790 mZoomCenterX = getViewWidth() * .5f; 4791 mZoomCenterY = getViewHeight() * .5f; 4792 return zoomWithPreview(mActualScale * 1.25f); 4793 } 4794 } 4795 4796 /** 4797 * Perform zoom out in the webview 4798 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 4799 */ 4800 public boolean zoomOut() { 4801 // TODO: alternatively we can disallow this during draw history mode 4802 switchOutDrawHistory(); 4803 float scale = mActualScale * 0.8f; 4804 if (scale < (mMinZoomScale + 0.1f) && WebView.ENABLE_DOUBLETAP_ZOOM 4805 && mWebViewCore.getSettings().getUseWideViewPort()) { 4806 // when zoom out to min scale, switch to overview mode 4807 doDoubleTap(); 4808 return true; 4809 } else { 4810 // Center zooming to the center of the screen. 4811 mZoomCenterX = getViewWidth() * .5f; 4812 mZoomCenterY = getViewHeight() * .5f; 4813 return zoomWithPreview(scale); 4814 } 4815 } 4816 4817 private void updateSelection() { 4818 if (mNativeClass == 0) { 4819 return; 4820 } 4821 // mLastTouchX and mLastTouchY are the point in the current viewport 4822 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4823 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4824 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 4825 contentX + mNavSlop, contentY + mNavSlop); 4826 nativeSelectBestAt(rect); 4827 } 4828 4829 /** 4830 * Scroll the focused text field/area to match the WebTextView 4831 * @param x New x position of the WebTextView in view coordinates 4832 * @param y New y position of the WebTextView in view coordinates 4833 */ 4834 /*package*/ void scrollFocusedTextInput(int x, int y) { 4835 if (!inEditingMode() || mWebViewCore == null) { 4836 return; 4837 } 4838 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, viewToContentX(x), 4839 viewToContentY(y)); 4840 } 4841 4842 /** 4843 * Set our starting point and time for a drag from the WebTextView. 4844 */ 4845 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 4846 if (!inEditingMode()) { 4847 return; 4848 } 4849 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 4850 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 4851 mLastTouchTime = eventTime; 4852 if (!mScroller.isFinished()) { 4853 abortAnimation(); 4854 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 4855 } 4856 mSnapScrollMode = SNAP_NONE; 4857 mVelocityTracker = VelocityTracker.obtain(); 4858 mTouchMode = TOUCH_DRAG_START_MODE; 4859 } 4860 4861 /** 4862 * Given a motion event from the WebTextView, set its location to our 4863 * coordinates, and handle the event. 4864 */ 4865 /*package*/ boolean textFieldDrag(MotionEvent event) { 4866 if (!inEditingMode()) { 4867 return false; 4868 } 4869 mDragFromTextInput = true; 4870 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 4871 (float) (mWebTextView.getTop() - mScrollY)); 4872 boolean result = onTouchEvent(event); 4873 mDragFromTextInput = false; 4874 return result; 4875 } 4876 4877 /** 4878 * Do a touch up from a WebTextView. This will be handled by webkit to 4879 * change the selection. 4880 * @param event MotionEvent in the WebTextView's coordinates. 4881 */ 4882 /*package*/ void touchUpOnTextField(MotionEvent event) { 4883 if (!inEditingMode()) { 4884 return; 4885 } 4886 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 4887 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 4888 nativeTextInputMotionUp(x, y); 4889 } 4890 4891 /*package*/ void shortPressOnTextField() { 4892 if (inEditingMode()) { 4893 View v = mWebTextView; 4894 int x = viewToContentX((v.getLeft() + v.getRight()) >> 1); 4895 int y = viewToContentY((v.getTop() + v.getBottom()) >> 1); 4896 nativeTextInputMotionUp(x, y); 4897 } 4898 } 4899 4900 private void doShortPress() { 4901 if (mNativeClass == 0) { 4902 return; 4903 } 4904 switchOutDrawHistory(); 4905 // mLastTouchX and mLastTouchY are the point in the current viewport 4906 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4907 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4908 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 4909 if (mLogEvent) { 4910 Checkin.updateStats(mContext.getContentResolver(), 4911 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 4912 } 4913 } 4914 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 4915 playSoundEffect(SoundEffectConstants.CLICK); 4916 } 4917 } 4918 4919 private void doDoubleTap() { 4920 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 4921 return; 4922 } 4923 mZoomCenterX = mLastTouchX; 4924 mZoomCenterY = mLastTouchY; 4925 mInZoomOverview = !mInZoomOverview; 4926 // remove the zoom control after double tap 4927 if (getSettings().getBuiltInZoomControls()) { 4928 if (mZoomButtonsController.isVisible()) { 4929 mZoomButtonsController.setVisible(false); 4930 } 4931 } else { 4932 if (mZoomControlRunnable != null) { 4933 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4934 } 4935 if (mZoomControls != null) { 4936 mZoomControls.hide(); 4937 } 4938 } 4939 if (mInZoomOverview) { 4940 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth); 4941 } else { 4942 // mLastTouchX and mLastTouchY are the point in the current viewport 4943 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 4944 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 4945 int left = nativeGetBlockLeftEdge(contentX, contentY, mActualScale); 4946 if (left != NO_LEFTEDGE) { 4947 // add a 5pt padding to the left edge. Re-calculate the zoom 4948 // center so that the new scroll x will be on the left edge. 4949 mZoomCenterX = left < 5 ? 0 : (left - 5) * mLastScale 4950 * mActualScale / (mLastScale - mActualScale); 4951 } 4952 zoomWithPreview(mLastScale); 4953 } 4954 } 4955 4956 // Called by JNI to handle a touch on a node representing an email address, 4957 // address, or phone number 4958 private void overrideLoading(String url) { 4959 mCallbackProxy.uiOverrideUrlLoading(url); 4960 } 4961 4962 // called by JNI 4963 private void sendPluginState(int state) { 4964 WebViewCore.PluginStateData psd = new WebViewCore.PluginStateData(); 4965 psd.mFrame = nativeCursorFramePointer(); 4966 psd.mNode = nativeCursorNodePointer(); 4967 psd.mState = state; 4968 mWebViewCore.sendMessage(EventHub.PLUGIN_STATE, psd); 4969 } 4970 4971 @Override 4972 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 4973 boolean result = false; 4974 if (inEditingMode()) { 4975 result = mWebTextView.requestFocus(direction, 4976 previouslyFocusedRect); 4977 } else { 4978 result = super.requestFocus(direction, previouslyFocusedRect); 4979 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 4980 // For cases such as GMail, where we gain focus from a direction, 4981 // we want to move to the first available link. 4982 // FIXME: If there are no visible links, we may not want to 4983 int fakeKeyDirection = 0; 4984 switch(direction) { 4985 case View.FOCUS_UP: 4986 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 4987 break; 4988 case View.FOCUS_DOWN: 4989 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 4990 break; 4991 case View.FOCUS_LEFT: 4992 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 4993 break; 4994 case View.FOCUS_RIGHT: 4995 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 4996 break; 4997 default: 4998 return result; 4999 } 5000 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5001 navHandledKey(fakeKeyDirection, 1, true, 0, true); 5002 } 5003 } 5004 } 5005 return result; 5006 } 5007 5008 @Override 5009 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5010 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5011 5012 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5013 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5014 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5015 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5016 5017 int measuredHeight = heightSize; 5018 int measuredWidth = widthSize; 5019 5020 // Grab the content size from WebViewCore. 5021 int contentHeight = contentToViewDimension(mContentHeight); 5022 int contentWidth = contentToViewDimension(mContentWidth); 5023 5024// Log.d(LOGTAG, "------- measure " + heightMode); 5025 5026 if (heightMode != MeasureSpec.EXACTLY) { 5027 mHeightCanMeasure = true; 5028 measuredHeight = contentHeight; 5029 if (heightMode == MeasureSpec.AT_MOST) { 5030 // If we are larger than the AT_MOST height, then our height can 5031 // no longer be measured and we should scroll internally. 5032 if (measuredHeight > heightSize) { 5033 measuredHeight = heightSize; 5034 mHeightCanMeasure = false; 5035 } 5036 } 5037 } else { 5038 mHeightCanMeasure = false; 5039 } 5040 if (mNativeClass != 0) { 5041 nativeSetHeightCanMeasure(mHeightCanMeasure); 5042 } 5043 // For the width, always use the given size unless unspecified. 5044 if (widthMode == MeasureSpec.UNSPECIFIED) { 5045 mWidthCanMeasure = true; 5046 measuredWidth = contentWidth; 5047 } else { 5048 mWidthCanMeasure = false; 5049 } 5050 5051 synchronized (this) { 5052 setMeasuredDimension(measuredWidth, measuredHeight); 5053 } 5054 } 5055 5056 @Override 5057 public boolean requestChildRectangleOnScreen(View child, 5058 Rect rect, 5059 boolean immediate) { 5060 rect.offset(child.getLeft() - child.getScrollX(), 5061 child.getTop() - child.getScrollY()); 5062 5063 int height = getHeight() - getHorizontalScrollbarHeight(); 5064 int screenTop = mScrollY; 5065 int screenBottom = screenTop + height; 5066 5067 int scrollYDelta = 0; 5068 5069 if (rect.bottom > screenBottom) { 5070 int oneThirdOfScreenHeight = height / 3; 5071 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5072 // If the rectangle is too tall to fit in the bottom two thirds 5073 // of the screen, place it at the top. 5074 scrollYDelta = rect.top - screenTop; 5075 } else { 5076 // If the rectangle will still fit on screen, we want its 5077 // top to be in the top third of the screen. 5078 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5079 } 5080 } else if (rect.top < screenTop) { 5081 scrollYDelta = rect.top - screenTop; 5082 } 5083 5084 int width = getWidth() - getVerticalScrollbarWidth(); 5085 int screenLeft = mScrollX; 5086 int screenRight = screenLeft + width; 5087 5088 int scrollXDelta = 0; 5089 5090 if (rect.right > screenRight && rect.left > screenLeft) { 5091 if (rect.width() > width) { 5092 scrollXDelta += (rect.left - screenLeft); 5093 } else { 5094 scrollXDelta += (rect.right - screenRight); 5095 } 5096 } else if (rect.left < screenLeft) { 5097 scrollXDelta -= (screenLeft - rect.left); 5098 } 5099 5100 if ((scrollYDelta | scrollXDelta) != 0) { 5101 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 5102 } 5103 5104 return false; 5105 } 5106 5107 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 5108 String replace, int newStart, int newEnd) { 5109 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 5110 arg.mReplace = replace; 5111 arg.mNewStart = newStart; 5112 arg.mNewEnd = newEnd; 5113 mTextGeneration++; 5114 arg.mTextGeneration = mTextGeneration; 5115 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 5116 } 5117 5118 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 5119 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 5120 mWebViewCore.sendMessage(EventHub.CLICK); 5121 } 5122 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 5123 arg.mEvent = event; 5124 arg.mCurrentText = currentText; 5125 // Increase our text generation number, and pass it to webcore thread 5126 mTextGeneration++; 5127 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 5128 // WebKit's document state is not saved until about to leave the page. 5129 // To make sure the host application, like Browser, has the up to date 5130 // document state when it goes to background, we force to save the 5131 // document state. 5132 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 5133 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 5134 cursorData(), 1000); 5135 } 5136 5137 /* package */ WebViewCore getWebViewCore() { 5138 return mWebViewCore; 5139 } 5140 5141 //------------------------------------------------------------------------- 5142 // Methods can be called from a separate thread, like WebViewCore 5143 // If it needs to call the View system, it has to send message. 5144 //------------------------------------------------------------------------- 5145 5146 /** 5147 * General handler to receive message coming from webkit thread 5148 */ 5149 class PrivateHandler extends Handler { 5150 @Override 5151 public void handleMessage(Message msg) { 5152 if (DebugFlags.WEB_VIEW) { 5153 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 5154 > INVAL_RECT_MSG_ID ? Integer.toString(msg.what) 5155 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 5156 } 5157 switch (msg.what) { 5158 case REMEMBER_PASSWORD: { 5159 mDatabase.setUsernamePassword( 5160 msg.getData().getString("host"), 5161 msg.getData().getString("username"), 5162 msg.getData().getString("password")); 5163 ((Message) msg.obj).sendToTarget(); 5164 break; 5165 } 5166 case NEVER_REMEMBER_PASSWORD: { 5167 mDatabase.setUsernamePassword( 5168 msg.getData().getString("host"), null, null); 5169 ((Message) msg.obj).sendToTarget(); 5170 break; 5171 } 5172 case SWITCH_TO_SHORTPRESS: { 5173 if (mTouchMode == TOUCH_INIT_MODE) { 5174 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 5175 updateSelection(); 5176 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5177 mTouchMode = TOUCH_DONE_MODE; 5178 } 5179 break; 5180 } 5181 case SWITCH_TO_LONGPRESS: { 5182 if (!mPreventDrag) { 5183 mTouchMode = TOUCH_DONE_MODE; 5184 performLongClick(); 5185 rebuildWebTextView(); 5186 } 5187 break; 5188 } 5189 case RELEASE_SINGLE_TAP: { 5190 if (!mPreventDrag) { 5191 mTouchMode = TOUCH_DONE_MODE; 5192 doShortPress(); 5193 } 5194 break; 5195 } 5196 case SCROLL_BY_MSG_ID: 5197 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 5198 break; 5199 case SYNC_SCROLL_TO_MSG_ID: 5200 if (mUserScroll) { 5201 // if user has scrolled explicitly, don't sync the 5202 // scroll position any more 5203 mUserScroll = false; 5204 break; 5205 } 5206 // fall through 5207 case SCROLL_TO_MSG_ID: 5208 if (setContentScrollTo(msg.arg1, msg.arg2)) { 5209 // if we can't scroll to the exact position due to pin, 5210 // send a message to WebCore to re-scroll when we get a 5211 // new picture 5212 mUserScroll = false; 5213 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 5214 msg.arg1, msg.arg2); 5215 } 5216 break; 5217 case SPAWN_SCROLL_TO_MSG_ID: 5218 spawnContentScrollTo(msg.arg1, msg.arg2); 5219 break; 5220 case NEW_PICTURE_MSG_ID: { 5221 WebSettings settings = mWebViewCore.getSettings(); 5222 // called for new content 5223 final int viewWidth = getViewWidth(); 5224 final WebViewCore.DrawData draw = 5225 (WebViewCore.DrawData) msg.obj; 5226 final Point viewSize = draw.mViewPoint; 5227 boolean useWideViewport = settings.getUseWideViewPort(); 5228 WebViewCore.RestoreState restoreState = draw.mRestoreState; 5229 if (restoreState != null) { 5230 mInZoomOverview = false; 5231 mLastScale = restoreState.mTextWrapScale; 5232 if (restoreState.mMinScale == 0) { 5233 if (restoreState.mMobileSite) { 5234 if (draw.mMinPrefWidth > draw.mViewPoint.x) { 5235 mMinZoomScale = (float) viewWidth 5236 / draw.mMinPrefWidth; 5237 mMinZoomScaleFixed = false; 5238 } else { 5239 mMinZoomScale = mDefaultScale; 5240 mMinZoomScaleFixed = true; 5241 } 5242 } else { 5243 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 5244 mMinZoomScaleFixed = false; 5245 } 5246 } else { 5247 mMinZoomScale = restoreState.mMinScale; 5248 mMinZoomScaleFixed = true; 5249 } 5250 if (restoreState.mMaxScale == 0) { 5251 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 5252 } else { 5253 mMaxZoomScale = restoreState.mMaxScale; 5254 } 5255 setNewZoomScale(mLastScale, false); 5256 setContentScrollTo(restoreState.mScrollX, 5257 restoreState.mScrollY); 5258 if (ENABLE_DOUBLETAP_ZOOM && useWideViewport 5259 && settings.getLoadWithOverviewMode()) { 5260 if (restoreState.mViewScale == 0 5261 || (restoreState.mMobileSite 5262 && mMinZoomScale < mDefaultScale)) { 5263 mInZoomOverview = true; 5264 } 5265 } 5266 // As we are on a new page, remove the WebTextView. This 5267 // is necessary for page loads driven by webkit, and in 5268 // particular when the user was on a password field, so 5269 // the WebTextView was visible. 5270 clearTextEntry(); 5271 } 5272 // We update the layout (i.e. request a layout from the 5273 // view system) if the last view size that we sent to 5274 // WebCore matches the view size of the picture we just 5275 // received in the fixed dimension. 5276 final boolean updateLayout = viewSize.x == mLastWidthSent 5277 && viewSize.y == mLastHeightSent; 5278 recordNewContentSize(draw.mWidthHeight.x, 5279 draw.mWidthHeight.y, updateLayout); 5280 if (DebugFlags.WEB_VIEW) { 5281 Rect b = draw.mInvalRegion.getBounds(); 5282 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5283 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5284 } 5285 invalidate(contentToView(draw.mInvalRegion.getBounds())); 5286 if (mPictureListener != null) { 5287 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5288 } 5289 if (useWideViewport) { 5290 mZoomOverviewWidth = Math.max(draw.mMinPrefWidth, 5291 draw.mViewPoint.x); 5292 } 5293 if (!mMinZoomScaleFixed) { 5294 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5295 } 5296 if (!mDrawHistory && mInZoomOverview) { 5297 // fit the content width to the current view. Ignore 5298 // the rounding error case. 5299 if (Math.abs((viewWidth * mInvActualScale) 5300 - mZoomOverviewWidth) > 1) { 5301 setNewZoomScale((float) viewWidth 5302 / mZoomOverviewWidth, false); 5303 } 5304 } 5305 break; 5306 } 5307 case WEBCORE_INITIALIZED_MSG_ID: 5308 // nativeCreate sets mNativeClass to a non-zero value 5309 nativeCreate(msg.arg1); 5310 break; 5311 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5312 // Make sure that the textfield is currently focused 5313 // and representing the same node as the pointer. 5314 if (inEditingMode() && 5315 mWebTextView.isSameTextField(msg.arg1)) { 5316 if (msg.getData().getBoolean("password")) { 5317 Spannable text = (Spannable) mWebTextView.getText(); 5318 int start = Selection.getSelectionStart(text); 5319 int end = Selection.getSelectionEnd(text); 5320 mWebTextView.setInPassword(true); 5321 // Restore the selection, which may have been 5322 // ruined by setInPassword. 5323 Spannable pword = 5324 (Spannable) mWebTextView.getText(); 5325 Selection.setSelection(pword, start, end); 5326 // If the text entry has created more events, ignore 5327 // this one. 5328 } else if (msg.arg2 == mTextGeneration) { 5329 mWebTextView.setTextAndKeepSelection( 5330 (String) msg.obj); 5331 } 5332 } 5333 break; 5334 case UPDATE_TEXT_SELECTION_MSG_ID: 5335 if (inEditingMode() 5336 && mWebTextView.isSameTextField(msg.arg1) 5337 && msg.arg2 == mTextGeneration) { 5338 WebViewCore.TextSelectionData tData 5339 = (WebViewCore.TextSelectionData) msg.obj; 5340 mWebTextView.setSelectionFromWebKit(tData.mStart, 5341 tData.mEnd); 5342 } 5343 break; 5344 case MOVE_OUT_OF_PLUGIN: 5345 if (nativePluginEatsNavKey()) { 5346 navHandledKey(msg.arg1, 1, false, 0, true); 5347 } 5348 break; 5349 case UPDATE_TEXT_ENTRY_MSG_ID: 5350 // this is sent after finishing resize in WebViewCore. Make 5351 // sure the text edit box is still on the screen. 5352 if (inEditingMode() && nativeCursorIsTextInput()) { 5353 mWebTextView.bringIntoView(); 5354 rebuildWebTextView(); 5355 } 5356 break; 5357 case CLEAR_TEXT_ENTRY: 5358 clearTextEntry(); 5359 break; 5360 case INVAL_RECT_MSG_ID: { 5361 Rect r = (Rect)msg.obj; 5362 if (r == null) { 5363 invalidate(); 5364 } else { 5365 // we need to scale r from content into view coords, 5366 // which viewInvalidate() does for us 5367 viewInvalidate(r.left, r.top, r.right, r.bottom); 5368 } 5369 break; 5370 } 5371 case REQUEST_FORM_DATA: 5372 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5373 if (mWebTextView.isSameTextField(msg.arg1)) { 5374 mWebTextView.setAdapterCustom(adapter); 5375 } 5376 break; 5377 case UPDATE_CLIPBOARD: 5378 String str = (String) msg.obj; 5379 if (DebugFlags.WEB_VIEW) { 5380 Log.v(LOGTAG, "UPDATE_CLIPBOARD " + str); 5381 } 5382 try { 5383 IClipboard clip = IClipboard.Stub.asInterface( 5384 ServiceManager.getService("clipboard")); 5385 clip.setClipboardText(str); 5386 } catch (android.os.RemoteException e) { 5387 Log.e(LOGTAG, "Clipboard failed", e); 5388 } 5389 break; 5390 case RESUME_WEBCORE_UPDATE: 5391 WebViewCore.resumeUpdate(mWebViewCore); 5392 break; 5393 5394 case LONG_PRESS_CENTER: 5395 // as this is shared by keydown and trackballdown, reset all 5396 // the states 5397 mGotCenterDown = false; 5398 mTrackballDown = false; 5399 // LONG_PRESS_CENTER is sent as a delayed message. If we 5400 // switch to windows overview, the WebView will be 5401 // temporarily removed from the view system. In that case, 5402 // do nothing. 5403 if (getParent() != null) { 5404 performLongClick(); 5405 } 5406 break; 5407 5408 case WEBCORE_NEED_TOUCH_EVENTS: 5409 mForwardTouchEvents = (msg.arg1 != 0); 5410 break; 5411 5412 case PREVENT_TOUCH_ID: 5413 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5414 mPreventDrag = msg.arg2 == 1; 5415 if (mPreventDrag) { 5416 mTouchMode = TOUCH_DONE_MODE; 5417 } 5418 } 5419 break; 5420 5421 case REQUEST_KEYBOARD: 5422 if (msg.arg1 == 0) { 5423 hideSoftKeyboard(); 5424 } else { 5425 displaySoftKeyboard(false); 5426 } 5427 break; 5428 5429 default: 5430 super.handleMessage(msg); 5431 break; 5432 } 5433 } 5434 } 5435 5436 // Class used to use a dropdown for a <select> element 5437 private class InvokeListBox implements Runnable { 5438 // Whether the listbox allows multiple selection. 5439 private boolean mMultiple; 5440 // Passed in to a list with multiple selection to tell 5441 // which items are selected. 5442 private int[] mSelectedArray; 5443 // Passed in to a list with single selection to tell 5444 // where the initial selection is. 5445 private int mSelection; 5446 5447 private Container[] mContainers; 5448 5449 // Need these to provide stable ids to my ArrayAdapter, 5450 // which normally does not have stable ids. (Bug 1250098) 5451 private class Container extends Object { 5452 String mString; 5453 boolean mEnabled; 5454 int mId; 5455 5456 public String toString() { 5457 return mString; 5458 } 5459 } 5460 5461 /** 5462 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 5463 * and allow filtering. 5464 */ 5465 private class MyArrayListAdapter extends ArrayAdapter<Container> { 5466 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 5467 super(context, 5468 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 5469 com.android.internal.R.layout.select_dialog_singlechoice, 5470 objects); 5471 } 5472 5473 @Override 5474 public boolean hasStableIds() { 5475 // AdapterView's onChanged method uses this to determine whether 5476 // to restore the old state. Return false so that the old (out 5477 // of date) state does not replace the new, valid state. 5478 return false; 5479 } 5480 5481 private Container item(int position) { 5482 if (position < 0 || position >= getCount()) { 5483 return null; 5484 } 5485 return (Container) getItem(position); 5486 } 5487 5488 @Override 5489 public long getItemId(int position) { 5490 Container item = item(position); 5491 if (item == null) { 5492 return -1; 5493 } 5494 return item.mId; 5495 } 5496 5497 @Override 5498 public boolean areAllItemsEnabled() { 5499 return false; 5500 } 5501 5502 @Override 5503 public boolean isEnabled(int position) { 5504 Container item = item(position); 5505 if (item == null) { 5506 return false; 5507 } 5508 return item.mEnabled; 5509 } 5510 } 5511 5512 private InvokeListBox(String[] array, 5513 boolean[] enabled, int[] selected) { 5514 mMultiple = true; 5515 mSelectedArray = selected; 5516 5517 int length = array.length; 5518 mContainers = new Container[length]; 5519 for (int i = 0; i < length; i++) { 5520 mContainers[i] = new Container(); 5521 mContainers[i].mString = array[i]; 5522 mContainers[i].mEnabled = enabled[i]; 5523 mContainers[i].mId = i; 5524 } 5525 } 5526 5527 private InvokeListBox(String[] array, boolean[] enabled, int 5528 selection) { 5529 mSelection = selection; 5530 mMultiple = false; 5531 5532 int length = array.length; 5533 mContainers = new Container[length]; 5534 for (int i = 0; i < length; i++) { 5535 mContainers[i] = new Container(); 5536 mContainers[i].mString = array[i]; 5537 mContainers[i].mEnabled = enabled[i]; 5538 mContainers[i].mId = i; 5539 } 5540 } 5541 5542 /* 5543 * Whenever the data set changes due to filtering, this class ensures 5544 * that the checked item remains checked. 5545 */ 5546 private class SingleDataSetObserver extends DataSetObserver { 5547 private long mCheckedId; 5548 private ListView mListView; 5549 private Adapter mAdapter; 5550 5551 /* 5552 * Create a new observer. 5553 * @param id The ID of the item to keep checked. 5554 * @param l ListView for getting and clearing the checked states 5555 * @param a Adapter for getting the IDs 5556 */ 5557 public SingleDataSetObserver(long id, ListView l, Adapter a) { 5558 mCheckedId = id; 5559 mListView = l; 5560 mAdapter = a; 5561 } 5562 5563 public void onChanged() { 5564 // The filter may have changed which item is checked. Find the 5565 // item that the ListView thinks is checked. 5566 int position = mListView.getCheckedItemPosition(); 5567 long id = mAdapter.getItemId(position); 5568 if (mCheckedId != id) { 5569 // Clear the ListView's idea of the checked item, since 5570 // it is incorrect 5571 mListView.clearChoices(); 5572 // Search for mCheckedId. If it is in the filtered list, 5573 // mark it as checked 5574 int count = mAdapter.getCount(); 5575 for (int i = 0; i < count; i++) { 5576 if (mAdapter.getItemId(i) == mCheckedId) { 5577 mListView.setItemChecked(i, true); 5578 break; 5579 } 5580 } 5581 } 5582 } 5583 5584 public void onInvalidate() {} 5585 } 5586 5587 public void run() { 5588 final ListView listView = (ListView) LayoutInflater.from(mContext) 5589 .inflate(com.android.internal.R.layout.select_dialog, null); 5590 final MyArrayListAdapter adapter = new 5591 MyArrayListAdapter(mContext, mContainers, mMultiple); 5592 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 5593 .setView(listView).setCancelable(true) 5594 .setInverseBackgroundForced(true); 5595 5596 if (mMultiple) { 5597 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 5598 public void onClick(DialogInterface dialog, int which) { 5599 mWebViewCore.sendMessage( 5600 EventHub.LISTBOX_CHOICES, 5601 adapter.getCount(), 0, 5602 listView.getCheckedItemPositions()); 5603 }}); 5604 b.setNegativeButton(android.R.string.cancel, 5605 new DialogInterface.OnClickListener() { 5606 public void onClick(DialogInterface dialog, int which) { 5607 mWebViewCore.sendMessage( 5608 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5609 }}); 5610 } 5611 final AlertDialog dialog = b.create(); 5612 listView.setAdapter(adapter); 5613 listView.setFocusableInTouchMode(true); 5614 // There is a bug (1250103) where the checks in a ListView with 5615 // multiple items selected are associated with the positions, not 5616 // the ids, so the items do not properly retain their checks when 5617 // filtered. Do not allow filtering on multiple lists until 5618 // that bug is fixed. 5619 5620 listView.setTextFilterEnabled(!mMultiple); 5621 if (mMultiple) { 5622 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 5623 int length = mSelectedArray.length; 5624 for (int i = 0; i < length; i++) { 5625 listView.setItemChecked(mSelectedArray[i], true); 5626 } 5627 } else { 5628 listView.setOnItemClickListener(new OnItemClickListener() { 5629 public void onItemClick(AdapterView parent, View v, 5630 int position, long id) { 5631 mWebViewCore.sendMessage( 5632 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 5633 dialog.dismiss(); 5634 } 5635 }); 5636 if (mSelection != -1) { 5637 listView.setSelection(mSelection); 5638 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 5639 listView.setItemChecked(mSelection, true); 5640 DataSetObserver observer = new SingleDataSetObserver( 5641 adapter.getItemId(mSelection), listView, adapter); 5642 adapter.registerDataSetObserver(observer); 5643 } 5644 } 5645 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 5646 public void onCancel(DialogInterface dialog) { 5647 mWebViewCore.sendMessage( 5648 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5649 } 5650 }); 5651 dialog.show(); 5652 } 5653 } 5654 5655 /* 5656 * Request a dropdown menu for a listbox with multiple selection. 5657 * 5658 * @param array Labels for the listbox. 5659 * @param enabledArray Which positions are enabled. 5660 * @param selectedArray Which positions are initally selected. 5661 */ 5662 void requestListBox(String[] array, boolean[]enabledArray, int[] 5663 selectedArray) { 5664 mPrivateHandler.post( 5665 new InvokeListBox(array, enabledArray, selectedArray)); 5666 } 5667 5668 /* 5669 * Request a dropdown menu for a listbox with single selection or a single 5670 * <select> element. 5671 * 5672 * @param array Labels for the listbox. 5673 * @param enabledArray Which positions are enabled. 5674 * @param selection Which position is initally selected. 5675 */ 5676 void requestListBox(String[] array, boolean[]enabledArray, int selection) { 5677 mPrivateHandler.post( 5678 new InvokeListBox(array, enabledArray, selection)); 5679 } 5680 5681 // called by JNI 5682 private void sendMoveMouse(int frame, int node, int x, int y) { 5683 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 5684 new WebViewCore.CursorData(frame, node, x, y)); 5685 } 5686 5687 /* 5688 * Send a mouse move event to the webcore thread. 5689 * 5690 * @param removeFocus Pass true if the "mouse" cursor is now over a node 5691 * which wants key events, but it is not the focus. This 5692 * will make the visual appear as though nothing is in 5693 * focus. Remove the WebTextView, if present, and stop 5694 * drawing the blinking caret. 5695 * called by JNI 5696 */ 5697 private void sendMoveMouseIfLatest(boolean removeFocus) { 5698 if (removeFocus) { 5699 clearTextEntry(); 5700 setFocusControllerInactive(); 5701 } 5702 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 5703 cursorData()); 5704 } 5705 5706 // called by JNI 5707 private void sendMotionUp(int touchGeneration, 5708 int frame, int node, int x, int y) { 5709 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5710 touchUpData.mMoveGeneration = touchGeneration; 5711 touchUpData.mFrame = frame; 5712 touchUpData.mNode = node; 5713 touchUpData.mX = x; 5714 touchUpData.mY = y; 5715 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5716 } 5717 5718 5719 private int getScaledMaxXScroll() { 5720 int width; 5721 if (mHeightCanMeasure == false) { 5722 width = getViewWidth() / 4; 5723 } else { 5724 Rect visRect = new Rect(); 5725 calcOurVisibleRect(visRect); 5726 width = visRect.width() / 2; 5727 } 5728 // FIXME the divisor should be retrieved from somewhere 5729 return viewToContentX(width); 5730 } 5731 5732 private int getScaledMaxYScroll() { 5733 int height; 5734 if (mHeightCanMeasure == false) { 5735 height = getViewHeight() / 4; 5736 } else { 5737 Rect visRect = new Rect(); 5738 calcOurVisibleRect(visRect); 5739 height = visRect.height() / 2; 5740 } 5741 // FIXME the divisor should be retrieved from somewhere 5742 // the closest thing today is hard-coded into ScrollView.java 5743 // (from ScrollView.java, line 363) int maxJump = height/2; 5744 return viewToContentY(height); 5745 } 5746 5747 /** 5748 * Called by JNI to invalidate view 5749 */ 5750 private void viewInvalidate() { 5751 invalidate(); 5752 } 5753 5754 // return true if the key was handled 5755 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 5756 long time, boolean ignorePlugin) { 5757 if (mNativeClass == 0) { 5758 return false; 5759 } 5760 if (ignorePlugin == false && nativePluginEatsNavKey()) { 5761 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 5762 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 5763 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 5764 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 5765 , 0, 0, 0); 5766 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5767 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5768 return true; 5769 } 5770 mLastCursorTime = time; 5771 mLastCursorBounds = nativeGetCursorRingBounds(); 5772 boolean keyHandled 5773 = nativeMoveCursor(keyCode, count, noScroll) == false; 5774 if (DebugFlags.WEB_VIEW) { 5775 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 5776 + " mLastCursorTime=" + mLastCursorTime 5777 + " handled=" + keyHandled); 5778 } 5779 if (keyHandled == false || mHeightCanMeasure == false) { 5780 return keyHandled; 5781 } 5782 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 5783 if (contentCursorRingBounds.isEmpty()) return keyHandled; 5784 Rect viewCursorRingBounds = contentToView(contentCursorRingBounds); 5785 Rect visRect = new Rect(); 5786 calcOurVisibleRect(visRect); 5787 Rect outset = new Rect(visRect); 5788 int maxXScroll = visRect.width() / 2; 5789 int maxYScroll = visRect.height() / 2; 5790 outset.inset(-maxXScroll, -maxYScroll); 5791 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 5792 return keyHandled; 5793 } 5794 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 5795 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 5796 maxXScroll); 5797 if (maxH > 0) { 5798 pinScrollBy(maxH, 0, true, 0); 5799 } else { 5800 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 5801 -maxXScroll); 5802 if (maxH < 0) { 5803 pinScrollBy(maxH, 0, true, 0); 5804 } 5805 } 5806 if (mLastCursorBounds.isEmpty()) return keyHandled; 5807 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 5808 return keyHandled; 5809 } 5810 if (DebugFlags.WEB_VIEW) { 5811 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 5812 + contentCursorRingBounds); 5813 } 5814 requestRectangleOnScreen(viewCursorRingBounds); 5815 mUserScroll = true; 5816 return keyHandled; 5817 } 5818 5819 /** 5820 * Set the background color. It's white by default. Pass 5821 * zero to make the view transparent. 5822 * @param color the ARGB color described by Color.java 5823 */ 5824 public void setBackgroundColor(int color) { 5825 mBackgroundColor = color; 5826 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 5827 } 5828 5829 public void debugDump() { 5830 nativeDebugDump(); 5831 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 5832 } 5833 5834 /** 5835 * Update our cache with updatedText. 5836 * @param updatedText The new text to put in our cache. 5837 */ 5838 /* package */ void updateCachedTextfield(String updatedText) { 5839 // Also place our generation number so that when we look at the cache 5840 // we recognize that it is up to date. 5841 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 5842 } 5843 5844 /* package */ native void nativeClearCursor(); 5845 private native void nativeCreate(int ptr); 5846 private native int nativeCursorFramePointer(); 5847 private native Rect nativeCursorNodeBounds(); 5848 /* package */ native int nativeCursorNodePointer(); 5849 /* package */ native boolean nativeCursorMatchesFocus(); 5850 private native boolean nativeCursorIntersects(Rect visibleRect); 5851 private native boolean nativeCursorIsAnchor(); 5852 private native boolean nativeCursorIsPlugin(); 5853 private native boolean nativeCursorIsTextInput(); 5854 private native Point nativeCursorPosition(); 5855 private native String nativeCursorText(); 5856 /** 5857 * Returns true if the native cursor node says it wants to handle key events 5858 * (ala plugins). This can only be called if mNativeClass is non-zero! 5859 */ 5860 private native boolean nativeCursorWantsKeyEvents(); 5861 private native void nativeDebugDump(); 5862 private native void nativeDestroy(); 5863 private native void nativeDrawCursorRing(Canvas content); 5864 private native void nativeDrawMatches(Canvas canvas); 5865 private native void nativeDrawSelection(Canvas content 5866 , int x, int y, boolean extendSelection); 5867 private native void nativeDrawSelectionRegion(Canvas content); 5868 private native void nativeDumpDisplayTree(String urlOrNull); 5869 private native int nativeFindAll(String findLower, String findUpper); 5870 private native void nativeFindNext(boolean forward); 5871 private native boolean nativeFocusCandidateIsPassword(); 5872 private native boolean nativeFocusCandidateIsRtlText(); 5873 private native boolean nativeFocusCandidateIsTextField(); 5874 private native boolean nativeFocusCandidateIsTextInput(); 5875 private native int nativeFocusCandidateMaxLength(); 5876 /* package */ native String nativeFocusCandidateName(); 5877 private native Rect nativeFocusCandidateNodeBounds(); 5878 /* package */ native int nativeFocusCandidatePointer(); 5879 private native String nativeFocusCandidateText(); 5880 private native int nativeFocusCandidateTextSize(); 5881 /* package */ native int nativeFocusNodePointer(); 5882 private native Rect nativeGetCursorRingBounds(); 5883 private native Region nativeGetSelection(); 5884 private native boolean nativeHasCursorNode(); 5885 private native boolean nativeHasFocusNode(); 5886 private native void nativeHideCursor(); 5887 private native String nativeImageURI(int x, int y); 5888 private native void nativeInstrumentReport(); 5889 /* package */ native void nativeMoveCursorToNextTextInput(); 5890 // return true if the page has been scrolled 5891 private native boolean nativeMotionUp(int x, int y, int slop); 5892 // returns false if it handled the key 5893 private native boolean nativeMoveCursor(int keyCode, int count, 5894 boolean noScroll); 5895 private native int nativeMoveGeneration(); 5896 private native void nativeMoveSelection(int x, int y, 5897 boolean extendSelection); 5898 private native boolean nativePluginEatsNavKey(); 5899 // Like many other of our native methods, you must make sure that 5900 // mNativeClass is not null before calling this method. 5901 private native void nativeRecordButtons(boolean focused, 5902 boolean pressed, boolean invalidate); 5903 private native void nativeSelectBestAt(Rect rect); 5904 private native void nativeSetFindIsDown(); 5905 private native void nativeSetFollowedLink(boolean followed); 5906 private native void nativeSetHeightCanMeasure(boolean measure); 5907 // Returns a value corresponding to CachedFrame::ImeAction 5908 /* package */ native int nativeTextFieldAction(); 5909 /** 5910 * Perform a click on a currently focused text input. Since it is already 5911 * focused, there is no need to go through the nativeMotionUp code, which 5912 * may change the Cursor. 5913 */ 5914 private native void nativeTextInputMotionUp(int x, int y); 5915 private native int nativeTextGeneration(); 5916 // Never call this version except by updateCachedTextfield(String) - 5917 // we always want to pass in our generation number. 5918 private native void nativeUpdateCachedTextfield(String updatedText, 5919 int generation); 5920 private native void nativeUpdatePluginReceivesEvents(); 5921 // return NO_LEFTEDGE means failure. 5922 private static final int NO_LEFTEDGE = -1; 5923 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 5924} 5925