WebView.java revision dba8cb76371960457e91b31fa396478f809a5a34
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.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.Context; 22import android.content.DialogInterface; 23import android.content.Intent; 24import android.content.DialogInterface.OnCancelListener; 25import android.content.pm.PackageManager; 26import android.database.DataSetObserver; 27import android.graphics.Bitmap; 28import android.graphics.BitmapFactory; 29import android.graphics.BitmapShader; 30import android.graphics.Canvas; 31import android.graphics.Color; 32import android.graphics.Interpolator; 33import android.graphics.Paint; 34import android.graphics.Picture; 35import android.graphics.Point; 36import android.graphics.Rect; 37import android.graphics.Region; 38import android.graphics.Shader; 39import android.graphics.drawable.Drawable; 40import android.net.http.SslCertificate; 41import android.net.Uri; 42import android.os.Bundle; 43import android.os.Handler; 44import android.os.Message; 45import android.os.ServiceManager; 46import android.os.SystemClock; 47import android.text.IClipboard; 48import android.text.Selection; 49import android.text.Spannable; 50import android.util.AttributeSet; 51import android.util.EventLog; 52import android.util.Log; 53import android.util.TypedValue; 54import android.view.Gravity; 55import android.view.KeyEvent; 56import android.view.LayoutInflater; 57import android.view.MotionEvent; 58import android.view.ScaleGestureDetector; 59import android.view.SoundEffectConstants; 60import android.view.VelocityTracker; 61import android.view.View; 62import android.view.ViewConfiguration; 63import android.view.ViewGroup; 64import android.view.ViewTreeObserver; 65import android.view.animation.AlphaAnimation; 66import android.view.inputmethod.EditorInfo; 67import android.view.inputmethod.InputConnection; 68import android.view.inputmethod.InputMethodManager; 69import android.webkit.WebTextView.AutoCompleteAdapter; 70import android.webkit.WebViewCore.EventHub; 71import android.webkit.WebViewCore.TouchEventData; 72import android.widget.AbsoluteLayout; 73import android.widget.Adapter; 74import android.widget.AdapterView; 75import android.widget.ArrayAdapter; 76import android.widget.CheckedTextView; 77import android.widget.FrameLayout; 78import android.widget.LinearLayout; 79import android.widget.ListView; 80import android.widget.OverScroller; 81import android.widget.Toast; 82import android.widget.ZoomButtonsController; 83import android.widget.ZoomControls; 84import android.widget.AdapterView.OnItemClickListener; 85 86import java.io.File; 87import java.io.FileInputStream; 88import java.io.FileNotFoundException; 89import java.io.FileOutputStream; 90import java.io.IOException; 91import java.net.URLDecoder; 92import java.util.ArrayList; 93import java.util.List; 94import java.util.HashMap; 95import java.util.Map; 96import java.util.Set; 97 98import junit.framework.Assert; 99 100/** 101 * <p>A View that displays web pages. This class is the basis upon which you 102 * can roll your own web browser or simply display some online content within your Activity. 103 * It uses the WebKit rendering engine to display 104 * web pages and includes methods to navigate forward and backward 105 * through a history, zoom in and out, perform text searches and more.</p> 106 * <p>To enable the built-in zoom, set 107 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 108 * (introduced in API version 3). 109 * <p>Note that, in order for your Activity to access the Internet and load web pages 110 * in a WebView, you must add the <var>INTERNET</var> permissions to your 111 * Android Manifest file:</p> 112 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 113 * 114 * <p>This must be a child of the <code><manifest></code> element.</p> 115 * 116 * <h3>Basic usage</h3> 117 * 118 * <p>By default, a WebView provides no browser-like widgets, does not 119 * enable JavaScript and errors will be ignored. If your goal is only 120 * to display some HTML as a part of your UI, this is probably fine; 121 * the user won't need to interact with the web page beyond reading 122 * it, and the web page won't need to interact with the user. If you 123 * actually want a fully blown web browser, then you probably want to 124 * invoke the Browser application with your URL rather than show it 125 * with a WebView. See {@link android.content.Intent} for more information.</p> 126 * 127 * <pre class="prettyprint"> 128 * WebView webview = new WebView(this); 129 * setContentView(webview); 130 * 131 * // Simplest usage: note that an exception will NOT be thrown 132 * // if there is an error loading this page (see below). 133 * webview.loadUrl("http://slashdot.org/"); 134 * 135 * // Of course you can also load from any string: 136 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 137 * webview.loadData(summary, "text/html", "utf-8"); 138 * // ... although note that there are restrictions on what this HTML can do. 139 * // See the JavaDocs for loadData and loadDataWithBaseUrl for more info. 140 * </pre> 141 * 142 * <p>A WebView has several customization points where you can add your 143 * own behavior. These are:</p> 144 * 145 * <ul> 146 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 147 * This class is called when something that might impact a 148 * browser UI happens, for instance, progress updates and 149 * JavaScript alerts are sent here. 150 * </li> 151 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 152 * It will be called when things happen that impact the 153 * rendering of the content, eg, errors or form submissions. You 154 * can also intercept URL loading here.</li> 155 * <li>Via the {@link android.webkit.WebSettings} class, which contains 156 * miscellaneous configuration. </li> 157 * <li>With the {@link android.webkit.WebView#addJavascriptInterface} method. 158 * This lets you bind Java objects into the WebView so they can be 159 * controlled from the web pages JavaScript.</li> 160 * </ul> 161 * 162 * <p>Here's a more complicated example, showing error handling, 163 * settings, and progress notification:</p> 164 * 165 * <pre class="prettyprint"> 166 * // Let's display the progress in the activity title bar, like the 167 * // browser app does. 168 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 169 * 170 * webview.getSettings().setJavaScriptEnabled(true); 171 * 172 * final Activity activity = this; 173 * webview.setWebChromeClient(new WebChromeClient() { 174 * public void onProgressChanged(WebView view, int progress) { 175 * // Activities and WebViews measure progress with different scales. 176 * // The progress meter will automatically disappear when we reach 100% 177 * activity.setProgress(progress * 1000); 178 * } 179 * }); 180 * webview.setWebViewClient(new WebViewClient() { 181 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 182 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 183 * } 184 * }); 185 * 186 * webview.loadUrl("http://slashdot.org/"); 187 * </pre> 188 * 189 * <h3>Cookie and window management</h3> 190 * 191 * <p>For obvious security reasons, your application has its own 192 * cache, cookie store etc - it does not share the Browser 193 * applications data. Cookies are managed on a separate thread, so 194 * operations like index building don't block the UI 195 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 196 * if you want to use cookies in your application. 197 * </p> 198 * 199 * <p>By default, requests by the HTML to open new windows are 200 * ignored. This is true whether they be opened by JavaScript or by 201 * the target attribute on a link. You can customize your 202 * WebChromeClient to provide your own behaviour for opening multiple windows, 203 * and render them in whatever manner you want.</p> 204 * 205 * <p>Standard behavior for an Activity is to be destroyed and 206 * recreated when the devices orientation is changed. This will cause 207 * the WebView to reload the current page. If you don't want that, you 208 * can set your Activity to handle the orientation and keyboardHidden 209 * changes, and then just leave the WebView alone. It'll automatically 210 * re-orient itself as appropriate.</p> 211 */ 212@Widget 213public class WebView extends AbsoluteLayout 214 implements ViewTreeObserver.OnGlobalFocusChangeListener, 215 ViewGroup.OnHierarchyChangeListener { 216 217 // enable debug output for drag trackers 218 private static final boolean DEBUG_DRAG_TRACKER = false; 219 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 220 // the screen all-the-time. Good for profiling our drawing code 221 static private final boolean AUTO_REDRAW_HACK = false; 222 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 223 private boolean mAutoRedraw; 224 225 static final String LOGTAG = "webview"; 226 227 private static class ExtendedZoomControls extends FrameLayout { 228 public ExtendedZoomControls(Context context, AttributeSet attrs) { 229 super(context, attrs); 230 LayoutInflater inflater = (LayoutInflater) 231 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 232 inflater.inflate(com.android.internal.R.layout.zoom_magnify, this, true); 233 mPlusMinusZoomControls = (ZoomControls) findViewById( 234 com.android.internal.R.id.zoomControls); 235 findViewById(com.android.internal.R.id.zoomMagnify).setVisibility( 236 View.GONE); 237 } 238 239 public void show(boolean showZoom, boolean canZoomOut) { 240 mPlusMinusZoomControls.setVisibility( 241 showZoom ? View.VISIBLE : View.GONE); 242 fade(View.VISIBLE, 0.0f, 1.0f); 243 } 244 245 public void hide() { 246 fade(View.GONE, 1.0f, 0.0f); 247 } 248 249 private void fade(int visibility, float startAlpha, float endAlpha) { 250 AlphaAnimation anim = new AlphaAnimation(startAlpha, endAlpha); 251 anim.setDuration(500); 252 startAnimation(anim); 253 setVisibility(visibility); 254 } 255 256 public boolean hasFocus() { 257 return mPlusMinusZoomControls.hasFocus(); 258 } 259 260 public void setOnZoomInClickListener(OnClickListener listener) { 261 mPlusMinusZoomControls.setOnZoomInClickListener(listener); 262 } 263 264 public void setOnZoomOutClickListener(OnClickListener listener) { 265 mPlusMinusZoomControls.setOnZoomOutClickListener(listener); 266 } 267 268 ZoomControls mPlusMinusZoomControls; 269 } 270 271 /** 272 * Transportation object for returning WebView across thread boundaries. 273 */ 274 public class WebViewTransport { 275 private WebView mWebview; 276 277 /** 278 * Set the WebView to the transportation object. 279 * @param webview The WebView to transport. 280 */ 281 public synchronized void setWebView(WebView webview) { 282 mWebview = webview; 283 } 284 285 /** 286 * Return the WebView object. 287 * @return WebView The transported WebView object. 288 */ 289 public synchronized WebView getWebView() { 290 return mWebview; 291 } 292 } 293 294 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 295 private final CallbackProxy mCallbackProxy; 296 297 private final WebViewDatabase mDatabase; 298 299 // SSL certificate for the main top-level page (if secure) 300 private SslCertificate mCertificate; 301 302 // Native WebView pointer that is 0 until the native object has been 303 // created. 304 private int mNativeClass; 305 // This would be final but it needs to be set to null when the WebView is 306 // destroyed. 307 private WebViewCore mWebViewCore; 308 // Handler for dispatching UI messages. 309 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 310 private WebTextView mWebTextView; 311 // Used to ignore changes to webkit text that arrives to the UI side after 312 // more key events. 313 private int mTextGeneration; 314 315 // Used by WebViewCore to create child views. 316 /* package */ final ViewManager mViewManager; 317 318 // Used to display in full screen mode 319 PluginFullScreenHolder mFullScreenHolder; 320 321 /** 322 * Position of the last touch event. 323 */ 324 private float mLastTouchX; 325 private float mLastTouchY; 326 327 /** 328 * Time of the last touch event. 329 */ 330 private long mLastTouchTime; 331 332 /** 333 * Time of the last time sending touch event to WebViewCore 334 */ 335 private long mLastSentTouchTime; 336 337 /** 338 * The minimum elapsed time before sending another ACTION_MOVE event to 339 * WebViewCore. This really should be tuned for each type of the devices. 340 * For example in Google Map api test case, it takes Dream device at least 341 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 342 * triggering the layout and drawing the picture. While the same process 343 * takes 60+ms on the current high speed device. If we make 344 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 345 * to WebViewCore queue and the real layout and draw events will be pushed 346 * to further, which slows down the refresh rate. Choose 50 to favor the 347 * current high speed devices. For Dream like devices, 100 is a better 348 * choice. Maybe make this in the buildspec later. 349 */ 350 private static final int TOUCH_SENT_INTERVAL = 50; 351 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 352 353 /** 354 * Helper class to get velocity for fling 355 */ 356 VelocityTracker mVelocityTracker; 357 private int mMaximumFling; 358 private float mLastVelocity; 359 private float mLastVelX; 360 private float mLastVelY; 361 362 /** 363 * Touch mode 364 */ 365 private int mTouchMode = TOUCH_DONE_MODE; 366 private static final int TOUCH_INIT_MODE = 1; 367 private static final int TOUCH_DRAG_START_MODE = 2; 368 private static final int TOUCH_DRAG_MODE = 3; 369 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 370 private static final int TOUCH_SHORTPRESS_MODE = 5; 371 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 372 private static final int TOUCH_DONE_MODE = 7; 373 private static final int TOUCH_SELECT_MODE = 8; 374 private static final int TOUCH_PINCH_DRAG = 9; 375 376 // Whether to forward the touch events to WebCore 377 private boolean mForwardTouchEvents = false; 378 379 // Whether to prevent default during touch. The initial value depends on 380 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 381 // for touch down. Otherwise UI will wait for the answer of the first 382 // confirmed move before taking over the control. 383 private static final int PREVENT_DEFAULT_NO = 0; 384 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 385 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 386 private static final int PREVENT_DEFAULT_YES = 3; 387 private static final int PREVENT_DEFAULT_IGNORE = 4; 388 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 389 390 // true when the touch movement exceeds the slop 391 private boolean mConfirmMove; 392 393 // if true, touch events will be first processed by WebCore, if prevent 394 // default is not set, the UI will continue handle them. 395 private boolean mDeferTouchProcess; 396 397 // to avoid interfering with the current touch events, track them 398 // separately. Currently no snapping or fling in the deferred process mode 399 private int mDeferTouchMode = TOUCH_DONE_MODE; 400 private float mLastDeferTouchX; 401 private float mLastDeferTouchY; 402 403 // To keep track of whether the current drag was initiated by a WebTextView, 404 // so that we know not to hide the cursor 405 boolean mDragFromTextInput; 406 407 // Whether or not to draw the cursor ring. 408 private boolean mDrawCursorRing = true; 409 410 // true if onPause has been called (and not onResume) 411 private boolean mIsPaused; 412 413 /** 414 * Customizable constant 415 */ 416 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 417 private int mTouchSlopSquare; 418 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 419 private int mDoubleTapSlopSquare; 420 // pre-computed density adjusted navigation slop 421 private int mNavSlop; 422 // This should be ViewConfiguration.getTapTimeout() 423 // But system time out is 100ms, which is too short for the browser. 424 // In the browser, if it switches out of tap too soon, jump tap won't work. 425 private static final int TAP_TIMEOUT = 200; 426 // This should be ViewConfiguration.getLongPressTimeout() 427 // But system time out is 500ms, which is too short for the browser. 428 // With a short timeout, it's difficult to treat trigger a short press. 429 private static final int LONG_PRESS_TIMEOUT = 1000; 430 // needed to avoid flinging after a pause of no movement 431 private static final int MIN_FLING_TIME = 250; 432 // draw unfiltered after drag is held without movement 433 private static final int MOTIONLESS_TIME = 100; 434 // The time that the Zoom Controls are visible before fading away 435 private static final long ZOOM_CONTROLS_TIMEOUT = 436 ViewConfiguration.getZoomControlsTimeout(); 437 // The amount of content to overlap between two screens when going through 438 // pages with the space bar, in pixels. 439 private static final int PAGE_SCROLL_OVERLAP = 24; 440 441 /** 442 * These prevent calling requestLayout if either dimension is fixed. This 443 * depends on the layout parameters and the measure specs. 444 */ 445 boolean mWidthCanMeasure; 446 boolean mHeightCanMeasure; 447 448 // Remember the last dimensions we sent to the native side so we can avoid 449 // sending the same dimensions more than once. 450 int mLastWidthSent; 451 int mLastHeightSent; 452 453 private int mContentWidth; // cache of value from WebViewCore 454 private int mContentHeight; // cache of value from WebViewCore 455 456 // Need to have the separate control for horizontal and vertical scrollbar 457 // style than the View's single scrollbar style 458 private boolean mOverlayHorizontalScrollbar = true; 459 private boolean mOverlayVerticalScrollbar = false; 460 461 // our standard speed. this way small distances will be traversed in less 462 // time than large distances, but we cap the duration, so that very large 463 // distances won't take too long to get there. 464 private static final int STD_SPEED = 480; // pixels per second 465 // time for the longest scroll animation 466 private static final int MAX_DURATION = 750; // milliseconds 467 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 468 private OverScroller mScroller; 469 private boolean mInOverScrollMode = false; 470 private static Paint mOverScrollBackground; 471 472 private boolean mWrapContent; 473 private static final int MOTIONLESS_FALSE = 0; 474 private static final int MOTIONLESS_PENDING = 1; 475 private static final int MOTIONLESS_TRUE = 2; 476 private int mHeldMotionless; 477 478 // whether support multi-touch 479 private boolean mSupportMultiTouch; 480 // use the framework's ScaleGestureDetector to handle multi-touch 481 private ScaleGestureDetector mScaleDetector; 482 483 // the anchor point in the document space where VIEW_SIZE_CHANGED should 484 // apply to 485 private int mAnchorX; 486 private int mAnchorY; 487 488 /* 489 * Private message ids 490 */ 491 private static final int REMEMBER_PASSWORD = 1; 492 private static final int NEVER_REMEMBER_PASSWORD = 2; 493 private static final int SWITCH_TO_SHORTPRESS = 3; 494 private static final int SWITCH_TO_LONGPRESS = 4; 495 private static final int RELEASE_SINGLE_TAP = 5; 496 private static final int REQUEST_FORM_DATA = 6; 497 private static final int RESUME_WEBCORE_PRIORITY = 7; 498 private static final int DRAG_HELD_MOTIONLESS = 8; 499 private static final int AWAKEN_SCROLL_BARS = 9; 500 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 501 502 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 503 private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT; 504 505 /* 506 * Package message ids 507 */ 508 //! arg1=x, arg2=y 509 static final int SCROLL_TO_MSG_ID = 101; 510 static final int SCROLL_BY_MSG_ID = 102; 511 //! arg1=x, arg2=y 512 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 513 //! arg1=x, arg2=y 514 static final int SYNC_SCROLL_TO_MSG_ID = 104; 515 static final int NEW_PICTURE_MSG_ID = 105; 516 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 517 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 518 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 519 static final int UPDATE_ZOOM_RANGE = 109; 520 static final int MOVE_OUT_OF_PLUGIN = 110; 521 static final int CLEAR_TEXT_ENTRY = 111; 522 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 523 static final int SHOW_RECT_MSG_ID = 113; 524 static final int LONG_PRESS_CENTER = 114; 525 static final int PREVENT_TOUCH_ID = 115; 526 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 527 // obj=Rect in doc coordinates 528 static final int INVAL_RECT_MSG_ID = 117; 529 static final int REQUEST_KEYBOARD = 118; 530 static final int DO_MOTION_UP = 119; 531 static final int SHOW_FULLSCREEN = 120; 532 static final int HIDE_FULLSCREEN = 121; 533 static final int DOM_FOCUS_CHANGED = 122; 534 static final int IMMEDIATE_REPAINT_MSG_ID = 123; 535 static final int SET_ROOT_LAYER_MSG_ID = 124; 536 static final int RETURN_LABEL = 125; 537 static final int FIND_AGAIN = 126; 538 static final int CENTER_FIT_RECT = 127; 539 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 540 541 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 542 private static final int LAST_PACKAGE_MSG_ID 543 = REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID; 544 545 static final String[] HandlerPrivateDebugString = { 546 "REMEMBER_PASSWORD", // = 1; 547 "NEVER_REMEMBER_PASSWORD", // = 2; 548 "SWITCH_TO_SHORTPRESS", // = 3; 549 "SWITCH_TO_LONGPRESS", // = 4; 550 "RELEASE_SINGLE_TAP", // = 5; 551 "REQUEST_FORM_DATA", // = 6; 552 "RESUME_WEBCORE_PRIORITY", // = 7; 553 "DRAG_HELD_MOTIONLESS", // = 8; 554 "AWAKEN_SCROLL_BARS", // = 9; 555 "PREVENT_DEFAULT_TIMEOUT" // = 10; 556 }; 557 558 static final String[] HandlerPackageDebugString = { 559 "SCROLL_TO_MSG_ID", // = 101; 560 "SCROLL_BY_MSG_ID", // = 102; 561 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 562 "SYNC_SCROLL_TO_MSG_ID", // = 104; 563 "NEW_PICTURE_MSG_ID", // = 105; 564 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 565 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 566 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 567 "UPDATE_ZOOM_RANGE", // = 109; 568 "MOVE_OUT_OF_PLUGIN", // = 110; 569 "CLEAR_TEXT_ENTRY", // = 111; 570 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 571 "SHOW_RECT_MSG_ID", // = 113; 572 "LONG_PRESS_CENTER", // = 114; 573 "PREVENT_TOUCH_ID", // = 115; 574 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 575 "INVAL_RECT_MSG_ID", // = 117; 576 "REQUEST_KEYBOARD", // = 118; 577 "DO_MOTION_UP", // = 119; 578 "SHOW_FULLSCREEN", // = 120; 579 "HIDE_FULLSCREEN", // = 121; 580 "DOM_FOCUS_CHANGED", // = 122; 581 "IMMEDIATE_REPAINT_MSG_ID", // = 123; 582 "SET_ROOT_LAYER_MSG_ID", // = 124; 583 "RETURN_LABEL", // = 125; 584 "FIND_AGAIN", // = 126; 585 "CENTER_FIT_RECT", // = 127; 586 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID" // = 128; 587 }; 588 589 // If the site doesn't use the viewport meta tag to specify the viewport, 590 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 591 static final int DEFAULT_VIEWPORT_WIDTH = 800; 592 593 // normally we try to fit the content to the minimum preferred width 594 // calculated by the Webkit. To avoid the bad behavior when some site's 595 // minimum preferred width keeps growing when changing the viewport width or 596 // the minimum preferred width is huge, an upper limit is needed. 597 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 598 599 // default scale limit. Depending on the display density 600 private static float DEFAULT_MAX_ZOOM_SCALE; 601 private static float DEFAULT_MIN_ZOOM_SCALE; 602 // scale limit, which can be set through viewport meta tag in the web page 603 private float mMaxZoomScale; 604 private float mMinZoomScale; 605 private boolean mMinZoomScaleFixed = true; 606 607 // initial scale in percent. 0 means using default. 608 private int mInitialScaleInPercent = 0; 609 610 // while in the zoom overview mode, the page's width is fully fit to the 611 // current window. The page is alive, in another words, you can click to 612 // follow the links. Double tap will toggle between zoom overview mode and 613 // the last zoom scale. 614 boolean mInZoomOverview = false; 615 616 // ideally mZoomOverviewWidth should be mContentWidth. But sites like espn, 617 // engadget always have wider mContentWidth no matter what viewport size is. 618 int mZoomOverviewWidth = DEFAULT_VIEWPORT_WIDTH; 619 float mTextWrapScale; 620 621 // default scale. Depending on the display density. 622 static int DEFAULT_SCALE_PERCENT; 623 private float mDefaultScale; 624 625 private static float MINIMUM_SCALE_INCREMENT = 0.01f; 626 627 // set to true temporarily during ScaleGesture triggered zoom 628 private boolean mPreviewZoomOnly = false; 629 630 // computed scale and inverse, from mZoomWidth. 631 private float mActualScale; 632 private float mInvActualScale; 633 // if this is non-zero, it is used on drawing rather than mActualScale 634 private float mZoomScale; 635 private float mInvInitialZoomScale; 636 private float mInvFinalZoomScale; 637 private int mInitialScrollX; 638 private int mInitialScrollY; 639 private long mZoomStart; 640 private static final int ZOOM_ANIMATION_LENGTH = 500; 641 642 private boolean mUserScroll = false; 643 644 private int mSnapScrollMode = SNAP_NONE; 645 private static final int SNAP_NONE = 0; 646 private static final int SNAP_LOCK = 1; // not a separate state 647 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 648 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 649 private boolean mSnapPositive; 650 651 // keep these in sync with their counterparts in WebView.cpp 652 private static final int DRAW_EXTRAS_NONE = 0; 653 private static final int DRAW_EXTRAS_FIND = 1; 654 private static final int DRAW_EXTRAS_SELECTION = 2; 655 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 656 657 // Used to match key downs and key ups 658 private boolean mGotKeyDown; 659 660 /* package */ static boolean mLogEvent = true; 661 662 // for event log 663 private long mLastTouchUpTime = 0; 664 665 /** 666 * URI scheme for telephone number 667 */ 668 public static final String SCHEME_TEL = "tel:"; 669 /** 670 * URI scheme for email address 671 */ 672 public static final String SCHEME_MAILTO = "mailto:"; 673 /** 674 * URI scheme for map address 675 */ 676 public static final String SCHEME_GEO = "geo:0,0?q="; 677 678 private int mBackgroundColor = Color.WHITE; 679 680 // Used to notify listeners of a new picture. 681 private PictureListener mPictureListener; 682 /** 683 * Interface to listen for new pictures as they change. 684 */ 685 public interface PictureListener { 686 /** 687 * Notify the listener that the picture has changed. 688 * @param view The WebView that owns the picture. 689 * @param picture The new picture. 690 */ 691 public void onNewPicture(WebView view, Picture picture); 692 } 693 694 // FIXME: Want to make this public, but need to change the API file. 695 public /*static*/ class HitTestResult { 696 /** 697 * Default HitTestResult, where the target is unknown 698 */ 699 public static final int UNKNOWN_TYPE = 0; 700 /** 701 * HitTestResult for hitting a HTML::a tag 702 */ 703 public static final int ANCHOR_TYPE = 1; 704 /** 705 * HitTestResult for hitting a phone number 706 */ 707 public static final int PHONE_TYPE = 2; 708 /** 709 * HitTestResult for hitting a map address 710 */ 711 public static final int GEO_TYPE = 3; 712 /** 713 * HitTestResult for hitting an email address 714 */ 715 public static final int EMAIL_TYPE = 4; 716 /** 717 * HitTestResult for hitting an HTML::img tag 718 */ 719 public static final int IMAGE_TYPE = 5; 720 /** 721 * HitTestResult for hitting a HTML::a tag which contains HTML::img 722 */ 723 public static final int IMAGE_ANCHOR_TYPE = 6; 724 /** 725 * HitTestResult for hitting a HTML::a tag with src=http 726 */ 727 public static final int SRC_ANCHOR_TYPE = 7; 728 /** 729 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 730 */ 731 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 732 /** 733 * HitTestResult for hitting an edit text area 734 */ 735 public static final int EDIT_TEXT_TYPE = 9; 736 737 private int mType; 738 private String mExtra; 739 740 HitTestResult() { 741 mType = UNKNOWN_TYPE; 742 } 743 744 private void setType(int type) { 745 mType = type; 746 } 747 748 private void setExtra(String extra) { 749 mExtra = extra; 750 } 751 752 public int getType() { 753 return mType; 754 } 755 756 public String getExtra() { 757 return mExtra; 758 } 759 } 760 761 // The View containing the zoom controls 762 private ExtendedZoomControls mZoomControls; 763 private Runnable mZoomControlRunnable; 764 765 private ZoomButtonsController mZoomButtonsController; 766 767 // These keep track of the center point of the zoom. They are used to 768 // determine the point around which we should zoom. 769 private float mZoomCenterX; 770 private float mZoomCenterY; 771 772 private ZoomButtonsController.OnZoomListener mZoomListener = 773 new ZoomButtonsController.OnZoomListener() { 774 775 public void onVisibilityChanged(boolean visible) { 776 if (visible) { 777 switchOutDrawHistory(); 778 // Bring back the hidden zoom controls. 779 mZoomButtonsController.getZoomControls().setVisibility( 780 View.VISIBLE); 781 updateZoomButtonsEnabled(); 782 } 783 } 784 785 public void onZoom(boolean zoomIn) { 786 if (zoomIn) { 787 zoomIn(); 788 } else { 789 zoomOut(); 790 } 791 792 updateZoomButtonsEnabled(); 793 } 794 }; 795 796 /** 797 * Construct a new WebView with a Context object. 798 * @param context A Context object used to access application assets. 799 */ 800 public WebView(Context context) { 801 this(context, null); 802 } 803 804 /** 805 * Construct a new WebView with layout parameters. 806 * @param context A Context object used to access application assets. 807 * @param attrs An AttributeSet passed to our parent. 808 */ 809 public WebView(Context context, AttributeSet attrs) { 810 this(context, attrs, com.android.internal.R.attr.webViewStyle); 811 } 812 813 /** 814 * Construct a new WebView with layout parameters and a default style. 815 * @param context A Context object used to access application assets. 816 * @param attrs An AttributeSet passed to our parent. 817 * @param defStyle The default style resource ID. 818 */ 819 public WebView(Context context, AttributeSet attrs, int defStyle) { 820 this(context, attrs, defStyle, null); 821 } 822 823 /** 824 * Construct a new WebView with layout parameters, a default style and a set 825 * of custom Javscript interfaces to be added to the WebView at initialization 826 * time. This guarantees that these interfaces will be available when the JS 827 * context is initialized. 828 * @param context A Context object used to access application assets. 829 * @param attrs An AttributeSet passed to our parent. 830 * @param defStyle The default style resource ID. 831 * @param javascriptInterfaces is a Map of intareface names, as keys, and 832 * object implementing those interfaces, as values. 833 * @hide pending API council approval. 834 */ 835 protected WebView(Context context, AttributeSet attrs, int defStyle, 836 Map<String, Object> javascriptInterfaces) { 837 super(context, attrs, defStyle); 838 init(); 839 840 mCallbackProxy = new CallbackProxy(context, this); 841 mViewManager = new ViewManager(this); 842 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 843 mDatabase = WebViewDatabase.getInstance(context); 844 mScroller = new OverScroller(context); 845 846 mZoomButtonsController = new ZoomButtonsController(this); 847 mZoomButtonsController.setOnZoomListener(mZoomListener); 848 // ZoomButtonsController positions the buttons at the bottom, but in 849 // the middle. Change their layout parameters so they appear on the 850 // right. 851 View controls = mZoomButtonsController.getZoomControls(); 852 ViewGroup.LayoutParams params = controls.getLayoutParams(); 853 if (params instanceof FrameLayout.LayoutParams) { 854 FrameLayout.LayoutParams frameParams = (FrameLayout.LayoutParams) 855 params; 856 frameParams.gravity = Gravity.RIGHT; 857 } 858 updateMultiTouchSupport(context); 859 } 860 861 void updateMultiTouchSupport(Context context) { 862 WebSettings settings = getSettings(); 863 mSupportMultiTouch = context.getPackageManager().hasSystemFeature( 864 PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH) 865 && settings.supportZoom() && settings.getBuiltInZoomControls(); 866 if (mSupportMultiTouch && (mScaleDetector == null)) { 867 mScaleDetector = new ScaleGestureDetector(context, 868 new ScaleDetectorListener()); 869 } else if (!mSupportMultiTouch && (mScaleDetector != null)) { 870 mScaleDetector = null; 871 } 872 } 873 874 private void updateZoomButtonsEnabled() { 875 boolean canZoomIn = mActualScale < mMaxZoomScale; 876 boolean canZoomOut = mActualScale > mMinZoomScale && !mInZoomOverview; 877 if (!canZoomIn && !canZoomOut) { 878 // Hide the zoom in and out buttons, as well as the fit to page 879 // button, if the page cannot zoom 880 mZoomButtonsController.getZoomControls().setVisibility(View.GONE); 881 } else { 882 // Set each one individually, as a page may be able to zoom in 883 // or out. 884 mZoomButtonsController.setZoomInEnabled(canZoomIn); 885 mZoomButtonsController.setZoomOutEnabled(canZoomOut); 886 } 887 } 888 889 private void init() { 890 setWillNotDraw(false); 891 setFocusable(true); 892 setFocusableInTouchMode(true); 893 setClickable(true); 894 setLongClickable(true); 895 896 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 897 int slop = configuration.getScaledTouchSlop(); 898 mTouchSlopSquare = slop * slop; 899 mMinLockSnapReverseDistance = slop; 900 slop = configuration.getScaledDoubleTapSlop(); 901 mDoubleTapSlopSquare = slop * slop; 902 final float density = getContext().getResources().getDisplayMetrics().density; 903 // use one line height, 16 based on our current default font, for how 904 // far we allow a touch be away from the edge of a link 905 mNavSlop = (int) (16 * density); 906 // density adjusted scale factors 907 DEFAULT_SCALE_PERCENT = (int) (100 * density); 908 mDefaultScale = density; 909 mActualScale = density; 910 mInvActualScale = 1 / density; 911 mTextWrapScale = density; 912 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 913 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 914 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 915 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 916 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 917 } 918 919 /* package */void updateDefaultZoomDensity(int zoomDensity) { 920 final float density = getContext().getResources().getDisplayMetrics().density 921 * 100 / zoomDensity; 922 if (Math.abs(density - mDefaultScale) > 0.01) { 923 float scaleFactor = density / mDefaultScale; 924 // adjust the limits 925 mNavSlop = (int) (16 * density); 926 DEFAULT_SCALE_PERCENT = (int) (100 * density); 927 DEFAULT_MAX_ZOOM_SCALE = 4.0f * density; 928 DEFAULT_MIN_ZOOM_SCALE = 0.25f * density; 929 mDefaultScale = density; 930 mMaxZoomScale *= scaleFactor; 931 mMinZoomScale *= scaleFactor; 932 setNewZoomScale(mActualScale * scaleFactor, true, false); 933 } 934 } 935 936 /* package */ boolean onSavePassword(String schemePlusHost, String username, 937 String password, final Message resumeMsg) { 938 boolean rVal = false; 939 if (resumeMsg == null) { 940 // null resumeMsg implies saving password silently 941 mDatabase.setUsernamePassword(schemePlusHost, username, password); 942 } else { 943 final Message remember = mPrivateHandler.obtainMessage( 944 REMEMBER_PASSWORD); 945 remember.getData().putString("host", schemePlusHost); 946 remember.getData().putString("username", username); 947 remember.getData().putString("password", password); 948 remember.obj = resumeMsg; 949 950 final Message neverRemember = mPrivateHandler.obtainMessage( 951 NEVER_REMEMBER_PASSWORD); 952 neverRemember.getData().putString("host", schemePlusHost); 953 neverRemember.getData().putString("username", username); 954 neverRemember.getData().putString("password", password); 955 neverRemember.obj = resumeMsg; 956 957 new AlertDialog.Builder(getContext()) 958 .setTitle(com.android.internal.R.string.save_password_label) 959 .setMessage(com.android.internal.R.string.save_password_message) 960 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 961 new DialogInterface.OnClickListener() { 962 public void onClick(DialogInterface dialog, int which) { 963 resumeMsg.sendToTarget(); 964 } 965 }) 966 .setNeutralButton(com.android.internal.R.string.save_password_remember, 967 new DialogInterface.OnClickListener() { 968 public void onClick(DialogInterface dialog, int which) { 969 remember.sendToTarget(); 970 } 971 }) 972 .setNegativeButton(com.android.internal.R.string.save_password_never, 973 new DialogInterface.OnClickListener() { 974 public void onClick(DialogInterface dialog, int which) { 975 neverRemember.sendToTarget(); 976 } 977 }) 978 .setOnCancelListener(new OnCancelListener() { 979 public void onCancel(DialogInterface dialog) { 980 resumeMsg.sendToTarget(); 981 } 982 }).show(); 983 // Return true so that WebViewCore will pause while the dialog is 984 // up. 985 rVal = true; 986 } 987 return rVal; 988 } 989 990 @Override 991 public void setScrollBarStyle(int style) { 992 if (style == View.SCROLLBARS_INSIDE_INSET 993 || style == View.SCROLLBARS_OUTSIDE_INSET) { 994 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 995 } else { 996 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 997 } 998 super.setScrollBarStyle(style); 999 } 1000 1001 /** 1002 * Specify whether the horizontal scrollbar has overlay style. 1003 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1004 */ 1005 public void setHorizontalScrollbarOverlay(boolean overlay) { 1006 mOverlayHorizontalScrollbar = overlay; 1007 } 1008 1009 /** 1010 * Specify whether the vertical scrollbar has overlay style. 1011 * @param overlay TRUE if vertical scrollbar should have overlay style. 1012 */ 1013 public void setVerticalScrollbarOverlay(boolean overlay) { 1014 mOverlayVerticalScrollbar = overlay; 1015 } 1016 1017 /** 1018 * Return whether horizontal scrollbar has overlay style 1019 * @return TRUE if horizontal scrollbar has overlay style. 1020 */ 1021 public boolean overlayHorizontalScrollbar() { 1022 return mOverlayHorizontalScrollbar; 1023 } 1024 1025 /** 1026 * Return whether vertical scrollbar has overlay style 1027 * @return TRUE if vertical scrollbar has overlay style. 1028 */ 1029 public boolean overlayVerticalScrollbar() { 1030 return mOverlayVerticalScrollbar; 1031 } 1032 1033 /* 1034 * Return the width of the view where the content of WebView should render 1035 * to. 1036 * Note: this can be called from WebCoreThread. 1037 */ 1038 /* package */ int getViewWidth() { 1039 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1040 return getWidth(); 1041 } else { 1042 return getWidth() - getVerticalScrollbarWidth(); 1043 } 1044 } 1045 1046 /* 1047 * returns the height of the titlebarview (if any). Does not care about 1048 * scrolling 1049 */ 1050 private int getTitleHeight() { 1051 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1052 } 1053 1054 /* 1055 * Return the amount of the titlebarview (if any) that is visible 1056 */ 1057 private int getVisibleTitleHeight() { 1058 // need to restrict mScrollY due to over scroll 1059 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1060 } 1061 1062 /* 1063 * Return the height of the view where the content of WebView should render 1064 * to. Note that this excludes mTitleBar, if there is one. 1065 * Note: this can be called from WebCoreThread. 1066 */ 1067 /* package */ int getViewHeight() { 1068 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1069 } 1070 1071 private int getViewHeightWithTitle() { 1072 int height = getHeight(); 1073 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1074 height -= getHorizontalScrollbarHeight(); 1075 } 1076 return height; 1077 } 1078 1079 /** 1080 * @return The SSL certificate for the main top-level page or null if 1081 * there is no certificate (the site is not secure). 1082 */ 1083 public SslCertificate getCertificate() { 1084 return mCertificate; 1085 } 1086 1087 /** 1088 * Sets the SSL certificate for the main top-level page. 1089 */ 1090 public void setCertificate(SslCertificate certificate) { 1091 if (DebugFlags.WEB_VIEW) { 1092 Log.v(LOGTAG, "setCertificate=" + certificate); 1093 } 1094 // here, the certificate can be null (if the site is not secure) 1095 mCertificate = certificate; 1096 } 1097 1098 //------------------------------------------------------------------------- 1099 // Methods called by activity 1100 //------------------------------------------------------------------------- 1101 1102 /** 1103 * Save the username and password for a particular host in the WebView's 1104 * internal database. 1105 * @param host The host that required the credentials. 1106 * @param username The username for the given host. 1107 * @param password The password for the given host. 1108 */ 1109 public void savePassword(String host, String username, String password) { 1110 mDatabase.setUsernamePassword(host, username, password); 1111 } 1112 1113 /** 1114 * Set the HTTP authentication credentials for a given host and realm. 1115 * 1116 * @param host The host for the credentials. 1117 * @param realm The realm for the credentials. 1118 * @param username The username for the password. If it is null, it means 1119 * password can't be saved. 1120 * @param password The password 1121 */ 1122 public void setHttpAuthUsernamePassword(String host, String realm, 1123 String username, String password) { 1124 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1125 } 1126 1127 /** 1128 * Retrieve the HTTP authentication username and password for a given 1129 * host & realm pair 1130 * 1131 * @param host The host for which the credentials apply. 1132 * @param realm The realm for which the credentials apply. 1133 * @return String[] if found, String[0] is username, which can be null and 1134 * String[1] is password. Return null if it can't find anything. 1135 */ 1136 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1137 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1138 } 1139 1140 /** 1141 * Destroy the internal state of the WebView. This method should be called 1142 * after the WebView has been removed from the view system. No other 1143 * methods may be called on a WebView after destroy. 1144 */ 1145 public void destroy() { 1146 clearTextEntry(false); 1147 if (mWebViewCore != null) { 1148 // Set the handlers to null before destroying WebViewCore so no 1149 // more messages will be posted. 1150 mCallbackProxy.setWebViewClient(null); 1151 mCallbackProxy.setWebChromeClient(null); 1152 // Tell WebViewCore to destroy itself 1153 synchronized (this) { 1154 WebViewCore webViewCore = mWebViewCore; 1155 mWebViewCore = null; // prevent using partial webViewCore 1156 webViewCore.destroy(); 1157 } 1158 // Remove any pending messages that might not be serviced yet. 1159 mPrivateHandler.removeCallbacksAndMessages(null); 1160 mCallbackProxy.removeCallbacksAndMessages(null); 1161 // Wake up the WebCore thread just in case it is waiting for a 1162 // javascript dialog. 1163 synchronized (mCallbackProxy) { 1164 mCallbackProxy.notify(); 1165 } 1166 } 1167 if (mNativeClass != 0) { 1168 nativeDestroy(); 1169 mNativeClass = 0; 1170 } 1171 } 1172 1173 /** 1174 * Enables platform notifications of data state and proxy changes. 1175 */ 1176 public static void enablePlatformNotifications() { 1177 Network.enablePlatformNotifications(); 1178 } 1179 1180 /** 1181 * If platform notifications are enabled, this should be called 1182 * from the Activity's onPause() or onStop(). 1183 */ 1184 public static void disablePlatformNotifications() { 1185 Network.disablePlatformNotifications(); 1186 } 1187 1188 /** 1189 * Sets JavaScript engine flags. 1190 * 1191 * @param flags JS engine flags in a String 1192 * 1193 * @hide pending API solidification 1194 */ 1195 public void setJsFlags(String flags) { 1196 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1197 } 1198 1199 /** 1200 * Inform WebView of the network state. This is used to set 1201 * the javascript property window.navigator.isOnline and 1202 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1203 * @param networkUp boolean indicating if network is available 1204 */ 1205 public void setNetworkAvailable(boolean networkUp) { 1206 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1207 networkUp ? 1 : 0, 0); 1208 } 1209 1210 /** 1211 * Inform WebView about the current network type. 1212 * {@hide} 1213 */ 1214 public void setNetworkType(String type, String subtype) { 1215 Map<String, String> map = new HashMap<String, String>(); 1216 map.put("type", type); 1217 map.put("subtype", subtype); 1218 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1219 } 1220 /** 1221 * Save the state of this WebView used in 1222 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1223 * method no longer stores the display data for this WebView. The previous 1224 * behavior could potentially leak files if {@link #restoreState} was never 1225 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1226 * and restoring the display data. 1227 * @param outState The Bundle to store the WebView state. 1228 * @return The same copy of the back/forward list used to save the state. If 1229 * saveState fails, the returned list will be null. 1230 * @see #savePicture 1231 * @see #restorePicture 1232 */ 1233 public WebBackForwardList saveState(Bundle outState) { 1234 if (outState == null) { 1235 return null; 1236 } 1237 // We grab a copy of the back/forward list because a client of WebView 1238 // may have invalidated the history list by calling clearHistory. 1239 WebBackForwardList list = copyBackForwardList(); 1240 final int currentIndex = list.getCurrentIndex(); 1241 final int size = list.getSize(); 1242 // We should fail saving the state if the list is empty or the index is 1243 // not in a valid range. 1244 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1245 return null; 1246 } 1247 outState.putInt("index", currentIndex); 1248 // FIXME: This should just be a byte[][] instead of ArrayList but 1249 // Parcel.java does not have the code to handle multi-dimensional 1250 // arrays. 1251 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1252 for (int i = 0; i < size; i++) { 1253 WebHistoryItem item = list.getItemAtIndex(i); 1254 if (null == item) { 1255 // FIXME: this shouldn't happen 1256 // need to determine how item got set to null 1257 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1258 return null; 1259 } 1260 byte[] data = item.getFlattenedData(); 1261 if (data == null) { 1262 // It would be very odd to not have any data for a given history 1263 // item. And we will fail to rebuild the history list without 1264 // flattened data. 1265 return null; 1266 } 1267 history.add(data); 1268 } 1269 outState.putSerializable("history", history); 1270 if (mCertificate != null) { 1271 outState.putBundle("certificate", 1272 SslCertificate.saveState(mCertificate)); 1273 } 1274 return list; 1275 } 1276 1277 /** 1278 * Save the current display data to the Bundle given. Used in conjunction 1279 * with {@link #saveState}. 1280 * @param b A Bundle to store the display data. 1281 * @param dest The file to store the serialized picture data. Will be 1282 * overwritten with this WebView's picture data. 1283 * @return True if the picture was successfully saved. 1284 */ 1285 public boolean savePicture(Bundle b, File dest) { 1286 if (dest == null || b == null) { 1287 return false; 1288 } 1289 final Picture p = capturePicture(); 1290 try { 1291 final FileOutputStream out = new FileOutputStream(dest); 1292 p.writeToStream(out); 1293 out.close(); 1294 // now update the bundle 1295 b.putInt("scrollX", mScrollX); 1296 b.putInt("scrollY", mScrollY); 1297 b.putFloat("scale", mActualScale); 1298 b.putFloat("textwrapScale", mTextWrapScale); 1299 b.putBoolean("overview", mInZoomOverview); 1300 return true; 1301 } catch (FileNotFoundException e){ 1302 e.printStackTrace(); 1303 } catch (IOException e) { 1304 e.printStackTrace(); 1305 } catch (RuntimeException e) { 1306 e.printStackTrace(); 1307 } 1308 return false; 1309 } 1310 1311 /** 1312 * Restore the display data that was save in {@link #savePicture}. Used in 1313 * conjunction with {@link #restoreState}. 1314 * @param b A Bundle containing the saved display data. 1315 * @param src The file where the picture data was stored. 1316 * @return True if the picture was successfully restored. 1317 */ 1318 public boolean restorePicture(Bundle b, File src) { 1319 if (src == null || b == null) { 1320 return false; 1321 } 1322 if (src.exists()) { 1323 Picture p = null; 1324 try { 1325 final FileInputStream in = new FileInputStream(src); 1326 p = Picture.createFromStream(in); 1327 in.close(); 1328 } catch (FileNotFoundException e){ 1329 e.printStackTrace(); 1330 } catch (RuntimeException e) { 1331 e.printStackTrace(); 1332 } catch (IOException e) { 1333 e.printStackTrace(); 1334 } 1335 if (p != null) { 1336 int sx = b.getInt("scrollX", 0); 1337 int sy = b.getInt("scrollY", 0); 1338 float scale = b.getFloat("scale", 1.0f); 1339 mDrawHistory = true; 1340 mHistoryPicture = p; 1341 mScrollX = sx; 1342 mScrollY = sy; 1343 mHistoryWidth = Math.round(p.getWidth() * scale); 1344 mHistoryHeight = Math.round(p.getHeight() * scale); 1345 // as getWidth() / getHeight() of the view are not 1346 // available yet, set up mActualScale, so that when 1347 // onSizeChanged() is called, the rest will be set 1348 // correctly 1349 mActualScale = scale; 1350 mInvActualScale = 1 / scale; 1351 mTextWrapScale = b.getFloat("textwrapScale", scale); 1352 mInZoomOverview = b.getBoolean("overview"); 1353 invalidate(); 1354 return true; 1355 } 1356 } 1357 return false; 1358 } 1359 1360 /** 1361 * Restore the state of this WebView from the given map used in 1362 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1363 * be called to restore the state of the WebView before using the object. If 1364 * it is called after the WebView has had a chance to build state (load 1365 * pages, create a back/forward list, etc.) there may be undesirable 1366 * side-effects. Please note that this method no longer restores the 1367 * display data for this WebView. See {@link #savePicture} and {@link 1368 * #restorePicture} for saving and restoring the display data. 1369 * @param inState The incoming Bundle of state. 1370 * @return The restored back/forward list or null if restoreState failed. 1371 * @see #savePicture 1372 * @see #restorePicture 1373 */ 1374 public WebBackForwardList restoreState(Bundle inState) { 1375 WebBackForwardList returnList = null; 1376 if (inState == null) { 1377 return returnList; 1378 } 1379 if (inState.containsKey("index") && inState.containsKey("history")) { 1380 mCertificate = SslCertificate.restoreState( 1381 inState.getBundle("certificate")); 1382 1383 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1384 final int index = inState.getInt("index"); 1385 // We can't use a clone of the list because we need to modify the 1386 // shared copy, so synchronize instead to prevent concurrent 1387 // modifications. 1388 synchronized (list) { 1389 final List<byte[]> history = 1390 (List<byte[]>) inState.getSerializable("history"); 1391 final int size = history.size(); 1392 // Check the index bounds so we don't crash in native code while 1393 // restoring the history index. 1394 if (index < 0 || index >= size) { 1395 return null; 1396 } 1397 for (int i = 0; i < size; i++) { 1398 byte[] data = history.remove(0); 1399 if (data == null) { 1400 // If we somehow have null data, we cannot reconstruct 1401 // the item and thus our history list cannot be rebuilt. 1402 return null; 1403 } 1404 WebHistoryItem item = new WebHistoryItem(data); 1405 list.addHistoryItem(item); 1406 } 1407 // Grab the most recent copy to return to the caller. 1408 returnList = copyBackForwardList(); 1409 // Update the copy to have the correct index. 1410 returnList.setCurrentIndex(index); 1411 } 1412 // Remove all pending messages because we are restoring previous 1413 // state. 1414 mWebViewCore.removeMessages(); 1415 // Send a restore state message. 1416 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1417 } 1418 return returnList; 1419 } 1420 1421 /** 1422 * Load the given url with the extra headers. 1423 * @param url The url of the resource to load. 1424 * @param extraHeaders The extra headers sent with this url. This should not 1425 * include the common headers like "user-agent". If it does, it 1426 * will be replaced by the intrinsic value of the WebView. 1427 */ 1428 public void loadUrl(String url, Map<String, String> extraHeaders) { 1429 switchOutDrawHistory(); 1430 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1431 arg.mUrl = url; 1432 arg.mExtraHeaders = extraHeaders; 1433 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1434 clearTextEntry(false); 1435 } 1436 1437 /** 1438 * Load the given url. 1439 * @param url The url of the resource to load. 1440 */ 1441 public void loadUrl(String url) { 1442 if (url == null) { 1443 return; 1444 } 1445 loadUrl(url, null); 1446 } 1447 1448 /** 1449 * Load the url with postData using "POST" method into the WebView. If url 1450 * is not a network url, it will be loaded with {link 1451 * {@link #loadUrl(String)} instead. 1452 * 1453 * @param url The url of the resource to load. 1454 * @param postData The data will be passed to "POST" request. 1455 */ 1456 public void postUrl(String url, byte[] postData) { 1457 if (URLUtil.isNetworkUrl(url)) { 1458 switchOutDrawHistory(); 1459 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1460 arg.mUrl = url; 1461 arg.mPostData = postData; 1462 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1463 clearTextEntry(false); 1464 } else { 1465 loadUrl(url); 1466 } 1467 } 1468 1469 /** 1470 * Load the given data into the WebView. This will load the data into 1471 * WebView using the data: scheme. Content loaded through this mechanism 1472 * does not have the ability to load content from the network. 1473 * @param data A String of data in the given encoding. The date must 1474 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1475 * %27, %3f respectively. 1476 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1477 * @param encoding The encoding of the data. i.e. utf-8, base64 1478 */ 1479 public void loadData(String data, String mimeType, String encoding) { 1480 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1481 } 1482 1483 /** 1484 * Load the given data into the WebView, use the provided URL as the base 1485 * URL for the content. The base URL is the URL that represents the page 1486 * that is loaded through this interface. As such, it is used for the 1487 * history entry and to resolve any relative URLs. The failUrl is used if 1488 * browser fails to load the data provided. If it is empty or null, and the 1489 * load fails, then no history entry is created. 1490 * <p> 1491 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1492 * files through "file:///android_asset/" for the sub resources is more 1493 * restricted. If you provide null or empty string as baseUrl, you won't be 1494 * able to access asset files. If the baseUrl is anything other than 1495 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1496 * sub resources. 1497 * 1498 * @param baseUrl Url to resolve relative paths with, if null defaults to 1499 * "about:blank" 1500 * @param data A String of data in the given encoding. 1501 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1502 * defaults to "text/html" 1503 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1504 * @param failUrl URL to use if the content fails to load or null. 1505 */ 1506 public void loadDataWithBaseURL(String baseUrl, String data, 1507 String mimeType, String encoding, String failUrl) { 1508 1509 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1510 loadData(data, mimeType, encoding); 1511 return; 1512 } 1513 switchOutDrawHistory(); 1514 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1515 arg.mBaseUrl = baseUrl; 1516 arg.mData = data; 1517 arg.mMimeType = mimeType; 1518 arg.mEncoding = encoding; 1519 arg.mFailUrl = failUrl; 1520 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1521 clearTextEntry(false); 1522 } 1523 1524 /** 1525 * Stop the current load. 1526 */ 1527 public void stopLoading() { 1528 // TODO: should we clear all the messages in the queue before sending 1529 // STOP_LOADING? 1530 switchOutDrawHistory(); 1531 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1532 } 1533 1534 /** 1535 * Reload the current url. 1536 */ 1537 public void reload() { 1538 clearTextEntry(false); 1539 switchOutDrawHistory(); 1540 mWebViewCore.sendMessage(EventHub.RELOAD); 1541 } 1542 1543 /** 1544 * Return true if this WebView has a back history item. 1545 * @return True iff this WebView has a back history item. 1546 */ 1547 public boolean canGoBack() { 1548 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1549 synchronized (l) { 1550 if (l.getClearPending()) { 1551 return false; 1552 } else { 1553 return l.getCurrentIndex() > 0; 1554 } 1555 } 1556 } 1557 1558 /** 1559 * Go back in the history of this WebView. 1560 */ 1561 public void goBack() { 1562 goBackOrForward(-1); 1563 } 1564 1565 /** 1566 * Return true if this WebView has a forward history item. 1567 * @return True iff this Webview has a forward history item. 1568 */ 1569 public boolean canGoForward() { 1570 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1571 synchronized (l) { 1572 if (l.getClearPending()) { 1573 return false; 1574 } else { 1575 return l.getCurrentIndex() < l.getSize() - 1; 1576 } 1577 } 1578 } 1579 1580 /** 1581 * Go forward in the history of this WebView. 1582 */ 1583 public void goForward() { 1584 goBackOrForward(1); 1585 } 1586 1587 /** 1588 * Return true if the page can go back or forward the given 1589 * number of steps. 1590 * @param steps The negative or positive number of steps to move the 1591 * history. 1592 */ 1593 public boolean canGoBackOrForward(int steps) { 1594 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1595 synchronized (l) { 1596 if (l.getClearPending()) { 1597 return false; 1598 } else { 1599 int newIndex = l.getCurrentIndex() + steps; 1600 return newIndex >= 0 && newIndex < l.getSize(); 1601 } 1602 } 1603 } 1604 1605 /** 1606 * Go to the history item that is the number of steps away from 1607 * the current item. Steps is negative if backward and positive 1608 * if forward. 1609 * @param steps The number of steps to take back or forward in the back 1610 * forward list. 1611 */ 1612 public void goBackOrForward(int steps) { 1613 goBackOrForward(steps, false); 1614 } 1615 1616 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1617 if (steps != 0) { 1618 clearTextEntry(false); 1619 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1620 ignoreSnapshot ? 1 : 0); 1621 } 1622 } 1623 1624 private boolean extendScroll(int y) { 1625 int finalY = mScroller.getFinalY(); 1626 int newY = pinLocY(finalY + y); 1627 if (newY == finalY) return false; 1628 mScroller.setFinalY(newY); 1629 mScroller.extendDuration(computeDuration(0, y)); 1630 return true; 1631 } 1632 1633 /** 1634 * Scroll the contents of the view up by half the view size 1635 * @param top true to jump to the top of the page 1636 * @return true if the page was scrolled 1637 */ 1638 public boolean pageUp(boolean top) { 1639 if (mNativeClass == 0) { 1640 return false; 1641 } 1642 nativeClearCursor(); // start next trackball movement from page edge 1643 if (top) { 1644 // go to the top of the document 1645 return pinScrollTo(mScrollX, 0, true, 0); 1646 } 1647 // Page up 1648 int h = getHeight(); 1649 int y; 1650 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1651 y = -h + PAGE_SCROLL_OVERLAP; 1652 } else { 1653 y = -h / 2; 1654 } 1655 mUserScroll = true; 1656 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1657 : extendScroll(y); 1658 } 1659 1660 /** 1661 * Scroll the contents of the view down by half the page size 1662 * @param bottom true to jump to bottom of page 1663 * @return true if the page was scrolled 1664 */ 1665 public boolean pageDown(boolean bottom) { 1666 if (mNativeClass == 0) { 1667 return false; 1668 } 1669 nativeClearCursor(); // start next trackball movement from page edge 1670 if (bottom) { 1671 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1672 } 1673 // Page down. 1674 int h = getHeight(); 1675 int y; 1676 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1677 y = h - PAGE_SCROLL_OVERLAP; 1678 } else { 1679 y = h / 2; 1680 } 1681 mUserScroll = true; 1682 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1683 : extendScroll(y); 1684 } 1685 1686 /** 1687 * Clear the view so that onDraw() will draw nothing but white background, 1688 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1689 */ 1690 public void clearView() { 1691 mContentWidth = 0; 1692 mContentHeight = 0; 1693 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1694 } 1695 1696 /** 1697 * Return a new picture that captures the current display of the webview. 1698 * This is a copy of the display, and will be unaffected if the webview 1699 * later loads a different URL. 1700 * 1701 * @return a picture containing the current contents of the view. Note this 1702 * picture is of the entire document, and is not restricted to the 1703 * bounds of the view. 1704 */ 1705 public Picture capturePicture() { 1706 if (null == mWebViewCore) return null; // check for out of memory tab 1707 return mWebViewCore.copyContentPicture(); 1708 } 1709 1710 /** 1711 * Return true if the browser is displaying a TextView for text input. 1712 */ 1713 private boolean inEditingMode() { 1714 return mWebTextView != null && mWebTextView.getParent() != null 1715 && mWebTextView.hasFocus(); 1716 } 1717 1718 /** 1719 * Remove the WebTextView. 1720 * @param disableFocusController If true, send a message to webkit 1721 * disabling the focus controller, so the caret stops blinking. 1722 */ 1723 private void clearTextEntry(boolean disableFocusController) { 1724 if (inEditingMode()) { 1725 mWebTextView.remove(); 1726 if (disableFocusController) { 1727 setFocusControllerInactive(); 1728 } 1729 } 1730 } 1731 1732 /** 1733 * Return the current scale of the WebView 1734 * @return The current scale. 1735 */ 1736 public float getScale() { 1737 return mActualScale; 1738 } 1739 1740 /** 1741 * Set the initial scale for the WebView. 0 means default. If 1742 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1743 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1744 * WebView starts will this value as initial scale. 1745 * 1746 * @param scaleInPercent The initial scale in percent. 1747 */ 1748 public void setInitialScale(int scaleInPercent) { 1749 mInitialScaleInPercent = scaleInPercent; 1750 } 1751 1752 /** 1753 * Invoke the graphical zoom picker widget for this WebView. This will 1754 * result in the zoom widget appearing on the screen to control the zoom 1755 * level of this WebView. 1756 */ 1757 public void invokeZoomPicker() { 1758 if (!getSettings().supportZoom()) { 1759 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1760 return; 1761 } 1762 clearTextEntry(false); 1763 if (getSettings().getBuiltInZoomControls()) { 1764 mZoomButtonsController.setVisible(true); 1765 } else { 1766 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 1767 mPrivateHandler.postDelayed(mZoomControlRunnable, 1768 ZOOM_CONTROLS_TIMEOUT); 1769 } 1770 } 1771 1772 /** 1773 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1774 * is found and the anchor has a non-javascript url, the HitTestResult type 1775 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1776 * anchor does not have a url or if it is a javascript url, the type will 1777 * be UNKNOWN_TYPE and the url has to be retrieved through 1778 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1779 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1780 * the "extra" field. A type of 1781 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1782 * a child node. If a phone number is found, the HitTestResult type is set 1783 * to PHONE_TYPE and the phone number is set in the "extra" field of 1784 * HitTestResult. If a map address is found, the HitTestResult type is set 1785 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1786 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1787 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1788 * HitTestResult type is set to UNKNOWN_TYPE. 1789 */ 1790 public HitTestResult getHitTestResult() { 1791 if (mNativeClass == 0) { 1792 return null; 1793 } 1794 1795 HitTestResult result = new HitTestResult(); 1796 if (nativeHasCursorNode()) { 1797 if (nativeCursorIsTextInput()) { 1798 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1799 } else { 1800 String text = nativeCursorText(); 1801 if (text != null) { 1802 if (text.startsWith(SCHEME_TEL)) { 1803 result.setType(HitTestResult.PHONE_TYPE); 1804 result.setExtra(text.substring(SCHEME_TEL.length())); 1805 } else if (text.startsWith(SCHEME_MAILTO)) { 1806 result.setType(HitTestResult.EMAIL_TYPE); 1807 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1808 } else if (text.startsWith(SCHEME_GEO)) { 1809 result.setType(HitTestResult.GEO_TYPE); 1810 result.setExtra(URLDecoder.decode(text 1811 .substring(SCHEME_GEO.length()))); 1812 } else if (nativeCursorIsAnchor()) { 1813 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1814 result.setExtra(text); 1815 } 1816 } 1817 } 1818 } 1819 int type = result.getType(); 1820 if (type == HitTestResult.UNKNOWN_TYPE 1821 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1822 // Now check to see if it is an image. 1823 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1824 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1825 String text = nativeImageURI(contentX, contentY); 1826 if (text != null) { 1827 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1828 HitTestResult.IMAGE_TYPE : 1829 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1830 result.setExtra(text); 1831 } 1832 } 1833 return result; 1834 } 1835 1836 // Called by JNI when the DOM has changed the focus. Clear the focus so 1837 // that new keys will go to the newly focused field 1838 private void domChangedFocus() { 1839 if (inEditingMode()) { 1840 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1841 } 1842 } 1843 /** 1844 * Request the href of an anchor element due to getFocusNodePath returning 1845 * "href." If hrefMsg is null, this method returns immediately and does not 1846 * dispatch hrefMsg to its target. 1847 * 1848 * @param hrefMsg This message will be dispatched with the result of the 1849 * request as the data member with "url" as key. The result can 1850 * be null. 1851 */ 1852 // FIXME: API change required to change the name of this function. We now 1853 // look at the cursor node, and not the focus node. Also, what is 1854 // getFocusNodePath? 1855 public void requestFocusNodeHref(Message hrefMsg) { 1856 if (hrefMsg == null || mNativeClass == 0) { 1857 return; 1858 } 1859 if (nativeCursorIsAnchor()) { 1860 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1861 nativeCursorFramePointer(), nativeCursorNodePointer(), 1862 hrefMsg); 1863 } 1864 } 1865 1866 /** 1867 * Request the url of the image last touched by the user. msg will be sent 1868 * to its target with a String representing the url as its object. 1869 * 1870 * @param msg This message will be dispatched with the result of the request 1871 * as the data member with "url" as key. The result can be null. 1872 */ 1873 public void requestImageRef(Message msg) { 1874 if (0 == mNativeClass) return; // client isn't initialized 1875 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1876 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1877 String ref = nativeImageURI(contentX, contentY); 1878 Bundle data = msg.getData(); 1879 data.putString("url", ref); 1880 msg.setData(data); 1881 msg.sendToTarget(); 1882 } 1883 1884 private static int pinLoc(int x, int viewMax, int docMax) { 1885// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1886 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1887 // pin the short document to the top/left of the screen 1888 x = 0; 1889// Log.d(LOGTAG, "--- center " + x); 1890 } else if (x < 0) { 1891 x = 0; 1892// Log.d(LOGTAG, "--- zero"); 1893 } else if (x + viewMax > docMax) { 1894 x = docMax - viewMax; 1895// Log.d(LOGTAG, "--- pin " + x); 1896 } 1897 return x; 1898 } 1899 1900 // Expects x in view coordinates 1901 private int pinLocX(int x) { 1902 if (mInOverScrollMode) return x; 1903 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1904 } 1905 1906 // Expects y in view coordinates 1907 private int pinLocY(int y) { 1908 if (mInOverScrollMode) return y; 1909 return pinLoc(y, getViewHeightWithTitle(), 1910 computeVerticalScrollRange() + getTitleHeight()); 1911 } 1912 1913 /** 1914 * A title bar which is embedded in this WebView, and scrolls along with it 1915 * vertically, but not horizontally. 1916 */ 1917 private View mTitleBar; 1918 1919 /** 1920 * Since we draw the title bar ourselves, we removed the shadow from the 1921 * browser's activity. We do want a shadow at the bottom of the title bar, 1922 * or at the top of the screen if the title bar is not visible. This 1923 * drawable serves that purpose. 1924 */ 1925 private Drawable mTitleShadow; 1926 1927 /** 1928 * Add or remove a title bar to be embedded into the WebView, and scroll 1929 * along with it vertically, while remaining in view horizontally. Pass 1930 * null to remove the title bar from the WebView, and return to drawing 1931 * the WebView normally without translating to account for the title bar. 1932 * @hide 1933 */ 1934 public void setEmbeddedTitleBar(View v) { 1935 if (mTitleBar == v) return; 1936 if (mTitleBar != null) { 1937 removeView(mTitleBar); 1938 } 1939 if (null != v) { 1940 addView(v, new AbsoluteLayout.LayoutParams( 1941 ViewGroup.LayoutParams.MATCH_PARENT, 1942 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 1943 if (mTitleShadow == null) { 1944 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 1945 com.android.internal.R.drawable.title_bar_shadow); 1946 } 1947 } 1948 mTitleBar = v; 1949 } 1950 1951 /** 1952 * Given a distance in view space, convert it to content space. Note: this 1953 * does not reflect translation, just scaling, so this should not be called 1954 * with coordinates, but should be called for dimensions like width or 1955 * height. 1956 */ 1957 private int viewToContentDimension(int d) { 1958 return Math.round(d * mInvActualScale); 1959 } 1960 1961 /** 1962 * Given an x coordinate in view space, convert it to content space. Also 1963 * may be used for absolute heights (such as for the WebTextView's 1964 * textSize, which is unaffected by the height of the title bar). 1965 */ 1966 /*package*/ int viewToContentX(int x) { 1967 return viewToContentDimension(x); 1968 } 1969 1970 /** 1971 * Given a y coordinate in view space, convert it to content space. 1972 * Takes into account the height of the title bar if there is one 1973 * embedded into the WebView. 1974 */ 1975 /*package*/ int viewToContentY(int y) { 1976 return viewToContentDimension(y - getTitleHeight()); 1977 } 1978 1979 /** 1980 * Given a distance in content space, convert it to view space. Note: this 1981 * does not reflect translation, just scaling, so this should not be called 1982 * with coordinates, but should be called for dimensions like width or 1983 * height. 1984 */ 1985 /*package*/ int contentToViewDimension(int d) { 1986 return Math.round(d * mActualScale); 1987 } 1988 1989 /** 1990 * Given an x coordinate in content space, convert it to view 1991 * space. 1992 */ 1993 /*package*/ int contentToViewX(int x) { 1994 return contentToViewDimension(x); 1995 } 1996 1997 /** 1998 * Given a y coordinate in content space, convert it to view 1999 * space. Takes into account the height of the title bar. 2000 */ 2001 /*package*/ int contentToViewY(int y) { 2002 return contentToViewDimension(y) + getTitleHeight(); 2003 } 2004 2005 private Rect contentToViewRect(Rect x) { 2006 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2007 contentToViewX(x.right), contentToViewY(x.bottom)); 2008 } 2009 2010 /* To invalidate a rectangle in content coordinates, we need to transform 2011 the rect into view coordinates, so we can then call invalidate(...). 2012 2013 Normally, we would just call contentToView[XY](...), which eventually 2014 calls Math.round(coordinate * mActualScale). However, for invalidates, 2015 we need to account for the slop that occurs with antialiasing. To 2016 address that, we are a little more liberal in the size of the rect that 2017 we invalidate. 2018 2019 This liberal calculation calls floor() for the top/left, and ceil() for 2020 the bottom/right coordinates. This catches the possible extra pixels of 2021 antialiasing that we might have missed with just round(). 2022 */ 2023 2024 // Called by JNI to invalidate the View, given rectangle coordinates in 2025 // content space 2026 private void viewInvalidate(int l, int t, int r, int b) { 2027 final float scale = mActualScale; 2028 final int dy = getTitleHeight(); 2029 invalidate((int)Math.floor(l * scale), 2030 (int)Math.floor(t * scale) + dy, 2031 (int)Math.ceil(r * scale), 2032 (int)Math.ceil(b * scale) + dy); 2033 } 2034 2035 // Called by JNI to invalidate the View after a delay, given rectangle 2036 // coordinates in content space 2037 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2038 final float scale = mActualScale; 2039 final int dy = getTitleHeight(); 2040 postInvalidateDelayed(delay, 2041 (int)Math.floor(l * scale), 2042 (int)Math.floor(t * scale) + dy, 2043 (int)Math.ceil(r * scale), 2044 (int)Math.ceil(b * scale) + dy); 2045 } 2046 2047 private void invalidateContentRect(Rect r) { 2048 viewInvalidate(r.left, r.top, r.right, r.bottom); 2049 } 2050 2051 // stop the scroll animation, and don't let a subsequent fling add 2052 // to the existing velocity 2053 private void abortAnimation() { 2054 mScroller.abortAnimation(); 2055 mLastVelocity = 0; 2056 } 2057 2058 /* call from webcoreview.draw(), so we're still executing in the UI thread 2059 */ 2060 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2061 2062 // premature data from webkit, ignore 2063 if ((w | h) == 0) { 2064 return; 2065 } 2066 2067 // don't abort a scroll animation if we didn't change anything 2068 if (mContentWidth != w || mContentHeight != h) { 2069 // record new dimensions 2070 mContentWidth = w; 2071 mContentHeight = h; 2072 // If history Picture is drawn, don't update scroll. They will be 2073 // updated when we get out of that mode. 2074 if (!mDrawHistory) { 2075 // repin our scroll, taking into account the new content size 2076 int oldX = mScrollX; 2077 int oldY = mScrollY; 2078 mScrollX = pinLocX(mScrollX); 2079 mScrollY = pinLocY(mScrollY); 2080 if (oldX != mScrollX || oldY != mScrollY) { 2081 sendOurVisibleRect(); 2082 } 2083 if (!mScroller.isFinished()) { 2084 // We are in the middle of a scroll. Repin the final scroll 2085 // position. 2086 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2087 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2088 } 2089 } 2090 } 2091 contentSizeChanged(updateLayout); 2092 } 2093 2094 private void setNewZoomScale(float scale, boolean updateTextWrapScale, 2095 boolean force) { 2096 if (scale < mMinZoomScale) { 2097 scale = mMinZoomScale; 2098 // set mInZoomOverview for non mobile sites 2099 if (scale < mDefaultScale) mInZoomOverview = true; 2100 } else if (scale > mMaxZoomScale) { 2101 scale = mMaxZoomScale; 2102 } 2103 if (updateTextWrapScale) { 2104 mTextWrapScale = scale; 2105 // reset mLastHeightSent to force VIEW_SIZE_CHANGED sent to WebKit 2106 mLastHeightSent = 0; 2107 } 2108 if (scale != mActualScale || force) { 2109 if (mDrawHistory) { 2110 // If history Picture is drawn, don't update scroll. They will 2111 // be updated when we get out of that mode. 2112 if (scale != mActualScale && !mPreviewZoomOnly) { 2113 mCallbackProxy.onScaleChanged(mActualScale, scale); 2114 } 2115 mActualScale = scale; 2116 mInvActualScale = 1 / scale; 2117 sendViewSizeZoom(); 2118 } else { 2119 // update our scroll so we don't appear to jump 2120 // i.e. keep the center of the doc in the center of the view 2121 2122 int oldX = mScrollX; 2123 int oldY = mScrollY; 2124 float ratio = scale * mInvActualScale; // old inverse 2125 float sx = ratio * oldX + (ratio - 1) * mZoomCenterX; 2126 float sy = ratio * oldY + (ratio - 1) 2127 * (mZoomCenterY - getTitleHeight()); 2128 2129 // now update our new scale and inverse 2130 if (scale != mActualScale && !mPreviewZoomOnly) { 2131 mCallbackProxy.onScaleChanged(mActualScale, scale); 2132 } 2133 mActualScale = scale; 2134 mInvActualScale = 1 / scale; 2135 2136 // Scale all the child views 2137 mViewManager.scaleAll(); 2138 2139 // as we don't have animation for scaling, don't do animation 2140 // for scrolling, as it causes weird intermediate state 2141 // pinScrollTo(Math.round(sx), Math.round(sy)); 2142 mScrollX = pinLocX(Math.round(sx)); 2143 mScrollY = pinLocY(Math.round(sy)); 2144 2145 // update webkit 2146 sendViewSizeZoom(); 2147 sendOurVisibleRect(); 2148 } 2149 } 2150 } 2151 2152 // Used to avoid sending many visible rect messages. 2153 private Rect mLastVisibleRectSent; 2154 private Rect mLastGlobalRect; 2155 2156 private Rect sendOurVisibleRect() { 2157 if (mPreviewZoomOnly) return mLastVisibleRectSent; 2158 2159 Rect rect = new Rect(); 2160 calcOurContentVisibleRect(rect); 2161 // Rect.equals() checks for null input. 2162 if (!rect.equals(mLastVisibleRectSent)) { 2163 Point pos = new Point(rect.left, rect.top); 2164 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2165 nativeMoveGeneration(), 0, pos); 2166 mLastVisibleRectSent = rect; 2167 } 2168 Rect globalRect = new Rect(); 2169 if (getGlobalVisibleRect(globalRect) 2170 && !globalRect.equals(mLastGlobalRect)) { 2171 if (DebugFlags.WEB_VIEW) { 2172 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2173 + globalRect.top + ",r=" + globalRect.right + ",b=" 2174 + globalRect.bottom); 2175 } 2176 // TODO: the global offset is only used by windowRect() 2177 // in ChromeClientAndroid ; other clients such as touch 2178 // and mouse events could return view + screen relative points. 2179 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2180 mLastGlobalRect = globalRect; 2181 } 2182 return rect; 2183 } 2184 2185 // Sets r to be the visible rectangle of our webview in view coordinates 2186 private void calcOurVisibleRect(Rect r) { 2187 Point p = new Point(); 2188 getGlobalVisibleRect(r, p); 2189 r.offset(-p.x, -p.y); 2190 if (mFindIsUp) { 2191 r.bottom -= mFindHeight; 2192 } 2193 } 2194 2195 // Sets r to be our visible rectangle in content coordinates 2196 private void calcOurContentVisibleRect(Rect r) { 2197 calcOurVisibleRect(r); 2198 // since we might overscroll, pin the rect to the bounds of the content 2199 r.left = Math.max(viewToContentX(r.left), 0); 2200 // viewToContentY will remove the total height of the title bar. Add 2201 // the visible height back in to account for the fact that if the title 2202 // bar is partially visible, the part of the visible rect which is 2203 // displaying our content is displaced by that amount. 2204 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2205 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2206 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2207 } 2208 2209 static class ViewSizeData { 2210 int mWidth; 2211 int mHeight; 2212 int mTextWrapWidth; 2213 int mAnchorX; 2214 int mAnchorY; 2215 float mScale; 2216 boolean mIgnoreHeight; 2217 } 2218 2219 /** 2220 * Compute unzoomed width and height, and if they differ from the last 2221 * values we sent, send them to webkit (to be used has new viewport) 2222 * 2223 * @return true if new values were sent 2224 */ 2225 private boolean sendViewSizeZoom() { 2226 if (mPreviewZoomOnly) return false; 2227 2228 int viewWidth = getViewWidth(); 2229 int newWidth = Math.round(viewWidth * mInvActualScale); 2230 int newHeight = Math.round(getViewHeight() * mInvActualScale); 2231 /* 2232 * Because the native side may have already done a layout before the 2233 * View system was able to measure us, we have to send a height of 0 to 2234 * remove excess whitespace when we grow our width. This will trigger a 2235 * layout and a change in content size. This content size change will 2236 * mean that contentSizeChanged will either call this method directly or 2237 * indirectly from onSizeChanged. 2238 */ 2239 if (newWidth > mLastWidthSent && mWrapContent) { 2240 newHeight = 0; 2241 } 2242 // Avoid sending another message if the dimensions have not changed. 2243 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent) { 2244 ViewSizeData data = new ViewSizeData(); 2245 data.mWidth = newWidth; 2246 data.mHeight = newHeight; 2247 data.mTextWrapWidth = Math.round(viewWidth / mTextWrapScale);; 2248 data.mScale = mActualScale; 2249 data.mIgnoreHeight = mZoomScale != 0 && !mHeightCanMeasure; 2250 data.mAnchorX = mAnchorX; 2251 data.mAnchorY = mAnchorY; 2252 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2253 mLastWidthSent = newWidth; 2254 mLastHeightSent = newHeight; 2255 mAnchorX = mAnchorY = 0; 2256 return true; 2257 } 2258 return false; 2259 } 2260 2261 @Override 2262 protected int computeHorizontalScrollRange() { 2263 if (mDrawHistory) { 2264 return mHistoryWidth; 2265 } else { 2266 // to avoid rounding error caused unnecessary scrollbar, use floor 2267 return (int) Math.floor(mContentWidth * mActualScale); 2268 } 2269 } 2270 2271 @Override 2272 protected int computeVerticalScrollRange() { 2273 if (mDrawHistory) { 2274 return mHistoryHeight; 2275 } else { 2276 // to avoid rounding error caused unnecessary scrollbar, use floor 2277 return (int) Math.floor(mContentHeight * mActualScale); 2278 } 2279 } 2280 2281 @Override 2282 protected int computeVerticalScrollOffset() { 2283 return Math.max(mScrollY - getTitleHeight(), 0); 2284 } 2285 2286 @Override 2287 protected int computeVerticalScrollExtent() { 2288 return getViewHeight(); 2289 } 2290 2291 /** @hide */ 2292 @Override 2293 protected void onDrawVerticalScrollBar(Canvas canvas, 2294 Drawable scrollBar, 2295 int l, int t, int r, int b) { 2296 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2297 scrollBar.draw(canvas); 2298 } 2299 2300 private boolean canOverscrollHorizontally() { 2301 return (Math.abs(mMinZoomScale - mMaxZoomScale) >= MINIMUM_SCALE_INCREMENT) 2302 && getSettings().supportZoom() 2303 && getSettings().getUseWideViewPort(); 2304 } 2305 2306 @Override 2307 protected void onOverscrolled(int scrollX, int scrollY, boolean clampedX, 2308 boolean clampedY) { 2309 mInOverScrollMode = false; 2310 int maxX = computeMaxScrollX(); 2311 if (maxX == 0 && !canOverscrollHorizontally()) { 2312 // do not over scroll x if the page just fits the screen and it 2313 // can't zoom or the view doesn't use wide viewport 2314 scrollX = pinLocX(scrollX); 2315 } else if (scrollX < 0 || scrollX > maxX) { 2316 mInOverScrollMode = true; 2317 } 2318 if (scrollY < 0 || scrollY > computeMaxScrollY()) { 2319 mInOverScrollMode = true; 2320 } 2321 super.scrollTo(scrollX, scrollY); 2322 } 2323 2324 /** 2325 * Get the url for the current page. This is not always the same as the url 2326 * passed to WebViewClient.onPageStarted because although the load for 2327 * that url has begun, the current page may not have changed. 2328 * @return The url for the current page. 2329 */ 2330 public String getUrl() { 2331 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2332 return h != null ? h.getUrl() : null; 2333 } 2334 2335 /** 2336 * Get the original url for the current page. This is not always the same 2337 * as the url passed to WebViewClient.onPageStarted because although the 2338 * load for that url has begun, the current page may not have changed. 2339 * Also, there may have been redirects resulting in a different url to that 2340 * originally requested. 2341 * @return The url that was originally requested for the current page. 2342 */ 2343 public String getOriginalUrl() { 2344 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2345 return h != null ? h.getOriginalUrl() : null; 2346 } 2347 2348 /** 2349 * Get the title for the current page. This is the title of the current page 2350 * until WebViewClient.onReceivedTitle is called. 2351 * @return The title for the current page. 2352 */ 2353 public String getTitle() { 2354 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2355 return h != null ? h.getTitle() : null; 2356 } 2357 2358 /** 2359 * Get the favicon for the current page. This is the favicon of the current 2360 * page until WebViewClient.onReceivedIcon is called. 2361 * @return The favicon for the current page. 2362 */ 2363 public Bitmap getFavicon() { 2364 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2365 return h != null ? h.getFavicon() : null; 2366 } 2367 2368 /** 2369 * Get the touch icon url for the apple-touch-icon <link> element. 2370 * @hide 2371 */ 2372 public String getTouchIconUrl() { 2373 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2374 return h != null ? h.getTouchIconUrl() : null; 2375 } 2376 2377 /** 2378 * Get the progress for the current page. 2379 * @return The progress for the current page between 0 and 100. 2380 */ 2381 public int getProgress() { 2382 return mCallbackProxy.getProgress(); 2383 } 2384 2385 /** 2386 * @return the height of the HTML content. 2387 */ 2388 public int getContentHeight() { 2389 return mContentHeight; 2390 } 2391 2392 /** 2393 * @return the width of the HTML content. 2394 * @hide 2395 */ 2396 public int getContentWidth() { 2397 return mContentWidth; 2398 } 2399 2400 /** 2401 * Pause all layout, parsing, and javascript timers for all webviews. This 2402 * is a global requests, not restricted to just this webview. This can be 2403 * useful if the application has been paused. 2404 */ 2405 public void pauseTimers() { 2406 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2407 } 2408 2409 /** 2410 * Resume all layout, parsing, and javascript timers for all webviews. 2411 * This will resume dispatching all timers. 2412 */ 2413 public void resumeTimers() { 2414 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2415 } 2416 2417 /** 2418 * Call this to pause any extra processing associated with this view and 2419 * its associated DOM/plugins/javascript/etc. For example, if the view is 2420 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2421 * network traffic. When the view is again "active", call onResume(). 2422 * 2423 * Note that this differs from pauseTimers(), which affects all views/DOMs 2424 * @hide 2425 */ 2426 public void onPause() { 2427 if (!mIsPaused) { 2428 mIsPaused = true; 2429 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2430 } 2431 } 2432 2433 /** 2434 * Call this to balanace a previous call to onPause() 2435 * @hide 2436 */ 2437 public void onResume() { 2438 if (mIsPaused) { 2439 mIsPaused = false; 2440 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2441 } 2442 } 2443 2444 /** 2445 * Returns true if the view is paused, meaning onPause() was called. Calling 2446 * onResume() sets the paused state back to false. 2447 * @hide 2448 */ 2449 public boolean isPaused() { 2450 return mIsPaused; 2451 } 2452 2453 /** 2454 * Call this to inform the view that memory is low so that it can 2455 * free any available memory. 2456 */ 2457 public void freeMemory() { 2458 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2459 } 2460 2461 /** 2462 * Clear the resource cache. Note that the cache is per-application, so 2463 * this will clear the cache for all WebViews used. 2464 * 2465 * @param includeDiskFiles If false, only the RAM cache is cleared. 2466 */ 2467 public void clearCache(boolean includeDiskFiles) { 2468 // Note: this really needs to be a static method as it clears cache for all 2469 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2470 // we can't make this static. 2471 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2472 includeDiskFiles ? 1 : 0, 0); 2473 } 2474 2475 /** 2476 * Make sure that clearing the form data removes the adapter from the 2477 * currently focused textfield if there is one. 2478 */ 2479 public void clearFormData() { 2480 if (inEditingMode()) { 2481 AutoCompleteAdapter adapter = null; 2482 mWebTextView.setAdapterCustom(adapter); 2483 } 2484 } 2485 2486 /** 2487 * Tell the WebView to clear its internal back/forward list. 2488 */ 2489 public void clearHistory() { 2490 mCallbackProxy.getBackForwardList().setClearPending(); 2491 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2492 } 2493 2494 /** 2495 * Clear the SSL preferences table stored in response to proceeding with SSL 2496 * certificate errors. 2497 */ 2498 public void clearSslPreferences() { 2499 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2500 } 2501 2502 /** 2503 * Return the WebBackForwardList for this WebView. This contains the 2504 * back/forward list for use in querying each item in the history stack. 2505 * This is a copy of the private WebBackForwardList so it contains only a 2506 * snapshot of the current state. Multiple calls to this method may return 2507 * different objects. The object returned from this method will not be 2508 * updated to reflect any new state. 2509 */ 2510 public WebBackForwardList copyBackForwardList() { 2511 return mCallbackProxy.getBackForwardList().clone(); 2512 } 2513 2514 /* 2515 * Highlight and scroll to the next occurance of String in findAll. 2516 * Wraps the page infinitely, and scrolls. Must be called after 2517 * calling findAll. 2518 * 2519 * @param forward Direction to search. 2520 */ 2521 public void findNext(boolean forward) { 2522 if (0 == mNativeClass) return; // client isn't initialized 2523 nativeFindNext(forward); 2524 } 2525 2526 /* 2527 * Find all instances of find on the page and highlight them. 2528 * @param find String to find. 2529 * @return int The number of occurances of the String "find" 2530 * that were found. 2531 */ 2532 public int findAll(String find) { 2533 if (0 == mNativeClass) return 0; // client isn't initialized 2534 int result = find != null ? nativeFindAll(find.toLowerCase(), 2535 find.toUpperCase()) : 0; 2536 invalidate(); 2537 mLastFind = find; 2538 return result; 2539 } 2540 2541 /** 2542 * @hide 2543 */ 2544 public void setFindIsUp(boolean isUp) { 2545 mFindIsUp = isUp; 2546 if (isUp) { 2547 recordNewContentSize(mContentWidth, mContentHeight + mFindHeight, 2548 false); 2549 } 2550 if (0 == mNativeClass) return; // client isn't initialized 2551 nativeSetFindIsUp(isUp); 2552 } 2553 2554 // Used to know whether the find dialog is open. Affects whether 2555 // or not we draw the highlights for matches. 2556 private boolean mFindIsUp; 2557 2558 private int mFindHeight; 2559 // Keep track of the last string sent, so we can search again after an 2560 // orientation change or the dismissal of the soft keyboard. 2561 private String mLastFind; 2562 2563 /** 2564 * Return the first substring consisting of the address of a physical 2565 * location. Currently, only addresses in the United States are detected, 2566 * and consist of: 2567 * - a house number 2568 * - a street name 2569 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2570 * - a city name 2571 * - a state or territory, either spelled out or two-letter abbr. 2572 * - an optional 5 digit or 9 digit zip code. 2573 * 2574 * All names must be correctly capitalized, and the zip code, if present, 2575 * must be valid for the state. The street type must be a standard USPS 2576 * spelling or abbreviation. The state or territory must also be spelled 2577 * or abbreviated using USPS standards. The house number may not exceed 2578 * five digits. 2579 * @param addr The string to search for addresses. 2580 * 2581 * @return the address, or if no address is found, return null. 2582 */ 2583 public static String findAddress(String addr) { 2584 return findAddress(addr, false); 2585 } 2586 2587 /** 2588 * @hide 2589 * Return the first substring consisting of the address of a physical 2590 * location. Currently, only addresses in the United States are detected, 2591 * and consist of: 2592 * - a house number 2593 * - a street name 2594 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2595 * - a city name 2596 * - a state or territory, either spelled out or two-letter abbr. 2597 * - an optional 5 digit or 9 digit zip code. 2598 * 2599 * Names are optionally capitalized, and the zip code, if present, 2600 * must be valid for the state. The street type must be a standard USPS 2601 * spelling or abbreviation. The state or territory must also be spelled 2602 * or abbreviated using USPS standards. The house number may not exceed 2603 * five digits. 2604 * @param addr The string to search for addresses. 2605 * @param caseInsensitive addr Set to true to make search ignore case. 2606 * 2607 * @return the address, or if no address is found, return null. 2608 */ 2609 public static String findAddress(String addr, boolean caseInsensitive) { 2610 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2611 } 2612 2613 /* 2614 * Clear the highlighting surrounding text matches created by findAll. 2615 */ 2616 public void clearMatches() { 2617 mLastFind = ""; 2618 if (mNativeClass == 0) 2619 return; 2620 nativeSetFindIsEmpty(); 2621 invalidate(); 2622 } 2623 2624 /** 2625 * @hide 2626 */ 2627 public void notifyFindDialogDismissed() { 2628 clearMatches(); 2629 setFindIsUp(false); 2630 recordNewContentSize(mContentWidth, mContentHeight - mFindHeight, 2631 false); 2632 // Now that the dialog has been removed, ensure that we scroll to a 2633 // location that is not beyond the end of the page. 2634 pinScrollTo(mScrollX, mScrollY, false, 0); 2635 invalidate(); 2636 } 2637 2638 /** 2639 * @hide 2640 */ 2641 public void setFindDialogHeight(int height) { 2642 if (DebugFlags.WEB_VIEW) { 2643 Log.v(LOGTAG, "setFindDialogHeight height=" + height); 2644 } 2645 mFindHeight = height; 2646 } 2647 2648 /** 2649 * Query the document to see if it contains any image references. The 2650 * message object will be dispatched with arg1 being set to 1 if images 2651 * were found and 0 if the document does not reference any images. 2652 * @param response The message that will be dispatched with the result. 2653 */ 2654 public void documentHasImages(Message response) { 2655 if (response == null) { 2656 return; 2657 } 2658 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2659 } 2660 2661 @Override 2662 public void computeScroll() { 2663 if (mScroller.computeScrollOffset()) { 2664 int oldX = mScrollX; 2665 int oldY = mScrollY; 2666 int x = mScroller.getCurrX(); 2667 int y = mScroller.getCurrY(); 2668 postInvalidate(); // So we draw again 2669 if (oldX != x || oldY != y) { 2670 overscrollBy(x - oldX, y - oldY, oldX, oldY, 2671 computeMaxScrollX(), computeMaxScrollY(), 2672 getViewWidth() / 3, getViewHeight() / 3, false); 2673 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2674 } 2675 } else { 2676 super.computeScroll(); 2677 } 2678 } 2679 2680 private static int computeDuration(int dx, int dy) { 2681 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2682 int duration = distance * 1000 / STD_SPEED; 2683 return Math.min(duration, MAX_DURATION); 2684 } 2685 2686 // helper to pin the scrollBy parameters (already in view coordinates) 2687 // returns true if the scroll was changed 2688 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2689 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2690 } 2691 // helper to pin the scrollTo parameters (already in view coordinates) 2692 // returns true if the scroll was changed 2693 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2694 x = pinLocX(x); 2695 y = pinLocY(y); 2696 int dx = x - mScrollX; 2697 int dy = y - mScrollY; 2698 2699 if ((dx | dy) == 0) { 2700 return false; 2701 } 2702 if (animate) { 2703 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2704 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2705 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2706 awakenScrollBars(mScroller.getDuration()); 2707 invalidate(); 2708 } else { 2709 abortAnimation(); // just in case 2710 scrollTo(x, y); 2711 } 2712 return true; 2713 } 2714 2715 // Scale from content to view coordinates, and pin. 2716 // Also called by jni webview.cpp 2717 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2718 if (mDrawHistory) { 2719 // disallow WebView to change the scroll position as History Picture 2720 // is used in the view system. 2721 // TODO: as we switchOutDrawHistory when trackball or navigation 2722 // keys are hit, this should be safe. Right? 2723 return false; 2724 } 2725 cx = contentToViewDimension(cx); 2726 cy = contentToViewDimension(cy); 2727 if (mHeightCanMeasure) { 2728 // move our visible rect according to scroll request 2729 if (cy != 0) { 2730 Rect tempRect = new Rect(); 2731 calcOurVisibleRect(tempRect); 2732 tempRect.offset(cx, cy); 2733 requestRectangleOnScreen(tempRect); 2734 } 2735 // FIXME: We scroll horizontally no matter what because currently 2736 // ScrollView and ListView will not scroll horizontally. 2737 // FIXME: Why do we only scroll horizontally if there is no 2738 // vertical scroll? 2739// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2740 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2741 } else { 2742 return pinScrollBy(cx, cy, animate, 0); 2743 } 2744 } 2745 2746 /** 2747 * Called by CallbackProxy when the page finishes loading. 2748 * @param url The URL of the page which has finished loading. 2749 */ 2750 /* package */ void onPageFinished(String url) { 2751 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2752 // If the user is now on a different page, or has scrolled the page 2753 // past the point where the title bar is offscreen, ignore the 2754 // scroll request. 2755 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2756 && mScrollX == 0 && mScrollY == 0) { 2757 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2758 SLIDE_TITLE_DURATION); 2759 } 2760 mPageThatNeedsToSlideTitleBarOffScreen = null; 2761 } 2762 } 2763 2764 /** 2765 * The URL of a page that sent a message to scroll the title bar off screen. 2766 * 2767 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2768 * title bar off the screen. Sometimes, the scroll position is set before 2769 * the page finishes loading. Rather than scrolling while the page is still 2770 * loading, keep track of the URL and new scroll position so we can perform 2771 * the scroll once the page finishes loading. 2772 */ 2773 private String mPageThatNeedsToSlideTitleBarOffScreen; 2774 2775 /** 2776 * The destination Y scroll position to be used when the page finishes 2777 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2778 */ 2779 private int mYDistanceToSlideTitleOffScreen; 2780 2781 // scale from content to view coordinates, and pin 2782 // return true if pin caused the final x/y different than the request cx/cy, 2783 // and a future scroll may reach the request cx/cy after our size has 2784 // changed 2785 // return false if the view scroll to the exact position as it is requested, 2786 // where negative numbers are taken to mean 0 2787 private boolean setContentScrollTo(int cx, int cy) { 2788 if (mDrawHistory) { 2789 // disallow WebView to change the scroll position as History Picture 2790 // is used in the view system. 2791 // One known case where this is called is that WebCore tries to 2792 // restore the scroll position. As history Picture already uses the 2793 // saved scroll position, it is ok to skip this. 2794 return false; 2795 } 2796 int vx; 2797 int vy; 2798 if ((cx | cy) == 0) { 2799 // If the page is being scrolled to (0,0), do not add in the title 2800 // bar's height, and simply scroll to (0,0). (The only other work 2801 // in contentToView_ is to multiply, so this would not change 0.) 2802 vx = 0; 2803 vy = 0; 2804 } else { 2805 vx = contentToViewX(cx); 2806 vy = contentToViewY(cy); 2807 } 2808// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2809// vx + " " + vy + "]"); 2810 // Some mobile sites attempt to scroll the title bar off the page by 2811 // scrolling to (0,1). If we are at the top left corner of the 2812 // page, assume this is an attempt to scroll off the title bar, and 2813 // animate the title bar off screen slowly enough that the user can see 2814 // it. 2815 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2816 && mTitleBar != null) { 2817 // FIXME: 100 should be defined somewhere as our max progress. 2818 if (getProgress() < 100) { 2819 // Wait to scroll the title bar off screen until the page has 2820 // finished loading. Keep track of the URL and the destination 2821 // Y position 2822 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2823 mYDistanceToSlideTitleOffScreen = vy; 2824 } else { 2825 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2826 } 2827 // Since we are animating, we have not yet reached the desired 2828 // scroll position. Do not return true to request another attempt 2829 return false; 2830 } 2831 pinScrollTo(vx, vy, false, 0); 2832 // If the request was to scroll to a negative coordinate, treat it as if 2833 // it was a request to scroll to 0 2834 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2835 return true; 2836 } else { 2837 return false; 2838 } 2839 } 2840 2841 // scale from content to view coordinates, and pin 2842 private void spawnContentScrollTo(int cx, int cy) { 2843 if (mDrawHistory) { 2844 // disallow WebView to change the scroll position as History Picture 2845 // is used in the view system. 2846 return; 2847 } 2848 int vx = contentToViewX(cx); 2849 int vy = contentToViewY(cy); 2850 pinScrollTo(vx, vy, true, 0); 2851 } 2852 2853 /** 2854 * These are from webkit, and are in content coordinate system (unzoomed) 2855 */ 2856 private void contentSizeChanged(boolean updateLayout) { 2857 // suppress 0,0 since we usually see real dimensions soon after 2858 // this avoids drawing the prev content in a funny place. If we find a 2859 // way to consolidate these notifications, this check may become 2860 // obsolete 2861 if ((mContentWidth | mContentHeight) == 0) { 2862 return; 2863 } 2864 2865 if (mHeightCanMeasure) { 2866 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2867 || updateLayout) { 2868 requestLayout(); 2869 } 2870 } else if (mWidthCanMeasure) { 2871 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2872 || updateLayout) { 2873 requestLayout(); 2874 } 2875 } else { 2876 // If we don't request a layout, try to send our view size to the 2877 // native side to ensure that WebCore has the correct dimensions. 2878 sendViewSizeZoom(); 2879 } 2880 } 2881 2882 /** 2883 * Set the WebViewClient that will receive various notifications and 2884 * requests. This will replace the current handler. 2885 * @param client An implementation of WebViewClient. 2886 */ 2887 public void setWebViewClient(WebViewClient client) { 2888 mCallbackProxy.setWebViewClient(client); 2889 } 2890 2891 /** 2892 * Gets the WebViewClient 2893 * @return the current WebViewClient instance. 2894 * 2895 *@hide pending API council approval. 2896 */ 2897 public WebViewClient getWebViewClient() { 2898 return mCallbackProxy.getWebViewClient(); 2899 } 2900 2901 /** 2902 * Register the interface to be used when content can not be handled by 2903 * the rendering engine, and should be downloaded instead. This will replace 2904 * the current handler. 2905 * @param listener An implementation of DownloadListener. 2906 */ 2907 public void setDownloadListener(DownloadListener listener) { 2908 mCallbackProxy.setDownloadListener(listener); 2909 } 2910 2911 /** 2912 * Set the chrome handler. This is an implementation of WebChromeClient for 2913 * use in handling Javascript dialogs, favicons, titles, and the progress. 2914 * This will replace the current handler. 2915 * @param client An implementation of WebChromeClient. 2916 */ 2917 public void setWebChromeClient(WebChromeClient client) { 2918 mCallbackProxy.setWebChromeClient(client); 2919 } 2920 2921 /** 2922 * Gets the chrome handler. 2923 * @return the current WebChromeClient instance. 2924 * 2925 * @hide API council approval. 2926 */ 2927 public WebChromeClient getWebChromeClient() { 2928 return mCallbackProxy.getWebChromeClient(); 2929 } 2930 2931 /** 2932 * Set the back/forward list client. This is an implementation of 2933 * WebBackForwardListClient for handling new items and changes in the 2934 * history index. 2935 * @param client An implementation of WebBackForwardListClient. 2936 * {@hide} 2937 */ 2938 public void setWebBackForwardListClient(WebBackForwardListClient client) { 2939 mCallbackProxy.setWebBackForwardListClient(client); 2940 } 2941 2942 /** 2943 * Gets the WebBackForwardListClient. 2944 * {@hide} 2945 */ 2946 public WebBackForwardListClient getWebBackForwardListClient() { 2947 return mCallbackProxy.getWebBackForwardListClient(); 2948 } 2949 2950 /** 2951 * Set the Picture listener. This is an interface used to receive 2952 * notifications of a new Picture. 2953 * @param listener An implementation of WebView.PictureListener. 2954 */ 2955 public void setPictureListener(PictureListener listener) { 2956 mPictureListener = listener; 2957 } 2958 2959 /** 2960 * {@hide} 2961 */ 2962 /* FIXME: Debug only! Remove for SDK! */ 2963 public void externalRepresentation(Message callback) { 2964 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 2965 } 2966 2967 /** 2968 * {@hide} 2969 */ 2970 /* FIXME: Debug only! Remove for SDK! */ 2971 public void documentAsText(Message callback) { 2972 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 2973 } 2974 2975 /** 2976 * Use this function to bind an object to Javascript so that the 2977 * methods can be accessed from Javascript. 2978 * <p><strong>IMPORTANT:</strong> 2979 * <ul> 2980 * <li> Using addJavascriptInterface() allows JavaScript to control your 2981 * application. This can be a very useful feature or a dangerous security 2982 * issue. When the HTML in the WebView is untrustworthy (for example, part 2983 * or all of the HTML is provided by some person or process), then an 2984 * attacker could inject HTML that will execute your code and possibly any 2985 * code of the attacker's choosing.<br> 2986 * Do not use addJavascriptInterface() unless all of the HTML in this 2987 * WebView was written by you.</li> 2988 * <li> The Java object that is bound runs in another thread and not in 2989 * the thread that it was constructed in.</li> 2990 * </ul></p> 2991 * @param obj The class instance to bind to Javascript 2992 * @param interfaceName The name to used to expose the class in Javascript 2993 */ 2994 public void addJavascriptInterface(Object obj, String interfaceName) { 2995 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 2996 arg.mObject = obj; 2997 arg.mInterfaceName = interfaceName; 2998 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 2999 } 3000 3001 /** 3002 * Return the WebSettings object used to control the settings for this 3003 * WebView. 3004 * @return A WebSettings object that can be used to control this WebView's 3005 * settings. 3006 */ 3007 public WebSettings getSettings() { 3008 return mWebViewCore.getSettings(); 3009 } 3010 3011 /** 3012 * Use this method to inform the webview about packages that are installed 3013 * in the system. This information will be used by the 3014 * navigator.isApplicationInstalled() API. 3015 * @param packageNames is a set of package names that are known to be 3016 * installed in the system. 3017 * 3018 * @hide not a public API 3019 */ 3020 public void addPackageNames(Set<String> packageNames) { 3021 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 3022 } 3023 3024 /** 3025 * Use this method to inform the webview about single packages that are 3026 * installed in the system. This information will be used by the 3027 * navigator.isApplicationInstalled() API. 3028 * @param packageName is the name of a package that is known to be 3029 * installed in the system. 3030 * 3031 * @hide not a public API 3032 */ 3033 public void addPackageName(String packageName) { 3034 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 3035 } 3036 3037 /** 3038 * Use this method to inform the webview about packages that are uninstalled 3039 * in the system. This information will be used by the 3040 * navigator.isApplicationInstalled() API. 3041 * @param packageName is the name of a package that has been uninstalled in 3042 * the system. 3043 * 3044 * @hide not a public API 3045 */ 3046 public void removePackageName(String packageName) { 3047 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 3048 } 3049 3050 /** 3051 * Return the list of currently loaded plugins. 3052 * @return The list of currently loaded plugins. 3053 * 3054 * @deprecated This was used for Gears, which has been deprecated. 3055 */ 3056 @Deprecated 3057 public static synchronized PluginList getPluginList() { 3058 return new PluginList(); 3059 } 3060 3061 /** 3062 * @deprecated This was used for Gears, which has been deprecated. 3063 */ 3064 @Deprecated 3065 public void refreshPlugins(boolean reloadOpenPages) { } 3066 3067 //------------------------------------------------------------------------- 3068 // Override View methods 3069 //------------------------------------------------------------------------- 3070 3071 @Override 3072 protected void finalize() throws Throwable { 3073 try { 3074 destroy(); 3075 } finally { 3076 super.finalize(); 3077 } 3078 } 3079 3080 @Override 3081 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3082 if (child == mTitleBar) { 3083 // When drawing the title bar, move it horizontally to always show 3084 // at the top of the WebView. While overscroll, stick the title bar 3085 // on the top otherwise we may have two during loading, one is drawn 3086 // here, another is drawn by the Browser. 3087 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3088 if (mScrollY <= 0) { 3089 mTitleBar.offsetTopAndBottom(mScrollY - mTitleBar.getTop()); 3090 } 3091 } 3092 return super.drawChild(canvas, child, drawingTime); 3093 } 3094 3095 private void drawContent(Canvas canvas) { 3096 // Update the buttons in the picture, so when we draw the picture 3097 // to the screen, they are in the correct state. 3098 // Tell the native side if user is a) touching the screen, 3099 // b) pressing the trackball down, or c) pressing the enter key 3100 // If the cursor is on a button, we need to draw it in the pressed 3101 // state. 3102 // If mNativeClass is 0, we should not reach here, so we do not 3103 // need to check it again. 3104 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3105 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3106 || mTrackballDown || mGotCenterDown, false); 3107 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3108 } 3109 3110 @Override 3111 protected void onDraw(Canvas canvas) { 3112 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3113 if (mNativeClass == 0) { 3114 return; 3115 } 3116 3117 // if both mContentWidth and mContentHeight are 0, it means there is no 3118 // valid Picture passed to WebView yet. This can happen when WebView 3119 // just starts. Draw the background and return. 3120 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3121 canvas.drawColor(mBackgroundColor); 3122 return; 3123 } 3124 3125 int saveCount = canvas.save(); 3126 if (mInOverScrollMode && !getSettings() 3127 .getUseWebViewBackgroundForOverscrollBackground()) { 3128 if (mOverScrollBackground == null) { 3129 mOverScrollBackground = new Paint(); 3130 Bitmap bm = BitmapFactory.decodeResource( 3131 mContext.getResources(), 3132 com.android.internal.R.drawable.status_bar_background); 3133 mOverScrollBackground.setShader(new BitmapShader(bm, 3134 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3135 } 3136 int top = getTitleHeight(); 3137 // first draw the background and anchor to the top of the view 3138 canvas.save(); 3139 canvas.translate(mScrollX, mScrollY); 3140 canvas.clipRect(-mScrollX, top - mScrollY, 3141 computeHorizontalScrollRange() - mScrollX, top 3142 + computeVerticalScrollRange() - mScrollY, 3143 Region.Op.DIFFERENCE); 3144 canvas.drawPaint(mOverScrollBackground); 3145 canvas.restore(); 3146 // next clip the region for the content 3147 canvas.clipRect(0, top, computeHorizontalScrollRange(), top 3148 + computeVerticalScrollRange()); 3149 } 3150 if (mTitleBar != null) { 3151 canvas.translate(0, (int) mTitleBar.getHeight()); 3152 } 3153 if (mDragTrackerHandler == null) { 3154 drawContent(canvas); 3155 } else { 3156 if (!mDragTrackerHandler.draw(canvas)) { 3157 // sometimes the tracker doesn't draw, even though its active 3158 drawContent(canvas); 3159 } 3160 if (mDragTrackerHandler.isFinished()) { 3161 mDragTrackerHandler = null; 3162 } 3163 } 3164 canvas.restoreToCount(saveCount); 3165 3166 // Now draw the shadow. 3167 int titleH = getVisibleTitleHeight(); 3168 if (mTitleBar != null && titleH == 0) { 3169 int height = (int) (5f * getContext().getResources() 3170 .getDisplayMetrics().density); 3171 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3172 mScrollY + height); 3173 mTitleShadow.draw(canvas); 3174 } 3175 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3176 invalidate(); 3177 } 3178 mWebViewCore.signalRepaintDone(); 3179 } 3180 3181 @Override 3182 public void setLayoutParams(ViewGroup.LayoutParams params) { 3183 if (params.height == LayoutParams.WRAP_CONTENT) { 3184 mWrapContent = true; 3185 } 3186 super.setLayoutParams(params); 3187 } 3188 3189 @Override 3190 public boolean performLongClick() { 3191 // performLongClick() is the result of a delayed message. If we switch 3192 // to windows overview, the WebView will be temporarily removed from the 3193 // view system. In that case, do nothing. 3194 if (getParent() == null) return false; 3195 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3196 // Send the click so that the textfield is in focus 3197 centerKeyPressOnTextField(); 3198 rebuildWebTextView(); 3199 } 3200 if (inEditingMode()) { 3201 return mWebTextView.performLongClick(); 3202 } else { 3203 return super.performLongClick(); 3204 } 3205 } 3206 3207 boolean inAnimateZoom() { 3208 return mZoomScale != 0; 3209 } 3210 3211 /** 3212 * Need to adjust the WebTextView after a change in zoom, since mActualScale 3213 * has changed. This is especially important for password fields, which are 3214 * drawn by the WebTextView, since it conveys more information than what 3215 * webkit draws. Thus we need to reposition it to show in the correct 3216 * place. 3217 */ 3218 private boolean mNeedToAdjustWebTextView; 3219 3220 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3221 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3222 Rect vBox = contentToViewRect(contentBounds); 3223 Rect visibleRect = new Rect(); 3224 calcOurVisibleRect(visibleRect); 3225 // If the textfield is on screen, place the WebTextView in 3226 // its new place, accounting for our new scroll/zoom values, 3227 // and adjust its textsize. 3228 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3229 : visibleRect.contains(vBox)) { 3230 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3231 vBox.height()); 3232 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3233 contentToViewDimension( 3234 nativeFocusCandidateTextSize())); 3235 return true; 3236 } else { 3237 // The textfield is now off screen. The user probably 3238 // was not zooming to see the textfield better. Remove 3239 // the WebTextView. If the user types a key, and the 3240 // textfield is still in focus, we will reconstruct 3241 // the WebTextView and scroll it back on screen. 3242 mWebTextView.remove(); 3243 return false; 3244 } 3245 } 3246 3247 private void drawExtras(Canvas canvas, int extras) { 3248 // If mNativeClass is 0, we should not reach here, so we do not 3249 // need to check it again. 3250 // Currently for each draw we compute the animation values; 3251 // We may in the future decide to do that independently. 3252 if (nativeEvaluateLayersAnimations()) { 3253 // If we have unfinished (or unstarted) animations, 3254 // we ask for a repaint. 3255 invalidate(); 3256 } 3257 3258 nativeDrawExtras(canvas, extras); 3259 } 3260 3261 private void drawCoreAndCursorRing(Canvas canvas, int color, 3262 boolean drawCursorRing) { 3263 if (mDrawHistory) { 3264 canvas.scale(mActualScale, mActualScale); 3265 canvas.drawPicture(mHistoryPicture); 3266 return; 3267 } 3268 3269 boolean animateZoom = mZoomScale != 0; 3270 boolean animateScroll = ((!mScroller.isFinished() 3271 || mVelocityTracker != null) 3272 && (mTouchMode != TOUCH_DRAG_MODE || 3273 mHeldMotionless != MOTIONLESS_TRUE)) 3274 || mDeferTouchMode == TOUCH_DRAG_MODE; 3275 if (mTouchMode == TOUCH_DRAG_MODE) { 3276 if (mHeldMotionless == MOTIONLESS_PENDING) { 3277 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3278 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3279 mHeldMotionless = MOTIONLESS_FALSE; 3280 } 3281 if (mHeldMotionless == MOTIONLESS_FALSE) { 3282 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3283 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3284 mHeldMotionless = MOTIONLESS_PENDING; 3285 } 3286 } 3287 if (animateZoom) { 3288 float zoomScale; 3289 int interval = (int) (SystemClock.uptimeMillis() - mZoomStart); 3290 if (interval < ZOOM_ANIMATION_LENGTH) { 3291 float ratio = (float) interval / ZOOM_ANIMATION_LENGTH; 3292 zoomScale = 1.0f / (mInvInitialZoomScale 3293 + (mInvFinalZoomScale - mInvInitialZoomScale) * ratio); 3294 invalidate(); 3295 } else { 3296 zoomScale = mZoomScale; 3297 // set mZoomScale to be 0 as we have done animation 3298 mZoomScale = 0; 3299 WebViewCore.resumeUpdatePicture(mWebViewCore); 3300 // call invalidate() again to draw with the final filters 3301 invalidate(); 3302 if (mNeedToAdjustWebTextView) { 3303 mNeedToAdjustWebTextView = false; 3304 if (didUpdateTextViewBounds(false) 3305 && nativeFocusCandidateIsPassword()) { 3306 // If it is a password field, start drawing the 3307 // WebTextView once again. 3308 mWebTextView.setInPassword(true); 3309 } 3310 } 3311 } 3312 // calculate the intermediate scroll position. As we need to use 3313 // zoomScale, we can't use pinLocX/Y directly. Copy the logic here. 3314 float scale = zoomScale * mInvInitialZoomScale; 3315 int tx = Math.round(scale * (mInitialScrollX + mZoomCenterX) 3316 - mZoomCenterX); 3317 tx = -pinLoc(tx, getViewWidth(), Math.round(mContentWidth 3318 * zoomScale)) + mScrollX; 3319 int titleHeight = getTitleHeight(); 3320 int ty = Math.round(scale 3321 * (mInitialScrollY + mZoomCenterY - titleHeight) 3322 - (mZoomCenterY - titleHeight)); 3323 ty = -(ty <= titleHeight ? Math.max(ty, 0) : pinLoc(ty 3324 - titleHeight, getViewHeight(), Math.round(mContentHeight 3325 * zoomScale)) + titleHeight) + mScrollY; 3326 canvas.translate(tx, ty); 3327 canvas.scale(zoomScale, zoomScale); 3328 if (inEditingMode() && !mNeedToAdjustWebTextView 3329 && mZoomScale != 0) { 3330 // The WebTextView is up. Keep track of this so we can adjust 3331 // its size and placement when we finish zooming 3332 mNeedToAdjustWebTextView = true; 3333 // If it is in password mode, turn it off so it does not draw 3334 // misplaced. 3335 if (nativeFocusCandidateIsPassword()) { 3336 mWebTextView.setInPassword(false); 3337 } 3338 } 3339 } else { 3340 canvas.scale(mActualScale, mActualScale); 3341 } 3342 3343 mWebViewCore.drawContentPicture(canvas, color, 3344 (animateZoom || mPreviewZoomOnly), animateScroll); 3345 if (mNativeClass == 0) return; 3346 // decide which adornments to draw 3347 int extras = DRAW_EXTRAS_NONE; 3348 if (mFindIsUp) { 3349 // When the FindDialog is up, only draw the matches if we are not in 3350 // the process of scrolling them into view. 3351 if (!animateScroll) { 3352 extras = DRAW_EXTRAS_FIND; 3353 } 3354 } else if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3355 if (!animateZoom && !mPreviewZoomOnly) { 3356 extras = DRAW_EXTRAS_SELECTION; 3357 nativeSetSelectionRegion(mTouchSelection || mExtendSelection); 3358 nativeSetSelectionPointer(!mTouchSelection, mInvActualScale, 3359 mSelectX, mSelectY - getTitleHeight(), 3360 mExtendSelection); 3361 } 3362 } else if (drawCursorRing) { 3363 extras = DRAW_EXTRAS_CURSOR_RING; 3364 } 3365 drawExtras(canvas, extras); 3366 3367 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3368 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3369 mTouchMode = TOUCH_SHORTPRESS_MODE; 3370 HitTestResult hitTest = getHitTestResult(); 3371 if (hitTest == null 3372 || hitTest.mType == HitTestResult.UNKNOWN_TYPE) { 3373 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3374 } 3375 } 3376 } 3377 if (mFocusSizeChanged) { 3378 mFocusSizeChanged = false; 3379 // If we are zooming, this will get handled above, when the zoom 3380 // finishes. We also do not need to do this unless the WebTextView 3381 // is showing. 3382 if (!animateZoom && inEditingMode()) { 3383 didUpdateTextViewBounds(true); 3384 } 3385 } 3386 } 3387 3388 // draw history 3389 private boolean mDrawHistory = false; 3390 private Picture mHistoryPicture = null; 3391 private int mHistoryWidth = 0; 3392 private int mHistoryHeight = 0; 3393 3394 // Only check the flag, can be called from WebCore thread 3395 boolean drawHistory() { 3396 return mDrawHistory; 3397 } 3398 3399 // Should only be called in UI thread 3400 void switchOutDrawHistory() { 3401 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3402 if (mDrawHistory && mWebViewCore.pictureReady()) { 3403 mDrawHistory = false; 3404 invalidate(); 3405 int oldScrollX = mScrollX; 3406 int oldScrollY = mScrollY; 3407 mScrollX = pinLocX(mScrollX); 3408 mScrollY = pinLocY(mScrollY); 3409 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3410 mUserScroll = false; 3411 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3412 oldScrollY); 3413 } 3414 sendOurVisibleRect(); 3415 } 3416 } 3417 3418 WebViewCore.CursorData cursorData() { 3419 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3420 result.mMoveGeneration = nativeMoveGeneration(); 3421 result.mFrame = nativeCursorFramePointer(); 3422 Point position = nativeCursorPosition(); 3423 result.mX = position.x; 3424 result.mY = position.y; 3425 return result; 3426 } 3427 3428 /** 3429 * Delete text from start to end in the focused textfield. If there is no 3430 * focus, or if start == end, silently fail. If start and end are out of 3431 * order, swap them. 3432 * @param start Beginning of selection to delete. 3433 * @param end End of selection to delete. 3434 */ 3435 /* package */ void deleteSelection(int start, int end) { 3436 mTextGeneration++; 3437 WebViewCore.TextSelectionData data 3438 = new WebViewCore.TextSelectionData(start, end); 3439 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3440 data); 3441 } 3442 3443 /** 3444 * Set the selection to (start, end) in the focused textfield. If start and 3445 * end are out of order, swap them. 3446 * @param start Beginning of selection. 3447 * @param end End of selection. 3448 */ 3449 /* package */ void setSelection(int start, int end) { 3450 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3451 } 3452 3453 @Override 3454 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3455 InputConnection connection = super.onCreateInputConnection(outAttrs); 3456 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3457 return connection; 3458 } 3459 3460 /** 3461 * Called in response to a message from webkit telling us that the soft 3462 * keyboard should be launched. 3463 */ 3464 private void displaySoftKeyboard(boolean isTextView) { 3465 InputMethodManager imm = (InputMethodManager) 3466 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3467 3468 // bring it back to the default scale so that user can enter text 3469 boolean zoom = mActualScale < mDefaultScale; 3470 if (zoom) { 3471 mInZoomOverview = false; 3472 mZoomCenterX = mLastTouchX; 3473 mZoomCenterY = mLastTouchY; 3474 // do not change text wrap scale so that there is no reflow 3475 setNewZoomScale(mDefaultScale, false, false); 3476 } 3477 if (isTextView) { 3478 rebuildWebTextView(); 3479 if (inEditingMode()) { 3480 imm.showSoftInput(mWebTextView, 0); 3481 if (zoom) { 3482 didUpdateTextViewBounds(true); 3483 } 3484 return; 3485 } 3486 } 3487 // Used by plugins. 3488 // Also used if the navigation cache is out of date, and 3489 // does not recognize that a textfield is in focus. In that 3490 // case, use WebView as the targeted view. 3491 // see http://b/issue?id=2457459 3492 imm.showSoftInput(this, 0); 3493 } 3494 3495 // Called by WebKit to instruct the UI to hide the keyboard 3496 private void hideSoftKeyboard() { 3497 InputMethodManager imm = (InputMethodManager) 3498 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3499 3500 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3501 } 3502 3503 /* 3504 * This method checks the current focus and cursor and potentially rebuilds 3505 * mWebTextView to have the appropriate properties, such as password, 3506 * multiline, and what text it contains. It also removes it if necessary. 3507 */ 3508 /* package */ void rebuildWebTextView() { 3509 // If the WebView does not have focus, do nothing until it gains focus. 3510 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3511 return; 3512 } 3513 boolean alreadyThere = inEditingMode(); 3514 // inEditingMode can only return true if mWebTextView is non-null, 3515 // so we can safely call remove() if (alreadyThere) 3516 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3517 if (alreadyThere) { 3518 mWebTextView.remove(); 3519 } 3520 return; 3521 } 3522 // At this point, we know we have found an input field, so go ahead 3523 // and create the WebTextView if necessary. 3524 if (mWebTextView == null) { 3525 mWebTextView = new WebTextView(mContext, WebView.this); 3526 // Initialize our generation number. 3527 mTextGeneration = 0; 3528 } 3529 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3530 contentToViewDimension(nativeFocusCandidateTextSize())); 3531 Rect visibleRect = new Rect(); 3532 calcOurContentVisibleRect(visibleRect); 3533 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3534 // should be in content coordinates. 3535 Rect bounds = nativeFocusCandidateNodeBounds(); 3536 Rect vBox = contentToViewRect(bounds); 3537 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3538 if (!Rect.intersects(bounds, visibleRect)) { 3539 mWebTextView.bringIntoView(); 3540 } 3541 String text = nativeFocusCandidateText(); 3542 int nodePointer = nativeFocusCandidatePointer(); 3543 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3544 // It is possible that we have the same textfield, but it has moved, 3545 // i.e. In the case of opening/closing the screen. 3546 // In that case, we need to set the dimensions, but not the other 3547 // aspects. 3548 // If the text has been changed by webkit, update it. However, if 3549 // there has been more UI text input, ignore it. We will receive 3550 // another update when that text is recognized. 3551 if (text != null && !text.equals(mWebTextView.getText().toString()) 3552 && nativeTextGeneration() == mTextGeneration) { 3553 mWebTextView.setTextAndKeepSelection(text); 3554 } 3555 } else { 3556 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3557 Gravity.RIGHT : Gravity.NO_GRAVITY); 3558 // This needs to be called before setType, which may call 3559 // requestFormData, and it needs to have the correct nodePointer. 3560 mWebTextView.setNodePointer(nodePointer); 3561 mWebTextView.setType(nativeFocusCandidateType()); 3562 if (null == text) { 3563 if (DebugFlags.WEB_VIEW) { 3564 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3565 } 3566 text = ""; 3567 } 3568 mWebTextView.setTextAndKeepSelection(text); 3569 InputMethodManager imm = InputMethodManager.peekInstance(); 3570 if (imm != null && imm.isActive(mWebTextView)) { 3571 imm.restartInput(mWebTextView); 3572 } 3573 } 3574 mWebTextView.requestFocus(); 3575 } 3576 3577 /** 3578 * Called by WebTextView to find saved form data associated with the 3579 * textfield 3580 * @param name Name of the textfield. 3581 * @param nodePointer Pointer to the node of the textfield, so it can be 3582 * compared to the currently focused textfield when the data is 3583 * retrieved. 3584 */ 3585 /* package */ void requestFormData(String name, int nodePointer) { 3586 if (mWebViewCore.getSettings().getSaveFormData()) { 3587 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3588 update.arg1 = nodePointer; 3589 RequestFormData updater = new RequestFormData(name, getUrl(), 3590 update); 3591 Thread t = new Thread(updater); 3592 t.start(); 3593 } 3594 } 3595 3596 /** 3597 * Pass a message to find out the <label> associated with the <input> 3598 * identified by nodePointer 3599 * @param framePointer Pointer to the frame containing the <input> node 3600 * @param nodePointer Pointer to the node for which a <label> is desired. 3601 */ 3602 /* package */ void requestLabel(int framePointer, int nodePointer) { 3603 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3604 nodePointer); 3605 } 3606 3607 /* 3608 * This class requests an Adapter for the WebTextView which shows past 3609 * entries stored in the database. It is a Runnable so that it can be done 3610 * in its own thread, without slowing down the UI. 3611 */ 3612 private class RequestFormData implements Runnable { 3613 private String mName; 3614 private String mUrl; 3615 private Message mUpdateMessage; 3616 3617 public RequestFormData(String name, String url, Message msg) { 3618 mName = name; 3619 mUrl = url; 3620 mUpdateMessage = msg; 3621 } 3622 3623 public void run() { 3624 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3625 if (pastEntries.size() > 0) { 3626 AutoCompleteAdapter adapter = new 3627 AutoCompleteAdapter(mContext, pastEntries); 3628 mUpdateMessage.obj = adapter; 3629 mUpdateMessage.sendToTarget(); 3630 } 3631 } 3632 } 3633 3634 /** 3635 * Dump the display tree to "/sdcard/displayTree.txt" 3636 * 3637 * @hide debug only 3638 */ 3639 public void dumpDisplayTree() { 3640 nativeDumpDisplayTree(getUrl()); 3641 } 3642 3643 /** 3644 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3645 * "/sdcard/domTree.txt" 3646 * 3647 * @hide debug only 3648 */ 3649 public void dumpDomTree(boolean toFile) { 3650 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3651 } 3652 3653 /** 3654 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3655 * to "/sdcard/renderTree.txt" 3656 * 3657 * @hide debug only 3658 */ 3659 public void dumpRenderTree(boolean toFile) { 3660 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3661 } 3662 3663 /** 3664 * Dump the V8 counters to standard output. 3665 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3666 * true. Otherwise, this will do nothing. 3667 * 3668 * @hide debug only 3669 */ 3670 public void dumpV8Counters() { 3671 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3672 } 3673 3674 // This is used to determine long press with the center key. Does not 3675 // affect long press with the trackball/touch. 3676 private boolean mGotCenterDown = false; 3677 3678 @Override 3679 public boolean onKeyDown(int keyCode, KeyEvent event) { 3680 if (DebugFlags.WEB_VIEW) { 3681 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3682 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3683 } 3684 3685 if (mNativeClass == 0) { 3686 return false; 3687 } 3688 3689 // do this hack up front, so it always works, regardless of touch-mode 3690 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3691 mAutoRedraw = !mAutoRedraw; 3692 if (mAutoRedraw) { 3693 invalidate(); 3694 } 3695 return true; 3696 } 3697 3698 // Bubble up the key event if 3699 // 1. it is a system key; or 3700 // 2. the host application wants to handle it; 3701 if (event.isSystem() 3702 || mCallbackProxy.uiOverrideKeyEvent(event)) { 3703 return false; 3704 } 3705 3706 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3707 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3708 if (nativeFocusIsPlugin()) { 3709 mShiftIsPressed = true; 3710 } else if (!nativeCursorWantsKeyEvents() && !mShiftIsPressed) { 3711 setUpSelectXY(); 3712 } 3713 } 3714 3715 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3716 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3717 switchOutDrawHistory(); 3718 if (nativeFocusIsPlugin()) { 3719 letPluginHandleNavKey(keyCode, event.getEventTime(), true); 3720 return true; 3721 } 3722 if (mShiftIsPressed) { 3723 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3724 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3725 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3726 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3727 int multiplier = event.getRepeatCount() + 1; 3728 moveSelection(xRate * multiplier, yRate * multiplier); 3729 return true; 3730 } 3731 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 3732 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3733 return true; 3734 } 3735 // Bubble up the key event as WebView doesn't handle it 3736 return false; 3737 } 3738 3739 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3740 switchOutDrawHistory(); 3741 if (event.getRepeatCount() == 0) { 3742 if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3743 return true; // discard press if copy in progress 3744 } 3745 mGotCenterDown = true; 3746 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3747 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3748 // Already checked mNativeClass, so we do not need to check it 3749 // again. 3750 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3751 return true; 3752 } 3753 // Bubble up the key event as WebView doesn't handle it 3754 return false; 3755 } 3756 3757 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3758 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3759 // turn off copy select if a shift-key combo is pressed 3760 mExtendSelection = mShiftIsPressed = false; 3761 if (mTouchMode == TOUCH_SELECT_MODE) { 3762 mTouchMode = TOUCH_INIT_MODE; 3763 } 3764 } 3765 3766 if (getSettings().getNavDump()) { 3767 switch (keyCode) { 3768 case KeyEvent.KEYCODE_4: 3769 dumpDisplayTree(); 3770 break; 3771 case KeyEvent.KEYCODE_5: 3772 case KeyEvent.KEYCODE_6: 3773 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3774 break; 3775 case KeyEvent.KEYCODE_7: 3776 case KeyEvent.KEYCODE_8: 3777 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3778 break; 3779 case KeyEvent.KEYCODE_9: 3780 nativeInstrumentReport(); 3781 return true; 3782 } 3783 } 3784 3785 if (nativeCursorIsTextInput()) { 3786 // This message will put the node in focus, for the DOM's notion 3787 // of focus, and make the focuscontroller active 3788 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3789 nativeCursorNodePointer()); 3790 // This will bring up the WebTextView and put it in focus, for 3791 // our view system's notion of focus 3792 rebuildWebTextView(); 3793 // Now we need to pass the event to it 3794 if (inEditingMode()) { 3795 mWebTextView.setDefaultSelection(); 3796 return mWebTextView.dispatchKeyEvent(event); 3797 } 3798 } else if (nativeHasFocusNode()) { 3799 // In this case, the cursor is not on a text input, but the focus 3800 // might be. Check it, and if so, hand over to the WebTextView. 3801 rebuildWebTextView(); 3802 if (inEditingMode()) { 3803 mWebTextView.setDefaultSelection(); 3804 return mWebTextView.dispatchKeyEvent(event); 3805 } 3806 } 3807 3808 // TODO: should we pass all the keys to DOM or check the meta tag 3809 if (nativeCursorWantsKeyEvents() || true) { 3810 // pass the key to DOM 3811 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3812 // return true as DOM handles the key 3813 return true; 3814 } 3815 3816 // Bubble up the key event as WebView doesn't handle it 3817 return false; 3818 } 3819 3820 @Override 3821 public boolean onKeyUp(int keyCode, KeyEvent event) { 3822 if (DebugFlags.WEB_VIEW) { 3823 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3824 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3825 } 3826 3827 if (mNativeClass == 0) { 3828 return false; 3829 } 3830 3831 // special CALL handling when cursor node's href is "tel:XXX" 3832 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3833 String text = nativeCursorText(); 3834 if (!nativeCursorIsTextInput() && text != null 3835 && text.startsWith(SCHEME_TEL)) { 3836 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3837 getContext().startActivity(intent); 3838 return true; 3839 } 3840 } 3841 3842 // Bubble up the key event if 3843 // 1. it is a system key; or 3844 // 2. the host application wants to handle it; 3845 if (event.isSystem() || mCallbackProxy.uiOverrideKeyEvent(event)) { 3846 return false; 3847 } 3848 3849 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3850 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3851 if (nativeFocusIsPlugin()) { 3852 mShiftIsPressed = false; 3853 } else if (commitCopy()) { 3854 return true; 3855 } 3856 } 3857 3858 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3859 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3860 if (nativeFocusIsPlugin()) { 3861 letPluginHandleNavKey(keyCode, event.getEventTime(), false); 3862 return true; 3863 } 3864 // always handle the navigation keys in the UI thread 3865 // Bubble up the key event as WebView doesn't handle it 3866 return false; 3867 } 3868 3869 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3870 // remove the long press message first 3871 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3872 mGotCenterDown = false; 3873 3874 if (mShiftIsPressed && !nativeFocusIsPlugin()) { 3875 if (mExtendSelection) { 3876 commitCopy(); 3877 } else { 3878 mExtendSelection = true; 3879 invalidate(); // draw the i-beam instead of the arrow 3880 } 3881 return true; // discard press if copy in progress 3882 } 3883 3884 // perform the single click 3885 Rect visibleRect = sendOurVisibleRect(); 3886 // Note that sendOurVisibleRect calls viewToContent, so the 3887 // coordinates should be in content coordinates. 3888 if (!nativeCursorIntersects(visibleRect)) { 3889 return false; 3890 } 3891 WebViewCore.CursorData data = cursorData(); 3892 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3893 playSoundEffect(SoundEffectConstants.CLICK); 3894 if (nativeCursorIsTextInput()) { 3895 rebuildWebTextView(); 3896 centerKeyPressOnTextField(); 3897 if (inEditingMode()) { 3898 mWebTextView.setDefaultSelection(); 3899 } 3900 return true; 3901 } 3902 clearTextEntry(true); 3903 nativeSetFollowedLink(true); 3904 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 3905 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 3906 nativeCursorNodePointer()); 3907 } 3908 return true; 3909 } 3910 3911 // TODO: should we pass all the keys to DOM or check the meta tag 3912 if (nativeCursorWantsKeyEvents() || true) { 3913 // pass the key to DOM 3914 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 3915 // return true as DOM handles the key 3916 return true; 3917 } 3918 3919 // Bubble up the key event as WebView doesn't handle it 3920 return false; 3921 } 3922 3923 private void setUpSelectXY() { 3924 mExtendSelection = false; 3925 mShiftIsPressed = true; 3926 if (nativeHasCursorNode()) { 3927 Rect rect = nativeCursorNodeBounds(); 3928 mSelectX = contentToViewX(rect.left); 3929 mSelectY = contentToViewY(rect.top); 3930 } else if (mLastTouchY > getVisibleTitleHeight()) { 3931 mSelectX = mScrollX + (int) mLastTouchX; 3932 mSelectY = mScrollY + (int) mLastTouchY; 3933 } else { 3934 mSelectX = mScrollX + getViewWidth() / 2; 3935 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 3936 } 3937 nativeHideCursor(); 3938 } 3939 3940 /** 3941 * Use this method to put the WebView into text selection mode. 3942 * Do not rely on this functionality; it will be deprecated in the future. 3943 */ 3944 public void emulateShiftHeld() { 3945 if (0 == mNativeClass) return; // client isn't initialized 3946 setUpSelectXY(); 3947 } 3948 3949 private boolean commitCopy() { 3950 boolean copiedSomething = false; 3951 if (mExtendSelection) { 3952 String selection = nativeGetSelection(); 3953 if (selection != "") { 3954 if (DebugFlags.WEB_VIEW) { 3955 Log.v(LOGTAG, "commitCopy \"" + selection + "\""); 3956 } 3957 Toast.makeText(mContext 3958 , com.android.internal.R.string.text_copied 3959 , Toast.LENGTH_SHORT).show(); 3960 copiedSomething = true; 3961 try { 3962 IClipboard clip = IClipboard.Stub.asInterface( 3963 ServiceManager.getService("clipboard")); 3964 clip.setClipboardText(selection); 3965 } catch (android.os.RemoteException e) { 3966 Log.e(LOGTAG, "Clipboard failed", e); 3967 } 3968 } 3969 mExtendSelection = false; 3970 } 3971 mShiftIsPressed = false; 3972 invalidate(); // remove selection region and pointer 3973 if (mTouchMode == TOUCH_SELECT_MODE) { 3974 mTouchMode = TOUCH_INIT_MODE; 3975 } 3976 return copiedSomething; 3977 } 3978 3979 @Override 3980 protected void onAttachedToWindow() { 3981 super.onAttachedToWindow(); 3982 if (hasWindowFocus()) onWindowFocusChanged(true); 3983 } 3984 3985 @Override 3986 protected void onDetachedFromWindow() { 3987 clearTextEntry(false); 3988 super.onDetachedFromWindow(); 3989 // Clean up the zoom controller 3990 mZoomButtonsController.setVisible(false); 3991 } 3992 3993 /** 3994 * @deprecated WebView no longer needs to implement 3995 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 3996 */ 3997 @Deprecated 3998 public void onChildViewAdded(View parent, View child) {} 3999 4000 /** 4001 * @deprecated WebView no longer needs to implement 4002 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4003 */ 4004 @Deprecated 4005 public void onChildViewRemoved(View p, View child) {} 4006 4007 /** 4008 * @deprecated WebView should not have implemented 4009 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4010 * does nothing now. 4011 */ 4012 @Deprecated 4013 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4014 } 4015 4016 // To avoid drawing the cursor ring, and remove the TextView when our window 4017 // loses focus. 4018 @Override 4019 public void onWindowFocusChanged(boolean hasWindowFocus) { 4020 if (hasWindowFocus) { 4021 if (hasFocus()) { 4022 // If our window regained focus, and we have focus, then begin 4023 // drawing the cursor ring 4024 mDrawCursorRing = true; 4025 if (mNativeClass != 0) { 4026 nativeRecordButtons(true, false, true); 4027 if (inEditingMode()) { 4028 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 4029 } 4030 } 4031 } else { 4032 // If our window gained focus, but we do not have it, do not 4033 // draw the cursor ring. 4034 mDrawCursorRing = false; 4035 // We do not call nativeRecordButtons here because we assume 4036 // that when we lost focus, or window focus, it got called with 4037 // false for the first parameter 4038 } 4039 } else { 4040 if (getSettings().getBuiltInZoomControls() && !mZoomButtonsController.isVisible()) { 4041 /* 4042 * The zoom controls come in their own window, so our window 4043 * loses focus. Our policy is to not draw the cursor ring if 4044 * our window is not focused, but this is an exception since 4045 * the user can still navigate the web page with the zoom 4046 * controls showing. 4047 */ 4048 // If our window has lost focus, stop drawing the cursor ring 4049 mDrawCursorRing = false; 4050 } 4051 mGotKeyDown = false; 4052 mShiftIsPressed = false; 4053 if (mNativeClass != 0) { 4054 nativeRecordButtons(false, false, true); 4055 } 4056 setFocusControllerInactive(); 4057 } 4058 invalidate(); 4059 super.onWindowFocusChanged(hasWindowFocus); 4060 } 4061 4062 /* 4063 * Pass a message to WebCore Thread, telling the WebCore::Page's 4064 * FocusController to be "inactive" so that it will 4065 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4066 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4067 */ 4068 /* package */ void setFocusControllerInactive() { 4069 // Do not need to also check whether mWebViewCore is null, because 4070 // mNativeClass is only set if mWebViewCore is non null 4071 if (mNativeClass == 0) return; 4072 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 4073 } 4074 4075 @Override 4076 protected void onFocusChanged(boolean focused, int direction, 4077 Rect previouslyFocusedRect) { 4078 if (DebugFlags.WEB_VIEW) { 4079 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4080 } 4081 if (focused) { 4082 // When we regain focus, if we have window focus, resume drawing 4083 // the cursor ring 4084 if (hasWindowFocus()) { 4085 mDrawCursorRing = true; 4086 if (mNativeClass != 0) { 4087 nativeRecordButtons(true, false, true); 4088 } 4089 //} else { 4090 // The WebView has gained focus while we do not have 4091 // windowfocus. When our window lost focus, we should have 4092 // called nativeRecordButtons(false...) 4093 } 4094 } else { 4095 // When we lost focus, unless focus went to the TextView (which is 4096 // true if we are in editing mode), stop drawing the cursor ring. 4097 if (!inEditingMode()) { 4098 mDrawCursorRing = false; 4099 if (mNativeClass != 0) { 4100 nativeRecordButtons(false, false, true); 4101 } 4102 setFocusControllerInactive(); 4103 } 4104 mGotKeyDown = false; 4105 } 4106 4107 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4108 } 4109 4110 /** 4111 * @hide 4112 */ 4113 @Override 4114 protected boolean setFrame(int left, int top, int right, int bottom) { 4115 boolean changed = super.setFrame(left, top, right, bottom); 4116 if (!changed && mHeightCanMeasure) { 4117 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4118 // in WebViewCore after we get the first layout. We do call 4119 // requestLayout() when we get contentSizeChanged(). But the View 4120 // system won't call onSizeChanged if the dimension is not changed. 4121 // In this case, we need to call sendViewSizeZoom() explicitly to 4122 // notify the WebKit about the new dimensions. 4123 sendViewSizeZoom(); 4124 } 4125 return changed; 4126 } 4127 4128 private static class PostScale implements Runnable { 4129 final WebView mWebView; 4130 final boolean mUpdateTextWrap; 4131 4132 public PostScale(WebView webView, boolean updateTextWrap) { 4133 mWebView = webView; 4134 mUpdateTextWrap = updateTextWrap; 4135 } 4136 4137 public void run() { 4138 if (mWebView.mWebViewCore != null) { 4139 // we always force, in case our height changed, in which case we 4140 // still want to send the notification over to webkit. 4141 mWebView.setNewZoomScale(mWebView.mActualScale, 4142 mUpdateTextWrap, true); 4143 // update the zoom buttons as the scale can be changed 4144 if (mWebView.getSettings().getBuiltInZoomControls()) { 4145 mWebView.updateZoomButtonsEnabled(); 4146 } 4147 } 4148 } 4149 } 4150 4151 @Override 4152 protected void onSizeChanged(int w, int h, int ow, int oh) { 4153 super.onSizeChanged(w, h, ow, oh); 4154 // Center zooming to the center of the screen. 4155 if (mZoomScale == 0) { // unless we're already zooming 4156 // To anchor at top left corner. 4157 mZoomCenterX = 0; 4158 mZoomCenterY = getVisibleTitleHeight(); 4159 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4160 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4161 } 4162 4163 // adjust the max viewport width depending on the view dimensions. This 4164 // is to ensure the scaling is not going insane. So do not shrink it if 4165 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4166 int newMaxViewportWidth = (int) (Math.max(w, h) / DEFAULT_MIN_ZOOM_SCALE); 4167 if (newMaxViewportWidth > sMaxViewportWidth) { 4168 sMaxViewportWidth = newMaxViewportWidth; 4169 } 4170 4171 // update mMinZoomScale if the minimum zoom scale is not fixed 4172 if (!mMinZoomScaleFixed) { 4173 // when change from narrow screen to wide screen, the new viewWidth 4174 // can be wider than the old content width. We limit the minimum 4175 // scale to 1.0f. The proper minimum scale will be calculated when 4176 // the new picture shows up. 4177 mMinZoomScale = Math.min(1.0f, (float) getViewWidth() 4178 / (mDrawHistory ? mHistoryPicture.getWidth() 4179 : mZoomOverviewWidth)); 4180 if (mInitialScaleInPercent > 0) { 4181 // limit the minZoomScale to the initialScale if it is set 4182 float initialScale = mInitialScaleInPercent / 100.0f; 4183 if (mMinZoomScale > initialScale) { 4184 mMinZoomScale = initialScale; 4185 } 4186 } 4187 } 4188 4189 // onSizeChanged() is called during WebView layout. And any 4190 // requestLayout() is blocked during layout. As setNewZoomScale() will 4191 // call its child View to reposition itself through ViewManager's 4192 // scaleAll(), we need to post a Runnable to ensure requestLayout(). 4193 // <b/> 4194 // only update the text wrap scale if width changed. 4195 post(new PostScale(this, w != ow)); 4196 } 4197 4198 @Override 4199 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4200 super.onScrollChanged(l, t, oldl, oldt); 4201 sendOurVisibleRect(); 4202 } 4203 4204 @Override 4205 public boolean dispatchKeyEvent(KeyEvent event) { 4206 boolean dispatch = true; 4207 4208 // Textfields and plugins need to receive the shift up key even if 4209 // another key was released while the shift key was held down. 4210 if (!inEditingMode() && (mNativeClass == 0 || !nativeFocusIsPlugin())) { 4211 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4212 mGotKeyDown = true; 4213 } else { 4214 if (!mGotKeyDown) { 4215 /* 4216 * We got a key up for which we were not the recipient of 4217 * the original key down. Don't give it to the view. 4218 */ 4219 dispatch = false; 4220 } 4221 mGotKeyDown = false; 4222 } 4223 } 4224 4225 if (dispatch) { 4226 return super.dispatchKeyEvent(event); 4227 } else { 4228 // We didn't dispatch, so let something else handle the key 4229 return false; 4230 } 4231 } 4232 4233 // Here are the snap align logic: 4234 // 1. If it starts nearly horizontally or vertically, snap align; 4235 // 2. If there is a dramitic direction change, let it go; 4236 // 3. If there is a same direction back and forth, lock it. 4237 4238 // adjustable parameters 4239 private int mMinLockSnapReverseDistance; 4240 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4241 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4242 4243 private static int sign(float x) { 4244 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4245 } 4246 4247 // if the page can scroll <= this value, we won't allow the drag tracker 4248 // to have any effect. 4249 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4250 4251 private class DragTrackerHandler { 4252 private final DragTracker mProxy; 4253 private final float mStartY, mStartX; 4254 private final float mMinDY, mMinDX; 4255 private final float mMaxDY, mMaxDX; 4256 private float mCurrStretchY, mCurrStretchX; 4257 private int mSX, mSY; 4258 private Interpolator mInterp; 4259 private float[] mXY = new float[2]; 4260 4261 // inner (non-state) classes can't have enums :( 4262 private static final int DRAGGING_STATE = 0; 4263 private static final int ANIMATING_STATE = 1; 4264 private static final int FINISHED_STATE = 2; 4265 private int mState; 4266 4267 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4268 mProxy = proxy; 4269 4270 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4271 int viewTop = getScrollY(); 4272 int viewBottom = viewTop + getHeight(); 4273 4274 mStartY = y; 4275 mMinDY = -viewTop; 4276 mMaxDY = docBottom - viewBottom; 4277 4278 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4279 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4280 " up/down= " + mMinDY + " " + mMaxDY); 4281 } 4282 4283 int docRight = computeHorizontalScrollRange(); 4284 int viewLeft = getScrollX(); 4285 int viewRight = viewLeft + getWidth(); 4286 mStartX = x; 4287 mMinDX = -viewLeft; 4288 mMaxDX = docRight - viewRight; 4289 4290 mState = DRAGGING_STATE; 4291 mProxy.onStartDrag(x, y); 4292 4293 // ensure we buildBitmap at least once 4294 mSX = -99999; 4295 } 4296 4297 private float computeStretch(float delta, float min, float max) { 4298 float stretch = 0; 4299 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4300 if (delta < min) { 4301 stretch = delta - min; 4302 } else if (delta > max) { 4303 stretch = delta - max; 4304 } 4305 } 4306 return stretch; 4307 } 4308 4309 public void dragTo(float x, float y) { 4310 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4311 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4312 4313 if ((mSnapScrollMode & SNAP_X) != 0) { 4314 sy = 0; 4315 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4316 sx = 0; 4317 } 4318 4319 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4320 mCurrStretchX = sx; 4321 mCurrStretchY = sy; 4322 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4323 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4324 " " + sy); 4325 } 4326 if (mProxy.onStretchChange(sx, sy)) { 4327 invalidate(); 4328 } 4329 } 4330 } 4331 4332 public void stopDrag() { 4333 final int DURATION = 200; 4334 int now = (int)SystemClock.uptimeMillis(); 4335 mInterp = new Interpolator(2); 4336 mXY[0] = mCurrStretchX; 4337 mXY[1] = mCurrStretchY; 4338 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4339 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4340 mInterp.setKeyFrame(0, now, mXY, blend); 4341 float[] zerozero = new float[] { 0, 0 }; 4342 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4343 mState = ANIMATING_STATE; 4344 4345 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4346 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4347 } 4348 } 4349 4350 // Call this after each draw. If it ruturns null, the tracker is done 4351 public boolean isFinished() { 4352 return mState == FINISHED_STATE; 4353 } 4354 4355 private int hiddenHeightOfTitleBar() { 4356 return getTitleHeight() - getVisibleTitleHeight(); 4357 } 4358 4359 // need a way to know if 565 or 8888 is the right config for 4360 // capturing the display and giving it to the drag proxy 4361 private Bitmap.Config offscreenBitmapConfig() { 4362 // hard code 565 for now 4363 return Bitmap.Config.RGB_565; 4364 } 4365 4366 /* If the tracker draws, then this returns true, otherwise it will 4367 return false, and draw nothing. 4368 */ 4369 public boolean draw(Canvas canvas) { 4370 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4371 int sx = getScrollX(); 4372 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4373 if (mSX != sx || mSY != sy) { 4374 buildBitmap(sx, sy); 4375 mSX = sx; 4376 mSY = sy; 4377 } 4378 4379 if (mState == ANIMATING_STATE) { 4380 Interpolator.Result result = mInterp.timeToValues(mXY); 4381 if (result == Interpolator.Result.FREEZE_END) { 4382 mState = FINISHED_STATE; 4383 return false; 4384 } else { 4385 mProxy.onStretchChange(mXY[0], mXY[1]); 4386 invalidate(); 4387 // fall through to the draw 4388 } 4389 } 4390 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4391 canvas.translate(sx, sy); 4392 mProxy.onDraw(canvas); 4393 canvas.restoreToCount(count); 4394 return true; 4395 } 4396 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4397 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4398 mCurrStretchX + " " + mCurrStretchY); 4399 } 4400 return false; 4401 } 4402 4403 private void buildBitmap(int sx, int sy) { 4404 int w = getWidth(); 4405 int h = getViewHeight(); 4406 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4407 Canvas canvas = new Canvas(bm); 4408 canvas.translate(-sx, -sy); 4409 drawContent(canvas); 4410 4411 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4412 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4413 " " + sy + " " + w + " " + h); 4414 } 4415 mProxy.onBitmapChange(bm); 4416 } 4417 } 4418 4419 /** @hide */ 4420 public static class DragTracker { 4421 public void onStartDrag(float x, float y) {} 4422 public boolean onStretchChange(float sx, float sy) { 4423 // return true to have us inval the view 4424 return false; 4425 } 4426 public void onStopDrag() {} 4427 public void onBitmapChange(Bitmap bm) {} 4428 public void onDraw(Canvas canvas) {} 4429 } 4430 4431 /** @hide */ 4432 public DragTracker getDragTracker() { 4433 return mDragTracker; 4434 } 4435 4436 /** @hide */ 4437 public void setDragTracker(DragTracker tracker) { 4438 mDragTracker = tracker; 4439 } 4440 4441 private DragTracker mDragTracker; 4442 private DragTrackerHandler mDragTrackerHandler; 4443 4444 private class ScaleDetectorListener implements 4445 ScaleGestureDetector.OnScaleGestureListener { 4446 4447 public boolean onScaleBegin(ScaleGestureDetector detector) { 4448 // cancel the single touch handling 4449 cancelTouch(); 4450 if (mZoomButtonsController.isVisible()) { 4451 mZoomButtonsController.setVisible(false); 4452 } 4453 // reset the zoom overview mode so that the page won't auto grow 4454 mInZoomOverview = false; 4455 // If it is in password mode, turn it off so it does not draw 4456 // misplaced. 4457 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4458 mWebTextView.setInPassword(false); 4459 } 4460 return true; 4461 } 4462 4463 public void onScaleEnd(ScaleGestureDetector detector) { 4464 if (mPreviewZoomOnly) { 4465 mPreviewZoomOnly = false; 4466 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 4467 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 4468 // don't reflow when zoom in; when zoom out, do reflow if the 4469 // new scale is almost minimum scale; 4470 boolean reflowNow = (mActualScale - mMinZoomScale 4471 <= MINIMUM_SCALE_INCREMENT) 4472 || ((mActualScale <= 0.8 * mTextWrapScale)); 4473 // force zoom after mPreviewZoomOnly is set to false so that the 4474 // new view size will be passed to the WebKit 4475 setNewZoomScale(mActualScale, reflowNow, true); 4476 // call invalidate() to draw without zoom filter 4477 invalidate(); 4478 } 4479 // adjust the edit text view if needed 4480 if (inEditingMode() && didUpdateTextViewBounds(false) 4481 && nativeFocusCandidateIsPassword()) { 4482 // If it is a password field, start drawing the 4483 // WebTextView once again. 4484 mWebTextView.setInPassword(true); 4485 } 4486 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as it 4487 // may trigger the unwanted click, can't use TOUCH_DRAG_MODE as it 4488 // may trigger the unwanted fling. 4489 mTouchMode = TOUCH_PINCH_DRAG; 4490 mConfirmMove = true; 4491 startTouch(detector.getFocusX(), detector.getFocusY(), 4492 mLastTouchTime); 4493 } 4494 4495 public boolean onScale(ScaleGestureDetector detector) { 4496 float scale = (float) (Math.round(detector.getScaleFactor() 4497 * mActualScale * 100) / 100.0); 4498 if (Math.abs(scale - mActualScale) >= MINIMUM_SCALE_INCREMENT) { 4499 mPreviewZoomOnly = true; 4500 // limit the scale change per step 4501 if (scale > mActualScale) { 4502 scale = Math.min(scale, mActualScale * 1.25f); 4503 } else { 4504 scale = Math.max(scale, mActualScale * 0.8f); 4505 } 4506 mZoomCenterX = detector.getFocusX(); 4507 mZoomCenterY = detector.getFocusY(); 4508 setNewZoomScale(scale, false, false); 4509 invalidate(); 4510 return true; 4511 } 4512 return false; 4513 } 4514 } 4515 4516 private boolean hitFocusedPlugin(int contentX, int contentY) { 4517 if (DebugFlags.WEB_VIEW) { 4518 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4519 Rect r = nativeFocusNodeBounds(); 4520 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4521 + ", " + r.right + ", " + r.bottom + ")"); 4522 } 4523 return nativeFocusIsPlugin() 4524 && nativeFocusNodeBounds().contains(contentX, contentY); 4525 } 4526 4527 private boolean shouldForwardTouchEvent() { 4528 return mFullScreenHolder != null || (mForwardTouchEvents 4529 && mTouchMode != TOUCH_SELECT_MODE 4530 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4531 } 4532 4533 private boolean inFullScreenMode() { 4534 return mFullScreenHolder != null; 4535 } 4536 4537 @Override 4538 public boolean onTouchEvent(MotionEvent ev) { 4539 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4540 return false; 4541 } 4542 4543 if (DebugFlags.WEB_VIEW) { 4544 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4545 + mTouchMode); 4546 } 4547 4548 int action; 4549 float x, y; 4550 long eventTime = ev.getEventTime(); 4551 4552 // FIXME: we may consider to give WebKit an option to handle multi-touch 4553 // events later. 4554 if (mSupportMultiTouch && ev.getPointerCount() > 1) { 4555 if (mMinZoomScale < mMaxZoomScale) { 4556 mScaleDetector.onTouchEvent(ev); 4557 if (mScaleDetector.isInProgress()) { 4558 mLastTouchTime = eventTime; 4559 return true; 4560 } 4561 x = mScaleDetector.getFocusX(); 4562 y = mScaleDetector.getFocusY(); 4563 action = ev.getAction() & MotionEvent.ACTION_MASK; 4564 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4565 cancelTouch(); 4566 action = MotionEvent.ACTION_DOWN; 4567 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4568 // set mLastTouchX/Y to the remaining point 4569 mLastTouchX = x; 4570 mLastTouchY = y; 4571 } else if (action == MotionEvent.ACTION_MOVE) { 4572 // negative x or y indicate it is on the edge, skip it. 4573 if (x < 0 || y < 0) { 4574 return true; 4575 } 4576 } 4577 } else { 4578 // if the page disallow zoom, skip multi-pointer action 4579 return true; 4580 } 4581 } else { 4582 action = ev.getAction(); 4583 x = ev.getX(); 4584 y = ev.getY(); 4585 } 4586 4587 // Due to the touch screen edge effect, a touch closer to the edge 4588 // always snapped to the edge. As getViewWidth() can be different from 4589 // getWidth() due to the scrollbar, adjusting the point to match 4590 // getViewWidth(). Same applied to the height. 4591 if (x > getViewWidth() - 1) { 4592 x = getViewWidth() - 1; 4593 } 4594 if (y > getViewHeightWithTitle() - 1) { 4595 y = getViewHeightWithTitle() - 1; 4596 } 4597 4598 float fDeltaX = mLastTouchX - x; 4599 float fDeltaY = mLastTouchY - y; 4600 int deltaX = (int) fDeltaX; 4601 int deltaY = (int) fDeltaY; 4602 int contentX = viewToContentX((int) x + mScrollX); 4603 int contentY = viewToContentY((int) y + mScrollY); 4604 4605 switch (action) { 4606 case MotionEvent.ACTION_DOWN: { 4607 mPreventDefault = PREVENT_DEFAULT_NO; 4608 mConfirmMove = false; 4609 if (!mScroller.isFinished()) { 4610 // stop the current scroll animation, but if this is 4611 // the start of a fling, allow it to add to the current 4612 // fling's velocity 4613 mScroller.abortAnimation(); 4614 mTouchMode = TOUCH_DRAG_START_MODE; 4615 mConfirmMove = true; 4616 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4617 } else if (!inFullScreenMode() && mShiftIsPressed) { 4618 mSelectX = mScrollX + (int) x; 4619 mSelectY = mScrollY + (int) y; 4620 mTouchMode = TOUCH_SELECT_MODE; 4621 if (DebugFlags.WEB_VIEW) { 4622 Log.v(LOGTAG, "select=" + mSelectX + "," + mSelectY); 4623 } 4624 nativeMoveSelection(contentX, contentY, false); 4625 mTouchSelection = mExtendSelection = true; 4626 invalidate(); // draw the i-beam instead of the arrow 4627 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4628 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4629 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4630 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4631 } else { 4632 // commit the short press action for the previous tap 4633 doShortPress(); 4634 mTouchMode = TOUCH_INIT_MODE; 4635 mDeferTouchProcess = (!inFullScreenMode() 4636 && mForwardTouchEvents) ? hitFocusedPlugin( 4637 contentX, contentY) : false; 4638 } 4639 } else { // the normal case 4640 mPreviewZoomOnly = false; 4641 mTouchMode = TOUCH_INIT_MODE; 4642 mDeferTouchProcess = (!inFullScreenMode() 4643 && mForwardTouchEvents) ? hitFocusedPlugin( 4644 contentX, contentY) : false; 4645 mWebViewCore.sendMessage( 4646 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4647 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4648 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4649 (eventTime - mLastTouchUpTime), eventTime); 4650 } 4651 } 4652 // Trigger the link 4653 if (mTouchMode == TOUCH_INIT_MODE 4654 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4655 mPrivateHandler.sendEmptyMessageDelayed( 4656 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 4657 mPrivateHandler.sendEmptyMessageDelayed( 4658 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 4659 if (inFullScreenMode() || mDeferTouchProcess) { 4660 mPreventDefault = PREVENT_DEFAULT_YES; 4661 } else if (mForwardTouchEvents) { 4662 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 4663 } else { 4664 mPreventDefault = PREVENT_DEFAULT_NO; 4665 } 4666 // pass the touch events from UI thread to WebCore thread 4667 if (shouldForwardTouchEvent()) { 4668 TouchEventData ted = new TouchEventData(); 4669 ted.mAction = action; 4670 ted.mX = contentX; 4671 ted.mY = contentY; 4672 ted.mMetaState = ev.getMetaState(); 4673 ted.mReprocess = mDeferTouchProcess; 4674 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4675 if (mDeferTouchProcess) { 4676 // still needs to set them for compute deltaX/Y 4677 mLastTouchX = x; 4678 mLastTouchY = y; 4679 break; 4680 } 4681 if (!inFullScreenMode()) { 4682 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4683 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4684 action, 0), TAP_TIMEOUT); 4685 } 4686 } 4687 } 4688 startTouch(x, y, eventTime); 4689 break; 4690 } 4691 case MotionEvent.ACTION_MOVE: { 4692 boolean firstMove = false; 4693 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 4694 >= mTouchSlopSquare) { 4695 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4696 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4697 mConfirmMove = true; 4698 firstMove = true; 4699 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4700 mTouchMode = TOUCH_INIT_MODE; 4701 } 4702 } 4703 // pass the touch events from UI thread to WebCore thread 4704 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 4705 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 4706 TouchEventData ted = new TouchEventData(); 4707 ted.mAction = action; 4708 ted.mX = contentX; 4709 ted.mY = contentY; 4710 ted.mMetaState = ev.getMetaState(); 4711 ted.mReprocess = mDeferTouchProcess; 4712 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4713 mLastSentTouchTime = eventTime; 4714 if (mDeferTouchProcess) { 4715 break; 4716 } 4717 if (firstMove && !inFullScreenMode()) { 4718 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4719 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4720 action, 0), TAP_TIMEOUT); 4721 } 4722 } 4723 if (mTouchMode == TOUCH_DONE_MODE 4724 || mPreventDefault == PREVENT_DEFAULT_YES) { 4725 // no dragging during scroll zoom animation, or when prevent 4726 // default is yes 4727 break; 4728 } 4729 if (mVelocityTracker == null) { 4730 Log.e(LOGTAG, "Got null mVelocityTracker when " 4731 + "mPreventDefault = " + mPreventDefault 4732 + " mDeferTouchProcess = " + mDeferTouchProcess 4733 + " mTouchMode = " + mTouchMode); 4734 } 4735 mVelocityTracker.addMovement(ev); 4736 if (mTouchMode != TOUCH_DRAG_MODE) { 4737 if (mTouchMode == TOUCH_SELECT_MODE) { 4738 mSelectX = mScrollX + (int) x; 4739 mSelectY = mScrollY + (int) y; 4740 if (DebugFlags.WEB_VIEW) { 4741 Log.v(LOGTAG, "xtend=" + mSelectX + "," + mSelectY); 4742 } 4743 nativeMoveSelection(contentX, contentY, true); 4744 invalidate(); 4745 break; 4746 } 4747 if (!mConfirmMove) { 4748 break; 4749 } 4750 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 4751 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 4752 // track mLastTouchTime as we may need to do fling at 4753 // ACTION_UP 4754 mLastTouchTime = eventTime; 4755 break; 4756 } 4757 // if it starts nearly horizontal or vertical, enforce it 4758 int ax = Math.abs(deltaX); 4759 int ay = Math.abs(deltaY); 4760 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4761 mSnapScrollMode = SNAP_X; 4762 mSnapPositive = deltaX > 0; 4763 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4764 mSnapScrollMode = SNAP_Y; 4765 mSnapPositive = deltaY > 0; 4766 } 4767 4768 mTouchMode = TOUCH_DRAG_MODE; 4769 mLastTouchX = x; 4770 mLastTouchY = y; 4771 fDeltaX = 0.0f; 4772 fDeltaY = 0.0f; 4773 deltaX = 0; 4774 deltaY = 0; 4775 4776 startDrag(); 4777 } 4778 4779 if (mDragTrackerHandler != null) { 4780 mDragTrackerHandler.dragTo(x, y); 4781 } 4782 4783 // do pan 4784 boolean done = false; 4785 boolean keepScrollBarsVisible = false; 4786 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4787 keepScrollBarsVisible = done = true; 4788 } else { 4789 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4790 int ax = Math.abs(deltaX); 4791 int ay = Math.abs(deltaY); 4792 if (mSnapScrollMode == SNAP_X) { 4793 // radical change means getting out of snap mode 4794 if (ay > MAX_SLOPE_FOR_DIAG * ax 4795 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4796 mSnapScrollMode = SNAP_NONE; 4797 } 4798 // reverse direction means lock in the snap mode 4799 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4800 (mSnapPositive 4801 ? deltaX < -mMinLockSnapReverseDistance 4802 : deltaX > mMinLockSnapReverseDistance)) { 4803 mSnapScrollMode |= SNAP_LOCK; 4804 } 4805 } else { 4806 // radical change means getting out of snap mode 4807 if (ax > MAX_SLOPE_FOR_DIAG * ay 4808 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4809 mSnapScrollMode = SNAP_NONE; 4810 } 4811 // reverse direction means lock in the snap mode 4812 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4813 (mSnapPositive 4814 ? deltaY < -mMinLockSnapReverseDistance 4815 : deltaY > mMinLockSnapReverseDistance)) { 4816 mSnapScrollMode |= SNAP_LOCK; 4817 } 4818 } 4819 } 4820 if (mSnapScrollMode != SNAP_NONE) { 4821 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 4822 deltaY = 0; 4823 } else { 4824 deltaX = 0; 4825 } 4826 } 4827 if ((deltaX | deltaY) != 0) { 4828 if (deltaX != 0) { 4829 mLastTouchX = x; 4830 } 4831 if (deltaY != 0) { 4832 mLastTouchY = y; 4833 } 4834 mHeldMotionless = MOTIONLESS_FALSE; 4835 } else { 4836 // keep the scrollbar on the screen even there is no 4837 // scroll 4838 keepScrollBarsVisible = true; 4839 } 4840 mLastTouchTime = eventTime; 4841 mUserScroll = true; 4842 } 4843 4844 doDrag(deltaX, deltaY); 4845 4846 if (keepScrollBarsVisible) { 4847 if (mHeldMotionless != MOTIONLESS_TRUE) { 4848 mHeldMotionless = MOTIONLESS_TRUE; 4849 invalidate(); 4850 } 4851 // keep the scrollbar on the screen even there is no scroll 4852 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 4853 false); 4854 // return false to indicate that we can't pan out of the 4855 // view space 4856 return !done; 4857 } 4858 break; 4859 } 4860 case MotionEvent.ACTION_UP: { 4861 // pass the touch events from UI thread to WebCore thread 4862 if (shouldForwardTouchEvent()) { 4863 TouchEventData ted = new TouchEventData(); 4864 ted.mAction = action; 4865 ted.mX = contentX; 4866 ted.mY = contentY; 4867 ted.mMetaState = ev.getMetaState(); 4868 ted.mReprocess = mDeferTouchProcess; 4869 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4870 } 4871 mLastTouchUpTime = eventTime; 4872 switch (mTouchMode) { 4873 case TOUCH_DOUBLE_TAP_MODE: // double tap 4874 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4875 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4876 if (inFullScreenMode() || mDeferTouchProcess) { 4877 TouchEventData ted = new TouchEventData(); 4878 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 4879 ted.mX = contentX; 4880 ted.mY = contentY; 4881 ted.mMetaState = ev.getMetaState(); 4882 ted.mReprocess = mDeferTouchProcess; 4883 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4884 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 4885 doDoubleTap(); 4886 mTouchMode = TOUCH_DONE_MODE; 4887 } 4888 break; 4889 case TOUCH_SELECT_MODE: 4890 commitCopy(); 4891 mTouchSelection = false; 4892 break; 4893 case TOUCH_INIT_MODE: // tap 4894 case TOUCH_SHORTPRESS_START_MODE: 4895 case TOUCH_SHORTPRESS_MODE: 4896 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4897 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4898 if (mConfirmMove) { 4899 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 4900 " WebCore's response for touch down."); 4901 if (mPreventDefault != PREVENT_DEFAULT_YES 4902 && (computeMaxScrollX() > 0 4903 || computeMaxScrollY() > 0)) { 4904 // UI takes control back, cancel WebCore touch 4905 cancelWebCoreTouchEvent(contentX, contentY, 4906 true); 4907 // we will not rewrite drag code here, but we 4908 // will try fling if it applies. 4909 WebViewCore.reducePriority(); 4910 // fall through to TOUCH_DRAG_MODE 4911 } else { 4912 break; 4913 } 4914 } else { 4915 if (mTouchMode == TOUCH_INIT_MODE) { 4916 mPrivateHandler.sendEmptyMessageDelayed( 4917 RELEASE_SINGLE_TAP, ViewConfiguration 4918 .getDoubleTapTimeout()); 4919 } else { 4920 doShortPress(); 4921 } 4922 break; 4923 } 4924 case TOUCH_DRAG_MODE: 4925 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4926 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4927 mHeldMotionless = MOTIONLESS_TRUE; 4928 // redraw in high-quality, as we're done dragging 4929 invalidate(); 4930 // if the user waits a while w/o moving before the 4931 // up, we don't want to do a fling 4932 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 4933 if (mVelocityTracker == null) { 4934 Log.e(LOGTAG, "Got null mVelocityTracker when " 4935 + "mPreventDefault = " 4936 + mPreventDefault 4937 + " mDeferTouchProcess = " 4938 + mDeferTouchProcess); 4939 } 4940 mVelocityTracker.addMovement(ev); 4941 doFling(); 4942 break; 4943 } else { 4944 if (mScroller.springback(mScrollX, mScrollY, 0, 4945 computeMaxScrollX(), 0, 4946 computeMaxScrollY())) { 4947 invalidate(); 4948 } 4949 } 4950 mLastVelocity = 0; 4951 WebViewCore.resumePriority(); 4952 break; 4953 } 4954 stopTouch(); 4955 break; 4956 } 4957 case MotionEvent.ACTION_CANCEL: { 4958 if (mTouchMode == TOUCH_DRAG_MODE) { 4959 mScroller.springback(mScrollX, mScrollY, 0, 4960 computeMaxScrollX(), 0, computeMaxScrollY()); 4961 invalidate(); 4962 } 4963 cancelWebCoreTouchEvent(contentX, contentY, false); 4964 cancelTouch(); 4965 break; 4966 } 4967 } 4968 return true; 4969 } 4970 4971 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 4972 if (shouldForwardTouchEvent()) { 4973 if (removeEvents) { 4974 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 4975 } 4976 TouchEventData ted = new TouchEventData(); 4977 ted.mX = x; 4978 ted.mY = y; 4979 ted.mAction = MotionEvent.ACTION_CANCEL; 4980 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4981 mPreventDefault = PREVENT_DEFAULT_IGNORE; 4982 } 4983 } 4984 4985 private void startTouch(float x, float y, long eventTime) { 4986 // Remember where the motion event started 4987 mLastTouchX = x; 4988 mLastTouchY = y; 4989 mLastTouchTime = eventTime; 4990 mVelocityTracker = VelocityTracker.obtain(); 4991 mSnapScrollMode = SNAP_NONE; 4992 if (mDragTracker != null) { 4993 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 4994 } 4995 } 4996 4997 private void startDrag() { 4998 WebViewCore.reducePriority(); 4999 if (!mDragFromTextInput) { 5000 nativeHideCursor(); 5001 } 5002 WebSettings settings = getSettings(); 5003 if (settings.supportZoom() 5004 && settings.getBuiltInZoomControls() 5005 && !mZoomButtonsController.isVisible() 5006 && mMinZoomScale < mMaxZoomScale) { 5007 mZoomButtonsController.setVisible(true); 5008 int count = settings.getDoubleTapToastCount(); 5009 if (mInZoomOverview && count > 0) { 5010 settings.setDoubleTapToastCount(--count); 5011 Toast.makeText(mContext, 5012 com.android.internal.R.string.double_tap_toast, 5013 Toast.LENGTH_LONG).show(); 5014 } 5015 } 5016 } 5017 5018 private void doDrag(int deltaX, int deltaY) { 5019 if ((deltaX | deltaY) != 0) { 5020 overscrollBy(deltaX, deltaY, mScrollX, mScrollY, 5021 computeMaxScrollX(), computeMaxScrollY(), 5022 getViewWidth() / 3, getViewHeight() / 3, true); 5023 } 5024 if (!getSettings().getBuiltInZoomControls()) { 5025 boolean showPlusMinus = mMinZoomScale < mMaxZoomScale; 5026 if (mZoomControls != null && showPlusMinus) { 5027 if (mZoomControls.getVisibility() == View.VISIBLE) { 5028 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5029 } else { 5030 mZoomControls.show(showPlusMinus, false); 5031 } 5032 mPrivateHandler.postDelayed(mZoomControlRunnable, 5033 ZOOM_CONTROLS_TIMEOUT); 5034 } 5035 } 5036 } 5037 5038 private void stopTouch() { 5039 if (mDragTrackerHandler != null) { 5040 mDragTrackerHandler.stopDrag(); 5041 } 5042 // we also use mVelocityTracker == null to tell us that we are 5043 // not "moving around", so we can take the slower/prettier 5044 // mode in the drawing code 5045 if (mVelocityTracker != null) { 5046 mVelocityTracker.recycle(); 5047 mVelocityTracker = null; 5048 } 5049 } 5050 5051 private void cancelTouch() { 5052 if (mDragTrackerHandler != null) { 5053 mDragTrackerHandler.stopDrag(); 5054 } 5055 // we also use mVelocityTracker == null to tell us that we are 5056 // not "moving around", so we can take the slower/prettier 5057 // mode in the drawing code 5058 if (mVelocityTracker != null) { 5059 mVelocityTracker.recycle(); 5060 mVelocityTracker = null; 5061 } 5062 if (mTouchMode == TOUCH_DRAG_MODE) { 5063 WebViewCore.resumePriority(); 5064 } 5065 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5066 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5067 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5068 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5069 mHeldMotionless = MOTIONLESS_TRUE; 5070 mTouchMode = TOUCH_DONE_MODE; 5071 nativeHideCursor(); 5072 } 5073 5074 private long mTrackballFirstTime = 0; 5075 private long mTrackballLastTime = 0; 5076 private float mTrackballRemainsX = 0.0f; 5077 private float mTrackballRemainsY = 0.0f; 5078 private int mTrackballXMove = 0; 5079 private int mTrackballYMove = 0; 5080 private boolean mExtendSelection = false; 5081 private boolean mTouchSelection = false; 5082 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5083 private static final int TRACKBALL_TIMEOUT = 200; 5084 private static final int TRACKBALL_WAIT = 100; 5085 private static final int TRACKBALL_SCALE = 400; 5086 private static final int TRACKBALL_SCROLL_COUNT = 5; 5087 private static final int TRACKBALL_MOVE_COUNT = 10; 5088 private static final int TRACKBALL_MULTIPLIER = 3; 5089 private static final int SELECT_CURSOR_OFFSET = 16; 5090 private int mSelectX = 0; 5091 private int mSelectY = 0; 5092 private boolean mFocusSizeChanged = false; 5093 private boolean mShiftIsPressed = false; 5094 private boolean mTrackballDown = false; 5095 private long mTrackballUpTime = 0; 5096 private long mLastCursorTime = 0; 5097 private Rect mLastCursorBounds; 5098 5099 // Set by default; BrowserActivity clears to interpret trackball data 5100 // directly for movement. Currently, the framework only passes 5101 // arrow key events, not trackball events, from one child to the next 5102 private boolean mMapTrackballToArrowKeys = true; 5103 5104 public void setMapTrackballToArrowKeys(boolean setMap) { 5105 mMapTrackballToArrowKeys = setMap; 5106 } 5107 5108 void resetTrackballTime() { 5109 mTrackballLastTime = 0; 5110 } 5111 5112 @Override 5113 public boolean onTrackballEvent(MotionEvent ev) { 5114 long time = ev.getEventTime(); 5115 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5116 if (ev.getY() > 0) pageDown(true); 5117 if (ev.getY() < 0) pageUp(true); 5118 return true; 5119 } 5120 boolean shiftPressed = mShiftIsPressed && (mNativeClass == 0 5121 || !nativeFocusIsPlugin()); 5122 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5123 if (shiftPressed) { 5124 return true; // discard press if copy in progress 5125 } 5126 mTrackballDown = true; 5127 if (mNativeClass == 0) { 5128 return false; 5129 } 5130 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5131 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5132 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5133 nativeSelectBestAt(mLastCursorBounds); 5134 } 5135 if (DebugFlags.WEB_VIEW) { 5136 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5137 + " time=" + time 5138 + " mLastCursorTime=" + mLastCursorTime); 5139 } 5140 if (isInTouchMode()) requestFocusFromTouch(); 5141 return false; // let common code in onKeyDown at it 5142 } 5143 if (ev.getAction() == MotionEvent.ACTION_UP) { 5144 // LONG_PRESS_CENTER is set in common onKeyDown 5145 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5146 mTrackballDown = false; 5147 mTrackballUpTime = time; 5148 if (shiftPressed) { 5149 if (mExtendSelection) { 5150 commitCopy(); 5151 } else { 5152 mExtendSelection = true; 5153 invalidate(); // draw the i-beam instead of the arrow 5154 } 5155 return true; // discard press if copy in progress 5156 } 5157 if (DebugFlags.WEB_VIEW) { 5158 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5159 + " time=" + time 5160 ); 5161 } 5162 return false; // let common code in onKeyUp at it 5163 } 5164 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5165 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5166 return false; 5167 } 5168 if (mTrackballDown) { 5169 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5170 return true; // discard move if trackball is down 5171 } 5172 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5173 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5174 return true; 5175 } 5176 // TODO: alternatively we can do panning as touch does 5177 switchOutDrawHistory(); 5178 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5179 if (DebugFlags.WEB_VIEW) { 5180 Log.v(LOGTAG, "onTrackballEvent time=" 5181 + time + " last=" + mTrackballLastTime); 5182 } 5183 mTrackballFirstTime = time; 5184 mTrackballXMove = mTrackballYMove = 0; 5185 } 5186 mTrackballLastTime = time; 5187 if (DebugFlags.WEB_VIEW) { 5188 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5189 } 5190 mTrackballRemainsX += ev.getX(); 5191 mTrackballRemainsY += ev.getY(); 5192 doTrackball(time); 5193 return true; 5194 } 5195 5196 void moveSelection(float xRate, float yRate) { 5197 if (mNativeClass == 0) 5198 return; 5199 int width = getViewWidth(); 5200 int height = getViewHeight(); 5201 mSelectX += xRate; 5202 mSelectY += yRate; 5203 int maxX = width + mScrollX; 5204 int maxY = height + mScrollY; 5205 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5206 , mSelectX)); 5207 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5208 , mSelectY)); 5209 if (DebugFlags.WEB_VIEW) { 5210 Log.v(LOGTAG, "moveSelection" 5211 + " mSelectX=" + mSelectX 5212 + " mSelectY=" + mSelectY 5213 + " mScrollX=" + mScrollX 5214 + " mScrollY=" + mScrollY 5215 + " xRate=" + xRate 5216 + " yRate=" + yRate 5217 ); 5218 } 5219 nativeMoveSelection(viewToContentX(mSelectX), 5220 viewToContentY(mSelectY), mExtendSelection); 5221 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5222 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5223 : 0; 5224 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5225 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5226 : 0; 5227 pinScrollBy(scrollX, scrollY, true, 0); 5228 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5229 requestRectangleOnScreen(select); 5230 invalidate(); 5231 } 5232 5233 private int scaleTrackballX(float xRate, int width) { 5234 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5235 int nextXMove = xMove; 5236 if (xMove > 0) { 5237 if (xMove > mTrackballXMove) { 5238 xMove -= mTrackballXMove; 5239 } 5240 } else if (xMove < mTrackballXMove) { 5241 xMove -= mTrackballXMove; 5242 } 5243 mTrackballXMove = nextXMove; 5244 return xMove; 5245 } 5246 5247 private int scaleTrackballY(float yRate, int height) { 5248 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5249 int nextYMove = yMove; 5250 if (yMove > 0) { 5251 if (yMove > mTrackballYMove) { 5252 yMove -= mTrackballYMove; 5253 } 5254 } else if (yMove < mTrackballYMove) { 5255 yMove -= mTrackballYMove; 5256 } 5257 mTrackballYMove = nextYMove; 5258 return yMove; 5259 } 5260 5261 private int keyCodeToSoundsEffect(int keyCode) { 5262 switch(keyCode) { 5263 case KeyEvent.KEYCODE_DPAD_UP: 5264 return SoundEffectConstants.NAVIGATION_UP; 5265 case KeyEvent.KEYCODE_DPAD_RIGHT: 5266 return SoundEffectConstants.NAVIGATION_RIGHT; 5267 case KeyEvent.KEYCODE_DPAD_DOWN: 5268 return SoundEffectConstants.NAVIGATION_DOWN; 5269 case KeyEvent.KEYCODE_DPAD_LEFT: 5270 return SoundEffectConstants.NAVIGATION_LEFT; 5271 } 5272 throw new IllegalArgumentException("keyCode must be one of " + 5273 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5274 "KEYCODE_DPAD_LEFT}."); 5275 } 5276 5277 private void doTrackball(long time) { 5278 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5279 if (elapsed == 0) { 5280 elapsed = TRACKBALL_TIMEOUT; 5281 } 5282 float xRate = mTrackballRemainsX * 1000 / elapsed; 5283 float yRate = mTrackballRemainsY * 1000 / elapsed; 5284 int viewWidth = getViewWidth(); 5285 int viewHeight = getViewHeight(); 5286 if (mShiftIsPressed && (mNativeClass == 0 || !nativeFocusIsPlugin())) { 5287 moveSelection(scaleTrackballX(xRate, viewWidth), 5288 scaleTrackballY(yRate, viewHeight)); 5289 mTrackballRemainsX = mTrackballRemainsY = 0; 5290 return; 5291 } 5292 float ax = Math.abs(xRate); 5293 float ay = Math.abs(yRate); 5294 float maxA = Math.max(ax, ay); 5295 if (DebugFlags.WEB_VIEW) { 5296 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5297 + " xRate=" + xRate 5298 + " yRate=" + yRate 5299 + " mTrackballRemainsX=" + mTrackballRemainsX 5300 + " mTrackballRemainsY=" + mTrackballRemainsY); 5301 } 5302 int width = mContentWidth - viewWidth; 5303 int height = mContentHeight - viewHeight; 5304 if (width < 0) width = 0; 5305 if (height < 0) height = 0; 5306 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5307 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5308 maxA = Math.max(ax, ay); 5309 int count = Math.max(0, (int) maxA); 5310 int oldScrollX = mScrollX; 5311 int oldScrollY = mScrollY; 5312 if (count > 0) { 5313 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5314 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5315 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5316 KeyEvent.KEYCODE_DPAD_RIGHT; 5317 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5318 if (DebugFlags.WEB_VIEW) { 5319 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5320 + " count=" + count 5321 + " mTrackballRemainsX=" + mTrackballRemainsX 5322 + " mTrackballRemainsY=" + mTrackballRemainsY); 5323 } 5324 if (mNativeClass != 0 && nativeFocusIsPlugin()) { 5325 for (int i = 0; i < count; i++) { 5326 letPluginHandleNavKey(selectKeyCode, time, true); 5327 } 5328 letPluginHandleNavKey(selectKeyCode, time, false); 5329 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5330 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5331 } 5332 mTrackballRemainsX = mTrackballRemainsY = 0; 5333 } 5334 if (count >= TRACKBALL_SCROLL_COUNT) { 5335 int xMove = scaleTrackballX(xRate, width); 5336 int yMove = scaleTrackballY(yRate, height); 5337 if (DebugFlags.WEB_VIEW) { 5338 Log.v(LOGTAG, "doTrackball pinScrollBy" 5339 + " count=" + count 5340 + " xMove=" + xMove + " yMove=" + yMove 5341 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5342 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5343 ); 5344 } 5345 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5346 xMove = 0; 5347 } 5348 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5349 yMove = 0; 5350 } 5351 if (xMove != 0 || yMove != 0) { 5352 pinScrollBy(xMove, yMove, true, 0); 5353 } 5354 mUserScroll = true; 5355 } 5356 } 5357 5358 private int computeMaxScrollX() { 5359 return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5360 } 5361 5362 private int computeMaxScrollY() { 5363 return Math.max(computeVerticalScrollRange() + getTitleHeight() 5364 - getViewHeightWithTitle(), 0); 5365 } 5366 5367 public void flingScroll(int vx, int vy) { 5368 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5369 computeMaxScrollY(), getViewWidth() / 3, getViewHeight() / 3); 5370 invalidate(); 5371 } 5372 5373 private void doFling() { 5374 if (mVelocityTracker == null) { 5375 return; 5376 } 5377 int maxX = computeMaxScrollX(); 5378 int maxY = computeMaxScrollY(); 5379 5380 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5381 int vx = (int) mVelocityTracker.getXVelocity(); 5382 int vy = (int) mVelocityTracker.getYVelocity(); 5383 5384 if (mSnapScrollMode != SNAP_NONE) { 5385 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5386 vy = 0; 5387 } else { 5388 vx = 0; 5389 } 5390 } 5391 if (maxX == 0 && !canOverscrollHorizontally()) { 5392 vx = 0; 5393 } 5394 if (true /* EMG release: make our fling more like Maps' */) { 5395 // maps cuts their velocity in half 5396 vx = vx * 3 / 4; 5397 vy = vy * 3 / 4; 5398 } 5399 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5400 WebViewCore.resumePriority(); 5401 if (mScroller.springback(mScrollX, mScrollY, 0, computeMaxScrollX(), 5402 0, computeMaxScrollY())) { 5403 invalidate(); 5404 } 5405 return; 5406 } 5407 float currentVelocity = mScroller.getCurrVelocity(); 5408 if (mLastVelocity > 0 && currentVelocity > 0) { 5409 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5410 - Math.atan2(vy, vx))); 5411 final float circle = (float) (Math.PI) * 2.0f; 5412 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5413 vx += currentVelocity * mLastVelX / mLastVelocity; 5414 vy += currentVelocity * mLastVelY / mLastVelocity; 5415 if (DebugFlags.WEB_VIEW) { 5416 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5417 } 5418 } else if (DebugFlags.WEB_VIEW) { 5419 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5420 } 5421 } else if (DebugFlags.WEB_VIEW) { 5422 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5423 + " current=" + currentVelocity 5424 + " vx=" + vx + " vy=" + vy 5425 + " maxX=" + maxX + " maxY=" + maxY 5426 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5427 } 5428 mLastVelX = vx; 5429 mLastVelY = vy; 5430 mLastVelocity = (float) Math.hypot(vx, vy); 5431 5432 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY, 5433 getViewWidth() / 3, getViewHeight() / 3); 5434 // TODO: duration is calculated based on velocity, if the range is 5435 // small, the animation will stop before duration is up. We may 5436 // want to calculate how long the animation is going to run to precisely 5437 // resume the webcore update. 5438 final int time = mScroller.getDuration(); 5439 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5440 awakenScrollBars(time); 5441 invalidate(); 5442 } 5443 5444 private boolean zoomWithPreview(float scale, boolean updateTextWrapScale) { 5445 float oldScale = mActualScale; 5446 mInitialScrollX = mScrollX; 5447 mInitialScrollY = mScrollY; 5448 5449 // snap to DEFAULT_SCALE if it is close 5450 if (Math.abs(scale - mDefaultScale) < MINIMUM_SCALE_INCREMENT) { 5451 scale = mDefaultScale; 5452 } 5453 5454 setNewZoomScale(scale, updateTextWrapScale, false); 5455 5456 if (oldScale != mActualScale) { 5457 // use mZoomPickerScale to see zoom preview first 5458 mZoomStart = SystemClock.uptimeMillis(); 5459 mInvInitialZoomScale = 1.0f / oldScale; 5460 mInvFinalZoomScale = 1.0f / mActualScale; 5461 mZoomScale = mActualScale; 5462 WebViewCore.pauseUpdatePicture(mWebViewCore); 5463 invalidate(); 5464 return true; 5465 } else { 5466 return false; 5467 } 5468 } 5469 5470 /** 5471 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5472 * in charge of installing this view to the view hierarchy. This view will 5473 * become visible when the user starts scrolling via touch and fade away if 5474 * the user does not interact with it. 5475 * <p/> 5476 * API version 3 introduces a built-in zoom mechanism that is shown 5477 * automatically by the MapView. This is the preferred approach for 5478 * showing the zoom UI. 5479 * 5480 * @deprecated The built-in zoom mechanism is preferred, see 5481 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5482 */ 5483 @Deprecated 5484 public View getZoomControls() { 5485 if (!getSettings().supportZoom()) { 5486 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5487 return null; 5488 } 5489 if (mZoomControls == null) { 5490 mZoomControls = createZoomControls(); 5491 5492 /* 5493 * need to be set to VISIBLE first so that getMeasuredHeight() in 5494 * {@link #onSizeChanged()} can return the measured value for proper 5495 * layout. 5496 */ 5497 mZoomControls.setVisibility(View.VISIBLE); 5498 mZoomControlRunnable = new Runnable() { 5499 public void run() { 5500 5501 /* Don't dismiss the controls if the user has 5502 * focus on them. Wait and check again later. 5503 */ 5504 if (!mZoomControls.hasFocus()) { 5505 mZoomControls.hide(); 5506 } else { 5507 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5508 mPrivateHandler.postDelayed(mZoomControlRunnable, 5509 ZOOM_CONTROLS_TIMEOUT); 5510 } 5511 } 5512 }; 5513 } 5514 return mZoomControls; 5515 } 5516 5517 private ExtendedZoomControls createZoomControls() { 5518 ExtendedZoomControls zoomControls = new ExtendedZoomControls(mContext 5519 , null); 5520 zoomControls.setOnZoomInClickListener(new OnClickListener() { 5521 public void onClick(View v) { 5522 // reset time out 5523 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5524 mPrivateHandler.postDelayed(mZoomControlRunnable, 5525 ZOOM_CONTROLS_TIMEOUT); 5526 zoomIn(); 5527 } 5528 }); 5529 zoomControls.setOnZoomOutClickListener(new OnClickListener() { 5530 public void onClick(View v) { 5531 // reset time out 5532 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5533 mPrivateHandler.postDelayed(mZoomControlRunnable, 5534 ZOOM_CONTROLS_TIMEOUT); 5535 zoomOut(); 5536 } 5537 }); 5538 return zoomControls; 5539 } 5540 5541 /** 5542 * Gets the {@link ZoomButtonsController} which can be used to add 5543 * additional buttons to the zoom controls window. 5544 * 5545 * @return The instance of {@link ZoomButtonsController} used by this class, 5546 * or null if it is unavailable. 5547 * @hide 5548 */ 5549 public ZoomButtonsController getZoomButtonsController() { 5550 return mZoomButtonsController; 5551 } 5552 5553 /** 5554 * Perform zoom in in the webview 5555 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5556 */ 5557 public boolean zoomIn() { 5558 // TODO: alternatively we can disallow this during draw history mode 5559 switchOutDrawHistory(); 5560 mInZoomOverview = false; 5561 // Center zooming to the center of the screen. 5562 mZoomCenterX = getViewWidth() * .5f; 5563 mZoomCenterY = getViewHeight() * .5f; 5564 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5565 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5566 return zoomWithPreview(mActualScale * 1.25f, true); 5567 } 5568 5569 /** 5570 * Perform zoom out in the webview 5571 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5572 */ 5573 public boolean zoomOut() { 5574 // TODO: alternatively we can disallow this during draw history mode 5575 switchOutDrawHistory(); 5576 // Center zooming to the center of the screen. 5577 mZoomCenterX = getViewWidth() * .5f; 5578 mZoomCenterY = getViewHeight() * .5f; 5579 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5580 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5581 return zoomWithPreview(mActualScale * 0.8f, true); 5582 } 5583 5584 private void updateSelection() { 5585 if (mNativeClass == 0) { 5586 return; 5587 } 5588 // mLastTouchX and mLastTouchY are the point in the current viewport 5589 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5590 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5591 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5592 contentX + mNavSlop, contentY + mNavSlop); 5593 nativeSelectBestAt(rect); 5594 } 5595 5596 /** 5597 * Scroll the focused text field/area to match the WebTextView 5598 * @param xPercent New x position of the WebTextView from 0 to 1. 5599 * @param y New y position of the WebTextView in view coordinates 5600 */ 5601 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5602 if (!inEditingMode() || mWebViewCore == null) { 5603 return; 5604 } 5605 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5606 // Since this position is relative to the top of the text input 5607 // field, we do not need to take the title bar's height into 5608 // consideration. 5609 viewToContentDimension(y), 5610 new Float(xPercent)); 5611 } 5612 5613 /** 5614 * Set our starting point and time for a drag from the WebTextView. 5615 */ 5616 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5617 if (!inEditingMode()) { 5618 return; 5619 } 5620 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5621 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5622 mLastTouchTime = eventTime; 5623 if (!mScroller.isFinished()) { 5624 abortAnimation(); 5625 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5626 } 5627 mSnapScrollMode = SNAP_NONE; 5628 mVelocityTracker = VelocityTracker.obtain(); 5629 mTouchMode = TOUCH_DRAG_START_MODE; 5630 } 5631 5632 /** 5633 * Given a motion event from the WebTextView, set its location to our 5634 * coordinates, and handle the event. 5635 */ 5636 /*package*/ boolean textFieldDrag(MotionEvent event) { 5637 if (!inEditingMode()) { 5638 return false; 5639 } 5640 mDragFromTextInput = true; 5641 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5642 (float) (mWebTextView.getTop() - mScrollY)); 5643 boolean result = onTouchEvent(event); 5644 mDragFromTextInput = false; 5645 return result; 5646 } 5647 5648 /** 5649 * Due a touch up from a WebTextView. This will be handled by webkit to 5650 * change the selection. 5651 * @param event MotionEvent in the WebTextView's coordinates. 5652 */ 5653 /*package*/ void touchUpOnTextField(MotionEvent event) { 5654 if (!inEditingMode()) { 5655 return; 5656 } 5657 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5658 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5659 nativeMotionUp(x, y, mNavSlop); 5660 } 5661 5662 /** 5663 * Called when pressing the center key or trackball on a textfield. 5664 */ 5665 /*package*/ void centerKeyPressOnTextField() { 5666 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5667 nativeCursorNodePointer()); 5668 } 5669 5670 private void doShortPress() { 5671 if (mNativeClass == 0) { 5672 return; 5673 } 5674 if (mPreventDefault == PREVENT_DEFAULT_YES) { 5675 return; 5676 } 5677 mTouchMode = TOUCH_DONE_MODE; 5678 switchOutDrawHistory(); 5679 // mLastTouchX and mLastTouchY are the point in the current viewport 5680 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5681 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5682 if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5683 WebViewCore.MotionUpData motionUpData = new WebViewCore 5684 .MotionUpData(); 5685 motionUpData.mFrame = nativeCacheHitFramePointer(); 5686 motionUpData.mNode = nativeCacheHitNodePointer(); 5687 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5688 motionUpData.mX = contentX; 5689 motionUpData.mY = contentY; 5690 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5691 motionUpData); 5692 } else { 5693 doMotionUp(contentX, contentY); 5694 } 5695 } 5696 5697 private void doMotionUp(int contentX, int contentY) { 5698 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5699 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5700 } 5701 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5702 playSoundEffect(SoundEffectConstants.CLICK); 5703 } 5704 } 5705 5706 /* 5707 * Return true if the view (Plugin) is fully visible and maximized inside 5708 * the WebView. 5709 */ 5710 private boolean isPluginFitOnScreen(ViewManager.ChildView view) { 5711 int viewWidth = getViewWidth(); 5712 int viewHeight = getViewHeightWithTitle(); 5713 float scale = Math.min((float) viewWidth / view.width, 5714 (float) viewHeight / view.height); 5715 if (scale < mMinZoomScale) { 5716 scale = mMinZoomScale; 5717 } else if (scale > mMaxZoomScale) { 5718 scale = mMaxZoomScale; 5719 } 5720 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 5721 if (contentToViewX(view.x) >= mScrollX 5722 && contentToViewX(view.x + view.width) <= mScrollX 5723 + viewWidth 5724 && contentToViewY(view.y) >= mScrollY 5725 && contentToViewY(view.y + view.height) <= mScrollY 5726 + viewHeight) { 5727 return true; 5728 } 5729 } 5730 return false; 5731 } 5732 5733 /* 5734 * Maximize and center the rectangle, specified in the document coordinate 5735 * space, inside the WebView. If the zoom doesn't need to be changed, do an 5736 * animated scroll to center it. If the zoom needs to be changed, find the 5737 * zoom center and do a smooth zoom transition. 5738 */ 5739 private void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 5740 int viewWidth = getViewWidth(); 5741 int viewHeight = getViewHeightWithTitle(); 5742 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 5743 / docHeight); 5744 if (scale < mMinZoomScale) { 5745 scale = mMinZoomScale; 5746 } else if (scale > mMaxZoomScale) { 5747 scale = mMaxZoomScale; 5748 } 5749 if (Math.abs(scale - mActualScale) < MINIMUM_SCALE_INCREMENT) { 5750 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 5751 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 5752 true, 0); 5753 } else { 5754 float oldScreenX = docX * mActualScale - mScrollX; 5755 float rectViewX = docX * scale; 5756 float rectViewWidth = docWidth * scale; 5757 float newMaxWidth = mContentWidth * scale; 5758 float newScreenX = (viewWidth - rectViewWidth) / 2; 5759 // pin the newX to the WebView 5760 if (newScreenX > rectViewX) { 5761 newScreenX = rectViewX; 5762 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 5763 newScreenX = viewWidth - (newMaxWidth - rectViewX); 5764 } 5765 mZoomCenterX = (oldScreenX * scale - newScreenX * mActualScale) 5766 / (scale - mActualScale); 5767 float oldScreenY = docY * mActualScale + getTitleHeight() 5768 - mScrollY; 5769 float rectViewY = docY * scale + getTitleHeight(); 5770 float rectViewHeight = docHeight * scale; 5771 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 5772 float newScreenY = (viewHeight - rectViewHeight) / 2; 5773 // pin the newY to the WebView 5774 if (newScreenY > rectViewY) { 5775 newScreenY = rectViewY; 5776 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 5777 newScreenY = viewHeight - (newMaxHeight - rectViewY); 5778 } 5779 mZoomCenterY = (oldScreenY * scale - newScreenY * mActualScale) 5780 / (scale - mActualScale); 5781 zoomWithPreview(scale, false); 5782 } 5783 } 5784 5785 // Rule for double tap: 5786 // 1. if the current scale is not same as the text wrap scale and layout 5787 // algorithm is NARROW_COLUMNS, fit to column; 5788 // 2. if the current state is not overview mode, change to overview mode; 5789 // 3. if the current state is overview mode, change to default scale. 5790 private void doDoubleTap() { 5791 if (mWebViewCore.getSettings().getUseWideViewPort() == false) { 5792 return; 5793 } 5794 mZoomCenterX = mLastTouchX; 5795 mZoomCenterY = mLastTouchY; 5796 mAnchorX = viewToContentX((int) mZoomCenterX + mScrollX); 5797 mAnchorY = viewToContentY((int) mZoomCenterY + mScrollY); 5798 WebSettings settings = getSettings(); 5799 // remove the zoom control after double tap 5800 if (settings.getBuiltInZoomControls()) { 5801 if (mZoomButtonsController.isVisible()) { 5802 mZoomButtonsController.setVisible(false); 5803 } 5804 } else { 5805 if (mZoomControlRunnable != null) { 5806 mPrivateHandler.removeCallbacks(mZoomControlRunnable); 5807 } 5808 if (mZoomControls != null) { 5809 mZoomControls.hide(); 5810 } 5811 } 5812 settings.setDoubleTapToastCount(0); 5813 ViewManager.ChildView plugin = mViewManager.hitTest(mAnchorX, mAnchorY); 5814 if (plugin != null) { 5815 if (isPluginFitOnScreen(plugin)) { 5816 mInZoomOverview = true; 5817 // Force the titlebar fully reveal in overview mode 5818 if (mScrollY < getTitleHeight()) mScrollY = 0; 5819 zoomWithPreview((float) getViewWidth() / mZoomOverviewWidth, 5820 true); 5821 } else { 5822 mInZoomOverview = false; 5823 centerFitRect(plugin.x, plugin.y, plugin.width, plugin.height); 5824 } 5825 return; 5826 } 5827 boolean zoomToDefault = false; 5828 if ((settings.getLayoutAlgorithm() == WebSettings.LayoutAlgorithm.NARROW_COLUMNS) 5829 && (Math.abs(mActualScale - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT)) { 5830 setNewZoomScale(mActualScale, true, true); 5831 float overviewScale = (float) getViewWidth() / mZoomOverviewWidth; 5832 if (Math.abs(mActualScale - overviewScale) < MINIMUM_SCALE_INCREMENT) { 5833 mInZoomOverview = true; 5834 } 5835 } else if (!mInZoomOverview) { 5836 float newScale = (float) getViewWidth() / mZoomOverviewWidth; 5837 if (Math.abs(mActualScale - newScale) >= MINIMUM_SCALE_INCREMENT) { 5838 mInZoomOverview = true; 5839 // Force the titlebar fully reveal in overview mode 5840 if (mScrollY < getTitleHeight()) mScrollY = 0; 5841 zoomWithPreview(newScale, true); 5842 } else if (Math.abs(mActualScale - mDefaultScale) >= MINIMUM_SCALE_INCREMENT) { 5843 zoomToDefault = true; 5844 } 5845 } else { 5846 zoomToDefault = true; 5847 } 5848 if (zoomToDefault) { 5849 mInZoomOverview = false; 5850 int left = nativeGetBlockLeftEdge(mAnchorX, mAnchorY, mActualScale); 5851 if (left != NO_LEFTEDGE) { 5852 // add a 5pt padding to the left edge. 5853 int viewLeft = contentToViewX(left < 5 ? 0 : (left - 5)) 5854 - mScrollX; 5855 // Re-calculate the zoom center so that the new scroll x will be 5856 // on the left edge. 5857 if (viewLeft > 0) { 5858 mZoomCenterX = viewLeft * mDefaultScale 5859 / (mDefaultScale - mActualScale); 5860 } else { 5861 scrollBy(viewLeft, 0); 5862 mZoomCenterX = 0; 5863 } 5864 } 5865 zoomWithPreview(mDefaultScale, true); 5866 } 5867 } 5868 5869 // Called by JNI to handle a touch on a node representing an email address, 5870 // address, or phone number 5871 private void overrideLoading(String url) { 5872 mCallbackProxy.uiOverrideUrlLoading(url); 5873 } 5874 5875 @Override 5876 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5877 boolean result = false; 5878 if (inEditingMode()) { 5879 result = mWebTextView.requestFocus(direction, 5880 previouslyFocusedRect); 5881 } else { 5882 result = super.requestFocus(direction, previouslyFocusedRect); 5883 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5884 // For cases such as GMail, where we gain focus from a direction, 5885 // we want to move to the first available link. 5886 // FIXME: If there are no visible links, we may not want to 5887 int fakeKeyDirection = 0; 5888 switch(direction) { 5889 case View.FOCUS_UP: 5890 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5891 break; 5892 case View.FOCUS_DOWN: 5893 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5894 break; 5895 case View.FOCUS_LEFT: 5896 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5897 break; 5898 case View.FOCUS_RIGHT: 5899 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5900 break; 5901 default: 5902 return result; 5903 } 5904 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5905 navHandledKey(fakeKeyDirection, 1, true, 0); 5906 } 5907 } 5908 } 5909 return result; 5910 } 5911 5912 @Override 5913 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5914 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5915 5916 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5917 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5918 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5919 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5920 5921 int measuredHeight = heightSize; 5922 int measuredWidth = widthSize; 5923 5924 // Grab the content size from WebViewCore. 5925 int contentHeight = contentToViewDimension(mContentHeight); 5926 int contentWidth = contentToViewDimension(mContentWidth); 5927 5928// Log.d(LOGTAG, "------- measure " + heightMode); 5929 5930 if (heightMode != MeasureSpec.EXACTLY) { 5931 mHeightCanMeasure = true; 5932 measuredHeight = contentHeight; 5933 if (heightMode == MeasureSpec.AT_MOST) { 5934 // If we are larger than the AT_MOST height, then our height can 5935 // no longer be measured and we should scroll internally. 5936 if (measuredHeight > heightSize) { 5937 measuredHeight = heightSize; 5938 mHeightCanMeasure = false; 5939 } 5940 } 5941 } else { 5942 mHeightCanMeasure = false; 5943 } 5944 if (mNativeClass != 0) { 5945 nativeSetHeightCanMeasure(mHeightCanMeasure); 5946 } 5947 // For the width, always use the given size unless unspecified. 5948 if (widthMode == MeasureSpec.UNSPECIFIED) { 5949 mWidthCanMeasure = true; 5950 measuredWidth = contentWidth; 5951 } else { 5952 mWidthCanMeasure = false; 5953 } 5954 5955 synchronized (this) { 5956 setMeasuredDimension(measuredWidth, measuredHeight); 5957 } 5958 } 5959 5960 @Override 5961 public boolean requestChildRectangleOnScreen(View child, 5962 Rect rect, 5963 boolean immediate) { 5964 rect.offset(child.getLeft() - child.getScrollX(), 5965 child.getTop() - child.getScrollY()); 5966 5967 Rect content = new Rect(viewToContentX(mScrollX), 5968 viewToContentY(mScrollY), 5969 viewToContentX(mScrollX + getWidth() 5970 - getVerticalScrollbarWidth()), 5971 viewToContentY(mScrollY + getViewHeightWithTitle())); 5972 content = nativeSubtractLayers(content); 5973 int screenTop = contentToViewY(content.top); 5974 int screenBottom = contentToViewY(content.bottom); 5975 int height = screenBottom - screenTop; 5976 int scrollYDelta = 0; 5977 5978 if (rect.bottom > screenBottom) { 5979 int oneThirdOfScreenHeight = height / 3; 5980 if (rect.height() > 2 * oneThirdOfScreenHeight) { 5981 // If the rectangle is too tall to fit in the bottom two thirds 5982 // of the screen, place it at the top. 5983 scrollYDelta = rect.top - screenTop; 5984 } else { 5985 // If the rectangle will still fit on screen, we want its 5986 // top to be in the top third of the screen. 5987 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 5988 } 5989 } else if (rect.top < screenTop) { 5990 scrollYDelta = rect.top - screenTop; 5991 } 5992 5993 int screenLeft = contentToViewX(content.left); 5994 int screenRight = contentToViewX(content.right); 5995 int width = screenRight - screenLeft; 5996 int scrollXDelta = 0; 5997 5998 if (rect.right > screenRight && rect.left > screenLeft) { 5999 if (rect.width() > width) { 6000 scrollXDelta += (rect.left - screenLeft); 6001 } else { 6002 scrollXDelta += (rect.right - screenRight); 6003 } 6004 } else if (rect.left < screenLeft) { 6005 scrollXDelta -= (screenLeft - rect.left); 6006 } 6007 6008 if ((scrollYDelta | scrollXDelta) != 0) { 6009 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6010 } 6011 6012 return false; 6013 } 6014 6015 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6016 String replace, int newStart, int newEnd) { 6017 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6018 arg.mReplace = replace; 6019 arg.mNewStart = newStart; 6020 arg.mNewEnd = newEnd; 6021 mTextGeneration++; 6022 arg.mTextGeneration = mTextGeneration; 6023 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6024 } 6025 6026 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6027 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6028 arg.mEvent = event; 6029 arg.mCurrentText = currentText; 6030 // Increase our text generation number, and pass it to webcore thread 6031 mTextGeneration++; 6032 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6033 // WebKit's document state is not saved until about to leave the page. 6034 // To make sure the host application, like Browser, has the up to date 6035 // document state when it goes to background, we force to save the 6036 // document state. 6037 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6038 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6039 cursorData(), 1000); 6040 } 6041 6042 /* package */ synchronized WebViewCore getWebViewCore() { 6043 return mWebViewCore; 6044 } 6045 6046 //------------------------------------------------------------------------- 6047 // Methods can be called from a separate thread, like WebViewCore 6048 // If it needs to call the View system, it has to send message. 6049 //------------------------------------------------------------------------- 6050 6051 /** 6052 * General handler to receive message coming from webkit thread 6053 */ 6054 class PrivateHandler extends Handler { 6055 @Override 6056 public void handleMessage(Message msg) { 6057 // exclude INVAL_RECT_MSG_ID since it is frequently output 6058 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6059 if (msg.what >= FIRST_PRIVATE_MSG_ID 6060 && msg.what <= LAST_PRIVATE_MSG_ID) { 6061 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6062 - FIRST_PRIVATE_MSG_ID]); 6063 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6064 && msg.what <= LAST_PACKAGE_MSG_ID) { 6065 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6066 - FIRST_PACKAGE_MSG_ID]); 6067 } else { 6068 Log.v(LOGTAG, Integer.toString(msg.what)); 6069 } 6070 } 6071 if (mWebViewCore == null) { 6072 // after WebView's destroy() is called, skip handling messages. 6073 return; 6074 } 6075 switch (msg.what) { 6076 case REMEMBER_PASSWORD: { 6077 mDatabase.setUsernamePassword( 6078 msg.getData().getString("host"), 6079 msg.getData().getString("username"), 6080 msg.getData().getString("password")); 6081 ((Message) msg.obj).sendToTarget(); 6082 break; 6083 } 6084 case NEVER_REMEMBER_PASSWORD: { 6085 mDatabase.setUsernamePassword( 6086 msg.getData().getString("host"), null, null); 6087 ((Message) msg.obj).sendToTarget(); 6088 break; 6089 } 6090 case PREVENT_DEFAULT_TIMEOUT: { 6091 // if timeout happens, cancel it so that it won't block UI 6092 // to continue handling touch events 6093 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6094 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6095 || (msg.arg1 == MotionEvent.ACTION_MOVE 6096 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6097 cancelWebCoreTouchEvent( 6098 viewToContentX((int) mLastTouchX + mScrollX), 6099 viewToContentY((int) mLastTouchY + mScrollY), 6100 true); 6101 } 6102 break; 6103 } 6104 case SWITCH_TO_SHORTPRESS: { 6105 if (mTouchMode == TOUCH_INIT_MODE) { 6106 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6107 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6108 updateSelection(); 6109 } else { 6110 // set to TOUCH_SHORTPRESS_MODE so that it won't 6111 // trigger double tap any more 6112 mTouchMode = TOUCH_SHORTPRESS_MODE; 6113 } 6114 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6115 mTouchMode = TOUCH_DONE_MODE; 6116 } 6117 break; 6118 } 6119 case SWITCH_TO_LONGPRESS: { 6120 if (inFullScreenMode() || mDeferTouchProcess) { 6121 TouchEventData ted = new TouchEventData(); 6122 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6123 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6124 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6125 // metaState for long press is tricky. Should it be the 6126 // state when the press started or when the press was 6127 // released? Or some intermediary key state? For 6128 // simplicity for now, we don't set it. 6129 ted.mMetaState = 0; 6130 ted.mReprocess = mDeferTouchProcess; 6131 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6132 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6133 mTouchMode = TOUCH_DONE_MODE; 6134 performLongClick(); 6135 rebuildWebTextView(); 6136 } 6137 break; 6138 } 6139 case RELEASE_SINGLE_TAP: { 6140 doShortPress(); 6141 break; 6142 } 6143 case SCROLL_BY_MSG_ID: 6144 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6145 break; 6146 case SYNC_SCROLL_TO_MSG_ID: 6147 if (mUserScroll) { 6148 // if user has scrolled explicitly, don't sync the 6149 // scroll position any more 6150 mUserScroll = false; 6151 break; 6152 } 6153 // fall through 6154 case SCROLL_TO_MSG_ID: 6155 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6156 // if we can't scroll to the exact position due to pin, 6157 // send a message to WebCore to re-scroll when we get a 6158 // new picture 6159 mUserScroll = false; 6160 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6161 msg.arg1, msg.arg2); 6162 } 6163 break; 6164 case SPAWN_SCROLL_TO_MSG_ID: 6165 spawnContentScrollTo(msg.arg1, msg.arg2); 6166 break; 6167 case UPDATE_ZOOM_RANGE: { 6168 WebViewCore.RestoreState restoreState 6169 = (WebViewCore.RestoreState) msg.obj; 6170 // mScrollX contains the new minPrefWidth 6171 updateZoomRange(restoreState, getViewWidth(), 6172 restoreState.mScrollX, false); 6173 break; 6174 } 6175 case NEW_PICTURE_MSG_ID: { 6176 WebSettings settings = mWebViewCore.getSettings(); 6177 // called for new content 6178 final int viewWidth = getViewWidth(); 6179 final WebViewCore.DrawData draw = 6180 (WebViewCore.DrawData) msg.obj; 6181 final Point viewSize = draw.mViewPoint; 6182 boolean useWideViewport = settings.getUseWideViewPort(); 6183 WebViewCore.RestoreState restoreState = draw.mRestoreState; 6184 boolean hasRestoreState = restoreState != null; 6185 if (hasRestoreState) { 6186 updateZoomRange(restoreState, viewSize.x, 6187 draw.mMinPrefWidth, true); 6188 if (!mDrawHistory) { 6189 mInZoomOverview = false; 6190 6191 if (mInitialScaleInPercent > 0) { 6192 setNewZoomScale(mInitialScaleInPercent / 100.0f, 6193 mInitialScaleInPercent != mTextWrapScale * 100, 6194 false); 6195 } else if (restoreState.mViewScale > 0) { 6196 mTextWrapScale = restoreState.mTextWrapScale; 6197 setNewZoomScale(restoreState.mViewScale, false, 6198 false); 6199 } else { 6200 mInZoomOverview = useWideViewport 6201 && settings.getLoadWithOverviewMode(); 6202 float scale; 6203 if (mInZoomOverview) { 6204 scale = (float) viewWidth 6205 / DEFAULT_VIEWPORT_WIDTH; 6206 } else { 6207 scale = restoreState.mTextWrapScale; 6208 } 6209 setNewZoomScale(scale, Math.abs(scale 6210 - mTextWrapScale) >= MINIMUM_SCALE_INCREMENT, 6211 false); 6212 } 6213 setContentScrollTo(restoreState.mScrollX, 6214 restoreState.mScrollY); 6215 // As we are on a new page, remove the WebTextView. This 6216 // is necessary for page loads driven by webkit, and in 6217 // particular when the user was on a password field, so 6218 // the WebTextView was visible. 6219 clearTextEntry(false); 6220 // update the zoom buttons as the scale can be changed 6221 if (getSettings().getBuiltInZoomControls()) { 6222 updateZoomButtonsEnabled(); 6223 } 6224 } 6225 } 6226 // We update the layout (i.e. request a layout from the 6227 // view system) if the last view size that we sent to 6228 // WebCore matches the view size of the picture we just 6229 // received in the fixed dimension. 6230 final boolean updateLayout = viewSize.x == mLastWidthSent 6231 && viewSize.y == mLastHeightSent; 6232 recordNewContentSize(draw.mWidthHeight.x, 6233 draw.mWidthHeight.y 6234 + (mFindIsUp ? mFindHeight : 0), updateLayout); 6235 if (DebugFlags.WEB_VIEW) { 6236 Rect b = draw.mInvalRegion.getBounds(); 6237 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6238 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6239 } 6240 invalidateContentRect(draw.mInvalRegion.getBounds()); 6241 if (mPictureListener != null) { 6242 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6243 } 6244 if (useWideViewport) { 6245 // limit mZoomOverviewWidth upper bound to 6246 // sMaxViewportWidth so that if the page doesn't behave 6247 // well, the WebView won't go insane. limit the lower 6248 // bound to match the default scale for mobile sites. 6249 mZoomOverviewWidth = Math.min(sMaxViewportWidth, Math 6250 .max((int) (viewWidth / mDefaultScale), Math 6251 .max(draw.mMinPrefWidth, 6252 draw.mViewPoint.x))); 6253 } 6254 if (!mMinZoomScaleFixed) { 6255 mMinZoomScale = (float) viewWidth / mZoomOverviewWidth; 6256 } 6257 if (!mDrawHistory && mInZoomOverview) { 6258 // fit the content width to the current view. Ignore 6259 // the rounding error case. 6260 if (Math.abs((viewWidth * mInvActualScale) 6261 - mZoomOverviewWidth) > 1) { 6262 setNewZoomScale((float) viewWidth 6263 / mZoomOverviewWidth, Math.abs(mActualScale 6264 - mTextWrapScale) < MINIMUM_SCALE_INCREMENT, 6265 false); 6266 } 6267 } 6268 if (draw.mFocusSizeChanged && inEditingMode()) { 6269 mFocusSizeChanged = true; 6270 } 6271 if (hasRestoreState) { 6272 mViewManager.postReadyToDrawAll(); 6273 } 6274 break; 6275 } 6276 case WEBCORE_INITIALIZED_MSG_ID: 6277 // nativeCreate sets mNativeClass to a non-zero value 6278 nativeCreate(msg.arg1); 6279 break; 6280 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6281 // Make sure that the textfield is currently focused 6282 // and representing the same node as the pointer. 6283 if (inEditingMode() && 6284 mWebTextView.isSameTextField(msg.arg1)) { 6285 if (msg.getData().getBoolean("password")) { 6286 Spannable text = (Spannable) mWebTextView.getText(); 6287 int start = Selection.getSelectionStart(text); 6288 int end = Selection.getSelectionEnd(text); 6289 mWebTextView.setInPassword(true); 6290 // Restore the selection, which may have been 6291 // ruined by setInPassword. 6292 Spannable pword = 6293 (Spannable) mWebTextView.getText(); 6294 Selection.setSelection(pword, start, end); 6295 // If the text entry has created more events, ignore 6296 // this one. 6297 } else if (msg.arg2 == mTextGeneration) { 6298 mWebTextView.setTextAndKeepSelection( 6299 (String) msg.obj); 6300 } 6301 } 6302 break; 6303 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6304 displaySoftKeyboard(true); 6305 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6306 (WebViewCore.TextSelectionData) msg.obj); 6307 break; 6308 case UPDATE_TEXT_SELECTION_MSG_ID: 6309 // If no textfield was in focus, and the user touched one, 6310 // causing it to send this message, then WebTextView has not 6311 // been set up yet. Rebuild it so it can set its selection. 6312 rebuildWebTextView(); 6313 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6314 (WebViewCore.TextSelectionData) msg.obj); 6315 break; 6316 case RETURN_LABEL: 6317 if (inEditingMode() 6318 && mWebTextView.isSameTextField(msg.arg1)) { 6319 mWebTextView.setHint((String) msg.obj); 6320 InputMethodManager imm 6321 = InputMethodManager.peekInstance(); 6322 // The hint is propagated to the IME in 6323 // onCreateInputConnection. If the IME is already 6324 // active, restart it so that its hint text is updated. 6325 if (imm != null && imm.isActive(mWebTextView)) { 6326 imm.restartInput(mWebTextView); 6327 } 6328 } 6329 break; 6330 case MOVE_OUT_OF_PLUGIN: 6331 navHandledKey(msg.arg1, 1, false, 0); 6332 break; 6333 case UPDATE_TEXT_ENTRY_MSG_ID: 6334 // this is sent after finishing resize in WebViewCore. Make 6335 // sure the text edit box is still on the screen. 6336 if (inEditingMode() && nativeCursorIsTextInput()) { 6337 mWebTextView.bringIntoView(); 6338 rebuildWebTextView(); 6339 } 6340 break; 6341 case CLEAR_TEXT_ENTRY: 6342 clearTextEntry(false); 6343 break; 6344 case INVAL_RECT_MSG_ID: { 6345 Rect r = (Rect)msg.obj; 6346 if (r == null) { 6347 invalidate(); 6348 } else { 6349 // we need to scale r from content into view coords, 6350 // which viewInvalidate() does for us 6351 viewInvalidate(r.left, r.top, r.right, r.bottom); 6352 } 6353 break; 6354 } 6355 case IMMEDIATE_REPAINT_MSG_ID: { 6356 invalidate(); 6357 break; 6358 } 6359 case SET_ROOT_LAYER_MSG_ID: { 6360 nativeSetRootLayer(msg.arg1); 6361 invalidate(); 6362 break; 6363 } 6364 case REQUEST_FORM_DATA: 6365 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6366 if (mWebTextView.isSameTextField(msg.arg1)) { 6367 mWebTextView.setAdapterCustom(adapter); 6368 } 6369 break; 6370 case RESUME_WEBCORE_PRIORITY: 6371 WebViewCore.resumePriority(); 6372 break; 6373 6374 case LONG_PRESS_CENTER: 6375 // as this is shared by keydown and trackballdown, reset all 6376 // the states 6377 mGotCenterDown = false; 6378 mTrackballDown = false; 6379 performLongClick(); 6380 break; 6381 6382 case WEBCORE_NEED_TOUCH_EVENTS: 6383 mForwardTouchEvents = (msg.arg1 != 0); 6384 break; 6385 6386 case PREVENT_TOUCH_ID: 6387 if (inFullScreenMode()) { 6388 break; 6389 } 6390 if (msg.obj == null) { 6391 if (msg.arg1 == MotionEvent.ACTION_DOWN 6392 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 6393 // if prevent default is called from WebCore, UI 6394 // will not handle the rest of the touch events any 6395 // more. 6396 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6397 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 6398 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 6399 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6400 // the return for the first ACTION_MOVE will decide 6401 // whether UI will handle touch or not. Currently no 6402 // support for alternating prevent default 6403 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6404 : PREVENT_DEFAULT_NO; 6405 } 6406 } else if (msg.arg2 == 0) { 6407 // prevent default is not called in WebCore, so the 6408 // message needs to be reprocessed in UI 6409 TouchEventData ted = (TouchEventData) msg.obj; 6410 switch (ted.mAction) { 6411 case MotionEvent.ACTION_DOWN: 6412 mLastDeferTouchX = contentToViewX(ted.mX) 6413 - mScrollX; 6414 mLastDeferTouchY = contentToViewY(ted.mY) 6415 - mScrollY; 6416 mDeferTouchMode = TOUCH_INIT_MODE; 6417 break; 6418 case MotionEvent.ACTION_MOVE: { 6419 // no snapping in defer process 6420 int x = contentToViewX(ted.mX) - mScrollX; 6421 int y = contentToViewY(ted.mY) - mScrollY; 6422 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 6423 mDeferTouchMode = TOUCH_DRAG_MODE; 6424 mLastDeferTouchX = x; 6425 mLastDeferTouchY = y; 6426 startDrag(); 6427 } 6428 doDrag((int) (mLastDeferTouchX - x), 6429 (int) (mLastDeferTouchY - y)); 6430 mLastDeferTouchX = x; 6431 mLastDeferTouchY = y; 6432 break; 6433 } 6434 case MotionEvent.ACTION_UP: 6435 case MotionEvent.ACTION_CANCEL: 6436 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 6437 // no fling in defer process 6438 mScroller.springback(mScrollX, mScrollY, 0, 6439 computeMaxScrollX(), 0, 6440 computeMaxScrollY()); 6441 invalidate(); 6442 WebViewCore.resumePriority(); 6443 } 6444 mDeferTouchMode = TOUCH_DONE_MODE; 6445 break; 6446 case WebViewCore.ACTION_DOUBLETAP: 6447 // doDoubleTap() needs mLastTouchX/Y as anchor 6448 mLastTouchX = contentToViewX(ted.mX) - mScrollX; 6449 mLastTouchY = contentToViewY(ted.mY) - mScrollY; 6450 doDoubleTap(); 6451 mDeferTouchMode = TOUCH_DONE_MODE; 6452 break; 6453 case WebViewCore.ACTION_LONGPRESS: 6454 HitTestResult hitTest = getHitTestResult(); 6455 if (hitTest != null && hitTest.mType 6456 != HitTestResult.UNKNOWN_TYPE) { 6457 performLongClick(); 6458 rebuildWebTextView(); 6459 } 6460 mDeferTouchMode = TOUCH_DONE_MODE; 6461 break; 6462 } 6463 } 6464 break; 6465 6466 case REQUEST_KEYBOARD: 6467 if (msg.arg1 == 0) { 6468 hideSoftKeyboard(); 6469 } else { 6470 displaySoftKeyboard(false); 6471 } 6472 break; 6473 6474 case FIND_AGAIN: 6475 // Ignore if find has been dismissed. 6476 if (mFindIsUp) { 6477 findAll(mLastFind); 6478 } 6479 break; 6480 6481 case DRAG_HELD_MOTIONLESS: 6482 mHeldMotionless = MOTIONLESS_TRUE; 6483 invalidate(); 6484 // fall through to keep scrollbars awake 6485 6486 case AWAKEN_SCROLL_BARS: 6487 if (mTouchMode == TOUCH_DRAG_MODE 6488 && mHeldMotionless == MOTIONLESS_TRUE) { 6489 awakenScrollBars(ViewConfiguration 6490 .getScrollDefaultDelay(), false); 6491 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6492 .obtainMessage(AWAKEN_SCROLL_BARS), 6493 ViewConfiguration.getScrollDefaultDelay()); 6494 } 6495 break; 6496 6497 case DO_MOTION_UP: 6498 doMotionUp(msg.arg1, msg.arg2); 6499 break; 6500 6501 case SHOW_FULLSCREEN: { 6502 View view = (View) msg.obj; 6503 int npp = msg.arg1; 6504 6505 if (mFullScreenHolder != null) { 6506 Log.w(LOGTAG, "Should not have another full screen."); 6507 mFullScreenHolder.dismiss(); 6508 } 6509 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 6510 mFullScreenHolder.setContentView(view); 6511 mFullScreenHolder.setCancelable(false); 6512 mFullScreenHolder.setCanceledOnTouchOutside(false); 6513 mFullScreenHolder.show(); 6514 6515 break; 6516 } 6517 case HIDE_FULLSCREEN: 6518 if (inFullScreenMode()) { 6519 mFullScreenHolder.dismiss(); 6520 mFullScreenHolder = null; 6521 } 6522 break; 6523 6524 case DOM_FOCUS_CHANGED: 6525 if (inEditingMode()) { 6526 nativeClearCursor(); 6527 rebuildWebTextView(); 6528 } 6529 break; 6530 6531 case SHOW_RECT_MSG_ID: { 6532 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6533 int x = mScrollX; 6534 int left = contentToViewX(data.mLeft); 6535 int width = contentToViewDimension(data.mWidth); 6536 int maxWidth = contentToViewDimension(data.mContentWidth); 6537 int viewWidth = getViewWidth(); 6538 if (width < viewWidth) { 6539 // center align 6540 x += left + width / 2 - mScrollX - viewWidth / 2; 6541 } else { 6542 x += (int) (left + data.mXPercentInDoc * width 6543 - mScrollX - data.mXPercentInView * viewWidth); 6544 } 6545 if (DebugFlags.WEB_VIEW) { 6546 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6547 width + ",maxWidth=" + maxWidth + 6548 ",viewWidth=" + viewWidth + ",x=" 6549 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6550 ",xPercentInView=" + data.mXPercentInView+ ")"); 6551 } 6552 // use the passing content width to cap x as the current 6553 // mContentWidth may not be updated yet 6554 x = Math.max(0, 6555 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6556 int top = contentToViewY(data.mTop); 6557 int height = contentToViewDimension(data.mHeight); 6558 int maxHeight = contentToViewDimension(data.mContentHeight); 6559 int viewHeight = getViewHeight(); 6560 int y = (int) (top + data.mYPercentInDoc * height - 6561 data.mYPercentInView * viewHeight); 6562 if (DebugFlags.WEB_VIEW) { 6563 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6564 height + ",maxHeight=" + maxHeight + 6565 ",viewHeight=" + viewHeight + ",y=" 6566 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6567 ",yPercentInView=" + data.mYPercentInView+ ")"); 6568 } 6569 // use the passing content height to cap y as the current 6570 // mContentHeight may not be updated yet 6571 y = Math.max(0, 6572 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6573 // We need to take into account the visible title height 6574 // when scrolling since y is an absolute view position. 6575 y = Math.max(0, y - getVisibleTitleHeight()); 6576 scrollTo(x, y); 6577 } 6578 break; 6579 6580 case CENTER_FIT_RECT: 6581 Rect r = (Rect)msg.obj; 6582 mInZoomOverview = false; 6583 centerFitRect(r.left, r.top, r.width(), r.height()); 6584 break; 6585 6586 default: 6587 super.handleMessage(msg); 6588 break; 6589 } 6590 } 6591 } 6592 6593 /** 6594 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 6595 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 6596 */ 6597 private void updateTextSelectionFromMessage(int nodePointer, 6598 int textGeneration, WebViewCore.TextSelectionData data) { 6599 if (inEditingMode() 6600 && mWebTextView.isSameTextField(nodePointer) 6601 && textGeneration == mTextGeneration) { 6602 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 6603 } 6604 } 6605 6606 // Class used to use a dropdown for a <select> element 6607 private class InvokeListBox implements Runnable { 6608 // Whether the listbox allows multiple selection. 6609 private boolean mMultiple; 6610 // Passed in to a list with multiple selection to tell 6611 // which items are selected. 6612 private int[] mSelectedArray; 6613 // Passed in to a list with single selection to tell 6614 // where the initial selection is. 6615 private int mSelection; 6616 6617 private Container[] mContainers; 6618 6619 // Need these to provide stable ids to my ArrayAdapter, 6620 // which normally does not have stable ids. (Bug 1250098) 6621 private class Container extends Object { 6622 /** 6623 * Possible values for mEnabled. Keep in sync with OptionStatus in 6624 * WebViewCore.cpp 6625 */ 6626 final static int OPTGROUP = -1; 6627 final static int OPTION_DISABLED = 0; 6628 final static int OPTION_ENABLED = 1; 6629 6630 String mString; 6631 int mEnabled; 6632 int mId; 6633 6634 public String toString() { 6635 return mString; 6636 } 6637 } 6638 6639 /** 6640 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6641 * and allow filtering. 6642 */ 6643 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6644 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6645 super(context, 6646 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6647 com.android.internal.R.layout.select_dialog_singlechoice, 6648 objects); 6649 } 6650 6651 @Override 6652 public View getView(int position, View convertView, 6653 ViewGroup parent) { 6654 // Always pass in null so that we will get a new CheckedTextView 6655 // Otherwise, an item which was previously used as an <optgroup> 6656 // element (i.e. has no check), could get used as an <option> 6657 // element, which needs a checkbox/radio, but it would not have 6658 // one. 6659 convertView = super.getView(position, null, parent); 6660 Container c = item(position); 6661 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6662 // ListView does not draw dividers between disabled and 6663 // enabled elements. Use a LinearLayout to provide dividers 6664 LinearLayout layout = new LinearLayout(mContext); 6665 layout.setOrientation(LinearLayout.VERTICAL); 6666 if (position > 0) { 6667 View dividerTop = new View(mContext); 6668 dividerTop.setBackgroundResource( 6669 android.R.drawable.divider_horizontal_bright); 6670 layout.addView(dividerTop); 6671 } 6672 6673 if (Container.OPTGROUP == c.mEnabled) { 6674 // Currently select_dialog_multichoice and 6675 // select_dialog_singlechoice are CheckedTextViews. If 6676 // that changes, the class cast will no longer be valid. 6677 Assert.assertTrue( 6678 convertView instanceof CheckedTextView); 6679 ((CheckedTextView) convertView).setCheckMarkDrawable( 6680 null); 6681 } else { 6682 // c.mEnabled == Container.OPTION_DISABLED 6683 // Draw the disabled element in a disabled state. 6684 convertView.setEnabled(false); 6685 } 6686 6687 layout.addView(convertView); 6688 if (position < getCount() - 1) { 6689 View dividerBottom = new View(mContext); 6690 dividerBottom.setBackgroundResource( 6691 android.R.drawable.divider_horizontal_bright); 6692 layout.addView(dividerBottom); 6693 } 6694 return layout; 6695 } 6696 return convertView; 6697 } 6698 6699 @Override 6700 public boolean hasStableIds() { 6701 // AdapterView's onChanged method uses this to determine whether 6702 // to restore the old state. Return false so that the old (out 6703 // of date) state does not replace the new, valid state. 6704 return false; 6705 } 6706 6707 private Container item(int position) { 6708 if (position < 0 || position >= getCount()) { 6709 return null; 6710 } 6711 return (Container) getItem(position); 6712 } 6713 6714 @Override 6715 public long getItemId(int position) { 6716 Container item = item(position); 6717 if (item == null) { 6718 return -1; 6719 } 6720 return item.mId; 6721 } 6722 6723 @Override 6724 public boolean areAllItemsEnabled() { 6725 return false; 6726 } 6727 6728 @Override 6729 public boolean isEnabled(int position) { 6730 Container item = item(position); 6731 if (item == null) { 6732 return false; 6733 } 6734 return Container.OPTION_ENABLED == item.mEnabled; 6735 } 6736 } 6737 6738 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6739 mMultiple = true; 6740 mSelectedArray = selected; 6741 6742 int length = array.length; 6743 mContainers = new Container[length]; 6744 for (int i = 0; i < length; i++) { 6745 mContainers[i] = new Container(); 6746 mContainers[i].mString = array[i]; 6747 mContainers[i].mEnabled = enabled[i]; 6748 mContainers[i].mId = i; 6749 } 6750 } 6751 6752 private InvokeListBox(String[] array, int[] enabled, int selection) { 6753 mSelection = selection; 6754 mMultiple = false; 6755 6756 int length = array.length; 6757 mContainers = new Container[length]; 6758 for (int i = 0; i < length; i++) { 6759 mContainers[i] = new Container(); 6760 mContainers[i].mString = array[i]; 6761 mContainers[i].mEnabled = enabled[i]; 6762 mContainers[i].mId = i; 6763 } 6764 } 6765 6766 /* 6767 * Whenever the data set changes due to filtering, this class ensures 6768 * that the checked item remains checked. 6769 */ 6770 private class SingleDataSetObserver extends DataSetObserver { 6771 private long mCheckedId; 6772 private ListView mListView; 6773 private Adapter mAdapter; 6774 6775 /* 6776 * Create a new observer. 6777 * @param id The ID of the item to keep checked. 6778 * @param l ListView for getting and clearing the checked states 6779 * @param a Adapter for getting the IDs 6780 */ 6781 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6782 mCheckedId = id; 6783 mListView = l; 6784 mAdapter = a; 6785 } 6786 6787 public void onChanged() { 6788 // The filter may have changed which item is checked. Find the 6789 // item that the ListView thinks is checked. 6790 int position = mListView.getCheckedItemPosition(); 6791 long id = mAdapter.getItemId(position); 6792 if (mCheckedId != id) { 6793 // Clear the ListView's idea of the checked item, since 6794 // it is incorrect 6795 mListView.clearChoices(); 6796 // Search for mCheckedId. If it is in the filtered list, 6797 // mark it as checked 6798 int count = mAdapter.getCount(); 6799 for (int i = 0; i < count; i++) { 6800 if (mAdapter.getItemId(i) == mCheckedId) { 6801 mListView.setItemChecked(i, true); 6802 break; 6803 } 6804 } 6805 } 6806 } 6807 6808 public void onInvalidate() {} 6809 } 6810 6811 public void run() { 6812 final ListView listView = (ListView) LayoutInflater.from(mContext) 6813 .inflate(com.android.internal.R.layout.select_dialog, null); 6814 final MyArrayListAdapter adapter = new 6815 MyArrayListAdapter(mContext, mContainers, mMultiple); 6816 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6817 .setView(listView).setCancelable(true) 6818 .setInverseBackgroundForced(true); 6819 6820 if (mMultiple) { 6821 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6822 public void onClick(DialogInterface dialog, int which) { 6823 mWebViewCore.sendMessage( 6824 EventHub.LISTBOX_CHOICES, 6825 adapter.getCount(), 0, 6826 listView.getCheckedItemPositions()); 6827 }}); 6828 b.setNegativeButton(android.R.string.cancel, 6829 new DialogInterface.OnClickListener() { 6830 public void onClick(DialogInterface dialog, int which) { 6831 mWebViewCore.sendMessage( 6832 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6833 }}); 6834 } 6835 final AlertDialog dialog = b.create(); 6836 listView.setAdapter(adapter); 6837 listView.setFocusableInTouchMode(true); 6838 // There is a bug (1250103) where the checks in a ListView with 6839 // multiple items selected are associated with the positions, not 6840 // the ids, so the items do not properly retain their checks when 6841 // filtered. Do not allow filtering on multiple lists until 6842 // that bug is fixed. 6843 6844 listView.setTextFilterEnabled(!mMultiple); 6845 if (mMultiple) { 6846 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6847 int length = mSelectedArray.length; 6848 for (int i = 0; i < length; i++) { 6849 listView.setItemChecked(mSelectedArray[i], true); 6850 } 6851 } else { 6852 listView.setOnItemClickListener(new OnItemClickListener() { 6853 public void onItemClick(AdapterView parent, View v, 6854 int position, long id) { 6855 mWebViewCore.sendMessage( 6856 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6857 dialog.dismiss(); 6858 } 6859 }); 6860 if (mSelection != -1) { 6861 listView.setSelection(mSelection); 6862 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6863 listView.setItemChecked(mSelection, true); 6864 DataSetObserver observer = new SingleDataSetObserver( 6865 adapter.getItemId(mSelection), listView, adapter); 6866 adapter.registerDataSetObserver(observer); 6867 } 6868 } 6869 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6870 public void onCancel(DialogInterface dialog) { 6871 mWebViewCore.sendMessage( 6872 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6873 } 6874 }); 6875 dialog.show(); 6876 } 6877 } 6878 6879 /* 6880 * Request a dropdown menu for a listbox with multiple selection. 6881 * 6882 * @param array Labels for the listbox. 6883 * @param enabledArray State for each element in the list. See static 6884 * integers in Container class. 6885 * @param selectedArray Which positions are initally selected. 6886 */ 6887 void requestListBox(String[] array, int[] enabledArray, int[] 6888 selectedArray) { 6889 mPrivateHandler.post( 6890 new InvokeListBox(array, enabledArray, selectedArray)); 6891 } 6892 6893 private void updateZoomRange(WebViewCore.RestoreState restoreState, 6894 int viewWidth, int minPrefWidth, boolean updateZoomOverview) { 6895 if (restoreState.mMinScale == 0) { 6896 if (restoreState.mMobileSite) { 6897 if (minPrefWidth > Math.max(0, viewWidth)) { 6898 mMinZoomScale = (float) viewWidth / minPrefWidth; 6899 mMinZoomScaleFixed = false; 6900 if (updateZoomOverview) { 6901 WebSettings settings = getSettings(); 6902 mInZoomOverview = settings.getUseWideViewPort() && 6903 settings.getLoadWithOverviewMode(); 6904 } 6905 } else { 6906 mMinZoomScale = restoreState.mDefaultScale; 6907 mMinZoomScaleFixed = true; 6908 } 6909 } else { 6910 mMinZoomScale = DEFAULT_MIN_ZOOM_SCALE; 6911 mMinZoomScaleFixed = false; 6912 } 6913 } else { 6914 mMinZoomScale = restoreState.mMinScale; 6915 mMinZoomScaleFixed = true; 6916 } 6917 if (restoreState.mMaxScale == 0) { 6918 mMaxZoomScale = DEFAULT_MAX_ZOOM_SCALE; 6919 } else { 6920 mMaxZoomScale = restoreState.mMaxScale; 6921 } 6922 } 6923 6924 /* 6925 * Request a dropdown menu for a listbox with single selection or a single 6926 * <select> element. 6927 * 6928 * @param array Labels for the listbox. 6929 * @param enabledArray State for each element in the list. See static 6930 * integers in Container class. 6931 * @param selection Which position is initally selected. 6932 */ 6933 void requestListBox(String[] array, int[] enabledArray, int selection) { 6934 mPrivateHandler.post( 6935 new InvokeListBox(array, enabledArray, selection)); 6936 } 6937 6938 // called by JNI 6939 private void sendMoveFocus(int frame, int node) { 6940 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 6941 new WebViewCore.CursorData(frame, node, 0, 0)); 6942 } 6943 6944 // called by JNI 6945 private void sendMoveMouse(int frame, int node, int x, int y) { 6946 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 6947 new WebViewCore.CursorData(frame, node, x, y)); 6948 } 6949 6950 /* 6951 * Send a mouse move event to the webcore thread. 6952 * 6953 * @param removeFocus Pass true if the "mouse" cursor is now over a node 6954 * which wants key events, but it is not the focus. This 6955 * will make the visual appear as though nothing is in 6956 * focus. Remove the WebTextView, if present, and stop 6957 * drawing the blinking caret. 6958 * called by JNI 6959 */ 6960 private void sendMoveMouseIfLatest(boolean removeFocus) { 6961 if (removeFocus) { 6962 clearTextEntry(true); 6963 } 6964 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 6965 cursorData()); 6966 } 6967 6968 // called by JNI 6969 private void sendMotionUp(int touchGeneration, 6970 int frame, int node, int x, int y) { 6971 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6972 touchUpData.mMoveGeneration = touchGeneration; 6973 touchUpData.mFrame = frame; 6974 touchUpData.mNode = node; 6975 touchUpData.mX = x; 6976 touchUpData.mY = y; 6977 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6978 } 6979 6980 6981 private int getScaledMaxXScroll() { 6982 int width; 6983 if (mHeightCanMeasure == false) { 6984 width = getViewWidth() / 4; 6985 } else { 6986 Rect visRect = new Rect(); 6987 calcOurVisibleRect(visRect); 6988 width = visRect.width() / 2; 6989 } 6990 // FIXME the divisor should be retrieved from somewhere 6991 return viewToContentX(width); 6992 } 6993 6994 private int getScaledMaxYScroll() { 6995 int height; 6996 if (mHeightCanMeasure == false) { 6997 height = getViewHeight() / 4; 6998 } else { 6999 Rect visRect = new Rect(); 7000 calcOurVisibleRect(visRect); 7001 height = visRect.height() / 2; 7002 } 7003 // FIXME the divisor should be retrieved from somewhere 7004 // the closest thing today is hard-coded into ScrollView.java 7005 // (from ScrollView.java, line 363) int maxJump = height/2; 7006 return Math.round(height * mInvActualScale); 7007 } 7008 7009 /** 7010 * Called by JNI to invalidate view 7011 */ 7012 private void viewInvalidate() { 7013 invalidate(); 7014 } 7015 7016 /** 7017 * Pass the key to the plugin. This assumes that nativeFocusIsPlugin() 7018 * returned true. 7019 */ 7020 private void letPluginHandleNavKey(int keyCode, long time, boolean down) { 7021 int keyEventAction; 7022 int eventHubAction; 7023 if (down) { 7024 keyEventAction = KeyEvent.ACTION_DOWN; 7025 eventHubAction = EventHub.KEY_DOWN; 7026 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7027 } else { 7028 keyEventAction = KeyEvent.ACTION_UP; 7029 eventHubAction = EventHub.KEY_UP; 7030 } 7031 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7032 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7033 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7034 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7035 , 0, 0, 0); 7036 mWebViewCore.sendMessage(eventHubAction, event); 7037 } 7038 7039 // return true if the key was handled 7040 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7041 long time) { 7042 if (mNativeClass == 0) { 7043 return false; 7044 } 7045 mLastCursorTime = time; 7046 mLastCursorBounds = nativeGetCursorRingBounds(); 7047 boolean keyHandled 7048 = nativeMoveCursor(keyCode, count, noScroll) == false; 7049 if (DebugFlags.WEB_VIEW) { 7050 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7051 + " mLastCursorTime=" + mLastCursorTime 7052 + " handled=" + keyHandled); 7053 } 7054 if (keyHandled == false || mHeightCanMeasure == false) { 7055 return keyHandled; 7056 } 7057 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7058 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7059 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7060 Rect visRect = new Rect(); 7061 calcOurVisibleRect(visRect); 7062 Rect outset = new Rect(visRect); 7063 int maxXScroll = visRect.width() / 2; 7064 int maxYScroll = visRect.height() / 2; 7065 outset.inset(-maxXScroll, -maxYScroll); 7066 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7067 return keyHandled; 7068 } 7069 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7070 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7071 maxXScroll); 7072 if (maxH > 0) { 7073 pinScrollBy(maxH, 0, true, 0); 7074 } else { 7075 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7076 -maxXScroll); 7077 if (maxH < 0) { 7078 pinScrollBy(maxH, 0, true, 0); 7079 } 7080 } 7081 if (mLastCursorBounds.isEmpty()) return keyHandled; 7082 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7083 return keyHandled; 7084 } 7085 if (DebugFlags.WEB_VIEW) { 7086 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7087 + contentCursorRingBounds); 7088 } 7089 requestRectangleOnScreen(viewCursorRingBounds); 7090 mUserScroll = true; 7091 return keyHandled; 7092 } 7093 7094 /** 7095 * Set the background color. It's white by default. Pass 7096 * zero to make the view transparent. 7097 * @param color the ARGB color described by Color.java 7098 */ 7099 public void setBackgroundColor(int color) { 7100 mBackgroundColor = color; 7101 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7102 } 7103 7104 public void debugDump() { 7105 nativeDebugDump(); 7106 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7107 } 7108 7109 /** 7110 * Draw the HTML page into the specified canvas. This call ignores any 7111 * view-specific zoom, scroll offset, or other changes. It does not draw 7112 * any view-specific chrome, such as progress or URL bars. 7113 * 7114 * @hide only needs to be accessible to Browser and testing 7115 */ 7116 public void drawPage(Canvas canvas) { 7117 mWebViewCore.drawContentPicture(canvas, 0, false, false); 7118 } 7119 7120 /** 7121 * Set the time to wait between passing touches to WebCore. See also the 7122 * TOUCH_SENT_INTERVAL member for further discussion. 7123 * 7124 * @hide This is only used by the DRT test application. 7125 */ 7126 public void setTouchInterval(int interval) { 7127 mCurrentTouchInterval = interval; 7128 } 7129 7130 /** 7131 * Update our cache with updatedText. 7132 * @param updatedText The new text to put in our cache. 7133 */ 7134 /* package */ void updateCachedTextfield(String updatedText) { 7135 // Also place our generation number so that when we look at the cache 7136 // we recognize that it is up to date. 7137 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7138 } 7139 7140 private native int nativeCacheHitFramePointer(); 7141 private native Rect nativeCacheHitNodeBounds(); 7142 private native int nativeCacheHitNodePointer(); 7143 /* package */ native void nativeClearCursor(); 7144 private native void nativeCreate(int ptr); 7145 private native int nativeCursorFramePointer(); 7146 private native Rect nativeCursorNodeBounds(); 7147 private native int nativeCursorNodePointer(); 7148 /* package */ native boolean nativeCursorMatchesFocus(); 7149 private native boolean nativeCursorIntersects(Rect visibleRect); 7150 private native boolean nativeCursorIsAnchor(); 7151 private native boolean nativeCursorIsTextInput(); 7152 private native Point nativeCursorPosition(); 7153 private native String nativeCursorText(); 7154 /** 7155 * Returns true if the native cursor node says it wants to handle key events 7156 * (ala plugins). This can only be called if mNativeClass is non-zero! 7157 */ 7158 private native boolean nativeCursorWantsKeyEvents(); 7159 private native void nativeDebugDump(); 7160 private native void nativeDestroy(); 7161 private native boolean nativeEvaluateLayersAnimations(); 7162 private native void nativeDrawExtras(Canvas canvas, int extra); 7163 private native void nativeDumpDisplayTree(String urlOrNull); 7164 private native int nativeFindAll(String findLower, String findUpper); 7165 private native void nativeFindNext(boolean forward); 7166 /* package */ native int nativeFocusCandidateFramePointer(); 7167 private native boolean nativeFocusCandidateIsPassword(); 7168 private native boolean nativeFocusCandidateIsRtlText(); 7169 private native boolean nativeFocusCandidateIsTextInput(); 7170 /* package */ native int nativeFocusCandidateMaxLength(); 7171 /* package */ native String nativeFocusCandidateName(); 7172 private native Rect nativeFocusCandidateNodeBounds(); 7173 private native int nativeFocusCandidatePointer(); 7174 private native String nativeFocusCandidateText(); 7175 private native int nativeFocusCandidateTextSize(); 7176 /** 7177 * Returns an integer corresponding to WebView.cpp::type. 7178 * See WebTextView.setType() 7179 */ 7180 private native int nativeFocusCandidateType(); 7181 private native boolean nativeFocusIsPlugin(); 7182 private native Rect nativeFocusNodeBounds(); 7183 /* package */ native int nativeFocusNodePointer(); 7184 private native Rect nativeGetCursorRingBounds(); 7185 private native String nativeGetSelection(); 7186 private native boolean nativeHasCursorNode(); 7187 private native boolean nativeHasFocusNode(); 7188 private native void nativeHideCursor(); 7189 private native String nativeImageURI(int x, int y); 7190 private native void nativeInstrumentReport(); 7191 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7192 // return true if the page has been scrolled 7193 private native boolean nativeMotionUp(int x, int y, int slop); 7194 // returns false if it handled the key 7195 private native boolean nativeMoveCursor(int keyCode, int count, 7196 boolean noScroll); 7197 private native int nativeMoveGeneration(); 7198 private native void nativeMoveSelection(int x, int y, 7199 boolean extendSelection); 7200 private native boolean nativePointInNavCache(int x, int y, int slop); 7201 // Like many other of our native methods, you must make sure that 7202 // mNativeClass is not null before calling this method. 7203 private native void nativeRecordButtons(boolean focused, 7204 boolean pressed, boolean invalidate); 7205 private native void nativeSelectBestAt(Rect rect); 7206 private native void nativeSetFindIsEmpty(); 7207 private native void nativeSetFindIsUp(boolean isUp); 7208 private native void nativeSetFollowedLink(boolean followed); 7209 private native void nativeSetHeightCanMeasure(boolean measure); 7210 private native void nativeSetRootLayer(int layer); 7211 private native void nativeSetSelectionPointer(boolean set, 7212 float scale, int x, int y, boolean extendSelection); 7213 private native void nativeSetSelectionRegion(boolean set); 7214 private native Rect nativeSubtractLayers(Rect content); 7215 private native int nativeTextGeneration(); 7216 // Never call this version except by updateCachedTextfield(String) - 7217 // we always want to pass in our generation number. 7218 private native void nativeUpdateCachedTextfield(String updatedText, 7219 int generation); 7220 // return NO_LEFTEDGE means failure. 7221 private static final int NO_LEFTEDGE = -1; 7222 private native int nativeGetBlockLeftEdge(int x, int y, float scale); 7223} 7224