WebView.java revision 7400be47b7644c27151d79f77a10067024c96875
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 com.android.internal.R; 20 21import android.annotation.Widget; 22import android.app.AlertDialog; 23import android.content.BroadcastReceiver; 24import android.content.ClipboardManager; 25import android.content.Context; 26import android.content.DialogInterface; 27import android.content.DialogInterface.OnCancelListener; 28import android.content.Intent; 29import android.content.IntentFilter; 30import android.content.pm.PackageInfo; 31import android.content.pm.PackageManager; 32import android.content.res.Configuration; 33import android.content.res.Resources; 34import android.database.DataSetObserver; 35import android.graphics.Bitmap; 36import android.graphics.BitmapFactory; 37import android.graphics.BitmapShader; 38import android.graphics.Canvas; 39import android.graphics.Color; 40import android.graphics.CornerPathEffect; 41import android.graphics.DrawFilter; 42import android.graphics.Paint; 43import android.graphics.PaintFlagsDrawFilter; 44import android.graphics.Picture; 45import android.graphics.Point; 46import android.graphics.Rect; 47import android.graphics.RectF; 48import android.graphics.Region; 49import android.graphics.Shader; 50import android.graphics.drawable.Drawable; 51import android.net.Uri; 52import android.net.http.SslCertificate; 53import android.os.AsyncTask; 54import android.os.Bundle; 55import android.os.Handler; 56import android.os.Message; 57import android.provider.Settings; 58import android.speech.tts.TextToSpeech; 59import android.text.Selection; 60import android.text.Spannable; 61import android.util.AttributeSet; 62import android.util.EventLog; 63import android.util.Log; 64import android.view.Gravity; 65import android.view.KeyCharacterMap; 66import android.view.KeyEvent; 67import android.view.LayoutInflater; 68import android.view.MotionEvent; 69import android.view.ScaleGestureDetector; 70import android.view.SoundEffectConstants; 71import android.view.VelocityTracker; 72import android.view.View; 73import android.view.ViewConfiguration; 74import android.view.ViewGroup; 75import android.view.ViewParent; 76import android.view.ViewTreeObserver; 77import android.view.accessibility.AccessibilityManager; 78import android.view.inputmethod.EditorInfo; 79import android.view.inputmethod.InputConnection; 80import android.view.inputmethod.InputMethodManager; 81import android.webkit.WebTextView.AutoCompleteAdapter; 82import android.webkit.WebViewCore.EventHub; 83import android.webkit.WebViewCore.TouchEventData; 84import android.webkit.WebViewCore.TouchHighlightData; 85import android.widget.AbsoluteLayout; 86import android.widget.Adapter; 87import android.widget.AdapterView; 88import android.widget.AdapterView.OnItemClickListener; 89import android.widget.ArrayAdapter; 90import android.widget.CheckedTextView; 91import android.widget.EdgeGlow; 92import android.widget.LinearLayout; 93import android.widget.ListView; 94import android.widget.OverScroller; 95import android.widget.Toast; 96 97import java.io.File; 98import java.io.FileInputStream; 99import java.io.FileNotFoundException; 100import java.io.FileOutputStream; 101import java.net.URLDecoder; 102import java.util.ArrayList; 103import java.util.HashMap; 104import java.util.HashSet; 105import java.util.List; 106import java.util.Map; 107import java.util.Set; 108import java.util.regex.Matcher; 109import java.util.regex.Pattern; 110 111import junit.framework.Assert; 112 113/** 114 * <p>A View that displays web pages. This class is the basis upon which you 115 * can roll your own web browser or simply display some online content within your Activity. 116 * It uses the WebKit rendering engine to display 117 * web pages and includes methods to navigate forward and backward 118 * through a history, zoom in and out, perform text searches and more.</p> 119 * <p>To enable the built-in zoom, set 120 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 121 * (introduced in API version 3). 122 * <p>Note that, in order for your Activity to access the Internet and load web pages 123 * in a WebView, you must add the {@code INTERNET} permissions to your 124 * Android Manifest file:</p> 125 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 126 * 127 * <p>This must be a child of the <a 128 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 129 * element.</p> 130 * 131 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 132 * tutorial</a>.</p> 133 * 134 * <h3>Basic usage</h3> 135 * 136 * <p>By default, a WebView provides no browser-like widgets, does not 137 * enable JavaScript and web page errors are ignored. If your goal is only 138 * to display some HTML as a part of your UI, this is probably fine; 139 * the user won't need to interact with the web page beyond reading 140 * it, and the web page won't need to interact with the user. If you 141 * actually want a full-blown web browser, then you probably want to 142 * invoke the Browser application with a URL Intent rather than show it 143 * with a WebView. For example: 144 * <pre> 145 * Uri uri = Uri.parse("http://www.example.com"); 146 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 147 * startActivity(intent); 148 * </pre> 149 * <p>See {@link android.content.Intent} for more information.</p> 150 * 151 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 152 * or set the entire Activity window as a WebView during {@link 153 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 154 * <pre class="prettyprint"> 155 * WebView webview = new WebView(this); 156 * setContentView(webview); 157 * </pre> 158 * 159 * <p>Then load the desired web page:</p> 160 * <pre> 161 * // Simplest usage: note that an exception will NOT be thrown 162 * // if there is an error loading this page (see below). 163 * webview.loadUrl("http://slashdot.org/"); 164 * 165 * // OR, you can also load from an HTML string: 166 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 167 * webview.loadData(summary, "text/html", "utf-8"); 168 * // ... although note that there are restrictions on what this HTML can do. 169 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 170 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 171 * </pre> 172 * 173 * <p>A WebView has several customization points where you can add your 174 * own behavior. These are:</p> 175 * 176 * <ul> 177 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 178 * This class is called when something that might impact a 179 * browser UI happens, for instance, progress updates and 180 * JavaScript alerts are sent here (see <a 181 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 182 * </li> 183 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 184 * It will be called when things happen that impact the 185 * rendering of the content, eg, errors or form submissions. You 186 * can also intercept URL loading here (via {@link 187 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 188 * shouldOverrideUrlLoading()}).</li> 189 * <li>Modifying the {@link android.webkit.WebSettings}, such as 190 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 191 * setJavaScriptEnabled()}. </li> 192 * <li>Adding JavaScript-to-Java interfaces with the {@link 193 * android.webkit.WebView#addJavascriptInterface} method. 194 * This lets you bind Java objects into the WebView so they can be 195 * controlled from the web pages JavaScript.</li> 196 * </ul> 197 * 198 * <p>Here's a more complicated example, showing error handling, 199 * settings, and progress notification:</p> 200 * 201 * <pre class="prettyprint"> 202 * // Let's display the progress in the activity title bar, like the 203 * // browser app does. 204 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 205 * 206 * webview.getSettings().setJavaScriptEnabled(true); 207 * 208 * final Activity activity = this; 209 * webview.setWebChromeClient(new WebChromeClient() { 210 * public void onProgressChanged(WebView view, int progress) { 211 * // Activities and WebViews measure progress with different scales. 212 * // The progress meter will automatically disappear when we reach 100% 213 * activity.setProgress(progress * 1000); 214 * } 215 * }); 216 * webview.setWebViewClient(new WebViewClient() { 217 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 218 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 219 * } 220 * }); 221 * 222 * webview.loadUrl("http://slashdot.org/"); 223 * </pre> 224 * 225 * <h3>Cookie and window management</h3> 226 * 227 * <p>For obvious security reasons, your application has its own 228 * cache, cookie store etc.—it does not share the Browser 229 * application's data. Cookies are managed on a separate thread, so 230 * operations like index building don't block the UI 231 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 232 * if you want to use cookies in your application. 233 * </p> 234 * 235 * <p>By default, requests by the HTML to open new windows are 236 * ignored. This is true whether they be opened by JavaScript or by 237 * the target attribute on a link. You can customize your 238 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 239 * and render them in whatever manner you want.</p> 240 * 241 * <p>The standard behavior for an Activity is to be destroyed and 242 * recreated when the device orientation or any other configuration changes. This will cause 243 * the WebView to reload the current page. If you don't want that, you 244 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 245 * changes, and then just leave the WebView alone. It'll automatically 246 * re-orient itself as appropriate. Read <a 247 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 248 * more information about how to handle configuration changes during runtime.</p> 249 * 250 * 251 * <h3>Building web pages to support different screen densities</h3> 252 * 253 * <p>The screen density of a device is based on the screen resolution. A screen with low density 254 * has fewer available pixels per inch, where a screen with high density 255 * has more — sometimes significantly more — pixels per inch. The density of a 256 * screen is important because, other things being equal, a UI element (such as a button) whose 257 * height and width are defined in terms of screen pixels will appear larger on the lower density 258 * screen and smaller on the higher density screen. 259 * For simplicity, Android collapses all actual screen densities into three generalized densities: 260 * high, medium, and low.</p> 261 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 262 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 263 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 264 * are bigger). 265 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 266 * you (as a web developer) target screens with different screen densities.</p> 267 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 268 * <ul> 269 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 270 * default scaling factor used for the current device. For example, if the value of {@code 271 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 272 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 273 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 274 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 275 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 276 * (discussed below), then you can stop this default scaling behavior.</li> 277 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 278 * densities for which this style sheet is to be used. The corresponding value should be either 279 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 280 * density, or high density screens, respectively. For example: 281 * <pre> 282 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 283 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 284 * which is the high density pixel ratio.</p> 285 * </li> 286 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 287 * this to specify the target density for which the web page is designed, using the following 288 * values: 289 * <ul> 290 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 291 * occurs.</li> 292 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 293 * as appropriate.</li> 294 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 295 * low density screens scale down. This is also the default behavior.</li> 296 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 297 * as appropriate.</li> 298 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 299 * values are 70-400).</li> 300 * </ul> 301 * <p>Here's an example meta tag to specify the target density:</p> 302 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 303 * </ul> 304 * <p>If you want to modify your web page for different densities, by using the {@code 305 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 306 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 307 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 308 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 309 * 310 * 311 */ 312@Widget 313public class WebView extends AbsoluteLayout 314 implements ViewTreeObserver.OnGlobalFocusChangeListener, 315 ViewGroup.OnHierarchyChangeListener { 316 317 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 318 public void onGlobalLayout() { 319 if (isShown()) { 320 setGLRectViewport(); 321 } 322 } 323 } 324 325 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 326 public void onScrollChanged() { 327 if (isShown()) { 328 setGLRectViewport(); 329 } 330 } 331 } 332 333 // The listener to capture global layout change event. 334 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 335 336 // The listener to capture scroll event. 337 private InnerScrollChangedListener mScrollChangedListener = null; 338 339 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 340 // the screen all-the-time. Good for profiling our drawing code 341 static private final boolean AUTO_REDRAW_HACK = false; 342 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 343 private boolean mAutoRedraw; 344 345 // Reference to the AlertDialog displayed by InvokeListBox. 346 // It's used to dismiss the dialog in destroy if not done before. 347 private AlertDialog mListBoxDialog = null; 348 349 static final String LOGTAG = "webview"; 350 351 private ZoomManager mZoomManager; 352 353 private Rect mGLRectViewport; 354 355 /** 356 * Transportation object for returning WebView across thread boundaries. 357 */ 358 public class WebViewTransport { 359 private WebView mWebview; 360 361 /** 362 * Set the WebView to the transportation object. 363 * @param webview The WebView to transport. 364 */ 365 public synchronized void setWebView(WebView webview) { 366 mWebview = webview; 367 } 368 369 /** 370 * Return the WebView object. 371 * @return WebView The transported WebView object. 372 */ 373 public synchronized WebView getWebView() { 374 return mWebview; 375 } 376 } 377 378 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 379 private final CallbackProxy mCallbackProxy; 380 381 private final WebViewDatabase mDatabase; 382 383 // SSL certificate for the main top-level page (if secure) 384 private SslCertificate mCertificate; 385 386 // Native WebView pointer that is 0 until the native object has been 387 // created. 388 private int mNativeClass; 389 // This would be final but it needs to be set to null when the WebView is 390 // destroyed. 391 private WebViewCore mWebViewCore; 392 // Handler for dispatching UI messages. 393 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 394 private WebTextView mWebTextView; 395 // Used to ignore changes to webkit text that arrives to the UI side after 396 // more key events. 397 private int mTextGeneration; 398 399 /* package */ void incrementTextGeneration() { mTextGeneration++; } 400 401 // Used by WebViewCore to create child views. 402 /* package */ final ViewManager mViewManager; 403 404 // Used to display in full screen mode 405 PluginFullScreenHolder mFullScreenHolder; 406 407 /** 408 * Position of the last touch event. 409 */ 410 private float mLastTouchX; 411 private float mLastTouchY; 412 413 /** 414 * Time of the last touch event. 415 */ 416 private long mLastTouchTime; 417 418 /** 419 * Time of the last time sending touch event to WebViewCore 420 */ 421 private long mLastSentTouchTime; 422 423 /** 424 * The minimum elapsed time before sending another ACTION_MOVE event to 425 * WebViewCore. This really should be tuned for each type of the devices. 426 * For example in Google Map api test case, it takes Dream device at least 427 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 428 * triggering the layout and drawing the picture. While the same process 429 * takes 60+ms on the current high speed device. If we make 430 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 431 * to WebViewCore queue and the real layout and draw events will be pushed 432 * to further, which slows down the refresh rate. Choose 50 to favor the 433 * current high speed devices. For Dream like devices, 100 is a better 434 * choice. Maybe make this in the buildspec later. 435 */ 436 private static final int TOUCH_SENT_INTERVAL = 50; 437 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 438 439 /** 440 * Helper class to get velocity for fling 441 */ 442 VelocityTracker mVelocityTracker; 443 private int mMaximumFling; 444 private float mLastVelocity; 445 private float mLastVelX; 446 private float mLastVelY; 447 448 // The id of the native layer being scrolled. 449 private int mScrollingLayer; 450 private Rect mScrollingLayerRect = new Rect(); 451 452 // only trigger accelerated fling if the new velocity is at least 453 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 454 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 455 456 /** 457 * Touch mode 458 */ 459 private int mTouchMode = TOUCH_DONE_MODE; 460 private static final int TOUCH_INIT_MODE = 1; 461 private static final int TOUCH_DRAG_START_MODE = 2; 462 private static final int TOUCH_DRAG_MODE = 3; 463 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 464 private static final int TOUCH_SHORTPRESS_MODE = 5; 465 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 466 private static final int TOUCH_DONE_MODE = 7; 467 private static final int TOUCH_PINCH_DRAG = 8; 468 private static final int TOUCH_DRAG_LAYER_MODE = 9; 469 470 // Whether to forward the touch events to WebCore 471 private boolean mForwardTouchEvents = false; 472 473 // Whether to prevent default during touch. The initial value depends on 474 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 475 // for touch down. Otherwise UI will wait for the answer of the first 476 // confirmed move before taking over the control. 477 private static final int PREVENT_DEFAULT_NO = 0; 478 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 479 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 480 private static final int PREVENT_DEFAULT_YES = 3; 481 private static final int PREVENT_DEFAULT_IGNORE = 4; 482 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 483 484 // true when the touch movement exceeds the slop 485 private boolean mConfirmMove; 486 487 // if true, touch events will be first processed by WebCore, if prevent 488 // default is not set, the UI will continue handle them. 489 private boolean mDeferTouchProcess; 490 491 // if true, multi-touch events will be passed to webkit directly before UI 492 private boolean mDeferMultitouch = false; 493 494 // to avoid interfering with the current touch events, track them 495 // separately. Currently no snapping or fling in the deferred process mode 496 private int mDeferTouchMode = TOUCH_DONE_MODE; 497 private float mLastDeferTouchX; 498 private float mLastDeferTouchY; 499 500 // To keep track of whether the current drag was initiated by a WebTextView, 501 // so that we know not to hide the cursor 502 boolean mDragFromTextInput; 503 504 // Whether or not to draw the cursor ring. 505 private boolean mDrawCursorRing = true; 506 507 // true if onPause has been called (and not onResume) 508 private boolean mIsPaused; 509 510 private HitTestResult mInitialHitTestResult; 511 512 /** 513 * Customizable constant 514 */ 515 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 516 private int mTouchSlopSquare; 517 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 518 private int mDoubleTapSlopSquare; 519 // pre-computed density adjusted navigation slop 520 private int mNavSlop; 521 // This should be ViewConfiguration.getTapTimeout() 522 // But system time out is 100ms, which is too short for the browser. 523 // In the browser, if it switches out of tap too soon, jump tap won't work. 524 private static final int TAP_TIMEOUT = 200; 525 // This should be ViewConfiguration.getLongPressTimeout() 526 // But system time out is 500ms, which is too short for the browser. 527 // With a short timeout, it's difficult to treat trigger a short press. 528 private static final int LONG_PRESS_TIMEOUT = 1000; 529 // needed to avoid flinging after a pause of no movement 530 private static final int MIN_FLING_TIME = 250; 531 // draw unfiltered after drag is held without movement 532 private static final int MOTIONLESS_TIME = 100; 533 // The amount of content to overlap between two screens when going through 534 // pages with the space bar, in pixels. 535 private static final int PAGE_SCROLL_OVERLAP = 24; 536 537 /** 538 * These prevent calling requestLayout if either dimension is fixed. This 539 * depends on the layout parameters and the measure specs. 540 */ 541 boolean mWidthCanMeasure; 542 boolean mHeightCanMeasure; 543 544 // Remember the last dimensions we sent to the native side so we can avoid 545 // sending the same dimensions more than once. 546 int mLastWidthSent; 547 int mLastHeightSent; 548 549 private int mContentWidth; // cache of value from WebViewCore 550 private int mContentHeight; // cache of value from WebViewCore 551 552 // Need to have the separate control for horizontal and vertical scrollbar 553 // style than the View's single scrollbar style 554 private boolean mOverlayHorizontalScrollbar = true; 555 private boolean mOverlayVerticalScrollbar = false; 556 557 // our standard speed. this way small distances will be traversed in less 558 // time than large distances, but we cap the duration, so that very large 559 // distances won't take too long to get there. 560 private static final int STD_SPEED = 480; // pixels per second 561 // time for the longest scroll animation 562 private static final int MAX_DURATION = 750; // milliseconds 563 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 564 565 // Used by OverScrollGlow 566 OverScroller mScroller; 567 568 private boolean mInOverScrollMode = false; 569 private static Paint mOverScrollBackground; 570 private static Paint mOverScrollBorder; 571 572 private boolean mWrapContent; 573 private static final int MOTIONLESS_FALSE = 0; 574 private static final int MOTIONLESS_PENDING = 1; 575 private static final int MOTIONLESS_TRUE = 2; 576 private static final int MOTIONLESS_IGNORE = 3; 577 private int mHeldMotionless; 578 579 // An instance for injecting accessibility in WebViews with disabled 580 // JavaScript or ones for which no accessibility script exists 581 private AccessibilityInjector mAccessibilityInjector; 582 583 // flag indicating if accessibility script is injected so we 584 // know to handle Shift and arrows natively first 585 private boolean mAccessibilityScriptInjected; 586 587 // the color used to highlight the touch rectangles 588 private static final int mHightlightColor = 0x33000000; 589 // the round corner for the highlight path 590 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 591 // the region indicating where the user touched on the screen 592 private Region mTouchHighlightRegion = new Region(); 593 // the paint for the touch highlight 594 private Paint mTouchHightlightPaint; 595 // debug only 596 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 597 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 598 private Paint mTouchCrossHairColor; 599 private int mTouchHighlightX; 600 private int mTouchHighlightY; 601 602 /* 603 * Private message ids 604 */ 605 private static final int REMEMBER_PASSWORD = 1; 606 private static final int NEVER_REMEMBER_PASSWORD = 2; 607 private static final int SWITCH_TO_SHORTPRESS = 3; 608 private static final int SWITCH_TO_LONGPRESS = 4; 609 private static final int RELEASE_SINGLE_TAP = 5; 610 private static final int REQUEST_FORM_DATA = 6; 611 private static final int RESUME_WEBCORE_PRIORITY = 7; 612 private static final int DRAG_HELD_MOTIONLESS = 8; 613 private static final int AWAKEN_SCROLL_BARS = 9; 614 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 615 private static final int SCROLL_SELECT_TEXT = 11; 616 617 618 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 619 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 620 621 /* 622 * Package message ids 623 */ 624 //! arg1=x, arg2=y 625 static final int SCROLL_TO_MSG_ID = 101; 626 static final int SCROLL_BY_MSG_ID = 102; 627 //! arg1=x, arg2=y 628 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 629 //! arg1=x, arg2=y 630 static final int SYNC_SCROLL_TO_MSG_ID = 104; 631 static final int NEW_PICTURE_MSG_ID = 105; 632 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 633 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 634 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 635 static final int UPDATE_ZOOM_RANGE = 109; 636 static final int UNHANDLED_NAV_KEY = 110; 637 static final int CLEAR_TEXT_ENTRY = 111; 638 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 639 static final int SHOW_RECT_MSG_ID = 113; 640 static final int LONG_PRESS_CENTER = 114; 641 static final int PREVENT_TOUCH_ID = 115; 642 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 643 // obj=Rect in doc coordinates 644 static final int INVAL_RECT_MSG_ID = 117; 645 static final int REQUEST_KEYBOARD = 118; 646 static final int DO_MOTION_UP = 119; 647 static final int SHOW_FULLSCREEN = 120; 648 static final int HIDE_FULLSCREEN = 121; 649 static final int DOM_FOCUS_CHANGED = 122; 650 static final int REPLACE_BASE_CONTENT = 123; 651 static final int FORM_DID_BLUR = 124; 652 static final int RETURN_LABEL = 125; 653 static final int FIND_AGAIN = 126; 654 static final int CENTER_FIT_RECT = 127; 655 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 656 static final int SET_SCROLLBAR_MODES = 129; 657 static final int SELECTION_STRING_CHANGED = 130; 658 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 659 static final int SAVE_WEBARCHIVE_FINISHED = 132; 660 661 static final int SET_AUTOFILLABLE = 133; 662 static final int AUTOFILL_COMPLETE = 134; 663 664 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 665 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 666 667 static final String[] HandlerPrivateDebugString = { 668 "REMEMBER_PASSWORD", // = 1; 669 "NEVER_REMEMBER_PASSWORD", // = 2; 670 "SWITCH_TO_SHORTPRESS", // = 3; 671 "SWITCH_TO_LONGPRESS", // = 4; 672 "RELEASE_SINGLE_TAP", // = 5; 673 "REQUEST_FORM_DATA", // = 6; 674 "RESUME_WEBCORE_PRIORITY", // = 7; 675 "DRAG_HELD_MOTIONLESS", // = 8; 676 "AWAKEN_SCROLL_BARS", // = 9; 677 "PREVENT_DEFAULT_TIMEOUT", // = 10; 678 "SCROLL_SELECT_TEXT" // = 11; 679 }; 680 681 static final String[] HandlerPackageDebugString = { 682 "SCROLL_TO_MSG_ID", // = 101; 683 "SCROLL_BY_MSG_ID", // = 102; 684 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 685 "SYNC_SCROLL_TO_MSG_ID", // = 104; 686 "NEW_PICTURE_MSG_ID", // = 105; 687 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 688 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 689 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 690 "UPDATE_ZOOM_RANGE", // = 109; 691 "UNHANDLED_NAV_KEY", // = 110; 692 "CLEAR_TEXT_ENTRY", // = 111; 693 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 694 "SHOW_RECT_MSG_ID", // = 113; 695 "LONG_PRESS_CENTER", // = 114; 696 "PREVENT_TOUCH_ID", // = 115; 697 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 698 "INVAL_RECT_MSG_ID", // = 117; 699 "REQUEST_KEYBOARD", // = 118; 700 "DO_MOTION_UP", // = 119; 701 "SHOW_FULLSCREEN", // = 120; 702 "HIDE_FULLSCREEN", // = 121; 703 "DOM_FOCUS_CHANGED", // = 122; 704 "REPLACE_BASE_CONTENT", // = 123; 705 "FORM_DID_BLUR", // = 124; 706 "RETURN_LABEL", // = 125; 707 "FIND_AGAIN", // = 126; 708 "CENTER_FIT_RECT", // = 127; 709 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 710 "SET_SCROLLBAR_MODES", // = 129; 711 "SELECTION_STRING_CHANGED", // = 130; 712 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 713 "SAVE_WEBARCHIVE_FINISHED", // = 132; 714 "SET_AUTOFILLABLE", // = 133; 715 "AUTOFILL_COMPLETE" // = 134; 716 }; 717 718 // If the site doesn't use the viewport meta tag to specify the viewport, 719 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 720 static final int DEFAULT_VIEWPORT_WIDTH = 980; 721 722 // normally we try to fit the content to the minimum preferred width 723 // calculated by the Webkit. To avoid the bad behavior when some site's 724 // minimum preferred width keeps growing when changing the viewport width or 725 // the minimum preferred width is huge, an upper limit is needed. 726 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 727 728 // initial scale in percent. 0 means using default. 729 private int mInitialScaleInPercent = 0; 730 731 private boolean mUserScroll = false; 732 733 private int mSnapScrollMode = SNAP_NONE; 734 private static final int SNAP_NONE = 0; 735 private static final int SNAP_LOCK = 1; // not a separate state 736 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 737 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 738 private boolean mSnapPositive; 739 740 // keep these in sync with their counterparts in WebView.cpp 741 private static final int DRAW_EXTRAS_NONE = 0; 742 private static final int DRAW_EXTRAS_FIND = 1; 743 private static final int DRAW_EXTRAS_SELECTION = 2; 744 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 745 746 // keep this in sync with WebCore:ScrollbarMode in WebKit 747 private static final int SCROLLBAR_AUTO = 0; 748 private static final int SCROLLBAR_ALWAYSOFF = 1; 749 // as we auto fade scrollbar, this is ignored. 750 private static final int SCROLLBAR_ALWAYSON = 2; 751 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 752 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 753 754 // constants for determining script injection strategy 755 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 756 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 757 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 758 759 // the alias via which accessibility JavaScript interface is exposed 760 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 761 762 // JavaScript to inject the script chooser which will 763 // pick the right script for the current URL 764 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 765 "javascript:(function() {" + 766 " var chooser = document.createElement('script');" + 767 " chooser.type = 'text/javascript';" + 768 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 769 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 770 " })();"; 771 772 // Regular expression that matches the "axs" URL parameter. 773 // The value of 0 means the accessibility script is opted out 774 // The value of 1 means the accessibility script is already injected 775 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 776 777 // variable to cache the above pattern in case accessibility is enabled. 778 private Pattern mMatchAxsUrlParameterPattern; 779 780 /** 781 * Max distance to overscroll by in pixels. 782 * This how far content can be pulled beyond its normal bounds by the user. 783 */ 784 private int mOverscrollDistance; 785 786 /** 787 * Max distance to overfling by in pixels. 788 * This is how far flinged content can move beyond the end of its normal bounds. 789 */ 790 private int mOverflingDistance; 791 792 private OverScrollGlow mOverScrollGlow; 793 794 // Used to match key downs and key ups 795 private boolean mGotKeyDown; 796 797 /* package */ static boolean mLogEvent = true; 798 799 // for event log 800 private long mLastTouchUpTime = 0; 801 802 private WebViewCore.AutoFillData mAutoFillData; 803 804 /** 805 * URI scheme for telephone number 806 */ 807 public static final String SCHEME_TEL = "tel:"; 808 /** 809 * URI scheme for email address 810 */ 811 public static final String SCHEME_MAILTO = "mailto:"; 812 /** 813 * URI scheme for map address 814 */ 815 public static final String SCHEME_GEO = "geo:0,0?q="; 816 817 private int mBackgroundColor = Color.WHITE; 818 819 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 820 private int mAutoScrollX = 0; 821 private int mAutoScrollY = 0; 822 private boolean mSentAutoScrollMessage = false; 823 824 // Used to notify listeners of a new picture. 825 private PictureListener mPictureListener; 826 /** 827 * Interface to listen for new pictures as they change. 828 */ 829 public interface PictureListener { 830 /** 831 * Notify the listener that the picture has changed. 832 * @param view The WebView that owns the picture. 833 * @param picture The new picture. 834 */ 835 public void onNewPicture(WebView view, Picture picture); 836 } 837 838 // FIXME: Want to make this public, but need to change the API file. 839 public /*static*/ class HitTestResult { 840 /** 841 * Default HitTestResult, where the target is unknown 842 */ 843 public static final int UNKNOWN_TYPE = 0; 844 /** 845 * HitTestResult for hitting a HTML::a tag 846 */ 847 public static final int ANCHOR_TYPE = 1; 848 /** 849 * HitTestResult for hitting a phone number 850 */ 851 public static final int PHONE_TYPE = 2; 852 /** 853 * HitTestResult for hitting a map address 854 */ 855 public static final int GEO_TYPE = 3; 856 /** 857 * HitTestResult for hitting an email address 858 */ 859 public static final int EMAIL_TYPE = 4; 860 /** 861 * HitTestResult for hitting an HTML::img tag 862 */ 863 public static final int IMAGE_TYPE = 5; 864 /** 865 * HitTestResult for hitting a HTML::a tag which contains HTML::img 866 */ 867 public static final int IMAGE_ANCHOR_TYPE = 6; 868 /** 869 * HitTestResult for hitting a HTML::a tag with src=http 870 */ 871 public static final int SRC_ANCHOR_TYPE = 7; 872 /** 873 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 874 */ 875 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 876 /** 877 * HitTestResult for hitting an edit text area 878 */ 879 public static final int EDIT_TEXT_TYPE = 9; 880 881 private int mType; 882 private String mExtra; 883 884 HitTestResult() { 885 mType = UNKNOWN_TYPE; 886 } 887 888 private void setType(int type) { 889 mType = type; 890 } 891 892 private void setExtra(String extra) { 893 mExtra = extra; 894 } 895 896 public int getType() { 897 return mType; 898 } 899 900 public String getExtra() { 901 return mExtra; 902 } 903 } 904 905 /** 906 * Construct a new WebView with a Context object. 907 * @param context A Context object used to access application assets. 908 */ 909 public WebView(Context context) { 910 this(context, null); 911 } 912 913 /** 914 * Construct a new WebView with layout parameters. 915 * @param context A Context object used to access application assets. 916 * @param attrs An AttributeSet passed to our parent. 917 */ 918 public WebView(Context context, AttributeSet attrs) { 919 this(context, attrs, com.android.internal.R.attr.webViewStyle); 920 } 921 922 /** 923 * Construct a new WebView with layout parameters and a default style. 924 * @param context A Context object used to access application assets. 925 * @param attrs An AttributeSet passed to our parent. 926 * @param defStyle The default style resource ID. 927 */ 928 public WebView(Context context, AttributeSet attrs, int defStyle) { 929 this(context, attrs, defStyle, false); 930 } 931 932 /** 933 * Construct a new WebView with layout parameters and a default style. 934 * @param context A Context object used to access application assets. 935 * @param attrs An AttributeSet passed to our parent. 936 * @param defStyle The default style resource ID. 937 */ 938 public WebView(Context context, AttributeSet attrs, int defStyle, 939 boolean privateBrowsing) { 940 this(context, attrs, defStyle, null, privateBrowsing); 941 } 942 943 /** 944 * Construct a new WebView with layout parameters, a default style and a set 945 * of custom Javscript interfaces to be added to the WebView at initialization 946 * time. This guarantees that these interfaces will be available when the JS 947 * context is initialized. 948 * @param context A Context object used to access application assets. 949 * @param attrs An AttributeSet passed to our parent. 950 * @param defStyle The default style resource ID. 951 * @param javaScriptInterfaces is a Map of interface names, as keys, and 952 * object implementing those interfaces, as values. 953 * @hide pending API council approval. 954 */ 955 protected WebView(Context context, AttributeSet attrs, int defStyle, 956 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 957 super(context, attrs, defStyle); 958 959 // Used by the chrome stack to find application paths 960 JniUtil.setContext(context); 961 962 if (AccessibilityManager.getInstance(context).isEnabled()) { 963 if (javaScriptInterfaces == null) { 964 javaScriptInterfaces = new HashMap<String, Object>(); 965 } 966 exposeAccessibilityJavaScriptApi(javaScriptInterfaces); 967 } 968 969 mCallbackProxy = new CallbackProxy(context, this); 970 mViewManager = new ViewManager(this); 971 L10nUtils.loadStrings(context); 972 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 973 mDatabase = WebViewDatabase.getInstance(context); 974 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 975 mZoomManager = new ZoomManager(this, mCallbackProxy); 976 977 /* The init method must follow the creation of certain member variables, 978 * such as the mZoomManager. 979 */ 980 init(); 981 setupPackageListener(context); 982 updateMultiTouchSupport(context); 983 984 if (privateBrowsing) { 985 startPrivateBrowsing(); 986 } 987 988 mAutoFillData = new WebViewCore.AutoFillData(); 989 } 990 991 /* 992 * The intent receiver that monitors for changes to relevant packages (e.g., 993 * sGoogleApps) and notifies WebViewCore of their existence. 994 */ 995 private static BroadcastReceiver sPackageInstallationReceiver = null; 996 997 /* 998 * A set of Google packages we monitor for the 999 * navigator.isApplicationInstalled() API. Add additional packages as 1000 * needed. 1001 */ 1002 private static Set<String> sGoogleApps; 1003 static { 1004 sGoogleApps = new HashSet<String>(); 1005 sGoogleApps.add("com.google.android.youtube"); 1006 } 1007 1008 private void setupPackageListener(Context context) { 1009 1010 /* 1011 * we must synchronize the instance check and the creation of the 1012 * receiver to ensure that only ONE receiver exists for all WebView 1013 * instances. 1014 */ 1015 synchronized (WebView.class) { 1016 1017 // if the receiver already exists then we do not need to register it 1018 // again 1019 if (sPackageInstallationReceiver != null) { 1020 return; 1021 } 1022 1023 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1024 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1025 filter.addDataScheme("package"); 1026 sPackageInstallationReceiver = new BroadcastReceiver() { 1027 1028 @Override 1029 public void onReceive(Context context, Intent intent) { 1030 final String action = intent.getAction(); 1031 final String packageName = intent.getData().getSchemeSpecificPart(); 1032 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1033 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1034 // if it is replacing, refreshPlugins() when adding 1035 return; 1036 } 1037 1038 if (sGoogleApps.contains(packageName) && mWebViewCore != null) { 1039 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1040 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1041 } else { 1042 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1043 } 1044 } 1045 1046 PluginManager pm = PluginManager.getInstance(context); 1047 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1048 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1049 } 1050 } 1051 }; 1052 1053 context.getApplicationContext().registerReceiver(sPackageInstallationReceiver, filter); 1054 } 1055 1056 // check if any of the monitored apps are already installed 1057 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1058 1059 @Override 1060 protected Set<String> doInBackground(Void... unused) { 1061 Set<String> installedPackages = new HashSet<String>(); 1062 PackageManager pm = mContext.getPackageManager(); 1063 List<PackageInfo> packages = pm.getInstalledPackages(0); 1064 for (PackageInfo p : packages) { 1065 if (sGoogleApps.contains(p.packageName)) { 1066 installedPackages.add(p.packageName); 1067 } 1068 } 1069 return installedPackages; 1070 } 1071 1072 // Executes on the UI thread 1073 @Override 1074 protected void onPostExecute(Set<String> installedPackages) { 1075 if (mWebViewCore != null) { 1076 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1077 } 1078 } 1079 }; 1080 task.execute(); 1081 } 1082 1083 void updateMultiTouchSupport(Context context) { 1084 mZoomManager.updateMultiTouchSupport(context); 1085 } 1086 1087 private void init() { 1088 setWillNotDraw(false); 1089 setFocusable(true); 1090 setFocusableInTouchMode(true); 1091 setClickable(true); 1092 setLongClickable(true); 1093 1094 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1095 int slop = configuration.getScaledTouchSlop(); 1096 mTouchSlopSquare = slop * slop; 1097 mMinLockSnapReverseDistance = slop; 1098 slop = configuration.getScaledDoubleTapSlop(); 1099 mDoubleTapSlopSquare = slop * slop; 1100 final float density = getContext().getResources().getDisplayMetrics().density; 1101 // use one line height, 16 based on our current default font, for how 1102 // far we allow a touch be away from the edge of a link 1103 mNavSlop = (int) (16 * density); 1104 mZoomManager.init(density); 1105 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1106 1107 // Compute the inverse of the density squared. 1108 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1109 1110 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1111 mOverflingDistance = configuration.getScaledOverflingDistance(); 1112 } 1113 1114 /** 1115 * Exposes accessibility APIs to JavaScript by appending them to the JavaScript 1116 * interfaces map provided by the WebView client. In case of conflicting 1117 * alias with the one of the accessibility API the user specified one wins. 1118 * 1119 * @param javaScriptInterfaces A map with interfaces to be exposed to JavaScript. 1120 */ 1121 private void exposeAccessibilityJavaScriptApi(Map<String, Object> javaScriptInterfaces) { 1122 if (javaScriptInterfaces.containsKey(ALIAS_ACCESSIBILITY_JS_INTERFACE)) { 1123 Log.w(LOGTAG, "JavaScript interface mapped to \"" + ALIAS_ACCESSIBILITY_JS_INTERFACE 1124 + "\" overrides the accessibility API JavaScript interface. No accessibility" 1125 + "API will be exposed to JavaScript!"); 1126 return; 1127 } 1128 1129 // expose the TTS for now ... 1130 javaScriptInterfaces.put(ALIAS_ACCESSIBILITY_JS_INTERFACE, 1131 new TextToSpeech(getContext(), null)); 1132 } 1133 1134 @Override 1135 public void setOverScrollMode(int mode) { 1136 super.setOverScrollMode(mode); 1137 if (mode != OVER_SCROLL_NEVER) { 1138 if (mOverScrollGlow == null) { 1139 mOverScrollGlow = new OverScrollGlow(this); 1140 } 1141 } else { 1142 mOverScrollGlow = null; 1143 } 1144 } 1145 1146 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1147 final float density = mContext.getResources().getDisplayMetrics().density 1148 * 100 / zoomDensity; 1149 mNavSlop = (int) (16 * density); 1150 mZoomManager.updateDefaultZoomDensity(density); 1151 } 1152 1153 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1154 String password, final Message resumeMsg) { 1155 boolean rVal = false; 1156 if (resumeMsg == null) { 1157 // null resumeMsg implies saving password silently 1158 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1159 } else { 1160 final Message remember = mPrivateHandler.obtainMessage( 1161 REMEMBER_PASSWORD); 1162 remember.getData().putString("host", schemePlusHost); 1163 remember.getData().putString("username", username); 1164 remember.getData().putString("password", password); 1165 remember.obj = resumeMsg; 1166 1167 final Message neverRemember = mPrivateHandler.obtainMessage( 1168 NEVER_REMEMBER_PASSWORD); 1169 neverRemember.getData().putString("host", schemePlusHost); 1170 neverRemember.getData().putString("username", username); 1171 neverRemember.getData().putString("password", password); 1172 neverRemember.obj = resumeMsg; 1173 1174 new AlertDialog.Builder(getContext()) 1175 .setTitle(com.android.internal.R.string.save_password_label) 1176 .setMessage(com.android.internal.R.string.save_password_message) 1177 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1178 new DialogInterface.OnClickListener() { 1179 public void onClick(DialogInterface dialog, int which) { 1180 resumeMsg.sendToTarget(); 1181 } 1182 }) 1183 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1184 new DialogInterface.OnClickListener() { 1185 public void onClick(DialogInterface dialog, int which) { 1186 remember.sendToTarget(); 1187 } 1188 }) 1189 .setNegativeButton(com.android.internal.R.string.save_password_never, 1190 new DialogInterface.OnClickListener() { 1191 public void onClick(DialogInterface dialog, int which) { 1192 neverRemember.sendToTarget(); 1193 } 1194 }) 1195 .setOnCancelListener(new OnCancelListener() { 1196 public void onCancel(DialogInterface dialog) { 1197 resumeMsg.sendToTarget(); 1198 } 1199 }).show(); 1200 // Return true so that WebViewCore will pause while the dialog is 1201 // up. 1202 rVal = true; 1203 } 1204 return rVal; 1205 } 1206 1207 @Override 1208 public void setScrollBarStyle(int style) { 1209 if (style == View.SCROLLBARS_INSIDE_INSET 1210 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1211 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1212 } else { 1213 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1214 } 1215 super.setScrollBarStyle(style); 1216 } 1217 1218 /** 1219 * Specify whether the horizontal scrollbar has overlay style. 1220 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1221 */ 1222 public void setHorizontalScrollbarOverlay(boolean overlay) { 1223 mOverlayHorizontalScrollbar = overlay; 1224 } 1225 1226 /** 1227 * Specify whether the vertical scrollbar has overlay style. 1228 * @param overlay TRUE if vertical scrollbar should have overlay style. 1229 */ 1230 public void setVerticalScrollbarOverlay(boolean overlay) { 1231 mOverlayVerticalScrollbar = overlay; 1232 } 1233 1234 /** 1235 * Return whether horizontal scrollbar has overlay style 1236 * @return TRUE if horizontal scrollbar has overlay style. 1237 */ 1238 public boolean overlayHorizontalScrollbar() { 1239 return mOverlayHorizontalScrollbar; 1240 } 1241 1242 /** 1243 * Return whether vertical scrollbar has overlay style 1244 * @return TRUE if vertical scrollbar has overlay style. 1245 */ 1246 public boolean overlayVerticalScrollbar() { 1247 return mOverlayVerticalScrollbar; 1248 } 1249 1250 /* 1251 * Return the width of the view where the content of WebView should render 1252 * to. 1253 * Note: this can be called from WebCoreThread. 1254 */ 1255 /* package */ int getViewWidth() { 1256 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1257 return getWidth(); 1258 } else { 1259 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1260 } 1261 } 1262 1263 /* 1264 * returns the height of the titlebarview (if any). Does not care about 1265 * scrolling 1266 */ 1267 int getTitleHeight() { 1268 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1269 } 1270 1271 /* 1272 * Return the amount of the titlebarview (if any) that is visible 1273 * 1274 * @hide 1275 */ 1276 public int getVisibleTitleHeight() { 1277 // need to restrict mScrollY due to over scroll 1278 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1279 } 1280 1281 /* 1282 * Return the height of the view where the content of WebView should render 1283 * to. Note that this excludes mTitleBar, if there is one. 1284 * Note: this can be called from WebCoreThread. 1285 */ 1286 /* package */ int getViewHeight() { 1287 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1288 } 1289 1290 private int getViewHeightWithTitle() { 1291 int height = getHeight(); 1292 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1293 height -= getHorizontalScrollbarHeight(); 1294 } 1295 return height; 1296 } 1297 1298 /** 1299 * @return The SSL certificate for the main top-level page or null if 1300 * there is no certificate (the site is not secure). 1301 */ 1302 public SslCertificate getCertificate() { 1303 return mCertificate; 1304 } 1305 1306 /** 1307 * Sets the SSL certificate for the main top-level page. 1308 */ 1309 public void setCertificate(SslCertificate certificate) { 1310 if (DebugFlags.WEB_VIEW) { 1311 Log.v(LOGTAG, "setCertificate=" + certificate); 1312 } 1313 // here, the certificate can be null (if the site is not secure) 1314 mCertificate = certificate; 1315 } 1316 1317 //------------------------------------------------------------------------- 1318 // Methods called by activity 1319 //------------------------------------------------------------------------- 1320 1321 /** 1322 * Save the username and password for a particular host in the WebView's 1323 * internal database. 1324 * @param host The host that required the credentials. 1325 * @param username The username for the given host. 1326 * @param password The password for the given host. 1327 */ 1328 public void savePassword(String host, String username, String password) { 1329 mDatabase.setUsernamePassword(host, username, password); 1330 } 1331 1332 /** 1333 * Set the HTTP authentication credentials for a given host and realm. 1334 * 1335 * @param host The host for the credentials. 1336 * @param realm The realm for the credentials. 1337 * @param username The username for the password. If it is null, it means 1338 * password can't be saved. 1339 * @param password The password 1340 */ 1341 public void setHttpAuthUsernamePassword(String host, String realm, 1342 String username, String password) { 1343 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1344 } 1345 1346 /** 1347 * Retrieve the HTTP authentication username and password for a given 1348 * host & realm pair 1349 * 1350 * @param host The host for which the credentials apply. 1351 * @param realm The realm for which the credentials apply. 1352 * @return String[] if found, String[0] is username, which can be null and 1353 * String[1] is password. Return null if it can't find anything. 1354 */ 1355 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1356 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1357 } 1358 1359 /** 1360 * Remove Find or Select ActionModes, if active. 1361 */ 1362 private void clearActionModes() { 1363 if (mSelectCallback != null) { 1364 mSelectCallback.finish(); 1365 } 1366 if (mFindCallback != null) { 1367 mFindCallback.finish(); 1368 } 1369 } 1370 1371 /** 1372 * Called to clear state when moving from one page to another, or changing 1373 * in some other way that makes elements associated with the current page 1374 * (such as WebTextView or ActionModes) no longer relevant. 1375 */ 1376 private void clearHelpers() { 1377 clearTextEntry(); 1378 clearActionModes(); 1379 dismissFullScreenMode(); 1380 } 1381 1382 /** 1383 * Destroy the internal state of the WebView. This method should be called 1384 * after the WebView has been removed from the view system. No other 1385 * methods may be called on a WebView after destroy. 1386 */ 1387 public void destroy() { 1388 clearHelpers(); 1389 if (mListBoxDialog != null) { 1390 mListBoxDialog.dismiss(); 1391 mListBoxDialog = null; 1392 } 1393 if (mWebViewCore != null) { 1394 // Set the handlers to null before destroying WebViewCore so no 1395 // more messages will be posted. 1396 mCallbackProxy.setWebViewClient(null); 1397 mCallbackProxy.setWebChromeClient(null); 1398 // Tell WebViewCore to destroy itself 1399 synchronized (this) { 1400 WebViewCore webViewCore = mWebViewCore; 1401 mWebViewCore = null; // prevent using partial webViewCore 1402 webViewCore.destroy(); 1403 } 1404 // Remove any pending messages that might not be serviced yet. 1405 mPrivateHandler.removeCallbacksAndMessages(null); 1406 mCallbackProxy.removeCallbacksAndMessages(null); 1407 // Wake up the WebCore thread just in case it is waiting for a 1408 // JavaScript dialog. 1409 synchronized (mCallbackProxy) { 1410 mCallbackProxy.notify(); 1411 } 1412 } 1413 if (mNativeClass != 0) { 1414 nativeDestroy(); 1415 mNativeClass = 0; 1416 } 1417 } 1418 1419 /** 1420 * Enables platform notifications of data state and proxy changes. 1421 */ 1422 public static void enablePlatformNotifications() { 1423 Network.enablePlatformNotifications(); 1424 } 1425 1426 /** 1427 * If platform notifications are enabled, this should be called 1428 * from the Activity's onPause() or onStop(). 1429 */ 1430 public static void disablePlatformNotifications() { 1431 Network.disablePlatformNotifications(); 1432 } 1433 1434 /** 1435 * Sets JavaScript engine flags. 1436 * 1437 * @param flags JS engine flags in a String 1438 * 1439 * @hide pending API solidification 1440 */ 1441 public void setJsFlags(String flags) { 1442 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1443 } 1444 1445 /** 1446 * Inform WebView of the network state. This is used to set 1447 * the JavaScript property window.navigator.isOnline and 1448 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1449 * @param networkUp boolean indicating if network is available 1450 */ 1451 public void setNetworkAvailable(boolean networkUp) { 1452 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1453 networkUp ? 1 : 0, 0); 1454 } 1455 1456 /** 1457 * Inform WebView about the current network type. 1458 * {@hide} 1459 */ 1460 public void setNetworkType(String type, String subtype) { 1461 Map<String, String> map = new HashMap<String, String>(); 1462 map.put("type", type); 1463 map.put("subtype", subtype); 1464 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1465 } 1466 /** 1467 * Save the state of this WebView used in 1468 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1469 * method no longer stores the display data for this WebView. The previous 1470 * behavior could potentially leak files if {@link #restoreState} was never 1471 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1472 * and restoring the display data. 1473 * @param outState The Bundle to store the WebView state. 1474 * @return The same copy of the back/forward list used to save the state. If 1475 * saveState fails, the returned list will be null. 1476 * @see #savePicture 1477 * @see #restorePicture 1478 */ 1479 public WebBackForwardList saveState(Bundle outState) { 1480 if (outState == null) { 1481 return null; 1482 } 1483 // We grab a copy of the back/forward list because a client of WebView 1484 // may have invalidated the history list by calling clearHistory. 1485 WebBackForwardList list = copyBackForwardList(); 1486 final int currentIndex = list.getCurrentIndex(); 1487 final int size = list.getSize(); 1488 // We should fail saving the state if the list is empty or the index is 1489 // not in a valid range. 1490 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1491 return null; 1492 } 1493 outState.putInt("index", currentIndex); 1494 // FIXME: This should just be a byte[][] instead of ArrayList but 1495 // Parcel.java does not have the code to handle multi-dimensional 1496 // arrays. 1497 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1498 for (int i = 0; i < size; i++) { 1499 WebHistoryItem item = list.getItemAtIndex(i); 1500 if (null == item) { 1501 // FIXME: this shouldn't happen 1502 // need to determine how item got set to null 1503 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1504 return null; 1505 } 1506 byte[] data = item.getFlattenedData(); 1507 if (data == null) { 1508 // It would be very odd to not have any data for a given history 1509 // item. And we will fail to rebuild the history list without 1510 // flattened data. 1511 return null; 1512 } 1513 history.add(data); 1514 } 1515 outState.putSerializable("history", history); 1516 if (mCertificate != null) { 1517 outState.putBundle("certificate", 1518 SslCertificate.saveState(mCertificate)); 1519 } 1520 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1521 mZoomManager.saveZoomState(outState); 1522 return list; 1523 } 1524 1525 /** 1526 * Save the current display data to the Bundle given. Used in conjunction 1527 * with {@link #saveState}. 1528 * @param b A Bundle to store the display data. 1529 * @param dest The file to store the serialized picture data. Will be 1530 * overwritten with this WebView's picture data. 1531 * @return True if the picture was successfully saved. 1532 */ 1533 public boolean savePicture(Bundle b, final File dest) { 1534 if (dest == null || b == null) { 1535 return false; 1536 } 1537 final Picture p = capturePicture(); 1538 // Use a temporary file while writing to ensure the destination file 1539 // contains valid data. 1540 final File temp = new File(dest.getPath() + ".writing"); 1541 new Thread(new Runnable() { 1542 public void run() { 1543 FileOutputStream out = null; 1544 try { 1545 out = new FileOutputStream(temp); 1546 p.writeToStream(out); 1547 // Writing the picture succeeded, rename the temporary file 1548 // to the destination. 1549 temp.renameTo(dest); 1550 } catch (Exception e) { 1551 // too late to do anything about it. 1552 } finally { 1553 if (out != null) { 1554 try { 1555 out.close(); 1556 } catch (Exception e) { 1557 // Can't do anything about that 1558 } 1559 } 1560 temp.delete(); 1561 } 1562 } 1563 }).start(); 1564 // now update the bundle 1565 b.putInt("scrollX", mScrollX); 1566 b.putInt("scrollY", mScrollY); 1567 mZoomManager.saveZoomState(b); 1568 return true; 1569 } 1570 1571 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1572 int sx = b.getInt("scrollX", 0); 1573 int sy = b.getInt("scrollY", 0); 1574 1575 mDrawHistory = true; 1576 mHistoryPicture = p; 1577 mScrollX = sx; 1578 mScrollY = sy; 1579 mZoomManager.restoreZoomState(b); 1580 final float scale = mZoomManager.getScale(); 1581 mHistoryWidth = Math.round(p.getWidth() * scale); 1582 mHistoryHeight = Math.round(p.getHeight() * scale); 1583 1584 invalidate(); 1585 } 1586 1587 /** 1588 * Restore the display data that was save in {@link #savePicture}. Used in 1589 * conjunction with {@link #restoreState}. 1590 * @param b A Bundle containing the saved display data. 1591 * @param src The file where the picture data was stored. 1592 * @return True if the picture was successfully restored. 1593 */ 1594 public boolean restorePicture(Bundle b, File src) { 1595 if (src == null || b == null) { 1596 return false; 1597 } 1598 if (!src.exists()) { 1599 return false; 1600 } 1601 try { 1602 final FileInputStream in = new FileInputStream(src); 1603 final Bundle copy = new Bundle(b); 1604 new Thread(new Runnable() { 1605 public void run() { 1606 try { 1607 final Picture p = Picture.createFromStream(in); 1608 if (p != null) { 1609 // Post a runnable on the main thread to update the 1610 // history picture fields. 1611 mPrivateHandler.post(new Runnable() { 1612 public void run() { 1613 restoreHistoryPictureFields(p, copy); 1614 } 1615 }); 1616 } 1617 } finally { 1618 try { 1619 in.close(); 1620 } catch (Exception e) { 1621 // Nothing we can do now. 1622 } 1623 } 1624 } 1625 }).start(); 1626 } catch (FileNotFoundException e){ 1627 e.printStackTrace(); 1628 } 1629 return true; 1630 } 1631 1632 /** 1633 * Restore the state of this WebView from the given map used in 1634 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1635 * be called to restore the state of the WebView before using the object. If 1636 * it is called after the WebView has had a chance to build state (load 1637 * pages, create a back/forward list, etc.) there may be undesirable 1638 * side-effects. Please note that this method no longer restores the 1639 * display data for this WebView. See {@link #savePicture} and {@link 1640 * #restorePicture} for saving and restoring the display data. 1641 * @param inState The incoming Bundle of state. 1642 * @return The restored back/forward list or null if restoreState failed. 1643 * @see #savePicture 1644 * @see #restorePicture 1645 */ 1646 public WebBackForwardList restoreState(Bundle inState) { 1647 WebBackForwardList returnList = null; 1648 if (inState == null) { 1649 return returnList; 1650 } 1651 if (inState.containsKey("index") && inState.containsKey("history")) { 1652 mCertificate = SslCertificate.restoreState( 1653 inState.getBundle("certificate")); 1654 1655 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1656 final int index = inState.getInt("index"); 1657 // We can't use a clone of the list because we need to modify the 1658 // shared copy, so synchronize instead to prevent concurrent 1659 // modifications. 1660 synchronized (list) { 1661 final List<byte[]> history = 1662 (List<byte[]>) inState.getSerializable("history"); 1663 final int size = history.size(); 1664 // Check the index bounds so we don't crash in native code while 1665 // restoring the history index. 1666 if (index < 0 || index >= size) { 1667 return null; 1668 } 1669 for (int i = 0; i < size; i++) { 1670 byte[] data = history.remove(0); 1671 if (data == null) { 1672 // If we somehow have null data, we cannot reconstruct 1673 // the item and thus our history list cannot be rebuilt. 1674 return null; 1675 } 1676 WebHistoryItem item = new WebHistoryItem(data); 1677 list.addHistoryItem(item); 1678 } 1679 // Grab the most recent copy to return to the caller. 1680 returnList = copyBackForwardList(); 1681 // Update the copy to have the correct index. 1682 returnList.setCurrentIndex(index); 1683 } 1684 // Restore private browsing setting. 1685 if (inState.getBoolean("privateBrowsingEnabled")) { 1686 getSettings().setPrivateBrowsingEnabled(true); 1687 } 1688 mZoomManager.restoreZoomState(inState); 1689 // Remove all pending messages because we are restoring previous 1690 // state. 1691 mWebViewCore.removeMessages(); 1692 // Send a restore state message. 1693 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1694 } 1695 return returnList; 1696 } 1697 1698 /** 1699 * Load the given url with the extra headers. 1700 * @param url The url of the resource to load. 1701 * @param extraHeaders The extra headers sent with this url. This should not 1702 * include the common headers like "user-agent". If it does, it 1703 * will be replaced by the intrinsic value of the WebView. 1704 */ 1705 public void loadUrl(String url, Map<String, String> extraHeaders) { 1706 switchOutDrawHistory(); 1707 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1708 arg.mUrl = url; 1709 arg.mExtraHeaders = extraHeaders; 1710 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1711 clearHelpers(); 1712 } 1713 1714 /** 1715 * Load the given url. 1716 * @param url The url of the resource to load. 1717 */ 1718 public void loadUrl(String url) { 1719 if (url == null) { 1720 return; 1721 } 1722 loadUrl(url, null); 1723 } 1724 1725 /** 1726 * Load the url with postData using "POST" method into the WebView. If url 1727 * is not a network url, it will be loaded with {link 1728 * {@link #loadUrl(String)} instead. 1729 * 1730 * @param url The url of the resource to load. 1731 * @param postData The data will be passed to "POST" request. 1732 */ 1733 public void postUrl(String url, byte[] postData) { 1734 if (URLUtil.isNetworkUrl(url)) { 1735 switchOutDrawHistory(); 1736 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1737 arg.mUrl = url; 1738 arg.mPostData = postData; 1739 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1740 clearHelpers(); 1741 } else { 1742 loadUrl(url); 1743 } 1744 } 1745 1746 /** 1747 * Load the given data into the WebView. This will load the data into 1748 * WebView using the data: scheme. Content loaded through this mechanism 1749 * does not have the ability to load content from the network. 1750 * @param data A String of data in the given encoding. The date must 1751 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1752 * %27, %3f respectively. 1753 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1754 * @param encoding The encoding of the data. i.e. utf-8, base64 1755 */ 1756 public void loadData(String data, String mimeType, String encoding) { 1757 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1758 } 1759 1760 /** 1761 * Load the given data into the WebView, use the provided URL as the base 1762 * URL for the content. The base URL is the URL that represents the page 1763 * that is loaded through this interface. As such, it is used to resolve any 1764 * relative URLs. The historyUrl is used for the history entry. 1765 * <p> 1766 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1767 * files through "file:///android_asset/" for the sub resources is more 1768 * restricted. If you provide null or empty string as baseUrl, you won't be 1769 * able to access asset files. If the baseUrl is anything other than 1770 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1771 * sub resources. 1772 * 1773 * @param baseUrl Url to resolve relative paths with, if null defaults to 1774 * "about:blank" 1775 * @param data A String of data in the given encoding. 1776 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1777 * defaults to "text/html" 1778 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1779 * @param historyUrl URL to use as the history entry. Can be null. 1780 */ 1781 public void loadDataWithBaseURL(String baseUrl, String data, 1782 String mimeType, String encoding, String historyUrl) { 1783 1784 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1785 loadData(data, mimeType, encoding); 1786 return; 1787 } 1788 switchOutDrawHistory(); 1789 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1790 arg.mBaseUrl = baseUrl; 1791 arg.mData = data; 1792 arg.mMimeType = mimeType; 1793 arg.mEncoding = encoding; 1794 arg.mHistoryUrl = historyUrl; 1795 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1796 clearHelpers(); 1797 } 1798 1799 /** 1800 * Saves the current view as a web archive. 1801 * 1802 * @param filename The filename where the archive should be placed. 1803 */ 1804 public void saveWebArchive(String filename) { 1805 saveWebArchive(filename, false, null); 1806 } 1807 1808 /* package */ static class SaveWebArchiveMessage { 1809 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1810 mBasename = basename; 1811 mAutoname = autoname; 1812 mCallback = callback; 1813 } 1814 1815 /* package */ final String mBasename; 1816 /* package */ final boolean mAutoname; 1817 /* package */ final ValueCallback<String> mCallback; 1818 /* package */ String mResultFile; 1819 } 1820 1821 /** 1822 * Saves the current view as a web archive. 1823 * 1824 * @param basename The filename where the archive should be placed. 1825 * @param autoname If false, takes basename to be a file. If true, basename 1826 * is assumed to be a directory in which a filename will be 1827 * chosen according to the url of the current page. 1828 * @param callback Called after the web archive has been saved. The 1829 * parameter for onReceiveValue will either be the filename 1830 * under which the file was saved, or null if saving the 1831 * file failed. 1832 */ 1833 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1834 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1835 new SaveWebArchiveMessage(basename, autoname, callback)); 1836 } 1837 1838 /** 1839 * Stop the current load. 1840 */ 1841 public void stopLoading() { 1842 // TODO: should we clear all the messages in the queue before sending 1843 // STOP_LOADING? 1844 switchOutDrawHistory(); 1845 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1846 } 1847 1848 /** 1849 * Reload the current url. 1850 */ 1851 public void reload() { 1852 clearHelpers(); 1853 switchOutDrawHistory(); 1854 mWebViewCore.sendMessage(EventHub.RELOAD); 1855 } 1856 1857 /** 1858 * Return true if this WebView has a back history item. 1859 * @return True iff this WebView has a back history item. 1860 */ 1861 public boolean canGoBack() { 1862 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1863 synchronized (l) { 1864 if (l.getClearPending()) { 1865 return false; 1866 } else { 1867 return l.getCurrentIndex() > 0; 1868 } 1869 } 1870 } 1871 1872 /** 1873 * Go back in the history of this WebView. 1874 */ 1875 public void goBack() { 1876 goBackOrForward(-1); 1877 } 1878 1879 /** 1880 * Return true if this WebView has a forward history item. 1881 * @return True iff this Webview has a forward history item. 1882 */ 1883 public boolean canGoForward() { 1884 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1885 synchronized (l) { 1886 if (l.getClearPending()) { 1887 return false; 1888 } else { 1889 return l.getCurrentIndex() < l.getSize() - 1; 1890 } 1891 } 1892 } 1893 1894 /** 1895 * Go forward in the history of this WebView. 1896 */ 1897 public void goForward() { 1898 goBackOrForward(1); 1899 } 1900 1901 /** 1902 * Return true if the page can go back or forward the given 1903 * number of steps. 1904 * @param steps The negative or positive number of steps to move the 1905 * history. 1906 */ 1907 public boolean canGoBackOrForward(int steps) { 1908 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1909 synchronized (l) { 1910 if (l.getClearPending()) { 1911 return false; 1912 } else { 1913 int newIndex = l.getCurrentIndex() + steps; 1914 return newIndex >= 0 && newIndex < l.getSize(); 1915 } 1916 } 1917 } 1918 1919 /** 1920 * Go to the history item that is the number of steps away from 1921 * the current item. Steps is negative if backward and positive 1922 * if forward. 1923 * @param steps The number of steps to take back or forward in the back 1924 * forward list. 1925 */ 1926 public void goBackOrForward(int steps) { 1927 goBackOrForward(steps, false); 1928 } 1929 1930 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1931 if (steps != 0) { 1932 clearHelpers(); 1933 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1934 ignoreSnapshot ? 1 : 0); 1935 } 1936 } 1937 1938 /** 1939 * Returns true if private browsing is enabled in this WebView. 1940 */ 1941 public boolean isPrivateBrowsingEnabled() { 1942 return getSettings().isPrivateBrowsingEnabled(); 1943 } 1944 1945 private void startPrivateBrowsing() { 1946 boolean wasPrivateBrowsingEnabled = isPrivateBrowsingEnabled(); 1947 1948 getSettings().setPrivateBrowsingEnabled(true); 1949 1950 if (!wasPrivateBrowsingEnabled) { 1951 loadUrl("browser:incognito"); 1952 } 1953 } 1954 1955 private boolean extendScroll(int y) { 1956 int finalY = mScroller.getFinalY(); 1957 int newY = pinLocY(finalY + y); 1958 if (newY == finalY) return false; 1959 mScroller.setFinalY(newY); 1960 mScroller.extendDuration(computeDuration(0, y)); 1961 return true; 1962 } 1963 1964 /** 1965 * Scroll the contents of the view up by half the view size 1966 * @param top true to jump to the top of the page 1967 * @return true if the page was scrolled 1968 */ 1969 public boolean pageUp(boolean top) { 1970 if (mNativeClass == 0) { 1971 return false; 1972 } 1973 nativeClearCursor(); // start next trackball movement from page edge 1974 if (top) { 1975 // go to the top of the document 1976 return pinScrollTo(mScrollX, 0, true, 0); 1977 } 1978 // Page up 1979 int h = getHeight(); 1980 int y; 1981 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1982 y = -h + PAGE_SCROLL_OVERLAP; 1983 } else { 1984 y = -h / 2; 1985 } 1986 mUserScroll = true; 1987 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1988 : extendScroll(y); 1989 } 1990 1991 /** 1992 * Scroll the contents of the view down by half the page size 1993 * @param bottom true to jump to bottom of page 1994 * @return true if the page was scrolled 1995 */ 1996 public boolean pageDown(boolean bottom) { 1997 if (mNativeClass == 0) { 1998 return false; 1999 } 2000 nativeClearCursor(); // start next trackball movement from page edge 2001 if (bottom) { 2002 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2003 } 2004 // Page down. 2005 int h = getHeight(); 2006 int y; 2007 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2008 y = h - PAGE_SCROLL_OVERLAP; 2009 } else { 2010 y = h / 2; 2011 } 2012 mUserScroll = true; 2013 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2014 : extendScroll(y); 2015 } 2016 2017 /** 2018 * Clear the view so that onDraw() will draw nothing but white background, 2019 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2020 */ 2021 public void clearView() { 2022 mContentWidth = 0; 2023 mContentHeight = 0; 2024 setBaseLayer(0, null); 2025 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2026 } 2027 2028 /** 2029 * Return a new picture that captures the current display of the webview. 2030 * This is a copy of the display, and will be unaffected if the webview 2031 * later loads a different URL. 2032 * 2033 * @return a picture containing the current contents of the view. Note this 2034 * picture is of the entire document, and is not restricted to the 2035 * bounds of the view. 2036 */ 2037 public Picture capturePicture() { 2038 if (mNativeClass == 0) return null; 2039 Picture result = new Picture(); 2040 nativeCopyBaseContentToPicture(result); 2041 return result; 2042 } 2043 2044 /** 2045 * Return true if the browser is displaying a TextView for text input. 2046 */ 2047 private boolean inEditingMode() { 2048 return mWebTextView != null && mWebTextView.getParent() != null; 2049 } 2050 2051 /** 2052 * Remove the WebTextView. 2053 */ 2054 private void clearTextEntry() { 2055 if (inEditingMode()) { 2056 mWebTextView.remove(); 2057 } else { 2058 // The keyboard may be open with the WebView as the served view 2059 hideSoftKeyboard(); 2060 } 2061 } 2062 2063 /** 2064 * Return the current scale of the WebView 2065 * @return The current scale. 2066 */ 2067 public float getScale() { 2068 return mZoomManager.getScale(); 2069 } 2070 2071 /** 2072 * Set the initial scale for the WebView. 0 means default. If 2073 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2074 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2075 * WebView starts will this value as initial scale. 2076 * 2077 * @param scaleInPercent The initial scale in percent. 2078 */ 2079 public void setInitialScale(int scaleInPercent) { 2080 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2081 } 2082 2083 /** 2084 * Invoke the graphical zoom picker widget for this WebView. This will 2085 * result in the zoom widget appearing on the screen to control the zoom 2086 * level of this WebView. 2087 */ 2088 public void invokeZoomPicker() { 2089 if (!getSettings().supportZoom()) { 2090 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2091 return; 2092 } 2093 clearHelpers(); 2094 mZoomManager.invokeZoomPicker(); 2095 } 2096 2097 /** 2098 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2099 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2100 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2101 * anchor does not have a url or if it is a JavaScript url, the type will 2102 * be UNKNOWN_TYPE and the url has to be retrieved through 2103 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2104 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2105 * the "extra" field. A type of 2106 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2107 * a child node. If a phone number is found, the HitTestResult type is set 2108 * to PHONE_TYPE and the phone number is set in the "extra" field of 2109 * HitTestResult. If a map address is found, the HitTestResult type is set 2110 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2111 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2112 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2113 * HitTestResult type is set to UNKNOWN_TYPE. 2114 */ 2115 public HitTestResult getHitTestResult() { 2116 return hitTestResult(mInitialHitTestResult); 2117 } 2118 2119 private HitTestResult hitTestResult(HitTestResult fallback) { 2120 if (mNativeClass == 0) { 2121 return null; 2122 } 2123 2124 HitTestResult result = new HitTestResult(); 2125 if (nativeHasCursorNode()) { 2126 if (nativeCursorIsTextInput()) { 2127 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2128 } else { 2129 String text = nativeCursorText(); 2130 if (text != null) { 2131 if (text.startsWith(SCHEME_TEL)) { 2132 result.setType(HitTestResult.PHONE_TYPE); 2133 result.setExtra(text.substring(SCHEME_TEL.length())); 2134 } else if (text.startsWith(SCHEME_MAILTO)) { 2135 result.setType(HitTestResult.EMAIL_TYPE); 2136 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2137 } else if (text.startsWith(SCHEME_GEO)) { 2138 result.setType(HitTestResult.GEO_TYPE); 2139 result.setExtra(URLDecoder.decode(text 2140 .substring(SCHEME_GEO.length()))); 2141 } else if (nativeCursorIsAnchor()) { 2142 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2143 result.setExtra(text); 2144 } 2145 } 2146 } 2147 } else if (fallback != null) { 2148 /* If webkit causes a rebuild while the long press is in progress, 2149 * the cursor node may be reset, even if it is still around. This 2150 * uses the cursor node saved when the touch began. Since the 2151 * nativeImageURI below only changes the result if it is successful, 2152 * this uses the data beneath the touch if available or the original 2153 * tap data otherwise. 2154 */ 2155 Log.v(LOGTAG, "hitTestResult use fallback"); 2156 result = fallback; 2157 } 2158 int type = result.getType(); 2159 if (type == HitTestResult.UNKNOWN_TYPE 2160 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2161 // Now check to see if it is an image. 2162 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2163 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2164 String text = nativeImageURI(contentX, contentY); 2165 if (text != null) { 2166 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2167 HitTestResult.IMAGE_TYPE : 2168 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2169 result.setExtra(text); 2170 } 2171 } 2172 return result; 2173 } 2174 2175 // Called by JNI when the DOM has changed the focus. Clear the focus so 2176 // that new keys will go to the newly focused field 2177 private void domChangedFocus() { 2178 if (inEditingMode()) { 2179 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2180 } 2181 } 2182 /** 2183 * Request the href of an anchor element due to getFocusNodePath returning 2184 * "href." If hrefMsg is null, this method returns immediately and does not 2185 * dispatch hrefMsg to its target. 2186 * 2187 * @param hrefMsg This message will be dispatched with the result of the 2188 * request as the data member with "url" as key. The result can 2189 * be null. 2190 */ 2191 // FIXME: API change required to change the name of this function. We now 2192 // look at the cursor node, and not the focus node. Also, what is 2193 // getFocusNodePath? 2194 public void requestFocusNodeHref(Message hrefMsg) { 2195 if (hrefMsg == null) { 2196 return; 2197 } 2198 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2199 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2200 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2201 contentX, contentY, hrefMsg); 2202 } 2203 2204 /** 2205 * Request the url of the image last touched by the user. msg will be sent 2206 * to its target with a String representing the url as its object. 2207 * 2208 * @param msg This message will be dispatched with the result of the request 2209 * as the data member with "url" as key. The result can be null. 2210 */ 2211 public void requestImageRef(Message msg) { 2212 if (0 == mNativeClass) return; // client isn't initialized 2213 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2214 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2215 String ref = nativeImageURI(contentX, contentY); 2216 Bundle data = msg.getData(); 2217 data.putString("url", ref); 2218 msg.setData(data); 2219 msg.sendToTarget(); 2220 } 2221 2222 static int pinLoc(int x, int viewMax, int docMax) { 2223// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2224 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2225 // pin the short document to the top/left of the screen 2226 x = 0; 2227// Log.d(LOGTAG, "--- center " + x); 2228 } else if (x < 0) { 2229 x = 0; 2230// Log.d(LOGTAG, "--- zero"); 2231 } else if (x + viewMax > docMax) { 2232 x = docMax - viewMax; 2233// Log.d(LOGTAG, "--- pin " + x); 2234 } 2235 return x; 2236 } 2237 2238 // Expects x in view coordinates 2239 int pinLocX(int x) { 2240 if (mInOverScrollMode) return x; 2241 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2242 } 2243 2244 // Expects y in view coordinates 2245 int pinLocY(int y) { 2246 if (mInOverScrollMode) return y; 2247 return pinLoc(y, getViewHeightWithTitle(), 2248 computeRealVerticalScrollRange() + getTitleHeight()); 2249 } 2250 2251 /** 2252 * A title bar which is embedded in this WebView, and scrolls along with it 2253 * vertically, but not horizontally. 2254 */ 2255 private View mTitleBar; 2256 2257 /** 2258 * Add or remove a title bar to be embedded into the WebView, and scroll 2259 * along with it vertically, while remaining in view horizontally. Pass 2260 * null to remove the title bar from the WebView, and return to drawing 2261 * the WebView normally without translating to account for the title bar. 2262 * @hide 2263 */ 2264 public void setEmbeddedTitleBar(View v) { 2265 if (mTitleBar == v) return; 2266 if (mTitleBar != null) { 2267 removeView(mTitleBar); 2268 } 2269 if (null != v) { 2270 addView(v, new AbsoluteLayout.LayoutParams( 2271 ViewGroup.LayoutParams.MATCH_PARENT, 2272 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2273 } 2274 mTitleBar = v; 2275 } 2276 2277 /** 2278 * Given a distance in view space, convert it to content space. Note: this 2279 * does not reflect translation, just scaling, so this should not be called 2280 * with coordinates, but should be called for dimensions like width or 2281 * height. 2282 */ 2283 private int viewToContentDimension(int d) { 2284 return Math.round(d * mZoomManager.getInvScale()); 2285 } 2286 2287 /** 2288 * Given an x coordinate in view space, convert it to content space. Also 2289 * may be used for absolute heights (such as for the WebTextView's 2290 * textSize, which is unaffected by the height of the title bar). 2291 */ 2292 /*package*/ int viewToContentX(int x) { 2293 return viewToContentDimension(x); 2294 } 2295 2296 /** 2297 * Given a y coordinate in view space, convert it to content space. 2298 * Takes into account the height of the title bar if there is one 2299 * embedded into the WebView. 2300 */ 2301 /*package*/ int viewToContentY(int y) { 2302 return viewToContentDimension(y - getTitleHeight()); 2303 } 2304 2305 /** 2306 * Given a x coordinate in view space, convert it to content space. 2307 * Returns the result as a float. 2308 */ 2309 private float viewToContentXf(int x) { 2310 return x * mZoomManager.getInvScale(); 2311 } 2312 2313 /** 2314 * Given a y coordinate in view space, convert it to content space. 2315 * Takes into account the height of the title bar if there is one 2316 * embedded into the WebView. Returns the result as a float. 2317 */ 2318 private float viewToContentYf(int y) { 2319 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2320 } 2321 2322 /** 2323 * Given a distance in content space, convert it to view space. Note: this 2324 * does not reflect translation, just scaling, so this should not be called 2325 * with coordinates, but should be called for dimensions like width or 2326 * height. 2327 */ 2328 /*package*/ int contentToViewDimension(int d) { 2329 return Math.round(d * mZoomManager.getScale()); 2330 } 2331 2332 /** 2333 * Given an x coordinate in content space, convert it to view 2334 * space. 2335 */ 2336 /*package*/ int contentToViewX(int x) { 2337 return contentToViewDimension(x); 2338 } 2339 2340 /** 2341 * Given a y coordinate in content space, convert it to view 2342 * space. Takes into account the height of the title bar. 2343 */ 2344 /*package*/ int contentToViewY(int y) { 2345 return contentToViewDimension(y) + getTitleHeight(); 2346 } 2347 2348 private Rect contentToViewRect(Rect x) { 2349 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2350 contentToViewX(x.right), contentToViewY(x.bottom)); 2351 } 2352 2353 /* To invalidate a rectangle in content coordinates, we need to transform 2354 the rect into view coordinates, so we can then call invalidate(...). 2355 2356 Normally, we would just call contentToView[XY](...), which eventually 2357 calls Math.round(coordinate * mActualScale). However, for invalidates, 2358 we need to account for the slop that occurs with antialiasing. To 2359 address that, we are a little more liberal in the size of the rect that 2360 we invalidate. 2361 2362 This liberal calculation calls floor() for the top/left, and ceil() for 2363 the bottom/right coordinates. This catches the possible extra pixels of 2364 antialiasing that we might have missed with just round(). 2365 */ 2366 2367 // Called by JNI to invalidate the View, given rectangle coordinates in 2368 // content space 2369 private void viewInvalidate(int l, int t, int r, int b) { 2370 final float scale = mZoomManager.getScale(); 2371 final int dy = getTitleHeight(); 2372 invalidate((int)Math.floor(l * scale), 2373 (int)Math.floor(t * scale) + dy, 2374 (int)Math.ceil(r * scale), 2375 (int)Math.ceil(b * scale) + dy); 2376 } 2377 2378 // Called by JNI to invalidate the View after a delay, given rectangle 2379 // coordinates in content space 2380 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2381 final float scale = mZoomManager.getScale(); 2382 final int dy = getTitleHeight(); 2383 postInvalidateDelayed(delay, 2384 (int)Math.floor(l * scale), 2385 (int)Math.floor(t * scale) + dy, 2386 (int)Math.ceil(r * scale), 2387 (int)Math.ceil(b * scale) + dy); 2388 } 2389 2390 private void invalidateContentRect(Rect r) { 2391 viewInvalidate(r.left, r.top, r.right, r.bottom); 2392 } 2393 2394 // stop the scroll animation, and don't let a subsequent fling add 2395 // to the existing velocity 2396 private void abortAnimation() { 2397 mScroller.abortAnimation(); 2398 mLastVelocity = 0; 2399 } 2400 2401 /* call from webcoreview.draw(), so we're still executing in the UI thread 2402 */ 2403 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2404 2405 // premature data from webkit, ignore 2406 if ((w | h) == 0) { 2407 return; 2408 } 2409 2410 // don't abort a scroll animation if we didn't change anything 2411 if (mContentWidth != w || mContentHeight != h) { 2412 // record new dimensions 2413 mContentWidth = w; 2414 mContentHeight = h; 2415 // If history Picture is drawn, don't update scroll. They will be 2416 // updated when we get out of that mode. 2417 if (!mDrawHistory) { 2418 // repin our scroll, taking into account the new content size 2419 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2420 if (!mScroller.isFinished()) { 2421 // We are in the middle of a scroll. Repin the final scroll 2422 // position. 2423 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2424 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2425 } 2426 } 2427 } 2428 contentSizeChanged(updateLayout); 2429 } 2430 2431 // Used to avoid sending many visible rect messages. 2432 private Rect mLastVisibleRectSent; 2433 private Rect mLastGlobalRect; 2434 2435 Rect sendOurVisibleRect() { 2436 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2437 Rect rect = new Rect(); 2438 calcOurContentVisibleRect(rect); 2439 // Rect.equals() checks for null input. 2440 if (!rect.equals(mLastVisibleRectSent)) { 2441 Point pos = new Point(rect.left, rect.top); 2442 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2443 nativeMoveGeneration(), mUserScroll ? 1 : 0, pos); 2444 mLastVisibleRectSent = rect; 2445 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2446 } 2447 Rect globalRect = new Rect(); 2448 if (getGlobalVisibleRect(globalRect) 2449 && !globalRect.equals(mLastGlobalRect)) { 2450 if (DebugFlags.WEB_VIEW) { 2451 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2452 + globalRect.top + ",r=" + globalRect.right + ",b=" 2453 + globalRect.bottom); 2454 } 2455 // TODO: the global offset is only used by windowRect() 2456 // in ChromeClientAndroid ; other clients such as touch 2457 // and mouse events could return view + screen relative points. 2458 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2459 mLastGlobalRect = globalRect; 2460 } 2461 return rect; 2462 } 2463 2464 // Sets r to be the visible rectangle of our webview in view coordinates 2465 private void calcOurVisibleRect(Rect r) { 2466 Point p = new Point(); 2467 getGlobalVisibleRect(r, p); 2468 r.offset(-p.x, -p.y); 2469 } 2470 2471 // Sets r to be our visible rectangle in content coordinates 2472 private void calcOurContentVisibleRect(Rect r) { 2473 calcOurVisibleRect(r); 2474 r.left = viewToContentX(r.left); 2475 // viewToContentY will remove the total height of the title bar. Add 2476 // the visible height back in to account for the fact that if the title 2477 // bar is partially visible, the part of the visible rect which is 2478 // displaying our content is displaced by that amount. 2479 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2480 r.right = viewToContentX(r.right); 2481 r.bottom = viewToContentY(r.bottom); 2482 } 2483 2484 // Sets r to be our visible rectangle in content coordinates. We use this 2485 // method on the native side to compute the position of the fixed layers. 2486 // Uses floating coordinates (necessary to correctly place elements when 2487 // the scale factor is not 1) 2488 private void calcOurContentVisibleRectF(RectF r) { 2489 Rect ri = new Rect(0,0,0,0); 2490 calcOurVisibleRect(ri); 2491 r.left = viewToContentXf(ri.left); 2492 // viewToContentY will remove the total height of the title bar. Add 2493 // the visible height back in to account for the fact that if the title 2494 // bar is partially visible, the part of the visible rect which is 2495 // displaying our content is displaced by that amount. 2496 r.top = viewToContentYf(ri.top + getVisibleTitleHeight()); 2497 r.right = viewToContentXf(ri.right); 2498 r.bottom = viewToContentYf(ri.bottom); 2499 } 2500 2501 static class ViewSizeData { 2502 int mWidth; 2503 int mHeight; 2504 int mTextWrapWidth; 2505 int mAnchorX; 2506 int mAnchorY; 2507 float mScale; 2508 boolean mIgnoreHeight; 2509 } 2510 2511 /** 2512 * Compute unzoomed width and height, and if they differ from the last 2513 * values we sent, send them to webkit (to be used as new viewport) 2514 * 2515 * @param force ensures that the message is sent to webkit even if the width 2516 * or height has not changed since the last message 2517 * 2518 * @return true if new values were sent 2519 */ 2520 boolean sendViewSizeZoom(boolean force) { 2521 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2522 2523 int viewWidth = getViewWidth(); 2524 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2525 int newHeight = Math.round((getViewHeightWithTitle() - getTitleHeight()) * mZoomManager.getInvScale()); 2526 /* 2527 * Because the native side may have already done a layout before the 2528 * View system was able to measure us, we have to send a height of 0 to 2529 * remove excess whitespace when we grow our width. This will trigger a 2530 * layout and a change in content size. This content size change will 2531 * mean that contentSizeChanged will either call this method directly or 2532 * indirectly from onSizeChanged. 2533 */ 2534 if (newWidth > mLastWidthSent && mWrapContent) { 2535 newHeight = 0; 2536 } 2537 // Avoid sending another message if the dimensions have not changed. 2538 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force) { 2539 ViewSizeData data = new ViewSizeData(); 2540 data.mWidth = newWidth; 2541 data.mHeight = newHeight; 2542 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2543 data.mScale = mZoomManager.getScale(); 2544 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2545 && !mHeightCanMeasure; 2546 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2547 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2548 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2549 mLastWidthSent = newWidth; 2550 mLastHeightSent = newHeight; 2551 mZoomManager.clearDocumentAnchor(); 2552 return true; 2553 } 2554 return false; 2555 } 2556 2557 private int computeRealHorizontalScrollRange() { 2558 if (mDrawHistory) { 2559 return mHistoryWidth; 2560 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2561 && !mZoomManager.canZoomOut()) { 2562 // only honor the scrollbar mode when it is at minimum zoom level 2563 return computeHorizontalScrollExtent(); 2564 } else { 2565 // to avoid rounding error caused unnecessary scrollbar, use floor 2566 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2567 } 2568 } 2569 2570 @Override 2571 protected int computeHorizontalScrollRange() { 2572 int range = computeRealHorizontalScrollRange(); 2573 2574 // Adjust reported range if overscrolled to compress the scroll bars 2575 final int scrollX = mScrollX; 2576 final int overscrollRight = computeMaxScrollX(); 2577 if (scrollX < 0) { 2578 range -= scrollX; 2579 } else if (scrollX > overscrollRight) { 2580 range += scrollX - overscrollRight; 2581 } 2582 2583 return range; 2584 } 2585 2586 @Override 2587 protected int computeHorizontalScrollOffset() { 2588 return Math.max(mScrollX, 0); 2589 } 2590 2591 private int computeRealVerticalScrollRange() { 2592 if (mDrawHistory) { 2593 return mHistoryHeight; 2594 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2595 && !mZoomManager.canZoomOut()) { 2596 // only honor the scrollbar mode when it is at minimum zoom level 2597 return computeVerticalScrollExtent(); 2598 } else { 2599 // to avoid rounding error caused unnecessary scrollbar, use floor 2600 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2601 } 2602 } 2603 2604 @Override 2605 protected int computeVerticalScrollRange() { 2606 int range = computeRealVerticalScrollRange(); 2607 2608 // Adjust reported range if overscrolled to compress the scroll bars 2609 final int scrollY = mScrollY; 2610 final int overscrollBottom = computeMaxScrollY(); 2611 if (scrollY < 0) { 2612 range -= scrollY; 2613 } else if (scrollY > overscrollBottom) { 2614 range += scrollY - overscrollBottom; 2615 } 2616 2617 return range; 2618 } 2619 2620 @Override 2621 protected int computeVerticalScrollOffset() { 2622 return Math.max(mScrollY - getTitleHeight(), 0); 2623 } 2624 2625 @Override 2626 protected int computeVerticalScrollExtent() { 2627 return getViewHeight(); 2628 } 2629 2630 /** @hide */ 2631 @Override 2632 protected void onDrawVerticalScrollBar(Canvas canvas, 2633 Drawable scrollBar, 2634 int l, int t, int r, int b) { 2635 if (mScrollY < 0) { 2636 t -= mScrollY; 2637 } 2638 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2639 scrollBar.draw(canvas); 2640 } 2641 2642 @Override 2643 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2644 boolean clampedY) { 2645 // Special-case layer scrolling so that we do not trigger normal scroll 2646 // updating. 2647 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2648 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2649 mScrollingLayerRect.left = scrollX; 2650 mScrollingLayerRect.top = scrollY; 2651 invalidate(); 2652 return; 2653 } 2654 mInOverScrollMode = false; 2655 int maxX = computeMaxScrollX(); 2656 int maxY = computeMaxScrollY(); 2657 if (maxX == 0) { 2658 // do not over scroll x if the page just fits the screen 2659 scrollX = pinLocX(scrollX); 2660 } else if (scrollX < 0 || scrollX > maxX) { 2661 mInOverScrollMode = true; 2662 } 2663 if (scrollY < 0 || scrollY > maxY) { 2664 mInOverScrollMode = true; 2665 } 2666 2667 int oldX = mScrollX; 2668 int oldY = mScrollY; 2669 2670 super.scrollTo(scrollX, scrollY); 2671 2672 if (mOverScrollGlow != null) { 2673 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2674 } 2675 } 2676 2677 /** 2678 * Get the url for the current page. This is not always the same as the url 2679 * passed to WebViewClient.onPageStarted because although the load for 2680 * that url has begun, the current page may not have changed. 2681 * @return The url for the current page. 2682 */ 2683 public String getUrl() { 2684 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2685 return h != null ? h.getUrl() : null; 2686 } 2687 2688 /** 2689 * Get the original url for the current page. This is not always the same 2690 * as the url passed to WebViewClient.onPageStarted because although the 2691 * load for that url has begun, the current page may not have changed. 2692 * Also, there may have been redirects resulting in a different url to that 2693 * originally requested. 2694 * @return The url that was originally requested for the current page. 2695 */ 2696 public String getOriginalUrl() { 2697 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2698 return h != null ? h.getOriginalUrl() : null; 2699 } 2700 2701 /** 2702 * Get the title for the current page. This is the title of the current page 2703 * until WebViewClient.onReceivedTitle is called. 2704 * @return The title for the current page. 2705 */ 2706 public String getTitle() { 2707 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2708 return h != null ? h.getTitle() : null; 2709 } 2710 2711 /** 2712 * Get the favicon for the current page. This is the favicon of the current 2713 * page until WebViewClient.onReceivedIcon is called. 2714 * @return The favicon for the current page. 2715 */ 2716 public Bitmap getFavicon() { 2717 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2718 return h != null ? h.getFavicon() : null; 2719 } 2720 2721 /** 2722 * Get the touch icon url for the apple-touch-icon <link> element, or 2723 * a URL on this site's server pointing to the standard location of a 2724 * touch icon. 2725 * @hide 2726 */ 2727 public String getTouchIconUrl() { 2728 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2729 return h != null ? h.getTouchIconUrl() : null; 2730 } 2731 2732 /** 2733 * Get the progress for the current page. 2734 * @return The progress for the current page between 0 and 100. 2735 */ 2736 public int getProgress() { 2737 return mCallbackProxy.getProgress(); 2738 } 2739 2740 /** 2741 * @return the height of the HTML content. 2742 */ 2743 public int getContentHeight() { 2744 return mContentHeight; 2745 } 2746 2747 /** 2748 * @return the width of the HTML content. 2749 * @hide 2750 */ 2751 public int getContentWidth() { 2752 return mContentWidth; 2753 } 2754 2755 /** 2756 * Pause all layout, parsing, and JavaScript timers for all webviews. This 2757 * is a global requests, not restricted to just this webview. This can be 2758 * useful if the application has been paused. 2759 */ 2760 public void pauseTimers() { 2761 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2762 } 2763 2764 /** 2765 * Resume all layout, parsing, and JavaScript timers for all webviews. 2766 * This will resume dispatching all timers. 2767 */ 2768 public void resumeTimers() { 2769 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2770 } 2771 2772 /** 2773 * Call this to pause any extra processing associated with this WebView and 2774 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 2775 * is taken offscreen, this could be called to reduce unnecessary CPU or 2776 * network traffic. When the WebView is again "active", call onResume(). 2777 * 2778 * Note that this differs from pauseTimers(), which affects all WebViews. 2779 */ 2780 public void onPause() { 2781 if (!mIsPaused) { 2782 mIsPaused = true; 2783 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2784 } 2785 } 2786 2787 /** 2788 * Call this to resume a WebView after a previous call to onPause(). 2789 */ 2790 public void onResume() { 2791 if (mIsPaused) { 2792 mIsPaused = false; 2793 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2794 } 2795 } 2796 2797 /** 2798 * Returns true if the view is paused, meaning onPause() was called. Calling 2799 * onResume() sets the paused state back to false. 2800 * @hide 2801 */ 2802 public boolean isPaused() { 2803 return mIsPaused; 2804 } 2805 2806 /** 2807 * Call this to inform the view that memory is low so that it can 2808 * free any available memory. 2809 */ 2810 public void freeMemory() { 2811 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2812 } 2813 2814 /** 2815 * Clear the resource cache. Note that the cache is per-application, so 2816 * this will clear the cache for all WebViews used. 2817 * 2818 * @param includeDiskFiles If false, only the RAM cache is cleared. 2819 */ 2820 public void clearCache(boolean includeDiskFiles) { 2821 // Note: this really needs to be a static method as it clears cache for all 2822 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2823 // we can't make this static. 2824 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2825 includeDiskFiles ? 1 : 0, 0); 2826 } 2827 2828 /** 2829 * Make sure that clearing the form data removes the adapter from the 2830 * currently focused textfield if there is one. 2831 */ 2832 public void clearFormData() { 2833 if (inEditingMode()) { 2834 AutoCompleteAdapter adapter = null; 2835 mWebTextView.setAdapterCustom(adapter); 2836 } 2837 } 2838 2839 /** 2840 * Tell the WebView to clear its internal back/forward list. 2841 */ 2842 public void clearHistory() { 2843 mCallbackProxy.getBackForwardList().setClearPending(); 2844 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2845 } 2846 2847 /** 2848 * Clear the SSL preferences table stored in response to proceeding with SSL 2849 * certificate errors. 2850 */ 2851 public void clearSslPreferences() { 2852 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2853 } 2854 2855 /** 2856 * Return the WebBackForwardList for this WebView. This contains the 2857 * back/forward list for use in querying each item in the history stack. 2858 * This is a copy of the private WebBackForwardList so it contains only a 2859 * snapshot of the current state. Multiple calls to this method may return 2860 * different objects. The object returned from this method will not be 2861 * updated to reflect any new state. 2862 */ 2863 public WebBackForwardList copyBackForwardList() { 2864 return mCallbackProxy.getBackForwardList().clone(); 2865 } 2866 2867 /* 2868 * Highlight and scroll to the next occurance of String in findAll. 2869 * Wraps the page infinitely, and scrolls. Must be called after 2870 * calling findAll. 2871 * 2872 * @param forward Direction to search. 2873 */ 2874 public void findNext(boolean forward) { 2875 if (0 == mNativeClass) return; // client isn't initialized 2876 nativeFindNext(forward); 2877 } 2878 2879 /* 2880 * Find all instances of find on the page and highlight them. 2881 * @param find String to find. 2882 * @return int The number of occurances of the String "find" 2883 * that were found. 2884 */ 2885 public int findAll(String find) { 2886 if (0 == mNativeClass) return 0; // client isn't initialized 2887 int result = find != null ? nativeFindAll(find.toLowerCase(), 2888 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 2889 invalidate(); 2890 mLastFind = find; 2891 return result; 2892 } 2893 2894 /** 2895 * Start an ActionMode for finding text in this WebView. 2896 * @param text If non-null, will be the initial text to search for. 2897 * Otherwise, the last String searched for in this WebView will 2898 * be used to start. 2899 */ 2900 public void showFindDialog(String text) { 2901 mFindCallback = new FindActionModeCallback(mContext); 2902 setFindIsUp(true); 2903 mFindCallback.setWebView(this); 2904 View titleBar = mTitleBar; 2905 startActionMode(mFindCallback); 2906 if (text == null) { 2907 text = mLastFind; 2908 } 2909 if (text != null) { 2910 mFindCallback.setText(text); 2911 } 2912 } 2913 2914 /** 2915 * Keep track of the find callback so that we can remove its titlebar if 2916 * necessary. 2917 */ 2918 private FindActionModeCallback mFindCallback; 2919 2920 /** 2921 * Toggle whether the find dialog is showing, for both native and Java. 2922 */ 2923 private void setFindIsUp(boolean isUp) { 2924 mFindIsUp = isUp; 2925 if (0 == mNativeClass) return; // client isn't initialized 2926 nativeSetFindIsUp(isUp); 2927 } 2928 2929 /** 2930 * Return the index of the currently highlighted match. 2931 */ 2932 int findIndex() { 2933 if (0 == mNativeClass) return -1; 2934 return nativeFindIndex(); 2935 } 2936 2937 // Used to know whether the find dialog is open. Affects whether 2938 // or not we draw the highlights for matches. 2939 private boolean mFindIsUp; 2940 2941 // Keep track of the last string sent, so we can search again when find is 2942 // reopened. 2943 private String mLastFind; 2944 2945 /** 2946 * Return the first substring consisting of the address of a physical 2947 * location. Currently, only addresses in the United States are detected, 2948 * and consist of: 2949 * - a house number 2950 * - a street name 2951 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2952 * - a city name 2953 * - a state or territory, either spelled out or two-letter abbr. 2954 * - an optional 5 digit or 9 digit zip code. 2955 * 2956 * All names must be correctly capitalized, and the zip code, if present, 2957 * must be valid for the state. The street type must be a standard USPS 2958 * spelling or abbreviation. The state or territory must also be spelled 2959 * or abbreviated using USPS standards. The house number may not exceed 2960 * five digits. 2961 * @param addr The string to search for addresses. 2962 * 2963 * @return the address, or if no address is found, return null. 2964 */ 2965 public static String findAddress(String addr) { 2966 return findAddress(addr, false); 2967 } 2968 2969 /** 2970 * @hide 2971 * Return the first substring consisting of the address of a physical 2972 * location. Currently, only addresses in the United States are detected, 2973 * and consist of: 2974 * - a house number 2975 * - a street name 2976 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2977 * - a city name 2978 * - a state or territory, either spelled out or two-letter abbr. 2979 * - an optional 5 digit or 9 digit zip code. 2980 * 2981 * Names are optionally capitalized, and the zip code, if present, 2982 * must be valid for the state. The street type must be a standard USPS 2983 * spelling or abbreviation. The state or territory must also be spelled 2984 * or abbreviated using USPS standards. The house number may not exceed 2985 * five digits. 2986 * @param addr The string to search for addresses. 2987 * @param caseInsensitive addr Set to true to make search ignore case. 2988 * 2989 * @return the address, or if no address is found, return null. 2990 */ 2991 public static String findAddress(String addr, boolean caseInsensitive) { 2992 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2993 } 2994 2995 /* 2996 * Clear the highlighting surrounding text matches created by findAll. 2997 */ 2998 public void clearMatches() { 2999 if (mNativeClass == 0) 3000 return; 3001 nativeSetFindIsEmpty(); 3002 invalidate(); 3003 } 3004 3005 /** 3006 * Called when the find ActionMode ends. 3007 */ 3008 void notifyFindDialogDismissed() { 3009 mFindCallback = null; 3010 if (mWebViewCore == null) { 3011 return; 3012 } 3013 clearMatches(); 3014 setFindIsUp(false); 3015 // Now that the dialog has been removed, ensure that we scroll to a 3016 // location that is not beyond the end of the page. 3017 pinScrollTo(mScrollX, mScrollY, false, 0); 3018 invalidate(); 3019 } 3020 3021 /** 3022 * Query the document to see if it contains any image references. The 3023 * message object will be dispatched with arg1 being set to 1 if images 3024 * were found and 0 if the document does not reference any images. 3025 * @param response The message that will be dispatched with the result. 3026 */ 3027 public void documentHasImages(Message response) { 3028 if (response == null) { 3029 return; 3030 } 3031 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3032 } 3033 3034 /** 3035 * Request the scroller to abort any ongoing animation 3036 * 3037 * @hide 3038 */ 3039 public void stopScroll() { 3040 mScroller.forceFinished(true); 3041 mLastVelocity = 0; 3042 } 3043 3044 @Override 3045 public void computeScroll() { 3046 if (mScroller.computeScrollOffset()) { 3047 int oldX = mScrollX; 3048 int oldY = mScrollY; 3049 int x = mScroller.getCurrX(); 3050 int y = mScroller.getCurrY(); 3051 invalidate(); // So we draw again 3052 3053 if (!mScroller.isFinished()) { 3054 int rangeX = computeMaxScrollX(); 3055 int rangeY = computeMaxScrollY(); 3056 int overflingDistance = mOverflingDistance; 3057 3058 // Use the layer's scroll data if needed. 3059 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3060 oldX = mScrollingLayerRect.left; 3061 oldY = mScrollingLayerRect.top; 3062 rangeX = mScrollingLayerRect.right; 3063 rangeY = mScrollingLayerRect.bottom; 3064 // No overscrolling for layers. 3065 overflingDistance = 0; 3066 } 3067 3068 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3069 rangeX, rangeY, 3070 overflingDistance, overflingDistance, false); 3071 3072 if (mOverScrollGlow != null) { 3073 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3074 } 3075 } else { 3076 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3077 mScrollX = x; 3078 mScrollY = y; 3079 } else { 3080 // Update the layer position instead of WebView. 3081 nativeScrollLayer(mScrollingLayer, x, y); 3082 mScrollingLayerRect.left = x; 3083 mScrollingLayerRect.top = y; 3084 } 3085 abortAnimation(); 3086 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3087 WebViewCore.resumePriority(); 3088 if (!mSelectingText) { 3089 WebViewCore.resumeUpdatePicture(mWebViewCore); 3090 } 3091 } 3092 } else { 3093 super.computeScroll(); 3094 } 3095 } 3096 3097 private static int computeDuration(int dx, int dy) { 3098 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3099 int duration = distance * 1000 / STD_SPEED; 3100 return Math.min(duration, MAX_DURATION); 3101 } 3102 3103 // helper to pin the scrollBy parameters (already in view coordinates) 3104 // returns true if the scroll was changed 3105 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3106 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3107 } 3108 // helper to pin the scrollTo parameters (already in view coordinates) 3109 // returns true if the scroll was changed 3110 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3111 x = pinLocX(x); 3112 y = pinLocY(y); 3113 int dx = x - mScrollX; 3114 int dy = y - mScrollY; 3115 3116 if ((dx | dy) == 0) { 3117 return false; 3118 } 3119 abortAnimation(); 3120 if (animate) { 3121 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3122 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3123 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3124 awakenScrollBars(mScroller.getDuration()); 3125 invalidate(); 3126 } else { 3127 scrollTo(x, y); 3128 } 3129 return true; 3130 } 3131 3132 // Scale from content to view coordinates, and pin. 3133 // Also called by jni webview.cpp 3134 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3135 if (mDrawHistory) { 3136 // disallow WebView to change the scroll position as History Picture 3137 // is used in the view system. 3138 // TODO: as we switchOutDrawHistory when trackball or navigation 3139 // keys are hit, this should be safe. Right? 3140 return false; 3141 } 3142 cx = contentToViewDimension(cx); 3143 cy = contentToViewDimension(cy); 3144 if (mHeightCanMeasure) { 3145 // move our visible rect according to scroll request 3146 if (cy != 0) { 3147 Rect tempRect = new Rect(); 3148 calcOurVisibleRect(tempRect); 3149 tempRect.offset(cx, cy); 3150 requestRectangleOnScreen(tempRect); 3151 } 3152 // FIXME: We scroll horizontally no matter what because currently 3153 // ScrollView and ListView will not scroll horizontally. 3154 // FIXME: Why do we only scroll horizontally if there is no 3155 // vertical scroll? 3156// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3157 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3158 } else { 3159 return pinScrollBy(cx, cy, animate, 0); 3160 } 3161 } 3162 3163 /** 3164 * Called by CallbackProxy when the page starts loading. 3165 * @param url The URL of the page which has started loading. 3166 */ 3167 /* package */ void onPageStarted(String url) { 3168 // every time we start a new page, we want to reset the 3169 // WebView certificate: if the new site is secure, we 3170 // will reload it and get a new certificate set; 3171 // if the new site is not secure, the certificate must be 3172 // null, and that will be the case 3173 setCertificate(null); 3174 3175 // reset the flag since we set to true in if need after 3176 // loading is see onPageFinished(Url) 3177 mAccessibilityScriptInjected = false; 3178 } 3179 3180 /** 3181 * Called by CallbackProxy when the page finishes loading. 3182 * @param url The URL of the page which has finished loading. 3183 */ 3184 /* package */ void onPageFinished(String url) { 3185 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3186 // If the user is now on a different page, or has scrolled the page 3187 // past the point where the title bar is offscreen, ignore the 3188 // scroll request. 3189 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3190 && mScrollX == 0 && mScrollY == 0) { 3191 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3192 SLIDE_TITLE_DURATION); 3193 } 3194 mPageThatNeedsToSlideTitleBarOffScreen = null; 3195 } 3196 3197 injectAccessibilityForUrl(url); 3198 } 3199 3200 /** 3201 * This method injects accessibility in the loaded document if accessibility 3202 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3203 * If no URL specific script is found or JavaScript is disabled we fallback to 3204 * the default {@link AccessibilityInjector} implementation. 3205 * </p> 3206 * If the URL has the "axs" paramter set to 1 it has already done the 3207 * script injection so we do nothing. If the parameter is set to 0 3208 * the URL opts out accessibility script injection so we fall back to 3209 * the default {@link AccessibilityInjector}. 3210 * </p> 3211 * Note: If the user has not opted-in the accessibility script injection no scripts 3212 * are injected rather the default {@link AccessibilityInjector} implementation 3213 * is used. 3214 * 3215 * @param url The URL loaded by this {@link WebView}. 3216 */ 3217 private void injectAccessibilityForUrl(String url) { 3218 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3219 3220 if (!accessibilityManager.isEnabled()) { 3221 // it is possible that accessibility was turned off between reloads 3222 ensureAccessibilityScriptInjectorInstance(false); 3223 return; 3224 } 3225 3226 if (!getSettings().getJavaScriptEnabled()) { 3227 // no JS so we fallback to the basic buil-in support 3228 ensureAccessibilityScriptInjectorInstance(true); 3229 return; 3230 } 3231 3232 // check the URL "axs" parameter to choose appropriate action 3233 int axsParameterValue = getAxsUrlParameterValue(url); 3234 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3235 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3236 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3237 if (onDeviceScriptInjectionEnabled) { 3238 ensureAccessibilityScriptInjectorInstance(false); 3239 // neither script injected nor script injection opted out => we inject 3240 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3241 // TODO: Set this flag after successfull script injection. Maybe upon injection 3242 // the chooser should update the meta tag and we check it to declare success 3243 mAccessibilityScriptInjected = true; 3244 } else { 3245 // injection disabled so we fallback to the basic built-in support 3246 ensureAccessibilityScriptInjectorInstance(true); 3247 } 3248 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3249 // injection opted out so we fallback to the basic buil-in support 3250 ensureAccessibilityScriptInjectorInstance(true); 3251 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3252 ensureAccessibilityScriptInjectorInstance(false); 3253 // the URL provides accessibility but we still need to add our generic script 3254 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3255 } else { 3256 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3257 } 3258 } 3259 3260 /** 3261 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3262 * 3263 * @param present True to ensure an insance, false to ensure no instance. 3264 */ 3265 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3266 if (present && mAccessibilityInjector == null) { 3267 mAccessibilityInjector = new AccessibilityInjector(this); 3268 } else { 3269 mAccessibilityInjector = null; 3270 } 3271 } 3272 3273 /** 3274 * Gets the "axs" URL parameter value. 3275 * 3276 * @param url A url to fetch the paramter from. 3277 * @return The parameter value if such, -1 otherwise. 3278 */ 3279 private int getAxsUrlParameterValue(String url) { 3280 if (mMatchAxsUrlParameterPattern == null) { 3281 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3282 } 3283 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3284 if (matcher.find()) { 3285 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3286 return Integer.parseInt(keyValuePair.split("=")[1]); 3287 } 3288 return -1; 3289 } 3290 3291 /** 3292 * The URL of a page that sent a message to scroll the title bar off screen. 3293 * 3294 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3295 * title bar off the screen. Sometimes, the scroll position is set before 3296 * the page finishes loading. Rather than scrolling while the page is still 3297 * loading, keep track of the URL and new scroll position so we can perform 3298 * the scroll once the page finishes loading. 3299 */ 3300 private String mPageThatNeedsToSlideTitleBarOffScreen; 3301 3302 /** 3303 * The destination Y scroll position to be used when the page finishes 3304 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3305 */ 3306 private int mYDistanceToSlideTitleOffScreen; 3307 3308 // scale from content to view coordinates, and pin 3309 // return true if pin caused the final x/y different than the request cx/cy, 3310 // and a future scroll may reach the request cx/cy after our size has 3311 // changed 3312 // return false if the view scroll to the exact position as it is requested, 3313 // where negative numbers are taken to mean 0 3314 private boolean setContentScrollTo(int cx, int cy) { 3315 if (mDrawHistory) { 3316 // disallow WebView to change the scroll position as History Picture 3317 // is used in the view system. 3318 // One known case where this is called is that WebCore tries to 3319 // restore the scroll position. As history Picture already uses the 3320 // saved scroll position, it is ok to skip this. 3321 return false; 3322 } 3323 int vx; 3324 int vy; 3325 if ((cx | cy) == 0) { 3326 // If the page is being scrolled to (0,0), do not add in the title 3327 // bar's height, and simply scroll to (0,0). (The only other work 3328 // in contentToView_ is to multiply, so this would not change 0.) 3329 vx = 0; 3330 vy = 0; 3331 } else { 3332 vx = contentToViewX(cx); 3333 vy = contentToViewY(cy); 3334 } 3335// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3336// vx + " " + vy + "]"); 3337 // Some mobile sites attempt to scroll the title bar off the page by 3338 // scrolling to (0,1). If we are at the top left corner of the 3339 // page, assume this is an attempt to scroll off the title bar, and 3340 // animate the title bar off screen slowly enough that the user can see 3341 // it. 3342 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3343 && mTitleBar != null) { 3344 // FIXME: 100 should be defined somewhere as our max progress. 3345 if (getProgress() < 100) { 3346 // Wait to scroll the title bar off screen until the page has 3347 // finished loading. Keep track of the URL and the destination 3348 // Y position 3349 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3350 mYDistanceToSlideTitleOffScreen = vy; 3351 } else { 3352 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3353 } 3354 // Since we are animating, we have not yet reached the desired 3355 // scroll position. Do not return true to request another attempt 3356 return false; 3357 } 3358 pinScrollTo(vx, vy, false, 0); 3359 // If the request was to scroll to a negative coordinate, treat it as if 3360 // it was a request to scroll to 0 3361 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3362 return true; 3363 } else { 3364 return false; 3365 } 3366 } 3367 3368 // scale from content to view coordinates, and pin 3369 private void spawnContentScrollTo(int cx, int cy) { 3370 if (mDrawHistory) { 3371 // disallow WebView to change the scroll position as History Picture 3372 // is used in the view system. 3373 return; 3374 } 3375 int vx = contentToViewX(cx); 3376 int vy = contentToViewY(cy); 3377 pinScrollTo(vx, vy, true, 0); 3378 } 3379 3380 /** 3381 * These are from webkit, and are in content coordinate system (unzoomed) 3382 */ 3383 private void contentSizeChanged(boolean updateLayout) { 3384 // suppress 0,0 since we usually see real dimensions soon after 3385 // this avoids drawing the prev content in a funny place. If we find a 3386 // way to consolidate these notifications, this check may become 3387 // obsolete 3388 if ((mContentWidth | mContentHeight) == 0) { 3389 return; 3390 } 3391 3392 if (mHeightCanMeasure) { 3393 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3394 || updateLayout) { 3395 requestLayout(); 3396 } 3397 } else if (mWidthCanMeasure) { 3398 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3399 || updateLayout) { 3400 requestLayout(); 3401 } 3402 } else { 3403 // If we don't request a layout, try to send our view size to the 3404 // native side to ensure that WebCore has the correct dimensions. 3405 sendViewSizeZoom(false); 3406 } 3407 } 3408 3409 /** 3410 * Set the WebViewClient that will receive various notifications and 3411 * requests. This will replace the current handler. 3412 * @param client An implementation of WebViewClient. 3413 */ 3414 public void setWebViewClient(WebViewClient client) { 3415 mCallbackProxy.setWebViewClient(client); 3416 } 3417 3418 /** 3419 * Gets the WebViewClient 3420 * @return the current WebViewClient instance. 3421 * 3422 *@hide pending API council approval. 3423 */ 3424 public WebViewClient getWebViewClient() { 3425 return mCallbackProxy.getWebViewClient(); 3426 } 3427 3428 /** 3429 * Register the interface to be used when content can not be handled by 3430 * the rendering engine, and should be downloaded instead. This will replace 3431 * the current handler. 3432 * @param listener An implementation of DownloadListener. 3433 */ 3434 public void setDownloadListener(DownloadListener listener) { 3435 mCallbackProxy.setDownloadListener(listener); 3436 } 3437 3438 /** 3439 * Set the chrome handler. This is an implementation of WebChromeClient for 3440 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3441 * This will replace the current handler. 3442 * @param client An implementation of WebChromeClient. 3443 */ 3444 public void setWebChromeClient(WebChromeClient client) { 3445 mCallbackProxy.setWebChromeClient(client); 3446 } 3447 3448 /** 3449 * Gets the chrome handler. 3450 * @return the current WebChromeClient instance. 3451 * 3452 * @hide API council approval. 3453 */ 3454 public WebChromeClient getWebChromeClient() { 3455 return mCallbackProxy.getWebChromeClient(); 3456 } 3457 3458 /** 3459 * Set the back/forward list client. This is an implementation of 3460 * WebBackForwardListClient for handling new items and changes in the 3461 * history index. 3462 * @param client An implementation of WebBackForwardListClient. 3463 * {@hide} 3464 */ 3465 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3466 mCallbackProxy.setWebBackForwardListClient(client); 3467 } 3468 3469 /** 3470 * Gets the WebBackForwardListClient. 3471 * {@hide} 3472 */ 3473 public WebBackForwardListClient getWebBackForwardListClient() { 3474 return mCallbackProxy.getWebBackForwardListClient(); 3475 } 3476 3477 /** 3478 * Set the Picture listener. This is an interface used to receive 3479 * notifications of a new Picture. 3480 * @param listener An implementation of WebView.PictureListener. 3481 */ 3482 public void setPictureListener(PictureListener listener) { 3483 mPictureListener = listener; 3484 } 3485 3486 /** 3487 * {@hide} 3488 */ 3489 /* FIXME: Debug only! Remove for SDK! */ 3490 public void externalRepresentation(Message callback) { 3491 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3492 } 3493 3494 /** 3495 * {@hide} 3496 */ 3497 /* FIXME: Debug only! Remove for SDK! */ 3498 public void documentAsText(Message callback) { 3499 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3500 } 3501 3502 /** 3503 * Use this function to bind an object to JavaScript so that the 3504 * methods can be accessed from JavaScript. 3505 * <p><strong>IMPORTANT:</strong> 3506 * <ul> 3507 * <li> Using addJavascriptInterface() allows JavaScript to control your 3508 * application. This can be a very useful feature or a dangerous security 3509 * issue. When the HTML in the WebView is untrustworthy (for example, part 3510 * or all of the HTML is provided by some person or process), then an 3511 * attacker could inject HTML that will execute your code and possibly any 3512 * code of the attacker's choosing.<br> 3513 * Do not use addJavascriptInterface() unless all of the HTML in this 3514 * WebView was written by you.</li> 3515 * <li> The Java object that is bound runs in another thread and not in 3516 * the thread that it was constructed in.</li> 3517 * </ul></p> 3518 * @param obj The class instance to bind to JavaScript, null instances are 3519 * ignored. 3520 * @param interfaceName The name to used to expose the instance in 3521 * JavaScript. 3522 */ 3523 public void addJavascriptInterface(Object obj, String interfaceName) { 3524 if (obj == null) { 3525 return; 3526 } 3527 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3528 arg.mObject = obj; 3529 arg.mInterfaceName = interfaceName; 3530 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3531 } 3532 3533 /** 3534 * Removes a previously added JavaScript interface with the given name. 3535 * @param interfaceName The name of the interface to remove. 3536 */ 3537 public void removeJavascriptInterface(String interfaceName) { 3538 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3539 arg.mInterfaceName = interfaceName; 3540 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3541 } 3542 3543 /** 3544 * Return the WebSettings object used to control the settings for this 3545 * WebView. 3546 * @return A WebSettings object that can be used to control this WebView's 3547 * settings. 3548 */ 3549 public WebSettings getSettings() { 3550 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3551 } 3552 3553 /** 3554 * Return the list of currently loaded plugins. 3555 * @return The list of currently loaded plugins. 3556 * 3557 * @deprecated This was used for Gears, which has been deprecated. 3558 */ 3559 @Deprecated 3560 public static synchronized PluginList getPluginList() { 3561 return new PluginList(); 3562 } 3563 3564 /** 3565 * @deprecated This was used for Gears, which has been deprecated. 3566 */ 3567 @Deprecated 3568 public void refreshPlugins(boolean reloadOpenPages) { } 3569 3570 //------------------------------------------------------------------------- 3571 // Override View methods 3572 //------------------------------------------------------------------------- 3573 3574 @Override 3575 protected void finalize() throws Throwable { 3576 try { 3577 destroy(); 3578 } finally { 3579 super.finalize(); 3580 } 3581 } 3582 3583 @Override 3584 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3585 if (child == mTitleBar) { 3586 // When drawing the title bar, move it horizontally to always show 3587 // at the top of the WebView. 3588 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3589 int newTop = Math.min(0, mScrollY); 3590 mTitleBar.setBottom(newTop + getTitleHeight()); 3591 mTitleBar.setTop(newTop); 3592 } 3593 return super.drawChild(canvas, child, drawingTime); 3594 } 3595 3596 private void drawContent(Canvas canvas) { 3597 // Update the buttons in the picture, so when we draw the picture 3598 // to the screen, they are in the correct state. 3599 // Tell the native side if user is a) touching the screen, 3600 // b) pressing the trackball down, or c) pressing the enter key 3601 // If the cursor is on a button, we need to draw it in the pressed 3602 // state. 3603 // If mNativeClass is 0, we should not reach here, so we do not 3604 // need to check it again. 3605 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3606 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3607 || mTrackballDown || mGotCenterDown, false); 3608 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3609 } 3610 3611 /** 3612 * Draw the background when beyond bounds 3613 * @param canvas Canvas to draw into 3614 */ 3615 private void drawOverScrollBackground(Canvas canvas) { 3616 if (mOverScrollBackground == null) { 3617 mOverScrollBackground = new Paint(); 3618 Bitmap bm = BitmapFactory.decodeResource( 3619 mContext.getResources(), 3620 com.android.internal.R.drawable.status_bar_background); 3621 mOverScrollBackground.setShader(new BitmapShader(bm, 3622 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3623 mOverScrollBorder = new Paint(); 3624 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3625 mOverScrollBorder.setStrokeWidth(0); 3626 mOverScrollBorder.setColor(0xffbbbbbb); 3627 } 3628 3629 int top = 0; 3630 int right = computeRealHorizontalScrollRange(); 3631 int bottom = top + computeRealVerticalScrollRange(); 3632 // first draw the background and anchor to the top of the view 3633 canvas.save(); 3634 canvas.translate(mScrollX, mScrollY); 3635 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3636 - mScrollY, Region.Op.DIFFERENCE); 3637 canvas.drawPaint(mOverScrollBackground); 3638 canvas.restore(); 3639 // then draw the border 3640 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3641 // next clip the region for the content 3642 canvas.clipRect(0, top, right, bottom); 3643 } 3644 3645 @Override 3646 protected void onDraw(Canvas canvas) { 3647 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3648 if (mNativeClass == 0) { 3649 return; 3650 } 3651 3652 // if both mContentWidth and mContentHeight are 0, it means there is no 3653 // valid Picture passed to WebView yet. This can happen when WebView 3654 // just starts. Draw the background and return. 3655 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3656 canvas.drawColor(mBackgroundColor); 3657 return; 3658 } 3659 3660 int saveCount = canvas.save(); 3661 if (mInOverScrollMode && !getSettings() 3662 .getUseWebViewBackgroundForOverscrollBackground()) { 3663 drawOverScrollBackground(canvas); 3664 } 3665 if (mTitleBar != null) { 3666 canvas.translate(0, (int) mTitleBar.getHeight()); 3667 } 3668 drawContent(canvas); 3669 canvas.restoreToCount(saveCount); 3670 3671 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3672 invalidate(); 3673 } 3674 if (inEditingMode()) { 3675 mWebTextView.onDrawSubstitute(); 3676 } 3677 mWebViewCore.signalRepaintDone(); 3678 3679 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3680 invalidate(); 3681 } 3682 3683 // paint the highlight in the end 3684 if (!mTouchHighlightRegion.isEmpty()) { 3685 if (mTouchHightlightPaint == null) { 3686 mTouchHightlightPaint = new Paint(); 3687 mTouchHightlightPaint.setColor(mHightlightColor); 3688 mTouchHightlightPaint.setAntiAlias(true); 3689 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3690 TOUCH_HIGHLIGHT_ARC)); 3691 } 3692 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3693 mTouchHightlightPaint); 3694 } 3695 if (DEBUG_TOUCH_HIGHLIGHT) { 3696 if (getSettings().getNavDump()) { 3697 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3698 if (mTouchCrossHairColor == null) { 3699 mTouchCrossHairColor = new Paint(); 3700 mTouchCrossHairColor.setColor(Color.RED); 3701 } 3702 canvas.drawLine(mTouchHighlightX - mNavSlop, 3703 mTouchHighlightY - mNavSlop, mTouchHighlightX 3704 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3705 + 1, mTouchCrossHairColor); 3706 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3707 mTouchHighlightY - mNavSlop, mTouchHighlightX 3708 - mNavSlop, 3709 mTouchHighlightY + mNavSlop + 1, 3710 mTouchCrossHairColor); 3711 } 3712 } 3713 } 3714 } 3715 3716 private void removeTouchHighlight(boolean removePendingMessage) { 3717 if (removePendingMessage) { 3718 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3719 } 3720 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3721 } 3722 3723 @Override 3724 public void setLayoutParams(ViewGroup.LayoutParams params) { 3725 if (params.height == LayoutParams.WRAP_CONTENT) { 3726 mWrapContent = true; 3727 } 3728 super.setLayoutParams(params); 3729 } 3730 3731 @Override 3732 public boolean performLongClick() { 3733 // performLongClick() is the result of a delayed message. If we switch 3734 // to windows overview, the WebView will be temporarily removed from the 3735 // view system. In that case, do nothing. 3736 if (getParent() == null) return false; 3737 3738 // A multi-finger gesture can look like a long press; make sure we don't take 3739 // long press actions if we're scaling. 3740 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3741 if (detector != null && detector.isInProgress()) { 3742 return false; 3743 } 3744 3745 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3746 // Send the click so that the textfield is in focus 3747 centerKeyPressOnTextField(); 3748 rebuildWebTextView(); 3749 } else { 3750 clearTextEntry(); 3751 } 3752 if (inEditingMode()) { 3753 return mWebTextView.performLongClick(); 3754 } 3755 if (mSelectingText) return false; // long click does nothing on selection 3756 /* if long click brings up a context menu, the super function 3757 * returns true and we're done. Otherwise, nothing happened when 3758 * the user clicked. */ 3759 if (super.performLongClick()) { 3760 return true; 3761 } 3762 /* In the case where the application hasn't already handled the long 3763 * click action, look for a word under the click. If one is found, 3764 * animate the text selection into view. 3765 * FIXME: no animation code yet */ 3766 return selectText(); 3767 } 3768 3769 /** 3770 * Select the word at the last click point. 3771 * 3772 * @hide pending API council approval 3773 */ 3774 public boolean selectText() { 3775 int x = viewToContentX((int) mLastTouchX + mScrollX); 3776 int y = viewToContentY((int) mLastTouchY + mScrollY); 3777 setUpSelect(); 3778 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3779 nativeSetExtendSelection(); 3780 mDrawSelectionPointer = false; 3781 mSelectionStarted = true; 3782 mTouchMode = TOUCH_DRAG_MODE; 3783 return true; 3784 } 3785 selectionDone(); 3786 return false; 3787 } 3788 3789 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3790 3791 @Override 3792 protected void onConfigurationChanged(Configuration newConfig) { 3793 if (mSelectingText && mOrientation != newConfig.orientation) { 3794 selectionDone(); 3795 } 3796 mOrientation = newConfig.orientation; 3797 } 3798 3799 /** 3800 * Keep track of the Callback so we can end its ActionMode or remove its 3801 * titlebar. 3802 */ 3803 private SelectActionModeCallback mSelectCallback; 3804 3805 /** 3806 * Check to see if the focused textfield/textarea is still on screen. If it 3807 * is, update the the dimensions and location of WebTextView. Otherwise, 3808 * remove the WebTextView. Should be called when the zoom level changes. 3809 * @param allowIntersect Whether to consider the textfield/textarea on 3810 * screen if it only intersects the screen (as opposed to being 3811 * completely on screen). 3812 * @return boolean True if the textfield/textarea is still on screen and the 3813 * dimensions/location of WebTextView have been updated. 3814 */ 3815 private boolean didUpdateWebTextViewDimensions(boolean allowIntersect) { 3816 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3817 Rect vBox = contentToViewRect(contentBounds); 3818 Rect visibleRect = new Rect(); 3819 calcOurVisibleRect(visibleRect); 3820 // If the textfield is on screen, place the WebTextView in 3821 // its new place, accounting for our new scroll/zoom values, 3822 // and adjust its textsize. 3823 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3824 : visibleRect.contains(vBox)) { 3825 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3826 vBox.height()); 3827 mWebTextView.updateTextSize(); 3828 updateWebTextViewPadding(); 3829 return true; 3830 } else { 3831 // The textfield is now off screen. The user probably 3832 // was not zooming to see the textfield better. Remove 3833 // the WebTextView. If the user types a key, and the 3834 // textfield is still in focus, we will reconstruct 3835 // the WebTextView and scroll it back on screen. 3836 mWebTextView.remove(); 3837 return false; 3838 } 3839 } 3840 3841 void setBaseLayer(int layer, Rect invalRect) { 3842 if (mNativeClass == 0) 3843 return; 3844 if (invalRect == null) { 3845 Rect rect = new Rect(0, 0, mContentWidth, mContentHeight); 3846 nativeSetBaseLayer(layer, rect); 3847 } else { 3848 nativeSetBaseLayer(layer, invalRect); 3849 } 3850 } 3851 3852 private void onZoomAnimationStart() { 3853 // If it is in password mode, turn it off so it does not draw misplaced. 3854 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3855 mWebTextView.setInPassword(false); 3856 } 3857 } 3858 3859 private void onZoomAnimationEnd() { 3860 // adjust the edit text view if needed 3861 if (inEditingMode() && didUpdateWebTextViewDimensions(false) 3862 && nativeFocusCandidateIsPassword()) { 3863 // If it is a password field, start drawing the WebTextView once 3864 // again. 3865 mWebTextView.setInPassword(true); 3866 } 3867 } 3868 3869 void onFixedLengthZoomAnimationStart() { 3870 WebViewCore.pauseUpdatePicture(getWebViewCore()); 3871 onZoomAnimationStart(); 3872 } 3873 3874 void onFixedLengthZoomAnimationEnd() { 3875 if (!mSelectingText) { 3876 WebViewCore.resumeUpdatePicture(mWebViewCore); 3877 } 3878 onZoomAnimationEnd(); 3879 } 3880 3881 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 3882 Paint.DITHER_FLAG | 3883 Paint.SUBPIXEL_TEXT_FLAG; 3884 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 3885 Paint.DITHER_FLAG; 3886 3887 private final DrawFilter mZoomFilter = 3888 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 3889 // If we need to trade better quality for speed, set mScrollFilter to null 3890 private final DrawFilter mScrollFilter = 3891 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 3892 3893 private void drawCoreAndCursorRing(Canvas canvas, int color, 3894 boolean drawCursorRing) { 3895 if (mDrawHistory) { 3896 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3897 canvas.drawPicture(mHistoryPicture); 3898 return; 3899 } 3900 if (mNativeClass == 0) return; 3901 3902 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 3903 boolean animateScroll = ((!mScroller.isFinished() 3904 || mVelocityTracker != null) 3905 && (mTouchMode != TOUCH_DRAG_MODE || 3906 mHeldMotionless != MOTIONLESS_TRUE)) 3907 || mDeferTouchMode == TOUCH_DRAG_MODE; 3908 if (mTouchMode == TOUCH_DRAG_MODE) { 3909 if (mHeldMotionless == MOTIONLESS_PENDING) { 3910 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3911 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3912 mHeldMotionless = MOTIONLESS_FALSE; 3913 } 3914 if (mHeldMotionless == MOTIONLESS_FALSE) { 3915 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3916 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3917 mHeldMotionless = MOTIONLESS_PENDING; 3918 } 3919 } 3920 if (animateZoom) { 3921 mZoomManager.animateZoom(canvas); 3922 } else { 3923 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3924 } 3925 3926 boolean UIAnimationsRunning = false; 3927 // Currently for each draw we compute the animation values; 3928 // We may in the future decide to do that independently. 3929 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3930 UIAnimationsRunning = true; 3931 // If we have unfinished (or unstarted) animations, 3932 // we ask for a repaint. 3933 invalidate(); 3934 } 3935 3936 // decide which adornments to draw 3937 int extras = DRAW_EXTRAS_NONE; 3938 if (mFindIsUp) { 3939 extras = DRAW_EXTRAS_FIND; 3940 } else if (mSelectingText) { 3941 extras = DRAW_EXTRAS_SELECTION; 3942 nativeSetSelectionPointer(mDrawSelectionPointer, 3943 mZoomManager.getInvScale(), 3944 mSelectX, mSelectY - getTitleHeight()); 3945 } else if (drawCursorRing) { 3946 extras = DRAW_EXTRAS_CURSOR_RING; 3947 } 3948 if (DebugFlags.WEB_VIEW) { 3949 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 3950 + " mSelectingText=" + mSelectingText 3951 + " nativePageShouldHandleShiftAndArrows()=" 3952 + nativePageShouldHandleShiftAndArrows() 3953 + " animateZoom=" + animateZoom 3954 + " extras=" + extras); 3955 } 3956 3957 if (canvas.isHardwareAccelerated()) { 3958 try { 3959 if (canvas.acquireContext()) { 3960 Rect rect = new Rect(mGLRectViewport.left, 3961 mGLRectViewport.top, 3962 mGLRectViewport.right, 3963 mGLRectViewport.bottom 3964 - getVisibleTitleHeight()); 3965 if (nativeDrawGL(rect, getScale(), extras)) { 3966 invalidate(); 3967 } 3968 } 3969 } finally { 3970 canvas.releaseContext(); 3971 } 3972 } else { 3973 DrawFilter df = null; 3974 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 3975 df = mZoomFilter; 3976 } else if (animateScroll) { 3977 df = mScrollFilter; 3978 } 3979 canvas.setDrawFilter(df); 3980 int content = nativeDraw(canvas, color, extras, true); 3981 canvas.setDrawFilter(null); 3982 if (content != 0) { 3983 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 3984 } 3985 } 3986 3987 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3988 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3989 mTouchMode = TOUCH_SHORTPRESS_MODE; 3990 } 3991 } 3992 if (mFocusSizeChanged) { 3993 mFocusSizeChanged = false; 3994 // If we are zooming, this will get handled above, when the zoom 3995 // finishes. We also do not need to do this unless the WebTextView 3996 // is showing. 3997 if (!animateZoom && inEditingMode()) { 3998 didUpdateWebTextViewDimensions(true); 3999 } 4000 } 4001 } 4002 4003 // draw history 4004 private boolean mDrawHistory = false; 4005 private Picture mHistoryPicture = null; 4006 private int mHistoryWidth = 0; 4007 private int mHistoryHeight = 0; 4008 4009 // Only check the flag, can be called from WebCore thread 4010 boolean drawHistory() { 4011 return mDrawHistory; 4012 } 4013 4014 int getHistoryPictureWidth() { 4015 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4016 } 4017 4018 // Should only be called in UI thread 4019 void switchOutDrawHistory() { 4020 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4021 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4022 mDrawHistory = false; 4023 mHistoryPicture = null; 4024 invalidate(); 4025 int oldScrollX = mScrollX; 4026 int oldScrollY = mScrollY; 4027 mScrollX = pinLocX(mScrollX); 4028 mScrollY = pinLocY(mScrollY); 4029 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4030 mUserScroll = false; 4031 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 4032 oldScrollY); 4033 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4034 } else { 4035 sendOurVisibleRect(); 4036 } 4037 } 4038 } 4039 4040 WebViewCore.CursorData cursorData() { 4041 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4042 result.mMoveGeneration = nativeMoveGeneration(); 4043 result.mFrame = nativeCursorFramePointer(); 4044 Point position = nativeCursorPosition(); 4045 result.mX = position.x; 4046 result.mY = position.y; 4047 return result; 4048 } 4049 4050 /** 4051 * Delete text from start to end in the focused textfield. If there is no 4052 * focus, or if start == end, silently fail. If start and end are out of 4053 * order, swap them. 4054 * @param start Beginning of selection to delete. 4055 * @param end End of selection to delete. 4056 */ 4057 /* package */ void deleteSelection(int start, int end) { 4058 mTextGeneration++; 4059 WebViewCore.TextSelectionData data 4060 = new WebViewCore.TextSelectionData(start, end); 4061 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4062 data); 4063 } 4064 4065 /** 4066 * Set the selection to (start, end) in the focused textfield. If start and 4067 * end are out of order, swap them. 4068 * @param start Beginning of selection. 4069 * @param end End of selection. 4070 */ 4071 /* package */ void setSelection(int start, int end) { 4072 if (mWebViewCore != null) { 4073 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4074 } 4075 } 4076 4077 @Override 4078 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4079 InputConnection connection = super.onCreateInputConnection(outAttrs); 4080 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4081 return connection; 4082 } 4083 4084 /** 4085 * Called in response to a message from webkit telling us that the soft 4086 * keyboard should be launched. 4087 */ 4088 private void displaySoftKeyboard(boolean isTextView) { 4089 InputMethodManager imm = (InputMethodManager) 4090 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4091 4092 // bring it back to the default level scale so that user can enter text 4093 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4094 if (zoom) { 4095 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4096 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4097 } 4098 if (isTextView) { 4099 rebuildWebTextView(); 4100 if (inEditingMode()) { 4101 imm.showSoftInput(mWebTextView, 0); 4102 if (zoom) { 4103 didUpdateWebTextViewDimensions(true); 4104 } 4105 return; 4106 } 4107 } 4108 // Used by plugins and contentEditable. 4109 // Also used if the navigation cache is out of date, and 4110 // does not recognize that a textfield is in focus. In that 4111 // case, use WebView as the targeted view. 4112 // see http://b/issue?id=2457459 4113 imm.showSoftInput(this, 0); 4114 } 4115 4116 // Called by WebKit to instruct the UI to hide the keyboard 4117 private void hideSoftKeyboard() { 4118 InputMethodManager imm = InputMethodManager.peekInstance(); 4119 if (imm != null && (imm.isActive(this) 4120 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4121 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4122 } 4123 } 4124 4125 /* 4126 * This method checks the current focus and cursor and potentially rebuilds 4127 * mWebTextView to have the appropriate properties, such as password, 4128 * multiline, and what text it contains. It also removes it if necessary. 4129 */ 4130 /* package */ void rebuildWebTextView() { 4131 // If the WebView does not have focus, do nothing until it gains focus. 4132 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4133 return; 4134 } 4135 boolean alreadyThere = inEditingMode(); 4136 // inEditingMode can only return true if mWebTextView is non-null, 4137 // so we can safely call remove() if (alreadyThere) 4138 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4139 if (alreadyThere) { 4140 mWebTextView.remove(); 4141 } 4142 return; 4143 } 4144 // At this point, we know we have found an input field, so go ahead 4145 // and create the WebTextView if necessary. 4146 if (mWebTextView == null) { 4147 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4148 // Initialize our generation number. 4149 mTextGeneration = 0; 4150 } 4151 mWebTextView.updateTextSize(); 4152 Rect visibleRect = new Rect(); 4153 calcOurContentVisibleRect(visibleRect); 4154 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4155 // should be in content coordinates. 4156 Rect bounds = nativeFocusCandidateNodeBounds(); 4157 Rect vBox = contentToViewRect(bounds); 4158 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4159 if (!Rect.intersects(bounds, visibleRect)) { 4160 mWebTextView.bringIntoView(); 4161 } 4162 String text = nativeFocusCandidateText(); 4163 int nodePointer = nativeFocusCandidatePointer(); 4164 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4165 // It is possible that we have the same textfield, but it has moved, 4166 // i.e. In the case of opening/closing the screen. 4167 // In that case, we need to set the dimensions, but not the other 4168 // aspects. 4169 // If the text has been changed by webkit, update it. However, if 4170 // there has been more UI text input, ignore it. We will receive 4171 // another update when that text is recognized. 4172 if (text != null && !text.equals(mWebTextView.getText().toString()) 4173 && nativeTextGeneration() == mTextGeneration) { 4174 mWebTextView.setTextAndKeepSelection(text); 4175 } 4176 } else { 4177 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4178 Gravity.RIGHT : Gravity.NO_GRAVITY); 4179 // This needs to be called before setType, which may call 4180 // requestFormData, and it needs to have the correct nodePointer. 4181 mWebTextView.setNodePointer(nodePointer); 4182 mWebTextView.setType(nativeFocusCandidateType()); 4183 updateWebTextViewPadding(); 4184 if (null == text) { 4185 if (DebugFlags.WEB_VIEW) { 4186 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4187 } 4188 text = ""; 4189 } 4190 mWebTextView.setTextAndKeepSelection(text); 4191 InputMethodManager imm = InputMethodManager.peekInstance(); 4192 if (imm != null && imm.isActive(mWebTextView)) { 4193 imm.restartInput(mWebTextView); 4194 } 4195 } 4196 if (isFocused()) { 4197 mWebTextView.requestFocus(); 4198 } 4199 } 4200 4201 /** 4202 * Update the padding of mWebTextView based on the native textfield/textarea 4203 */ 4204 void updateWebTextViewPadding() { 4205 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4206 if (paddingRect != null) { 4207 // Use contentToViewDimension since these are the dimensions of 4208 // the padding. 4209 mWebTextView.setPadding( 4210 contentToViewDimension(paddingRect.left), 4211 contentToViewDimension(paddingRect.top), 4212 contentToViewDimension(paddingRect.right), 4213 contentToViewDimension(paddingRect.bottom)); 4214 } 4215 } 4216 4217 /** 4218 * Tell webkit to put the cursor on screen. 4219 */ 4220 /* package */ void revealSelection() { 4221 if (mWebViewCore != null) { 4222 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4223 } 4224 } 4225 4226 /** 4227 * Called by WebTextView to find saved form data associated with the 4228 * textfield 4229 * @param name Name of the textfield. 4230 * @param nodePointer Pointer to the node of the textfield, so it can be 4231 * compared to the currently focused textfield when the data is 4232 * retrieved. 4233 * @param autoFillable true if WebKit has determined this field is part of 4234 * a form that can be auto filled. 4235 */ 4236 /* package */ void requestFormData(String name, int nodePointer, boolean autoFillable) { 4237 if (mWebViewCore.getSettings().getSaveFormData()) { 4238 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4239 update.arg1 = nodePointer; 4240 RequestFormData updater = new RequestFormData(name, getUrl(), 4241 update, autoFillable); 4242 Thread t = new Thread(updater); 4243 t.start(); 4244 } 4245 } 4246 4247 /** 4248 * Pass a message to find out the <label> associated with the <input> 4249 * identified by nodePointer 4250 * @param framePointer Pointer to the frame containing the <input> node 4251 * @param nodePointer Pointer to the node for which a <label> is desired. 4252 */ 4253 /* package */ void requestLabel(int framePointer, int nodePointer) { 4254 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4255 nodePointer); 4256 } 4257 4258 /* 4259 * This class requests an Adapter for the WebTextView which shows past 4260 * entries stored in the database. It is a Runnable so that it can be done 4261 * in its own thread, without slowing down the UI. 4262 */ 4263 private class RequestFormData implements Runnable { 4264 private String mName; 4265 private String mUrl; 4266 private Message mUpdateMessage; 4267 private boolean mAutoFillable; 4268 4269 public RequestFormData(String name, String url, Message msg, boolean autoFillable) { 4270 mName = name; 4271 mUrl = url; 4272 mUpdateMessage = msg; 4273 mAutoFillable = autoFillable; 4274 } 4275 4276 public void run() { 4277 ArrayList<String> pastEntries = new ArrayList(); 4278 4279 if (mAutoFillable) { 4280 // Note that code inside the adapter click handler in WebTextView depends 4281 // on the AutoFill item being at the top of the drop down list. If you change 4282 // the order, make sure to do it there too! 4283 WebSettings settings = getSettings(); 4284 if (settings != null && settings.getAutoFillProfile() != null) { 4285 pastEntries.add(getResources().getText( 4286 com.android.internal.R.string.autofill_this_form).toString() + 4287 " " + 4288 mAutoFillData.getPreviewString()); 4289 mWebTextView.setAutoFillProfileIsSet(true); 4290 } else { 4291 // There is no autofill profile set up yet, so add an option that 4292 // will invite the user to set their profile up. 4293 pastEntries.add(getResources().getText( 4294 com.android.internal.R.string.setup_autofill).toString()); 4295 mWebTextView.setAutoFillProfileIsSet(false); 4296 } 4297 } 4298 4299 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4300 4301 if (pastEntries.size() > 0) { 4302 AutoCompleteAdapter adapter = new 4303 AutoCompleteAdapter(mContext, pastEntries); 4304 mUpdateMessage.obj = adapter; 4305 mUpdateMessage.sendToTarget(); 4306 } 4307 } 4308 } 4309 4310 /** 4311 * Dump the display tree to "/sdcard/displayTree.txt" 4312 * 4313 * @hide debug only 4314 */ 4315 public void dumpDisplayTree() { 4316 nativeDumpDisplayTree(getUrl()); 4317 } 4318 4319 /** 4320 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4321 * "/sdcard/domTree.txt" 4322 * 4323 * @hide debug only 4324 */ 4325 public void dumpDomTree(boolean toFile) { 4326 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4327 } 4328 4329 /** 4330 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4331 * to "/sdcard/renderTree.txt" 4332 * 4333 * @hide debug only 4334 */ 4335 public void dumpRenderTree(boolean toFile) { 4336 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4337 } 4338 4339 /** 4340 * Called by DRT on UI thread, need to proxy to WebCore thread. 4341 * 4342 * @hide debug only 4343 */ 4344 public void useMockDeviceOrientation() { 4345 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4346 } 4347 4348 /** 4349 * Called by DRT on WebCore thread. 4350 * 4351 * @hide debug only 4352 */ 4353 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4354 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4355 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4356 canProvideGamma, gamma); 4357 } 4358 4359 /** 4360 * Dump the V8 counters to standard output. 4361 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4362 * true. Otherwise, this will do nothing. 4363 * 4364 * @hide debug only 4365 */ 4366 public void dumpV8Counters() { 4367 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4368 } 4369 4370 // This is used to determine long press with the center key. Does not 4371 // affect long press with the trackball/touch. 4372 private boolean mGotCenterDown = false; 4373 4374 @Override 4375 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4376 // send complex characters to webkit for use by JS and plugins 4377 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4378 // pass the key to DOM 4379 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4380 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4381 // return true as DOM handles the key 4382 return true; 4383 } 4384 return false; 4385 } 4386 4387 @Override 4388 public boolean onKeyDown(int keyCode, KeyEvent event) { 4389 if (DebugFlags.WEB_VIEW) { 4390 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4391 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4392 } 4393 4394 if (mNativeClass == 0) { 4395 return false; 4396 } 4397 4398 // do this hack up front, so it always works, regardless of touch-mode 4399 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4400 mAutoRedraw = !mAutoRedraw; 4401 if (mAutoRedraw) { 4402 invalidate(); 4403 } 4404 return true; 4405 } 4406 4407 // Bubble up the key event if 4408 // 1. it is a system key; or 4409 // 2. the host application wants to handle it; 4410 // 3. the accessibility injector is present and wants to handle it; 4411 if (event.isSystem() 4412 || mCallbackProxy.uiOverrideKeyEvent(event) 4413 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4414 return false; 4415 } 4416 4417 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4418 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4419 if (!pageShouldHandleShiftAndArrows() && !nativeCursorWantsKeyEvents() 4420 && !mSelectingText) { 4421 setUpSelect(); 4422 } 4423 } 4424 4425 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4426 pageUp(false); 4427 return true; 4428 } 4429 4430 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4431 pageDown(false); 4432 return true; 4433 } 4434 4435 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4436 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4437 switchOutDrawHistory(); 4438 if (pageShouldHandleShiftAndArrows()) { 4439 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4440 return true; 4441 } 4442 if (mSelectingText) { 4443 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4444 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4445 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4446 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4447 int multiplier = event.getRepeatCount() + 1; 4448 moveSelection(xRate * multiplier, yRate * multiplier); 4449 return true; 4450 } 4451 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4452 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4453 return true; 4454 } 4455 // Bubble up the key event as WebView doesn't handle it 4456 return false; 4457 } 4458 4459 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4460 switchOutDrawHistory(); 4461 if (event.getRepeatCount() == 0) { 4462 if (mSelectingText) { 4463 return true; // discard press if copy in progress 4464 } 4465 mGotCenterDown = true; 4466 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4467 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4468 // Already checked mNativeClass, so we do not need to check it 4469 // again. 4470 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4471 return true; 4472 } 4473 // Bubble up the key event as WebView doesn't handle it 4474 return false; 4475 } 4476 4477 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 4478 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 4479 // turn off copy select if a shift-key combo is pressed 4480 selectionDone(); 4481 } 4482 4483 if (getSettings().getNavDump()) { 4484 switch (keyCode) { 4485 case KeyEvent.KEYCODE_4: 4486 dumpDisplayTree(); 4487 break; 4488 case KeyEvent.KEYCODE_5: 4489 case KeyEvent.KEYCODE_6: 4490 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4491 break; 4492 case KeyEvent.KEYCODE_7: 4493 case KeyEvent.KEYCODE_8: 4494 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4495 break; 4496 case KeyEvent.KEYCODE_9: 4497 nativeInstrumentReport(); 4498 return true; 4499 } 4500 } 4501 4502 if (nativeCursorIsTextInput()) { 4503 // This message will put the node in focus, for the DOM's notion 4504 // of focus, and make the focuscontroller active 4505 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 4506 nativeCursorNodePointer()); 4507 // This will bring up the WebTextView and put it in focus, for 4508 // our view system's notion of focus 4509 rebuildWebTextView(); 4510 // Now we need to pass the event to it 4511 if (inEditingMode()) { 4512 mWebTextView.setDefaultSelection(); 4513 return mWebTextView.dispatchKeyEvent(event); 4514 } 4515 } else if (nativeHasFocusNode()) { 4516 // In this case, the cursor is not on a text input, but the focus 4517 // might be. Check it, and if so, hand over to the WebTextView. 4518 rebuildWebTextView(); 4519 if (inEditingMode()) { 4520 mWebTextView.setDefaultSelection(); 4521 return mWebTextView.dispatchKeyEvent(event); 4522 } 4523 } 4524 4525 // TODO: should we pass all the keys to DOM or check the meta tag 4526 if (nativeCursorWantsKeyEvents() || true) { 4527 // pass the key to DOM 4528 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4529 // return true as DOM handles the key 4530 return true; 4531 } 4532 4533 // Bubble up the key event as WebView doesn't handle it 4534 return false; 4535 } 4536 4537 @Override 4538 public boolean onKeyUp(int keyCode, KeyEvent event) { 4539 if (DebugFlags.WEB_VIEW) { 4540 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4541 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4542 } 4543 4544 if (mNativeClass == 0) { 4545 return false; 4546 } 4547 4548 // special CALL handling when cursor node's href is "tel:XXX" 4549 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4550 String text = nativeCursorText(); 4551 if (!nativeCursorIsTextInput() && text != null 4552 && text.startsWith(SCHEME_TEL)) { 4553 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4554 getContext().startActivity(intent); 4555 return true; 4556 } 4557 } 4558 4559 // Bubble up the key event if 4560 // 1. it is a system key; or 4561 // 2. the host application wants to handle it; 4562 // 3. the accessibility injector is present and wants to handle it; 4563 if (event.isSystem() 4564 || mCallbackProxy.uiOverrideKeyEvent(event) 4565 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4566 return false; 4567 } 4568 4569 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4570 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4571 if (!pageShouldHandleShiftAndArrows() && copySelection()) { 4572 selectionDone(); 4573 return true; 4574 } 4575 } 4576 4577 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4578 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4579 if (pageShouldHandleShiftAndArrows()) { 4580 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4581 return true; 4582 } 4583 // always handle the navigation keys in the UI thread 4584 // Bubble up the key event as WebView doesn't handle it 4585 return false; 4586 } 4587 4588 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4589 // remove the long press message first 4590 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4591 mGotCenterDown = false; 4592 4593 if (mSelectingText) { 4594 if (mExtendSelection) { 4595 copySelection(); 4596 selectionDone(); 4597 } else { 4598 mExtendSelection = true; 4599 nativeSetExtendSelection(); 4600 invalidate(); // draw the i-beam instead of the arrow 4601 } 4602 return true; // discard press if copy in progress 4603 } 4604 4605 // perform the single click 4606 Rect visibleRect = sendOurVisibleRect(); 4607 // Note that sendOurVisibleRect calls viewToContent, so the 4608 // coordinates should be in content coordinates. 4609 if (!nativeCursorIntersects(visibleRect)) { 4610 return false; 4611 } 4612 WebViewCore.CursorData data = cursorData(); 4613 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4614 playSoundEffect(SoundEffectConstants.CLICK); 4615 if (nativeCursorIsTextInput()) { 4616 rebuildWebTextView(); 4617 centerKeyPressOnTextField(); 4618 if (inEditingMode()) { 4619 mWebTextView.setDefaultSelection(); 4620 } 4621 return true; 4622 } 4623 clearTextEntry(); 4624 nativeShowCursorTimed(); 4625 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4626 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4627 nativeCursorNodePointer()); 4628 } 4629 return true; 4630 } 4631 4632 // TODO: should we pass all the keys to DOM or check the meta tag 4633 if (nativeCursorWantsKeyEvents() || true) { 4634 // pass the key to DOM 4635 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4636 // return true as DOM handles the key 4637 return true; 4638 } 4639 4640 // Bubble up the key event as WebView doesn't handle it 4641 return false; 4642 } 4643 4644 private void setUpSelect() { 4645 if (0 == mNativeClass) return; // client isn't initialized 4646 if (inFullScreenMode()) return; 4647 if (mSelectingText) return; 4648 mExtendSelection = false; 4649 mSelectingText = mDrawSelectionPointer = true; 4650 // don't let the picture change during text selection 4651 WebViewCore.pauseUpdatePicture(mWebViewCore); 4652 nativeResetSelection(); 4653 if (nativeHasCursorNode()) { 4654 Rect rect = nativeCursorNodeBounds(); 4655 mSelectX = contentToViewX(rect.left); 4656 mSelectY = contentToViewY(rect.top); 4657 } else if (mLastTouchY > getVisibleTitleHeight()) { 4658 mSelectX = mScrollX + (int) mLastTouchX; 4659 mSelectY = mScrollY + (int) mLastTouchY; 4660 } else { 4661 mSelectX = mScrollX + getViewWidth() / 2; 4662 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4663 } 4664 nativeHideCursor(); 4665 mSelectCallback = new SelectActionModeCallback(); 4666 mSelectCallback.setWebView(this); 4667 startActionMode(mSelectCallback); 4668 } 4669 4670 /** 4671 * Use this method to put the WebView into text selection mode. 4672 * Do not rely on this functionality; it will be deprecated in the future. 4673 */ 4674 public void emulateShiftHeld() { 4675 setUpSelect(); 4676 } 4677 4678 /** 4679 * Select all of the text in this WebView. 4680 */ 4681 void selectAll() { 4682 if (0 == mNativeClass) return; // client isn't initialized 4683 if (inFullScreenMode()) return; 4684 if (!mSelectingText) setUpSelect(); 4685 nativeSelectAll(); 4686 mDrawSelectionPointer = false; 4687 mExtendSelection = true; 4688 invalidate(); 4689 } 4690 4691 /** 4692 * Called when the selection has been removed. 4693 */ 4694 void selectionDone() { 4695 if (mSelectingText) { 4696 mSelectingText = false; 4697 // finish is idempotent, so this is fine even if selectionDone was 4698 // called by mSelectCallback.onDestroyActionMode 4699 mSelectCallback.finish(); 4700 mSelectCallback = null; 4701 WebViewCore.resumePriority(); 4702 WebViewCore.resumeUpdatePicture(mWebViewCore); 4703 invalidate(); // redraw without selection 4704 mAutoScrollX = 0; 4705 mAutoScrollY = 0; 4706 mSentAutoScrollMessage = false; 4707 } 4708 } 4709 4710 /** 4711 * Copy the selection to the clipboard 4712 */ 4713 boolean copySelection() { 4714 boolean copiedSomething = false; 4715 String selection = getSelection(); 4716 if (selection != "") { 4717 if (DebugFlags.WEB_VIEW) { 4718 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4719 } 4720 Toast.makeText(mContext 4721 , com.android.internal.R.string.text_copied 4722 , Toast.LENGTH_SHORT).show(); 4723 copiedSomething = true; 4724 ClipboardManager cm = (ClipboardManager)getContext() 4725 .getSystemService(Context.CLIPBOARD_SERVICE); 4726 cm.setText(selection); 4727 } 4728 invalidate(); // remove selection region and pointer 4729 return copiedSomething; 4730 } 4731 4732 /** 4733 * Returns the currently highlighted text as a string. 4734 */ 4735 String getSelection() { 4736 if (mNativeClass == 0) return ""; 4737 return nativeGetSelection(); 4738 } 4739 4740 @Override 4741 protected void onAttachedToWindow() { 4742 super.onAttachedToWindow(); 4743 if (hasWindowFocus()) setActive(true); 4744 final ViewTreeObserver treeObserver = getViewTreeObserver(); 4745 if (treeObserver != null) { 4746 if (mGlobalLayoutListener == null) { 4747 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 4748 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 4749 } 4750 if (mScrollChangedListener == null) { 4751 mScrollChangedListener = new InnerScrollChangedListener(); 4752 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 4753 } 4754 } 4755 } 4756 4757 @Override 4758 protected void onDetachedFromWindow() { 4759 clearHelpers(); 4760 mZoomManager.dismissZoomPicker(); 4761 if (hasWindowFocus()) setActive(false); 4762 4763 final ViewTreeObserver treeObserver = getViewTreeObserver(); 4764 if (treeObserver != null) { 4765 if (mGlobalLayoutListener != null) { 4766 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 4767 mGlobalLayoutListener = null; 4768 } 4769 if (mScrollChangedListener != null) { 4770 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 4771 mScrollChangedListener = null; 4772 } 4773 } 4774 4775 super.onDetachedFromWindow(); 4776 } 4777 4778 @Override 4779 protected void onVisibilityChanged(View changedView, int visibility) { 4780 super.onVisibilityChanged(changedView, visibility); 4781 // The zoomManager may be null if the webview is created from XML that 4782 // specifies the view's visibility param as not visible (see http://b/2794841) 4783 if (visibility != View.VISIBLE && mZoomManager != null) { 4784 mZoomManager.dismissZoomPicker(); 4785 } 4786 } 4787 4788 /** 4789 * @deprecated WebView no longer needs to implement 4790 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4791 */ 4792 @Deprecated 4793 public void onChildViewAdded(View parent, View child) {} 4794 4795 /** 4796 * @deprecated WebView no longer needs to implement 4797 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4798 */ 4799 @Deprecated 4800 public void onChildViewRemoved(View p, View child) {} 4801 4802 /** 4803 * @deprecated WebView should not have implemented 4804 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4805 * does nothing now. 4806 */ 4807 @Deprecated 4808 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4809 } 4810 4811 private void setActive(boolean active) { 4812 if (active) { 4813 if (hasFocus()) { 4814 // If our window regained focus, and we have focus, then begin 4815 // drawing the cursor ring 4816 mDrawCursorRing = true; 4817 setFocusControllerActive(true); 4818 if (mNativeClass != 0) { 4819 nativeRecordButtons(true, false, true); 4820 } 4821 } else { 4822 if (!inEditingMode()) { 4823 // If our window gained focus, but we do not have it, do not 4824 // draw the cursor ring. 4825 mDrawCursorRing = false; 4826 setFocusControllerActive(false); 4827 } 4828 // We do not call nativeRecordButtons here because we assume 4829 // that when we lost focus, or window focus, it got called with 4830 // false for the first parameter 4831 } 4832 } else { 4833 if (!mZoomManager.isZoomPickerVisible()) { 4834 /* 4835 * The external zoom controls come in their own window, so our 4836 * window loses focus. Our policy is to not draw the cursor ring 4837 * if our window is not focused, but this is an exception since 4838 * the user can still navigate the web page with the zoom 4839 * controls showing. 4840 */ 4841 mDrawCursorRing = false; 4842 } 4843 mGotKeyDown = false; 4844 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4845 mTouchMode = TOUCH_DONE_MODE; 4846 if (mNativeClass != 0) { 4847 nativeRecordButtons(false, false, true); 4848 } 4849 setFocusControllerActive(false); 4850 } 4851 invalidate(); 4852 } 4853 4854 // To avoid drawing the cursor ring, and remove the TextView when our window 4855 // loses focus. 4856 @Override 4857 public void onWindowFocusChanged(boolean hasWindowFocus) { 4858 setActive(hasWindowFocus); 4859 if (hasWindowFocus) { 4860 JWebCoreJavaBridge.setActiveWebView(this); 4861 } else { 4862 JWebCoreJavaBridge.removeActiveWebView(this); 4863 } 4864 super.onWindowFocusChanged(hasWindowFocus); 4865 } 4866 4867 /* 4868 * Pass a message to WebCore Thread, telling the WebCore::Page's 4869 * FocusController to be "inactive" so that it will 4870 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4871 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4872 */ 4873 /* package */ void setFocusControllerActive(boolean active) { 4874 if (mWebViewCore == null) return; 4875 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 4876 // Need to send this message after the document regains focus. 4877 if (active && mListBoxMessage != null) { 4878 mWebViewCore.sendMessage(mListBoxMessage); 4879 mListBoxMessage = null; 4880 } 4881 } 4882 4883 @Override 4884 protected void onFocusChanged(boolean focused, int direction, 4885 Rect previouslyFocusedRect) { 4886 if (DebugFlags.WEB_VIEW) { 4887 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4888 } 4889 if (focused) { 4890 // When we regain focus, if we have window focus, resume drawing 4891 // the cursor ring 4892 if (hasWindowFocus()) { 4893 mDrawCursorRing = true; 4894 if (mNativeClass != 0) { 4895 nativeRecordButtons(true, false, true); 4896 } 4897 setFocusControllerActive(true); 4898 //} else { 4899 // The WebView has gained focus while we do not have 4900 // windowfocus. When our window lost focus, we should have 4901 // called nativeRecordButtons(false...) 4902 } 4903 } else { 4904 // When we lost focus, unless focus went to the TextView (which is 4905 // true if we are in editing mode), stop drawing the cursor ring. 4906 if (!inEditingMode()) { 4907 mDrawCursorRing = false; 4908 if (mNativeClass != 0) { 4909 nativeRecordButtons(false, false, true); 4910 } 4911 setFocusControllerActive(false); 4912 } 4913 mGotKeyDown = false; 4914 } 4915 4916 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4917 } 4918 4919 void setGLRectViewport() { 4920 // Use the getGlobalVisibleRect() to get the intersection among the parents 4921 Rect webViewRect = new Rect(); 4922 boolean visible = getGlobalVisibleRect(webViewRect); 4923 4924 // Then need to invert the Y axis, just for GL 4925 View rootView = getRootView(); 4926 int rootViewHeight = rootView.getHeight(); 4927 int savedWebViewBottom = webViewRect.bottom; 4928 webViewRect.bottom = rootViewHeight - webViewRect.top; 4929 webViewRect.top = rootViewHeight - savedWebViewBottom; 4930 4931 // Store the viewport 4932 mGLRectViewport = webViewRect; 4933 } 4934 4935 /** 4936 * @hide 4937 */ 4938 @Override 4939 protected boolean setFrame(int left, int top, int right, int bottom) { 4940 boolean changed = super.setFrame(left, top, right, bottom); 4941 if (!changed && mHeightCanMeasure) { 4942 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4943 // in WebViewCore after we get the first layout. We do call 4944 // requestLayout() when we get contentSizeChanged(). But the View 4945 // system won't call onSizeChanged if the dimension is not changed. 4946 // In this case, we need to call sendViewSizeZoom() explicitly to 4947 // notify the WebKit about the new dimensions. 4948 sendViewSizeZoom(false); 4949 } 4950 setGLRectViewport(); 4951 return changed; 4952 } 4953 4954 @Override 4955 protected void onSizeChanged(int w, int h, int ow, int oh) { 4956 super.onSizeChanged(w, h, ow, oh); 4957 4958 // adjust the max viewport width depending on the view dimensions. This 4959 // is to ensure the scaling is not going insane. So do not shrink it if 4960 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4961 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 4962 if (newMaxViewportWidth > sMaxViewportWidth) { 4963 sMaxViewportWidth = newMaxViewportWidth; 4964 } 4965 4966 mZoomManager.onSizeChanged(w, h, ow, oh); 4967 } 4968 4969 @Override 4970 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4971 super.onScrollChanged(l, t, oldl, oldt); 4972 if (!mInOverScrollMode) { 4973 sendOurVisibleRect(); 4974 // update WebKit if visible title bar height changed. The logic is same 4975 // as getVisibleTitleHeight. 4976 int titleHeight = getTitleHeight(); 4977 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4978 sendViewSizeZoom(false); 4979 } 4980 } 4981 } 4982 4983 @Override 4984 public boolean dispatchKeyEvent(KeyEvent event) { 4985 boolean dispatch = true; 4986 4987 // Textfields, plugins, and contentEditable nodes need to receive the 4988 // shift up key even if another key was released while the shift key 4989 // was held down. 4990 if (!inEditingMode() && (mNativeClass == 0 4991 || !nativePageShouldHandleShiftAndArrows())) { 4992 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4993 mGotKeyDown = true; 4994 } else { 4995 if (!mGotKeyDown) { 4996 /* 4997 * We got a key up for which we were not the recipient of 4998 * the original key down. Don't give it to the view. 4999 */ 5000 dispatch = false; 5001 } 5002 mGotKeyDown = false; 5003 } 5004 } 5005 5006 if (dispatch) { 5007 return super.dispatchKeyEvent(event); 5008 } else { 5009 // We didn't dispatch, so let something else handle the key 5010 return false; 5011 } 5012 } 5013 5014 // Here are the snap align logic: 5015 // 1. If it starts nearly horizontally or vertically, snap align; 5016 // 2. If there is a dramitic direction change, let it go; 5017 // 3. If there is a same direction back and forth, lock it. 5018 5019 // adjustable parameters 5020 private int mMinLockSnapReverseDistance; 5021 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5022 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5023 5024 private boolean hitFocusedPlugin(int contentX, int contentY) { 5025 if (DebugFlags.WEB_VIEW) { 5026 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5027 Rect r = nativeFocusNodeBounds(); 5028 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5029 + ", " + r.right + ", " + r.bottom + ")"); 5030 } 5031 return nativeFocusIsPlugin() 5032 && nativeFocusNodeBounds().contains(contentX, contentY); 5033 } 5034 5035 private boolean shouldForwardTouchEvent() { 5036 return mFullScreenHolder != null || (mForwardTouchEvents 5037 && !mSelectingText 5038 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 5039 } 5040 5041 private boolean inFullScreenMode() { 5042 return mFullScreenHolder != null; 5043 } 5044 5045 private void dismissFullScreenMode() { 5046 if (inFullScreenMode()) { 5047 mFullScreenHolder.dismiss(); 5048 mFullScreenHolder = null; 5049 } 5050 } 5051 5052 void onPinchToZoomAnimationStart() { 5053 // cancel the single touch handling 5054 cancelTouch(); 5055 onZoomAnimationStart(); 5056 } 5057 5058 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5059 onZoomAnimationEnd(); 5060 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5061 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5062 // as it may trigger the unwanted fling. 5063 mTouchMode = TOUCH_PINCH_DRAG; 5064 mConfirmMove = true; 5065 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5066 } 5067 5068 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5069 // layer is found. 5070 private void startScrollingLayer(float x, float y) { 5071 int contentX = viewToContentX((int) x + mScrollX); 5072 int contentY = viewToContentY((int) y + mScrollY); 5073 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5074 mScrollingLayerRect); 5075 if (mScrollingLayer != 0) { 5076 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5077 } 5078 } 5079 5080 // 1/(density * density) used to compute the distance between points. 5081 // Computed in init(). 5082 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5083 5084 // The distance between two points reported in onTouchEvent scaled by the 5085 // density of the screen. 5086 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5087 5088 @Override 5089 public boolean onTouchEvent(MotionEvent ev) { 5090 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5091 return false; 5092 } 5093 5094 if (DebugFlags.WEB_VIEW) { 5095 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5096 + " mTouchMode=" + mTouchMode 5097 + " numPointers=" + ev.getPointerCount()); 5098 } 5099 5100 int action = ev.getAction(); 5101 float x = ev.getX(); 5102 float y = ev.getY(); 5103 long eventTime = ev.getEventTime(); 5104 5105 // mDeferMultitouch is a hack for layout tests, where it is used to 5106 // force passing multi-touch events to webkit. 5107 // FIXME: always pass multi-touch events to webkit and remove everything 5108 // related to mDeferMultitouch. 5109 if (ev.getPointerCount() > 1 && 5110 (mDeferMultitouch || mZoomManager.isZoomScaleFixed())) { 5111 if (DebugFlags.WEB_VIEW) { 5112 Log.v(LOGTAG, "passing " + ev.getPointerCount() + " points to webkit"); 5113 } 5114 passMultiTouchToWebKit(ev); 5115 return true; 5116 } 5117 5118 final ScaleGestureDetector detector = 5119 mZoomManager.getMultiTouchGestureDetector(); 5120 5121 if (mZoomManager.supportsMultiTouchZoom() && ev.getPointerCount() > 1) { 5122 if (!detector.isInProgress() && 5123 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 5124 // Insert a fake pointer down event in order to start 5125 // the zoom scale detector. 5126 MotionEvent temp = MotionEvent.obtain(ev); 5127 // Clear the original event and set it to 5128 // ACTION_POINTER_DOWN. 5129 try { 5130 temp.setAction(temp.getAction() & 5131 ~MotionEvent.ACTION_MASK | 5132 MotionEvent.ACTION_POINTER_DOWN); 5133 detector.onTouchEvent(temp); 5134 } finally { 5135 temp.recycle(); 5136 } 5137 } 5138 5139 detector.onTouchEvent(ev); 5140 5141 if (detector.isInProgress()) { 5142 mLastTouchTime = eventTime; 5143 cancelLongPress(); 5144 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5145 if (!mZoomManager.supportsPanDuringZoom()) { 5146 return true; 5147 } 5148 mTouchMode = TOUCH_DRAG_MODE; 5149 if (mVelocityTracker == null) { 5150 mVelocityTracker = VelocityTracker.obtain(); 5151 } 5152 } 5153 5154 x = detector.getFocusX(); 5155 y = detector.getFocusY(); 5156 action = ev.getAction() & MotionEvent.ACTION_MASK; 5157 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5158 cancelTouch(); 5159 action = MotionEvent.ACTION_DOWN; 5160 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5161 // set mLastTouchX/Y to the remaining point 5162 mLastTouchX = x; 5163 mLastTouchY = y; 5164 } else if (action == MotionEvent.ACTION_MOVE) { 5165 // negative x or y indicate it is on the edge, skip it. 5166 if (x < 0 || y < 0) { 5167 return true; 5168 } 5169 } 5170 } 5171 5172 // Due to the touch screen edge effect, a touch closer to the edge 5173 // always snapped to the edge. As getViewWidth() can be different from 5174 // getWidth() due to the scrollbar, adjusting the point to match 5175 // getViewWidth(). Same applied to the height. 5176 x = Math.min(x, getViewWidth() - 1); 5177 y = Math.min(y, getViewHeightWithTitle() - 1); 5178 5179 float fDeltaX = mLastTouchX - x; 5180 float fDeltaY = mLastTouchY - y; 5181 int deltaX = (int) fDeltaX; 5182 int deltaY = (int) fDeltaY; 5183 int contentX = viewToContentX((int) x + mScrollX); 5184 int contentY = viewToContentY((int) y + mScrollY); 5185 5186 switch (action) { 5187 case MotionEvent.ACTION_DOWN: { 5188 mPreventDefault = PREVENT_DEFAULT_NO; 5189 mConfirmMove = false; 5190 mInitialHitTestResult = null; 5191 if (!mScroller.isFinished()) { 5192 // stop the current scroll animation, but if this is 5193 // the start of a fling, allow it to add to the current 5194 // fling's velocity 5195 mScroller.abortAnimation(); 5196 mTouchMode = TOUCH_DRAG_START_MODE; 5197 mConfirmMove = true; 5198 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5199 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5200 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5201 if (getSettings().supportTouchOnly()) { 5202 removeTouchHighlight(true); 5203 } 5204 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5205 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5206 } else { 5207 // commit the short press action for the previous tap 5208 doShortPress(); 5209 mTouchMode = TOUCH_INIT_MODE; 5210 mDeferTouchProcess = (!inFullScreenMode() 5211 && mForwardTouchEvents) ? hitFocusedPlugin( 5212 contentX, contentY) : false; 5213 } 5214 } else { // the normal case 5215 mTouchMode = TOUCH_INIT_MODE; 5216 mDeferTouchProcess = (!inFullScreenMode() 5217 && mForwardTouchEvents) ? hitFocusedPlugin( 5218 contentX, contentY) : false; 5219 mWebViewCore.sendMessage( 5220 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5221 if (getSettings().supportTouchOnly()) { 5222 TouchHighlightData data = new TouchHighlightData(); 5223 data.mX = contentX; 5224 data.mY = contentY; 5225 data.mSlop = viewToContentDimension(mNavSlop); 5226 mWebViewCore.sendMessageDelayed( 5227 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5228 ViewConfiguration.getTapTimeout()); 5229 if (DEBUG_TOUCH_HIGHLIGHT) { 5230 if (getSettings().getNavDump()) { 5231 mTouchHighlightX = (int) x + mScrollX; 5232 mTouchHighlightY = (int) y + mScrollY; 5233 mPrivateHandler.postDelayed(new Runnable() { 5234 public void run() { 5235 mTouchHighlightX = mTouchHighlightY = 0; 5236 invalidate(); 5237 } 5238 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5239 } 5240 } 5241 } 5242 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5243 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5244 (eventTime - mLastTouchUpTime), eventTime); 5245 } 5246 if (mSelectingText) { 5247 mDrawSelectionPointer = false; 5248 mSelectionStarted = nativeStartSelection(contentX, contentY); 5249 if (DebugFlags.WEB_VIEW) { 5250 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5251 } 5252 invalidate(); 5253 } 5254 } 5255 // Trigger the link 5256 if (mTouchMode == TOUCH_INIT_MODE 5257 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5258 mPrivateHandler.sendEmptyMessageDelayed( 5259 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5260 mPrivateHandler.sendEmptyMessageDelayed( 5261 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5262 if (inFullScreenMode() || mDeferTouchProcess) { 5263 mPreventDefault = PREVENT_DEFAULT_YES; 5264 } else if (mForwardTouchEvents) { 5265 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5266 } else { 5267 mPreventDefault = PREVENT_DEFAULT_NO; 5268 } 5269 // pass the touch events from UI thread to WebCore thread 5270 if (shouldForwardTouchEvent()) { 5271 TouchEventData ted = new TouchEventData(); 5272 ted.mAction = action; 5273 ted.mPoints = new Point[1]; 5274 ted.mPoints[0] = new Point(contentX, contentY); 5275 ted.mMetaState = ev.getMetaState(); 5276 ted.mReprocess = mDeferTouchProcess; 5277 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5278 if (mDeferTouchProcess) { 5279 // still needs to set them for compute deltaX/Y 5280 mLastTouchX = x; 5281 mLastTouchY = y; 5282 break; 5283 } 5284 if (!inFullScreenMode()) { 5285 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5286 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5287 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5288 action, 0), TAP_TIMEOUT); 5289 } 5290 } 5291 } 5292 startTouch(x, y, eventTime); 5293 break; 5294 } 5295 case MotionEvent.ACTION_MOVE: { 5296 boolean firstMove = false; 5297 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5298 >= mTouchSlopSquare) { 5299 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5300 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5301 mConfirmMove = true; 5302 firstMove = true; 5303 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5304 mTouchMode = TOUCH_INIT_MODE; 5305 } 5306 if (getSettings().supportTouchOnly()) { 5307 removeTouchHighlight(true); 5308 } 5309 } 5310 // pass the touch events from UI thread to WebCore thread 5311 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5312 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5313 TouchEventData ted = new TouchEventData(); 5314 ted.mAction = action; 5315 ted.mPoints = new Point[1]; 5316 ted.mPoints[0] = new Point(contentX, contentY); 5317 ted.mMetaState = ev.getMetaState(); 5318 ted.mReprocess = mDeferTouchProcess; 5319 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5320 mLastSentTouchTime = eventTime; 5321 if (mDeferTouchProcess) { 5322 break; 5323 } 5324 if (firstMove && !inFullScreenMode()) { 5325 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5326 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5327 action, 0), TAP_TIMEOUT); 5328 } 5329 } 5330 if (mTouchMode == TOUCH_DONE_MODE 5331 || mPreventDefault == PREVENT_DEFAULT_YES) { 5332 // no dragging during scroll zoom animation, or when prevent 5333 // default is yes 5334 break; 5335 } 5336 if (mVelocityTracker == null) { 5337 Log.e(LOGTAG, "Got null mVelocityTracker when " 5338 + "mPreventDefault = " + mPreventDefault 5339 + " mDeferTouchProcess = " + mDeferTouchProcess 5340 + " mTouchMode = " + mTouchMode); 5341 } 5342 mVelocityTracker.addMovement(ev); 5343 if (mSelectingText && mSelectionStarted) { 5344 if (DebugFlags.WEB_VIEW) { 5345 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5346 } 5347 ViewParent parent = getParent(); 5348 if (parent != null) { 5349 parent.requestDisallowInterceptTouchEvent(true); 5350 } 5351 int layer = nativeScrollableLayer(contentX, contentY, mScrollingLayerRect); 5352 if (layer == 0) { 5353 mAutoScrollX = x <= SELECT_SCROLL ? -SELECT_SCROLL 5354 : x >= getViewWidth() - SELECT_SCROLL 5355 ? SELECT_SCROLL : 0; 5356 mAutoScrollY = y <= SELECT_SCROLL ? -SELECT_SCROLL 5357 : y >= getViewHeightWithTitle() - SELECT_SCROLL 5358 ? SELECT_SCROLL : 0; 5359 if (!mSentAutoScrollMessage) { 5360 mSentAutoScrollMessage = true; 5361 mPrivateHandler.sendEmptyMessageDelayed( 5362 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5363 } 5364 } else { 5365 // TODO: allow scrollable overflow div to autoscroll 5366 } 5367 nativeExtendSelection(contentX, contentY); 5368 invalidate(); 5369 break; 5370 } 5371 5372 if (mTouchMode != TOUCH_DRAG_MODE && 5373 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5374 5375 if (!mConfirmMove) { 5376 break; 5377 } 5378 5379 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5380 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5381 // track mLastTouchTime as we may need to do fling at 5382 // ACTION_UP 5383 mLastTouchTime = eventTime; 5384 break; 5385 } 5386 5387 // Only lock dragging to one axis if we don't have a scale in progress. 5388 // Scaling implies free-roaming movement. Note this is only ever a question 5389 // if mZoomManager.supportsPanDuringZoom() is true. 5390 if (detector != null && !detector.isInProgress()) { 5391 // if it starts nearly horizontal or vertical, enforce it 5392 int ax = Math.abs(deltaX); 5393 int ay = Math.abs(deltaY); 5394 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5395 mSnapScrollMode = SNAP_X; 5396 mSnapPositive = deltaX > 0; 5397 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5398 mSnapScrollMode = SNAP_Y; 5399 mSnapPositive = deltaY > 0; 5400 } 5401 } 5402 5403 mTouchMode = TOUCH_DRAG_MODE; 5404 mLastTouchX = x; 5405 mLastTouchY = y; 5406 fDeltaX = 0.0f; 5407 fDeltaY = 0.0f; 5408 deltaX = 0; 5409 deltaY = 0; 5410 5411 startScrollingLayer(x, y); 5412 startDrag(); 5413 } 5414 5415 // do pan 5416 boolean done = false; 5417 boolean keepScrollBarsVisible = false; 5418 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 5419 mLastTouchX = x; 5420 mLastTouchY = y; 5421 keepScrollBarsVisible = done = true; 5422 } else { 5423 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5424 int ax = Math.abs(deltaX); 5425 int ay = Math.abs(deltaY); 5426 if (mSnapScrollMode == SNAP_X) { 5427 // radical change means getting out of snap mode 5428 if (ay > MAX_SLOPE_FOR_DIAG * ax 5429 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5430 mSnapScrollMode = SNAP_NONE; 5431 } 5432 // reverse direction means lock in the snap mode 5433 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5434 (mSnapPositive 5435 ? deltaX < -mMinLockSnapReverseDistance 5436 : deltaX > mMinLockSnapReverseDistance)) { 5437 mSnapScrollMode |= SNAP_LOCK; 5438 } 5439 } else { 5440 // radical change means getting out of snap mode 5441 if (ax > MAX_SLOPE_FOR_DIAG * ay 5442 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5443 mSnapScrollMode = SNAP_NONE; 5444 } 5445 // reverse direction means lock in the snap mode 5446 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5447 (mSnapPositive 5448 ? deltaY < -mMinLockSnapReverseDistance 5449 : deltaY > mMinLockSnapReverseDistance)) { 5450 mSnapScrollMode |= SNAP_LOCK; 5451 } 5452 } 5453 } 5454 if (mSnapScrollMode != SNAP_NONE) { 5455 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5456 deltaY = 0; 5457 } else { 5458 deltaX = 0; 5459 } 5460 } 5461 if ((deltaX | deltaY) != 0) { 5462 if (deltaX != 0) { 5463 mLastTouchX = x; 5464 } 5465 if (deltaY != 0) { 5466 mLastTouchY = y; 5467 } 5468 mHeldMotionless = MOTIONLESS_FALSE; 5469 } else { 5470 // keep the scrollbar on the screen even there is no 5471 // scroll 5472 mLastTouchX = x; 5473 mLastTouchY = y; 5474 keepScrollBarsVisible = true; 5475 } 5476 mLastTouchTime = eventTime; 5477 mUserScroll = true; 5478 } 5479 5480 doDrag(deltaX, deltaY); 5481 5482 // Turn off scrollbars when dragging a layer. 5483 if (keepScrollBarsVisible && 5484 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5485 if (mHeldMotionless != MOTIONLESS_TRUE) { 5486 mHeldMotionless = MOTIONLESS_TRUE; 5487 invalidate(); 5488 } 5489 // keep the scrollbar on the screen even there is no scroll 5490 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5491 false); 5492 // return false to indicate that we can't pan out of the 5493 // view space 5494 return !done; 5495 } 5496 break; 5497 } 5498 case MotionEvent.ACTION_UP: { 5499 if (!isFocused()) requestFocus(); 5500 // pass the touch events from UI thread to WebCore thread 5501 if (shouldForwardTouchEvent()) { 5502 TouchEventData ted = new TouchEventData(); 5503 ted.mAction = action; 5504 ted.mPoints = new Point[1]; 5505 ted.mPoints[0] = new Point(contentX, contentY); 5506 ted.mMetaState = ev.getMetaState(); 5507 ted.mReprocess = mDeferTouchProcess; 5508 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5509 } 5510 mLastTouchUpTime = eventTime; 5511 switch (mTouchMode) { 5512 case TOUCH_DOUBLE_TAP_MODE: // double tap 5513 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5514 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5515 if (inFullScreenMode() || mDeferTouchProcess) { 5516 TouchEventData ted = new TouchEventData(); 5517 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5518 ted.mPoints = new Point[1]; 5519 ted.mPoints[0] = new Point(contentX, contentY); 5520 ted.mMetaState = ev.getMetaState(); 5521 ted.mReprocess = mDeferTouchProcess; 5522 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5523 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5524 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5525 mTouchMode = TOUCH_DONE_MODE; 5526 } 5527 break; 5528 case TOUCH_INIT_MODE: // tap 5529 case TOUCH_SHORTPRESS_START_MODE: 5530 case TOUCH_SHORTPRESS_MODE: 5531 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5532 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5533 if (mConfirmMove) { 5534 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5535 " WebCore's response for touch down."); 5536 if (mPreventDefault != PREVENT_DEFAULT_YES 5537 && (computeMaxScrollX() > 0 5538 || computeMaxScrollY() > 0)) { 5539 // If the user has performed a very quick touch 5540 // sequence it is possible that we may get here 5541 // before WebCore has had a chance to process the events. 5542 // In this case, any call to preventDefault in the 5543 // JS touch handler will not have been executed yet. 5544 // Hence we will see both the UI (now) and WebCore 5545 // (when context switches) handling the event, 5546 // regardless of whether the web developer actually 5547 // doeses preventDefault in their touch handler. This 5548 // is the nature of our asynchronous touch model. 5549 5550 // we will not rewrite drag code here, but we 5551 // will try fling if it applies. 5552 WebViewCore.reducePriority(); 5553 // to get better performance, pause updating the 5554 // picture 5555 WebViewCore.pauseUpdatePicture(mWebViewCore); 5556 // fall through to TOUCH_DRAG_MODE 5557 } else { 5558 // WebKit may consume the touch event and modify 5559 // DOM. drawContentPicture() will be called with 5560 // animateSroll as true for better performance. 5561 // Force redraw in high-quality. 5562 invalidate(); 5563 break; 5564 } 5565 } else { 5566 if (mSelectingText) { 5567 // tapping on selection or controls does nothing 5568 if (!nativeHitSelection(contentX, contentY)) { 5569 selectionDone(); 5570 } 5571 break; 5572 } 5573 // only trigger double tap if the WebView is 5574 // scalable 5575 if (mTouchMode == TOUCH_INIT_MODE 5576 && (canZoomIn() || canZoomOut())) { 5577 mPrivateHandler.sendEmptyMessageDelayed( 5578 RELEASE_SINGLE_TAP, ViewConfiguration 5579 .getDoubleTapTimeout()); 5580 } else { 5581 doShortPress(); 5582 } 5583 break; 5584 } 5585 case TOUCH_DRAG_MODE: 5586 case TOUCH_DRAG_LAYER_MODE: 5587 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5588 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5589 // if the user waits a while w/o moving before the 5590 // up, we don't want to do a fling 5591 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5592 if (mVelocityTracker == null) { 5593 Log.e(LOGTAG, "Got null mVelocityTracker when " 5594 + "mPreventDefault = " 5595 + mPreventDefault 5596 + " mDeferTouchProcess = " 5597 + mDeferTouchProcess); 5598 } 5599 mVelocityTracker.addMovement(ev); 5600 // set to MOTIONLESS_IGNORE so that it won't keep 5601 // removing and sending message in 5602 // drawCoreAndCursorRing() 5603 mHeldMotionless = MOTIONLESS_IGNORE; 5604 doFling(); 5605 break; 5606 } else { 5607 if (mScroller.springBack(mScrollX, mScrollY, 0, 5608 computeMaxScrollX(), 0, 5609 computeMaxScrollY())) { 5610 invalidate(); 5611 } 5612 } 5613 // redraw in high-quality, as we're done dragging 5614 mHeldMotionless = MOTIONLESS_TRUE; 5615 invalidate(); 5616 // fall through 5617 case TOUCH_DRAG_START_MODE: 5618 // TOUCH_DRAG_START_MODE should not happen for the real 5619 // device as we almost certain will get a MOVE. But this 5620 // is possible on emulator. 5621 mLastVelocity = 0; 5622 WebViewCore.resumePriority(); 5623 if (!mSelectingText) { 5624 WebViewCore.resumeUpdatePicture(mWebViewCore); 5625 } 5626 break; 5627 } 5628 stopTouch(); 5629 break; 5630 } 5631 case MotionEvent.ACTION_CANCEL: { 5632 if (mTouchMode == TOUCH_DRAG_MODE) { 5633 mScroller.springBack(mScrollX, mScrollY, 0, 5634 computeMaxScrollX(), 0, computeMaxScrollY()); 5635 invalidate(); 5636 } 5637 cancelWebCoreTouchEvent(contentX, contentY, false); 5638 cancelTouch(); 5639 break; 5640 } 5641 } 5642 return true; 5643 } 5644 5645 private void passMultiTouchToWebKit(MotionEvent ev) { 5646 TouchEventData ted = new TouchEventData(); 5647 ted.mAction = ev.getAction() & MotionEvent.ACTION_MASK; 5648 final int count = ev.getPointerCount(); 5649 ted.mPoints = new Point[count]; 5650 for (int c = 0; c < count; c++) { 5651 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5652 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5653 ted.mPoints[c] = new Point(x, y); 5654 } 5655 ted.mMetaState = ev.getMetaState(); 5656 ted.mReprocess = mDeferTouchProcess; 5657 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5658 cancelLongPress(); 5659 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5660 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5661 } 5662 5663 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5664 if (shouldForwardTouchEvent()) { 5665 if (removeEvents) { 5666 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5667 } 5668 TouchEventData ted = new TouchEventData(); 5669 ted.mPoints = new Point[1]; 5670 ted.mPoints[0] = new Point(x, y); 5671 ted.mAction = MotionEvent.ACTION_CANCEL; 5672 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5673 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5674 } 5675 } 5676 5677 private void startTouch(float x, float y, long eventTime) { 5678 // Remember where the motion event started 5679 mLastTouchX = x; 5680 mLastTouchY = y; 5681 mLastTouchTime = eventTime; 5682 mVelocityTracker = VelocityTracker.obtain(); 5683 mSnapScrollMode = SNAP_NONE; 5684 } 5685 5686 private void startDrag() { 5687 WebViewCore.reducePriority(); 5688 // to get better performance, pause updating the picture 5689 WebViewCore.pauseUpdatePicture(mWebViewCore); 5690 if (!mDragFromTextInput) { 5691 nativeHideCursor(); 5692 } 5693 5694 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5695 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 5696 mZoomManager.invokeZoomPicker(); 5697 } 5698 } 5699 5700 private void doDrag(int deltaX, int deltaY) { 5701 if ((deltaX | deltaY) != 0) { 5702 int oldX = mScrollX; 5703 int oldY = mScrollY; 5704 int rangeX = computeMaxScrollX(); 5705 int rangeY = computeMaxScrollY(); 5706 int overscrollDistance = mOverscrollDistance; 5707 5708 // Check for the original scrolling layer in case we change 5709 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 5710 // reached the edge of a layer but mScrollingLayer will be non-zero 5711 // if we initiated the drag on a layer. 5712 if (mScrollingLayer != 0) { 5713 final int contentX = viewToContentDimension(deltaX); 5714 final int contentY = viewToContentDimension(deltaY); 5715 5716 // Check the scrolling bounds to see if we will actually do any 5717 // scrolling. The rectangle is in document coordinates. 5718 final int maxX = mScrollingLayerRect.right; 5719 final int maxY = mScrollingLayerRect.bottom; 5720 final int resultX = Math.max(0, 5721 Math.min(mScrollingLayerRect.left + contentX, maxX)); 5722 final int resultY = Math.max(0, 5723 Math.min(mScrollingLayerRect.top + contentY, maxY)); 5724 5725 if (resultX != mScrollingLayerRect.left || 5726 resultY != mScrollingLayerRect.top) { 5727 // In case we switched to dragging the page. 5728 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5729 deltaX = contentX; 5730 deltaY = contentY; 5731 oldX = mScrollingLayerRect.left; 5732 oldY = mScrollingLayerRect.top; 5733 rangeX = maxX; 5734 rangeY = maxY; 5735 } else { 5736 // Scroll the main page if we are not going to scroll the 5737 // layer. This does not reset mScrollingLayer in case the 5738 // user changes directions and the layer can scroll the 5739 // other way. 5740 mTouchMode = TOUCH_DRAG_MODE; 5741 } 5742 } 5743 5744 if (mOverScrollGlow != null) { 5745 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 5746 } 5747 5748 overScrollBy(deltaX, deltaY, oldX, oldY, 5749 rangeX, rangeY, 5750 mOverscrollDistance, mOverscrollDistance, true); 5751 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 5752 invalidate(); 5753 } 5754 } 5755 mZoomManager.keepZoomPickerVisible(); 5756 } 5757 5758 private void stopTouch() { 5759 // we also use mVelocityTracker == null to tell us that we are 5760 // not "moving around", so we can take the slower/prettier 5761 // mode in the drawing code 5762 if (mVelocityTracker != null) { 5763 mVelocityTracker.recycle(); 5764 mVelocityTracker = null; 5765 } 5766 5767 // Release any pulled glows 5768 if (mOverScrollGlow != null) { 5769 mOverScrollGlow.releaseAll(); 5770 } 5771 } 5772 5773 private void cancelTouch() { 5774 // we also use mVelocityTracker == null to tell us that we are 5775 // not "moving around", so we can take the slower/prettier 5776 // mode in the drawing code 5777 if (mVelocityTracker != null) { 5778 mVelocityTracker.recycle(); 5779 mVelocityTracker = null; 5780 } 5781 5782 if ((mTouchMode == TOUCH_DRAG_MODE 5783 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 5784 WebViewCore.resumePriority(); 5785 WebViewCore.resumeUpdatePicture(mWebViewCore); 5786 } 5787 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5788 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5789 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5790 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5791 if (getSettings().supportTouchOnly()) { 5792 removeTouchHighlight(true); 5793 } 5794 mHeldMotionless = MOTIONLESS_TRUE; 5795 mTouchMode = TOUCH_DONE_MODE; 5796 nativeHideCursor(); 5797 } 5798 5799 private long mTrackballFirstTime = 0; 5800 private long mTrackballLastTime = 0; 5801 private float mTrackballRemainsX = 0.0f; 5802 private float mTrackballRemainsY = 0.0f; 5803 private int mTrackballXMove = 0; 5804 private int mTrackballYMove = 0; 5805 private boolean mSelectingText = false; 5806 private boolean mSelectionStarted = false; 5807 private boolean mExtendSelection = false; 5808 private boolean mDrawSelectionPointer = false; 5809 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5810 private static final int TRACKBALL_TIMEOUT = 200; 5811 private static final int TRACKBALL_WAIT = 100; 5812 private static final int TRACKBALL_SCALE = 400; 5813 private static final int TRACKBALL_SCROLL_COUNT = 5; 5814 private static final int TRACKBALL_MOVE_COUNT = 10; 5815 private static final int TRACKBALL_MULTIPLIER = 3; 5816 private static final int SELECT_CURSOR_OFFSET = 16; 5817 private static final int SELECT_SCROLL = 5; 5818 private int mSelectX = 0; 5819 private int mSelectY = 0; 5820 private boolean mFocusSizeChanged = false; 5821 private boolean mTrackballDown = false; 5822 private long mTrackballUpTime = 0; 5823 private long mLastCursorTime = 0; 5824 private Rect mLastCursorBounds; 5825 5826 // Set by default; BrowserActivity clears to interpret trackball data 5827 // directly for movement. Currently, the framework only passes 5828 // arrow key events, not trackball events, from one child to the next 5829 private boolean mMapTrackballToArrowKeys = true; 5830 5831 public void setMapTrackballToArrowKeys(boolean setMap) { 5832 mMapTrackballToArrowKeys = setMap; 5833 } 5834 5835 void resetTrackballTime() { 5836 mTrackballLastTime = 0; 5837 } 5838 5839 @Override 5840 public boolean onTrackballEvent(MotionEvent ev) { 5841 long time = ev.getEventTime(); 5842 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5843 if (ev.getY() > 0) pageDown(true); 5844 if (ev.getY() < 0) pageUp(true); 5845 return true; 5846 } 5847 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5848 if (mSelectingText) { 5849 return true; // discard press if copy in progress 5850 } 5851 mTrackballDown = true; 5852 if (mNativeClass == 0) { 5853 return false; 5854 } 5855 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5856 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5857 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5858 nativeSelectBestAt(mLastCursorBounds); 5859 } 5860 if (DebugFlags.WEB_VIEW) { 5861 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5862 + " time=" + time 5863 + " mLastCursorTime=" + mLastCursorTime); 5864 } 5865 if (isInTouchMode()) requestFocusFromTouch(); 5866 return false; // let common code in onKeyDown at it 5867 } 5868 if (ev.getAction() == MotionEvent.ACTION_UP) { 5869 // LONG_PRESS_CENTER is set in common onKeyDown 5870 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5871 mTrackballDown = false; 5872 mTrackballUpTime = time; 5873 if (mSelectingText) { 5874 if (mExtendSelection) { 5875 copySelection(); 5876 selectionDone(); 5877 } else { 5878 mExtendSelection = true; 5879 nativeSetExtendSelection(); 5880 invalidate(); // draw the i-beam instead of the arrow 5881 } 5882 return true; // discard press if copy in progress 5883 } 5884 if (DebugFlags.WEB_VIEW) { 5885 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5886 + " time=" + time 5887 ); 5888 } 5889 return false; // let common code in onKeyUp at it 5890 } 5891 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 5892 (mAccessibilityInjector != null || mAccessibilityScriptInjected)) { 5893 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5894 return false; 5895 } 5896 if (mTrackballDown) { 5897 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5898 return true; // discard move if trackball is down 5899 } 5900 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5901 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5902 return true; 5903 } 5904 // TODO: alternatively we can do panning as touch does 5905 switchOutDrawHistory(); 5906 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5907 if (DebugFlags.WEB_VIEW) { 5908 Log.v(LOGTAG, "onTrackballEvent time=" 5909 + time + " last=" + mTrackballLastTime); 5910 } 5911 mTrackballFirstTime = time; 5912 mTrackballXMove = mTrackballYMove = 0; 5913 } 5914 mTrackballLastTime = time; 5915 if (DebugFlags.WEB_VIEW) { 5916 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5917 } 5918 mTrackballRemainsX += ev.getX(); 5919 mTrackballRemainsY += ev.getY(); 5920 doTrackball(time, ev.getMetaState()); 5921 return true; 5922 } 5923 5924 void moveSelection(float xRate, float yRate) { 5925 if (mNativeClass == 0) 5926 return; 5927 int width = getViewWidth(); 5928 int height = getViewHeight(); 5929 mSelectX += xRate; 5930 mSelectY += yRate; 5931 int maxX = width + mScrollX; 5932 int maxY = height + mScrollY; 5933 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5934 , mSelectX)); 5935 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5936 , mSelectY)); 5937 if (DebugFlags.WEB_VIEW) { 5938 Log.v(LOGTAG, "moveSelection" 5939 + " mSelectX=" + mSelectX 5940 + " mSelectY=" + mSelectY 5941 + " mScrollX=" + mScrollX 5942 + " mScrollY=" + mScrollY 5943 + " xRate=" + xRate 5944 + " yRate=" + yRate 5945 ); 5946 } 5947 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 5948 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5949 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5950 : 0; 5951 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5952 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5953 : 0; 5954 pinScrollBy(scrollX, scrollY, true, 0); 5955 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5956 requestRectangleOnScreen(select); 5957 invalidate(); 5958 } 5959 5960 private int scaleTrackballX(float xRate, int width) { 5961 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5962 int nextXMove = xMove; 5963 if (xMove > 0) { 5964 if (xMove > mTrackballXMove) { 5965 xMove -= mTrackballXMove; 5966 } 5967 } else if (xMove < mTrackballXMove) { 5968 xMove -= mTrackballXMove; 5969 } 5970 mTrackballXMove = nextXMove; 5971 return xMove; 5972 } 5973 5974 private int scaleTrackballY(float yRate, int height) { 5975 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5976 int nextYMove = yMove; 5977 if (yMove > 0) { 5978 if (yMove > mTrackballYMove) { 5979 yMove -= mTrackballYMove; 5980 } 5981 } else if (yMove < mTrackballYMove) { 5982 yMove -= mTrackballYMove; 5983 } 5984 mTrackballYMove = nextYMove; 5985 return yMove; 5986 } 5987 5988 private int keyCodeToSoundsEffect(int keyCode) { 5989 switch(keyCode) { 5990 case KeyEvent.KEYCODE_DPAD_UP: 5991 return SoundEffectConstants.NAVIGATION_UP; 5992 case KeyEvent.KEYCODE_DPAD_RIGHT: 5993 return SoundEffectConstants.NAVIGATION_RIGHT; 5994 case KeyEvent.KEYCODE_DPAD_DOWN: 5995 return SoundEffectConstants.NAVIGATION_DOWN; 5996 case KeyEvent.KEYCODE_DPAD_LEFT: 5997 return SoundEffectConstants.NAVIGATION_LEFT; 5998 } 5999 throw new IllegalArgumentException("keyCode must be one of " + 6000 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6001 "KEYCODE_DPAD_LEFT}."); 6002 } 6003 6004 private void doTrackball(long time, int metaState) { 6005 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6006 if (elapsed == 0) { 6007 elapsed = TRACKBALL_TIMEOUT; 6008 } 6009 float xRate = mTrackballRemainsX * 1000 / elapsed; 6010 float yRate = mTrackballRemainsY * 1000 / elapsed; 6011 int viewWidth = getViewWidth(); 6012 int viewHeight = getViewHeight(); 6013 if (mSelectingText) { 6014 if (!mDrawSelectionPointer) { 6015 // The last selection was made by touch, disabling drawing the 6016 // selection pointer. Allow the trackball to adjust the 6017 // position of the touch control. 6018 mSelectX = contentToViewX(nativeSelectionX()); 6019 mSelectY = contentToViewY(nativeSelectionY()); 6020 mDrawSelectionPointer = mExtendSelection = true; 6021 nativeSetExtendSelection(); 6022 } 6023 moveSelection(scaleTrackballX(xRate, viewWidth), 6024 scaleTrackballY(yRate, viewHeight)); 6025 mTrackballRemainsX = mTrackballRemainsY = 0; 6026 return; 6027 } 6028 float ax = Math.abs(xRate); 6029 float ay = Math.abs(yRate); 6030 float maxA = Math.max(ax, ay); 6031 if (DebugFlags.WEB_VIEW) { 6032 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6033 + " xRate=" + xRate 6034 + " yRate=" + yRate 6035 + " mTrackballRemainsX=" + mTrackballRemainsX 6036 + " mTrackballRemainsY=" + mTrackballRemainsY); 6037 } 6038 int width = mContentWidth - viewWidth; 6039 int height = mContentHeight - viewHeight; 6040 if (width < 0) width = 0; 6041 if (height < 0) height = 0; 6042 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6043 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6044 maxA = Math.max(ax, ay); 6045 int count = Math.max(0, (int) maxA); 6046 int oldScrollX = mScrollX; 6047 int oldScrollY = mScrollY; 6048 if (count > 0) { 6049 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6050 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6051 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6052 KeyEvent.KEYCODE_DPAD_RIGHT; 6053 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6054 if (DebugFlags.WEB_VIEW) { 6055 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6056 + " count=" + count 6057 + " mTrackballRemainsX=" + mTrackballRemainsX 6058 + " mTrackballRemainsY=" + mTrackballRemainsY); 6059 } 6060 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6061 for (int i = 0; i < count; i++) { 6062 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6063 } 6064 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6065 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6066 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6067 } 6068 mTrackballRemainsX = mTrackballRemainsY = 0; 6069 } 6070 if (count >= TRACKBALL_SCROLL_COUNT) { 6071 int xMove = scaleTrackballX(xRate, width); 6072 int yMove = scaleTrackballY(yRate, height); 6073 if (DebugFlags.WEB_VIEW) { 6074 Log.v(LOGTAG, "doTrackball pinScrollBy" 6075 + " count=" + count 6076 + " xMove=" + xMove + " yMove=" + yMove 6077 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6078 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6079 ); 6080 } 6081 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6082 xMove = 0; 6083 } 6084 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6085 yMove = 0; 6086 } 6087 if (xMove != 0 || yMove != 0) { 6088 pinScrollBy(xMove, yMove, true, 0); 6089 } 6090 mUserScroll = true; 6091 } 6092 } 6093 6094 /** 6095 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6096 * @return Maximum horizontal scroll position within real content 6097 */ 6098 int computeMaxScrollX() { 6099 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6100 } 6101 6102 /** 6103 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6104 * @return Maximum vertical scroll position within real content 6105 */ 6106 int computeMaxScrollY() { 6107 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6108 - getViewHeightWithTitle(), 0); 6109 } 6110 6111 boolean updateScrollCoordinates(int x, int y) { 6112 int oldX = mScrollX; 6113 int oldY = mScrollY; 6114 mScrollX = x; 6115 mScrollY = y; 6116 if (oldX != mScrollX || oldY != mScrollY) { 6117 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6118 return true; 6119 } else { 6120 return false; 6121 } 6122 } 6123 6124 public void flingScroll(int vx, int vy) { 6125 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6126 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6127 invalidate(); 6128 } 6129 6130 private void doFling() { 6131 if (mVelocityTracker == null) { 6132 return; 6133 } 6134 int maxX = computeMaxScrollX(); 6135 int maxY = computeMaxScrollY(); 6136 6137 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6138 int vx = (int) mVelocityTracker.getXVelocity(); 6139 int vy = (int) mVelocityTracker.getYVelocity(); 6140 6141 int scrollX = mScrollX; 6142 int scrollY = mScrollY; 6143 int overscrollDistance = mOverscrollDistance; 6144 int overflingDistance = mOverflingDistance; 6145 6146 // Use the layer's scroll data if applicable. 6147 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6148 scrollX = mScrollingLayerRect.left; 6149 scrollY = mScrollingLayerRect.top; 6150 maxX = mScrollingLayerRect.right; 6151 maxY = mScrollingLayerRect.bottom; 6152 // No overscrolling for layers. 6153 overscrollDistance = overflingDistance = 0; 6154 } 6155 6156 if (mSnapScrollMode != SNAP_NONE) { 6157 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6158 vy = 0; 6159 } else { 6160 vx = 0; 6161 } 6162 } 6163 if (true /* EMG release: make our fling more like Maps' */) { 6164 // maps cuts their velocity in half 6165 vx = vx * 3 / 4; 6166 vy = vy * 3 / 4; 6167 } 6168 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6169 WebViewCore.resumePriority(); 6170 if (!mSelectingText) { 6171 WebViewCore.resumeUpdatePicture(mWebViewCore); 6172 } 6173 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6174 invalidate(); 6175 } 6176 return; 6177 } 6178 float currentVelocity = mScroller.getCurrVelocity(); 6179 float velocity = (float) Math.hypot(vx, vy); 6180 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6181 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6182 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6183 - Math.atan2(vy, vx))); 6184 final float circle = (float) (Math.PI) * 2.0f; 6185 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6186 vx += currentVelocity * mLastVelX / mLastVelocity; 6187 vy += currentVelocity * mLastVelY / mLastVelocity; 6188 velocity = (float) Math.hypot(vx, vy); 6189 if (DebugFlags.WEB_VIEW) { 6190 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6191 } 6192 } else if (DebugFlags.WEB_VIEW) { 6193 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6194 } 6195 } else if (DebugFlags.WEB_VIEW) { 6196 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6197 + " current=" + currentVelocity 6198 + " vx=" + vx + " vy=" + vy 6199 + " maxX=" + maxX + " maxY=" + maxY 6200 + " scrollX=" + scrollX + " scrollY=" + scrollY 6201 + " layer=" + mScrollingLayer); 6202 } 6203 6204 // Allow sloppy flings without overscrolling at the edges. 6205 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6206 vx = 0; 6207 } 6208 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6209 vy = 0; 6210 } 6211 6212 if (overscrollDistance < overflingDistance) { 6213 if ((vx > 0 && scrollX == -overscrollDistance) || 6214 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6215 vx = 0; 6216 } 6217 if ((vy > 0 && scrollY == -overscrollDistance) || 6218 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6219 vy = 0; 6220 } 6221 } 6222 6223 mLastVelX = vx; 6224 mLastVelY = vy; 6225 mLastVelocity = velocity; 6226 6227 // no horizontal overscroll if the content just fits 6228 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6229 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6230 // Duration is calculated based on velocity. With range boundaries and overscroll 6231 // we may not know how long the final animation will take. (Hence the deprecation 6232 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6233 // resumes during this effect we will take a performance hit. See computeScroll; 6234 // we resume webcore there when the animation is finished. 6235 final int time = mScroller.getDuration(); 6236 6237 // Suppress scrollbars for layer scrolling. 6238 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6239 awakenScrollBars(time); 6240 } 6241 6242 invalidate(); 6243 } 6244 6245 /** 6246 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6247 * in charge of installing this view to the view hierarchy. This view will 6248 * become visible when the user starts scrolling via touch and fade away if 6249 * the user does not interact with it. 6250 * <p/> 6251 * API version 3 introduces a built-in zoom mechanism that is shown 6252 * automatically by the MapView. This is the preferred approach for 6253 * showing the zoom UI. 6254 * 6255 * @deprecated The built-in zoom mechanism is preferred, see 6256 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6257 */ 6258 @Deprecated 6259 public View getZoomControls() { 6260 if (!getSettings().supportZoom()) { 6261 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6262 return null; 6263 } 6264 return mZoomManager.getExternalZoomPicker(); 6265 } 6266 6267 void dismissZoomControl() { 6268 mZoomManager.dismissZoomPicker(); 6269 } 6270 6271 float getDefaultZoomScale() { 6272 return mZoomManager.getDefaultScale(); 6273 } 6274 6275 /** 6276 * @return TRUE if the WebView can be zoomed in. 6277 */ 6278 public boolean canZoomIn() { 6279 return mZoomManager.canZoomIn(); 6280 } 6281 6282 /** 6283 * @return TRUE if the WebView can be zoomed out. 6284 */ 6285 public boolean canZoomOut() { 6286 return mZoomManager.canZoomOut(); 6287 } 6288 6289 /** 6290 * Perform zoom in in the webview 6291 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6292 */ 6293 public boolean zoomIn() { 6294 return mZoomManager.zoomIn(); 6295 } 6296 6297 /** 6298 * Perform zoom out in the webview 6299 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6300 */ 6301 public boolean zoomOut() { 6302 return mZoomManager.zoomOut(); 6303 } 6304 6305 private void updateSelection() { 6306 if (mNativeClass == 0) { 6307 return; 6308 } 6309 // mLastTouchX and mLastTouchY are the point in the current viewport 6310 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6311 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6312 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 6313 contentX + mNavSlop, contentY + mNavSlop); 6314 nativeSelectBestAt(rect); 6315 mInitialHitTestResult = hitTestResult(null); 6316 } 6317 6318 /** 6319 * Scroll the focused text field/area to match the WebTextView 6320 * @param xPercent New x position of the WebTextView from 0 to 1. 6321 * @param y New y position of the WebTextView in view coordinates 6322 */ 6323 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 6324 if (!inEditingMode() || mWebViewCore == null) { 6325 return; 6326 } 6327 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 6328 // Since this position is relative to the top of the text input 6329 // field, we do not need to take the title bar's height into 6330 // consideration. 6331 viewToContentDimension(y), 6332 new Float(xPercent)); 6333 } 6334 6335 /** 6336 * Set our starting point and time for a drag from the WebTextView. 6337 */ 6338 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6339 if (!inEditingMode()) { 6340 return; 6341 } 6342 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 6343 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 6344 mLastTouchTime = eventTime; 6345 if (!mScroller.isFinished()) { 6346 abortAnimation(); 6347 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6348 } 6349 mSnapScrollMode = SNAP_NONE; 6350 mVelocityTracker = VelocityTracker.obtain(); 6351 mTouchMode = TOUCH_DRAG_START_MODE; 6352 } 6353 6354 /** 6355 * Given a motion event from the WebTextView, set its location to our 6356 * coordinates, and handle the event. 6357 */ 6358 /*package*/ boolean textFieldDrag(MotionEvent event) { 6359 if (!inEditingMode()) { 6360 return false; 6361 } 6362 mDragFromTextInput = true; 6363 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6364 (float) (mWebTextView.getTop() - mScrollY)); 6365 boolean result = onTouchEvent(event); 6366 mDragFromTextInput = false; 6367 return result; 6368 } 6369 6370 /** 6371 * Due a touch up from a WebTextView. This will be handled by webkit to 6372 * change the selection. 6373 * @param event MotionEvent in the WebTextView's coordinates. 6374 */ 6375 /*package*/ void touchUpOnTextField(MotionEvent event) { 6376 if (!inEditingMode()) { 6377 return; 6378 } 6379 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6380 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6381 nativeMotionUp(x, y, mNavSlop); 6382 } 6383 6384 /** 6385 * Called when pressing the center key or trackball on a textfield. 6386 */ 6387 /*package*/ void centerKeyPressOnTextField() { 6388 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6389 nativeCursorNodePointer()); 6390 } 6391 6392 private void doShortPress() { 6393 if (mNativeClass == 0) { 6394 return; 6395 } 6396 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6397 return; 6398 } 6399 mTouchMode = TOUCH_DONE_MODE; 6400 switchOutDrawHistory(); 6401 // mLastTouchX and mLastTouchY are the point in the current viewport 6402 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6403 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6404 if (getSettings().supportTouchOnly()) { 6405 removeTouchHighlight(false); 6406 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6407 // use "0" as generation id to inform WebKit to use the same x/y as 6408 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6409 touchUpData.mMoveGeneration = 0; 6410 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6411 } else if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6412 WebViewCore.MotionUpData motionUpData = new WebViewCore 6413 .MotionUpData(); 6414 motionUpData.mFrame = nativeCacheHitFramePointer(); 6415 motionUpData.mNode = nativeCacheHitNodePointer(); 6416 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6417 motionUpData.mX = contentX; 6418 motionUpData.mY = contentY; 6419 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6420 motionUpData); 6421 } else { 6422 doMotionUp(contentX, contentY); 6423 } 6424 } 6425 6426 private void doMotionUp(int contentX, int contentY) { 6427 if (nativeMotionUp(contentX, contentY, mNavSlop) && mLogEvent) { 6428 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6429 } 6430 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6431 playSoundEffect(SoundEffectConstants.CLICK); 6432 } 6433 } 6434 6435 /* 6436 * Return true if the view (Plugin) is fully visible and maximized inside 6437 * the WebView. 6438 */ 6439 boolean isPluginFitOnScreen(ViewManager.ChildView view) { 6440 final int viewWidth = getViewWidth(); 6441 final int viewHeight = getViewHeightWithTitle(); 6442 float scale = Math.min((float) viewWidth / view.width, (float) viewHeight / view.height); 6443 scale = mZoomManager.computeScaleWithLimits(scale); 6444 return !mZoomManager.willScaleTriggerZoom(scale) 6445 && contentToViewX(view.x) >= mScrollX 6446 && contentToViewX(view.x + view.width) <= mScrollX + viewWidth 6447 && contentToViewY(view.y) >= mScrollY 6448 && contentToViewY(view.y + view.height) <= mScrollY + viewHeight; 6449 } 6450 6451 /* 6452 * Maximize and center the rectangle, specified in the document coordinate 6453 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6454 * animated scroll to center it. If the zoom needs to be changed, find the 6455 * zoom center and do a smooth zoom transition. 6456 */ 6457 void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 6458 int viewWidth = getViewWidth(); 6459 int viewHeight = getViewHeightWithTitle(); 6460 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 6461 / docHeight); 6462 scale = mZoomManager.computeScaleWithLimits(scale); 6463 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6464 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 6465 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 6466 true, 0); 6467 } else { 6468 float actualScale = mZoomManager.getScale(); 6469 float oldScreenX = docX * actualScale - mScrollX; 6470 float rectViewX = docX * scale; 6471 float rectViewWidth = docWidth * scale; 6472 float newMaxWidth = mContentWidth * scale; 6473 float newScreenX = (viewWidth - rectViewWidth) / 2; 6474 // pin the newX to the WebView 6475 if (newScreenX > rectViewX) { 6476 newScreenX = rectViewX; 6477 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6478 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6479 } 6480 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6481 / (scale - actualScale); 6482 float oldScreenY = docY * actualScale + getTitleHeight() 6483 - mScrollY; 6484 float rectViewY = docY * scale + getTitleHeight(); 6485 float rectViewHeight = docHeight * scale; 6486 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6487 float newScreenY = (viewHeight - rectViewHeight) / 2; 6488 // pin the newY to the WebView 6489 if (newScreenY > rectViewY) { 6490 newScreenY = rectViewY; 6491 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6492 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6493 } 6494 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6495 / (scale - actualScale); 6496 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6497 mZoomManager.startZoomAnimation(scale, false); 6498 } 6499 } 6500 6501 // Called by JNI to handle a touch on a node representing an email address, 6502 // address, or phone number 6503 private void overrideLoading(String url) { 6504 mCallbackProxy.uiOverrideUrlLoading(url); 6505 } 6506 6507 @Override 6508 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6509 // FIXME: If a subwindow is showing find, and the user touches the 6510 // background window, it can steal focus. 6511 if (mFindIsUp) return false; 6512 boolean result = false; 6513 if (inEditingMode()) { 6514 result = mWebTextView.requestFocus(direction, 6515 previouslyFocusedRect); 6516 } else { 6517 result = super.requestFocus(direction, previouslyFocusedRect); 6518 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6519 // For cases such as GMail, where we gain focus from a direction, 6520 // we want to move to the first available link. 6521 // FIXME: If there are no visible links, we may not want to 6522 int fakeKeyDirection = 0; 6523 switch(direction) { 6524 case View.FOCUS_UP: 6525 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6526 break; 6527 case View.FOCUS_DOWN: 6528 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6529 break; 6530 case View.FOCUS_LEFT: 6531 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6532 break; 6533 case View.FOCUS_RIGHT: 6534 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6535 break; 6536 default: 6537 return result; 6538 } 6539 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6540 navHandledKey(fakeKeyDirection, 1, true, 0); 6541 } 6542 } 6543 } 6544 return result; 6545 } 6546 6547 @Override 6548 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6549 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6550 6551 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6552 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6553 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6554 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6555 6556 int measuredHeight = heightSize; 6557 int measuredWidth = widthSize; 6558 6559 // Grab the content size from WebViewCore. 6560 int contentHeight = contentToViewDimension(mContentHeight); 6561 int contentWidth = contentToViewDimension(mContentWidth); 6562 6563// Log.d(LOGTAG, "------- measure " + heightMode); 6564 6565 if (heightMode != MeasureSpec.EXACTLY) { 6566 mHeightCanMeasure = true; 6567 measuredHeight = contentHeight; 6568 if (heightMode == MeasureSpec.AT_MOST) { 6569 // If we are larger than the AT_MOST height, then our height can 6570 // no longer be measured and we should scroll internally. 6571 if (measuredHeight > heightSize) { 6572 measuredHeight = heightSize; 6573 mHeightCanMeasure = false; 6574 } else if (measuredHeight < heightSize) { 6575 measuredHeight |= MEASURED_STATE_TOO_SMALL; 6576 } 6577 } 6578 } else { 6579 mHeightCanMeasure = false; 6580 } 6581 if (mNativeClass != 0) { 6582 nativeSetHeightCanMeasure(mHeightCanMeasure); 6583 } 6584 // For the width, always use the given size unless unspecified. 6585 if (widthMode == MeasureSpec.UNSPECIFIED) { 6586 mWidthCanMeasure = true; 6587 measuredWidth = contentWidth; 6588 } else { 6589 if (measuredWidth < contentWidth) { 6590 measuredWidth |= MEASURED_STATE_TOO_SMALL; 6591 } 6592 mWidthCanMeasure = false; 6593 } 6594 6595 synchronized (this) { 6596 setMeasuredDimension(measuredWidth, measuredHeight); 6597 } 6598 } 6599 6600 @Override 6601 public boolean requestChildRectangleOnScreen(View child, 6602 Rect rect, 6603 boolean immediate) { 6604 if (mNativeClass == 0) { 6605 return false; 6606 } 6607 // don't scroll while in zoom animation. When it is done, we will adjust 6608 // the necessary components (e.g., WebTextView if it is in editing mode) 6609 if (mZoomManager.isFixedLengthAnimationInProgress()) { 6610 return false; 6611 } 6612 6613 rect.offset(child.getLeft() - child.getScrollX(), 6614 child.getTop() - child.getScrollY()); 6615 6616 Rect content = new Rect(viewToContentX(mScrollX), 6617 viewToContentY(mScrollY), 6618 viewToContentX(mScrollX + getWidth() 6619 - getVerticalScrollbarWidth()), 6620 viewToContentY(mScrollY + getViewHeightWithTitle())); 6621 content = nativeSubtractLayers(content); 6622 int screenTop = contentToViewY(content.top); 6623 int screenBottom = contentToViewY(content.bottom); 6624 int height = screenBottom - screenTop; 6625 int scrollYDelta = 0; 6626 6627 if (rect.bottom > screenBottom) { 6628 int oneThirdOfScreenHeight = height / 3; 6629 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6630 // If the rectangle is too tall to fit in the bottom two thirds 6631 // of the screen, place it at the top. 6632 scrollYDelta = rect.top - screenTop; 6633 } else { 6634 // If the rectangle will still fit on screen, we want its 6635 // top to be in the top third of the screen. 6636 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6637 } 6638 } else if (rect.top < screenTop) { 6639 scrollYDelta = rect.top - screenTop; 6640 } 6641 6642 int screenLeft = contentToViewX(content.left); 6643 int screenRight = contentToViewX(content.right); 6644 int width = screenRight - screenLeft; 6645 int scrollXDelta = 0; 6646 6647 if (rect.right > screenRight && rect.left > screenLeft) { 6648 if (rect.width() > width) { 6649 scrollXDelta += (rect.left - screenLeft); 6650 } else { 6651 scrollXDelta += (rect.right - screenRight); 6652 } 6653 } else if (rect.left < screenLeft) { 6654 scrollXDelta -= (screenLeft - rect.left); 6655 } 6656 6657 if ((scrollYDelta | scrollXDelta) != 0) { 6658 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6659 } 6660 6661 return false; 6662 } 6663 6664 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6665 String replace, int newStart, int newEnd) { 6666 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6667 arg.mReplace = replace; 6668 arg.mNewStart = newStart; 6669 arg.mNewEnd = newEnd; 6670 mTextGeneration++; 6671 arg.mTextGeneration = mTextGeneration; 6672 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6673 } 6674 6675 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6676 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6677 arg.mEvent = event; 6678 arg.mCurrentText = currentText; 6679 // Increase our text generation number, and pass it to webcore thread 6680 mTextGeneration++; 6681 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6682 // WebKit's document state is not saved until about to leave the page. 6683 // To make sure the host application, like Browser, has the up to date 6684 // document state when it goes to background, we force to save the 6685 // document state. 6686 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6687 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6688 cursorData(), 1000); 6689 } 6690 6691 /* package */ synchronized WebViewCore getWebViewCore() { 6692 return mWebViewCore; 6693 } 6694 6695 //------------------------------------------------------------------------- 6696 // Methods can be called from a separate thread, like WebViewCore 6697 // If it needs to call the View system, it has to send message. 6698 //------------------------------------------------------------------------- 6699 6700 /** 6701 * General handler to receive message coming from webkit thread 6702 */ 6703 class PrivateHandler extends Handler { 6704 @Override 6705 public void handleMessage(Message msg) { 6706 // exclude INVAL_RECT_MSG_ID since it is frequently output 6707 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6708 if (msg.what >= FIRST_PRIVATE_MSG_ID 6709 && msg.what <= LAST_PRIVATE_MSG_ID) { 6710 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6711 - FIRST_PRIVATE_MSG_ID]); 6712 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6713 && msg.what <= LAST_PACKAGE_MSG_ID) { 6714 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6715 - FIRST_PACKAGE_MSG_ID]); 6716 } else { 6717 Log.v(LOGTAG, Integer.toString(msg.what)); 6718 } 6719 } 6720 if (mWebViewCore == null) { 6721 // after WebView's destroy() is called, skip handling messages. 6722 return; 6723 } 6724 switch (msg.what) { 6725 case REMEMBER_PASSWORD: { 6726 mDatabase.setUsernamePassword( 6727 msg.getData().getString("host"), 6728 msg.getData().getString("username"), 6729 msg.getData().getString("password")); 6730 ((Message) msg.obj).sendToTarget(); 6731 break; 6732 } 6733 case NEVER_REMEMBER_PASSWORD: { 6734 mDatabase.setUsernamePassword( 6735 msg.getData().getString("host"), null, null); 6736 ((Message) msg.obj).sendToTarget(); 6737 break; 6738 } 6739 case PREVENT_DEFAULT_TIMEOUT: { 6740 // if timeout happens, cancel it so that it won't block UI 6741 // to continue handling touch events 6742 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6743 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6744 || (msg.arg1 == MotionEvent.ACTION_MOVE 6745 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6746 cancelWebCoreTouchEvent( 6747 viewToContentX((int) mLastTouchX + mScrollX), 6748 viewToContentY((int) mLastTouchY + mScrollY), 6749 true); 6750 } 6751 break; 6752 } 6753 case SCROLL_SELECT_TEXT: { 6754 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 6755 mSentAutoScrollMessage = false; 6756 break; 6757 } 6758 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 6759 sendEmptyMessageDelayed( 6760 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 6761 break; 6762 } 6763 case SWITCH_TO_SHORTPRESS: { 6764 mInitialHitTestResult = null; // set by updateSelection() 6765 if (mTouchMode == TOUCH_INIT_MODE) { 6766 if (!getSettings().supportTouchOnly() 6767 && mPreventDefault != PREVENT_DEFAULT_YES) { 6768 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6769 updateSelection(); 6770 } else { 6771 // set to TOUCH_SHORTPRESS_MODE so that it won't 6772 // trigger double tap any more 6773 mTouchMode = TOUCH_SHORTPRESS_MODE; 6774 } 6775 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6776 mTouchMode = TOUCH_DONE_MODE; 6777 } 6778 break; 6779 } 6780 case SWITCH_TO_LONGPRESS: { 6781 if (getSettings().supportTouchOnly()) { 6782 removeTouchHighlight(false); 6783 } 6784 if (inFullScreenMode() || mDeferTouchProcess) { 6785 TouchEventData ted = new TouchEventData(); 6786 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6787 ted.mPoints = new Point[1]; 6788 ted.mPoints[0] = new Point(viewToContentX((int) mLastTouchX + mScrollX), 6789 viewToContentY((int) mLastTouchY + mScrollY)); 6790 // metaState for long press is tricky. Should it be the 6791 // state when the press started or when the press was 6792 // released? Or some intermediary key state? For 6793 // simplicity for now, we don't set it. 6794 ted.mMetaState = 0; 6795 ted.mReprocess = mDeferTouchProcess; 6796 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6797 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6798 mTouchMode = TOUCH_DONE_MODE; 6799 performLongClick(); 6800 } 6801 break; 6802 } 6803 case RELEASE_SINGLE_TAP: { 6804 doShortPress(); 6805 break; 6806 } 6807 case SCROLL_BY_MSG_ID: 6808 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6809 break; 6810 case SYNC_SCROLL_TO_MSG_ID: 6811 if (mUserScroll) { 6812 // if user has scrolled explicitly, don't sync the 6813 // scroll position any more 6814 mUserScroll = false; 6815 break; 6816 } 6817 setContentScrollTo(msg.arg1, msg.arg2); 6818 break; 6819 case SCROLL_TO_MSG_ID: 6820 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6821 // if we can't scroll to the exact position due to pin, 6822 // send a message to WebCore to re-scroll when we get a 6823 // new picture 6824 mUserScroll = false; 6825 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6826 msg.arg1, msg.arg2); 6827 } 6828 break; 6829 case SPAWN_SCROLL_TO_MSG_ID: 6830 spawnContentScrollTo(msg.arg1, msg.arg2); 6831 break; 6832 case UPDATE_ZOOM_RANGE: { 6833 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 6834 // mScrollX contains the new minPrefWidth 6835 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 6836 break; 6837 } 6838 case REPLACE_BASE_CONTENT: { 6839 nativeReplaceBaseContent(msg.arg1); 6840 break; 6841 } 6842 case NEW_PICTURE_MSG_ID: { 6843 // called for new content 6844 mUserScroll = false; 6845 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 6846 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion.getBounds()); 6847 final Point viewSize = draw.mViewSize; 6848 WebViewCore.ViewState viewState = draw.mViewState; 6849 boolean isPictureAfterFirstLayout = viewState != null; 6850 if (isPictureAfterFirstLayout) { 6851 // Reset the last sent data here since dealing with new page. 6852 mLastWidthSent = 0; 6853 mZoomManager.onFirstLayout(draw); 6854 if (!mDrawHistory) { 6855 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 6856 // As we are on a new page, remove the WebTextView. This 6857 // is necessary for page loads driven by webkit, and in 6858 // particular when the user was on a password field, so 6859 // the WebTextView was visible. 6860 clearTextEntry(); 6861 } 6862 } 6863 6864 // We update the layout (i.e. request a layout from the 6865 // view system) if the last view size that we sent to 6866 // WebCore matches the view size of the picture we just 6867 // received in the fixed dimension. 6868 final boolean updateLayout = viewSize.x == mLastWidthSent 6869 && viewSize.y == mLastHeightSent; 6870 recordNewContentSize(draw.mContentSize.x, 6871 draw.mContentSize.y, updateLayout); 6872 if (DebugFlags.WEB_VIEW) { 6873 Rect b = draw.mInvalRegion.getBounds(); 6874 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6875 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6876 } 6877 invalidateContentRect(draw.mInvalRegion.getBounds()); 6878 6879 if (mPictureListener != null) { 6880 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6881 } 6882 6883 // update the zoom information based on the new picture 6884 mZoomManager.onNewPicture(draw); 6885 6886 if (draw.mFocusSizeChanged && inEditingMode()) { 6887 mFocusSizeChanged = true; 6888 } 6889 if (isPictureAfterFirstLayout) { 6890 mViewManager.postReadyToDrawAll(); 6891 } 6892 break; 6893 } 6894 case WEBCORE_INITIALIZED_MSG_ID: 6895 // nativeCreate sets mNativeClass to a non-zero value 6896 nativeCreate(msg.arg1); 6897 break; 6898 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6899 // Make sure that the textfield is currently focused 6900 // and representing the same node as the pointer. 6901 if (inEditingMode() && 6902 mWebTextView.isSameTextField(msg.arg1)) { 6903 if (msg.getData().getBoolean("password")) { 6904 Spannable text = (Spannable) mWebTextView.getText(); 6905 int start = Selection.getSelectionStart(text); 6906 int end = Selection.getSelectionEnd(text); 6907 mWebTextView.setInPassword(true); 6908 // Restore the selection, which may have been 6909 // ruined by setInPassword. 6910 Spannable pword = 6911 (Spannable) mWebTextView.getText(); 6912 Selection.setSelection(pword, start, end); 6913 // If the text entry has created more events, ignore 6914 // this one. 6915 } else if (msg.arg2 == mTextGeneration) { 6916 String text = (String) msg.obj; 6917 if (null == text) { 6918 text = ""; 6919 } 6920 mWebTextView.setTextAndKeepSelection(text); 6921 } 6922 } 6923 break; 6924 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6925 displaySoftKeyboard(true); 6926 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 6927 case UPDATE_TEXT_SELECTION_MSG_ID: 6928 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6929 (WebViewCore.TextSelectionData) msg.obj); 6930 break; 6931 case FORM_DID_BLUR: 6932 if (inEditingMode() 6933 && mWebTextView.isSameTextField(msg.arg1)) { 6934 hideSoftKeyboard(); 6935 } 6936 break; 6937 case RETURN_LABEL: 6938 if (inEditingMode() 6939 && mWebTextView.isSameTextField(msg.arg1)) { 6940 mWebTextView.setHint((String) msg.obj); 6941 InputMethodManager imm 6942 = InputMethodManager.peekInstance(); 6943 // The hint is propagated to the IME in 6944 // onCreateInputConnection. If the IME is already 6945 // active, restart it so that its hint text is updated. 6946 if (imm != null && imm.isActive(mWebTextView)) { 6947 imm.restartInput(mWebTextView); 6948 } 6949 } 6950 break; 6951 case UNHANDLED_NAV_KEY: 6952 navHandledKey(msg.arg1, 1, false, 0); 6953 break; 6954 case UPDATE_TEXT_ENTRY_MSG_ID: 6955 // this is sent after finishing resize in WebViewCore. Make 6956 // sure the text edit box is still on the screen. 6957 if (inEditingMode() && nativeCursorIsTextInput()) { 6958 mWebTextView.bringIntoView(); 6959 rebuildWebTextView(); 6960 } 6961 break; 6962 case CLEAR_TEXT_ENTRY: 6963 clearTextEntry(); 6964 break; 6965 case INVAL_RECT_MSG_ID: { 6966 Rect r = (Rect)msg.obj; 6967 if (r == null) { 6968 invalidate(); 6969 } else { 6970 // we need to scale r from content into view coords, 6971 // which viewInvalidate() does for us 6972 viewInvalidate(r.left, r.top, r.right, r.bottom); 6973 } 6974 break; 6975 } 6976 case REQUEST_FORM_DATA: 6977 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6978 if (mWebTextView.isSameTextField(msg.arg1)) { 6979 mWebTextView.setAdapterCustom(adapter); 6980 } 6981 break; 6982 case RESUME_WEBCORE_PRIORITY: 6983 WebViewCore.resumePriority(); 6984 WebViewCore.resumeUpdatePicture(mWebViewCore); 6985 break; 6986 6987 case LONG_PRESS_CENTER: 6988 // as this is shared by keydown and trackballdown, reset all 6989 // the states 6990 mGotCenterDown = false; 6991 mTrackballDown = false; 6992 performLongClick(); 6993 break; 6994 6995 case WEBCORE_NEED_TOUCH_EVENTS: 6996 mForwardTouchEvents = (msg.arg1 != 0); 6997 break; 6998 6999 case PREVENT_TOUCH_ID: 7000 if (inFullScreenMode()) { 7001 break; 7002 } 7003 if (msg.obj == null) { 7004 if (msg.arg1 == MotionEvent.ACTION_DOWN 7005 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7006 // if prevent default is called from WebCore, UI 7007 // will not handle the rest of the touch events any 7008 // more. 7009 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7010 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7011 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 7012 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7013 // the return for the first ACTION_MOVE will decide 7014 // whether UI will handle touch or not. Currently no 7015 // support for alternating prevent default 7016 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7017 : PREVENT_DEFAULT_NO; 7018 } 7019 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7020 mTouchHighlightRegion.setEmpty(); 7021 } 7022 } else if (msg.arg2 == 0) { 7023 // prevent default is not called in WebCore, so the 7024 // message needs to be reprocessed in UI 7025 TouchEventData ted = (TouchEventData) msg.obj; 7026 switch (ted.mAction) { 7027 case MotionEvent.ACTION_DOWN: 7028 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 7029 - mScrollX; 7030 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 7031 - mScrollY; 7032 mDeferTouchMode = TOUCH_INIT_MODE; 7033 break; 7034 case MotionEvent.ACTION_MOVE: { 7035 // no snapping in defer process 7036 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 7037 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 7038 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7039 mDeferTouchMode = TOUCH_DRAG_MODE; 7040 mLastDeferTouchX = x; 7041 mLastDeferTouchY = y; 7042 startScrollingLayer(x, y); 7043 startDrag(); 7044 } 7045 int deltaX = pinLocX((int) (mScrollX 7046 + mLastDeferTouchX - x)) 7047 - mScrollX; 7048 int deltaY = pinLocY((int) (mScrollY 7049 + mLastDeferTouchY - y)) 7050 - mScrollY; 7051 doDrag(deltaX, deltaY); 7052 if (deltaX != 0) mLastDeferTouchX = x; 7053 if (deltaY != 0) mLastDeferTouchY = y; 7054 break; 7055 } 7056 case MotionEvent.ACTION_UP: 7057 case MotionEvent.ACTION_CANCEL: 7058 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7059 // no fling in defer process 7060 mScroller.springBack(mScrollX, mScrollY, 0, 7061 computeMaxScrollX(), 0, 7062 computeMaxScrollY()); 7063 invalidate(); 7064 WebViewCore.resumePriority(); 7065 WebViewCore.resumeUpdatePicture(mWebViewCore); 7066 } 7067 mDeferTouchMode = TOUCH_DONE_MODE; 7068 break; 7069 case WebViewCore.ACTION_DOUBLETAP: 7070 // doDoubleTap() needs mLastTouchX/Y as anchor 7071 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 7072 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 7073 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7074 mDeferTouchMode = TOUCH_DONE_MODE; 7075 break; 7076 case WebViewCore.ACTION_LONGPRESS: 7077 HitTestResult hitTest = getHitTestResult(); 7078 if (hitTest != null && hitTest.mType 7079 != HitTestResult.UNKNOWN_TYPE) { 7080 performLongClick(); 7081 } 7082 mDeferTouchMode = TOUCH_DONE_MODE; 7083 break; 7084 } 7085 } 7086 break; 7087 7088 case REQUEST_KEYBOARD: 7089 if (msg.arg1 == 0) { 7090 hideSoftKeyboard(); 7091 } else { 7092 displaySoftKeyboard(false); 7093 } 7094 break; 7095 7096 case FIND_AGAIN: 7097 // Ignore if find has been dismissed. 7098 if (mFindIsUp && mFindCallback != null) { 7099 mFindCallback.findAll(); 7100 } 7101 break; 7102 7103 case DRAG_HELD_MOTIONLESS: 7104 mHeldMotionless = MOTIONLESS_TRUE; 7105 invalidate(); 7106 // fall through to keep scrollbars awake 7107 7108 case AWAKEN_SCROLL_BARS: 7109 if (mTouchMode == TOUCH_DRAG_MODE 7110 && mHeldMotionless == MOTIONLESS_TRUE) { 7111 awakenScrollBars(ViewConfiguration 7112 .getScrollDefaultDelay(), false); 7113 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7114 .obtainMessage(AWAKEN_SCROLL_BARS), 7115 ViewConfiguration.getScrollDefaultDelay()); 7116 } 7117 break; 7118 7119 case DO_MOTION_UP: 7120 doMotionUp(msg.arg1, msg.arg2); 7121 break; 7122 7123 case SHOW_FULLSCREEN: { 7124 View view = (View) msg.obj; 7125 int npp = msg.arg1; 7126 7127 if (inFullScreenMode()) { 7128 Log.w(LOGTAG, "Should not have another full screen."); 7129 dismissFullScreenMode(); 7130 } 7131 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7132 mFullScreenHolder.setContentView(view); 7133 mFullScreenHolder.setCancelable(false); 7134 mFullScreenHolder.setCanceledOnTouchOutside(false); 7135 mFullScreenHolder.show(); 7136 7137 break; 7138 } 7139 case HIDE_FULLSCREEN: 7140 dismissFullScreenMode(); 7141 break; 7142 7143 case DOM_FOCUS_CHANGED: 7144 if (inEditingMode()) { 7145 nativeClearCursor(); 7146 rebuildWebTextView(); 7147 } 7148 break; 7149 7150 case SHOW_RECT_MSG_ID: { 7151 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7152 int x = mScrollX; 7153 int left = contentToViewX(data.mLeft); 7154 int width = contentToViewDimension(data.mWidth); 7155 int maxWidth = contentToViewDimension(data.mContentWidth); 7156 int viewWidth = getViewWidth(); 7157 if (width < viewWidth) { 7158 // center align 7159 x += left + width / 2 - mScrollX - viewWidth / 2; 7160 } else { 7161 x += (int) (left + data.mXPercentInDoc * width 7162 - mScrollX - data.mXPercentInView * viewWidth); 7163 } 7164 if (DebugFlags.WEB_VIEW) { 7165 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7166 width + ",maxWidth=" + maxWidth + 7167 ",viewWidth=" + viewWidth + ",x=" 7168 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7169 ",xPercentInView=" + data.mXPercentInView+ ")"); 7170 } 7171 // use the passing content width to cap x as the current 7172 // mContentWidth may not be updated yet 7173 x = Math.max(0, 7174 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7175 int top = contentToViewY(data.mTop); 7176 int height = contentToViewDimension(data.mHeight); 7177 int maxHeight = contentToViewDimension(data.mContentHeight); 7178 int viewHeight = getViewHeight(); 7179 int y = (int) (top + data.mYPercentInDoc * height - 7180 data.mYPercentInView * viewHeight); 7181 if (DebugFlags.WEB_VIEW) { 7182 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7183 height + ",maxHeight=" + maxHeight + 7184 ",viewHeight=" + viewHeight + ",y=" 7185 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7186 ",yPercentInView=" + data.mYPercentInView+ ")"); 7187 } 7188 // use the passing content height to cap y as the current 7189 // mContentHeight may not be updated yet 7190 y = Math.max(0, 7191 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7192 // We need to take into account the visible title height 7193 // when scrolling since y is an absolute view position. 7194 y = Math.max(0, y - getVisibleTitleHeight()); 7195 scrollTo(x, y); 7196 } 7197 break; 7198 7199 case CENTER_FIT_RECT: 7200 Rect r = (Rect)msg.obj; 7201 centerFitRect(r.left, r.top, r.width(), r.height()); 7202 break; 7203 7204 case SET_SCROLLBAR_MODES: 7205 mHorizontalScrollBarMode = msg.arg1; 7206 mVerticalScrollBarMode = msg.arg2; 7207 break; 7208 7209 case SELECTION_STRING_CHANGED: 7210 if (mAccessibilityInjector != null) { 7211 String selectionString = (String) msg.obj; 7212 mAccessibilityInjector.onSelectionStringChange(selectionString); 7213 } 7214 break; 7215 7216 case SET_TOUCH_HIGHLIGHT_RECTS: 7217 invalidate(mTouchHighlightRegion.getBounds()); 7218 mTouchHighlightRegion.setEmpty(); 7219 if (msg.obj != null) { 7220 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 7221 for (Rect rect : rects) { 7222 Rect viewRect = contentToViewRect(rect); 7223 // some sites, like stories in nytimes.com, set 7224 // mouse event handler in the top div. It is not 7225 // user friendly to highlight the div if it covers 7226 // more than half of the screen. 7227 if (viewRect.width() < getWidth() >> 1 7228 || viewRect.height() < getHeight() >> 1) { 7229 mTouchHighlightRegion.union(viewRect); 7230 invalidate(viewRect); 7231 } else { 7232 Log.w(LOGTAG, "Skip the huge selection rect:" 7233 + viewRect); 7234 } 7235 } 7236 } 7237 break; 7238 7239 case SAVE_WEBARCHIVE_FINISHED: 7240 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7241 if (saveMessage.mCallback != null) { 7242 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7243 } 7244 break; 7245 7246 case SET_AUTOFILLABLE: 7247 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 7248 if (mWebTextView != null) { 7249 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 7250 rebuildWebTextView(); 7251 } 7252 break; 7253 7254 case AUTOFILL_COMPLETE: 7255 if (mWebTextView != null) { 7256 // Clear the WebTextView adapter when AutoFill finishes 7257 // so that the drop down gets cleared. 7258 mWebTextView.setAdapterCustom(null); 7259 } 7260 break; 7261 7262 default: 7263 super.handleMessage(msg); 7264 break; 7265 } 7266 } 7267 } 7268 7269 /** 7270 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7271 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7272 */ 7273 private void updateTextSelectionFromMessage(int nodePointer, 7274 int textGeneration, WebViewCore.TextSelectionData data) { 7275 if (inEditingMode() 7276 && mWebTextView.isSameTextField(nodePointer) 7277 && textGeneration == mTextGeneration) { 7278 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7279 } 7280 } 7281 7282 // Class used to use a dropdown for a <select> element 7283 private class InvokeListBox implements Runnable { 7284 // Whether the listbox allows multiple selection. 7285 private boolean mMultiple; 7286 // Passed in to a list with multiple selection to tell 7287 // which items are selected. 7288 private int[] mSelectedArray; 7289 // Passed in to a list with single selection to tell 7290 // where the initial selection is. 7291 private int mSelection; 7292 7293 private Container[] mContainers; 7294 7295 // Need these to provide stable ids to my ArrayAdapter, 7296 // which normally does not have stable ids. (Bug 1250098) 7297 private class Container extends Object { 7298 /** 7299 * Possible values for mEnabled. Keep in sync with OptionStatus in 7300 * WebViewCore.cpp 7301 */ 7302 final static int OPTGROUP = -1; 7303 final static int OPTION_DISABLED = 0; 7304 final static int OPTION_ENABLED = 1; 7305 7306 String mString; 7307 int mEnabled; 7308 int mId; 7309 7310 public String toString() { 7311 return mString; 7312 } 7313 } 7314 7315 /** 7316 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7317 * and allow filtering. 7318 */ 7319 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7320 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7321 super(context, 7322 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7323 com.android.internal.R.layout.select_dialog_singlechoice, 7324 objects); 7325 } 7326 7327 @Override 7328 public View getView(int position, View convertView, 7329 ViewGroup parent) { 7330 // Always pass in null so that we will get a new CheckedTextView 7331 // Otherwise, an item which was previously used as an <optgroup> 7332 // element (i.e. has no check), could get used as an <option> 7333 // element, which needs a checkbox/radio, but it would not have 7334 // one. 7335 convertView = super.getView(position, null, parent); 7336 Container c = item(position); 7337 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7338 // ListView does not draw dividers between disabled and 7339 // enabled elements. Use a LinearLayout to provide dividers 7340 LinearLayout layout = new LinearLayout(mContext); 7341 layout.setOrientation(LinearLayout.VERTICAL); 7342 if (position > 0) { 7343 View dividerTop = new View(mContext); 7344 dividerTop.setBackgroundResource( 7345 android.R.drawable.divider_horizontal_bright); 7346 layout.addView(dividerTop); 7347 } 7348 7349 if (Container.OPTGROUP == c.mEnabled) { 7350 // Currently select_dialog_multichoice and 7351 // select_dialog_singlechoice are CheckedTextViews. If 7352 // that changes, the class cast will no longer be valid. 7353 Assert.assertTrue( 7354 convertView instanceof CheckedTextView); 7355 ((CheckedTextView) convertView).setCheckMarkDrawable( 7356 null); 7357 } else { 7358 // c.mEnabled == Container.OPTION_DISABLED 7359 // Draw the disabled element in a disabled state. 7360 convertView.setEnabled(false); 7361 } 7362 7363 layout.addView(convertView); 7364 if (position < getCount() - 1) { 7365 View dividerBottom = new View(mContext); 7366 dividerBottom.setBackgroundResource( 7367 android.R.drawable.divider_horizontal_bright); 7368 layout.addView(dividerBottom); 7369 } 7370 return layout; 7371 } 7372 return convertView; 7373 } 7374 7375 @Override 7376 public boolean hasStableIds() { 7377 // AdapterView's onChanged method uses this to determine whether 7378 // to restore the old state. Return false so that the old (out 7379 // of date) state does not replace the new, valid state. 7380 return false; 7381 } 7382 7383 private Container item(int position) { 7384 if (position < 0 || position >= getCount()) { 7385 return null; 7386 } 7387 return (Container) getItem(position); 7388 } 7389 7390 @Override 7391 public long getItemId(int position) { 7392 Container item = item(position); 7393 if (item == null) { 7394 return -1; 7395 } 7396 return item.mId; 7397 } 7398 7399 @Override 7400 public boolean areAllItemsEnabled() { 7401 return false; 7402 } 7403 7404 @Override 7405 public boolean isEnabled(int position) { 7406 Container item = item(position); 7407 if (item == null) { 7408 return false; 7409 } 7410 return Container.OPTION_ENABLED == item.mEnabled; 7411 } 7412 } 7413 7414 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7415 mMultiple = true; 7416 mSelectedArray = selected; 7417 7418 int length = array.length; 7419 mContainers = new Container[length]; 7420 for (int i = 0; i < length; i++) { 7421 mContainers[i] = new Container(); 7422 mContainers[i].mString = array[i]; 7423 mContainers[i].mEnabled = enabled[i]; 7424 mContainers[i].mId = i; 7425 } 7426 } 7427 7428 private InvokeListBox(String[] array, int[] enabled, int selection) { 7429 mSelection = selection; 7430 mMultiple = false; 7431 7432 int length = array.length; 7433 mContainers = new Container[length]; 7434 for (int i = 0; i < length; i++) { 7435 mContainers[i] = new Container(); 7436 mContainers[i].mString = array[i]; 7437 mContainers[i].mEnabled = enabled[i]; 7438 mContainers[i].mId = i; 7439 } 7440 } 7441 7442 /* 7443 * Whenever the data set changes due to filtering, this class ensures 7444 * that the checked item remains checked. 7445 */ 7446 private class SingleDataSetObserver extends DataSetObserver { 7447 private long mCheckedId; 7448 private ListView mListView; 7449 private Adapter mAdapter; 7450 7451 /* 7452 * Create a new observer. 7453 * @param id The ID of the item to keep checked. 7454 * @param l ListView for getting and clearing the checked states 7455 * @param a Adapter for getting the IDs 7456 */ 7457 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7458 mCheckedId = id; 7459 mListView = l; 7460 mAdapter = a; 7461 } 7462 7463 public void onChanged() { 7464 // The filter may have changed which item is checked. Find the 7465 // item that the ListView thinks is checked. 7466 int position = mListView.getCheckedItemPosition(); 7467 long id = mAdapter.getItemId(position); 7468 if (mCheckedId != id) { 7469 // Clear the ListView's idea of the checked item, since 7470 // it is incorrect 7471 mListView.clearChoices(); 7472 // Search for mCheckedId. If it is in the filtered list, 7473 // mark it as checked 7474 int count = mAdapter.getCount(); 7475 for (int i = 0; i < count; i++) { 7476 if (mAdapter.getItemId(i) == mCheckedId) { 7477 mListView.setItemChecked(i, true); 7478 break; 7479 } 7480 } 7481 } 7482 } 7483 7484 public void onInvalidate() {} 7485 } 7486 7487 public void run() { 7488 final ListView listView = (ListView) LayoutInflater.from(mContext) 7489 .inflate(com.android.internal.R.layout.select_dialog, null); 7490 final MyArrayListAdapter adapter = new 7491 MyArrayListAdapter(mContext, mContainers, mMultiple); 7492 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7493 .setView(listView).setCancelable(true) 7494 .setInverseBackgroundForced(true); 7495 7496 if (mMultiple) { 7497 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7498 public void onClick(DialogInterface dialog, int which) { 7499 mWebViewCore.sendMessage( 7500 EventHub.LISTBOX_CHOICES, 7501 adapter.getCount(), 0, 7502 listView.getCheckedItemPositions()); 7503 }}); 7504 b.setNegativeButton(android.R.string.cancel, 7505 new DialogInterface.OnClickListener() { 7506 public void onClick(DialogInterface dialog, int which) { 7507 mWebViewCore.sendMessage( 7508 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7509 }}); 7510 } 7511 mListBoxDialog = b.create(); 7512 listView.setAdapter(adapter); 7513 listView.setFocusableInTouchMode(true); 7514 // There is a bug (1250103) where the checks in a ListView with 7515 // multiple items selected are associated with the positions, not 7516 // the ids, so the items do not properly retain their checks when 7517 // filtered. Do not allow filtering on multiple lists until 7518 // that bug is fixed. 7519 7520 listView.setTextFilterEnabled(!mMultiple); 7521 if (mMultiple) { 7522 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7523 int length = mSelectedArray.length; 7524 for (int i = 0; i < length; i++) { 7525 listView.setItemChecked(mSelectedArray[i], true); 7526 } 7527 } else { 7528 listView.setOnItemClickListener(new OnItemClickListener() { 7529 public void onItemClick(AdapterView parent, View v, 7530 int position, long id) { 7531 // Rather than sending the message right away, send it 7532 // after the page regains focus. 7533 mListBoxMessage = Message.obtain(null, 7534 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 7535 mListBoxDialog.dismiss(); 7536 mListBoxDialog = null; 7537 } 7538 }); 7539 if (mSelection != -1) { 7540 listView.setSelection(mSelection); 7541 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7542 listView.setItemChecked(mSelection, true); 7543 DataSetObserver observer = new SingleDataSetObserver( 7544 adapter.getItemId(mSelection), listView, adapter); 7545 adapter.registerDataSetObserver(observer); 7546 } 7547 } 7548 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7549 public void onCancel(DialogInterface dialog) { 7550 mWebViewCore.sendMessage( 7551 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7552 mListBoxDialog = null; 7553 } 7554 }); 7555 mListBoxDialog.show(); 7556 } 7557 } 7558 7559 private Message mListBoxMessage; 7560 7561 /* 7562 * Request a dropdown menu for a listbox with multiple selection. 7563 * 7564 * @param array Labels for the listbox. 7565 * @param enabledArray State for each element in the list. See static 7566 * integers in Container class. 7567 * @param selectedArray Which positions are initally selected. 7568 */ 7569 void requestListBox(String[] array, int[] enabledArray, int[] 7570 selectedArray) { 7571 mPrivateHandler.post( 7572 new InvokeListBox(array, enabledArray, selectedArray)); 7573 } 7574 7575 /* 7576 * Request a dropdown menu for a listbox with single selection or a single 7577 * <select> element. 7578 * 7579 * @param array Labels for the listbox. 7580 * @param enabledArray State for each element in the list. See static 7581 * integers in Container class. 7582 * @param selection Which position is initally selected. 7583 */ 7584 void requestListBox(String[] array, int[] enabledArray, int selection) { 7585 mPrivateHandler.post( 7586 new InvokeListBox(array, enabledArray, selection)); 7587 } 7588 7589 // called by JNI 7590 private void sendMoveFocus(int frame, int node) { 7591 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7592 new WebViewCore.CursorData(frame, node, 0, 0)); 7593 } 7594 7595 // called by JNI 7596 private void sendMoveMouse(int frame, int node, int x, int y) { 7597 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7598 new WebViewCore.CursorData(frame, node, x, y)); 7599 } 7600 7601 /* 7602 * Send a mouse move event to the webcore thread. 7603 * 7604 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7605 * which wants key events, but it is not the focus. This 7606 * will make the visual appear as though nothing is in 7607 * focus. Remove the WebTextView, if present, and stop 7608 * drawing the blinking caret. 7609 * called by JNI 7610 */ 7611 private void sendMoveMouseIfLatest(boolean removeFocus) { 7612 if (removeFocus) { 7613 clearTextEntry(); 7614 } 7615 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7616 cursorData()); 7617 } 7618 7619 // called by JNI 7620 private void sendMotionUp(int touchGeneration, 7621 int frame, int node, int x, int y) { 7622 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7623 touchUpData.mMoveGeneration = touchGeneration; 7624 touchUpData.mFrame = frame; 7625 touchUpData.mNode = node; 7626 touchUpData.mX = x; 7627 touchUpData.mY = y; 7628 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7629 } 7630 7631 7632 private int getScaledMaxXScroll() { 7633 int width; 7634 if (mHeightCanMeasure == false) { 7635 width = getViewWidth() / 4; 7636 } else { 7637 Rect visRect = new Rect(); 7638 calcOurVisibleRect(visRect); 7639 width = visRect.width() / 2; 7640 } 7641 // FIXME the divisor should be retrieved from somewhere 7642 return viewToContentX(width); 7643 } 7644 7645 private int getScaledMaxYScroll() { 7646 int height; 7647 if (mHeightCanMeasure == false) { 7648 height = getViewHeight() / 4; 7649 } else { 7650 Rect visRect = new Rect(); 7651 calcOurVisibleRect(visRect); 7652 height = visRect.height() / 2; 7653 } 7654 // FIXME the divisor should be retrieved from somewhere 7655 // the closest thing today is hard-coded into ScrollView.java 7656 // (from ScrollView.java, line 363) int maxJump = height/2; 7657 return Math.round(height * mZoomManager.getInvScale()); 7658 } 7659 7660 /** 7661 * Called by JNI to invalidate view 7662 */ 7663 private void viewInvalidate() { 7664 invalidate(); 7665 } 7666 7667 /** 7668 * Pass the key directly to the page. This assumes that 7669 * nativePageShouldHandleShiftAndArrows() returned true. 7670 */ 7671 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 7672 int keyEventAction; 7673 int eventHubAction; 7674 if (down) { 7675 keyEventAction = KeyEvent.ACTION_DOWN; 7676 eventHubAction = EventHub.KEY_DOWN; 7677 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7678 } else { 7679 keyEventAction = KeyEvent.ACTION_UP; 7680 eventHubAction = EventHub.KEY_UP; 7681 } 7682 7683 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7684 1, (metaState & KeyEvent.META_SHIFT_ON) 7685 | (metaState & KeyEvent.META_ALT_ON) 7686 | (metaState & KeyEvent.META_SYM_ON) 7687 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 7688 mWebViewCore.sendMessage(eventHubAction, event); 7689 } 7690 7691 // return true if the key was handled 7692 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7693 long time) { 7694 if (mNativeClass == 0) { 7695 return false; 7696 } 7697 mInitialHitTestResult = null; 7698 mLastCursorTime = time; 7699 mLastCursorBounds = nativeGetCursorRingBounds(); 7700 boolean keyHandled 7701 = nativeMoveCursor(keyCode, count, noScroll) == false; 7702 if (DebugFlags.WEB_VIEW) { 7703 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7704 + " mLastCursorTime=" + mLastCursorTime 7705 + " handled=" + keyHandled); 7706 } 7707 if (keyHandled == false || mHeightCanMeasure == false) { 7708 return keyHandled; 7709 } 7710 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7711 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7712 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7713 Rect visRect = new Rect(); 7714 calcOurVisibleRect(visRect); 7715 Rect outset = new Rect(visRect); 7716 int maxXScroll = visRect.width() / 2; 7717 int maxYScroll = visRect.height() / 2; 7718 outset.inset(-maxXScroll, -maxYScroll); 7719 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7720 return keyHandled; 7721 } 7722 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7723 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7724 maxXScroll); 7725 if (maxH > 0) { 7726 pinScrollBy(maxH, 0, true, 0); 7727 } else { 7728 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7729 -maxXScroll); 7730 if (maxH < 0) { 7731 pinScrollBy(maxH, 0, true, 0); 7732 } 7733 } 7734 if (mLastCursorBounds.isEmpty()) return keyHandled; 7735 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7736 return keyHandled; 7737 } 7738 if (DebugFlags.WEB_VIEW) { 7739 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7740 + contentCursorRingBounds); 7741 } 7742 requestRectangleOnScreen(viewCursorRingBounds); 7743 mUserScroll = true; 7744 return keyHandled; 7745 } 7746 7747 /** 7748 * @return If the page should receive Shift and arrows. 7749 */ 7750 private boolean pageShouldHandleShiftAndArrows() { 7751 // TODO: Maybe the injected script should announce its presence in 7752 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 7753 // will check that as one of the conditions it looks for 7754 return (nativePageShouldHandleShiftAndArrows() || mAccessibilityScriptInjected); 7755 } 7756 7757 /** 7758 * Set the background color. It's white by default. Pass 7759 * zero to make the view transparent. 7760 * @param color the ARGB color described by Color.java 7761 */ 7762 public void setBackgroundColor(int color) { 7763 mBackgroundColor = color; 7764 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7765 } 7766 7767 public void debugDump() { 7768 nativeDebugDump(); 7769 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7770 } 7771 7772 /** 7773 * Draw the HTML page into the specified canvas. This call ignores any 7774 * view-specific zoom, scroll offset, or other changes. It does not draw 7775 * any view-specific chrome, such as progress or URL bars. 7776 * 7777 * @hide only needs to be accessible to Browser and testing 7778 */ 7779 public void drawPage(Canvas canvas) { 7780 nativeDraw(canvas, 0, 0, false); 7781 } 7782 7783 /** 7784 * Set the time to wait between passing touches to WebCore. See also the 7785 * TOUCH_SENT_INTERVAL member for further discussion. 7786 * 7787 * @hide This is only used by the DRT test application. 7788 */ 7789 public void setTouchInterval(int interval) { 7790 mCurrentTouchInterval = interval; 7791 } 7792 7793 /** 7794 * Toggle whether multi touch events should be sent to webkit 7795 * no matter if UI wants to handle it first. 7796 * 7797 * @hide This is only used by the webkit layout test. 7798 */ 7799 public void setDeferMultiTouch(boolean value) { 7800 mDeferMultitouch = value; 7801 Log.v(LOGTAG, "set mDeferMultitouch to " + value); 7802 } 7803 7804 /** 7805 * Update our cache with updatedText. 7806 * @param updatedText The new text to put in our cache. 7807 */ 7808 /* package */ void updateCachedTextfield(String updatedText) { 7809 // Also place our generation number so that when we look at the cache 7810 // we recognize that it is up to date. 7811 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7812 } 7813 7814 /*package*/ void autoFillForm(int autoFillQueryId) { 7815 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 7816 } 7817 7818 /* package */ ViewManager getViewManager() { 7819 return mViewManager; 7820 } 7821 7822 private native int nativeCacheHitFramePointer(); 7823 private native Rect nativeCacheHitNodeBounds(); 7824 private native int nativeCacheHitNodePointer(); 7825 /* package */ native void nativeClearCursor(); 7826 private native void nativeCreate(int ptr); 7827 private native int nativeCursorFramePointer(); 7828 private native Rect nativeCursorNodeBounds(); 7829 private native int nativeCursorNodePointer(); 7830 /* package */ native boolean nativeCursorMatchesFocus(); 7831 private native boolean nativeCursorIntersects(Rect visibleRect); 7832 private native boolean nativeCursorIsAnchor(); 7833 private native boolean nativeCursorIsTextInput(); 7834 private native Point nativeCursorPosition(); 7835 private native String nativeCursorText(); 7836 /** 7837 * Returns true if the native cursor node says it wants to handle key events 7838 * (ala plugins). This can only be called if mNativeClass is non-zero! 7839 */ 7840 private native boolean nativeCursorWantsKeyEvents(); 7841 private native void nativeDebugDump(); 7842 private native void nativeDestroy(); 7843 7844 /** 7845 * Draw the picture set with a background color and extra. If 7846 * "splitIfNeeded" is true and the return value is not 0, the return value 7847 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 7848 * native allocation can be freed. 7849 */ 7850 private native int nativeDraw(Canvas canvas, int color, int extra, 7851 boolean splitIfNeeded); 7852 private native void nativeDumpDisplayTree(String urlOrNull); 7853 private native boolean nativeEvaluateLayersAnimations(); 7854 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 7855 private native void nativeExtendSelection(int x, int y); 7856 private native int nativeFindAll(String findLower, String findUpper, 7857 boolean sameAsLastSearch); 7858 private native void nativeFindNext(boolean forward); 7859 /* package */ native int nativeFocusCandidateFramePointer(); 7860 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7861 /* package */ native boolean nativeFocusCandidateIsPassword(); 7862 private native boolean nativeFocusCandidateIsRtlText(); 7863 private native boolean nativeFocusCandidateIsTextInput(); 7864 /* package */ native int nativeFocusCandidateMaxLength(); 7865 /* package */ native String nativeFocusCandidateName(); 7866 private native Rect nativeFocusCandidateNodeBounds(); 7867 /** 7868 * @return A Rect with left, top, right, bottom set to the corresponding 7869 * padding values in the focus candidate, if it is a textfield/textarea with 7870 * a style. Otherwise return null. This is not actually a rectangle; Rect 7871 * is being used to pass four integers. 7872 */ 7873 private native Rect nativeFocusCandidatePaddingRect(); 7874 /* package */ native int nativeFocusCandidatePointer(); 7875 private native String nativeFocusCandidateText(); 7876 /* package */ native float nativeFocusCandidateTextSize(); 7877 /* package */ native int nativeFocusCandidateLineHeight(); 7878 /** 7879 * Returns an integer corresponding to WebView.cpp::type. 7880 * See WebTextView.setType() 7881 */ 7882 private native int nativeFocusCandidateType(); 7883 private native boolean nativeFocusIsPlugin(); 7884 private native Rect nativeFocusNodeBounds(); 7885 /* package */ native int nativeFocusNodePointer(); 7886 private native Rect nativeGetCursorRingBounds(); 7887 private native String nativeGetSelection(); 7888 private native boolean nativeHasCursorNode(); 7889 private native boolean nativeHasFocusNode(); 7890 private native void nativeHideCursor(); 7891 private native boolean nativeHitSelection(int x, int y); 7892 private native String nativeImageURI(int x, int y); 7893 private native void nativeInstrumentReport(); 7894 private native Rect nativeLayerBounds(int layer); 7895 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7896 // return true if the page has been scrolled 7897 private native boolean nativeMotionUp(int x, int y, int slop); 7898 // returns false if it handled the key 7899 private native boolean nativeMoveCursor(int keyCode, int count, 7900 boolean noScroll); 7901 private native int nativeMoveGeneration(); 7902 private native void nativeMoveSelection(int x, int y); 7903 /** 7904 * @return true if the page should get the shift and arrow keys, rather 7905 * than select text/navigation. 7906 * 7907 * If the focus is a plugin, or if the focus and cursor match and are 7908 * a contentEditable element, then the page should handle these keys. 7909 */ 7910 private native boolean nativePageShouldHandleShiftAndArrows(); 7911 private native boolean nativePointInNavCache(int x, int y, int slop); 7912 // Like many other of our native methods, you must make sure that 7913 // mNativeClass is not null before calling this method. 7914 private native void nativeRecordButtons(boolean focused, 7915 boolean pressed, boolean invalidate); 7916 private native void nativeResetSelection(); 7917 private native void nativeSelectAll(); 7918 private native void nativeSelectBestAt(Rect rect); 7919 private native int nativeSelectionX(); 7920 private native int nativeSelectionY(); 7921 private native int nativeFindIndex(); 7922 private native void nativeSetExtendSelection(); 7923 private native void nativeSetFindIsEmpty(); 7924 private native void nativeSetFindIsUp(boolean isUp); 7925 private native void nativeSetHeightCanMeasure(boolean measure); 7926 private native void nativeSetBaseLayer(int layer, Rect invalRect); 7927 private native void nativeShowCursorTimed(); 7928 private native void nativeReplaceBaseContent(int content); 7929 private native void nativeCopyBaseContentToPicture(Picture pict); 7930 private native boolean nativeHasContent(); 7931 private native void nativeSetSelectionPointer(boolean set, 7932 float scale, int x, int y); 7933 private native boolean nativeStartSelection(int x, int y); 7934 private native Rect nativeSubtractLayers(Rect content); 7935 private native int nativeTextGeneration(); 7936 // Never call this version except by updateCachedTextfield(String) - 7937 // we always want to pass in our generation number. 7938 private native void nativeUpdateCachedTextfield(String updatedText, 7939 int generation); 7940 private native boolean nativeWordSelection(int x, int y); 7941 // return NO_LEFTEDGE means failure. 7942 static final int NO_LEFTEDGE = -1; 7943 native int nativeGetBlockLeftEdge(int x, int y, float scale); 7944 7945 // Returns a pointer to the scrollable LayerAndroid at the given point. 7946 private native int nativeScrollableLayer(int x, int y, Rect scrollRect); 7947 private native boolean nativeScrollLayer(int layer, int dx, int dy); 7948} 7949