WebView.java revision 6679f2f70813eb93bf88297dc2de5e56bc7d7ca0
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.app.AlertDialog; 20import android.content.Context; 21import android.content.DialogInterface; 22import android.content.Intent; 23import android.content.DialogInterface.OnCancelListener; 24import android.database.DataSetObserver; 25import android.graphics.Bitmap; 26import android.graphics.Canvas; 27import android.graphics.Color; 28import android.graphics.Paint; 29import android.graphics.Path; 30import android.graphics.Picture; 31import android.graphics.Point; 32import android.graphics.Rect; 33import android.graphics.Region; 34import android.net.http.SslCertificate; 35import android.net.Uri; 36import android.os.Bundle; 37import android.os.Handler; 38import android.os.Message; 39import android.os.ServiceManager; 40import android.os.SystemClock; 41import android.provider.Checkin; 42import android.text.IClipboard; 43import android.text.Selection; 44import android.text.Spannable; 45import android.util.AttributeSet; 46import android.util.EventLog; 47import android.util.Log; 48import android.view.Gravity; 49import android.view.KeyEvent; 50import android.view.LayoutInflater; 51import android.view.MotionEvent; 52import android.view.SoundEffectConstants; 53import android.view.VelocityTracker; 54import android.view.View; 55import android.view.ViewConfiguration; 56import android.view.ViewGroup; 57import android.view.ViewParent; 58import android.view.ViewTreeObserver; 59import android.view.animation.AlphaAnimation; 60import android.view.inputmethod.InputMethodManager; 61import android.webkit.WebTextView.AutoCompleteAdapter; 62import android.webkit.WebViewCore.EventHub; 63import android.widget.AbsoluteLayout; 64import android.widget.Adapter; 65import android.widget.AdapterView; 66import android.widget.ArrayAdapter; 67import android.widget.FrameLayout; 68import android.widget.ImageView; 69import android.widget.ListView; 70import android.widget.Scroller; 71import android.widget.Toast; 72import android.widget.ZoomButtonsController; 73import android.widget.ZoomControls; 74import android.widget.AdapterView.OnItemClickListener; 75 76import java.io.File; 77import java.io.FileInputStream; 78import java.io.FileNotFoundException; 79import java.io.FileOutputStream; 80import java.io.IOException; 81import java.net.URLDecoder; 82import java.util.ArrayList; 83import java.util.List; 84 85/** 86 * <p>A View that displays web pages. This class is the basis upon which you 87 * can roll your own web browser or simply display some online content within your Activity. 88 * It uses the WebKit rendering engine to display 89 * web pages and includes methods to navigate forward and backward 90 * through a history, zoom in and out, perform text searches and more.</p> 91 * <p>To enable the built-in zoom, set 92 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 93 * (introduced in API version 3). 94 * <p>Note that, in order for your Activity to access the Internet and load web pages 95 * in a WebView, you must add the <var>INTERNET</var> permissions to your 96 * Android Manifest file:</p> 97 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 98 * 99 * <p>This must be a child of the <code><manifest></code> element.</p> 100 * 101 * <h3>Basic usage</h3> 102 * 103 * <p>By default, a WebView provides no browser-like widgets, does not 104 * enable JavaScript and errors will be ignored. If your goal is only 105 * to display some HTML as a part of your UI, this is probably fine; 106 * the user won't need to interact with the web page beyond reading 107 * it, and the web page won't need to interact with the user. If you 108 * actually want a fully blown web browser, then you probably want to 109 * invoke the Browser application with your URL rather than show it 110 * with a WebView. See {@link android.content.Intent} for more information.</p> 111 * 112 * <pre class="prettyprint"> 113 * WebView webview = new WebView(this); 114 * setContentView(webview); 115 * 116 * // Simplest usage: note that an exception will NOT be thrown 117 * // if there is an error loading this page (see below). 118 * webview.loadUrl("http://slashdot.org/"); 119 * 120 * // Of course you can also load from any string: 121 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 122 * webview.loadData(summary, "text/html", "utf-8"); 123 * // ... although note that there are restrictions on what this HTML can do. 124 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 125 * </pre> 126 * 127 * <p>A WebView has several customization points where you can add your 128 * own behavior. These are:</p> 129 * 130 * <ul> 131 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 132 * This class is called when something that might impact a 133 * browser UI happens, for instance, progress updates and 134 * JavaScript alerts are sent here. 135 * </li> 136 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 137 * It will be called when things happen that impact the 138 * rendering of the content, eg, errors or form submissions. You 139 * can also intercept URL loading here.</li> 140 * <li>Via the {@link android.webkit.WebSettings} class, which contains 141 * miscellaneous configuration. </li> 142 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 143 * This lets you bind Java objects into the WebView so they can be 144 * controlled from the web pages JavaScript.</li> 145 * </ul> 146 * 147 * <p>Here's a more complicated example, showing error handling, 148 * settings, and progress notification:</p> 149 * 150 * <pre class="prettyprint"> 151 * // Let's display the progress in the activity title bar, like the 152 * // browser app does. 153 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 154 * 155 * webview.getSettings().setJavaScriptEnabled(true); 156 * 157 * final Activity activity = this; 158 * webview.setWebChromeClient(new WebChromeClient() { 159 * public void onProgressChanged(WebView view, int progress) { 160 * // Activities and WebViews measure progress with different scales. 161 * // The progress meter will automatically disappear when we reach 100% 162 * activity.setProgress(progress * 1000); 163 * } 164 * }); 165 * webview.setWebViewClient(new WebViewClient() { 166 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 167 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 168 * } 169 * }); 170 * 171 * webview.loadUrl("http://slashdot.org/"); 172 * </pre> 173 * 174 * <h3>Cookie and window management</h3> 175 * 176 * <p>For obvious security reasons, your application has its own 177 * cache, cookie store etc - it does not share the Browser 178 * applications data. Cookies are managed on a separate thread, so 179 * operations like index building don't block the UI 180 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 181 * if you want to use cookies in your application. 182 * </p> 183 * 184 * <p>By default, requests by the HTML to open new windows are 185 * ignored. This is true whether they be opened by JavaScript or by 186 * the target attribute on a link. You can customize your 187 * WebChromeClient to provide your own behaviour for opening multiple windows, 188 * and render them in whatever manner you want.</p> 189 * 190 * <p>Standard behavior for an Activity is to be destroyed and 191 * recreated when the devices orientation is changed. This will cause 192 * the WebView to reload the current page. If you don't want that, you 193 * can set your Activity to handle the orientation and keyboardHidden 194 * changes, and then just leave the WebView alone. It'll automatically 195 * re-orient itself as appropriate.</p> 196 */ 197public class WebView extends AbsoluteLayout 198 implements ViewTreeObserver.OnGlobalFocusChangeListener, 199 ViewGroup.OnHierarchyChangeListener { 200 201 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 202 // the screen all-the-time. Good for profiling our drawing code 203 static private final boolean AUTO_REDRAW_HACK = false; 204 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 205 private boolean mAutoRedraw; 206 207 static final String LOGTAG = "webview"; 208 209 private static class ExtendedZoomControls extends FrameLayout { 210 public ExtendedZoomControls(Context context, AttributeSet attrs) { 211 super(context, attrs); 212 LayoutInflater inflater = (LayoutInflater) 213 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 214 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 215 mPlusMinusZoomControls = (ZoomControls) findViewById( 216 com.android.internal.R.id.zoomControls); 217 mZoomMagnify = (ImageView) findViewById(com.android.internal.R.id.zoomMagnify); 218 } 219 220 public void show(boolean showZoom, boolean canZoomOut) { 221 mPlusMinusZoomControls.setVisibility( 222 showZoom ? View.VISIBLE : View.GONE); 223 mZoomMagnify.setVisibility(canZoomOut ? View.VISIBLE : View.GONE); 224 fade(View.VISIBLE, 0.0f, 1.0f); 225 } 226 227 public void hide() { 228 fade(View.GONE, 1.0f, 0.0f); 229 } 230 231 private void fade(int visibility, float startAlpha, float endAlpha) { 232 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 233 anim.setDuration(500); 234 startAnimation(anim); 235 setVisibility(visibility); 236 } 237 238 public void setIsZoomMagnifyEnabled(boolean isEnabled) { 239 mZoomMagnify.setEnabled(isEnabled); 240 } 241 242 public boolean hasFocus() { 243 return mPlusMinusZoomControls.hasFocus() || mZoomMagnify.hasFocus(); 244 } 245 246 public void setOnZoomInClickListener(OnClickListener listener) { 247 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 248 } 249 250 public void setOnZoomOutClickListener(OnClickListener listener) { 251 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 252 } 253 254 public void setOnZoomMagnifyClickListener(OnClickListener listener) { 255 mZoomMagnify.setOnClickListener(listener); 256 } 257 258 ZoomControls mPlusMinusZoomControls; 259 ImageView mZoomMagnify; 260 } 261 262 /** 263 * Transportation object for returning WebView across thread boundaries. 264 */ 265 public class WebViewTransport { 266 private WebView mWebview; 267 268 /** 269 * Set the WebView to the transportation object. 270 * @param webview The WebView to transport. 271 */ 272 public synchronized void setWebView(WebView webview) { 273 mWebview = webview; 274 } 275 276 /** 277 * Return the WebView object. 278 * @return WebView The transported WebView object. 279 */ 280 public synchronized WebView getWebView() { 281 return mWebview; 282 } 283 } 284 285 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 286 private final CallbackProxy mCallbackProxy; 287 288 private final WebViewDatabase mDatabase; 289 290 // SSL certificate for the main top-level page (if secure) 291 private SslCertificate mCertificate; 292 293 // Native WebView pointer that is 0 until the native object has been 294 // created. 295 private int mNativeClass; 296 // This would be final but it needs to be set to null when the WebView is 297 // destroyed. 298 private WebViewCore mWebViewCore; 299 // Handler for dispatching UI messages. 300 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 301 private WebTextView mWebTextView; 302 // Used to ignore changes to webkit text that arrives to the UI side after 303 // more key events. 304 private int mTextGeneration; 305 306 // Used by WebViewCore to create child views. 307 /* package */ final ViewManager mViewManager; 308 309 /** 310 * Position of the last touch event. 311 */ 312 private float mLastTouchX; 313 private float mLastTouchY; 314 315 /** 316 * Time of the last touch event. 317 */ 318 private long mLastTouchTime; 319 320 /** 321 * Time of the last time sending touch event to WebViewCore 322 */ 323 private long mLastSentTouchTime; 324 325 /** 326 * The minimum elapsed time before sending another ACTION_MOVE event to 327 * WebViewCore. This really should be tuned for each type of the devices. 328 * For example in Google Map api test case, it takes Dream device at least 329 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 330 * triggering the layout and drawing the picture. While the same process 331 * takes 60+ms on the current high speed device. If we make 332 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 333 * to WebViewCore queue and the real layout and draw events will be pushed 334 * to further, which slows down the refresh rate. Choose 50 to favor the 335 * current high speed devices. For Dream like devices, 100 is a better 336 * choice. Maybe make this in the buildspec later. 337 */ 338 private static final int TOUCH_SENT_INTERVAL = 50; 339 340 /** 341 * Helper class to get velocity for fling 342 */ 343 VelocityTracker mVelocityTracker; 344 private int mMaximumFling; 345 346 // use this flag to control whether enabling the new double tap zoom 347 static final boolean ENABLE_DOUBLETAP_ZOOM = true; 348 349 /** 350 * Touch mode 351 */ 352 private int mTouchMode = TOUCH_DONE_MODE; 353 private static final int TOUCH_INIT_MODE = 1; 354 private static final int TOUCH_DRAG_START_MODE = 2; 355 private static final int TOUCH_DRAG_MODE = 3; 356 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 357 private static final int TOUCH_SHORTPRESS_MODE = 5; 358 private static final int TOUCH_DOUBLECLICK_MODE = 6; 359 private static final int TOUCH_DONE_MODE = 7; 360 private static final int TOUCH_SELECT_MODE = 8; 361 // touch mode values specific to scale+scroll 362 private static final int FIRST_SCROLL_ZOOM = 9; 363 private static final int SCROLL_ZOOM_ANIMATION_IN = 9; 364 private static final int SCROLL_ZOOM_ANIMATION_OUT = 10; 365 private static final int SCROLL_ZOOM_OUT = 11; 366 private static final int LAST_SCROLL_ZOOM = 11; 367 // end of touch mode values specific to scale+scroll 368 private static final int TOUCH_DOUBLE_TAP_MODE = 12; 369 370 // Whether to forward the touch events to WebCore 371 private boolean mForwardTouchEvents = false; 372 373 // Whether to prevent drag during touch. The initial value depends on 374 // mForwardTouchEvents. If WebCore wants touch events, we assume it will 375 // take control of touch events unless it says no for touch down event. 376 private boolean mPreventDrag; 377 378 // To keep track of whether the current drag was initiated by a WebTextView, 379 // so that we know not to hide the cursor 380 boolean mDragFromTextInput; 381 382 // Whether or not to draw the cursor ring. 383 private boolean mDrawCursorRing = true; 384 385 // true if onPause has been called (and not onResume) 386 private boolean mIsPaused; 387 388 /** 389 * Customizable constant 390 */ 391 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 392 private int mTouchSlopSquare; 393 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 394 private int mDoubleTapSlopSquare; 395 // pre-computed density adjusted navigation slop 396 private int mNavSlop; 397 // This should be ViewConfiguration.getTapTimeout() 398 // But system time out is 100ms, which is too short for the browser. 399 // In the browser, if it switches out of tap too soon, jump tap won't work. 400 private static final int TAP_TIMEOUT = 200; 401 // This should be ViewConfiguration.getLongPressTimeout() 402 // But system time out is 500ms, which is too short for the browser. 403 // With a short timeout, it's difficult to treat trigger a short press. 404 private static final int LONG_PRESS_TIMEOUT = 1000; 405 // needed to avoid flinging after a pause of no movement 406 private static final int MIN_FLING_TIME = 250; 407 // The time that the Zoom Controls are visible before fading away 408 private static final long ZOOM_CONTROLS_TIMEOUT = 409 ViewConfiguration.getZoomControlsTimeout(); 410 // The amount of content to overlap between two screens when going through 411 // pages with the space bar, in pixels. 412 private static final int PAGE_SCROLL_OVERLAP = 24; 413 414 /** 415 * These prevent calling requestLayout if either dimension is fixed. This 416 * depends on the layout parameters and the measure specs. 417 */ 418 boolean mWidthCanMeasure; 419 boolean mHeightCanMeasure; 420 421 // Remember the last dimensions we sent to the native side so we can avoid 422 // sending the same dimensions more than once. 423 int mLastWidthSent; 424 int mLastHeightSent; 425 426 private int mContentWidth; // cache of value from WebViewCore 427 private int mContentHeight; // cache of value from WebViewCore 428 429 // Need to have the separate control for horizontal and vertical scrollbar 430 // style than the View's single scrollbar style 431 private boolean mOverlayHorizontalScrollbar = true; 432 private boolean mOverlayVerticalScrollbar = false; 433 434 // our standard speed. this way small distances will be traversed in less 435 // time than large distances, but we cap the duration, so that very large 436 // distances won't take too long to get there. 437 private static final int STD_SPEED = 480; // pixels per second 438 // time for the longest scroll animation 439 private static final int MAX_DURATION = 750; // milliseconds 440 private Scroller mScroller; 441 442 private boolean mWrapContent; 443 444 /** 445 * Private message ids 446 */ 447 private static final int REMEMBER_PASSWORD = 1; 448 private static final int NEVER_REMEMBER_PASSWORD = 2; 449 private static final int SWITCH_TO_SHORTPRESS = 3; 450 private static final int SWITCH_TO_LONGPRESS = 4; 451 private static final int RELEASE_SINGLE_TAP = 5; 452 private static final int REQUEST_FORM_DATA = 6; 453 private static final int SWITCH_TO_CLICK = 7; 454 private static final int RESUME_WEBCORE_UPDATE = 8; 455 456 //! arg1=x, arg2=y 457 static final int SCROLL_TO_MSG_ID = 10; 458 static final int SCROLL_BY_MSG_ID = 11; 459 //! arg1=x, arg2=y 460 static final int SPAWN_SCROLL_TO_MSG_ID = 12; 461 //! arg1=x, arg2=y 462 static final int SYNC_SCROLL_TO_MSG_ID = 13; 463 static final int NEW_PICTURE_MSG_ID = 14; 464 static final int UPDATE_TEXT_ENTRY_MSG_ID = 15; 465 static final int WEBCORE_INITIALIZED_MSG_ID = 16; 466 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 17; 467 static final int MOVE_OUT_OF_PLUGIN = 19; 468 static final int CLEAR_TEXT_ENTRY = 20; 469 static final int UPDATE_TEXT_SELECTION_MSG_ID = 21; 470 static final int UPDATE_CLIPBOARD = 22; 471 static final int LONG_PRESS_CENTER = 23; 472 static final int PREVENT_TOUCH_ID = 24; 473 static final int WEBCORE_NEED_TOUCH_EVENTS = 25; 474 // obj=Rect in doc coordinates 475 static final int INVAL_RECT_MSG_ID = 26; 476 static final int REQUEST_KEYBOARD = 27; 477 478 static final String[] HandlerDebugString = { 479 "REMEMBER_PASSWORD", // = 1; 480 "NEVER_REMEMBER_PASSWORD", // = 2; 481 "SWITCH_TO_SHORTPRESS", // = 3; 482 "SWITCH_TO_LONGPRESS", // = 4; 483 "RELEASE_SINGLE_TAP", // = 5; 484 "REQUEST_FORM_DATA", // = 6; 485 "SWITCH_TO_CLICK", // = 7; 486 "RESUME_WEBCORE_UPDATE", // = 8; 487 "9", 488 "SCROLL_TO_MSG_ID", // = 10; 489 "SCROLL_BY_MSG_ID", // = 11; 490 "SPAWN_SCROLL_TO_MSG_ID", // = 12; 491 "SYNC_SCROLL_TO_MSG_ID", // = 13; 492 "NEW_PICTURE_MSG_ID", // = 14; 493 "UPDATE_TEXT_ENTRY_MSG_ID", // = 15; 494 "WEBCORE_INITIALIZED_MSG_ID", // = 16; 495 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 17; 496 "18", // = 18; 497 "MOVE_OUT_OF_PLUGIN", // = 19; 498 "CLEAR_TEXT_ENTRY", // = 20; 499 "UPDATE_TEXT_SELECTION_MSG_ID", // = 21; 500 "UPDATE_CLIPBOARD", // = 22; 501 "LONG_PRESS_CENTER", // = 23; 502 "PREVENT_TOUCH_ID", // = 24; 503 "WEBCORE_NEED_TOUCH_EVENTS", // = 25; 504 "INVAL_RECT_MSG_ID", // = 26; 505 "REQUEST_KEYBOARD" // = 27; 506 }; 507 508 // default scale limit. Depending on the display density 509 private static float DEFAULT_MAX_ZOOM_SCALE; 510 private static float DEFAULT_MIN_ZOOM_SCALE; 511 // scale limit, which can be set through viewport meta tag in the web page 512 private float mMaxZoomScale; 513 private float mMinZoomScale; 514 private boolean mMinZoomScaleFixed = true; 515 516 // initial scale in percent. 0 means using default. 517 private int mInitialScale = 0; 518 519 // while in the zoom overview mode, the page's width is fully fit to the 520 // current window. The page is alive, in another words, you can click to 521 // follow the links. Double tap will toggle between zoom overview mode and 522 // the last zoom scale. 523 boolean mInZoomOverview = false; 524 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 525 // engadget always have wider mContentWidth no matter what viewport size is. 526 int mZoomOverviewWidth = WebViewCore.DEFAULT_VIEWPORT_WIDTH; 527 float mLastScale; 528 529 // default scale. Depending on the display density. 530 static int DEFAULT_SCALE_PERCENT; 531 private float mDefaultScale; 532 533 // set to true temporarily while the zoom control is being dragged 534 private boolean mPreviewZoomOnly = false; 535 536 // computed scale and inverse, from mZoomWidth. 537 private float mActualScale; 538 private float mInvActualScale; 539 // if this is non-zero, it is used on drawing rather than mActualScale 540 private float mZoomScale; 541 private float mInvInitialZoomScale; 542 private float mInvFinalZoomScale; 543 private int mInitialScrollX; 544 private int mInitialScrollY; 545 private long mZoomStart; 546 private static final int ZOOM_ANIMATION_LENGTH = 500; 547 548 private boolean mUserScroll = false; 549 550 private int mSnapScrollMode = SNAP_NONE; 551 private static final int SNAP_NONE = 1; 552 private static final int SNAP_X = 2; 553 private static final int SNAP_Y = 3; 554 private static final int SNAP_X_LOCK = 4; 555 private static final int SNAP_Y_LOCK = 5; 556 private boolean mSnapPositive; 557 558 // Used to match key downs and key ups 559 private boolean mGotKeyDown; 560 561 /* package */ static boolean mLogEvent = true; 562 private static final int EVENT_LOG_ZOOM_LEVEL_CHANGE = 70101; 563 private static final int EVENT_LOG_DOUBLE_TAP_DURATION = 70102; 564 565 // for event log 566 private long mLastTouchUpTime = 0; 567 568 /** 569 * URI scheme for telephone number 570 */ 571 public static final String SCHEME_TEL = "tel:"; 572 /** 573 * URI scheme for email address 574 */ 575 public static final String SCHEME_MAILTO = "mailto:"; 576 /** 577 * URI scheme for map address 578 */ 579 public static final String SCHEME_GEO = "geo:0,0?q="; 580 581 private int mBackgroundColor = Color.WHITE; 582 583 // Used to notify listeners of a new picture. 584 private PictureListener mPictureListener; 585 /** 586 * Interface to listen for new pictures as they change. 587 */ 588 public interface PictureListener { 589 /** 590 * Notify the listener that the picture has changed. 591 * @param view The WebView that owns the picture. 592 * @param picture The new picture. 593 */ 594 public void onNewPicture(WebView view, Picture picture); 595 } 596 597 // FIXME: Want to make this public, but need to change the API file. 598 public /*static*/ class HitTestResult { 599 /** 600 * Default HitTestResult, where the target is unknown 601 */ 602 public static final int UNKNOWN_TYPE = 0; 603 /** 604 * HitTestResult for hitting a HTML::a tag 605 */ 606 public static final int ANCHOR_TYPE = 1; 607 /** 608 * HitTestResult for hitting a phone number 609 */ 610 public static final int PHONE_TYPE = 2; 611 /** 612 * HitTestResult for hitting a map address 613 */ 614 public static final int GEO_TYPE = 3; 615 /** 616 * HitTestResult for hitting an email address 617 */ 618 public static final int EMAIL_TYPE = 4; 619 /** 620 * HitTestResult for hitting an HTML::img tag 621 */ 622 public static final int IMAGE_TYPE = 5; 623 /** 624 * HitTestResult for hitting a HTML::a tag which contains HTML::img 625 */ 626 public static final int IMAGE_ANCHOR_TYPE = 6; 627 /** 628 * HitTestResult for hitting a HTML::a tag with src=http 629 */ 630 public static final int SRC_ANCHOR_TYPE = 7; 631 /** 632 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 633 */ 634 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 635 /** 636 * HitTestResult for hitting an edit text area 637 */ 638 public static final int EDIT_TEXT_TYPE = 9; 639 640 private int mType; 641 private String mExtra; 642 643 HitTestResult() { 644 mType = UNKNOWN_TYPE; 645 } 646 647 private void setType(int type) { 648 mType = type; 649 } 650 651 private void setExtra(String extra) { 652 mExtra = extra; 653 } 654 655 public int getType() { 656 return mType; 657 } 658 659 public String getExtra() { 660 return mExtra; 661 } 662 } 663 664 // The View containing the zoom controls 665 private ExtendedZoomControls mZoomControls; 666 private Runnable mZoomControlRunnable; 667 668 private ZoomButtonsController mZoomButtonsController; 669 670 // These keep track of the center point of the zoom. They are used to 671 // determine the point around which we should zoom. 672 private float mZoomCenterX; 673 private float mZoomCenterY; 674 675 private ZoomButtonsController.OnZoomListener mZoomListener = 676 new ZoomButtonsController.OnZoomListener() { 677 678 public void onVisibilityChanged(boolean visible) { 679 if (visible) { 680 switchOutDrawHistory(); 681 updateZoomButtonsEnabled(); 682 } 683 } 684 685 public void onZoom(boolean zoomIn) { 686 if (zoomIn) { 687 zoomIn(); 688 } else { 689 zoomOut(); 690 } 691 692 updateZoomButtonsEnabled(); 693 } 694 }; 695 696 /** 697 * Construct a new WebView with a Context object. 698 * @param context A Context object used to access application assets. 699 */ 700 public WebView(Context context) { 701 this(context, null); 702 } 703 704 /** 705 * Construct a new WebView with layout parameters. 706 * @param context A Context object used to access application assets. 707 * @param attrs An AttributeSet passed to our parent. 708 */ 709 public WebView(Context context, AttributeSet attrs) { 710 this(context, attrs, com.android.internal.R.attr.webViewStyle); 711 } 712 713 /** 714 * Construct a new WebView with layout parameters and a default style. 715 * @param context A Context object used to access application assets. 716 * @param attrs An AttributeSet passed to our parent. 717 * @param defStyle The default style resource ID. 718 */ 719 public WebView(Context context, AttributeSet attrs, int defStyle) { 720 super(context, attrs, defStyle); 721 init(); 722 723 mCallbackProxy = new CallbackProxy(context, this); 724 mWebViewCore = new WebViewCore(context, this, mCallbackProxy); 725 mDatabase = WebViewDatabase.getInstance(context); 726 mScroller = new Scroller(context); 727 728 mViewManager = new ViewManager(this); 729 730 mZoomButtonsController = new ZoomButtonsController(this); 731 mZoomButtonsController.setOnZoomListener(mZoomListener); 732 // ZoomButtonsController positions the buttons at the bottom, but in 733 // the middle. Change their layout parameters so they appear on the 734 // right. 735 View controls = mZoomButtonsController.getZoomControls(); 736 ViewGroup.LayoutParams params = controls.getLayoutParams(); 737 if (params instanceof FrameLayout.LayoutParams) { 738 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 739 params; 740 frameParams.gravity = Gravity.RIGHT; 741 } 742 } 743 744 private void updateZoomButtonsEnabled() { 745 boolean canZoomIn = mActualScale < mMaxZoomScale; 746 boolean canZoomOut = mActualScale > mMinZoomScale; 747 if (!canZoomIn && !canZoomOut) { 748 // Hide the zoom in and out buttons, as well as the fit to page 749 // button, if the page cannot zoom 750 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 751 } else { 752 // Bring back the hidden zoom controls. 753 mZoomButtonsController.getZoomControls() 754 .setVisibility(View.VISIBLE); 755 // Set each one individually, as a page may be able to zoom in 756 // or out. 757 mZoomButtonsController.setZoomInEnabled(canZoomIn); 758 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 759 } 760 } 761 762 private void init() { 763 setWillNotDraw(false); 764 setFocusable(true); 765 setFocusableInTouchMode(true); 766 setClickable(true); 767 setLongClickable(true); 768 769 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 770 int slop = configuration.getScaledTouchSlop(); 771 mTouchSlopSquare = slop * slop; 772 mMinLockSnapReverseDistance = slop; 773 slop = configuration.getScaledDoubleTapSlop(); 774 mDoubleTapSlopSquare = slop * slop; 775 final float density = getContext().getResources().getDisplayMetrics().density; 776 // use one line height, 16 based on our current default font, for how 777 // far we allow a touch be away from the edge of a link 778 mNavSlop = (int) (16 * density); 779 // density adjusted scale factors 780 DEFAULT_SCALE_PERCENT = (int) (100 * density); 781 mDefaultScale = density; 782 mActualScale = density; 783 mInvActualScale = 1 / density; 784 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 785 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 786 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 787 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 788 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 789 } 790 791 /* package */void updateDefaultZoomDensity(int zoomDensity) { 792 final float density = getContext().getResources().getDisplayMetrics().density 793 * 100 / zoomDensity; 794 if (Math.abs(density - mDefaultScale) > 0.01) { 795 float scaleFactor = density / mDefaultScale; 796 // adjust the limits 797 mNavSlop = (int) (16 * density); 798 DEFAULT_SCALE_PERCENT = (int) (100 * density); 799 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 800 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 801 mDefaultScale = density; 802 mMaxZoomScale *= scaleFactor; 803 mMinZoomScale *= scaleFactor; 804 setNewZoomScale(mActualScale * scaleFactor, false); 805 } 806 } 807 808 /* package */ boolean onSavePassword(String schemePlusHost, String username, 809 String password, final Message resumeMsg) { 810 boolean rVal = false; 811 if (resumeMsg == null) { 812 // null resumeMsg implies saving password silently 813 mDatabase.setUsernamePassword(schemePlusHost, username, password); 814 } else { 815 final Message remember = mPrivateHandler.obtainMessage( 816 REMEMBER_PASSWORD); 817 remember.getData().putString("host", schemePlusHost); 818 remember.getData().putString("username", username); 819 remember.getData().putString("password", password); 820 remember.obj = resumeMsg; 821 822 final Message neverRemember = mPrivateHandler.obtainMessage( 823 NEVER_REMEMBER_PASSWORD); 824 neverRemember.getData().putString("host", schemePlusHost); 825 neverRemember.getData().putString("username", username); 826 neverRemember.getData().putString("password", password); 827 neverRemember.obj = resumeMsg; 828 829 new AlertDialog.Builder(getContext()) 830 .setTitle(com.android.internal.R.string.save_password_label) 831 .setMessage(com.android.internal.R.string.save_password_message) 832 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 833 new DialogInterface.OnClickListener() { 834 public void onClick(DialogInterface dialog, int which) { 835 resumeMsg.sendToTarget(); 836 } 837 }) 838 .setNeutralButton(com.android.internal.R.string.save_password_remember, 839 new DialogInterface.OnClickListener() { 840 public void onClick(DialogInterface dialog, int which) { 841 remember.sendToTarget(); 842 } 843 }) 844 .setNegativeButton(com.android.internal.R.string.save_password_never, 845 new DialogInterface.OnClickListener() { 846 public void onClick(DialogInterface dialog, int which) { 847 neverRemember.sendToTarget(); 848 } 849 }) 850 .setOnCancelListener(new OnCancelListener() { 851 public void onCancel(DialogInterface dialog) { 852 resumeMsg.sendToTarget(); 853 } 854 }).show(); 855 // Return true so that WebViewCore will pause while the dialog is 856 // up. 857 rVal = true; 858 } 859 return rVal; 860 } 861 862 @Override 863 public void setScrollBarStyle(int style) { 864 if (style == View.SCROLLBARS_INSIDE_INSET 865 || style == View.SCROLLBARS_OUTSIDE_INSET) { 866 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 867 } else { 868 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 869 } 870 super.setScrollBarStyle(style); 871 } 872 873 /** 874 * Specify whether the horizontal scrollbar has overlay style. 875 * @param overlay TRUE if horizontal scrollbar should have overlay style. 876 */ 877 public void setHorizontalScrollbarOverlay(boolean overlay) { 878 mOverlayHorizontalScrollbar = overlay; 879 } 880 881 /** 882 * Specify whether the vertical scrollbar has overlay style. 883 * @param overlay TRUE if vertical scrollbar should have overlay style. 884 */ 885 public void setVerticalScrollbarOverlay(boolean overlay) { 886 mOverlayVerticalScrollbar = overlay; 887 } 888 889 /** 890 * Return whether horizontal scrollbar has overlay style 891 * @return TRUE if horizontal scrollbar has overlay style. 892 */ 893 public boolean overlayHorizontalScrollbar() { 894 return mOverlayHorizontalScrollbar; 895 } 896 897 /** 898 * Return whether vertical scrollbar has overlay style 899 * @return TRUE if vertical scrollbar has overlay style. 900 */ 901 public boolean overlayVerticalScrollbar() { 902 return mOverlayVerticalScrollbar; 903 } 904 905 /* 906 * Return the width of the view where the content of WebView should render 907 * to. 908 */ 909 private int getViewWidth() { 910 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 911 return getWidth(); 912 } else { 913 return getWidth() - getVerticalScrollbarWidth(); 914 } 915 } 916 917 /* 918 * Return the height of the view where the content of WebView should render 919 * to. 920 */ 921 private int getViewHeight() { 922 if (!isHorizontalScrollBarEnabled() || mOverlayHorizontalScrollbar) { 923 return getHeight(); 924 } else { 925 return getHeight() - getHorizontalScrollbarHeight(); 926 } 927 } 928 929 /** 930 * @return The SSL certificate for the main top-level page or null if 931 * there is no certificate (the site is not secure). 932 */ 933 public SslCertificate getCertificate() { 934 return mCertificate; 935 } 936 937 /** 938 * Sets the SSL certificate for the main top-level page. 939 */ 940 public void setCertificate(SslCertificate certificate) { 941 // here, the certificate can be null (if the site is not secure) 942 mCertificate = certificate; 943 } 944 945 //------------------------------------------------------------------------- 946 // Methods called by activity 947 //------------------------------------------------------------------------- 948 949 /** 950 * Save the username and password for a particular host in the WebView's 951 * internal database. 952 * @param host The host that required the credentials. 953 * @param username The username for the given host. 954 * @param password The password for the given host. 955 */ 956 public void savePassword(String host, String username, String password) { 957 mDatabase.setUsernamePassword(host, username, password); 958 } 959 960 /** 961 * Set the HTTP authentication credentials for a given host and realm. 962 * 963 * @param host The host for the credentials. 964 * @param realm The realm for the credentials. 965 * @param username The username for the password. If it is null, it means 966 * password can't be saved. 967 * @param password The password 968 */ 969 public void setHttpAuthUsernamePassword(String host, String realm, 970 String username, String password) { 971 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 972 } 973 974 /** 975 * Retrieve the HTTP authentication username and password for a given 976 * host & realm pair 977 * 978 * @param host The host for which the credentials apply. 979 * @param realm The realm for which the credentials apply. 980 * @return String[] if found, String[0] is username, which can be null and 981 * String[1] is password. Return null if it can't find anything. 982 */ 983 public String[] getHttpAuthUsernamePassword(String host, String realm) { 984 return mDatabase.getHttpAuthUsernamePassword(host, realm); 985 } 986 987 /** 988 * Destroy the internal state of the WebView. This method should be called 989 * after the WebView has been removed from the view system. No other 990 * methods may be called on a WebView after destroy. 991 */ 992 public void destroy() { 993 clearTextEntry(); 994 if (mWebViewCore != null) { 995 // Set the handlers to null before destroying WebViewCore so no 996 // more messages will be posted. 997 mCallbackProxy.setWebViewClient(null); 998 mCallbackProxy.setWebChromeClient(null); 999 // Tell WebViewCore to destroy itself 1000 WebViewCore webViewCore = mWebViewCore; 1001 mWebViewCore = null; // prevent using partial webViewCore 1002 webViewCore.destroy(); 1003 // Remove any pending messages that might not be serviced yet. 1004 mPrivateHandler.removeCallbacksAndMessages(null); 1005 mCallbackProxy.removeCallbacksAndMessages(null); 1006 // Wake up the WebCore thread just in case it is waiting for a 1007 // javascript dialog. 1008 synchronized (mCallbackProxy) { 1009 mCallbackProxy.notify(); 1010 } 1011 } 1012 if (mNativeClass != 0) { 1013 nativeDestroy(); 1014 mNativeClass = 0; 1015 } 1016 } 1017 1018 /** 1019 * Enables platform notifications of data state and proxy changes. 1020 */ 1021 public static void enablePlatformNotifications() { 1022 Network.enablePlatformNotifications(); 1023 } 1024 1025 /** 1026 * If platform notifications are enabled, this should be called 1027 * from the Activity's onPause() or onStop(). 1028 */ 1029 public static void disablePlatformNotifications() { 1030 Network.disablePlatformNotifications(); 1031 } 1032 1033 /** 1034 * Sets JavaScript engine flags. 1035 * 1036 * @param flags JS engine flags in a String 1037 * 1038 * @hide pending API solidification 1039 */ 1040 public void setJsFlags(String flags) { 1041 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1042 } 1043 1044 /** 1045 * Inform WebView of the network state. This is used to set 1046 * the javascript property window.navigator.isOnline and 1047 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1048 * @param networkUp boolean indicating if network is available 1049 */ 1050 public void setNetworkAvailable(boolean networkUp) { 1051 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1052 networkUp ? 1 : 0, 0); 1053 } 1054 1055 /** 1056 * Save the state of this WebView used in 1057 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1058 * method no longer stores the display data for this WebView. The previous 1059 * behavior could potentially leak files if {@link #restoreState} was never 1060 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1061 * and restoring the display data. 1062 * @param outState The Bundle to store the WebView state. 1063 * @return The same copy of the back/forward list used to save the state. If 1064 * saveState fails, the returned list will be null. 1065 * @see #savePicture 1066 * @see #restorePicture 1067 */ 1068 public WebBackForwardList saveState(Bundle outState) { 1069 if (outState == null) { 1070 return null; 1071 } 1072 // We grab a copy of the back/forward list because a client of WebView 1073 // may have invalidated the history list by calling clearHistory. 1074 WebBackForwardList list = copyBackForwardList(); 1075 final int currentIndex = list.getCurrentIndex(); 1076 final int size = list.getSize(); 1077 // We should fail saving the state if the list is empty or the index is 1078 // not in a valid range. 1079 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1080 return null; 1081 } 1082 outState.putInt("index", currentIndex); 1083 // FIXME: This should just be a byte[][] instead of ArrayList but 1084 // Parcel.java does not have the code to handle multi-dimensional 1085 // arrays. 1086 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1087 for (int i = 0; i < size; i++) { 1088 WebHistoryItem item = list.getItemAtIndex(i); 1089 byte[] data = item.getFlattenedData(); 1090 if (data == null) { 1091 // It would be very odd to not have any data for a given history 1092 // item. And we will fail to rebuild the history list without 1093 // flattened data. 1094 return null; 1095 } 1096 history.add(data); 1097 } 1098 outState.putSerializable("history", history); 1099 if (mCertificate != null) { 1100 outState.putBundle("certificate", 1101 SslCertificate.saveState(mCertificate)); 1102 } 1103 return list; 1104 } 1105 1106 /** 1107 * Save the current display data to the Bundle given. Used in conjunction 1108 * with {@link #saveState}. 1109 * @param b A Bundle to store the display data. 1110 * @param dest The file to store the serialized picture data. Will be 1111 * overwritten with this WebView's picture data. 1112 * @return True if the picture was successfully saved. 1113 */ 1114 public boolean savePicture(Bundle b, File dest) { 1115 if (dest == null || b == null) { 1116 return false; 1117 } 1118 final Picture p = capturePicture(); 1119 try { 1120 final FileOutputStream out = new FileOutputStream(dest); 1121 p.writeToStream(out); 1122 out.close(); 1123 } catch (FileNotFoundException e){ 1124 e.printStackTrace(); 1125 } catch (IOException e) { 1126 e.printStackTrace(); 1127 } catch (RuntimeException e) { 1128 e.printStackTrace(); 1129 } 1130 if (dest.length() > 0) { 1131 b.putInt("scrollX", mScrollX); 1132 b.putInt("scrollY", mScrollY); 1133 b.putFloat("scale", mActualScale); 1134 if (mInZoomOverview) { 1135 b.putFloat("lastScale", mLastScale); 1136 } 1137 return true; 1138 } 1139 return false; 1140 } 1141 1142 /** 1143 * Restore the display data that was save in {@link #savePicture}. Used in 1144 * conjunction with {@link #restoreState}. 1145 * @param b A Bundle containing the saved display data. 1146 * @param src The file where the picture data was stored. 1147 * @return True if the picture was successfully restored. 1148 */ 1149 public boolean restorePicture(Bundle b, File src) { 1150 if (src == null || b == null) { 1151 return false; 1152 } 1153 if (src.exists()) { 1154 Picture p = null; 1155 try { 1156 final FileInputStream in = new FileInputStream(src); 1157 p = Picture.createFromStream(in); 1158 in.close(); 1159 } catch (FileNotFoundException e){ 1160 e.printStackTrace(); 1161 } catch (RuntimeException e) { 1162 e.printStackTrace(); 1163 } catch (IOException e) { 1164 e.printStackTrace(); 1165 } 1166 if (p != null) { 1167 int sx = b.getInt("scrollX", 0); 1168 int sy = b.getInt("scrollY", 0); 1169 float scale = b.getFloat("scale", 1.0f); 1170 mDrawHistory = true; 1171 mHistoryPicture = p; 1172 mScrollX = sx; 1173 mScrollY = sy; 1174 mHistoryWidth = Math.round(p.getWidth() * scale); 1175 mHistoryHeight = Math.round(p.getHeight() * scale); 1176 // as getWidth() / getHeight() of the view are not 1177 // available yet, set up mActualScale, so that when 1178 // onSizeChanged() is called, the rest will be set 1179 // correctly 1180 mActualScale = scale; 1181 float lastScale = b.getFloat("lastScale", -1.0f); 1182 if (lastScale > 0) { 1183 mInZoomOverview = true; 1184 mLastScale = lastScale; 1185 } else { 1186 mInZoomOverview = false; 1187 } 1188 invalidate(); 1189 return true; 1190 } 1191 } 1192 return false; 1193 } 1194 1195 /** 1196 * Restore the state of this WebView from the given map used in 1197 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1198 * be called to restore the state of the WebView before using the object. If 1199 * it is called after the WebView has had a chance to build state (load 1200 * pages, create a back/forward list, etc.) there may be undesirable 1201 * side-effects. Please note that this method no longer restores the 1202 * display data for this WebView. See {@link #savePicture} and {@link 1203 * #restorePicture} for saving and restoring the display data. 1204 * @param inState The incoming Bundle of state. 1205 * @return The restored back/forward list or null if restoreState failed. 1206 * @see #savePicture 1207 * @see #restorePicture 1208 */ 1209 public WebBackForwardList restoreState(Bundle inState) { 1210 WebBackForwardList returnList = null; 1211 if (inState == null) { 1212 return returnList; 1213 } 1214 if (inState.containsKey("index") && inState.containsKey("history")) { 1215 mCertificate = SslCertificate.restoreState( 1216 inState.getBundle("certificate")); 1217 1218 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1219 final int index = inState.getInt("index"); 1220 // We can't use a clone of the list because we need to modify the 1221 // shared copy, so synchronize instead to prevent concurrent 1222 // modifications. 1223 synchronized (list) { 1224 final List<byte[]> history = 1225 (List<byte[]>) inState.getSerializable("history"); 1226 final int size = history.size(); 1227 // Check the index bounds so we don't crash in native code while 1228 // restoring the history index. 1229 if (index < 0 || index >= size) { 1230 return null; 1231 } 1232 for (int i = 0; i < size; i++) { 1233 byte[] data = history.remove(0); 1234 if (data == null) { 1235 // If we somehow have null data, we cannot reconstruct 1236 // the item and thus our history list cannot be rebuilt. 1237 return null; 1238 } 1239 WebHistoryItem item = new WebHistoryItem(data); 1240 list.addHistoryItem(item); 1241 } 1242 // Grab the most recent copy to return to the caller. 1243 returnList = copyBackForwardList(); 1244 // Update the copy to have the correct index. 1245 returnList.setCurrentIndex(index); 1246 } 1247 // Remove all pending messages because we are restoring previous 1248 // state. 1249 mWebViewCore.removeMessages(); 1250 // Send a restore state message. 1251 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1252 } 1253 return returnList; 1254 } 1255 1256 /** 1257 * Load the given url. 1258 * @param url The url of the resource to load. 1259 */ 1260 public void loadUrl(String url) { 1261 if (url == null) { 1262 return; 1263 } 1264 switchOutDrawHistory(); 1265 mWebViewCore.sendMessage(EventHub.LOAD_URL, url); 1266 clearTextEntry(); 1267 } 1268 1269 /** 1270 * Load the url with postData using "POST" method into the WebView. If url 1271 * is not a network url, it will be loaded with {link 1272 * {@link #loadUrl(String)} instead. 1273 * 1274 * @param url The url of the resource to load. 1275 * @param postData The data will be passed to "POST" request. 1276 */ 1277 public void postUrl(String url, byte[] postData) { 1278 if (URLUtil.isNetworkUrl(url)) { 1279 switchOutDrawHistory(); 1280 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1281 arg.mUrl = url; 1282 arg.mPostData = postData; 1283 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1284 clearTextEntry(); 1285 } else { 1286 loadUrl(url); 1287 } 1288 } 1289 1290 /** 1291 * Load the given data into the WebView. This will load the data into 1292 * WebView using the data: scheme. Content loaded through this mechanism 1293 * does not have the ability to load content from the network. 1294 * @param data A String of data in the given encoding. 1295 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1296 * @param encoding The encoding of the data. i.e. utf-8, base64 1297 */ 1298 public void loadData(String data, String mimeType, String encoding) { 1299 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1300 } 1301 1302 /** 1303 * Load the given data into the WebView, use the provided URL as the base 1304 * URL for the content. The base URL is the URL that represents the page 1305 * that is loaded through this interface. As such, it is used for the 1306 * history entry and to resolve any relative URLs. The failUrl is used if 1307 * browser fails to load the data provided. If it is empty or null, and the 1308 * load fails, then no history entry is created. 1309 * <p> 1310 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1311 * files through "file:///android_asset/" for the sub resources is more 1312 * restricted. If you provide null or empty string as baseUrl, you won't be 1313 * able to access asset files. If the baseUrl is anything other than 1314 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1315 * sub resources. 1316 * 1317 * @param baseUrl Url to resolve relative paths with, if null defaults to 1318 * "about:blank" 1319 * @param data A String of data in the given encoding. 1320 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1321 * defaults to "text/html" 1322 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1323 * @param failUrl URL to use if the content fails to load or null. 1324 */ 1325 public void loadDataWithBaseURL(String baseUrl, String data, 1326 String mimeType, String encoding, String failUrl) { 1327 1328 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1329 loadData(data, mimeType, encoding); 1330 return; 1331 } 1332 switchOutDrawHistory(); 1333 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1334 arg.mBaseUrl = baseUrl; 1335 arg.mData = data; 1336 arg.mMimeType = mimeType; 1337 arg.mEncoding = encoding; 1338 arg.mFailUrl = failUrl; 1339 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1340 clearTextEntry(); 1341 } 1342 1343 /** 1344 * Stop the current load. 1345 */ 1346 public void stopLoading() { 1347 // TODO: should we clear all the messages in the queue before sending 1348 // STOP_LOADING? 1349 switchOutDrawHistory(); 1350 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1351 } 1352 1353 /** 1354 * Reload the current url. 1355 */ 1356 public void reload() { 1357 switchOutDrawHistory(); 1358 mWebViewCore.sendMessage(EventHub.RELOAD); 1359 } 1360 1361 /** 1362 * Return true if this WebView has a back history item. 1363 * @return True iff this WebView has a back history item. 1364 */ 1365 public boolean canGoBack() { 1366 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1367 synchronized (l) { 1368 if (l.getClearPending()) { 1369 return false; 1370 } else { 1371 return l.getCurrentIndex() > 0; 1372 } 1373 } 1374 } 1375 1376 /** 1377 * Go back in the history of this WebView. 1378 */ 1379 public void goBack() { 1380 goBackOrForward(-1); 1381 } 1382 1383 /** 1384 * Return true if this WebView has a forward history item. 1385 * @return True iff this Webview has a forward history item. 1386 */ 1387 public boolean canGoForward() { 1388 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1389 synchronized (l) { 1390 if (l.getClearPending()) { 1391 return false; 1392 } else { 1393 return l.getCurrentIndex() < l.getSize() - 1; 1394 } 1395 } 1396 } 1397 1398 /** 1399 * Go forward in the history of this WebView. 1400 */ 1401 public void goForward() { 1402 goBackOrForward(1); 1403 } 1404 1405 /** 1406 * Return true if the page can go back or forward the given 1407 * number of steps. 1408 * @param steps The negative or positive number of steps to move the 1409 * history. 1410 */ 1411 public boolean canGoBackOrForward(int steps) { 1412 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1413 synchronized (l) { 1414 if (l.getClearPending()) { 1415 return false; 1416 } else { 1417 int newIndex = l.getCurrentIndex() + steps; 1418 return newIndex >= 0 && newIndex < l.getSize(); 1419 } 1420 } 1421 } 1422 1423 /** 1424 * Go to the history item that is the number of steps away from 1425 * the current item. Steps is negative if backward and positive 1426 * if forward. 1427 * @param steps The number of steps to take back or forward in the back 1428 * forward list. 1429 */ 1430 public void goBackOrForward(int steps) { 1431 goBackOrForward(steps, false); 1432 } 1433 1434 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1435 // every time we go back or forward, we want to reset the 1436 // WebView certificate: 1437 // if the new site is secure, we will reload it and get a 1438 // new certificate set; 1439 // if the new site is not secure, the certificate must be 1440 // null, and that will be the case 1441 mCertificate = null; 1442 if (steps != 0) { 1443 clearTextEntry(); 1444 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1445 ignoreSnapshot ? 1 : 0); 1446 } 1447 } 1448 1449 private boolean extendScroll(int y) { 1450 int finalY = mScroller.getFinalY(); 1451 int newY = pinLocY(finalY + y); 1452 if (newY == finalY) return false; 1453 mScroller.setFinalY(newY); 1454 mScroller.extendDuration(computeDuration(0, y)); 1455 return true; 1456 } 1457 1458 /** 1459 * Scroll the contents of the view up by half the view size 1460 * @param top true to jump to the top of the page 1461 * @return true if the page was scrolled 1462 */ 1463 public boolean pageUp(boolean top) { 1464 if (mNativeClass == 0) { 1465 return false; 1466 } 1467 nativeClearCursor(); // start next trackball movement from page edge 1468 if (top) { 1469 // go to the top of the document 1470 return pinScrollTo(mScrollX, 0, true, 0); 1471 } 1472 // Page up 1473 int h = getHeight(); 1474 int y; 1475 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1476 y = -h + PAGE_SCROLL_OVERLAP; 1477 } else { 1478 y = -h / 2; 1479 } 1480 mUserScroll = true; 1481 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1482 : extendScroll(y); 1483 } 1484 1485 /** 1486 * Scroll the contents of the view down by half the page size 1487 * @param bottom true to jump to bottom of page 1488 * @return true if the page was scrolled 1489 */ 1490 public boolean pageDown(boolean bottom) { 1491 if (mNativeClass == 0) { 1492 return false; 1493 } 1494 nativeClearCursor(); // start next trackball movement from page edge 1495 if (bottom) { 1496 return pinScrollTo(mScrollX, mContentHeight, true, 0); 1497 } 1498 // Page down. 1499 int h = getHeight(); 1500 int y; 1501 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1502 y = h - PAGE_SCROLL_OVERLAP; 1503 } else { 1504 y = h / 2; 1505 } 1506 mUserScroll = true; 1507 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1508 : extendScroll(y); 1509 } 1510 1511 /** 1512 * Clear the view so that onDraw() will draw nothing but white background, 1513 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1514 */ 1515 public void clearView() { 1516 mContentWidth = 0; 1517 mContentHeight = 0; 1518 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1519 } 1520 1521 /** 1522 * Return a new picture that captures the current display of the webview. 1523 * This is a copy of the display, and will be unaffected if the webview 1524 * later loads a different URL. 1525 * 1526 * @return a picture containing the current contents of the view. Note this 1527 * picture is of the entire document, and is not restricted to the 1528 * bounds of the view. 1529 */ 1530 public Picture capturePicture() { 1531 if (null == mWebViewCore) return null; // check for out of memory tab 1532 return mWebViewCore.copyContentPicture(); 1533 } 1534 1535 /** 1536 * Return true if the browser is displaying a TextView for text input. 1537 */ 1538 private boolean inEditingMode() { 1539 return mWebTextView != null && mWebTextView.getParent() != null 1540 && mWebTextView.hasFocus(); 1541 } 1542 1543 private void clearTextEntry() { 1544 if (inEditingMode()) { 1545 mWebTextView.remove(); 1546 } 1547 } 1548 1549 /** 1550 * Return the current scale of the WebView 1551 * @return The current scale. 1552 */ 1553 public float getScale() { 1554 return mActualScale; 1555 } 1556 1557 /** 1558 * Set the initial scale for the WebView. 0 means default. If 1559 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1560 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1561 * WebView starts will this value as initial scale. 1562 * 1563 * @param scaleInPercent The initial scale in percent. 1564 */ 1565 public void setInitialScale(int scaleInPercent) { 1566 mInitialScale = scaleInPercent; 1567 } 1568 1569 /** 1570 * Invoke the graphical zoom picker widget for this WebView. This will 1571 * result in the zoom widget appearing on the screen to control the zoom 1572 * level of this WebView. 1573 */ 1574 public void invokeZoomPicker() { 1575 if (!getSettings().supportZoom()) { 1576 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1577 return; 1578 } 1579 clearTextEntry(); 1580 if (getSettings().getBuiltInZoomControls()) { 1581 mZoomButtonsController.setVisible(true); 1582 } else { 1583 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1584 mPrivateHandler.postDelayed(mZoomControlRunnable, 1585 ZOOM_CONTROLS_TIMEOUT); 1586 } 1587 } 1588 1589 /** 1590 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1591 * is found and the anchor has a non-javascript url, the HitTestResult type 1592 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1593 * anchor does not have a url or if it is a javascript url, the type will 1594 * be UNKNOWN_TYPE and the url has to be retrieved through 1595 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1596 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1597 * the "extra" field. A type of 1598 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1599 * a child node. If a phone number is found, the HitTestResult type is set 1600 * to PHONE_TYPE and the phone number is set in the "extra" field of 1601 * HitTestResult. If a map address is found, the HitTestResult type is set 1602 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1603 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1604 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1605 * HitTestResult type is set to UNKNOWN_TYPE. 1606 */ 1607 public HitTestResult getHitTestResult() { 1608 if (mNativeClass == 0) { 1609 return null; 1610 } 1611 1612 HitTestResult result = new HitTestResult(); 1613 if (nativeHasCursorNode()) { 1614 if (nativeCursorIsTextInput()) { 1615 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1616 } else { 1617 String text = nativeCursorText(); 1618 if (text != null) { 1619 if (text.startsWith(SCHEME_TEL)) { 1620 result.setType(HitTestResult.PHONE_TYPE); 1621 result.setExtra(text.substring(SCHEME_TEL.length())); 1622 } else if (text.startsWith(SCHEME_MAILTO)) { 1623 result.setType(HitTestResult.EMAIL_TYPE); 1624 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1625 } else if (text.startsWith(SCHEME_GEO)) { 1626 result.setType(HitTestResult.GEO_TYPE); 1627 result.setExtra(URLDecoder.decode(text 1628 .substring(SCHEME_GEO.length()))); 1629 } else if (nativeCursorIsAnchor()) { 1630 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1631 result.setExtra(text); 1632 } 1633 } 1634 } 1635 } 1636 int type = result.getType(); 1637 if (type == HitTestResult.UNKNOWN_TYPE 1638 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1639 // Now check to see if it is an image. 1640 int contentX = viewToContent((int) mLastTouchX + mScrollX); 1641 int contentY = viewToContent((int) mLastTouchY + mScrollY); 1642 String text = nativeImageURI(contentX, contentY); 1643 if (text != null) { 1644 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1645 HitTestResult.IMAGE_TYPE : 1646 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1647 result.setExtra(text); 1648 } 1649 } 1650 return result; 1651 } 1652 1653 /** 1654 * Request the href of an anchor element due to getFocusNodePath returning 1655 * "href." If hrefMsg is null, this method returns immediately and does not 1656 * dispatch hrefMsg to its target. 1657 * 1658 * @param hrefMsg This message will be dispatched with the result of the 1659 * request as the data member with "url" as key. The result can 1660 * be null. 1661 */ 1662 // FIXME: API change required to change the name of this function. We now 1663 // look at the cursor node, and not the focus node. Also, what is 1664 // getFocusNodePath? 1665 public void requestFocusNodeHref(Message hrefMsg) { 1666 if (hrefMsg == null || mNativeClass == 0) { 1667 return; 1668 } 1669 if (nativeCursorIsAnchor()) { 1670 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1671 nativeCursorFramePointer(), nativeCursorNodePointer(), 1672 hrefMsg); 1673 } 1674 } 1675 1676 /** 1677 * Request the url of the image last touched by the user. msg will be sent 1678 * to its target with a String representing the url as its object. 1679 * 1680 * @param msg This message will be dispatched with the result of the request 1681 * as the data member with "url" as key. The result can be null. 1682 */ 1683 public void requestImageRef(Message msg) { 1684 int contentX = viewToContent((int) mLastTouchX + mScrollX); 1685 int contentY = viewToContent((int) mLastTouchY + mScrollY); 1686 String ref = nativeImageURI(contentX, contentY); 1687 Bundle data = msg.getData(); 1688 data.putString("url", ref); 1689 msg.setData(data); 1690 msg.sendToTarget(); 1691 } 1692 1693 private static int pinLoc(int x, int viewMax, int docMax) { 1694// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1695 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1696 // pin the short document to the top/left of the screen 1697 x = 0; 1698// Log.d(LOGTAG, "--- center " + x); 1699 } else if (x < 0) { 1700 x = 0; 1701// Log.d(LOGTAG, "--- zero"); 1702 } else if (x + viewMax > docMax) { 1703 x = docMax - viewMax; 1704// Log.d(LOGTAG, "--- pin " + x); 1705 } 1706 return x; 1707 } 1708 1709 // Expects x in view coordinates 1710 private int pinLocX(int x) { 1711 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1712 } 1713 1714 // Expects y in view coordinates 1715 private int pinLocY(int y) { 1716 return pinLoc(y, getViewHeight(), computeVerticalScrollRange()); 1717 } 1718 1719 /*package*/ int viewToContent(int x) { 1720 return Math.round(x * mInvActualScale); 1721 } 1722 1723 /*package*/ int contentToView(int x) { 1724 return Math.round(x * mActualScale); 1725 } 1726 1727 // Called by JNI to invalidate the View, given rectangle coordinates in 1728 // content space 1729 private void viewInvalidate(int l, int t, int r, int b) { 1730 invalidate(contentToView(l), contentToView(t), contentToView(r), 1731 contentToView(b)); 1732 } 1733 1734 // Called by JNI to invalidate the View after a delay, given rectangle 1735 // coordinates in content space 1736 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 1737 postInvalidateDelayed(delay, contentToView(l), contentToView(t), 1738 contentToView(r), contentToView(b)); 1739 } 1740 1741 private Rect contentToView(Rect x) { 1742 return new Rect(contentToView(x.left), contentToView(x.top) 1743 , contentToView(x.right), contentToView(x.bottom)); 1744 } 1745 1746 /* call from webcoreview.draw(), so we're still executing in the UI thread 1747 */ 1748 private void recordNewContentSize(int w, int h, boolean updateLayout) { 1749 1750 // premature data from webkit, ignore 1751 if ((w | h) == 0) { 1752 return; 1753 } 1754 1755 // don't abort a scroll animation if we didn't change anything 1756 if (mContentWidth != w || mContentHeight != h) { 1757 // record new dimensions 1758 mContentWidth = w; 1759 mContentHeight = h; 1760 // If history Picture is drawn, don't update scroll. They will be 1761 // updated when we get out of that mode. 1762 if (!mDrawHistory) { 1763 // repin our scroll, taking into account the new content size 1764 int oldX = mScrollX; 1765 int oldY = mScrollY; 1766 mScrollX = pinLocX(mScrollX); 1767 mScrollY = pinLocY(mScrollY); 1768 // android.util.Log.d("skia", "recordNewContentSize - 1769 // abortAnimation"); 1770 mScroller.abortAnimation(); // just in case 1771 if (oldX != mScrollX || oldY != mScrollY) { 1772 sendOurVisibleRect(); 1773 } 1774 } 1775 } 1776 contentSizeChanged(updateLayout); 1777 } 1778 1779 private void setNewZoomScale(float scale, boolean force) { 1780 if (scale < mMinZoomScale) { 1781 scale = mMinZoomScale; 1782 } else if (scale > mMaxZoomScale) { 1783 scale = mMaxZoomScale; 1784 } 1785 if (scale != mActualScale || force) { 1786 if (mDrawHistory) { 1787 // If history Picture is drawn, don't update scroll. They will 1788 // be updated when we get out of that mode. 1789 if (scale != mActualScale && !mPreviewZoomOnly) { 1790 mCallbackProxy.onScaleChanged(mActualScale, scale); 1791 } 1792 mActualScale = scale; 1793 mInvActualScale = 1 / scale; 1794 if (!mPreviewZoomOnly) { 1795 sendViewSizeZoom(); 1796 } 1797 } else { 1798 // update our scroll so we don't appear to jump 1799 // i.e. keep the center of the doc in the center of the view 1800 1801 int oldX = mScrollX; 1802 int oldY = mScrollY; 1803 float ratio = scale * mInvActualScale; // old inverse 1804 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 1805 float sy = ratio * oldY + (ratio - 1) * mZoomCenterY; 1806 1807 // now update our new scale and inverse 1808 if (scale != mActualScale && !mPreviewZoomOnly) { 1809 mCallbackProxy.onScaleChanged(mActualScale, scale); 1810 } 1811 mActualScale = scale; 1812 mInvActualScale = 1 / scale; 1813 1814 // Scale all the child views 1815 mViewManager.scaleAll(); 1816 1817 // as we don't have animation for scaling, don't do animation 1818 // for scrolling, as it causes weird intermediate state 1819 // pinScrollTo(Math.round(sx), Math.round(sy)); 1820 mScrollX = pinLocX(Math.round(sx)); 1821 mScrollY = pinLocY(Math.round(sy)); 1822 1823 if (!mPreviewZoomOnly) { 1824 sendViewSizeZoom(); 1825 sendOurVisibleRect(); 1826 } 1827 } 1828 } 1829 } 1830 1831 // Used to avoid sending many visible rect messages. 1832 private Rect mLastVisibleRectSent; 1833 private Rect mLastGlobalRect; 1834 1835 private Rect sendOurVisibleRect() { 1836 Rect rect = new Rect(); 1837 calcOurContentVisibleRect(rect); 1838 // Rect.equals() checks for null input. 1839 if (!rect.equals(mLastVisibleRectSent)) { 1840 Point pos = new Point(rect.left, rect.top); 1841 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 1842 nativeMoveGeneration(), 0, pos); 1843 mLastVisibleRectSent = rect; 1844 } 1845 Rect globalRect = new Rect(); 1846 if (getGlobalVisibleRect(globalRect) 1847 && !globalRect.equals(mLastGlobalRect)) { 1848 if (DebugFlags.WEB_VIEW) { 1849 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 1850 + globalRect.top + ",r=" + globalRect.right + ",b=" 1851 + globalRect.bottom); 1852 } 1853 // TODO: the global offset is only used by windowRect() 1854 // in ChromeClientAndroid ; other clients such as touch 1855 // and mouse events could return view + screen relative points. 1856 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 1857 mLastGlobalRect = globalRect; 1858 } 1859 return rect; 1860 } 1861 1862 // Sets r to be the visible rectangle of our webview in view coordinates 1863 private void calcOurVisibleRect(Rect r) { 1864 Point p = new Point(); 1865 getGlobalVisibleRect(r, p); 1866 r.offset(-p.x, -p.y); 1867 if (mFindIsUp) { 1868 r.bottom -= FIND_HEIGHT; 1869 } 1870 } 1871 1872 // Sets r to be our visible rectangle in content coordinates 1873 private void calcOurContentVisibleRect(Rect r) { 1874 calcOurVisibleRect(r); 1875 r.left = viewToContent(r.left); 1876 r.top = viewToContent(r.top); 1877 r.right = viewToContent(r.right); 1878 r.bottom = viewToContent(r.bottom); 1879 } 1880 1881 static class ViewSizeData { 1882 int mWidth; 1883 int mHeight; 1884 int mTextWrapWidth; 1885 float mScale; 1886 } 1887 1888 /** 1889 * Compute unzoomed width and height, and if they differ from the last 1890 * values we sent, send them to webkit (to be used has new viewport) 1891 * 1892 * @return true if new values were sent 1893 */ 1894 private boolean sendViewSizeZoom() { 1895 int viewWidth = getViewWidth(); 1896 int newWidth = Math.round(viewWidth * mInvActualScale); 1897 int newHeight = Math.round(getViewHeight() * mInvActualScale); 1898 /* 1899 * Because the native side may have already done a layout before the 1900 * View system was able to measure us, we have to send a height of 0 to 1901 * remove excess whitespace when we grow our width. This will trigger a 1902 * layout and a change in content size. This content size change will 1903 * mean that contentSizeChanged will either call this method directly or 1904 * indirectly from onSizeChanged. 1905 */ 1906 if (newWidth > mLastWidthSent && mWrapContent) { 1907 newHeight = 0; 1908 } 1909 // Avoid sending another message if the dimensions have not changed. 1910 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 1911 ViewSizeData data = new ViewSizeData(); 1912 data.mWidth = newWidth; 1913 data.mHeight = newHeight; 1914 // while in zoom overview mode, the text are wrapped to the screen 1915 // width matching mLastScale. So that we don't trigger re-flow while 1916 // toggling between overview mode and normal mode. 1917 data.mTextWrapWidth = mInZoomOverview ? Math.round(viewWidth 1918 / mLastScale) : newWidth; 1919 data.mScale = mActualScale; 1920 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 1921 mLastWidthSent = newWidth; 1922 mLastHeightSent = newHeight; 1923 return true; 1924 } 1925 return false; 1926 } 1927 1928 @Override 1929 protected int computeHorizontalScrollRange() { 1930 if (mDrawHistory) { 1931 return mHistoryWidth; 1932 } else { 1933 return contentToView(mContentWidth); 1934 } 1935 } 1936 1937 // Make sure this stays in sync with the actual height of the FindDialog. 1938 private static final int FIND_HEIGHT = 79; 1939 1940 @Override 1941 protected int computeVerticalScrollRange() { 1942 if (mDrawHistory) { 1943 return mHistoryHeight; 1944 } else { 1945 int height = contentToView(mContentHeight); 1946 if (mFindIsUp) { 1947 height += FIND_HEIGHT; 1948 } 1949 return height; 1950 } 1951 } 1952 1953 /** 1954 * Get the url for the current page. This is not always the same as the url 1955 * passed to WebViewClient.onPageStarted because although the load for 1956 * that url has begun, the current page may not have changed. 1957 * @return The url for the current page. 1958 */ 1959 public String getUrl() { 1960 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1961 return h != null ? h.getUrl() : null; 1962 } 1963 1964 /** 1965 * Get the original url for the current page. This is not always the same 1966 * as the url passed to WebViewClient.onPageStarted because although the 1967 * load for that url has begun, the current page may not have changed. 1968 * Also, there may have been redirects resulting in a different url to that 1969 * originally requested. 1970 * @return The url that was originally requested for the current page. 1971 */ 1972 public String getOriginalUrl() { 1973 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1974 return h != null ? h.getOriginalUrl() : null; 1975 } 1976 1977 /** 1978 * Get the title for the current page. This is the title of the current page 1979 * until WebViewClient.onReceivedTitle is called. 1980 * @return The title for the current page. 1981 */ 1982 public String getTitle() { 1983 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1984 return h != null ? h.getTitle() : null; 1985 } 1986 1987 /** 1988 * Get the favicon for the current page. This is the favicon of the current 1989 * page until WebViewClient.onReceivedIcon is called. 1990 * @return The favicon for the current page. 1991 */ 1992 public Bitmap getFavicon() { 1993 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 1994 return h != null ? h.getFavicon() : null; 1995 } 1996 1997 /** 1998 * Get the touch icon url for the apple-touch-icon <link> element. 1999 * @hide 2000 */ 2001 public String getTouchIconUrl() { 2002 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2003 return h != null ? h.getTouchIconUrl() : null; 2004 } 2005 2006 /** 2007 * Get the progress for the current page. 2008 * @return The progress for the current page between 0 and 100. 2009 */ 2010 public int getProgress() { 2011 return mCallbackProxy.getProgress(); 2012 } 2013 2014 /** 2015 * @return the height of the HTML content. 2016 */ 2017 public int getContentHeight() { 2018 return mContentHeight; 2019 } 2020 2021 /** 2022 * Pause all layout, parsing, and javascript timers for all webviews. This 2023 * is a global requests, not restricted to just this webview. This can be 2024 * useful if the application has been paused. 2025 */ 2026 public void pauseTimers() { 2027 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2028 } 2029 2030 /** 2031 * Resume all layout, parsing, and javascript timers for all webviews. 2032 * This will resume dispatching all timers. 2033 */ 2034 public void resumeTimers() { 2035 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2036 } 2037 2038 /** 2039 * Call this to pause any extra processing associated with this view and 2040 * its associated DOM/plugins/javascript/etc. For example, if the view is 2041 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2042 * network traffic. When the view is again "active", call onResume(). 2043 * 2044 * Note that this differs from pauseTimers(), which affects all views/DOMs 2045 * @hide 2046 */ 2047 public void onPause() { 2048 if (!mIsPaused) { 2049 mIsPaused = true; 2050 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2051 } 2052 } 2053 2054 /** 2055 * Call this to balanace a previous call to onPause() 2056 * @hide 2057 */ 2058 public void onResume() { 2059 if (mIsPaused) { 2060 mIsPaused = false; 2061 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2062 } 2063 } 2064 2065 /** 2066 * Returns true if the view is paused, meaning onPause() was called. Calling 2067 * onResume() sets the paused state back to false. 2068 * @hide 2069 */ 2070 public boolean isPaused() { 2071 return mIsPaused; 2072 } 2073 2074 /** 2075 * Call this to inform the view that memory is low so that it can 2076 * free any available memory. 2077 * @hide 2078 */ 2079 public void freeMemory() { 2080 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2081 } 2082 2083 /** 2084 * Clear the resource cache. Note that the cache is per-application, so 2085 * this will clear the cache for all WebViews used. 2086 * 2087 * @param includeDiskFiles If false, only the RAM cache is cleared. 2088 */ 2089 public void clearCache(boolean includeDiskFiles) { 2090 // Note: this really needs to be a static method as it clears cache for all 2091 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2092 // we can't make this static. 2093 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2094 includeDiskFiles ? 1 : 0, 0); 2095 } 2096 2097 /** 2098 * Make sure that clearing the form data removes the adapter from the 2099 * currently focused textfield if there is one. 2100 */ 2101 public void clearFormData() { 2102 if (inEditingMode()) { 2103 AutoCompleteAdapter adapter = null; 2104 mWebTextView.setAdapterCustom(adapter); 2105 } 2106 } 2107 2108 /** 2109 * Tell the WebView to clear its internal back/forward list. 2110 */ 2111 public void clearHistory() { 2112 mCallbackProxy.getBackForwardList().setClearPending(); 2113 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2114 } 2115 2116 /** 2117 * Clear the SSL preferences table stored in response to proceeding with SSL 2118 * certificate errors. 2119 */ 2120 public void clearSslPreferences() { 2121 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2122 } 2123 2124 /** 2125 * Return the WebBackForwardList for this WebView. This contains the 2126 * back/forward list for use in querying each item in the history stack. 2127 * This is a copy of the private WebBackForwardList so it contains only a 2128 * snapshot of the current state. Multiple calls to this method may return 2129 * different objects. The object returned from this method will not be 2130 * updated to reflect any new state. 2131 */ 2132 public WebBackForwardList copyBackForwardList() { 2133 return mCallbackProxy.getBackForwardList().clone(); 2134 } 2135 2136 /* 2137 * Highlight and scroll to the next occurance of String in findAll. 2138 * Wraps the page infinitely, and scrolls. Must be called after 2139 * calling findAll. 2140 * 2141 * @param forward Direction to search. 2142 */ 2143 public void findNext(boolean forward) { 2144 nativeFindNext(forward); 2145 } 2146 2147 /* 2148 * Find all instances of find on the page and highlight them. 2149 * @param find String to find. 2150 * @return int The number of occurances of the String "find" 2151 * that were found. 2152 */ 2153 public int findAll(String find) { 2154 mFindIsUp = true; 2155 int result = nativeFindAll(find.toLowerCase(), find.toUpperCase()); 2156 invalidate(); 2157 return result; 2158 } 2159 2160 // Used to know whether the find dialog is open. Affects whether 2161 // or not we draw the highlights for matches. 2162 private boolean mFindIsUp; 2163 2164 /** 2165 * Return the first substring consisting of the address of a physical 2166 * location. Currently, only addresses in the United States are detected, 2167 * and consist of: 2168 * - a house number 2169 * - a street name 2170 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2171 * - a city name 2172 * - a state or territory, either spelled out or two-letter abbr. 2173 * - an optional 5 digit or 9 digit zip code. 2174 * 2175 * All names must be correctly capitalized, and the zip code, if present, 2176 * must be valid for the state. The street type must be a standard USPS 2177 * spelling or abbreviation. The state or territory must also be spelled 2178 * or abbreviated using USPS standards. The house number may not exceed 2179 * five digits. 2180 * @param addr The string to search for addresses. 2181 * 2182 * @return the address, or if no address is found, return null. 2183 */ 2184 public static String findAddress(String addr) { 2185 return findAddress(addr, false); 2186 } 2187 2188 /** 2189 * @hide 2190 * Return the first substring consisting of the address of a physical 2191 * location. Currently, only addresses in the United States are detected, 2192 * and consist of: 2193 * - a house number 2194 * - a street name 2195 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2196 * - a city name 2197 * - a state or territory, either spelled out or two-letter abbr. 2198 * - an optional 5 digit or 9 digit zip code. 2199 * 2200 * Names are optionally capitalized, and the zip code, if present, 2201 * must be valid for the state. The street type must be a standard USPS 2202 * spelling or abbreviation. The state or territory must also be spelled 2203 * or abbreviated using USPS standards. The house number may not exceed 2204 * five digits. 2205 * @param addr The string to search for addresses. 2206 * @param caseInsensitive addr Set to true to make search ignore case. 2207 * 2208 * @return the address, or if no address is found, return null. 2209 */ 2210 public static String findAddress(String addr, boolean caseInsensitive) { 2211 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2212 } 2213 2214 /* 2215 * Clear the highlighting surrounding text matches created by findAll. 2216 */ 2217 public void clearMatches() { 2218 mFindIsUp = false; 2219 nativeSetFindIsDown(); 2220 // Now that the dialog has been removed, ensure that we scroll to a 2221 // location that is not beyond the end of the page. 2222 pinScrollTo(mScrollX, mScrollY, false, 0); 2223 invalidate(); 2224 } 2225 2226 /** 2227 * Query the document to see if it contains any image references. The 2228 * message object will be dispatched with arg1 being set to 1 if images 2229 * were found and 0 if the document does not reference any images. 2230 * @param response The message that will be dispatched with the result. 2231 */ 2232 public void documentHasImages(Message response) { 2233 if (response == null) { 2234 return; 2235 } 2236 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2237 } 2238 2239 @Override 2240 public void computeScroll() { 2241 if (mScroller.computeScrollOffset()) { 2242 int oldX = mScrollX; 2243 int oldY = mScrollY; 2244 mScrollX = mScroller.getCurrX(); 2245 mScrollY = mScroller.getCurrY(); 2246 postInvalidate(); // So we draw again 2247 if (oldX != mScrollX || oldY != mScrollY) { 2248 // as onScrollChanged() is not called, sendOurVisibleRect() 2249 // needs to be call explicitly 2250 sendOurVisibleRect(); 2251 } 2252 } else { 2253 super.computeScroll(); 2254 } 2255 } 2256 2257 private static int computeDuration(int dx, int dy) { 2258 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2259 int duration = distance * 1000 / STD_SPEED; 2260 return Math.min(duration, MAX_DURATION); 2261 } 2262 2263 // helper to pin the scrollBy parameters (already in view coordinates) 2264 // returns true if the scroll was changed 2265 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2266 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2267 } 2268 2269 // helper to pin the scrollTo parameters (already in view coordinates) 2270 // returns true if the scroll was changed 2271 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2272 x = pinLocX(x); 2273 y = pinLocY(y); 2274 int dx = x - mScrollX; 2275 int dy = y - mScrollY; 2276 2277 if ((dx | dy) == 0) { 2278 return false; 2279 } 2280 2281 if (true && animate) { 2282 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2283 2284 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2285 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2286 invalidate(); 2287 } else { 2288 mScroller.abortAnimation(); // just in case 2289 scrollTo(x, y); 2290 } 2291 return true; 2292 } 2293 2294 // Scale from content to view coordinates, and pin. 2295 // Also called by jni webview.cpp 2296 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2297 if (mDrawHistory) { 2298 // disallow WebView to change the scroll position as History Picture 2299 // is used in the view system. 2300 // TODO: as we switchOutDrawHistory when trackball or navigation 2301 // keys are hit, this should be safe. Right? 2302 return false; 2303 } 2304 cx = contentToView(cx); 2305 cy = contentToView(cy); 2306 if (mHeightCanMeasure) { 2307 // move our visible rect according to scroll request 2308 if (cy != 0) { 2309 Rect tempRect = new Rect(); 2310 calcOurVisibleRect(tempRect); 2311 tempRect.offset(cx, cy); 2312 requestRectangleOnScreen(tempRect); 2313 } 2314 // FIXME: We scroll horizontally no matter what because currently 2315 // ScrollView and ListView will not scroll horizontally. 2316 // FIXME: Why do we only scroll horizontally if there is no 2317 // vertical scroll? 2318// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2319 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2320 } else { 2321 return pinScrollBy(cx, cy, animate, 0); 2322 } 2323 } 2324 2325 // scale from content to view coordinates, and pin 2326 // return true if pin caused the final x/y different than the request cx/cy; 2327 // return false if the view scroll to the exact position as it is requested. 2328 private boolean setContentScrollTo(int cx, int cy) { 2329 if (mDrawHistory) { 2330 // disallow WebView to change the scroll position as History Picture 2331 // is used in the view system. 2332 // One known case where this is called is that WebCore tries to 2333 // restore the scroll position. As history Picture already uses the 2334 // saved scroll position, it is ok to skip this. 2335 return false; 2336 } 2337 int vx = contentToView(cx); 2338 int vy = contentToView(cy); 2339// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2340// vx + " " + vy + "]"); 2341 pinScrollTo(vx, vy, false, 0); 2342 if (mScrollX != vx || mScrollY != vy) { 2343 return true; 2344 } else { 2345 return false; 2346 } 2347 } 2348 2349 // scale from content to view coordinates, and pin 2350 private void spawnContentScrollTo(int cx, int cy) { 2351 if (mDrawHistory) { 2352 // disallow WebView to change the scroll position as History Picture 2353 // is used in the view system. 2354 return; 2355 } 2356 int vx = contentToView(cx); 2357 int vy = contentToView(cy); 2358 pinScrollTo(vx, vy, true, 0); 2359 } 2360 2361 /** 2362 * These are from webkit, and are in content coordinate system (unzoomed) 2363 */ 2364 private void contentSizeChanged(boolean updateLayout) { 2365 // suppress 0,0 since we usually see real dimensions soon after 2366 // this avoids drawing the prev content in a funny place. If we find a 2367 // way to consolidate these notifications, this check may become 2368 // obsolete 2369 if ((mContentWidth | mContentHeight) == 0) { 2370 return; 2371 } 2372 2373 if (mHeightCanMeasure) { 2374 if (getMeasuredHeight() != contentToView(mContentHeight) 2375 && updateLayout) { 2376 requestLayout(); 2377 } 2378 } else if (mWidthCanMeasure) { 2379 if (getMeasuredWidth() != contentToView(mContentWidth) 2380 && updateLayout) { 2381 requestLayout(); 2382 } 2383 } else { 2384 // If we don't request a layout, try to send our view size to the 2385 // native side to ensure that WebCore has the correct dimensions. 2386 sendViewSizeZoom(); 2387 } 2388 } 2389 2390 /** 2391 * Set the WebViewClient that will receive various notifications and 2392 * requests. This will replace the current handler. 2393 * @param client An implementation of WebViewClient. 2394 */ 2395 public void setWebViewClient(WebViewClient client) { 2396 mCallbackProxy.setWebViewClient(client); 2397 } 2398 2399 /** 2400 * Register the interface to be used when content can not be handled by 2401 * the rendering engine, and should be downloaded instead. This will replace 2402 * the current handler. 2403 * @param listener An implementation of DownloadListener. 2404 */ 2405 public void setDownloadListener(DownloadListener listener) { 2406 mCallbackProxy.setDownloadListener(listener); 2407 } 2408 2409 /** 2410 * Set the chrome handler. This is an implementation of WebChromeClient for 2411 * use in handling Javascript dialogs, favicons, titles, and the progress. 2412 * This will replace the current handler. 2413 * @param client An implementation of WebChromeClient. 2414 */ 2415 public void setWebChromeClient(WebChromeClient client) { 2416 mCallbackProxy.setWebChromeClient(client); 2417 } 2418 2419 /** 2420 * Gets the chrome handler. 2421 * @return the current WebChromeClient instance. 2422 * 2423 * @hide API council approval. 2424 */ 2425 public WebChromeClient getWebChromeClient() { 2426 return mCallbackProxy.getWebChromeClient(); 2427 } 2428 2429 /** 2430 * Set the Picture listener. This is an interface used to receive 2431 * notifications of a new Picture. 2432 * @param listener An implementation of WebView.PictureListener. 2433 */ 2434 public void setPictureListener(PictureListener listener) { 2435 mPictureListener = listener; 2436 } 2437 2438 /** 2439 * {@hide} 2440 */ 2441 /* FIXME: Debug only! Remove for SDK! */ 2442 public void externalRepresentation(Message callback) { 2443 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2444 } 2445 2446 /** 2447 * {@hide} 2448 */ 2449 /* FIXME: Debug only! Remove for SDK! */ 2450 public void documentAsText(Message callback) { 2451 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2452 } 2453 2454 /** 2455 * Use this function to bind an object to Javascript so that the 2456 * methods can be accessed from Javascript. 2457 * <p><strong>IMPORTANT:</strong> 2458 * <ul> 2459 * <li> Using addJavascriptInterface() allows JavaScript to control your 2460 * application. This can be a very useful feature or a dangerous security 2461 * issue. When the HTML in the WebView is untrustworthy (for example, part 2462 * or all of the HTML is provided by some person or process), then an 2463 * attacker could inject HTML that will execute your code and possibly any 2464 * code of the attacker's choosing.<br> 2465 * Do not use addJavascriptInterface() unless all of the HTML in this 2466 * WebView was written by you.</li> 2467 * <li> The Java object that is bound runs in another thread and not in 2468 * the thread that it was constructed in.</li> 2469 * </ul></p> 2470 * @param obj The class instance to bind to Javascript 2471 * @param interfaceName The name to used to expose the class in Javascript 2472 */ 2473 public void addJavascriptInterface(Object obj, String interfaceName) { 2474 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2475 arg.mObject = obj; 2476 arg.mInterfaceName = interfaceName; 2477 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2478 } 2479 2480 /** 2481 * Return the WebSettings object used to control the settings for this 2482 * WebView. 2483 * @return A WebSettings object that can be used to control this WebView's 2484 * settings. 2485 */ 2486 public WebSettings getSettings() { 2487 return mWebViewCore.getSettings(); 2488 } 2489 2490 /** 2491 * Return the list of currently loaded plugins. 2492 * @return The list of currently loaded plugins. 2493 * 2494 * @deprecated This was used for Gears, which has been deprecated. 2495 */ 2496 @Deprecated 2497 public static synchronized PluginList getPluginList() { 2498 return null; 2499 } 2500 2501 /** 2502 * @deprecated This was used for Gears, which has been deprecated. 2503 */ 2504 @Deprecated 2505 public void refreshPlugins(boolean reloadOpenPages) { } 2506 2507 //------------------------------------------------------------------------- 2508 // Override View methods 2509 //------------------------------------------------------------------------- 2510 2511 @Override 2512 protected void finalize() throws Throwable { 2513 try { 2514 destroy(); 2515 } finally { 2516 super.finalize(); 2517 } 2518 } 2519 2520 @Override 2521 protected void onDraw(Canvas canvas) { 2522 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 2523 if (mNativeClass == 0) { 2524 return; 2525 } 2526 if (mWebViewCore.mEndScaleZoom) { 2527 mWebViewCore.mEndScaleZoom = false; 2528 if (mTouchMode >= FIRST_SCROLL_ZOOM 2529 && mTouchMode <= LAST_SCROLL_ZOOM) { 2530 setHorizontalScrollBarEnabled(true); 2531 setVerticalScrollBarEnabled(true); 2532 mTouchMode = TOUCH_DONE_MODE; 2533 } 2534 } 2535 int sc = canvas.save(); 2536 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 2537 scrollZoomDraw(canvas); 2538 } else { 2539 // Update the buttons in the picture, so when we draw the picture 2540 // to the screen, they are in the correct state. 2541 // Tell the native side if user is a) touching the screen, 2542 // b) pressing the trackball down, or c) pressing the enter key 2543 // If the cursor is on a button, we need to draw it in the pressed 2544 // state. 2545 // If mNativeClass is 0, we should not reach here, so we do not 2546 // need to check it again. 2547 nativeRecordButtons(hasFocus() && hasWindowFocus(), 2548 mTouchMode == TOUCH_SHORTPRESS_START_MODE 2549 || mTrackballDown || mGotCenterDown, false); 2550 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 2551 } 2552 canvas.restoreToCount(sc); 2553 2554 if (AUTO_REDRAW_HACK && mAutoRedraw) { 2555 invalidate(); 2556 } 2557 } 2558 2559 @Override 2560 public void setLayoutParams(ViewGroup.LayoutParams params) { 2561 if (params.height == LayoutParams.WRAP_CONTENT) { 2562 mWrapContent = true; 2563 } 2564 super.setLayoutParams(params); 2565 } 2566 2567 @Override 2568 public boolean performLongClick() { 2569 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 2570 // Send the click so that the textfield is in focus 2571 // FIXME: When we start respecting changes to the native textfield's 2572 // selection, need to make sure that this does not change it. 2573 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 2574 nativeCursorNodePointer()); 2575 rebuildWebTextView(); 2576 } 2577 if (inEditingMode()) { 2578 return mWebTextView.performLongClick(); 2579 } else { 2580 return super.performLongClick(); 2581 } 2582 } 2583 2584 private void drawCoreAndCursorRing(Canvas canvas, int color, 2585 boolean drawCursorRing) { 2586 if (mDrawHistory) { 2587 canvas.scale(mActualScale, mActualScale); 2588 canvas.drawPicture(mHistoryPicture); 2589 return; 2590 } 2591 2592 boolean animateZoom = mZoomScale != 0; 2593 boolean animateScroll = !mScroller.isFinished() 2594 || mVelocityTracker != null; 2595 if (animateZoom) { 2596 float zoomScale; 2597 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 2598 if (interval < ZOOM_ANIMATION_LENGTH) { 2599 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 2600 zoomScale = 1.0f / (mInvInitialZoomScale 2601 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 2602 invalidate(); 2603 } else { 2604 zoomScale = mZoomScale; 2605 // set mZoomScale to be 0 as we have done animation 2606 mZoomScale = 0; 2607 } 2608 float scale = zoomScale * mInvInitialZoomScale; 2609 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 2610 - mZoomCenterX); 2611 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 2612 * zoomScale)) + mScrollX; 2613 int ty = Math.round(scale * (mInitialScrollY + mZoomCenterY) 2614 - mZoomCenterY); 2615 ty = -pinLoc(ty, getViewHeight(), Math.round(mContentHeight 2616 * zoomScale)) + mScrollY; 2617 canvas.translate(tx, ty); 2618 canvas.scale(zoomScale, zoomScale); 2619 } else { 2620 canvas.scale(mActualScale, mActualScale); 2621 } 2622 2623 mWebViewCore.drawContentPicture(canvas, color, animateZoom, 2624 animateScroll); 2625 2626 if (mNativeClass == 0) return; 2627 if (mShiftIsPressed) { 2628 if (mTouchSelection) { 2629 nativeDrawSelectionRegion(canvas); 2630 } else { 2631 nativeDrawSelection(canvas, mSelectX, mSelectY, 2632 mExtendSelection); 2633 } 2634 } else if (drawCursorRing) { 2635 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 2636 mTouchMode = TOUCH_SHORTPRESS_MODE; 2637 HitTestResult hitTest = getHitTestResult(); 2638 if (hitTest != null && 2639 hitTest.mType != HitTestResult.UNKNOWN_TYPE) { 2640 mPrivateHandler.sendMessageDelayed(mPrivateHandler 2641 .obtainMessage(SWITCH_TO_LONGPRESS), 2642 LONG_PRESS_TIMEOUT); 2643 } 2644 } 2645 nativeDrawCursorRing(canvas); 2646 } 2647 // When the FindDialog is up, only draw the matches if we are not in 2648 // the process of scrolling them into view. 2649 if (mFindIsUp && !animateScroll) { 2650 nativeDrawMatches(canvas); 2651 } 2652 } 2653 2654 private float scrollZoomGridScale(float invScale) { 2655 float griddedInvScale = (int) (invScale * SCROLL_ZOOM_GRID) 2656 / (float) SCROLL_ZOOM_GRID; 2657 return 1.0f / griddedInvScale; 2658 } 2659 2660 private float scrollZoomX(float scale) { 2661 int width = getViewWidth(); 2662 float maxScrollZoomX = mContentWidth * scale - width; 2663 int maxX = mContentWidth - width; 2664 return -(maxScrollZoomX > 0 ? mZoomScrollX * maxScrollZoomX / maxX 2665 : maxScrollZoomX / 2); 2666 } 2667 2668 private float scrollZoomY(float scale) { 2669 int height = getViewHeight(); 2670 float maxScrollZoomY = mContentHeight * scale - height; 2671 int maxY = mContentHeight - height; 2672 return -(maxScrollZoomY > 0 ? mZoomScrollY * maxScrollZoomY / maxY 2673 : maxScrollZoomY / 2); 2674 } 2675 2676 private void drawMagnifyFrame(Canvas canvas, Rect frame, Paint paint) { 2677 final float ADORNMENT_LEN = 16.0f; 2678 float width = frame.width(); 2679 float height = frame.height(); 2680 Path path = new Path(); 2681 path.moveTo(-ADORNMENT_LEN, -ADORNMENT_LEN); 2682 path.lineTo(0, 0); 2683 path.lineTo(width, 0); 2684 path.lineTo(width + ADORNMENT_LEN, -ADORNMENT_LEN); 2685 path.moveTo(-ADORNMENT_LEN, height + ADORNMENT_LEN); 2686 path.lineTo(0, height); 2687 path.lineTo(width, height); 2688 path.lineTo(width + ADORNMENT_LEN, height + ADORNMENT_LEN); 2689 path.moveTo(0, 0); 2690 path.lineTo(0, height); 2691 path.moveTo(width, 0); 2692 path.lineTo(width, height); 2693 path.offset(frame.left, frame.top); 2694 canvas.drawPath(path, paint); 2695 } 2696 2697 // Returns frame surrounding magified portion of screen while 2698 // scroll-zoom is enabled. The frame is also used to center the 2699 // zoom-in zoom-out points at the start and end of the animation. 2700 private Rect scrollZoomFrame(int width, int height, float halfScale) { 2701 Rect scrollFrame = new Rect(); 2702 scrollFrame.set(mZoomScrollX, mZoomScrollY, 2703 mZoomScrollX + width, mZoomScrollY + height); 2704 if (mContentWidth * mZoomScrollLimit < width) { 2705 float scale = zoomFrameScaleX(width, halfScale, 1.0f); 2706 float offsetX = (width * scale - width) * 0.5f; 2707 scrollFrame.left -= offsetX; 2708 scrollFrame.right += offsetX; 2709 } 2710 if (mContentHeight * mZoomScrollLimit < height) { 2711 float scale = zoomFrameScaleY(height, halfScale, 1.0f); 2712 float offsetY = (height * scale - height) * 0.5f; 2713 scrollFrame.top -= offsetY; 2714 scrollFrame.bottom += offsetY; 2715 } 2716 return scrollFrame; 2717 } 2718 2719 private float zoomFrameScaleX(int width, float halfScale, float noScale) { 2720 // mContentWidth > width > mContentWidth * mZoomScrollLimit 2721 if (mContentWidth <= width) { 2722 return halfScale; 2723 } 2724 float part = (width - mContentWidth * mZoomScrollLimit) 2725 / (width * (1 - mZoomScrollLimit)); 2726 return halfScale * part + noScale * (1.0f - part); 2727 } 2728 2729 private float zoomFrameScaleY(int height, float halfScale, float noScale) { 2730 if (mContentHeight <= height) { 2731 return halfScale; 2732 } 2733 float part = (height - mContentHeight * mZoomScrollLimit) 2734 / (height * (1 - mZoomScrollLimit)); 2735 return halfScale * part + noScale * (1.0f - part); 2736 } 2737 2738 private float scrollZoomMagScale(float invScale) { 2739 return (invScale * 2 + mInvActualScale) / 3; 2740 } 2741 2742 private void scrollZoomDraw(Canvas canvas) { 2743 float invScale = mZoomScrollInvLimit; 2744 int elapsed = 0; 2745 if (mTouchMode != SCROLL_ZOOM_OUT) { 2746 elapsed = (int) Math.min(System.currentTimeMillis() 2747 - mZoomScrollStart, SCROLL_ZOOM_DURATION); 2748 float transitionScale = (mZoomScrollInvLimit - mInvActualScale) 2749 * elapsed / SCROLL_ZOOM_DURATION; 2750 if (mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 2751 invScale = mInvActualScale + transitionScale; 2752 } else { /* if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) */ 2753 invScale = mZoomScrollInvLimit - transitionScale; 2754 } 2755 } 2756 float scale = scrollZoomGridScale(invScale); 2757 invScale = 1.0f / scale; 2758 int width = getViewWidth(); 2759 int height = getViewHeight(); 2760 float halfScale = scrollZoomMagScale(invScale); 2761 Rect scrollFrame = scrollZoomFrame(width, height, halfScale); 2762 if (elapsed == SCROLL_ZOOM_DURATION) { 2763 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 2764 setHorizontalScrollBarEnabled(true); 2765 setVerticalScrollBarEnabled(true); 2766 rebuildWebTextView(); 2767 scrollTo((int) (scrollFrame.centerX() * mActualScale) 2768 - (width >> 1), (int) (scrollFrame.centerY() 2769 * mActualScale) - (height >> 1)); 2770 mTouchMode = TOUCH_DONE_MODE; 2771 // Show all the child views once we are done. 2772 mViewManager.showAll(); 2773 } else { 2774 mTouchMode = SCROLL_ZOOM_OUT; 2775 } 2776 } 2777 float newX = scrollZoomX(scale); 2778 float newY = scrollZoomY(scale); 2779 if (DebugFlags.WEB_VIEW) { 2780 Log.v(LOGTAG, "scrollZoomDraw scale=" + scale + " + (" + newX 2781 + ", " + newY + ") mZoomScroll=(" + mZoomScrollX + ", " 2782 + mZoomScrollY + ")" + " invScale=" + invScale + " scale=" 2783 + scale); 2784 } 2785 canvas.translate(newX, newY); 2786 canvas.scale(scale, scale); 2787 boolean animating = mTouchMode != SCROLL_ZOOM_OUT; 2788 if (mDrawHistory) { 2789 int sc = canvas.save(Canvas.CLIP_SAVE_FLAG); 2790 Rect clip = new Rect(0, 0, mHistoryPicture.getWidth(), 2791 mHistoryPicture.getHeight()); 2792 canvas.clipRect(clip, Region.Op.DIFFERENCE); 2793 canvas.drawColor(mBackgroundColor); 2794 canvas.restoreToCount(sc); 2795 canvas.drawPicture(mHistoryPicture); 2796 } else { 2797 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2798 animating, true); 2799 } 2800 if (mTouchMode == TOUCH_DONE_MODE) { 2801 return; 2802 } 2803 Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG); 2804 paint.setStyle(Paint.Style.STROKE); 2805 paint.setStrokeWidth(30.0f); 2806 paint.setARGB(0x50, 0, 0, 0); 2807 int maxX = mContentWidth - width; 2808 int maxY = mContentHeight - height; 2809 if (true) { // experiment: draw hint to place finger off magnify area 2810 drawMagnifyFrame(canvas, scrollFrame, paint); 2811 } else { 2812 canvas.drawRect(scrollFrame, paint); 2813 } 2814 int sc = canvas.save(); 2815 canvas.clipRect(scrollFrame); 2816 float halfX = (float) mZoomScrollX / maxX; 2817 if (mContentWidth * mZoomScrollLimit < width) { 2818 halfX = zoomFrameScaleX(width, 0.5f, halfX); 2819 } 2820 float halfY = (float) mZoomScrollY / maxY; 2821 if (mContentHeight * mZoomScrollLimit < height) { 2822 halfY = zoomFrameScaleY(height, 0.5f, halfY); 2823 } 2824 canvas.scale(halfScale, halfScale, mZoomScrollX + width * halfX 2825 , mZoomScrollY + height * halfY); 2826 if (DebugFlags.WEB_VIEW) { 2827 Log.v(LOGTAG, "scrollZoomDraw halfScale=" + halfScale + " w/h=(" 2828 + width + ", " + height + ") half=(" + halfX + ", " 2829 + halfY + ")"); 2830 } 2831 if (mDrawHistory) { 2832 canvas.drawPicture(mHistoryPicture); 2833 } else { 2834 mWebViewCore.drawContentPicture(canvas, mBackgroundColor, 2835 animating, false); 2836 } 2837 canvas.restoreToCount(sc); 2838 if (mTouchMode != SCROLL_ZOOM_OUT) { 2839 invalidate(); 2840 } 2841 } 2842 2843 private void zoomScrollTap(float x, float y) { 2844 float scale = scrollZoomGridScale(mZoomScrollInvLimit); 2845 float left = scrollZoomX(scale); 2846 float top = scrollZoomY(scale); 2847 int width = getViewWidth(); 2848 int height = getViewHeight(); 2849 x -= width * scale / 2; 2850 y -= height * scale / 2; 2851 mZoomScrollX = Math.min(mContentWidth - width 2852 , Math.max(0, (int) ((x - left) / scale))); 2853 mZoomScrollY = Math.min(mContentHeight - height 2854 , Math.max(0, (int) ((y - top) / scale))); 2855 if (DebugFlags.WEB_VIEW) { 2856 Log.v(LOGTAG, "zoomScrollTap scale=" + scale + " + (" + left 2857 + ", " + top + ") mZoomScroll=(" + mZoomScrollX + ", " 2858 + mZoomScrollY + ")" + " x=" + x + " y=" + y); 2859 } 2860 } 2861 2862 /** 2863 * @hide 2864 */ 2865 public boolean canZoomScrollOut() { 2866 if (mContentWidth == 0 || mContentHeight == 0) { 2867 return false; 2868 } 2869 int width = getViewWidth(); 2870 int height = getViewHeight(); 2871 float x = (float) width / (float) mContentWidth; 2872 float y = (float) height / (float) mContentHeight; 2873 mZoomScrollLimit = Math.max(DEFAULT_MIN_ZOOM_SCALE, Math.min(x, y)); 2874 mZoomScrollInvLimit = 1.0f / mZoomScrollLimit; 2875 if (DebugFlags.WEB_VIEW) { 2876 Log.v(LOGTAG, "canZoomScrollOut" 2877 + " mInvActualScale=" + mInvActualScale 2878 + " mZoomScrollLimit=" + mZoomScrollLimit 2879 + " mZoomScrollInvLimit=" + mZoomScrollInvLimit 2880 + " mContentWidth=" + mContentWidth 2881 + " mContentHeight=" + mContentHeight 2882 ); 2883 } 2884 // don't zoom out unless magnify area is at least half as wide 2885 // or tall as content 2886 float limit = mZoomScrollLimit * 2; 2887 return mContentWidth >= width * limit 2888 || mContentHeight >= height * limit; 2889 } 2890 2891 private void startZoomScrollOut() { 2892 setHorizontalScrollBarEnabled(false); 2893 setVerticalScrollBarEnabled(false); 2894 if (getSettings().getBuiltInZoomControls()) { 2895 if (mZoomButtonsController.isVisible()) { 2896 mZoomButtonsController.setVisible(false); 2897 } 2898 } else { 2899 if (mZoomControlRunnable != null) { 2900 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 2901 } 2902 if (mZoomControls != null) { 2903 mZoomControls.hide(); 2904 } 2905 } 2906 int width = getViewWidth(); 2907 int height = getViewHeight(); 2908 int halfW = width >> 1; 2909 mLastTouchX = halfW; 2910 int halfH = height >> 1; 2911 mLastTouchY = halfH; 2912 mScroller.abortAnimation(); 2913 mZoomScrollStart = System.currentTimeMillis(); 2914 Rect zoomFrame = scrollZoomFrame(width, height 2915 , scrollZoomMagScale(mZoomScrollInvLimit)); 2916 mZoomScrollX = Math.max(0, (int) ((mScrollX + halfW) * mInvActualScale) 2917 - (zoomFrame.width() >> 1)); 2918 mZoomScrollY = Math.max(0, (int) ((mScrollY + halfH) * mInvActualScale) 2919 - (zoomFrame.height() >> 1)); 2920 scrollTo(0, 0); // triggers inval, starts animation 2921 clearTextEntry(); 2922 if (DebugFlags.WEB_VIEW) { 2923 Log.v(LOGTAG, "startZoomScrollOut mZoomScroll=(" 2924 + mZoomScrollX + ", " + mZoomScrollY +")"); 2925 } 2926 } 2927 2928 /** 2929 * @hide 2930 */ 2931 public void zoomScrollOut() { 2932 if (canZoomScrollOut() == false) { 2933 mTouchMode = TOUCH_DONE_MODE; 2934 return; 2935 } 2936 // Hide the child views while in this mode. 2937 mViewManager.hideAll(); 2938 startZoomScrollOut(); 2939 mTouchMode = SCROLL_ZOOM_ANIMATION_OUT; 2940 invalidate(); 2941 } 2942 2943 private void moveZoomScrollWindow(float x, float y) { 2944 if (Math.abs(x - mLastZoomScrollRawX) < 1.5f 2945 && Math.abs(y - mLastZoomScrollRawY) < 1.5f) { 2946 return; 2947 } 2948 mLastZoomScrollRawX = x; 2949 mLastZoomScrollRawY = y; 2950 int oldX = mZoomScrollX; 2951 int oldY = mZoomScrollY; 2952 int width = getViewWidth(); 2953 int height = getViewHeight(); 2954 int maxZoomX = mContentWidth - width; 2955 if (maxZoomX > 0) { 2956 int maxScreenX = width - (int) Math.ceil(width 2957 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 2958 if (DebugFlags.WEB_VIEW) { 2959 Log.v(LOGTAG, "moveZoomScrollWindow-X" 2960 + " maxScreenX=" + maxScreenX + " width=" + width 2961 + " mZoomScrollLimit=" + mZoomScrollLimit + " x=" + x); 2962 } 2963 x += maxScreenX * mLastScrollX / maxZoomX - mLastTouchX; 2964 x *= Math.max(maxZoomX / maxScreenX, mZoomScrollInvLimit); 2965 mZoomScrollX = Math.max(0, Math.min(maxZoomX, (int) x)); 2966 } 2967 int maxZoomY = mContentHeight - height; 2968 if (maxZoomY > 0) { 2969 int maxScreenY = height - (int) Math.ceil(height 2970 * mZoomScrollLimit) - SCROLL_ZOOM_FINGER_BUFFER; 2971 if (DebugFlags.WEB_VIEW) { 2972 Log.v(LOGTAG, "moveZoomScrollWindow-Y" 2973 + " maxScreenY=" + maxScreenY + " height=" + height 2974 + " mZoomScrollLimit=" + mZoomScrollLimit + " y=" + y); 2975 } 2976 y += maxScreenY * mLastScrollY / maxZoomY - mLastTouchY; 2977 y *= Math.max(maxZoomY / maxScreenY, mZoomScrollInvLimit); 2978 mZoomScrollY = Math.max(0, Math.min(maxZoomY, (int) y)); 2979 } 2980 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 2981 invalidate(); 2982 } 2983 if (DebugFlags.WEB_VIEW) { 2984 Log.v(LOGTAG, "moveZoomScrollWindow" 2985 + " scrollTo=(" + mZoomScrollX + ", " + mZoomScrollY + ")" 2986 + " mLastTouch=(" + mLastTouchX + ", " + mLastTouchY + ")" 2987 + " maxZoom=(" + maxZoomX + ", " + maxZoomY + ")" 2988 + " last=("+mLastScrollX+", "+mLastScrollY+")" 2989 + " x=" + x + " y=" + y); 2990 } 2991 } 2992 2993 private void setZoomScrollIn() { 2994 mZoomScrollStart = System.currentTimeMillis(); 2995 } 2996 2997 private float mZoomScrollLimit; 2998 private float mZoomScrollInvLimit; 2999 private int mLastScrollX; 3000 private int mLastScrollY; 3001 private long mZoomScrollStart; 3002 private int mZoomScrollX; 3003 private int mZoomScrollY; 3004 private float mLastZoomScrollRawX = -1000.0f; 3005 private float mLastZoomScrollRawY = -1000.0f; 3006 // The zoomed scale varies from 1.0 to DEFAULT_MIN_ZOOM_SCALE == 0.25. 3007 // The zoom animation duration SCROLL_ZOOM_DURATION == 0.5. 3008 // Two pressures compete for gridding; a high frame rate (e.g. 20 fps) 3009 // and minimizing font cache allocations (fewer frames is better). 3010 // A SCROLL_ZOOM_GRID of 6 permits about 20 zoom levels over 0.5 seconds: 3011 // the inverse of: 1.0, 1.16, 1.33, 1.5, 1.67, 1.84, 2.0, etc. to 4.0 3012 private static final int SCROLL_ZOOM_GRID = 6; 3013 private static final int SCROLL_ZOOM_DURATION = 500; 3014 // Make it easier to get to the bottom of a document by reserving a 32 3015 // pixel buffer, for when the starting drag is a bit below the bottom of 3016 // the magnify frame. 3017 private static final int SCROLL_ZOOM_FINGER_BUFFER = 32; 3018 3019 // draw history 3020 private boolean mDrawHistory = false; 3021 private Picture mHistoryPicture = null; 3022 private int mHistoryWidth = 0; 3023 private int mHistoryHeight = 0; 3024 3025 // Only check the flag, can be called from WebCore thread 3026 boolean drawHistory() { 3027 return mDrawHistory; 3028 } 3029 3030 // Should only be called in UI thread 3031 void switchOutDrawHistory() { 3032 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3033 if (mDrawHistory && mWebViewCore.pictureReady()) { 3034 mDrawHistory = false; 3035 invalidate(); 3036 int oldScrollX = mScrollX; 3037 int oldScrollY = mScrollY; 3038 mScrollX = pinLocX(mScrollX); 3039 mScrollY = pinLocY(mScrollY); 3040 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3041 mUserScroll = false; 3042 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3043 oldScrollY); 3044 } 3045 sendOurVisibleRect(); 3046 } 3047 } 3048 3049 WebViewCore.CursorData cursorData() { 3050 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3051 result.mMoveGeneration = nativeMoveGeneration(); 3052 result.mFrame = nativeCursorFramePointer(); 3053 Point position = nativeCursorPosition(); 3054 result.mX = position.x; 3055 result.mY = position.y; 3056 return result; 3057 } 3058 3059 /** 3060 * Delete text from start to end in the focused textfield. If there is no 3061 * focus, or if start == end, silently fail. If start and end are out of 3062 * order, swap them. 3063 * @param start Beginning of selection to delete. 3064 * @param end End of selection to delete. 3065 */ 3066 /* package */ void deleteSelection(int start, int end) { 3067 mTextGeneration++; 3068 WebViewCore.TextSelectionData data 3069 = new WebViewCore.TextSelectionData(start, end); 3070 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3071 data); 3072 } 3073 3074 /** 3075 * Set the selection to (start, end) in the focused textfield. If start and 3076 * end are out of order, swap them. 3077 * @param start Beginning of selection. 3078 * @param end End of selection. 3079 */ 3080 /* package */ void setSelection(int start, int end) { 3081 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3082 } 3083 3084 // Called by JNI when a touch event puts a textfield into focus. 3085 private void displaySoftKeyboard(boolean isTextView) { 3086 InputMethodManager imm = (InputMethodManager) 3087 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3088 3089 if (isTextView) { 3090 imm.showSoftInput(mWebTextView, 0); 3091 // Now we need to fake a touch event to place the cursor where the 3092 // user touched. 3093 AbsoluteLayout.LayoutParams lp = (AbsoluteLayout.LayoutParams) 3094 mWebTextView.getLayoutParams(); 3095 if (lp != null) { 3096 // Take the last touch and adjust for the location of the 3097 // WebTextView. 3098 float x = mLastTouchX + (float) (mScrollX - lp.x); 3099 float y = mLastTouchY + (float) (mScrollY - lp.y); 3100 mWebTextView.fakeTouchEvent(x, y); 3101 } 3102 if (mInZoomOverview) { 3103 // if in zoom overview mode, call doDoubleTap() to bring it back 3104 // to normal mode so that user can enter text. 3105 doDoubleTap(); 3106 } 3107 } 3108 else { // used by plugins 3109 imm.showSoftInput(this, 0); 3110 } 3111 } 3112 3113 // Called by WebKit to instruct the UI to hide the keyboard 3114 private void hideSoftKeyboard() { 3115 InputMethodManager imm = (InputMethodManager) 3116 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3117 3118 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3119 } 3120 3121 /* 3122 * This method checks the current focus and cursor and potentially rebuilds 3123 * mWebTextView to have the appropriate properties, such as password, 3124 * multiline, and what text it contains. It also removes it if necessary. 3125 */ 3126 /* package */ void rebuildWebTextView() { 3127 // If the WebView does not have focus, do nothing until it gains focus. 3128 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus()) 3129 || (mTouchMode >= FIRST_SCROLL_ZOOM 3130 && mTouchMode <= LAST_SCROLL_ZOOM)) { 3131 return; 3132 } 3133 boolean alreadyThere = inEditingMode(); 3134 // inEditingMode can only return true if mWebTextView is non-null, 3135 // so we can safely call remove() if (alreadyThere) 3136 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3137 if (alreadyThere) { 3138 mWebTextView.remove(); 3139 } 3140 return; 3141 } 3142 // At this point, we know we have found an input field, so go ahead 3143 // and create the WebTextView if necessary. 3144 if (mWebTextView == null) { 3145 mWebTextView = new WebTextView(mContext, WebView.this); 3146 // Initialize our generation number. 3147 mTextGeneration = 0; 3148 } 3149 mWebTextView.setTextSize(contentToView(nativeFocusCandidateTextSize())); 3150 Rect visibleRect = new Rect(); 3151 calcOurContentVisibleRect(visibleRect); 3152 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3153 // should be in content coordinates. 3154 Rect bounds = nativeFocusCandidateNodeBounds(); 3155 if (!Rect.intersects(bounds, visibleRect)) { 3156 mWebTextView.bringIntoView(); 3157 } 3158 String text = nativeFocusCandidateText(); 3159 int nodePointer = nativeFocusCandidatePointer(); 3160 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3161 // It is possible that we have the same textfield, but it has moved, 3162 // i.e. In the case of opening/closing the screen. 3163 // In that case, we need to set the dimensions, but not the other 3164 // aspects. 3165 // We also need to restore the selection, which gets wrecked by 3166 // calling setTextEntryRect. 3167 Spannable spannable = (Spannable) mWebTextView.getText(); 3168 int start = Selection.getSelectionStart(spannable); 3169 int end = Selection.getSelectionEnd(spannable); 3170 // If the text has been changed by webkit, update it. However, if 3171 // there has been more UI text input, ignore it. We will receive 3172 // another update when that text is recognized. 3173 if (text != null && !text.equals(spannable.toString()) 3174 && nativeTextGeneration() == mTextGeneration) { 3175 mWebTextView.setTextAndKeepSelection(text); 3176 } else { 3177 Selection.setSelection(spannable, start, end); 3178 } 3179 } else { 3180 Rect vBox = contentToView(bounds); 3181 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3182 vBox.height()); 3183 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3184 Gravity.RIGHT : Gravity.NO_GRAVITY); 3185 // this needs to be called before update adapter thread starts to 3186 // ensure the mWebTextView has the same node pointer 3187 mWebTextView.setNodePointer(nodePointer); 3188 int maxLength = -1; 3189 boolean isTextField = nativeFocusCandidateIsTextField(); 3190 if (isTextField) { 3191 maxLength = nativeFocusCandidateMaxLength(); 3192 String name = nativeFocusCandidateName(); 3193 if (mWebViewCore.getSettings().getSaveFormData() 3194 && name != null) { 3195 Message update = mPrivateHandler.obtainMessage( 3196 REQUEST_FORM_DATA, nodePointer); 3197 RequestFormData updater = new RequestFormData(name, 3198 getUrl(), update); 3199 Thread t = new Thread(updater); 3200 t.start(); 3201 } 3202 } 3203 mWebTextView.setMaxLength(maxLength); 3204 AutoCompleteAdapter adapter = null; 3205 mWebTextView.setAdapterCustom(adapter); 3206 mWebTextView.setSingleLine(isTextField); 3207 mWebTextView.setInPassword(nativeFocusCandidateIsPassword()); 3208 if (null == text) { 3209 mWebTextView.setText("", 0, 0); 3210 if (DebugFlags.WEB_VIEW) { 3211 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3212 } 3213 } else { 3214 // Change to true to enable the old style behavior, where 3215 // entering a textfield/textarea always set the selection to the 3216 // whole field. This was desirable for the case where the user 3217 // intends to scroll past the field using the trackball. 3218 // However, it causes a problem when replying to emails - the 3219 // user expects the cursor to be at the beginning of the 3220 // textarea. Testing out a new behavior, where textfields set 3221 // selection at the end, and textareas at the beginning. 3222 if (false) { 3223 mWebTextView.setText(text, 0, text.length()); 3224 } else if (isTextField) { 3225 int length = text.length(); 3226 mWebTextView.setText(text, length, length); 3227 if (DebugFlags.WEB_VIEW) { 3228 Log.v(LOGTAG, "rebuildWebTextView length=" + length); 3229 } 3230 } else { 3231 mWebTextView.setText(text, 0, 0); 3232 if (DebugFlags.WEB_VIEW) { 3233 Log.v(LOGTAG, "rebuildWebTextView !isTextField"); 3234 } 3235 } 3236 } 3237 mWebTextView.requestFocus(); 3238 } 3239 } 3240 3241 /* 3242 * This class requests an Adapter for the WebTextView which shows past 3243 * entries stored in the database. It is a Runnable so that it can be done 3244 * in its own thread, without slowing down the UI. 3245 */ 3246 private class RequestFormData implements Runnable { 3247 private String mName; 3248 private String mUrl; 3249 private Message mUpdateMessage; 3250 3251 public RequestFormData(String name, String url, Message msg) { 3252 mName = name; 3253 mUrl = url; 3254 mUpdateMessage = msg; 3255 } 3256 3257 public void run() { 3258 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3259 if (pastEntries.size() > 0) { 3260 AutoCompleteAdapter adapter = new 3261 AutoCompleteAdapter(mContext, pastEntries); 3262 mUpdateMessage.obj = adapter; 3263 mUpdateMessage.sendToTarget(); 3264 } 3265 } 3266 } 3267 3268 // This is used to determine long press with the center key. Does not 3269 // affect long press with the trackball/touch. 3270 private boolean mGotCenterDown = false; 3271 3272 @Override 3273 public boolean onKeyDown(int keyCode, KeyEvent event) { 3274 if (DebugFlags.WEB_VIEW) { 3275 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3276 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3277 } 3278 3279 if (mNativeClass == 0) { 3280 return false; 3281 } 3282 3283 // do this hack up front, so it always works, regardless of touch-mode 3284 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3285 mAutoRedraw = !mAutoRedraw; 3286 if (mAutoRedraw) { 3287 invalidate(); 3288 } 3289 return true; 3290 } 3291 3292 // Bubble up the key event if 3293 // 1. it is a system key; or 3294 // 2. the host application wants to handle it; or 3295 // 3. webview is in scroll-zoom state; 3296 if (event.isSystem() 3297 || mCallbackProxy.uiOverrideKeyEvent(event) 3298 || (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM)) { 3299 return false; 3300 } 3301 3302 if (mShiftIsPressed == false && nativeCursorWantsKeyEvents() == false 3303 && (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3304 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT)) { 3305 mExtendSelection = false; 3306 mShiftIsPressed = true; 3307 if (nativeHasCursorNode()) { 3308 Rect rect = nativeCursorNodeBounds(); 3309 mSelectX = contentToView(rect.left); 3310 mSelectY = contentToView(rect.top); 3311 } else { 3312 mSelectX = mScrollX + (int) mLastTouchX; 3313 mSelectY = mScrollY + (int) mLastTouchY; 3314 } 3315 nativeHideCursor(); 3316 } 3317 3318 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3319 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3320 // always handle the navigation keys in the UI thread 3321 switchOutDrawHistory(); 3322 if (navHandledKey(keyCode, 1, false, event.getEventTime(), false)) { 3323 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3324 return true; 3325 } 3326 // Bubble up the key event as WebView doesn't handle it 3327 return false; 3328 } 3329 3330 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3331 switchOutDrawHistory(); 3332 if (event.getRepeatCount() == 0) { 3333 mGotCenterDown = true; 3334 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3335 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3336 // Already checked mNativeClass, so we do not need to check it 3337 // again. 3338 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3339 return true; 3340 } 3341 // Bubble up the key event as WebView doesn't handle it 3342 return false; 3343 } 3344 3345 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3346 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3347 // turn off copy select if a shift-key combo is pressed 3348 mExtendSelection = mShiftIsPressed = false; 3349 if (mTouchMode == TOUCH_SELECT_MODE) { 3350 mTouchMode = TOUCH_INIT_MODE; 3351 } 3352 } 3353 3354 if (getSettings().getNavDump()) { 3355 switch (keyCode) { 3356 case KeyEvent.KEYCODE_4: 3357 // "/data/data/com.android.browser/displayTree.txt" 3358 nativeDumpDisplayTree(getUrl()); 3359 break; 3360 case KeyEvent.KEYCODE_5: 3361 case KeyEvent.KEYCODE_6: 3362 // 5: dump the dom tree to the file 3363 // "/data/data/com.android.browser/domTree.txt" 3364 // 6: dump the dom tree to the adb log 3365 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, 3366 (keyCode == KeyEvent.KEYCODE_5) ? 1 : 0, 0); 3367 break; 3368 case KeyEvent.KEYCODE_7: 3369 case KeyEvent.KEYCODE_8: 3370 // 7: dump the render tree to the file 3371 // "/data/data/com.android.browser/renderTree.txt" 3372 // 8: dump the render tree to the adb log 3373 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, 3374 (keyCode == KeyEvent.KEYCODE_7) ? 1 : 0, 0); 3375 break; 3376 case KeyEvent.KEYCODE_9: 3377 nativeInstrumentReport(); 3378 return true; 3379 } 3380 } 3381 3382 if (nativeCursorIsPlugin()) { 3383 nativeUpdatePluginReceivesEvents(); 3384 invalidate(); 3385 } else if (nativeCursorIsTextInput()) { 3386 // This message will put the node in focus, for the DOM's notion 3387 // of focus, and make the focuscontroller active 3388 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3389 nativeCursorNodePointer()); 3390 // This will bring up the WebTextView and put it in focus, for 3391 // our view system's notion of focus 3392 rebuildWebTextView(); 3393 // Now we need to pass the event to it 3394 return mWebTextView.onKeyDown(keyCode, event); 3395 } else if (nativeHasFocusNode()) { 3396 // In this case, the cursor is not on a text input, but the focus 3397 // might be. Check it, and if so, hand over to the WebTextView. 3398 rebuildWebTextView(); 3399 if (inEditingMode()) { 3400 return mWebTextView.onKeyDown(keyCode, event); 3401 } 3402 } 3403 3404 // TODO: should we pass all the keys to DOM or check the meta tag 3405 if (nativeCursorWantsKeyEvents() || true) { 3406 // pass the key to DOM 3407 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3408 // return true as DOM handles the key 3409 return true; 3410 } 3411 3412 // Bubble up the key event as WebView doesn't handle it 3413 return false; 3414 } 3415 3416 @Override 3417 public boolean onKeyUp(int keyCode, KeyEvent event) { 3418 if (DebugFlags.WEB_VIEW) { 3419 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3420 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3421 } 3422 3423 if (mNativeClass == 0) { 3424 return false; 3425 } 3426 3427 // special CALL handling when cursor node's href is "tel:XXX" 3428 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3429 String text = nativeCursorText(); 3430 if (!nativeCursorIsTextInput() && text != null 3431 && text.startsWith(SCHEME_TEL)) { 3432 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3433 getContext().startActivity(intent); 3434 return true; 3435 } 3436 } 3437 3438 // Bubble up the key event if 3439 // 1. it is a system key; or 3440 // 2. the host application wants to handle it; 3441 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3442 return false; 3443 } 3444 3445 // special handling in scroll_zoom state 3446 if (mTouchMode >= FIRST_SCROLL_ZOOM && mTouchMode <= LAST_SCROLL_ZOOM) { 3447 if (KeyEvent.KEYCODE_DPAD_CENTER == keyCode 3448 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN) { 3449 setZoomScrollIn(); 3450 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 3451 invalidate(); 3452 return true; 3453 } 3454 return false; 3455 } 3456 3457 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3458 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3459 if (commitCopy()) { 3460 return true; 3461 } 3462 } 3463 3464 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3465 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3466 // always handle the navigation keys in the UI thread 3467 // Bubble up the key event as WebView doesn't handle it 3468 return false; 3469 } 3470 3471 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3472 // remove the long press message first 3473 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3474 mGotCenterDown = false; 3475 3476 if (mShiftIsPressed) { 3477 return false; 3478 } 3479 if (getSettings().supportZoom() 3480 && mTouchMode == TOUCH_DOUBLECLICK_MODE) { 3481 zoomScrollOut(); 3482 } else { 3483 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3484 .obtainMessage(SWITCH_TO_CLICK), TAP_TIMEOUT); 3485 if (DebugFlags.WEB_VIEW) { 3486 Log.v(LOGTAG, "TOUCH_DOUBLECLICK_MODE"); 3487 } 3488 mTouchMode = TOUCH_DOUBLECLICK_MODE; 3489 } 3490 return true; 3491 } 3492 3493 // TODO: should we pass all the keys to DOM or check the meta tag 3494 if (nativeCursorWantsKeyEvents() || true) { 3495 // pass the key to DOM 3496 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3497 // return true as DOM handles the key 3498 return true; 3499 } 3500 3501 // Bubble up the key event as WebView doesn't handle it 3502 return false; 3503 } 3504 3505 /** 3506 * @hide 3507 */ 3508 public void emulateShiftHeld() { 3509 mExtendSelection = false; 3510 mShiftIsPressed = true; 3511 nativeHideCursor(); 3512 } 3513 3514 private boolean commitCopy() { 3515 boolean copiedSomething = false; 3516 if (mExtendSelection) { 3517 // copy region so core operates on copy without touching orig. 3518 Region selection = new Region(nativeGetSelection()); 3519 if (selection.isEmpty() == false) { 3520 Toast.makeText(mContext 3521 , com.android.internal.R.string.text_copied 3522 , Toast.LENGTH_SHORT).show(); 3523 mWebViewCore.sendMessage(EventHub.GET_SELECTION, selection); 3524 copiedSomething = true; 3525 } 3526 mExtendSelection = false; 3527 } 3528 mShiftIsPressed = false; 3529 if (mTouchMode == TOUCH_SELECT_MODE) { 3530 mTouchMode = TOUCH_INIT_MODE; 3531 } 3532 return copiedSomething; 3533 } 3534 3535 // Set this as a hierarchy change listener so we can know when this view 3536 // is removed and still have access to our parent. 3537 @Override 3538 protected void onAttachedToWindow() { 3539 super.onAttachedToWindow(); 3540 ViewParent parent = getParent(); 3541 if (parent instanceof ViewGroup) { 3542 ViewGroup p = (ViewGroup) parent; 3543 p.setOnHierarchyChangeListener(this); 3544 } 3545 } 3546 3547 @Override 3548 protected void onDetachedFromWindow() { 3549 super.onDetachedFromWindow(); 3550 ViewParent parent = getParent(); 3551 if (parent instanceof ViewGroup) { 3552 ViewGroup p = (ViewGroup) parent; 3553 p.setOnHierarchyChangeListener(null); 3554 } 3555 3556 // Clean up the zoom controller 3557 mZoomButtonsController.setVisible(false); 3558 } 3559 3560 // Implementation for OnHierarchyChangeListener 3561 public void onChildViewAdded(View parent, View child) {} 3562 3563 public void onChildViewRemoved(View p, View child) { 3564 if (child == this) { 3565 clearTextEntry(); 3566 } 3567 } 3568 3569 /** 3570 * @deprecated WebView should not have implemented 3571 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 3572 * does nothing now. 3573 */ 3574 @Deprecated 3575 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 3576 } 3577 3578 // To avoid drawing the cursor ring, and remove the TextView when our window 3579 // loses focus. 3580 @Override 3581 public void onWindowFocusChanged(boolean hasWindowFocus) { 3582 if (hasWindowFocus) { 3583 if (hasFocus()) { 3584 // If our window regained focus, and we have focus, then begin 3585 // drawing the cursor ring 3586 mDrawCursorRing = true; 3587 if (mNativeClass != 0) { 3588 nativeRecordButtons(true, false, true); 3589 if (inEditingMode()) { 3590 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 3591 } 3592 } 3593 } else { 3594 // If our window gained focus, but we do not have it, do not 3595 // draw the cursor ring. 3596 mDrawCursorRing = false; 3597 // We do not call nativeRecordButtons here because we assume 3598 // that when we lost focus, or window focus, it got called with 3599 // false for the first parameter 3600 } 3601 } else { 3602 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 3603 /* 3604 * The zoom controls come in their own window, so our window 3605 * loses focus. Our policy is to not draw the cursor ring if 3606 * our window is not focused, but this is an exception since 3607 * the user can still navigate the web page with the zoom 3608 * controls showing. 3609 */ 3610 // If our window has lost focus, stop drawing the cursor ring 3611 mDrawCursorRing = false; 3612 } 3613 mGotKeyDown = false; 3614 mShiftIsPressed = false; 3615 if (mNativeClass != 0) { 3616 nativeRecordButtons(false, false, true); 3617 } 3618 setFocusControllerInactive(); 3619 } 3620 invalidate(); 3621 super.onWindowFocusChanged(hasWindowFocus); 3622 } 3623 3624 /* 3625 * Pass a message to WebCore Thread, telling the WebCore::Page's 3626 * FocusController to be "inactive" so that it will 3627 * not draw the blinking cursor. It gets set to "active" to draw the cursor 3628 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 3629 */ 3630 /* package */ void setFocusControllerInactive() { 3631 // Do not need to also check whether mWebViewCore is null, because 3632 // mNativeClass is only set if mWebViewCore is non null 3633 if (mNativeClass == 0) return; 3634 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 3635 } 3636 3637 @Override 3638 protected void onFocusChanged(boolean focused, int direction, 3639 Rect previouslyFocusedRect) { 3640 if (DebugFlags.WEB_VIEW) { 3641 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 3642 } 3643 if (focused) { 3644 // When we regain focus, if we have window focus, resume drawing 3645 // the cursor ring 3646 if (hasWindowFocus()) { 3647 mDrawCursorRing = true; 3648 if (mNativeClass != 0) { 3649 nativeRecordButtons(true, false, true); 3650 } 3651 //} else { 3652 // The WebView has gained focus while we do not have 3653 // windowfocus. When our window lost focus, we should have 3654 // called nativeRecordButtons(false...) 3655 } 3656 } else { 3657 // When we lost focus, unless focus went to the TextView (which is 3658 // true if we are in editing mode), stop drawing the cursor ring. 3659 if (!inEditingMode()) { 3660 mDrawCursorRing = false; 3661 if (mNativeClass != 0) { 3662 nativeRecordButtons(false, false, true); 3663 } 3664 setFocusControllerInactive(); 3665 } 3666 mGotKeyDown = false; 3667 } 3668 3669 super.onFocusChanged(focused, direction, previouslyFocusedRect); 3670 } 3671 3672 @Override 3673 protected void onSizeChanged(int w, int h, int ow, int oh) { 3674 super.onSizeChanged(w, h, ow, oh); 3675 // Center zooming to the center of the screen. 3676 mZoomCenterX = getViewWidth() * .5f; 3677 mZoomCenterY = getViewHeight() * .5f; 3678 3679 // update mMinZoomScale if the minimum zoom scale is not fixed 3680 if (!mMinZoomScaleFixed) { 3681 mMinZoomScale = (float) getViewWidth() 3682 / (mDrawHistory ? mHistoryPicture.getWidth() 3683 : mZoomOverviewWidth); 3684 } 3685 3686 // we always force, in case our height changed, in which case we still 3687 // want to send the notification over to webkit 3688 setNewZoomScale(mActualScale, true); 3689 } 3690 3691 @Override 3692 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 3693 super.onScrollChanged(l, t, oldl, oldt); 3694 3695 sendOurVisibleRect(); 3696 } 3697 3698 3699 @Override 3700 public boolean dispatchKeyEvent(KeyEvent event) { 3701 boolean dispatch = true; 3702 3703 if (!inEditingMode()) { 3704 if (event.getAction() == KeyEvent.ACTION_DOWN) { 3705 mGotKeyDown = true; 3706 } else { 3707 if (!mGotKeyDown) { 3708 /* 3709 * We got a key up for which we were not the recipient of 3710 * the original key down. Don't give it to the view. 3711 */ 3712 dispatch = false; 3713 } 3714 mGotKeyDown = false; 3715 } 3716 } 3717 3718 if (dispatch) { 3719 return super.dispatchKeyEvent(event); 3720 } else { 3721 // We didn't dispatch, so let something else handle the key 3722 return false; 3723 } 3724 } 3725 3726 // Here are the snap align logic: 3727 // 1. If it starts nearly horizontally or vertically, snap align; 3728 // 2. If there is a dramitic direction change, let it go; 3729 // 3. If there is a same direction back and forth, lock it. 3730 3731 // adjustable parameters 3732 private int mMinLockSnapReverseDistance; 3733 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 3734 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 3735 3736 @Override 3737 public boolean onTouchEvent(MotionEvent ev) { 3738 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 3739 return false; 3740 } 3741 3742 if (DebugFlags.WEB_VIEW) { 3743 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 3744 + mTouchMode); 3745 } 3746 3747 int action = ev.getAction(); 3748 float x = ev.getX(); 3749 float y = ev.getY(); 3750 long eventTime = ev.getEventTime(); 3751 3752 // Due to the touch screen edge effect, a touch closer to the edge 3753 // always snapped to the edge. As getViewWidth() can be different from 3754 // getWidth() due to the scrollbar, adjusting the point to match 3755 // getViewWidth(). Same applied to the height. 3756 if (x > getViewWidth() - 1) { 3757 x = getViewWidth() - 1; 3758 } 3759 if (y > getViewHeight() - 1) { 3760 y = getViewHeight() - 1; 3761 } 3762 3763 // pass the touch events from UI thread to WebCore thread 3764 if (mForwardTouchEvents && mTouchMode != SCROLL_ZOOM_OUT 3765 && mTouchMode != SCROLL_ZOOM_ANIMATION_IN 3766 && mTouchMode != SCROLL_ZOOM_ANIMATION_OUT 3767 && (action != MotionEvent.ACTION_MOVE || 3768 eventTime - mLastSentTouchTime > TOUCH_SENT_INTERVAL)) { 3769 WebViewCore.TouchEventData ted = new WebViewCore.TouchEventData(); 3770 ted.mAction = action; 3771 ted.mX = viewToContent((int) x + mScrollX); 3772 ted.mY = viewToContent((int) y + mScrollY); 3773 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 3774 mLastSentTouchTime = eventTime; 3775 } 3776 3777 int deltaX = (int) (mLastTouchX - x); 3778 int deltaY = (int) (mLastTouchY - y); 3779 3780 switch (action) { 3781 case MotionEvent.ACTION_DOWN: { 3782 if (mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3783 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3784 // no interaction while animation is in progress 3785 break; 3786 } else if (mTouchMode == SCROLL_ZOOM_OUT) { 3787 mLastScrollX = mZoomScrollX; 3788 mLastScrollY = mZoomScrollY; 3789 // If two taps are close, ignore the first tap 3790 } else if (!mScroller.isFinished()) { 3791 mScroller.abortAnimation(); 3792 mTouchMode = TOUCH_DRAG_START_MODE; 3793 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 3794 } else if (mShiftIsPressed) { 3795 mSelectX = mScrollX + (int) x; 3796 mSelectY = mScrollY + (int) y; 3797 mTouchMode = TOUCH_SELECT_MODE; 3798 if (DebugFlags.WEB_VIEW) { 3799 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 3800 } 3801 nativeMoveSelection(viewToContent(mSelectX) 3802 , viewToContent(mSelectY), false); 3803 mTouchSelection = mExtendSelection = true; 3804 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 3805 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 3806 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 3807 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 3808 } else { 3809 // commit the short press action for the previous tap 3810 doShortPress(); 3811 // continue, mTouchMode should be still TOUCH_INIT_MODE 3812 } 3813 } else { 3814 mTouchMode = TOUCH_INIT_MODE; 3815 mPreventDrag = mForwardTouchEvents; 3816 mWebViewCore.sendMessage( 3817 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 3818 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 3819 EventLog.writeEvent(EVENT_LOG_DOUBLE_TAP_DURATION, 3820 (eventTime - mLastTouchUpTime), eventTime); 3821 } 3822 } 3823 // Trigger the link 3824 if (mTouchMode == TOUCH_INIT_MODE 3825 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3826 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3827 .obtainMessage(SWITCH_TO_SHORTPRESS), TAP_TIMEOUT); 3828 } 3829 // Remember where the motion event started 3830 mLastTouchX = x; 3831 mLastTouchY = y; 3832 mLastTouchTime = eventTime; 3833 mVelocityTracker = VelocityTracker.obtain(); 3834 mSnapScrollMode = SNAP_NONE; 3835 break; 3836 } 3837 case MotionEvent.ACTION_MOVE: { 3838 if (mTouchMode == TOUCH_DONE_MODE 3839 || mTouchMode == SCROLL_ZOOM_ANIMATION_IN 3840 || mTouchMode == SCROLL_ZOOM_ANIMATION_OUT) { 3841 // no dragging during scroll zoom animation 3842 break; 3843 } 3844 if (mTouchMode == SCROLL_ZOOM_OUT) { 3845 // while fully zoomed out, move the virtual window 3846 moveZoomScrollWindow(x, y); 3847 break; 3848 } 3849 mVelocityTracker.addMovement(ev); 3850 3851 if (mTouchMode != TOUCH_DRAG_MODE) { 3852 if (mTouchMode == TOUCH_SELECT_MODE) { 3853 mSelectX = mScrollX + (int) x; 3854 mSelectY = mScrollY + (int) y; 3855 if (DebugFlags.WEB_VIEW) { 3856 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 3857 } 3858 nativeMoveSelection(viewToContent(mSelectX) 3859 , viewToContent(mSelectY), true); 3860 invalidate(); 3861 break; 3862 } 3863 if (mPreventDrag || (deltaX * deltaX + deltaY * deltaY) 3864 < mTouchSlopSquare) { 3865 break; 3866 } 3867 3868 if (mTouchMode == TOUCH_SHORTPRESS_MODE 3869 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3870 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3871 } else if (mTouchMode == TOUCH_INIT_MODE 3872 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 3873 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3874 } 3875 3876 // if it starts nearly horizontal or vertical, enforce it 3877 int ax = Math.abs(deltaX); 3878 int ay = Math.abs(deltaY); 3879 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 3880 mSnapScrollMode = SNAP_X; 3881 mSnapPositive = deltaX > 0; 3882 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 3883 mSnapScrollMode = SNAP_Y; 3884 mSnapPositive = deltaY > 0; 3885 } 3886 3887 mTouchMode = TOUCH_DRAG_MODE; 3888 WebViewCore.pauseUpdate(mWebViewCore); 3889 if (!mDragFromTextInput) { 3890 nativeHideCursor(); 3891 } 3892 WebSettings settings = getSettings(); 3893 if (settings.supportZoom() && !mInZoomOverview 3894 && settings.getBuiltInZoomControls() 3895 && !mZoomButtonsController.isVisible() 3896 && (canZoomScrollOut() || 3897 mMinZoomScale < mMaxZoomScale)) { 3898 mZoomButtonsController.setVisible(true); 3899 } 3900 } 3901 3902 // do pan 3903 int newScrollX = pinLocX(mScrollX + deltaX); 3904 deltaX = newScrollX - mScrollX; 3905 int newScrollY = pinLocY(mScrollY + deltaY); 3906 deltaY = newScrollY - mScrollY; 3907 boolean done = false; 3908 if (deltaX == 0 && deltaY == 0) { 3909 done = true; 3910 } else { 3911 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 3912 int ax = Math.abs(deltaX); 3913 int ay = Math.abs(deltaY); 3914 if (mSnapScrollMode == SNAP_X) { 3915 // radical change means getting out of snap mode 3916 if (ay > MAX_SLOPE_FOR_DIAG * ax 3917 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3918 mSnapScrollMode = SNAP_NONE; 3919 } 3920 // reverse direction means lock in the snap mode 3921 if ((ax > MAX_SLOPE_FOR_DIAG * ay) && 3922 ((mSnapPositive && 3923 deltaX < -mMinLockSnapReverseDistance) 3924 || (!mSnapPositive && 3925 deltaX > mMinLockSnapReverseDistance))) { 3926 mSnapScrollMode = SNAP_X_LOCK; 3927 } 3928 } else { 3929 // radical change means getting out of snap mode 3930 if ((ax > MAX_SLOPE_FOR_DIAG * ay) 3931 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 3932 mSnapScrollMode = SNAP_NONE; 3933 } 3934 // reverse direction means lock in the snap mode 3935 if ((ay > MAX_SLOPE_FOR_DIAG * ax) && 3936 ((mSnapPositive && 3937 deltaY < -mMinLockSnapReverseDistance) 3938 || (!mSnapPositive && 3939 deltaY > mMinLockSnapReverseDistance))) { 3940 mSnapScrollMode = SNAP_Y_LOCK; 3941 } 3942 } 3943 } 3944 3945 if (mSnapScrollMode == SNAP_X 3946 || mSnapScrollMode == SNAP_X_LOCK) { 3947 scrollBy(deltaX, 0); 3948 mLastTouchX = x; 3949 } else if (mSnapScrollMode == SNAP_Y 3950 || mSnapScrollMode == SNAP_Y_LOCK) { 3951 scrollBy(0, deltaY); 3952 mLastTouchY = y; 3953 } else { 3954 scrollBy(deltaX, deltaY); 3955 mLastTouchX = x; 3956 mLastTouchY = y; 3957 } 3958 mLastTouchTime = eventTime; 3959 mUserScroll = true; 3960 } 3961 3962 if (!getSettings().getBuiltInZoomControls() && !mInZoomOverview) { 3963 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 3964 boolean showMagnify = canZoomScrollOut(); 3965 if (mZoomControls != null && (showPlusMinus || showMagnify)) { 3966 if (mZoomControls.getVisibility() == View.VISIBLE) { 3967 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 3968 } else { 3969 mZoomControls.show(showPlusMinus, showMagnify); 3970 } 3971 mPrivateHandler.postDelayed(mZoomControlRunnable, 3972 ZOOM_CONTROLS_TIMEOUT); 3973 } 3974 } 3975 3976 if (done) { 3977 // return false to indicate that we can't pan out of the 3978 // view space 3979 return false; 3980 } 3981 break; 3982 } 3983 case MotionEvent.ACTION_UP: { 3984 mLastTouchUpTime = eventTime; 3985 switch (mTouchMode) { 3986 case TOUCH_DOUBLE_TAP_MODE: // double tap 3987 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3988 mTouchMode = TOUCH_DONE_MODE; 3989 doDoubleTap(); 3990 break; 3991 case TOUCH_INIT_MODE: // tap 3992 if (ENABLE_DOUBLETAP_ZOOM) { 3993 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 3994 if (!mPreventDrag) { 3995 mPrivateHandler.sendMessageDelayed( 3996 mPrivateHandler.obtainMessage( 3997 RELEASE_SINGLE_TAP), 3998 ViewConfiguration.getDoubleTapTimeout()); 3999 } 4000 break; 4001 } 4002 // fall through 4003 case TOUCH_SHORTPRESS_START_MODE: 4004 case TOUCH_SHORTPRESS_MODE: 4005 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4006 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4007 mTouchMode = TOUCH_DONE_MODE; 4008 doShortPress(); 4009 break; 4010 case TOUCH_SELECT_MODE: 4011 commitCopy(); 4012 mTouchSelection = false; 4013 break; 4014 case SCROLL_ZOOM_ANIMATION_IN: 4015 case SCROLL_ZOOM_ANIMATION_OUT: 4016 // no action during scroll animation 4017 break; 4018 case SCROLL_ZOOM_OUT: 4019 if (DebugFlags.WEB_VIEW) { 4020 Log.v(LOGTAG, "ACTION_UP SCROLL_ZOOM_OUT" 4021 + " eventTime - mLastTouchTime=" 4022 + (eventTime - mLastTouchTime)); 4023 } 4024 // for now, always zoom back when the drag completes 4025 if (true || eventTime - mLastTouchTime < TAP_TIMEOUT) { 4026 // but if we tap, zoom in where we tap 4027 if (eventTime - mLastTouchTime < TAP_TIMEOUT) { 4028 zoomScrollTap(x, y); 4029 } 4030 // start zooming in back to the original view 4031 setZoomScrollIn(); 4032 mTouchMode = SCROLL_ZOOM_ANIMATION_IN; 4033 invalidate(); 4034 } 4035 break; 4036 case TOUCH_DRAG_MODE: 4037 // if the user waits a while w/o moving before the 4038 // up, we don't want to do a fling 4039 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4040 mVelocityTracker.addMovement(ev); 4041 doFling(); 4042 break; 4043 } 4044 WebViewCore.resumeUpdate(mWebViewCore); 4045 break; 4046 case TOUCH_DRAG_START_MODE: 4047 case TOUCH_DONE_MODE: 4048 // do nothing 4049 break; 4050 } 4051 // we also use mVelocityTracker == null to tell us that we are 4052 // not "moving around", so we can take the slower/prettier 4053 // mode in the drawing code 4054 if (mVelocityTracker != null) { 4055 mVelocityTracker.recycle(); 4056 mVelocityTracker = null; 4057 } 4058 break; 4059 } 4060 case MotionEvent.ACTION_CANCEL: { 4061 // we also use mVelocityTracker == null to tell us that we are 4062 // not "moving around", so we can take the slower/prettier 4063 // mode in the drawing code 4064 if (mVelocityTracker != null) { 4065 mVelocityTracker.recycle(); 4066 mVelocityTracker = null; 4067 } 4068 if (mTouchMode == SCROLL_ZOOM_OUT || 4069 mTouchMode == SCROLL_ZOOM_ANIMATION_IN) { 4070 scrollTo(mZoomScrollX, mZoomScrollY); 4071 } else if (mTouchMode == TOUCH_DRAG_MODE) { 4072 WebViewCore.resumeUpdate(mWebViewCore); 4073 } 4074 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4075 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4076 mTouchMode = TOUCH_DONE_MODE; 4077 nativeHideCursor(); 4078 break; 4079 } 4080 } 4081 return true; 4082 } 4083 4084 private long mTrackballFirstTime = 0; 4085 private long mTrackballLastTime = 0; 4086 private float mTrackballRemainsX = 0.0f; 4087 private float mTrackballRemainsY = 0.0f; 4088 private int mTrackballXMove = 0; 4089 private int mTrackballYMove = 0; 4090 private boolean mExtendSelection = false; 4091 private boolean mTouchSelection = false; 4092 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 4093 private static final int TRACKBALL_TIMEOUT = 200; 4094 private static final int TRACKBALL_WAIT = 100; 4095 private static final int TRACKBALL_SCALE = 400; 4096 private static final int TRACKBALL_SCROLL_COUNT = 5; 4097 private static final int TRACKBALL_MOVE_COUNT = 10; 4098 private static final int TRACKBALL_MULTIPLIER = 3; 4099 private static final int SELECT_CURSOR_OFFSET = 16; 4100 private int mSelectX = 0; 4101 private int mSelectY = 0; 4102 private boolean mShiftIsPressed = false; 4103 private boolean mTrackballDown = false; 4104 private long mTrackballUpTime = 0; 4105 private long mLastCursorTime = 0; 4106 private Rect mLastCursorBounds; 4107 4108 // Set by default; BrowserActivity clears to interpret trackball data 4109 // directly for movement. Currently, the framework only passes 4110 // arrow key events, not trackball events, from one child to the next 4111 private boolean mMapTrackballToArrowKeys = true; 4112 4113 public void setMapTrackballToArrowKeys(boolean setMap) { 4114 mMapTrackballToArrowKeys = setMap; 4115 } 4116 4117 void resetTrackballTime() { 4118 mTrackballLastTime = 0; 4119 } 4120 4121 @Override 4122 public boolean onTrackballEvent(MotionEvent ev) { 4123 long time = ev.getEventTime(); 4124 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 4125 if (ev.getY() > 0) pageDown(true); 4126 if (ev.getY() < 0) pageUp(true); 4127 return true; 4128 } 4129 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 4130 mPrivateHandler.removeMessages(SWITCH_TO_CLICK); 4131 mTrackballDown = true; 4132 if (mNativeClass == 0) { 4133 return false; 4134 } 4135 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4136 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 4137 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 4138 nativeSelectBestAt(mLastCursorBounds); 4139 } 4140 if (DebugFlags.WEB_VIEW) { 4141 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 4142 + " time=" + time 4143 + " mLastCursorTime=" + mLastCursorTime); 4144 } 4145 if (isInTouchMode()) requestFocusFromTouch(); 4146 return false; // let common code in onKeyDown at it 4147 } 4148 if (ev.getAction() == MotionEvent.ACTION_UP) { 4149 // LONG_PRESS_CENTER is set in common onKeyDown 4150 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4151 mTrackballDown = false; 4152 mTrackballUpTime = time; 4153 if (mShiftIsPressed) { 4154 if (mExtendSelection) { 4155 commitCopy(); 4156 } else { 4157 mExtendSelection = true; 4158 } 4159 } 4160 if (DebugFlags.WEB_VIEW) { 4161 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 4162 + " time=" + time 4163 ); 4164 } 4165 return false; // let common code in onKeyUp at it 4166 } 4167 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 4168 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 4169 return false; 4170 } 4171 // no move if we're still waiting on SWITCH_TO_CLICK timeout 4172 if (mTouchMode == TOUCH_DOUBLECLICK_MODE) { 4173 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent 2 click quit"); 4174 return true; 4175 } 4176 if (mTrackballDown) { 4177 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 4178 return true; // discard move if trackball is down 4179 } 4180 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 4181 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 4182 return true; 4183 } 4184 // TODO: alternatively we can do panning as touch does 4185 switchOutDrawHistory(); 4186 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 4187 if (DebugFlags.WEB_VIEW) { 4188 Log.v(LOGTAG, "onTrackballEvent time=" 4189 + time + " last=" + mTrackballLastTime); 4190 } 4191 mTrackballFirstTime = time; 4192 mTrackballXMove = mTrackballYMove = 0; 4193 } 4194 mTrackballLastTime = time; 4195 if (DebugFlags.WEB_VIEW) { 4196 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 4197 } 4198 mTrackballRemainsX += ev.getX(); 4199 mTrackballRemainsY += ev.getY(); 4200 doTrackball(time); 4201 return true; 4202 } 4203 4204 void moveSelection(float xRate, float yRate) { 4205 if (mNativeClass == 0) 4206 return; 4207 int width = getViewWidth(); 4208 int height = getViewHeight(); 4209 mSelectX += scaleTrackballX(xRate, width); 4210 mSelectY += scaleTrackballY(yRate, height); 4211 int maxX = width + mScrollX; 4212 int maxY = height + mScrollY; 4213 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 4214 , mSelectX)); 4215 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 4216 , mSelectY)); 4217 if (DebugFlags.WEB_VIEW) { 4218 Log.v(LOGTAG, "moveSelection" 4219 + " mSelectX=" + mSelectX 4220 + " mSelectY=" + mSelectY 4221 + " mScrollX=" + mScrollX 4222 + " mScrollY=" + mScrollY 4223 + " xRate=" + xRate 4224 + " yRate=" + yRate 4225 ); 4226 } 4227 nativeMoveSelection(viewToContent(mSelectX) 4228 , viewToContent(mSelectY), mExtendSelection); 4229 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 4230 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4231 : 0; 4232 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 4233 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 4234 : 0; 4235 pinScrollBy(scrollX, scrollY, true, 0); 4236 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 4237 requestRectangleOnScreen(select); 4238 invalidate(); 4239 } 4240 4241 private int scaleTrackballX(float xRate, int width) { 4242 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 4243 int nextXMove = xMove; 4244 if (xMove > 0) { 4245 if (xMove > mTrackballXMove) { 4246 xMove -= mTrackballXMove; 4247 } 4248 } else if (xMove < mTrackballXMove) { 4249 xMove -= mTrackballXMove; 4250 } 4251 mTrackballXMove = nextXMove; 4252 return xMove; 4253 } 4254 4255 private int scaleTrackballY(float yRate, int height) { 4256 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 4257 int nextYMove = yMove; 4258 if (yMove > 0) { 4259 if (yMove > mTrackballYMove) { 4260 yMove -= mTrackballYMove; 4261 } 4262 } else if (yMove < mTrackballYMove) { 4263 yMove -= mTrackballYMove; 4264 } 4265 mTrackballYMove = nextYMove; 4266 return yMove; 4267 } 4268 4269 private int keyCodeToSoundsEffect(int keyCode) { 4270 switch(keyCode) { 4271 case KeyEvent.KEYCODE_DPAD_UP: 4272 return SoundEffectConstants.NAVIGATION_UP; 4273 case KeyEvent.KEYCODE_DPAD_RIGHT: 4274 return SoundEffectConstants.NAVIGATION_RIGHT; 4275 case KeyEvent.KEYCODE_DPAD_DOWN: 4276 return SoundEffectConstants.NAVIGATION_DOWN; 4277 case KeyEvent.KEYCODE_DPAD_LEFT: 4278 return SoundEffectConstants.NAVIGATION_LEFT; 4279 } 4280 throw new IllegalArgumentException("keyCode must be one of " + 4281 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 4282 "KEYCODE_DPAD_LEFT}."); 4283 } 4284 4285 private void doTrackball(long time) { 4286 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 4287 if (elapsed == 0) { 4288 elapsed = TRACKBALL_TIMEOUT; 4289 } 4290 float xRate = mTrackballRemainsX * 1000 / elapsed; 4291 float yRate = mTrackballRemainsY * 1000 / elapsed; 4292 if (mShiftIsPressed) { 4293 moveSelection(xRate, yRate); 4294 mTrackballRemainsX = mTrackballRemainsY = 0; 4295 return; 4296 } 4297 float ax = Math.abs(xRate); 4298 float ay = Math.abs(yRate); 4299 float maxA = Math.max(ax, ay); 4300 if (DebugFlags.WEB_VIEW) { 4301 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 4302 + " xRate=" + xRate 4303 + " yRate=" + yRate 4304 + " mTrackballRemainsX=" + mTrackballRemainsX 4305 + " mTrackballRemainsY=" + mTrackballRemainsY); 4306 } 4307 int width = mContentWidth - getViewWidth(); 4308 int height = mContentHeight - getViewHeight(); 4309 if (width < 0) width = 0; 4310 if (height < 0) height = 0; 4311 if (mTouchMode == SCROLL_ZOOM_OUT) { 4312 int oldX = mZoomScrollX; 4313 int oldY = mZoomScrollY; 4314 int maxWH = Math.max(width, height); 4315 mZoomScrollX += scaleTrackballX(xRate, maxWH); 4316 mZoomScrollY += scaleTrackballY(yRate, maxWH); 4317 if (DebugFlags.WEB_VIEW) { 4318 Log.v(LOGTAG, "doTrackball SCROLL_ZOOM_OUT" 4319 + " mZoomScrollX=" + mZoomScrollX 4320 + " mZoomScrollY=" + mZoomScrollY); 4321 } 4322 mZoomScrollX = Math.min(width, Math.max(0, mZoomScrollX)); 4323 mZoomScrollY = Math.min(height, Math.max(0, mZoomScrollY)); 4324 if (oldX != mZoomScrollX || oldY != mZoomScrollY) { 4325 invalidate(); 4326 } 4327 mTrackballRemainsX = mTrackballRemainsY = 0; 4328 return; 4329 } 4330 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 4331 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 4332 maxA = Math.max(ax, ay); 4333 int count = Math.max(0, (int) maxA); 4334 int oldScrollX = mScrollX; 4335 int oldScrollY = mScrollY; 4336 if (count > 0) { 4337 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 4338 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 4339 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 4340 KeyEvent.KEYCODE_DPAD_RIGHT; 4341 count = Math.min(count, TRACKBALL_MOVE_COUNT); 4342 if (DebugFlags.WEB_VIEW) { 4343 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 4344 + " count=" + count 4345 + " mTrackballRemainsX=" + mTrackballRemainsX 4346 + " mTrackballRemainsY=" + mTrackballRemainsY); 4347 } 4348 if (navHandledKey(selectKeyCode, count, false, time, false)) { 4349 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 4350 } 4351 mTrackballRemainsX = mTrackballRemainsY = 0; 4352 } 4353 if (count >= TRACKBALL_SCROLL_COUNT) { 4354 int xMove = scaleTrackballX(xRate, width); 4355 int yMove = scaleTrackballY(yRate, height); 4356 if (DebugFlags.WEB_VIEW) { 4357 Log.v(LOGTAG, "doTrackball pinScrollBy" 4358 + " count=" + count 4359 + " xMove=" + xMove + " yMove=" + yMove 4360 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 4361 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 4362 ); 4363 } 4364 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 4365 xMove = 0; 4366 } 4367 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 4368 yMove = 0; 4369 } 4370 if (xMove != 0 || yMove != 0) { 4371 pinScrollBy(xMove, yMove, true, 0); 4372 } 4373 mUserScroll = true; 4374 } 4375 } 4376 4377 public void flingScroll(int vx, int vy) { 4378 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4379 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4380 4381 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, maxX, 0, maxY); 4382 invalidate(); 4383 } 4384 4385 private void doFling() { 4386 if (mVelocityTracker == null) { 4387 return; 4388 } 4389 int maxX = Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 4390 int maxY = Math.max(computeVerticalScrollRange() - getViewHeight(), 0); 4391 4392 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 4393 int vx = (int) mVelocityTracker.getXVelocity(); 4394 int vy = (int) mVelocityTracker.getYVelocity(); 4395 4396 if (mSnapScrollMode != SNAP_NONE) { 4397 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_X_LOCK) { 4398 vy = 0; 4399 } else { 4400 vx = 0; 4401 } 4402 } 4403 4404 if (true /* EMG release: make our fling more like Maps' */) { 4405 // maps cuts their velocity in half 4406 vx = vx * 3 / 4; 4407 vy = vy * 3 / 4; 4408 } 4409 4410 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 4411 // TODO: duration is calculated based on velocity, if the range is 4412 // small, the animation will stop before duration is up. We may 4413 // want to calculate how long the animation is going to run to precisely 4414 // resume the webcore update. 4415 final int time = mScroller.getDuration(); 4416 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_UPDATE, time); 4417 invalidate(); 4418 } 4419 4420 private boolean zoomWithPreview(float scale) { 4421 float oldScale = mActualScale; 4422 mInitialScrollX = mScrollX; 4423 mInitialScrollY = mScrollY; 4424 4425 // snap to DEFAULT_SCALE if it is close 4426 if (scale > (mDefaultScale - 0.05) && scale < (mDefaultScale + 0.05)) { 4427 scale = mDefaultScale; 4428 } 4429 4430 setNewZoomScale(scale, false); 4431 4432 if (oldScale != mActualScale) { 4433 // use mZoomPickerScale to see zoom preview first 4434 mZoomStart = SystemClock.uptimeMillis(); 4435 mInvInitialZoomScale = 1.0f / oldScale; 4436 mInvFinalZoomScale = 1.0f / mActualScale; 4437 mZoomScale = mActualScale; 4438 if (!mInZoomOverview) { 4439 mLastScale = scale; 4440 } 4441 invalidate(); 4442 return true; 4443 } else { 4444 return false; 4445 } 4446 } 4447 4448 /** 4449 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 4450 * in charge of installing this view to the view hierarchy. This view will 4451 * become visible when the user starts scrolling via touch and fade away if 4452 * the user does not interact with it. 4453 * <p/> 4454 * API version 3 introduces a built-in zoom mechanism that is shown 4455 * automatically by the MapView. This is the preferred approach for 4456 * showing the zoom UI. 4457 * 4458 * @deprecated The built-in zoom mechanism is preferred, see 4459 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 4460 */ 4461 @Deprecated 4462 public View getZoomControls() { 4463 if (!getSettings().supportZoom()) { 4464 Log.w(LOGTAG, "This WebView doesn't support zoom."); 4465 return null; 4466 } 4467 if (mZoomControls == null) { 4468 mZoomControls = createZoomControls(); 4469 4470 /* 4471 * need to be set to VISIBLE first so that getMeasuredHeight() in 4472 * {@link #onSizeChanged()} can return the measured value for proper 4473 * layout. 4474 */ 4475 mZoomControls.setVisibility(View.VISIBLE); 4476 mZoomControlRunnable = new Runnable() { 4477 public void run() { 4478 4479 /* Don't dismiss the controls if the user has 4480 * focus on them. Wait and check again later. 4481 */ 4482 if (!mZoomControls.hasFocus()) { 4483 mZoomControls.hide(); 4484 } else { 4485 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4486 mPrivateHandler.postDelayed(mZoomControlRunnable, 4487 ZOOM_CONTROLS_TIMEOUT); 4488 } 4489 } 4490 }; 4491 } 4492 return mZoomControls; 4493 } 4494 4495 private ExtendedZoomControls createZoomControls() { 4496 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 4497 , null); 4498 zoomControls.setOnZoomInClickListener(new OnClickListener() { 4499 public void onClick(View v) { 4500 // reset time out 4501 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4502 mPrivateHandler.postDelayed(mZoomControlRunnable, 4503 ZOOM_CONTROLS_TIMEOUT); 4504 zoomIn(); 4505 } 4506 }); 4507 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 4508 public void onClick(View v) { 4509 // reset time out 4510 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4511 mPrivateHandler.postDelayed(mZoomControlRunnable, 4512 ZOOM_CONTROLS_TIMEOUT); 4513 zoomOut(); 4514 } 4515 }); 4516 zoomControls.setOnZoomMagnifyClickListener(new OnClickListener() { 4517 public void onClick(View v) { 4518 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4519 mPrivateHandler.postDelayed(mZoomControlRunnable, 4520 ZOOM_CONTROLS_TIMEOUT); 4521 zoomScrollOut(); 4522 } 4523 }); 4524 return zoomControls; 4525 } 4526 4527 /** 4528 * Gets the {@link ZoomButtonsController} which can be used to add 4529 * additional buttons to the zoom controls window. 4530 * 4531 * @return The instance of {@link ZoomButtonsController} used by this class, 4532 * or null if it is unavailable. 4533 * @hide 4534 */ 4535 public ZoomButtonsController getZoomButtonsController() { 4536 return mZoomButtonsController; 4537 } 4538 4539 /** 4540 * Perform zoom in in the webview 4541 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 4542 */ 4543 public boolean zoomIn() { 4544 // TODO: alternatively we can disallow this during draw history mode 4545 switchOutDrawHistory(); 4546 // Center zooming to the center of the screen. 4547 mZoomCenterX = getViewWidth() * .5f; 4548 mZoomCenterY = getViewHeight() * .5f; 4549 return zoomWithPreview(mActualScale * 1.25f); 4550 } 4551 4552 /** 4553 * Perform zoom out in the webview 4554 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 4555 */ 4556 public boolean zoomOut() { 4557 // TODO: alternatively we can disallow this during draw history mode 4558 switchOutDrawHistory(); 4559 float scale = mActualScale * 0.8f; 4560 if (scale < (mMinZoomScale + 0.1f) && WebView.ENABLE_DOUBLETAP_ZOOM 4561 && mWebViewCore.getSettings().getUseWideViewPort()) { 4562 // when zoom out to min scale, switch to overview mode 4563 doDoubleTap(); 4564 return true; 4565 } else { 4566 // Center zooming to the center of the screen. 4567 mZoomCenterX = getViewWidth() * .5f; 4568 mZoomCenterY = getViewHeight() * .5f; 4569 return zoomWithPreview(scale); 4570 } 4571 } 4572 4573 private void updateSelection() { 4574 if (mNativeClass == 0) { 4575 return; 4576 } 4577 // mLastTouchX and mLastTouchY are the point in the current viewport 4578 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4579 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4580 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 4581 contentX + mNavSlop, contentY + mNavSlop); 4582 nativeSelectBestAt(rect); 4583 } 4584 4585 /** 4586 * Scroll the focused text field/area to match the WebTextView 4587 * @param x New x position of the WebTextView in view coordinates 4588 * @param y New y position of the WebTextView in view coordinates 4589 */ 4590 /*package*/ void scrollFocusedTextInput(int x, int y) { 4591 if (!inEditingMode() || mWebViewCore == null) { 4592 return; 4593 } 4594 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, viewToContent(x), 4595 viewToContent(y)); 4596 } 4597 4598 /** 4599 * Set our starting point and time for a drag from the WebTextView. 4600 */ 4601 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 4602 if (!inEditingMode()) { 4603 return; 4604 } 4605 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 4606 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 4607 mLastTouchTime = eventTime; 4608 if (!mScroller.isFinished()) { 4609 mScroller.abortAnimation(); 4610 mPrivateHandler.removeMessages(RESUME_WEBCORE_UPDATE); 4611 } 4612 mSnapScrollMode = SNAP_NONE; 4613 mVelocityTracker = VelocityTracker.obtain(); 4614 mTouchMode = TOUCH_DRAG_START_MODE; 4615 } 4616 4617 /** 4618 * Given a motion event from the WebTextView, set its location to our 4619 * coordinates, and handle the event. 4620 */ 4621 /*package*/ boolean textFieldDrag(MotionEvent event) { 4622 if (!inEditingMode()) { 4623 return false; 4624 } 4625 mDragFromTextInput = true; 4626 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 4627 (float) (mWebTextView.getTop() - mScrollY)); 4628 boolean result = onTouchEvent(event); 4629 mDragFromTextInput = false; 4630 return result; 4631 } 4632 4633 /** 4634 * Do a touch up from a WebTextView. This will be handled by webkit to 4635 * change the selection. 4636 * @param event MotionEvent in the WebTextView's coordinates. 4637 */ 4638 /*package*/ void touchUpOnTextField(MotionEvent event) { 4639 if (!inEditingMode()) { 4640 return; 4641 } 4642 int x = viewToContent((int) event.getX() + mWebTextView.getLeft()); 4643 int y = viewToContent((int) event.getY() + mWebTextView.getTop()); 4644 nativeTextInputMotionUp(x, y); 4645 } 4646 4647 /*package*/ void shortPressOnTextField() { 4648 if (inEditingMode()) { 4649 View v = mWebTextView; 4650 int x = viewToContent((v.getLeft() + v.getRight()) >> 1); 4651 int y = viewToContent((v.getTop() + v.getBottom()) >> 1); 4652 nativeTextInputMotionUp(x, y); 4653 } 4654 } 4655 4656 private void doShortPress() { 4657 if (mNativeClass == 0) { 4658 return; 4659 } 4660 switchOutDrawHistory(); 4661 // mLastTouchX and mLastTouchY are the point in the current viewport 4662 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4663 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4664 if (nativeMotionUp(contentX, contentY, mNavSlop)) { 4665 if (mLogEvent) { 4666 Checkin.updateStats(mContext.getContentResolver(), 4667 Checkin.Stats.Tag.BROWSER_SNAP_CENTER, 1, 0.0); 4668 } 4669 } 4670 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 4671 playSoundEffect(SoundEffectConstants.CLICK); 4672 } 4673 } 4674 4675 private void doDoubleTap() { 4676 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 4677 return; 4678 } 4679 mZoomCenterX = mLastTouchX; 4680 mZoomCenterY = mLastTouchY; 4681 mInZoomOverview = !mInZoomOverview; 4682 if (mInZoomOverview) { 4683 if (getSettings().getBuiltInZoomControls()) { 4684 if (mZoomButtonsController.isVisible()) { 4685 mZoomButtonsController.setVisible(false); 4686 } 4687 } else { 4688 if (mZoomControlRunnable != null) { 4689 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 4690 } 4691 if (mZoomControls != null) { 4692 mZoomControls.hide(); 4693 } 4694 } 4695 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth); 4696 } else { 4697 // mLastTouchX and mLastTouchY are the point in the current viewport 4698 int contentX = viewToContent((int) mLastTouchX + mScrollX); 4699 int contentY = viewToContent((int) mLastTouchY + mScrollY); 4700 int left = nativeGetBlockLeftEdge(contentX, contentY, mActualScale); 4701 if (left != NO_LEFTEDGE) { 4702 // add a 5pt padding to the left edge. Re-calculate the zoom 4703 // center so that the new scroll x will be on the left edge. 4704 mZoomCenterX = left < 5 ? 0 : (left - 5) * mLastScale 4705 * mActualScale / (mLastScale - mActualScale); 4706 } 4707 zoomWithPreview(mLastScale); 4708 } 4709 } 4710 4711 // Called by JNI to handle a touch on a node representing an email address, 4712 // address, or phone number 4713 private void overrideLoading(String url) { 4714 mCallbackProxy.uiOverrideUrlLoading(url); 4715 } 4716 4717 // called by JNI 4718 private void sendPluginState(int state) { 4719 WebViewCore.PluginStateData psd = new WebViewCore.PluginStateData(); 4720 psd.mFrame = nativeCursorFramePointer(); 4721 psd.mNode = nativeCursorNodePointer(); 4722 psd.mState = state; 4723 mWebViewCore.sendMessage(EventHub.PLUGIN_STATE, psd); 4724 } 4725 4726 @Override 4727 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 4728 boolean result = false; 4729 if (inEditingMode()) { 4730 result = mWebTextView.requestFocus(direction, 4731 previouslyFocusedRect); 4732 } else { 4733 result = super.requestFocus(direction, previouslyFocusedRect); 4734 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 4735 // For cases such as GMail, where we gain focus from a direction, 4736 // we want to move to the first available link. 4737 // FIXME: If there are no visible links, we may not want to 4738 int fakeKeyDirection = 0; 4739 switch(direction) { 4740 case View.FOCUS_UP: 4741 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 4742 break; 4743 case View.FOCUS_DOWN: 4744 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 4745 break; 4746 case View.FOCUS_LEFT: 4747 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 4748 break; 4749 case View.FOCUS_RIGHT: 4750 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 4751 break; 4752 default: 4753 return result; 4754 } 4755 if (mNativeClass != 0 && !nativeHasCursorNode()) { 4756 navHandledKey(fakeKeyDirection, 1, true, 0, true); 4757 } 4758 } 4759 } 4760 return result; 4761 } 4762 4763 @Override 4764 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 4765 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 4766 4767 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 4768 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 4769 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 4770 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 4771 4772 int measuredHeight = heightSize; 4773 int measuredWidth = widthSize; 4774 4775 // Grab the content size from WebViewCore. 4776 int contentHeight = mContentHeight; 4777 int contentWidth = mContentWidth; 4778 4779// Log.d(LOGTAG, "------- measure " + heightMode); 4780 4781 if (heightMode != MeasureSpec.EXACTLY) { 4782 mHeightCanMeasure = true; 4783 measuredHeight = contentHeight; 4784 if (heightMode == MeasureSpec.AT_MOST) { 4785 // If we are larger than the AT_MOST height, then our height can 4786 // no longer be measured and we should scroll internally. 4787 if (measuredHeight > heightSize) { 4788 measuredHeight = heightSize; 4789 mHeightCanMeasure = false; 4790 } 4791 } 4792 } else { 4793 mHeightCanMeasure = false; 4794 } 4795 if (mNativeClass != 0) { 4796 nativeSetHeightCanMeasure(mHeightCanMeasure); 4797 } 4798 // For the width, always use the given size unless unspecified. 4799 if (widthMode == MeasureSpec.UNSPECIFIED) { 4800 mWidthCanMeasure = true; 4801 measuredWidth = contentWidth; 4802 } else { 4803 mWidthCanMeasure = false; 4804 } 4805 4806 synchronized (this) { 4807 setMeasuredDimension(measuredWidth, measuredHeight); 4808 } 4809 } 4810 4811 @Override 4812 public boolean requestChildRectangleOnScreen(View child, 4813 Rect rect, 4814 boolean immediate) { 4815 rect.offset(child.getLeft() - child.getScrollX(), 4816 child.getTop() - child.getScrollY()); 4817 4818 int height = getHeight() - getHorizontalScrollbarHeight(); 4819 int screenTop = mScrollY; 4820 int screenBottom = screenTop + height; 4821 4822 int scrollYDelta = 0; 4823 4824 if (rect.bottom > screenBottom) { 4825 int oneThirdOfScreenHeight = height / 3; 4826 if (rect.height() > 2 * oneThirdOfScreenHeight) { 4827 // If the rectangle is too tall to fit in the bottom two thirds 4828 // of the screen, place it at the top. 4829 scrollYDelta = rect.top - screenTop; 4830 } else { 4831 // If the rectangle will still fit on screen, we want its 4832 // top to be in the top third of the screen. 4833 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 4834 } 4835 } else if (rect.top < screenTop) { 4836 scrollYDelta = rect.top - screenTop; 4837 } 4838 4839 int width = getWidth() - getVerticalScrollbarWidth(); 4840 int screenLeft = mScrollX; 4841 int screenRight = screenLeft + width; 4842 4843 int scrollXDelta = 0; 4844 4845 if (rect.right > screenRight && rect.left > screenLeft) { 4846 if (rect.width() > width) { 4847 scrollXDelta += (rect.left - screenLeft); 4848 } else { 4849 scrollXDelta += (rect.right - screenRight); 4850 } 4851 } else if (rect.left < screenLeft) { 4852 scrollXDelta -= (screenLeft - rect.left); 4853 } 4854 4855 if ((scrollYDelta | scrollXDelta) != 0) { 4856 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 4857 } 4858 4859 return false; 4860 } 4861 4862 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 4863 String replace, int newStart, int newEnd) { 4864 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 4865 arg.mReplace = replace; 4866 arg.mNewStart = newStart; 4867 arg.mNewEnd = newEnd; 4868 mTextGeneration++; 4869 arg.mTextGeneration = mTextGeneration; 4870 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 4871 } 4872 4873 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 4874 if (nativeCursorWantsKeyEvents() && !nativeCursorMatchesFocus()) { 4875 mWebViewCore.sendMessage(EventHub.CLICK); 4876 } 4877 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 4878 arg.mEvent = event; 4879 arg.mCurrentText = currentText; 4880 // Increase our text generation number, and pass it to webcore thread 4881 mTextGeneration++; 4882 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 4883 // WebKit's document state is not saved until about to leave the page. 4884 // To make sure the host application, like Browser, has the up to date 4885 // document state when it goes to background, we force to save the 4886 // document state. 4887 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 4888 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 4889 cursorData(), 1000); 4890 } 4891 4892 /* package */ WebViewCore getWebViewCore() { 4893 return mWebViewCore; 4894 } 4895 4896 //------------------------------------------------------------------------- 4897 // Methods can be called from a separate thread, like WebViewCore 4898 // If it needs to call the View system, it has to send message. 4899 //------------------------------------------------------------------------- 4900 4901 /** 4902 * General handler to receive message coming from webkit thread 4903 */ 4904 class PrivateHandler extends Handler { 4905 @Override 4906 public void handleMessage(Message msg) { 4907 if (DebugFlags.WEB_VIEW) { 4908 Log.v(LOGTAG, msg.what < REMEMBER_PASSWORD || msg.what 4909 > INVAL_RECT_MSG_ID ? Integer.toString(msg.what) 4910 : HandlerDebugString[msg.what - REMEMBER_PASSWORD]); 4911 } 4912 switch (msg.what) { 4913 case REMEMBER_PASSWORD: { 4914 mDatabase.setUsernamePassword( 4915 msg.getData().getString("host"), 4916 msg.getData().getString("username"), 4917 msg.getData().getString("password")); 4918 ((Message) msg.obj).sendToTarget(); 4919 break; 4920 } 4921 case NEVER_REMEMBER_PASSWORD: { 4922 mDatabase.setUsernamePassword( 4923 msg.getData().getString("host"), null, null); 4924 ((Message) msg.obj).sendToTarget(); 4925 break; 4926 } 4927 case SWITCH_TO_SHORTPRESS: { 4928 if (mTouchMode == TOUCH_INIT_MODE) { 4929 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 4930 updateSelection(); 4931 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4932 mTouchMode = TOUCH_DONE_MODE; 4933 } 4934 break; 4935 } 4936 case SWITCH_TO_LONGPRESS: { 4937 if (!mPreventDrag) { 4938 mTouchMode = TOUCH_DONE_MODE; 4939 performLongClick(); 4940 rebuildWebTextView(); 4941 } 4942 break; 4943 } 4944 case RELEASE_SINGLE_TAP: { 4945 if (!mPreventDrag) { 4946 mTouchMode = TOUCH_DONE_MODE; 4947 doShortPress(); 4948 } 4949 break; 4950 } 4951 case SWITCH_TO_CLICK: 4952 // The user clicked with the trackball, and did not click a 4953 // second time, so perform the action of a trackball single 4954 // click 4955 mTouchMode = TOUCH_DONE_MODE; 4956 Rect visibleRect = sendOurVisibleRect(); 4957 // Note that sendOurVisibleRect calls viewToContent, so the 4958 // coordinates should be in content coordinates. 4959 if (!nativeCursorIntersects(visibleRect)) { 4960 break; 4961 } 4962 nativeSetFollowedLink(true); 4963 nativeUpdatePluginReceivesEvents(); 4964 WebViewCore.CursorData data = cursorData(); 4965 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4966 playSoundEffect(SoundEffectConstants.CLICK); 4967 boolean isTextInput = nativeCursorIsTextInput(); 4968 if (isTextInput || !mCallbackProxy.uiOverrideUrlLoading( 4969 nativeCursorText())) { 4970 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4971 nativeCursorNodePointer()); 4972 } 4973 if (isTextInput) { 4974 rebuildWebTextView(); 4975 } 4976 break; 4977 case SCROLL_BY_MSG_ID: 4978 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 4979 break; 4980 case SYNC_SCROLL_TO_MSG_ID: 4981 if (mUserScroll) { 4982 // if user has scrolled explicitly, don't sync the 4983 // scroll position any more 4984 mUserScroll = false; 4985 break; 4986 } 4987 // fall through 4988 case SCROLL_TO_MSG_ID: 4989 if (setContentScrollTo(msg.arg1, msg.arg2)) { 4990 // if we can't scroll to the exact position due to pin, 4991 // send a message to WebCore to re-scroll when we get a 4992 // new picture 4993 mUserScroll = false; 4994 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 4995 msg.arg1, msg.arg2); 4996 } 4997 break; 4998 case SPAWN_SCROLL_TO_MSG_ID: 4999 spawnContentScrollTo(msg.arg1, msg.arg2); 5000 break; 5001 case NEW_PICTURE_MSG_ID: { 5002 WebSettings settings = mWebViewCore.getSettings(); 5003 // called for new content 5004 final int viewWidth = getViewWidth(); 5005 final WebViewCore.DrawData draw = 5006 (WebViewCore.DrawData) msg.obj; 5007 final Point viewSize = draw.mViewPoint; 5008 boolean useWideViewport = settings.getUseWideViewPort(); 5009 WebViewCore.RestoreState restoreState = draw.mRestoreState; 5010 if (restoreState != null) { 5011 mInZoomOverview = false; 5012 mLastScale = restoreState.mTextWrapScale; 5013 if (restoreState.mMinScale == 0) { 5014 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 5015 mMinZoomScaleFixed = false; 5016 } else { 5017 mMinZoomScale = restoreState.mMinScale; 5018 mMinZoomScaleFixed = true; 5019 } 5020 if (restoreState.mMaxScale == 0) { 5021 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 5022 } else { 5023 mMaxZoomScale = restoreState.mMaxScale; 5024 } 5025 if (useWideViewport && restoreState.mViewScale == 0) { 5026 mInZoomOverview = ENABLE_DOUBLETAP_ZOOM 5027 && settings.getLoadWithOverviewMode(); 5028 } 5029 setNewZoomScale(mLastScale, false); 5030 setContentScrollTo(restoreState.mScrollX, 5031 restoreState.mScrollY); 5032 // As we are on a new page, remove the WebTextView. This 5033 // is necessary for page loads driven by webkit, and in 5034 // particular when the user was on a password field, so 5035 // the WebTextView was visible. 5036 clearTextEntry(); 5037 } 5038 // We update the layout (i.e. request a layout from the 5039 // view system) if the last view size that we sent to 5040 // WebCore matches the view size of the picture we just 5041 // received in the fixed dimension. 5042 final boolean updateLayout = viewSize.x == mLastWidthSent 5043 && viewSize.y == mLastHeightSent; 5044 recordNewContentSize(draw.mWidthHeight.x, 5045 draw.mWidthHeight.y, updateLayout); 5046 if (DebugFlags.WEB_VIEW) { 5047 Rect b = draw.mInvalRegion.getBounds(); 5048 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 5049 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 5050 } 5051 invalidate(contentToView(draw.mInvalRegion.getBounds())); 5052 if (mPictureListener != null) { 5053 mPictureListener.onNewPicture(WebView.this, capturePicture()); 5054 } 5055 if (useWideViewport) { 5056 mZoomOverviewWidth = Math.max(draw.mMinPrefWidth, 5057 draw.mViewPoint.x); 5058 } 5059 if (!mMinZoomScaleFixed) { 5060 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 5061 } 5062 if (!mDrawHistory && mInZoomOverview) { 5063 // fit the content width to the current view. Ignore 5064 // the rounding error case. 5065 if (Math.abs((viewWidth * mInvActualScale) 5066 - mZoomOverviewWidth) > 1) { 5067 setNewZoomScale((float) viewWidth 5068 / mZoomOverviewWidth, false); 5069 } 5070 } 5071 break; 5072 } 5073 case WEBCORE_INITIALIZED_MSG_ID: 5074 // nativeCreate sets mNativeClass to a non-zero value 5075 nativeCreate(msg.arg1); 5076 break; 5077 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 5078 // Make sure that the textfield is currently focused 5079 // and representing the same node as the pointer. 5080 if (inEditingMode() && 5081 mWebTextView.isSameTextField(msg.arg1)) { 5082 if (msg.getData().getBoolean("password")) { 5083 Spannable text = (Spannable) mWebTextView.getText(); 5084 int start = Selection.getSelectionStart(text); 5085 int end = Selection.getSelectionEnd(text); 5086 mWebTextView.setInPassword(true); 5087 // Restore the selection, which may have been 5088 // ruined by setInPassword. 5089 Spannable pword = 5090 (Spannable) mWebTextView.getText(); 5091 Selection.setSelection(pword, start, end); 5092 // If the text entry has created more events, ignore 5093 // this one. 5094 } else if (msg.arg2 == mTextGeneration) { 5095 mWebTextView.setTextAndKeepSelection( 5096 (String) msg.obj); 5097 } 5098 } 5099 break; 5100 case UPDATE_TEXT_SELECTION_MSG_ID: 5101 if (inEditingMode() 5102 && mWebTextView.isSameTextField(msg.arg1) 5103 && msg.arg2 == mTextGeneration) { 5104 WebViewCore.TextSelectionData tData 5105 = (WebViewCore.TextSelectionData) msg.obj; 5106 mWebTextView.setSelectionFromWebKit(tData.mStart, 5107 tData.mEnd); 5108 } 5109 break; 5110 case MOVE_OUT_OF_PLUGIN: 5111 if (nativePluginEatsNavKey()) { 5112 navHandledKey(msg.arg1, 1, false, 0, true); 5113 } 5114 break; 5115 case UPDATE_TEXT_ENTRY_MSG_ID: 5116 // this is sent after finishing resize in WebViewCore. Make 5117 // sure the text edit box is still on the screen. 5118 if (inEditingMode() && nativeCursorIsTextInput()) { 5119 mWebTextView.bringIntoView(); 5120 rebuildWebTextView(); 5121 } 5122 break; 5123 case CLEAR_TEXT_ENTRY: 5124 clearTextEntry(); 5125 break; 5126 case INVAL_RECT_MSG_ID: { 5127 Rect r = (Rect)msg.obj; 5128 if (r == null) { 5129 invalidate(); 5130 } else { 5131 // we need to scale r from content into view coords, 5132 // which viewInvalidate() does for us 5133 viewInvalidate(r.left, r.top, r.right, r.bottom); 5134 } 5135 break; 5136 } 5137 case REQUEST_FORM_DATA: 5138 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 5139 if (mWebTextView.isSameTextField(msg.arg1)) { 5140 mWebTextView.setAdapterCustom(adapter); 5141 } 5142 break; 5143 case UPDATE_CLIPBOARD: 5144 String str = (String) msg.obj; 5145 if (DebugFlags.WEB_VIEW) { 5146 Log.v(LOGTAG, "UPDATE_CLIPBOARD " + str); 5147 } 5148 try { 5149 IClipboard clip = IClipboard.Stub.asInterface( 5150 ServiceManager.getService("clipboard")); 5151 clip.setClipboardText(str); 5152 } catch (android.os.RemoteException e) { 5153 Log.e(LOGTAG, "Clipboard failed", e); 5154 } 5155 break; 5156 case RESUME_WEBCORE_UPDATE: 5157 WebViewCore.resumeUpdate(mWebViewCore); 5158 break; 5159 5160 case LONG_PRESS_CENTER: 5161 // as this is shared by keydown and trackballdown, reset all 5162 // the states 5163 mGotCenterDown = false; 5164 mTrackballDown = false; 5165 // LONG_PRESS_CENTER is sent as a delayed message. If we 5166 // switch to windows overview, the WebView will be 5167 // temporarily removed from the view system. In that case, 5168 // do nothing. 5169 if (getParent() != null) { 5170 performLongClick(); 5171 } 5172 break; 5173 5174 case WEBCORE_NEED_TOUCH_EVENTS: 5175 mForwardTouchEvents = (msg.arg1 != 0); 5176 break; 5177 5178 case PREVENT_TOUCH_ID: 5179 if (msg.arg1 == MotionEvent.ACTION_DOWN) { 5180 mPreventDrag = msg.arg2 == 1; 5181 if (mPreventDrag) { 5182 mTouchMode = TOUCH_DONE_MODE; 5183 } 5184 } 5185 break; 5186 5187 case REQUEST_KEYBOARD: 5188 if (msg.arg1 == 0) { 5189 hideSoftKeyboard(); 5190 } else { 5191 displaySoftKeyboard(false); 5192 } 5193 break; 5194 5195 default: 5196 super.handleMessage(msg); 5197 break; 5198 } 5199 } 5200 } 5201 5202 // Class used to use a dropdown for a <select> element 5203 private class InvokeListBox implements Runnable { 5204 // Whether the listbox allows multiple selection. 5205 private boolean mMultiple; 5206 // Passed in to a list with multiple selection to tell 5207 // which items are selected. 5208 private int[] mSelectedArray; 5209 // Passed in to a list with single selection to tell 5210 // where the initial selection is. 5211 private int mSelection; 5212 5213 private Container[] mContainers; 5214 5215 // Need these to provide stable ids to my ArrayAdapter, 5216 // which normally does not have stable ids. (Bug 1250098) 5217 private class Container extends Object { 5218 String mString; 5219 boolean mEnabled; 5220 int mId; 5221 5222 public String toString() { 5223 return mString; 5224 } 5225 } 5226 5227 /** 5228 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 5229 * and allow filtering. 5230 */ 5231 private class MyArrayListAdapter extends ArrayAdapter<Container> { 5232 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 5233 super(context, 5234 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 5235 com.android.internal.R.layout.select_dialog_singlechoice, 5236 objects); 5237 } 5238 5239 @Override 5240 public boolean hasStableIds() { 5241 // AdapterView's onChanged method uses this to determine whether 5242 // to restore the old state. Return false so that the old (out 5243 // of date) state does not replace the new, valid state. 5244 return false; 5245 } 5246 5247 private Container item(int position) { 5248 if (position < 0 || position >= getCount()) { 5249 return null; 5250 } 5251 return (Container) getItem(position); 5252 } 5253 5254 @Override 5255 public long getItemId(int position) { 5256 Container item = item(position); 5257 if (item == null) { 5258 return -1; 5259 } 5260 return item.mId; 5261 } 5262 5263 @Override 5264 public boolean areAllItemsEnabled() { 5265 return false; 5266 } 5267 5268 @Override 5269 public boolean isEnabled(int position) { 5270 Container item = item(position); 5271 if (item == null) { 5272 return false; 5273 } 5274 return item.mEnabled; 5275 } 5276 } 5277 5278 private InvokeListBox(String[] array, 5279 boolean[] enabled, int[] selected) { 5280 mMultiple = true; 5281 mSelectedArray = selected; 5282 5283 int length = array.length; 5284 mContainers = new Container[length]; 5285 for (int i = 0; i < length; i++) { 5286 mContainers[i] = new Container(); 5287 mContainers[i].mString = array[i]; 5288 mContainers[i].mEnabled = enabled[i]; 5289 mContainers[i].mId = i; 5290 } 5291 } 5292 5293 private InvokeListBox(String[] array, boolean[] enabled, int 5294 selection) { 5295 mSelection = selection; 5296 mMultiple = false; 5297 5298 int length = array.length; 5299 mContainers = new Container[length]; 5300 for (int i = 0; i < length; i++) { 5301 mContainers[i] = new Container(); 5302 mContainers[i].mString = array[i]; 5303 mContainers[i].mEnabled = enabled[i]; 5304 mContainers[i].mId = i; 5305 } 5306 } 5307 5308 /* 5309 * Whenever the data set changes due to filtering, this class ensures 5310 * that the checked item remains checked. 5311 */ 5312 private class SingleDataSetObserver extends DataSetObserver { 5313 private long mCheckedId; 5314 private ListView mListView; 5315 private Adapter mAdapter; 5316 5317 /* 5318 * Create a new observer. 5319 * @param id The ID of the item to keep checked. 5320 * @param l ListView for getting and clearing the checked states 5321 * @param a Adapter for getting the IDs 5322 */ 5323 public SingleDataSetObserver(long id, ListView l, Adapter a) { 5324 mCheckedId = id; 5325 mListView = l; 5326 mAdapter = a; 5327 } 5328 5329 public void onChanged() { 5330 // The filter may have changed which item is checked. Find the 5331 // item that the ListView thinks is checked. 5332 int position = mListView.getCheckedItemPosition(); 5333 long id = mAdapter.getItemId(position); 5334 if (mCheckedId != id) { 5335 // Clear the ListView's idea of the checked item, since 5336 // it is incorrect 5337 mListView.clearChoices(); 5338 // Search for mCheckedId. If it is in the filtered list, 5339 // mark it as checked 5340 int count = mAdapter.getCount(); 5341 for (int i = 0; i < count; i++) { 5342 if (mAdapter.getItemId(i) == mCheckedId) { 5343 mListView.setItemChecked(i, true); 5344 break; 5345 } 5346 } 5347 } 5348 } 5349 5350 public void onInvalidate() {} 5351 } 5352 5353 public void run() { 5354 final ListView listView = (ListView) LayoutInflater.from(mContext) 5355 .inflate(com.android.internal.R.layout.select_dialog, null); 5356 final MyArrayListAdapter adapter = new 5357 MyArrayListAdapter(mContext, mContainers, mMultiple); 5358 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 5359 .setView(listView).setCancelable(true) 5360 .setInverseBackgroundForced(true); 5361 5362 if (mMultiple) { 5363 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 5364 public void onClick(DialogInterface dialog, int which) { 5365 mWebViewCore.sendMessage( 5366 EventHub.LISTBOX_CHOICES, 5367 adapter.getCount(), 0, 5368 listView.getCheckedItemPositions()); 5369 }}); 5370 b.setNegativeButton(android.R.string.cancel, 5371 new DialogInterface.OnClickListener() { 5372 public void onClick(DialogInterface dialog, int which) { 5373 mWebViewCore.sendMessage( 5374 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5375 }}); 5376 } 5377 final AlertDialog dialog = b.create(); 5378 listView.setAdapter(adapter); 5379 listView.setFocusableInTouchMode(true); 5380 // There is a bug (1250103) where the checks in a ListView with 5381 // multiple items selected are associated with the positions, not 5382 // the ids, so the items do not properly retain their checks when 5383 // filtered. Do not allow filtering on multiple lists until 5384 // that bug is fixed. 5385 5386 listView.setTextFilterEnabled(!mMultiple); 5387 if (mMultiple) { 5388 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 5389 int length = mSelectedArray.length; 5390 for (int i = 0; i < length; i++) { 5391 listView.setItemChecked(mSelectedArray[i], true); 5392 } 5393 } else { 5394 listView.setOnItemClickListener(new OnItemClickListener() { 5395 public void onItemClick(AdapterView parent, View v, 5396 int position, long id) { 5397 mWebViewCore.sendMessage( 5398 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 5399 dialog.dismiss(); 5400 } 5401 }); 5402 if (mSelection != -1) { 5403 listView.setSelection(mSelection); 5404 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 5405 listView.setItemChecked(mSelection, true); 5406 DataSetObserver observer = new SingleDataSetObserver( 5407 adapter.getItemId(mSelection), listView, adapter); 5408 adapter.registerDataSetObserver(observer); 5409 } 5410 } 5411 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 5412 public void onCancel(DialogInterface dialog) { 5413 mWebViewCore.sendMessage( 5414 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 5415 } 5416 }); 5417 dialog.show(); 5418 } 5419 } 5420 5421 /* 5422 * Request a dropdown menu for a listbox with multiple selection. 5423 * 5424 * @param array Labels for the listbox. 5425 * @param enabledArray Which positions are enabled. 5426 * @param selectedArray Which positions are initally selected. 5427 */ 5428 void requestListBox(String[] array, boolean[]enabledArray, int[] 5429 selectedArray) { 5430 mPrivateHandler.post( 5431 new InvokeListBox(array, enabledArray, selectedArray)); 5432 } 5433 5434 /* 5435 * Request a dropdown menu for a listbox with single selection or a single 5436 * <select> element. 5437 * 5438 * @param array Labels for the listbox. 5439 * @param enabledArray Which positions are enabled. 5440 * @param selection Which position is initally selected. 5441 */ 5442 void requestListBox(String[] array, boolean[]enabledArray, int selection) { 5443 mPrivateHandler.post( 5444 new InvokeListBox(array, enabledArray, selection)); 5445 } 5446 5447 // called by JNI 5448 private void sendMoveMouse(int frame, int node, int x, int y) { 5449 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 5450 new WebViewCore.CursorData(frame, node, x, y)); 5451 } 5452 5453 /* 5454 * Send a mouse move event to the webcore thread. 5455 * 5456 * @param removeFocus Pass true if the "mouse" cursor is now over a node 5457 * which wants key events, but it is not the focus. This 5458 * will make the visual appear as though nothing is in 5459 * focus. Remove the WebTextView, if present, and stop 5460 * drawing the blinking caret. 5461 * called by JNI 5462 */ 5463 private void sendMoveMouseIfLatest(boolean removeFocus) { 5464 if (removeFocus) { 5465 clearTextEntry(); 5466 setFocusControllerInactive(); 5467 } 5468 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 5469 cursorData()); 5470 } 5471 5472 // called by JNI 5473 private void sendMotionUp(int touchGeneration, 5474 int frame, int node, int x, int y) { 5475 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5476 touchUpData.mMoveGeneration = touchGeneration; 5477 touchUpData.mFrame = frame; 5478 touchUpData.mNode = node; 5479 touchUpData.mX = x; 5480 touchUpData.mY = y; 5481 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5482 } 5483 5484 5485 private int getScaledMaxXScroll() { 5486 int width; 5487 if (mHeightCanMeasure == false) { 5488 width = getViewWidth() / 4; 5489 } else { 5490 Rect visRect = new Rect(); 5491 calcOurVisibleRect(visRect); 5492 width = visRect.width() / 2; 5493 } 5494 // FIXME the divisor should be retrieved from somewhere 5495 return viewToContent(width); 5496 } 5497 5498 private int getScaledMaxYScroll() { 5499 int height; 5500 if (mHeightCanMeasure == false) { 5501 height = getViewHeight() / 4; 5502 } else { 5503 Rect visRect = new Rect(); 5504 calcOurVisibleRect(visRect); 5505 height = visRect.height() / 2; 5506 } 5507 // FIXME the divisor should be retrieved from somewhere 5508 // the closest thing today is hard-coded into ScrollView.java 5509 // (from ScrollView.java, line 363) int maxJump = height/2; 5510 return viewToContent(height); 5511 } 5512 5513 /** 5514 * Called by JNI to invalidate view 5515 */ 5516 private void viewInvalidate() { 5517 invalidate(); 5518 } 5519 5520 // return true if the key was handled 5521 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 5522 long time, boolean ignorePlugin) { 5523 if (mNativeClass == 0) { 5524 return false; 5525 } 5526 if (ignorePlugin == false && nativePluginEatsNavKey()) { 5527 KeyEvent event = new KeyEvent(time, time, KeyEvent.ACTION_DOWN 5528 , keyCode, count, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 5529 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 5530 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 5531 , 0, 0, 0); 5532 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5533 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5534 return true; 5535 } 5536 mLastCursorTime = time; 5537 mLastCursorBounds = nativeGetCursorRingBounds(); 5538 boolean keyHandled 5539 = nativeMoveCursor(keyCode, count, noScroll) == false; 5540 if (DebugFlags.WEB_VIEW) { 5541 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 5542 + " mLastCursorTime=" + mLastCursorTime 5543 + " handled=" + keyHandled); 5544 } 5545 if (keyHandled == false || mHeightCanMeasure == false) { 5546 return keyHandled; 5547 } 5548 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 5549 if (contentCursorRingBounds.isEmpty()) return keyHandled; 5550 Rect viewCursorRingBounds = contentToView(contentCursorRingBounds); 5551 Rect visRect = new Rect(); 5552 calcOurVisibleRect(visRect); 5553 Rect outset = new Rect(visRect); 5554 int maxXScroll = visRect.width() / 2; 5555 int maxYScroll = visRect.height() / 2; 5556 outset.inset(-maxXScroll, -maxYScroll); 5557 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 5558 return keyHandled; 5559 } 5560 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 5561 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 5562 maxXScroll); 5563 if (maxH > 0) { 5564 pinScrollBy(maxH, 0, true, 0); 5565 } else { 5566 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 5567 -maxXScroll); 5568 if (maxH < 0) { 5569 pinScrollBy(maxH, 0, true, 0); 5570 } 5571 } 5572 if (mLastCursorBounds.isEmpty()) return keyHandled; 5573 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 5574 return keyHandled; 5575 } 5576 if (DebugFlags.WEB_VIEW) { 5577 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 5578 + contentCursorRingBounds); 5579 } 5580 requestRectangleOnScreen(viewCursorRingBounds); 5581 mUserScroll = true; 5582 return keyHandled; 5583 } 5584 5585 /** 5586 * Set the background color. It's white by default. Pass 5587 * zero to make the view transparent. 5588 * @param color the ARGB color described by Color.java 5589 */ 5590 public void setBackgroundColor(int color) { 5591 mBackgroundColor = color; 5592 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 5593 } 5594 5595 public void debugDump() { 5596 nativeDebugDump(); 5597 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 5598 } 5599 5600 /** 5601 * Update our cache with updatedText. 5602 * @param updatedText The new text to put in our cache. 5603 */ 5604 /* package */ void updateCachedTextfield(String updatedText) { 5605 // Also place our generation number so that when we look at the cache 5606 // we recognize that it is up to date. 5607 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 5608 } 5609 5610 /* package */ native void nativeClearCursor(); 5611 private native void nativeCreate(int ptr); 5612 private native int nativeCursorFramePointer(); 5613 private native Rect nativeCursorNodeBounds(); 5614 /* package */ native int nativeCursorNodePointer(); 5615 /* package */ native boolean nativeCursorMatchesFocus(); 5616 private native boolean nativeCursorIntersects(Rect visibleRect); 5617 private native boolean nativeCursorIsAnchor(); 5618 private native boolean nativeCursorIsPlugin(); 5619 private native boolean nativeCursorIsTextInput(); 5620 private native Point nativeCursorPosition(); 5621 private native String nativeCursorText(); 5622 /** 5623 * Returns true if the native cursor node says it wants to handle key events 5624 * (ala plugins). This can only be called if mNativeClass is non-zero! 5625 */ 5626 private native boolean nativeCursorWantsKeyEvents(); 5627 private native void nativeDebugDump(); 5628 private native void nativeDestroy(); 5629 private native void nativeDrawCursorRing(Canvas content); 5630 private native void nativeDrawMatches(Canvas canvas); 5631 private native void nativeDrawSelection(Canvas content 5632 , int x, int y, boolean extendSelection); 5633 private native void nativeDrawSelectionRegion(Canvas content); 5634 private native void nativeDumpDisplayTree(String urlOrNull); 5635 private native int nativeFindAll(String findLower, String findUpper); 5636 private native void nativeFindNext(boolean forward); 5637 private native boolean nativeFocusCandidateIsPassword(); 5638 private native boolean nativeFocusCandidateIsRtlText(); 5639 private native boolean nativeFocusCandidateIsTextField(); 5640 private native boolean nativeFocusCandidateIsTextInput(); 5641 private native int nativeFocusCandidateMaxLength(); 5642 /* package */ native String nativeFocusCandidateName(); 5643 private native Rect nativeFocusCandidateNodeBounds(); 5644 /* package */ native int nativeFocusCandidatePointer(); 5645 private native String nativeFocusCandidateText(); 5646 private native int nativeFocusCandidateTextSize(); 5647 /* package */ native int nativeFocusNodePointer(); 5648 private native Rect nativeGetCursorRingBounds(); 5649 private native Region nativeGetSelection(); 5650 private native boolean nativeHasCursorNode(); 5651 private native boolean nativeHasFocusNode(); 5652 private native void nativeHideCursor(); 5653 private native String nativeImageURI(int x, int y); 5654 private native void nativeInstrumentReport(); 5655 /* package */ native void nativeMoveCursorToNextTextInput(); 5656 // return true if the page has been scrolled 5657 private native boolean nativeMotionUp(int x, int y, int slop); 5658 // returns false if it handled the key 5659 private native boolean nativeMoveCursor(int keyCode, int count, 5660 boolean noScroll); 5661 private native int nativeMoveGeneration(); 5662 private native void nativeMoveSelection(int x, int y, 5663 boolean extendSelection); 5664 private native boolean nativePluginEatsNavKey(); 5665 // Like many other of our native methods, you must make sure that 5666 // mNativeClass is not null before calling this method. 5667 private native void nativeRecordButtons(boolean focused, 5668 boolean pressed, boolean invalidate); 5669 private native void nativeSelectBestAt(Rect rect); 5670 private native void nativeSetFindIsDown(); 5671 private native void nativeSetFollowedLink(boolean followed); 5672 private native void nativeSetHeightCanMeasure(boolean measure); 5673 // Returns a value corresponding to CachedFrame::ImeAction 5674 /* package */ native int nativeTextFieldAction(); 5675 /** 5676 * Perform a click on a currently focused text input. Since it is already 5677 * focused, there is no need to go through the nativeMotionUp code, which 5678 * may change the Cursor. 5679 */ 5680 private native void nativeTextInputMotionUp(int x, int y); 5681 private native int nativeTextGeneration(); 5682 // Never call this version except by updateCachedTextfield(String) - 5683 // we always want to pass in our generation number. 5684 private native void nativeUpdateCachedTextfield(String updatedText, 5685 int generation); 5686 private native void nativeUpdatePluginReceivesEvents(); 5687 // return NO_LEFTEDGE means failure. 5688 private static final int NO_LEFTEDGE = -1; 5689 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 5690} 5691