WebView.java revision b611213ea1a590ba2fa70c3abb933f919b84d527
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.Vector; 108import java.util.regex.Matcher; 109import java.util.regex.Pattern; 110 111import junit.framework.Assert; 112 113/** 114 * <p>A View that displays web pages. This class is the basis upon which you 115 * can roll your own web browser or simply display some online content within your Activity. 116 * It uses the WebKit rendering engine to display 117 * web pages and includes methods to navigate forward and backward 118 * through a history, zoom in and out, perform text searches and more.</p> 119 * <p>To enable the built-in zoom, set 120 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 121 * (introduced in API version 3). 122 * <p>Note that, in order for your Activity to access the Internet and load web pages 123 * in a WebView, you must add the {@code INTERNET} permissions to your 124 * Android Manifest file:</p> 125 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 126 * 127 * <p>This must be a child of the <a 128 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 129 * element.</p> 130 * 131 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 132 * tutorial</a>.</p> 133 * 134 * <h3>Basic usage</h3> 135 * 136 * <p>By default, a WebView provides no browser-like widgets, does not 137 * enable JavaScript and web page errors are ignored. If your goal is only 138 * to display some HTML as a part of your UI, this is probably fine; 139 * the user won't need to interact with the web page beyond reading 140 * it, and the web page won't need to interact with the user. If you 141 * actually want a full-blown web browser, then you probably want to 142 * invoke the Browser application with a URL Intent rather than show it 143 * with a WebView. For example: 144 * <pre> 145 * Uri uri = Uri.parse("http://www.example.com"); 146 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 147 * startActivity(intent); 148 * </pre> 149 * <p>See {@link android.content.Intent} for more information.</p> 150 * 151 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 152 * or set the entire Activity window as a WebView during {@link 153 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 154 * <pre class="prettyprint"> 155 * WebView webview = new WebView(this); 156 * setContentView(webview); 157 * </pre> 158 * 159 * <p>Then load the desired web page:</p> 160 * <pre> 161 * // Simplest usage: note that an exception will NOT be thrown 162 * // if there is an error loading this page (see below). 163 * webview.loadUrl("http://slashdot.org/"); 164 * 165 * // OR, you can also load from an HTML string: 166 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 167 * webview.loadData(summary, "text/html", "utf-8"); 168 * // ... although note that there are restrictions on what this HTML can do. 169 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 170 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 171 * </pre> 172 * 173 * <p>A WebView has several customization points where you can add your 174 * own behavior. These are:</p> 175 * 176 * <ul> 177 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 178 * This class is called when something that might impact a 179 * browser UI happens, for instance, progress updates and 180 * JavaScript alerts are sent here (see <a 181 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 182 * </li> 183 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 184 * It will be called when things happen that impact the 185 * rendering of the content, eg, errors or form submissions. You 186 * can also intercept URL loading here (via {@link 187 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 188 * shouldOverrideUrlLoading()}).</li> 189 * <li>Modifying the {@link android.webkit.WebSettings}, such as 190 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 191 * setJavaScriptEnabled()}. </li> 192 * <li>Adding JavaScript-to-Java interfaces with the {@link 193 * android.webkit.WebView#addJavascriptInterface} method. 194 * This lets you bind Java objects into the WebView so they can be 195 * controlled from the web pages JavaScript.</li> 196 * </ul> 197 * 198 * <p>Here's a more complicated example, showing error handling, 199 * settings, and progress notification:</p> 200 * 201 * <pre class="prettyprint"> 202 * // Let's display the progress in the activity title bar, like the 203 * // browser app does. 204 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 205 * 206 * webview.getSettings().setJavaScriptEnabled(true); 207 * 208 * final Activity activity = this; 209 * webview.setWebChromeClient(new WebChromeClient() { 210 * public void onProgressChanged(WebView view, int progress) { 211 * // Activities and WebViews measure progress with different scales. 212 * // The progress meter will automatically disappear when we reach 100% 213 * activity.setProgress(progress * 1000); 214 * } 215 * }); 216 * webview.setWebViewClient(new WebViewClient() { 217 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 218 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 219 * } 220 * }); 221 * 222 * webview.loadUrl("http://slashdot.org/"); 223 * </pre> 224 * 225 * <h3>Cookie and window management</h3> 226 * 227 * <p>For obvious security reasons, your application has its own 228 * cache, cookie store etc.—it does not share the Browser 229 * application's data. Cookies are managed on a separate thread, so 230 * operations like index building don't block the UI 231 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 232 * if you want to use cookies in your application. 233 * </p> 234 * 235 * <p>By default, requests by the HTML to open new windows are 236 * ignored. This is true whether they be opened by JavaScript or by 237 * the target attribute on a link. You can customize your 238 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 239 * and render them in whatever manner you want.</p> 240 * 241 * <p>The standard behavior for an Activity is to be destroyed and 242 * recreated when the device orientation or any other configuration changes. This will cause 243 * the WebView to reload the current page. If you don't want that, you 244 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 245 * changes, and then just leave the WebView alone. It'll automatically 246 * re-orient itself as appropriate. Read <a 247 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 248 * more information about how to handle configuration changes during runtime.</p> 249 * 250 * 251 * <h3>Building web pages to support different screen densities</h3> 252 * 253 * <p>The screen density of a device is based on the screen resolution. A screen with low density 254 * has fewer available pixels per inch, where a screen with high density 255 * has more — sometimes significantly more — pixels per inch. The density of a 256 * screen is important because, other things being equal, a UI element (such as a button) whose 257 * height and width are defined in terms of screen pixels will appear larger on the lower density 258 * screen and smaller on the higher density screen. 259 * For simplicity, Android collapses all actual screen densities into three generalized densities: 260 * high, medium, and low.</p> 261 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 262 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 263 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 264 * are bigger). 265 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 266 * you (as a web developer) target screens with different screen densities.</p> 267 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 268 * <ul> 269 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 270 * default scaling factor used for the current device. For example, if the value of {@code 271 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 272 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 273 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 274 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 275 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 276 * (discussed below), then you can stop this default scaling behavior.</li> 277 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 278 * densities for which this style sheet is to be used. The corresponding value should be either 279 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 280 * density, or high density screens, respectively. For example: 281 * <pre> 282 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 283 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 284 * which is the high density pixel ratio.</p> 285 * </li> 286 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 287 * this to specify the target density for which the web page is designed, using the following 288 * values: 289 * <ul> 290 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 291 * occurs.</li> 292 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 293 * as appropriate.</li> 294 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 295 * low density screens scale down. This is also the default behavior.</li> 296 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 297 * as appropriate.</li> 298 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 299 * values are 70-400).</li> 300 * </ul> 301 * <p>Here's an example meta tag to specify the target density:</p> 302 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 303 * </ul> 304 * <p>If you want to modify your web page for different densities, by using the {@code 305 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 306 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 307 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 308 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 309 * 310 * 311 */ 312@Widget 313public class WebView extends AbsoluteLayout 314 implements ViewTreeObserver.OnGlobalFocusChangeListener, 315 ViewGroup.OnHierarchyChangeListener { 316 317 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 318 public void onGlobalLayout() { 319 if (isShown()) { 320 setGLRectViewport(); 321 } 322 } 323 } 324 325 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 326 public void onScrollChanged() { 327 if (isShown()) { 328 setGLRectViewport(); 329 } 330 } 331 } 332 333 // The listener to capture global layout change event. 334 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 335 336 // The listener to capture scroll event. 337 private InnerScrollChangedListener mScrollChangedListener = null; 338 339 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 340 // the screen all-the-time. Good for profiling our drawing code 341 static private final boolean AUTO_REDRAW_HACK = false; 342 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 343 private boolean mAutoRedraw; 344 345 // Reference to the AlertDialog displayed by InvokeListBox. 346 // It's used to dismiss the dialog in destroy if not done before. 347 private AlertDialog mListBoxDialog = null; 348 349 static final String LOGTAG = "webview"; 350 351 private ZoomManager mZoomManager; 352 353 private Rect mGLRectViewport = new Rect(); 354 private boolean mGLViewportEmpty = false; 355 356 /** 357 * Transportation object for returning WebView across thread boundaries. 358 */ 359 public class WebViewTransport { 360 private WebView mWebview; 361 362 /** 363 * Set the WebView to the transportation object. 364 * @param webview The WebView to transport. 365 */ 366 public synchronized void setWebView(WebView webview) { 367 mWebview = webview; 368 } 369 370 /** 371 * Return the WebView object. 372 * @return WebView The transported WebView object. 373 */ 374 public synchronized WebView getWebView() { 375 return mWebview; 376 } 377 } 378 379 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 380 private final CallbackProxy mCallbackProxy; 381 382 private final WebViewDatabase mDatabase; 383 384 // SSL certificate for the main top-level page (if secure) 385 private SslCertificate mCertificate; 386 387 // Native WebView pointer that is 0 until the native object has been 388 // created. 389 private int mNativeClass; 390 // This would be final but it needs to be set to null when the WebView is 391 // destroyed. 392 private WebViewCore mWebViewCore; 393 // Handler for dispatching UI messages. 394 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 395 private WebTextView mWebTextView; 396 // Used to ignore changes to webkit text that arrives to the UI side after 397 // more key events. 398 private int mTextGeneration; 399 400 /* package */ void incrementTextGeneration() { mTextGeneration++; } 401 402 // Used by WebViewCore to create child views. 403 /* package */ final ViewManager mViewManager; 404 405 // Used to display in full screen mode 406 PluginFullScreenHolder mFullScreenHolder; 407 408 /** 409 * Position of the last touch event in pixels. 410 * Use integer to prevent loss of dragging delta calculation accuracy; 411 * which was done in float and converted to integer, and resulted in gradual 412 * and compounding touch position and view dragging mismatch. 413 */ 414 private int mLastTouchX; 415 private int mLastTouchY; 416 417 /** 418 * Time of the last touch event. 419 */ 420 private long mLastTouchTime; 421 422 /** 423 * Time of the last time sending touch event to WebViewCore 424 */ 425 private long mLastSentTouchTime; 426 427 /** 428 * The minimum elapsed time before sending another ACTION_MOVE event to 429 * WebViewCore. This really should be tuned for each type of the devices. 430 * For example in Google Map api test case, it takes Dream device at least 431 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 432 * triggering the layout and drawing the picture. While the same process 433 * takes 60+ms on the current high speed device. If we make 434 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 435 * to WebViewCore queue and the real layout and draw events will be pushed 436 * to further, which slows down the refresh rate. Choose 50 to favor the 437 * current high speed devices. For Dream like devices, 100 is a better 438 * choice. Maybe make this in the buildspec later. 439 * (Update 12/14/2010: changed to 0 since current device should be able to 440 * handle the raw events and Map team voted to have the raw events too. 441 */ 442 private static final int TOUCH_SENT_INTERVAL = 0; 443 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 444 445 /** 446 * Helper class to get velocity for fling 447 */ 448 VelocityTracker mVelocityTracker; 449 private int mMaximumFling; 450 private float mLastVelocity; 451 private float mLastVelX; 452 private float mLastVelY; 453 454 // The id of the native layer being scrolled. 455 private int mScrollingLayer; 456 private Rect mScrollingLayerRect = new Rect(); 457 458 // only trigger accelerated fling if the new velocity is at least 459 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 460 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 461 462 /** 463 * Touch mode 464 */ 465 private int mTouchMode = TOUCH_DONE_MODE; 466 private static final int TOUCH_INIT_MODE = 1; 467 private static final int TOUCH_DRAG_START_MODE = 2; 468 private static final int TOUCH_DRAG_MODE = 3; 469 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 470 private static final int TOUCH_SHORTPRESS_MODE = 5; 471 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 472 private static final int TOUCH_DONE_MODE = 7; 473 private static final int TOUCH_PINCH_DRAG = 8; 474 private static final int TOUCH_DRAG_LAYER_MODE = 9; 475 476 // Whether to forward the touch events to WebCore 477 // Can only be set by WebKit via JNI. 478 private boolean mForwardTouchEvents = false; 479 480 // Whether to prevent default during touch. The initial value depends on 481 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 482 // for touch down. Otherwise UI will wait for the answer of the first 483 // confirmed move before taking over the control. 484 private static final int PREVENT_DEFAULT_NO = 0; 485 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 486 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 487 private static final int PREVENT_DEFAULT_YES = 3; 488 private static final int PREVENT_DEFAULT_IGNORE = 4; 489 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 490 491 // true when the touch movement exceeds the slop 492 private boolean mConfirmMove; 493 494 // if true, touch events will be first processed by WebCore, if prevent 495 // default is not set, the UI will continue handle them. 496 private boolean mDeferTouchProcess; 497 498 // Currently, multi-touch events are sent to WebKit first then back to 499 // WebView while single-touch events are handled in WebView first. 500 // So there is a chance that a single-touch move event is handled in WebView 501 // before multi-touch events are finished. 502 // if mIsHandlingMultiTouch is true, which means multi-touch event handling 503 // is not finished, then any single-touch move event will be skipped. 504 // FIXME: send single-touch events to WebKit first then back to WebView. 505 private boolean mIsHandlingMultiTouch = false; 506 507 // to avoid interfering with the current touch events, track them 508 // separately. Currently no snapping or fling in the deferred process mode 509 private int mDeferTouchMode = TOUCH_DONE_MODE; 510 private float mLastDeferTouchX; 511 private float mLastDeferTouchY; 512 513 // To keep track of whether the current drag was initiated by a WebTextView, 514 // so that we know not to hide the cursor 515 boolean mDragFromTextInput; 516 517 // Whether or not to draw the cursor ring. 518 private boolean mDrawCursorRing = true; 519 520 // true if onPause has been called (and not onResume) 521 private boolean mIsPaused; 522 523 private HitTestResult mInitialHitTestResult; 524 525 /** 526 * Customizable constant 527 */ 528 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 529 private int mTouchSlopSquare; 530 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 531 private int mDoubleTapSlopSquare; 532 // pre-computed density adjusted navigation slop 533 private int mNavSlop; 534 // This should be ViewConfiguration.getTapTimeout() 535 // But system time out is 100ms, which is too short for the browser. 536 // In the browser, if it switches out of tap too soon, jump tap won't work. 537 private static final int TAP_TIMEOUT = 200; 538 // This should be ViewConfiguration.getLongPressTimeout() 539 // But system time out is 500ms, which is too short for the browser. 540 // With a short timeout, it's difficult to treat trigger a short press. 541 private static final int LONG_PRESS_TIMEOUT = 1000; 542 // needed to avoid flinging after a pause of no movement 543 private static final int MIN_FLING_TIME = 250; 544 // draw unfiltered after drag is held without movement 545 private static final int MOTIONLESS_TIME = 100; 546 // The amount of content to overlap between two screens when going through 547 // pages with the space bar, in pixels. 548 private static final int PAGE_SCROLL_OVERLAP = 24; 549 550 /** 551 * These prevent calling requestLayout if either dimension is fixed. This 552 * depends on the layout parameters and the measure specs. 553 */ 554 boolean mWidthCanMeasure; 555 boolean mHeightCanMeasure; 556 557 // Remember the last dimensions we sent to the native side so we can avoid 558 // sending the same dimensions more than once. 559 int mLastWidthSent; 560 int mLastHeightSent; 561 // Since view height sent to webkit could be fixed to avoid relayout, this 562 // value records the last sent actual view height. 563 int mLastActualHeightSent; 564 565 private int mContentWidth; // cache of value from WebViewCore 566 private int mContentHeight; // cache of value from WebViewCore 567 568 // Need to have the separate control for horizontal and vertical scrollbar 569 // style than the View's single scrollbar style 570 private boolean mOverlayHorizontalScrollbar = true; 571 private boolean mOverlayVerticalScrollbar = false; 572 573 // our standard speed. this way small distances will be traversed in less 574 // time than large distances, but we cap the duration, so that very large 575 // distances won't take too long to get there. 576 private static final int STD_SPEED = 480; // pixels per second 577 // time for the longest scroll animation 578 private static final int MAX_DURATION = 750; // milliseconds 579 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 580 581 // Used by OverScrollGlow 582 OverScroller mScroller; 583 584 private boolean mInOverScrollMode = false; 585 private static Paint mOverScrollBackground; 586 private static Paint mOverScrollBorder; 587 588 private boolean mWrapContent; 589 private static final int MOTIONLESS_FALSE = 0; 590 private static final int MOTIONLESS_PENDING = 1; 591 private static final int MOTIONLESS_TRUE = 2; 592 private static final int MOTIONLESS_IGNORE = 3; 593 private int mHeldMotionless; 594 595 // An instance for injecting accessibility in WebViews with disabled 596 // JavaScript or ones for which no accessibility script exists 597 private AccessibilityInjector mAccessibilityInjector; 598 599 // flag indicating if accessibility script is injected so we 600 // know to handle Shift and arrows natively first 601 private boolean mAccessibilityScriptInjected; 602 603 // the color used to highlight the touch rectangles 604 private static final int mHightlightColor = 0x33000000; 605 // the round corner for the highlight path 606 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 607 // the region indicating where the user touched on the screen 608 private Region mTouchHighlightRegion = new Region(); 609 // the paint for the touch highlight 610 private Paint mTouchHightlightPaint; 611 // debug only 612 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 613 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 614 private Paint mTouchCrossHairColor; 615 private int mTouchHighlightX; 616 private int mTouchHighlightY; 617 618 /* 619 * Private message ids 620 */ 621 private static final int REMEMBER_PASSWORD = 1; 622 private static final int NEVER_REMEMBER_PASSWORD = 2; 623 private static final int SWITCH_TO_SHORTPRESS = 3; 624 private static final int SWITCH_TO_LONGPRESS = 4; 625 private static final int RELEASE_SINGLE_TAP = 5; 626 private static final int REQUEST_FORM_DATA = 6; 627 private static final int RESUME_WEBCORE_PRIORITY = 7; 628 private static final int DRAG_HELD_MOTIONLESS = 8; 629 private static final int AWAKEN_SCROLL_BARS = 9; 630 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 631 private static final int SCROLL_SELECT_TEXT = 11; 632 633 634 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 635 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 636 637 /* 638 * Package message ids 639 */ 640 static final int SCROLL_TO_MSG_ID = 101; 641 static final int NEW_PICTURE_MSG_ID = 105; 642 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 643 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 644 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 645 static final int UPDATE_ZOOM_RANGE = 109; 646 static final int UNHANDLED_NAV_KEY = 110; 647 static final int CLEAR_TEXT_ENTRY = 111; 648 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 649 static final int SHOW_RECT_MSG_ID = 113; 650 static final int LONG_PRESS_CENTER = 114; 651 static final int PREVENT_TOUCH_ID = 115; 652 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 653 // obj=Rect in doc coordinates 654 static final int INVAL_RECT_MSG_ID = 117; 655 static final int REQUEST_KEYBOARD = 118; 656 static final int DO_MOTION_UP = 119; 657 static final int SHOW_FULLSCREEN = 120; 658 static final int HIDE_FULLSCREEN = 121; 659 static final int DOM_FOCUS_CHANGED = 122; 660 static final int REPLACE_BASE_CONTENT = 123; 661 static final int FORM_DID_BLUR = 124; 662 static final int RETURN_LABEL = 125; 663 static final int FIND_AGAIN = 126; 664 static final int CENTER_FIT_RECT = 127; 665 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 666 static final int SET_SCROLLBAR_MODES = 129; 667 static final int SELECTION_STRING_CHANGED = 130; 668 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 669 static final int SAVE_WEBARCHIVE_FINISHED = 132; 670 671 static final int SET_AUTOFILLABLE = 133; 672 static final int AUTOFILL_COMPLETE = 134; 673 674 static final int SELECT_AT = 135; 675 static final int SCREEN_ON = 136; 676 677 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 678 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 679 680 static final String[] HandlerPrivateDebugString = { 681 "REMEMBER_PASSWORD", // = 1; 682 "NEVER_REMEMBER_PASSWORD", // = 2; 683 "SWITCH_TO_SHORTPRESS", // = 3; 684 "SWITCH_TO_LONGPRESS", // = 4; 685 "RELEASE_SINGLE_TAP", // = 5; 686 "REQUEST_FORM_DATA", // = 6; 687 "RESUME_WEBCORE_PRIORITY", // = 7; 688 "DRAG_HELD_MOTIONLESS", // = 8; 689 "AWAKEN_SCROLL_BARS", // = 9; 690 "PREVENT_DEFAULT_TIMEOUT", // = 10; 691 "SCROLL_SELECT_TEXT" // = 11; 692 }; 693 694 static final String[] HandlerPackageDebugString = { 695 "SCROLL_TO_MSG_ID", // = 101; 696 "102", // = 102; 697 "103", // = 103; 698 "104", // = 104; 699 "NEW_PICTURE_MSG_ID", // = 105; 700 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 701 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 702 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 703 "UPDATE_ZOOM_RANGE", // = 109; 704 "UNHANDLED_NAV_KEY", // = 110; 705 "CLEAR_TEXT_ENTRY", // = 111; 706 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 707 "SHOW_RECT_MSG_ID", // = 113; 708 "LONG_PRESS_CENTER", // = 114; 709 "PREVENT_TOUCH_ID", // = 115; 710 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 711 "INVAL_RECT_MSG_ID", // = 117; 712 "REQUEST_KEYBOARD", // = 118; 713 "DO_MOTION_UP", // = 119; 714 "SHOW_FULLSCREEN", // = 120; 715 "HIDE_FULLSCREEN", // = 121; 716 "DOM_FOCUS_CHANGED", // = 122; 717 "REPLACE_BASE_CONTENT", // = 123; 718 "FORM_DID_BLUR", // = 124; 719 "RETURN_LABEL", // = 125; 720 "FIND_AGAIN", // = 126; 721 "CENTER_FIT_RECT", // = 127; 722 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 723 "SET_SCROLLBAR_MODES", // = 129; 724 "SELECTION_STRING_CHANGED", // = 130; 725 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 726 "SAVE_WEBARCHIVE_FINISHED", // = 132; 727 "SET_AUTOFILLABLE", // = 133; 728 "AUTOFILL_COMPLETE", // = 134; 729 "SELECT_AT", // = 135; 730 "SCREEN_ON" // = 136; 731 }; 732 733 // If the site doesn't use the viewport meta tag to specify the viewport, 734 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 735 static final int DEFAULT_VIEWPORT_WIDTH = 980; 736 737 // normally we try to fit the content to the minimum preferred width 738 // calculated by the Webkit. To avoid the bad behavior when some site's 739 // minimum preferred width keeps growing when changing the viewport width or 740 // the minimum preferred width is huge, an upper limit is needed. 741 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 742 743 // initial scale in percent. 0 means using default. 744 private int mInitialScaleInPercent = 0; 745 746 // Whether or not a scroll event should be sent to webkit. This is only set 747 // to false when restoring the scroll position. 748 private boolean mSendScrollEvent = true; 749 750 private int mSnapScrollMode = SNAP_NONE; 751 private static final int SNAP_NONE = 0; 752 private static final int SNAP_LOCK = 1; // not a separate state 753 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 754 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 755 private boolean mSnapPositive; 756 757 // keep these in sync with their counterparts in WebView.cpp 758 private static final int DRAW_EXTRAS_NONE = 0; 759 private static final int DRAW_EXTRAS_FIND = 1; 760 private static final int DRAW_EXTRAS_SELECTION = 2; 761 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 762 763 // keep this in sync with WebCore:ScrollbarMode in WebKit 764 private static final int SCROLLBAR_AUTO = 0; 765 private static final int SCROLLBAR_ALWAYSOFF = 1; 766 // as we auto fade scrollbar, this is ignored. 767 private static final int SCROLLBAR_ALWAYSON = 2; 768 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 769 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 770 771 // constants for determining script injection strategy 772 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 773 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 774 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 775 776 // the alias via which accessibility JavaScript interface is exposed 777 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 778 779 // JavaScript to inject the script chooser which will 780 // pick the right script for the current URL 781 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 782 "javascript:(function() {" + 783 " var chooser = document.createElement('script');" + 784 " chooser.type = 'text/javascript';" + 785 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 786 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 787 " })();"; 788 789 // Regular expression that matches the "axs" URL parameter. 790 // The value of 0 means the accessibility script is opted out 791 // The value of 1 means the accessibility script is already injected 792 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 793 794 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 795 private TextToSpeech mTextToSpeech; 796 797 // variable to cache the above pattern in case accessibility is enabled. 798 private Pattern mMatchAxsUrlParameterPattern; 799 800 /** 801 * Max distance to overscroll by in pixels. 802 * This how far content can be pulled beyond its normal bounds by the user. 803 */ 804 private int mOverscrollDistance; 805 806 /** 807 * Max distance to overfling by in pixels. 808 * This is how far flinged content can move beyond the end of its normal bounds. 809 */ 810 private int mOverflingDistance; 811 812 private OverScrollGlow mOverScrollGlow; 813 814 // Used to match key downs and key ups 815 private Vector<Integer> mKeysPressed; 816 817 /* package */ static boolean mLogEvent = true; 818 819 // for event log 820 private long mLastTouchUpTime = 0; 821 822 private WebViewCore.AutoFillData mAutoFillData; 823 824 /** 825 * URI scheme for telephone number 826 */ 827 public static final String SCHEME_TEL = "tel:"; 828 /** 829 * URI scheme for email address 830 */ 831 public static final String SCHEME_MAILTO = "mailto:"; 832 /** 833 * URI scheme for map address 834 */ 835 public static final String SCHEME_GEO = "geo:0,0?q="; 836 837 private int mBackgroundColor = Color.WHITE; 838 839 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 840 private int mAutoScrollX = 0; 841 private int mAutoScrollY = 0; 842 private int mMinAutoScrollX = 0; 843 private int mMaxAutoScrollX = 0; 844 private int mMinAutoScrollY = 0; 845 private int mMaxAutoScrollY = 0; 846 private Rect mScrollingLayerBounds = new Rect(); 847 private boolean mSentAutoScrollMessage = false; 848 849 // Used to notify listeners of a new picture. 850 private PictureListener mPictureListener; 851 /** 852 * Interface to listen for new pictures as they change. 853 */ 854 public interface PictureListener { 855 /** 856 * Notify the listener that the picture has changed. 857 * @param view The WebView that owns the picture. 858 * @param picture The new picture. 859 */ 860 public void onNewPicture(WebView view, Picture picture); 861 } 862 863 // FIXME: Want to make this public, but need to change the API file. 864 public /*static*/ class HitTestResult { 865 /** 866 * Default HitTestResult, where the target is unknown 867 */ 868 public static final int UNKNOWN_TYPE = 0; 869 /** 870 * HitTestResult for hitting a HTML::a tag 871 */ 872 public static final int ANCHOR_TYPE = 1; 873 /** 874 * HitTestResult for hitting a phone number 875 */ 876 public static final int PHONE_TYPE = 2; 877 /** 878 * HitTestResult for hitting a map address 879 */ 880 public static final int GEO_TYPE = 3; 881 /** 882 * HitTestResult for hitting an email address 883 */ 884 public static final int EMAIL_TYPE = 4; 885 /** 886 * HitTestResult for hitting an HTML::img tag 887 */ 888 public static final int IMAGE_TYPE = 5; 889 /** 890 * HitTestResult for hitting a HTML::a tag which contains HTML::img 891 */ 892 public static final int IMAGE_ANCHOR_TYPE = 6; 893 /** 894 * HitTestResult for hitting a HTML::a tag with src=http 895 */ 896 public static final int SRC_ANCHOR_TYPE = 7; 897 /** 898 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 899 */ 900 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 901 /** 902 * HitTestResult for hitting an edit text area 903 */ 904 public static final int EDIT_TEXT_TYPE = 9; 905 906 private int mType; 907 private String mExtra; 908 909 HitTestResult() { 910 mType = UNKNOWN_TYPE; 911 } 912 913 private void setType(int type) { 914 mType = type; 915 } 916 917 private void setExtra(String extra) { 918 mExtra = extra; 919 } 920 921 public int getType() { 922 return mType; 923 } 924 925 public String getExtra() { 926 return mExtra; 927 } 928 } 929 930 /** 931 * Construct a new WebView with a Context object. 932 * @param context A Context object used to access application assets. 933 */ 934 public WebView(Context context) { 935 this(context, null); 936 } 937 938 /** 939 * Construct a new WebView with layout parameters. 940 * @param context A Context object used to access application assets. 941 * @param attrs An AttributeSet passed to our parent. 942 */ 943 public WebView(Context context, AttributeSet attrs) { 944 this(context, attrs, com.android.internal.R.attr.webViewStyle); 945 } 946 947 /** 948 * Construct a new WebView with layout parameters and a default style. 949 * @param context A Context object used to access application assets. 950 * @param attrs An AttributeSet passed to our parent. 951 * @param defStyle The default style resource ID. 952 */ 953 public WebView(Context context, AttributeSet attrs, int defStyle) { 954 this(context, attrs, defStyle, false); 955 } 956 957 /** 958 * Construct a new WebView with layout parameters and a default style. 959 * @param context A Context object used to access application assets. 960 * @param attrs An AttributeSet passed to our parent. 961 * @param defStyle The default style resource ID. 962 */ 963 public WebView(Context context, AttributeSet attrs, int defStyle, 964 boolean privateBrowsing) { 965 this(context, attrs, defStyle, null, privateBrowsing); 966 } 967 968 /** 969 * Construct a new WebView with layout parameters, a default style and a set 970 * of custom Javscript interfaces to be added to the WebView at initialization 971 * time. This guarantees that these interfaces will be available when the JS 972 * context is initialized. 973 * @param context A Context object used to access application assets. 974 * @param attrs An AttributeSet passed to our parent. 975 * @param defStyle The default style resource ID. 976 * @param javaScriptInterfaces is a Map of interface names, as keys, and 977 * object implementing those interfaces, as values. 978 * @hide pending API council approval. 979 */ 980 protected WebView(Context context, AttributeSet attrs, int defStyle, 981 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 982 super(context, attrs, defStyle); 983 984 // Used by the chrome stack to find application paths 985 JniUtil.setContext(context); 986 987 mCallbackProxy = new CallbackProxy(context, this); 988 mViewManager = new ViewManager(this); 989 L10nUtils.loadStrings(context); 990 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 991 mDatabase = WebViewDatabase.getInstance(context); 992 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 993 mZoomManager = new ZoomManager(this, mCallbackProxy); 994 995 /* The init method must follow the creation of certain member variables, 996 * such as the mZoomManager. 997 */ 998 init(); 999 setupPackageListener(context); 1000 setupProxyListener(context); 1001 updateMultiTouchSupport(context); 1002 1003 if (privateBrowsing) { 1004 startPrivateBrowsing(); 1005 } 1006 1007 mAutoFillData = new WebViewCore.AutoFillData(); 1008 } 1009 1010 private static class ProxyReceiver extends BroadcastReceiver { 1011 @Override 1012 public void onReceive(Context context, Intent intent) { 1013 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1014 handleProxyBroadcast(intent); 1015 } 1016 } 1017 } 1018 1019 /* 1020 * A variable to track if there is a receiver added for PROXY_CHANGE_ACTION 1021 */ 1022 private static boolean sProxyReceiverAdded; 1023 1024 private static synchronized void setupProxyListener(Context context) { 1025 if (sProxyReceiverAdded) { 1026 return; 1027 } 1028 IntentFilter filter = new IntentFilter(); 1029 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1030 Intent currentProxy = context.getApplicationContext().registerReceiver( 1031 new ProxyReceiver(), filter); 1032 sProxyReceiverAdded = true; 1033 if (currentProxy != null) { 1034 handleProxyBroadcast(currentProxy); 1035 } 1036 } 1037 1038 private static void handleProxyBroadcast(Intent intent) { 1039 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1040 if (proxyProperties == null || proxyProperties.getHost() == null) { 1041 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, ""); 1042 return; 1043 } 1044 1045 String host = proxyProperties.getHost(); 1046 int port = proxyProperties.getPort(); 1047 if (port != 0) 1048 host += ":" + port; 1049 1050 // TODO: Handle exclusion list 1051 // The plan is to make an AndroidProxyResolver, and handle the blacklist 1052 // there 1053 String exclusionList = proxyProperties.getExclusionList(); 1054 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, host); 1055 } 1056 1057 /* 1058 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1059 * or ACTION_PACKAGE_REMOVED. 1060 */ 1061 private static boolean sPackageInstallationReceiverAdded = false; 1062 1063 /* 1064 * A set of Google packages we monitor for the 1065 * navigator.isApplicationInstalled() API. Add additional packages as 1066 * needed. 1067 */ 1068 private static Set<String> sGoogleApps; 1069 static { 1070 sGoogleApps = new HashSet<String>(); 1071 sGoogleApps.add("com.google.android.youtube"); 1072 } 1073 1074 private static class PackageListener extends BroadcastReceiver { 1075 @Override 1076 public void onReceive(Context context, Intent intent) { 1077 final String action = intent.getAction(); 1078 final String packageName = intent.getData().getSchemeSpecificPart(); 1079 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1080 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1081 // if it is replacing, refreshPlugins() when adding 1082 return; 1083 } 1084 1085 if (sGoogleApps.contains(packageName)) { 1086 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1087 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1088 } else { 1089 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1090 } 1091 } 1092 1093 PluginManager pm = PluginManager.getInstance(context); 1094 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1095 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1096 } 1097 } 1098 } 1099 1100 private void setupPackageListener(Context context) { 1101 1102 /* 1103 * we must synchronize the instance check and the creation of the 1104 * receiver to ensure that only ONE receiver exists for all WebView 1105 * instances. 1106 */ 1107 synchronized (WebView.class) { 1108 1109 // if the receiver already exists then we do not need to register it 1110 // again 1111 if (sPackageInstallationReceiverAdded) { 1112 return; 1113 } 1114 1115 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1116 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1117 filter.addDataScheme("package"); 1118 BroadcastReceiver packageListener = new PackageListener(); 1119 context.getApplicationContext().registerReceiver(packageListener, filter); 1120 sPackageInstallationReceiverAdded = true; 1121 } 1122 1123 // check if any of the monitored apps are already installed 1124 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1125 1126 @Override 1127 protected Set<String> doInBackground(Void... unused) { 1128 Set<String> installedPackages = new HashSet<String>(); 1129 PackageManager pm = mContext.getPackageManager(); 1130 List<PackageInfo> packages = pm.getInstalledPackages(0); 1131 for (PackageInfo p : packages) { 1132 if (sGoogleApps.contains(p.packageName)) { 1133 installedPackages.add(p.packageName); 1134 } 1135 } 1136 return installedPackages; 1137 } 1138 1139 // Executes on the UI thread 1140 @Override 1141 protected void onPostExecute(Set<String> installedPackages) { 1142 if (mWebViewCore != null) { 1143 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1144 } 1145 } 1146 }; 1147 task.execute(); 1148 } 1149 1150 void updateMultiTouchSupport(Context context) { 1151 mZoomManager.updateMultiTouchSupport(context); 1152 } 1153 1154 private void init() { 1155 setWillNotDraw(false); 1156 setFocusable(true); 1157 setFocusableInTouchMode(true); 1158 setClickable(true); 1159 setLongClickable(true); 1160 1161 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1162 int slop = configuration.getScaledTouchSlop(); 1163 mTouchSlopSquare = slop * slop; 1164 mMinLockSnapReverseDistance = slop; 1165 slop = configuration.getScaledDoubleTapSlop(); 1166 mDoubleTapSlopSquare = slop * slop; 1167 final float density = getContext().getResources().getDisplayMetrics().density; 1168 // use one line height, 16 based on our current default font, for how 1169 // far we allow a touch be away from the edge of a link 1170 mNavSlop = (int) (16 * density); 1171 mZoomManager.init(density); 1172 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1173 1174 // Compute the inverse of the density squared. 1175 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1176 1177 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1178 mOverflingDistance = configuration.getScaledOverflingDistance(); 1179 1180 setScrollBarStyle(super.getScrollBarStyle()); 1181 // Initially use a size of two, since the user is likely to only hold 1182 // down two keys at a time (shift + another key) 1183 mKeysPressed = new Vector<Integer>(2); 1184 } 1185 1186 /** 1187 * Adds accessibility APIs to JavaScript. 1188 * 1189 * Note: This method is responsible to performing the necessary 1190 * check if the accessibility APIs should be exposed. 1191 */ 1192 private void addAccessibilityApisToJavaScript() { 1193 if (AccessibilityManager.getInstance(mContext).isEnabled() 1194 && getSettings().getJavaScriptEnabled()) { 1195 // exposing the TTS for now ... 1196 mTextToSpeech = new TextToSpeech(getContext(), null); 1197 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1198 } 1199 } 1200 1201 /** 1202 * Removes accessibility APIs from JavaScript. 1203 */ 1204 private void removeAccessibilityApisFromJavaScript() { 1205 // exposing the TTS for now ... 1206 if (mTextToSpeech != null) { 1207 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1208 mTextToSpeech.shutdown(); 1209 mTextToSpeech = null; 1210 } 1211 } 1212 1213 @Override 1214 public void setOverScrollMode(int mode) { 1215 super.setOverScrollMode(mode); 1216 if (mode != OVER_SCROLL_NEVER) { 1217 if (mOverScrollGlow == null) { 1218 mOverScrollGlow = new OverScrollGlow(this); 1219 } 1220 } else { 1221 mOverScrollGlow = null; 1222 } 1223 } 1224 1225 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1226 final float density = mContext.getResources().getDisplayMetrics().density 1227 * 100 / zoomDensity; 1228 mNavSlop = (int) (16 * density); 1229 mZoomManager.updateDefaultZoomDensity(density); 1230 } 1231 1232 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1233 String password, final Message resumeMsg) { 1234 boolean rVal = false; 1235 if (resumeMsg == null) { 1236 // null resumeMsg implies saving password silently 1237 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1238 } else { 1239 final Message remember = mPrivateHandler.obtainMessage( 1240 REMEMBER_PASSWORD); 1241 remember.getData().putString("host", schemePlusHost); 1242 remember.getData().putString("username", username); 1243 remember.getData().putString("password", password); 1244 remember.obj = resumeMsg; 1245 1246 final Message neverRemember = mPrivateHandler.obtainMessage( 1247 NEVER_REMEMBER_PASSWORD); 1248 neverRemember.getData().putString("host", schemePlusHost); 1249 neverRemember.getData().putString("username", username); 1250 neverRemember.getData().putString("password", password); 1251 neverRemember.obj = resumeMsg; 1252 1253 new AlertDialog.Builder(getContext()) 1254 .setTitle(com.android.internal.R.string.save_password_label) 1255 .setMessage(com.android.internal.R.string.save_password_message) 1256 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1257 new DialogInterface.OnClickListener() { 1258 public void onClick(DialogInterface dialog, int which) { 1259 resumeMsg.sendToTarget(); 1260 } 1261 }) 1262 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1263 new DialogInterface.OnClickListener() { 1264 public void onClick(DialogInterface dialog, int which) { 1265 remember.sendToTarget(); 1266 } 1267 }) 1268 .setNegativeButton(com.android.internal.R.string.save_password_never, 1269 new DialogInterface.OnClickListener() { 1270 public void onClick(DialogInterface dialog, int which) { 1271 neverRemember.sendToTarget(); 1272 } 1273 }) 1274 .setOnCancelListener(new OnCancelListener() { 1275 public void onCancel(DialogInterface dialog) { 1276 resumeMsg.sendToTarget(); 1277 } 1278 }).show(); 1279 // Return true so that WebViewCore will pause while the dialog is 1280 // up. 1281 rVal = true; 1282 } 1283 return rVal; 1284 } 1285 1286 @Override 1287 public void setScrollBarStyle(int style) { 1288 if (style == View.SCROLLBARS_INSIDE_INSET 1289 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1290 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1291 } else { 1292 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1293 } 1294 super.setScrollBarStyle(style); 1295 } 1296 1297 /** 1298 * Specify whether the horizontal scrollbar has overlay style. 1299 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1300 */ 1301 public void setHorizontalScrollbarOverlay(boolean overlay) { 1302 mOverlayHorizontalScrollbar = overlay; 1303 } 1304 1305 /** 1306 * Specify whether the vertical scrollbar has overlay style. 1307 * @param overlay TRUE if vertical scrollbar should have overlay style. 1308 */ 1309 public void setVerticalScrollbarOverlay(boolean overlay) { 1310 mOverlayVerticalScrollbar = overlay; 1311 } 1312 1313 /** 1314 * Return whether horizontal scrollbar has overlay style 1315 * @return TRUE if horizontal scrollbar has overlay style. 1316 */ 1317 public boolean overlayHorizontalScrollbar() { 1318 return mOverlayHorizontalScrollbar; 1319 } 1320 1321 /** 1322 * Return whether vertical scrollbar has overlay style 1323 * @return TRUE if vertical scrollbar has overlay style. 1324 */ 1325 public boolean overlayVerticalScrollbar() { 1326 return mOverlayVerticalScrollbar; 1327 } 1328 1329 /* 1330 * Return the width of the view where the content of WebView should render 1331 * to. 1332 * Note: this can be called from WebCoreThread. 1333 */ 1334 /* package */ int getViewWidth() { 1335 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1336 return getWidth(); 1337 } else { 1338 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1339 } 1340 } 1341 1342 /** 1343 * returns the height of the titlebarview (if any). Does not care about 1344 * scrolling 1345 * @hide 1346 */ 1347 protected int getTitleHeight() { 1348 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1349 } 1350 1351 /* 1352 * Return the amount of the titlebarview (if any) that is visible 1353 * 1354 * @hide 1355 */ 1356 public int getVisibleTitleHeight() { 1357 // need to restrict mScrollY due to over scroll 1358 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1359 } 1360 1361 /* 1362 * Return the height of the view where the content of WebView should render 1363 * to. Note that this excludes mTitleBar, if there is one. 1364 * Note: this can be called from WebCoreThread. 1365 */ 1366 /* package */ int getViewHeight() { 1367 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1368 } 1369 1370 private int getViewHeightWithTitle() { 1371 int height = getHeight(); 1372 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1373 height -= getHorizontalScrollbarHeight(); 1374 } 1375 return height; 1376 } 1377 1378 /** 1379 * @return The SSL certificate for the main top-level page or null if 1380 * there is no certificate (the site is not secure). 1381 */ 1382 public SslCertificate getCertificate() { 1383 return mCertificate; 1384 } 1385 1386 /** 1387 * Sets the SSL certificate for the main top-level page. 1388 */ 1389 public void setCertificate(SslCertificate certificate) { 1390 if (DebugFlags.WEB_VIEW) { 1391 Log.v(LOGTAG, "setCertificate=" + certificate); 1392 } 1393 // here, the certificate can be null (if the site is not secure) 1394 mCertificate = certificate; 1395 } 1396 1397 //------------------------------------------------------------------------- 1398 // Methods called by activity 1399 //------------------------------------------------------------------------- 1400 1401 /** 1402 * Save the username and password for a particular host in the WebView's 1403 * internal database. 1404 * @param host The host that required the credentials. 1405 * @param username The username for the given host. 1406 * @param password The password for the given host. 1407 */ 1408 public void savePassword(String host, String username, String password) { 1409 mDatabase.setUsernamePassword(host, username, password); 1410 } 1411 1412 /** 1413 * Set the HTTP authentication credentials for a given host and realm. 1414 * 1415 * @param host The host for the credentials. 1416 * @param realm The realm for the credentials. 1417 * @param username The username for the password. If it is null, it means 1418 * password can't be saved. 1419 * @param password The password 1420 */ 1421 public void setHttpAuthUsernamePassword(String host, String realm, 1422 String username, String password) { 1423 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1424 } 1425 1426 /** 1427 * Retrieve the HTTP authentication username and password for a given 1428 * host & realm pair 1429 * 1430 * @param host The host for which the credentials apply. 1431 * @param realm The realm for which the credentials apply. 1432 * @return String[] if found, String[0] is username, which can be null and 1433 * String[1] is password. Return null if it can't find anything. 1434 */ 1435 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1436 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1437 } 1438 1439 /** 1440 * Remove Find or Select ActionModes, if active. 1441 */ 1442 private void clearActionModes() { 1443 if (mSelectCallback != null) { 1444 mSelectCallback.finish(); 1445 } 1446 if (mFindCallback != null) { 1447 mFindCallback.finish(); 1448 } 1449 } 1450 1451 /** 1452 * Called to clear state when moving from one page to another, or changing 1453 * in some other way that makes elements associated with the current page 1454 * (such as WebTextView or ActionModes) no longer relevant. 1455 */ 1456 private void clearHelpers() { 1457 clearTextEntry(); 1458 clearActionModes(); 1459 dismissFullScreenMode(); 1460 } 1461 1462 /** 1463 * Destroy the internal state of the WebView. This method should be called 1464 * after the WebView has been removed from the view system. No other 1465 * methods may be called on a WebView after destroy. 1466 */ 1467 public void destroy() { 1468 clearHelpers(); 1469 if (mListBoxDialog != null) { 1470 mListBoxDialog.dismiss(); 1471 mListBoxDialog = null; 1472 } 1473 if (mNativeClass != 0) nativeStopGL(); 1474 if (mWebViewCore != null) { 1475 // Set the handlers to null before destroying WebViewCore so no 1476 // more messages will be posted. 1477 mCallbackProxy.setWebViewClient(null); 1478 mCallbackProxy.setWebChromeClient(null); 1479 // Tell WebViewCore to destroy itself 1480 synchronized (this) { 1481 WebViewCore webViewCore = mWebViewCore; 1482 mWebViewCore = null; // prevent using partial webViewCore 1483 webViewCore.destroy(); 1484 } 1485 // Remove any pending messages that might not be serviced yet. 1486 mPrivateHandler.removeCallbacksAndMessages(null); 1487 mCallbackProxy.removeCallbacksAndMessages(null); 1488 // Wake up the WebCore thread just in case it is waiting for a 1489 // JavaScript dialog. 1490 synchronized (mCallbackProxy) { 1491 mCallbackProxy.notify(); 1492 } 1493 } 1494 if (mNativeClass != 0) { 1495 nativeDestroy(); 1496 mNativeClass = 0; 1497 } 1498 } 1499 1500 /** 1501 * Enables platform notifications of data state and proxy changes. 1502 */ 1503 public static void enablePlatformNotifications() { 1504 Network.enablePlatformNotifications(); 1505 } 1506 1507 /** 1508 * If platform notifications are enabled, this should be called 1509 * from the Activity's onPause() or onStop(). 1510 */ 1511 public static void disablePlatformNotifications() { 1512 Network.disablePlatformNotifications(); 1513 } 1514 1515 /** 1516 * Sets JavaScript engine flags. 1517 * 1518 * @param flags JS engine flags in a String 1519 * 1520 * @hide pending API solidification 1521 */ 1522 public void setJsFlags(String flags) { 1523 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1524 } 1525 1526 /** 1527 * Inform WebView of the network state. This is used to set 1528 * the JavaScript property window.navigator.isOnline and 1529 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1530 * @param networkUp boolean indicating if network is available 1531 */ 1532 public void setNetworkAvailable(boolean networkUp) { 1533 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1534 networkUp ? 1 : 0, 0); 1535 } 1536 1537 /** 1538 * Inform WebView about the current network type. 1539 * {@hide} 1540 */ 1541 public void setNetworkType(String type, String subtype) { 1542 Map<String, String> map = new HashMap<String, String>(); 1543 map.put("type", type); 1544 map.put("subtype", subtype); 1545 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1546 } 1547 /** 1548 * Save the state of this WebView used in 1549 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1550 * method no longer stores the display data for this WebView. The previous 1551 * behavior could potentially leak files if {@link #restoreState} was never 1552 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1553 * and restoring the display data. 1554 * @param outState The Bundle to store the WebView state. 1555 * @return The same copy of the back/forward list used to save the state. If 1556 * saveState fails, the returned list will be null. 1557 * @see #savePicture 1558 * @see #restorePicture 1559 */ 1560 public WebBackForwardList saveState(Bundle outState) { 1561 if (outState == null) { 1562 return null; 1563 } 1564 // We grab a copy of the back/forward list because a client of WebView 1565 // may have invalidated the history list by calling clearHistory. 1566 WebBackForwardList list = copyBackForwardList(); 1567 final int currentIndex = list.getCurrentIndex(); 1568 final int size = list.getSize(); 1569 // We should fail saving the state if the list is empty or the index is 1570 // not in a valid range. 1571 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1572 return null; 1573 } 1574 outState.putInt("index", currentIndex); 1575 // FIXME: This should just be a byte[][] instead of ArrayList but 1576 // Parcel.java does not have the code to handle multi-dimensional 1577 // arrays. 1578 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1579 for (int i = 0; i < size; i++) { 1580 WebHistoryItem item = list.getItemAtIndex(i); 1581 if (null == item) { 1582 // FIXME: this shouldn't happen 1583 // need to determine how item got set to null 1584 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1585 return null; 1586 } 1587 byte[] data = item.getFlattenedData(); 1588 if (data == null) { 1589 // It would be very odd to not have any data for a given history 1590 // item. And we will fail to rebuild the history list without 1591 // flattened data. 1592 return null; 1593 } 1594 history.add(data); 1595 } 1596 outState.putSerializable("history", history); 1597 if (mCertificate != null) { 1598 outState.putBundle("certificate", 1599 SslCertificate.saveState(mCertificate)); 1600 } 1601 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1602 mZoomManager.saveZoomState(outState); 1603 return list; 1604 } 1605 1606 /** 1607 * Save the current display data to the Bundle given. Used in conjunction 1608 * with {@link #saveState}. 1609 * @param b A Bundle to store the display data. 1610 * @param dest The file to store the serialized picture data. Will be 1611 * overwritten with this WebView's picture data. 1612 * @return True if the picture was successfully saved. 1613 */ 1614 public boolean savePicture(Bundle b, final File dest) { 1615 if (dest == null || b == null) { 1616 return false; 1617 } 1618 final Picture p = capturePicture(); 1619 // Use a temporary file while writing to ensure the destination file 1620 // contains valid data. 1621 final File temp = new File(dest.getPath() + ".writing"); 1622 new Thread(new Runnable() { 1623 public void run() { 1624 FileOutputStream out = null; 1625 try { 1626 out = new FileOutputStream(temp); 1627 p.writeToStream(out); 1628 // Writing the picture succeeded, rename the temporary file 1629 // to the destination. 1630 temp.renameTo(dest); 1631 } catch (Exception e) { 1632 // too late to do anything about it. 1633 } finally { 1634 if (out != null) { 1635 try { 1636 out.close(); 1637 } catch (Exception e) { 1638 // Can't do anything about that 1639 } 1640 } 1641 temp.delete(); 1642 } 1643 } 1644 }).start(); 1645 // now update the bundle 1646 b.putInt("scrollX", mScrollX); 1647 b.putInt("scrollY", mScrollY); 1648 mZoomManager.saveZoomState(b); 1649 return true; 1650 } 1651 1652 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1653 int sx = b.getInt("scrollX", 0); 1654 int sy = b.getInt("scrollY", 0); 1655 1656 mDrawHistory = true; 1657 mHistoryPicture = p; 1658 mScrollX = sx; 1659 mScrollY = sy; 1660 mZoomManager.restoreZoomState(b); 1661 final float scale = mZoomManager.getScale(); 1662 mHistoryWidth = Math.round(p.getWidth() * scale); 1663 mHistoryHeight = Math.round(p.getHeight() * scale); 1664 1665 invalidate(); 1666 } 1667 1668 /** 1669 * Restore the display data that was save in {@link #savePicture}. Used in 1670 * conjunction with {@link #restoreState}. 1671 * @param b A Bundle containing the saved display data. 1672 * @param src The file where the picture data was stored. 1673 * @return True if the picture was successfully restored. 1674 */ 1675 public boolean restorePicture(Bundle b, File src) { 1676 if (src == null || b == null) { 1677 return false; 1678 } 1679 if (!src.exists()) { 1680 return false; 1681 } 1682 try { 1683 final FileInputStream in = new FileInputStream(src); 1684 final Bundle copy = new Bundle(b); 1685 new Thread(new Runnable() { 1686 public void run() { 1687 try { 1688 final Picture p = Picture.createFromStream(in); 1689 if (p != null) { 1690 // Post a runnable on the main thread to update the 1691 // history picture fields. 1692 mPrivateHandler.post(new Runnable() { 1693 public void run() { 1694 restoreHistoryPictureFields(p, copy); 1695 } 1696 }); 1697 } 1698 } finally { 1699 try { 1700 in.close(); 1701 } catch (Exception e) { 1702 // Nothing we can do now. 1703 } 1704 } 1705 } 1706 }).start(); 1707 } catch (FileNotFoundException e){ 1708 e.printStackTrace(); 1709 } 1710 return true; 1711 } 1712 1713 /** 1714 * Restore the state of this WebView from the given map used in 1715 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1716 * be called to restore the state of the WebView before using the object. If 1717 * it is called after the WebView has had a chance to build state (load 1718 * pages, create a back/forward list, etc.) there may be undesirable 1719 * side-effects. Please note that this method no longer restores the 1720 * display data for this WebView. See {@link #savePicture} and {@link 1721 * #restorePicture} for saving and restoring the display data. 1722 * @param inState The incoming Bundle of state. 1723 * @return The restored back/forward list or null if restoreState failed. 1724 * @see #savePicture 1725 * @see #restorePicture 1726 */ 1727 public WebBackForwardList restoreState(Bundle inState) { 1728 WebBackForwardList returnList = null; 1729 if (inState == null) { 1730 return returnList; 1731 } 1732 if (inState.containsKey("index") && inState.containsKey("history")) { 1733 mCertificate = SslCertificate.restoreState( 1734 inState.getBundle("certificate")); 1735 1736 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1737 final int index = inState.getInt("index"); 1738 // We can't use a clone of the list because we need to modify the 1739 // shared copy, so synchronize instead to prevent concurrent 1740 // modifications. 1741 synchronized (list) { 1742 final List<byte[]> history = 1743 (List<byte[]>) inState.getSerializable("history"); 1744 final int size = history.size(); 1745 // Check the index bounds so we don't crash in native code while 1746 // restoring the history index. 1747 if (index < 0 || index >= size) { 1748 return null; 1749 } 1750 for (int i = 0; i < size; i++) { 1751 byte[] data = history.remove(0); 1752 if (data == null) { 1753 // If we somehow have null data, we cannot reconstruct 1754 // the item and thus our history list cannot be rebuilt. 1755 return null; 1756 } 1757 WebHistoryItem item = new WebHistoryItem(data); 1758 list.addHistoryItem(item); 1759 } 1760 // Grab the most recent copy to return to the caller. 1761 returnList = copyBackForwardList(); 1762 // Update the copy to have the correct index. 1763 returnList.setCurrentIndex(index); 1764 } 1765 // Restore private browsing setting. 1766 if (inState.getBoolean("privateBrowsingEnabled")) { 1767 getSettings().setPrivateBrowsingEnabled(true); 1768 } 1769 mZoomManager.restoreZoomState(inState); 1770 // Remove all pending messages because we are restoring previous 1771 // state. 1772 mWebViewCore.removeMessages(); 1773 // Send a restore state message. 1774 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1775 } 1776 return returnList; 1777 } 1778 1779 /** 1780 * Load the given url with the extra headers. 1781 * @param url The url of the resource to load. 1782 * @param extraHeaders The extra headers sent with this url. This should not 1783 * include the common headers like "user-agent". If it does, it 1784 * will be replaced by the intrinsic value of the WebView. 1785 */ 1786 public void loadUrl(String url, Map<String, String> extraHeaders) { 1787 switchOutDrawHistory(); 1788 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1789 arg.mUrl = url; 1790 arg.mExtraHeaders = extraHeaders; 1791 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1792 clearHelpers(); 1793 } 1794 1795 /** 1796 * Load the given url. 1797 * @param url The url of the resource to load. 1798 */ 1799 public void loadUrl(String url) { 1800 if (url == null) { 1801 return; 1802 } 1803 loadUrl(url, null); 1804 } 1805 1806 /** 1807 * Load the url with postData using "POST" method into the WebView. If url 1808 * is not a network url, it will be loaded with {link 1809 * {@link #loadUrl(String)} instead. 1810 * 1811 * @param url The url of the resource to load. 1812 * @param postData The data will be passed to "POST" request. 1813 */ 1814 public void postUrl(String url, byte[] postData) { 1815 if (URLUtil.isNetworkUrl(url)) { 1816 switchOutDrawHistory(); 1817 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1818 arg.mUrl = url; 1819 arg.mPostData = postData; 1820 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1821 clearHelpers(); 1822 } else { 1823 loadUrl(url); 1824 } 1825 } 1826 1827 /** 1828 * Load the given data into the WebView. This will load the data into 1829 * WebView using the data: scheme. Content loaded through this mechanism 1830 * does not have the ability to load content from the network. 1831 * @param data A String of data in the given encoding. The date must 1832 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1833 * %27, %3f respectively. 1834 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1835 * @param encoding The encoding of the data. i.e. utf-8, base64 1836 */ 1837 public void loadData(String data, String mimeType, String encoding) { 1838 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1839 } 1840 1841 /** 1842 * Load the given data into the WebView, use the provided URL as the base 1843 * URL for the content. The base URL is the URL that represents the page 1844 * that is loaded through this interface. As such, it is used to resolve any 1845 * relative URLs. The historyUrl is used for the history entry. 1846 * <p> 1847 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1848 * files through "file:///android_asset/" for the sub resources is more 1849 * restricted. If you provide null or empty string as baseUrl, you won't be 1850 * able to access asset files. If the baseUrl is anything other than 1851 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1852 * sub resources. 1853 * 1854 * @param baseUrl Url to resolve relative paths with, if null defaults to 1855 * "about:blank" 1856 * @param data A String of data in the given encoding. 1857 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1858 * defaults to "text/html" 1859 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1860 * @param historyUrl URL to use as the history entry. Can be null. 1861 */ 1862 public void loadDataWithBaseURL(String baseUrl, String data, 1863 String mimeType, String encoding, String historyUrl) { 1864 1865 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1866 loadData(data, mimeType, encoding); 1867 return; 1868 } 1869 switchOutDrawHistory(); 1870 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1871 arg.mBaseUrl = baseUrl; 1872 arg.mData = data; 1873 arg.mMimeType = mimeType; 1874 arg.mEncoding = encoding; 1875 arg.mHistoryUrl = historyUrl; 1876 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1877 clearHelpers(); 1878 } 1879 1880 /** 1881 * Saves the current view as a web archive. 1882 * 1883 * @param filename The filename where the archive should be placed. 1884 */ 1885 public void saveWebArchive(String filename) { 1886 saveWebArchive(filename, false, null); 1887 } 1888 1889 /* package */ static class SaveWebArchiveMessage { 1890 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1891 mBasename = basename; 1892 mAutoname = autoname; 1893 mCallback = callback; 1894 } 1895 1896 /* package */ final String mBasename; 1897 /* package */ final boolean mAutoname; 1898 /* package */ final ValueCallback<String> mCallback; 1899 /* package */ String mResultFile; 1900 } 1901 1902 /** 1903 * Saves the current view as a web archive. 1904 * 1905 * @param basename The filename where the archive should be placed. 1906 * @param autoname If false, takes basename to be a file. If true, basename 1907 * is assumed to be a directory in which a filename will be 1908 * chosen according to the url of the current page. 1909 * @param callback Called after the web archive has been saved. The 1910 * parameter for onReceiveValue will either be the filename 1911 * under which the file was saved, or null if saving the 1912 * file failed. 1913 */ 1914 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1915 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1916 new SaveWebArchiveMessage(basename, autoname, callback)); 1917 } 1918 1919 /** 1920 * Stop the current load. 1921 */ 1922 public void stopLoading() { 1923 // TODO: should we clear all the messages in the queue before sending 1924 // STOP_LOADING? 1925 switchOutDrawHistory(); 1926 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1927 } 1928 1929 /** 1930 * Reload the current url. 1931 */ 1932 public void reload() { 1933 clearHelpers(); 1934 switchOutDrawHistory(); 1935 mWebViewCore.sendMessage(EventHub.RELOAD); 1936 } 1937 1938 /** 1939 * Return true if this WebView has a back history item. 1940 * @return True iff this WebView has a back history item. 1941 */ 1942 public boolean canGoBack() { 1943 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1944 synchronized (l) { 1945 if (l.getClearPending()) { 1946 return false; 1947 } else { 1948 return l.getCurrentIndex() > 0; 1949 } 1950 } 1951 } 1952 1953 /** 1954 * Go back in the history of this WebView. 1955 */ 1956 public void goBack() { 1957 goBackOrForward(-1); 1958 } 1959 1960 /** 1961 * Return true if this WebView has a forward history item. 1962 * @return True iff this Webview has a forward history item. 1963 */ 1964 public boolean canGoForward() { 1965 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1966 synchronized (l) { 1967 if (l.getClearPending()) { 1968 return false; 1969 } else { 1970 return l.getCurrentIndex() < l.getSize() - 1; 1971 } 1972 } 1973 } 1974 1975 /** 1976 * Go forward in the history of this WebView. 1977 */ 1978 public void goForward() { 1979 goBackOrForward(1); 1980 } 1981 1982 /** 1983 * Return true if the page can go back or forward the given 1984 * number of steps. 1985 * @param steps The negative or positive number of steps to move the 1986 * history. 1987 */ 1988 public boolean canGoBackOrForward(int steps) { 1989 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1990 synchronized (l) { 1991 if (l.getClearPending()) { 1992 return false; 1993 } else { 1994 int newIndex = l.getCurrentIndex() + steps; 1995 return newIndex >= 0 && newIndex < l.getSize(); 1996 } 1997 } 1998 } 1999 2000 /** 2001 * Go to the history item that is the number of steps away from 2002 * the current item. Steps is negative if backward and positive 2003 * if forward. 2004 * @param steps The number of steps to take back or forward in the back 2005 * forward list. 2006 */ 2007 public void goBackOrForward(int steps) { 2008 goBackOrForward(steps, false); 2009 } 2010 2011 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2012 if (steps != 0) { 2013 clearHelpers(); 2014 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2015 ignoreSnapshot ? 1 : 0); 2016 } 2017 } 2018 2019 /** 2020 * Returns true if private browsing is enabled in this WebView. 2021 */ 2022 public boolean isPrivateBrowsingEnabled() { 2023 return getSettings().isPrivateBrowsingEnabled(); 2024 } 2025 2026 private void startPrivateBrowsing() { 2027 getSettings().setPrivateBrowsingEnabled(true); 2028 } 2029 2030 private boolean extendScroll(int y) { 2031 int finalY = mScroller.getFinalY(); 2032 int newY = pinLocY(finalY + y); 2033 if (newY == finalY) return false; 2034 mScroller.setFinalY(newY); 2035 mScroller.extendDuration(computeDuration(0, y)); 2036 return true; 2037 } 2038 2039 /** 2040 * Scroll the contents of the view up by half the view size 2041 * @param top true to jump to the top of the page 2042 * @return true if the page was scrolled 2043 */ 2044 public boolean pageUp(boolean top) { 2045 if (mNativeClass == 0) { 2046 return false; 2047 } 2048 nativeClearCursor(); // start next trackball movement from page edge 2049 if (top) { 2050 // go to the top of the document 2051 return pinScrollTo(mScrollX, 0, true, 0); 2052 } 2053 // Page up 2054 int h = getHeight(); 2055 int y; 2056 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2057 y = -h + PAGE_SCROLL_OVERLAP; 2058 } else { 2059 y = -h / 2; 2060 } 2061 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2062 : extendScroll(y); 2063 } 2064 2065 /** 2066 * Scroll the contents of the view down by half the page size 2067 * @param bottom true to jump to bottom of page 2068 * @return true if the page was scrolled 2069 */ 2070 public boolean pageDown(boolean bottom) { 2071 if (mNativeClass == 0) { 2072 return false; 2073 } 2074 nativeClearCursor(); // start next trackball movement from page edge 2075 if (bottom) { 2076 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2077 } 2078 // Page down. 2079 int h = getHeight(); 2080 int y; 2081 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2082 y = h - PAGE_SCROLL_OVERLAP; 2083 } else { 2084 y = h / 2; 2085 } 2086 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2087 : extendScroll(y); 2088 } 2089 2090 /** 2091 * Clear the view so that onDraw() will draw nothing but white background, 2092 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2093 */ 2094 public void clearView() { 2095 mContentWidth = 0; 2096 mContentHeight = 0; 2097 setBaseLayer(0, null, false); 2098 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2099 } 2100 2101 /** 2102 * Return a new picture that captures the current display of the webview. 2103 * This is a copy of the display, and will be unaffected if the webview 2104 * later loads a different URL. 2105 * 2106 * @return a picture containing the current contents of the view. Note this 2107 * picture is of the entire document, and is not restricted to the 2108 * bounds of the view. 2109 */ 2110 public Picture capturePicture() { 2111 if (mNativeClass == 0) return null; 2112 Picture result = new Picture(); 2113 nativeCopyBaseContentToPicture(result); 2114 return result; 2115 } 2116 2117 /** 2118 * Return true if the browser is displaying a TextView for text input. 2119 */ 2120 private boolean inEditingMode() { 2121 return mWebTextView != null && mWebTextView.getParent() != null; 2122 } 2123 2124 /** 2125 * Remove the WebTextView. 2126 */ 2127 private void clearTextEntry() { 2128 if (inEditingMode()) { 2129 mWebTextView.remove(); 2130 } else { 2131 // The keyboard may be open with the WebView as the served view 2132 hideSoftKeyboard(); 2133 } 2134 } 2135 2136 /** 2137 * Return the current scale of the WebView 2138 * @return The current scale. 2139 */ 2140 public float getScale() { 2141 return mZoomManager.getScale(); 2142 } 2143 2144 /** 2145 * Set the initial scale for the WebView. 0 means default. If 2146 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2147 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2148 * WebView starts will this value as initial scale. 2149 * 2150 * @param scaleInPercent The initial scale in percent. 2151 */ 2152 public void setInitialScale(int scaleInPercent) { 2153 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2154 } 2155 2156 /** 2157 * Invoke the graphical zoom picker widget for this WebView. This will 2158 * result in the zoom widget appearing on the screen to control the zoom 2159 * level of this WebView. 2160 */ 2161 public void invokeZoomPicker() { 2162 if (!getSettings().supportZoom()) { 2163 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2164 return; 2165 } 2166 clearHelpers(); 2167 mZoomManager.invokeZoomPicker(); 2168 } 2169 2170 /** 2171 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2172 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2173 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2174 * anchor does not have a url or if it is a JavaScript url, the type will 2175 * be UNKNOWN_TYPE and the url has to be retrieved through 2176 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2177 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2178 * the "extra" field. A type of 2179 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2180 * a child node. If a phone number is found, the HitTestResult type is set 2181 * to PHONE_TYPE and the phone number is set in the "extra" field of 2182 * HitTestResult. If a map address is found, the HitTestResult type is set 2183 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2184 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2185 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2186 * HitTestResult type is set to UNKNOWN_TYPE. 2187 */ 2188 public HitTestResult getHitTestResult() { 2189 return hitTestResult(mInitialHitTestResult); 2190 } 2191 2192 private HitTestResult hitTestResult(HitTestResult fallback) { 2193 if (mNativeClass == 0) { 2194 return null; 2195 } 2196 2197 HitTestResult result = new HitTestResult(); 2198 if (nativeHasCursorNode()) { 2199 if (nativeCursorIsTextInput()) { 2200 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2201 } else { 2202 String text = nativeCursorText(); 2203 if (text != null) { 2204 if (text.startsWith(SCHEME_TEL)) { 2205 result.setType(HitTestResult.PHONE_TYPE); 2206 result.setExtra(text.substring(SCHEME_TEL.length())); 2207 } else if (text.startsWith(SCHEME_MAILTO)) { 2208 result.setType(HitTestResult.EMAIL_TYPE); 2209 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2210 } else if (text.startsWith(SCHEME_GEO)) { 2211 result.setType(HitTestResult.GEO_TYPE); 2212 result.setExtra(URLDecoder.decode(text 2213 .substring(SCHEME_GEO.length()))); 2214 } else if (nativeCursorIsAnchor()) { 2215 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2216 result.setExtra(text); 2217 } 2218 } 2219 } 2220 } else if (fallback != null) { 2221 /* If webkit causes a rebuild while the long press is in progress, 2222 * the cursor node may be reset, even if it is still around. This 2223 * uses the cursor node saved when the touch began. Since the 2224 * nativeImageURI below only changes the result if it is successful, 2225 * this uses the data beneath the touch if available or the original 2226 * tap data otherwise. 2227 */ 2228 Log.v(LOGTAG, "hitTestResult use fallback"); 2229 result = fallback; 2230 } 2231 int type = result.getType(); 2232 if (type == HitTestResult.UNKNOWN_TYPE 2233 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2234 // Now check to see if it is an image. 2235 int contentX = viewToContentX(mLastTouchX + mScrollX); 2236 int contentY = viewToContentY(mLastTouchY + mScrollY); 2237 String text = nativeImageURI(contentX, contentY); 2238 if (text != null) { 2239 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2240 HitTestResult.IMAGE_TYPE : 2241 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2242 result.setExtra(text); 2243 } 2244 } 2245 return result; 2246 } 2247 2248 // Called by JNI when the DOM has changed the focus. Clear the focus so 2249 // that new keys will go to the newly focused field 2250 private void domChangedFocus() { 2251 if (inEditingMode()) { 2252 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2253 } 2254 } 2255 /** 2256 * Request the anchor or image element URL at the last tapped point. 2257 * If hrefMsg is null, this method returns immediately and does not 2258 * dispatch hrefMsg to its target. If the tapped point hits an image, 2259 * an anchor, or an image in an anchor, the message associates 2260 * strings in named keys in its data. The value paired with the key 2261 * may be an empty string. 2262 * 2263 * @param hrefMsg This message will be dispatched with the result of the 2264 * request. The message data contains three keys: 2265 * - "url" returns the anchor's href attribute. 2266 * - "title" returns the anchor's text. 2267 * - "src" returns the image's src attribute. 2268 */ 2269 public void requestFocusNodeHref(Message hrefMsg) { 2270 if (hrefMsg == null) { 2271 return; 2272 } 2273 int contentX = viewToContentX(mLastTouchX + mScrollX); 2274 int contentY = viewToContentY(mLastTouchY + mScrollY); 2275 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2276 contentX, contentY, hrefMsg); 2277 } 2278 2279 /** 2280 * Request the url of the image last touched by the user. msg will be sent 2281 * to its target with a String representing the url as its object. 2282 * 2283 * @param msg This message will be dispatched with the result of the request 2284 * as the data member with "url" as key. The result can be null. 2285 */ 2286 public void requestImageRef(Message msg) { 2287 if (0 == mNativeClass) return; // client isn't initialized 2288 int contentX = viewToContentX(mLastTouchX + mScrollX); 2289 int contentY = viewToContentY(mLastTouchY + mScrollY); 2290 String ref = nativeImageURI(contentX, contentY); 2291 Bundle data = msg.getData(); 2292 data.putString("url", ref); 2293 msg.setData(data); 2294 msg.sendToTarget(); 2295 } 2296 2297 static int pinLoc(int x, int viewMax, int docMax) { 2298// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2299 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2300 // pin the short document to the top/left of the screen 2301 x = 0; 2302// Log.d(LOGTAG, "--- center " + x); 2303 } else if (x < 0) { 2304 x = 0; 2305// Log.d(LOGTAG, "--- zero"); 2306 } else if (x + viewMax > docMax) { 2307 x = docMax - viewMax; 2308// Log.d(LOGTAG, "--- pin " + x); 2309 } 2310 return x; 2311 } 2312 2313 // Expects x in view coordinates 2314 int pinLocX(int x) { 2315 if (mInOverScrollMode) return x; 2316 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2317 } 2318 2319 // Expects y in view coordinates 2320 int pinLocY(int y) { 2321 if (mInOverScrollMode) return y; 2322 return pinLoc(y, getViewHeightWithTitle(), 2323 computeRealVerticalScrollRange() + getTitleHeight()); 2324 } 2325 2326 /** 2327 * A title bar which is embedded in this WebView, and scrolls along with it 2328 * vertically, but not horizontally. 2329 */ 2330 private View mTitleBar; 2331 2332 /** 2333 * the title bar rendering gravity 2334 */ 2335 private int mTitleGravity; 2336 2337 /** 2338 * Add or remove a title bar to be embedded into the WebView, and scroll 2339 * along with it vertically, while remaining in view horizontally. Pass 2340 * null to remove the title bar from the WebView, and return to drawing 2341 * the WebView normally without translating to account for the title bar. 2342 * @hide 2343 */ 2344 public void setEmbeddedTitleBar(View v) { 2345 if (mTitleBar == v) return; 2346 if (mTitleBar != null) { 2347 removeView(mTitleBar); 2348 } 2349 if (null != v) { 2350 addView(v, new AbsoluteLayout.LayoutParams( 2351 ViewGroup.LayoutParams.MATCH_PARENT, 2352 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2353 } 2354 mTitleBar = v; 2355 } 2356 2357 /** 2358 * Set where to render the embedded title bar 2359 * NO_GRAVITY at the top of the page 2360 * TOP at the top of the screen 2361 * @hide 2362 */ 2363 public void setTitleBarGravity(int gravity) { 2364 mTitleGravity = gravity; 2365 } 2366 2367 /** 2368 * Given a distance in view space, convert it to content space. Note: this 2369 * does not reflect translation, just scaling, so this should not be called 2370 * with coordinates, but should be called for dimensions like width or 2371 * height. 2372 */ 2373 private int viewToContentDimension(int d) { 2374 return Math.round(d * mZoomManager.getInvScale()); 2375 } 2376 2377 /** 2378 * Given an x coordinate in view space, convert it to content space. Also 2379 * may be used for absolute heights (such as for the WebTextView's 2380 * textSize, which is unaffected by the height of the title bar). 2381 */ 2382 /*package*/ int viewToContentX(int x) { 2383 return viewToContentDimension(x); 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. 2390 */ 2391 /*package*/ int viewToContentY(int y) { 2392 return viewToContentDimension(y - getTitleHeight()); 2393 } 2394 2395 /** 2396 * Given a x coordinate in view space, convert it to content space. 2397 * Returns the result as a float. 2398 */ 2399 private float viewToContentXf(int x) { 2400 return x * mZoomManager.getInvScale(); 2401 } 2402 2403 /** 2404 * Given a y coordinate in view space, convert it to content space. 2405 * Takes into account the height of the title bar if there is one 2406 * embedded into the WebView. Returns the result as a float. 2407 */ 2408 private float viewToContentYf(int y) { 2409 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2410 } 2411 2412 /** 2413 * Given a distance in content space, convert it to view space. Note: this 2414 * does not reflect translation, just scaling, so this should not be called 2415 * with coordinates, but should be called for dimensions like width or 2416 * height. 2417 */ 2418 /*package*/ int contentToViewDimension(int d) { 2419 return Math.round(d * mZoomManager.getScale()); 2420 } 2421 2422 /** 2423 * Given an x coordinate in content space, convert it to view 2424 * space. 2425 */ 2426 /*package*/ int contentToViewX(int x) { 2427 return contentToViewDimension(x); 2428 } 2429 2430 /** 2431 * Given a y coordinate in content space, convert it to view 2432 * space. Takes into account the height of the title bar. 2433 */ 2434 /*package*/ int contentToViewY(int y) { 2435 return contentToViewDimension(y) + getTitleHeight(); 2436 } 2437 2438 private Rect contentToViewRect(Rect x) { 2439 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2440 contentToViewX(x.right), contentToViewY(x.bottom)); 2441 } 2442 2443 /* To invalidate a rectangle in content coordinates, we need to transform 2444 the rect into view coordinates, so we can then call invalidate(...). 2445 2446 Normally, we would just call contentToView[XY](...), which eventually 2447 calls Math.round(coordinate * mActualScale). However, for invalidates, 2448 we need to account for the slop that occurs with antialiasing. To 2449 address that, we are a little more liberal in the size of the rect that 2450 we invalidate. 2451 2452 This liberal calculation calls floor() for the top/left, and ceil() for 2453 the bottom/right coordinates. This catches the possible extra pixels of 2454 antialiasing that we might have missed with just round(). 2455 */ 2456 2457 // Called by JNI to invalidate the View, given rectangle coordinates in 2458 // content space 2459 private void viewInvalidate(int l, int t, int r, int b) { 2460 final float scale = mZoomManager.getScale(); 2461 final int dy = getTitleHeight(); 2462 invalidate((int)Math.floor(l * scale), 2463 (int)Math.floor(t * scale) + dy, 2464 (int)Math.ceil(r * scale), 2465 (int)Math.ceil(b * scale) + dy); 2466 } 2467 2468 // Called by JNI to invalidate the View after a delay, given rectangle 2469 // coordinates in content space 2470 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2471 final float scale = mZoomManager.getScale(); 2472 final int dy = getTitleHeight(); 2473 postInvalidateDelayed(delay, 2474 (int)Math.floor(l * scale), 2475 (int)Math.floor(t * scale) + dy, 2476 (int)Math.ceil(r * scale), 2477 (int)Math.ceil(b * scale) + dy); 2478 } 2479 2480 private void invalidateContentRect(Rect r) { 2481 viewInvalidate(r.left, r.top, r.right, r.bottom); 2482 } 2483 2484 // stop the scroll animation, and don't let a subsequent fling add 2485 // to the existing velocity 2486 private void abortAnimation() { 2487 mScroller.abortAnimation(); 2488 mLastVelocity = 0; 2489 } 2490 2491 /* call from webcoreview.draw(), so we're still executing in the UI thread 2492 */ 2493 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2494 2495 // premature data from webkit, ignore 2496 if ((w | h) == 0) { 2497 return; 2498 } 2499 2500 // don't abort a scroll animation if we didn't change anything 2501 if (mContentWidth != w || mContentHeight != h) { 2502 // record new dimensions 2503 mContentWidth = w; 2504 mContentHeight = h; 2505 // If history Picture is drawn, don't update scroll. They will be 2506 // updated when we get out of that mode. 2507 if (!mDrawHistory) { 2508 // repin our scroll, taking into account the new content size 2509 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2510 if (!mScroller.isFinished()) { 2511 // We are in the middle of a scroll. Repin the final scroll 2512 // position. 2513 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2514 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2515 } 2516 } 2517 } 2518 contentSizeChanged(updateLayout); 2519 } 2520 2521 // Used to avoid sending many visible rect messages. 2522 private Rect mLastVisibleRectSent; 2523 private Rect mLastGlobalRect; 2524 2525 Rect sendOurVisibleRect() { 2526 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2527 Rect rect = new Rect(); 2528 calcOurContentVisibleRect(rect); 2529 // Rect.equals() checks for null input. 2530 if (!rect.equals(mLastVisibleRectSent)) { 2531 Point pos = new Point(rect.left, rect.top); 2532 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2533 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2534 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, pos); 2535 mLastVisibleRectSent = rect; 2536 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2537 } 2538 Rect globalRect = new Rect(); 2539 if (getGlobalVisibleRect(globalRect) 2540 && !globalRect.equals(mLastGlobalRect)) { 2541 if (DebugFlags.WEB_VIEW) { 2542 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2543 + globalRect.top + ",r=" + globalRect.right + ",b=" 2544 + globalRect.bottom); 2545 } 2546 // TODO: the global offset is only used by windowRect() 2547 // in ChromeClientAndroid ; other clients such as touch 2548 // and mouse events could return view + screen relative points. 2549 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2550 mLastGlobalRect = globalRect; 2551 } 2552 return rect; 2553 } 2554 2555 // Sets r to be the visible rectangle of our webview in view coordinates 2556 private void calcOurVisibleRect(Rect r) { 2557 Point p = new Point(); 2558 getGlobalVisibleRect(r, p); 2559 r.offset(-p.x, -p.y); 2560 } 2561 2562 // Sets r to be our visible rectangle in content coordinates 2563 private void calcOurContentVisibleRect(Rect r) { 2564 calcOurVisibleRect(r); 2565 r.left = viewToContentX(r.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 = viewToContentY(r.top + getVisibleTitleHeight()); 2571 r.right = viewToContentX(r.right); 2572 r.bottom = viewToContentY(r.bottom); 2573 } 2574 2575 // Sets r to be our visible rectangle in content coordinates. We use this 2576 // method on the native side to compute the position of the fixed layers. 2577 // Uses floating coordinates (necessary to correctly place elements when 2578 // the scale factor is not 1) 2579 private void calcOurContentVisibleRectF(RectF r) { 2580 Rect ri = new Rect(0,0,0,0); 2581 calcOurVisibleRect(ri); 2582 r.left = viewToContentXf(ri.left); 2583 // viewToContentY will remove the total height of the title bar. Add 2584 // the visible height back in to account for the fact that if the title 2585 // bar is partially visible, the part of the visible rect which is 2586 // displaying our content is displaced by that amount. 2587 r.top = viewToContentYf(ri.top + getVisibleTitleHeight()); 2588 r.right = viewToContentXf(ri.right); 2589 r.bottom = viewToContentYf(ri.bottom); 2590 } 2591 2592 static class ViewSizeData { 2593 int mWidth; 2594 int mHeight; 2595 float mHeightWidthRatio; 2596 int mActualViewHeight; 2597 int mTextWrapWidth; 2598 int mAnchorX; 2599 int mAnchorY; 2600 float mScale; 2601 boolean mIgnoreHeight; 2602 } 2603 2604 /** 2605 * Compute unzoomed width and height, and if they differ from the last 2606 * values we sent, send them to webkit (to be used as new viewport) 2607 * 2608 * @param force ensures that the message is sent to webkit even if the width 2609 * or height has not changed since the last message 2610 * 2611 * @return true if new values were sent 2612 */ 2613 boolean sendViewSizeZoom(boolean force) { 2614 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2615 2616 int viewWidth = getViewWidth(); 2617 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2618 // This height could be fixed and be different from actual visible height. 2619 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2620 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2621 // Make the ratio more accurate than (newHeight / newWidth), since the 2622 // latter both are calculated and rounded. 2623 float heightWidthRatio = (float) viewHeight / viewWidth; 2624 /* 2625 * Because the native side may have already done a layout before the 2626 * View system was able to measure us, we have to send a height of 0 to 2627 * remove excess whitespace when we grow our width. This will trigger a 2628 * layout and a change in content size. This content size change will 2629 * mean that contentSizeChanged will either call this method directly or 2630 * indirectly from onSizeChanged. 2631 */ 2632 if (newWidth > mLastWidthSent && mWrapContent) { 2633 newHeight = 0; 2634 heightWidthRatio = 0; 2635 } 2636 // Actual visible content height. 2637 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2638 // Avoid sending another message if the dimensions have not changed. 2639 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2640 actualViewHeight != mLastActualHeightSent) { 2641 ViewSizeData data = new ViewSizeData(); 2642 data.mWidth = newWidth; 2643 data.mHeight = newHeight; 2644 data.mHeightWidthRatio = heightWidthRatio; 2645 data.mActualViewHeight = actualViewHeight; 2646 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2647 data.mScale = mZoomManager.getScale(); 2648 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2649 && !mHeightCanMeasure; 2650 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2651 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2652 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2653 mLastWidthSent = newWidth; 2654 mLastHeightSent = newHeight; 2655 mLastActualHeightSent = actualViewHeight; 2656 mZoomManager.clearDocumentAnchor(); 2657 return true; 2658 } 2659 return false; 2660 } 2661 2662 private int computeRealHorizontalScrollRange() { 2663 if (mDrawHistory) { 2664 return mHistoryWidth; 2665 } else { 2666 // to avoid rounding error caused unnecessary scrollbar, use floor 2667 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2668 } 2669 } 2670 2671 @Override 2672 protected int computeHorizontalScrollRange() { 2673 int range = computeRealHorizontalScrollRange(); 2674 2675 // Adjust reported range if overscrolled to compress the scroll bars 2676 final int scrollX = mScrollX; 2677 final int overscrollRight = computeMaxScrollX(); 2678 if (scrollX < 0) { 2679 range -= scrollX; 2680 } else if (scrollX > overscrollRight) { 2681 range += scrollX - overscrollRight; 2682 } 2683 2684 return range; 2685 } 2686 2687 @Override 2688 protected int computeHorizontalScrollOffset() { 2689 return Math.max(mScrollX, 0); 2690 } 2691 2692 private int computeRealVerticalScrollRange() { 2693 if (mDrawHistory) { 2694 return mHistoryHeight; 2695 } else { 2696 // to avoid rounding error caused unnecessary scrollbar, use floor 2697 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2698 } 2699 } 2700 2701 @Override 2702 protected int computeVerticalScrollRange() { 2703 int range = computeRealVerticalScrollRange(); 2704 2705 // Adjust reported range if overscrolled to compress the scroll bars 2706 final int scrollY = mScrollY; 2707 final int overscrollBottom = computeMaxScrollY(); 2708 if (scrollY < 0) { 2709 range -= scrollY; 2710 } else if (scrollY > overscrollBottom) { 2711 range += scrollY - overscrollBottom; 2712 } 2713 2714 return range; 2715 } 2716 2717 @Override 2718 protected int computeVerticalScrollOffset() { 2719 return Math.max(mScrollY - getTitleHeight(), 0); 2720 } 2721 2722 @Override 2723 protected int computeVerticalScrollExtent() { 2724 return getViewHeight(); 2725 } 2726 2727 /** @hide */ 2728 @Override 2729 protected void onDrawVerticalScrollBar(Canvas canvas, 2730 Drawable scrollBar, 2731 int l, int t, int r, int b) { 2732 if (mScrollY < 0) { 2733 t -= mScrollY; 2734 } 2735 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2736 scrollBar.draw(canvas); 2737 } 2738 2739 @Override 2740 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2741 boolean clampedY) { 2742 // Special-case layer scrolling so that we do not trigger normal scroll 2743 // updating. 2744 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2745 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2746 mScrollingLayerRect.left = scrollX; 2747 mScrollingLayerRect.top = scrollY; 2748 invalidate(); 2749 return; 2750 } 2751 mInOverScrollMode = false; 2752 int maxX = computeMaxScrollX(); 2753 int maxY = computeMaxScrollY(); 2754 if (maxX == 0) { 2755 // do not over scroll x if the page just fits the screen 2756 scrollX = pinLocX(scrollX); 2757 } else if (scrollX < 0 || scrollX > maxX) { 2758 mInOverScrollMode = true; 2759 } 2760 if (scrollY < 0 || scrollY > maxY) { 2761 mInOverScrollMode = true; 2762 } 2763 2764 int oldX = mScrollX; 2765 int oldY = mScrollY; 2766 2767 super.scrollTo(scrollX, scrollY); 2768 2769 if (mOverScrollGlow != null) { 2770 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2771 } 2772 } 2773 2774 /** 2775 * Get the url for the current page. This is not always the same as the url 2776 * passed to WebViewClient.onPageStarted because although the load for 2777 * that url has begun, the current page may not have changed. 2778 * @return The url for the current page. 2779 */ 2780 public String getUrl() { 2781 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2782 return h != null ? h.getUrl() : null; 2783 } 2784 2785 /** 2786 * Get the original url for the current page. This is not always the same 2787 * as the url passed to WebViewClient.onPageStarted because although the 2788 * load for that url has begun, the current page may not have changed. 2789 * Also, there may have been redirects resulting in a different url to that 2790 * originally requested. 2791 * @return The url that was originally requested for the current page. 2792 */ 2793 public String getOriginalUrl() { 2794 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2795 return h != null ? h.getOriginalUrl() : null; 2796 } 2797 2798 /** 2799 * Get the title for the current page. This is the title of the current page 2800 * until WebViewClient.onReceivedTitle is called. 2801 * @return The title for the current page. 2802 */ 2803 public String getTitle() { 2804 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2805 return h != null ? h.getTitle() : null; 2806 } 2807 2808 /** 2809 * Get the favicon for the current page. This is the favicon of the current 2810 * page until WebViewClient.onReceivedIcon is called. 2811 * @return The favicon for the current page. 2812 */ 2813 public Bitmap getFavicon() { 2814 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2815 return h != null ? h.getFavicon() : null; 2816 } 2817 2818 /** 2819 * Get the touch icon url for the apple-touch-icon <link> element, or 2820 * a URL on this site's server pointing to the standard location of a 2821 * touch icon. 2822 * @hide 2823 */ 2824 public String getTouchIconUrl() { 2825 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2826 return h != null ? h.getTouchIconUrl() : null; 2827 } 2828 2829 /** 2830 * Get the progress for the current page. 2831 * @return The progress for the current page between 0 and 100. 2832 */ 2833 public int getProgress() { 2834 return mCallbackProxy.getProgress(); 2835 } 2836 2837 /** 2838 * @return the height of the HTML content. 2839 */ 2840 public int getContentHeight() { 2841 return mContentHeight; 2842 } 2843 2844 /** 2845 * @return the width of the HTML content. 2846 * @hide 2847 */ 2848 public int getContentWidth() { 2849 return mContentWidth; 2850 } 2851 2852 /** 2853 * Pause all layout, parsing, and JavaScript timers for all webviews. This 2854 * is a global requests, not restricted to just this webview. This can be 2855 * useful if the application has been paused. 2856 */ 2857 public void pauseTimers() { 2858 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2859 } 2860 2861 /** 2862 * Resume all layout, parsing, and JavaScript timers for all webviews. 2863 * This will resume dispatching all timers. 2864 */ 2865 public void resumeTimers() { 2866 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2867 } 2868 2869 /** 2870 * Call this to pause any extra processing associated with this WebView and 2871 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 2872 * is taken offscreen, this could be called to reduce unnecessary CPU or 2873 * network traffic. When the WebView is again "active", call onResume(). 2874 * 2875 * Note that this differs from pauseTimers(), which affects all WebViews. 2876 */ 2877 public void onPause() { 2878 if (!mIsPaused) { 2879 mIsPaused = true; 2880 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2881 } 2882 } 2883 2884 /** 2885 * Call this to resume a WebView after a previous call to onPause(). 2886 */ 2887 public void onResume() { 2888 if (mIsPaused) { 2889 mIsPaused = false; 2890 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2891 } 2892 } 2893 2894 /** 2895 * Returns true if the view is paused, meaning onPause() was called. Calling 2896 * onResume() sets the paused state back to false. 2897 * @hide 2898 */ 2899 public boolean isPaused() { 2900 return mIsPaused; 2901 } 2902 2903 /** 2904 * Call this to inform the view that memory is low so that it can 2905 * free any available memory. 2906 */ 2907 public void freeMemory() { 2908 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2909 } 2910 2911 /** 2912 * Clear the resource cache. Note that the cache is per-application, so 2913 * this will clear the cache for all WebViews used. 2914 * 2915 * @param includeDiskFiles If false, only the RAM cache is cleared. 2916 */ 2917 public void clearCache(boolean includeDiskFiles) { 2918 // Note: this really needs to be a static method as it clears cache for all 2919 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2920 // we can't make this static. 2921 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2922 includeDiskFiles ? 1 : 0, 0); 2923 } 2924 2925 /** 2926 * Make sure that clearing the form data removes the adapter from the 2927 * currently focused textfield if there is one. 2928 */ 2929 public void clearFormData() { 2930 if (inEditingMode()) { 2931 AutoCompleteAdapter adapter = null; 2932 mWebTextView.setAdapterCustom(adapter); 2933 } 2934 } 2935 2936 /** 2937 * Tell the WebView to clear its internal back/forward list. 2938 */ 2939 public void clearHistory() { 2940 mCallbackProxy.getBackForwardList().setClearPending(); 2941 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2942 } 2943 2944 /** 2945 * Clear the SSL preferences table stored in response to proceeding with SSL 2946 * certificate errors. 2947 */ 2948 public void clearSslPreferences() { 2949 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2950 } 2951 2952 /** 2953 * Return the WebBackForwardList for this WebView. This contains the 2954 * back/forward list for use in querying each item in the history stack. 2955 * This is a copy of the private WebBackForwardList so it contains only a 2956 * snapshot of the current state. Multiple calls to this method may return 2957 * different objects. The object returned from this method will not be 2958 * updated to reflect any new state. 2959 */ 2960 public WebBackForwardList copyBackForwardList() { 2961 return mCallbackProxy.getBackForwardList().clone(); 2962 } 2963 2964 /* 2965 * Highlight and scroll to the next occurance of String in findAll. 2966 * Wraps the page infinitely, and scrolls. Must be called after 2967 * calling findAll. 2968 * 2969 * @param forward Direction to search. 2970 */ 2971 public void findNext(boolean forward) { 2972 if (0 == mNativeClass) return; // client isn't initialized 2973 nativeFindNext(forward); 2974 } 2975 2976 /* 2977 * Find all instances of find on the page and highlight them. 2978 * @param find String to find. 2979 * @return int The number of occurances of the String "find" 2980 * that were found. 2981 */ 2982 public int findAll(String find) { 2983 if (0 == mNativeClass) return 0; // client isn't initialized 2984 int result = find != null ? nativeFindAll(find.toLowerCase(), 2985 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 2986 invalidate(); 2987 mLastFind = find; 2988 return result; 2989 } 2990 2991 /** 2992 * Start an ActionMode for finding text in this WebView. 2993 * @param text If non-null, will be the initial text to search for. 2994 * Otherwise, the last String searched for in this WebView will 2995 * be used to start. 2996 * @param showIme If true, show the IME, assuming the user will begin typing. 2997 * If false and text is non-null, perform a find all. 2998 * @return boolean True if the find dialog is shown, false otherwise. 2999 */ 3000 public boolean showFindDialog(String text, boolean showIme) { 3001 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3002 if (startActionMode(callback) == null) { 3003 // Could not start the action mode, so end Find on page 3004 return false; 3005 } 3006 mFindCallback = callback; 3007 setFindIsUp(true); 3008 mFindCallback.setWebView(this); 3009 if (showIme) { 3010 mFindCallback.showSoftInput(); 3011 } else if (text != null) { 3012 mFindCallback.setText(text); 3013 mFindCallback.findAll(); 3014 return true; 3015 } 3016 if (text == null) { 3017 text = mLastFind; 3018 } 3019 if (text != null) { 3020 mFindCallback.setText(text); 3021 } 3022 return true; 3023 } 3024 3025 /** 3026 * Keep track of the find callback so that we can remove its titlebar if 3027 * necessary. 3028 */ 3029 private FindActionModeCallback mFindCallback; 3030 3031 /** 3032 * Toggle whether the find dialog is showing, for both native and Java. 3033 */ 3034 private void setFindIsUp(boolean isUp) { 3035 mFindIsUp = isUp; 3036 if (0 == mNativeClass) return; // client isn't initialized 3037 nativeSetFindIsUp(isUp); 3038 } 3039 3040 /** 3041 * Return the index of the currently highlighted match. 3042 */ 3043 int findIndex() { 3044 if (0 == mNativeClass) return -1; 3045 return nativeFindIndex(); 3046 } 3047 3048 // Used to know whether the find dialog is open. Affects whether 3049 // or not we draw the highlights for matches. 3050 private boolean mFindIsUp; 3051 3052 // Keep track of the last string sent, so we can search again when find is 3053 // reopened. 3054 private String mLastFind; 3055 3056 /** 3057 * Return the first substring consisting of the address of a physical 3058 * location. Currently, only addresses in the United States are detected, 3059 * and consist of: 3060 * - a house number 3061 * - a street name 3062 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3063 * - a city name 3064 * - a state or territory, either spelled out or two-letter abbr. 3065 * - an optional 5 digit or 9 digit zip code. 3066 * 3067 * All names must be correctly capitalized, and the zip code, if present, 3068 * must be valid for the state. The street type must be a standard USPS 3069 * spelling or abbreviation. The state or territory must also be spelled 3070 * or abbreviated using USPS standards. The house number may not exceed 3071 * five digits. 3072 * @param addr The string to search for addresses. 3073 * 3074 * @return the address, or if no address is found, return null. 3075 */ 3076 public static String findAddress(String addr) { 3077 return findAddress(addr, false); 3078 } 3079 3080 /** 3081 * @hide 3082 * Return the first substring consisting of the address of a physical 3083 * location. Currently, only addresses in the United States are detected, 3084 * and consist of: 3085 * - a house number 3086 * - a street name 3087 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3088 * - a city name 3089 * - a state or territory, either spelled out or two-letter abbr. 3090 * - an optional 5 digit or 9 digit zip code. 3091 * 3092 * Names are optionally capitalized, and the zip code, if present, 3093 * must be valid for the state. The street type must be a standard USPS 3094 * spelling or abbreviation. The state or territory must also be spelled 3095 * or abbreviated using USPS standards. The house number may not exceed 3096 * five digits. 3097 * @param addr The string to search for addresses. 3098 * @param caseInsensitive addr Set to true to make search ignore case. 3099 * 3100 * @return the address, or if no address is found, return null. 3101 */ 3102 public static String findAddress(String addr, boolean caseInsensitive) { 3103 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3104 } 3105 3106 /* 3107 * Clear the highlighting surrounding text matches created by findAll. 3108 */ 3109 public void clearMatches() { 3110 if (mNativeClass == 0) 3111 return; 3112 nativeSetFindIsEmpty(); 3113 invalidate(); 3114 } 3115 3116 /** 3117 * Called when the find ActionMode ends. 3118 */ 3119 void notifyFindDialogDismissed() { 3120 mFindCallback = null; 3121 if (mWebViewCore == null) { 3122 return; 3123 } 3124 clearMatches(); 3125 setFindIsUp(false); 3126 // Now that the dialog has been removed, ensure that we scroll to a 3127 // location that is not beyond the end of the page. 3128 pinScrollTo(mScrollX, mScrollY, false, 0); 3129 invalidate(); 3130 } 3131 3132 /** 3133 * Query the document to see if it contains any image references. The 3134 * message object will be dispatched with arg1 being set to 1 if images 3135 * were found and 0 if the document does not reference any images. 3136 * @param response The message that will be dispatched with the result. 3137 */ 3138 public void documentHasImages(Message response) { 3139 if (response == null) { 3140 return; 3141 } 3142 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3143 } 3144 3145 /** 3146 * Request the scroller to abort any ongoing animation 3147 * 3148 * @hide 3149 */ 3150 public void stopScroll() { 3151 mScroller.forceFinished(true); 3152 mLastVelocity = 0; 3153 } 3154 3155 @Override 3156 public void computeScroll() { 3157 if (mScroller.computeScrollOffset()) { 3158 int oldX = mScrollX; 3159 int oldY = mScrollY; 3160 int x = mScroller.getCurrX(); 3161 int y = mScroller.getCurrY(); 3162 invalidate(); // So we draw again 3163 3164 if (!mScroller.isFinished()) { 3165 int rangeX = computeMaxScrollX(); 3166 int rangeY = computeMaxScrollY(); 3167 int overflingDistance = mOverflingDistance; 3168 3169 // Use the layer's scroll data if needed. 3170 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3171 oldX = mScrollingLayerRect.left; 3172 oldY = mScrollingLayerRect.top; 3173 rangeX = mScrollingLayerRect.right; 3174 rangeY = mScrollingLayerRect.bottom; 3175 // No overscrolling for layers. 3176 overflingDistance = 0; 3177 } 3178 3179 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3180 rangeX, rangeY, 3181 overflingDistance, overflingDistance, false); 3182 3183 if (mOverScrollGlow != null) { 3184 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3185 } 3186 } else { 3187 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3188 mScrollX = x; 3189 mScrollY = y; 3190 } else { 3191 // Update the layer position instead of WebView. 3192 nativeScrollLayer(mScrollingLayer, x, y); 3193 mScrollingLayerRect.left = x; 3194 mScrollingLayerRect.top = y; 3195 } 3196 abortAnimation(); 3197 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3198 WebViewCore.resumePriority(); 3199 if (!mSelectingText) { 3200 WebViewCore.resumeUpdatePicture(mWebViewCore); 3201 } 3202 if (oldX != mScrollX || oldY != mScrollY) { 3203 sendOurVisibleRect(); 3204 } 3205 } 3206 } else { 3207 super.computeScroll(); 3208 } 3209 } 3210 3211 private static int computeDuration(int dx, int dy) { 3212 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3213 int duration = distance * 1000 / STD_SPEED; 3214 return Math.min(duration, MAX_DURATION); 3215 } 3216 3217 // helper to pin the scrollBy parameters (already in view coordinates) 3218 // returns true if the scroll was changed 3219 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3220 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3221 } 3222 // helper to pin the scrollTo parameters (already in view coordinates) 3223 // returns true if the scroll was changed 3224 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3225 x = pinLocX(x); 3226 y = pinLocY(y); 3227 int dx = x - mScrollX; 3228 int dy = y - mScrollY; 3229 3230 if ((dx | dy) == 0) { 3231 return false; 3232 } 3233 abortAnimation(); 3234 if (animate) { 3235 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3236 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3237 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3238 awakenScrollBars(mScroller.getDuration()); 3239 invalidate(); 3240 } else { 3241 scrollTo(x, y); 3242 } 3243 return true; 3244 } 3245 3246 // Scale from content to view coordinates, and pin. 3247 // Also called by jni webview.cpp 3248 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3249 if (mDrawHistory) { 3250 // disallow WebView to change the scroll position as History Picture 3251 // is used in the view system. 3252 // TODO: as we switchOutDrawHistory when trackball or navigation 3253 // keys are hit, this should be safe. Right? 3254 return false; 3255 } 3256 cx = contentToViewDimension(cx); 3257 cy = contentToViewDimension(cy); 3258 if (mHeightCanMeasure) { 3259 // move our visible rect according to scroll request 3260 if (cy != 0) { 3261 Rect tempRect = new Rect(); 3262 calcOurVisibleRect(tempRect); 3263 tempRect.offset(cx, cy); 3264 requestRectangleOnScreen(tempRect); 3265 } 3266 // FIXME: We scroll horizontally no matter what because currently 3267 // ScrollView and ListView will not scroll horizontally. 3268 // FIXME: Why do we only scroll horizontally if there is no 3269 // vertical scroll? 3270// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3271 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3272 } else { 3273 return pinScrollBy(cx, cy, animate, 0); 3274 } 3275 } 3276 3277 /** 3278 * Called by CallbackProxy when the page starts loading. 3279 * @param url The URL of the page which has started loading. 3280 */ 3281 /* package */ void onPageStarted(String url) { 3282 // every time we start a new page, we want to reset the 3283 // WebView certificate: if the new site is secure, we 3284 // will reload it and get a new certificate set; 3285 // if the new site is not secure, the certificate must be 3286 // null, and that will be the case 3287 setCertificate(null); 3288 3289 // reset the flag since we set to true in if need after 3290 // loading is see onPageFinished(Url) 3291 mAccessibilityScriptInjected = false; 3292 } 3293 3294 /** 3295 * Called by CallbackProxy when the page finishes loading. 3296 * @param url The URL of the page which has finished loading. 3297 */ 3298 /* package */ void onPageFinished(String url) { 3299 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3300 // If the user is now on a different page, or has scrolled the page 3301 // past the point where the title bar is offscreen, ignore the 3302 // scroll request. 3303 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3304 && mScrollX == 0 && mScrollY == 0) { 3305 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3306 SLIDE_TITLE_DURATION); 3307 } 3308 mPageThatNeedsToSlideTitleBarOffScreen = null; 3309 } 3310 mZoomManager.onPageFinished(url); 3311 injectAccessibilityForUrl(url); 3312 } 3313 3314 /** 3315 * This method injects accessibility in the loaded document if accessibility 3316 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3317 * If no URL specific script is found or JavaScript is disabled we fallback to 3318 * the default {@link AccessibilityInjector} implementation. 3319 * </p> 3320 * If the URL has the "axs" paramter set to 1 it has already done the 3321 * script injection so we do nothing. If the parameter is set to 0 3322 * the URL opts out accessibility script injection so we fall back to 3323 * the default {@link AccessibilityInjector}. 3324 * </p> 3325 * Note: If the user has not opted-in the accessibility script injection no scripts 3326 * are injected rather the default {@link AccessibilityInjector} implementation 3327 * is used. 3328 * 3329 * @param url The URL loaded by this {@link WebView}. 3330 */ 3331 private void injectAccessibilityForUrl(String url) { 3332 if (mWebViewCore == null) { 3333 return; 3334 } 3335 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3336 3337 if (!accessibilityManager.isEnabled()) { 3338 // it is possible that accessibility was turned off between reloads 3339 ensureAccessibilityScriptInjectorInstance(false); 3340 return; 3341 } 3342 3343 if (!getSettings().getJavaScriptEnabled()) { 3344 // no JS so we fallback to the basic buil-in support 3345 ensureAccessibilityScriptInjectorInstance(true); 3346 return; 3347 } 3348 3349 // check the URL "axs" parameter to choose appropriate action 3350 int axsParameterValue = getAxsUrlParameterValue(url); 3351 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3352 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3353 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3354 if (onDeviceScriptInjectionEnabled) { 3355 ensureAccessibilityScriptInjectorInstance(false); 3356 // neither script injected nor script injection opted out => we inject 3357 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3358 // TODO: Set this flag after successfull script injection. Maybe upon injection 3359 // the chooser should update the meta tag and we check it to declare success 3360 mAccessibilityScriptInjected = true; 3361 } else { 3362 // injection disabled so we fallback to the basic built-in support 3363 ensureAccessibilityScriptInjectorInstance(true); 3364 } 3365 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3366 // injection opted out so we fallback to the basic buil-in support 3367 ensureAccessibilityScriptInjectorInstance(true); 3368 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3369 ensureAccessibilityScriptInjectorInstance(false); 3370 // the URL provides accessibility but we still need to add our generic script 3371 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3372 } else { 3373 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3374 } 3375 } 3376 3377 /** 3378 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3379 * 3380 * @param present True to ensure an insance, false to ensure no instance. 3381 */ 3382 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3383 if (present) { 3384 if (mAccessibilityInjector == null) { 3385 mAccessibilityInjector = new AccessibilityInjector(this); 3386 } 3387 } else { 3388 mAccessibilityInjector = null; 3389 } 3390 } 3391 3392 /** 3393 * Gets the "axs" URL parameter value. 3394 * 3395 * @param url A url to fetch the paramter from. 3396 * @return The parameter value if such, -1 otherwise. 3397 */ 3398 private int getAxsUrlParameterValue(String url) { 3399 if (mMatchAxsUrlParameterPattern == null) { 3400 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3401 } 3402 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3403 if (matcher.find()) { 3404 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3405 return Integer.parseInt(keyValuePair.split("=")[1]); 3406 } 3407 return -1; 3408 } 3409 3410 /** 3411 * The URL of a page that sent a message to scroll the title bar off screen. 3412 * 3413 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3414 * title bar off the screen. Sometimes, the scroll position is set before 3415 * the page finishes loading. Rather than scrolling while the page is still 3416 * loading, keep track of the URL and new scroll position so we can perform 3417 * the scroll once the page finishes loading. 3418 */ 3419 private String mPageThatNeedsToSlideTitleBarOffScreen; 3420 3421 /** 3422 * The destination Y scroll position to be used when the page finishes 3423 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3424 */ 3425 private int mYDistanceToSlideTitleOffScreen; 3426 3427 // scale from content to view coordinates, and pin 3428 // return true if pin caused the final x/y different than the request cx/cy, 3429 // and a future scroll may reach the request cx/cy after our size has 3430 // changed 3431 // return false if the view scroll to the exact position as it is requested, 3432 // where negative numbers are taken to mean 0 3433 private boolean setContentScrollTo(int cx, int cy) { 3434 if (mDrawHistory) { 3435 // disallow WebView to change the scroll position as History Picture 3436 // is used in the view system. 3437 // One known case where this is called is that WebCore tries to 3438 // restore the scroll position. As history Picture already uses the 3439 // saved scroll position, it is ok to skip this. 3440 return false; 3441 } 3442 int vx; 3443 int vy; 3444 if ((cx | cy) == 0) { 3445 // If the page is being scrolled to (0,0), do not add in the title 3446 // bar's height, and simply scroll to (0,0). (The only other work 3447 // in contentToView_ is to multiply, so this would not change 0.) 3448 vx = 0; 3449 vy = 0; 3450 } else { 3451 vx = contentToViewX(cx); 3452 vy = contentToViewY(cy); 3453 } 3454// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3455// vx + " " + vy + "]"); 3456 // Some mobile sites attempt to scroll the title bar off the page by 3457 // scrolling to (0,1). If we are at the top left corner of the 3458 // page, assume this is an attempt to scroll off the title bar, and 3459 // animate the title bar off screen slowly enough that the user can see 3460 // it. 3461 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3462 && mTitleBar != null) { 3463 // FIXME: 100 should be defined somewhere as our max progress. 3464 if (getProgress() < 100) { 3465 // Wait to scroll the title bar off screen until the page has 3466 // finished loading. Keep track of the URL and the destination 3467 // Y position 3468 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3469 mYDistanceToSlideTitleOffScreen = vy; 3470 } else { 3471 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3472 } 3473 // Since we are animating, we have not yet reached the desired 3474 // scroll position. Do not return true to request another attempt 3475 return false; 3476 } 3477 pinScrollTo(vx, vy, false, 0); 3478 // If the request was to scroll to a negative coordinate, treat it as if 3479 // it was a request to scroll to 0 3480 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3481 return true; 3482 } else { 3483 return false; 3484 } 3485 } 3486 3487 // scale from content to view coordinates, and pin 3488 private void spawnContentScrollTo(int cx, int cy) { 3489 if (mDrawHistory) { 3490 // disallow WebView to change the scroll position as History Picture 3491 // is used in the view system. 3492 return; 3493 } 3494 int vx = contentToViewX(cx); 3495 int vy = contentToViewY(cy); 3496 pinScrollTo(vx, vy, true, 0); 3497 } 3498 3499 /** 3500 * These are from webkit, and are in content coordinate system (unzoomed) 3501 */ 3502 private void contentSizeChanged(boolean updateLayout) { 3503 // suppress 0,0 since we usually see real dimensions soon after 3504 // this avoids drawing the prev content in a funny place. If we find a 3505 // way to consolidate these notifications, this check may become 3506 // obsolete 3507 if ((mContentWidth | mContentHeight) == 0) { 3508 return; 3509 } 3510 3511 if (mHeightCanMeasure) { 3512 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3513 || updateLayout) { 3514 requestLayout(); 3515 } 3516 } else if (mWidthCanMeasure) { 3517 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3518 || updateLayout) { 3519 requestLayout(); 3520 } 3521 } else { 3522 // If we don't request a layout, try to send our view size to the 3523 // native side to ensure that WebCore has the correct dimensions. 3524 sendViewSizeZoom(false); 3525 } 3526 } 3527 3528 /** 3529 * Set the WebViewClient that will receive various notifications and 3530 * requests. This will replace the current handler. 3531 * @param client An implementation of WebViewClient. 3532 */ 3533 public void setWebViewClient(WebViewClient client) { 3534 mCallbackProxy.setWebViewClient(client); 3535 } 3536 3537 /** 3538 * Gets the WebViewClient 3539 * @return the current WebViewClient instance. 3540 * 3541 *@hide pending API council approval. 3542 */ 3543 public WebViewClient getWebViewClient() { 3544 return mCallbackProxy.getWebViewClient(); 3545 } 3546 3547 /** 3548 * Register the interface to be used when content can not be handled by 3549 * the rendering engine, and should be downloaded instead. This will replace 3550 * the current handler. 3551 * @param listener An implementation of DownloadListener. 3552 */ 3553 public void setDownloadListener(DownloadListener listener) { 3554 mCallbackProxy.setDownloadListener(listener); 3555 } 3556 3557 /** 3558 * Set the chrome handler. This is an implementation of WebChromeClient for 3559 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3560 * This will replace the current handler. 3561 * @param client An implementation of WebChromeClient. 3562 */ 3563 public void setWebChromeClient(WebChromeClient client) { 3564 mCallbackProxy.setWebChromeClient(client); 3565 } 3566 3567 /** 3568 * Gets the chrome handler. 3569 * @return the current WebChromeClient instance. 3570 * 3571 * @hide API council approval. 3572 */ 3573 public WebChromeClient getWebChromeClient() { 3574 return mCallbackProxy.getWebChromeClient(); 3575 } 3576 3577 /** 3578 * Set the back/forward list client. This is an implementation of 3579 * WebBackForwardListClient for handling new items and changes in the 3580 * history index. 3581 * @param client An implementation of WebBackForwardListClient. 3582 * {@hide} 3583 */ 3584 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3585 mCallbackProxy.setWebBackForwardListClient(client); 3586 } 3587 3588 /** 3589 * Gets the WebBackForwardListClient. 3590 * {@hide} 3591 */ 3592 public WebBackForwardListClient getWebBackForwardListClient() { 3593 return mCallbackProxy.getWebBackForwardListClient(); 3594 } 3595 3596 /** 3597 * Set the Picture listener. This is an interface used to receive 3598 * notifications of a new Picture. 3599 * @param listener An implementation of WebView.PictureListener. 3600 */ 3601 public void setPictureListener(PictureListener listener) { 3602 mPictureListener = listener; 3603 } 3604 3605 /** 3606 * {@hide} 3607 */ 3608 /* FIXME: Debug only! Remove for SDK! */ 3609 public void externalRepresentation(Message callback) { 3610 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3611 } 3612 3613 /** 3614 * {@hide} 3615 */ 3616 /* FIXME: Debug only! Remove for SDK! */ 3617 public void documentAsText(Message callback) { 3618 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3619 } 3620 3621 /** 3622 * Use this function to bind an object to JavaScript so that the 3623 * methods can be accessed from JavaScript. 3624 * <p><strong>IMPORTANT:</strong> 3625 * <ul> 3626 * <li> Using addJavascriptInterface() allows JavaScript to control your 3627 * application. This can be a very useful feature or a dangerous security 3628 * issue. When the HTML in the WebView is untrustworthy (for example, part 3629 * or all of the HTML is provided by some person or process), then an 3630 * attacker could inject HTML that will execute your code and possibly any 3631 * code of the attacker's choosing.<br> 3632 * Do not use addJavascriptInterface() unless all of the HTML in this 3633 * WebView was written by you.</li> 3634 * <li> The Java object that is bound runs in another thread and not in 3635 * the thread that it was constructed in.</li> 3636 * </ul></p> 3637 * @param obj The class instance to bind to JavaScript, null instances are 3638 * ignored. 3639 * @param interfaceName The name to used to expose the instance in 3640 * JavaScript. 3641 */ 3642 public void addJavascriptInterface(Object obj, String interfaceName) { 3643 if (obj == null) { 3644 return; 3645 } 3646 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3647 arg.mObject = obj; 3648 arg.mInterfaceName = interfaceName; 3649 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3650 } 3651 3652 /** 3653 * Removes a previously added JavaScript interface with the given name. 3654 * @param interfaceName The name of the interface to remove. 3655 */ 3656 public void removeJavascriptInterface(String interfaceName) { 3657 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3658 arg.mInterfaceName = interfaceName; 3659 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3660 } 3661 3662 /** 3663 * Return the WebSettings object used to control the settings for this 3664 * WebView. 3665 * @return A WebSettings object that can be used to control this WebView's 3666 * settings. 3667 */ 3668 public WebSettings getSettings() { 3669 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3670 } 3671 3672 /** 3673 * Return the list of currently loaded plugins. 3674 * @return The list of currently loaded plugins. 3675 * 3676 * @hide 3677 * @deprecated This was used for Gears, which has been deprecated. 3678 */ 3679 @Deprecated 3680 public static synchronized PluginList getPluginList() { 3681 return new PluginList(); 3682 } 3683 3684 /** 3685 * @hide 3686 * @deprecated This was used for Gears, which has been deprecated. 3687 */ 3688 @Deprecated 3689 public void refreshPlugins(boolean reloadOpenPages) { } 3690 3691 //------------------------------------------------------------------------- 3692 // Override View methods 3693 //------------------------------------------------------------------------- 3694 3695 @Override 3696 protected void finalize() throws Throwable { 3697 try { 3698 destroy(); 3699 } finally { 3700 super.finalize(); 3701 } 3702 } 3703 3704 @Override 3705 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3706 if (child == mTitleBar) { 3707 // When drawing the title bar, move it horizontally to always show 3708 // at the top of the WebView. 3709 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3710 int newTop = 0; 3711 if (mTitleGravity == Gravity.NO_GRAVITY) { 3712 newTop = Math.min(0, mScrollY); 3713 } else if (mTitleGravity == Gravity.TOP) { 3714 newTop = mScrollY; 3715 } 3716 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 3717 mTitleBar.setTop(newTop); 3718 } 3719 return super.drawChild(canvas, child, drawingTime); 3720 } 3721 3722 private void drawContent(Canvas canvas) { 3723 // Update the buttons in the picture, so when we draw the picture 3724 // to the screen, they are in the correct state. 3725 // Tell the native side if user is a) touching the screen, 3726 // b) pressing the trackball down, or c) pressing the enter key 3727 // If the cursor is on a button, we need to draw it in the pressed 3728 // state. 3729 // If mNativeClass is 0, we should not reach here, so we do not 3730 // need to check it again. 3731 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3732 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3733 || mTrackballDown || mGotCenterDown, false); 3734 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3735 } 3736 3737 /** 3738 * Draw the background when beyond bounds 3739 * @param canvas Canvas to draw into 3740 */ 3741 private void drawOverScrollBackground(Canvas canvas) { 3742 if (mOverScrollBackground == null) { 3743 mOverScrollBackground = new Paint(); 3744 Bitmap bm = BitmapFactory.decodeResource( 3745 mContext.getResources(), 3746 com.android.internal.R.drawable.status_bar_background); 3747 mOverScrollBackground.setShader(new BitmapShader(bm, 3748 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3749 mOverScrollBorder = new Paint(); 3750 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3751 mOverScrollBorder.setStrokeWidth(0); 3752 mOverScrollBorder.setColor(0xffbbbbbb); 3753 } 3754 3755 int top = 0; 3756 int right = computeRealHorizontalScrollRange(); 3757 int bottom = top + computeRealVerticalScrollRange(); 3758 // first draw the background and anchor to the top of the view 3759 canvas.save(); 3760 canvas.translate(mScrollX, mScrollY); 3761 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3762 - mScrollY, Region.Op.DIFFERENCE); 3763 canvas.drawPaint(mOverScrollBackground); 3764 canvas.restore(); 3765 // then draw the border 3766 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3767 // next clip the region for the content 3768 canvas.clipRect(0, top, right, bottom); 3769 } 3770 3771 @Override 3772 protected void onDraw(Canvas canvas) { 3773 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3774 if (mNativeClass == 0) { 3775 return; 3776 } 3777 3778 // if both mContentWidth and mContentHeight are 0, it means there is no 3779 // valid Picture passed to WebView yet. This can happen when WebView 3780 // just starts. Draw the background and return. 3781 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3782 canvas.drawColor(mBackgroundColor); 3783 return; 3784 } 3785 3786 if (canvas.isHardwareAccelerated()) { 3787 mZoomManager.setHardwareAccelerated(); 3788 } 3789 3790 int saveCount = canvas.save(); 3791 if (mInOverScrollMode && !getSettings() 3792 .getUseWebViewBackgroundForOverscrollBackground()) { 3793 drawOverScrollBackground(canvas); 3794 } 3795 if (mTitleBar != null) { 3796 canvas.translate(0, getTitleHeight()); 3797 } 3798 drawContent(canvas); 3799 canvas.restoreToCount(saveCount); 3800 3801 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3802 invalidate(); 3803 } 3804 if (inEditingMode()) { 3805 mWebTextView.onDrawSubstitute(); 3806 } 3807 mWebViewCore.signalRepaintDone(); 3808 3809 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3810 invalidate(); 3811 } 3812 3813 // paint the highlight in the end 3814 if (!mTouchHighlightRegion.isEmpty()) { 3815 if (mTouchHightlightPaint == null) { 3816 mTouchHightlightPaint = new Paint(); 3817 mTouchHightlightPaint.setColor(mHightlightColor); 3818 mTouchHightlightPaint.setAntiAlias(true); 3819 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3820 TOUCH_HIGHLIGHT_ARC)); 3821 } 3822 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3823 mTouchHightlightPaint); 3824 } 3825 if (DEBUG_TOUCH_HIGHLIGHT) { 3826 if (getSettings().getNavDump()) { 3827 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3828 if (mTouchCrossHairColor == null) { 3829 mTouchCrossHairColor = new Paint(); 3830 mTouchCrossHairColor.setColor(Color.RED); 3831 } 3832 canvas.drawLine(mTouchHighlightX - mNavSlop, 3833 mTouchHighlightY - mNavSlop, mTouchHighlightX 3834 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3835 + 1, mTouchCrossHairColor); 3836 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3837 mTouchHighlightY - mNavSlop, mTouchHighlightX 3838 - mNavSlop, 3839 mTouchHighlightY + mNavSlop + 1, 3840 mTouchCrossHairColor); 3841 } 3842 } 3843 } 3844 } 3845 3846 private void removeTouchHighlight(boolean removePendingMessage) { 3847 if (removePendingMessage) { 3848 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3849 } 3850 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3851 } 3852 3853 @Override 3854 public void setLayoutParams(ViewGroup.LayoutParams params) { 3855 if (params.height == LayoutParams.WRAP_CONTENT) { 3856 mWrapContent = true; 3857 } 3858 super.setLayoutParams(params); 3859 } 3860 3861 @Override 3862 public boolean performLongClick() { 3863 // performLongClick() is the result of a delayed message. If we switch 3864 // to windows overview, the WebView will be temporarily removed from the 3865 // view system. In that case, do nothing. 3866 if (getParent() == null) return false; 3867 3868 // A multi-finger gesture can look like a long press; make sure we don't take 3869 // long press actions if we're scaling. 3870 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3871 if (detector != null && detector.isInProgress()) { 3872 return false; 3873 } 3874 3875 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3876 // Send the click so that the textfield is in focus 3877 centerKeyPressOnTextField(); 3878 rebuildWebTextView(); 3879 } else { 3880 clearTextEntry(); 3881 } 3882 if (inEditingMode()) { 3883 // Since we just called rebuildWebTextView, the layout is not set 3884 // properly. Update it so it can correctly find the word to select. 3885 mWebTextView.ensureLayout(); 3886 // Provide a touch down event to WebTextView, which will allow it 3887 // to store the location to use in performLongClick. 3888 AbsoluteLayout.LayoutParams params 3889 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 3890 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 3891 mLastTouchTime, MotionEvent.ACTION_DOWN, 3892 mLastTouchX - params.x + mScrollX, 3893 mLastTouchY - params.y + mScrollY, 0); 3894 mWebTextView.dispatchTouchEvent(fake); 3895 return mWebTextView.performLongClick(); 3896 } 3897 if (mSelectingText) return false; // long click does nothing on selection 3898 /* if long click brings up a context menu, the super function 3899 * returns true and we're done. Otherwise, nothing happened when 3900 * the user clicked. */ 3901 if (super.performLongClick()) { 3902 return true; 3903 } 3904 /* In the case where the application hasn't already handled the long 3905 * click action, look for a word under the click. If one is found, 3906 * animate the text selection into view. 3907 * FIXME: no animation code yet */ 3908 return selectText(); 3909 } 3910 3911 /** 3912 * Select the word at the last click point. 3913 * 3914 * @hide pending API council approval 3915 */ 3916 public boolean selectText() { 3917 int x = viewToContentX(mLastTouchX + mScrollX); 3918 int y = viewToContentY(mLastTouchY + mScrollY); 3919 return selectText(x, y); 3920 } 3921 3922 /** 3923 * Select the word at the indicated content coordinates. 3924 */ 3925 boolean selectText(int x, int y) { 3926 if (!setUpSelect(true, x, y)) { 3927 return false; 3928 } 3929 nativeSetExtendSelection(); 3930 mDrawSelectionPointer = false; 3931 mSelectionStarted = true; 3932 mTouchMode = TOUCH_DRAG_MODE; 3933 return true; 3934 } 3935 3936 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3937 3938 @Override 3939 protected void onConfigurationChanged(Configuration newConfig) { 3940 if (mSelectingText && mOrientation != newConfig.orientation) { 3941 selectionDone(); 3942 } 3943 mOrientation = newConfig.orientation; 3944 } 3945 3946 /** 3947 * Keep track of the Callback so we can end its ActionMode or remove its 3948 * titlebar. 3949 */ 3950 private SelectActionModeCallback mSelectCallback; 3951 3952 // These values are possible options for didUpdateWebTextViewDimensions. 3953 private static final int FULLY_ON_SCREEN = 0; 3954 private static final int INTERSECTS_SCREEN = 1; 3955 private static final int ANYWHERE = 2; 3956 3957 /** 3958 * Check to see if the focused textfield/textarea is still on screen. If it 3959 * is, update the the dimensions and location of WebTextView. Otherwise, 3960 * remove the WebTextView. Should be called when the zoom level changes. 3961 * @param intersection How to determine whether the textfield/textarea is 3962 * still on screen. 3963 * @return boolean True if the textfield/textarea is still on screen and the 3964 * dimensions/location of WebTextView have been updated. 3965 */ 3966 private boolean didUpdateWebTextViewDimensions(int intersection) { 3967 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3968 Rect vBox = contentToViewRect(contentBounds); 3969 Rect visibleRect = new Rect(); 3970 calcOurVisibleRect(visibleRect); 3971 // If the textfield is on screen, place the WebTextView in 3972 // its new place, accounting for our new scroll/zoom values, 3973 // and adjust its textsize. 3974 boolean onScreen; 3975 switch (intersection) { 3976 case FULLY_ON_SCREEN: 3977 onScreen = visibleRect.contains(vBox); 3978 break; 3979 case INTERSECTS_SCREEN: 3980 onScreen = Rect.intersects(visibleRect, vBox); 3981 break; 3982 case ANYWHERE: 3983 onScreen = true; 3984 break; 3985 default: 3986 throw new AssertionError( 3987 "invalid parameter passed to didUpdateWebTextViewDimensions"); 3988 } 3989 if (onScreen) { 3990 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3991 vBox.height()); 3992 mWebTextView.updateTextSize(); 3993 updateWebTextViewPadding(); 3994 return true; 3995 } else { 3996 // The textfield is now off screen. The user probably 3997 // was not zooming to see the textfield better. Remove 3998 // the WebTextView. If the user types a key, and the 3999 // textfield is still in focus, we will reconstruct 4000 // the WebTextView and scroll it back on screen. 4001 mWebTextView.remove(); 4002 return false; 4003 } 4004 } 4005 4006 void setBaseLayer(int layer, Rect invalRect, boolean showVisualIndciator) { 4007 if (mNativeClass == 0) 4008 return; 4009 if (invalRect == null) { 4010 Rect rect = new Rect(0, 0, mContentWidth, mContentHeight); 4011 nativeSetBaseLayer(layer, rect, showVisualIndciator); 4012 } else { 4013 nativeSetBaseLayer(layer, invalRect, showVisualIndciator); 4014 } 4015 } 4016 4017 private void onZoomAnimationStart() { 4018 // If it is in password mode, turn it off so it does not draw misplaced. 4019 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4020 mWebTextView.setInPassword(false); 4021 } 4022 } 4023 4024 private void onZoomAnimationEnd() { 4025 // adjust the edit text view if needed 4026 if (inEditingMode() && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN) 4027 && nativeFocusCandidateIsPassword()) { 4028 // If it is a password field, start drawing the WebTextView once 4029 // again. 4030 mWebTextView.setInPassword(true); 4031 } 4032 } 4033 4034 void onFixedLengthZoomAnimationStart() { 4035 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4036 onZoomAnimationStart(); 4037 } 4038 4039 void onFixedLengthZoomAnimationEnd() { 4040 if (!mSelectingText) { 4041 WebViewCore.resumeUpdatePicture(mWebViewCore); 4042 } 4043 onZoomAnimationEnd(); 4044 } 4045 4046 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4047 Paint.DITHER_FLAG | 4048 Paint.SUBPIXEL_TEXT_FLAG; 4049 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4050 Paint.DITHER_FLAG; 4051 4052 private final DrawFilter mZoomFilter = 4053 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4054 // If we need to trade better quality for speed, set mScrollFilter to null 4055 private final DrawFilter mScrollFilter = 4056 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4057 4058 private void drawCoreAndCursorRing(Canvas canvas, int color, 4059 boolean drawCursorRing) { 4060 if (mDrawHistory) { 4061 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4062 canvas.drawPicture(mHistoryPicture); 4063 return; 4064 } 4065 if (mNativeClass == 0) return; 4066 4067 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4068 boolean animateScroll = ((!mScroller.isFinished() 4069 || mVelocityTracker != null) 4070 && (mTouchMode != TOUCH_DRAG_MODE || 4071 mHeldMotionless != MOTIONLESS_TRUE)) 4072 || mDeferTouchMode == TOUCH_DRAG_MODE; 4073 if (mTouchMode == TOUCH_DRAG_MODE) { 4074 if (mHeldMotionless == MOTIONLESS_PENDING) { 4075 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4076 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4077 mHeldMotionless = MOTIONLESS_FALSE; 4078 } 4079 if (mHeldMotionless == MOTIONLESS_FALSE) { 4080 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4081 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4082 mHeldMotionless = MOTIONLESS_PENDING; 4083 } 4084 } 4085 if (animateZoom) { 4086 mZoomManager.animateZoom(canvas); 4087 } else { 4088 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4089 } 4090 4091 boolean UIAnimationsRunning = false; 4092 // Currently for each draw we compute the animation values; 4093 // We may in the future decide to do that independently. 4094 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4095 UIAnimationsRunning = true; 4096 // If we have unfinished (or unstarted) animations, 4097 // we ask for a repaint. 4098 invalidate(); 4099 } 4100 4101 // decide which adornments to draw 4102 int extras = DRAW_EXTRAS_NONE; 4103 if (mFindIsUp) { 4104 extras = DRAW_EXTRAS_FIND; 4105 } else if (mSelectingText) { 4106 extras = DRAW_EXTRAS_SELECTION; 4107 nativeSetSelectionPointer(mDrawSelectionPointer, 4108 mZoomManager.getInvScale(), 4109 mSelectX, mSelectY - getTitleHeight()); 4110 } else if (drawCursorRing) { 4111 extras = DRAW_EXTRAS_CURSOR_RING; 4112 } 4113 if (DebugFlags.WEB_VIEW) { 4114 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4115 + " mSelectingText=" + mSelectingText 4116 + " nativePageShouldHandleShiftAndArrows()=" 4117 + nativePageShouldHandleShiftAndArrows() 4118 + " animateZoom=" + animateZoom 4119 + " extras=" + extras); 4120 } 4121 4122 if (canvas.isHardwareAccelerated()) { 4123 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4124 getScale(), extras); 4125 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4126 } else { 4127 DrawFilter df = null; 4128 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4129 df = mZoomFilter; 4130 } else if (animateScroll) { 4131 df = mScrollFilter; 4132 } 4133 canvas.setDrawFilter(df); 4134 // XXX: Revisit splitting content. Right now it causes a 4135 // synchronization problem with layers. 4136 int content = nativeDraw(canvas, color, extras, false); 4137 canvas.setDrawFilter(null); 4138 if (content != 0) { 4139 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4140 } 4141 } 4142 4143 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4144 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4145 mTouchMode = TOUCH_SHORTPRESS_MODE; 4146 } 4147 } 4148 if (mFocusSizeChanged) { 4149 mFocusSizeChanged = false; 4150 // If we are zooming, this will get handled above, when the zoom 4151 // finishes. We also do not need to do this unless the WebTextView 4152 // is showing. 4153 if (!animateZoom && inEditingMode()) { 4154 didUpdateWebTextViewDimensions(ANYWHERE); 4155 } 4156 } 4157 } 4158 4159 // draw history 4160 private boolean mDrawHistory = false; 4161 private Picture mHistoryPicture = null; 4162 private int mHistoryWidth = 0; 4163 private int mHistoryHeight = 0; 4164 4165 // Only check the flag, can be called from WebCore thread 4166 boolean drawHistory() { 4167 return mDrawHistory; 4168 } 4169 4170 int getHistoryPictureWidth() { 4171 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4172 } 4173 4174 // Should only be called in UI thread 4175 void switchOutDrawHistory() { 4176 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4177 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4178 mDrawHistory = false; 4179 mHistoryPicture = null; 4180 invalidate(); 4181 int oldScrollX = mScrollX; 4182 int oldScrollY = mScrollY; 4183 mScrollX = pinLocX(mScrollX); 4184 mScrollY = pinLocY(mScrollY); 4185 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4186 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4187 } else { 4188 sendOurVisibleRect(); 4189 } 4190 } 4191 } 4192 4193 WebViewCore.CursorData cursorData() { 4194 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4195 result.mMoveGeneration = nativeMoveGeneration(); 4196 result.mFrame = nativeCursorFramePointer(); 4197 Point position = nativeCursorPosition(); 4198 result.mX = position.x; 4199 result.mY = position.y; 4200 return result; 4201 } 4202 4203 /** 4204 * Delete text from start to end in the focused textfield. If there is no 4205 * focus, or if start == end, silently fail. If start and end are out of 4206 * order, swap them. 4207 * @param start Beginning of selection to delete. 4208 * @param end End of selection to delete. 4209 */ 4210 /* package */ void deleteSelection(int start, int end) { 4211 mTextGeneration++; 4212 WebViewCore.TextSelectionData data 4213 = new WebViewCore.TextSelectionData(start, end); 4214 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4215 data); 4216 } 4217 4218 /** 4219 * Set the selection to (start, end) in the focused textfield. If start and 4220 * end are out of order, swap them. 4221 * @param start Beginning of selection. 4222 * @param end End of selection. 4223 */ 4224 /* package */ void setSelection(int start, int end) { 4225 if (mWebViewCore != null) { 4226 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4227 } 4228 } 4229 4230 @Override 4231 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4232 InputConnection connection = super.onCreateInputConnection(outAttrs); 4233 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4234 return connection; 4235 } 4236 4237 /** 4238 * Called in response to a message from webkit telling us that the soft 4239 * keyboard should be launched. 4240 */ 4241 private void displaySoftKeyboard(boolean isTextView) { 4242 InputMethodManager imm = (InputMethodManager) 4243 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4244 4245 // bring it back to the default level scale so that user can enter text 4246 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4247 if (zoom) { 4248 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4249 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4250 } 4251 if (isTextView) { 4252 rebuildWebTextView(); 4253 if (inEditingMode()) { 4254 imm.showSoftInput(mWebTextView, 0); 4255 if (zoom) { 4256 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4257 } 4258 return; 4259 } 4260 } 4261 // Used by plugins and contentEditable. 4262 // Also used if the navigation cache is out of date, and 4263 // does not recognize that a textfield is in focus. In that 4264 // case, use WebView as the targeted view. 4265 // see http://b/issue?id=2457459 4266 imm.showSoftInput(this, 0); 4267 } 4268 4269 // Called by WebKit to instruct the UI to hide the keyboard 4270 private void hideSoftKeyboard() { 4271 InputMethodManager imm = InputMethodManager.peekInstance(); 4272 if (imm != null && (imm.isActive(this) 4273 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4274 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4275 } 4276 } 4277 4278 /* 4279 * This method checks the current focus and cursor and potentially rebuilds 4280 * mWebTextView to have the appropriate properties, such as password, 4281 * multiline, and what text it contains. It also removes it if necessary. 4282 */ 4283 /* package */ void rebuildWebTextView() { 4284 // If the WebView does not have focus, do nothing until it gains focus. 4285 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4286 return; 4287 } 4288 boolean alreadyThere = inEditingMode(); 4289 // inEditingMode can only return true if mWebTextView is non-null, 4290 // so we can safely call remove() if (alreadyThere) 4291 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4292 if (alreadyThere) { 4293 mWebTextView.remove(); 4294 } 4295 return; 4296 } 4297 // At this point, we know we have found an input field, so go ahead 4298 // and create the WebTextView if necessary. 4299 if (mWebTextView == null) { 4300 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4301 // Initialize our generation number. 4302 mTextGeneration = 0; 4303 } 4304 mWebTextView.updateTextSize(); 4305 Rect visibleRect = new Rect(); 4306 calcOurContentVisibleRect(visibleRect); 4307 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4308 // should be in content coordinates. 4309 Rect bounds = nativeFocusCandidateNodeBounds(); 4310 Rect vBox = contentToViewRect(bounds); 4311 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4312 if (!Rect.intersects(bounds, visibleRect)) { 4313 revealSelection(); 4314 } 4315 String text = nativeFocusCandidateText(); 4316 int nodePointer = nativeFocusCandidatePointer(); 4317 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4318 // It is possible that we have the same textfield, but it has moved, 4319 // i.e. In the case of opening/closing the screen. 4320 // In that case, we need to set the dimensions, but not the other 4321 // aspects. 4322 // If the text has been changed by webkit, update it. However, if 4323 // there has been more UI text input, ignore it. We will receive 4324 // another update when that text is recognized. 4325 if (text != null && !text.equals(mWebTextView.getText().toString()) 4326 && nativeTextGeneration() == mTextGeneration) { 4327 mWebTextView.setTextAndKeepSelection(text); 4328 } 4329 } else { 4330 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4331 Gravity.RIGHT : Gravity.NO_GRAVITY); 4332 // This needs to be called before setType, which may call 4333 // requestFormData, and it needs to have the correct nodePointer. 4334 mWebTextView.setNodePointer(nodePointer); 4335 mWebTextView.setType(nativeFocusCandidateType()); 4336 updateWebTextViewPadding(); 4337 if (null == text) { 4338 if (DebugFlags.WEB_VIEW) { 4339 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4340 } 4341 text = ""; 4342 } 4343 mWebTextView.setTextAndKeepSelection(text); 4344 InputMethodManager imm = InputMethodManager.peekInstance(); 4345 if (imm != null && imm.isActive(mWebTextView)) { 4346 imm.restartInput(mWebTextView); 4347 } 4348 } 4349 if (isFocused()) { 4350 mWebTextView.requestFocus(); 4351 } 4352 } 4353 4354 /** 4355 * Update the padding of mWebTextView based on the native textfield/textarea 4356 */ 4357 void updateWebTextViewPadding() { 4358 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4359 if (paddingRect != null) { 4360 // Use contentToViewDimension since these are the dimensions of 4361 // the padding. 4362 mWebTextView.setPadding( 4363 contentToViewDimension(paddingRect.left), 4364 contentToViewDimension(paddingRect.top), 4365 contentToViewDimension(paddingRect.right), 4366 contentToViewDimension(paddingRect.bottom)); 4367 } 4368 } 4369 4370 /** 4371 * Tell webkit to put the cursor on screen. 4372 */ 4373 /* package */ void revealSelection() { 4374 if (mWebViewCore != null) { 4375 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4376 } 4377 } 4378 4379 /** 4380 * Called by WebTextView to find saved form data associated with the 4381 * textfield 4382 * @param name Name of the textfield. 4383 * @param nodePointer Pointer to the node of the textfield, so it can be 4384 * compared to the currently focused textfield when the data is 4385 * retrieved. 4386 * @param autoFillable true if WebKit has determined this field is part of 4387 * a form that can be auto filled. 4388 * @param autoComplete true if the attribute "autocomplete" is set to true 4389 * on the textfield. 4390 */ 4391 /* package */ void requestFormData(String name, int nodePointer, 4392 boolean autoFillable, boolean autoComplete) { 4393 if (mWebViewCore.getSettings().getSaveFormData()) { 4394 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4395 update.arg1 = nodePointer; 4396 RequestFormData updater = new RequestFormData(name, getUrl(), 4397 update, autoFillable, autoComplete); 4398 Thread t = new Thread(updater); 4399 t.start(); 4400 } 4401 } 4402 4403 /** 4404 * Pass a message to find out the <label> associated with the <input> 4405 * identified by nodePointer 4406 * @param framePointer Pointer to the frame containing the <input> node 4407 * @param nodePointer Pointer to the node for which a <label> is desired. 4408 */ 4409 /* package */ void requestLabel(int framePointer, int nodePointer) { 4410 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4411 nodePointer); 4412 } 4413 4414 /* 4415 * This class requests an Adapter for the WebTextView which shows past 4416 * entries stored in the database. It is a Runnable so that it can be done 4417 * in its own thread, without slowing down the UI. 4418 */ 4419 private class RequestFormData implements Runnable { 4420 private String mName; 4421 private String mUrl; 4422 private Message mUpdateMessage; 4423 private boolean mAutoFillable; 4424 private boolean mAutoComplete; 4425 4426 public RequestFormData(String name, String url, Message msg, 4427 boolean autoFillable, boolean autoComplete) { 4428 mName = name; 4429 mUrl = url; 4430 mUpdateMessage = msg; 4431 mAutoFillable = autoFillable; 4432 mAutoComplete = autoComplete; 4433 } 4434 4435 public void run() { 4436 ArrayList<String> pastEntries = new ArrayList<String>(); 4437 4438 if (mAutoFillable) { 4439 // Note that code inside the adapter click handler in WebTextView depends 4440 // on the AutoFill item being at the top of the drop down list. If you change 4441 // the order, make sure to do it there too! 4442 WebSettings settings = getSettings(); 4443 if (settings != null && settings.getAutoFillProfile() != null) { 4444 pastEntries.add(getResources().getText( 4445 com.android.internal.R.string.autofill_this_form).toString() + 4446 " " + 4447 mAutoFillData.getPreviewString()); 4448 mWebTextView.setAutoFillProfileIsSet(true); 4449 } else { 4450 // There is no autofill profile set up yet, so add an option that 4451 // will invite the user to set their profile up. 4452 pastEntries.add(getResources().getText( 4453 com.android.internal.R.string.setup_autofill).toString()); 4454 mWebTextView.setAutoFillProfileIsSet(false); 4455 } 4456 } 4457 4458 if (mAutoComplete) { 4459 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4460 } 4461 4462 if (pastEntries.size() > 0) { 4463 AutoCompleteAdapter adapter = new 4464 AutoCompleteAdapter(mContext, pastEntries); 4465 mUpdateMessage.obj = adapter; 4466 mUpdateMessage.sendToTarget(); 4467 } 4468 } 4469 } 4470 4471 /** 4472 * Dump the display tree to "/sdcard/displayTree.txt" 4473 * 4474 * @hide debug only 4475 */ 4476 public void dumpDisplayTree() { 4477 nativeDumpDisplayTree(getUrl()); 4478 } 4479 4480 /** 4481 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4482 * "/sdcard/domTree.txt" 4483 * 4484 * @hide debug only 4485 */ 4486 public void dumpDomTree(boolean toFile) { 4487 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4488 } 4489 4490 /** 4491 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4492 * to "/sdcard/renderTree.txt" 4493 * 4494 * @hide debug only 4495 */ 4496 public void dumpRenderTree(boolean toFile) { 4497 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4498 } 4499 4500 /** 4501 * Called by DRT on UI thread, need to proxy to WebCore thread. 4502 * 4503 * @hide debug only 4504 */ 4505 public void useMockDeviceOrientation() { 4506 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4507 } 4508 4509 /** 4510 * Called by DRT on WebCore thread. 4511 * 4512 * @hide debug only 4513 */ 4514 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4515 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4516 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4517 canProvideGamma, gamma); 4518 } 4519 4520 /** 4521 * Dump the V8 counters to standard output. 4522 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4523 * true. Otherwise, this will do nothing. 4524 * 4525 * @hide debug only 4526 */ 4527 public void dumpV8Counters() { 4528 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4529 } 4530 4531 // This is used to determine long press with the center key. Does not 4532 // affect long press with the trackball/touch. 4533 private boolean mGotCenterDown = false; 4534 4535 @Override 4536 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4537 // send complex characters to webkit for use by JS and plugins 4538 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4539 // pass the key to DOM 4540 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4541 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4542 // return true as DOM handles the key 4543 return true; 4544 } 4545 return false; 4546 } 4547 4548 private boolean isEnterActionKey(int keyCode) { 4549 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4550 || keyCode == KeyEvent.KEYCODE_ENTER 4551 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4552 } 4553 4554 @Override 4555 public boolean onKeyDown(int keyCode, KeyEvent event) { 4556 if (DebugFlags.WEB_VIEW) { 4557 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4558 + "keyCode=" + keyCode 4559 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4560 } 4561 4562 // don't implement accelerator keys here; defer to host application 4563 if (event.isCtrlPressed()) { 4564 return false; 4565 } 4566 4567 if (mNativeClass == 0) { 4568 return false; 4569 } 4570 4571 // do this hack up front, so it always works, regardless of touch-mode 4572 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4573 mAutoRedraw = !mAutoRedraw; 4574 if (mAutoRedraw) { 4575 invalidate(); 4576 } 4577 return true; 4578 } 4579 4580 // Bubble up the key event if 4581 // 1. it is a system key; or 4582 // 2. the host application wants to handle it; 4583 if (event.isSystem() 4584 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4585 return false; 4586 } 4587 4588 // accessibility support 4589 if (accessibilityScriptInjected()) { 4590 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4591 // if an accessibility script is injected we delegate to it the key handling. 4592 // this script is a screen reader which is a fully fledged solution for blind 4593 // users to navigate in and interact with web pages. 4594 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4595 return true; 4596 } else { 4597 // Clean up if accessibility was disabled after loading the current URL. 4598 mAccessibilityScriptInjected = false; 4599 } 4600 } else if (mAccessibilityInjector != null) { 4601 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4602 if (mAccessibilityInjector.onKeyEvent(event)) { 4603 // if an accessibility injector is present (no JavaScript enabled or the site 4604 // opts out injecting our JavaScript screen reader) we let it decide whether 4605 // to act on and consume the event. 4606 return true; 4607 } 4608 } else { 4609 // Clean up if accessibility was disabled after loading the current URL. 4610 mAccessibilityInjector = null; 4611 } 4612 } 4613 4614 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4615 if (event.hasNoModifiers()) { 4616 pageUp(false); 4617 return true; 4618 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4619 pageUp(true); 4620 return true; 4621 } 4622 } 4623 4624 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4625 if (event.hasNoModifiers()) { 4626 pageDown(false); 4627 return true; 4628 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4629 pageDown(true); 4630 return true; 4631 } 4632 } 4633 4634 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4635 pageUp(true); 4636 return true; 4637 } 4638 4639 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4640 pageDown(true); 4641 return true; 4642 } 4643 4644 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4645 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4646 switchOutDrawHistory(); 4647 if (nativePageShouldHandleShiftAndArrows()) { 4648 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4649 return true; 4650 } 4651 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4652 switch (keyCode) { 4653 case KeyEvent.KEYCODE_DPAD_UP: 4654 pageUp(true); 4655 return true; 4656 case KeyEvent.KEYCODE_DPAD_DOWN: 4657 pageDown(true); 4658 return true; 4659 case KeyEvent.KEYCODE_DPAD_LEFT: 4660 nativeClearCursor(); // start next trackball movement from page edge 4661 return pinScrollTo(0, mScrollY, true, 0); 4662 case KeyEvent.KEYCODE_DPAD_RIGHT: 4663 nativeClearCursor(); // start next trackball movement from page edge 4664 return pinScrollTo(mContentWidth, mScrollY, true, 0); 4665 } 4666 } 4667 if (mSelectingText) { 4668 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4669 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4670 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4671 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4672 int multiplier = event.getRepeatCount() + 1; 4673 moveSelection(xRate * multiplier, yRate * multiplier); 4674 return true; 4675 } 4676 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4677 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4678 return true; 4679 } 4680 // Bubble up the key event as WebView doesn't handle it 4681 return false; 4682 } 4683 4684 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4685 switchOutDrawHistory(); 4686 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 4687 || nativeCursorWantsKeyEvents(); 4688 if (event.getRepeatCount() == 0) { 4689 if (mSelectingText) { 4690 return true; // discard press if copy in progress 4691 } 4692 mGotCenterDown = true; 4693 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4694 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4695 // Already checked mNativeClass, so we do not need to check it 4696 // again. 4697 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4698 if (!wantsKeyEvents) return true; 4699 } 4700 // Bubble up the key event as WebView doesn't handle it 4701 if (!wantsKeyEvents) return false; 4702 } 4703 4704 if (getSettings().getNavDump()) { 4705 switch (keyCode) { 4706 case KeyEvent.KEYCODE_4: 4707 dumpDisplayTree(); 4708 break; 4709 case KeyEvent.KEYCODE_5: 4710 case KeyEvent.KEYCODE_6: 4711 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4712 break; 4713 case KeyEvent.KEYCODE_7: 4714 case KeyEvent.KEYCODE_8: 4715 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4716 break; 4717 case KeyEvent.KEYCODE_9: 4718 nativeInstrumentReport(); 4719 return true; 4720 } 4721 } 4722 4723 if (nativeCursorIsTextInput()) { 4724 // This message will put the node in focus, for the DOM's notion 4725 // of focus. 4726 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 4727 nativeCursorNodePointer()); 4728 // This will bring up the WebTextView and put it in focus, for 4729 // our view system's notion of focus 4730 rebuildWebTextView(); 4731 // Now we need to pass the event to it 4732 if (inEditingMode()) { 4733 mWebTextView.setDefaultSelection(); 4734 return mWebTextView.dispatchKeyEvent(event); 4735 } 4736 } else if (nativeHasFocusNode()) { 4737 // In this case, the cursor is not on a text input, but the focus 4738 // might be. Check it, and if so, hand over to the WebTextView. 4739 rebuildWebTextView(); 4740 if (inEditingMode()) { 4741 mWebTextView.setDefaultSelection(); 4742 return mWebTextView.dispatchKeyEvent(event); 4743 } 4744 } 4745 4746 // TODO: should we pass all the keys to DOM or check the meta tag 4747 if (nativeCursorWantsKeyEvents() || true) { 4748 // pass the key to DOM 4749 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4750 // return true as DOM handles the key 4751 return true; 4752 } 4753 4754 // Bubble up the key event as WebView doesn't handle it 4755 return false; 4756 } 4757 4758 @Override 4759 public boolean onKeyUp(int keyCode, KeyEvent event) { 4760 if (DebugFlags.WEB_VIEW) { 4761 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4762 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4763 } 4764 4765 if (mNativeClass == 0) { 4766 return false; 4767 } 4768 4769 // special CALL handling when cursor node's href is "tel:XXX" 4770 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4771 String text = nativeCursorText(); 4772 if (!nativeCursorIsTextInput() && text != null 4773 && text.startsWith(SCHEME_TEL)) { 4774 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4775 getContext().startActivity(intent); 4776 return true; 4777 } 4778 } 4779 4780 // Bubble up the key event if 4781 // 1. it is a system key; or 4782 // 2. the host application wants to handle it; 4783 if (event.isSystem() 4784 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4785 return false; 4786 } 4787 4788 // accessibility support 4789 if (accessibilityScriptInjected()) { 4790 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4791 // if an accessibility script is injected we delegate to it the key handling. 4792 // this script is a screen reader which is a fully fledged solution for blind 4793 // users to navigate in and interact with web pages. 4794 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4795 return true; 4796 } else { 4797 // Clean up if accessibility was disabled after loading the current URL. 4798 mAccessibilityScriptInjected = false; 4799 } 4800 } else if (mAccessibilityInjector != null) { 4801 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4802 if (mAccessibilityInjector.onKeyEvent(event)) { 4803 // if an accessibility injector is present (no JavaScript enabled or the site 4804 // opts out injecting our JavaScript screen reader) we let it decide whether to 4805 // act on and consume the event. 4806 return true; 4807 } 4808 } else { 4809 // Clean up if accessibility was disabled after loading the current URL. 4810 mAccessibilityInjector = null; 4811 } 4812 } 4813 4814 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4815 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4816 if (nativePageShouldHandleShiftAndArrows()) { 4817 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4818 return true; 4819 } 4820 // always handle the navigation keys in the UI thread 4821 // Bubble up the key event as WebView doesn't handle it 4822 return false; 4823 } 4824 4825 if (isEnterActionKey(keyCode)) { 4826 // remove the long press message first 4827 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4828 mGotCenterDown = false; 4829 4830 if (mSelectingText) { 4831 if (mExtendSelection) { 4832 copySelection(); 4833 selectionDone(); 4834 } else { 4835 mExtendSelection = true; 4836 nativeSetExtendSelection(); 4837 invalidate(); // draw the i-beam instead of the arrow 4838 } 4839 return true; // discard press if copy in progress 4840 } 4841 4842 // perform the single click 4843 Rect visibleRect = sendOurVisibleRect(); 4844 // Note that sendOurVisibleRect calls viewToContent, so the 4845 // coordinates should be in content coordinates. 4846 if (!nativeCursorIntersects(visibleRect)) { 4847 return false; 4848 } 4849 WebViewCore.CursorData data = cursorData(); 4850 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4851 playSoundEffect(SoundEffectConstants.CLICK); 4852 if (nativeCursorIsTextInput()) { 4853 rebuildWebTextView(); 4854 centerKeyPressOnTextField(); 4855 if (inEditingMode()) { 4856 mWebTextView.setDefaultSelection(); 4857 } 4858 return true; 4859 } 4860 clearTextEntry(); 4861 nativeShowCursorTimed(); 4862 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4863 return true; 4864 } 4865 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 4866 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4867 nativeCursorNodePointer()); 4868 return true; 4869 } 4870 } 4871 4872 // TODO: should we pass all the keys to DOM or check the meta tag 4873 if (nativeCursorWantsKeyEvents() || true) { 4874 // pass the key to DOM 4875 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4876 // return true as DOM handles the key 4877 return true; 4878 } 4879 4880 // Bubble up the key event as WebView doesn't handle it 4881 return false; 4882 } 4883 4884 /* 4885 * Enter selecting text mode, and see if CAB should be shown. 4886 * Returns true if the WebView is now in 4887 * selecting text mode (including if it was already in that mode, and this 4888 * method did nothing). 4889 */ 4890 private boolean setUpSelect(boolean selectWord, int x, int y) { 4891 if (0 == mNativeClass) return false; // client isn't initialized 4892 if (inFullScreenMode()) return false; 4893 if (mSelectingText) return true; 4894 nativeResetSelection(); 4895 if (selectWord && !nativeWordSelection(x, y)) { 4896 selectionDone(); 4897 return false; 4898 } 4899 mSelectCallback = new SelectActionModeCallback(); 4900 mSelectCallback.setWebView(this); 4901 if (startActionMode(mSelectCallback) == null) { 4902 // There is no ActionMode, so do not allow the user to modify a 4903 // selection. 4904 selectionDone(); 4905 return false; 4906 } 4907 mExtendSelection = false; 4908 mSelectingText = mDrawSelectionPointer = true; 4909 // don't let the picture change during text selection 4910 WebViewCore.pauseUpdatePicture(mWebViewCore); 4911 if (nativeHasCursorNode()) { 4912 Rect rect = nativeCursorNodeBounds(); 4913 mSelectX = contentToViewX(rect.left); 4914 mSelectY = contentToViewY(rect.top); 4915 } else if (mLastTouchY > getVisibleTitleHeight()) { 4916 mSelectX = mScrollX + mLastTouchX; 4917 mSelectY = mScrollY + mLastTouchY; 4918 } else { 4919 mSelectX = mScrollX + getViewWidth() / 2; 4920 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4921 } 4922 nativeHideCursor(); 4923 mMinAutoScrollX = 0; 4924 mMaxAutoScrollX = getViewWidth(); 4925 mMinAutoScrollY = 0; 4926 mMaxAutoScrollY = getViewHeightWithTitle(); 4927 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 4928 viewToContentY(mSelectY), mScrollingLayerRect, 4929 mScrollingLayerBounds); 4930 if (mScrollingLayer != 0) { 4931 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 4932 mMinAutoScrollX = Math.max(mMinAutoScrollX, 4933 contentToViewX(mScrollingLayerBounds.left)); 4934 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 4935 contentToViewX(mScrollingLayerBounds.right)); 4936 } 4937 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 4938 mMinAutoScrollY = Math.max(mMinAutoScrollY, 4939 contentToViewY(mScrollingLayerBounds.top)); 4940 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 4941 contentToViewY(mScrollingLayerBounds.bottom)); 4942 } 4943 } 4944 mMinAutoScrollX += SELECT_SCROLL; 4945 mMaxAutoScrollX -= SELECT_SCROLL; 4946 mMinAutoScrollY += SELECT_SCROLL; 4947 mMaxAutoScrollY -= SELECT_SCROLL; 4948 return true; 4949 } 4950 4951 /** 4952 * Use this method to put the WebView into text selection mode. 4953 * Do not rely on this functionality; it will be deprecated in the future. 4954 */ 4955 public void emulateShiftHeld() { 4956 setUpSelect(false, 0, 0); 4957 } 4958 4959 /** 4960 * Select all of the text in this WebView. 4961 * 4962 * @hide pending API council approval. 4963 */ 4964 public void selectAll() { 4965 if (0 == mNativeClass) return; // client isn't initialized 4966 if (inFullScreenMode()) return; 4967 if (!mSelectingText) { 4968 // retrieve a point somewhere within the text 4969 Point select = nativeSelectableText(); 4970 if (!selectText(select.x, select.y)) return; 4971 } 4972 nativeSelectAll(); 4973 mDrawSelectionPointer = false; 4974 mExtendSelection = true; 4975 invalidate(); 4976 } 4977 4978 /** 4979 * Called when the selection has been removed. 4980 */ 4981 void selectionDone() { 4982 if (mSelectingText) { 4983 mSelectingText = false; 4984 // finish is idempotent, so this is fine even if selectionDone was 4985 // called by mSelectCallback.onDestroyActionMode 4986 mSelectCallback.finish(); 4987 mSelectCallback = null; 4988 WebViewCore.resumePriority(); 4989 WebViewCore.resumeUpdatePicture(mWebViewCore); 4990 invalidate(); // redraw without selection 4991 mAutoScrollX = 0; 4992 mAutoScrollY = 0; 4993 mSentAutoScrollMessage = false; 4994 } 4995 } 4996 4997 /** 4998 * Copy the selection to the clipboard 4999 * 5000 * @hide pending API council approval. 5001 */ 5002 public boolean copySelection() { 5003 boolean copiedSomething = false; 5004 String selection = getSelection(); 5005 if (selection != null && selection != "") { 5006 if (DebugFlags.WEB_VIEW) { 5007 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5008 } 5009 Toast.makeText(mContext 5010 , com.android.internal.R.string.text_copied 5011 , Toast.LENGTH_SHORT).show(); 5012 copiedSomething = true; 5013 ClipboardManager cm = (ClipboardManager)getContext() 5014 .getSystemService(Context.CLIPBOARD_SERVICE); 5015 cm.setText(selection); 5016 } 5017 invalidate(); // remove selection region and pointer 5018 return copiedSomething; 5019 } 5020 5021 /** 5022 * Returns the currently highlighted text as a string. 5023 */ 5024 String getSelection() { 5025 if (mNativeClass == 0) return ""; 5026 return nativeGetSelection(); 5027 } 5028 5029 @Override 5030 protected void onAttachedToWindow() { 5031 super.onAttachedToWindow(); 5032 if (hasWindowFocus()) setActive(true); 5033 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5034 if (treeObserver != null) { 5035 if (mGlobalLayoutListener == null) { 5036 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5037 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5038 } 5039 if (mScrollChangedListener == null) { 5040 mScrollChangedListener = new InnerScrollChangedListener(); 5041 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5042 } 5043 } 5044 5045 addAccessibilityApisToJavaScript(); 5046 } 5047 5048 @Override 5049 protected void onDetachedFromWindow() { 5050 clearHelpers(); 5051 mZoomManager.dismissZoomPicker(); 5052 if (hasWindowFocus()) setActive(false); 5053 5054 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5055 if (treeObserver != null) { 5056 if (mGlobalLayoutListener != null) { 5057 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5058 mGlobalLayoutListener = null; 5059 } 5060 if (mScrollChangedListener != null) { 5061 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5062 mScrollChangedListener = null; 5063 } 5064 } 5065 5066 removeAccessibilityApisFromJavaScript(); 5067 5068 super.onDetachedFromWindow(); 5069 } 5070 5071 @Override 5072 protected void onVisibilityChanged(View changedView, int visibility) { 5073 super.onVisibilityChanged(changedView, visibility); 5074 // The zoomManager may be null if the webview is created from XML that 5075 // specifies the view's visibility param as not visible (see http://b/2794841) 5076 if (visibility != View.VISIBLE && mZoomManager != null) { 5077 mZoomManager.dismissZoomPicker(); 5078 } 5079 } 5080 5081 /** 5082 * @deprecated WebView no longer needs to implement 5083 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5084 */ 5085 @Deprecated 5086 public void onChildViewAdded(View parent, View child) {} 5087 5088 /** 5089 * @deprecated WebView no longer needs to implement 5090 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5091 */ 5092 @Deprecated 5093 public void onChildViewRemoved(View p, View child) {} 5094 5095 /** 5096 * @deprecated WebView should not have implemented 5097 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 5098 * does nothing now. 5099 */ 5100 @Deprecated 5101 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5102 } 5103 5104 void setActive(boolean active) { 5105 if (active) { 5106 if (hasFocus()) { 5107 // If our window regained focus, and we have focus, then begin 5108 // drawing the cursor ring 5109 mDrawCursorRing = true; 5110 setFocusControllerActive(true); 5111 if (mNativeClass != 0) { 5112 nativeRecordButtons(true, false, true); 5113 } 5114 } else { 5115 if (!inEditingMode()) { 5116 // If our window gained focus, but we do not have it, do not 5117 // draw the cursor ring. 5118 mDrawCursorRing = false; 5119 setFocusControllerActive(false); 5120 } 5121 // We do not call nativeRecordButtons here because we assume 5122 // that when we lost focus, or window focus, it got called with 5123 // false for the first parameter 5124 } 5125 } else { 5126 if (!mZoomManager.isZoomPickerVisible()) { 5127 /* 5128 * The external zoom controls come in their own window, so our 5129 * window loses focus. Our policy is to not draw the cursor ring 5130 * if our window is not focused, but this is an exception since 5131 * the user can still navigate the web page with the zoom 5132 * controls showing. 5133 */ 5134 mDrawCursorRing = false; 5135 } 5136 mKeysPressed.clear(); 5137 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5138 mTouchMode = TOUCH_DONE_MODE; 5139 if (mNativeClass != 0) { 5140 nativeRecordButtons(false, false, true); 5141 } 5142 setFocusControllerActive(false); 5143 } 5144 invalidate(); 5145 } 5146 5147 // To avoid drawing the cursor ring, and remove the TextView when our window 5148 // loses focus. 5149 @Override 5150 public void onWindowFocusChanged(boolean hasWindowFocus) { 5151 setActive(hasWindowFocus); 5152 if (hasWindowFocus) { 5153 JWebCoreJavaBridge.setActiveWebView(this); 5154 } else { 5155 JWebCoreJavaBridge.removeActiveWebView(this); 5156 } 5157 super.onWindowFocusChanged(hasWindowFocus); 5158 } 5159 5160 /* 5161 * Pass a message to WebCore Thread, telling the WebCore::Page's 5162 * FocusController to be "inactive" so that it will 5163 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5164 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5165 */ 5166 /* package */ void setFocusControllerActive(boolean active) { 5167 if (mWebViewCore == null) return; 5168 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5169 // Need to send this message after the document regains focus. 5170 if (active && mListBoxMessage != null) { 5171 mWebViewCore.sendMessage(mListBoxMessage); 5172 mListBoxMessage = null; 5173 } 5174 } 5175 5176 @Override 5177 protected void onFocusChanged(boolean focused, int direction, 5178 Rect previouslyFocusedRect) { 5179 if (DebugFlags.WEB_VIEW) { 5180 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5181 } 5182 if (focused) { 5183 // When we regain focus, if we have window focus, resume drawing 5184 // the cursor ring 5185 if (hasWindowFocus()) { 5186 mDrawCursorRing = true; 5187 if (mNativeClass != 0) { 5188 nativeRecordButtons(true, false, true); 5189 } 5190 setFocusControllerActive(true); 5191 //} else { 5192 // The WebView has gained focus while we do not have 5193 // windowfocus. When our window lost focus, we should have 5194 // called nativeRecordButtons(false...) 5195 } 5196 } else { 5197 // When we lost focus, unless focus went to the TextView (which is 5198 // true if we are in editing mode), stop drawing the cursor ring. 5199 if (!inEditingMode()) { 5200 mDrawCursorRing = false; 5201 if (mNativeClass != 0) { 5202 nativeRecordButtons(false, false, true); 5203 } 5204 setFocusControllerActive(false); 5205 } 5206 mKeysPressed.clear(); 5207 } 5208 5209 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5210 } 5211 5212 void setGLRectViewport() { 5213 // Use the getGlobalVisibleRect() to get the intersection among the parents 5214 // visible == false means we're clipped - send a null rect down to indicate that 5215 // we should not draw 5216 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5217 if (visible) { 5218 // Then need to invert the Y axis, just for GL 5219 View rootView = getRootView(); 5220 int rootViewHeight = rootView.getHeight(); 5221 int savedWebViewBottom = mGLRectViewport.bottom; 5222 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeight(); 5223 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5224 mGLViewportEmpty = false; 5225 } else { 5226 mGLViewportEmpty = true; 5227 } 5228 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport); 5229 } 5230 5231 /** 5232 * @hide 5233 */ 5234 @Override 5235 protected boolean setFrame(int left, int top, int right, int bottom) { 5236 boolean changed = super.setFrame(left, top, right, bottom); 5237 if (!changed && mHeightCanMeasure) { 5238 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5239 // in WebViewCore after we get the first layout. We do call 5240 // requestLayout() when we get contentSizeChanged(). But the View 5241 // system won't call onSizeChanged if the dimension is not changed. 5242 // In this case, we need to call sendViewSizeZoom() explicitly to 5243 // notify the WebKit about the new dimensions. 5244 sendViewSizeZoom(false); 5245 } 5246 setGLRectViewport(); 5247 return changed; 5248 } 5249 5250 @Override 5251 protected void onSizeChanged(int w, int h, int ow, int oh) { 5252 super.onSizeChanged(w, h, ow, oh); 5253 5254 // adjust the max viewport width depending on the view dimensions. This 5255 // is to ensure the scaling is not going insane. So do not shrink it if 5256 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5257 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5258 if (newMaxViewportWidth > sMaxViewportWidth) { 5259 sMaxViewportWidth = newMaxViewportWidth; 5260 } 5261 5262 mZoomManager.onSizeChanged(w, h, ow, oh); 5263 } 5264 5265 @Override 5266 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5267 super.onScrollChanged(l, t, oldl, oldt); 5268 if (!mInOverScrollMode) { 5269 sendOurVisibleRect(); 5270 // update WebKit if visible title bar height changed. The logic is same 5271 // as getVisibleTitleHeight. 5272 int titleHeight = getTitleHeight(); 5273 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5274 sendViewSizeZoom(false); 5275 } 5276 } 5277 } 5278 5279 @Override 5280 public boolean dispatchKeyEvent(KeyEvent event) { 5281 switch (event.getAction()) { 5282 case KeyEvent.ACTION_DOWN: 5283 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5284 break; 5285 case KeyEvent.ACTION_MULTIPLE: 5286 // Always accept the action. 5287 break; 5288 case KeyEvent.ACTION_UP: 5289 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5290 if (location == -1) { 5291 // We did not receive the key down for this key, so do not 5292 // handle the key up. 5293 return false; 5294 } else { 5295 // We did receive the key down. Handle the key up, and 5296 // remove it from our pressed keys. 5297 mKeysPressed.remove(location); 5298 } 5299 break; 5300 default: 5301 // Accept the action. This should not happen, unless a new 5302 // action is added to KeyEvent. 5303 break; 5304 } 5305 if (inEditingMode() && mWebTextView.isFocused()) { 5306 // Ensure that the WebTextView gets the event, even if it does 5307 // not currently have a bounds. 5308 return mWebTextView.dispatchKeyEvent(event); 5309 } else { 5310 return super.dispatchKeyEvent(event); 5311 } 5312 } 5313 5314 // Here are the snap align logic: 5315 // 1. If it starts nearly horizontally or vertically, snap align; 5316 // 2. If there is a dramitic direction change, let it go; 5317 // 3. If there is a same direction back and forth, lock it. 5318 5319 // adjustable parameters 5320 private int mMinLockSnapReverseDistance; 5321 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5322 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5323 5324 private boolean hitFocusedPlugin(int contentX, int contentY) { 5325 if (DebugFlags.WEB_VIEW) { 5326 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5327 Rect r = nativeFocusNodeBounds(); 5328 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5329 + ", " + r.right + ", " + r.bottom + ")"); 5330 } 5331 return nativeFocusIsPlugin() 5332 && nativeFocusNodeBounds().contains(contentX, contentY); 5333 } 5334 5335 private boolean shouldForwardTouchEvent() { 5336 return mFullScreenHolder != null || (mForwardTouchEvents 5337 && !mSelectingText 5338 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 5339 } 5340 5341 private boolean inFullScreenMode() { 5342 return mFullScreenHolder != null; 5343 } 5344 5345 private void dismissFullScreenMode() { 5346 if (inFullScreenMode()) { 5347 mFullScreenHolder.dismiss(); 5348 mFullScreenHolder = null; 5349 } 5350 } 5351 5352 void onPinchToZoomAnimationStart() { 5353 // cancel the single touch handling 5354 cancelTouch(); 5355 onZoomAnimationStart(); 5356 } 5357 5358 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5359 onZoomAnimationEnd(); 5360 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5361 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5362 // as it may trigger the unwanted fling. 5363 mTouchMode = TOUCH_PINCH_DRAG; 5364 mConfirmMove = true; 5365 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5366 } 5367 5368 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5369 // layer is found. 5370 private void startScrollingLayer(float x, float y) { 5371 int contentX = viewToContentX((int) x + mScrollX); 5372 int contentY = viewToContentY((int) y + mScrollY); 5373 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5374 mScrollingLayerRect, mScrollingLayerBounds); 5375 if (mScrollingLayer != 0) { 5376 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5377 } 5378 } 5379 5380 // 1/(density * density) used to compute the distance between points. 5381 // Computed in init(). 5382 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5383 5384 // The distance between two points reported in onTouchEvent scaled by the 5385 // density of the screen. 5386 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5387 5388 @Override 5389 public boolean onTouchEvent(MotionEvent ev) { 5390 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5391 return false; 5392 } 5393 5394 if (DebugFlags.WEB_VIEW) { 5395 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5396 + " mTouchMode=" + mTouchMode 5397 + " numPointers=" + ev.getPointerCount()); 5398 } 5399 5400 int action = ev.getActionMasked(); 5401 if (ev.getPointerCount() > 1) { // Multi-touch 5402 mIsHandlingMultiTouch = true; 5403 5404 // If WebKit already showed no interests in this sequence of events, 5405 // WebView handles them directly. 5406 if (mPreventDefault == PREVENT_DEFAULT_NO && action == MotionEvent.ACTION_MOVE) { 5407 handleMultiTouchInWebView(ev); 5408 } else { 5409 passMultiTouchToWebKit(ev); 5410 } 5411 return true; 5412 } 5413 5414 // Skip ACTION_MOVE for single touch if it's still handling multi-touch. 5415 if (mIsHandlingMultiTouch && action == MotionEvent.ACTION_MOVE) { 5416 return false; 5417 } 5418 5419 return handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 5420 } 5421 5422 /* 5423 * Common code for single touch and multi-touch. 5424 * (x, y) denotes current focus point, which is the touch point for single touch 5425 * and the middle point for multi-touch. 5426 */ 5427 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5428 long eventTime = ev.getEventTime(); 5429 5430 5431 // Due to the touch screen edge effect, a touch closer to the edge 5432 // always snapped to the edge. As getViewWidth() can be different from 5433 // getWidth() due to the scrollbar, adjusting the point to match 5434 // getViewWidth(). Same applied to the height. 5435 x = Math.min(x, getViewWidth() - 1); 5436 y = Math.min(y, getViewHeightWithTitle() - 1); 5437 5438 int deltaX = mLastTouchX - x; 5439 int deltaY = mLastTouchY - y; 5440 int contentX = viewToContentX(x + mScrollX); 5441 int contentY = viewToContentY(y + mScrollY); 5442 5443 switch (action) { 5444 case MotionEvent.ACTION_DOWN: { 5445 mPreventDefault = PREVENT_DEFAULT_NO; 5446 mConfirmMove = false; 5447 mIsHandlingMultiTouch = false; 5448 mInitialHitTestResult = null; 5449 if (!mScroller.isFinished()) { 5450 // stop the current scroll animation, but if this is 5451 // the start of a fling, allow it to add to the current 5452 // fling's velocity 5453 mScroller.abortAnimation(); 5454 mTouchMode = TOUCH_DRAG_START_MODE; 5455 mConfirmMove = true; 5456 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5457 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5458 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5459 if (getSettings().supportTouchOnly()) { 5460 removeTouchHighlight(true); 5461 } 5462 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5463 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5464 } else { 5465 // commit the short press action for the previous tap 5466 doShortPress(); 5467 mTouchMode = TOUCH_INIT_MODE; 5468 mDeferTouchProcess = (!inFullScreenMode() 5469 && mForwardTouchEvents) ? hitFocusedPlugin( 5470 contentX, contentY) : false; 5471 } 5472 } else { // the normal case 5473 mTouchMode = TOUCH_INIT_MODE; 5474 mDeferTouchProcess = (!inFullScreenMode() 5475 && mForwardTouchEvents) ? hitFocusedPlugin( 5476 contentX, contentY) : false; 5477 mWebViewCore.sendMessage( 5478 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5479 if (getSettings().supportTouchOnly()) { 5480 TouchHighlightData data = new TouchHighlightData(); 5481 data.mX = contentX; 5482 data.mY = contentY; 5483 data.mSlop = viewToContentDimension(mNavSlop); 5484 mWebViewCore.sendMessageDelayed( 5485 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5486 ViewConfiguration.getTapTimeout()); 5487 if (DEBUG_TOUCH_HIGHLIGHT) { 5488 if (getSettings().getNavDump()) { 5489 mTouchHighlightX = (int) x + mScrollX; 5490 mTouchHighlightY = (int) y + mScrollY; 5491 mPrivateHandler.postDelayed(new Runnable() { 5492 public void run() { 5493 mTouchHighlightX = mTouchHighlightY = 0; 5494 invalidate(); 5495 } 5496 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5497 } 5498 } 5499 } 5500 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5501 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5502 (eventTime - mLastTouchUpTime), eventTime); 5503 } 5504 if (mSelectingText) { 5505 mDrawSelectionPointer = false; 5506 mSelectionStarted = nativeStartSelection(contentX, contentY); 5507 if (DebugFlags.WEB_VIEW) { 5508 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5509 } 5510 invalidate(); 5511 } 5512 } 5513 // Trigger the link 5514 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 5515 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 5516 mPrivateHandler.sendEmptyMessageDelayed( 5517 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5518 mPrivateHandler.sendEmptyMessageDelayed( 5519 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5520 if (inFullScreenMode() || mDeferTouchProcess) { 5521 mPreventDefault = PREVENT_DEFAULT_YES; 5522 } else if (mForwardTouchEvents) { 5523 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5524 } else { 5525 mPreventDefault = PREVENT_DEFAULT_NO; 5526 } 5527 // pass the touch events from UI thread to WebCore thread 5528 if (shouldForwardTouchEvent()) { 5529 TouchEventData ted = new TouchEventData(); 5530 ted.mAction = action; 5531 ted.mIds = new int[1]; 5532 ted.mIds[0] = ev.getPointerId(0); 5533 ted.mPoints = new Point[1]; 5534 ted.mPoints[0] = new Point(contentX, contentY); 5535 ted.mMetaState = ev.getMetaState(); 5536 ted.mReprocess = mDeferTouchProcess; 5537 ted.mNativeLayer = nativeScrollableLayer( 5538 contentX, contentY, ted.mNativeLayerRect, null); 5539 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5540 if (mDeferTouchProcess) { 5541 // still needs to set them for compute deltaX/Y 5542 mLastTouchX = x; 5543 mLastTouchY = y; 5544 break; 5545 } 5546 if (!inFullScreenMode()) { 5547 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5548 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5549 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5550 action, 0), TAP_TIMEOUT); 5551 } 5552 } 5553 } 5554 startTouch(x, y, eventTime); 5555 break; 5556 } 5557 case MotionEvent.ACTION_MOVE: { 5558 boolean firstMove = false; 5559 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5560 >= mTouchSlopSquare) { 5561 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5562 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5563 mConfirmMove = true; 5564 firstMove = true; 5565 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5566 mTouchMode = TOUCH_INIT_MODE; 5567 } 5568 if (getSettings().supportTouchOnly()) { 5569 removeTouchHighlight(true); 5570 } 5571 } 5572 // pass the touch events from UI thread to WebCore thread 5573 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5574 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5575 TouchEventData ted = new TouchEventData(); 5576 ted.mAction = action; 5577 ted.mIds = new int[1]; 5578 ted.mIds[0] = ev.getPointerId(0); 5579 ted.mPoints = new Point[1]; 5580 ted.mPoints[0] = new Point(contentX, contentY); 5581 ted.mMetaState = ev.getMetaState(); 5582 ted.mReprocess = mDeferTouchProcess; 5583 ted.mNativeLayer = mScrollingLayer; 5584 ted.mNativeLayerRect.set(mScrollingLayerRect); 5585 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5586 mLastSentTouchTime = eventTime; 5587 if (mDeferTouchProcess) { 5588 break; 5589 } 5590 if (firstMove && !inFullScreenMode()) { 5591 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5592 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5593 action, 0), TAP_TIMEOUT); 5594 } 5595 } 5596 if (mTouchMode == TOUCH_DONE_MODE 5597 || mPreventDefault == PREVENT_DEFAULT_YES) { 5598 // no dragging during scroll zoom animation, or when prevent 5599 // default is yes 5600 break; 5601 } 5602 if (mVelocityTracker == null) { 5603 Log.e(LOGTAG, "Got null mVelocityTracker when " 5604 + "mPreventDefault = " + mPreventDefault 5605 + " mDeferTouchProcess = " + mDeferTouchProcess 5606 + " mTouchMode = " + mTouchMode); 5607 } else { 5608 mVelocityTracker.addMovement(ev); 5609 } 5610 if (mSelectingText && mSelectionStarted) { 5611 if (DebugFlags.WEB_VIEW) { 5612 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5613 } 5614 ViewParent parent = getParent(); 5615 if (parent != null) { 5616 parent.requestDisallowInterceptTouchEvent(true); 5617 } 5618 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 5619 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 5620 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 5621 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 5622 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 5623 && !mSentAutoScrollMessage) { 5624 mSentAutoScrollMessage = true; 5625 mPrivateHandler.sendEmptyMessageDelayed( 5626 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5627 } 5628 if (deltaX != 0 || deltaY != 0) { 5629 nativeExtendSelection(contentX, contentY); 5630 invalidate(); 5631 } 5632 break; 5633 } 5634 5635 if (mTouchMode != TOUCH_DRAG_MODE && 5636 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5637 5638 if (!mConfirmMove) { 5639 break; 5640 } 5641 5642 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5643 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5644 // track mLastTouchTime as we may need to do fling at 5645 // ACTION_UP 5646 mLastTouchTime = eventTime; 5647 break; 5648 } 5649 5650 // Only lock dragging to one axis if we don't have a scale in progress. 5651 // Scaling implies free-roaming movement. Note this is only ever a question 5652 // if mZoomManager.supportsPanDuringZoom() is true. 5653 final ScaleGestureDetector detector = 5654 mZoomManager.getMultiTouchGestureDetector(); 5655 if (detector == null || !detector.isInProgress()) { 5656 // if it starts nearly horizontal or vertical, enforce it 5657 int ax = Math.abs(deltaX); 5658 int ay = Math.abs(deltaY); 5659 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5660 mSnapScrollMode = SNAP_X; 5661 mSnapPositive = deltaX > 0; 5662 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5663 mSnapScrollMode = SNAP_Y; 5664 mSnapPositive = deltaY > 0; 5665 } 5666 } 5667 5668 mTouchMode = TOUCH_DRAG_MODE; 5669 mLastTouchX = x; 5670 mLastTouchY = y; 5671 deltaX = 0; 5672 deltaY = 0; 5673 5674 startScrollingLayer(x, y); 5675 startDrag(); 5676 } 5677 5678 // do pan 5679 boolean done = false; 5680 boolean keepScrollBarsVisible = false; 5681 if (deltaX == 0 && deltaY == 0) { 5682 keepScrollBarsVisible = done = true; 5683 } else { 5684 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5685 int ax = Math.abs(deltaX); 5686 int ay = Math.abs(deltaY); 5687 if (mSnapScrollMode == SNAP_X) { 5688 // radical change means getting out of snap mode 5689 if (ay > MAX_SLOPE_FOR_DIAG * ax 5690 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5691 mSnapScrollMode = SNAP_NONE; 5692 } 5693 // reverse direction means lock in the snap mode 5694 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5695 (mSnapPositive 5696 ? deltaX < -mMinLockSnapReverseDistance 5697 : deltaX > mMinLockSnapReverseDistance)) { 5698 mSnapScrollMode |= SNAP_LOCK; 5699 } 5700 } else { 5701 // radical change means getting out of snap mode 5702 if (ax > MAX_SLOPE_FOR_DIAG * ay 5703 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5704 mSnapScrollMode = SNAP_NONE; 5705 } 5706 // reverse direction means lock in the snap mode 5707 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5708 (mSnapPositive 5709 ? deltaY < -mMinLockSnapReverseDistance 5710 : deltaY > mMinLockSnapReverseDistance)) { 5711 mSnapScrollMode |= SNAP_LOCK; 5712 } 5713 } 5714 } 5715 if (mSnapScrollMode != SNAP_NONE) { 5716 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5717 deltaY = 0; 5718 } else { 5719 deltaX = 0; 5720 } 5721 } 5722 if ((deltaX | deltaY) != 0) { 5723 if (deltaX != 0) { 5724 mLastTouchX = x; 5725 } 5726 if (deltaY != 0) { 5727 mLastTouchY = y; 5728 } 5729 mHeldMotionless = MOTIONLESS_FALSE; 5730 } 5731 mLastTouchTime = eventTime; 5732 } 5733 5734 doDrag(deltaX, deltaY); 5735 5736 // Turn off scrollbars when dragging a layer. 5737 if (keepScrollBarsVisible && 5738 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5739 if (mHeldMotionless != MOTIONLESS_TRUE) { 5740 mHeldMotionless = MOTIONLESS_TRUE; 5741 invalidate(); 5742 } 5743 // keep the scrollbar on the screen even there is no scroll 5744 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5745 false); 5746 // return false to indicate that we can't pan out of the 5747 // view space 5748 return !done; 5749 } 5750 break; 5751 } 5752 case MotionEvent.ACTION_UP: { 5753 if (!isFocused()) requestFocus(); 5754 // pass the touch events from UI thread to WebCore thread 5755 if (shouldForwardTouchEvent()) { 5756 TouchEventData ted = new TouchEventData(); 5757 ted.mIds = new int[1]; 5758 ted.mIds[0] = ev.getPointerId(0); 5759 ted.mAction = action; 5760 ted.mPoints = new Point[1]; 5761 ted.mPoints[0] = new Point(contentX, contentY); 5762 ted.mMetaState = ev.getMetaState(); 5763 ted.mReprocess = mDeferTouchProcess; 5764 ted.mNativeLayer = mScrollingLayer; 5765 ted.mNativeLayerRect.set(mScrollingLayerRect); 5766 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5767 } 5768 mLastTouchUpTime = eventTime; 5769 if (mSentAutoScrollMessage) { 5770 mAutoScrollX = mAutoScrollY = 0; 5771 } 5772 switch (mTouchMode) { 5773 case TOUCH_DOUBLE_TAP_MODE: // double tap 5774 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5775 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5776 if (inFullScreenMode() || mDeferTouchProcess) { 5777 TouchEventData ted = new TouchEventData(); 5778 ted.mIds = new int[1]; 5779 ted.mIds[0] = ev.getPointerId(0); 5780 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5781 ted.mPoints = new Point[1]; 5782 ted.mPoints[0] = new Point(contentX, contentY); 5783 ted.mMetaState = ev.getMetaState(); 5784 ted.mReprocess = mDeferTouchProcess; 5785 ted.mNativeLayer = nativeScrollableLayer( 5786 contentX, contentY, 5787 ted.mNativeLayerRect, null); 5788 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5789 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5790 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5791 mTouchMode = TOUCH_DONE_MODE; 5792 } 5793 break; 5794 case TOUCH_INIT_MODE: // tap 5795 case TOUCH_SHORTPRESS_START_MODE: 5796 case TOUCH_SHORTPRESS_MODE: 5797 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5798 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5799 if (mConfirmMove) { 5800 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5801 " WebCore's response for touch down."); 5802 if (mPreventDefault != PREVENT_DEFAULT_YES 5803 && (computeMaxScrollX() > 0 5804 || computeMaxScrollY() > 0)) { 5805 // If the user has performed a very quick touch 5806 // sequence it is possible that we may get here 5807 // before WebCore has had a chance to process the events. 5808 // In this case, any call to preventDefault in the 5809 // JS touch handler will not have been executed yet. 5810 // Hence we will see both the UI (now) and WebCore 5811 // (when context switches) handling the event, 5812 // regardless of whether the web developer actually 5813 // doeses preventDefault in their touch handler. This 5814 // is the nature of our asynchronous touch model. 5815 5816 // we will not rewrite drag code here, but we 5817 // will try fling if it applies. 5818 WebViewCore.reducePriority(); 5819 // to get better performance, pause updating the 5820 // picture 5821 WebViewCore.pauseUpdatePicture(mWebViewCore); 5822 // fall through to TOUCH_DRAG_MODE 5823 } else { 5824 // WebKit may consume the touch event and modify 5825 // DOM. drawContentPicture() will be called with 5826 // animateSroll as true for better performance. 5827 // Force redraw in high-quality. 5828 invalidate(); 5829 break; 5830 } 5831 } else { 5832 if (mSelectingText) { 5833 // tapping on selection or controls does nothing 5834 if (!nativeHitSelection(contentX, contentY)) { 5835 selectionDone(); 5836 } 5837 break; 5838 } 5839 // only trigger double tap if the WebView is 5840 // scalable 5841 if (mTouchMode == TOUCH_INIT_MODE 5842 && (canZoomIn() || canZoomOut())) { 5843 mPrivateHandler.sendEmptyMessageDelayed( 5844 RELEASE_SINGLE_TAP, ViewConfiguration 5845 .getDoubleTapTimeout()); 5846 } else { 5847 doShortPress(); 5848 } 5849 break; 5850 } 5851 case TOUCH_DRAG_MODE: 5852 case TOUCH_DRAG_LAYER_MODE: 5853 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5854 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5855 // if the user waits a while w/o moving before the 5856 // up, we don't want to do a fling 5857 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5858 if (mVelocityTracker == null) { 5859 Log.e(LOGTAG, "Got null mVelocityTracker when " 5860 + "mPreventDefault = " 5861 + mPreventDefault 5862 + " mDeferTouchProcess = " 5863 + mDeferTouchProcess); 5864 } else { 5865 mVelocityTracker.addMovement(ev); 5866 } 5867 // set to MOTIONLESS_IGNORE so that it won't keep 5868 // removing and sending message in 5869 // drawCoreAndCursorRing() 5870 mHeldMotionless = MOTIONLESS_IGNORE; 5871 doFling(); 5872 break; 5873 } else { 5874 if (mScroller.springBack(mScrollX, mScrollY, 0, 5875 computeMaxScrollX(), 0, 5876 computeMaxScrollY())) { 5877 invalidate(); 5878 } 5879 } 5880 // redraw in high-quality, as we're done dragging 5881 mHeldMotionless = MOTIONLESS_TRUE; 5882 invalidate(); 5883 // fall through 5884 case TOUCH_DRAG_START_MODE: 5885 // TOUCH_DRAG_START_MODE should not happen for the real 5886 // device as we almost certain will get a MOVE. But this 5887 // is possible on emulator. 5888 mLastVelocity = 0; 5889 WebViewCore.resumePriority(); 5890 if (!mSelectingText) { 5891 WebViewCore.resumeUpdatePicture(mWebViewCore); 5892 } 5893 break; 5894 } 5895 stopTouch(); 5896 break; 5897 } 5898 case MotionEvent.ACTION_CANCEL: { 5899 if (mTouchMode == TOUCH_DRAG_MODE) { 5900 mScroller.springBack(mScrollX, mScrollY, 0, 5901 computeMaxScrollX(), 0, computeMaxScrollY()); 5902 invalidate(); 5903 } 5904 cancelWebCoreTouchEvent(contentX, contentY, false); 5905 cancelTouch(); 5906 break; 5907 } 5908 } 5909 return true; 5910 } 5911 5912 private void passMultiTouchToWebKit(MotionEvent ev) { 5913 TouchEventData ted = new TouchEventData(); 5914 ted.mAction = ev.getActionMasked(); 5915 final int count = ev.getPointerCount(); 5916 ted.mIds = new int[count]; 5917 ted.mPoints = new Point[count]; 5918 for (int c = 0; c < count; c++) { 5919 ted.mIds[c] = ev.getPointerId(c); 5920 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5921 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5922 ted.mPoints[c] = new Point(x, y); 5923 } 5924 ted.mMetaState = ev.getMetaState(); 5925 ted.mReprocess = true; 5926 ted.mMotionEvent = MotionEvent.obtain(ev); 5927 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5928 cancelLongPress(); 5929 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5930 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5931 } 5932 5933 private void handleMultiTouchInWebView(MotionEvent ev) { 5934 if (DebugFlags.WEB_VIEW) { 5935 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 5936 + " mTouchMode=" + mTouchMode 5937 + " numPointers=" + ev.getPointerCount() 5938 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 5939 } 5940 5941 final ScaleGestureDetector detector = 5942 mZoomManager.getMultiTouchGestureDetector(); 5943 5944 // A few apps use WebView but don't instantiate gesture detector. 5945 // We don't need to support multi touch for them. 5946 if (detector == null) return; 5947 5948 float x = ev.getX(); 5949 float y = ev.getY(); 5950 5951 if (!detector.isInProgress() && 5952 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 5953 // Insert a fake pointer down event in order to start 5954 // the zoom scale detector. 5955 MotionEvent temp = MotionEvent.obtain(ev); 5956 // Clear the original event and set it to 5957 // ACTION_POINTER_DOWN. 5958 try { 5959 temp.setAction(temp.getAction() & 5960 ~MotionEvent.ACTION_MASK | 5961 MotionEvent.ACTION_POINTER_DOWN); 5962 detector.onTouchEvent(temp); 5963 } finally { 5964 temp.recycle(); 5965 } 5966 } 5967 5968 detector.onTouchEvent(ev); 5969 5970 if (detector.isInProgress()) { 5971 if (DebugFlags.WEB_VIEW) { 5972 Log.v(LOGTAG, "detector is in progress"); 5973 } 5974 mLastTouchTime = ev.getEventTime(); 5975 x = detector.getFocusX(); 5976 y = detector.getFocusY(); 5977 5978 cancelLongPress(); 5979 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5980 if (!mZoomManager.supportsPanDuringZoom()) { 5981 return; 5982 } 5983 mTouchMode = TOUCH_DRAG_MODE; 5984 if (mVelocityTracker == null) { 5985 mVelocityTracker = VelocityTracker.obtain(); 5986 } 5987 } 5988 5989 int action = ev.getActionMasked(); 5990 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5991 cancelTouch(); 5992 action = MotionEvent.ACTION_DOWN; 5993 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5994 // set mLastTouchX/Y to the remaining point 5995 mLastTouchX = Math.round(x); 5996 mLastTouchY = Math.round(y); 5997 mIsHandlingMultiTouch = false; 5998 } else if (action == MotionEvent.ACTION_MOVE) { 5999 // negative x or y indicate it is on the edge, skip it. 6000 if (x < 0 || y < 0) { 6001 return; 6002 } 6003 } 6004 6005 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6006 } 6007 6008 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6009 if (shouldForwardTouchEvent()) { 6010 if (removeEvents) { 6011 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6012 } 6013 TouchEventData ted = new TouchEventData(); 6014 ted.mIds = new int[1]; 6015 ted.mIds[0] = 0; 6016 ted.mPoints = new Point[1]; 6017 ted.mPoints[0] = new Point(x, y); 6018 ted.mAction = MotionEvent.ACTION_CANCEL; 6019 ted.mNativeLayer = nativeScrollableLayer( 6020 x, y, ted.mNativeLayerRect, null); 6021 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6022 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6023 } 6024 } 6025 6026 private void startTouch(float x, float y, long eventTime) { 6027 // Remember where the motion event started 6028 mLastTouchX = Math.round(x); 6029 mLastTouchY = Math.round(y); 6030 mLastTouchTime = eventTime; 6031 mVelocityTracker = VelocityTracker.obtain(); 6032 mSnapScrollMode = SNAP_NONE; 6033 } 6034 6035 private void startDrag() { 6036 WebViewCore.reducePriority(); 6037 // to get better performance, pause updating the picture 6038 WebViewCore.pauseUpdatePicture(mWebViewCore); 6039 if (!mDragFromTextInput) { 6040 nativeHideCursor(); 6041 } 6042 6043 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6044 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6045 mZoomManager.invokeZoomPicker(); 6046 } 6047 } 6048 6049 private void doDrag(int deltaX, int deltaY) { 6050 if ((deltaX | deltaY) != 0) { 6051 int oldX = mScrollX; 6052 int oldY = mScrollY; 6053 int rangeX = computeMaxScrollX(); 6054 int rangeY = computeMaxScrollY(); 6055 int overscrollDistance = mOverscrollDistance; 6056 6057 // Check for the original scrolling layer in case we change 6058 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6059 // reached the edge of a layer but mScrollingLayer will be non-zero 6060 // if we initiated the drag on a layer. 6061 if (mScrollingLayer != 0) { 6062 final int contentX = viewToContentDimension(deltaX); 6063 final int contentY = viewToContentDimension(deltaY); 6064 6065 // Check the scrolling bounds to see if we will actually do any 6066 // scrolling. The rectangle is in document coordinates. 6067 final int maxX = mScrollingLayerRect.right; 6068 final int maxY = mScrollingLayerRect.bottom; 6069 final int resultX = Math.max(0, 6070 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6071 final int resultY = Math.max(0, 6072 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6073 6074 if (resultX != mScrollingLayerRect.left || 6075 resultY != mScrollingLayerRect.top) { 6076 // In case we switched to dragging the page. 6077 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6078 deltaX = contentX; 6079 deltaY = contentY; 6080 oldX = mScrollingLayerRect.left; 6081 oldY = mScrollingLayerRect.top; 6082 rangeX = maxX; 6083 rangeY = maxY; 6084 } else { 6085 // Scroll the main page if we are not going to scroll the 6086 // layer. This does not reset mScrollingLayer in case the 6087 // user changes directions and the layer can scroll the 6088 // other way. 6089 mTouchMode = TOUCH_DRAG_MODE; 6090 } 6091 } 6092 6093 if (mOverScrollGlow != null) { 6094 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6095 } 6096 6097 overScrollBy(deltaX, deltaY, oldX, oldY, 6098 rangeX, rangeY, 6099 mOverscrollDistance, mOverscrollDistance, true); 6100 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6101 invalidate(); 6102 } 6103 } 6104 mZoomManager.keepZoomPickerVisible(); 6105 } 6106 6107 private void stopTouch() { 6108 // we also use mVelocityTracker == null to tell us that we are 6109 // not "moving around", so we can take the slower/prettier 6110 // mode in the drawing code 6111 if (mVelocityTracker != null) { 6112 mVelocityTracker.recycle(); 6113 mVelocityTracker = null; 6114 } 6115 6116 // Release any pulled glows 6117 if (mOverScrollGlow != null) { 6118 mOverScrollGlow.releaseAll(); 6119 } 6120 } 6121 6122 private void cancelTouch() { 6123 // we also use mVelocityTracker == null to tell us that we are 6124 // not "moving around", so we can take the slower/prettier 6125 // mode in the drawing code 6126 if (mVelocityTracker != null) { 6127 mVelocityTracker.recycle(); 6128 mVelocityTracker = null; 6129 } 6130 6131 if ((mTouchMode == TOUCH_DRAG_MODE 6132 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6133 WebViewCore.resumePriority(); 6134 WebViewCore.resumeUpdatePicture(mWebViewCore); 6135 } 6136 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6137 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6138 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6139 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6140 if (getSettings().supportTouchOnly()) { 6141 removeTouchHighlight(true); 6142 } 6143 mHeldMotionless = MOTIONLESS_TRUE; 6144 mTouchMode = TOUCH_DONE_MODE; 6145 nativeHideCursor(); 6146 } 6147 6148 private long mTrackballFirstTime = 0; 6149 private long mTrackballLastTime = 0; 6150 private float mTrackballRemainsX = 0.0f; 6151 private float mTrackballRemainsY = 0.0f; 6152 private int mTrackballXMove = 0; 6153 private int mTrackballYMove = 0; 6154 private boolean mSelectingText = false; 6155 private boolean mSelectionStarted = false; 6156 private boolean mExtendSelection = false; 6157 private boolean mDrawSelectionPointer = false; 6158 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6159 private static final int TRACKBALL_TIMEOUT = 200; 6160 private static final int TRACKBALL_WAIT = 100; 6161 private static final int TRACKBALL_SCALE = 400; 6162 private static final int TRACKBALL_SCROLL_COUNT = 5; 6163 private static final int TRACKBALL_MOVE_COUNT = 10; 6164 private static final int TRACKBALL_MULTIPLIER = 3; 6165 private static final int SELECT_CURSOR_OFFSET = 16; 6166 private static final int SELECT_SCROLL = 5; 6167 private int mSelectX = 0; 6168 private int mSelectY = 0; 6169 private boolean mFocusSizeChanged = false; 6170 private boolean mTrackballDown = false; 6171 private long mTrackballUpTime = 0; 6172 private long mLastCursorTime = 0; 6173 private Rect mLastCursorBounds; 6174 6175 // Set by default; BrowserActivity clears to interpret trackball data 6176 // directly for movement. Currently, the framework only passes 6177 // arrow key events, not trackball events, from one child to the next 6178 private boolean mMapTrackballToArrowKeys = true; 6179 6180 public void setMapTrackballToArrowKeys(boolean setMap) { 6181 mMapTrackballToArrowKeys = setMap; 6182 } 6183 6184 void resetTrackballTime() { 6185 mTrackballLastTime = 0; 6186 } 6187 6188 @Override 6189 public boolean onTrackballEvent(MotionEvent ev) { 6190 long time = ev.getEventTime(); 6191 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6192 if (ev.getY() > 0) pageDown(true); 6193 if (ev.getY() < 0) pageUp(true); 6194 return true; 6195 } 6196 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6197 if (mSelectingText) { 6198 return true; // discard press if copy in progress 6199 } 6200 mTrackballDown = true; 6201 if (mNativeClass == 0) { 6202 return false; 6203 } 6204 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6205 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6206 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6207 nativeSelectBestAt(mLastCursorBounds); 6208 } 6209 if (DebugFlags.WEB_VIEW) { 6210 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6211 + " time=" + time 6212 + " mLastCursorTime=" + mLastCursorTime); 6213 } 6214 if (isInTouchMode()) requestFocusFromTouch(); 6215 return false; // let common code in onKeyDown at it 6216 } 6217 if (ev.getAction() == MotionEvent.ACTION_UP) { 6218 // LONG_PRESS_CENTER is set in common onKeyDown 6219 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6220 mTrackballDown = false; 6221 mTrackballUpTime = time; 6222 if (mSelectingText) { 6223 if (mExtendSelection) { 6224 copySelection(); 6225 selectionDone(); 6226 } else { 6227 mExtendSelection = true; 6228 nativeSetExtendSelection(); 6229 invalidate(); // draw the i-beam instead of the arrow 6230 } 6231 return true; // discard press if copy in progress 6232 } 6233 if (DebugFlags.WEB_VIEW) { 6234 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6235 + " time=" + time 6236 ); 6237 } 6238 return false; // let common code in onKeyUp at it 6239 } 6240 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6241 AccessibilityManager.getInstance(mContext).isEnabled()) { 6242 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6243 return false; 6244 } 6245 if (mTrackballDown) { 6246 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6247 return true; // discard move if trackball is down 6248 } 6249 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6250 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6251 return true; 6252 } 6253 // TODO: alternatively we can do panning as touch does 6254 switchOutDrawHistory(); 6255 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6256 if (DebugFlags.WEB_VIEW) { 6257 Log.v(LOGTAG, "onTrackballEvent time=" 6258 + time + " last=" + mTrackballLastTime); 6259 } 6260 mTrackballFirstTime = time; 6261 mTrackballXMove = mTrackballYMove = 0; 6262 } 6263 mTrackballLastTime = time; 6264 if (DebugFlags.WEB_VIEW) { 6265 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6266 } 6267 mTrackballRemainsX += ev.getX(); 6268 mTrackballRemainsY += ev.getY(); 6269 doTrackball(time, ev.getMetaState()); 6270 return true; 6271 } 6272 6273 void moveSelection(float xRate, float yRate) { 6274 if (mNativeClass == 0) 6275 return; 6276 int width = getViewWidth(); 6277 int height = getViewHeight(); 6278 mSelectX += xRate; 6279 mSelectY += yRate; 6280 int maxX = width + mScrollX; 6281 int maxY = height + mScrollY; 6282 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6283 , mSelectX)); 6284 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6285 , mSelectY)); 6286 if (DebugFlags.WEB_VIEW) { 6287 Log.v(LOGTAG, "moveSelection" 6288 + " mSelectX=" + mSelectX 6289 + " mSelectY=" + mSelectY 6290 + " mScrollX=" + mScrollX 6291 + " mScrollY=" + mScrollY 6292 + " xRate=" + xRate 6293 + " yRate=" + yRate 6294 ); 6295 } 6296 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6297 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6298 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6299 : 0; 6300 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6301 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6302 : 0; 6303 pinScrollBy(scrollX, scrollY, true, 0); 6304 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6305 requestRectangleOnScreen(select); 6306 invalidate(); 6307 } 6308 6309 private int scaleTrackballX(float xRate, int width) { 6310 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6311 int nextXMove = xMove; 6312 if (xMove > 0) { 6313 if (xMove > mTrackballXMove) { 6314 xMove -= mTrackballXMove; 6315 } 6316 } else if (xMove < mTrackballXMove) { 6317 xMove -= mTrackballXMove; 6318 } 6319 mTrackballXMove = nextXMove; 6320 return xMove; 6321 } 6322 6323 private int scaleTrackballY(float yRate, int height) { 6324 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6325 int nextYMove = yMove; 6326 if (yMove > 0) { 6327 if (yMove > mTrackballYMove) { 6328 yMove -= mTrackballYMove; 6329 } 6330 } else if (yMove < mTrackballYMove) { 6331 yMove -= mTrackballYMove; 6332 } 6333 mTrackballYMove = nextYMove; 6334 return yMove; 6335 } 6336 6337 private int keyCodeToSoundsEffect(int keyCode) { 6338 switch(keyCode) { 6339 case KeyEvent.KEYCODE_DPAD_UP: 6340 return SoundEffectConstants.NAVIGATION_UP; 6341 case KeyEvent.KEYCODE_DPAD_RIGHT: 6342 return SoundEffectConstants.NAVIGATION_RIGHT; 6343 case KeyEvent.KEYCODE_DPAD_DOWN: 6344 return SoundEffectConstants.NAVIGATION_DOWN; 6345 case KeyEvent.KEYCODE_DPAD_LEFT: 6346 return SoundEffectConstants.NAVIGATION_LEFT; 6347 } 6348 throw new IllegalArgumentException("keyCode must be one of " + 6349 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6350 "KEYCODE_DPAD_LEFT}."); 6351 } 6352 6353 private void doTrackball(long time, int metaState) { 6354 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6355 if (elapsed == 0) { 6356 elapsed = TRACKBALL_TIMEOUT; 6357 } 6358 float xRate = mTrackballRemainsX * 1000 / elapsed; 6359 float yRate = mTrackballRemainsY * 1000 / elapsed; 6360 int viewWidth = getViewWidth(); 6361 int viewHeight = getViewHeight(); 6362 if (mSelectingText) { 6363 if (!mDrawSelectionPointer) { 6364 // The last selection was made by touch, disabling drawing the 6365 // selection pointer. Allow the trackball to adjust the 6366 // position of the touch control. 6367 mSelectX = contentToViewX(nativeSelectionX()); 6368 mSelectY = contentToViewY(nativeSelectionY()); 6369 mDrawSelectionPointer = mExtendSelection = true; 6370 nativeSetExtendSelection(); 6371 } 6372 moveSelection(scaleTrackballX(xRate, viewWidth), 6373 scaleTrackballY(yRate, viewHeight)); 6374 mTrackballRemainsX = mTrackballRemainsY = 0; 6375 return; 6376 } 6377 float ax = Math.abs(xRate); 6378 float ay = Math.abs(yRate); 6379 float maxA = Math.max(ax, ay); 6380 if (DebugFlags.WEB_VIEW) { 6381 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6382 + " xRate=" + xRate 6383 + " yRate=" + yRate 6384 + " mTrackballRemainsX=" + mTrackballRemainsX 6385 + " mTrackballRemainsY=" + mTrackballRemainsY); 6386 } 6387 int width = mContentWidth - viewWidth; 6388 int height = mContentHeight - viewHeight; 6389 if (width < 0) width = 0; 6390 if (height < 0) height = 0; 6391 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6392 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6393 maxA = Math.max(ax, ay); 6394 int count = Math.max(0, (int) maxA); 6395 int oldScrollX = mScrollX; 6396 int oldScrollY = mScrollY; 6397 if (count > 0) { 6398 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6399 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6400 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6401 KeyEvent.KEYCODE_DPAD_RIGHT; 6402 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6403 if (DebugFlags.WEB_VIEW) { 6404 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6405 + " count=" + count 6406 + " mTrackballRemainsX=" + mTrackballRemainsX 6407 + " mTrackballRemainsY=" + mTrackballRemainsY); 6408 } 6409 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6410 for (int i = 0; i < count; i++) { 6411 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6412 } 6413 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6414 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6415 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6416 } 6417 mTrackballRemainsX = mTrackballRemainsY = 0; 6418 } 6419 if (count >= TRACKBALL_SCROLL_COUNT) { 6420 int xMove = scaleTrackballX(xRate, width); 6421 int yMove = scaleTrackballY(yRate, height); 6422 if (DebugFlags.WEB_VIEW) { 6423 Log.v(LOGTAG, "doTrackball pinScrollBy" 6424 + " count=" + count 6425 + " xMove=" + xMove + " yMove=" + yMove 6426 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6427 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6428 ); 6429 } 6430 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6431 xMove = 0; 6432 } 6433 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6434 yMove = 0; 6435 } 6436 if (xMove != 0 || yMove != 0) { 6437 pinScrollBy(xMove, yMove, true, 0); 6438 } 6439 } 6440 } 6441 6442 /** 6443 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6444 * @return Maximum horizontal scroll position within real content 6445 */ 6446 int computeMaxScrollX() { 6447 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6448 } 6449 6450 /** 6451 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6452 * @return Maximum vertical scroll position within real content 6453 */ 6454 int computeMaxScrollY() { 6455 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6456 - getViewHeightWithTitle(), 0); 6457 } 6458 6459 boolean updateScrollCoordinates(int x, int y) { 6460 int oldX = mScrollX; 6461 int oldY = mScrollY; 6462 mScrollX = x; 6463 mScrollY = y; 6464 if (oldX != mScrollX || oldY != mScrollY) { 6465 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6466 return true; 6467 } else { 6468 return false; 6469 } 6470 } 6471 6472 public void flingScroll(int vx, int vy) { 6473 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6474 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6475 invalidate(); 6476 } 6477 6478 private void doFling() { 6479 if (mVelocityTracker == null) { 6480 return; 6481 } 6482 int maxX = computeMaxScrollX(); 6483 int maxY = computeMaxScrollY(); 6484 6485 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6486 int vx = (int) mVelocityTracker.getXVelocity(); 6487 int vy = (int) mVelocityTracker.getYVelocity(); 6488 6489 int scrollX = mScrollX; 6490 int scrollY = mScrollY; 6491 int overscrollDistance = mOverscrollDistance; 6492 int overflingDistance = mOverflingDistance; 6493 6494 // Use the layer's scroll data if applicable. 6495 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6496 scrollX = mScrollingLayerRect.left; 6497 scrollY = mScrollingLayerRect.top; 6498 maxX = mScrollingLayerRect.right; 6499 maxY = mScrollingLayerRect.bottom; 6500 // No overscrolling for layers. 6501 overscrollDistance = overflingDistance = 0; 6502 } 6503 6504 if (mSnapScrollMode != SNAP_NONE) { 6505 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6506 vy = 0; 6507 } else { 6508 vx = 0; 6509 } 6510 } 6511 if (true /* EMG release: make our fling more like Maps' */) { 6512 // maps cuts their velocity in half 6513 vx = vx * 3 / 4; 6514 vy = vy * 3 / 4; 6515 } 6516 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6517 WebViewCore.resumePriority(); 6518 if (!mSelectingText) { 6519 WebViewCore.resumeUpdatePicture(mWebViewCore); 6520 } 6521 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6522 invalidate(); 6523 } 6524 return; 6525 } 6526 float currentVelocity = mScroller.getCurrVelocity(); 6527 float velocity = (float) Math.hypot(vx, vy); 6528 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6529 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6530 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6531 - Math.atan2(vy, vx))); 6532 final float circle = (float) (Math.PI) * 2.0f; 6533 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6534 vx += currentVelocity * mLastVelX / mLastVelocity; 6535 vy += currentVelocity * mLastVelY / mLastVelocity; 6536 velocity = (float) Math.hypot(vx, vy); 6537 if (DebugFlags.WEB_VIEW) { 6538 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6539 } 6540 } else if (DebugFlags.WEB_VIEW) { 6541 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6542 } 6543 } else if (DebugFlags.WEB_VIEW) { 6544 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6545 + " current=" + currentVelocity 6546 + " vx=" + vx + " vy=" + vy 6547 + " maxX=" + maxX + " maxY=" + maxY 6548 + " scrollX=" + scrollX + " scrollY=" + scrollY 6549 + " layer=" + mScrollingLayer); 6550 } 6551 6552 // Allow sloppy flings without overscrolling at the edges. 6553 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6554 vx = 0; 6555 } 6556 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6557 vy = 0; 6558 } 6559 6560 if (overscrollDistance < overflingDistance) { 6561 if ((vx > 0 && scrollX == -overscrollDistance) || 6562 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6563 vx = 0; 6564 } 6565 if ((vy > 0 && scrollY == -overscrollDistance) || 6566 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6567 vy = 0; 6568 } 6569 } 6570 6571 mLastVelX = vx; 6572 mLastVelY = vy; 6573 mLastVelocity = velocity; 6574 6575 // no horizontal overscroll if the content just fits 6576 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6577 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6578 // Duration is calculated based on velocity. With range boundaries and overscroll 6579 // we may not know how long the final animation will take. (Hence the deprecation 6580 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6581 // resumes during this effect we will take a performance hit. See computeScroll; 6582 // we resume webcore there when the animation is finished. 6583 final int time = mScroller.getDuration(); 6584 6585 // Suppress scrollbars for layer scrolling. 6586 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6587 awakenScrollBars(time); 6588 } 6589 6590 invalidate(); 6591 } 6592 6593 /** 6594 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6595 * in charge of installing this view to the view hierarchy. This view will 6596 * become visible when the user starts scrolling via touch and fade away if 6597 * the user does not interact with it. 6598 * <p/> 6599 * API version 3 introduces a built-in zoom mechanism that is shown 6600 * automatically by the MapView. This is the preferred approach for 6601 * showing the zoom UI. 6602 * 6603 * @deprecated The built-in zoom mechanism is preferred, see 6604 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6605 */ 6606 @Deprecated 6607 public View getZoomControls() { 6608 if (!getSettings().supportZoom()) { 6609 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6610 return null; 6611 } 6612 return mZoomManager.getExternalZoomPicker(); 6613 } 6614 6615 void dismissZoomControl() { 6616 mZoomManager.dismissZoomPicker(); 6617 } 6618 6619 float getDefaultZoomScale() { 6620 return mZoomManager.getDefaultScale(); 6621 } 6622 6623 /** 6624 * @return TRUE if the WebView can be zoomed in. 6625 */ 6626 public boolean canZoomIn() { 6627 return mZoomManager.canZoomIn(); 6628 } 6629 6630 /** 6631 * @return TRUE if the WebView can be zoomed out. 6632 */ 6633 public boolean canZoomOut() { 6634 return mZoomManager.canZoomOut(); 6635 } 6636 6637 /** 6638 * Perform zoom in in the webview 6639 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6640 */ 6641 public boolean zoomIn() { 6642 return mZoomManager.zoomIn(); 6643 } 6644 6645 /** 6646 * Perform zoom out in the webview 6647 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6648 */ 6649 public boolean zoomOut() { 6650 return mZoomManager.zoomOut(); 6651 } 6652 6653 private void updateSelection() { 6654 if (mNativeClass == 0) { 6655 return; 6656 } 6657 // mLastTouchX and mLastTouchY are the point in the current viewport 6658 int contentX = viewToContentX(mLastTouchX + mScrollX); 6659 int contentY = viewToContentY(mLastTouchY + mScrollY); 6660 int slop = viewToContentDimension(mNavSlop); 6661 Rect rect = new Rect(contentX - slop, contentY - slop, 6662 contentX + slop, contentY + slop); 6663 nativeSelectBestAt(rect); 6664 mInitialHitTestResult = hitTestResult(null); 6665 } 6666 6667 /** 6668 * Scroll the focused text field to match the WebTextView 6669 * @param xPercent New x position of the WebTextView from 0 to 1. 6670 */ 6671 /*package*/ void scrollFocusedTextInputX(float xPercent) { 6672 if (!inEditingMode() || mWebViewCore == null) { 6673 return; 6674 } 6675 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 6676 new Float(xPercent)); 6677 } 6678 6679 /** 6680 * Scroll the focused textarea vertically to match the WebTextView 6681 * @param y New y position of the WebTextView in view coordinates 6682 */ 6683 /* package */ void scrollFocusedTextInputY(int y) { 6684 if (!inEditingMode() || mWebViewCore == null) { 6685 return; 6686 } 6687 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 6688 } 6689 6690 /** 6691 * Set our starting point and time for a drag from the WebTextView. 6692 */ 6693 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6694 if (!inEditingMode()) { 6695 return; 6696 } 6697 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 6698 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 6699 mLastTouchTime = eventTime; 6700 if (!mScroller.isFinished()) { 6701 abortAnimation(); 6702 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6703 } 6704 mSnapScrollMode = SNAP_NONE; 6705 mVelocityTracker = VelocityTracker.obtain(); 6706 mTouchMode = TOUCH_DRAG_START_MODE; 6707 } 6708 6709 /** 6710 * Given a motion event from the WebTextView, set its location to our 6711 * coordinates, and handle the event. 6712 */ 6713 /*package*/ boolean textFieldDrag(MotionEvent event) { 6714 if (!inEditingMode()) { 6715 return false; 6716 } 6717 mDragFromTextInput = true; 6718 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6719 (float) (mWebTextView.getTop() - mScrollY)); 6720 boolean result = onTouchEvent(event); 6721 mDragFromTextInput = false; 6722 return result; 6723 } 6724 6725 /** 6726 * Due a touch up from a WebTextView. This will be handled by webkit to 6727 * change the selection. 6728 * @param event MotionEvent in the WebTextView's coordinates. 6729 */ 6730 /*package*/ void touchUpOnTextField(MotionEvent event) { 6731 if (!inEditingMode()) { 6732 return; 6733 } 6734 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6735 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6736 int slop = viewToContentDimension(mNavSlop); 6737 nativeMotionUp(x, y, slop); 6738 } 6739 6740 /** 6741 * Called when pressing the center key or trackball on a textfield. 6742 */ 6743 /*package*/ void centerKeyPressOnTextField() { 6744 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6745 nativeCursorNodePointer()); 6746 } 6747 6748 private void doShortPress() { 6749 if (mNativeClass == 0) { 6750 return; 6751 } 6752 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6753 return; 6754 } 6755 mTouchMode = TOUCH_DONE_MODE; 6756 switchOutDrawHistory(); 6757 // mLastTouchX and mLastTouchY are the point in the current viewport 6758 int contentX = viewToContentX(mLastTouchX + mScrollX); 6759 int contentY = viewToContentY(mLastTouchY + mScrollY); 6760 int slop = viewToContentDimension(mNavSlop); 6761 if (getSettings().supportTouchOnly()) { 6762 removeTouchHighlight(false); 6763 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6764 // use "0" as generation id to inform WebKit to use the same x/y as 6765 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6766 touchUpData.mMoveGeneration = 0; 6767 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6768 } else if (nativePointInNavCache(contentX, contentY, slop)) { 6769 WebViewCore.MotionUpData motionUpData = new WebViewCore 6770 .MotionUpData(); 6771 motionUpData.mFrame = nativeCacheHitFramePointer(); 6772 motionUpData.mNode = nativeCacheHitNodePointer(); 6773 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6774 motionUpData.mX = contentX; 6775 motionUpData.mY = contentY; 6776 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6777 motionUpData); 6778 } else { 6779 doMotionUp(contentX, contentY); 6780 } 6781 } 6782 6783 private void doMotionUp(int contentX, int contentY) { 6784 int slop = viewToContentDimension(mNavSlop); 6785 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 6786 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6787 } 6788 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6789 playSoundEffect(SoundEffectConstants.CLICK); 6790 } 6791 } 6792 6793 /** 6794 * Returns plugin bounds if x/y in content coordinates corresponds to a 6795 * plugin. Otherwise a NULL rectangle is returned. 6796 */ 6797 Rect getPluginBounds(int x, int y) { 6798 int slop = viewToContentDimension(mNavSlop); 6799 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 6800 return nativeCacheHitNodeBounds(); 6801 } else { 6802 return null; 6803 } 6804 } 6805 6806 /* 6807 * Return true if the rect (e.g. plugin) is fully visible and maximized 6808 * inside the WebView. 6809 */ 6810 boolean isRectFitOnScreen(Rect rect) { 6811 final int rectWidth = rect.width(); 6812 final int rectHeight = rect.height(); 6813 final int viewWidth = getViewWidth(); 6814 final int viewHeight = getViewHeightWithTitle(); 6815 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 6816 scale = mZoomManager.computeScaleWithLimits(scale); 6817 return !mZoomManager.willScaleTriggerZoom(scale) 6818 && contentToViewX(rect.left) >= mScrollX 6819 && contentToViewX(rect.right) <= mScrollX + viewWidth 6820 && contentToViewY(rect.top) >= mScrollY 6821 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 6822 } 6823 6824 /* 6825 * Maximize and center the rectangle, specified in the document coordinate 6826 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6827 * animated scroll to center it. If the zoom needs to be changed, find the 6828 * zoom center and do a smooth zoom transition. The rect is in document 6829 * coordinates 6830 */ 6831 void centerFitRect(Rect rect) { 6832 final int rectWidth = rect.width(); 6833 final int rectHeight = rect.height(); 6834 final int viewWidth = getViewWidth(); 6835 final int viewHeight = getViewHeightWithTitle(); 6836 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 6837 / rectHeight); 6838 scale = mZoomManager.computeScaleWithLimits(scale); 6839 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6840 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 6841 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 6842 true, 0); 6843 } else { 6844 float actualScale = mZoomManager.getScale(); 6845 float oldScreenX = rect.left * actualScale - mScrollX; 6846 float rectViewX = rect.left * scale; 6847 float rectViewWidth = rectWidth * scale; 6848 float newMaxWidth = mContentWidth * scale; 6849 float newScreenX = (viewWidth - rectViewWidth) / 2; 6850 // pin the newX to the WebView 6851 if (newScreenX > rectViewX) { 6852 newScreenX = rectViewX; 6853 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6854 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6855 } 6856 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6857 / (scale - actualScale); 6858 float oldScreenY = rect.top * actualScale + getTitleHeight() 6859 - mScrollY; 6860 float rectViewY = rect.top * scale + getTitleHeight(); 6861 float rectViewHeight = rectHeight * scale; 6862 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6863 float newScreenY = (viewHeight - rectViewHeight) / 2; 6864 // pin the newY to the WebView 6865 if (newScreenY > rectViewY) { 6866 newScreenY = rectViewY; 6867 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6868 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6869 } 6870 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6871 / (scale - actualScale); 6872 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6873 mZoomManager.startZoomAnimation(scale, false); 6874 } 6875 } 6876 6877 // Called by JNI to handle a touch on a node representing an email address, 6878 // address, or phone number 6879 private void overrideLoading(String url) { 6880 mCallbackProxy.uiOverrideUrlLoading(url); 6881 } 6882 6883 @Override 6884 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6885 // FIXME: If a subwindow is showing find, and the user touches the 6886 // background window, it can steal focus. 6887 if (mFindIsUp) return false; 6888 boolean result = false; 6889 if (inEditingMode()) { 6890 result = mWebTextView.requestFocus(direction, 6891 previouslyFocusedRect); 6892 } else { 6893 result = super.requestFocus(direction, previouslyFocusedRect); 6894 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 6895 // For cases such as GMail, where we gain focus from a direction, 6896 // we want to move to the first available link. 6897 // FIXME: If there are no visible links, we may not want to 6898 int fakeKeyDirection = 0; 6899 switch(direction) { 6900 case View.FOCUS_UP: 6901 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6902 break; 6903 case View.FOCUS_DOWN: 6904 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6905 break; 6906 case View.FOCUS_LEFT: 6907 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6908 break; 6909 case View.FOCUS_RIGHT: 6910 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6911 break; 6912 default: 6913 return result; 6914 } 6915 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6916 navHandledKey(fakeKeyDirection, 1, true, 0); 6917 } 6918 } 6919 } 6920 return result; 6921 } 6922 6923 @Override 6924 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6925 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6926 6927 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6928 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6929 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6930 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6931 6932 int measuredHeight = heightSize; 6933 int measuredWidth = widthSize; 6934 6935 // Grab the content size from WebViewCore. 6936 int contentHeight = contentToViewDimension(mContentHeight); 6937 int contentWidth = contentToViewDimension(mContentWidth); 6938 6939// Log.d(LOGTAG, "------- measure " + heightMode); 6940 6941 if (heightMode != MeasureSpec.EXACTLY) { 6942 mHeightCanMeasure = true; 6943 measuredHeight = contentHeight; 6944 if (heightMode == MeasureSpec.AT_MOST) { 6945 // If we are larger than the AT_MOST height, then our height can 6946 // no longer be measured and we should scroll internally. 6947 if (measuredHeight > heightSize) { 6948 measuredHeight = heightSize; 6949 mHeightCanMeasure = false; 6950 } else if (measuredHeight < heightSize) { 6951 measuredHeight |= MEASURED_STATE_TOO_SMALL; 6952 } 6953 } 6954 } else { 6955 mHeightCanMeasure = false; 6956 } 6957 if (mNativeClass != 0) { 6958 nativeSetHeightCanMeasure(mHeightCanMeasure); 6959 } 6960 // For the width, always use the given size unless unspecified. 6961 if (widthMode == MeasureSpec.UNSPECIFIED) { 6962 mWidthCanMeasure = true; 6963 measuredWidth = contentWidth; 6964 } else { 6965 if (measuredWidth < contentWidth) { 6966 measuredWidth |= MEASURED_STATE_TOO_SMALL; 6967 } 6968 mWidthCanMeasure = false; 6969 } 6970 6971 synchronized (this) { 6972 setMeasuredDimension(measuredWidth, measuredHeight); 6973 } 6974 } 6975 6976 @Override 6977 public boolean requestChildRectangleOnScreen(View child, 6978 Rect rect, 6979 boolean immediate) { 6980 if (mNativeClass == 0) { 6981 return false; 6982 } 6983 // don't scroll while in zoom animation. When it is done, we will adjust 6984 // the necessary components (e.g., WebTextView if it is in editing mode) 6985 if (mZoomManager.isFixedLengthAnimationInProgress()) { 6986 return false; 6987 } 6988 6989 rect.offset(child.getLeft() - child.getScrollX(), 6990 child.getTop() - child.getScrollY()); 6991 6992 Rect content = new Rect(viewToContentX(mScrollX), 6993 viewToContentY(mScrollY), 6994 viewToContentX(mScrollX + getWidth() 6995 - getVerticalScrollbarWidth()), 6996 viewToContentY(mScrollY + getViewHeightWithTitle())); 6997 content = nativeSubtractLayers(content); 6998 int screenTop = contentToViewY(content.top); 6999 int screenBottom = contentToViewY(content.bottom); 7000 int height = screenBottom - screenTop; 7001 int scrollYDelta = 0; 7002 7003 if (rect.bottom > screenBottom) { 7004 int oneThirdOfScreenHeight = height / 3; 7005 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7006 // If the rectangle is too tall to fit in the bottom two thirds 7007 // of the screen, place it at the top. 7008 scrollYDelta = rect.top - screenTop; 7009 } else { 7010 // If the rectangle will still fit on screen, we want its 7011 // top to be in the top third of the screen. 7012 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7013 } 7014 } else if (rect.top < screenTop) { 7015 scrollYDelta = rect.top - screenTop; 7016 } 7017 7018 int screenLeft = contentToViewX(content.left); 7019 int screenRight = contentToViewX(content.right); 7020 int width = screenRight - screenLeft; 7021 int scrollXDelta = 0; 7022 7023 if (rect.right > screenRight && rect.left > screenLeft) { 7024 if (rect.width() > width) { 7025 scrollXDelta += (rect.left - screenLeft); 7026 } else { 7027 scrollXDelta += (rect.right - screenRight); 7028 } 7029 } else if (rect.left < screenLeft) { 7030 scrollXDelta -= (screenLeft - rect.left); 7031 } 7032 7033 if ((scrollYDelta | scrollXDelta) != 0) { 7034 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7035 } 7036 7037 return false; 7038 } 7039 7040 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7041 String replace, int newStart, int newEnd) { 7042 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7043 arg.mReplace = replace; 7044 arg.mNewStart = newStart; 7045 arg.mNewEnd = newEnd; 7046 mTextGeneration++; 7047 arg.mTextGeneration = mTextGeneration; 7048 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7049 } 7050 7051 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7052 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7053 arg.mEvent = event; 7054 arg.mCurrentText = currentText; 7055 // Increase our text generation number, and pass it to webcore thread 7056 mTextGeneration++; 7057 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7058 // WebKit's document state is not saved until about to leave the page. 7059 // To make sure the host application, like Browser, has the up to date 7060 // document state when it goes to background, we force to save the 7061 // document state. 7062 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7063 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7064 cursorData(), 1000); 7065 } 7066 7067 /* package */ synchronized WebViewCore getWebViewCore() { 7068 return mWebViewCore; 7069 } 7070 7071 //------------------------------------------------------------------------- 7072 // Methods can be called from a separate thread, like WebViewCore 7073 // If it needs to call the View system, it has to send message. 7074 //------------------------------------------------------------------------- 7075 7076 /** 7077 * General handler to receive message coming from webkit thread 7078 */ 7079 class PrivateHandler extends Handler { 7080 @Override 7081 public void handleMessage(Message msg) { 7082 // exclude INVAL_RECT_MSG_ID since it is frequently output 7083 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 7084 if (msg.what >= FIRST_PRIVATE_MSG_ID 7085 && msg.what <= LAST_PRIVATE_MSG_ID) { 7086 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 7087 - FIRST_PRIVATE_MSG_ID]); 7088 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 7089 && msg.what <= LAST_PACKAGE_MSG_ID) { 7090 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 7091 - FIRST_PACKAGE_MSG_ID]); 7092 } else { 7093 Log.v(LOGTAG, Integer.toString(msg.what)); 7094 } 7095 } 7096 if (mWebViewCore == null) { 7097 // after WebView's destroy() is called, skip handling messages. 7098 return; 7099 } 7100 switch (msg.what) { 7101 case REMEMBER_PASSWORD: { 7102 mDatabase.setUsernamePassword( 7103 msg.getData().getString("host"), 7104 msg.getData().getString("username"), 7105 msg.getData().getString("password")); 7106 ((Message) msg.obj).sendToTarget(); 7107 break; 7108 } 7109 case NEVER_REMEMBER_PASSWORD: { 7110 mDatabase.setUsernamePassword( 7111 msg.getData().getString("host"), null, null); 7112 ((Message) msg.obj).sendToTarget(); 7113 break; 7114 } 7115 case PREVENT_DEFAULT_TIMEOUT: { 7116 // if timeout happens, cancel it so that it won't block UI 7117 // to continue handling touch events 7118 if ((msg.arg1 == MotionEvent.ACTION_DOWN 7119 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 7120 || (msg.arg1 == MotionEvent.ACTION_MOVE 7121 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 7122 cancelWebCoreTouchEvent( 7123 viewToContentX(mLastTouchX + mScrollX), 7124 viewToContentY(mLastTouchY + mScrollY), 7125 true); 7126 } 7127 break; 7128 } 7129 case SCROLL_SELECT_TEXT: { 7130 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 7131 mSentAutoScrollMessage = false; 7132 break; 7133 } 7134 if (mScrollingLayer == 0) { 7135 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 7136 } else { 7137 mScrollingLayerRect.left += mAutoScrollX; 7138 mScrollingLayerRect.top += mAutoScrollY; 7139 nativeScrollLayer(mScrollingLayer, 7140 mScrollingLayerRect.left, 7141 mScrollingLayerRect.top); 7142 invalidate(); 7143 } 7144 sendEmptyMessageDelayed( 7145 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 7146 break; 7147 } 7148 case SWITCH_TO_SHORTPRESS: { 7149 mInitialHitTestResult = null; // set by updateSelection() 7150 if (mTouchMode == TOUCH_INIT_MODE) { 7151 if (!getSettings().supportTouchOnly() 7152 && mPreventDefault != PREVENT_DEFAULT_YES) { 7153 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 7154 updateSelection(); 7155 } else { 7156 // set to TOUCH_SHORTPRESS_MODE so that it won't 7157 // trigger double tap any more 7158 mTouchMode = TOUCH_SHORTPRESS_MODE; 7159 } 7160 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 7161 mTouchMode = TOUCH_DONE_MODE; 7162 } 7163 break; 7164 } 7165 case SWITCH_TO_LONGPRESS: { 7166 if (getSettings().supportTouchOnly()) { 7167 removeTouchHighlight(false); 7168 } 7169 if (inFullScreenMode() || mDeferTouchProcess) { 7170 TouchEventData ted = new TouchEventData(); 7171 ted.mAction = WebViewCore.ACTION_LONGPRESS; 7172 ted.mIds = new int[1]; 7173 ted.mIds[0] = 0; 7174 ted.mPoints = new Point[1]; 7175 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 7176 viewToContentY(mLastTouchY + mScrollY)); 7177 // metaState for long press is tricky. Should it be the 7178 // state when the press started or when the press was 7179 // released? Or some intermediary key state? For 7180 // simplicity for now, we don't set it. 7181 ted.mMetaState = 0; 7182 ted.mReprocess = mDeferTouchProcess; 7183 ted.mNativeLayer = nativeScrollableLayer( 7184 ted.mPoints[0].x, ted.mPoints[0].y, 7185 ted.mNativeLayerRect, null); 7186 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7187 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 7188 mTouchMode = TOUCH_DONE_MODE; 7189 performLongClick(); 7190 } 7191 break; 7192 } 7193 case RELEASE_SINGLE_TAP: { 7194 doShortPress(); 7195 break; 7196 } 7197 case SCROLL_TO_MSG_ID: { 7198 // arg1 = animate, arg2 = onlyIfImeIsShowing 7199 // obj = Point(x, y) 7200 if (msg.arg2 == 1) { 7201 // This scroll is intended to bring the textfield into 7202 // view, but is only necessary if the IME is showing 7203 InputMethodManager imm = InputMethodManager.peekInstance(); 7204 if (imm == null || !imm.isAcceptingText() 7205 || (!imm.isActive(WebView.this) && (!inEditingMode() 7206 || !imm.isActive(mWebTextView)))) { 7207 break; 7208 } 7209 } 7210 final Point p = (Point) msg.obj; 7211 if (msg.arg1 == 1) { 7212 spawnContentScrollTo(p.x, p.y); 7213 } else { 7214 setContentScrollTo(p.x, p.y); 7215 } 7216 break; 7217 } 7218 case UPDATE_ZOOM_RANGE: { 7219 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 7220 // mScrollX contains the new minPrefWidth 7221 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 7222 break; 7223 } 7224 case REPLACE_BASE_CONTENT: { 7225 nativeReplaceBaseContent(msg.arg1); 7226 break; 7227 } 7228 case NEW_PICTURE_MSG_ID: { 7229 // called for new content 7230 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 7231 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion.getBounds(), 7232 getSettings().getShowVisualIndicator()); 7233 final Point viewSize = draw.mViewSize; 7234 WebViewCore.ViewState viewState = draw.mViewState; 7235 boolean isPictureAfterFirstLayout = viewState != null; 7236 if (isPictureAfterFirstLayout) { 7237 // Reset the last sent data here since dealing with new page. 7238 mLastWidthSent = 0; 7239 mZoomManager.onFirstLayout(draw); 7240 if (!mDrawHistory) { 7241 // Do not send the scroll event for this particular 7242 // scroll message. Note that a scroll event may 7243 // still be fired if the user scrolls before the 7244 // message can be handled. 7245 mSendScrollEvent = false; 7246 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 7247 mSendScrollEvent = true; 7248 7249 // As we are on a new page, remove the WebTextView. This 7250 // is necessary for page loads driven by webkit, and in 7251 // particular when the user was on a password field, so 7252 // the WebTextView was visible. 7253 clearTextEntry(); 7254 } 7255 } 7256 7257 // We update the layout (i.e. request a layout from the 7258 // view system) if the last view size that we sent to 7259 // WebCore matches the view size of the picture we just 7260 // received in the fixed dimension. 7261 final boolean updateLayout = viewSize.x == mLastWidthSent 7262 && viewSize.y == mLastHeightSent; 7263 // Don't send scroll event for picture coming from webkit, 7264 // since the new picture may cause a scroll event to override 7265 // the saved history scroll position. 7266 mSendScrollEvent = false; 7267 recordNewContentSize(draw.mContentSize.x, 7268 draw.mContentSize.y, updateLayout); 7269 mSendScrollEvent = true; 7270 if (DebugFlags.WEB_VIEW) { 7271 Rect b = draw.mInvalRegion.getBounds(); 7272 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 7273 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 7274 } 7275 invalidateContentRect(draw.mInvalRegion.getBounds()); 7276 7277 if (mPictureListener != null) { 7278 mPictureListener.onNewPicture(WebView.this, capturePicture()); 7279 } 7280 7281 // update the zoom information based on the new picture 7282 mZoomManager.onNewPicture(draw); 7283 7284 if (draw.mFocusSizeChanged && inEditingMode()) { 7285 mFocusSizeChanged = true; 7286 } 7287 if (isPictureAfterFirstLayout) { 7288 mViewManager.postReadyToDrawAll(); 7289 } 7290 break; 7291 } 7292 case WEBCORE_INITIALIZED_MSG_ID: 7293 // nativeCreate sets mNativeClass to a non-zero value 7294 nativeCreate(msg.arg1); 7295 break; 7296 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 7297 // Make sure that the textfield is currently focused 7298 // and representing the same node as the pointer. 7299 if (inEditingMode() && 7300 mWebTextView.isSameTextField(msg.arg1)) { 7301 if (msg.getData().getBoolean("password")) { 7302 Spannable text = (Spannable) mWebTextView.getText(); 7303 int start = Selection.getSelectionStart(text); 7304 int end = Selection.getSelectionEnd(text); 7305 mWebTextView.setInPassword(true); 7306 // Restore the selection, which may have been 7307 // ruined by setInPassword. 7308 Spannable pword = 7309 (Spannable) mWebTextView.getText(); 7310 Selection.setSelection(pword, start, end); 7311 // If the text entry has created more events, ignore 7312 // this one. 7313 } else if (msg.arg2 == mTextGeneration) { 7314 String text = (String) msg.obj; 7315 if (null == text) { 7316 text = ""; 7317 } 7318 mWebTextView.setTextAndKeepSelection(text); 7319 } 7320 } 7321 break; 7322 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 7323 displaySoftKeyboard(true); 7324 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 7325 case UPDATE_TEXT_SELECTION_MSG_ID: 7326 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 7327 (WebViewCore.TextSelectionData) msg.obj); 7328 break; 7329 case FORM_DID_BLUR: 7330 if (inEditingMode() 7331 && mWebTextView.isSameTextField(msg.arg1)) { 7332 hideSoftKeyboard(); 7333 } 7334 break; 7335 case RETURN_LABEL: 7336 if (inEditingMode() 7337 && mWebTextView.isSameTextField(msg.arg1)) { 7338 mWebTextView.setHint((String) msg.obj); 7339 InputMethodManager imm 7340 = InputMethodManager.peekInstance(); 7341 // The hint is propagated to the IME in 7342 // onCreateInputConnection. If the IME is already 7343 // active, restart it so that its hint text is updated. 7344 if (imm != null && imm.isActive(mWebTextView)) { 7345 imm.restartInput(mWebTextView); 7346 } 7347 } 7348 break; 7349 case UNHANDLED_NAV_KEY: 7350 navHandledKey(msg.arg1, 1, false, 0); 7351 break; 7352 case UPDATE_TEXT_ENTRY_MSG_ID: 7353 // this is sent after finishing resize in WebViewCore. Make 7354 // sure the text edit box is still on the screen. 7355 if (inEditingMode() && nativeCursorIsTextInput()) { 7356 rebuildWebTextView(); 7357 } 7358 break; 7359 case CLEAR_TEXT_ENTRY: 7360 clearTextEntry(); 7361 break; 7362 case INVAL_RECT_MSG_ID: { 7363 Rect r = (Rect)msg.obj; 7364 if (r == null) { 7365 invalidate(); 7366 } else { 7367 // we need to scale r from content into view coords, 7368 // which viewInvalidate() does for us 7369 viewInvalidate(r.left, r.top, r.right, r.bottom); 7370 } 7371 break; 7372 } 7373 case REQUEST_FORM_DATA: 7374 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7375 if (mWebTextView.isSameTextField(msg.arg1)) { 7376 mWebTextView.setAdapterCustom(adapter); 7377 } 7378 break; 7379 case RESUME_WEBCORE_PRIORITY: 7380 WebViewCore.resumePriority(); 7381 WebViewCore.resumeUpdatePicture(mWebViewCore); 7382 break; 7383 7384 case LONG_PRESS_CENTER: 7385 // as this is shared by keydown and trackballdown, reset all 7386 // the states 7387 mGotCenterDown = false; 7388 mTrackballDown = false; 7389 performLongClick(); 7390 break; 7391 7392 case WEBCORE_NEED_TOUCH_EVENTS: 7393 mForwardTouchEvents = (msg.arg1 != 0); 7394 break; 7395 7396 case PREVENT_TOUCH_ID: 7397 if (inFullScreenMode()) { 7398 break; 7399 } 7400 if (msg.obj == null) { 7401 if (msg.arg1 == MotionEvent.ACTION_DOWN 7402 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7403 // if prevent default is called from WebCore, UI 7404 // will not handle the rest of the touch events any 7405 // more. 7406 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7407 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7408 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 7409 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7410 // the return for the first ACTION_MOVE will decide 7411 // whether UI will handle touch or not. Currently no 7412 // support for alternating prevent default 7413 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7414 : PREVENT_DEFAULT_NO; 7415 } 7416 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7417 mTouchHighlightRegion.setEmpty(); 7418 } 7419 } else { 7420 TouchEventData ted = (TouchEventData) msg.obj; 7421 7422 if (ted.mPoints.length > 1) { // multi-touch 7423 if (ted.mAction == MotionEvent.ACTION_POINTER_UP) { 7424 mIsHandlingMultiTouch = false; 7425 } 7426 if (msg.arg2 == 0) { 7427 mPreventDefault = PREVENT_DEFAULT_NO; 7428 handleMultiTouchInWebView(ted.mMotionEvent); 7429 } else { 7430 mPreventDefault = PREVENT_DEFAULT_YES; 7431 } 7432 break; 7433 } 7434 7435 // prevent default is not called in WebCore, so the 7436 // message needs to be reprocessed in UI 7437 if (msg.arg2 == 0) { 7438 // Following is for single touch. 7439 switch (ted.mAction) { 7440 case MotionEvent.ACTION_DOWN: 7441 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 7442 - mScrollX; 7443 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 7444 - mScrollY; 7445 mDeferTouchMode = TOUCH_INIT_MODE; 7446 break; 7447 case MotionEvent.ACTION_MOVE: { 7448 // no snapping in defer process 7449 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 7450 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 7451 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7452 mDeferTouchMode = TOUCH_DRAG_MODE; 7453 mLastDeferTouchX = x; 7454 mLastDeferTouchY = y; 7455 startScrollingLayer(x, y); 7456 startDrag(); 7457 } 7458 int deltaX = pinLocX((int) (mScrollX 7459 + mLastDeferTouchX - x)) 7460 - mScrollX; 7461 int deltaY = pinLocY((int) (mScrollY 7462 + mLastDeferTouchY - y)) 7463 - mScrollY; 7464 doDrag(deltaX, deltaY); 7465 if (deltaX != 0) mLastDeferTouchX = x; 7466 if (deltaY != 0) mLastDeferTouchY = y; 7467 break; 7468 } 7469 case MotionEvent.ACTION_UP: 7470 case MotionEvent.ACTION_CANCEL: 7471 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7472 // no fling in defer process 7473 mScroller.springBack(mScrollX, mScrollY, 0, 7474 computeMaxScrollX(), 0, 7475 computeMaxScrollY()); 7476 invalidate(); 7477 WebViewCore.resumePriority(); 7478 WebViewCore.resumeUpdatePicture(mWebViewCore); 7479 } 7480 mDeferTouchMode = TOUCH_DONE_MODE; 7481 break; 7482 case WebViewCore.ACTION_DOUBLETAP: 7483 // doDoubleTap() needs mLastTouchX/Y as anchor 7484 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 7485 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 7486 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7487 mDeferTouchMode = TOUCH_DONE_MODE; 7488 break; 7489 case WebViewCore.ACTION_LONGPRESS: 7490 HitTestResult hitTest = getHitTestResult(); 7491 if (hitTest != null && hitTest.mType 7492 != HitTestResult.UNKNOWN_TYPE) { 7493 performLongClick(); 7494 } 7495 mDeferTouchMode = TOUCH_DONE_MODE; 7496 break; 7497 } 7498 } 7499 } 7500 break; 7501 7502 case REQUEST_KEYBOARD: 7503 if (msg.arg1 == 0) { 7504 hideSoftKeyboard(); 7505 } else { 7506 displaySoftKeyboard(false); 7507 } 7508 break; 7509 7510 case FIND_AGAIN: 7511 // Ignore if find has been dismissed. 7512 if (mFindIsUp && mFindCallback != null) { 7513 mFindCallback.findAll(); 7514 } 7515 break; 7516 7517 case DRAG_HELD_MOTIONLESS: 7518 mHeldMotionless = MOTIONLESS_TRUE; 7519 invalidate(); 7520 // fall through to keep scrollbars awake 7521 7522 case AWAKEN_SCROLL_BARS: 7523 if (mTouchMode == TOUCH_DRAG_MODE 7524 && mHeldMotionless == MOTIONLESS_TRUE) { 7525 awakenScrollBars(ViewConfiguration 7526 .getScrollDefaultDelay(), false); 7527 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7528 .obtainMessage(AWAKEN_SCROLL_BARS), 7529 ViewConfiguration.getScrollDefaultDelay()); 7530 } 7531 break; 7532 7533 case DO_MOTION_UP: 7534 doMotionUp(msg.arg1, msg.arg2); 7535 break; 7536 7537 case SCREEN_ON: 7538 setKeepScreenOn(msg.arg1 == 1); 7539 break; 7540 7541 case SHOW_FULLSCREEN: { 7542 View view = (View) msg.obj; 7543 int npp = msg.arg1; 7544 7545 if (inFullScreenMode()) { 7546 Log.w(LOGTAG, "Should not have another full screen."); 7547 dismissFullScreenMode(); 7548 } 7549 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7550 mFullScreenHolder.setContentView(view); 7551 mFullScreenHolder.setCancelable(false); 7552 mFullScreenHolder.setCanceledOnTouchOutside(false); 7553 mFullScreenHolder.show(); 7554 7555 break; 7556 } 7557 case HIDE_FULLSCREEN: 7558 dismissFullScreenMode(); 7559 break; 7560 7561 case DOM_FOCUS_CHANGED: 7562 if (inEditingMode()) { 7563 nativeClearCursor(); 7564 rebuildWebTextView(); 7565 } 7566 break; 7567 7568 case SHOW_RECT_MSG_ID: { 7569 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7570 int x = mScrollX; 7571 int left = contentToViewX(data.mLeft); 7572 int width = contentToViewDimension(data.mWidth); 7573 int maxWidth = contentToViewDimension(data.mContentWidth); 7574 int viewWidth = getViewWidth(); 7575 if (width < viewWidth) { 7576 // center align 7577 x += left + width / 2 - mScrollX - viewWidth / 2; 7578 } else { 7579 x += (int) (left + data.mXPercentInDoc * width 7580 - mScrollX - data.mXPercentInView * viewWidth); 7581 } 7582 if (DebugFlags.WEB_VIEW) { 7583 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7584 width + ",maxWidth=" + maxWidth + 7585 ",viewWidth=" + viewWidth + ",x=" 7586 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7587 ",xPercentInView=" + data.mXPercentInView+ ")"); 7588 } 7589 // use the passing content width to cap x as the current 7590 // mContentWidth may not be updated yet 7591 x = Math.max(0, 7592 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7593 int top = contentToViewY(data.mTop); 7594 int height = contentToViewDimension(data.mHeight); 7595 int maxHeight = contentToViewDimension(data.mContentHeight); 7596 int viewHeight = getViewHeight(); 7597 int y = (int) (top + data.mYPercentInDoc * height - 7598 data.mYPercentInView * viewHeight); 7599 if (DebugFlags.WEB_VIEW) { 7600 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7601 height + ",maxHeight=" + maxHeight + 7602 ",viewHeight=" + viewHeight + ",y=" 7603 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7604 ",yPercentInView=" + data.mYPercentInView+ ")"); 7605 } 7606 // use the passing content height to cap y as the current 7607 // mContentHeight may not be updated yet 7608 y = Math.max(0, 7609 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7610 // We need to take into account the visible title height 7611 // when scrolling since y is an absolute view position. 7612 y = Math.max(0, y - getVisibleTitleHeight()); 7613 scrollTo(x, y); 7614 } 7615 break; 7616 7617 case CENTER_FIT_RECT: 7618 centerFitRect((Rect)msg.obj); 7619 break; 7620 7621 case SET_SCROLLBAR_MODES: 7622 mHorizontalScrollBarMode = msg.arg1; 7623 mVerticalScrollBarMode = msg.arg2; 7624 break; 7625 7626 case SELECTION_STRING_CHANGED: 7627 if (mAccessibilityInjector != null) { 7628 String selectionString = (String) msg.obj; 7629 mAccessibilityInjector.onSelectionStringChange(selectionString); 7630 } 7631 break; 7632 7633 case SET_TOUCH_HIGHLIGHT_RECTS: 7634 invalidate(mTouchHighlightRegion.getBounds()); 7635 mTouchHighlightRegion.setEmpty(); 7636 if (msg.obj != null) { 7637 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 7638 for (Rect rect : rects) { 7639 Rect viewRect = contentToViewRect(rect); 7640 // some sites, like stories in nytimes.com, set 7641 // mouse event handler in the top div. It is not 7642 // user friendly to highlight the div if it covers 7643 // more than half of the screen. 7644 if (viewRect.width() < getWidth() >> 1 7645 || viewRect.height() < getHeight() >> 1) { 7646 mTouchHighlightRegion.union(viewRect); 7647 invalidate(viewRect); 7648 } else { 7649 Log.w(LOGTAG, "Skip the huge selection rect:" 7650 + viewRect); 7651 } 7652 } 7653 } 7654 break; 7655 7656 case SAVE_WEBARCHIVE_FINISHED: 7657 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7658 if (saveMessage.mCallback != null) { 7659 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7660 } 7661 break; 7662 7663 case SET_AUTOFILLABLE: 7664 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 7665 if (mWebTextView != null) { 7666 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 7667 rebuildWebTextView(); 7668 } 7669 break; 7670 7671 case AUTOFILL_COMPLETE: 7672 if (mWebTextView != null) { 7673 // Clear the WebTextView adapter when AutoFill finishes 7674 // so that the drop down gets cleared. 7675 mWebTextView.setAdapterCustom(null); 7676 } 7677 break; 7678 7679 case SELECT_AT: 7680 nativeSelectAt(msg.arg1, msg.arg2); 7681 break; 7682 7683 default: 7684 super.handleMessage(msg); 7685 break; 7686 } 7687 } 7688 } 7689 7690 /** 7691 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7692 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7693 */ 7694 private void updateTextSelectionFromMessage(int nodePointer, 7695 int textGeneration, WebViewCore.TextSelectionData data) { 7696 if (inEditingMode() 7697 && mWebTextView.isSameTextField(nodePointer) 7698 && textGeneration == mTextGeneration) { 7699 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7700 } 7701 } 7702 7703 // Class used to use a dropdown for a <select> element 7704 private class InvokeListBox implements Runnable { 7705 // Whether the listbox allows multiple selection. 7706 private boolean mMultiple; 7707 // Passed in to a list with multiple selection to tell 7708 // which items are selected. 7709 private int[] mSelectedArray; 7710 // Passed in to a list with single selection to tell 7711 // where the initial selection is. 7712 private int mSelection; 7713 7714 private Container[] mContainers; 7715 7716 // Need these to provide stable ids to my ArrayAdapter, 7717 // which normally does not have stable ids. (Bug 1250098) 7718 private class Container extends Object { 7719 /** 7720 * Possible values for mEnabled. Keep in sync with OptionStatus in 7721 * WebViewCore.cpp 7722 */ 7723 final static int OPTGROUP = -1; 7724 final static int OPTION_DISABLED = 0; 7725 final static int OPTION_ENABLED = 1; 7726 7727 String mString; 7728 int mEnabled; 7729 int mId; 7730 7731 public String toString() { 7732 return mString; 7733 } 7734 } 7735 7736 /** 7737 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7738 * and allow filtering. 7739 */ 7740 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7741 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7742 super(context, 7743 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7744 com.android.internal.R.layout.select_dialog_singlechoice, 7745 objects); 7746 } 7747 7748 @Override 7749 public View getView(int position, View convertView, 7750 ViewGroup parent) { 7751 // Always pass in null so that we will get a new CheckedTextView 7752 // Otherwise, an item which was previously used as an <optgroup> 7753 // element (i.e. has no check), could get used as an <option> 7754 // element, which needs a checkbox/radio, but it would not have 7755 // one. 7756 convertView = super.getView(position, null, parent); 7757 Container c = item(position); 7758 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7759 // ListView does not draw dividers between disabled and 7760 // enabled elements. Use a LinearLayout to provide dividers 7761 LinearLayout layout = new LinearLayout(mContext); 7762 layout.setOrientation(LinearLayout.VERTICAL); 7763 if (position > 0) { 7764 View dividerTop = new View(mContext); 7765 dividerTop.setBackgroundResource( 7766 android.R.drawable.divider_horizontal_bright); 7767 layout.addView(dividerTop); 7768 } 7769 7770 if (Container.OPTGROUP == c.mEnabled) { 7771 // Currently select_dialog_multichoice and 7772 // select_dialog_singlechoice are CheckedTextViews. If 7773 // that changes, the class cast will no longer be valid. 7774 Assert.assertTrue( 7775 convertView instanceof CheckedTextView); 7776 ((CheckedTextView) convertView).setCheckMarkDrawable( 7777 null); 7778 } else { 7779 // c.mEnabled == Container.OPTION_DISABLED 7780 // Draw the disabled element in a disabled state. 7781 convertView.setEnabled(false); 7782 } 7783 7784 layout.addView(convertView); 7785 if (position < getCount() - 1) { 7786 View dividerBottom = new View(mContext); 7787 dividerBottom.setBackgroundResource( 7788 android.R.drawable.divider_horizontal_bright); 7789 layout.addView(dividerBottom); 7790 } 7791 return layout; 7792 } 7793 return convertView; 7794 } 7795 7796 @Override 7797 public boolean hasStableIds() { 7798 // AdapterView's onChanged method uses this to determine whether 7799 // to restore the old state. Return false so that the old (out 7800 // of date) state does not replace the new, valid state. 7801 return false; 7802 } 7803 7804 private Container item(int position) { 7805 if (position < 0 || position >= getCount()) { 7806 return null; 7807 } 7808 return (Container) getItem(position); 7809 } 7810 7811 @Override 7812 public long getItemId(int position) { 7813 Container item = item(position); 7814 if (item == null) { 7815 return -1; 7816 } 7817 return item.mId; 7818 } 7819 7820 @Override 7821 public boolean areAllItemsEnabled() { 7822 return false; 7823 } 7824 7825 @Override 7826 public boolean isEnabled(int position) { 7827 Container item = item(position); 7828 if (item == null) { 7829 return false; 7830 } 7831 return Container.OPTION_ENABLED == item.mEnabled; 7832 } 7833 } 7834 7835 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7836 mMultiple = true; 7837 mSelectedArray = selected; 7838 7839 int length = array.length; 7840 mContainers = new Container[length]; 7841 for (int i = 0; i < length; i++) { 7842 mContainers[i] = new Container(); 7843 mContainers[i].mString = array[i]; 7844 mContainers[i].mEnabled = enabled[i]; 7845 mContainers[i].mId = i; 7846 } 7847 } 7848 7849 private InvokeListBox(String[] array, int[] enabled, int selection) { 7850 mSelection = selection; 7851 mMultiple = false; 7852 7853 int length = array.length; 7854 mContainers = new Container[length]; 7855 for (int i = 0; i < length; i++) { 7856 mContainers[i] = new Container(); 7857 mContainers[i].mString = array[i]; 7858 mContainers[i].mEnabled = enabled[i]; 7859 mContainers[i].mId = i; 7860 } 7861 } 7862 7863 /* 7864 * Whenever the data set changes due to filtering, this class ensures 7865 * that the checked item remains checked. 7866 */ 7867 private class SingleDataSetObserver extends DataSetObserver { 7868 private long mCheckedId; 7869 private ListView mListView; 7870 private Adapter mAdapter; 7871 7872 /* 7873 * Create a new observer. 7874 * @param id The ID of the item to keep checked. 7875 * @param l ListView for getting and clearing the checked states 7876 * @param a Adapter for getting the IDs 7877 */ 7878 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7879 mCheckedId = id; 7880 mListView = l; 7881 mAdapter = a; 7882 } 7883 7884 public void onChanged() { 7885 // The filter may have changed which item is checked. Find the 7886 // item that the ListView thinks is checked. 7887 int position = mListView.getCheckedItemPosition(); 7888 long id = mAdapter.getItemId(position); 7889 if (mCheckedId != id) { 7890 // Clear the ListView's idea of the checked item, since 7891 // it is incorrect 7892 mListView.clearChoices(); 7893 // Search for mCheckedId. If it is in the filtered list, 7894 // mark it as checked 7895 int count = mAdapter.getCount(); 7896 for (int i = 0; i < count; i++) { 7897 if (mAdapter.getItemId(i) == mCheckedId) { 7898 mListView.setItemChecked(i, true); 7899 break; 7900 } 7901 } 7902 } 7903 } 7904 7905 public void onInvalidate() {} 7906 } 7907 7908 public void run() { 7909 final ListView listView = (ListView) LayoutInflater.from(mContext) 7910 .inflate(com.android.internal.R.layout.select_dialog, null); 7911 final MyArrayListAdapter adapter = new 7912 MyArrayListAdapter(mContext, mContainers, mMultiple); 7913 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7914 .setView(listView).setCancelable(true) 7915 .setInverseBackgroundForced(true); 7916 7917 if (mMultiple) { 7918 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7919 public void onClick(DialogInterface dialog, int which) { 7920 mWebViewCore.sendMessage( 7921 EventHub.LISTBOX_CHOICES, 7922 adapter.getCount(), 0, 7923 listView.getCheckedItemPositions()); 7924 }}); 7925 b.setNegativeButton(android.R.string.cancel, 7926 new DialogInterface.OnClickListener() { 7927 public void onClick(DialogInterface dialog, int which) { 7928 mWebViewCore.sendMessage( 7929 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7930 }}); 7931 } 7932 mListBoxDialog = b.create(); 7933 listView.setAdapter(adapter); 7934 listView.setFocusableInTouchMode(true); 7935 // There is a bug (1250103) where the checks in a ListView with 7936 // multiple items selected are associated with the positions, not 7937 // the ids, so the items do not properly retain their checks when 7938 // filtered. Do not allow filtering on multiple lists until 7939 // that bug is fixed. 7940 7941 listView.setTextFilterEnabled(!mMultiple); 7942 if (mMultiple) { 7943 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7944 int length = mSelectedArray.length; 7945 for (int i = 0; i < length; i++) { 7946 listView.setItemChecked(mSelectedArray[i], true); 7947 } 7948 } else { 7949 listView.setOnItemClickListener(new OnItemClickListener() { 7950 public void onItemClick(AdapterView parent, View v, 7951 int position, long id) { 7952 // Rather than sending the message right away, send it 7953 // after the page regains focus. 7954 mListBoxMessage = Message.obtain(null, 7955 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 7956 mListBoxDialog.dismiss(); 7957 mListBoxDialog = null; 7958 } 7959 }); 7960 if (mSelection != -1) { 7961 listView.setSelection(mSelection); 7962 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7963 listView.setItemChecked(mSelection, true); 7964 DataSetObserver observer = new SingleDataSetObserver( 7965 adapter.getItemId(mSelection), listView, adapter); 7966 adapter.registerDataSetObserver(observer); 7967 } 7968 } 7969 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7970 public void onCancel(DialogInterface dialog) { 7971 mWebViewCore.sendMessage( 7972 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7973 mListBoxDialog = null; 7974 } 7975 }); 7976 mListBoxDialog.show(); 7977 } 7978 } 7979 7980 private Message mListBoxMessage; 7981 7982 /* 7983 * Request a dropdown menu for a listbox with multiple selection. 7984 * 7985 * @param array Labels for the listbox. 7986 * @param enabledArray State for each element in the list. See static 7987 * integers in Container class. 7988 * @param selectedArray Which positions are initally selected. 7989 */ 7990 void requestListBox(String[] array, int[] enabledArray, int[] 7991 selectedArray) { 7992 mPrivateHandler.post( 7993 new InvokeListBox(array, enabledArray, selectedArray)); 7994 } 7995 7996 /* 7997 * Request a dropdown menu for a listbox with single selection or a single 7998 * <select> element. 7999 * 8000 * @param array Labels for the listbox. 8001 * @param enabledArray State for each element in the list. See static 8002 * integers in Container class. 8003 * @param selection Which position is initally selected. 8004 */ 8005 void requestListBox(String[] array, int[] enabledArray, int selection) { 8006 mPrivateHandler.post( 8007 new InvokeListBox(array, enabledArray, selection)); 8008 } 8009 8010 // called by JNI 8011 private void sendMoveFocus(int frame, int node) { 8012 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 8013 new WebViewCore.CursorData(frame, node, 0, 0)); 8014 } 8015 8016 // called by JNI 8017 private void sendMoveMouse(int frame, int node, int x, int y) { 8018 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 8019 new WebViewCore.CursorData(frame, node, x, y)); 8020 } 8021 8022 /* 8023 * Send a mouse move event to the webcore thread. 8024 * 8025 * @param removeFocus Pass true to remove the WebTextView, if present. 8026 * @param stopPaintingCaret Stop drawing the blinking caret if true. 8027 * called by JNI 8028 */ 8029 @SuppressWarnings("unused") 8030 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 8031 if (removeFocus) { 8032 clearTextEntry(); 8033 } 8034 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 8035 stopPaintingCaret ? 1 : 0, 0, 8036 cursorData()); 8037 } 8038 8039 /** 8040 * Called by JNI to send a message to the webcore thread that the user 8041 * touched the webpage. 8042 * @param touchGeneration Generation number of the touch, to ignore touches 8043 * after a new one has been generated. 8044 * @param frame Pointer to the frame holding the node that was touched. 8045 * @param node Pointer to the node touched. 8046 * @param x x-position of the touch. 8047 * @param y y-position of the touch. 8048 */ 8049 private void sendMotionUp(int touchGeneration, 8050 int frame, int node, int x, int y) { 8051 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 8052 touchUpData.mMoveGeneration = touchGeneration; 8053 touchUpData.mFrame = frame; 8054 touchUpData.mNode = node; 8055 touchUpData.mX = x; 8056 touchUpData.mY = y; 8057 touchUpData.mNativeLayer = nativeScrollableLayer( 8058 x, y, touchUpData.mNativeLayerRect, null); 8059 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 8060 } 8061 8062 8063 private int getScaledMaxXScroll() { 8064 int width; 8065 if (mHeightCanMeasure == false) { 8066 width = getViewWidth() / 4; 8067 } else { 8068 Rect visRect = new Rect(); 8069 calcOurVisibleRect(visRect); 8070 width = visRect.width() / 2; 8071 } 8072 // FIXME the divisor should be retrieved from somewhere 8073 return viewToContentX(width); 8074 } 8075 8076 private int getScaledMaxYScroll() { 8077 int height; 8078 if (mHeightCanMeasure == false) { 8079 height = getViewHeight() / 4; 8080 } else { 8081 Rect visRect = new Rect(); 8082 calcOurVisibleRect(visRect); 8083 height = visRect.height() / 2; 8084 } 8085 // FIXME the divisor should be retrieved from somewhere 8086 // the closest thing today is hard-coded into ScrollView.java 8087 // (from ScrollView.java, line 363) int maxJump = height/2; 8088 return Math.round(height * mZoomManager.getInvScale()); 8089 } 8090 8091 /** 8092 * Called by JNI to invalidate view 8093 */ 8094 private void viewInvalidate() { 8095 invalidate(); 8096 } 8097 8098 /** 8099 * Pass the key directly to the page. This assumes that 8100 * nativePageShouldHandleShiftAndArrows() returned true. 8101 */ 8102 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 8103 int keyEventAction; 8104 int eventHubAction; 8105 if (down) { 8106 keyEventAction = KeyEvent.ACTION_DOWN; 8107 eventHubAction = EventHub.KEY_DOWN; 8108 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 8109 } else { 8110 keyEventAction = KeyEvent.ACTION_UP; 8111 eventHubAction = EventHub.KEY_UP; 8112 } 8113 8114 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 8115 1, (metaState & KeyEvent.META_SHIFT_ON) 8116 | (metaState & KeyEvent.META_ALT_ON) 8117 | (metaState & KeyEvent.META_SYM_ON) 8118 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 8119 mWebViewCore.sendMessage(eventHubAction, event); 8120 } 8121 8122 // return true if the key was handled 8123 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 8124 long time) { 8125 if (mNativeClass == 0) { 8126 return false; 8127 } 8128 mInitialHitTestResult = null; 8129 mLastCursorTime = time; 8130 mLastCursorBounds = nativeGetCursorRingBounds(); 8131 boolean keyHandled 8132 = nativeMoveCursor(keyCode, count, noScroll) == false; 8133 if (DebugFlags.WEB_VIEW) { 8134 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 8135 + " mLastCursorTime=" + mLastCursorTime 8136 + " handled=" + keyHandled); 8137 } 8138 if (keyHandled == false) { 8139 return keyHandled; 8140 } 8141 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 8142 if (contentCursorRingBounds.isEmpty()) return keyHandled; 8143 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 8144 // set last touch so that context menu related functions will work 8145 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 8146 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 8147 if (mHeightCanMeasure == false) { 8148 return keyHandled; 8149 } 8150 Rect visRect = new Rect(); 8151 calcOurVisibleRect(visRect); 8152 Rect outset = new Rect(visRect); 8153 int maxXScroll = visRect.width() / 2; 8154 int maxYScroll = visRect.height() / 2; 8155 outset.inset(-maxXScroll, -maxYScroll); 8156 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 8157 return keyHandled; 8158 } 8159 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 8160 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 8161 maxXScroll); 8162 if (maxH > 0) { 8163 pinScrollBy(maxH, 0, true, 0); 8164 } else { 8165 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 8166 -maxXScroll); 8167 if (maxH < 0) { 8168 pinScrollBy(maxH, 0, true, 0); 8169 } 8170 } 8171 if (mLastCursorBounds.isEmpty()) return keyHandled; 8172 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 8173 return keyHandled; 8174 } 8175 if (DebugFlags.WEB_VIEW) { 8176 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 8177 + contentCursorRingBounds); 8178 } 8179 requestRectangleOnScreen(viewCursorRingBounds); 8180 return keyHandled; 8181 } 8182 8183 /** 8184 * @return Whether accessibility script has been injected. 8185 */ 8186 private boolean accessibilityScriptInjected() { 8187 // TODO: Maybe the injected script should announce its presence in 8188 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 8189 // will check that as one of the conditions it looks for 8190 return mAccessibilityScriptInjected; 8191 } 8192 8193 /** 8194 * Set the background color. It's white by default. Pass 8195 * zero to make the view transparent. 8196 * @param color the ARGB color described by Color.java 8197 */ 8198 public void setBackgroundColor(int color) { 8199 mBackgroundColor = color; 8200 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 8201 } 8202 8203 public void debugDump() { 8204 nativeDebugDump(); 8205 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 8206 } 8207 8208 /** 8209 * Draw the HTML page into the specified canvas. This call ignores any 8210 * view-specific zoom, scroll offset, or other changes. It does not draw 8211 * any view-specific chrome, such as progress or URL bars. 8212 * 8213 * @hide only needs to be accessible to Browser and testing 8214 */ 8215 public void drawPage(Canvas canvas) { 8216 nativeDraw(canvas, 0, 0, false); 8217 } 8218 8219 /** 8220 * Enable expanded tiles bound for smoother scrolling. 8221 * 8222 * @hide only used by the Browser 8223 */ 8224 public void setExpandedTileBounds(boolean enabled) { 8225 nativeSetExpandedTileBounds(enabled); 8226 } 8227 8228 /** 8229 * Set the time to wait between passing touches to WebCore. See also the 8230 * TOUCH_SENT_INTERVAL member for further discussion. 8231 * 8232 * @hide This is only used by the DRT test application. 8233 */ 8234 public void setTouchInterval(int interval) { 8235 mCurrentTouchInterval = interval; 8236 } 8237 8238 /** 8239 * Update our cache with updatedText. 8240 * @param updatedText The new text to put in our cache. 8241 */ 8242 /* package */ void updateCachedTextfield(String updatedText) { 8243 // Also place our generation number so that when we look at the cache 8244 // we recognize that it is up to date. 8245 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 8246 } 8247 8248 /*package*/ void autoFillForm(int autoFillQueryId) { 8249 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 8250 } 8251 8252 /* package */ ViewManager getViewManager() { 8253 return mViewManager; 8254 } 8255 8256 private native int nativeCacheHitFramePointer(); 8257 private native boolean nativeCacheHitIsPlugin(); 8258 private native Rect nativeCacheHitNodeBounds(); 8259 private native int nativeCacheHitNodePointer(); 8260 /* package */ native void nativeClearCursor(); 8261 private native void nativeCreate(int ptr); 8262 private native int nativeCursorFramePointer(); 8263 private native Rect nativeCursorNodeBounds(); 8264 private native int nativeCursorNodePointer(); 8265 private native boolean nativeCursorIntersects(Rect visibleRect); 8266 private native boolean nativeCursorIsAnchor(); 8267 private native boolean nativeCursorIsTextInput(); 8268 private native Point nativeCursorPosition(); 8269 private native String nativeCursorText(); 8270 /** 8271 * Returns true if the native cursor node says it wants to handle key events 8272 * (ala plugins). This can only be called if mNativeClass is non-zero! 8273 */ 8274 private native boolean nativeCursorWantsKeyEvents(); 8275 private native void nativeDebugDump(); 8276 private native void nativeDestroy(); 8277 8278 /** 8279 * Draw the picture set with a background color and extra. If 8280 * "splitIfNeeded" is true and the return value is not 0, the return value 8281 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 8282 * native allocation can be freed. 8283 */ 8284 private native int nativeDraw(Canvas canvas, int color, int extra, 8285 boolean splitIfNeeded); 8286 private native void nativeDumpDisplayTree(String urlOrNull); 8287 private native boolean nativeEvaluateLayersAnimations(); 8288 private native int nativeGetDrawGLFunction(Rect rect, float scale, int extras); 8289 private native void nativeUpdateDrawGLFunction(Rect rect); 8290 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 8291 private native void nativeExtendSelection(int x, int y); 8292 private native int nativeFindAll(String findLower, String findUpper, 8293 boolean sameAsLastSearch); 8294 private native void nativeFindNext(boolean forward); 8295 /* package */ native int nativeFocusCandidateFramePointer(); 8296 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 8297 /* package */ native boolean nativeFocusCandidateIsPassword(); 8298 private native boolean nativeFocusCandidateIsRtlText(); 8299 private native boolean nativeFocusCandidateIsTextInput(); 8300 /* package */ native int nativeFocusCandidateMaxLength(); 8301 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 8302 /* package */ native String nativeFocusCandidateName(); 8303 private native Rect nativeFocusCandidateNodeBounds(); 8304 /** 8305 * @return A Rect with left, top, right, bottom set to the corresponding 8306 * padding values in the focus candidate, if it is a textfield/textarea with 8307 * a style. Otherwise return null. This is not actually a rectangle; Rect 8308 * is being used to pass four integers. 8309 */ 8310 private native Rect nativeFocusCandidatePaddingRect(); 8311 /* package */ native int nativeFocusCandidatePointer(); 8312 private native String nativeFocusCandidateText(); 8313 /* package */ native float nativeFocusCandidateTextSize(); 8314 /* package */ native int nativeFocusCandidateLineHeight(); 8315 /** 8316 * Returns an integer corresponding to WebView.cpp::type. 8317 * See WebTextView.setType() 8318 */ 8319 private native int nativeFocusCandidateType(); 8320 private native boolean nativeFocusIsPlugin(); 8321 private native Rect nativeFocusNodeBounds(); 8322 /* package */ native int nativeFocusNodePointer(); 8323 private native Rect nativeGetCursorRingBounds(); 8324 private native String nativeGetSelection(); 8325 private native boolean nativeHasCursorNode(); 8326 private native boolean nativeHasFocusNode(); 8327 private native void nativeHideCursor(); 8328 private native boolean nativeHitSelection(int x, int y); 8329 private native String nativeImageURI(int x, int y); 8330 private native void nativeInstrumentReport(); 8331 private native Rect nativeLayerBounds(int layer); 8332 /* package */ native boolean nativeMoveCursorToNextTextInput(); 8333 // return true if the page has been scrolled 8334 private native boolean nativeMotionUp(int x, int y, int slop); 8335 // returns false if it handled the key 8336 private native boolean nativeMoveCursor(int keyCode, int count, 8337 boolean noScroll); 8338 private native int nativeMoveGeneration(); 8339 private native void nativeMoveSelection(int x, int y); 8340 /** 8341 * @return true if the page should get the shift and arrow keys, rather 8342 * than select text/navigation. 8343 * 8344 * If the focus is a plugin, or if the focus and cursor match and are 8345 * a contentEditable element, then the page should handle these keys. 8346 */ 8347 private native boolean nativePageShouldHandleShiftAndArrows(); 8348 private native boolean nativePointInNavCache(int x, int y, int slop); 8349 // Like many other of our native methods, you must make sure that 8350 // mNativeClass is not null before calling this method. 8351 private native void nativeRecordButtons(boolean focused, 8352 boolean pressed, boolean invalidate); 8353 private native void nativeResetSelection(); 8354 private native Point nativeSelectableText(); 8355 private native void nativeSelectAll(); 8356 private native void nativeSelectBestAt(Rect rect); 8357 private native void nativeSelectAt(int x, int y); 8358 private native int nativeSelectionX(); 8359 private native int nativeSelectionY(); 8360 private native int nativeFindIndex(); 8361 private native void nativeSetExtendSelection(); 8362 private native void nativeSetFindIsEmpty(); 8363 private native void nativeSetFindIsUp(boolean isUp); 8364 private native void nativeSetHeightCanMeasure(boolean measure); 8365 private native void nativeSetBaseLayer(int layer, Rect invalRect, 8366 boolean showVisualIndciator); 8367 private native void nativeShowCursorTimed(); 8368 private native void nativeReplaceBaseContent(int content); 8369 private native void nativeCopyBaseContentToPicture(Picture pict); 8370 private native boolean nativeHasContent(); 8371 private native void nativeSetSelectionPointer(boolean set, 8372 float scale, int x, int y); 8373 private native boolean nativeStartSelection(int x, int y); 8374 private native void nativeStopGL(); 8375 private native Rect nativeSubtractLayers(Rect content); 8376 private native int nativeTextGeneration(); 8377 // Never call this version except by updateCachedTextfield(String) - 8378 // we always want to pass in our generation number. 8379 private native void nativeUpdateCachedTextfield(String updatedText, 8380 int generation); 8381 private native boolean nativeWordSelection(int x, int y); 8382 // return NO_LEFTEDGE means failure. 8383 static final int NO_LEFTEDGE = -1; 8384 native int nativeGetBlockLeftEdge(int x, int y, float scale); 8385 8386 private native void nativeSetExpandedTileBounds(boolean enabled); 8387 8388 // Returns a pointer to the scrollable LayerAndroid at the given point. 8389 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 8390 Rect scrollBounds); 8391 /** 8392 * Scroll the specified layer. 8393 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 8394 * @param newX Destination x position to which to scroll. 8395 * @param newY Destination y position to which to scroll. 8396 * @return True if the layer is successfully scrolled. 8397 */ 8398 private native boolean nativeScrollLayer(int layer, int newX, int newY); 8399} 8400