WebView.java revision 48fc9097cc5fad7e57342a1ecf584394e089c7e3
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.BroadcastReceiver; 22import android.content.ClipboardManager; 23import android.content.Context; 24import android.content.DialogInterface; 25import android.content.DialogInterface.OnCancelListener; 26import android.content.Intent; 27import android.content.IntentFilter; 28import android.content.pm.PackageInfo; 29import android.content.pm.PackageManager; 30import android.content.res.Configuration; 31import android.database.DataSetObserver; 32import android.graphics.Bitmap; 33import android.graphics.BitmapFactory; 34import android.graphics.BitmapShader; 35import android.graphics.Canvas; 36import android.graphics.Color; 37import android.graphics.CornerPathEffect; 38import android.graphics.DrawFilter; 39import android.graphics.Paint; 40import android.graphics.PaintFlagsDrawFilter; 41import android.graphics.Picture; 42import android.graphics.Point; 43import android.graphics.Rect; 44import android.graphics.RectF; 45import android.graphics.Region; 46import android.graphics.Shader; 47import android.graphics.drawable.Drawable; 48import android.net.Proxy; 49import android.net.ProxyProperties; 50import android.net.Uri; 51import android.net.http.SslCertificate; 52import android.os.AsyncTask; 53import android.os.Bundle; 54import android.os.Handler; 55import android.os.Message; 56import android.provider.Settings; 57import android.speech.tts.TextToSpeech; 58import android.text.Selection; 59import android.text.Spannable; 60import android.util.AttributeSet; 61import android.util.EventLog; 62import android.util.Log; 63import android.view.Gravity; 64import android.view.HardwareCanvas; 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.LinearLayout; 92import android.widget.ListView; 93import android.widget.OverScroller; 94import android.widget.Toast; 95 96import java.io.File; 97import java.io.FileInputStream; 98import java.io.FileNotFoundException; 99import java.io.FileOutputStream; 100import java.net.URLDecoder; 101import java.util.ArrayList; 102import java.util.HashMap; 103import java.util.HashSet; 104import java.util.List; 105import java.util.Map; 106import java.util.Set; 107import java.util.regex.Matcher; 108import java.util.regex.Pattern; 109 110import junit.framework.Assert; 111 112/** 113 * <p>A View that displays web pages. This class is the basis upon which you 114 * can roll your own web browser or simply display some online content within your Activity. 115 * It uses the WebKit rendering engine to display 116 * web pages and includes methods to navigate forward and backward 117 * through a history, zoom in and out, perform text searches and more.</p> 118 * <p>To enable the built-in zoom, set 119 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 120 * (introduced in API version 3). 121 * <p>Note that, in order for your Activity to access the Internet and load web pages 122 * in a WebView, you must add the {@code INTERNET} permissions to your 123 * Android Manifest file:</p> 124 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 125 * 126 * <p>This must be a child of the <a 127 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 128 * element.</p> 129 * 130 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 131 * tutorial</a>.</p> 132 * 133 * <h3>Basic usage</h3> 134 * 135 * <p>By default, a WebView provides no browser-like widgets, does not 136 * enable JavaScript and web page errors are ignored. If your goal is only 137 * to display some HTML as a part of your UI, this is probably fine; 138 * the user won't need to interact with the web page beyond reading 139 * it, and the web page won't need to interact with the user. If you 140 * actually want a full-blown web browser, then you probably want to 141 * invoke the Browser application with a URL Intent rather than show it 142 * with a WebView. For example: 143 * <pre> 144 * Uri uri = Uri.parse("http://www.example.com"); 145 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 146 * startActivity(intent); 147 * </pre> 148 * <p>See {@link android.content.Intent} for more information.</p> 149 * 150 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 151 * or set the entire Activity window as a WebView during {@link 152 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 153 * <pre class="prettyprint"> 154 * WebView webview = new WebView(this); 155 * setContentView(webview); 156 * </pre> 157 * 158 * <p>Then load the desired web page:</p> 159 * <pre> 160 * // Simplest usage: note that an exception will NOT be thrown 161 * // if there is an error loading this page (see below). 162 * webview.loadUrl("http://slashdot.org/"); 163 * 164 * // OR, you can also load from an HTML string: 165 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 166 * webview.loadData(summary, "text/html", "utf-8"); 167 * // ... although note that there are restrictions on what this HTML can do. 168 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 169 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 170 * </pre> 171 * 172 * <p>A WebView has several customization points where you can add your 173 * own behavior. These are:</p> 174 * 175 * <ul> 176 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 177 * This class is called when something that might impact a 178 * browser UI happens, for instance, progress updates and 179 * JavaScript alerts are sent here (see <a 180 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 181 * </li> 182 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 183 * It will be called when things happen that impact the 184 * rendering of the content, eg, errors or form submissions. You 185 * can also intercept URL loading here (via {@link 186 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 187 * shouldOverrideUrlLoading()}).</li> 188 * <li>Modifying the {@link android.webkit.WebSettings}, such as 189 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 190 * setJavaScriptEnabled()}. </li> 191 * <li>Adding JavaScript-to-Java interfaces with the {@link 192 * android.webkit.WebView#addJavascriptInterface} method. 193 * This lets you bind Java objects into the WebView so they can be 194 * controlled from the web pages JavaScript.</li> 195 * </ul> 196 * 197 * <p>Here's a more complicated example, showing error handling, 198 * settings, and progress notification:</p> 199 * 200 * <pre class="prettyprint"> 201 * // Let's display the progress in the activity title bar, like the 202 * // browser app does. 203 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 204 * 205 * webview.getSettings().setJavaScriptEnabled(true); 206 * 207 * final Activity activity = this; 208 * webview.setWebChromeClient(new WebChromeClient() { 209 * public void onProgressChanged(WebView view, int progress) { 210 * // Activities and WebViews measure progress with different scales. 211 * // The progress meter will automatically disappear when we reach 100% 212 * activity.setProgress(progress * 1000); 213 * } 214 * }); 215 * webview.setWebViewClient(new WebViewClient() { 216 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 217 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 218 * } 219 * }); 220 * 221 * webview.loadUrl("http://slashdot.org/"); 222 * </pre> 223 * 224 * <h3>Cookie and window management</h3> 225 * 226 * <p>For obvious security reasons, your application has its own 227 * cache, cookie store etc.—it does not share the Browser 228 * application's data. Cookies are managed on a separate thread, so 229 * operations like index building don't block the UI 230 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 231 * if you want to use cookies in your application. 232 * </p> 233 * 234 * <p>By default, requests by the HTML to open new windows are 235 * ignored. This is true whether they be opened by JavaScript or by 236 * the target attribute on a link. You can customize your 237 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 238 * and render them in whatever manner you want.</p> 239 * 240 * <p>The standard behavior for an Activity is to be destroyed and 241 * recreated when the device orientation or any other configuration changes. This will cause 242 * the WebView to reload the current page. If you don't want that, you 243 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 244 * changes, and then just leave the WebView alone. It'll automatically 245 * re-orient itself as appropriate. Read <a 246 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 247 * more information about how to handle configuration changes during runtime.</p> 248 * 249 * 250 * <h3>Building web pages to support different screen densities</h3> 251 * 252 * <p>The screen density of a device is based on the screen resolution. A screen with low density 253 * has fewer available pixels per inch, where a screen with high density 254 * has more — sometimes significantly more — pixels per inch. The density of a 255 * screen is important because, other things being equal, a UI element (such as a button) whose 256 * height and width are defined in terms of screen pixels will appear larger on the lower density 257 * screen and smaller on the higher density screen. 258 * For simplicity, Android collapses all actual screen densities into three generalized densities: 259 * high, medium, and low.</p> 260 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 261 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 262 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 263 * are bigger). 264 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 265 * you (as a web developer) target screens with different screen densities.</p> 266 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 267 * <ul> 268 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 269 * default scaling factor used for the current device. For example, if the value of {@code 270 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 271 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 272 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 273 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 274 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 275 * (discussed below), then you can stop this default scaling behavior.</li> 276 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 277 * densities for which this style sheet is to be used. The corresponding value should be either 278 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 279 * density, or high density screens, respectively. For example: 280 * <pre> 281 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 282 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 283 * which is the high density pixel ratio.</p> 284 * </li> 285 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 286 * this to specify the target density for which the web page is designed, using the following 287 * values: 288 * <ul> 289 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 290 * occurs.</li> 291 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 292 * as appropriate.</li> 293 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 294 * low density screens scale down. This is also the default behavior.</li> 295 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 296 * as appropriate.</li> 297 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 298 * values are 70-400).</li> 299 * </ul> 300 * <p>Here's an example meta tag to specify the target density:</p> 301 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 302 * </ul> 303 * <p>If you want to modify your web page for different densities, by using the {@code 304 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 305 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 306 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 307 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 308 * 309 * 310 */ 311@Widget 312public class WebView extends AbsoluteLayout 313 implements ViewTreeObserver.OnGlobalFocusChangeListener, 314 ViewGroup.OnHierarchyChangeListener { 315 316 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 317 public void onGlobalLayout() { 318 if (isShown()) { 319 setGLRectViewport(); 320 } 321 } 322 } 323 324 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 325 public void onScrollChanged() { 326 if (isShown()) { 327 setGLRectViewport(); 328 } 329 } 330 } 331 332 // The listener to capture global layout change event. 333 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 334 335 // The listener to capture scroll event. 336 private InnerScrollChangedListener mScrollChangedListener = null; 337 338 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 339 // the screen all-the-time. Good for profiling our drawing code 340 static private final boolean AUTO_REDRAW_HACK = false; 341 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 342 private boolean mAutoRedraw; 343 344 // Reference to the AlertDialog displayed by InvokeListBox. 345 // It's used to dismiss the dialog in destroy if not done before. 346 private AlertDialog mListBoxDialog = null; 347 348 static final String LOGTAG = "webview"; 349 350 private ZoomManager mZoomManager; 351 352 private Rect mGLRectViewport = new Rect(); 353 private boolean mGLViewportEmpty = false; 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 in pixels. 409 * Use integer to prevent loss of dragging delta calculation accuracy; 410 * which was done in float and converted to integer, and resulted in gradual 411 * and compounding touch position and view dragging mismatch. 412 */ 413 private int mLastTouchX; 414 private int mLastTouchY; 415 416 /** 417 * Time of the last touch event. 418 */ 419 private long mLastTouchTime; 420 421 /** 422 * Time of the last time sending touch event to WebViewCore 423 */ 424 private long mLastSentTouchTime; 425 426 /** 427 * The minimum elapsed time before sending another ACTION_MOVE event to 428 * WebViewCore. This really should be tuned for each type of the devices. 429 * For example in Google Map api test case, it takes Dream device at least 430 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 431 * triggering the layout and drawing the picture. While the same process 432 * takes 60+ms on the current high speed device. If we make 433 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 434 * to WebViewCore queue and the real layout and draw events will be pushed 435 * to further, which slows down the refresh rate. Choose 50 to favor the 436 * current high speed devices. For Dream like devices, 100 is a better 437 * choice. Maybe make this in the buildspec later. 438 * (Update 12/14/2010: changed to 0 since current device should be able to 439 * handle the raw events and Map team voted to have the raw events too. 440 */ 441 private static final int TOUCH_SENT_INTERVAL = 0; 442 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 443 444 /** 445 * Helper class to get velocity for fling 446 */ 447 VelocityTracker mVelocityTracker; 448 private int mMaximumFling; 449 private float mLastVelocity; 450 private float mLastVelX; 451 private float mLastVelY; 452 453 // The id of the native layer being scrolled. 454 private int mScrollingLayer; 455 private Rect mScrollingLayerRect = new Rect(); 456 457 // only trigger accelerated fling if the new velocity is at least 458 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 459 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 460 461 /** 462 * Touch mode 463 */ 464 private int mTouchMode = TOUCH_DONE_MODE; 465 private static final int TOUCH_INIT_MODE = 1; 466 private static final int TOUCH_DRAG_START_MODE = 2; 467 private static final int TOUCH_DRAG_MODE = 3; 468 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 469 private static final int TOUCH_SHORTPRESS_MODE = 5; 470 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 471 private static final int TOUCH_DONE_MODE = 7; 472 private static final int TOUCH_PINCH_DRAG = 8; 473 private static final int TOUCH_DRAG_LAYER_MODE = 9; 474 475 // Whether to forward the touch events to WebCore 476 // Can only be set by WebKit via JNI. 477 private boolean mForwardTouchEvents = false; 478 479 // Whether to prevent default during touch. The initial value depends on 480 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 481 // for touch down. Otherwise UI will wait for the answer of the first 482 // confirmed move before taking over the control. 483 private static final int PREVENT_DEFAULT_NO = 0; 484 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 485 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 486 private static final int PREVENT_DEFAULT_YES = 3; 487 private static final int PREVENT_DEFAULT_IGNORE = 4; 488 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 489 490 // true when the touch movement exceeds the slop 491 private boolean mConfirmMove; 492 493 // if true, touch events will be first processed by WebCore, if prevent 494 // default is not set, the UI will continue handle them. 495 private boolean mDeferTouchProcess; 496 497 // Currently, multi-touch events are sent to WebKit first then back to 498 // WebView while single-touch events are handled in WebView first. 499 // So there is a chance that a single-touch move event is handled in WebView 500 // before multi-touch events are finished. 501 // if mIsHandlingMultiTouch is true, which means multi-touch event handling 502 // is not finished, then any single-touch move event will be skipped. 503 // FIXME: send single-touch events to WebKit first then back to WebView. 504 private boolean mIsHandlingMultiTouch = false; 505 506 // to avoid interfering with the current touch events, track them 507 // separately. Currently no snapping or fling in the deferred process mode 508 private int mDeferTouchMode = TOUCH_DONE_MODE; 509 private float mLastDeferTouchX; 510 private float mLastDeferTouchY; 511 512 // To keep track of whether the current drag was initiated by a WebTextView, 513 // so that we know not to hide the cursor 514 boolean mDragFromTextInput; 515 516 // Whether or not to draw the cursor ring. 517 private boolean mDrawCursorRing = true; 518 519 // true if onPause has been called (and not onResume) 520 private boolean mIsPaused; 521 522 private HitTestResult mInitialHitTestResult; 523 524 /** 525 * Customizable constant 526 */ 527 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 528 private int mTouchSlopSquare; 529 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 530 private int mDoubleTapSlopSquare; 531 // pre-computed density adjusted navigation slop 532 private int mNavSlop; 533 // This should be ViewConfiguration.getTapTimeout() 534 // But system time out is 100ms, which is too short for the browser. 535 // In the browser, if it switches out of tap too soon, jump tap won't work. 536 private static final int TAP_TIMEOUT = 200; 537 // This should be ViewConfiguration.getLongPressTimeout() 538 // But system time out is 500ms, which is too short for the browser. 539 // With a short timeout, it's difficult to treat trigger a short press. 540 private static final int LONG_PRESS_TIMEOUT = 1000; 541 // needed to avoid flinging after a pause of no movement 542 private static final int MIN_FLING_TIME = 250; 543 // draw unfiltered after drag is held without movement 544 private static final int MOTIONLESS_TIME = 100; 545 // The amount of content to overlap between two screens when going through 546 // pages with the space bar, in pixels. 547 private static final int PAGE_SCROLL_OVERLAP = 24; 548 549 /** 550 * These prevent calling requestLayout if either dimension is fixed. This 551 * depends on the layout parameters and the measure specs. 552 */ 553 boolean mWidthCanMeasure; 554 boolean mHeightCanMeasure; 555 556 // Remember the last dimensions we sent to the native side so we can avoid 557 // sending the same dimensions more than once. 558 int mLastWidthSent; 559 int mLastHeightSent; 560 // Since view height sent to webkit could be fixed to avoid relayout, this 561 // value records the last sent actual view height. 562 int mLastActualHeightSent; 563 564 private int mContentWidth; // cache of value from WebViewCore 565 private int mContentHeight; // cache of value from WebViewCore 566 567 // Need to have the separate control for horizontal and vertical scrollbar 568 // style than the View's single scrollbar style 569 private boolean mOverlayHorizontalScrollbar = true; 570 private boolean mOverlayVerticalScrollbar = false; 571 572 // our standard speed. this way small distances will be traversed in less 573 // time than large distances, but we cap the duration, so that very large 574 // distances won't take too long to get there. 575 private static final int STD_SPEED = 480; // pixels per second 576 // time for the longest scroll animation 577 private static final int MAX_DURATION = 750; // milliseconds 578 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 579 580 // Used by OverScrollGlow 581 OverScroller mScroller; 582 583 private boolean mInOverScrollMode = false; 584 private static Paint mOverScrollBackground; 585 private static Paint mOverScrollBorder; 586 587 private boolean mWrapContent; 588 private static final int MOTIONLESS_FALSE = 0; 589 private static final int MOTIONLESS_PENDING = 1; 590 private static final int MOTIONLESS_TRUE = 2; 591 private static final int MOTIONLESS_IGNORE = 3; 592 private int mHeldMotionless; 593 594 // An instance for injecting accessibility in WebViews with disabled 595 // JavaScript or ones for which no accessibility script exists 596 private AccessibilityInjector mAccessibilityInjector; 597 598 // flag indicating if accessibility script is injected so we 599 // know to handle Shift and arrows natively first 600 private boolean mAccessibilityScriptInjected; 601 602 // the color used to highlight the touch rectangles 603 private static final int mHightlightColor = 0x33000000; 604 // the round corner for the highlight path 605 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 606 // the region indicating where the user touched on the screen 607 private Region mTouchHighlightRegion = new Region(); 608 // the paint for the touch highlight 609 private Paint mTouchHightlightPaint; 610 // debug only 611 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 612 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 613 private Paint mTouchCrossHairColor; 614 private int mTouchHighlightX; 615 private int mTouchHighlightY; 616 617 /* 618 * Private message ids 619 */ 620 private static final int REMEMBER_PASSWORD = 1; 621 private static final int NEVER_REMEMBER_PASSWORD = 2; 622 private static final int SWITCH_TO_SHORTPRESS = 3; 623 private static final int SWITCH_TO_LONGPRESS = 4; 624 private static final int RELEASE_SINGLE_TAP = 5; 625 private static final int REQUEST_FORM_DATA = 6; 626 private static final int RESUME_WEBCORE_PRIORITY = 7; 627 private static final int DRAG_HELD_MOTIONLESS = 8; 628 private static final int AWAKEN_SCROLL_BARS = 9; 629 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 630 private static final int SCROLL_SELECT_TEXT = 11; 631 632 633 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 634 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 635 636 /* 637 * Package message ids 638 */ 639 //! arg1=x, arg2=y 640 static final int SCROLL_TO_MSG_ID = 101; 641 static final int SCROLL_BY_MSG_ID = 102; 642 //! arg1=x, arg2=y 643 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 644 //! arg1=x, arg2=y 645 static final int SYNC_SCROLL_TO_MSG_ID = 104; 646 static final int NEW_PICTURE_MSG_ID = 105; 647 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 648 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 649 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 650 static final int UPDATE_ZOOM_RANGE = 109; 651 static final int UNHANDLED_NAV_KEY = 110; 652 static final int CLEAR_TEXT_ENTRY = 111; 653 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 654 static final int SHOW_RECT_MSG_ID = 113; 655 static final int LONG_PRESS_CENTER = 114; 656 static final int PREVENT_TOUCH_ID = 115; 657 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 658 // obj=Rect in doc coordinates 659 static final int INVAL_RECT_MSG_ID = 117; 660 static final int REQUEST_KEYBOARD = 118; 661 static final int DO_MOTION_UP = 119; 662 static final int SHOW_FULLSCREEN = 120; 663 static final int HIDE_FULLSCREEN = 121; 664 static final int DOM_FOCUS_CHANGED = 122; 665 static final int REPLACE_BASE_CONTENT = 123; 666 static final int FORM_DID_BLUR = 124; 667 static final int RETURN_LABEL = 125; 668 static final int FIND_AGAIN = 126; 669 static final int CENTER_FIT_RECT = 127; 670 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 671 static final int SET_SCROLLBAR_MODES = 129; 672 static final int SELECTION_STRING_CHANGED = 130; 673 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 674 static final int SAVE_WEBARCHIVE_FINISHED = 132; 675 676 static final int SET_AUTOFILLABLE = 133; 677 static final int AUTOFILL_COMPLETE = 134; 678 679 static final int SELECT_AT = 135; 680 static final int SCREEN_ON = 136; 681 682 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 683 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 684 685 static final String[] HandlerPrivateDebugString = { 686 "REMEMBER_PASSWORD", // = 1; 687 "NEVER_REMEMBER_PASSWORD", // = 2; 688 "SWITCH_TO_SHORTPRESS", // = 3; 689 "SWITCH_TO_LONGPRESS", // = 4; 690 "RELEASE_SINGLE_TAP", // = 5; 691 "REQUEST_FORM_DATA", // = 6; 692 "RESUME_WEBCORE_PRIORITY", // = 7; 693 "DRAG_HELD_MOTIONLESS", // = 8; 694 "AWAKEN_SCROLL_BARS", // = 9; 695 "PREVENT_DEFAULT_TIMEOUT", // = 10; 696 "SCROLL_SELECT_TEXT" // = 11; 697 }; 698 699 static final String[] HandlerPackageDebugString = { 700 "SCROLL_TO_MSG_ID", // = 101; 701 "SCROLL_BY_MSG_ID", // = 102; 702 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 703 "SYNC_SCROLL_TO_MSG_ID", // = 104; 704 "NEW_PICTURE_MSG_ID", // = 105; 705 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 706 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 707 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 708 "UPDATE_ZOOM_RANGE", // = 109; 709 "UNHANDLED_NAV_KEY", // = 110; 710 "CLEAR_TEXT_ENTRY", // = 111; 711 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 712 "SHOW_RECT_MSG_ID", // = 113; 713 "LONG_PRESS_CENTER", // = 114; 714 "PREVENT_TOUCH_ID", // = 115; 715 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 716 "INVAL_RECT_MSG_ID", // = 117; 717 "REQUEST_KEYBOARD", // = 118; 718 "DO_MOTION_UP", // = 119; 719 "SHOW_FULLSCREEN", // = 120; 720 "HIDE_FULLSCREEN", // = 121; 721 "DOM_FOCUS_CHANGED", // = 122; 722 "REPLACE_BASE_CONTENT", // = 123; 723 "FORM_DID_BLUR", // = 124; 724 "RETURN_LABEL", // = 125; 725 "FIND_AGAIN", // = 126; 726 "CENTER_FIT_RECT", // = 127; 727 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 728 "SET_SCROLLBAR_MODES", // = 129; 729 "SELECTION_STRING_CHANGED", // = 130; 730 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 731 "SAVE_WEBARCHIVE_FINISHED", // = 132; 732 "SET_AUTOFILLABLE", // = 133; 733 "AUTOFILL_COMPLETE", // = 134; 734 "SELECT_AT", // = 135; 735 "SCREEN_ON" // = 136; 736 }; 737 738 // If the site doesn't use the viewport meta tag to specify the viewport, 739 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 740 static final int DEFAULT_VIEWPORT_WIDTH = 980; 741 742 // normally we try to fit the content to the minimum preferred width 743 // calculated by the Webkit. To avoid the bad behavior when some site's 744 // minimum preferred width keeps growing when changing the viewport width or 745 // the minimum preferred width is huge, an upper limit is needed. 746 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 747 748 // initial scale in percent. 0 means using default. 749 private int mInitialScaleInPercent = 0; 750 751 private boolean mUserScroll = false; 752 753 private int mSnapScrollMode = SNAP_NONE; 754 private static final int SNAP_NONE = 0; 755 private static final int SNAP_LOCK = 1; // not a separate state 756 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 757 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 758 private boolean mSnapPositive; 759 760 // keep these in sync with their counterparts in WebView.cpp 761 private static final int DRAW_EXTRAS_NONE = 0; 762 private static final int DRAW_EXTRAS_FIND = 1; 763 private static final int DRAW_EXTRAS_SELECTION = 2; 764 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 765 766 // keep this in sync with WebCore:ScrollbarMode in WebKit 767 private static final int SCROLLBAR_AUTO = 0; 768 private static final int SCROLLBAR_ALWAYSOFF = 1; 769 // as we auto fade scrollbar, this is ignored. 770 private static final int SCROLLBAR_ALWAYSON = 2; 771 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 772 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 773 774 // constants for determining script injection strategy 775 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 776 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 777 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 778 779 // the alias via which accessibility JavaScript interface is exposed 780 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 781 782 // JavaScript to inject the script chooser which will 783 // pick the right script for the current URL 784 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 785 "javascript:(function() {" + 786 " var chooser = document.createElement('script');" + 787 " chooser.type = 'text/javascript';" + 788 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 789 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 790 " })();"; 791 792 // Regular expression that matches the "axs" URL parameter. 793 // The value of 0 means the accessibility script is opted out 794 // The value of 1 means the accessibility script is already injected 795 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 796 797 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 798 private TextToSpeech mTextToSpeech; 799 800 // variable to cache the above pattern in case accessibility is enabled. 801 private Pattern mMatchAxsUrlParameterPattern; 802 803 /** 804 * Max distance to overscroll by in pixels. 805 * This how far content can be pulled beyond its normal bounds by the user. 806 */ 807 private int mOverscrollDistance; 808 809 /** 810 * Max distance to overfling by in pixels. 811 * This is how far flinged content can move beyond the end of its normal bounds. 812 */ 813 private int mOverflingDistance; 814 815 private OverScrollGlow mOverScrollGlow; 816 817 // Used to match key downs and key ups 818 private boolean mGotKeyDown; 819 820 /* package */ static boolean mLogEvent = true; 821 822 // for event log 823 private long mLastTouchUpTime = 0; 824 825 private WebViewCore.AutoFillData mAutoFillData; 826 827 /** 828 * URI scheme for telephone number 829 */ 830 public static final String SCHEME_TEL = "tel:"; 831 /** 832 * URI scheme for email address 833 */ 834 public static final String SCHEME_MAILTO = "mailto:"; 835 /** 836 * URI scheme for map address 837 */ 838 public static final String SCHEME_GEO = "geo:0,0?q="; 839 840 private int mBackgroundColor = Color.WHITE; 841 842 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 843 private int mAutoScrollX = 0; 844 private int mAutoScrollY = 0; 845 private int mMinAutoScrollX = 0; 846 private int mMaxAutoScrollX = 0; 847 private int mMinAutoScrollY = 0; 848 private int mMaxAutoScrollY = 0; 849 private Rect mScrollingLayerBounds = new Rect(); 850 private boolean mSentAutoScrollMessage = false; 851 852 // Used to notify listeners of a new picture. 853 private PictureListener mPictureListener; 854 /** 855 * Interface to listen for new pictures as they change. 856 */ 857 public interface PictureListener { 858 /** 859 * Notify the listener that the picture has changed. 860 * @param view The WebView that owns the picture. 861 * @param picture The new picture. 862 */ 863 public void onNewPicture(WebView view, Picture picture); 864 } 865 866 // FIXME: Want to make this public, but need to change the API file. 867 public /*static*/ class HitTestResult { 868 /** 869 * Default HitTestResult, where the target is unknown 870 */ 871 public static final int UNKNOWN_TYPE = 0; 872 /** 873 * HitTestResult for hitting a HTML::a tag 874 */ 875 public static final int ANCHOR_TYPE = 1; 876 /** 877 * HitTestResult for hitting a phone number 878 */ 879 public static final int PHONE_TYPE = 2; 880 /** 881 * HitTestResult for hitting a map address 882 */ 883 public static final int GEO_TYPE = 3; 884 /** 885 * HitTestResult for hitting an email address 886 */ 887 public static final int EMAIL_TYPE = 4; 888 /** 889 * HitTestResult for hitting an HTML::img tag 890 */ 891 public static final int IMAGE_TYPE = 5; 892 /** 893 * HitTestResult for hitting a HTML::a tag which contains HTML::img 894 */ 895 public static final int IMAGE_ANCHOR_TYPE = 6; 896 /** 897 * HitTestResult for hitting a HTML::a tag with src=http 898 */ 899 public static final int SRC_ANCHOR_TYPE = 7; 900 /** 901 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 902 */ 903 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 904 /** 905 * HitTestResult for hitting an edit text area 906 */ 907 public static final int EDIT_TEXT_TYPE = 9; 908 909 private int mType; 910 private String mExtra; 911 912 HitTestResult() { 913 mType = UNKNOWN_TYPE; 914 } 915 916 private void setType(int type) { 917 mType = type; 918 } 919 920 private void setExtra(String extra) { 921 mExtra = extra; 922 } 923 924 public int getType() { 925 return mType; 926 } 927 928 public String getExtra() { 929 return mExtra; 930 } 931 } 932 933 /** 934 * Construct a new WebView with a Context object. 935 * @param context A Context object used to access application assets. 936 */ 937 public WebView(Context context) { 938 this(context, null); 939 } 940 941 /** 942 * Construct a new WebView with layout parameters. 943 * @param context A Context object used to access application assets. 944 * @param attrs An AttributeSet passed to our parent. 945 */ 946 public WebView(Context context, AttributeSet attrs) { 947 this(context, attrs, com.android.internal.R.attr.webViewStyle); 948 } 949 950 /** 951 * Construct a new WebView with layout parameters and a default style. 952 * @param context A Context object used to access application assets. 953 * @param attrs An AttributeSet passed to our parent. 954 * @param defStyle The default style resource ID. 955 */ 956 public WebView(Context context, AttributeSet attrs, int defStyle) { 957 this(context, attrs, defStyle, false); 958 } 959 960 /** 961 * Construct a new WebView with layout parameters and a default style. 962 * @param context A Context object used to access application assets. 963 * @param attrs An AttributeSet passed to our parent. 964 * @param defStyle The default style resource ID. 965 */ 966 public WebView(Context context, AttributeSet attrs, int defStyle, 967 boolean privateBrowsing) { 968 this(context, attrs, defStyle, null, privateBrowsing); 969 } 970 971 /** 972 * Construct a new WebView with layout parameters, a default style and a set 973 * of custom Javscript interfaces to be added to the WebView at initialization 974 * time. This guarantees that these interfaces will be available when the JS 975 * context is initialized. 976 * @param context A Context object used to access application assets. 977 * @param attrs An AttributeSet passed to our parent. 978 * @param defStyle The default style resource ID. 979 * @param javaScriptInterfaces is a Map of interface names, as keys, and 980 * object implementing those interfaces, as values. 981 * @hide pending API council approval. 982 */ 983 protected WebView(Context context, AttributeSet attrs, int defStyle, 984 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 985 super(context, attrs, defStyle); 986 987 // Used by the chrome stack to find application paths 988 JniUtil.setContext(context); 989 990 mCallbackProxy = new CallbackProxy(context, this); 991 mViewManager = new ViewManager(this); 992 L10nUtils.loadStrings(context); 993 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 994 mDatabase = WebViewDatabase.getInstance(context); 995 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 996 mZoomManager = new ZoomManager(this, mCallbackProxy); 997 998 /* The init method must follow the creation of certain member variables, 999 * such as the mZoomManager. 1000 */ 1001 init(); 1002 setupPackageListener(context); 1003 setupProxyListener(context); 1004 updateMultiTouchSupport(context); 1005 1006 if (privateBrowsing) { 1007 startPrivateBrowsing(); 1008 } 1009 1010 mAutoFillData = new WebViewCore.AutoFillData(); 1011 } 1012 1013 private static class ProxyReceiver extends BroadcastReceiver { 1014 @Override 1015 public void onReceive(Context context, Intent intent) { 1016 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1017 handleProxyBroadcast(intent); 1018 } 1019 } 1020 } 1021 1022 /* 1023 * A variable to track if there is a receiver added for PROXY_CHANGE_ACTION 1024 */ 1025 private static boolean sProxyReceiverAdded; 1026 1027 private static synchronized void setupProxyListener(Context context) { 1028 if (sProxyReceiverAdded) { 1029 return; 1030 } 1031 IntentFilter filter = new IntentFilter(); 1032 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1033 Intent currentProxy = context.getApplicationContext().registerReceiver( 1034 new ProxyReceiver(), filter); 1035 sProxyReceiverAdded = true; 1036 if (currentProxy != null) { 1037 handleProxyBroadcast(currentProxy); 1038 } 1039 } 1040 1041 private static void handleProxyBroadcast(Intent intent) { 1042 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1043 if (proxyProperties == null || proxyProperties.getHost() == null) { 1044 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, ""); 1045 return; 1046 } 1047 1048 String host = proxyProperties.getHost(); 1049 int port = proxyProperties.getPort(); 1050 if (port != 0) 1051 host += ":" + port; 1052 1053 // TODO: Handle exclusion list 1054 // The plan is to make an AndroidProxyResolver, and handle the blacklist 1055 // there 1056 String exclusionList = proxyProperties.getExclusionList(); 1057 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, host); 1058 } 1059 1060 /* 1061 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1062 * or ACTION_PACKAGE_REMOVED. 1063 */ 1064 private static boolean sPackageInstallationReceiverAdded = false; 1065 1066 /* 1067 * A set of Google packages we monitor for the 1068 * navigator.isApplicationInstalled() API. Add additional packages as 1069 * needed. 1070 */ 1071 private static Set<String> sGoogleApps; 1072 static { 1073 sGoogleApps = new HashSet<String>(); 1074 sGoogleApps.add("com.google.android.youtube"); 1075 } 1076 1077 private static class PackageListener extends BroadcastReceiver { 1078 @Override 1079 public void onReceive(Context context, Intent intent) { 1080 final String action = intent.getAction(); 1081 final String packageName = intent.getData().getSchemeSpecificPart(); 1082 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1083 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1084 // if it is replacing, refreshPlugins() when adding 1085 return; 1086 } 1087 1088 if (sGoogleApps.contains(packageName)) { 1089 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1090 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1091 } else { 1092 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1093 } 1094 } 1095 1096 PluginManager pm = PluginManager.getInstance(context); 1097 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1098 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1099 } 1100 } 1101 } 1102 1103 private void setupPackageListener(Context context) { 1104 1105 /* 1106 * we must synchronize the instance check and the creation of the 1107 * receiver to ensure that only ONE receiver exists for all WebView 1108 * instances. 1109 */ 1110 synchronized (WebView.class) { 1111 1112 // if the receiver already exists then we do not need to register it 1113 // again 1114 if (sPackageInstallationReceiverAdded) { 1115 return; 1116 } 1117 1118 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1119 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1120 filter.addDataScheme("package"); 1121 BroadcastReceiver packageListener = new PackageListener(); 1122 context.getApplicationContext().registerReceiver(packageListener, filter); 1123 sPackageInstallationReceiverAdded = true; 1124 } 1125 1126 // check if any of the monitored apps are already installed 1127 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1128 1129 @Override 1130 protected Set<String> doInBackground(Void... unused) { 1131 Set<String> installedPackages = new HashSet<String>(); 1132 PackageManager pm = mContext.getPackageManager(); 1133 List<PackageInfo> packages = pm.getInstalledPackages(0); 1134 for (PackageInfo p : packages) { 1135 if (sGoogleApps.contains(p.packageName)) { 1136 installedPackages.add(p.packageName); 1137 } 1138 } 1139 return installedPackages; 1140 } 1141 1142 // Executes on the UI thread 1143 @Override 1144 protected void onPostExecute(Set<String> installedPackages) { 1145 if (mWebViewCore != null) { 1146 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1147 } 1148 } 1149 }; 1150 task.execute(); 1151 } 1152 1153 void updateMultiTouchSupport(Context context) { 1154 mZoomManager.updateMultiTouchSupport(context); 1155 } 1156 1157 private void init() { 1158 setWillNotDraw(false); 1159 setFocusable(true); 1160 setFocusableInTouchMode(true); 1161 setClickable(true); 1162 setLongClickable(true); 1163 1164 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1165 int slop = configuration.getScaledTouchSlop(); 1166 mTouchSlopSquare = slop * slop; 1167 mMinLockSnapReverseDistance = slop; 1168 slop = configuration.getScaledDoubleTapSlop(); 1169 mDoubleTapSlopSquare = slop * slop; 1170 final float density = getContext().getResources().getDisplayMetrics().density; 1171 // use one line height, 16 based on our current default font, for how 1172 // far we allow a touch be away from the edge of a link 1173 mNavSlop = (int) (16 * density); 1174 mZoomManager.init(density); 1175 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1176 1177 // Compute the inverse of the density squared. 1178 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1179 1180 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1181 mOverflingDistance = configuration.getScaledOverflingDistance(); 1182 } 1183 1184 /** 1185 * Adds accessibility APIs to JavaScript. 1186 * 1187 * Note: This method is responsible to performing the necessary 1188 * check if the accessibility APIs should be exposed. 1189 */ 1190 private void addAccessibilityApisToJavaScript() { 1191 if (AccessibilityManager.getInstance(mContext).isEnabled() 1192 && getSettings().getJavaScriptEnabled()) { 1193 // exposing the TTS for now ... 1194 mTextToSpeech = new TextToSpeech(getContext(), null); 1195 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1196 } 1197 } 1198 1199 /** 1200 * Removes accessibility APIs from JavaScript. 1201 */ 1202 private void removeAccessibilityApisFromJavaScript() { 1203 // exposing the TTS for now ... 1204 if (mTextToSpeech != null) { 1205 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1206 mTextToSpeech.shutdown(); 1207 mTextToSpeech = null; 1208 } 1209 } 1210 1211 @Override 1212 public void setOverScrollMode(int mode) { 1213 super.setOverScrollMode(mode); 1214 if (mode != OVER_SCROLL_NEVER) { 1215 if (mOverScrollGlow == null) { 1216 mOverScrollGlow = new OverScrollGlow(this); 1217 } 1218 } else { 1219 mOverScrollGlow = null; 1220 } 1221 } 1222 1223 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1224 final float density = mContext.getResources().getDisplayMetrics().density 1225 * 100 / zoomDensity; 1226 mNavSlop = (int) (16 * density); 1227 mZoomManager.updateDefaultZoomDensity(density); 1228 } 1229 1230 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1231 String password, final Message resumeMsg) { 1232 boolean rVal = false; 1233 if (resumeMsg == null) { 1234 // null resumeMsg implies saving password silently 1235 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1236 } else { 1237 final Message remember = mPrivateHandler.obtainMessage( 1238 REMEMBER_PASSWORD); 1239 remember.getData().putString("host", schemePlusHost); 1240 remember.getData().putString("username", username); 1241 remember.getData().putString("password", password); 1242 remember.obj = resumeMsg; 1243 1244 final Message neverRemember = mPrivateHandler.obtainMessage( 1245 NEVER_REMEMBER_PASSWORD); 1246 neverRemember.getData().putString("host", schemePlusHost); 1247 neverRemember.getData().putString("username", username); 1248 neverRemember.getData().putString("password", password); 1249 neverRemember.obj = resumeMsg; 1250 1251 new AlertDialog.Builder(getContext()) 1252 .setTitle(com.android.internal.R.string.save_password_label) 1253 .setMessage(com.android.internal.R.string.save_password_message) 1254 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1255 new DialogInterface.OnClickListener() { 1256 public void onClick(DialogInterface dialog, int which) { 1257 resumeMsg.sendToTarget(); 1258 } 1259 }) 1260 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1261 new DialogInterface.OnClickListener() { 1262 public void onClick(DialogInterface dialog, int which) { 1263 remember.sendToTarget(); 1264 } 1265 }) 1266 .setNegativeButton(com.android.internal.R.string.save_password_never, 1267 new DialogInterface.OnClickListener() { 1268 public void onClick(DialogInterface dialog, int which) { 1269 neverRemember.sendToTarget(); 1270 } 1271 }) 1272 .setOnCancelListener(new OnCancelListener() { 1273 public void onCancel(DialogInterface dialog) { 1274 resumeMsg.sendToTarget(); 1275 } 1276 }).show(); 1277 // Return true so that WebViewCore will pause while the dialog is 1278 // up. 1279 rVal = true; 1280 } 1281 return rVal; 1282 } 1283 1284 @Override 1285 public void setScrollBarStyle(int style) { 1286 if (style == View.SCROLLBARS_INSIDE_INSET 1287 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1288 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1289 } else { 1290 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1291 } 1292 super.setScrollBarStyle(style); 1293 } 1294 1295 /** 1296 * Specify whether the horizontal scrollbar has overlay style. 1297 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1298 */ 1299 public void setHorizontalScrollbarOverlay(boolean overlay) { 1300 mOverlayHorizontalScrollbar = overlay; 1301 } 1302 1303 /** 1304 * Specify whether the vertical scrollbar has overlay style. 1305 * @param overlay TRUE if vertical scrollbar should have overlay style. 1306 */ 1307 public void setVerticalScrollbarOverlay(boolean overlay) { 1308 mOverlayVerticalScrollbar = overlay; 1309 } 1310 1311 /** 1312 * Return whether horizontal scrollbar has overlay style 1313 * @return TRUE if horizontal scrollbar has overlay style. 1314 */ 1315 public boolean overlayHorizontalScrollbar() { 1316 return mOverlayHorizontalScrollbar; 1317 } 1318 1319 /** 1320 * Return whether vertical scrollbar has overlay style 1321 * @return TRUE if vertical scrollbar has overlay style. 1322 */ 1323 public boolean overlayVerticalScrollbar() { 1324 return mOverlayVerticalScrollbar; 1325 } 1326 1327 /* 1328 * Return the width of the view where the content of WebView should render 1329 * to. 1330 * Note: this can be called from WebCoreThread. 1331 */ 1332 /* package */ int getViewWidth() { 1333 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1334 return getWidth(); 1335 } else { 1336 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1337 } 1338 } 1339 1340 /* 1341 * returns the height of the titlebarview (if any). Does not care about 1342 * scrolling 1343 */ 1344 int getTitleHeight() { 1345 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1346 } 1347 1348 /* 1349 * Return the amount of the titlebarview (if any) that is visible 1350 * 1351 * @hide 1352 */ 1353 public int getVisibleTitleHeight() { 1354 // need to restrict mScrollY due to over scroll 1355 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1356 } 1357 1358 /* 1359 * Return the height of the view where the content of WebView should render 1360 * to. Note that this excludes mTitleBar, if there is one. 1361 * Note: this can be called from WebCoreThread. 1362 */ 1363 /* package */ int getViewHeight() { 1364 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1365 } 1366 1367 private int getViewHeightWithTitle() { 1368 int height = getHeight(); 1369 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1370 height -= getHorizontalScrollbarHeight(); 1371 } 1372 return height; 1373 } 1374 1375 /** 1376 * @return The SSL certificate for the main top-level page or null if 1377 * there is no certificate (the site is not secure). 1378 */ 1379 public SslCertificate getCertificate() { 1380 return mCertificate; 1381 } 1382 1383 /** 1384 * Sets the SSL certificate for the main top-level page. 1385 */ 1386 public void setCertificate(SslCertificate certificate) { 1387 if (DebugFlags.WEB_VIEW) { 1388 Log.v(LOGTAG, "setCertificate=" + certificate); 1389 } 1390 // here, the certificate can be null (if the site is not secure) 1391 mCertificate = certificate; 1392 } 1393 1394 //------------------------------------------------------------------------- 1395 // Methods called by activity 1396 //------------------------------------------------------------------------- 1397 1398 /** 1399 * Save the username and password for a particular host in the WebView's 1400 * internal database. 1401 * @param host The host that required the credentials. 1402 * @param username The username for the given host. 1403 * @param password The password for the given host. 1404 */ 1405 public void savePassword(String host, String username, String password) { 1406 mDatabase.setUsernamePassword(host, username, password); 1407 } 1408 1409 /** 1410 * Set the HTTP authentication credentials for a given host and realm. 1411 * 1412 * @param host The host for the credentials. 1413 * @param realm The realm for the credentials. 1414 * @param username The username for the password. If it is null, it means 1415 * password can't be saved. 1416 * @param password The password 1417 */ 1418 public void setHttpAuthUsernamePassword(String host, String realm, 1419 String username, String password) { 1420 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1421 } 1422 1423 /** 1424 * Retrieve the HTTP authentication username and password for a given 1425 * host & realm pair 1426 * 1427 * @param host The host for which the credentials apply. 1428 * @param realm The realm for which the credentials apply. 1429 * @return String[] if found, String[0] is username, which can be null and 1430 * String[1] is password. Return null if it can't find anything. 1431 */ 1432 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1433 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1434 } 1435 1436 /** 1437 * Remove Find or Select ActionModes, if active. 1438 */ 1439 private void clearActionModes() { 1440 if (mSelectCallback != null) { 1441 mSelectCallback.finish(); 1442 } 1443 if (mFindCallback != null) { 1444 mFindCallback.finish(); 1445 } 1446 } 1447 1448 /** 1449 * Called to clear state when moving from one page to another, or changing 1450 * in some other way that makes elements associated with the current page 1451 * (such as WebTextView or ActionModes) no longer relevant. 1452 */ 1453 private void clearHelpers() { 1454 clearTextEntry(); 1455 clearActionModes(); 1456 dismissFullScreenMode(); 1457 } 1458 1459 /** 1460 * Destroy the internal state of the WebView. This method should be called 1461 * after the WebView has been removed from the view system. No other 1462 * methods may be called on a WebView after destroy. 1463 */ 1464 public void destroy() { 1465 clearHelpers(); 1466 if (mListBoxDialog != null) { 1467 mListBoxDialog.dismiss(); 1468 mListBoxDialog = null; 1469 } 1470 if (mWebViewCore != null) { 1471 // Set the handlers to null before destroying WebViewCore so no 1472 // more messages will be posted. 1473 mCallbackProxy.setWebViewClient(null); 1474 mCallbackProxy.setWebChromeClient(null); 1475 // Tell WebViewCore to destroy itself 1476 synchronized (this) { 1477 WebViewCore webViewCore = mWebViewCore; 1478 mWebViewCore = null; // prevent using partial webViewCore 1479 webViewCore.destroy(); 1480 } 1481 // Remove any pending messages that might not be serviced yet. 1482 mPrivateHandler.removeCallbacksAndMessages(null); 1483 mCallbackProxy.removeCallbacksAndMessages(null); 1484 // Wake up the WebCore thread just in case it is waiting for a 1485 // JavaScript dialog. 1486 synchronized (mCallbackProxy) { 1487 mCallbackProxy.notify(); 1488 } 1489 } 1490 if (mNativeClass != 0) { 1491 nativeDestroy(); 1492 mNativeClass = 0; 1493 } 1494 } 1495 1496 /** 1497 * Enables platform notifications of data state and proxy changes. 1498 */ 1499 public static void enablePlatformNotifications() { 1500 Network.enablePlatformNotifications(); 1501 } 1502 1503 /** 1504 * If platform notifications are enabled, this should be called 1505 * from the Activity's onPause() or onStop(). 1506 */ 1507 public static void disablePlatformNotifications() { 1508 Network.disablePlatformNotifications(); 1509 } 1510 1511 /** 1512 * Sets JavaScript engine flags. 1513 * 1514 * @param flags JS engine flags in a String 1515 * 1516 * @hide pending API solidification 1517 */ 1518 public void setJsFlags(String flags) { 1519 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1520 } 1521 1522 /** 1523 * Inform WebView of the network state. This is used to set 1524 * the JavaScript property window.navigator.isOnline and 1525 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1526 * @param networkUp boolean indicating if network is available 1527 */ 1528 public void setNetworkAvailable(boolean networkUp) { 1529 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1530 networkUp ? 1 : 0, 0); 1531 } 1532 1533 /** 1534 * Inform WebView about the current network type. 1535 * {@hide} 1536 */ 1537 public void setNetworkType(String type, String subtype) { 1538 Map<String, String> map = new HashMap<String, String>(); 1539 map.put("type", type); 1540 map.put("subtype", subtype); 1541 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1542 } 1543 /** 1544 * Save the state of this WebView used in 1545 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1546 * method no longer stores the display data for this WebView. The previous 1547 * behavior could potentially leak files if {@link #restoreState} was never 1548 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1549 * and restoring the display data. 1550 * @param outState The Bundle to store the WebView state. 1551 * @return The same copy of the back/forward list used to save the state. If 1552 * saveState fails, the returned list will be null. 1553 * @see #savePicture 1554 * @see #restorePicture 1555 */ 1556 public WebBackForwardList saveState(Bundle outState) { 1557 if (outState == null) { 1558 return null; 1559 } 1560 // We grab a copy of the back/forward list because a client of WebView 1561 // may have invalidated the history list by calling clearHistory. 1562 WebBackForwardList list = copyBackForwardList(); 1563 final int currentIndex = list.getCurrentIndex(); 1564 final int size = list.getSize(); 1565 // We should fail saving the state if the list is empty or the index is 1566 // not in a valid range. 1567 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1568 return null; 1569 } 1570 outState.putInt("index", currentIndex); 1571 // FIXME: This should just be a byte[][] instead of ArrayList but 1572 // Parcel.java does not have the code to handle multi-dimensional 1573 // arrays. 1574 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1575 for (int i = 0; i < size; i++) { 1576 WebHistoryItem item = list.getItemAtIndex(i); 1577 if (null == item) { 1578 // FIXME: this shouldn't happen 1579 // need to determine how item got set to null 1580 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1581 return null; 1582 } 1583 byte[] data = item.getFlattenedData(); 1584 if (data == null) { 1585 // It would be very odd to not have any data for a given history 1586 // item. And we will fail to rebuild the history list without 1587 // flattened data. 1588 return null; 1589 } 1590 history.add(data); 1591 } 1592 outState.putSerializable("history", history); 1593 if (mCertificate != null) { 1594 outState.putBundle("certificate", 1595 SslCertificate.saveState(mCertificate)); 1596 } 1597 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1598 mZoomManager.saveZoomState(outState); 1599 return list; 1600 } 1601 1602 /** 1603 * Save the current display data to the Bundle given. Used in conjunction 1604 * with {@link #saveState}. 1605 * @param b A Bundle to store the display data. 1606 * @param dest The file to store the serialized picture data. Will be 1607 * overwritten with this WebView's picture data. 1608 * @return True if the picture was successfully saved. 1609 */ 1610 public boolean savePicture(Bundle b, final File dest) { 1611 if (dest == null || b == null) { 1612 return false; 1613 } 1614 final Picture p = capturePicture(); 1615 // Use a temporary file while writing to ensure the destination file 1616 // contains valid data. 1617 final File temp = new File(dest.getPath() + ".writing"); 1618 new Thread(new Runnable() { 1619 public void run() { 1620 FileOutputStream out = null; 1621 try { 1622 out = new FileOutputStream(temp); 1623 p.writeToStream(out); 1624 // Writing the picture succeeded, rename the temporary file 1625 // to the destination. 1626 temp.renameTo(dest); 1627 } catch (Exception e) { 1628 // too late to do anything about it. 1629 } finally { 1630 if (out != null) { 1631 try { 1632 out.close(); 1633 } catch (Exception e) { 1634 // Can't do anything about that 1635 } 1636 } 1637 temp.delete(); 1638 } 1639 } 1640 }).start(); 1641 // now update the bundle 1642 b.putInt("scrollX", mScrollX); 1643 b.putInt("scrollY", mScrollY); 1644 mZoomManager.saveZoomState(b); 1645 return true; 1646 } 1647 1648 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1649 int sx = b.getInt("scrollX", 0); 1650 int sy = b.getInt("scrollY", 0); 1651 1652 mDrawHistory = true; 1653 mHistoryPicture = p; 1654 mScrollX = sx; 1655 mScrollY = sy; 1656 mZoomManager.restoreZoomState(b); 1657 final float scale = mZoomManager.getScale(); 1658 mHistoryWidth = Math.round(p.getWidth() * scale); 1659 mHistoryHeight = Math.round(p.getHeight() * scale); 1660 1661 invalidate(); 1662 } 1663 1664 /** 1665 * Restore the display data that was save in {@link #savePicture}. Used in 1666 * conjunction with {@link #restoreState}. 1667 * @param b A Bundle containing the saved display data. 1668 * @param src The file where the picture data was stored. 1669 * @return True if the picture was successfully restored. 1670 */ 1671 public boolean restorePicture(Bundle b, File src) { 1672 if (src == null || b == null) { 1673 return false; 1674 } 1675 if (!src.exists()) { 1676 return false; 1677 } 1678 try { 1679 final FileInputStream in = new FileInputStream(src); 1680 final Bundle copy = new Bundle(b); 1681 new Thread(new Runnable() { 1682 public void run() { 1683 try { 1684 final Picture p = Picture.createFromStream(in); 1685 if (p != null) { 1686 // Post a runnable on the main thread to update the 1687 // history picture fields. 1688 mPrivateHandler.post(new Runnable() { 1689 public void run() { 1690 restoreHistoryPictureFields(p, copy); 1691 } 1692 }); 1693 } 1694 } finally { 1695 try { 1696 in.close(); 1697 } catch (Exception e) { 1698 // Nothing we can do now. 1699 } 1700 } 1701 } 1702 }).start(); 1703 } catch (FileNotFoundException e){ 1704 e.printStackTrace(); 1705 } 1706 return true; 1707 } 1708 1709 /** 1710 * Restore the state of this WebView from the given map used in 1711 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1712 * be called to restore the state of the WebView before using the object. If 1713 * it is called after the WebView has had a chance to build state (load 1714 * pages, create a back/forward list, etc.) there may be undesirable 1715 * side-effects. Please note that this method no longer restores the 1716 * display data for this WebView. See {@link #savePicture} and {@link 1717 * #restorePicture} for saving and restoring the display data. 1718 * @param inState The incoming Bundle of state. 1719 * @return The restored back/forward list or null if restoreState failed. 1720 * @see #savePicture 1721 * @see #restorePicture 1722 */ 1723 public WebBackForwardList restoreState(Bundle inState) { 1724 WebBackForwardList returnList = null; 1725 if (inState == null) { 1726 return returnList; 1727 } 1728 if (inState.containsKey("index") && inState.containsKey("history")) { 1729 mCertificate = SslCertificate.restoreState( 1730 inState.getBundle("certificate")); 1731 1732 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1733 final int index = inState.getInt("index"); 1734 // We can't use a clone of the list because we need to modify the 1735 // shared copy, so synchronize instead to prevent concurrent 1736 // modifications. 1737 synchronized (list) { 1738 final List<byte[]> history = 1739 (List<byte[]>) inState.getSerializable("history"); 1740 final int size = history.size(); 1741 // Check the index bounds so we don't crash in native code while 1742 // restoring the history index. 1743 if (index < 0 || index >= size) { 1744 return null; 1745 } 1746 for (int i = 0; i < size; i++) { 1747 byte[] data = history.remove(0); 1748 if (data == null) { 1749 // If we somehow have null data, we cannot reconstruct 1750 // the item and thus our history list cannot be rebuilt. 1751 return null; 1752 } 1753 WebHistoryItem item = new WebHistoryItem(data); 1754 list.addHistoryItem(item); 1755 } 1756 // Grab the most recent copy to return to the caller. 1757 returnList = copyBackForwardList(); 1758 // Update the copy to have the correct index. 1759 returnList.setCurrentIndex(index); 1760 } 1761 // Restore private browsing setting. 1762 if (inState.getBoolean("privateBrowsingEnabled")) { 1763 getSettings().setPrivateBrowsingEnabled(true); 1764 } 1765 mZoomManager.restoreZoomState(inState); 1766 // Remove all pending messages because we are restoring previous 1767 // state. 1768 mWebViewCore.removeMessages(); 1769 // Send a restore state message. 1770 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1771 } 1772 return returnList; 1773 } 1774 1775 /** 1776 * Load the given url with the extra headers. 1777 * @param url The url of the resource to load. 1778 * @param extraHeaders The extra headers sent with this url. This should not 1779 * include the common headers like "user-agent". If it does, it 1780 * will be replaced by the intrinsic value of the WebView. 1781 */ 1782 public void loadUrl(String url, Map<String, String> extraHeaders) { 1783 switchOutDrawHistory(); 1784 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1785 arg.mUrl = url; 1786 arg.mExtraHeaders = extraHeaders; 1787 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1788 clearHelpers(); 1789 } 1790 1791 /** 1792 * Load the given url. 1793 * @param url The url of the resource to load. 1794 */ 1795 public void loadUrl(String url) { 1796 if (url == null) { 1797 return; 1798 } 1799 loadUrl(url, null); 1800 } 1801 1802 /** 1803 * Load the url with postData using "POST" method into the WebView. If url 1804 * is not a network url, it will be loaded with {link 1805 * {@link #loadUrl(String)} instead. 1806 * 1807 * @param url The url of the resource to load. 1808 * @param postData The data will be passed to "POST" request. 1809 */ 1810 public void postUrl(String url, byte[] postData) { 1811 if (URLUtil.isNetworkUrl(url)) { 1812 switchOutDrawHistory(); 1813 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1814 arg.mUrl = url; 1815 arg.mPostData = postData; 1816 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1817 clearHelpers(); 1818 } else { 1819 loadUrl(url); 1820 } 1821 } 1822 1823 /** 1824 * Load the given data into the WebView. This will load the data into 1825 * WebView using the data: scheme. Content loaded through this mechanism 1826 * does not have the ability to load content from the network. 1827 * @param data A String of data in the given encoding. The date must 1828 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1829 * %27, %3f respectively. 1830 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1831 * @param encoding The encoding of the data. i.e. utf-8, base64 1832 */ 1833 public void loadData(String data, String mimeType, String encoding) { 1834 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1835 } 1836 1837 /** 1838 * Load the given data into the WebView, use the provided URL as the base 1839 * URL for the content. The base URL is the URL that represents the page 1840 * that is loaded through this interface. As such, it is used to resolve any 1841 * relative URLs. The historyUrl is used for the history entry. 1842 * <p> 1843 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1844 * files through "file:///android_asset/" for the sub resources is more 1845 * restricted. If you provide null or empty string as baseUrl, you won't be 1846 * able to access asset files. If the baseUrl is anything other than 1847 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1848 * sub resources. 1849 * 1850 * @param baseUrl Url to resolve relative paths with, if null defaults to 1851 * "about:blank" 1852 * @param data A String of data in the given encoding. 1853 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1854 * defaults to "text/html" 1855 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1856 * @param historyUrl URL to use as the history entry. Can be null. 1857 */ 1858 public void loadDataWithBaseURL(String baseUrl, String data, 1859 String mimeType, String encoding, String historyUrl) { 1860 1861 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1862 loadData(data, mimeType, encoding); 1863 return; 1864 } 1865 switchOutDrawHistory(); 1866 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1867 arg.mBaseUrl = baseUrl; 1868 arg.mData = data; 1869 arg.mMimeType = mimeType; 1870 arg.mEncoding = encoding; 1871 arg.mHistoryUrl = historyUrl; 1872 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1873 clearHelpers(); 1874 } 1875 1876 /** 1877 * Saves the current view as a web archive. 1878 * 1879 * @param filename The filename where the archive should be placed. 1880 */ 1881 public void saveWebArchive(String filename) { 1882 saveWebArchive(filename, false, null); 1883 } 1884 1885 /* package */ static class SaveWebArchiveMessage { 1886 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1887 mBasename = basename; 1888 mAutoname = autoname; 1889 mCallback = callback; 1890 } 1891 1892 /* package */ final String mBasename; 1893 /* package */ final boolean mAutoname; 1894 /* package */ final ValueCallback<String> mCallback; 1895 /* package */ String mResultFile; 1896 } 1897 1898 /** 1899 * Saves the current view as a web archive. 1900 * 1901 * @param basename The filename where the archive should be placed. 1902 * @param autoname If false, takes basename to be a file. If true, basename 1903 * is assumed to be a directory in which a filename will be 1904 * chosen according to the url of the current page. 1905 * @param callback Called after the web archive has been saved. The 1906 * parameter for onReceiveValue will either be the filename 1907 * under which the file was saved, or null if saving the 1908 * file failed. 1909 */ 1910 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1911 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1912 new SaveWebArchiveMessage(basename, autoname, callback)); 1913 } 1914 1915 /** 1916 * Stop the current load. 1917 */ 1918 public void stopLoading() { 1919 // TODO: should we clear all the messages in the queue before sending 1920 // STOP_LOADING? 1921 switchOutDrawHistory(); 1922 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1923 } 1924 1925 /** 1926 * Reload the current url. 1927 */ 1928 public void reload() { 1929 clearHelpers(); 1930 switchOutDrawHistory(); 1931 mWebViewCore.sendMessage(EventHub.RELOAD); 1932 } 1933 1934 /** 1935 * Return true if this WebView has a back history item. 1936 * @return True iff this WebView has a back history item. 1937 */ 1938 public boolean canGoBack() { 1939 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1940 synchronized (l) { 1941 if (l.getClearPending()) { 1942 return false; 1943 } else { 1944 return l.getCurrentIndex() > 0; 1945 } 1946 } 1947 } 1948 1949 /** 1950 * Go back in the history of this WebView. 1951 */ 1952 public void goBack() { 1953 goBackOrForward(-1); 1954 } 1955 1956 /** 1957 * Return true if this WebView has a forward history item. 1958 * @return True iff this Webview has a forward history item. 1959 */ 1960 public boolean canGoForward() { 1961 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1962 synchronized (l) { 1963 if (l.getClearPending()) { 1964 return false; 1965 } else { 1966 return l.getCurrentIndex() < l.getSize() - 1; 1967 } 1968 } 1969 } 1970 1971 /** 1972 * Go forward in the history of this WebView. 1973 */ 1974 public void goForward() { 1975 goBackOrForward(1); 1976 } 1977 1978 /** 1979 * Return true if the page can go back or forward the given 1980 * number of steps. 1981 * @param steps The negative or positive number of steps to move the 1982 * history. 1983 */ 1984 public boolean canGoBackOrForward(int steps) { 1985 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1986 synchronized (l) { 1987 if (l.getClearPending()) { 1988 return false; 1989 } else { 1990 int newIndex = l.getCurrentIndex() + steps; 1991 return newIndex >= 0 && newIndex < l.getSize(); 1992 } 1993 } 1994 } 1995 1996 /** 1997 * Go to the history item that is the number of steps away from 1998 * the current item. Steps is negative if backward and positive 1999 * if forward. 2000 * @param steps The number of steps to take back or forward in the back 2001 * forward list. 2002 */ 2003 public void goBackOrForward(int steps) { 2004 goBackOrForward(steps, false); 2005 } 2006 2007 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2008 if (steps != 0) { 2009 clearHelpers(); 2010 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2011 ignoreSnapshot ? 1 : 0); 2012 } 2013 } 2014 2015 /** 2016 * Returns true if private browsing is enabled in this WebView. 2017 */ 2018 public boolean isPrivateBrowsingEnabled() { 2019 return getSettings().isPrivateBrowsingEnabled(); 2020 } 2021 2022 private void startPrivateBrowsing() { 2023 getSettings().setPrivateBrowsingEnabled(true); 2024 } 2025 2026 private boolean extendScroll(int y) { 2027 int finalY = mScroller.getFinalY(); 2028 int newY = pinLocY(finalY + y); 2029 if (newY == finalY) return false; 2030 mScroller.setFinalY(newY); 2031 mScroller.extendDuration(computeDuration(0, y)); 2032 return true; 2033 } 2034 2035 /** 2036 * Scroll the contents of the view up by half the view size 2037 * @param top true to jump to the top of the page 2038 * @return true if the page was scrolled 2039 */ 2040 public boolean pageUp(boolean top) { 2041 if (mNativeClass == 0) { 2042 return false; 2043 } 2044 nativeClearCursor(); // start next trackball movement from page edge 2045 if (top) { 2046 // go to the top of the document 2047 return pinScrollTo(mScrollX, 0, true, 0); 2048 } 2049 // Page up 2050 int h = getHeight(); 2051 int y; 2052 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2053 y = -h + PAGE_SCROLL_OVERLAP; 2054 } else { 2055 y = -h / 2; 2056 } 2057 mUserScroll = true; 2058 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2059 : extendScroll(y); 2060 } 2061 2062 /** 2063 * Scroll the contents of the view down by half the page size 2064 * @param bottom true to jump to bottom of page 2065 * @return true if the page was scrolled 2066 */ 2067 public boolean pageDown(boolean bottom) { 2068 if (mNativeClass == 0) { 2069 return false; 2070 } 2071 nativeClearCursor(); // start next trackball movement from page edge 2072 if (bottom) { 2073 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2074 } 2075 // Page down. 2076 int h = getHeight(); 2077 int y; 2078 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2079 y = h - PAGE_SCROLL_OVERLAP; 2080 } else { 2081 y = h / 2; 2082 } 2083 mUserScroll = true; 2084 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2085 : extendScroll(y); 2086 } 2087 2088 /** 2089 * Clear the view so that onDraw() will draw nothing but white background, 2090 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2091 */ 2092 public void clearView() { 2093 mContentWidth = 0; 2094 mContentHeight = 0; 2095 setBaseLayer(0, null); 2096 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2097 } 2098 2099 /** 2100 * Return a new picture that captures the current display of the webview. 2101 * This is a copy of the display, and will be unaffected if the webview 2102 * later loads a different URL. 2103 * 2104 * @return a picture containing the current contents of the view. Note this 2105 * picture is of the entire document, and is not restricted to the 2106 * bounds of the view. 2107 */ 2108 public Picture capturePicture() { 2109 if (mNativeClass == 0) return null; 2110 Picture result = new Picture(); 2111 nativeCopyBaseContentToPicture(result); 2112 return result; 2113 } 2114 2115 /** 2116 * Return true if the browser is displaying a TextView for text input. 2117 */ 2118 private boolean inEditingMode() { 2119 return mWebTextView != null && mWebTextView.getParent() != null; 2120 } 2121 2122 /** 2123 * Remove the WebTextView. 2124 */ 2125 private void clearTextEntry() { 2126 if (inEditingMode()) { 2127 mWebTextView.remove(); 2128 } else { 2129 // The keyboard may be open with the WebView as the served view 2130 hideSoftKeyboard(); 2131 } 2132 } 2133 2134 /** 2135 * Return the current scale of the WebView 2136 * @return The current scale. 2137 */ 2138 public float getScale() { 2139 return mZoomManager.getScale(); 2140 } 2141 2142 /** 2143 * Set the initial scale for the WebView. 0 means default. If 2144 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2145 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2146 * WebView starts will this value as initial scale. 2147 * 2148 * @param scaleInPercent The initial scale in percent. 2149 */ 2150 public void setInitialScale(int scaleInPercent) { 2151 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2152 } 2153 2154 /** 2155 * Invoke the graphical zoom picker widget for this WebView. This will 2156 * result in the zoom widget appearing on the screen to control the zoom 2157 * level of this WebView. 2158 */ 2159 public void invokeZoomPicker() { 2160 if (!getSettings().supportZoom()) { 2161 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2162 return; 2163 } 2164 clearHelpers(); 2165 mZoomManager.invokeZoomPicker(); 2166 } 2167 2168 /** 2169 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2170 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2171 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2172 * anchor does not have a url or if it is a JavaScript url, the type will 2173 * be UNKNOWN_TYPE and the url has to be retrieved through 2174 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2175 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2176 * the "extra" field. A type of 2177 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2178 * a child node. If a phone number is found, the HitTestResult type is set 2179 * to PHONE_TYPE and the phone number is set in the "extra" field of 2180 * HitTestResult. If a map address is found, the HitTestResult type is set 2181 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2182 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2183 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2184 * HitTestResult type is set to UNKNOWN_TYPE. 2185 */ 2186 public HitTestResult getHitTestResult() { 2187 return hitTestResult(mInitialHitTestResult); 2188 } 2189 2190 private HitTestResult hitTestResult(HitTestResult fallback) { 2191 if (mNativeClass == 0) { 2192 return null; 2193 } 2194 2195 HitTestResult result = new HitTestResult(); 2196 if (nativeHasCursorNode()) { 2197 if (nativeCursorIsTextInput()) { 2198 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2199 } else { 2200 String text = nativeCursorText(); 2201 if (text != null) { 2202 if (text.startsWith(SCHEME_TEL)) { 2203 result.setType(HitTestResult.PHONE_TYPE); 2204 result.setExtra(text.substring(SCHEME_TEL.length())); 2205 } else if (text.startsWith(SCHEME_MAILTO)) { 2206 result.setType(HitTestResult.EMAIL_TYPE); 2207 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2208 } else if (text.startsWith(SCHEME_GEO)) { 2209 result.setType(HitTestResult.GEO_TYPE); 2210 result.setExtra(URLDecoder.decode(text 2211 .substring(SCHEME_GEO.length()))); 2212 } else if (nativeCursorIsAnchor()) { 2213 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2214 result.setExtra(text); 2215 } 2216 } 2217 } 2218 } else if (fallback != null) { 2219 /* If webkit causes a rebuild while the long press is in progress, 2220 * the cursor node may be reset, even if it is still around. This 2221 * uses the cursor node saved when the touch began. Since the 2222 * nativeImageURI below only changes the result if it is successful, 2223 * this uses the data beneath the touch if available or the original 2224 * tap data otherwise. 2225 */ 2226 Log.v(LOGTAG, "hitTestResult use fallback"); 2227 result = fallback; 2228 } 2229 int type = result.getType(); 2230 if (type == HitTestResult.UNKNOWN_TYPE 2231 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2232 // Now check to see if it is an image. 2233 int contentX = viewToContentX(mLastTouchX + mScrollX); 2234 int contentY = viewToContentY(mLastTouchY + mScrollY); 2235 String text = nativeImageURI(contentX, contentY); 2236 if (text != null) { 2237 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2238 HitTestResult.IMAGE_TYPE : 2239 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2240 result.setExtra(text); 2241 } 2242 } 2243 return result; 2244 } 2245 2246 // Called by JNI when the DOM has changed the focus. Clear the focus so 2247 // that new keys will go to the newly focused field 2248 private void domChangedFocus() { 2249 if (inEditingMode()) { 2250 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2251 } 2252 } 2253 /** 2254 * Request the anchor or image element URL at the last tapped point. 2255 * If hrefMsg is null, this method returns immediately and does not 2256 * dispatch hrefMsg to its target. If the tapped point hits an image, 2257 * an anchor, or an image in an anchor, the message associates 2258 * strings in named keys in its data. The value paired with the key 2259 * may be an empty string. 2260 * 2261 * @param hrefMsg This message will be dispatched with the result of the 2262 * request. The message data contains three keys: 2263 * - "url" returns the anchor's href attribute. 2264 * - "title" returns the anchor's text. 2265 * - "src" returns the image's src attribute. 2266 */ 2267 public void requestFocusNodeHref(Message hrefMsg) { 2268 if (hrefMsg == null) { 2269 return; 2270 } 2271 int contentX = viewToContentX(mLastTouchX + mScrollX); 2272 int contentY = viewToContentY(mLastTouchY + mScrollY); 2273 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2274 contentX, contentY, hrefMsg); 2275 } 2276 2277 /** 2278 * Request the url of the image last touched by the user. msg will be sent 2279 * to its target with a String representing the url as its object. 2280 * 2281 * @param msg This message will be dispatched with the result of the request 2282 * as the data member with "url" as key. The result can be null. 2283 */ 2284 public void requestImageRef(Message msg) { 2285 if (0 == mNativeClass) return; // client isn't initialized 2286 int contentX = viewToContentX(mLastTouchX + mScrollX); 2287 int contentY = viewToContentY(mLastTouchY + mScrollY); 2288 String ref = nativeImageURI(contentX, contentY); 2289 Bundle data = msg.getData(); 2290 data.putString("url", ref); 2291 msg.setData(data); 2292 msg.sendToTarget(); 2293 } 2294 2295 static int pinLoc(int x, int viewMax, int docMax) { 2296// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2297 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2298 // pin the short document to the top/left of the screen 2299 x = 0; 2300// Log.d(LOGTAG, "--- center " + x); 2301 } else if (x < 0) { 2302 x = 0; 2303// Log.d(LOGTAG, "--- zero"); 2304 } else if (x + viewMax > docMax) { 2305 x = docMax - viewMax; 2306// Log.d(LOGTAG, "--- pin " + x); 2307 } 2308 return x; 2309 } 2310 2311 // Expects x in view coordinates 2312 int pinLocX(int x) { 2313 if (mInOverScrollMode) return x; 2314 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2315 } 2316 2317 // Expects y in view coordinates 2318 int pinLocY(int y) { 2319 if (mInOverScrollMode) return y; 2320 return pinLoc(y, getViewHeightWithTitle(), 2321 computeRealVerticalScrollRange() + getTitleHeight()); 2322 } 2323 2324 /** 2325 * A title bar which is embedded in this WebView, and scrolls along with it 2326 * vertically, but not horizontally. 2327 */ 2328 private View mTitleBar; 2329 2330 /** 2331 * Add or remove a title bar to be embedded into the WebView, and scroll 2332 * along with it vertically, while remaining in view horizontally. Pass 2333 * null to remove the title bar from the WebView, and return to drawing 2334 * the WebView normally without translating to account for the title bar. 2335 * @hide 2336 */ 2337 public void setEmbeddedTitleBar(View v) { 2338 if (mTitleBar == v) return; 2339 if (mTitleBar != null) { 2340 removeView(mTitleBar); 2341 } 2342 if (null != v) { 2343 addView(v, new AbsoluteLayout.LayoutParams( 2344 ViewGroup.LayoutParams.MATCH_PARENT, 2345 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2346 } 2347 mTitleBar = v; 2348 } 2349 2350 /** 2351 * Given a distance in view space, convert it to content space. Note: this 2352 * does not reflect translation, just scaling, so this should not be called 2353 * with coordinates, but should be called for dimensions like width or 2354 * height. 2355 */ 2356 private int viewToContentDimension(int d) { 2357 return Math.round(d * mZoomManager.getInvScale()); 2358 } 2359 2360 /** 2361 * Given an x coordinate in view space, convert it to content space. Also 2362 * may be used for absolute heights (such as for the WebTextView's 2363 * textSize, which is unaffected by the height of the title bar). 2364 */ 2365 /*package*/ int viewToContentX(int x) { 2366 return viewToContentDimension(x); 2367 } 2368 2369 /** 2370 * Given a y coordinate in view space, convert it to content space. 2371 * Takes into account the height of the title bar if there is one 2372 * embedded into the WebView. 2373 */ 2374 /*package*/ int viewToContentY(int y) { 2375 return viewToContentDimension(y - getTitleHeight()); 2376 } 2377 2378 /** 2379 * Given a x coordinate in view space, convert it to content space. 2380 * Returns the result as a float. 2381 */ 2382 private float viewToContentXf(int x) { 2383 return x * mZoomManager.getInvScale(); 2384 } 2385 2386 /** 2387 * Given a y coordinate in view space, convert it to content space. 2388 * Takes into account the height of the title bar if there is one 2389 * embedded into the WebView. Returns the result as a float. 2390 */ 2391 private float viewToContentYf(int y) { 2392 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2393 } 2394 2395 /** 2396 * Given a distance in content space, convert it to view space. Note: this 2397 * does not reflect translation, just scaling, so this should not be called 2398 * with coordinates, but should be called for dimensions like width or 2399 * height. 2400 */ 2401 /*package*/ int contentToViewDimension(int d) { 2402 return Math.round(d * mZoomManager.getScale()); 2403 } 2404 2405 /** 2406 * Given an x coordinate in content space, convert it to view 2407 * space. 2408 */ 2409 /*package*/ int contentToViewX(int x) { 2410 return contentToViewDimension(x); 2411 } 2412 2413 /** 2414 * Given a y coordinate in content space, convert it to view 2415 * space. Takes into account the height of the title bar. 2416 */ 2417 /*package*/ int contentToViewY(int y) { 2418 return contentToViewDimension(y) + getTitleHeight(); 2419 } 2420 2421 private Rect contentToViewRect(Rect x) { 2422 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2423 contentToViewX(x.right), contentToViewY(x.bottom)); 2424 } 2425 2426 /* To invalidate a rectangle in content coordinates, we need to transform 2427 the rect into view coordinates, so we can then call invalidate(...). 2428 2429 Normally, we would just call contentToView[XY](...), which eventually 2430 calls Math.round(coordinate * mActualScale). However, for invalidates, 2431 we need to account for the slop that occurs with antialiasing. To 2432 address that, we are a little more liberal in the size of the rect that 2433 we invalidate. 2434 2435 This liberal calculation calls floor() for the top/left, and ceil() for 2436 the bottom/right coordinates. This catches the possible extra pixels of 2437 antialiasing that we might have missed with just round(). 2438 */ 2439 2440 // Called by JNI to invalidate the View, given rectangle coordinates in 2441 // content space 2442 private void viewInvalidate(int l, int t, int r, int b) { 2443 final float scale = mZoomManager.getScale(); 2444 final int dy = getTitleHeight(); 2445 invalidate((int)Math.floor(l * scale), 2446 (int)Math.floor(t * scale) + dy, 2447 (int)Math.ceil(r * scale), 2448 (int)Math.ceil(b * scale) + dy); 2449 } 2450 2451 // Called by JNI to invalidate the View after a delay, given rectangle 2452 // coordinates in content space 2453 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2454 final float scale = mZoomManager.getScale(); 2455 final int dy = getTitleHeight(); 2456 postInvalidateDelayed(delay, 2457 (int)Math.floor(l * scale), 2458 (int)Math.floor(t * scale) + dy, 2459 (int)Math.ceil(r * scale), 2460 (int)Math.ceil(b * scale) + dy); 2461 } 2462 2463 private void invalidateContentRect(Rect r) { 2464 viewInvalidate(r.left, r.top, r.right, r.bottom); 2465 } 2466 2467 // stop the scroll animation, and don't let a subsequent fling add 2468 // to the existing velocity 2469 private void abortAnimation() { 2470 mScroller.abortAnimation(); 2471 mLastVelocity = 0; 2472 } 2473 2474 /* call from webcoreview.draw(), so we're still executing in the UI thread 2475 */ 2476 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2477 2478 // premature data from webkit, ignore 2479 if ((w | h) == 0) { 2480 return; 2481 } 2482 2483 // don't abort a scroll animation if we didn't change anything 2484 if (mContentWidth != w || mContentHeight != h) { 2485 // record new dimensions 2486 mContentWidth = w; 2487 mContentHeight = h; 2488 // If history Picture is drawn, don't update scroll. They will be 2489 // updated when we get out of that mode. 2490 if (!mDrawHistory) { 2491 // repin our scroll, taking into account the new content size 2492 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2493 if (!mScroller.isFinished()) { 2494 // We are in the middle of a scroll. Repin the final scroll 2495 // position. 2496 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2497 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2498 } 2499 } 2500 } 2501 contentSizeChanged(updateLayout); 2502 } 2503 2504 // Used to avoid sending many visible rect messages. 2505 private Rect mLastVisibleRectSent; 2506 private Rect mLastGlobalRect; 2507 2508 Rect sendOurVisibleRect() { 2509 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2510 Rect rect = new Rect(); 2511 calcOurContentVisibleRect(rect); 2512 // Rect.equals() checks for null input. 2513 if (!rect.equals(mLastVisibleRectSent)) { 2514 Point pos = new Point(rect.left, rect.top); 2515 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2516 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2517 nativeMoveGeneration(), mUserScroll ? 1 : 0, pos); 2518 mLastVisibleRectSent = rect; 2519 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2520 } 2521 Rect globalRect = new Rect(); 2522 if (getGlobalVisibleRect(globalRect) 2523 && !globalRect.equals(mLastGlobalRect)) { 2524 if (DebugFlags.WEB_VIEW) { 2525 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2526 + globalRect.top + ",r=" + globalRect.right + ",b=" 2527 + globalRect.bottom); 2528 } 2529 // TODO: the global offset is only used by windowRect() 2530 // in ChromeClientAndroid ; other clients such as touch 2531 // and mouse events could return view + screen relative points. 2532 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2533 mLastGlobalRect = globalRect; 2534 } 2535 return rect; 2536 } 2537 2538 // Sets r to be the visible rectangle of our webview in view coordinates 2539 private void calcOurVisibleRect(Rect r) { 2540 Point p = new Point(); 2541 getGlobalVisibleRect(r, p); 2542 r.offset(-p.x, -p.y); 2543 } 2544 2545 // Sets r to be our visible rectangle in content coordinates 2546 private void calcOurContentVisibleRect(Rect r) { 2547 calcOurVisibleRect(r); 2548 r.left = viewToContentX(r.left); 2549 // viewToContentY will remove the total height of the title bar. Add 2550 // the visible height back in to account for the fact that if the title 2551 // bar is partially visible, the part of the visible rect which is 2552 // displaying our content is displaced by that amount. 2553 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2554 r.right = viewToContentX(r.right); 2555 r.bottom = viewToContentY(r.bottom); 2556 } 2557 2558 // Sets r to be our visible rectangle in content coordinates. We use this 2559 // method on the native side to compute the position of the fixed layers. 2560 // Uses floating coordinates (necessary to correctly place elements when 2561 // the scale factor is not 1) 2562 private void calcOurContentVisibleRectF(RectF r) { 2563 Rect ri = new Rect(0,0,0,0); 2564 calcOurVisibleRect(ri); 2565 r.left = viewToContentXf(ri.left); 2566 // viewToContentY will remove the total height of the title bar. Add 2567 // the visible height back in to account for the fact that if the title 2568 // bar is partially visible, the part of the visible rect which is 2569 // displaying our content is displaced by that amount. 2570 r.top = viewToContentYf(ri.top + getVisibleTitleHeight()); 2571 r.right = viewToContentXf(ri.right); 2572 r.bottom = viewToContentYf(ri.bottom); 2573 } 2574 2575 static class ViewSizeData { 2576 int mWidth; 2577 int mHeight; 2578 float mHeightWidthRatio; 2579 int mActualViewHeight; 2580 int mTextWrapWidth; 2581 int mAnchorX; 2582 int mAnchorY; 2583 float mScale; 2584 boolean mIgnoreHeight; 2585 } 2586 2587 /** 2588 * Compute unzoomed width and height, and if they differ from the last 2589 * values we sent, send them to webkit (to be used as new viewport) 2590 * 2591 * @param force ensures that the message is sent to webkit even if the width 2592 * or height has not changed since the last message 2593 * 2594 * @return true if new values were sent 2595 */ 2596 boolean sendViewSizeZoom(boolean force) { 2597 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2598 2599 int viewWidth = getViewWidth(); 2600 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2601 // This height could be fixed and be different from actual visible height. 2602 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2603 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2604 // Make the ratio more accurate than (newHeight / newWidth), since the 2605 // latter both are calculated and rounded. 2606 float heightWidthRatio = (float) viewHeight / viewWidth; 2607 /* 2608 * Because the native side may have already done a layout before the 2609 * View system was able to measure us, we have to send a height of 0 to 2610 * remove excess whitespace when we grow our width. This will trigger a 2611 * layout and a change in content size. This content size change will 2612 * mean that contentSizeChanged will either call this method directly or 2613 * indirectly from onSizeChanged. 2614 */ 2615 if (newWidth > mLastWidthSent && mWrapContent) { 2616 newHeight = 0; 2617 heightWidthRatio = 0; 2618 } 2619 // Actual visible height. 2620 int actualViewHeight = getViewHeight(); 2621 // Avoid sending another message if the dimensions have not changed. 2622 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2623 actualViewHeight != mLastActualHeightSent) { 2624 ViewSizeData data = new ViewSizeData(); 2625 data.mWidth = newWidth; 2626 data.mHeight = newHeight; 2627 data.mHeightWidthRatio = heightWidthRatio; 2628 data.mActualViewHeight = actualViewHeight; 2629 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2630 data.mScale = mZoomManager.getScale(); 2631 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2632 && !mHeightCanMeasure; 2633 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2634 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2635 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2636 mLastWidthSent = newWidth; 2637 mLastHeightSent = newHeight; 2638 mLastActualHeightSent = actualViewHeight; 2639 mZoomManager.clearDocumentAnchor(); 2640 return true; 2641 } 2642 return false; 2643 } 2644 2645 private int computeRealHorizontalScrollRange() { 2646 if (mDrawHistory) { 2647 return mHistoryWidth; 2648 } else { 2649 // to avoid rounding error caused unnecessary scrollbar, use floor 2650 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2651 } 2652 } 2653 2654 @Override 2655 protected int computeHorizontalScrollRange() { 2656 int range = computeRealHorizontalScrollRange(); 2657 2658 // Adjust reported range if overscrolled to compress the scroll bars 2659 final int scrollX = mScrollX; 2660 final int overscrollRight = computeMaxScrollX(); 2661 if (scrollX < 0) { 2662 range -= scrollX; 2663 } else if (scrollX > overscrollRight) { 2664 range += scrollX - overscrollRight; 2665 } 2666 2667 return range; 2668 } 2669 2670 @Override 2671 protected int computeHorizontalScrollOffset() { 2672 return Math.max(mScrollX, 0); 2673 } 2674 2675 private int computeRealVerticalScrollRange() { 2676 if (mDrawHistory) { 2677 return mHistoryHeight; 2678 } else { 2679 // to avoid rounding error caused unnecessary scrollbar, use floor 2680 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2681 } 2682 } 2683 2684 @Override 2685 protected int computeVerticalScrollRange() { 2686 int range = computeRealVerticalScrollRange(); 2687 2688 // Adjust reported range if overscrolled to compress the scroll bars 2689 final int scrollY = mScrollY; 2690 final int overscrollBottom = computeMaxScrollY(); 2691 if (scrollY < 0) { 2692 range -= scrollY; 2693 } else if (scrollY > overscrollBottom) { 2694 range += scrollY - overscrollBottom; 2695 } 2696 2697 return range; 2698 } 2699 2700 @Override 2701 protected int computeVerticalScrollOffset() { 2702 return Math.max(mScrollY - getTitleHeight(), 0); 2703 } 2704 2705 @Override 2706 protected int computeVerticalScrollExtent() { 2707 return getViewHeight(); 2708 } 2709 2710 /** @hide */ 2711 @Override 2712 protected void onDrawVerticalScrollBar(Canvas canvas, 2713 Drawable scrollBar, 2714 int l, int t, int r, int b) { 2715 if (mScrollY < 0) { 2716 t -= mScrollY; 2717 } 2718 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2719 scrollBar.draw(canvas); 2720 } 2721 2722 @Override 2723 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2724 boolean clampedY) { 2725 // Special-case layer scrolling so that we do not trigger normal scroll 2726 // updating. 2727 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2728 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2729 mScrollingLayerRect.left = scrollX; 2730 mScrollingLayerRect.top = scrollY; 2731 invalidate(); 2732 return; 2733 } 2734 mInOverScrollMode = false; 2735 int maxX = computeMaxScrollX(); 2736 int maxY = computeMaxScrollY(); 2737 if (maxX == 0) { 2738 // do not over scroll x if the page just fits the screen 2739 scrollX = pinLocX(scrollX); 2740 } else if (scrollX < 0 || scrollX > maxX) { 2741 mInOverScrollMode = true; 2742 } 2743 if (scrollY < 0 || scrollY > maxY) { 2744 mInOverScrollMode = true; 2745 } 2746 2747 int oldX = mScrollX; 2748 int oldY = mScrollY; 2749 2750 super.scrollTo(scrollX, scrollY); 2751 2752 if (mOverScrollGlow != null) { 2753 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2754 } 2755 } 2756 2757 /** 2758 * Get the url for the current page. This is not always the same as the url 2759 * passed to WebViewClient.onPageStarted because although the load for 2760 * that url has begun, the current page may not have changed. 2761 * @return The url for the current page. 2762 */ 2763 public String getUrl() { 2764 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2765 return h != null ? h.getUrl() : null; 2766 } 2767 2768 /** 2769 * Get the original url for the current page. This is not always the same 2770 * as the url passed to WebViewClient.onPageStarted because although the 2771 * load for that url has begun, the current page may not have changed. 2772 * Also, there may have been redirects resulting in a different url to that 2773 * originally requested. 2774 * @return The url that was originally requested for the current page. 2775 */ 2776 public String getOriginalUrl() { 2777 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2778 return h != null ? h.getOriginalUrl() : null; 2779 } 2780 2781 /** 2782 * Get the title for the current page. This is the title of the current page 2783 * until WebViewClient.onReceivedTitle is called. 2784 * @return The title for the current page. 2785 */ 2786 public String getTitle() { 2787 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2788 return h != null ? h.getTitle() : null; 2789 } 2790 2791 /** 2792 * Get the favicon for the current page. This is the favicon of the current 2793 * page until WebViewClient.onReceivedIcon is called. 2794 * @return The favicon for the current page. 2795 */ 2796 public Bitmap getFavicon() { 2797 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2798 return h != null ? h.getFavicon() : null; 2799 } 2800 2801 /** 2802 * Get the touch icon url for the apple-touch-icon <link> element, or 2803 * a URL on this site's server pointing to the standard location of a 2804 * touch icon. 2805 * @hide 2806 */ 2807 public String getTouchIconUrl() { 2808 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2809 return h != null ? h.getTouchIconUrl() : null; 2810 } 2811 2812 /** 2813 * Get the progress for the current page. 2814 * @return The progress for the current page between 0 and 100. 2815 */ 2816 public int getProgress() { 2817 return mCallbackProxy.getProgress(); 2818 } 2819 2820 /** 2821 * @return the height of the HTML content. 2822 */ 2823 public int getContentHeight() { 2824 return mContentHeight; 2825 } 2826 2827 /** 2828 * @return the width of the HTML content. 2829 * @hide 2830 */ 2831 public int getContentWidth() { 2832 return mContentWidth; 2833 } 2834 2835 /** 2836 * Pause all layout, parsing, and JavaScript timers for all webviews. This 2837 * is a global requests, not restricted to just this webview. This can be 2838 * useful if the application has been paused. 2839 */ 2840 public void pauseTimers() { 2841 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2842 } 2843 2844 /** 2845 * Resume all layout, parsing, and JavaScript timers for all webviews. 2846 * This will resume dispatching all timers. 2847 */ 2848 public void resumeTimers() { 2849 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2850 } 2851 2852 /** 2853 * Call this to pause any extra processing associated with this WebView and 2854 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 2855 * is taken offscreen, this could be called to reduce unnecessary CPU or 2856 * network traffic. When the WebView is again "active", call onResume(). 2857 * 2858 * Note that this differs from pauseTimers(), which affects all WebViews. 2859 */ 2860 public void onPause() { 2861 if (!mIsPaused) { 2862 mIsPaused = true; 2863 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2864 } 2865 } 2866 2867 /** 2868 * Call this to resume a WebView after a previous call to onPause(). 2869 */ 2870 public void onResume() { 2871 if (mIsPaused) { 2872 mIsPaused = false; 2873 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2874 } 2875 } 2876 2877 /** 2878 * Returns true if the view is paused, meaning onPause() was called. Calling 2879 * onResume() sets the paused state back to false. 2880 * @hide 2881 */ 2882 public boolean isPaused() { 2883 return mIsPaused; 2884 } 2885 2886 /** 2887 * Call this to inform the view that memory is low so that it can 2888 * free any available memory. 2889 */ 2890 public void freeMemory() { 2891 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2892 } 2893 2894 /** 2895 * Clear the resource cache. Note that the cache is per-application, so 2896 * this will clear the cache for all WebViews used. 2897 * 2898 * @param includeDiskFiles If false, only the RAM cache is cleared. 2899 */ 2900 public void clearCache(boolean includeDiskFiles) { 2901 // Note: this really needs to be a static method as it clears cache for all 2902 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2903 // we can't make this static. 2904 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2905 includeDiskFiles ? 1 : 0, 0); 2906 } 2907 2908 /** 2909 * Make sure that clearing the form data removes the adapter from the 2910 * currently focused textfield if there is one. 2911 */ 2912 public void clearFormData() { 2913 if (inEditingMode()) { 2914 AutoCompleteAdapter adapter = null; 2915 mWebTextView.setAdapterCustom(adapter); 2916 } 2917 } 2918 2919 /** 2920 * Tell the WebView to clear its internal back/forward list. 2921 */ 2922 public void clearHistory() { 2923 mCallbackProxy.getBackForwardList().setClearPending(); 2924 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2925 } 2926 2927 /** 2928 * Clear the SSL preferences table stored in response to proceeding with SSL 2929 * certificate errors. 2930 */ 2931 public void clearSslPreferences() { 2932 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2933 } 2934 2935 /** 2936 * Return the WebBackForwardList for this WebView. This contains the 2937 * back/forward list for use in querying each item in the history stack. 2938 * This is a copy of the private WebBackForwardList so it contains only a 2939 * snapshot of the current state. Multiple calls to this method may return 2940 * different objects. The object returned from this method will not be 2941 * updated to reflect any new state. 2942 */ 2943 public WebBackForwardList copyBackForwardList() { 2944 return mCallbackProxy.getBackForwardList().clone(); 2945 } 2946 2947 /* 2948 * Highlight and scroll to the next occurance of String in findAll. 2949 * Wraps the page infinitely, and scrolls. Must be called after 2950 * calling findAll. 2951 * 2952 * @param forward Direction to search. 2953 */ 2954 public void findNext(boolean forward) { 2955 if (0 == mNativeClass) return; // client isn't initialized 2956 nativeFindNext(forward); 2957 } 2958 2959 /* 2960 * Find all instances of find on the page and highlight them. 2961 * @param find String to find. 2962 * @return int The number of occurances of the String "find" 2963 * that were found. 2964 */ 2965 public int findAll(String find) { 2966 if (0 == mNativeClass) return 0; // client isn't initialized 2967 int result = find != null ? nativeFindAll(find.toLowerCase(), 2968 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 2969 invalidate(); 2970 mLastFind = find; 2971 return result; 2972 } 2973 2974 /** 2975 * Start an ActionMode for finding text in this WebView. 2976 * @param text If non-null, will be the initial text to search for. 2977 * Otherwise, the last String searched for in this WebView will 2978 * be used to start. 2979 * @param showIme If true, show the IME, assuming the user will begin typing. 2980 * If false and text is non-null, perform a find all. 2981 * @return boolean True if the find dialog is shown, false otherwise. 2982 */ 2983 public boolean showFindDialog(String text, boolean showIme) { 2984 FindActionModeCallback callback = new FindActionModeCallback(mContext); 2985 if (startActionMode(callback) == null) { 2986 // Could not start the action mode, so end Find on page 2987 return false; 2988 } 2989 mFindCallback = callback; 2990 setFindIsUp(true); 2991 mFindCallback.setWebView(this); 2992 if (showIme) { 2993 mFindCallback.showSoftInput(); 2994 } else if (text != null) { 2995 mFindCallback.setText(text); 2996 mFindCallback.findAll(); 2997 return true; 2998 } 2999 if (text == null) { 3000 text = mLastFind; 3001 } 3002 if (text != null) { 3003 mFindCallback.setText(text); 3004 } 3005 return true; 3006 } 3007 3008 /** 3009 * Keep track of the find callback so that we can remove its titlebar if 3010 * necessary. 3011 */ 3012 private FindActionModeCallback mFindCallback; 3013 3014 /** 3015 * Toggle whether the find dialog is showing, for both native and Java. 3016 */ 3017 private void setFindIsUp(boolean isUp) { 3018 mFindIsUp = isUp; 3019 if (0 == mNativeClass) return; // client isn't initialized 3020 nativeSetFindIsUp(isUp); 3021 } 3022 3023 /** 3024 * Return the index of the currently highlighted match. 3025 */ 3026 int findIndex() { 3027 if (0 == mNativeClass) return -1; 3028 return nativeFindIndex(); 3029 } 3030 3031 // Used to know whether the find dialog is open. Affects whether 3032 // or not we draw the highlights for matches. 3033 private boolean mFindIsUp; 3034 3035 // Keep track of the last string sent, so we can search again when find is 3036 // reopened. 3037 private String mLastFind; 3038 3039 /** 3040 * Return the first substring consisting of the address of a physical 3041 * location. Currently, only addresses in the United States are detected, 3042 * and consist of: 3043 * - a house number 3044 * - a street name 3045 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3046 * - a city name 3047 * - a state or territory, either spelled out or two-letter abbr. 3048 * - an optional 5 digit or 9 digit zip code. 3049 * 3050 * All names must be correctly capitalized, and the zip code, if present, 3051 * must be valid for the state. The street type must be a standard USPS 3052 * spelling or abbreviation. The state or territory must also be spelled 3053 * or abbreviated using USPS standards. The house number may not exceed 3054 * five digits. 3055 * @param addr The string to search for addresses. 3056 * 3057 * @return the address, or if no address is found, return null. 3058 */ 3059 public static String findAddress(String addr) { 3060 return findAddress(addr, false); 3061 } 3062 3063 /** 3064 * @hide 3065 * Return the first substring consisting of the address of a physical 3066 * location. Currently, only addresses in the United States are detected, 3067 * and consist of: 3068 * - a house number 3069 * - a street name 3070 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3071 * - a city name 3072 * - a state or territory, either spelled out or two-letter abbr. 3073 * - an optional 5 digit or 9 digit zip code. 3074 * 3075 * Names are optionally capitalized, and the zip code, if present, 3076 * must be valid for the state. The street type must be a standard USPS 3077 * spelling or abbreviation. The state or territory must also be spelled 3078 * or abbreviated using USPS standards. The house number may not exceed 3079 * five digits. 3080 * @param addr The string to search for addresses. 3081 * @param caseInsensitive addr Set to true to make search ignore case. 3082 * 3083 * @return the address, or if no address is found, return null. 3084 */ 3085 public static String findAddress(String addr, boolean caseInsensitive) { 3086 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3087 } 3088 3089 /* 3090 * Clear the highlighting surrounding text matches created by findAll. 3091 */ 3092 public void clearMatches() { 3093 if (mNativeClass == 0) 3094 return; 3095 nativeSetFindIsEmpty(); 3096 invalidate(); 3097 } 3098 3099 /** 3100 * Called when the find ActionMode ends. 3101 */ 3102 void notifyFindDialogDismissed() { 3103 mFindCallback = null; 3104 if (mWebViewCore == null) { 3105 return; 3106 } 3107 clearMatches(); 3108 setFindIsUp(false); 3109 // Now that the dialog has been removed, ensure that we scroll to a 3110 // location that is not beyond the end of the page. 3111 pinScrollTo(mScrollX, mScrollY, false, 0); 3112 invalidate(); 3113 } 3114 3115 /** 3116 * Query the document to see if it contains any image references. The 3117 * message object will be dispatched with arg1 being set to 1 if images 3118 * were found and 0 if the document does not reference any images. 3119 * @param response The message that will be dispatched with the result. 3120 */ 3121 public void documentHasImages(Message response) { 3122 if (response == null) { 3123 return; 3124 } 3125 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3126 } 3127 3128 /** 3129 * Request the scroller to abort any ongoing animation 3130 * 3131 * @hide 3132 */ 3133 public void stopScroll() { 3134 mScroller.forceFinished(true); 3135 mLastVelocity = 0; 3136 } 3137 3138 @Override 3139 public void computeScroll() { 3140 if (mScroller.computeScrollOffset()) { 3141 int oldX = mScrollX; 3142 int oldY = mScrollY; 3143 int x = mScroller.getCurrX(); 3144 int y = mScroller.getCurrY(); 3145 invalidate(); // So we draw again 3146 3147 if (!mScroller.isFinished()) { 3148 int rangeX = computeMaxScrollX(); 3149 int rangeY = computeMaxScrollY(); 3150 int overflingDistance = mOverflingDistance; 3151 3152 // Use the layer's scroll data if needed. 3153 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3154 oldX = mScrollingLayerRect.left; 3155 oldY = mScrollingLayerRect.top; 3156 rangeX = mScrollingLayerRect.right; 3157 rangeY = mScrollingLayerRect.bottom; 3158 // No overscrolling for layers. 3159 overflingDistance = 0; 3160 } 3161 3162 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3163 rangeX, rangeY, 3164 overflingDistance, overflingDistance, false); 3165 3166 if (mOverScrollGlow != null) { 3167 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3168 } 3169 } else { 3170 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3171 mScrollX = x; 3172 mScrollY = y; 3173 } else { 3174 // Update the layer position instead of WebView. 3175 nativeScrollLayer(mScrollingLayer, x, y); 3176 mScrollingLayerRect.left = x; 3177 mScrollingLayerRect.top = y; 3178 } 3179 abortAnimation(); 3180 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3181 WebViewCore.resumePriority(); 3182 if (!mSelectingText) { 3183 WebViewCore.resumeUpdatePicture(mWebViewCore); 3184 } 3185 } 3186 } else { 3187 super.computeScroll(); 3188 } 3189 } 3190 3191 private static int computeDuration(int dx, int dy) { 3192 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3193 int duration = distance * 1000 / STD_SPEED; 3194 return Math.min(duration, MAX_DURATION); 3195 } 3196 3197 // helper to pin the scrollBy parameters (already in view coordinates) 3198 // returns true if the scroll was changed 3199 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3200 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3201 } 3202 // helper to pin the scrollTo parameters (already in view coordinates) 3203 // returns true if the scroll was changed 3204 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3205 x = pinLocX(x); 3206 y = pinLocY(y); 3207 int dx = x - mScrollX; 3208 int dy = y - mScrollY; 3209 3210 if ((dx | dy) == 0) { 3211 return false; 3212 } 3213 abortAnimation(); 3214 if (animate) { 3215 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3216 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3217 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3218 awakenScrollBars(mScroller.getDuration()); 3219 invalidate(); 3220 } else { 3221 scrollTo(x, y); 3222 } 3223 return true; 3224 } 3225 3226 // Scale from content to view coordinates, and pin. 3227 // Also called by jni webview.cpp 3228 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3229 if (mDrawHistory) { 3230 // disallow WebView to change the scroll position as History Picture 3231 // is used in the view system. 3232 // TODO: as we switchOutDrawHistory when trackball or navigation 3233 // keys are hit, this should be safe. Right? 3234 return false; 3235 } 3236 cx = contentToViewDimension(cx); 3237 cy = contentToViewDimension(cy); 3238 if (mHeightCanMeasure) { 3239 // move our visible rect according to scroll request 3240 if (cy != 0) { 3241 Rect tempRect = new Rect(); 3242 calcOurVisibleRect(tempRect); 3243 tempRect.offset(cx, cy); 3244 requestRectangleOnScreen(tempRect); 3245 } 3246 // FIXME: We scroll horizontally no matter what because currently 3247 // ScrollView and ListView will not scroll horizontally. 3248 // FIXME: Why do we only scroll horizontally if there is no 3249 // vertical scroll? 3250// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3251 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3252 } else { 3253 return pinScrollBy(cx, cy, animate, 0); 3254 } 3255 } 3256 3257 /** 3258 * Called by CallbackProxy when the page starts loading. 3259 * @param url The URL of the page which has started loading. 3260 */ 3261 /* package */ void onPageStarted(String url) { 3262 // every time we start a new page, we want to reset the 3263 // WebView certificate: if the new site is secure, we 3264 // will reload it and get a new certificate set; 3265 // if the new site is not secure, the certificate must be 3266 // null, and that will be the case 3267 setCertificate(null); 3268 3269 // reset the flag since we set to true in if need after 3270 // loading is see onPageFinished(Url) 3271 mAccessibilityScriptInjected = false; 3272 } 3273 3274 /** 3275 * Called by CallbackProxy when the page finishes loading. 3276 * @param url The URL of the page which has finished loading. 3277 */ 3278 /* package */ void onPageFinished(String url) { 3279 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3280 // If the user is now on a different page, or has scrolled the page 3281 // past the point where the title bar is offscreen, ignore the 3282 // scroll request. 3283 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3284 && mScrollX == 0 && mScrollY == 0) { 3285 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3286 SLIDE_TITLE_DURATION); 3287 } 3288 mPageThatNeedsToSlideTitleBarOffScreen = null; 3289 } 3290 3291 injectAccessibilityForUrl(url); 3292 } 3293 3294 /** 3295 * This method injects accessibility in the loaded document if accessibility 3296 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3297 * If no URL specific script is found or JavaScript is disabled we fallback to 3298 * the default {@link AccessibilityInjector} implementation. 3299 * </p> 3300 * If the URL has the "axs" paramter set to 1 it has already done the 3301 * script injection so we do nothing. If the parameter is set to 0 3302 * the URL opts out accessibility script injection so we fall back to 3303 * the default {@link AccessibilityInjector}. 3304 * </p> 3305 * Note: If the user has not opted-in the accessibility script injection no scripts 3306 * are injected rather the default {@link AccessibilityInjector} implementation 3307 * is used. 3308 * 3309 * @param url The URL loaded by this {@link WebView}. 3310 */ 3311 private void injectAccessibilityForUrl(String url) { 3312 if (mWebViewCore == null) { 3313 return; 3314 } 3315 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3316 3317 if (!accessibilityManager.isEnabled()) { 3318 // it is possible that accessibility was turned off between reloads 3319 ensureAccessibilityScriptInjectorInstance(false); 3320 return; 3321 } 3322 3323 if (!getSettings().getJavaScriptEnabled()) { 3324 // no JS so we fallback to the basic buil-in support 3325 ensureAccessibilityScriptInjectorInstance(true); 3326 return; 3327 } 3328 3329 // check the URL "axs" parameter to choose appropriate action 3330 int axsParameterValue = getAxsUrlParameterValue(url); 3331 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3332 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3333 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3334 if (onDeviceScriptInjectionEnabled) { 3335 ensureAccessibilityScriptInjectorInstance(false); 3336 // neither script injected nor script injection opted out => we inject 3337 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3338 // TODO: Set this flag after successfull script injection. Maybe upon injection 3339 // the chooser should update the meta tag and we check it to declare success 3340 mAccessibilityScriptInjected = true; 3341 } else { 3342 // injection disabled so we fallback to the basic built-in support 3343 ensureAccessibilityScriptInjectorInstance(true); 3344 } 3345 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3346 // injection opted out so we fallback to the basic buil-in support 3347 ensureAccessibilityScriptInjectorInstance(true); 3348 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3349 ensureAccessibilityScriptInjectorInstance(false); 3350 // the URL provides accessibility but we still need to add our generic script 3351 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3352 } else { 3353 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3354 } 3355 } 3356 3357 /** 3358 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3359 * 3360 * @param present True to ensure an insance, false to ensure no instance. 3361 */ 3362 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3363 if (present) { 3364 if (mAccessibilityInjector == null) { 3365 mAccessibilityInjector = new AccessibilityInjector(this); 3366 } 3367 } else { 3368 mAccessibilityInjector = null; 3369 } 3370 } 3371 3372 /** 3373 * Gets the "axs" URL parameter value. 3374 * 3375 * @param url A url to fetch the paramter from. 3376 * @return The parameter value if such, -1 otherwise. 3377 */ 3378 private int getAxsUrlParameterValue(String url) { 3379 if (mMatchAxsUrlParameterPattern == null) { 3380 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3381 } 3382 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3383 if (matcher.find()) { 3384 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3385 return Integer.parseInt(keyValuePair.split("=")[1]); 3386 } 3387 return -1; 3388 } 3389 3390 /** 3391 * The URL of a page that sent a message to scroll the title bar off screen. 3392 * 3393 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3394 * title bar off the screen. Sometimes, the scroll position is set before 3395 * the page finishes loading. Rather than scrolling while the page is still 3396 * loading, keep track of the URL and new scroll position so we can perform 3397 * the scroll once the page finishes loading. 3398 */ 3399 private String mPageThatNeedsToSlideTitleBarOffScreen; 3400 3401 /** 3402 * The destination Y scroll position to be used when the page finishes 3403 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3404 */ 3405 private int mYDistanceToSlideTitleOffScreen; 3406 3407 // scale from content to view coordinates, and pin 3408 // return true if pin caused the final x/y different than the request cx/cy, 3409 // and a future scroll may reach the request cx/cy after our size has 3410 // changed 3411 // return false if the view scroll to the exact position as it is requested, 3412 // where negative numbers are taken to mean 0 3413 private boolean setContentScrollTo(int cx, int cy) { 3414 if (mDrawHistory) { 3415 // disallow WebView to change the scroll position as History Picture 3416 // is used in the view system. 3417 // One known case where this is called is that WebCore tries to 3418 // restore the scroll position. As history Picture already uses the 3419 // saved scroll position, it is ok to skip this. 3420 return false; 3421 } 3422 int vx; 3423 int vy; 3424 if ((cx | cy) == 0) { 3425 // If the page is being scrolled to (0,0), do not add in the title 3426 // bar's height, and simply scroll to (0,0). (The only other work 3427 // in contentToView_ is to multiply, so this would not change 0.) 3428 vx = 0; 3429 vy = 0; 3430 } else { 3431 vx = contentToViewX(cx); 3432 vy = contentToViewY(cy); 3433 } 3434// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3435// vx + " " + vy + "]"); 3436 // Some mobile sites attempt to scroll the title bar off the page by 3437 // scrolling to (0,1). If we are at the top left corner of the 3438 // page, assume this is an attempt to scroll off the title bar, and 3439 // animate the title bar off screen slowly enough that the user can see 3440 // it. 3441 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3442 && mTitleBar != null) { 3443 // FIXME: 100 should be defined somewhere as our max progress. 3444 if (getProgress() < 100) { 3445 // Wait to scroll the title bar off screen until the page has 3446 // finished loading. Keep track of the URL and the destination 3447 // Y position 3448 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3449 mYDistanceToSlideTitleOffScreen = vy; 3450 } else { 3451 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3452 } 3453 // Since we are animating, we have not yet reached the desired 3454 // scroll position. Do not return true to request another attempt 3455 return false; 3456 } 3457 pinScrollTo(vx, vy, false, 0); 3458 // If the request was to scroll to a negative coordinate, treat it as if 3459 // it was a request to scroll to 0 3460 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3461 return true; 3462 } else { 3463 return false; 3464 } 3465 } 3466 3467 // scale from content to view coordinates, and pin 3468 private void spawnContentScrollTo(int cx, int cy) { 3469 if (mDrawHistory) { 3470 // disallow WebView to change the scroll position as History Picture 3471 // is used in the view system. 3472 return; 3473 } 3474 int vx = contentToViewX(cx); 3475 int vy = contentToViewY(cy); 3476 pinScrollTo(vx, vy, true, 0); 3477 } 3478 3479 /** 3480 * These are from webkit, and are in content coordinate system (unzoomed) 3481 */ 3482 private void contentSizeChanged(boolean updateLayout) { 3483 // suppress 0,0 since we usually see real dimensions soon after 3484 // this avoids drawing the prev content in a funny place. If we find a 3485 // way to consolidate these notifications, this check may become 3486 // obsolete 3487 if ((mContentWidth | mContentHeight) == 0) { 3488 return; 3489 } 3490 3491 if (mHeightCanMeasure) { 3492 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3493 || updateLayout) { 3494 requestLayout(); 3495 } 3496 } else if (mWidthCanMeasure) { 3497 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3498 || updateLayout) { 3499 requestLayout(); 3500 } 3501 } else { 3502 // If we don't request a layout, try to send our view size to the 3503 // native side to ensure that WebCore has the correct dimensions. 3504 sendViewSizeZoom(false); 3505 } 3506 } 3507 3508 /** 3509 * Set the WebViewClient that will receive various notifications and 3510 * requests. This will replace the current handler. 3511 * @param client An implementation of WebViewClient. 3512 */ 3513 public void setWebViewClient(WebViewClient client) { 3514 mCallbackProxy.setWebViewClient(client); 3515 } 3516 3517 /** 3518 * Gets the WebViewClient 3519 * @return the current WebViewClient instance. 3520 * 3521 *@hide pending API council approval. 3522 */ 3523 public WebViewClient getWebViewClient() { 3524 return mCallbackProxy.getWebViewClient(); 3525 } 3526 3527 /** 3528 * Register the interface to be used when content can not be handled by 3529 * the rendering engine, and should be downloaded instead. This will replace 3530 * the current handler. 3531 * @param listener An implementation of DownloadListener. 3532 */ 3533 public void setDownloadListener(DownloadListener listener) { 3534 mCallbackProxy.setDownloadListener(listener); 3535 } 3536 3537 /** 3538 * Set the chrome handler. This is an implementation of WebChromeClient for 3539 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3540 * This will replace the current handler. 3541 * @param client An implementation of WebChromeClient. 3542 */ 3543 public void setWebChromeClient(WebChromeClient client) { 3544 mCallbackProxy.setWebChromeClient(client); 3545 } 3546 3547 /** 3548 * Gets the chrome handler. 3549 * @return the current WebChromeClient instance. 3550 * 3551 * @hide API council approval. 3552 */ 3553 public WebChromeClient getWebChromeClient() { 3554 return mCallbackProxy.getWebChromeClient(); 3555 } 3556 3557 /** 3558 * Set the back/forward list client. This is an implementation of 3559 * WebBackForwardListClient for handling new items and changes in the 3560 * history index. 3561 * @param client An implementation of WebBackForwardListClient. 3562 * {@hide} 3563 */ 3564 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3565 mCallbackProxy.setWebBackForwardListClient(client); 3566 } 3567 3568 /** 3569 * Gets the WebBackForwardListClient. 3570 * {@hide} 3571 */ 3572 public WebBackForwardListClient getWebBackForwardListClient() { 3573 return mCallbackProxy.getWebBackForwardListClient(); 3574 } 3575 3576 /** 3577 * Set the Picture listener. This is an interface used to receive 3578 * notifications of a new Picture. 3579 * @param listener An implementation of WebView.PictureListener. 3580 */ 3581 public void setPictureListener(PictureListener listener) { 3582 mPictureListener = listener; 3583 } 3584 3585 /** 3586 * {@hide} 3587 */ 3588 /* FIXME: Debug only! Remove for SDK! */ 3589 public void externalRepresentation(Message callback) { 3590 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3591 } 3592 3593 /** 3594 * {@hide} 3595 */ 3596 /* FIXME: Debug only! Remove for SDK! */ 3597 public void documentAsText(Message callback) { 3598 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3599 } 3600 3601 /** 3602 * Use this function to bind an object to JavaScript so that the 3603 * methods can be accessed from JavaScript. 3604 * <p><strong>IMPORTANT:</strong> 3605 * <ul> 3606 * <li> Using addJavascriptInterface() allows JavaScript to control your 3607 * application. This can be a very useful feature or a dangerous security 3608 * issue. When the HTML in the WebView is untrustworthy (for example, part 3609 * or all of the HTML is provided by some person or process), then an 3610 * attacker could inject HTML that will execute your code and possibly any 3611 * code of the attacker's choosing.<br> 3612 * Do not use addJavascriptInterface() unless all of the HTML in this 3613 * WebView was written by you.</li> 3614 * <li> The Java object that is bound runs in another thread and not in 3615 * the thread that it was constructed in.</li> 3616 * </ul></p> 3617 * @param obj The class instance to bind to JavaScript, null instances are 3618 * ignored. 3619 * @param interfaceName The name to used to expose the instance in 3620 * JavaScript. 3621 */ 3622 public void addJavascriptInterface(Object obj, String interfaceName) { 3623 if (obj == null) { 3624 return; 3625 } 3626 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3627 arg.mObject = obj; 3628 arg.mInterfaceName = interfaceName; 3629 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3630 } 3631 3632 /** 3633 * Removes a previously added JavaScript interface with the given name. 3634 * @param interfaceName The name of the interface to remove. 3635 */ 3636 public void removeJavascriptInterface(String interfaceName) { 3637 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3638 arg.mInterfaceName = interfaceName; 3639 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3640 } 3641 3642 /** 3643 * Return the WebSettings object used to control the settings for this 3644 * WebView. 3645 * @return A WebSettings object that can be used to control this WebView's 3646 * settings. 3647 */ 3648 public WebSettings getSettings() { 3649 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3650 } 3651 3652 /** 3653 * Return the list of currently loaded plugins. 3654 * @return The list of currently loaded plugins. 3655 * 3656 * @deprecated This was used for Gears, which has been deprecated. 3657 */ 3658 @Deprecated 3659 public static synchronized PluginList getPluginList() { 3660 return new PluginList(); 3661 } 3662 3663 /** 3664 * @deprecated This was used for Gears, which has been deprecated. 3665 */ 3666 @Deprecated 3667 public void refreshPlugins(boolean reloadOpenPages) { } 3668 3669 //------------------------------------------------------------------------- 3670 // Override View methods 3671 //------------------------------------------------------------------------- 3672 3673 @Override 3674 protected void finalize() throws Throwable { 3675 try { 3676 destroy(); 3677 } finally { 3678 super.finalize(); 3679 } 3680 } 3681 3682 @Override 3683 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3684 if (child == mTitleBar) { 3685 // When drawing the title bar, move it horizontally to always show 3686 // at the top of the WebView. 3687 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3688 int newTop = Math.min(0, mScrollY); 3689 mTitleBar.setBottom(newTop + getTitleHeight()); 3690 mTitleBar.setTop(newTop); 3691 } 3692 return super.drawChild(canvas, child, drawingTime); 3693 } 3694 3695 private void drawContent(Canvas canvas) { 3696 // Update the buttons in the picture, so when we draw the picture 3697 // to the screen, they are in the correct state. 3698 // Tell the native side if user is a) touching the screen, 3699 // b) pressing the trackball down, or c) pressing the enter key 3700 // If the cursor is on a button, we need to draw it in the pressed 3701 // state. 3702 // If mNativeClass is 0, we should not reach here, so we do not 3703 // need to check it again. 3704 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3705 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3706 || mTrackballDown || mGotCenterDown, false); 3707 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3708 } 3709 3710 /** 3711 * Draw the background when beyond bounds 3712 * @param canvas Canvas to draw into 3713 */ 3714 private void drawOverScrollBackground(Canvas canvas) { 3715 if (mOverScrollBackground == null) { 3716 mOverScrollBackground = new Paint(); 3717 Bitmap bm = BitmapFactory.decodeResource( 3718 mContext.getResources(), 3719 com.android.internal.R.drawable.status_bar_background); 3720 mOverScrollBackground.setShader(new BitmapShader(bm, 3721 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3722 mOverScrollBorder = new Paint(); 3723 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3724 mOverScrollBorder.setStrokeWidth(0); 3725 mOverScrollBorder.setColor(0xffbbbbbb); 3726 } 3727 3728 int top = 0; 3729 int right = computeRealHorizontalScrollRange(); 3730 int bottom = top + computeRealVerticalScrollRange(); 3731 // first draw the background and anchor to the top of the view 3732 canvas.save(); 3733 canvas.translate(mScrollX, mScrollY); 3734 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3735 - mScrollY, Region.Op.DIFFERENCE); 3736 canvas.drawPaint(mOverScrollBackground); 3737 canvas.restore(); 3738 // then draw the border 3739 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3740 // next clip the region for the content 3741 canvas.clipRect(0, top, right, bottom); 3742 } 3743 3744 @Override 3745 protected void onDraw(Canvas canvas) { 3746 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3747 if (mNativeClass == 0) { 3748 return; 3749 } 3750 3751 // if both mContentWidth and mContentHeight are 0, it means there is no 3752 // valid Picture passed to WebView yet. This can happen when WebView 3753 // just starts. Draw the background and return. 3754 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3755 canvas.drawColor(mBackgroundColor); 3756 return; 3757 } 3758 3759 if (canvas.isHardwareAccelerated()) { 3760 mZoomManager.setHardwareAccelerated(); 3761 } 3762 3763 int saveCount = canvas.save(); 3764 if (mInOverScrollMode && !getSettings() 3765 .getUseWebViewBackgroundForOverscrollBackground()) { 3766 drawOverScrollBackground(canvas); 3767 } 3768 if (mTitleBar != null) { 3769 canvas.translate(0, (int) mTitleBar.getHeight()); 3770 } 3771 drawContent(canvas); 3772 canvas.restoreToCount(saveCount); 3773 3774 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3775 invalidate(); 3776 } 3777 if (inEditingMode()) { 3778 mWebTextView.onDrawSubstitute(); 3779 } 3780 mWebViewCore.signalRepaintDone(); 3781 3782 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3783 invalidate(); 3784 } 3785 3786 // paint the highlight in the end 3787 if (!mTouchHighlightRegion.isEmpty()) { 3788 if (mTouchHightlightPaint == null) { 3789 mTouchHightlightPaint = new Paint(); 3790 mTouchHightlightPaint.setColor(mHightlightColor); 3791 mTouchHightlightPaint.setAntiAlias(true); 3792 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3793 TOUCH_HIGHLIGHT_ARC)); 3794 } 3795 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3796 mTouchHightlightPaint); 3797 } 3798 if (DEBUG_TOUCH_HIGHLIGHT) { 3799 if (getSettings().getNavDump()) { 3800 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3801 if (mTouchCrossHairColor == null) { 3802 mTouchCrossHairColor = new Paint(); 3803 mTouchCrossHairColor.setColor(Color.RED); 3804 } 3805 canvas.drawLine(mTouchHighlightX - mNavSlop, 3806 mTouchHighlightY - mNavSlop, mTouchHighlightX 3807 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3808 + 1, mTouchCrossHairColor); 3809 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3810 mTouchHighlightY - mNavSlop, mTouchHighlightX 3811 - mNavSlop, 3812 mTouchHighlightY + mNavSlop + 1, 3813 mTouchCrossHairColor); 3814 } 3815 } 3816 } 3817 } 3818 3819 private void removeTouchHighlight(boolean removePendingMessage) { 3820 if (removePendingMessage) { 3821 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3822 } 3823 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3824 } 3825 3826 @Override 3827 public void setLayoutParams(ViewGroup.LayoutParams params) { 3828 if (params.height == LayoutParams.WRAP_CONTENT) { 3829 mWrapContent = true; 3830 } 3831 super.setLayoutParams(params); 3832 } 3833 3834 @Override 3835 public boolean performLongClick() { 3836 // performLongClick() is the result of a delayed message. If we switch 3837 // to windows overview, the WebView will be temporarily removed from the 3838 // view system. In that case, do nothing. 3839 if (getParent() == null) return false; 3840 3841 // A multi-finger gesture can look like a long press; make sure we don't take 3842 // long press actions if we're scaling. 3843 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3844 if (detector != null && detector.isInProgress()) { 3845 return false; 3846 } 3847 3848 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3849 // Send the click so that the textfield is in focus 3850 centerKeyPressOnTextField(); 3851 rebuildWebTextView(); 3852 } else { 3853 clearTextEntry(); 3854 } 3855 if (inEditingMode()) { 3856 // Since we just called rebuildWebTextView, the layout is not set 3857 // properly. Update it so it can correctly find the word to select. 3858 mWebTextView.ensureLayout(); 3859 // Provide a touch down event to WebTextView, which will allow it 3860 // to store the location to use in performLongClick. 3861 AbsoluteLayout.LayoutParams params 3862 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 3863 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 3864 mLastTouchTime, MotionEvent.ACTION_DOWN, 3865 mLastTouchX - params.x + mScrollX, 3866 mLastTouchY - params.y + mScrollY, 0); 3867 mWebTextView.dispatchTouchEvent(fake); 3868 return mWebTextView.performLongClick(); 3869 } 3870 if (mSelectingText) return false; // long click does nothing on selection 3871 /* if long click brings up a context menu, the super function 3872 * returns true and we're done. Otherwise, nothing happened when 3873 * the user clicked. */ 3874 if (super.performLongClick()) { 3875 return true; 3876 } 3877 /* In the case where the application hasn't already handled the long 3878 * click action, look for a word under the click. If one is found, 3879 * animate the text selection into view. 3880 * FIXME: no animation code yet */ 3881 return selectText(); 3882 } 3883 3884 /** 3885 * Select the word at the last click point. 3886 * 3887 * @hide pending API council approval 3888 */ 3889 public boolean selectText() { 3890 int x = viewToContentX(mLastTouchX + mScrollX); 3891 int y = viewToContentY(mLastTouchY + mScrollY); 3892 return selectText(x, y); 3893 } 3894 3895 /** 3896 * Select the word at the indicated content coordinates. 3897 */ 3898 boolean selectText(int x, int y) { 3899 if (!setUpSelect()) { 3900 return false; 3901 } 3902 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3903 nativeSetExtendSelection(); 3904 mDrawSelectionPointer = false; 3905 mSelectionStarted = true; 3906 mTouchMode = TOUCH_DRAG_MODE; 3907 return true; 3908 } 3909 selectionDone(); 3910 return false; 3911 } 3912 3913 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3914 3915 @Override 3916 protected void onConfigurationChanged(Configuration newConfig) { 3917 if (mSelectingText && mOrientation != newConfig.orientation) { 3918 selectionDone(); 3919 } 3920 mOrientation = newConfig.orientation; 3921 } 3922 3923 /** 3924 * Keep track of the Callback so we can end its ActionMode or remove its 3925 * titlebar. 3926 */ 3927 private SelectActionModeCallback mSelectCallback; 3928 3929 // These values are possible options for didUpdateWebTextViewDimensions. 3930 private static final int FULLY_ON_SCREEN = 0; 3931 private static final int INTERSECTS_SCREEN = 1; 3932 private static final int ANYWHERE = 2; 3933 3934 /** 3935 * Check to see if the focused textfield/textarea is still on screen. If it 3936 * is, update the the dimensions and location of WebTextView. Otherwise, 3937 * remove the WebTextView. Should be called when the zoom level changes. 3938 * @param intersection How to determine whether the textfield/textarea is 3939 * still on screen. 3940 * @return boolean True if the textfield/textarea is still on screen and the 3941 * dimensions/location of WebTextView have been updated. 3942 */ 3943 private boolean didUpdateWebTextViewDimensions(int intersection) { 3944 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3945 Rect vBox = contentToViewRect(contentBounds); 3946 Rect visibleRect = new Rect(); 3947 calcOurVisibleRect(visibleRect); 3948 // If the textfield is on screen, place the WebTextView in 3949 // its new place, accounting for our new scroll/zoom values, 3950 // and adjust its textsize. 3951 boolean onScreen; 3952 switch (intersection) { 3953 case FULLY_ON_SCREEN: 3954 onScreen = visibleRect.contains(vBox); 3955 break; 3956 case INTERSECTS_SCREEN: 3957 onScreen = Rect.intersects(visibleRect, vBox); 3958 break; 3959 case ANYWHERE: 3960 onScreen = true; 3961 break; 3962 default: 3963 throw new AssertionError( 3964 "invalid parameter passed to didUpdateWebTextViewDimensions"); 3965 } 3966 if (onScreen) { 3967 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3968 vBox.height()); 3969 mWebTextView.updateTextSize(); 3970 updateWebTextViewPadding(); 3971 return true; 3972 } else { 3973 // The textfield is now off screen. The user probably 3974 // was not zooming to see the textfield better. Remove 3975 // the WebTextView. If the user types a key, and the 3976 // textfield is still in focus, we will reconstruct 3977 // the WebTextView and scroll it back on screen. 3978 mWebTextView.remove(); 3979 return false; 3980 } 3981 } 3982 3983 void setBaseLayer(int layer, Rect invalRect) { 3984 if (mNativeClass == 0) 3985 return; 3986 if (invalRect == null) { 3987 Rect rect = new Rect(0, 0, mContentWidth, mContentHeight); 3988 nativeSetBaseLayer(layer, rect); 3989 } else { 3990 nativeSetBaseLayer(layer, invalRect); 3991 } 3992 } 3993 3994 private void onZoomAnimationStart() { 3995 // If it is in password mode, turn it off so it does not draw misplaced. 3996 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3997 mWebTextView.setInPassword(false); 3998 } 3999 } 4000 4001 private void onZoomAnimationEnd() { 4002 // adjust the edit text view if needed 4003 if (inEditingMode() && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN) 4004 && nativeFocusCandidateIsPassword()) { 4005 // If it is a password field, start drawing the WebTextView once 4006 // again. 4007 mWebTextView.setInPassword(true); 4008 } 4009 } 4010 4011 void onFixedLengthZoomAnimationStart() { 4012 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4013 onZoomAnimationStart(); 4014 } 4015 4016 void onFixedLengthZoomAnimationEnd() { 4017 if (!mSelectingText) { 4018 WebViewCore.resumeUpdatePicture(mWebViewCore); 4019 } 4020 onZoomAnimationEnd(); 4021 } 4022 4023 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4024 Paint.DITHER_FLAG | 4025 Paint.SUBPIXEL_TEXT_FLAG; 4026 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4027 Paint.DITHER_FLAG; 4028 4029 private final DrawFilter mZoomFilter = 4030 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4031 // If we need to trade better quality for speed, set mScrollFilter to null 4032 private final DrawFilter mScrollFilter = 4033 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4034 4035 private void drawCoreAndCursorRing(Canvas canvas, int color, 4036 boolean drawCursorRing) { 4037 if (mDrawHistory) { 4038 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4039 canvas.drawPicture(mHistoryPicture); 4040 return; 4041 } 4042 if (mNativeClass == 0) return; 4043 4044 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4045 boolean animateScroll = ((!mScroller.isFinished() 4046 || mVelocityTracker != null) 4047 && (mTouchMode != TOUCH_DRAG_MODE || 4048 mHeldMotionless != MOTIONLESS_TRUE)) 4049 || mDeferTouchMode == TOUCH_DRAG_MODE; 4050 if (mTouchMode == TOUCH_DRAG_MODE) { 4051 if (mHeldMotionless == MOTIONLESS_PENDING) { 4052 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4053 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4054 mHeldMotionless = MOTIONLESS_FALSE; 4055 } 4056 if (mHeldMotionless == MOTIONLESS_FALSE) { 4057 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4058 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4059 mHeldMotionless = MOTIONLESS_PENDING; 4060 } 4061 } 4062 if (animateZoom) { 4063 mZoomManager.animateZoom(canvas); 4064 } else { 4065 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4066 } 4067 4068 boolean UIAnimationsRunning = false; 4069 // Currently for each draw we compute the animation values; 4070 // We may in the future decide to do that independently. 4071 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4072 UIAnimationsRunning = true; 4073 // If we have unfinished (or unstarted) animations, 4074 // we ask for a repaint. 4075 invalidate(); 4076 } 4077 4078 // decide which adornments to draw 4079 int extras = DRAW_EXTRAS_NONE; 4080 if (mFindIsUp) { 4081 extras = DRAW_EXTRAS_FIND; 4082 } else if (mSelectingText) { 4083 extras = DRAW_EXTRAS_SELECTION; 4084 nativeSetSelectionPointer(mDrawSelectionPointer, 4085 mZoomManager.getInvScale(), 4086 mSelectX, mSelectY - getTitleHeight()); 4087 } else if (drawCursorRing) { 4088 extras = DRAW_EXTRAS_CURSOR_RING; 4089 } 4090 if (DebugFlags.WEB_VIEW) { 4091 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4092 + " mSelectingText=" + mSelectingText 4093 + " nativePageShouldHandleShiftAndArrows()=" 4094 + nativePageShouldHandleShiftAndArrows() 4095 + " animateZoom=" + animateZoom 4096 + " extras=" + extras); 4097 } 4098 4099 if (canvas.isHardwareAccelerated()) { 4100 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4101 getScale(), extras); 4102 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4103 } else { 4104 DrawFilter df = null; 4105 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4106 df = mZoomFilter; 4107 } else if (animateScroll) { 4108 df = mScrollFilter; 4109 } 4110 canvas.setDrawFilter(df); 4111 // XXX: Revisit splitting content. Right now it causes a 4112 // synchronization problem with layers. 4113 int content = nativeDraw(canvas, color, extras, false); 4114 canvas.setDrawFilter(null); 4115 if (content != 0) { 4116 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4117 } 4118 } 4119 4120 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4121 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4122 mTouchMode = TOUCH_SHORTPRESS_MODE; 4123 } 4124 } 4125 if (mFocusSizeChanged) { 4126 mFocusSizeChanged = false; 4127 // If we are zooming, this will get handled above, when the zoom 4128 // finishes. We also do not need to do this unless the WebTextView 4129 // is showing. 4130 if (!animateZoom && inEditingMode()) { 4131 didUpdateWebTextViewDimensions(ANYWHERE); 4132 } 4133 } 4134 } 4135 4136 // draw history 4137 private boolean mDrawHistory = false; 4138 private Picture mHistoryPicture = null; 4139 private int mHistoryWidth = 0; 4140 private int mHistoryHeight = 0; 4141 4142 // Only check the flag, can be called from WebCore thread 4143 boolean drawHistory() { 4144 return mDrawHistory; 4145 } 4146 4147 int getHistoryPictureWidth() { 4148 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4149 } 4150 4151 // Should only be called in UI thread 4152 void switchOutDrawHistory() { 4153 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4154 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4155 mDrawHistory = false; 4156 mHistoryPicture = null; 4157 invalidate(); 4158 int oldScrollX = mScrollX; 4159 int oldScrollY = mScrollY; 4160 mScrollX = pinLocX(mScrollX); 4161 mScrollY = pinLocY(mScrollY); 4162 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4163 mUserScroll = false; 4164 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 4165 oldScrollY); 4166 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4167 } else { 4168 sendOurVisibleRect(); 4169 } 4170 } 4171 } 4172 4173 WebViewCore.CursorData cursorData() { 4174 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4175 result.mMoveGeneration = nativeMoveGeneration(); 4176 result.mFrame = nativeCursorFramePointer(); 4177 Point position = nativeCursorPosition(); 4178 result.mX = position.x; 4179 result.mY = position.y; 4180 return result; 4181 } 4182 4183 /** 4184 * Delete text from start to end in the focused textfield. If there is no 4185 * focus, or if start == end, silently fail. If start and end are out of 4186 * order, swap them. 4187 * @param start Beginning of selection to delete. 4188 * @param end End of selection to delete. 4189 */ 4190 /* package */ void deleteSelection(int start, int end) { 4191 mTextGeneration++; 4192 WebViewCore.TextSelectionData data 4193 = new WebViewCore.TextSelectionData(start, end); 4194 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4195 data); 4196 } 4197 4198 /** 4199 * Set the selection to (start, end) in the focused textfield. If start and 4200 * end are out of order, swap them. 4201 * @param start Beginning of selection. 4202 * @param end End of selection. 4203 */ 4204 /* package */ void setSelection(int start, int end) { 4205 if (mWebViewCore != null) { 4206 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4207 } 4208 } 4209 4210 @Override 4211 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4212 InputConnection connection = super.onCreateInputConnection(outAttrs); 4213 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4214 return connection; 4215 } 4216 4217 /** 4218 * Called in response to a message from webkit telling us that the soft 4219 * keyboard should be launched. 4220 */ 4221 private void displaySoftKeyboard(boolean isTextView) { 4222 InputMethodManager imm = (InputMethodManager) 4223 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4224 4225 // bring it back to the default level scale so that user can enter text 4226 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4227 if (zoom) { 4228 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4229 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4230 } 4231 if (isTextView) { 4232 rebuildWebTextView(); 4233 if (inEditingMode()) { 4234 imm.showSoftInput(mWebTextView, 0); 4235 if (zoom) { 4236 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4237 } 4238 return; 4239 } 4240 } 4241 // Used by plugins and contentEditable. 4242 // Also used if the navigation cache is out of date, and 4243 // does not recognize that a textfield is in focus. In that 4244 // case, use WebView as the targeted view. 4245 // see http://b/issue?id=2457459 4246 imm.showSoftInput(this, 0); 4247 } 4248 4249 // Called by WebKit to instruct the UI to hide the keyboard 4250 private void hideSoftKeyboard() { 4251 InputMethodManager imm = InputMethodManager.peekInstance(); 4252 if (imm != null && (imm.isActive(this) 4253 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4254 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4255 } 4256 } 4257 4258 /* 4259 * This method checks the current focus and cursor and potentially rebuilds 4260 * mWebTextView to have the appropriate properties, such as password, 4261 * multiline, and what text it contains. It also removes it if necessary. 4262 */ 4263 /* package */ void rebuildWebTextView() { 4264 // If the WebView does not have focus, do nothing until it gains focus. 4265 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4266 return; 4267 } 4268 boolean alreadyThere = inEditingMode(); 4269 // inEditingMode can only return true if mWebTextView is non-null, 4270 // so we can safely call remove() if (alreadyThere) 4271 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4272 if (alreadyThere) { 4273 mWebTextView.remove(); 4274 } 4275 return; 4276 } 4277 // At this point, we know we have found an input field, so go ahead 4278 // and create the WebTextView if necessary. 4279 if (mWebTextView == null) { 4280 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4281 // Initialize our generation number. 4282 mTextGeneration = 0; 4283 } 4284 mWebTextView.updateTextSize(); 4285 Rect visibleRect = new Rect(); 4286 calcOurContentVisibleRect(visibleRect); 4287 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4288 // should be in content coordinates. 4289 Rect bounds = nativeFocusCandidateNodeBounds(); 4290 Rect vBox = contentToViewRect(bounds); 4291 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4292 if (!Rect.intersects(bounds, visibleRect)) { 4293 revealSelection(); 4294 } 4295 String text = nativeFocusCandidateText(); 4296 int nodePointer = nativeFocusCandidatePointer(); 4297 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4298 // It is possible that we have the same textfield, but it has moved, 4299 // i.e. In the case of opening/closing the screen. 4300 // In that case, we need to set the dimensions, but not the other 4301 // aspects. 4302 // If the text has been changed by webkit, update it. However, if 4303 // there has been more UI text input, ignore it. We will receive 4304 // another update when that text is recognized. 4305 if (text != null && !text.equals(mWebTextView.getText().toString()) 4306 && nativeTextGeneration() == mTextGeneration) { 4307 mWebTextView.setTextAndKeepSelection(text); 4308 } 4309 } else { 4310 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4311 Gravity.RIGHT : Gravity.NO_GRAVITY); 4312 // This needs to be called before setType, which may call 4313 // requestFormData, and it needs to have the correct nodePointer. 4314 mWebTextView.setNodePointer(nodePointer); 4315 mWebTextView.setType(nativeFocusCandidateType()); 4316 updateWebTextViewPadding(); 4317 if (null == text) { 4318 if (DebugFlags.WEB_VIEW) { 4319 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4320 } 4321 text = ""; 4322 } 4323 mWebTextView.setTextAndKeepSelection(text); 4324 InputMethodManager imm = InputMethodManager.peekInstance(); 4325 if (imm != null && imm.isActive(mWebTextView)) { 4326 imm.restartInput(mWebTextView); 4327 } 4328 } 4329 if (isFocused()) { 4330 mWebTextView.requestFocus(); 4331 } 4332 } 4333 4334 /** 4335 * Update the padding of mWebTextView based on the native textfield/textarea 4336 */ 4337 void updateWebTextViewPadding() { 4338 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4339 if (paddingRect != null) { 4340 // Use contentToViewDimension since these are the dimensions of 4341 // the padding. 4342 mWebTextView.setPadding( 4343 contentToViewDimension(paddingRect.left), 4344 contentToViewDimension(paddingRect.top), 4345 contentToViewDimension(paddingRect.right), 4346 contentToViewDimension(paddingRect.bottom)); 4347 } 4348 } 4349 4350 /** 4351 * Tell webkit to put the cursor on screen. 4352 */ 4353 /* package */ void revealSelection() { 4354 if (mWebViewCore != null) { 4355 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4356 } 4357 } 4358 4359 /** 4360 * Called by WebTextView to find saved form data associated with the 4361 * textfield 4362 * @param name Name of the textfield. 4363 * @param nodePointer Pointer to the node of the textfield, so it can be 4364 * compared to the currently focused textfield when the data is 4365 * retrieved. 4366 * @param autoFillable true if WebKit has determined this field is part of 4367 * a form that can be auto filled. 4368 * @param autoComplete true if the attribute "autocomplete" is set to true 4369 * on the textfield. 4370 */ 4371 /* package */ void requestFormData(String name, int nodePointer, 4372 boolean autoFillable, boolean autoComplete) { 4373 if (mWebViewCore.getSettings().getSaveFormData()) { 4374 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4375 update.arg1 = nodePointer; 4376 RequestFormData updater = new RequestFormData(name, getUrl(), 4377 update, autoFillable, autoComplete); 4378 Thread t = new Thread(updater); 4379 t.start(); 4380 } 4381 } 4382 4383 /** 4384 * Pass a message to find out the <label> associated with the <input> 4385 * identified by nodePointer 4386 * @param framePointer Pointer to the frame containing the <input> node 4387 * @param nodePointer Pointer to the node for which a <label> is desired. 4388 */ 4389 /* package */ void requestLabel(int framePointer, int nodePointer) { 4390 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4391 nodePointer); 4392 } 4393 4394 /* 4395 * This class requests an Adapter for the WebTextView which shows past 4396 * entries stored in the database. It is a Runnable so that it can be done 4397 * in its own thread, without slowing down the UI. 4398 */ 4399 private class RequestFormData implements Runnable { 4400 private String mName; 4401 private String mUrl; 4402 private Message mUpdateMessage; 4403 private boolean mAutoFillable; 4404 private boolean mAutoComplete; 4405 4406 public RequestFormData(String name, String url, Message msg, 4407 boolean autoFillable, boolean autoComplete) { 4408 mName = name; 4409 mUrl = url; 4410 mUpdateMessage = msg; 4411 mAutoFillable = autoFillable; 4412 mAutoComplete = autoComplete; 4413 } 4414 4415 public void run() { 4416 ArrayList<String> pastEntries = new ArrayList<String>(); 4417 4418 if (mAutoFillable) { 4419 // Note that code inside the adapter click handler in WebTextView depends 4420 // on the AutoFill item being at the top of the drop down list. If you change 4421 // the order, make sure to do it there too! 4422 WebSettings settings = getSettings(); 4423 if (settings != null && settings.getAutoFillProfile() != null) { 4424 pastEntries.add(getResources().getText( 4425 com.android.internal.R.string.autofill_this_form).toString() + 4426 " " + 4427 mAutoFillData.getPreviewString()); 4428 mWebTextView.setAutoFillProfileIsSet(true); 4429 } else { 4430 // There is no autofill profile set up yet, so add an option that 4431 // will invite the user to set their profile up. 4432 pastEntries.add(getResources().getText( 4433 com.android.internal.R.string.setup_autofill).toString()); 4434 mWebTextView.setAutoFillProfileIsSet(false); 4435 } 4436 } 4437 4438 if (mAutoComplete) { 4439 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4440 } 4441 4442 if (pastEntries.size() > 0) { 4443 AutoCompleteAdapter adapter = new 4444 AutoCompleteAdapter(mContext, pastEntries); 4445 mUpdateMessage.obj = adapter; 4446 mUpdateMessage.sendToTarget(); 4447 } 4448 } 4449 } 4450 4451 /** 4452 * Dump the display tree to "/sdcard/displayTree.txt" 4453 * 4454 * @hide debug only 4455 */ 4456 public void dumpDisplayTree() { 4457 nativeDumpDisplayTree(getUrl()); 4458 } 4459 4460 /** 4461 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4462 * "/sdcard/domTree.txt" 4463 * 4464 * @hide debug only 4465 */ 4466 public void dumpDomTree(boolean toFile) { 4467 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4468 } 4469 4470 /** 4471 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4472 * to "/sdcard/renderTree.txt" 4473 * 4474 * @hide debug only 4475 */ 4476 public void dumpRenderTree(boolean toFile) { 4477 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4478 } 4479 4480 /** 4481 * Called by DRT on UI thread, need to proxy to WebCore thread. 4482 * 4483 * @hide debug only 4484 */ 4485 public void useMockDeviceOrientation() { 4486 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4487 } 4488 4489 /** 4490 * Called by DRT on WebCore thread. 4491 * 4492 * @hide debug only 4493 */ 4494 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4495 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4496 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4497 canProvideGamma, gamma); 4498 } 4499 4500 /** 4501 * Dump the V8 counters to standard output. 4502 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4503 * true. Otherwise, this will do nothing. 4504 * 4505 * @hide debug only 4506 */ 4507 public void dumpV8Counters() { 4508 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4509 } 4510 4511 // This is used to determine long press with the center key. Does not 4512 // affect long press with the trackball/touch. 4513 private boolean mGotCenterDown = false; 4514 4515 @Override 4516 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4517 // send complex characters to webkit for use by JS and plugins 4518 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4519 // pass the key to DOM 4520 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4521 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4522 // return true as DOM handles the key 4523 return true; 4524 } 4525 return false; 4526 } 4527 4528 private boolean isEnterActionKey(int keyCode) { 4529 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4530 || keyCode == KeyEvent.KEYCODE_ENTER 4531 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4532 } 4533 4534 @Override 4535 public boolean onKeyDown(int keyCode, KeyEvent event) { 4536 if (DebugFlags.WEB_VIEW) { 4537 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4538 + "keyCode=" + keyCode 4539 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4540 } 4541 4542 // don't implement accelerator keys here; defer to host application 4543 if (event.isCtrlPressed()) { 4544 return false; 4545 } 4546 4547 if (mNativeClass == 0) { 4548 return false; 4549 } 4550 4551 // do this hack up front, so it always works, regardless of touch-mode 4552 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4553 mAutoRedraw = !mAutoRedraw; 4554 if (mAutoRedraw) { 4555 invalidate(); 4556 } 4557 return true; 4558 } 4559 4560 // Bubble up the key event if 4561 // 1. it is a system key; or 4562 // 2. the host application wants to handle it; 4563 if (event.isSystem() 4564 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4565 return false; 4566 } 4567 4568 // accessibility support 4569 if (accessibilityScriptInjected()) { 4570 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4571 // if an accessibility script is injected we delegate to it the key handling. 4572 // this script is a screen reader which is a fully fledged solution for blind 4573 // users to navigate in and interact with web pages. 4574 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4575 return true; 4576 } else { 4577 // Clean up if accessibility was disabled after loading the current URL. 4578 mAccessibilityScriptInjected = false; 4579 } 4580 } else if (mAccessibilityInjector != null) { 4581 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4582 if (mAccessibilityInjector.onKeyEvent(event)) { 4583 // if an accessibility injector is present (no JavaScript enabled or the site 4584 // opts out injecting our JavaScript screen reader) we let it decide whether 4585 // to act on and consume the event. 4586 return true; 4587 } 4588 } else { 4589 // Clean up if accessibility was disabled after loading the current URL. 4590 mAccessibilityInjector = null; 4591 } 4592 } 4593 4594 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4595 if (event.hasNoModifiers()) { 4596 pageUp(false); 4597 return true; 4598 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4599 pageUp(true); 4600 return true; 4601 } 4602 } 4603 4604 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4605 if (event.hasNoModifiers()) { 4606 pageDown(false); 4607 return true; 4608 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4609 pageDown(true); 4610 return true; 4611 } 4612 } 4613 4614 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4615 pageUp(true); 4616 return true; 4617 } 4618 4619 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4620 pageDown(true); 4621 return true; 4622 } 4623 4624 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4625 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4626 switchOutDrawHistory(); 4627 if (nativePageShouldHandleShiftAndArrows()) { 4628 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4629 return true; 4630 } 4631 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4632 switch (keyCode) { 4633 case KeyEvent.KEYCODE_DPAD_UP: 4634 pageUp(true); 4635 return true; 4636 case KeyEvent.KEYCODE_DPAD_DOWN: 4637 pageDown(true); 4638 return true; 4639 case KeyEvent.KEYCODE_DPAD_LEFT: 4640 nativeClearCursor(); // start next trackball movement from page edge 4641 return pinScrollTo(0, mScrollY, true, 0); 4642 case KeyEvent.KEYCODE_DPAD_RIGHT: 4643 nativeClearCursor(); // start next trackball movement from page edge 4644 return pinScrollTo(mContentWidth, mScrollY, true, 0); 4645 } 4646 } 4647 if (mSelectingText) { 4648 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4649 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4650 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4651 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4652 int multiplier = event.getRepeatCount() + 1; 4653 moveSelection(xRate * multiplier, yRate * multiplier); 4654 return true; 4655 } 4656 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4657 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4658 return true; 4659 } 4660 // Bubble up the key event as WebView doesn't handle it 4661 return false; 4662 } 4663 4664 if (isEnterActionKey(keyCode)) { 4665 switchOutDrawHistory(); 4666 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 4667 || nativeCursorWantsKeyEvents(); 4668 if (event.getRepeatCount() == 0) { 4669 if (mSelectingText) { 4670 return true; // discard press if copy in progress 4671 } 4672 mGotCenterDown = true; 4673 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4674 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4675 // Already checked mNativeClass, so we do not need to check it 4676 // again. 4677 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4678 if (!wantsKeyEvents) return true; 4679 } 4680 // Bubble up the key event as WebView doesn't handle it 4681 if (!wantsKeyEvents) return false; 4682 } 4683 4684 if (getSettings().getNavDump()) { 4685 switch (keyCode) { 4686 case KeyEvent.KEYCODE_4: 4687 dumpDisplayTree(); 4688 break; 4689 case KeyEvent.KEYCODE_5: 4690 case KeyEvent.KEYCODE_6: 4691 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4692 break; 4693 case KeyEvent.KEYCODE_7: 4694 case KeyEvent.KEYCODE_8: 4695 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4696 break; 4697 case KeyEvent.KEYCODE_9: 4698 nativeInstrumentReport(); 4699 return true; 4700 } 4701 } 4702 4703 if (nativeCursorIsTextInput()) { 4704 // This message will put the node in focus, for the DOM's notion 4705 // of focus. 4706 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 4707 nativeCursorNodePointer()); 4708 // This will bring up the WebTextView and put it in focus, for 4709 // our view system's notion of focus 4710 rebuildWebTextView(); 4711 // Now we need to pass the event to it 4712 if (inEditingMode()) { 4713 mWebTextView.setDefaultSelection(); 4714 return mWebTextView.dispatchKeyEvent(event); 4715 } 4716 } else if (nativeHasFocusNode()) { 4717 // In this case, the cursor is not on a text input, but the focus 4718 // might be. Check it, and if so, hand over to the WebTextView. 4719 rebuildWebTextView(); 4720 if (inEditingMode()) { 4721 mWebTextView.setDefaultSelection(); 4722 return mWebTextView.dispatchKeyEvent(event); 4723 } 4724 } 4725 4726 // TODO: should we pass all the keys to DOM or check the meta tag 4727 if (nativeCursorWantsKeyEvents() || true) { 4728 // pass the key to DOM 4729 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4730 // return true as DOM handles the key 4731 return true; 4732 } 4733 4734 // Bubble up the key event as WebView doesn't handle it 4735 return false; 4736 } 4737 4738 @Override 4739 public boolean onKeyUp(int keyCode, KeyEvent event) { 4740 if (DebugFlags.WEB_VIEW) { 4741 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4742 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4743 } 4744 4745 if (mNativeClass == 0) { 4746 return false; 4747 } 4748 4749 // special CALL handling when cursor node's href is "tel:XXX" 4750 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4751 String text = nativeCursorText(); 4752 if (!nativeCursorIsTextInput() && text != null 4753 && text.startsWith(SCHEME_TEL)) { 4754 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4755 getContext().startActivity(intent); 4756 return true; 4757 } 4758 } 4759 4760 // Bubble up the key event if 4761 // 1. it is a system key; or 4762 // 2. the host application wants to handle it; 4763 if (event.isSystem() 4764 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4765 return false; 4766 } 4767 4768 // accessibility support 4769 if (accessibilityScriptInjected()) { 4770 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4771 // if an accessibility script is injected we delegate to it the key handling. 4772 // this script is a screen reader which is a fully fledged solution for blind 4773 // users to navigate in and interact with web pages. 4774 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4775 return true; 4776 } else { 4777 // Clean up if accessibility was disabled after loading the current URL. 4778 mAccessibilityScriptInjected = false; 4779 } 4780 } else if (mAccessibilityInjector != null) { 4781 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4782 if (mAccessibilityInjector.onKeyEvent(event)) { 4783 // if an accessibility injector is present (no JavaScript enabled or the site 4784 // opts out injecting our JavaScript screen reader) we let it decide whether to 4785 // act on and consume the event. 4786 return true; 4787 } 4788 } else { 4789 // Clean up if accessibility was disabled after loading the current URL. 4790 mAccessibilityInjector = null; 4791 } 4792 } 4793 4794 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4795 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4796 if (nativePageShouldHandleShiftAndArrows()) { 4797 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4798 return true; 4799 } 4800 // always handle the navigation keys in the UI thread 4801 // Bubble up the key event as WebView doesn't handle it 4802 return false; 4803 } 4804 4805 if (isEnterActionKey(keyCode)) { 4806 // remove the long press message first 4807 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4808 mGotCenterDown = false; 4809 4810 if (mSelectingText) { 4811 if (mExtendSelection) { 4812 copySelection(); 4813 selectionDone(); 4814 } else { 4815 mExtendSelection = true; 4816 nativeSetExtendSelection(); 4817 invalidate(); // draw the i-beam instead of the arrow 4818 } 4819 return true; // discard press if copy in progress 4820 } 4821 4822 // perform the single click 4823 Rect visibleRect = sendOurVisibleRect(); 4824 // Note that sendOurVisibleRect calls viewToContent, so the 4825 // coordinates should be in content coordinates. 4826 if (!nativeCursorIntersects(visibleRect)) { 4827 return false; 4828 } 4829 WebViewCore.CursorData data = cursorData(); 4830 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4831 playSoundEffect(SoundEffectConstants.CLICK); 4832 if (nativeCursorIsTextInput()) { 4833 rebuildWebTextView(); 4834 centerKeyPressOnTextField(); 4835 if (inEditingMode()) { 4836 mWebTextView.setDefaultSelection(); 4837 } 4838 return true; 4839 } 4840 clearTextEntry(); 4841 nativeShowCursorTimed(); 4842 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4843 return true; 4844 } 4845 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 4846 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4847 nativeCursorNodePointer()); 4848 return true; 4849 } 4850 } 4851 4852 // TODO: should we pass all the keys to DOM or check the meta tag 4853 if (nativeCursorWantsKeyEvents() || true) { 4854 // pass the key to DOM 4855 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4856 // return true as DOM handles the key 4857 return true; 4858 } 4859 4860 // Bubble up the key event as WebView doesn't handle it 4861 return false; 4862 } 4863 4864 /* 4865 * Enter selecting text mode. Returns true if the WebView is now in 4866 * selecting text mode (including if it was already in that mode, and this 4867 * method did nothing). 4868 */ 4869 private boolean setUpSelect() { 4870 if (0 == mNativeClass) return false; // client isn't initialized 4871 if (inFullScreenMode()) return false; 4872 if (mSelectingText) return true; 4873 mExtendSelection = false; 4874 mSelectingText = mDrawSelectionPointer = true; 4875 // don't let the picture change during text selection 4876 WebViewCore.pauseUpdatePicture(mWebViewCore); 4877 nativeResetSelection(); 4878 if (nativeHasCursorNode()) { 4879 Rect rect = nativeCursorNodeBounds(); 4880 mSelectX = contentToViewX(rect.left); 4881 mSelectY = contentToViewY(rect.top); 4882 } else if (mLastTouchY > getVisibleTitleHeight()) { 4883 mSelectX = mScrollX + mLastTouchX; 4884 mSelectY = mScrollY + mLastTouchY; 4885 } else { 4886 mSelectX = mScrollX + getViewWidth() / 2; 4887 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4888 } 4889 nativeHideCursor(); 4890 mSelectCallback = new SelectActionModeCallback(); 4891 mSelectCallback.setWebView(this); 4892 if (startActionMode(mSelectCallback) == null) { 4893 // There is no ActionMode, so do not allow the user to modify a 4894 // selection. 4895 selectionDone(); 4896 return false; 4897 } 4898 mMinAutoScrollX = 0; 4899 mMaxAutoScrollX = getViewWidth(); 4900 mMinAutoScrollY = 0; 4901 mMaxAutoScrollY = getViewHeightWithTitle(); 4902 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 4903 viewToContentY(mSelectY), mScrollingLayerRect, 4904 mScrollingLayerBounds); 4905 if (mScrollingLayer != 0) { 4906 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 4907 mMinAutoScrollX = Math.max(mMinAutoScrollX, 4908 contentToViewX(mScrollingLayerBounds.left)); 4909 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 4910 contentToViewX(mScrollingLayerBounds.right)); 4911 } 4912 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 4913 mMinAutoScrollY = Math.max(mMinAutoScrollY, 4914 contentToViewY(mScrollingLayerBounds.top)); 4915 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 4916 contentToViewY(mScrollingLayerBounds.bottom)); 4917 } 4918 } 4919 mMinAutoScrollX += SELECT_SCROLL; 4920 mMaxAutoScrollX -= SELECT_SCROLL; 4921 mMinAutoScrollY += SELECT_SCROLL; 4922 mMaxAutoScrollY -= SELECT_SCROLL; 4923 return true; 4924 } 4925 4926 /** 4927 * Use this method to put the WebView into text selection mode. 4928 * Do not rely on this functionality; it will be deprecated in the future. 4929 */ 4930 public void emulateShiftHeld() { 4931 setUpSelect(); 4932 } 4933 4934 /** 4935 * Select all of the text in this WebView. 4936 * 4937 * @hide pending API council approval. 4938 */ 4939 public void selectAll() { 4940 if (0 == mNativeClass) return; // client isn't initialized 4941 if (inFullScreenMode()) return; 4942 if (!mSelectingText) { 4943 // retrieve a point somewhere within the text 4944 Point select = nativeSelectableText(); 4945 if (!selectText(select.x, select.y)) return; 4946 } 4947 nativeSelectAll(); 4948 mDrawSelectionPointer = false; 4949 mExtendSelection = true; 4950 invalidate(); 4951 } 4952 4953 /** 4954 * Called when the selection has been removed. 4955 */ 4956 void selectionDone() { 4957 if (mSelectingText) { 4958 mSelectingText = false; 4959 // finish is idempotent, so this is fine even if selectionDone was 4960 // called by mSelectCallback.onDestroyActionMode 4961 mSelectCallback.finish(); 4962 mSelectCallback = null; 4963 WebViewCore.resumePriority(); 4964 WebViewCore.resumeUpdatePicture(mWebViewCore); 4965 invalidate(); // redraw without selection 4966 mAutoScrollX = 0; 4967 mAutoScrollY = 0; 4968 mSentAutoScrollMessage = false; 4969 } 4970 } 4971 4972 /** 4973 * Copy the selection to the clipboard 4974 * 4975 * @hide pending API council approval. 4976 */ 4977 public boolean copySelection() { 4978 boolean copiedSomething = false; 4979 String selection = getSelection(); 4980 if (selection != null && selection != "") { 4981 if (DebugFlags.WEB_VIEW) { 4982 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4983 } 4984 Toast.makeText(mContext 4985 , com.android.internal.R.string.text_copied 4986 , Toast.LENGTH_SHORT).show(); 4987 copiedSomething = true; 4988 ClipboardManager cm = (ClipboardManager)getContext() 4989 .getSystemService(Context.CLIPBOARD_SERVICE); 4990 cm.setText(selection); 4991 } 4992 invalidate(); // remove selection region and pointer 4993 return copiedSomething; 4994 } 4995 4996 /** 4997 * Returns the currently highlighted text as a string. 4998 */ 4999 String getSelection() { 5000 if (mNativeClass == 0) return ""; 5001 return nativeGetSelection(); 5002 } 5003 5004 @Override 5005 protected void onAttachedToWindow() { 5006 super.onAttachedToWindow(); 5007 if (hasWindowFocus()) setActive(true); 5008 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5009 if (treeObserver != null) { 5010 if (mGlobalLayoutListener == null) { 5011 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5012 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5013 } 5014 if (mScrollChangedListener == null) { 5015 mScrollChangedListener = new InnerScrollChangedListener(); 5016 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5017 } 5018 } 5019 5020 addAccessibilityApisToJavaScript(); 5021 } 5022 5023 @Override 5024 protected void onDetachedFromWindow() { 5025 clearHelpers(); 5026 mZoomManager.dismissZoomPicker(); 5027 if (hasWindowFocus()) setActive(false); 5028 5029 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5030 if (treeObserver != null) { 5031 if (mGlobalLayoutListener != null) { 5032 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5033 mGlobalLayoutListener = null; 5034 } 5035 if (mScrollChangedListener != null) { 5036 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5037 mScrollChangedListener = null; 5038 } 5039 } 5040 5041 removeAccessibilityApisFromJavaScript(); 5042 5043 super.onDetachedFromWindow(); 5044 } 5045 5046 @Override 5047 protected void onVisibilityChanged(View changedView, int visibility) { 5048 super.onVisibilityChanged(changedView, visibility); 5049 // The zoomManager may be null if the webview is created from XML that 5050 // specifies the view's visibility param as not visible (see http://b/2794841) 5051 if (visibility != View.VISIBLE && mZoomManager != null) { 5052 mZoomManager.dismissZoomPicker(); 5053 } 5054 } 5055 5056 /** 5057 * @deprecated WebView no longer needs to implement 5058 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5059 */ 5060 @Deprecated 5061 public void onChildViewAdded(View parent, View child) {} 5062 5063 /** 5064 * @deprecated WebView no longer needs to implement 5065 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5066 */ 5067 @Deprecated 5068 public void onChildViewRemoved(View p, View child) {} 5069 5070 /** 5071 * @deprecated WebView should not have implemented 5072 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 5073 * does nothing now. 5074 */ 5075 @Deprecated 5076 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5077 } 5078 5079 void setActive(boolean active) { 5080 if (active) { 5081 if (hasFocus()) { 5082 // If our window regained focus, and we have focus, then begin 5083 // drawing the cursor ring 5084 mDrawCursorRing = true; 5085 setFocusControllerActive(true); 5086 if (mNativeClass != 0) { 5087 nativeRecordButtons(true, false, true); 5088 } 5089 } else { 5090 if (!inEditingMode()) { 5091 // If our window gained focus, but we do not have it, do not 5092 // draw the cursor ring. 5093 mDrawCursorRing = false; 5094 setFocusControllerActive(false); 5095 } 5096 // We do not call nativeRecordButtons here because we assume 5097 // that when we lost focus, or window focus, it got called with 5098 // false for the first parameter 5099 } 5100 } else { 5101 if (!mZoomManager.isZoomPickerVisible()) { 5102 /* 5103 * The external zoom controls come in their own window, so our 5104 * window loses focus. Our policy is to not draw the cursor ring 5105 * if our window is not focused, but this is an exception since 5106 * the user can still navigate the web page with the zoom 5107 * controls showing. 5108 */ 5109 mDrawCursorRing = false; 5110 } 5111 mGotKeyDown = false; 5112 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5113 mTouchMode = TOUCH_DONE_MODE; 5114 if (mNativeClass != 0) { 5115 nativeRecordButtons(false, false, true); 5116 } 5117 setFocusControllerActive(false); 5118 } 5119 invalidate(); 5120 } 5121 5122 // To avoid drawing the cursor ring, and remove the TextView when our window 5123 // loses focus. 5124 @Override 5125 public void onWindowFocusChanged(boolean hasWindowFocus) { 5126 setActive(hasWindowFocus); 5127 if (hasWindowFocus) { 5128 JWebCoreJavaBridge.setActiveWebView(this); 5129 } else { 5130 JWebCoreJavaBridge.removeActiveWebView(this); 5131 } 5132 super.onWindowFocusChanged(hasWindowFocus); 5133 } 5134 5135 /* 5136 * Pass a message to WebCore Thread, telling the WebCore::Page's 5137 * FocusController to be "inactive" so that it will 5138 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5139 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5140 */ 5141 /* package */ void setFocusControllerActive(boolean active) { 5142 if (mWebViewCore == null) return; 5143 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5144 // Need to send this message after the document regains focus. 5145 if (active && mListBoxMessage != null) { 5146 mWebViewCore.sendMessage(mListBoxMessage); 5147 mListBoxMessage = null; 5148 } 5149 } 5150 5151 @Override 5152 protected void onFocusChanged(boolean focused, int direction, 5153 Rect previouslyFocusedRect) { 5154 if (DebugFlags.WEB_VIEW) { 5155 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5156 } 5157 if (focused) { 5158 // When we regain focus, if we have window focus, resume drawing 5159 // the cursor ring 5160 if (hasWindowFocus()) { 5161 mDrawCursorRing = true; 5162 if (mNativeClass != 0) { 5163 nativeRecordButtons(true, false, true); 5164 } 5165 setFocusControllerActive(true); 5166 //} else { 5167 // The WebView has gained focus while we do not have 5168 // windowfocus. When our window lost focus, we should have 5169 // called nativeRecordButtons(false...) 5170 } 5171 } else { 5172 // When we lost focus, unless focus went to the TextView (which is 5173 // true if we are in editing mode), stop drawing the cursor ring. 5174 if (!inEditingMode()) { 5175 mDrawCursorRing = false; 5176 if (mNativeClass != 0) { 5177 nativeRecordButtons(false, false, true); 5178 } 5179 setFocusControllerActive(false); 5180 } 5181 mGotKeyDown = false; 5182 } 5183 5184 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5185 } 5186 5187 void setGLRectViewport() { 5188 // Use the getGlobalVisibleRect() to get the intersection among the parents 5189 // visible == false means we're clipped - send a null rect down to indicate that 5190 // we should not draw 5191 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5192 if (visible) { 5193 // Then need to invert the Y axis, just for GL 5194 View rootView = getRootView(); 5195 int rootViewHeight = rootView.getHeight(); 5196 int savedWebViewBottom = mGLRectViewport.bottom; 5197 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeight(); 5198 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5199 mGLViewportEmpty = false; 5200 } else { 5201 mGLViewportEmpty = true; 5202 } 5203 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport); 5204 } 5205 5206 /** 5207 * @hide 5208 */ 5209 @Override 5210 protected boolean setFrame(int left, int top, int right, int bottom) { 5211 boolean changed = super.setFrame(left, top, right, bottom); 5212 if (!changed && mHeightCanMeasure) { 5213 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5214 // in WebViewCore after we get the first layout. We do call 5215 // requestLayout() when we get contentSizeChanged(). But the View 5216 // system won't call onSizeChanged if the dimension is not changed. 5217 // In this case, we need to call sendViewSizeZoom() explicitly to 5218 // notify the WebKit about the new dimensions. 5219 sendViewSizeZoom(false); 5220 } 5221 setGLRectViewport(); 5222 return changed; 5223 } 5224 5225 @Override 5226 protected void onSizeChanged(int w, int h, int ow, int oh) { 5227 super.onSizeChanged(w, h, ow, oh); 5228 5229 // adjust the max viewport width depending on the view dimensions. This 5230 // is to ensure the scaling is not going insane. So do not shrink it if 5231 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5232 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5233 if (newMaxViewportWidth > sMaxViewportWidth) { 5234 sMaxViewportWidth = newMaxViewportWidth; 5235 } 5236 5237 mZoomManager.onSizeChanged(w, h, ow, oh); 5238 } 5239 5240 @Override 5241 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5242 super.onScrollChanged(l, t, oldl, oldt); 5243 if (!mInOverScrollMode) { 5244 sendOurVisibleRect(); 5245 // update WebKit if visible title bar height changed. The logic is same 5246 // as getVisibleTitleHeight. 5247 int titleHeight = getTitleHeight(); 5248 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5249 sendViewSizeZoom(false); 5250 } 5251 } 5252 } 5253 5254 @Override 5255 public boolean dispatchKeyEvent(KeyEvent event) { 5256 boolean dispatch = true; 5257 5258 // Textfields, plugins, and contentEditable nodes need to receive the 5259 // shift up key even if another key was released while the shift key 5260 // was held down. 5261 boolean inEditingMode = inEditingMode(); 5262 if (!inEditingMode && (mNativeClass == 0 5263 || !nativePageShouldHandleShiftAndArrows())) { 5264 if (event.getAction() == KeyEvent.ACTION_DOWN) { 5265 mGotKeyDown = true; 5266 } else { 5267 if (!mGotKeyDown && event.getAction() != KeyEvent.ACTION_MULTIPLE) { 5268 /* 5269 * We got a key up for which we were not the recipient of 5270 * the original key down. Don't give it to the view. 5271 */ 5272 dispatch = false; 5273 } 5274 mGotKeyDown = false; 5275 } 5276 } 5277 5278 if (dispatch) { 5279 if (inEditingMode) { 5280 // Ensure that the WebTextView gets the event, even if it does 5281 // not currently have a bounds. 5282 return mWebTextView.dispatchKeyEvent(event); 5283 } else { 5284 return super.dispatchKeyEvent(event); 5285 } 5286 } else { 5287 // We didn't dispatch, so let something else handle the key 5288 return false; 5289 } 5290 } 5291 5292 // Here are the snap align logic: 5293 // 1. If it starts nearly horizontally or vertically, snap align; 5294 // 2. If there is a dramitic direction change, let it go; 5295 // 3. If there is a same direction back and forth, lock it. 5296 5297 // adjustable parameters 5298 private int mMinLockSnapReverseDistance; 5299 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5300 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5301 5302 private boolean hitFocusedPlugin(int contentX, int contentY) { 5303 if (DebugFlags.WEB_VIEW) { 5304 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5305 Rect r = nativeFocusNodeBounds(); 5306 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5307 + ", " + r.right + ", " + r.bottom + ")"); 5308 } 5309 return nativeFocusIsPlugin() 5310 && nativeFocusNodeBounds().contains(contentX, contentY); 5311 } 5312 5313 private boolean shouldForwardTouchEvent() { 5314 return mFullScreenHolder != null || (mForwardTouchEvents 5315 && !mSelectingText 5316 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 5317 } 5318 5319 private boolean inFullScreenMode() { 5320 return mFullScreenHolder != null; 5321 } 5322 5323 private void dismissFullScreenMode() { 5324 if (inFullScreenMode()) { 5325 mFullScreenHolder.dismiss(); 5326 mFullScreenHolder = null; 5327 } 5328 } 5329 5330 void onPinchToZoomAnimationStart() { 5331 // cancel the single touch handling 5332 cancelTouch(); 5333 onZoomAnimationStart(); 5334 } 5335 5336 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5337 onZoomAnimationEnd(); 5338 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5339 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5340 // as it may trigger the unwanted fling. 5341 mTouchMode = TOUCH_PINCH_DRAG; 5342 mConfirmMove = true; 5343 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5344 } 5345 5346 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5347 // layer is found. 5348 private void startScrollingLayer(float x, float y) { 5349 int contentX = viewToContentX((int) x + mScrollX); 5350 int contentY = viewToContentY((int) y + mScrollY); 5351 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5352 mScrollingLayerRect, mScrollingLayerBounds); 5353 if (mScrollingLayer != 0) { 5354 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5355 } 5356 } 5357 5358 // 1/(density * density) used to compute the distance between points. 5359 // Computed in init(). 5360 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5361 5362 // The distance between two points reported in onTouchEvent scaled by the 5363 // density of the screen. 5364 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5365 5366 @Override 5367 public boolean onTouchEvent(MotionEvent ev) { 5368 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5369 return false; 5370 } 5371 5372 if (DebugFlags.WEB_VIEW) { 5373 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5374 + " mTouchMode=" + mTouchMode 5375 + " numPointers=" + ev.getPointerCount()); 5376 } 5377 5378 int action = ev.getActionMasked(); 5379 if (ev.getPointerCount() > 1) { // Multi-touch 5380 mIsHandlingMultiTouch = true; 5381 5382 // If WebKit already showed no interests in this sequence of events, 5383 // WebView handles them directly. 5384 if (mPreventDefault == PREVENT_DEFAULT_NO && action == MotionEvent.ACTION_MOVE) { 5385 handleMultiTouchInWebView(ev); 5386 } else { 5387 passMultiTouchToWebKit(ev); 5388 } 5389 return true; 5390 } 5391 5392 // Skip ACTION_MOVE for single touch if it's still handling multi-touch. 5393 if (mIsHandlingMultiTouch && action == MotionEvent.ACTION_MOVE) { 5394 return false; 5395 } 5396 5397 return handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 5398 } 5399 5400 /* 5401 * Common code for single touch and multi-touch. 5402 * (x, y) denotes current focus point, which is the touch point for single touch 5403 * and the middle point for multi-touch. 5404 */ 5405 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5406 long eventTime = ev.getEventTime(); 5407 5408 5409 // Due to the touch screen edge effect, a touch closer to the edge 5410 // always snapped to the edge. As getViewWidth() can be different from 5411 // getWidth() due to the scrollbar, adjusting the point to match 5412 // getViewWidth(). Same applied to the height. 5413 x = Math.min(x, getViewWidth() - 1); 5414 y = Math.min(y, getViewHeightWithTitle() - 1); 5415 5416 int deltaX = mLastTouchX - x; 5417 int deltaY = mLastTouchY - y; 5418 int contentX = viewToContentX(x + mScrollX); 5419 int contentY = viewToContentY(y + mScrollY); 5420 5421 switch (action) { 5422 case MotionEvent.ACTION_DOWN: { 5423 mPreventDefault = PREVENT_DEFAULT_NO; 5424 mConfirmMove = false; 5425 mIsHandlingMultiTouch = false; 5426 mInitialHitTestResult = null; 5427 if (!mScroller.isFinished()) { 5428 // stop the current scroll animation, but if this is 5429 // the start of a fling, allow it to add to the current 5430 // fling's velocity 5431 mScroller.abortAnimation(); 5432 mTouchMode = TOUCH_DRAG_START_MODE; 5433 mConfirmMove = true; 5434 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5435 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5436 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5437 if (getSettings().supportTouchOnly()) { 5438 removeTouchHighlight(true); 5439 } 5440 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5441 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5442 } else { 5443 // commit the short press action for the previous tap 5444 doShortPress(); 5445 mTouchMode = TOUCH_INIT_MODE; 5446 mDeferTouchProcess = (!inFullScreenMode() 5447 && mForwardTouchEvents) ? hitFocusedPlugin( 5448 contentX, contentY) : false; 5449 } 5450 } else { // the normal case 5451 mTouchMode = TOUCH_INIT_MODE; 5452 mDeferTouchProcess = (!inFullScreenMode() 5453 && mForwardTouchEvents) ? hitFocusedPlugin( 5454 contentX, contentY) : false; 5455 mWebViewCore.sendMessage( 5456 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5457 if (getSettings().supportTouchOnly()) { 5458 TouchHighlightData data = new TouchHighlightData(); 5459 data.mX = contentX; 5460 data.mY = contentY; 5461 data.mSlop = viewToContentDimension(mNavSlop); 5462 mWebViewCore.sendMessageDelayed( 5463 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5464 ViewConfiguration.getTapTimeout()); 5465 if (DEBUG_TOUCH_HIGHLIGHT) { 5466 if (getSettings().getNavDump()) { 5467 mTouchHighlightX = (int) x + mScrollX; 5468 mTouchHighlightY = (int) y + mScrollY; 5469 mPrivateHandler.postDelayed(new Runnable() { 5470 public void run() { 5471 mTouchHighlightX = mTouchHighlightY = 0; 5472 invalidate(); 5473 } 5474 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5475 } 5476 } 5477 } 5478 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5479 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5480 (eventTime - mLastTouchUpTime), eventTime); 5481 } 5482 if (mSelectingText) { 5483 mDrawSelectionPointer = false; 5484 mSelectionStarted = nativeStartSelection(contentX, contentY); 5485 if (DebugFlags.WEB_VIEW) { 5486 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5487 } 5488 invalidate(); 5489 } 5490 } 5491 // Trigger the link 5492 if (mTouchMode == TOUCH_INIT_MODE 5493 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5494 mPrivateHandler.sendEmptyMessageDelayed( 5495 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5496 mPrivateHandler.sendEmptyMessageDelayed( 5497 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5498 if (inFullScreenMode() || mDeferTouchProcess) { 5499 mPreventDefault = PREVENT_DEFAULT_YES; 5500 } else if (mForwardTouchEvents) { 5501 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5502 } else { 5503 mPreventDefault = PREVENT_DEFAULT_NO; 5504 } 5505 // pass the touch events from UI thread to WebCore thread 5506 if (shouldForwardTouchEvent()) { 5507 TouchEventData ted = new TouchEventData(); 5508 ted.mAction = action; 5509 ted.mIds = new int[1]; 5510 ted.mIds[0] = ev.getPointerId(0); 5511 ted.mPoints = new Point[1]; 5512 ted.mPoints[0] = new Point(contentX, contentY); 5513 ted.mMetaState = ev.getMetaState(); 5514 ted.mReprocess = mDeferTouchProcess; 5515 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5516 if (mDeferTouchProcess) { 5517 // still needs to set them for compute deltaX/Y 5518 mLastTouchX = x; 5519 mLastTouchY = y; 5520 break; 5521 } 5522 if (!inFullScreenMode()) { 5523 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5524 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5525 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5526 action, 0), TAP_TIMEOUT); 5527 } 5528 } 5529 } 5530 startTouch(x, y, eventTime); 5531 break; 5532 } 5533 case MotionEvent.ACTION_MOVE: { 5534 boolean firstMove = false; 5535 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5536 >= mTouchSlopSquare) { 5537 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5538 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5539 mConfirmMove = true; 5540 firstMove = true; 5541 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5542 mTouchMode = TOUCH_INIT_MODE; 5543 } 5544 if (getSettings().supportTouchOnly()) { 5545 removeTouchHighlight(true); 5546 } 5547 } 5548 // pass the touch events from UI thread to WebCore thread 5549 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5550 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5551 TouchEventData ted = new TouchEventData(); 5552 ted.mAction = action; 5553 ted.mIds = new int[1]; 5554 ted.mIds[0] = ev.getPointerId(0); 5555 ted.mPoints = new Point[1]; 5556 ted.mPoints[0] = new Point(contentX, contentY); 5557 ted.mMetaState = ev.getMetaState(); 5558 ted.mReprocess = mDeferTouchProcess; 5559 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5560 mLastSentTouchTime = eventTime; 5561 if (mDeferTouchProcess) { 5562 break; 5563 } 5564 if (firstMove && !inFullScreenMode()) { 5565 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5566 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5567 action, 0), TAP_TIMEOUT); 5568 } 5569 } 5570 if (mTouchMode == TOUCH_DONE_MODE 5571 || mPreventDefault == PREVENT_DEFAULT_YES) { 5572 // no dragging during scroll zoom animation, or when prevent 5573 // default is yes 5574 break; 5575 } 5576 if (mVelocityTracker == null) { 5577 Log.e(LOGTAG, "Got null mVelocityTracker when " 5578 + "mPreventDefault = " + mPreventDefault 5579 + " mDeferTouchProcess = " + mDeferTouchProcess 5580 + " mTouchMode = " + mTouchMode); 5581 } else { 5582 mVelocityTracker.addMovement(ev); 5583 } 5584 if (mSelectingText && mSelectionStarted) { 5585 if (DebugFlags.WEB_VIEW) { 5586 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5587 } 5588 ViewParent parent = getParent(); 5589 if (parent != null) { 5590 parent.requestDisallowInterceptTouchEvent(true); 5591 } 5592 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 5593 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 5594 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 5595 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 5596 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 5597 && !mSentAutoScrollMessage) { 5598 mSentAutoScrollMessage = true; 5599 mPrivateHandler.sendEmptyMessageDelayed( 5600 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5601 } 5602 if (deltaX != 0 || deltaY != 0) { 5603 nativeExtendSelection(contentX, contentY); 5604 invalidate(); 5605 } 5606 break; 5607 } 5608 5609 if (mTouchMode != TOUCH_DRAG_MODE && 5610 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5611 5612 if (!mConfirmMove) { 5613 break; 5614 } 5615 5616 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5617 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5618 // track mLastTouchTime as we may need to do fling at 5619 // ACTION_UP 5620 mLastTouchTime = eventTime; 5621 break; 5622 } 5623 5624 // Only lock dragging to one axis if we don't have a scale in progress. 5625 // Scaling implies free-roaming movement. Note this is only ever a question 5626 // if mZoomManager.supportsPanDuringZoom() is true. 5627 final ScaleGestureDetector detector = 5628 mZoomManager.getMultiTouchGestureDetector(); 5629 if (detector == null || !detector.isInProgress()) { 5630 // if it starts nearly horizontal or vertical, enforce it 5631 int ax = Math.abs(deltaX); 5632 int ay = Math.abs(deltaY); 5633 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5634 mSnapScrollMode = SNAP_X; 5635 mSnapPositive = deltaX > 0; 5636 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5637 mSnapScrollMode = SNAP_Y; 5638 mSnapPositive = deltaY > 0; 5639 } 5640 } 5641 5642 mTouchMode = TOUCH_DRAG_MODE; 5643 mLastTouchX = x; 5644 mLastTouchY = y; 5645 deltaX = 0; 5646 deltaY = 0; 5647 5648 startScrollingLayer(x, y); 5649 startDrag(); 5650 } 5651 5652 // do pan 5653 boolean done = false; 5654 boolean keepScrollBarsVisible = false; 5655 if (deltaX == 0 && deltaY == 0) { 5656 keepScrollBarsVisible = done = true; 5657 } else { 5658 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5659 int ax = Math.abs(deltaX); 5660 int ay = Math.abs(deltaY); 5661 if (mSnapScrollMode == SNAP_X) { 5662 // radical change means getting out of snap mode 5663 if (ay > MAX_SLOPE_FOR_DIAG * ax 5664 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5665 mSnapScrollMode = SNAP_NONE; 5666 } 5667 // reverse direction means lock in the snap mode 5668 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5669 (mSnapPositive 5670 ? deltaX < -mMinLockSnapReverseDistance 5671 : deltaX > mMinLockSnapReverseDistance)) { 5672 mSnapScrollMode |= SNAP_LOCK; 5673 } 5674 } else { 5675 // radical change means getting out of snap mode 5676 if (ax > MAX_SLOPE_FOR_DIAG * ay 5677 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5678 mSnapScrollMode = SNAP_NONE; 5679 } 5680 // reverse direction means lock in the snap mode 5681 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5682 (mSnapPositive 5683 ? deltaY < -mMinLockSnapReverseDistance 5684 : deltaY > mMinLockSnapReverseDistance)) { 5685 mSnapScrollMode |= SNAP_LOCK; 5686 } 5687 } 5688 } 5689 if (mSnapScrollMode != SNAP_NONE) { 5690 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5691 deltaY = 0; 5692 } else { 5693 deltaX = 0; 5694 } 5695 } 5696 if ((deltaX | deltaY) != 0) { 5697 if (deltaX != 0) { 5698 mLastTouchX = x; 5699 } 5700 if (deltaY != 0) { 5701 mLastTouchY = y; 5702 } 5703 mHeldMotionless = MOTIONLESS_FALSE; 5704 } 5705 mLastTouchTime = eventTime; 5706 mUserScroll = true; 5707 } 5708 5709 doDrag(deltaX, deltaY); 5710 5711 // Turn off scrollbars when dragging a layer. 5712 if (keepScrollBarsVisible && 5713 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5714 if (mHeldMotionless != MOTIONLESS_TRUE) { 5715 mHeldMotionless = MOTIONLESS_TRUE; 5716 invalidate(); 5717 } 5718 // keep the scrollbar on the screen even there is no scroll 5719 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5720 false); 5721 // return false to indicate that we can't pan out of the 5722 // view space 5723 return !done; 5724 } 5725 break; 5726 } 5727 case MotionEvent.ACTION_UP: { 5728 if (!isFocused()) requestFocus(); 5729 // pass the touch events from UI thread to WebCore thread 5730 if (shouldForwardTouchEvent()) { 5731 TouchEventData ted = new TouchEventData(); 5732 ted.mIds = new int[1]; 5733 ted.mIds[0] = ev.getPointerId(0); 5734 ted.mAction = action; 5735 ted.mPoints = new Point[1]; 5736 ted.mPoints[0] = new Point(contentX, contentY); 5737 ted.mMetaState = ev.getMetaState(); 5738 ted.mReprocess = mDeferTouchProcess; 5739 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5740 } 5741 mLastTouchUpTime = eventTime; 5742 if (mSentAutoScrollMessage) { 5743 mAutoScrollX = mAutoScrollY = 0; 5744 } 5745 switch (mTouchMode) { 5746 case TOUCH_DOUBLE_TAP_MODE: // double tap 5747 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5748 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5749 if (inFullScreenMode() || mDeferTouchProcess) { 5750 TouchEventData ted = new TouchEventData(); 5751 ted.mIds = new int[1]; 5752 ted.mIds[0] = ev.getPointerId(0); 5753 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5754 ted.mPoints = new Point[1]; 5755 ted.mPoints[0] = new Point(contentX, contentY); 5756 ted.mMetaState = ev.getMetaState(); 5757 ted.mReprocess = mDeferTouchProcess; 5758 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5759 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5760 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5761 mTouchMode = TOUCH_DONE_MODE; 5762 } 5763 break; 5764 case TOUCH_INIT_MODE: // tap 5765 case TOUCH_SHORTPRESS_START_MODE: 5766 case TOUCH_SHORTPRESS_MODE: 5767 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5768 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5769 if (mConfirmMove) { 5770 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5771 " WebCore's response for touch down."); 5772 if (mPreventDefault != PREVENT_DEFAULT_YES 5773 && (computeMaxScrollX() > 0 5774 || computeMaxScrollY() > 0)) { 5775 // If the user has performed a very quick touch 5776 // sequence it is possible that we may get here 5777 // before WebCore has had a chance to process the events. 5778 // In this case, any call to preventDefault in the 5779 // JS touch handler will not have been executed yet. 5780 // Hence we will see both the UI (now) and WebCore 5781 // (when context switches) handling the event, 5782 // regardless of whether the web developer actually 5783 // doeses preventDefault in their touch handler. This 5784 // is the nature of our asynchronous touch model. 5785 5786 // we will not rewrite drag code here, but we 5787 // will try fling if it applies. 5788 WebViewCore.reducePriority(); 5789 // to get better performance, pause updating the 5790 // picture 5791 WebViewCore.pauseUpdatePicture(mWebViewCore); 5792 // fall through to TOUCH_DRAG_MODE 5793 } else { 5794 // WebKit may consume the touch event and modify 5795 // DOM. drawContentPicture() will be called with 5796 // animateSroll as true for better performance. 5797 // Force redraw in high-quality. 5798 invalidate(); 5799 break; 5800 } 5801 } else { 5802 if (mSelectingText) { 5803 // tapping on selection or controls does nothing 5804 if (!nativeHitSelection(contentX, contentY)) { 5805 selectionDone(); 5806 } 5807 break; 5808 } 5809 // only trigger double tap if the WebView is 5810 // scalable 5811 if (mTouchMode == TOUCH_INIT_MODE 5812 && (canZoomIn() || canZoomOut())) { 5813 mPrivateHandler.sendEmptyMessageDelayed( 5814 RELEASE_SINGLE_TAP, ViewConfiguration 5815 .getDoubleTapTimeout()); 5816 } else { 5817 doShortPress(); 5818 } 5819 break; 5820 } 5821 case TOUCH_DRAG_MODE: 5822 case TOUCH_DRAG_LAYER_MODE: 5823 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5824 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5825 // if the user waits a while w/o moving before the 5826 // up, we don't want to do a fling 5827 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5828 if (mVelocityTracker == null) { 5829 Log.e(LOGTAG, "Got null mVelocityTracker when " 5830 + "mPreventDefault = " 5831 + mPreventDefault 5832 + " mDeferTouchProcess = " 5833 + mDeferTouchProcess); 5834 } else { 5835 mVelocityTracker.addMovement(ev); 5836 } 5837 // set to MOTIONLESS_IGNORE so that it won't keep 5838 // removing and sending message in 5839 // drawCoreAndCursorRing() 5840 mHeldMotionless = MOTIONLESS_IGNORE; 5841 doFling(); 5842 break; 5843 } else { 5844 if (mScroller.springBack(mScrollX, mScrollY, 0, 5845 computeMaxScrollX(), 0, 5846 computeMaxScrollY())) { 5847 invalidate(); 5848 } 5849 } 5850 // redraw in high-quality, as we're done dragging 5851 mHeldMotionless = MOTIONLESS_TRUE; 5852 invalidate(); 5853 // fall through 5854 case TOUCH_DRAG_START_MODE: 5855 // TOUCH_DRAG_START_MODE should not happen for the real 5856 // device as we almost certain will get a MOVE. But this 5857 // is possible on emulator. 5858 mLastVelocity = 0; 5859 WebViewCore.resumePriority(); 5860 if (!mSelectingText) { 5861 WebViewCore.resumeUpdatePicture(mWebViewCore); 5862 } 5863 break; 5864 } 5865 stopTouch(); 5866 break; 5867 } 5868 case MotionEvent.ACTION_CANCEL: { 5869 if (mTouchMode == TOUCH_DRAG_MODE) { 5870 mScroller.springBack(mScrollX, mScrollY, 0, 5871 computeMaxScrollX(), 0, computeMaxScrollY()); 5872 invalidate(); 5873 } 5874 cancelWebCoreTouchEvent(contentX, contentY, false); 5875 cancelTouch(); 5876 break; 5877 } 5878 } 5879 return true; 5880 } 5881 5882 private void passMultiTouchToWebKit(MotionEvent ev) { 5883 TouchEventData ted = new TouchEventData(); 5884 ted.mAction = ev.getActionMasked(); 5885 final int count = ev.getPointerCount(); 5886 ted.mIds = new int[count]; 5887 ted.mPoints = new Point[count]; 5888 for (int c = 0; c < count; c++) { 5889 ted.mIds[c] = ev.getPointerId(c); 5890 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5891 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5892 ted.mPoints[c] = new Point(x, y); 5893 } 5894 ted.mMetaState = ev.getMetaState(); 5895 ted.mReprocess = true; 5896 ted.mMotionEvent = MotionEvent.obtain(ev); 5897 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5898 cancelLongPress(); 5899 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5900 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5901 } 5902 5903 private void handleMultiTouchInWebView(MotionEvent ev) { 5904 if (DebugFlags.WEB_VIEW) { 5905 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 5906 + " mTouchMode=" + mTouchMode 5907 + " numPointers=" + ev.getPointerCount() 5908 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 5909 } 5910 5911 final ScaleGestureDetector detector = 5912 mZoomManager.getMultiTouchGestureDetector(); 5913 5914 // A few apps use WebView but don't instantiate gesture detector. 5915 // We don't need to support multi touch for them. 5916 if (detector == null) return; 5917 5918 float x = ev.getX(); 5919 float y = ev.getY(); 5920 5921 if (!detector.isInProgress() && 5922 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 5923 // Insert a fake pointer down event in order to start 5924 // the zoom scale detector. 5925 MotionEvent temp = MotionEvent.obtain(ev); 5926 // Clear the original event and set it to 5927 // ACTION_POINTER_DOWN. 5928 try { 5929 temp.setAction(temp.getAction() & 5930 ~MotionEvent.ACTION_MASK | 5931 MotionEvent.ACTION_POINTER_DOWN); 5932 detector.onTouchEvent(temp); 5933 } finally { 5934 temp.recycle(); 5935 } 5936 } 5937 5938 detector.onTouchEvent(ev); 5939 5940 if (detector.isInProgress()) { 5941 if (DebugFlags.WEB_VIEW) { 5942 Log.v(LOGTAG, "detector is in progress"); 5943 } 5944 mLastTouchTime = ev.getEventTime(); 5945 x = detector.getFocusX(); 5946 y = detector.getFocusY(); 5947 5948 cancelLongPress(); 5949 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5950 if (!mZoomManager.supportsPanDuringZoom()) { 5951 return; 5952 } 5953 mTouchMode = TOUCH_DRAG_MODE; 5954 if (mVelocityTracker == null) { 5955 mVelocityTracker = VelocityTracker.obtain(); 5956 } 5957 } 5958 5959 int action = ev.getActionMasked(); 5960 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5961 cancelTouch(); 5962 action = MotionEvent.ACTION_DOWN; 5963 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5964 // set mLastTouchX/Y to the remaining point 5965 mLastTouchX = Math.round(x); 5966 mLastTouchY = Math.round(y); 5967 mIsHandlingMultiTouch = false; 5968 } else if (action == MotionEvent.ACTION_MOVE) { 5969 // negative x or y indicate it is on the edge, skip it. 5970 if (x < 0 || y < 0) { 5971 return; 5972 } 5973 } 5974 5975 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 5976 } 5977 5978 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5979 if (shouldForwardTouchEvent()) { 5980 if (removeEvents) { 5981 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5982 } 5983 TouchEventData ted = new TouchEventData(); 5984 ted.mIds = new int[1]; 5985 ted.mIds[0] = 0; 5986 ted.mPoints = new Point[1]; 5987 ted.mPoints[0] = new Point(x, y); 5988 ted.mAction = MotionEvent.ACTION_CANCEL; 5989 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5990 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5991 } 5992 } 5993 5994 private void startTouch(float x, float y, long eventTime) { 5995 // Remember where the motion event started 5996 mLastTouchX = Math.round(x); 5997 mLastTouchY = Math.round(y); 5998 mLastTouchTime = eventTime; 5999 mVelocityTracker = VelocityTracker.obtain(); 6000 mSnapScrollMode = SNAP_NONE; 6001 } 6002 6003 private void startDrag() { 6004 WebViewCore.reducePriority(); 6005 // to get better performance, pause updating the picture 6006 WebViewCore.pauseUpdatePicture(mWebViewCore); 6007 if (!mDragFromTextInput) { 6008 nativeHideCursor(); 6009 } 6010 6011 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6012 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6013 mZoomManager.invokeZoomPicker(); 6014 } 6015 } 6016 6017 private void doDrag(int deltaX, int deltaY) { 6018 if ((deltaX | deltaY) != 0) { 6019 int oldX = mScrollX; 6020 int oldY = mScrollY; 6021 int rangeX = computeMaxScrollX(); 6022 int rangeY = computeMaxScrollY(); 6023 int overscrollDistance = mOverscrollDistance; 6024 6025 // Check for the original scrolling layer in case we change 6026 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6027 // reached the edge of a layer but mScrollingLayer will be non-zero 6028 // if we initiated the drag on a layer. 6029 if (mScrollingLayer != 0) { 6030 final int contentX = viewToContentDimension(deltaX); 6031 final int contentY = viewToContentDimension(deltaY); 6032 6033 // Check the scrolling bounds to see if we will actually do any 6034 // scrolling. The rectangle is in document coordinates. 6035 final int maxX = mScrollingLayerRect.right; 6036 final int maxY = mScrollingLayerRect.bottom; 6037 final int resultX = Math.max(0, 6038 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6039 final int resultY = Math.max(0, 6040 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6041 6042 if (resultX != mScrollingLayerRect.left || 6043 resultY != mScrollingLayerRect.top) { 6044 // In case we switched to dragging the page. 6045 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6046 deltaX = contentX; 6047 deltaY = contentY; 6048 oldX = mScrollingLayerRect.left; 6049 oldY = mScrollingLayerRect.top; 6050 rangeX = maxX; 6051 rangeY = maxY; 6052 } else { 6053 // Scroll the main page if we are not going to scroll the 6054 // layer. This does not reset mScrollingLayer in case the 6055 // user changes directions and the layer can scroll the 6056 // other way. 6057 mTouchMode = TOUCH_DRAG_MODE; 6058 } 6059 } 6060 6061 if (mOverScrollGlow != null) { 6062 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6063 } 6064 6065 overScrollBy(deltaX, deltaY, oldX, oldY, 6066 rangeX, rangeY, 6067 mOverscrollDistance, mOverscrollDistance, true); 6068 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6069 invalidate(); 6070 } 6071 } 6072 mZoomManager.keepZoomPickerVisible(); 6073 } 6074 6075 private void stopTouch() { 6076 // we also use mVelocityTracker == null to tell us that we are 6077 // not "moving around", so we can take the slower/prettier 6078 // mode in the drawing code 6079 if (mVelocityTracker != null) { 6080 mVelocityTracker.recycle(); 6081 mVelocityTracker = null; 6082 } 6083 6084 // Release any pulled glows 6085 if (mOverScrollGlow != null) { 6086 mOverScrollGlow.releaseAll(); 6087 } 6088 } 6089 6090 private void cancelTouch() { 6091 // we also use mVelocityTracker == null to tell us that we are 6092 // not "moving around", so we can take the slower/prettier 6093 // mode in the drawing code 6094 if (mVelocityTracker != null) { 6095 mVelocityTracker.recycle(); 6096 mVelocityTracker = null; 6097 } 6098 6099 if ((mTouchMode == TOUCH_DRAG_MODE 6100 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6101 WebViewCore.resumePriority(); 6102 WebViewCore.resumeUpdatePicture(mWebViewCore); 6103 } 6104 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6105 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6106 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6107 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6108 if (getSettings().supportTouchOnly()) { 6109 removeTouchHighlight(true); 6110 } 6111 mHeldMotionless = MOTIONLESS_TRUE; 6112 mTouchMode = TOUCH_DONE_MODE; 6113 nativeHideCursor(); 6114 } 6115 6116 private long mTrackballFirstTime = 0; 6117 private long mTrackballLastTime = 0; 6118 private float mTrackballRemainsX = 0.0f; 6119 private float mTrackballRemainsY = 0.0f; 6120 private int mTrackballXMove = 0; 6121 private int mTrackballYMove = 0; 6122 private boolean mSelectingText = false; 6123 private boolean mSelectionStarted = false; 6124 private boolean mExtendSelection = false; 6125 private boolean mDrawSelectionPointer = false; 6126 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6127 private static final int TRACKBALL_TIMEOUT = 200; 6128 private static final int TRACKBALL_WAIT = 100; 6129 private static final int TRACKBALL_SCALE = 400; 6130 private static final int TRACKBALL_SCROLL_COUNT = 5; 6131 private static final int TRACKBALL_MOVE_COUNT = 10; 6132 private static final int TRACKBALL_MULTIPLIER = 3; 6133 private static final int SELECT_CURSOR_OFFSET = 16; 6134 private static final int SELECT_SCROLL = 5; 6135 private int mSelectX = 0; 6136 private int mSelectY = 0; 6137 private boolean mFocusSizeChanged = false; 6138 private boolean mTrackballDown = false; 6139 private long mTrackballUpTime = 0; 6140 private long mLastCursorTime = 0; 6141 private Rect mLastCursorBounds; 6142 6143 // Set by default; BrowserActivity clears to interpret trackball data 6144 // directly for movement. Currently, the framework only passes 6145 // arrow key events, not trackball events, from one child to the next 6146 private boolean mMapTrackballToArrowKeys = true; 6147 6148 public void setMapTrackballToArrowKeys(boolean setMap) { 6149 mMapTrackballToArrowKeys = setMap; 6150 } 6151 6152 void resetTrackballTime() { 6153 mTrackballLastTime = 0; 6154 } 6155 6156 @Override 6157 public boolean onTrackballEvent(MotionEvent ev) { 6158 long time = ev.getEventTime(); 6159 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6160 if (ev.getY() > 0) pageDown(true); 6161 if (ev.getY() < 0) pageUp(true); 6162 return true; 6163 } 6164 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6165 if (mSelectingText) { 6166 return true; // discard press if copy in progress 6167 } 6168 mTrackballDown = true; 6169 if (mNativeClass == 0) { 6170 return false; 6171 } 6172 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6173 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6174 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6175 nativeSelectBestAt(mLastCursorBounds); 6176 } 6177 if (DebugFlags.WEB_VIEW) { 6178 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6179 + " time=" + time 6180 + " mLastCursorTime=" + mLastCursorTime); 6181 } 6182 if (isInTouchMode()) requestFocusFromTouch(); 6183 return false; // let common code in onKeyDown at it 6184 } 6185 if (ev.getAction() == MotionEvent.ACTION_UP) { 6186 // LONG_PRESS_CENTER is set in common onKeyDown 6187 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6188 mTrackballDown = false; 6189 mTrackballUpTime = time; 6190 if (mSelectingText) { 6191 if (mExtendSelection) { 6192 copySelection(); 6193 selectionDone(); 6194 } else { 6195 mExtendSelection = true; 6196 nativeSetExtendSelection(); 6197 invalidate(); // draw the i-beam instead of the arrow 6198 } 6199 return true; // discard press if copy in progress 6200 } 6201 if (DebugFlags.WEB_VIEW) { 6202 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6203 + " time=" + time 6204 ); 6205 } 6206 return false; // let common code in onKeyUp at it 6207 } 6208 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6209 AccessibilityManager.getInstance(mContext).isEnabled()) { 6210 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6211 return false; 6212 } 6213 if (mTrackballDown) { 6214 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6215 return true; // discard move if trackball is down 6216 } 6217 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6218 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6219 return true; 6220 } 6221 // TODO: alternatively we can do panning as touch does 6222 switchOutDrawHistory(); 6223 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6224 if (DebugFlags.WEB_VIEW) { 6225 Log.v(LOGTAG, "onTrackballEvent time=" 6226 + time + " last=" + mTrackballLastTime); 6227 } 6228 mTrackballFirstTime = time; 6229 mTrackballXMove = mTrackballYMove = 0; 6230 } 6231 mTrackballLastTime = time; 6232 if (DebugFlags.WEB_VIEW) { 6233 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6234 } 6235 mTrackballRemainsX += ev.getX(); 6236 mTrackballRemainsY += ev.getY(); 6237 doTrackball(time, ev.getMetaState()); 6238 return true; 6239 } 6240 6241 void moveSelection(float xRate, float yRate) { 6242 if (mNativeClass == 0) 6243 return; 6244 int width = getViewWidth(); 6245 int height = getViewHeight(); 6246 mSelectX += xRate; 6247 mSelectY += yRate; 6248 int maxX = width + mScrollX; 6249 int maxY = height + mScrollY; 6250 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6251 , mSelectX)); 6252 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6253 , mSelectY)); 6254 if (DebugFlags.WEB_VIEW) { 6255 Log.v(LOGTAG, "moveSelection" 6256 + " mSelectX=" + mSelectX 6257 + " mSelectY=" + mSelectY 6258 + " mScrollX=" + mScrollX 6259 + " mScrollY=" + mScrollY 6260 + " xRate=" + xRate 6261 + " yRate=" + yRate 6262 ); 6263 } 6264 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6265 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6266 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6267 : 0; 6268 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6269 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6270 : 0; 6271 pinScrollBy(scrollX, scrollY, true, 0); 6272 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6273 requestRectangleOnScreen(select); 6274 invalidate(); 6275 } 6276 6277 private int scaleTrackballX(float xRate, int width) { 6278 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6279 int nextXMove = xMove; 6280 if (xMove > 0) { 6281 if (xMove > mTrackballXMove) { 6282 xMove -= mTrackballXMove; 6283 } 6284 } else if (xMove < mTrackballXMove) { 6285 xMove -= mTrackballXMove; 6286 } 6287 mTrackballXMove = nextXMove; 6288 return xMove; 6289 } 6290 6291 private int scaleTrackballY(float yRate, int height) { 6292 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6293 int nextYMove = yMove; 6294 if (yMove > 0) { 6295 if (yMove > mTrackballYMove) { 6296 yMove -= mTrackballYMove; 6297 } 6298 } else if (yMove < mTrackballYMove) { 6299 yMove -= mTrackballYMove; 6300 } 6301 mTrackballYMove = nextYMove; 6302 return yMove; 6303 } 6304 6305 private int keyCodeToSoundsEffect(int keyCode) { 6306 switch(keyCode) { 6307 case KeyEvent.KEYCODE_DPAD_UP: 6308 return SoundEffectConstants.NAVIGATION_UP; 6309 case KeyEvent.KEYCODE_DPAD_RIGHT: 6310 return SoundEffectConstants.NAVIGATION_RIGHT; 6311 case KeyEvent.KEYCODE_DPAD_DOWN: 6312 return SoundEffectConstants.NAVIGATION_DOWN; 6313 case KeyEvent.KEYCODE_DPAD_LEFT: 6314 return SoundEffectConstants.NAVIGATION_LEFT; 6315 } 6316 throw new IllegalArgumentException("keyCode must be one of " + 6317 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6318 "KEYCODE_DPAD_LEFT}."); 6319 } 6320 6321 private void doTrackball(long time, int metaState) { 6322 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6323 if (elapsed == 0) { 6324 elapsed = TRACKBALL_TIMEOUT; 6325 } 6326 float xRate = mTrackballRemainsX * 1000 / elapsed; 6327 float yRate = mTrackballRemainsY * 1000 / elapsed; 6328 int viewWidth = getViewWidth(); 6329 int viewHeight = getViewHeight(); 6330 if (mSelectingText) { 6331 if (!mDrawSelectionPointer) { 6332 // The last selection was made by touch, disabling drawing the 6333 // selection pointer. Allow the trackball to adjust the 6334 // position of the touch control. 6335 mSelectX = contentToViewX(nativeSelectionX()); 6336 mSelectY = contentToViewY(nativeSelectionY()); 6337 mDrawSelectionPointer = mExtendSelection = true; 6338 nativeSetExtendSelection(); 6339 } 6340 moveSelection(scaleTrackballX(xRate, viewWidth), 6341 scaleTrackballY(yRate, viewHeight)); 6342 mTrackballRemainsX = mTrackballRemainsY = 0; 6343 return; 6344 } 6345 float ax = Math.abs(xRate); 6346 float ay = Math.abs(yRate); 6347 float maxA = Math.max(ax, ay); 6348 if (DebugFlags.WEB_VIEW) { 6349 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6350 + " xRate=" + xRate 6351 + " yRate=" + yRate 6352 + " mTrackballRemainsX=" + mTrackballRemainsX 6353 + " mTrackballRemainsY=" + mTrackballRemainsY); 6354 } 6355 int width = mContentWidth - viewWidth; 6356 int height = mContentHeight - viewHeight; 6357 if (width < 0) width = 0; 6358 if (height < 0) height = 0; 6359 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6360 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6361 maxA = Math.max(ax, ay); 6362 int count = Math.max(0, (int) maxA); 6363 int oldScrollX = mScrollX; 6364 int oldScrollY = mScrollY; 6365 if (count > 0) { 6366 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6367 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6368 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6369 KeyEvent.KEYCODE_DPAD_RIGHT; 6370 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6371 if (DebugFlags.WEB_VIEW) { 6372 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6373 + " count=" + count 6374 + " mTrackballRemainsX=" + mTrackballRemainsX 6375 + " mTrackballRemainsY=" + mTrackballRemainsY); 6376 } 6377 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6378 for (int i = 0; i < count; i++) { 6379 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6380 } 6381 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6382 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6383 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6384 } 6385 mTrackballRemainsX = mTrackballRemainsY = 0; 6386 } 6387 if (count >= TRACKBALL_SCROLL_COUNT) { 6388 int xMove = scaleTrackballX(xRate, width); 6389 int yMove = scaleTrackballY(yRate, height); 6390 if (DebugFlags.WEB_VIEW) { 6391 Log.v(LOGTAG, "doTrackball pinScrollBy" 6392 + " count=" + count 6393 + " xMove=" + xMove + " yMove=" + yMove 6394 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6395 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6396 ); 6397 } 6398 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6399 xMove = 0; 6400 } 6401 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6402 yMove = 0; 6403 } 6404 if (xMove != 0 || yMove != 0) { 6405 pinScrollBy(xMove, yMove, true, 0); 6406 } 6407 mUserScroll = true; 6408 } 6409 } 6410 6411 /** 6412 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6413 * @return Maximum horizontal scroll position within real content 6414 */ 6415 int computeMaxScrollX() { 6416 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6417 } 6418 6419 /** 6420 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6421 * @return Maximum vertical scroll position within real content 6422 */ 6423 int computeMaxScrollY() { 6424 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6425 - getViewHeightWithTitle(), 0); 6426 } 6427 6428 boolean updateScrollCoordinates(int x, int y) { 6429 int oldX = mScrollX; 6430 int oldY = mScrollY; 6431 mScrollX = x; 6432 mScrollY = y; 6433 if (oldX != mScrollX || oldY != mScrollY) { 6434 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6435 return true; 6436 } else { 6437 return false; 6438 } 6439 } 6440 6441 public void flingScroll(int vx, int vy) { 6442 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6443 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6444 invalidate(); 6445 } 6446 6447 private void doFling() { 6448 if (mVelocityTracker == null) { 6449 return; 6450 } 6451 int maxX = computeMaxScrollX(); 6452 int maxY = computeMaxScrollY(); 6453 6454 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6455 int vx = (int) mVelocityTracker.getXVelocity(); 6456 int vy = (int) mVelocityTracker.getYVelocity(); 6457 6458 int scrollX = mScrollX; 6459 int scrollY = mScrollY; 6460 int overscrollDistance = mOverscrollDistance; 6461 int overflingDistance = mOverflingDistance; 6462 6463 // Use the layer's scroll data if applicable. 6464 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6465 scrollX = mScrollingLayerRect.left; 6466 scrollY = mScrollingLayerRect.top; 6467 maxX = mScrollingLayerRect.right; 6468 maxY = mScrollingLayerRect.bottom; 6469 // No overscrolling for layers. 6470 overscrollDistance = overflingDistance = 0; 6471 } 6472 6473 if (mSnapScrollMode != SNAP_NONE) { 6474 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6475 vy = 0; 6476 } else { 6477 vx = 0; 6478 } 6479 } 6480 if (true /* EMG release: make our fling more like Maps' */) { 6481 // maps cuts their velocity in half 6482 vx = vx * 3 / 4; 6483 vy = vy * 3 / 4; 6484 } 6485 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6486 WebViewCore.resumePriority(); 6487 if (!mSelectingText) { 6488 WebViewCore.resumeUpdatePicture(mWebViewCore); 6489 } 6490 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6491 invalidate(); 6492 } 6493 return; 6494 } 6495 float currentVelocity = mScroller.getCurrVelocity(); 6496 float velocity = (float) Math.hypot(vx, vy); 6497 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6498 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6499 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6500 - Math.atan2(vy, vx))); 6501 final float circle = (float) (Math.PI) * 2.0f; 6502 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6503 vx += currentVelocity * mLastVelX / mLastVelocity; 6504 vy += currentVelocity * mLastVelY / mLastVelocity; 6505 velocity = (float) Math.hypot(vx, vy); 6506 if (DebugFlags.WEB_VIEW) { 6507 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6508 } 6509 } else if (DebugFlags.WEB_VIEW) { 6510 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6511 } 6512 } else if (DebugFlags.WEB_VIEW) { 6513 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6514 + " current=" + currentVelocity 6515 + " vx=" + vx + " vy=" + vy 6516 + " maxX=" + maxX + " maxY=" + maxY 6517 + " scrollX=" + scrollX + " scrollY=" + scrollY 6518 + " layer=" + mScrollingLayer); 6519 } 6520 6521 // Allow sloppy flings without overscrolling at the edges. 6522 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6523 vx = 0; 6524 } 6525 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6526 vy = 0; 6527 } 6528 6529 if (overscrollDistance < overflingDistance) { 6530 if ((vx > 0 && scrollX == -overscrollDistance) || 6531 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6532 vx = 0; 6533 } 6534 if ((vy > 0 && scrollY == -overscrollDistance) || 6535 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6536 vy = 0; 6537 } 6538 } 6539 6540 mLastVelX = vx; 6541 mLastVelY = vy; 6542 mLastVelocity = velocity; 6543 6544 // no horizontal overscroll if the content just fits 6545 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6546 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6547 // Duration is calculated based on velocity. With range boundaries and overscroll 6548 // we may not know how long the final animation will take. (Hence the deprecation 6549 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6550 // resumes during this effect we will take a performance hit. See computeScroll; 6551 // we resume webcore there when the animation is finished. 6552 final int time = mScroller.getDuration(); 6553 6554 // Suppress scrollbars for layer scrolling. 6555 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6556 awakenScrollBars(time); 6557 } 6558 6559 invalidate(); 6560 } 6561 6562 /** 6563 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6564 * in charge of installing this view to the view hierarchy. This view will 6565 * become visible when the user starts scrolling via touch and fade away if 6566 * the user does not interact with it. 6567 * <p/> 6568 * API version 3 introduces a built-in zoom mechanism that is shown 6569 * automatically by the MapView. This is the preferred approach for 6570 * showing the zoom UI. 6571 * 6572 * @deprecated The built-in zoom mechanism is preferred, see 6573 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6574 */ 6575 @Deprecated 6576 public View getZoomControls() { 6577 if (!getSettings().supportZoom()) { 6578 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6579 return null; 6580 } 6581 return mZoomManager.getExternalZoomPicker(); 6582 } 6583 6584 void dismissZoomControl() { 6585 mZoomManager.dismissZoomPicker(); 6586 } 6587 6588 float getDefaultZoomScale() { 6589 return mZoomManager.getDefaultScale(); 6590 } 6591 6592 /** 6593 * @return TRUE if the WebView can be zoomed in. 6594 */ 6595 public boolean canZoomIn() { 6596 return mZoomManager.canZoomIn(); 6597 } 6598 6599 /** 6600 * @return TRUE if the WebView can be zoomed out. 6601 */ 6602 public boolean canZoomOut() { 6603 return mZoomManager.canZoomOut(); 6604 } 6605 6606 /** 6607 * Perform zoom in in the webview 6608 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6609 */ 6610 public boolean zoomIn() { 6611 return mZoomManager.zoomIn(); 6612 } 6613 6614 /** 6615 * Perform zoom out in the webview 6616 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6617 */ 6618 public boolean zoomOut() { 6619 return mZoomManager.zoomOut(); 6620 } 6621 6622 private void updateSelection() { 6623 if (mNativeClass == 0) { 6624 return; 6625 } 6626 // mLastTouchX and mLastTouchY are the point in the current viewport 6627 int contentX = viewToContentX(mLastTouchX + mScrollX); 6628 int contentY = viewToContentY(mLastTouchY + mScrollY); 6629 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 6630 contentX + mNavSlop, contentY + mNavSlop); 6631 nativeSelectBestAt(rect); 6632 mInitialHitTestResult = hitTestResult(null); 6633 } 6634 6635 /** 6636 * Scroll the focused text field to match the WebTextView 6637 * @param xPercent New x position of the WebTextView from 0 to 1. 6638 */ 6639 /*package*/ void scrollFocusedTextInputX(float xPercent) { 6640 if (!inEditingMode() || mWebViewCore == null) { 6641 return; 6642 } 6643 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 6644 new Float(xPercent)); 6645 } 6646 6647 /** 6648 * Scroll the focused textarea vertically to match the WebTextView 6649 * @param y New y position of the WebTextView in view coordinates 6650 */ 6651 /* package */ void scrollFocusedTextInputY(int y) { 6652 if (!inEditingMode() || mWebViewCore == null) { 6653 return; 6654 } 6655 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 6656 } 6657 6658 /** 6659 * Set our starting point and time for a drag from the WebTextView. 6660 */ 6661 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6662 if (!inEditingMode()) { 6663 return; 6664 } 6665 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 6666 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 6667 mLastTouchTime = eventTime; 6668 if (!mScroller.isFinished()) { 6669 abortAnimation(); 6670 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6671 } 6672 mSnapScrollMode = SNAP_NONE; 6673 mVelocityTracker = VelocityTracker.obtain(); 6674 mTouchMode = TOUCH_DRAG_START_MODE; 6675 } 6676 6677 /** 6678 * Given a motion event from the WebTextView, set its location to our 6679 * coordinates, and handle the event. 6680 */ 6681 /*package*/ boolean textFieldDrag(MotionEvent event) { 6682 if (!inEditingMode()) { 6683 return false; 6684 } 6685 mDragFromTextInput = true; 6686 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6687 (float) (mWebTextView.getTop() - mScrollY)); 6688 boolean result = onTouchEvent(event); 6689 mDragFromTextInput = false; 6690 return result; 6691 } 6692 6693 /** 6694 * Due a touch up from a WebTextView. This will be handled by webkit to 6695 * change the selection. 6696 * @param event MotionEvent in the WebTextView's coordinates. 6697 */ 6698 /*package*/ void touchUpOnTextField(MotionEvent event) { 6699 if (!inEditingMode()) { 6700 return; 6701 } 6702 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6703 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6704 nativeMotionUp(x, y, mNavSlop); 6705 } 6706 6707 /** 6708 * Called when pressing the center key or trackball on a textfield. 6709 */ 6710 /*package*/ void centerKeyPressOnTextField() { 6711 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6712 nativeCursorNodePointer()); 6713 } 6714 6715 private void doShortPress() { 6716 if (mNativeClass == 0) { 6717 return; 6718 } 6719 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6720 return; 6721 } 6722 mTouchMode = TOUCH_DONE_MODE; 6723 switchOutDrawHistory(); 6724 // mLastTouchX and mLastTouchY are the point in the current viewport 6725 int contentX = viewToContentX(mLastTouchX + mScrollX); 6726 int contentY = viewToContentY(mLastTouchY + mScrollY); 6727 if (getSettings().supportTouchOnly()) { 6728 removeTouchHighlight(false); 6729 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6730 // use "0" as generation id to inform WebKit to use the same x/y as 6731 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6732 touchUpData.mMoveGeneration = 0; 6733 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6734 } else if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6735 WebViewCore.MotionUpData motionUpData = new WebViewCore 6736 .MotionUpData(); 6737 motionUpData.mFrame = nativeCacheHitFramePointer(); 6738 motionUpData.mNode = nativeCacheHitNodePointer(); 6739 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6740 motionUpData.mX = contentX; 6741 motionUpData.mY = contentY; 6742 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6743 motionUpData); 6744 } else { 6745 doMotionUp(contentX, contentY); 6746 } 6747 } 6748 6749 private void doMotionUp(int contentX, int contentY) { 6750 if (nativeMotionUp(contentX, contentY, mNavSlop) && mLogEvent) { 6751 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6752 } 6753 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6754 playSoundEffect(SoundEffectConstants.CLICK); 6755 } 6756 } 6757 6758 /** 6759 * Returns plugin bounds if x/y in content coordinates corresponds to a 6760 * plugin. Otherwise a NULL rectangle is returned. 6761 */ 6762 Rect getPluginBounds(int x, int y) { 6763 if (nativePointInNavCache(x, y, mNavSlop) && nativeCacheHitIsPlugin()) { 6764 return nativeCacheHitNodeBounds(); 6765 } else { 6766 return null; 6767 } 6768 } 6769 6770 /* 6771 * Return true if the rect (e.g. plugin) is fully visible and maximized 6772 * inside the WebView. 6773 */ 6774 boolean isRectFitOnScreen(Rect rect) { 6775 final int rectWidth = rect.width(); 6776 final int rectHeight = rect.height(); 6777 final int viewWidth = getViewWidth(); 6778 final int viewHeight = getViewHeightWithTitle(); 6779 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 6780 scale = mZoomManager.computeScaleWithLimits(scale); 6781 return !mZoomManager.willScaleTriggerZoom(scale) 6782 && contentToViewX(rect.left) >= mScrollX 6783 && contentToViewX(rect.right) <= mScrollX + viewWidth 6784 && contentToViewY(rect.top) >= mScrollY 6785 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 6786 } 6787 6788 /* 6789 * Maximize and center the rectangle, specified in the document coordinate 6790 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6791 * animated scroll to center it. If the zoom needs to be changed, find the 6792 * zoom center and do a smooth zoom transition. The rect is in document 6793 * coordinates 6794 */ 6795 void centerFitRect(Rect rect) { 6796 final int rectWidth = rect.width(); 6797 final int rectHeight = rect.height(); 6798 final int viewWidth = getViewWidth(); 6799 final int viewHeight = getViewHeightWithTitle(); 6800 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 6801 / rectHeight); 6802 scale = mZoomManager.computeScaleWithLimits(scale); 6803 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6804 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 6805 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 6806 true, 0); 6807 } else { 6808 float actualScale = mZoomManager.getScale(); 6809 float oldScreenX = rect.left * actualScale - mScrollX; 6810 float rectViewX = rect.left * scale; 6811 float rectViewWidth = rectWidth * scale; 6812 float newMaxWidth = mContentWidth * scale; 6813 float newScreenX = (viewWidth - rectViewWidth) / 2; 6814 // pin the newX to the WebView 6815 if (newScreenX > rectViewX) { 6816 newScreenX = rectViewX; 6817 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6818 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6819 } 6820 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6821 / (scale - actualScale); 6822 float oldScreenY = rect.top * actualScale + getTitleHeight() 6823 - mScrollY; 6824 float rectViewY = rect.top * scale + getTitleHeight(); 6825 float rectViewHeight = rectHeight * scale; 6826 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6827 float newScreenY = (viewHeight - rectViewHeight) / 2; 6828 // pin the newY to the WebView 6829 if (newScreenY > rectViewY) { 6830 newScreenY = rectViewY; 6831 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6832 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6833 } 6834 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6835 / (scale - actualScale); 6836 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6837 mZoomManager.startZoomAnimation(scale, false); 6838 } 6839 } 6840 6841 // Called by JNI to handle a touch on a node representing an email address, 6842 // address, or phone number 6843 private void overrideLoading(String url) { 6844 mCallbackProxy.uiOverrideUrlLoading(url); 6845 } 6846 6847 @Override 6848 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6849 // FIXME: If a subwindow is showing find, and the user touches the 6850 // background window, it can steal focus. 6851 if (mFindIsUp) return false; 6852 boolean result = false; 6853 if (inEditingMode()) { 6854 result = mWebTextView.requestFocus(direction, 6855 previouslyFocusedRect); 6856 } else { 6857 result = super.requestFocus(direction, previouslyFocusedRect); 6858 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 6859 // For cases such as GMail, where we gain focus from a direction, 6860 // we want to move to the first available link. 6861 // FIXME: If there are no visible links, we may not want to 6862 int fakeKeyDirection = 0; 6863 switch(direction) { 6864 case View.FOCUS_UP: 6865 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6866 break; 6867 case View.FOCUS_DOWN: 6868 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6869 break; 6870 case View.FOCUS_LEFT: 6871 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6872 break; 6873 case View.FOCUS_RIGHT: 6874 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6875 break; 6876 default: 6877 return result; 6878 } 6879 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6880 navHandledKey(fakeKeyDirection, 1, true, 0); 6881 } 6882 } 6883 } 6884 return result; 6885 } 6886 6887 @Override 6888 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6889 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6890 6891 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6892 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6893 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6894 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6895 6896 int measuredHeight = heightSize; 6897 int measuredWidth = widthSize; 6898 6899 // Grab the content size from WebViewCore. 6900 int contentHeight = contentToViewDimension(mContentHeight); 6901 int contentWidth = contentToViewDimension(mContentWidth); 6902 6903// Log.d(LOGTAG, "------- measure " + heightMode); 6904 6905 if (heightMode != MeasureSpec.EXACTLY) { 6906 mHeightCanMeasure = true; 6907 measuredHeight = contentHeight; 6908 if (heightMode == MeasureSpec.AT_MOST) { 6909 // If we are larger than the AT_MOST height, then our height can 6910 // no longer be measured and we should scroll internally. 6911 if (measuredHeight > heightSize) { 6912 measuredHeight = heightSize; 6913 mHeightCanMeasure = false; 6914 } else if (measuredHeight < heightSize) { 6915 measuredHeight |= MEASURED_STATE_TOO_SMALL; 6916 } 6917 } 6918 } else { 6919 mHeightCanMeasure = false; 6920 } 6921 if (mNativeClass != 0) { 6922 nativeSetHeightCanMeasure(mHeightCanMeasure); 6923 } 6924 // For the width, always use the given size unless unspecified. 6925 if (widthMode == MeasureSpec.UNSPECIFIED) { 6926 mWidthCanMeasure = true; 6927 measuredWidth = contentWidth; 6928 } else { 6929 if (measuredWidth < contentWidth) { 6930 measuredWidth |= MEASURED_STATE_TOO_SMALL; 6931 } 6932 mWidthCanMeasure = false; 6933 } 6934 6935 synchronized (this) { 6936 setMeasuredDimension(measuredWidth, measuredHeight); 6937 } 6938 } 6939 6940 @Override 6941 public boolean requestChildRectangleOnScreen(View child, 6942 Rect rect, 6943 boolean immediate) { 6944 if (mNativeClass == 0) { 6945 return false; 6946 } 6947 // don't scroll while in zoom animation. When it is done, we will adjust 6948 // the necessary components (e.g., WebTextView if it is in editing mode) 6949 if (mZoomManager.isFixedLengthAnimationInProgress()) { 6950 return false; 6951 } 6952 6953 rect.offset(child.getLeft() - child.getScrollX(), 6954 child.getTop() - child.getScrollY()); 6955 6956 Rect content = new Rect(viewToContentX(mScrollX), 6957 viewToContentY(mScrollY), 6958 viewToContentX(mScrollX + getWidth() 6959 - getVerticalScrollbarWidth()), 6960 viewToContentY(mScrollY + getViewHeightWithTitle())); 6961 content = nativeSubtractLayers(content); 6962 int screenTop = contentToViewY(content.top); 6963 int screenBottom = contentToViewY(content.bottom); 6964 int height = screenBottom - screenTop; 6965 int scrollYDelta = 0; 6966 6967 if (rect.bottom > screenBottom) { 6968 int oneThirdOfScreenHeight = height / 3; 6969 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6970 // If the rectangle is too tall to fit in the bottom two thirds 6971 // of the screen, place it at the top. 6972 scrollYDelta = rect.top - screenTop; 6973 } else { 6974 // If the rectangle will still fit on screen, we want its 6975 // top to be in the top third of the screen. 6976 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6977 } 6978 } else if (rect.top < screenTop) { 6979 scrollYDelta = rect.top - screenTop; 6980 } 6981 6982 int screenLeft = contentToViewX(content.left); 6983 int screenRight = contentToViewX(content.right); 6984 int width = screenRight - screenLeft; 6985 int scrollXDelta = 0; 6986 6987 if (rect.right > screenRight && rect.left > screenLeft) { 6988 if (rect.width() > width) { 6989 scrollXDelta += (rect.left - screenLeft); 6990 } else { 6991 scrollXDelta += (rect.right - screenRight); 6992 } 6993 } else if (rect.left < screenLeft) { 6994 scrollXDelta -= (screenLeft - rect.left); 6995 } 6996 6997 if ((scrollYDelta | scrollXDelta) != 0) { 6998 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6999 } 7000 7001 return false; 7002 } 7003 7004 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7005 String replace, int newStart, int newEnd) { 7006 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7007 arg.mReplace = replace; 7008 arg.mNewStart = newStart; 7009 arg.mNewEnd = newEnd; 7010 mTextGeneration++; 7011 arg.mTextGeneration = mTextGeneration; 7012 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7013 } 7014 7015 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7016 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7017 arg.mEvent = event; 7018 arg.mCurrentText = currentText; 7019 // Increase our text generation number, and pass it to webcore thread 7020 mTextGeneration++; 7021 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7022 // WebKit's document state is not saved until about to leave the page. 7023 // To make sure the host application, like Browser, has the up to date 7024 // document state when it goes to background, we force to save the 7025 // document state. 7026 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7027 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7028 cursorData(), 1000); 7029 } 7030 7031 /* package */ synchronized WebViewCore getWebViewCore() { 7032 return mWebViewCore; 7033 } 7034 7035 //------------------------------------------------------------------------- 7036 // Methods can be called from a separate thread, like WebViewCore 7037 // If it needs to call the View system, it has to send message. 7038 //------------------------------------------------------------------------- 7039 7040 /** 7041 * General handler to receive message coming from webkit thread 7042 */ 7043 class PrivateHandler extends Handler { 7044 @Override 7045 public void handleMessage(Message msg) { 7046 // exclude INVAL_RECT_MSG_ID since it is frequently output 7047 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 7048 if (msg.what >= FIRST_PRIVATE_MSG_ID 7049 && msg.what <= LAST_PRIVATE_MSG_ID) { 7050 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 7051 - FIRST_PRIVATE_MSG_ID]); 7052 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 7053 && msg.what <= LAST_PACKAGE_MSG_ID) { 7054 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 7055 - FIRST_PACKAGE_MSG_ID]); 7056 } else { 7057 Log.v(LOGTAG, Integer.toString(msg.what)); 7058 } 7059 } 7060 if (mWebViewCore == null) { 7061 // after WebView's destroy() is called, skip handling messages. 7062 return; 7063 } 7064 switch (msg.what) { 7065 case REMEMBER_PASSWORD: { 7066 mDatabase.setUsernamePassword( 7067 msg.getData().getString("host"), 7068 msg.getData().getString("username"), 7069 msg.getData().getString("password")); 7070 ((Message) msg.obj).sendToTarget(); 7071 break; 7072 } 7073 case NEVER_REMEMBER_PASSWORD: { 7074 mDatabase.setUsernamePassword( 7075 msg.getData().getString("host"), null, null); 7076 ((Message) msg.obj).sendToTarget(); 7077 break; 7078 } 7079 case PREVENT_DEFAULT_TIMEOUT: { 7080 // if timeout happens, cancel it so that it won't block UI 7081 // to continue handling touch events 7082 if ((msg.arg1 == MotionEvent.ACTION_DOWN 7083 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 7084 || (msg.arg1 == MotionEvent.ACTION_MOVE 7085 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 7086 cancelWebCoreTouchEvent( 7087 viewToContentX(mLastTouchX + mScrollX), 7088 viewToContentY(mLastTouchY + mScrollY), 7089 true); 7090 } 7091 break; 7092 } 7093 case SCROLL_SELECT_TEXT: { 7094 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 7095 mSentAutoScrollMessage = false; 7096 break; 7097 } 7098 if (mScrollingLayer == 0) { 7099 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 7100 } else { 7101 mScrollingLayerRect.left += mAutoScrollX; 7102 mScrollingLayerRect.top += mAutoScrollY; 7103 nativeScrollLayer(mScrollingLayer, 7104 mScrollingLayerRect.left, 7105 mScrollingLayerRect.top); 7106 invalidate(); 7107 } 7108 sendEmptyMessageDelayed( 7109 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 7110 break; 7111 } 7112 case SWITCH_TO_SHORTPRESS: { 7113 mInitialHitTestResult = null; // set by updateSelection() 7114 if (mTouchMode == TOUCH_INIT_MODE) { 7115 if (!getSettings().supportTouchOnly() 7116 && mPreventDefault != PREVENT_DEFAULT_YES) { 7117 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 7118 updateSelection(); 7119 } else { 7120 // set to TOUCH_SHORTPRESS_MODE so that it won't 7121 // trigger double tap any more 7122 mTouchMode = TOUCH_SHORTPRESS_MODE; 7123 } 7124 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 7125 mTouchMode = TOUCH_DONE_MODE; 7126 } 7127 break; 7128 } 7129 case SWITCH_TO_LONGPRESS: { 7130 if (getSettings().supportTouchOnly()) { 7131 removeTouchHighlight(false); 7132 } 7133 if (inFullScreenMode() || mDeferTouchProcess) { 7134 TouchEventData ted = new TouchEventData(); 7135 ted.mAction = WebViewCore.ACTION_LONGPRESS; 7136 ted.mIds = new int[1]; 7137 ted.mIds[0] = 0; 7138 ted.mPoints = new Point[1]; 7139 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 7140 viewToContentY(mLastTouchY + mScrollY)); 7141 // metaState for long press is tricky. Should it be the 7142 // state when the press started or when the press was 7143 // released? Or some intermediary key state? For 7144 // simplicity for now, we don't set it. 7145 ted.mMetaState = 0; 7146 ted.mReprocess = mDeferTouchProcess; 7147 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7148 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 7149 mTouchMode = TOUCH_DONE_MODE; 7150 performLongClick(); 7151 } 7152 break; 7153 } 7154 case RELEASE_SINGLE_TAP: { 7155 doShortPress(); 7156 break; 7157 } 7158 case SCROLL_BY_MSG_ID: 7159 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 7160 break; 7161 case SYNC_SCROLL_TO_MSG_ID: 7162 if (mUserScroll) { 7163 // if user has scrolled explicitly, don't sync the 7164 // scroll position any more 7165 mUserScroll = false; 7166 break; 7167 } 7168 setContentScrollTo(msg.arg1, msg.arg2); 7169 break; 7170 case SCROLL_TO_MSG_ID: 7171 if (((Boolean) msg.obj).booleanValue()) { 7172 // This scroll is intended to bring the textfield into 7173 // view, but is only necessary if the IME is showing 7174 InputMethodManager imm = InputMethodManager.peekInstance(); 7175 if (imm == null || !imm.isAcceptingText() 7176 || (!imm.isActive(WebView.this) && (!inEditingMode() 7177 || !imm.isActive(mWebTextView)))) { 7178 break; 7179 } 7180 } 7181 if (setContentScrollTo(msg.arg1, msg.arg2)) { 7182 // if we can't scroll to the exact position due to pin, 7183 // send a message to WebCore to re-scroll when we get a 7184 // new picture 7185 mUserScroll = false; 7186 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 7187 msg.arg1, msg.arg2); 7188 } 7189 break; 7190 case SPAWN_SCROLL_TO_MSG_ID: 7191 spawnContentScrollTo(msg.arg1, msg.arg2); 7192 break; 7193 case UPDATE_ZOOM_RANGE: { 7194 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 7195 // mScrollX contains the new minPrefWidth 7196 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 7197 break; 7198 } 7199 case REPLACE_BASE_CONTENT: { 7200 nativeReplaceBaseContent(msg.arg1); 7201 break; 7202 } 7203 case NEW_PICTURE_MSG_ID: { 7204 // called for new content 7205 mUserScroll = false; 7206 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 7207 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion.getBounds()); 7208 final Point viewSize = draw.mViewSize; 7209 WebViewCore.ViewState viewState = draw.mViewState; 7210 boolean isPictureAfterFirstLayout = viewState != null; 7211 if (isPictureAfterFirstLayout) { 7212 // Reset the last sent data here since dealing with new page. 7213 mLastWidthSent = 0; 7214 mZoomManager.onFirstLayout(draw); 7215 if (!mDrawHistory) { 7216 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 7217 // As we are on a new page, remove the WebTextView. This 7218 // is necessary for page loads driven by webkit, and in 7219 // particular when the user was on a password field, so 7220 // the WebTextView was visible. 7221 clearTextEntry(); 7222 } 7223 } 7224 7225 // We update the layout (i.e. request a layout from the 7226 // view system) if the last view size that we sent to 7227 // WebCore matches the view size of the picture we just 7228 // received in the fixed dimension. 7229 final boolean updateLayout = viewSize.x == mLastWidthSent 7230 && viewSize.y == mLastHeightSent; 7231 recordNewContentSize(draw.mContentSize.x, 7232 draw.mContentSize.y, updateLayout); 7233 if (DebugFlags.WEB_VIEW) { 7234 Rect b = draw.mInvalRegion.getBounds(); 7235 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 7236 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 7237 } 7238 invalidateContentRect(draw.mInvalRegion.getBounds()); 7239 7240 if (mPictureListener != null) { 7241 mPictureListener.onNewPicture(WebView.this, capturePicture()); 7242 } 7243 7244 // update the zoom information based on the new picture 7245 mZoomManager.onNewPicture(draw); 7246 7247 if (draw.mFocusSizeChanged && inEditingMode()) { 7248 mFocusSizeChanged = true; 7249 } 7250 if (isPictureAfterFirstLayout) { 7251 mViewManager.postReadyToDrawAll(); 7252 } 7253 break; 7254 } 7255 case WEBCORE_INITIALIZED_MSG_ID: 7256 // nativeCreate sets mNativeClass to a non-zero value 7257 nativeCreate(msg.arg1); 7258 break; 7259 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 7260 // Make sure that the textfield is currently focused 7261 // and representing the same node as the pointer. 7262 if (inEditingMode() && 7263 mWebTextView.isSameTextField(msg.arg1)) { 7264 if (msg.getData().getBoolean("password")) { 7265 Spannable text = (Spannable) mWebTextView.getText(); 7266 int start = Selection.getSelectionStart(text); 7267 int end = Selection.getSelectionEnd(text); 7268 mWebTextView.setInPassword(true); 7269 // Restore the selection, which may have been 7270 // ruined by setInPassword. 7271 Spannable pword = 7272 (Spannable) mWebTextView.getText(); 7273 Selection.setSelection(pword, start, end); 7274 // If the text entry has created more events, ignore 7275 // this one. 7276 } else if (msg.arg2 == mTextGeneration) { 7277 String text = (String) msg.obj; 7278 if (null == text) { 7279 text = ""; 7280 } 7281 mWebTextView.setTextAndKeepSelection(text); 7282 } 7283 } 7284 break; 7285 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 7286 displaySoftKeyboard(true); 7287 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 7288 case UPDATE_TEXT_SELECTION_MSG_ID: 7289 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 7290 (WebViewCore.TextSelectionData) msg.obj); 7291 break; 7292 case FORM_DID_BLUR: 7293 if (inEditingMode() 7294 && mWebTextView.isSameTextField(msg.arg1)) { 7295 hideSoftKeyboard(); 7296 } 7297 break; 7298 case RETURN_LABEL: 7299 if (inEditingMode() 7300 && mWebTextView.isSameTextField(msg.arg1)) { 7301 mWebTextView.setHint((String) msg.obj); 7302 InputMethodManager imm 7303 = InputMethodManager.peekInstance(); 7304 // The hint is propagated to the IME in 7305 // onCreateInputConnection. If the IME is already 7306 // active, restart it so that its hint text is updated. 7307 if (imm != null && imm.isActive(mWebTextView)) { 7308 imm.restartInput(mWebTextView); 7309 } 7310 } 7311 break; 7312 case UNHANDLED_NAV_KEY: 7313 navHandledKey(msg.arg1, 1, false, 0); 7314 break; 7315 case UPDATE_TEXT_ENTRY_MSG_ID: 7316 // this is sent after finishing resize in WebViewCore. Make 7317 // sure the text edit box is still on the screen. 7318 if (inEditingMode() && nativeCursorIsTextInput()) { 7319 rebuildWebTextView(); 7320 } 7321 break; 7322 case CLEAR_TEXT_ENTRY: 7323 clearTextEntry(); 7324 break; 7325 case INVAL_RECT_MSG_ID: { 7326 Rect r = (Rect)msg.obj; 7327 if (r == null) { 7328 invalidate(); 7329 } else { 7330 // we need to scale r from content into view coords, 7331 // which viewInvalidate() does for us 7332 viewInvalidate(r.left, r.top, r.right, r.bottom); 7333 } 7334 break; 7335 } 7336 case REQUEST_FORM_DATA: 7337 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7338 if (mWebTextView.isSameTextField(msg.arg1)) { 7339 mWebTextView.setAdapterCustom(adapter); 7340 } 7341 break; 7342 case RESUME_WEBCORE_PRIORITY: 7343 WebViewCore.resumePriority(); 7344 WebViewCore.resumeUpdatePicture(mWebViewCore); 7345 break; 7346 7347 case LONG_PRESS_CENTER: 7348 // as this is shared by keydown and trackballdown, reset all 7349 // the states 7350 mGotCenterDown = false; 7351 mTrackballDown = false; 7352 performLongClick(); 7353 break; 7354 7355 case WEBCORE_NEED_TOUCH_EVENTS: 7356 mForwardTouchEvents = (msg.arg1 != 0); 7357 break; 7358 7359 case PREVENT_TOUCH_ID: 7360 if (inFullScreenMode()) { 7361 break; 7362 } 7363 if (msg.obj == null) { 7364 if (msg.arg1 == MotionEvent.ACTION_DOWN 7365 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7366 // if prevent default is called from WebCore, UI 7367 // will not handle the rest of the touch events any 7368 // more. 7369 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7370 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7371 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 7372 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7373 // the return for the first ACTION_MOVE will decide 7374 // whether UI will handle touch or not. Currently no 7375 // support for alternating prevent default 7376 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7377 : PREVENT_DEFAULT_NO; 7378 } 7379 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7380 mTouchHighlightRegion.setEmpty(); 7381 } 7382 } else { 7383 TouchEventData ted = (TouchEventData) msg.obj; 7384 7385 if (ted.mPoints.length > 1) { // multi-touch 7386 if (ted.mAction == MotionEvent.ACTION_POINTER_UP) { 7387 mIsHandlingMultiTouch = false; 7388 } 7389 if (msg.arg2 == 0) { 7390 mPreventDefault = PREVENT_DEFAULT_NO; 7391 handleMultiTouchInWebView(ted.mMotionEvent); 7392 } else { 7393 mPreventDefault = PREVENT_DEFAULT_YES; 7394 } 7395 break; 7396 } 7397 7398 // prevent default is not called in WebCore, so the 7399 // message needs to be reprocessed in UI 7400 if (msg.arg2 == 0) { 7401 // Following is for single touch. 7402 switch (ted.mAction) { 7403 case MotionEvent.ACTION_DOWN: 7404 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 7405 - mScrollX; 7406 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 7407 - mScrollY; 7408 mDeferTouchMode = TOUCH_INIT_MODE; 7409 break; 7410 case MotionEvent.ACTION_MOVE: { 7411 // no snapping in defer process 7412 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 7413 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 7414 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7415 mDeferTouchMode = TOUCH_DRAG_MODE; 7416 mLastDeferTouchX = x; 7417 mLastDeferTouchY = y; 7418 startScrollingLayer(x, y); 7419 startDrag(); 7420 } 7421 int deltaX = pinLocX((int) (mScrollX 7422 + mLastDeferTouchX - x)) 7423 - mScrollX; 7424 int deltaY = pinLocY((int) (mScrollY 7425 + mLastDeferTouchY - y)) 7426 - mScrollY; 7427 doDrag(deltaX, deltaY); 7428 if (deltaX != 0) mLastDeferTouchX = x; 7429 if (deltaY != 0) mLastDeferTouchY = y; 7430 break; 7431 } 7432 case MotionEvent.ACTION_UP: 7433 case MotionEvent.ACTION_CANCEL: 7434 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7435 // no fling in defer process 7436 mScroller.springBack(mScrollX, mScrollY, 0, 7437 computeMaxScrollX(), 0, 7438 computeMaxScrollY()); 7439 invalidate(); 7440 WebViewCore.resumePriority(); 7441 WebViewCore.resumeUpdatePicture(mWebViewCore); 7442 } 7443 mDeferTouchMode = TOUCH_DONE_MODE; 7444 break; 7445 case WebViewCore.ACTION_DOUBLETAP: 7446 // doDoubleTap() needs mLastTouchX/Y as anchor 7447 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 7448 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 7449 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7450 mDeferTouchMode = TOUCH_DONE_MODE; 7451 break; 7452 case WebViewCore.ACTION_LONGPRESS: 7453 HitTestResult hitTest = getHitTestResult(); 7454 if (hitTest != null && hitTest.mType 7455 != HitTestResult.UNKNOWN_TYPE) { 7456 performLongClick(); 7457 } 7458 mDeferTouchMode = TOUCH_DONE_MODE; 7459 break; 7460 } 7461 } 7462 } 7463 break; 7464 7465 case REQUEST_KEYBOARD: 7466 if (msg.arg1 == 0) { 7467 hideSoftKeyboard(); 7468 } else { 7469 displaySoftKeyboard(false); 7470 } 7471 break; 7472 7473 case FIND_AGAIN: 7474 // Ignore if find has been dismissed. 7475 if (mFindIsUp && mFindCallback != null) { 7476 mFindCallback.findAll(); 7477 } 7478 break; 7479 7480 case DRAG_HELD_MOTIONLESS: 7481 mHeldMotionless = MOTIONLESS_TRUE; 7482 invalidate(); 7483 // fall through to keep scrollbars awake 7484 7485 case AWAKEN_SCROLL_BARS: 7486 if (mTouchMode == TOUCH_DRAG_MODE 7487 && mHeldMotionless == MOTIONLESS_TRUE) { 7488 awakenScrollBars(ViewConfiguration 7489 .getScrollDefaultDelay(), false); 7490 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7491 .obtainMessage(AWAKEN_SCROLL_BARS), 7492 ViewConfiguration.getScrollDefaultDelay()); 7493 } 7494 break; 7495 7496 case DO_MOTION_UP: 7497 doMotionUp(msg.arg1, msg.arg2); 7498 break; 7499 7500 case SCREEN_ON: 7501 setKeepScreenOn(msg.arg1 == 1); 7502 break; 7503 7504 case SHOW_FULLSCREEN: { 7505 View view = (View) msg.obj; 7506 int npp = msg.arg1; 7507 7508 if (inFullScreenMode()) { 7509 Log.w(LOGTAG, "Should not have another full screen."); 7510 dismissFullScreenMode(); 7511 } 7512 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7513 mFullScreenHolder.setContentView(view); 7514 mFullScreenHolder.setCancelable(false); 7515 mFullScreenHolder.setCanceledOnTouchOutside(false); 7516 mFullScreenHolder.show(); 7517 7518 break; 7519 } 7520 case HIDE_FULLSCREEN: 7521 dismissFullScreenMode(); 7522 break; 7523 7524 case DOM_FOCUS_CHANGED: 7525 if (inEditingMode()) { 7526 nativeClearCursor(); 7527 rebuildWebTextView(); 7528 } 7529 break; 7530 7531 case SHOW_RECT_MSG_ID: { 7532 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7533 int x = mScrollX; 7534 int left = contentToViewX(data.mLeft); 7535 int width = contentToViewDimension(data.mWidth); 7536 int maxWidth = contentToViewDimension(data.mContentWidth); 7537 int viewWidth = getViewWidth(); 7538 if (width < viewWidth) { 7539 // center align 7540 x += left + width / 2 - mScrollX - viewWidth / 2; 7541 } else { 7542 x += (int) (left + data.mXPercentInDoc * width 7543 - mScrollX - data.mXPercentInView * viewWidth); 7544 } 7545 if (DebugFlags.WEB_VIEW) { 7546 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7547 width + ",maxWidth=" + maxWidth + 7548 ",viewWidth=" + viewWidth + ",x=" 7549 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7550 ",xPercentInView=" + data.mXPercentInView+ ")"); 7551 } 7552 // use the passing content width to cap x as the current 7553 // mContentWidth may not be updated yet 7554 x = Math.max(0, 7555 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7556 int top = contentToViewY(data.mTop); 7557 int height = contentToViewDimension(data.mHeight); 7558 int maxHeight = contentToViewDimension(data.mContentHeight); 7559 int viewHeight = getViewHeight(); 7560 int y = (int) (top + data.mYPercentInDoc * height - 7561 data.mYPercentInView * viewHeight); 7562 if (DebugFlags.WEB_VIEW) { 7563 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7564 height + ",maxHeight=" + maxHeight + 7565 ",viewHeight=" + viewHeight + ",y=" 7566 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7567 ",yPercentInView=" + data.mYPercentInView+ ")"); 7568 } 7569 // use the passing content height to cap y as the current 7570 // mContentHeight may not be updated yet 7571 y = Math.max(0, 7572 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7573 // We need to take into account the visible title height 7574 // when scrolling since y is an absolute view position. 7575 y = Math.max(0, y - getVisibleTitleHeight()); 7576 scrollTo(x, y); 7577 } 7578 break; 7579 7580 case CENTER_FIT_RECT: 7581 centerFitRect((Rect)msg.obj); 7582 break; 7583 7584 case SET_SCROLLBAR_MODES: 7585 mHorizontalScrollBarMode = msg.arg1; 7586 mVerticalScrollBarMode = msg.arg2; 7587 break; 7588 7589 case SELECTION_STRING_CHANGED: 7590 if (mAccessibilityInjector != null) { 7591 String selectionString = (String) msg.obj; 7592 mAccessibilityInjector.onSelectionStringChange(selectionString); 7593 } 7594 break; 7595 7596 case SET_TOUCH_HIGHLIGHT_RECTS: 7597 invalidate(mTouchHighlightRegion.getBounds()); 7598 mTouchHighlightRegion.setEmpty(); 7599 if (msg.obj != null) { 7600 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 7601 for (Rect rect : rects) { 7602 Rect viewRect = contentToViewRect(rect); 7603 // some sites, like stories in nytimes.com, set 7604 // mouse event handler in the top div. It is not 7605 // user friendly to highlight the div if it covers 7606 // more than half of the screen. 7607 if (viewRect.width() < getWidth() >> 1 7608 || viewRect.height() < getHeight() >> 1) { 7609 mTouchHighlightRegion.union(viewRect); 7610 invalidate(viewRect); 7611 } else { 7612 Log.w(LOGTAG, "Skip the huge selection rect:" 7613 + viewRect); 7614 } 7615 } 7616 } 7617 break; 7618 7619 case SAVE_WEBARCHIVE_FINISHED: 7620 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7621 if (saveMessage.mCallback != null) { 7622 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7623 } 7624 break; 7625 7626 case SET_AUTOFILLABLE: 7627 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 7628 if (mWebTextView != null) { 7629 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 7630 rebuildWebTextView(); 7631 } 7632 break; 7633 7634 case AUTOFILL_COMPLETE: 7635 if (mWebTextView != null) { 7636 // Clear the WebTextView adapter when AutoFill finishes 7637 // so that the drop down gets cleared. 7638 mWebTextView.setAdapterCustom(null); 7639 } 7640 break; 7641 7642 case SELECT_AT: 7643 nativeSelectAt(msg.arg1, msg.arg2); 7644 break; 7645 7646 default: 7647 super.handleMessage(msg); 7648 break; 7649 } 7650 } 7651 } 7652 7653 /** 7654 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7655 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7656 */ 7657 private void updateTextSelectionFromMessage(int nodePointer, 7658 int textGeneration, WebViewCore.TextSelectionData data) { 7659 if (inEditingMode() 7660 && mWebTextView.isSameTextField(nodePointer) 7661 && textGeneration == mTextGeneration) { 7662 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7663 } 7664 } 7665 7666 // Class used to use a dropdown for a <select> element 7667 private class InvokeListBox implements Runnable { 7668 // Whether the listbox allows multiple selection. 7669 private boolean mMultiple; 7670 // Passed in to a list with multiple selection to tell 7671 // which items are selected. 7672 private int[] mSelectedArray; 7673 // Passed in to a list with single selection to tell 7674 // where the initial selection is. 7675 private int mSelection; 7676 7677 private Container[] mContainers; 7678 7679 // Need these to provide stable ids to my ArrayAdapter, 7680 // which normally does not have stable ids. (Bug 1250098) 7681 private class Container extends Object { 7682 /** 7683 * Possible values for mEnabled. Keep in sync with OptionStatus in 7684 * WebViewCore.cpp 7685 */ 7686 final static int OPTGROUP = -1; 7687 final static int OPTION_DISABLED = 0; 7688 final static int OPTION_ENABLED = 1; 7689 7690 String mString; 7691 int mEnabled; 7692 int mId; 7693 7694 public String toString() { 7695 return mString; 7696 } 7697 } 7698 7699 /** 7700 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7701 * and allow filtering. 7702 */ 7703 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7704 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7705 super(context, 7706 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7707 com.android.internal.R.layout.select_dialog_singlechoice, 7708 objects); 7709 } 7710 7711 @Override 7712 public View getView(int position, View convertView, 7713 ViewGroup parent) { 7714 // Always pass in null so that we will get a new CheckedTextView 7715 // Otherwise, an item which was previously used as an <optgroup> 7716 // element (i.e. has no check), could get used as an <option> 7717 // element, which needs a checkbox/radio, but it would not have 7718 // one. 7719 convertView = super.getView(position, null, parent); 7720 Container c = item(position); 7721 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7722 // ListView does not draw dividers between disabled and 7723 // enabled elements. Use a LinearLayout to provide dividers 7724 LinearLayout layout = new LinearLayout(mContext); 7725 layout.setOrientation(LinearLayout.VERTICAL); 7726 if (position > 0) { 7727 View dividerTop = new View(mContext); 7728 dividerTop.setBackgroundResource( 7729 android.R.drawable.divider_horizontal_bright); 7730 layout.addView(dividerTop); 7731 } 7732 7733 if (Container.OPTGROUP == c.mEnabled) { 7734 // Currently select_dialog_multichoice and 7735 // select_dialog_singlechoice are CheckedTextViews. If 7736 // that changes, the class cast will no longer be valid. 7737 Assert.assertTrue( 7738 convertView instanceof CheckedTextView); 7739 ((CheckedTextView) convertView).setCheckMarkDrawable( 7740 null); 7741 } else { 7742 // c.mEnabled == Container.OPTION_DISABLED 7743 // Draw the disabled element in a disabled state. 7744 convertView.setEnabled(false); 7745 } 7746 7747 layout.addView(convertView); 7748 if (position < getCount() - 1) { 7749 View dividerBottom = new View(mContext); 7750 dividerBottom.setBackgroundResource( 7751 android.R.drawable.divider_horizontal_bright); 7752 layout.addView(dividerBottom); 7753 } 7754 return layout; 7755 } 7756 return convertView; 7757 } 7758 7759 @Override 7760 public boolean hasStableIds() { 7761 // AdapterView's onChanged method uses this to determine whether 7762 // to restore the old state. Return false so that the old (out 7763 // of date) state does not replace the new, valid state. 7764 return false; 7765 } 7766 7767 private Container item(int position) { 7768 if (position < 0 || position >= getCount()) { 7769 return null; 7770 } 7771 return (Container) getItem(position); 7772 } 7773 7774 @Override 7775 public long getItemId(int position) { 7776 Container item = item(position); 7777 if (item == null) { 7778 return -1; 7779 } 7780 return item.mId; 7781 } 7782 7783 @Override 7784 public boolean areAllItemsEnabled() { 7785 return false; 7786 } 7787 7788 @Override 7789 public boolean isEnabled(int position) { 7790 Container item = item(position); 7791 if (item == null) { 7792 return false; 7793 } 7794 return Container.OPTION_ENABLED == item.mEnabled; 7795 } 7796 } 7797 7798 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7799 mMultiple = true; 7800 mSelectedArray = selected; 7801 7802 int length = array.length; 7803 mContainers = new Container[length]; 7804 for (int i = 0; i < length; i++) { 7805 mContainers[i] = new Container(); 7806 mContainers[i].mString = array[i]; 7807 mContainers[i].mEnabled = enabled[i]; 7808 mContainers[i].mId = i; 7809 } 7810 } 7811 7812 private InvokeListBox(String[] array, int[] enabled, int selection) { 7813 mSelection = selection; 7814 mMultiple = false; 7815 7816 int length = array.length; 7817 mContainers = new Container[length]; 7818 for (int i = 0; i < length; i++) { 7819 mContainers[i] = new Container(); 7820 mContainers[i].mString = array[i]; 7821 mContainers[i].mEnabled = enabled[i]; 7822 mContainers[i].mId = i; 7823 } 7824 } 7825 7826 /* 7827 * Whenever the data set changes due to filtering, this class ensures 7828 * that the checked item remains checked. 7829 */ 7830 private class SingleDataSetObserver extends DataSetObserver { 7831 private long mCheckedId; 7832 private ListView mListView; 7833 private Adapter mAdapter; 7834 7835 /* 7836 * Create a new observer. 7837 * @param id The ID of the item to keep checked. 7838 * @param l ListView for getting and clearing the checked states 7839 * @param a Adapter for getting the IDs 7840 */ 7841 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7842 mCheckedId = id; 7843 mListView = l; 7844 mAdapter = a; 7845 } 7846 7847 public void onChanged() { 7848 // The filter may have changed which item is checked. Find the 7849 // item that the ListView thinks is checked. 7850 int position = mListView.getCheckedItemPosition(); 7851 long id = mAdapter.getItemId(position); 7852 if (mCheckedId != id) { 7853 // Clear the ListView's idea of the checked item, since 7854 // it is incorrect 7855 mListView.clearChoices(); 7856 // Search for mCheckedId. If it is in the filtered list, 7857 // mark it as checked 7858 int count = mAdapter.getCount(); 7859 for (int i = 0; i < count; i++) { 7860 if (mAdapter.getItemId(i) == mCheckedId) { 7861 mListView.setItemChecked(i, true); 7862 break; 7863 } 7864 } 7865 } 7866 } 7867 7868 public void onInvalidate() {} 7869 } 7870 7871 public void run() { 7872 final ListView listView = (ListView) LayoutInflater.from(mContext) 7873 .inflate(com.android.internal.R.layout.select_dialog, null); 7874 final MyArrayListAdapter adapter = new 7875 MyArrayListAdapter(mContext, mContainers, mMultiple); 7876 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7877 .setView(listView).setCancelable(true) 7878 .setInverseBackgroundForced(true); 7879 7880 if (mMultiple) { 7881 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7882 public void onClick(DialogInterface dialog, int which) { 7883 mWebViewCore.sendMessage( 7884 EventHub.LISTBOX_CHOICES, 7885 adapter.getCount(), 0, 7886 listView.getCheckedItemPositions()); 7887 }}); 7888 b.setNegativeButton(android.R.string.cancel, 7889 new DialogInterface.OnClickListener() { 7890 public void onClick(DialogInterface dialog, int which) { 7891 mWebViewCore.sendMessage( 7892 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7893 }}); 7894 } 7895 mListBoxDialog = b.create(); 7896 listView.setAdapter(adapter); 7897 listView.setFocusableInTouchMode(true); 7898 // There is a bug (1250103) where the checks in a ListView with 7899 // multiple items selected are associated with the positions, not 7900 // the ids, so the items do not properly retain their checks when 7901 // filtered. Do not allow filtering on multiple lists until 7902 // that bug is fixed. 7903 7904 listView.setTextFilterEnabled(!mMultiple); 7905 if (mMultiple) { 7906 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7907 int length = mSelectedArray.length; 7908 for (int i = 0; i < length; i++) { 7909 listView.setItemChecked(mSelectedArray[i], true); 7910 } 7911 } else { 7912 listView.setOnItemClickListener(new OnItemClickListener() { 7913 public void onItemClick(AdapterView parent, View v, 7914 int position, long id) { 7915 // Rather than sending the message right away, send it 7916 // after the page regains focus. 7917 mListBoxMessage = Message.obtain(null, 7918 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 7919 mListBoxDialog.dismiss(); 7920 mListBoxDialog = null; 7921 } 7922 }); 7923 if (mSelection != -1) { 7924 listView.setSelection(mSelection); 7925 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7926 listView.setItemChecked(mSelection, true); 7927 DataSetObserver observer = new SingleDataSetObserver( 7928 adapter.getItemId(mSelection), listView, adapter); 7929 adapter.registerDataSetObserver(observer); 7930 } 7931 } 7932 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7933 public void onCancel(DialogInterface dialog) { 7934 mWebViewCore.sendMessage( 7935 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7936 mListBoxDialog = null; 7937 } 7938 }); 7939 mListBoxDialog.show(); 7940 } 7941 } 7942 7943 private Message mListBoxMessage; 7944 7945 /* 7946 * Request a dropdown menu for a listbox with multiple selection. 7947 * 7948 * @param array Labels for the listbox. 7949 * @param enabledArray State for each element in the list. See static 7950 * integers in Container class. 7951 * @param selectedArray Which positions are initally selected. 7952 */ 7953 void requestListBox(String[] array, int[] enabledArray, int[] 7954 selectedArray) { 7955 mPrivateHandler.post( 7956 new InvokeListBox(array, enabledArray, selectedArray)); 7957 } 7958 7959 /* 7960 * Request a dropdown menu for a listbox with single selection or a single 7961 * <select> element. 7962 * 7963 * @param array Labels for the listbox. 7964 * @param enabledArray State for each element in the list. See static 7965 * integers in Container class. 7966 * @param selection Which position is initally selected. 7967 */ 7968 void requestListBox(String[] array, int[] enabledArray, int selection) { 7969 mPrivateHandler.post( 7970 new InvokeListBox(array, enabledArray, selection)); 7971 } 7972 7973 // called by JNI 7974 private void sendMoveFocus(int frame, int node) { 7975 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7976 new WebViewCore.CursorData(frame, node, 0, 0)); 7977 } 7978 7979 // called by JNI 7980 private void sendMoveMouse(int frame, int node, int x, int y) { 7981 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7982 new WebViewCore.CursorData(frame, node, x, y)); 7983 } 7984 7985 /* 7986 * Send a mouse move event to the webcore thread. 7987 * 7988 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7989 * which wants key events, but it is not the focus. This 7990 * will make the visual appear as though nothing is in 7991 * focus. Remove the WebTextView, if present, and stop 7992 * drawing the blinking caret. 7993 * called by JNI 7994 */ 7995 private void sendMoveMouseIfLatest(boolean removeFocus) { 7996 if (removeFocus) { 7997 clearTextEntry(); 7998 } 7999 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 8000 cursorData()); 8001 } 8002 8003 /** 8004 * Called by JNI to send a message to the webcore thread that the user 8005 * touched the webpage. 8006 * @param touchGeneration Generation number of the touch, to ignore touches 8007 * after a new one has been generated. 8008 * @param frame Pointer to the frame holding the node that was touched. 8009 * @param node Pointer to the node touched. 8010 * @param x x-position of the touch. 8011 * @param y y-position of the touch. 8012 */ 8013 private void sendMotionUp(int touchGeneration, 8014 int frame, int node, int x, int y) { 8015 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 8016 touchUpData.mMoveGeneration = touchGeneration; 8017 touchUpData.mFrame = frame; 8018 touchUpData.mNode = node; 8019 touchUpData.mX = x; 8020 touchUpData.mY = y; 8021 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 8022 } 8023 8024 8025 private int getScaledMaxXScroll() { 8026 int width; 8027 if (mHeightCanMeasure == false) { 8028 width = getViewWidth() / 4; 8029 } else { 8030 Rect visRect = new Rect(); 8031 calcOurVisibleRect(visRect); 8032 width = visRect.width() / 2; 8033 } 8034 // FIXME the divisor should be retrieved from somewhere 8035 return viewToContentX(width); 8036 } 8037 8038 private int getScaledMaxYScroll() { 8039 int height; 8040 if (mHeightCanMeasure == false) { 8041 height = getViewHeight() / 4; 8042 } else { 8043 Rect visRect = new Rect(); 8044 calcOurVisibleRect(visRect); 8045 height = visRect.height() / 2; 8046 } 8047 // FIXME the divisor should be retrieved from somewhere 8048 // the closest thing today is hard-coded into ScrollView.java 8049 // (from ScrollView.java, line 363) int maxJump = height/2; 8050 return Math.round(height * mZoomManager.getInvScale()); 8051 } 8052 8053 /** 8054 * Called by JNI to invalidate view 8055 */ 8056 private void viewInvalidate() { 8057 invalidate(); 8058 } 8059 8060 /** 8061 * Pass the key directly to the page. This assumes that 8062 * nativePageShouldHandleShiftAndArrows() returned true. 8063 */ 8064 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 8065 int keyEventAction; 8066 int eventHubAction; 8067 if (down) { 8068 keyEventAction = KeyEvent.ACTION_DOWN; 8069 eventHubAction = EventHub.KEY_DOWN; 8070 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 8071 } else { 8072 keyEventAction = KeyEvent.ACTION_UP; 8073 eventHubAction = EventHub.KEY_UP; 8074 } 8075 8076 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 8077 1, (metaState & KeyEvent.META_SHIFT_ON) 8078 | (metaState & KeyEvent.META_ALT_ON) 8079 | (metaState & KeyEvent.META_SYM_ON) 8080 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 8081 mWebViewCore.sendMessage(eventHubAction, event); 8082 } 8083 8084 // return true if the key was handled 8085 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 8086 long time) { 8087 if (mNativeClass == 0) { 8088 return false; 8089 } 8090 mInitialHitTestResult = null; 8091 mLastCursorTime = time; 8092 mLastCursorBounds = nativeGetCursorRingBounds(); 8093 boolean keyHandled 8094 = nativeMoveCursor(keyCode, count, noScroll) == false; 8095 if (DebugFlags.WEB_VIEW) { 8096 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 8097 + " mLastCursorTime=" + mLastCursorTime 8098 + " handled=" + keyHandled); 8099 } 8100 if (keyHandled == false) { 8101 return keyHandled; 8102 } 8103 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 8104 if (contentCursorRingBounds.isEmpty()) return keyHandled; 8105 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 8106 // set last touch so that context menu related functions will work 8107 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 8108 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 8109 if (mHeightCanMeasure == false) { 8110 return keyHandled; 8111 } 8112 Rect visRect = new Rect(); 8113 calcOurVisibleRect(visRect); 8114 Rect outset = new Rect(visRect); 8115 int maxXScroll = visRect.width() / 2; 8116 int maxYScroll = visRect.height() / 2; 8117 outset.inset(-maxXScroll, -maxYScroll); 8118 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 8119 return keyHandled; 8120 } 8121 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 8122 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 8123 maxXScroll); 8124 if (maxH > 0) { 8125 pinScrollBy(maxH, 0, true, 0); 8126 } else { 8127 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 8128 -maxXScroll); 8129 if (maxH < 0) { 8130 pinScrollBy(maxH, 0, true, 0); 8131 } 8132 } 8133 if (mLastCursorBounds.isEmpty()) return keyHandled; 8134 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 8135 return keyHandled; 8136 } 8137 if (DebugFlags.WEB_VIEW) { 8138 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 8139 + contentCursorRingBounds); 8140 } 8141 requestRectangleOnScreen(viewCursorRingBounds); 8142 mUserScroll = true; 8143 return keyHandled; 8144 } 8145 8146 /** 8147 * @return Whether accessibility script has been injected. 8148 */ 8149 private boolean accessibilityScriptInjected() { 8150 // TODO: Maybe the injected script should announce its presence in 8151 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 8152 // will check that as one of the conditions it looks for 8153 return mAccessibilityScriptInjected; 8154 } 8155 8156 /** 8157 * Set the background color. It's white by default. Pass 8158 * zero to make the view transparent. 8159 * @param color the ARGB color described by Color.java 8160 */ 8161 public void setBackgroundColor(int color) { 8162 mBackgroundColor = color; 8163 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 8164 } 8165 8166 public void debugDump() { 8167 nativeDebugDump(); 8168 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 8169 } 8170 8171 /** 8172 * Draw the HTML page into the specified canvas. This call ignores any 8173 * view-specific zoom, scroll offset, or other changes. It does not draw 8174 * any view-specific chrome, such as progress or URL bars. 8175 * 8176 * @hide only needs to be accessible to Browser and testing 8177 */ 8178 public void drawPage(Canvas canvas) { 8179 nativeDraw(canvas, 0, 0, false); 8180 } 8181 8182 /** 8183 * Enable expanded tiles bound for smoother scrolling. 8184 * 8185 * @hide only used by the Browser 8186 */ 8187 public void setExpandedTileBounds(boolean enabled) { 8188 nativeSetExpandedTileBounds(enabled); 8189 } 8190 8191 /** 8192 * Set the time to wait between passing touches to WebCore. See also the 8193 * TOUCH_SENT_INTERVAL member for further discussion. 8194 * 8195 * @hide This is only used by the DRT test application. 8196 */ 8197 public void setTouchInterval(int interval) { 8198 mCurrentTouchInterval = interval; 8199 } 8200 8201 /** 8202 * Update our cache with updatedText. 8203 * @param updatedText The new text to put in our cache. 8204 */ 8205 /* package */ void updateCachedTextfield(String updatedText) { 8206 // Also place our generation number so that when we look at the cache 8207 // we recognize that it is up to date. 8208 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 8209 } 8210 8211 /*package*/ void autoFillForm(int autoFillQueryId) { 8212 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 8213 } 8214 8215 /* package */ ViewManager getViewManager() { 8216 return mViewManager; 8217 } 8218 8219 private native int nativeCacheHitFramePointer(); 8220 private native boolean nativeCacheHitIsPlugin(); 8221 private native Rect nativeCacheHitNodeBounds(); 8222 private native int nativeCacheHitNodePointer(); 8223 /* package */ native void nativeClearCursor(); 8224 private native void nativeCreate(int ptr); 8225 private native int nativeCursorFramePointer(); 8226 private native Rect nativeCursorNodeBounds(); 8227 private native int nativeCursorNodePointer(); 8228 private native boolean nativeCursorIntersects(Rect visibleRect); 8229 private native boolean nativeCursorIsAnchor(); 8230 private native boolean nativeCursorIsTextInput(); 8231 private native Point nativeCursorPosition(); 8232 private native String nativeCursorText(); 8233 /** 8234 * Returns true if the native cursor node says it wants to handle key events 8235 * (ala plugins). This can only be called if mNativeClass is non-zero! 8236 */ 8237 private native boolean nativeCursorWantsKeyEvents(); 8238 private native void nativeDebugDump(); 8239 private native void nativeDestroy(); 8240 8241 /** 8242 * Draw the picture set with a background color and extra. If 8243 * "splitIfNeeded" is true and the return value is not 0, the return value 8244 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 8245 * native allocation can be freed. 8246 */ 8247 private native int nativeDraw(Canvas canvas, int color, int extra, 8248 boolean splitIfNeeded); 8249 private native void nativeDumpDisplayTree(String urlOrNull); 8250 private native boolean nativeEvaluateLayersAnimations(); 8251 private native int nativeGetDrawGLFunction(Rect rect, float scale, int extras); 8252 private native void nativeUpdateDrawGLFunction(Rect rect); 8253 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 8254 private native void nativeExtendSelection(int x, int y); 8255 private native int nativeFindAll(String findLower, String findUpper, 8256 boolean sameAsLastSearch); 8257 private native void nativeFindNext(boolean forward); 8258 /* package */ native int nativeFocusCandidateFramePointer(); 8259 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 8260 /* package */ native boolean nativeFocusCandidateIsPassword(); 8261 private native boolean nativeFocusCandidateIsRtlText(); 8262 private native boolean nativeFocusCandidateIsTextInput(); 8263 /* package */ native int nativeFocusCandidateMaxLength(); 8264 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 8265 /* package */ native String nativeFocusCandidateName(); 8266 private native Rect nativeFocusCandidateNodeBounds(); 8267 /** 8268 * @return A Rect with left, top, right, bottom set to the corresponding 8269 * padding values in the focus candidate, if it is a textfield/textarea with 8270 * a style. Otherwise return null. This is not actually a rectangle; Rect 8271 * is being used to pass four integers. 8272 */ 8273 private native Rect nativeFocusCandidatePaddingRect(); 8274 /* package */ native int nativeFocusCandidatePointer(); 8275 private native String nativeFocusCandidateText(); 8276 /* package */ native float nativeFocusCandidateTextSize(); 8277 /* package */ native int nativeFocusCandidateLineHeight(); 8278 /** 8279 * Returns an integer corresponding to WebView.cpp::type. 8280 * See WebTextView.setType() 8281 */ 8282 private native int nativeFocusCandidateType(); 8283 private native boolean nativeFocusIsPlugin(); 8284 private native Rect nativeFocusNodeBounds(); 8285 /* package */ native int nativeFocusNodePointer(); 8286 private native Rect nativeGetCursorRingBounds(); 8287 private native String nativeGetSelection(); 8288 private native boolean nativeHasCursorNode(); 8289 private native boolean nativeHasFocusNode(); 8290 private native void nativeHideCursor(); 8291 private native boolean nativeHitSelection(int x, int y); 8292 private native String nativeImageURI(int x, int y); 8293 private native void nativeInstrumentReport(); 8294 private native Rect nativeLayerBounds(int layer); 8295 /* package */ native boolean nativeMoveCursorToNextTextInput(); 8296 // return true if the page has been scrolled 8297 private native boolean nativeMotionUp(int x, int y, int slop); 8298 // returns false if it handled the key 8299 private native boolean nativeMoveCursor(int keyCode, int count, 8300 boolean noScroll); 8301 private native int nativeMoveGeneration(); 8302 private native void nativeMoveSelection(int x, int y); 8303 /** 8304 * @return true if the page should get the shift and arrow keys, rather 8305 * than select text/navigation. 8306 * 8307 * If the focus is a plugin, or if the focus and cursor match and are 8308 * a contentEditable element, then the page should handle these keys. 8309 */ 8310 private native boolean nativePageShouldHandleShiftAndArrows(); 8311 private native boolean nativePointInNavCache(int x, int y, int slop); 8312 // Like many other of our native methods, you must make sure that 8313 // mNativeClass is not null before calling this method. 8314 private native void nativeRecordButtons(boolean focused, 8315 boolean pressed, boolean invalidate); 8316 private native void nativeResetSelection(); 8317 private native Point nativeSelectableText(); 8318 private native void nativeSelectAll(); 8319 private native void nativeSelectBestAt(Rect rect); 8320 private native void nativeSelectAt(int x, int y); 8321 private native int nativeSelectionX(); 8322 private native int nativeSelectionY(); 8323 private native int nativeFindIndex(); 8324 private native void nativeSetExtendSelection(); 8325 private native void nativeSetFindIsEmpty(); 8326 private native void nativeSetFindIsUp(boolean isUp); 8327 private native void nativeSetHeightCanMeasure(boolean measure); 8328 private native void nativeSetBaseLayer(int layer, Rect invalRect); 8329 private native void nativeShowCursorTimed(); 8330 private native void nativeReplaceBaseContent(int content); 8331 private native void nativeCopyBaseContentToPicture(Picture pict); 8332 private native boolean nativeHasContent(); 8333 private native void nativeSetSelectionPointer(boolean set, 8334 float scale, int x, int y); 8335 private native boolean nativeStartSelection(int x, int y); 8336 private native Rect nativeSubtractLayers(Rect content); 8337 private native int nativeTextGeneration(); 8338 // Never call this version except by updateCachedTextfield(String) - 8339 // we always want to pass in our generation number. 8340 private native void nativeUpdateCachedTextfield(String updatedText, 8341 int generation); 8342 private native boolean nativeWordSelection(int x, int y); 8343 // return NO_LEFTEDGE means failure. 8344 static final int NO_LEFTEDGE = -1; 8345 native int nativeGetBlockLeftEdge(int x, int y, float scale); 8346 8347 private native void nativeSetExpandedTileBounds(boolean enabled); 8348 8349 // Returns a pointer to the scrollable LayerAndroid at the given point. 8350 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 8351 Rect scrollBounds); 8352 /** 8353 * Scroll the specified layer. 8354 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 8355 * @param newX Destination x position to which to scroll. 8356 * @param newY Destination y position to which to scroll. 8357 * @return True if the layer is successfully scrolled. 8358 */ 8359 private native boolean nativeScrollLayer(int layer, int newX, int newY); 8360} 8361