WebView.java revision 15bfa5358e5e3829cfaa1e88f7c46e93e50458e1
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.BroadcastReceiver; 22import android.content.ClipboardManager; 23import android.content.Context; 24import android.content.DialogInterface; 25import android.content.DialogInterface.OnCancelListener; 26import android.content.Intent; 27import android.content.IntentFilter; 28import android.content.pm.PackageInfo; 29import android.content.pm.PackageManager; 30import android.content.res.Configuration; 31import android.database.DataSetObserver; 32import android.graphics.Bitmap; 33import android.graphics.BitmapFactory; 34import android.graphics.BitmapShader; 35import android.graphics.Canvas; 36import android.graphics.Color; 37import android.graphics.CornerPathEffect; 38import android.graphics.DrawFilter; 39import android.graphics.Paint; 40import android.graphics.PaintFlagsDrawFilter; 41import android.graphics.Picture; 42import android.graphics.Point; 43import android.graphics.Rect; 44import android.graphics.RectF; 45import android.graphics.Region; 46import android.graphics.Shader; 47import android.graphics.drawable.Drawable; 48import android.net.Proxy; 49import android.net.ProxyProperties; 50import android.net.Uri; 51import android.net.http.SslCertificate; 52import android.os.AsyncTask; 53import android.os.Bundle; 54import android.os.Handler; 55import android.os.Message; 56import android.provider.Settings; 57import android.speech.tts.TextToSpeech; 58import android.text.Selection; 59import android.text.Spannable; 60import android.util.AttributeSet; 61import android.util.EventLog; 62import android.util.Log; 63import android.view.Gravity; 64import android.view.HardwareCanvas; 65import android.view.KeyCharacterMap; 66import android.view.KeyEvent; 67import android.view.LayoutInflater; 68import android.view.MotionEvent; 69import android.view.ScaleGestureDetector; 70import android.view.SoundEffectConstants; 71import android.view.VelocityTracker; 72import android.view.View; 73import android.view.ViewConfiguration; 74import android.view.ViewGroup; 75import android.view.ViewParent; 76import android.view.ViewTreeObserver; 77import android.view.accessibility.AccessibilityManager; 78import android.view.inputmethod.EditorInfo; 79import android.view.inputmethod.InputConnection; 80import android.view.inputmethod.InputMethodManager; 81import android.webkit.WebTextView.AutoCompleteAdapter; 82import android.webkit.WebViewCore.EventHub; 83import android.webkit.WebViewCore.TouchEventData; 84import android.webkit.WebViewCore.TouchHighlightData; 85import android.widget.AbsoluteLayout; 86import android.widget.Adapter; 87import android.widget.AdapterView; 88import android.widget.AdapterView.OnItemClickListener; 89import android.widget.ArrayAdapter; 90import android.widget.CheckedTextView; 91import android.widget.LinearLayout; 92import android.widget.ListView; 93import android.widget.OverScroller; 94import android.widget.Toast; 95 96import java.io.File; 97import java.io.FileInputStream; 98import java.io.FileNotFoundException; 99import java.io.FileOutputStream; 100import java.net.URLDecoder; 101import java.util.ArrayList; 102import java.util.HashMap; 103import java.util.HashSet; 104import java.util.List; 105import java.util.Map; 106import java.util.Set; 107import java.util.regex.Matcher; 108import java.util.regex.Pattern; 109 110import junit.framework.Assert; 111 112/** 113 * <p>A View that displays web pages. This class is the basis upon which you 114 * can roll your own web browser or simply display some online content within your Activity. 115 * It uses the WebKit rendering engine to display 116 * web pages and includes methods to navigate forward and backward 117 * through a history, zoom in and out, perform text searches and more.</p> 118 * <p>To enable the built-in zoom, set 119 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 120 * (introduced in API version 3). 121 * <p>Note that, in order for your Activity to access the Internet and load web pages 122 * in a WebView, you must add the {@code INTERNET} permissions to your 123 * Android Manifest file:</p> 124 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 125 * 126 * <p>This must be a child of the <a 127 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 128 * element.</p> 129 * 130 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 131 * tutorial</a>.</p> 132 * 133 * <h3>Basic usage</h3> 134 * 135 * <p>By default, a WebView provides no browser-like widgets, does not 136 * enable JavaScript and web page errors are ignored. If your goal is only 137 * to display some HTML as a part of your UI, this is probably fine; 138 * the user won't need to interact with the web page beyond reading 139 * it, and the web page won't need to interact with the user. If you 140 * actually want a full-blown web browser, then you probably want to 141 * invoke the Browser application with a URL Intent rather than show it 142 * with a WebView. For example: 143 * <pre> 144 * Uri uri = Uri.parse("http://www.example.com"); 145 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 146 * startActivity(intent); 147 * </pre> 148 * <p>See {@link android.content.Intent} for more information.</p> 149 * 150 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 151 * or set the entire Activity window as a WebView during {@link 152 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 153 * <pre class="prettyprint"> 154 * WebView webview = new WebView(this); 155 * setContentView(webview); 156 * </pre> 157 * 158 * <p>Then load the desired web page:</p> 159 * <pre> 160 * // Simplest usage: note that an exception will NOT be thrown 161 * // if there is an error loading this page (see below). 162 * webview.loadUrl("http://slashdot.org/"); 163 * 164 * // OR, you can also load from an HTML string: 165 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 166 * webview.loadData(summary, "text/html", "utf-8"); 167 * // ... although note that there are restrictions on what this HTML can do. 168 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 169 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 170 * </pre> 171 * 172 * <p>A WebView has several customization points where you can add your 173 * own behavior. These are:</p> 174 * 175 * <ul> 176 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 177 * This class is called when something that might impact a 178 * browser UI happens, for instance, progress updates and 179 * JavaScript alerts are sent here (see <a 180 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 181 * </li> 182 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 183 * It will be called when things happen that impact the 184 * rendering of the content, eg, errors or form submissions. You 185 * can also intercept URL loading here (via {@link 186 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 187 * shouldOverrideUrlLoading()}).</li> 188 * <li>Modifying the {@link android.webkit.WebSettings}, such as 189 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 190 * setJavaScriptEnabled()}. </li> 191 * <li>Adding JavaScript-to-Java interfaces with the {@link 192 * android.webkit.WebView#addJavascriptInterface} method. 193 * This lets you bind Java objects into the WebView so they can be 194 * controlled from the web pages JavaScript.</li> 195 * </ul> 196 * 197 * <p>Here's a more complicated example, showing error handling, 198 * settings, and progress notification:</p> 199 * 200 * <pre class="prettyprint"> 201 * // Let's display the progress in the activity title bar, like the 202 * // browser app does. 203 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 204 * 205 * webview.getSettings().setJavaScriptEnabled(true); 206 * 207 * final Activity activity = this; 208 * webview.setWebChromeClient(new WebChromeClient() { 209 * public void onProgressChanged(WebView view, int progress) { 210 * // Activities and WebViews measure progress with different scales. 211 * // The progress meter will automatically disappear when we reach 100% 212 * activity.setProgress(progress * 1000); 213 * } 214 * }); 215 * webview.setWebViewClient(new WebViewClient() { 216 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 217 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 218 * } 219 * }); 220 * 221 * webview.loadUrl("http://slashdot.org/"); 222 * </pre> 223 * 224 * <h3>Cookie and window management</h3> 225 * 226 * <p>For obvious security reasons, your application has its own 227 * cache, cookie store etc.—it does not share the Browser 228 * application's data. Cookies are managed on a separate thread, so 229 * operations like index building don't block the UI 230 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 231 * if you want to use cookies in your application. 232 * </p> 233 * 234 * <p>By default, requests by the HTML to open new windows are 235 * ignored. This is true whether they be opened by JavaScript or by 236 * the target attribute on a link. You can customize your 237 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 238 * and render them in whatever manner you want.</p> 239 * 240 * <p>The standard behavior for an Activity is to be destroyed and 241 * recreated when the device orientation or any other configuration changes. This will cause 242 * the WebView to reload the current page. If you don't want that, you 243 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 244 * changes, and then just leave the WebView alone. It'll automatically 245 * re-orient itself as appropriate. Read <a 246 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 247 * more information about how to handle configuration changes during runtime.</p> 248 * 249 * 250 * <h3>Building web pages to support different screen densities</h3> 251 * 252 * <p>The screen density of a device is based on the screen resolution. A screen with low density 253 * has fewer available pixels per inch, where a screen with high density 254 * has more — sometimes significantly more — pixels per inch. The density of a 255 * screen is important because, other things being equal, a UI element (such as a button) whose 256 * height and width are defined in terms of screen pixels will appear larger on the lower density 257 * screen and smaller on the higher density screen. 258 * For simplicity, Android collapses all actual screen densities into three generalized densities: 259 * high, medium, and low.</p> 260 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 261 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 262 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 263 * are bigger). 264 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 265 * you (as a web developer) target screens with different screen densities.</p> 266 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 267 * <ul> 268 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 269 * default scaling factor used for the current device. For example, if the value of {@code 270 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 271 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 272 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 273 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 274 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 275 * (discussed below), then you can stop this default scaling behavior.</li> 276 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 277 * densities for which this style sheet is to be used. The corresponding value should be either 278 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 279 * density, or high density screens, respectively. For example: 280 * <pre> 281 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 282 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 283 * which is the high density pixel ratio.</p> 284 * </li> 285 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 286 * this to specify the target density for which the web page is designed, using the following 287 * values: 288 * <ul> 289 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 290 * occurs.</li> 291 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 292 * as appropriate.</li> 293 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 294 * low density screens scale down. This is also the default behavior.</li> 295 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 296 * as appropriate.</li> 297 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 298 * values are 70-400).</li> 299 * </ul> 300 * <p>Here's an example meta tag to specify the target density:</p> 301 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 302 * </ul> 303 * <p>If you want to modify your web page for different densities, by using the {@code 304 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 305 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 306 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 307 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 308 * 309 * 310 */ 311@Widget 312public class WebView extends AbsoluteLayout 313 implements ViewTreeObserver.OnGlobalFocusChangeListener, 314 ViewGroup.OnHierarchyChangeListener { 315 316 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 317 public void onGlobalLayout() { 318 if (isShown()) { 319 setGLRectViewport(); 320 } 321 } 322 } 323 324 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 325 public void onScrollChanged() { 326 if (isShown()) { 327 setGLRectViewport(); 328 } 329 } 330 } 331 332 // The listener to capture global layout change event. 333 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 334 335 // The listener to capture scroll event. 336 private InnerScrollChangedListener mScrollChangedListener = null; 337 338 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 339 // the screen all-the-time. Good for profiling our drawing code 340 static private final boolean AUTO_REDRAW_HACK = false; 341 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 342 private boolean mAutoRedraw; 343 344 // Reference to the AlertDialog displayed by InvokeListBox. 345 // It's used to dismiss the dialog in destroy if not done before. 346 private AlertDialog mListBoxDialog = null; 347 348 static final String LOGTAG = "webview"; 349 350 private ZoomManager mZoomManager; 351 352 private Rect mGLRectViewport = new Rect(); 353 private boolean mGLViewportEmpty = false; 354 355 /** 356 * Transportation object for returning WebView across thread boundaries. 357 */ 358 public class WebViewTransport { 359 private WebView mWebview; 360 361 /** 362 * Set the WebView to the transportation object. 363 * @param webview The WebView to transport. 364 */ 365 public synchronized void setWebView(WebView webview) { 366 mWebview = webview; 367 } 368 369 /** 370 * Return the WebView object. 371 * @return WebView The transported WebView object. 372 */ 373 public synchronized WebView getWebView() { 374 return mWebview; 375 } 376 } 377 378 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 379 private final CallbackProxy mCallbackProxy; 380 381 private final WebViewDatabase mDatabase; 382 383 // SSL certificate for the main top-level page (if secure) 384 private SslCertificate mCertificate; 385 386 // Native WebView pointer that is 0 until the native object has been 387 // created. 388 private int mNativeClass; 389 // This would be final but it needs to be set to null when the WebView is 390 // destroyed. 391 private WebViewCore mWebViewCore; 392 // Handler for dispatching UI messages. 393 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 394 private WebTextView mWebTextView; 395 // Used to ignore changes to webkit text that arrives to the UI side after 396 // more key events. 397 private int mTextGeneration; 398 399 /* package */ void incrementTextGeneration() { mTextGeneration++; } 400 401 // Used by WebViewCore to create child views. 402 /* package */ final ViewManager mViewManager; 403 404 // Used to display in full screen mode 405 PluginFullScreenHolder mFullScreenHolder; 406 407 /** 408 * Position of the last touch event in pixels. 409 * Use integer to prevent loss of dragging delta calculation accuracy; 410 * which was done in float and converted to integer, and resulted in gradual 411 * and compounding touch position and view dragging mismatch. 412 */ 413 private int mLastTouchX; 414 private int mLastTouchY; 415 416 /** 417 * Time of the last touch event. 418 */ 419 private long mLastTouchTime; 420 421 /** 422 * Time of the last time sending touch event to WebViewCore 423 */ 424 private long mLastSentTouchTime; 425 426 /** 427 * The minimum elapsed time before sending another ACTION_MOVE event to 428 * WebViewCore. This really should be tuned for each type of the devices. 429 * For example in Google Map api test case, it takes Dream device at least 430 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 431 * triggering the layout and drawing the picture. While the same process 432 * takes 60+ms on the current high speed device. If we make 433 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 434 * to WebViewCore queue and the real layout and draw events will be pushed 435 * to further, which slows down the refresh rate. Choose 50 to favor the 436 * current high speed devices. For Dream like devices, 100 is a better 437 * choice. Maybe make this in the buildspec later. 438 * (Update 12/14/2010: changed to 0 since current device should be able to 439 * handle the raw events and Map team voted to have the raw events too. 440 */ 441 private static final int TOUCH_SENT_INTERVAL = 0; 442 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 443 444 /** 445 * Helper class to get velocity for fling 446 */ 447 VelocityTracker mVelocityTracker; 448 private int mMaximumFling; 449 private float mLastVelocity; 450 private float mLastVelX; 451 private float mLastVelY; 452 453 // The id of the native layer being scrolled. 454 private int mScrollingLayer; 455 private Rect mScrollingLayerRect = new Rect(); 456 457 // only trigger accelerated fling if the new velocity is at least 458 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 459 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 460 461 /** 462 * Touch mode 463 */ 464 private int mTouchMode = TOUCH_DONE_MODE; 465 private static final int TOUCH_INIT_MODE = 1; 466 private static final int TOUCH_DRAG_START_MODE = 2; 467 private static final int TOUCH_DRAG_MODE = 3; 468 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 469 private static final int TOUCH_SHORTPRESS_MODE = 5; 470 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 471 private static final int TOUCH_DONE_MODE = 7; 472 private static final int TOUCH_PINCH_DRAG = 8; 473 private static final int TOUCH_DRAG_LAYER_MODE = 9; 474 475 // Whether to forward the touch events to WebCore 476 // Can only be set by WebKit via JNI. 477 private boolean mForwardTouchEvents = false; 478 479 // Whether to prevent default during touch. The initial value depends on 480 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 481 // for touch down. Otherwise UI will wait for the answer of the first 482 // confirmed move before taking over the control. 483 private static final int PREVENT_DEFAULT_NO = 0; 484 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 485 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 486 private static final int PREVENT_DEFAULT_YES = 3; 487 private static final int PREVENT_DEFAULT_IGNORE = 4; 488 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 489 490 // true when the touch movement exceeds the slop 491 private boolean mConfirmMove; 492 493 // if true, touch events will be first processed by WebCore, if prevent 494 // default is not set, the UI will continue handle them. 495 private boolean mDeferTouchProcess; 496 497 // Currently, multi-touch events are sent to WebKit first then back to 498 // WebView while single-touch events are handled in WebView first. 499 // So there is a chance that a single-touch move event is handled in WebView 500 // before multi-touch events are finished. 501 // if mIsHandlingMultiTouch is true, which means multi-touch event handling 502 // is not finished, then any single-touch move event will be skipped. 503 // FIXME: send single-touch events to WebKit first then back to WebView. 504 private boolean mIsHandlingMultiTouch = false; 505 506 // to avoid interfering with the current touch events, track them 507 // separately. Currently no snapping or fling in the deferred process mode 508 private int mDeferTouchMode = TOUCH_DONE_MODE; 509 private float mLastDeferTouchX; 510 private float mLastDeferTouchY; 511 512 // To keep track of whether the current drag was initiated by a WebTextView, 513 // so that we know not to hide the cursor 514 boolean mDragFromTextInput; 515 516 // Whether or not to draw the cursor ring. 517 private boolean mDrawCursorRing = true; 518 519 // true if onPause has been called (and not onResume) 520 private boolean mIsPaused; 521 522 private HitTestResult mInitialHitTestResult; 523 524 /** 525 * Customizable constant 526 */ 527 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 528 private int mTouchSlopSquare; 529 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 530 private int mDoubleTapSlopSquare; 531 // pre-computed density adjusted navigation slop 532 private int mNavSlop; 533 // This should be ViewConfiguration.getTapTimeout() 534 // But system time out is 100ms, which is too short for the browser. 535 // In the browser, if it switches out of tap too soon, jump tap won't work. 536 private static final int TAP_TIMEOUT = 200; 537 // This should be ViewConfiguration.getLongPressTimeout() 538 // But system time out is 500ms, which is too short for the browser. 539 // With a short timeout, it's difficult to treat trigger a short press. 540 private static final int LONG_PRESS_TIMEOUT = 1000; 541 // needed to avoid flinging after a pause of no movement 542 private static final int MIN_FLING_TIME = 250; 543 // draw unfiltered after drag is held without movement 544 private static final int MOTIONLESS_TIME = 100; 545 // The amount of content to overlap between two screens when going through 546 // pages with the space bar, in pixels. 547 private static final int PAGE_SCROLL_OVERLAP = 24; 548 549 /** 550 * These prevent calling requestLayout if either dimension is fixed. This 551 * depends on the layout parameters and the measure specs. 552 */ 553 boolean mWidthCanMeasure; 554 boolean mHeightCanMeasure; 555 556 // Remember the last dimensions we sent to the native side so we can avoid 557 // sending the same dimensions more than once. 558 int mLastWidthSent; 559 int mLastHeightSent; 560 // Since view height sent to webkit could be fixed to avoid relayout, this 561 // value records the last sent actual view height. 562 int mLastActualHeightSent; 563 564 private int mContentWidth; // cache of value from WebViewCore 565 private int mContentHeight; // cache of value from WebViewCore 566 567 // Need to have the separate control for horizontal and vertical scrollbar 568 // style than the View's single scrollbar style 569 private boolean mOverlayHorizontalScrollbar = true; 570 private boolean mOverlayVerticalScrollbar = false; 571 572 // our standard speed. this way small distances will be traversed in less 573 // time than large distances, but we cap the duration, so that very large 574 // distances won't take too long to get there. 575 private static final int STD_SPEED = 480; // pixels per second 576 // time for the longest scroll animation 577 private static final int MAX_DURATION = 750; // milliseconds 578 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 579 580 // Used by OverScrollGlow 581 OverScroller mScroller; 582 583 private boolean mInOverScrollMode = false; 584 private static Paint mOverScrollBackground; 585 private static Paint mOverScrollBorder; 586 587 private boolean mWrapContent; 588 private static final int MOTIONLESS_FALSE = 0; 589 private static final int MOTIONLESS_PENDING = 1; 590 private static final int MOTIONLESS_TRUE = 2; 591 private static final int MOTIONLESS_IGNORE = 3; 592 private int mHeldMotionless; 593 594 // An instance for injecting accessibility in WebViews with disabled 595 // JavaScript or ones for which no accessibility script exists 596 private AccessibilityInjector mAccessibilityInjector; 597 598 // flag indicating if accessibility script is injected so we 599 // know to handle Shift and arrows natively first 600 private boolean mAccessibilityScriptInjected; 601 602 // the color used to highlight the touch rectangles 603 private static final int mHightlightColor = 0x33000000; 604 // the round corner for the highlight path 605 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 606 // the region indicating where the user touched on the screen 607 private Region mTouchHighlightRegion = new Region(); 608 // the paint for the touch highlight 609 private Paint mTouchHightlightPaint; 610 // debug only 611 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 612 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 613 private Paint mTouchCrossHairColor; 614 private int mTouchHighlightX; 615 private int mTouchHighlightY; 616 617 /* 618 * Private message ids 619 */ 620 private static final int REMEMBER_PASSWORD = 1; 621 private static final int NEVER_REMEMBER_PASSWORD = 2; 622 private static final int SWITCH_TO_SHORTPRESS = 3; 623 private static final int SWITCH_TO_LONGPRESS = 4; 624 private static final int RELEASE_SINGLE_TAP = 5; 625 private static final int REQUEST_FORM_DATA = 6; 626 private static final int RESUME_WEBCORE_PRIORITY = 7; 627 private static final int DRAG_HELD_MOTIONLESS = 8; 628 private static final int AWAKEN_SCROLL_BARS = 9; 629 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 630 private static final int SCROLL_SELECT_TEXT = 11; 631 632 633 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 634 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 635 636 /* 637 * Package message ids 638 */ 639 static final int SCROLL_TO_MSG_ID = 101; 640 static final int NEW_PICTURE_MSG_ID = 105; 641 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 642 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 643 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 644 static final int UPDATE_ZOOM_RANGE = 109; 645 static final int UNHANDLED_NAV_KEY = 110; 646 static final int CLEAR_TEXT_ENTRY = 111; 647 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 648 static final int SHOW_RECT_MSG_ID = 113; 649 static final int LONG_PRESS_CENTER = 114; 650 static final int PREVENT_TOUCH_ID = 115; 651 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 652 // obj=Rect in doc coordinates 653 static final int INVAL_RECT_MSG_ID = 117; 654 static final int REQUEST_KEYBOARD = 118; 655 static final int DO_MOTION_UP = 119; 656 static final int SHOW_FULLSCREEN = 120; 657 static final int HIDE_FULLSCREEN = 121; 658 static final int DOM_FOCUS_CHANGED = 122; 659 static final int REPLACE_BASE_CONTENT = 123; 660 static final int FORM_DID_BLUR = 124; 661 static final int RETURN_LABEL = 125; 662 static final int FIND_AGAIN = 126; 663 static final int CENTER_FIT_RECT = 127; 664 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 665 static final int SET_SCROLLBAR_MODES = 129; 666 static final int SELECTION_STRING_CHANGED = 130; 667 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 668 static final int SAVE_WEBARCHIVE_FINISHED = 132; 669 670 static final int SET_AUTOFILLABLE = 133; 671 static final int AUTOFILL_COMPLETE = 134; 672 673 static final int SELECT_AT = 135; 674 static final int SCREEN_ON = 136; 675 676 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 677 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 678 679 static final String[] HandlerPrivateDebugString = { 680 "REMEMBER_PASSWORD", // = 1; 681 "NEVER_REMEMBER_PASSWORD", // = 2; 682 "SWITCH_TO_SHORTPRESS", // = 3; 683 "SWITCH_TO_LONGPRESS", // = 4; 684 "RELEASE_SINGLE_TAP", // = 5; 685 "REQUEST_FORM_DATA", // = 6; 686 "RESUME_WEBCORE_PRIORITY", // = 7; 687 "DRAG_HELD_MOTIONLESS", // = 8; 688 "AWAKEN_SCROLL_BARS", // = 9; 689 "PREVENT_DEFAULT_TIMEOUT", // = 10; 690 "SCROLL_SELECT_TEXT" // = 11; 691 }; 692 693 static final String[] HandlerPackageDebugString = { 694 "SCROLL_TO_MSG_ID", // = 101; 695 "102", // = 102; 696 "103", // = 103; 697 "104", // = 104; 698 "NEW_PICTURE_MSG_ID", // = 105; 699 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 700 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 701 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 702 "UPDATE_ZOOM_RANGE", // = 109; 703 "UNHANDLED_NAV_KEY", // = 110; 704 "CLEAR_TEXT_ENTRY", // = 111; 705 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 706 "SHOW_RECT_MSG_ID", // = 113; 707 "LONG_PRESS_CENTER", // = 114; 708 "PREVENT_TOUCH_ID", // = 115; 709 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 710 "INVAL_RECT_MSG_ID", // = 117; 711 "REQUEST_KEYBOARD", // = 118; 712 "DO_MOTION_UP", // = 119; 713 "SHOW_FULLSCREEN", // = 120; 714 "HIDE_FULLSCREEN", // = 121; 715 "DOM_FOCUS_CHANGED", // = 122; 716 "REPLACE_BASE_CONTENT", // = 123; 717 "FORM_DID_BLUR", // = 124; 718 "RETURN_LABEL", // = 125; 719 "FIND_AGAIN", // = 126; 720 "CENTER_FIT_RECT", // = 127; 721 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 722 "SET_SCROLLBAR_MODES", // = 129; 723 "SELECTION_STRING_CHANGED", // = 130; 724 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 725 "SAVE_WEBARCHIVE_FINISHED", // = 132; 726 "SET_AUTOFILLABLE", // = 133; 727 "AUTOFILL_COMPLETE", // = 134; 728 "SELECT_AT", // = 135; 729 "SCREEN_ON" // = 136; 730 }; 731 732 // If the site doesn't use the viewport meta tag to specify the viewport, 733 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 734 static final int DEFAULT_VIEWPORT_WIDTH = 980; 735 736 // normally we try to fit the content to the minimum preferred width 737 // calculated by the Webkit. To avoid the bad behavior when some site's 738 // minimum preferred width keeps growing when changing the viewport width or 739 // the minimum preferred width is huge, an upper limit is needed. 740 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 741 742 // initial scale in percent. 0 means using default. 743 private int mInitialScaleInPercent = 0; 744 745 // Whether or not a scroll event should be sent to webkit. This is only set 746 // to false when restoring the scroll position. 747 private boolean mSendScrollEvent = true; 748 749 private int mSnapScrollMode = SNAP_NONE; 750 private static final int SNAP_NONE = 0; 751 private static final int SNAP_LOCK = 1; // not a separate state 752 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 753 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 754 private boolean mSnapPositive; 755 756 // keep these in sync with their counterparts in WebView.cpp 757 private static final int DRAW_EXTRAS_NONE = 0; 758 private static final int DRAW_EXTRAS_FIND = 1; 759 private static final int DRAW_EXTRAS_SELECTION = 2; 760 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 761 762 // keep this in sync with WebCore:ScrollbarMode in WebKit 763 private static final int SCROLLBAR_AUTO = 0; 764 private static final int SCROLLBAR_ALWAYSOFF = 1; 765 // as we auto fade scrollbar, this is ignored. 766 private static final int SCROLLBAR_ALWAYSON = 2; 767 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 768 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 769 770 // constants for determining script injection strategy 771 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 772 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 773 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 774 775 // the alias via which accessibility JavaScript interface is exposed 776 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 777 778 // JavaScript to inject the script chooser which will 779 // pick the right script for the current URL 780 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 781 "javascript:(function() {" + 782 " var chooser = document.createElement('script');" + 783 " chooser.type = 'text/javascript';" + 784 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 785 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 786 " })();"; 787 788 // Regular expression that matches the "axs" URL parameter. 789 // The value of 0 means the accessibility script is opted out 790 // The value of 1 means the accessibility script is already injected 791 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 792 793 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 794 private TextToSpeech mTextToSpeech; 795 796 // variable to cache the above pattern in case accessibility is enabled. 797 private Pattern mMatchAxsUrlParameterPattern; 798 799 /** 800 * Max distance to overscroll by in pixels. 801 * This how far content can be pulled beyond its normal bounds by the user. 802 */ 803 private int mOverscrollDistance; 804 805 /** 806 * Max distance to overfling by in pixels. 807 * This is how far flinged content can move beyond the end of its normal bounds. 808 */ 809 private int mOverflingDistance; 810 811 private OverScrollGlow mOverScrollGlow; 812 813 // Used to match key downs and key ups 814 private boolean mGotKeyDown; 815 816 /* package */ static boolean mLogEvent = true; 817 818 // for event log 819 private long mLastTouchUpTime = 0; 820 821 private WebViewCore.AutoFillData mAutoFillData; 822 823 /** 824 * URI scheme for telephone number 825 */ 826 public static final String SCHEME_TEL = "tel:"; 827 /** 828 * URI scheme for email address 829 */ 830 public static final String SCHEME_MAILTO = "mailto:"; 831 /** 832 * URI scheme for map address 833 */ 834 public static final String SCHEME_GEO = "geo:0,0?q="; 835 836 private int mBackgroundColor = Color.WHITE; 837 838 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 839 private int mAutoScrollX = 0; 840 private int mAutoScrollY = 0; 841 private int mMinAutoScrollX = 0; 842 private int mMaxAutoScrollX = 0; 843 private int mMinAutoScrollY = 0; 844 private int mMaxAutoScrollY = 0; 845 private Rect mScrollingLayerBounds = new Rect(); 846 private boolean mSentAutoScrollMessage = false; 847 848 // Used to notify listeners of a new picture. 849 private PictureListener mPictureListener; 850 /** 851 * Interface to listen for new pictures as they change. 852 */ 853 public interface PictureListener { 854 /** 855 * Notify the listener that the picture has changed. 856 * @param view The WebView that owns the picture. 857 * @param picture The new picture. 858 */ 859 public void onNewPicture(WebView view, Picture picture); 860 } 861 862 // FIXME: Want to make this public, but need to change the API file. 863 public /*static*/ class HitTestResult { 864 /** 865 * Default HitTestResult, where the target is unknown 866 */ 867 public static final int UNKNOWN_TYPE = 0; 868 /** 869 * HitTestResult for hitting a HTML::a tag 870 */ 871 public static final int ANCHOR_TYPE = 1; 872 /** 873 * HitTestResult for hitting a phone number 874 */ 875 public static final int PHONE_TYPE = 2; 876 /** 877 * HitTestResult for hitting a map address 878 */ 879 public static final int GEO_TYPE = 3; 880 /** 881 * HitTestResult for hitting an email address 882 */ 883 public static final int EMAIL_TYPE = 4; 884 /** 885 * HitTestResult for hitting an HTML::img tag 886 */ 887 public static final int IMAGE_TYPE = 5; 888 /** 889 * HitTestResult for hitting a HTML::a tag which contains HTML::img 890 */ 891 public static final int IMAGE_ANCHOR_TYPE = 6; 892 /** 893 * HitTestResult for hitting a HTML::a tag with src=http 894 */ 895 public static final int SRC_ANCHOR_TYPE = 7; 896 /** 897 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 898 */ 899 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 900 /** 901 * HitTestResult for hitting an edit text area 902 */ 903 public static final int EDIT_TEXT_TYPE = 9; 904 905 private int mType; 906 private String mExtra; 907 908 HitTestResult() { 909 mType = UNKNOWN_TYPE; 910 } 911 912 private void setType(int type) { 913 mType = type; 914 } 915 916 private void setExtra(String extra) { 917 mExtra = extra; 918 } 919 920 public int getType() { 921 return mType; 922 } 923 924 public String getExtra() { 925 return mExtra; 926 } 927 } 928 929 /** 930 * Construct a new WebView with a Context object. 931 * @param context A Context object used to access application assets. 932 */ 933 public WebView(Context context) { 934 this(context, null); 935 } 936 937 /** 938 * Construct a new WebView with layout parameters. 939 * @param context A Context object used to access application assets. 940 * @param attrs An AttributeSet passed to our parent. 941 */ 942 public WebView(Context context, AttributeSet attrs) { 943 this(context, attrs, com.android.internal.R.attr.webViewStyle); 944 } 945 946 /** 947 * Construct a new WebView with layout parameters and a default style. 948 * @param context A Context object used to access application assets. 949 * @param attrs An AttributeSet passed to our parent. 950 * @param defStyle The default style resource ID. 951 */ 952 public WebView(Context context, AttributeSet attrs, int defStyle) { 953 this(context, attrs, defStyle, false); 954 } 955 956 /** 957 * Construct a new WebView with layout parameters and a default style. 958 * @param context A Context object used to access application assets. 959 * @param attrs An AttributeSet passed to our parent. 960 * @param defStyle The default style resource ID. 961 */ 962 public WebView(Context context, AttributeSet attrs, int defStyle, 963 boolean privateBrowsing) { 964 this(context, attrs, defStyle, null, privateBrowsing); 965 } 966 967 /** 968 * Construct a new WebView with layout parameters, a default style and a set 969 * of custom Javscript interfaces to be added to the WebView at initialization 970 * time. This guarantees that these interfaces will be available when the JS 971 * context is initialized. 972 * @param context A Context object used to access application assets. 973 * @param attrs An AttributeSet passed to our parent. 974 * @param defStyle The default style resource ID. 975 * @param javaScriptInterfaces is a Map of interface names, as keys, and 976 * object implementing those interfaces, as values. 977 * @hide pending API council approval. 978 */ 979 protected WebView(Context context, AttributeSet attrs, int defStyle, 980 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 981 super(context, attrs, defStyle); 982 983 // Used by the chrome stack to find application paths 984 JniUtil.setContext(context); 985 986 mCallbackProxy = new CallbackProxy(context, this); 987 mViewManager = new ViewManager(this); 988 L10nUtils.loadStrings(context); 989 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 990 mDatabase = WebViewDatabase.getInstance(context); 991 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 992 mZoomManager = new ZoomManager(this, mCallbackProxy); 993 994 /* The init method must follow the creation of certain member variables, 995 * such as the mZoomManager. 996 */ 997 init(); 998 setupPackageListener(context); 999 setupProxyListener(context); 1000 updateMultiTouchSupport(context); 1001 1002 if (privateBrowsing) { 1003 startPrivateBrowsing(); 1004 } 1005 1006 mAutoFillData = new WebViewCore.AutoFillData(); 1007 } 1008 1009 private static class ProxyReceiver extends BroadcastReceiver { 1010 @Override 1011 public void onReceive(Context context, Intent intent) { 1012 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1013 handleProxyBroadcast(intent); 1014 } 1015 } 1016 } 1017 1018 /* 1019 * A variable to track if there is a receiver added for PROXY_CHANGE_ACTION 1020 */ 1021 private static boolean sProxyReceiverAdded; 1022 1023 private static synchronized void setupProxyListener(Context context) { 1024 if (sProxyReceiverAdded) { 1025 return; 1026 } 1027 IntentFilter filter = new IntentFilter(); 1028 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1029 Intent currentProxy = context.getApplicationContext().registerReceiver( 1030 new ProxyReceiver(), filter); 1031 sProxyReceiverAdded = true; 1032 if (currentProxy != null) { 1033 handleProxyBroadcast(currentProxy); 1034 } 1035 } 1036 1037 private static void handleProxyBroadcast(Intent intent) { 1038 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1039 if (proxyProperties == null || proxyProperties.getHost() == null) { 1040 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, ""); 1041 return; 1042 } 1043 1044 String host = proxyProperties.getHost(); 1045 int port = proxyProperties.getPort(); 1046 if (port != 0) 1047 host += ":" + port; 1048 1049 // TODO: Handle exclusion list 1050 // The plan is to make an AndroidProxyResolver, and handle the blacklist 1051 // there 1052 String exclusionList = proxyProperties.getExclusionList(); 1053 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, host); 1054 } 1055 1056 /* 1057 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1058 * or ACTION_PACKAGE_REMOVED. 1059 */ 1060 private static boolean sPackageInstallationReceiverAdded = false; 1061 1062 /* 1063 * A set of Google packages we monitor for the 1064 * navigator.isApplicationInstalled() API. Add additional packages as 1065 * needed. 1066 */ 1067 private static Set<String> sGoogleApps; 1068 static { 1069 sGoogleApps = new HashSet<String>(); 1070 sGoogleApps.add("com.google.android.youtube"); 1071 } 1072 1073 private static class PackageListener extends BroadcastReceiver { 1074 @Override 1075 public void onReceive(Context context, Intent intent) { 1076 final String action = intent.getAction(); 1077 final String packageName = intent.getData().getSchemeSpecificPart(); 1078 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1079 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1080 // if it is replacing, refreshPlugins() when adding 1081 return; 1082 } 1083 1084 if (sGoogleApps.contains(packageName)) { 1085 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1086 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1087 } else { 1088 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1089 } 1090 } 1091 1092 PluginManager pm = PluginManager.getInstance(context); 1093 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1094 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1095 } 1096 } 1097 } 1098 1099 private void setupPackageListener(Context context) { 1100 1101 /* 1102 * we must synchronize the instance check and the creation of the 1103 * receiver to ensure that only ONE receiver exists for all WebView 1104 * instances. 1105 */ 1106 synchronized (WebView.class) { 1107 1108 // if the receiver already exists then we do not need to register it 1109 // again 1110 if (sPackageInstallationReceiverAdded) { 1111 return; 1112 } 1113 1114 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1115 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1116 filter.addDataScheme("package"); 1117 BroadcastReceiver packageListener = new PackageListener(); 1118 context.getApplicationContext().registerReceiver(packageListener, filter); 1119 sPackageInstallationReceiverAdded = true; 1120 } 1121 1122 // check if any of the monitored apps are already installed 1123 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1124 1125 @Override 1126 protected Set<String> doInBackground(Void... unused) { 1127 Set<String> installedPackages = new HashSet<String>(); 1128 PackageManager pm = mContext.getPackageManager(); 1129 List<PackageInfo> packages = pm.getInstalledPackages(0); 1130 for (PackageInfo p : packages) { 1131 if (sGoogleApps.contains(p.packageName)) { 1132 installedPackages.add(p.packageName); 1133 } 1134 } 1135 return installedPackages; 1136 } 1137 1138 // Executes on the UI thread 1139 @Override 1140 protected void onPostExecute(Set<String> installedPackages) { 1141 if (mWebViewCore != null) { 1142 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1143 } 1144 } 1145 }; 1146 task.execute(); 1147 } 1148 1149 void updateMultiTouchSupport(Context context) { 1150 mZoomManager.updateMultiTouchSupport(context); 1151 } 1152 1153 private void init() { 1154 setWillNotDraw(false); 1155 setFocusable(true); 1156 setFocusableInTouchMode(true); 1157 setClickable(true); 1158 setLongClickable(true); 1159 1160 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1161 int slop = configuration.getScaledTouchSlop(); 1162 mTouchSlopSquare = slop * slop; 1163 mMinLockSnapReverseDistance = slop; 1164 slop = configuration.getScaledDoubleTapSlop(); 1165 mDoubleTapSlopSquare = slop * slop; 1166 final float density = getContext().getResources().getDisplayMetrics().density; 1167 // use one line height, 16 based on our current default font, for how 1168 // far we allow a touch be away from the edge of a link 1169 mNavSlop = (int) (16 * density); 1170 mZoomManager.init(density); 1171 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1172 1173 // Compute the inverse of the density squared. 1174 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1175 1176 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1177 mOverflingDistance = configuration.getScaledOverflingDistance(); 1178 1179 setScrollBarStyle(super.getScrollBarStyle()); 1180 } 1181 1182 /** 1183 * Adds accessibility APIs to JavaScript. 1184 * 1185 * Note: This method is responsible to performing the necessary 1186 * check if the accessibility APIs should be exposed. 1187 */ 1188 private void addAccessibilityApisToJavaScript() { 1189 if (AccessibilityManager.getInstance(mContext).isEnabled() 1190 && getSettings().getJavaScriptEnabled()) { 1191 // exposing the TTS for now ... 1192 mTextToSpeech = new TextToSpeech(getContext(), null); 1193 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1194 } 1195 } 1196 1197 /** 1198 * Removes accessibility APIs from JavaScript. 1199 */ 1200 private void removeAccessibilityApisFromJavaScript() { 1201 // exposing the TTS for now ... 1202 if (mTextToSpeech != null) { 1203 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1204 mTextToSpeech.shutdown(); 1205 mTextToSpeech = null; 1206 } 1207 } 1208 1209 @Override 1210 public void setOverScrollMode(int mode) { 1211 super.setOverScrollMode(mode); 1212 if (mode != OVER_SCROLL_NEVER) { 1213 if (mOverScrollGlow == null) { 1214 mOverScrollGlow = new OverScrollGlow(this); 1215 } 1216 } else { 1217 mOverScrollGlow = null; 1218 } 1219 } 1220 1221 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1222 final float density = mContext.getResources().getDisplayMetrics().density 1223 * 100 / zoomDensity; 1224 mNavSlop = (int) (16 * density); 1225 mZoomManager.updateDefaultZoomDensity(density); 1226 } 1227 1228 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1229 String password, final Message resumeMsg) { 1230 boolean rVal = false; 1231 if (resumeMsg == null) { 1232 // null resumeMsg implies saving password silently 1233 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1234 } else { 1235 final Message remember = mPrivateHandler.obtainMessage( 1236 REMEMBER_PASSWORD); 1237 remember.getData().putString("host", schemePlusHost); 1238 remember.getData().putString("username", username); 1239 remember.getData().putString("password", password); 1240 remember.obj = resumeMsg; 1241 1242 final Message neverRemember = mPrivateHandler.obtainMessage( 1243 NEVER_REMEMBER_PASSWORD); 1244 neverRemember.getData().putString("host", schemePlusHost); 1245 neverRemember.getData().putString("username", username); 1246 neverRemember.getData().putString("password", password); 1247 neverRemember.obj = resumeMsg; 1248 1249 new AlertDialog.Builder(getContext()) 1250 .setTitle(com.android.internal.R.string.save_password_label) 1251 .setMessage(com.android.internal.R.string.save_password_message) 1252 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1253 new DialogInterface.OnClickListener() { 1254 public void onClick(DialogInterface dialog, int which) { 1255 resumeMsg.sendToTarget(); 1256 } 1257 }) 1258 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1259 new DialogInterface.OnClickListener() { 1260 public void onClick(DialogInterface dialog, int which) { 1261 remember.sendToTarget(); 1262 } 1263 }) 1264 .setNegativeButton(com.android.internal.R.string.save_password_never, 1265 new DialogInterface.OnClickListener() { 1266 public void onClick(DialogInterface dialog, int which) { 1267 neverRemember.sendToTarget(); 1268 } 1269 }) 1270 .setOnCancelListener(new OnCancelListener() { 1271 public void onCancel(DialogInterface dialog) { 1272 resumeMsg.sendToTarget(); 1273 } 1274 }).show(); 1275 // Return true so that WebViewCore will pause while the dialog is 1276 // up. 1277 rVal = true; 1278 } 1279 return rVal; 1280 } 1281 1282 @Override 1283 public void setScrollBarStyle(int style) { 1284 if (style == View.SCROLLBARS_INSIDE_INSET 1285 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1286 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1287 } else { 1288 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1289 } 1290 super.setScrollBarStyle(style); 1291 } 1292 1293 /** 1294 * Specify whether the horizontal scrollbar has overlay style. 1295 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1296 */ 1297 public void setHorizontalScrollbarOverlay(boolean overlay) { 1298 mOverlayHorizontalScrollbar = overlay; 1299 } 1300 1301 /** 1302 * Specify whether the vertical scrollbar has overlay style. 1303 * @param overlay TRUE if vertical scrollbar should have overlay style. 1304 */ 1305 public void setVerticalScrollbarOverlay(boolean overlay) { 1306 mOverlayVerticalScrollbar = overlay; 1307 } 1308 1309 /** 1310 * Return whether horizontal scrollbar has overlay style 1311 * @return TRUE if horizontal scrollbar has overlay style. 1312 */ 1313 public boolean overlayHorizontalScrollbar() { 1314 return mOverlayHorizontalScrollbar; 1315 } 1316 1317 /** 1318 * Return whether vertical scrollbar has overlay style 1319 * @return TRUE if vertical scrollbar has overlay style. 1320 */ 1321 public boolean overlayVerticalScrollbar() { 1322 return mOverlayVerticalScrollbar; 1323 } 1324 1325 /* 1326 * Return the width of the view where the content of WebView should render 1327 * to. 1328 * Note: this can be called from WebCoreThread. 1329 */ 1330 /* package */ int getViewWidth() { 1331 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1332 return getWidth(); 1333 } else { 1334 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1335 } 1336 } 1337 1338 /* 1339 * returns the height of the titlebarview (if any). Does not care about 1340 * scrolling 1341 */ 1342 int getTitleHeight() { 1343 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1344 } 1345 1346 /* 1347 * Return the amount of the titlebarview (if any) that is visible 1348 * 1349 * @hide 1350 */ 1351 public int getVisibleTitleHeight() { 1352 // need to restrict mScrollY due to over scroll 1353 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1354 } 1355 1356 /* 1357 * Return the height of the view where the content of WebView should render 1358 * to. Note that this excludes mTitleBar, if there is one. 1359 * Note: this can be called from WebCoreThread. 1360 */ 1361 /* package */ int getViewHeight() { 1362 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1363 } 1364 1365 private int getViewHeightWithTitle() { 1366 int height = getHeight(); 1367 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1368 height -= getHorizontalScrollbarHeight(); 1369 } 1370 return height; 1371 } 1372 1373 /** 1374 * @return The SSL certificate for the main top-level page or null if 1375 * there is no certificate (the site is not secure). 1376 */ 1377 public SslCertificate getCertificate() { 1378 return mCertificate; 1379 } 1380 1381 /** 1382 * Sets the SSL certificate for the main top-level page. 1383 */ 1384 public void setCertificate(SslCertificate certificate) { 1385 if (DebugFlags.WEB_VIEW) { 1386 Log.v(LOGTAG, "setCertificate=" + certificate); 1387 } 1388 // here, the certificate can be null (if the site is not secure) 1389 mCertificate = certificate; 1390 } 1391 1392 //------------------------------------------------------------------------- 1393 // Methods called by activity 1394 //------------------------------------------------------------------------- 1395 1396 /** 1397 * Save the username and password for a particular host in the WebView's 1398 * internal database. 1399 * @param host The host that required the credentials. 1400 * @param username The username for the given host. 1401 * @param password The password for the given host. 1402 */ 1403 public void savePassword(String host, String username, String password) { 1404 mDatabase.setUsernamePassword(host, username, password); 1405 } 1406 1407 /** 1408 * Set the HTTP authentication credentials for a given host and realm. 1409 * 1410 * @param host The host for the credentials. 1411 * @param realm The realm for the credentials. 1412 * @param username The username for the password. If it is null, it means 1413 * password can't be saved. 1414 * @param password The password 1415 */ 1416 public void setHttpAuthUsernamePassword(String host, String realm, 1417 String username, String password) { 1418 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1419 } 1420 1421 /** 1422 * Retrieve the HTTP authentication username and password for a given 1423 * host & realm pair 1424 * 1425 * @param host The host for which the credentials apply. 1426 * @param realm The realm for which the credentials apply. 1427 * @return String[] if found, String[0] is username, which can be null and 1428 * String[1] is password. Return null if it can't find anything. 1429 */ 1430 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1431 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1432 } 1433 1434 /** 1435 * Remove Find or Select ActionModes, if active. 1436 */ 1437 private void clearActionModes() { 1438 if (mSelectCallback != null) { 1439 mSelectCallback.finish(); 1440 } 1441 if (mFindCallback != null) { 1442 mFindCallback.finish(); 1443 } 1444 } 1445 1446 /** 1447 * Called to clear state when moving from one page to another, or changing 1448 * in some other way that makes elements associated with the current page 1449 * (such as WebTextView or ActionModes) no longer relevant. 1450 */ 1451 private void clearHelpers() { 1452 clearTextEntry(); 1453 clearActionModes(); 1454 dismissFullScreenMode(); 1455 } 1456 1457 /** 1458 * Destroy the internal state of the WebView. This method should be called 1459 * after the WebView has been removed from the view system. No other 1460 * methods may be called on a WebView after destroy. 1461 */ 1462 public void destroy() { 1463 clearHelpers(); 1464 if (mListBoxDialog != null) { 1465 mListBoxDialog.dismiss(); 1466 mListBoxDialog = null; 1467 } 1468 if (mNativeClass != 0) nativeStopGL(); 1469 if (mWebViewCore != null) { 1470 // Set the handlers to null before destroying WebViewCore so no 1471 // more messages will be posted. 1472 mCallbackProxy.setWebViewClient(null); 1473 mCallbackProxy.setWebChromeClient(null); 1474 // Tell WebViewCore to destroy itself 1475 synchronized (this) { 1476 WebViewCore webViewCore = mWebViewCore; 1477 mWebViewCore = null; // prevent using partial webViewCore 1478 webViewCore.destroy(); 1479 } 1480 // Remove any pending messages that might not be serviced yet. 1481 mPrivateHandler.removeCallbacksAndMessages(null); 1482 mCallbackProxy.removeCallbacksAndMessages(null); 1483 // Wake up the WebCore thread just in case it is waiting for a 1484 // JavaScript dialog. 1485 synchronized (mCallbackProxy) { 1486 mCallbackProxy.notify(); 1487 } 1488 } 1489 if (mNativeClass != 0) { 1490 nativeDestroy(); 1491 mNativeClass = 0; 1492 } 1493 } 1494 1495 /** 1496 * Enables platform notifications of data state and proxy changes. 1497 */ 1498 public static void enablePlatformNotifications() { 1499 Network.enablePlatformNotifications(); 1500 } 1501 1502 /** 1503 * If platform notifications are enabled, this should be called 1504 * from the Activity's onPause() or onStop(). 1505 */ 1506 public static void disablePlatformNotifications() { 1507 Network.disablePlatformNotifications(); 1508 } 1509 1510 /** 1511 * Sets JavaScript engine flags. 1512 * 1513 * @param flags JS engine flags in a String 1514 * 1515 * @hide pending API solidification 1516 */ 1517 public void setJsFlags(String flags) { 1518 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1519 } 1520 1521 /** 1522 * Inform WebView of the network state. This is used to set 1523 * the JavaScript property window.navigator.isOnline and 1524 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1525 * @param networkUp boolean indicating if network is available 1526 */ 1527 public void setNetworkAvailable(boolean networkUp) { 1528 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1529 networkUp ? 1 : 0, 0); 1530 } 1531 1532 /** 1533 * Inform WebView about the current network type. 1534 * {@hide} 1535 */ 1536 public void setNetworkType(String type, String subtype) { 1537 Map<String, String> map = new HashMap<String, String>(); 1538 map.put("type", type); 1539 map.put("subtype", subtype); 1540 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1541 } 1542 /** 1543 * Save the state of this WebView used in 1544 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1545 * method no longer stores the display data for this WebView. The previous 1546 * behavior could potentially leak files if {@link #restoreState} was never 1547 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1548 * and restoring the display data. 1549 * @param outState The Bundle to store the WebView state. 1550 * @return The same copy of the back/forward list used to save the state. If 1551 * saveState fails, the returned list will be null. 1552 * @see #savePicture 1553 * @see #restorePicture 1554 */ 1555 public WebBackForwardList saveState(Bundle outState) { 1556 if (outState == null) { 1557 return null; 1558 } 1559 // We grab a copy of the back/forward list because a client of WebView 1560 // may have invalidated the history list by calling clearHistory. 1561 WebBackForwardList list = copyBackForwardList(); 1562 final int currentIndex = list.getCurrentIndex(); 1563 final int size = list.getSize(); 1564 // We should fail saving the state if the list is empty or the index is 1565 // not in a valid range. 1566 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1567 return null; 1568 } 1569 outState.putInt("index", currentIndex); 1570 // FIXME: This should just be a byte[][] instead of ArrayList but 1571 // Parcel.java does not have the code to handle multi-dimensional 1572 // arrays. 1573 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1574 for (int i = 0; i < size; i++) { 1575 WebHistoryItem item = list.getItemAtIndex(i); 1576 if (null == item) { 1577 // FIXME: this shouldn't happen 1578 // need to determine how item got set to null 1579 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1580 return null; 1581 } 1582 byte[] data = item.getFlattenedData(); 1583 if (data == null) { 1584 // It would be very odd to not have any data for a given history 1585 // item. And we will fail to rebuild the history list without 1586 // flattened data. 1587 return null; 1588 } 1589 history.add(data); 1590 } 1591 outState.putSerializable("history", history); 1592 if (mCertificate != null) { 1593 outState.putBundle("certificate", 1594 SslCertificate.saveState(mCertificate)); 1595 } 1596 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1597 mZoomManager.saveZoomState(outState); 1598 return list; 1599 } 1600 1601 /** 1602 * Save the current display data to the Bundle given. Used in conjunction 1603 * with {@link #saveState}. 1604 * @param b A Bundle to store the display data. 1605 * @param dest The file to store the serialized picture data. Will be 1606 * overwritten with this WebView's picture data. 1607 * @return True if the picture was successfully saved. 1608 */ 1609 public boolean savePicture(Bundle b, final File dest) { 1610 if (dest == null || b == null) { 1611 return false; 1612 } 1613 final Picture p = capturePicture(); 1614 // Use a temporary file while writing to ensure the destination file 1615 // contains valid data. 1616 final File temp = new File(dest.getPath() + ".writing"); 1617 new Thread(new Runnable() { 1618 public void run() { 1619 FileOutputStream out = null; 1620 try { 1621 out = new FileOutputStream(temp); 1622 p.writeToStream(out); 1623 // Writing the picture succeeded, rename the temporary file 1624 // to the destination. 1625 temp.renameTo(dest); 1626 } catch (Exception e) { 1627 // too late to do anything about it. 1628 } finally { 1629 if (out != null) { 1630 try { 1631 out.close(); 1632 } catch (Exception e) { 1633 // Can't do anything about that 1634 } 1635 } 1636 temp.delete(); 1637 } 1638 } 1639 }).start(); 1640 // now update the bundle 1641 b.putInt("scrollX", mScrollX); 1642 b.putInt("scrollY", mScrollY); 1643 mZoomManager.saveZoomState(b); 1644 return true; 1645 } 1646 1647 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1648 int sx = b.getInt("scrollX", 0); 1649 int sy = b.getInt("scrollY", 0); 1650 1651 mDrawHistory = true; 1652 mHistoryPicture = p; 1653 mScrollX = sx; 1654 mScrollY = sy; 1655 mZoomManager.restoreZoomState(b); 1656 final float scale = mZoomManager.getScale(); 1657 mHistoryWidth = Math.round(p.getWidth() * scale); 1658 mHistoryHeight = Math.round(p.getHeight() * scale); 1659 1660 invalidate(); 1661 } 1662 1663 /** 1664 * Restore the display data that was save in {@link #savePicture}. Used in 1665 * conjunction with {@link #restoreState}. 1666 * @param b A Bundle containing the saved display data. 1667 * @param src The file where the picture data was stored. 1668 * @return True if the picture was successfully restored. 1669 */ 1670 public boolean restorePicture(Bundle b, File src) { 1671 if (src == null || b == null) { 1672 return false; 1673 } 1674 if (!src.exists()) { 1675 return false; 1676 } 1677 try { 1678 final FileInputStream in = new FileInputStream(src); 1679 final Bundle copy = new Bundle(b); 1680 new Thread(new Runnable() { 1681 public void run() { 1682 try { 1683 final Picture p = Picture.createFromStream(in); 1684 if (p != null) { 1685 // Post a runnable on the main thread to update the 1686 // history picture fields. 1687 mPrivateHandler.post(new Runnable() { 1688 public void run() { 1689 restoreHistoryPictureFields(p, copy); 1690 } 1691 }); 1692 } 1693 } finally { 1694 try { 1695 in.close(); 1696 } catch (Exception e) { 1697 // Nothing we can do now. 1698 } 1699 } 1700 } 1701 }).start(); 1702 } catch (FileNotFoundException e){ 1703 e.printStackTrace(); 1704 } 1705 return true; 1706 } 1707 1708 /** 1709 * Restore the state of this WebView from the given map used in 1710 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1711 * be called to restore the state of the WebView before using the object. If 1712 * it is called after the WebView has had a chance to build state (load 1713 * pages, create a back/forward list, etc.) there may be undesirable 1714 * side-effects. Please note that this method no longer restores the 1715 * display data for this WebView. See {@link #savePicture} and {@link 1716 * #restorePicture} for saving and restoring the display data. 1717 * @param inState The incoming Bundle of state. 1718 * @return The restored back/forward list or null if restoreState failed. 1719 * @see #savePicture 1720 * @see #restorePicture 1721 */ 1722 public WebBackForwardList restoreState(Bundle inState) { 1723 WebBackForwardList returnList = null; 1724 if (inState == null) { 1725 return returnList; 1726 } 1727 if (inState.containsKey("index") && inState.containsKey("history")) { 1728 mCertificate = SslCertificate.restoreState( 1729 inState.getBundle("certificate")); 1730 1731 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1732 final int index = inState.getInt("index"); 1733 // We can't use a clone of the list because we need to modify the 1734 // shared copy, so synchronize instead to prevent concurrent 1735 // modifications. 1736 synchronized (list) { 1737 final List<byte[]> history = 1738 (List<byte[]>) inState.getSerializable("history"); 1739 final int size = history.size(); 1740 // Check the index bounds so we don't crash in native code while 1741 // restoring the history index. 1742 if (index < 0 || index >= size) { 1743 return null; 1744 } 1745 for (int i = 0; i < size; i++) { 1746 byte[] data = history.remove(0); 1747 if (data == null) { 1748 // If we somehow have null data, we cannot reconstruct 1749 // the item and thus our history list cannot be rebuilt. 1750 return null; 1751 } 1752 WebHistoryItem item = new WebHistoryItem(data); 1753 list.addHistoryItem(item); 1754 } 1755 // Grab the most recent copy to return to the caller. 1756 returnList = copyBackForwardList(); 1757 // Update the copy to have the correct index. 1758 returnList.setCurrentIndex(index); 1759 } 1760 // Restore private browsing setting. 1761 if (inState.getBoolean("privateBrowsingEnabled")) { 1762 getSettings().setPrivateBrowsingEnabled(true); 1763 } 1764 mZoomManager.restoreZoomState(inState); 1765 // Remove all pending messages because we are restoring previous 1766 // state. 1767 mWebViewCore.removeMessages(); 1768 // Send a restore state message. 1769 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1770 } 1771 return returnList; 1772 } 1773 1774 /** 1775 * Load the given url with the extra headers. 1776 * @param url The url of the resource to load. 1777 * @param extraHeaders The extra headers sent with this url. This should not 1778 * include the common headers like "user-agent". If it does, it 1779 * will be replaced by the intrinsic value of the WebView. 1780 */ 1781 public void loadUrl(String url, Map<String, String> extraHeaders) { 1782 switchOutDrawHistory(); 1783 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1784 arg.mUrl = url; 1785 arg.mExtraHeaders = extraHeaders; 1786 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1787 clearHelpers(); 1788 } 1789 1790 /** 1791 * Load the given url. 1792 * @param url The url of the resource to load. 1793 */ 1794 public void loadUrl(String url) { 1795 if (url == null) { 1796 return; 1797 } 1798 loadUrl(url, null); 1799 } 1800 1801 /** 1802 * Load the url with postData using "POST" method into the WebView. If url 1803 * is not a network url, it will be loaded with {link 1804 * {@link #loadUrl(String)} instead. 1805 * 1806 * @param url The url of the resource to load. 1807 * @param postData The data will be passed to "POST" request. 1808 */ 1809 public void postUrl(String url, byte[] postData) { 1810 if (URLUtil.isNetworkUrl(url)) { 1811 switchOutDrawHistory(); 1812 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1813 arg.mUrl = url; 1814 arg.mPostData = postData; 1815 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1816 clearHelpers(); 1817 } else { 1818 loadUrl(url); 1819 } 1820 } 1821 1822 /** 1823 * Load the given data into the WebView. This will load the data into 1824 * WebView using the data: scheme. Content loaded through this mechanism 1825 * does not have the ability to load content from the network. 1826 * @param data A String of data in the given encoding. The date must 1827 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1828 * %27, %3f respectively. 1829 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1830 * @param encoding The encoding of the data. i.e. utf-8, base64 1831 */ 1832 public void loadData(String data, String mimeType, String encoding) { 1833 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1834 } 1835 1836 /** 1837 * Load the given data into the WebView, use the provided URL as the base 1838 * URL for the content. The base URL is the URL that represents the page 1839 * that is loaded through this interface. As such, it is used to resolve any 1840 * relative URLs. The historyUrl is used for the history entry. 1841 * <p> 1842 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1843 * files through "file:///android_asset/" for the sub resources is more 1844 * restricted. If you provide null or empty string as baseUrl, you won't be 1845 * able to access asset files. If the baseUrl is anything other than 1846 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1847 * sub resources. 1848 * 1849 * @param baseUrl Url to resolve relative paths with, if null defaults to 1850 * "about:blank" 1851 * @param data A String of data in the given encoding. 1852 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1853 * defaults to "text/html" 1854 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1855 * @param historyUrl URL to use as the history entry. Can be null. 1856 */ 1857 public void loadDataWithBaseURL(String baseUrl, String data, 1858 String mimeType, String encoding, String historyUrl) { 1859 1860 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1861 loadData(data, mimeType, encoding); 1862 return; 1863 } 1864 switchOutDrawHistory(); 1865 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1866 arg.mBaseUrl = baseUrl; 1867 arg.mData = data; 1868 arg.mMimeType = mimeType; 1869 arg.mEncoding = encoding; 1870 arg.mHistoryUrl = historyUrl; 1871 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1872 clearHelpers(); 1873 } 1874 1875 /** 1876 * Saves the current view as a web archive. 1877 * 1878 * @param filename The filename where the archive should be placed. 1879 */ 1880 public void saveWebArchive(String filename) { 1881 saveWebArchive(filename, false, null); 1882 } 1883 1884 /* package */ static class SaveWebArchiveMessage { 1885 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1886 mBasename = basename; 1887 mAutoname = autoname; 1888 mCallback = callback; 1889 } 1890 1891 /* package */ final String mBasename; 1892 /* package */ final boolean mAutoname; 1893 /* package */ final ValueCallback<String> mCallback; 1894 /* package */ String mResultFile; 1895 } 1896 1897 /** 1898 * Saves the current view as a web archive. 1899 * 1900 * @param basename The filename where the archive should be placed. 1901 * @param autoname If false, takes basename to be a file. If true, basename 1902 * is assumed to be a directory in which a filename will be 1903 * chosen according to the url of the current page. 1904 * @param callback Called after the web archive has been saved. The 1905 * parameter for onReceiveValue will either be the filename 1906 * under which the file was saved, or null if saving the 1907 * file failed. 1908 */ 1909 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1910 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1911 new SaveWebArchiveMessage(basename, autoname, callback)); 1912 } 1913 1914 /** 1915 * Stop the current load. 1916 */ 1917 public void stopLoading() { 1918 // TODO: should we clear all the messages in the queue before sending 1919 // STOP_LOADING? 1920 switchOutDrawHistory(); 1921 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1922 } 1923 1924 /** 1925 * Reload the current url. 1926 */ 1927 public void reload() { 1928 clearHelpers(); 1929 switchOutDrawHistory(); 1930 mWebViewCore.sendMessage(EventHub.RELOAD); 1931 } 1932 1933 /** 1934 * Return true if this WebView has a back history item. 1935 * @return True iff this WebView has a back history item. 1936 */ 1937 public boolean canGoBack() { 1938 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1939 synchronized (l) { 1940 if (l.getClearPending()) { 1941 return false; 1942 } else { 1943 return l.getCurrentIndex() > 0; 1944 } 1945 } 1946 } 1947 1948 /** 1949 * Go back in the history of this WebView. 1950 */ 1951 public void goBack() { 1952 goBackOrForward(-1); 1953 } 1954 1955 /** 1956 * Return true if this WebView has a forward history item. 1957 * @return True iff this Webview has a forward history item. 1958 */ 1959 public boolean canGoForward() { 1960 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1961 synchronized (l) { 1962 if (l.getClearPending()) { 1963 return false; 1964 } else { 1965 return l.getCurrentIndex() < l.getSize() - 1; 1966 } 1967 } 1968 } 1969 1970 /** 1971 * Go forward in the history of this WebView. 1972 */ 1973 public void goForward() { 1974 goBackOrForward(1); 1975 } 1976 1977 /** 1978 * Return true if the page can go back or forward the given 1979 * number of steps. 1980 * @param steps The negative or positive number of steps to move the 1981 * history. 1982 */ 1983 public boolean canGoBackOrForward(int steps) { 1984 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1985 synchronized (l) { 1986 if (l.getClearPending()) { 1987 return false; 1988 } else { 1989 int newIndex = l.getCurrentIndex() + steps; 1990 return newIndex >= 0 && newIndex < l.getSize(); 1991 } 1992 } 1993 } 1994 1995 /** 1996 * Go to the history item that is the number of steps away from 1997 * the current item. Steps is negative if backward and positive 1998 * if forward. 1999 * @param steps The number of steps to take back or forward in the back 2000 * forward list. 2001 */ 2002 public void goBackOrForward(int steps) { 2003 goBackOrForward(steps, false); 2004 } 2005 2006 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2007 if (steps != 0) { 2008 clearHelpers(); 2009 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2010 ignoreSnapshot ? 1 : 0); 2011 } 2012 } 2013 2014 /** 2015 * Returns true if private browsing is enabled in this WebView. 2016 */ 2017 public boolean isPrivateBrowsingEnabled() { 2018 return getSettings().isPrivateBrowsingEnabled(); 2019 } 2020 2021 private void startPrivateBrowsing() { 2022 getSettings().setPrivateBrowsingEnabled(true); 2023 } 2024 2025 private boolean extendScroll(int y) { 2026 int finalY = mScroller.getFinalY(); 2027 int newY = pinLocY(finalY + y); 2028 if (newY == finalY) return false; 2029 mScroller.setFinalY(newY); 2030 mScroller.extendDuration(computeDuration(0, y)); 2031 return true; 2032 } 2033 2034 /** 2035 * Scroll the contents of the view up by half the view size 2036 * @param top true to jump to the top of the page 2037 * @return true if the page was scrolled 2038 */ 2039 public boolean pageUp(boolean top) { 2040 if (mNativeClass == 0) { 2041 return false; 2042 } 2043 nativeClearCursor(); // start next trackball movement from page edge 2044 if (top) { 2045 // go to the top of the document 2046 return pinScrollTo(mScrollX, 0, true, 0); 2047 } 2048 // Page up 2049 int h = getHeight(); 2050 int y; 2051 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2052 y = -h + PAGE_SCROLL_OVERLAP; 2053 } else { 2054 y = -h / 2; 2055 } 2056 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2057 : extendScroll(y); 2058 } 2059 2060 /** 2061 * Scroll the contents of the view down by half the page size 2062 * @param bottom true to jump to bottom of page 2063 * @return true if the page was scrolled 2064 */ 2065 public boolean pageDown(boolean bottom) { 2066 if (mNativeClass == 0) { 2067 return false; 2068 } 2069 nativeClearCursor(); // start next trackball movement from page edge 2070 if (bottom) { 2071 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2072 } 2073 // Page down. 2074 int h = getHeight(); 2075 int y; 2076 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2077 y = h - PAGE_SCROLL_OVERLAP; 2078 } else { 2079 y = h / 2; 2080 } 2081 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2082 : extendScroll(y); 2083 } 2084 2085 /** 2086 * Clear the view so that onDraw() will draw nothing but white background, 2087 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2088 */ 2089 public void clearView() { 2090 mContentWidth = 0; 2091 mContentHeight = 0; 2092 setBaseLayer(0, null); 2093 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2094 } 2095 2096 /** 2097 * Return a new picture that captures the current display of the webview. 2098 * This is a copy of the display, and will be unaffected if the webview 2099 * later loads a different URL. 2100 * 2101 * @return a picture containing the current contents of the view. Note this 2102 * picture is of the entire document, and is not restricted to the 2103 * bounds of the view. 2104 */ 2105 public Picture capturePicture() { 2106 if (mNativeClass == 0) return null; 2107 Picture result = new Picture(); 2108 nativeCopyBaseContentToPicture(result); 2109 return result; 2110 } 2111 2112 /** 2113 * Return true if the browser is displaying a TextView for text input. 2114 */ 2115 private boolean inEditingMode() { 2116 return mWebTextView != null && mWebTextView.getParent() != null; 2117 } 2118 2119 /** 2120 * Remove the WebTextView. 2121 */ 2122 private void clearTextEntry() { 2123 if (inEditingMode()) { 2124 mWebTextView.remove(); 2125 } else { 2126 // The keyboard may be open with the WebView as the served view 2127 hideSoftKeyboard(); 2128 } 2129 } 2130 2131 /** 2132 * Return the current scale of the WebView 2133 * @return The current scale. 2134 */ 2135 public float getScale() { 2136 return mZoomManager.getScale(); 2137 } 2138 2139 /** 2140 * Set the initial scale for the WebView. 0 means default. If 2141 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2142 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2143 * WebView starts will this value as initial scale. 2144 * 2145 * @param scaleInPercent The initial scale in percent. 2146 */ 2147 public void setInitialScale(int scaleInPercent) { 2148 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2149 } 2150 2151 /** 2152 * Invoke the graphical zoom picker widget for this WebView. This will 2153 * result in the zoom widget appearing on the screen to control the zoom 2154 * level of this WebView. 2155 */ 2156 public void invokeZoomPicker() { 2157 if (!getSettings().supportZoom()) { 2158 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2159 return; 2160 } 2161 clearHelpers(); 2162 mZoomManager.invokeZoomPicker(); 2163 } 2164 2165 /** 2166 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2167 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2168 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2169 * anchor does not have a url or if it is a JavaScript url, the type will 2170 * be UNKNOWN_TYPE and the url has to be retrieved through 2171 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2172 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2173 * the "extra" field. A type of 2174 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2175 * a child node. If a phone number is found, the HitTestResult type is set 2176 * to PHONE_TYPE and the phone number is set in the "extra" field of 2177 * HitTestResult. If a map address is found, the HitTestResult type is set 2178 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2179 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2180 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2181 * HitTestResult type is set to UNKNOWN_TYPE. 2182 */ 2183 public HitTestResult getHitTestResult() { 2184 return hitTestResult(mInitialHitTestResult); 2185 } 2186 2187 private HitTestResult hitTestResult(HitTestResult fallback) { 2188 if (mNativeClass == 0) { 2189 return null; 2190 } 2191 2192 HitTestResult result = new HitTestResult(); 2193 if (nativeHasCursorNode()) { 2194 if (nativeCursorIsTextInput()) { 2195 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2196 } else { 2197 String text = nativeCursorText(); 2198 if (text != null) { 2199 if (text.startsWith(SCHEME_TEL)) { 2200 result.setType(HitTestResult.PHONE_TYPE); 2201 result.setExtra(text.substring(SCHEME_TEL.length())); 2202 } else if (text.startsWith(SCHEME_MAILTO)) { 2203 result.setType(HitTestResult.EMAIL_TYPE); 2204 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2205 } else if (text.startsWith(SCHEME_GEO)) { 2206 result.setType(HitTestResult.GEO_TYPE); 2207 result.setExtra(URLDecoder.decode(text 2208 .substring(SCHEME_GEO.length()))); 2209 } else if (nativeCursorIsAnchor()) { 2210 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2211 result.setExtra(text); 2212 } 2213 } 2214 } 2215 } else if (fallback != null) { 2216 /* If webkit causes a rebuild while the long press is in progress, 2217 * the cursor node may be reset, even if it is still around. This 2218 * uses the cursor node saved when the touch began. Since the 2219 * nativeImageURI below only changes the result if it is successful, 2220 * this uses the data beneath the touch if available or the original 2221 * tap data otherwise. 2222 */ 2223 Log.v(LOGTAG, "hitTestResult use fallback"); 2224 result = fallback; 2225 } 2226 int type = result.getType(); 2227 if (type == HitTestResult.UNKNOWN_TYPE 2228 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2229 // Now check to see if it is an image. 2230 int contentX = viewToContentX(mLastTouchX + mScrollX); 2231 int contentY = viewToContentY(mLastTouchY + mScrollY); 2232 String text = nativeImageURI(contentX, contentY); 2233 if (text != null) { 2234 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2235 HitTestResult.IMAGE_TYPE : 2236 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2237 result.setExtra(text); 2238 } 2239 } 2240 return result; 2241 } 2242 2243 // Called by JNI when the DOM has changed the focus. Clear the focus so 2244 // that new keys will go to the newly focused field 2245 private void domChangedFocus() { 2246 if (inEditingMode()) { 2247 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2248 } 2249 } 2250 /** 2251 * Request the anchor or image element URL at the last tapped point. 2252 * If hrefMsg is null, this method returns immediately and does not 2253 * dispatch hrefMsg to its target. If the tapped point hits an image, 2254 * an anchor, or an image in an anchor, the message associates 2255 * strings in named keys in its data. The value paired with the key 2256 * may be an empty string. 2257 * 2258 * @param hrefMsg This message will be dispatched with the result of the 2259 * request. The message data contains three keys: 2260 * - "url" returns the anchor's href attribute. 2261 * - "title" returns the anchor's text. 2262 * - "src" returns the image's src attribute. 2263 */ 2264 public void requestFocusNodeHref(Message hrefMsg) { 2265 if (hrefMsg == null) { 2266 return; 2267 } 2268 int contentX = viewToContentX(mLastTouchX + mScrollX); 2269 int contentY = viewToContentY(mLastTouchY + mScrollY); 2270 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2271 contentX, contentY, hrefMsg); 2272 } 2273 2274 /** 2275 * Request the url of the image last touched by the user. msg will be sent 2276 * to its target with a String representing the url as its object. 2277 * 2278 * @param msg This message will be dispatched with the result of the request 2279 * as the data member with "url" as key. The result can be null. 2280 */ 2281 public void requestImageRef(Message msg) { 2282 if (0 == mNativeClass) return; // client isn't initialized 2283 int contentX = viewToContentX(mLastTouchX + mScrollX); 2284 int contentY = viewToContentY(mLastTouchY + mScrollY); 2285 String ref = nativeImageURI(contentX, contentY); 2286 Bundle data = msg.getData(); 2287 data.putString("url", ref); 2288 msg.setData(data); 2289 msg.sendToTarget(); 2290 } 2291 2292 static int pinLoc(int x, int viewMax, int docMax) { 2293// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2294 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2295 // pin the short document to the top/left of the screen 2296 x = 0; 2297// Log.d(LOGTAG, "--- center " + x); 2298 } else if (x < 0) { 2299 x = 0; 2300// Log.d(LOGTAG, "--- zero"); 2301 } else if (x + viewMax > docMax) { 2302 x = docMax - viewMax; 2303// Log.d(LOGTAG, "--- pin " + x); 2304 } 2305 return x; 2306 } 2307 2308 // Expects x in view coordinates 2309 int pinLocX(int x) { 2310 if (mInOverScrollMode) return x; 2311 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2312 } 2313 2314 // Expects y in view coordinates 2315 int pinLocY(int y) { 2316 if (mInOverScrollMode) return y; 2317 return pinLoc(y, getViewHeightWithTitle(), 2318 computeRealVerticalScrollRange() + getTitleHeight()); 2319 } 2320 2321 /** 2322 * A title bar which is embedded in this WebView, and scrolls along with it 2323 * vertically, but not horizontally. 2324 */ 2325 private View mTitleBar; 2326 2327 /** 2328 * Add or remove a title bar to be embedded into the WebView, and scroll 2329 * along with it vertically, while remaining in view horizontally. Pass 2330 * null to remove the title bar from the WebView, and return to drawing 2331 * the WebView normally without translating to account for the title bar. 2332 * @hide 2333 */ 2334 public void setEmbeddedTitleBar(View v) { 2335 if (mTitleBar == v) return; 2336 if (mTitleBar != null) { 2337 removeView(mTitleBar); 2338 } 2339 if (null != v) { 2340 addView(v, new AbsoluteLayout.LayoutParams( 2341 ViewGroup.LayoutParams.MATCH_PARENT, 2342 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2343 } 2344 mTitleBar = v; 2345 } 2346 2347 /** 2348 * Given a distance in view space, convert it to content space. Note: this 2349 * does not reflect translation, just scaling, so this should not be called 2350 * with coordinates, but should be called for dimensions like width or 2351 * height. 2352 */ 2353 private int viewToContentDimension(int d) { 2354 return Math.round(d * mZoomManager.getInvScale()); 2355 } 2356 2357 /** 2358 * Given an x coordinate in view space, convert it to content space. Also 2359 * may be used for absolute heights (such as for the WebTextView's 2360 * textSize, which is unaffected by the height of the title bar). 2361 */ 2362 /*package*/ int viewToContentX(int x) { 2363 return viewToContentDimension(x); 2364 } 2365 2366 /** 2367 * Given a y coordinate in view space, convert it to content space. 2368 * Takes into account the height of the title bar if there is one 2369 * embedded into the WebView. 2370 */ 2371 /*package*/ int viewToContentY(int y) { 2372 return viewToContentDimension(y - getTitleHeight()); 2373 } 2374 2375 /** 2376 * Given a x coordinate in view space, convert it to content space. 2377 * Returns the result as a float. 2378 */ 2379 private float viewToContentXf(int x) { 2380 return x * mZoomManager.getInvScale(); 2381 } 2382 2383 /** 2384 * Given a y coordinate in view space, convert it to content space. 2385 * Takes into account the height of the title bar if there is one 2386 * embedded into the WebView. Returns the result as a float. 2387 */ 2388 private float viewToContentYf(int y) { 2389 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2390 } 2391 2392 /** 2393 * Given a distance in content space, convert it to view space. Note: this 2394 * does not reflect translation, just scaling, so this should not be called 2395 * with coordinates, but should be called for dimensions like width or 2396 * height. 2397 */ 2398 /*package*/ int contentToViewDimension(int d) { 2399 return Math.round(d * mZoomManager.getScale()); 2400 } 2401 2402 /** 2403 * Given an x coordinate in content space, convert it to view 2404 * space. 2405 */ 2406 /*package*/ int contentToViewX(int x) { 2407 return contentToViewDimension(x); 2408 } 2409 2410 /** 2411 * Given a y coordinate in content space, convert it to view 2412 * space. Takes into account the height of the title bar. 2413 */ 2414 /*package*/ int contentToViewY(int y) { 2415 return contentToViewDimension(y) + getTitleHeight(); 2416 } 2417 2418 private Rect contentToViewRect(Rect x) { 2419 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2420 contentToViewX(x.right), contentToViewY(x.bottom)); 2421 } 2422 2423 /* To invalidate a rectangle in content coordinates, we need to transform 2424 the rect into view coordinates, so we can then call invalidate(...). 2425 2426 Normally, we would just call contentToView[XY](...), which eventually 2427 calls Math.round(coordinate * mActualScale). However, for invalidates, 2428 we need to account for the slop that occurs with antialiasing. To 2429 address that, we are a little more liberal in the size of the rect that 2430 we invalidate. 2431 2432 This liberal calculation calls floor() for the top/left, and ceil() for 2433 the bottom/right coordinates. This catches the possible extra pixels of 2434 antialiasing that we might have missed with just round(). 2435 */ 2436 2437 // Called by JNI to invalidate the View, given rectangle coordinates in 2438 // content space 2439 private void viewInvalidate(int l, int t, int r, int b) { 2440 final float scale = mZoomManager.getScale(); 2441 final int dy = getTitleHeight(); 2442 invalidate((int)Math.floor(l * scale), 2443 (int)Math.floor(t * scale) + dy, 2444 (int)Math.ceil(r * scale), 2445 (int)Math.ceil(b * scale) + dy); 2446 } 2447 2448 // Called by JNI to invalidate the View after a delay, given rectangle 2449 // coordinates in content space 2450 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2451 final float scale = mZoomManager.getScale(); 2452 final int dy = getTitleHeight(); 2453 postInvalidateDelayed(delay, 2454 (int)Math.floor(l * scale), 2455 (int)Math.floor(t * scale) + dy, 2456 (int)Math.ceil(r * scale), 2457 (int)Math.ceil(b * scale) + dy); 2458 } 2459 2460 private void invalidateContentRect(Rect r) { 2461 viewInvalidate(r.left, r.top, r.right, r.bottom); 2462 } 2463 2464 // stop the scroll animation, and don't let a subsequent fling add 2465 // to the existing velocity 2466 private void abortAnimation() { 2467 mScroller.abortAnimation(); 2468 mLastVelocity = 0; 2469 } 2470 2471 /* call from webcoreview.draw(), so we're still executing in the UI thread 2472 */ 2473 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2474 2475 // premature data from webkit, ignore 2476 if ((w | h) == 0) { 2477 return; 2478 } 2479 2480 // don't abort a scroll animation if we didn't change anything 2481 if (mContentWidth != w || mContentHeight != h) { 2482 // record new dimensions 2483 mContentWidth = w; 2484 mContentHeight = h; 2485 // If history Picture is drawn, don't update scroll. They will be 2486 // updated when we get out of that mode. 2487 if (!mDrawHistory) { 2488 // repin our scroll, taking into account the new content size 2489 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2490 if (!mScroller.isFinished()) { 2491 // We are in the middle of a scroll. Repin the final scroll 2492 // position. 2493 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2494 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2495 } 2496 } 2497 } 2498 contentSizeChanged(updateLayout); 2499 } 2500 2501 // Used to avoid sending many visible rect messages. 2502 private Rect mLastVisibleRectSent; 2503 private Rect mLastGlobalRect; 2504 2505 Rect sendOurVisibleRect() { 2506 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2507 Rect rect = new Rect(); 2508 calcOurContentVisibleRect(rect); 2509 // Rect.equals() checks for null input. 2510 if (!rect.equals(mLastVisibleRectSent)) { 2511 Point pos = new Point(rect.left, rect.top); 2512 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2513 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2514 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, pos); 2515 mLastVisibleRectSent = rect; 2516 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2517 } 2518 Rect globalRect = new Rect(); 2519 if (getGlobalVisibleRect(globalRect) 2520 && !globalRect.equals(mLastGlobalRect)) { 2521 if (DebugFlags.WEB_VIEW) { 2522 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2523 + globalRect.top + ",r=" + globalRect.right + ",b=" 2524 + globalRect.bottom); 2525 } 2526 // TODO: the global offset is only used by windowRect() 2527 // in ChromeClientAndroid ; other clients such as touch 2528 // and mouse events could return view + screen relative points. 2529 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2530 mLastGlobalRect = globalRect; 2531 } 2532 return rect; 2533 } 2534 2535 // Sets r to be the visible rectangle of our webview in view coordinates 2536 private void calcOurVisibleRect(Rect r) { 2537 Point p = new Point(); 2538 getGlobalVisibleRect(r, p); 2539 r.offset(-p.x, -p.y); 2540 } 2541 2542 // Sets r to be our visible rectangle in content coordinates 2543 private void calcOurContentVisibleRect(Rect r) { 2544 calcOurVisibleRect(r); 2545 r.left = viewToContentX(r.left); 2546 // viewToContentY will remove the total height of the title bar. Add 2547 // the visible height back in to account for the fact that if the title 2548 // bar is partially visible, the part of the visible rect which is 2549 // displaying our content is displaced by that amount. 2550 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2551 r.right = viewToContentX(r.right); 2552 r.bottom = viewToContentY(r.bottom); 2553 } 2554 2555 // Sets r to be our visible rectangle in content coordinates. We use this 2556 // method on the native side to compute the position of the fixed layers. 2557 // Uses floating coordinates (necessary to correctly place elements when 2558 // the scale factor is not 1) 2559 private void calcOurContentVisibleRectF(RectF r) { 2560 Rect ri = new Rect(0,0,0,0); 2561 calcOurVisibleRect(ri); 2562 r.left = viewToContentXf(ri.left); 2563 // viewToContentY will remove the total height of the title bar. Add 2564 // the visible height back in to account for the fact that if the title 2565 // bar is partially visible, the part of the visible rect which is 2566 // displaying our content is displaced by that amount. 2567 r.top = viewToContentYf(ri.top + getVisibleTitleHeight()); 2568 r.right = viewToContentXf(ri.right); 2569 r.bottom = viewToContentYf(ri.bottom); 2570 } 2571 2572 static class ViewSizeData { 2573 int mWidth; 2574 int mHeight; 2575 float mHeightWidthRatio; 2576 int mActualViewHeight; 2577 int mTextWrapWidth; 2578 int mAnchorX; 2579 int mAnchorY; 2580 float mScale; 2581 boolean mIgnoreHeight; 2582 } 2583 2584 /** 2585 * Compute unzoomed width and height, and if they differ from the last 2586 * values we sent, send them to webkit (to be used as new viewport) 2587 * 2588 * @param force ensures that the message is sent to webkit even if the width 2589 * or height has not changed since the last message 2590 * 2591 * @return true if new values were sent 2592 */ 2593 boolean sendViewSizeZoom(boolean force) { 2594 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2595 2596 int viewWidth = getViewWidth(); 2597 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2598 // This height could be fixed and be different from actual visible height. 2599 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2600 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2601 // Make the ratio more accurate than (newHeight / newWidth), since the 2602 // latter both are calculated and rounded. 2603 float heightWidthRatio = (float) viewHeight / viewWidth; 2604 /* 2605 * Because the native side may have already done a layout before the 2606 * View system was able to measure us, we have to send a height of 0 to 2607 * remove excess whitespace when we grow our width. This will trigger a 2608 * layout and a change in content size. This content size change will 2609 * mean that contentSizeChanged will either call this method directly or 2610 * indirectly from onSizeChanged. 2611 */ 2612 if (newWidth > mLastWidthSent && mWrapContent) { 2613 newHeight = 0; 2614 heightWidthRatio = 0; 2615 } 2616 // Actual visible content height. 2617 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2618 // Avoid sending another message if the dimensions have not changed. 2619 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2620 actualViewHeight != mLastActualHeightSent) { 2621 ViewSizeData data = new ViewSizeData(); 2622 data.mWidth = newWidth; 2623 data.mHeight = newHeight; 2624 data.mHeightWidthRatio = heightWidthRatio; 2625 data.mActualViewHeight = actualViewHeight; 2626 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2627 data.mScale = mZoomManager.getScale(); 2628 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2629 && !mHeightCanMeasure; 2630 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2631 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2632 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2633 mLastWidthSent = newWidth; 2634 mLastHeightSent = newHeight; 2635 mLastActualHeightSent = actualViewHeight; 2636 mZoomManager.clearDocumentAnchor(); 2637 return true; 2638 } 2639 return false; 2640 } 2641 2642 private int computeRealHorizontalScrollRange() { 2643 if (mDrawHistory) { 2644 return mHistoryWidth; 2645 } else { 2646 // to avoid rounding error caused unnecessary scrollbar, use floor 2647 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2648 } 2649 } 2650 2651 @Override 2652 protected int computeHorizontalScrollRange() { 2653 int range = computeRealHorizontalScrollRange(); 2654 2655 // Adjust reported range if overscrolled to compress the scroll bars 2656 final int scrollX = mScrollX; 2657 final int overscrollRight = computeMaxScrollX(); 2658 if (scrollX < 0) { 2659 range -= scrollX; 2660 } else if (scrollX > overscrollRight) { 2661 range += scrollX - overscrollRight; 2662 } 2663 2664 return range; 2665 } 2666 2667 @Override 2668 protected int computeHorizontalScrollOffset() { 2669 return Math.max(mScrollX, 0); 2670 } 2671 2672 private int computeRealVerticalScrollRange() { 2673 if (mDrawHistory) { 2674 return mHistoryHeight; 2675 } else { 2676 // to avoid rounding error caused unnecessary scrollbar, use floor 2677 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2678 } 2679 } 2680 2681 @Override 2682 protected int computeVerticalScrollRange() { 2683 int range = computeRealVerticalScrollRange(); 2684 2685 // Adjust reported range if overscrolled to compress the scroll bars 2686 final int scrollY = mScrollY; 2687 final int overscrollBottom = computeMaxScrollY(); 2688 if (scrollY < 0) { 2689 range -= scrollY; 2690 } else if (scrollY > overscrollBottom) { 2691 range += scrollY - overscrollBottom; 2692 } 2693 2694 return range; 2695 } 2696 2697 @Override 2698 protected int computeVerticalScrollOffset() { 2699 return Math.max(mScrollY - getTitleHeight(), 0); 2700 } 2701 2702 @Override 2703 protected int computeVerticalScrollExtent() { 2704 return getViewHeight(); 2705 } 2706 2707 /** @hide */ 2708 @Override 2709 protected void onDrawVerticalScrollBar(Canvas canvas, 2710 Drawable scrollBar, 2711 int l, int t, int r, int b) { 2712 if (mScrollY < 0) { 2713 t -= mScrollY; 2714 } 2715 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2716 scrollBar.draw(canvas); 2717 } 2718 2719 @Override 2720 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2721 boolean clampedY) { 2722 // Special-case layer scrolling so that we do not trigger normal scroll 2723 // updating. 2724 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2725 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2726 mScrollingLayerRect.left = scrollX; 2727 mScrollingLayerRect.top = scrollY; 2728 invalidate(); 2729 return; 2730 } 2731 mInOverScrollMode = false; 2732 int maxX = computeMaxScrollX(); 2733 int maxY = computeMaxScrollY(); 2734 if (maxX == 0) { 2735 // do not over scroll x if the page just fits the screen 2736 scrollX = pinLocX(scrollX); 2737 } else if (scrollX < 0 || scrollX > maxX) { 2738 mInOverScrollMode = true; 2739 } 2740 if (scrollY < 0 || scrollY > maxY) { 2741 mInOverScrollMode = true; 2742 } 2743 2744 int oldX = mScrollX; 2745 int oldY = mScrollY; 2746 2747 super.scrollTo(scrollX, scrollY); 2748 2749 if (mOverScrollGlow != null) { 2750 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2751 } 2752 } 2753 2754 /** 2755 * Get the url for the current page. This is not always the same as the url 2756 * passed to WebViewClient.onPageStarted because although the load for 2757 * that url has begun, the current page may not have changed. 2758 * @return The url for the current page. 2759 */ 2760 public String getUrl() { 2761 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2762 return h != null ? h.getUrl() : null; 2763 } 2764 2765 /** 2766 * Get the original url for the current page. This is not always the same 2767 * as the url passed to WebViewClient.onPageStarted because although the 2768 * load for that url has begun, the current page may not have changed. 2769 * Also, there may have been redirects resulting in a different url to that 2770 * originally requested. 2771 * @return The url that was originally requested for the current page. 2772 */ 2773 public String getOriginalUrl() { 2774 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2775 return h != null ? h.getOriginalUrl() : null; 2776 } 2777 2778 /** 2779 * Get the title for the current page. This is the title of the current page 2780 * until WebViewClient.onReceivedTitle is called. 2781 * @return The title for the current page. 2782 */ 2783 public String getTitle() { 2784 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2785 return h != null ? h.getTitle() : null; 2786 } 2787 2788 /** 2789 * Get the favicon for the current page. This is the favicon of the current 2790 * page until WebViewClient.onReceivedIcon is called. 2791 * @return The favicon for the current page. 2792 */ 2793 public Bitmap getFavicon() { 2794 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2795 return h != null ? h.getFavicon() : null; 2796 } 2797 2798 /** 2799 * Get the touch icon url for the apple-touch-icon <link> element, or 2800 * a URL on this site's server pointing to the standard location of a 2801 * touch icon. 2802 * @hide 2803 */ 2804 public String getTouchIconUrl() { 2805 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2806 return h != null ? h.getTouchIconUrl() : null; 2807 } 2808 2809 /** 2810 * Get the progress for the current page. 2811 * @return The progress for the current page between 0 and 100. 2812 */ 2813 public int getProgress() { 2814 return mCallbackProxy.getProgress(); 2815 } 2816 2817 /** 2818 * @return the height of the HTML content. 2819 */ 2820 public int getContentHeight() { 2821 return mContentHeight; 2822 } 2823 2824 /** 2825 * @return the width of the HTML content. 2826 * @hide 2827 */ 2828 public int getContentWidth() { 2829 return mContentWidth; 2830 } 2831 2832 /** 2833 * Pause all layout, parsing, and JavaScript timers for all webviews. This 2834 * is a global requests, not restricted to just this webview. This can be 2835 * useful if the application has been paused. 2836 */ 2837 public void pauseTimers() { 2838 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2839 } 2840 2841 /** 2842 * Resume all layout, parsing, and JavaScript timers for all webviews. 2843 * This will resume dispatching all timers. 2844 */ 2845 public void resumeTimers() { 2846 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2847 } 2848 2849 /** 2850 * Call this to pause any extra processing associated with this WebView and 2851 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 2852 * is taken offscreen, this could be called to reduce unnecessary CPU or 2853 * network traffic. When the WebView is again "active", call onResume(). 2854 * 2855 * Note that this differs from pauseTimers(), which affects all WebViews. 2856 */ 2857 public void onPause() { 2858 if (!mIsPaused) { 2859 mIsPaused = true; 2860 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2861 } 2862 } 2863 2864 /** 2865 * Call this to resume a WebView after a previous call to onPause(). 2866 */ 2867 public void onResume() { 2868 if (mIsPaused) { 2869 mIsPaused = false; 2870 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2871 } 2872 } 2873 2874 /** 2875 * Returns true if the view is paused, meaning onPause() was called. Calling 2876 * onResume() sets the paused state back to false. 2877 * @hide 2878 */ 2879 public boolean isPaused() { 2880 return mIsPaused; 2881 } 2882 2883 /** 2884 * Call this to inform the view that memory is low so that it can 2885 * free any available memory. 2886 */ 2887 public void freeMemory() { 2888 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2889 } 2890 2891 /** 2892 * Clear the resource cache. Note that the cache is per-application, so 2893 * this will clear the cache for all WebViews used. 2894 * 2895 * @param includeDiskFiles If false, only the RAM cache is cleared. 2896 */ 2897 public void clearCache(boolean includeDiskFiles) { 2898 // Note: this really needs to be a static method as it clears cache for all 2899 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2900 // we can't make this static. 2901 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2902 includeDiskFiles ? 1 : 0, 0); 2903 } 2904 2905 /** 2906 * Make sure that clearing the form data removes the adapter from the 2907 * currently focused textfield if there is one. 2908 */ 2909 public void clearFormData() { 2910 if (inEditingMode()) { 2911 AutoCompleteAdapter adapter = null; 2912 mWebTextView.setAdapterCustom(adapter); 2913 } 2914 } 2915 2916 /** 2917 * Tell the WebView to clear its internal back/forward list. 2918 */ 2919 public void clearHistory() { 2920 mCallbackProxy.getBackForwardList().setClearPending(); 2921 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2922 } 2923 2924 /** 2925 * Clear the SSL preferences table stored in response to proceeding with SSL 2926 * certificate errors. 2927 */ 2928 public void clearSslPreferences() { 2929 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2930 } 2931 2932 /** 2933 * Return the WebBackForwardList for this WebView. This contains the 2934 * back/forward list for use in querying each item in the history stack. 2935 * This is a copy of the private WebBackForwardList so it contains only a 2936 * snapshot of the current state. Multiple calls to this method may return 2937 * different objects. The object returned from this method will not be 2938 * updated to reflect any new state. 2939 */ 2940 public WebBackForwardList copyBackForwardList() { 2941 return mCallbackProxy.getBackForwardList().clone(); 2942 } 2943 2944 /* 2945 * Highlight and scroll to the next occurance of String in findAll. 2946 * Wraps the page infinitely, and scrolls. Must be called after 2947 * calling findAll. 2948 * 2949 * @param forward Direction to search. 2950 */ 2951 public void findNext(boolean forward) { 2952 if (0 == mNativeClass) return; // client isn't initialized 2953 nativeFindNext(forward); 2954 } 2955 2956 /* 2957 * Find all instances of find on the page and highlight them. 2958 * @param find String to find. 2959 * @return int The number of occurances of the String "find" 2960 * that were found. 2961 */ 2962 public int findAll(String find) { 2963 if (0 == mNativeClass) return 0; // client isn't initialized 2964 int result = find != null ? nativeFindAll(find.toLowerCase(), 2965 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 2966 invalidate(); 2967 mLastFind = find; 2968 return result; 2969 } 2970 2971 /** 2972 * Start an ActionMode for finding text in this WebView. 2973 * @param text If non-null, will be the initial text to search for. 2974 * Otherwise, the last String searched for in this WebView will 2975 * be used to start. 2976 * @param showIme If true, show the IME, assuming the user will begin typing. 2977 * If false and text is non-null, perform a find all. 2978 * @return boolean True if the find dialog is shown, false otherwise. 2979 */ 2980 public boolean showFindDialog(String text, boolean showIme) { 2981 FindActionModeCallback callback = new FindActionModeCallback(mContext); 2982 if (startActionMode(callback) == null) { 2983 // Could not start the action mode, so end Find on page 2984 return false; 2985 } 2986 mFindCallback = callback; 2987 setFindIsUp(true); 2988 mFindCallback.setWebView(this); 2989 if (showIme) { 2990 mFindCallback.showSoftInput(); 2991 } else if (text != null) { 2992 mFindCallback.setText(text); 2993 mFindCallback.findAll(); 2994 return true; 2995 } 2996 if (text == null) { 2997 text = mLastFind; 2998 } 2999 if (text != null) { 3000 mFindCallback.setText(text); 3001 } 3002 return true; 3003 } 3004 3005 /** 3006 * Keep track of the find callback so that we can remove its titlebar if 3007 * necessary. 3008 */ 3009 private FindActionModeCallback mFindCallback; 3010 3011 /** 3012 * Toggle whether the find dialog is showing, for both native and Java. 3013 */ 3014 private void setFindIsUp(boolean isUp) { 3015 mFindIsUp = isUp; 3016 if (0 == mNativeClass) return; // client isn't initialized 3017 nativeSetFindIsUp(isUp); 3018 } 3019 3020 /** 3021 * Return the index of the currently highlighted match. 3022 */ 3023 int findIndex() { 3024 if (0 == mNativeClass) return -1; 3025 return nativeFindIndex(); 3026 } 3027 3028 // Used to know whether the find dialog is open. Affects whether 3029 // or not we draw the highlights for matches. 3030 private boolean mFindIsUp; 3031 3032 // Keep track of the last string sent, so we can search again when find is 3033 // reopened. 3034 private String mLastFind; 3035 3036 /** 3037 * Return the first substring consisting of the address of a physical 3038 * location. Currently, only addresses in the United States are detected, 3039 * and consist of: 3040 * - a house number 3041 * - a street name 3042 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3043 * - a city name 3044 * - a state or territory, either spelled out or two-letter abbr. 3045 * - an optional 5 digit or 9 digit zip code. 3046 * 3047 * All names must be correctly capitalized, and the zip code, if present, 3048 * must be valid for the state. The street type must be a standard USPS 3049 * spelling or abbreviation. The state or territory must also be spelled 3050 * or abbreviated using USPS standards. The house number may not exceed 3051 * five digits. 3052 * @param addr The string to search for addresses. 3053 * 3054 * @return the address, or if no address is found, return null. 3055 */ 3056 public static String findAddress(String addr) { 3057 return findAddress(addr, false); 3058 } 3059 3060 /** 3061 * @hide 3062 * Return the first substring consisting of the address of a physical 3063 * location. Currently, only addresses in the United States are detected, 3064 * and consist of: 3065 * - a house number 3066 * - a street name 3067 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3068 * - a city name 3069 * - a state or territory, either spelled out or two-letter abbr. 3070 * - an optional 5 digit or 9 digit zip code. 3071 * 3072 * Names are optionally capitalized, and the zip code, if present, 3073 * must be valid for the state. The street type must be a standard USPS 3074 * spelling or abbreviation. The state or territory must also be spelled 3075 * or abbreviated using USPS standards. The house number may not exceed 3076 * five digits. 3077 * @param addr The string to search for addresses. 3078 * @param caseInsensitive addr Set to true to make search ignore case. 3079 * 3080 * @return the address, or if no address is found, return null. 3081 */ 3082 public static String findAddress(String addr, boolean caseInsensitive) { 3083 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3084 } 3085 3086 /* 3087 * Clear the highlighting surrounding text matches created by findAll. 3088 */ 3089 public void clearMatches() { 3090 if (mNativeClass == 0) 3091 return; 3092 nativeSetFindIsEmpty(); 3093 invalidate(); 3094 } 3095 3096 /** 3097 * Called when the find ActionMode ends. 3098 */ 3099 void notifyFindDialogDismissed() { 3100 mFindCallback = null; 3101 if (mWebViewCore == null) { 3102 return; 3103 } 3104 clearMatches(); 3105 setFindIsUp(false); 3106 // Now that the dialog has been removed, ensure that we scroll to a 3107 // location that is not beyond the end of the page. 3108 pinScrollTo(mScrollX, mScrollY, false, 0); 3109 invalidate(); 3110 } 3111 3112 /** 3113 * Query the document to see if it contains any image references. The 3114 * message object will be dispatched with arg1 being set to 1 if images 3115 * were found and 0 if the document does not reference any images. 3116 * @param response The message that will be dispatched with the result. 3117 */ 3118 public void documentHasImages(Message response) { 3119 if (response == null) { 3120 return; 3121 } 3122 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3123 } 3124 3125 /** 3126 * Request the scroller to abort any ongoing animation 3127 * 3128 * @hide 3129 */ 3130 public void stopScroll() { 3131 mScroller.forceFinished(true); 3132 mLastVelocity = 0; 3133 } 3134 3135 @Override 3136 public void computeScroll() { 3137 if (mScroller.computeScrollOffset()) { 3138 int oldX = mScrollX; 3139 int oldY = mScrollY; 3140 int x = mScroller.getCurrX(); 3141 int y = mScroller.getCurrY(); 3142 invalidate(); // So we draw again 3143 3144 if (!mScroller.isFinished()) { 3145 int rangeX = computeMaxScrollX(); 3146 int rangeY = computeMaxScrollY(); 3147 int overflingDistance = mOverflingDistance; 3148 3149 // Use the layer's scroll data if needed. 3150 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3151 oldX = mScrollingLayerRect.left; 3152 oldY = mScrollingLayerRect.top; 3153 rangeX = mScrollingLayerRect.right; 3154 rangeY = mScrollingLayerRect.bottom; 3155 // No overscrolling for layers. 3156 overflingDistance = 0; 3157 } 3158 3159 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3160 rangeX, rangeY, 3161 overflingDistance, overflingDistance, false); 3162 3163 if (mOverScrollGlow != null) { 3164 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3165 } 3166 } else { 3167 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3168 mScrollX = x; 3169 mScrollY = y; 3170 } else { 3171 // Update the layer position instead of WebView. 3172 nativeScrollLayer(mScrollingLayer, x, y); 3173 mScrollingLayerRect.left = x; 3174 mScrollingLayerRect.top = y; 3175 } 3176 abortAnimation(); 3177 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3178 WebViewCore.resumePriority(); 3179 if (!mSelectingText) { 3180 WebViewCore.resumeUpdatePicture(mWebViewCore); 3181 } 3182 if (oldX != mScrollX || oldY != mScrollY) { 3183 sendOurVisibleRect(); 3184 } 3185 } 3186 } else { 3187 super.computeScroll(); 3188 } 3189 } 3190 3191 private static int computeDuration(int dx, int dy) { 3192 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3193 int duration = distance * 1000 / STD_SPEED; 3194 return Math.min(duration, MAX_DURATION); 3195 } 3196 3197 // helper to pin the scrollBy parameters (already in view coordinates) 3198 // returns true if the scroll was changed 3199 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3200 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3201 } 3202 // helper to pin the scrollTo parameters (already in view coordinates) 3203 // returns true if the scroll was changed 3204 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3205 x = pinLocX(x); 3206 y = pinLocY(y); 3207 int dx = x - mScrollX; 3208 int dy = y - mScrollY; 3209 3210 if ((dx | dy) == 0) { 3211 return false; 3212 } 3213 abortAnimation(); 3214 if (animate) { 3215 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3216 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3217 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3218 awakenScrollBars(mScroller.getDuration()); 3219 invalidate(); 3220 } else { 3221 scrollTo(x, y); 3222 } 3223 return true; 3224 } 3225 3226 // Scale from content to view coordinates, and pin. 3227 // Also called by jni webview.cpp 3228 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3229 if (mDrawHistory) { 3230 // disallow WebView to change the scroll position as History Picture 3231 // is used in the view system. 3232 // TODO: as we switchOutDrawHistory when trackball or navigation 3233 // keys are hit, this should be safe. Right? 3234 return false; 3235 } 3236 cx = contentToViewDimension(cx); 3237 cy = contentToViewDimension(cy); 3238 if (mHeightCanMeasure) { 3239 // move our visible rect according to scroll request 3240 if (cy != 0) { 3241 Rect tempRect = new Rect(); 3242 calcOurVisibleRect(tempRect); 3243 tempRect.offset(cx, cy); 3244 requestRectangleOnScreen(tempRect); 3245 } 3246 // FIXME: We scroll horizontally no matter what because currently 3247 // ScrollView and ListView will not scroll horizontally. 3248 // FIXME: Why do we only scroll horizontally if there is no 3249 // vertical scroll? 3250// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3251 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3252 } else { 3253 return pinScrollBy(cx, cy, animate, 0); 3254 } 3255 } 3256 3257 /** 3258 * Called by CallbackProxy when the page starts loading. 3259 * @param url The URL of the page which has started loading. 3260 */ 3261 /* package */ void onPageStarted(String url) { 3262 // every time we start a new page, we want to reset the 3263 // WebView certificate: if the new site is secure, we 3264 // will reload it and get a new certificate set; 3265 // if the new site is not secure, the certificate must be 3266 // null, and that will be the case 3267 setCertificate(null); 3268 3269 // reset the flag since we set to true in if need after 3270 // loading is see onPageFinished(Url) 3271 mAccessibilityScriptInjected = false; 3272 } 3273 3274 /** 3275 * Called by CallbackProxy when the page finishes loading. 3276 * @param url The URL of the page which has finished loading. 3277 */ 3278 /* package */ void onPageFinished(String url) { 3279 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3280 // If the user is now on a different page, or has scrolled the page 3281 // past the point where the title bar is offscreen, ignore the 3282 // scroll request. 3283 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3284 && mScrollX == 0 && mScrollY == 0) { 3285 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3286 SLIDE_TITLE_DURATION); 3287 } 3288 mPageThatNeedsToSlideTitleBarOffScreen = null; 3289 } 3290 3291 injectAccessibilityForUrl(url); 3292 } 3293 3294 /** 3295 * This method injects accessibility in the loaded document if accessibility 3296 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3297 * If no URL specific script is found or JavaScript is disabled we fallback to 3298 * the default {@link AccessibilityInjector} implementation. 3299 * </p> 3300 * If the URL has the "axs" paramter set to 1 it has already done the 3301 * script injection so we do nothing. If the parameter is set to 0 3302 * the URL opts out accessibility script injection so we fall back to 3303 * the default {@link AccessibilityInjector}. 3304 * </p> 3305 * Note: If the user has not opted-in the accessibility script injection no scripts 3306 * are injected rather the default {@link AccessibilityInjector} implementation 3307 * is used. 3308 * 3309 * @param url The URL loaded by this {@link WebView}. 3310 */ 3311 private void injectAccessibilityForUrl(String url) { 3312 if (mWebViewCore == null) { 3313 return; 3314 } 3315 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3316 3317 if (!accessibilityManager.isEnabled()) { 3318 // it is possible that accessibility was turned off between reloads 3319 ensureAccessibilityScriptInjectorInstance(false); 3320 return; 3321 } 3322 3323 if (!getSettings().getJavaScriptEnabled()) { 3324 // no JS so we fallback to the basic buil-in support 3325 ensureAccessibilityScriptInjectorInstance(true); 3326 return; 3327 } 3328 3329 // check the URL "axs" parameter to choose appropriate action 3330 int axsParameterValue = getAxsUrlParameterValue(url); 3331 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3332 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3333 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3334 if (onDeviceScriptInjectionEnabled) { 3335 ensureAccessibilityScriptInjectorInstance(false); 3336 // neither script injected nor script injection opted out => we inject 3337 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3338 // TODO: Set this flag after successfull script injection. Maybe upon injection 3339 // the chooser should update the meta tag and we check it to declare success 3340 mAccessibilityScriptInjected = true; 3341 } else { 3342 // injection disabled so we fallback to the basic built-in support 3343 ensureAccessibilityScriptInjectorInstance(true); 3344 } 3345 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3346 // injection opted out so we fallback to the basic buil-in support 3347 ensureAccessibilityScriptInjectorInstance(true); 3348 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3349 ensureAccessibilityScriptInjectorInstance(false); 3350 // the URL provides accessibility but we still need to add our generic script 3351 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3352 } else { 3353 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3354 } 3355 } 3356 3357 /** 3358 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3359 * 3360 * @param present True to ensure an insance, false to ensure no instance. 3361 */ 3362 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3363 if (present) { 3364 if (mAccessibilityInjector == null) { 3365 mAccessibilityInjector = new AccessibilityInjector(this); 3366 } 3367 } else { 3368 mAccessibilityInjector = null; 3369 } 3370 } 3371 3372 /** 3373 * Gets the "axs" URL parameter value. 3374 * 3375 * @param url A url to fetch the paramter from. 3376 * @return The parameter value if such, -1 otherwise. 3377 */ 3378 private int getAxsUrlParameterValue(String url) { 3379 if (mMatchAxsUrlParameterPattern == null) { 3380 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3381 } 3382 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3383 if (matcher.find()) { 3384 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3385 return Integer.parseInt(keyValuePair.split("=")[1]); 3386 } 3387 return -1; 3388 } 3389 3390 /** 3391 * The URL of a page that sent a message to scroll the title bar off screen. 3392 * 3393 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3394 * title bar off the screen. Sometimes, the scroll position is set before 3395 * the page finishes loading. Rather than scrolling while the page is still 3396 * loading, keep track of the URL and new scroll position so we can perform 3397 * the scroll once the page finishes loading. 3398 */ 3399 private String mPageThatNeedsToSlideTitleBarOffScreen; 3400 3401 /** 3402 * The destination Y scroll position to be used when the page finishes 3403 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3404 */ 3405 private int mYDistanceToSlideTitleOffScreen; 3406 3407 // scale from content to view coordinates, and pin 3408 // return true if pin caused the final x/y different than the request cx/cy, 3409 // and a future scroll may reach the request cx/cy after our size has 3410 // changed 3411 // return false if the view scroll to the exact position as it is requested, 3412 // where negative numbers are taken to mean 0 3413 private boolean setContentScrollTo(int cx, int cy) { 3414 if (mDrawHistory) { 3415 // disallow WebView to change the scroll position as History Picture 3416 // is used in the view system. 3417 // One known case where this is called is that WebCore tries to 3418 // restore the scroll position. As history Picture already uses the 3419 // saved scroll position, it is ok to skip this. 3420 return false; 3421 } 3422 int vx; 3423 int vy; 3424 if ((cx | cy) == 0) { 3425 // If the page is being scrolled to (0,0), do not add in the title 3426 // bar's height, and simply scroll to (0,0). (The only other work 3427 // in contentToView_ is to multiply, so this would not change 0.) 3428 vx = 0; 3429 vy = 0; 3430 } else { 3431 vx = contentToViewX(cx); 3432 vy = contentToViewY(cy); 3433 } 3434// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3435// vx + " " + vy + "]"); 3436 // Some mobile sites attempt to scroll the title bar off the page by 3437 // scrolling to (0,1). If we are at the top left corner of the 3438 // page, assume this is an attempt to scroll off the title bar, and 3439 // animate the title bar off screen slowly enough that the user can see 3440 // it. 3441 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3442 && mTitleBar != null) { 3443 // FIXME: 100 should be defined somewhere as our max progress. 3444 if (getProgress() < 100) { 3445 // Wait to scroll the title bar off screen until the page has 3446 // finished loading. Keep track of the URL and the destination 3447 // Y position 3448 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3449 mYDistanceToSlideTitleOffScreen = vy; 3450 } else { 3451 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3452 } 3453 // Since we are animating, we have not yet reached the desired 3454 // scroll position. Do not return true to request another attempt 3455 return false; 3456 } 3457 pinScrollTo(vx, vy, false, 0); 3458 // If the request was to scroll to a negative coordinate, treat it as if 3459 // it was a request to scroll to 0 3460 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3461 return true; 3462 } else { 3463 return false; 3464 } 3465 } 3466 3467 // scale from content to view coordinates, and pin 3468 private void spawnContentScrollTo(int cx, int cy) { 3469 if (mDrawHistory) { 3470 // disallow WebView to change the scroll position as History Picture 3471 // is used in the view system. 3472 return; 3473 } 3474 int vx = contentToViewX(cx); 3475 int vy = contentToViewY(cy); 3476 pinScrollTo(vx, vy, true, 0); 3477 } 3478 3479 /** 3480 * These are from webkit, and are in content coordinate system (unzoomed) 3481 */ 3482 private void contentSizeChanged(boolean updateLayout) { 3483 // suppress 0,0 since we usually see real dimensions soon after 3484 // this avoids drawing the prev content in a funny place. If we find a 3485 // way to consolidate these notifications, this check may become 3486 // obsolete 3487 if ((mContentWidth | mContentHeight) == 0) { 3488 return; 3489 } 3490 3491 if (mHeightCanMeasure) { 3492 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3493 || updateLayout) { 3494 requestLayout(); 3495 } 3496 } else if (mWidthCanMeasure) { 3497 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3498 || updateLayout) { 3499 requestLayout(); 3500 } 3501 } else { 3502 // If we don't request a layout, try to send our view size to the 3503 // native side to ensure that WebCore has the correct dimensions. 3504 sendViewSizeZoom(false); 3505 } 3506 } 3507 3508 /** 3509 * Set the WebViewClient that will receive various notifications and 3510 * requests. This will replace the current handler. 3511 * @param client An implementation of WebViewClient. 3512 */ 3513 public void setWebViewClient(WebViewClient client) { 3514 mCallbackProxy.setWebViewClient(client); 3515 } 3516 3517 /** 3518 * Gets the WebViewClient 3519 * @return the current WebViewClient instance. 3520 * 3521 *@hide pending API council approval. 3522 */ 3523 public WebViewClient getWebViewClient() { 3524 return mCallbackProxy.getWebViewClient(); 3525 } 3526 3527 /** 3528 * Register the interface to be used when content can not be handled by 3529 * the rendering engine, and should be downloaded instead. This will replace 3530 * the current handler. 3531 * @param listener An implementation of DownloadListener. 3532 */ 3533 public void setDownloadListener(DownloadListener listener) { 3534 mCallbackProxy.setDownloadListener(listener); 3535 } 3536 3537 /** 3538 * Set the chrome handler. This is an implementation of WebChromeClient for 3539 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3540 * This will replace the current handler. 3541 * @param client An implementation of WebChromeClient. 3542 */ 3543 public void setWebChromeClient(WebChromeClient client) { 3544 mCallbackProxy.setWebChromeClient(client); 3545 } 3546 3547 /** 3548 * Gets the chrome handler. 3549 * @return the current WebChromeClient instance. 3550 * 3551 * @hide API council approval. 3552 */ 3553 public WebChromeClient getWebChromeClient() { 3554 return mCallbackProxy.getWebChromeClient(); 3555 } 3556 3557 /** 3558 * Set the back/forward list client. This is an implementation of 3559 * WebBackForwardListClient for handling new items and changes in the 3560 * history index. 3561 * @param client An implementation of WebBackForwardListClient. 3562 * {@hide} 3563 */ 3564 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3565 mCallbackProxy.setWebBackForwardListClient(client); 3566 } 3567 3568 /** 3569 * Gets the WebBackForwardListClient. 3570 * {@hide} 3571 */ 3572 public WebBackForwardListClient getWebBackForwardListClient() { 3573 return mCallbackProxy.getWebBackForwardListClient(); 3574 } 3575 3576 /** 3577 * Set the Picture listener. This is an interface used to receive 3578 * notifications of a new Picture. 3579 * @param listener An implementation of WebView.PictureListener. 3580 */ 3581 public void setPictureListener(PictureListener listener) { 3582 mPictureListener = listener; 3583 } 3584 3585 /** 3586 * {@hide} 3587 */ 3588 /* FIXME: Debug only! Remove for SDK! */ 3589 public void externalRepresentation(Message callback) { 3590 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3591 } 3592 3593 /** 3594 * {@hide} 3595 */ 3596 /* FIXME: Debug only! Remove for SDK! */ 3597 public void documentAsText(Message callback) { 3598 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3599 } 3600 3601 /** 3602 * Use this function to bind an object to JavaScript so that the 3603 * methods can be accessed from JavaScript. 3604 * <p><strong>IMPORTANT:</strong> 3605 * <ul> 3606 * <li> Using addJavascriptInterface() allows JavaScript to control your 3607 * application. This can be a very useful feature or a dangerous security 3608 * issue. When the HTML in the WebView is untrustworthy (for example, part 3609 * or all of the HTML is provided by some person or process), then an 3610 * attacker could inject HTML that will execute your code and possibly any 3611 * code of the attacker's choosing.<br> 3612 * Do not use addJavascriptInterface() unless all of the HTML in this 3613 * WebView was written by you.</li> 3614 * <li> The Java object that is bound runs in another thread and not in 3615 * the thread that it was constructed in.</li> 3616 * </ul></p> 3617 * @param obj The class instance to bind to JavaScript, null instances are 3618 * ignored. 3619 * @param interfaceName The name to used to expose the instance in 3620 * JavaScript. 3621 */ 3622 public void addJavascriptInterface(Object obj, String interfaceName) { 3623 if (obj == null) { 3624 return; 3625 } 3626 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3627 arg.mObject = obj; 3628 arg.mInterfaceName = interfaceName; 3629 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3630 } 3631 3632 /** 3633 * Removes a previously added JavaScript interface with the given name. 3634 * @param interfaceName The name of the interface to remove. 3635 */ 3636 public void removeJavascriptInterface(String interfaceName) { 3637 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3638 arg.mInterfaceName = interfaceName; 3639 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3640 } 3641 3642 /** 3643 * Return the WebSettings object used to control the settings for this 3644 * WebView. 3645 * @return A WebSettings object that can be used to control this WebView's 3646 * settings. 3647 */ 3648 public WebSettings getSettings() { 3649 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3650 } 3651 3652 /** 3653 * Return the list of currently loaded plugins. 3654 * @return The list of currently loaded plugins. 3655 * 3656 * @deprecated This was used for Gears, which has been deprecated. 3657 */ 3658 @Deprecated 3659 public static synchronized PluginList getPluginList() { 3660 return new PluginList(); 3661 } 3662 3663 /** 3664 * @deprecated This was used for Gears, which has been deprecated. 3665 */ 3666 @Deprecated 3667 public void refreshPlugins(boolean reloadOpenPages) { } 3668 3669 //------------------------------------------------------------------------- 3670 // Override View methods 3671 //------------------------------------------------------------------------- 3672 3673 @Override 3674 protected void finalize() throws Throwable { 3675 try { 3676 destroy(); 3677 } finally { 3678 super.finalize(); 3679 } 3680 } 3681 3682 @Override 3683 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3684 if (child == mTitleBar) { 3685 // When drawing the title bar, move it horizontally to always show 3686 // at the top of the WebView. 3687 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3688 int newTop = Math.min(0, mScrollY); 3689 mTitleBar.setBottom(newTop + getTitleHeight()); 3690 mTitleBar.setTop(newTop); 3691 } 3692 return super.drawChild(canvas, child, drawingTime); 3693 } 3694 3695 private void drawContent(Canvas canvas) { 3696 // Update the buttons in the picture, so when we draw the picture 3697 // to the screen, they are in the correct state. 3698 // Tell the native side if user is a) touching the screen, 3699 // b) pressing the trackball down, or c) pressing the enter key 3700 // If the cursor is on a button, we need to draw it in the pressed 3701 // state. 3702 // If mNativeClass is 0, we should not reach here, so we do not 3703 // need to check it again. 3704 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3705 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3706 || mTrackballDown || mGotCenterDown, false); 3707 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3708 } 3709 3710 /** 3711 * Draw the background when beyond bounds 3712 * @param canvas Canvas to draw into 3713 */ 3714 private void drawOverScrollBackground(Canvas canvas) { 3715 if (mOverScrollBackground == null) { 3716 mOverScrollBackground = new Paint(); 3717 Bitmap bm = BitmapFactory.decodeResource( 3718 mContext.getResources(), 3719 com.android.internal.R.drawable.status_bar_background); 3720 mOverScrollBackground.setShader(new BitmapShader(bm, 3721 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3722 mOverScrollBorder = new Paint(); 3723 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3724 mOverScrollBorder.setStrokeWidth(0); 3725 mOverScrollBorder.setColor(0xffbbbbbb); 3726 } 3727 3728 int top = 0; 3729 int right = computeRealHorizontalScrollRange(); 3730 int bottom = top + computeRealVerticalScrollRange(); 3731 // first draw the background and anchor to the top of the view 3732 canvas.save(); 3733 canvas.translate(mScrollX, mScrollY); 3734 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3735 - mScrollY, Region.Op.DIFFERENCE); 3736 canvas.drawPaint(mOverScrollBackground); 3737 canvas.restore(); 3738 // then draw the border 3739 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3740 // next clip the region for the content 3741 canvas.clipRect(0, top, right, bottom); 3742 } 3743 3744 @Override 3745 protected void onDraw(Canvas canvas) { 3746 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3747 if (mNativeClass == 0) { 3748 return; 3749 } 3750 3751 // if both mContentWidth and mContentHeight are 0, it means there is no 3752 // valid Picture passed to WebView yet. This can happen when WebView 3753 // just starts. Draw the background and return. 3754 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3755 canvas.drawColor(mBackgroundColor); 3756 return; 3757 } 3758 3759 if (canvas.isHardwareAccelerated()) { 3760 mZoomManager.setHardwareAccelerated(); 3761 } 3762 3763 int saveCount = canvas.save(); 3764 if (mInOverScrollMode && !getSettings() 3765 .getUseWebViewBackgroundForOverscrollBackground()) { 3766 drawOverScrollBackground(canvas); 3767 } 3768 if (mTitleBar != null) { 3769 canvas.translate(0, (int) mTitleBar.getHeight()); 3770 } 3771 drawContent(canvas); 3772 canvas.restoreToCount(saveCount); 3773 3774 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3775 invalidate(); 3776 } 3777 if (inEditingMode()) { 3778 mWebTextView.onDrawSubstitute(); 3779 } 3780 mWebViewCore.signalRepaintDone(); 3781 3782 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3783 invalidate(); 3784 } 3785 3786 // paint the highlight in the end 3787 if (!mTouchHighlightRegion.isEmpty()) { 3788 if (mTouchHightlightPaint == null) { 3789 mTouchHightlightPaint = new Paint(); 3790 mTouchHightlightPaint.setColor(mHightlightColor); 3791 mTouchHightlightPaint.setAntiAlias(true); 3792 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3793 TOUCH_HIGHLIGHT_ARC)); 3794 } 3795 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3796 mTouchHightlightPaint); 3797 } 3798 if (DEBUG_TOUCH_HIGHLIGHT) { 3799 if (getSettings().getNavDump()) { 3800 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3801 if (mTouchCrossHairColor == null) { 3802 mTouchCrossHairColor = new Paint(); 3803 mTouchCrossHairColor.setColor(Color.RED); 3804 } 3805 canvas.drawLine(mTouchHighlightX - mNavSlop, 3806 mTouchHighlightY - mNavSlop, mTouchHighlightX 3807 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3808 + 1, mTouchCrossHairColor); 3809 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3810 mTouchHighlightY - mNavSlop, mTouchHighlightX 3811 - mNavSlop, 3812 mTouchHighlightY + mNavSlop + 1, 3813 mTouchCrossHairColor); 3814 } 3815 } 3816 } 3817 } 3818 3819 private void removeTouchHighlight(boolean removePendingMessage) { 3820 if (removePendingMessage) { 3821 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3822 } 3823 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3824 } 3825 3826 @Override 3827 public void setLayoutParams(ViewGroup.LayoutParams params) { 3828 if (params.height == LayoutParams.WRAP_CONTENT) { 3829 mWrapContent = true; 3830 } 3831 super.setLayoutParams(params); 3832 } 3833 3834 @Override 3835 public boolean performLongClick() { 3836 // performLongClick() is the result of a delayed message. If we switch 3837 // to windows overview, the WebView will be temporarily removed from the 3838 // view system. In that case, do nothing. 3839 if (getParent() == null) return false; 3840 3841 // A multi-finger gesture can look like a long press; make sure we don't take 3842 // long press actions if we're scaling. 3843 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3844 if (detector != null && detector.isInProgress()) { 3845 return false; 3846 } 3847 3848 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3849 // Send the click so that the textfield is in focus 3850 centerKeyPressOnTextField(); 3851 rebuildWebTextView(); 3852 } else { 3853 clearTextEntry(); 3854 } 3855 if (inEditingMode()) { 3856 // Since we just called rebuildWebTextView, the layout is not set 3857 // properly. Update it so it can correctly find the word to select. 3858 mWebTextView.ensureLayout(); 3859 // Provide a touch down event to WebTextView, which will allow it 3860 // to store the location to use in performLongClick. 3861 AbsoluteLayout.LayoutParams params 3862 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 3863 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 3864 mLastTouchTime, MotionEvent.ACTION_DOWN, 3865 mLastTouchX - params.x + mScrollX, 3866 mLastTouchY - params.y + mScrollY, 0); 3867 mWebTextView.dispatchTouchEvent(fake); 3868 return mWebTextView.performLongClick(); 3869 } 3870 if (mSelectingText) return false; // long click does nothing on selection 3871 /* if long click brings up a context menu, the super function 3872 * returns true and we're done. Otherwise, nothing happened when 3873 * the user clicked. */ 3874 if (super.performLongClick()) { 3875 return true; 3876 } 3877 /* In the case where the application hasn't already handled the long 3878 * click action, look for a word under the click. If one is found, 3879 * animate the text selection into view. 3880 * FIXME: no animation code yet */ 3881 return selectText(); 3882 } 3883 3884 /** 3885 * Select the word at the last click point. 3886 * 3887 * @hide pending API council approval 3888 */ 3889 public boolean selectText() { 3890 int x = viewToContentX(mLastTouchX + mScrollX); 3891 int y = viewToContentY(mLastTouchY + mScrollY); 3892 return selectText(x, y); 3893 } 3894 3895 /** 3896 * Select the word at the indicated content coordinates. 3897 */ 3898 boolean selectText(int x, int y) { 3899 if (!setUpSelect()) { 3900 return false; 3901 } 3902 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3903 nativeSetExtendSelection(); 3904 mDrawSelectionPointer = false; 3905 mSelectionStarted = true; 3906 mTouchMode = TOUCH_DRAG_MODE; 3907 return true; 3908 } 3909 selectionDone(); 3910 return false; 3911 } 3912 3913 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3914 3915 @Override 3916 protected void onConfigurationChanged(Configuration newConfig) { 3917 if (mSelectingText && mOrientation != newConfig.orientation) { 3918 selectionDone(); 3919 } 3920 mOrientation = newConfig.orientation; 3921 } 3922 3923 /** 3924 * Keep track of the Callback so we can end its ActionMode or remove its 3925 * titlebar. 3926 */ 3927 private SelectActionModeCallback mSelectCallback; 3928 3929 // These values are possible options for didUpdateWebTextViewDimensions. 3930 private static final int FULLY_ON_SCREEN = 0; 3931 private static final int INTERSECTS_SCREEN = 1; 3932 private static final int ANYWHERE = 2; 3933 3934 /** 3935 * Check to see if the focused textfield/textarea is still on screen. If it 3936 * is, update the the dimensions and location of WebTextView. Otherwise, 3937 * remove the WebTextView. Should be called when the zoom level changes. 3938 * @param intersection How to determine whether the textfield/textarea is 3939 * still on screen. 3940 * @return boolean True if the textfield/textarea is still on screen and the 3941 * dimensions/location of WebTextView have been updated. 3942 */ 3943 private boolean didUpdateWebTextViewDimensions(int intersection) { 3944 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3945 Rect vBox = contentToViewRect(contentBounds); 3946 Rect visibleRect = new Rect(); 3947 calcOurVisibleRect(visibleRect); 3948 // If the textfield is on screen, place the WebTextView in 3949 // its new place, accounting for our new scroll/zoom values, 3950 // and adjust its textsize. 3951 boolean onScreen; 3952 switch (intersection) { 3953 case FULLY_ON_SCREEN: 3954 onScreen = visibleRect.contains(vBox); 3955 break; 3956 case INTERSECTS_SCREEN: 3957 onScreen = Rect.intersects(visibleRect, vBox); 3958 break; 3959 case ANYWHERE: 3960 onScreen = true; 3961 break; 3962 default: 3963 throw new AssertionError( 3964 "invalid parameter passed to didUpdateWebTextViewDimensions"); 3965 } 3966 if (onScreen) { 3967 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3968 vBox.height()); 3969 mWebTextView.updateTextSize(); 3970 updateWebTextViewPadding(); 3971 return true; 3972 } else { 3973 // The textfield is now off screen. The user probably 3974 // was not zooming to see the textfield better. Remove 3975 // the WebTextView. If the user types a key, and the 3976 // textfield is still in focus, we will reconstruct 3977 // the WebTextView and scroll it back on screen. 3978 mWebTextView.remove(); 3979 return false; 3980 } 3981 } 3982 3983 void setBaseLayer(int layer, Rect invalRect) { 3984 if (mNativeClass == 0) 3985 return; 3986 if (invalRect == null) { 3987 Rect rect = new Rect(0, 0, mContentWidth, mContentHeight); 3988 nativeSetBaseLayer(layer, rect); 3989 } else { 3990 nativeSetBaseLayer(layer, invalRect); 3991 } 3992 } 3993 3994 private void onZoomAnimationStart() { 3995 // If it is in password mode, turn it off so it does not draw misplaced. 3996 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3997 mWebTextView.setInPassword(false); 3998 } 3999 } 4000 4001 private void onZoomAnimationEnd() { 4002 // adjust the edit text view if needed 4003 if (inEditingMode() && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN) 4004 && nativeFocusCandidateIsPassword()) { 4005 // If it is a password field, start drawing the WebTextView once 4006 // again. 4007 mWebTextView.setInPassword(true); 4008 } 4009 } 4010 4011 void onFixedLengthZoomAnimationStart() { 4012 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4013 onZoomAnimationStart(); 4014 } 4015 4016 void onFixedLengthZoomAnimationEnd() { 4017 if (!mSelectingText) { 4018 WebViewCore.resumeUpdatePicture(mWebViewCore); 4019 } 4020 onZoomAnimationEnd(); 4021 } 4022 4023 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4024 Paint.DITHER_FLAG | 4025 Paint.SUBPIXEL_TEXT_FLAG; 4026 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4027 Paint.DITHER_FLAG; 4028 4029 private final DrawFilter mZoomFilter = 4030 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4031 // If we need to trade better quality for speed, set mScrollFilter to null 4032 private final DrawFilter mScrollFilter = 4033 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4034 4035 private void drawCoreAndCursorRing(Canvas canvas, int color, 4036 boolean drawCursorRing) { 4037 if (mDrawHistory) { 4038 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4039 canvas.drawPicture(mHistoryPicture); 4040 return; 4041 } 4042 if (mNativeClass == 0) return; 4043 4044 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4045 boolean animateScroll = ((!mScroller.isFinished() 4046 || mVelocityTracker != null) 4047 && (mTouchMode != TOUCH_DRAG_MODE || 4048 mHeldMotionless != MOTIONLESS_TRUE)) 4049 || mDeferTouchMode == TOUCH_DRAG_MODE; 4050 if (mTouchMode == TOUCH_DRAG_MODE) { 4051 if (mHeldMotionless == MOTIONLESS_PENDING) { 4052 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4053 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4054 mHeldMotionless = MOTIONLESS_FALSE; 4055 } 4056 if (mHeldMotionless == MOTIONLESS_FALSE) { 4057 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4058 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4059 mHeldMotionless = MOTIONLESS_PENDING; 4060 } 4061 } 4062 if (animateZoom) { 4063 mZoomManager.animateZoom(canvas); 4064 } else { 4065 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4066 } 4067 4068 boolean UIAnimationsRunning = false; 4069 // Currently for each draw we compute the animation values; 4070 // We may in the future decide to do that independently. 4071 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4072 UIAnimationsRunning = true; 4073 // If we have unfinished (or unstarted) animations, 4074 // we ask for a repaint. 4075 invalidate(); 4076 } 4077 4078 // decide which adornments to draw 4079 int extras = DRAW_EXTRAS_NONE; 4080 if (mFindIsUp) { 4081 extras = DRAW_EXTRAS_FIND; 4082 } else if (mSelectingText) { 4083 extras = DRAW_EXTRAS_SELECTION; 4084 nativeSetSelectionPointer(mDrawSelectionPointer, 4085 mZoomManager.getInvScale(), 4086 mSelectX, mSelectY - getTitleHeight()); 4087 } else if (drawCursorRing) { 4088 extras = DRAW_EXTRAS_CURSOR_RING; 4089 } 4090 if (DebugFlags.WEB_VIEW) { 4091 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4092 + " mSelectingText=" + mSelectingText 4093 + " nativePageShouldHandleShiftAndArrows()=" 4094 + nativePageShouldHandleShiftAndArrows() 4095 + " animateZoom=" + animateZoom 4096 + " extras=" + extras); 4097 } 4098 4099 if (canvas.isHardwareAccelerated()) { 4100 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4101 getScale(), extras); 4102 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4103 } else { 4104 DrawFilter df = null; 4105 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4106 df = mZoomFilter; 4107 } else if (animateScroll) { 4108 df = mScrollFilter; 4109 } 4110 canvas.setDrawFilter(df); 4111 // XXX: Revisit splitting content. Right now it causes a 4112 // synchronization problem with layers. 4113 int content = nativeDraw(canvas, color, extras, false); 4114 canvas.setDrawFilter(null); 4115 if (content != 0) { 4116 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4117 } 4118 } 4119 4120 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4121 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4122 mTouchMode = TOUCH_SHORTPRESS_MODE; 4123 } 4124 } 4125 if (mFocusSizeChanged) { 4126 mFocusSizeChanged = false; 4127 // If we are zooming, this will get handled above, when the zoom 4128 // finishes. We also do not need to do this unless the WebTextView 4129 // is showing. 4130 if (!animateZoom && inEditingMode()) { 4131 didUpdateWebTextViewDimensions(ANYWHERE); 4132 } 4133 } 4134 } 4135 4136 // draw history 4137 private boolean mDrawHistory = false; 4138 private Picture mHistoryPicture = null; 4139 private int mHistoryWidth = 0; 4140 private int mHistoryHeight = 0; 4141 4142 // Only check the flag, can be called from WebCore thread 4143 boolean drawHistory() { 4144 return mDrawHistory; 4145 } 4146 4147 int getHistoryPictureWidth() { 4148 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4149 } 4150 4151 // Should only be called in UI thread 4152 void switchOutDrawHistory() { 4153 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4154 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4155 mDrawHistory = false; 4156 mHistoryPicture = null; 4157 invalidate(); 4158 int oldScrollX = mScrollX; 4159 int oldScrollY = mScrollY; 4160 mScrollX = pinLocX(mScrollX); 4161 mScrollY = pinLocY(mScrollY); 4162 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4163 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4164 } else { 4165 sendOurVisibleRect(); 4166 } 4167 } 4168 } 4169 4170 WebViewCore.CursorData cursorData() { 4171 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4172 result.mMoveGeneration = nativeMoveGeneration(); 4173 result.mFrame = nativeCursorFramePointer(); 4174 Point position = nativeCursorPosition(); 4175 result.mX = position.x; 4176 result.mY = position.y; 4177 return result; 4178 } 4179 4180 /** 4181 * Delete text from start to end in the focused textfield. If there is no 4182 * focus, or if start == end, silently fail. If start and end are out of 4183 * order, swap them. 4184 * @param start Beginning of selection to delete. 4185 * @param end End of selection to delete. 4186 */ 4187 /* package */ void deleteSelection(int start, int end) { 4188 mTextGeneration++; 4189 WebViewCore.TextSelectionData data 4190 = new WebViewCore.TextSelectionData(start, end); 4191 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4192 data); 4193 } 4194 4195 /** 4196 * Set the selection to (start, end) in the focused textfield. If start and 4197 * end are out of order, swap them. 4198 * @param start Beginning of selection. 4199 * @param end End of selection. 4200 */ 4201 /* package */ void setSelection(int start, int end) { 4202 if (mWebViewCore != null) { 4203 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4204 } 4205 } 4206 4207 @Override 4208 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4209 InputConnection connection = super.onCreateInputConnection(outAttrs); 4210 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4211 return connection; 4212 } 4213 4214 /** 4215 * Called in response to a message from webkit telling us that the soft 4216 * keyboard should be launched. 4217 */ 4218 private void displaySoftKeyboard(boolean isTextView) { 4219 InputMethodManager imm = (InputMethodManager) 4220 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4221 4222 // bring it back to the default level scale so that user can enter text 4223 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4224 if (zoom) { 4225 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4226 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4227 } 4228 if (isTextView) { 4229 rebuildWebTextView(); 4230 if (inEditingMode()) { 4231 imm.showSoftInput(mWebTextView, 0); 4232 if (zoom) { 4233 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4234 } 4235 return; 4236 } 4237 } 4238 // Used by plugins and contentEditable. 4239 // Also used if the navigation cache is out of date, and 4240 // does not recognize that a textfield is in focus. In that 4241 // case, use WebView as the targeted view. 4242 // see http://b/issue?id=2457459 4243 imm.showSoftInput(this, 0); 4244 } 4245 4246 // Called by WebKit to instruct the UI to hide the keyboard 4247 private void hideSoftKeyboard() { 4248 InputMethodManager imm = InputMethodManager.peekInstance(); 4249 if (imm != null && (imm.isActive(this) 4250 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4251 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4252 } 4253 } 4254 4255 /* 4256 * This method checks the current focus and cursor and potentially rebuilds 4257 * mWebTextView to have the appropriate properties, such as password, 4258 * multiline, and what text it contains. It also removes it if necessary. 4259 */ 4260 /* package */ void rebuildWebTextView() { 4261 // If the WebView does not have focus, do nothing until it gains focus. 4262 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4263 return; 4264 } 4265 boolean alreadyThere = inEditingMode(); 4266 // inEditingMode can only return true if mWebTextView is non-null, 4267 // so we can safely call remove() if (alreadyThere) 4268 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4269 if (alreadyThere) { 4270 mWebTextView.remove(); 4271 } 4272 return; 4273 } 4274 // At this point, we know we have found an input field, so go ahead 4275 // and create the WebTextView if necessary. 4276 if (mWebTextView == null) { 4277 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4278 // Initialize our generation number. 4279 mTextGeneration = 0; 4280 } 4281 mWebTextView.updateTextSize(); 4282 Rect visibleRect = new Rect(); 4283 calcOurContentVisibleRect(visibleRect); 4284 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4285 // should be in content coordinates. 4286 Rect bounds = nativeFocusCandidateNodeBounds(); 4287 Rect vBox = contentToViewRect(bounds); 4288 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4289 if (!Rect.intersects(bounds, visibleRect)) { 4290 revealSelection(); 4291 } 4292 String text = nativeFocusCandidateText(); 4293 int nodePointer = nativeFocusCandidatePointer(); 4294 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4295 // It is possible that we have the same textfield, but it has moved, 4296 // i.e. In the case of opening/closing the screen. 4297 // In that case, we need to set the dimensions, but not the other 4298 // aspects. 4299 // If the text has been changed by webkit, update it. However, if 4300 // there has been more UI text input, ignore it. We will receive 4301 // another update when that text is recognized. 4302 if (text != null && !text.equals(mWebTextView.getText().toString()) 4303 && nativeTextGeneration() == mTextGeneration) { 4304 mWebTextView.setTextAndKeepSelection(text); 4305 } 4306 } else { 4307 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4308 Gravity.RIGHT : Gravity.NO_GRAVITY); 4309 // This needs to be called before setType, which may call 4310 // requestFormData, and it needs to have the correct nodePointer. 4311 mWebTextView.setNodePointer(nodePointer); 4312 mWebTextView.setType(nativeFocusCandidateType()); 4313 updateWebTextViewPadding(); 4314 if (null == text) { 4315 if (DebugFlags.WEB_VIEW) { 4316 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4317 } 4318 text = ""; 4319 } 4320 mWebTextView.setTextAndKeepSelection(text); 4321 InputMethodManager imm = InputMethodManager.peekInstance(); 4322 if (imm != null && imm.isActive(mWebTextView)) { 4323 imm.restartInput(mWebTextView); 4324 } 4325 } 4326 if (isFocused()) { 4327 mWebTextView.requestFocus(); 4328 } 4329 } 4330 4331 /** 4332 * Update the padding of mWebTextView based on the native textfield/textarea 4333 */ 4334 void updateWebTextViewPadding() { 4335 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4336 if (paddingRect != null) { 4337 // Use contentToViewDimension since these are the dimensions of 4338 // the padding. 4339 mWebTextView.setPadding( 4340 contentToViewDimension(paddingRect.left), 4341 contentToViewDimension(paddingRect.top), 4342 contentToViewDimension(paddingRect.right), 4343 contentToViewDimension(paddingRect.bottom)); 4344 } 4345 } 4346 4347 /** 4348 * Tell webkit to put the cursor on screen. 4349 */ 4350 /* package */ void revealSelection() { 4351 if (mWebViewCore != null) { 4352 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4353 } 4354 } 4355 4356 /** 4357 * Called by WebTextView to find saved form data associated with the 4358 * textfield 4359 * @param name Name of the textfield. 4360 * @param nodePointer Pointer to the node of the textfield, so it can be 4361 * compared to the currently focused textfield when the data is 4362 * retrieved. 4363 * @param autoFillable true if WebKit has determined this field is part of 4364 * a form that can be auto filled. 4365 * @param autoComplete true if the attribute "autocomplete" is set to true 4366 * on the textfield. 4367 */ 4368 /* package */ void requestFormData(String name, int nodePointer, 4369 boolean autoFillable, boolean autoComplete) { 4370 if (mWebViewCore.getSettings().getSaveFormData()) { 4371 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4372 update.arg1 = nodePointer; 4373 RequestFormData updater = new RequestFormData(name, getUrl(), 4374 update, autoFillable, autoComplete); 4375 Thread t = new Thread(updater); 4376 t.start(); 4377 } 4378 } 4379 4380 /** 4381 * Pass a message to find out the <label> associated with the <input> 4382 * identified by nodePointer 4383 * @param framePointer Pointer to the frame containing the <input> node 4384 * @param nodePointer Pointer to the node for which a <label> is desired. 4385 */ 4386 /* package */ void requestLabel(int framePointer, int nodePointer) { 4387 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4388 nodePointer); 4389 } 4390 4391 /* 4392 * This class requests an Adapter for the WebTextView which shows past 4393 * entries stored in the database. It is a Runnable so that it can be done 4394 * in its own thread, without slowing down the UI. 4395 */ 4396 private class RequestFormData implements Runnable { 4397 private String mName; 4398 private String mUrl; 4399 private Message mUpdateMessage; 4400 private boolean mAutoFillable; 4401 private boolean mAutoComplete; 4402 4403 public RequestFormData(String name, String url, Message msg, 4404 boolean autoFillable, boolean autoComplete) { 4405 mName = name; 4406 mUrl = url; 4407 mUpdateMessage = msg; 4408 mAutoFillable = autoFillable; 4409 mAutoComplete = autoComplete; 4410 } 4411 4412 public void run() { 4413 ArrayList<String> pastEntries = new ArrayList<String>(); 4414 4415 if (mAutoFillable) { 4416 // Note that code inside the adapter click handler in WebTextView depends 4417 // on the AutoFill item being at the top of the drop down list. If you change 4418 // the order, make sure to do it there too! 4419 WebSettings settings = getSettings(); 4420 if (settings != null && settings.getAutoFillProfile() != null) { 4421 pastEntries.add(getResources().getText( 4422 com.android.internal.R.string.autofill_this_form).toString() + 4423 " " + 4424 mAutoFillData.getPreviewString()); 4425 mWebTextView.setAutoFillProfileIsSet(true); 4426 } else { 4427 // There is no autofill profile set up yet, so add an option that 4428 // will invite the user to set their profile up. 4429 pastEntries.add(getResources().getText( 4430 com.android.internal.R.string.setup_autofill).toString()); 4431 mWebTextView.setAutoFillProfileIsSet(false); 4432 } 4433 } 4434 4435 if (mAutoComplete) { 4436 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4437 } 4438 4439 if (pastEntries.size() > 0) { 4440 AutoCompleteAdapter adapter = new 4441 AutoCompleteAdapter(mContext, pastEntries); 4442 mUpdateMessage.obj = adapter; 4443 mUpdateMessage.sendToTarget(); 4444 } 4445 } 4446 } 4447 4448 /** 4449 * Dump the display tree to "/sdcard/displayTree.txt" 4450 * 4451 * @hide debug only 4452 */ 4453 public void dumpDisplayTree() { 4454 nativeDumpDisplayTree(getUrl()); 4455 } 4456 4457 /** 4458 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4459 * "/sdcard/domTree.txt" 4460 * 4461 * @hide debug only 4462 */ 4463 public void dumpDomTree(boolean toFile) { 4464 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4465 } 4466 4467 /** 4468 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4469 * to "/sdcard/renderTree.txt" 4470 * 4471 * @hide debug only 4472 */ 4473 public void dumpRenderTree(boolean toFile) { 4474 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4475 } 4476 4477 /** 4478 * Called by DRT on UI thread, need to proxy to WebCore thread. 4479 * 4480 * @hide debug only 4481 */ 4482 public void useMockDeviceOrientation() { 4483 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4484 } 4485 4486 /** 4487 * Called by DRT on WebCore thread. 4488 * 4489 * @hide debug only 4490 */ 4491 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4492 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4493 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4494 canProvideGamma, gamma); 4495 } 4496 4497 /** 4498 * Dump the V8 counters to standard output. 4499 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4500 * true. Otherwise, this will do nothing. 4501 * 4502 * @hide debug only 4503 */ 4504 public void dumpV8Counters() { 4505 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4506 } 4507 4508 // This is used to determine long press with the center key. Does not 4509 // affect long press with the trackball/touch. 4510 private boolean mGotCenterDown = false; 4511 4512 @Override 4513 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4514 // send complex characters to webkit for use by JS and plugins 4515 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4516 // pass the key to DOM 4517 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4518 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4519 // return true as DOM handles the key 4520 return true; 4521 } 4522 return false; 4523 } 4524 4525 private boolean isEnterActionKey(int keyCode) { 4526 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4527 || keyCode == KeyEvent.KEYCODE_ENTER 4528 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4529 } 4530 4531 @Override 4532 public boolean onKeyDown(int keyCode, KeyEvent event) { 4533 if (DebugFlags.WEB_VIEW) { 4534 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4535 + "keyCode=" + keyCode 4536 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4537 } 4538 4539 // don't implement accelerator keys here; defer to host application 4540 if (event.isCtrlPressed()) { 4541 return false; 4542 } 4543 4544 if (mNativeClass == 0) { 4545 return false; 4546 } 4547 4548 // do this hack up front, so it always works, regardless of touch-mode 4549 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4550 mAutoRedraw = !mAutoRedraw; 4551 if (mAutoRedraw) { 4552 invalidate(); 4553 } 4554 return true; 4555 } 4556 4557 // Bubble up the key event if 4558 // 1. it is a system key; or 4559 // 2. the host application wants to handle it; 4560 if (event.isSystem() 4561 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4562 return false; 4563 } 4564 4565 // accessibility support 4566 if (accessibilityScriptInjected()) { 4567 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4568 // if an accessibility script is injected we delegate to it the key handling. 4569 // this script is a screen reader which is a fully fledged solution for blind 4570 // users to navigate in and interact with web pages. 4571 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4572 return true; 4573 } else { 4574 // Clean up if accessibility was disabled after loading the current URL. 4575 mAccessibilityScriptInjected = false; 4576 } 4577 } else if (mAccessibilityInjector != null) { 4578 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4579 if (mAccessibilityInjector.onKeyEvent(event)) { 4580 // if an accessibility injector is present (no JavaScript enabled or the site 4581 // opts out injecting our JavaScript screen reader) we let it decide whether 4582 // to act on and consume the event. 4583 return true; 4584 } 4585 } else { 4586 // Clean up if accessibility was disabled after loading the current URL. 4587 mAccessibilityInjector = null; 4588 } 4589 } 4590 4591 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4592 if (event.hasNoModifiers()) { 4593 pageUp(false); 4594 return true; 4595 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4596 pageUp(true); 4597 return true; 4598 } 4599 } 4600 4601 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4602 if (event.hasNoModifiers()) { 4603 pageDown(false); 4604 return true; 4605 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4606 pageDown(true); 4607 return true; 4608 } 4609 } 4610 4611 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4612 pageUp(true); 4613 return true; 4614 } 4615 4616 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4617 pageDown(true); 4618 return true; 4619 } 4620 4621 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4622 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4623 switchOutDrawHistory(); 4624 if (nativePageShouldHandleShiftAndArrows()) { 4625 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4626 return true; 4627 } 4628 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4629 switch (keyCode) { 4630 case KeyEvent.KEYCODE_DPAD_UP: 4631 pageUp(true); 4632 return true; 4633 case KeyEvent.KEYCODE_DPAD_DOWN: 4634 pageDown(true); 4635 return true; 4636 case KeyEvent.KEYCODE_DPAD_LEFT: 4637 nativeClearCursor(); // start next trackball movement from page edge 4638 return pinScrollTo(0, mScrollY, true, 0); 4639 case KeyEvent.KEYCODE_DPAD_RIGHT: 4640 nativeClearCursor(); // start next trackball movement from page edge 4641 return pinScrollTo(mContentWidth, mScrollY, true, 0); 4642 } 4643 } 4644 if (mSelectingText) { 4645 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4646 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4647 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4648 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4649 int multiplier = event.getRepeatCount() + 1; 4650 moveSelection(xRate * multiplier, yRate * multiplier); 4651 return true; 4652 } 4653 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4654 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4655 return true; 4656 } 4657 // Bubble up the key event as WebView doesn't handle it 4658 return false; 4659 } 4660 4661 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4662 switchOutDrawHistory(); 4663 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 4664 || nativeCursorWantsKeyEvents(); 4665 if (event.getRepeatCount() == 0) { 4666 if (mSelectingText) { 4667 return true; // discard press if copy in progress 4668 } 4669 mGotCenterDown = true; 4670 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4671 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4672 // Already checked mNativeClass, so we do not need to check it 4673 // again. 4674 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4675 if (!wantsKeyEvents) return true; 4676 } 4677 // Bubble up the key event as WebView doesn't handle it 4678 if (!wantsKeyEvents) return false; 4679 } 4680 4681 if (getSettings().getNavDump()) { 4682 switch (keyCode) { 4683 case KeyEvent.KEYCODE_4: 4684 dumpDisplayTree(); 4685 break; 4686 case KeyEvent.KEYCODE_5: 4687 case KeyEvent.KEYCODE_6: 4688 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4689 break; 4690 case KeyEvent.KEYCODE_7: 4691 case KeyEvent.KEYCODE_8: 4692 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4693 break; 4694 case KeyEvent.KEYCODE_9: 4695 nativeInstrumentReport(); 4696 return true; 4697 } 4698 } 4699 4700 if (nativeCursorIsTextInput()) { 4701 // This message will put the node in focus, for the DOM's notion 4702 // of focus. 4703 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 4704 nativeCursorNodePointer()); 4705 // This will bring up the WebTextView and put it in focus, for 4706 // our view system's notion of focus 4707 rebuildWebTextView(); 4708 // Now we need to pass the event to it 4709 if (inEditingMode()) { 4710 mWebTextView.setDefaultSelection(); 4711 return mWebTextView.dispatchKeyEvent(event); 4712 } 4713 } else if (nativeHasFocusNode()) { 4714 // In this case, the cursor is not on a text input, but the focus 4715 // might be. Check it, and if so, hand over to the WebTextView. 4716 rebuildWebTextView(); 4717 if (inEditingMode()) { 4718 mWebTextView.setDefaultSelection(); 4719 return mWebTextView.dispatchKeyEvent(event); 4720 } 4721 } 4722 4723 // TODO: should we pass all the keys to DOM or check the meta tag 4724 if (nativeCursorWantsKeyEvents() || true) { 4725 // pass the key to DOM 4726 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4727 // return true as DOM handles the key 4728 return true; 4729 } 4730 4731 // Bubble up the key event as WebView doesn't handle it 4732 return false; 4733 } 4734 4735 @Override 4736 public boolean onKeyUp(int keyCode, KeyEvent event) { 4737 if (DebugFlags.WEB_VIEW) { 4738 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4739 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4740 } 4741 4742 if (mNativeClass == 0) { 4743 return false; 4744 } 4745 4746 // special CALL handling when cursor node's href is "tel:XXX" 4747 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4748 String text = nativeCursorText(); 4749 if (!nativeCursorIsTextInput() && text != null 4750 && text.startsWith(SCHEME_TEL)) { 4751 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4752 getContext().startActivity(intent); 4753 return true; 4754 } 4755 } 4756 4757 // Bubble up the key event if 4758 // 1. it is a system key; or 4759 // 2. the host application wants to handle it; 4760 if (event.isSystem() 4761 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4762 return false; 4763 } 4764 4765 // accessibility support 4766 if (accessibilityScriptInjected()) { 4767 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4768 // if an accessibility script is injected we delegate to it the key handling. 4769 // this script is a screen reader which is a fully fledged solution for blind 4770 // users to navigate in and interact with web pages. 4771 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4772 return true; 4773 } else { 4774 // Clean up if accessibility was disabled after loading the current URL. 4775 mAccessibilityScriptInjected = false; 4776 } 4777 } else if (mAccessibilityInjector != null) { 4778 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4779 if (mAccessibilityInjector.onKeyEvent(event)) { 4780 // if an accessibility injector is present (no JavaScript enabled or the site 4781 // opts out injecting our JavaScript screen reader) we let it decide whether to 4782 // act on and consume the event. 4783 return true; 4784 } 4785 } else { 4786 // Clean up if accessibility was disabled after loading the current URL. 4787 mAccessibilityInjector = null; 4788 } 4789 } 4790 4791 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4792 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4793 if (nativePageShouldHandleShiftAndArrows()) { 4794 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4795 return true; 4796 } 4797 // always handle the navigation keys in the UI thread 4798 // Bubble up the key event as WebView doesn't handle it 4799 return false; 4800 } 4801 4802 if (isEnterActionKey(keyCode)) { 4803 // remove the long press message first 4804 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4805 mGotCenterDown = false; 4806 4807 if (mSelectingText) { 4808 if (mExtendSelection) { 4809 copySelection(); 4810 selectionDone(); 4811 } else { 4812 mExtendSelection = true; 4813 nativeSetExtendSelection(); 4814 invalidate(); // draw the i-beam instead of the arrow 4815 } 4816 return true; // discard press if copy in progress 4817 } 4818 4819 // perform the single click 4820 Rect visibleRect = sendOurVisibleRect(); 4821 // Note that sendOurVisibleRect calls viewToContent, so the 4822 // coordinates should be in content coordinates. 4823 if (!nativeCursorIntersects(visibleRect)) { 4824 return false; 4825 } 4826 WebViewCore.CursorData data = cursorData(); 4827 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4828 playSoundEffect(SoundEffectConstants.CLICK); 4829 if (nativeCursorIsTextInput()) { 4830 rebuildWebTextView(); 4831 centerKeyPressOnTextField(); 4832 if (inEditingMode()) { 4833 mWebTextView.setDefaultSelection(); 4834 } 4835 return true; 4836 } 4837 clearTextEntry(); 4838 nativeShowCursorTimed(); 4839 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4840 return true; 4841 } 4842 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 4843 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4844 nativeCursorNodePointer()); 4845 return true; 4846 } 4847 } 4848 4849 // TODO: should we pass all the keys to DOM or check the meta tag 4850 if (nativeCursorWantsKeyEvents() || true) { 4851 // pass the key to DOM 4852 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4853 // return true as DOM handles the key 4854 return true; 4855 } 4856 4857 // Bubble up the key event as WebView doesn't handle it 4858 return false; 4859 } 4860 4861 /* 4862 * Enter selecting text mode. Returns true if the WebView is now in 4863 * selecting text mode (including if it was already in that mode, and this 4864 * method did nothing). 4865 */ 4866 private boolean setUpSelect() { 4867 if (0 == mNativeClass) return false; // client isn't initialized 4868 if (inFullScreenMode()) return false; 4869 if (mSelectingText) return true; 4870 mExtendSelection = false; 4871 mSelectingText = mDrawSelectionPointer = true; 4872 // don't let the picture change during text selection 4873 WebViewCore.pauseUpdatePicture(mWebViewCore); 4874 nativeResetSelection(); 4875 if (nativeHasCursorNode()) { 4876 Rect rect = nativeCursorNodeBounds(); 4877 mSelectX = contentToViewX(rect.left); 4878 mSelectY = contentToViewY(rect.top); 4879 } else if (mLastTouchY > getVisibleTitleHeight()) { 4880 mSelectX = mScrollX + mLastTouchX; 4881 mSelectY = mScrollY + mLastTouchY; 4882 } else { 4883 mSelectX = mScrollX + getViewWidth() / 2; 4884 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4885 } 4886 nativeHideCursor(); 4887 mSelectCallback = new SelectActionModeCallback(); 4888 mSelectCallback.setWebView(this); 4889 if (startActionMode(mSelectCallback) == null) { 4890 // There is no ActionMode, so do not allow the user to modify a 4891 // selection. 4892 selectionDone(); 4893 return false; 4894 } 4895 mMinAutoScrollX = 0; 4896 mMaxAutoScrollX = getViewWidth(); 4897 mMinAutoScrollY = 0; 4898 mMaxAutoScrollY = getViewHeightWithTitle(); 4899 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 4900 viewToContentY(mSelectY), mScrollingLayerRect, 4901 mScrollingLayerBounds); 4902 if (mScrollingLayer != 0) { 4903 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 4904 mMinAutoScrollX = Math.max(mMinAutoScrollX, 4905 contentToViewX(mScrollingLayerBounds.left)); 4906 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 4907 contentToViewX(mScrollingLayerBounds.right)); 4908 } 4909 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 4910 mMinAutoScrollY = Math.max(mMinAutoScrollY, 4911 contentToViewY(mScrollingLayerBounds.top)); 4912 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 4913 contentToViewY(mScrollingLayerBounds.bottom)); 4914 } 4915 } 4916 mMinAutoScrollX += SELECT_SCROLL; 4917 mMaxAutoScrollX -= SELECT_SCROLL; 4918 mMinAutoScrollY += SELECT_SCROLL; 4919 mMaxAutoScrollY -= SELECT_SCROLL; 4920 return true; 4921 } 4922 4923 /** 4924 * Use this method to put the WebView into text selection mode. 4925 * Do not rely on this functionality; it will be deprecated in the future. 4926 */ 4927 public void emulateShiftHeld() { 4928 setUpSelect(); 4929 } 4930 4931 /** 4932 * Select all of the text in this WebView. 4933 * 4934 * @hide pending API council approval. 4935 */ 4936 public void selectAll() { 4937 if (0 == mNativeClass) return; // client isn't initialized 4938 if (inFullScreenMode()) return; 4939 if (!mSelectingText) { 4940 // retrieve a point somewhere within the text 4941 Point select = nativeSelectableText(); 4942 if (!selectText(select.x, select.y)) return; 4943 } 4944 nativeSelectAll(); 4945 mDrawSelectionPointer = false; 4946 mExtendSelection = true; 4947 invalidate(); 4948 } 4949 4950 /** 4951 * Called when the selection has been removed. 4952 */ 4953 void selectionDone() { 4954 if (mSelectingText) { 4955 mSelectingText = false; 4956 // finish is idempotent, so this is fine even if selectionDone was 4957 // called by mSelectCallback.onDestroyActionMode 4958 mSelectCallback.finish(); 4959 mSelectCallback = null; 4960 WebViewCore.resumePriority(); 4961 WebViewCore.resumeUpdatePicture(mWebViewCore); 4962 invalidate(); // redraw without selection 4963 mAutoScrollX = 0; 4964 mAutoScrollY = 0; 4965 mSentAutoScrollMessage = false; 4966 } 4967 } 4968 4969 /** 4970 * Copy the selection to the clipboard 4971 * 4972 * @hide pending API council approval. 4973 */ 4974 public boolean copySelection() { 4975 boolean copiedSomething = false; 4976 String selection = getSelection(); 4977 if (selection != null && selection != "") { 4978 if (DebugFlags.WEB_VIEW) { 4979 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4980 } 4981 Toast.makeText(mContext 4982 , com.android.internal.R.string.text_copied 4983 , Toast.LENGTH_SHORT).show(); 4984 copiedSomething = true; 4985 ClipboardManager cm = (ClipboardManager)getContext() 4986 .getSystemService(Context.CLIPBOARD_SERVICE); 4987 cm.setText(selection); 4988 } 4989 invalidate(); // remove selection region and pointer 4990 return copiedSomething; 4991 } 4992 4993 /** 4994 * Returns the currently highlighted text as a string. 4995 */ 4996 String getSelection() { 4997 if (mNativeClass == 0) return ""; 4998 return nativeGetSelection(); 4999 } 5000 5001 @Override 5002 protected void onAttachedToWindow() { 5003 super.onAttachedToWindow(); 5004 if (hasWindowFocus()) setActive(true); 5005 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5006 if (treeObserver != null) { 5007 if (mGlobalLayoutListener == null) { 5008 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5009 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5010 } 5011 if (mScrollChangedListener == null) { 5012 mScrollChangedListener = new InnerScrollChangedListener(); 5013 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5014 } 5015 } 5016 5017 addAccessibilityApisToJavaScript(); 5018 } 5019 5020 @Override 5021 protected void onDetachedFromWindow() { 5022 clearHelpers(); 5023 mZoomManager.dismissZoomPicker(); 5024 if (hasWindowFocus()) setActive(false); 5025 5026 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5027 if (treeObserver != null) { 5028 if (mGlobalLayoutListener != null) { 5029 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5030 mGlobalLayoutListener = null; 5031 } 5032 if (mScrollChangedListener != null) { 5033 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5034 mScrollChangedListener = null; 5035 } 5036 } 5037 5038 removeAccessibilityApisFromJavaScript(); 5039 5040 super.onDetachedFromWindow(); 5041 } 5042 5043 @Override 5044 protected void onVisibilityChanged(View changedView, int visibility) { 5045 super.onVisibilityChanged(changedView, visibility); 5046 // The zoomManager may be null if the webview is created from XML that 5047 // specifies the view's visibility param as not visible (see http://b/2794841) 5048 if (visibility != View.VISIBLE && mZoomManager != null) { 5049 mZoomManager.dismissZoomPicker(); 5050 } 5051 } 5052 5053 /** 5054 * @deprecated WebView no longer needs to implement 5055 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5056 */ 5057 @Deprecated 5058 public void onChildViewAdded(View parent, View child) {} 5059 5060 /** 5061 * @deprecated WebView no longer needs to implement 5062 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5063 */ 5064 @Deprecated 5065 public void onChildViewRemoved(View p, View child) {} 5066 5067 /** 5068 * @deprecated WebView should not have implemented 5069 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 5070 * does nothing now. 5071 */ 5072 @Deprecated 5073 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5074 } 5075 5076 void setActive(boolean active) { 5077 if (active) { 5078 if (hasFocus()) { 5079 // If our window regained focus, and we have focus, then begin 5080 // drawing the cursor ring 5081 mDrawCursorRing = true; 5082 setFocusControllerActive(true); 5083 if (mNativeClass != 0) { 5084 nativeRecordButtons(true, false, true); 5085 } 5086 } else { 5087 if (!inEditingMode()) { 5088 // If our window gained focus, but we do not have it, do not 5089 // draw the cursor ring. 5090 mDrawCursorRing = false; 5091 setFocusControllerActive(false); 5092 } 5093 // We do not call nativeRecordButtons here because we assume 5094 // that when we lost focus, or window focus, it got called with 5095 // false for the first parameter 5096 } 5097 } else { 5098 if (!mZoomManager.isZoomPickerVisible()) { 5099 /* 5100 * The external zoom controls come in their own window, so our 5101 * window loses focus. Our policy is to not draw the cursor ring 5102 * if our window is not focused, but this is an exception since 5103 * the user can still navigate the web page with the zoom 5104 * controls showing. 5105 */ 5106 mDrawCursorRing = false; 5107 } 5108 mGotKeyDown = false; 5109 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5110 mTouchMode = TOUCH_DONE_MODE; 5111 if (mNativeClass != 0) { 5112 nativeRecordButtons(false, false, true); 5113 } 5114 setFocusControllerActive(false); 5115 } 5116 invalidate(); 5117 } 5118 5119 // To avoid drawing the cursor ring, and remove the TextView when our window 5120 // loses focus. 5121 @Override 5122 public void onWindowFocusChanged(boolean hasWindowFocus) { 5123 setActive(hasWindowFocus); 5124 if (hasWindowFocus) { 5125 JWebCoreJavaBridge.setActiveWebView(this); 5126 } else { 5127 JWebCoreJavaBridge.removeActiveWebView(this); 5128 } 5129 super.onWindowFocusChanged(hasWindowFocus); 5130 } 5131 5132 /* 5133 * Pass a message to WebCore Thread, telling the WebCore::Page's 5134 * FocusController to be "inactive" so that it will 5135 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5136 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5137 */ 5138 /* package */ void setFocusControllerActive(boolean active) { 5139 if (mWebViewCore == null) return; 5140 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5141 // Need to send this message after the document regains focus. 5142 if (active && mListBoxMessage != null) { 5143 mWebViewCore.sendMessage(mListBoxMessage); 5144 mListBoxMessage = null; 5145 } 5146 } 5147 5148 @Override 5149 protected void onFocusChanged(boolean focused, int direction, 5150 Rect previouslyFocusedRect) { 5151 if (DebugFlags.WEB_VIEW) { 5152 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5153 } 5154 if (focused) { 5155 // When we regain focus, if we have window focus, resume drawing 5156 // the cursor ring 5157 if (hasWindowFocus()) { 5158 mDrawCursorRing = true; 5159 if (mNativeClass != 0) { 5160 nativeRecordButtons(true, false, true); 5161 } 5162 setFocusControllerActive(true); 5163 //} else { 5164 // The WebView has gained focus while we do not have 5165 // windowfocus. When our window lost focus, we should have 5166 // called nativeRecordButtons(false...) 5167 } 5168 } else { 5169 // When we lost focus, unless focus went to the TextView (which is 5170 // true if we are in editing mode), stop drawing the cursor ring. 5171 if (!inEditingMode()) { 5172 mDrawCursorRing = false; 5173 if (mNativeClass != 0) { 5174 nativeRecordButtons(false, false, true); 5175 } 5176 setFocusControllerActive(false); 5177 } 5178 mGotKeyDown = false; 5179 } 5180 5181 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5182 } 5183 5184 void setGLRectViewport() { 5185 // Use the getGlobalVisibleRect() to get the intersection among the parents 5186 // visible == false means we're clipped - send a null rect down to indicate that 5187 // we should not draw 5188 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5189 if (visible) { 5190 // Then need to invert the Y axis, just for GL 5191 View rootView = getRootView(); 5192 int rootViewHeight = rootView.getHeight(); 5193 int savedWebViewBottom = mGLRectViewport.bottom; 5194 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeight(); 5195 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5196 mGLViewportEmpty = false; 5197 } else { 5198 mGLViewportEmpty = true; 5199 } 5200 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport); 5201 } 5202 5203 /** 5204 * @hide 5205 */ 5206 @Override 5207 protected boolean setFrame(int left, int top, int right, int bottom) { 5208 boolean changed = super.setFrame(left, top, right, bottom); 5209 if (!changed && mHeightCanMeasure) { 5210 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5211 // in WebViewCore after we get the first layout. We do call 5212 // requestLayout() when we get contentSizeChanged(). But the View 5213 // system won't call onSizeChanged if the dimension is not changed. 5214 // In this case, we need to call sendViewSizeZoom() explicitly to 5215 // notify the WebKit about the new dimensions. 5216 sendViewSizeZoom(false); 5217 } 5218 setGLRectViewport(); 5219 return changed; 5220 } 5221 5222 @Override 5223 protected void onSizeChanged(int w, int h, int ow, int oh) { 5224 super.onSizeChanged(w, h, ow, oh); 5225 5226 // adjust the max viewport width depending on the view dimensions. This 5227 // is to ensure the scaling is not going insane. So do not shrink it if 5228 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5229 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5230 if (newMaxViewportWidth > sMaxViewportWidth) { 5231 sMaxViewportWidth = newMaxViewportWidth; 5232 } 5233 5234 mZoomManager.onSizeChanged(w, h, ow, oh); 5235 } 5236 5237 @Override 5238 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5239 super.onScrollChanged(l, t, oldl, oldt); 5240 if (!mInOverScrollMode) { 5241 sendOurVisibleRect(); 5242 // update WebKit if visible title bar height changed. The logic is same 5243 // as getVisibleTitleHeight. 5244 int titleHeight = getTitleHeight(); 5245 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5246 sendViewSizeZoom(false); 5247 } 5248 } 5249 } 5250 5251 @Override 5252 public boolean dispatchKeyEvent(KeyEvent event) { 5253 boolean dispatch = true; 5254 5255 // Textfields, plugins, and contentEditable nodes need to receive the 5256 // shift up key even if another key was released while the shift key 5257 // was held down. 5258 boolean inEditingMode = inEditingMode(); 5259 if (!inEditingMode && (mNativeClass == 0 5260 || !nativePageShouldHandleShiftAndArrows())) { 5261 if (event.getAction() == KeyEvent.ACTION_DOWN) { 5262 mGotKeyDown = true; 5263 } else { 5264 if (!mGotKeyDown && event.getAction() != KeyEvent.ACTION_MULTIPLE) { 5265 /* 5266 * We got a key up for which we were not the recipient of 5267 * the original key down. Don't give it to the view. 5268 */ 5269 dispatch = false; 5270 } 5271 mGotKeyDown = false; 5272 } 5273 } 5274 5275 if (dispatch) { 5276 if (inEditingMode) { 5277 // Ensure that the WebTextView gets the event, even if it does 5278 // not currently have a bounds. 5279 return mWebTextView.dispatchKeyEvent(event); 5280 } else { 5281 return super.dispatchKeyEvent(event); 5282 } 5283 } else { 5284 // We didn't dispatch, so let something else handle the key 5285 return false; 5286 } 5287 } 5288 5289 // Here are the snap align logic: 5290 // 1. If it starts nearly horizontally or vertically, snap align; 5291 // 2. If there is a dramitic direction change, let it go; 5292 // 3. If there is a same direction back and forth, lock it. 5293 5294 // adjustable parameters 5295 private int mMinLockSnapReverseDistance; 5296 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5297 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5298 5299 private boolean hitFocusedPlugin(int contentX, int contentY) { 5300 if (DebugFlags.WEB_VIEW) { 5301 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5302 Rect r = nativeFocusNodeBounds(); 5303 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5304 + ", " + r.right + ", " + r.bottom + ")"); 5305 } 5306 return nativeFocusIsPlugin() 5307 && nativeFocusNodeBounds().contains(contentX, contentY); 5308 } 5309 5310 private boolean shouldForwardTouchEvent() { 5311 return mFullScreenHolder != null || (mForwardTouchEvents 5312 && !mSelectingText 5313 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 5314 } 5315 5316 private boolean inFullScreenMode() { 5317 return mFullScreenHolder != null; 5318 } 5319 5320 private void dismissFullScreenMode() { 5321 if (inFullScreenMode()) { 5322 mFullScreenHolder.dismiss(); 5323 mFullScreenHolder = null; 5324 } 5325 } 5326 5327 void onPinchToZoomAnimationStart() { 5328 // cancel the single touch handling 5329 cancelTouch(); 5330 onZoomAnimationStart(); 5331 } 5332 5333 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5334 onZoomAnimationEnd(); 5335 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5336 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5337 // as it may trigger the unwanted fling. 5338 mTouchMode = TOUCH_PINCH_DRAG; 5339 mConfirmMove = true; 5340 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5341 } 5342 5343 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5344 // layer is found. 5345 private void startScrollingLayer(float x, float y) { 5346 int contentX = viewToContentX((int) x + mScrollX); 5347 int contentY = viewToContentY((int) y + mScrollY); 5348 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5349 mScrollingLayerRect, mScrollingLayerBounds); 5350 if (mScrollingLayer != 0) { 5351 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5352 } 5353 } 5354 5355 // 1/(density * density) used to compute the distance between points. 5356 // Computed in init(). 5357 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5358 5359 // The distance between two points reported in onTouchEvent scaled by the 5360 // density of the screen. 5361 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5362 5363 @Override 5364 public boolean onTouchEvent(MotionEvent ev) { 5365 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5366 return false; 5367 } 5368 5369 if (DebugFlags.WEB_VIEW) { 5370 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5371 + " mTouchMode=" + mTouchMode 5372 + " numPointers=" + ev.getPointerCount()); 5373 } 5374 5375 int action = ev.getActionMasked(); 5376 if (ev.getPointerCount() > 1) { // Multi-touch 5377 mIsHandlingMultiTouch = true; 5378 5379 // If WebKit already showed no interests in this sequence of events, 5380 // WebView handles them directly. 5381 if (mPreventDefault == PREVENT_DEFAULT_NO && action == MotionEvent.ACTION_MOVE) { 5382 handleMultiTouchInWebView(ev); 5383 } else { 5384 passMultiTouchToWebKit(ev); 5385 } 5386 return true; 5387 } 5388 5389 // Skip ACTION_MOVE for single touch if it's still handling multi-touch. 5390 if (mIsHandlingMultiTouch && action == MotionEvent.ACTION_MOVE) { 5391 return false; 5392 } 5393 5394 return handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 5395 } 5396 5397 /* 5398 * Common code for single touch and multi-touch. 5399 * (x, y) denotes current focus point, which is the touch point for single touch 5400 * and the middle point for multi-touch. 5401 */ 5402 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5403 long eventTime = ev.getEventTime(); 5404 5405 5406 // Due to the touch screen edge effect, a touch closer to the edge 5407 // always snapped to the edge. As getViewWidth() can be different from 5408 // getWidth() due to the scrollbar, adjusting the point to match 5409 // getViewWidth(). Same applied to the height. 5410 x = Math.min(x, getViewWidth() - 1); 5411 y = Math.min(y, getViewHeightWithTitle() - 1); 5412 5413 int deltaX = mLastTouchX - x; 5414 int deltaY = mLastTouchY - y; 5415 int contentX = viewToContentX(x + mScrollX); 5416 int contentY = viewToContentY(y + mScrollY); 5417 5418 switch (action) { 5419 case MotionEvent.ACTION_DOWN: { 5420 mPreventDefault = PREVENT_DEFAULT_NO; 5421 mConfirmMove = false; 5422 mIsHandlingMultiTouch = false; 5423 mInitialHitTestResult = null; 5424 if (!mScroller.isFinished()) { 5425 // stop the current scroll animation, but if this is 5426 // the start of a fling, allow it to add to the current 5427 // fling's velocity 5428 mScroller.abortAnimation(); 5429 mTouchMode = TOUCH_DRAG_START_MODE; 5430 mConfirmMove = true; 5431 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5432 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5433 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5434 if (getSettings().supportTouchOnly()) { 5435 removeTouchHighlight(true); 5436 } 5437 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5438 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5439 } else { 5440 // commit the short press action for the previous tap 5441 doShortPress(); 5442 mTouchMode = TOUCH_INIT_MODE; 5443 mDeferTouchProcess = (!inFullScreenMode() 5444 && mForwardTouchEvents) ? hitFocusedPlugin( 5445 contentX, contentY) : false; 5446 } 5447 } else { // the normal case 5448 mTouchMode = TOUCH_INIT_MODE; 5449 mDeferTouchProcess = (!inFullScreenMode() 5450 && mForwardTouchEvents) ? hitFocusedPlugin( 5451 contentX, contentY) : false; 5452 mWebViewCore.sendMessage( 5453 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5454 if (getSettings().supportTouchOnly()) { 5455 TouchHighlightData data = new TouchHighlightData(); 5456 data.mX = contentX; 5457 data.mY = contentY; 5458 data.mSlop = viewToContentDimension(mNavSlop); 5459 mWebViewCore.sendMessageDelayed( 5460 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5461 ViewConfiguration.getTapTimeout()); 5462 if (DEBUG_TOUCH_HIGHLIGHT) { 5463 if (getSettings().getNavDump()) { 5464 mTouchHighlightX = (int) x + mScrollX; 5465 mTouchHighlightY = (int) y + mScrollY; 5466 mPrivateHandler.postDelayed(new Runnable() { 5467 public void run() { 5468 mTouchHighlightX = mTouchHighlightY = 0; 5469 invalidate(); 5470 } 5471 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5472 } 5473 } 5474 } 5475 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5476 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5477 (eventTime - mLastTouchUpTime), eventTime); 5478 } 5479 if (mSelectingText) { 5480 mDrawSelectionPointer = false; 5481 mSelectionStarted = nativeStartSelection(contentX, contentY); 5482 if (DebugFlags.WEB_VIEW) { 5483 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5484 } 5485 invalidate(); 5486 } 5487 } 5488 // Trigger the link 5489 if (mTouchMode == TOUCH_INIT_MODE 5490 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5491 mPrivateHandler.sendEmptyMessageDelayed( 5492 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5493 mPrivateHandler.sendEmptyMessageDelayed( 5494 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5495 if (inFullScreenMode() || mDeferTouchProcess) { 5496 mPreventDefault = PREVENT_DEFAULT_YES; 5497 } else if (mForwardTouchEvents) { 5498 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5499 } else { 5500 mPreventDefault = PREVENT_DEFAULT_NO; 5501 } 5502 // pass the touch events from UI thread to WebCore thread 5503 if (shouldForwardTouchEvent()) { 5504 TouchEventData ted = new TouchEventData(); 5505 ted.mAction = action; 5506 ted.mIds = new int[1]; 5507 ted.mIds[0] = ev.getPointerId(0); 5508 ted.mPoints = new Point[1]; 5509 ted.mPoints[0] = new Point(contentX, contentY); 5510 ted.mMetaState = ev.getMetaState(); 5511 ted.mReprocess = mDeferTouchProcess; 5512 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5513 if (mDeferTouchProcess) { 5514 // still needs to set them for compute deltaX/Y 5515 mLastTouchX = x; 5516 mLastTouchY = y; 5517 break; 5518 } 5519 if (!inFullScreenMode()) { 5520 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5521 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5522 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5523 action, 0), TAP_TIMEOUT); 5524 } 5525 } 5526 } 5527 startTouch(x, y, eventTime); 5528 break; 5529 } 5530 case MotionEvent.ACTION_MOVE: { 5531 boolean firstMove = false; 5532 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5533 >= mTouchSlopSquare) { 5534 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5535 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5536 mConfirmMove = true; 5537 firstMove = true; 5538 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5539 mTouchMode = TOUCH_INIT_MODE; 5540 } 5541 if (getSettings().supportTouchOnly()) { 5542 removeTouchHighlight(true); 5543 } 5544 } 5545 // pass the touch events from UI thread to WebCore thread 5546 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5547 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5548 TouchEventData ted = new TouchEventData(); 5549 ted.mAction = action; 5550 ted.mIds = new int[1]; 5551 ted.mIds[0] = ev.getPointerId(0); 5552 ted.mPoints = new Point[1]; 5553 ted.mPoints[0] = new Point(contentX, contentY); 5554 ted.mMetaState = ev.getMetaState(); 5555 ted.mReprocess = mDeferTouchProcess; 5556 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5557 mLastSentTouchTime = eventTime; 5558 if (mDeferTouchProcess) { 5559 break; 5560 } 5561 if (firstMove && !inFullScreenMode()) { 5562 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5563 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5564 action, 0), TAP_TIMEOUT); 5565 } 5566 } 5567 if (mTouchMode == TOUCH_DONE_MODE 5568 || mPreventDefault == PREVENT_DEFAULT_YES) { 5569 // no dragging during scroll zoom animation, or when prevent 5570 // default is yes 5571 break; 5572 } 5573 if (mVelocityTracker == null) { 5574 Log.e(LOGTAG, "Got null mVelocityTracker when " 5575 + "mPreventDefault = " + mPreventDefault 5576 + " mDeferTouchProcess = " + mDeferTouchProcess 5577 + " mTouchMode = " + mTouchMode); 5578 } else { 5579 mVelocityTracker.addMovement(ev); 5580 } 5581 if (mSelectingText && mSelectionStarted) { 5582 if (DebugFlags.WEB_VIEW) { 5583 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5584 } 5585 ViewParent parent = getParent(); 5586 if (parent != null) { 5587 parent.requestDisallowInterceptTouchEvent(true); 5588 } 5589 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 5590 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 5591 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 5592 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 5593 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 5594 && !mSentAutoScrollMessage) { 5595 mSentAutoScrollMessage = true; 5596 mPrivateHandler.sendEmptyMessageDelayed( 5597 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5598 } 5599 if (deltaX != 0 || deltaY != 0) { 5600 nativeExtendSelection(contentX, contentY); 5601 invalidate(); 5602 } 5603 break; 5604 } 5605 5606 if (mTouchMode != TOUCH_DRAG_MODE && 5607 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5608 5609 if (!mConfirmMove) { 5610 break; 5611 } 5612 5613 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5614 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5615 // track mLastTouchTime as we may need to do fling at 5616 // ACTION_UP 5617 mLastTouchTime = eventTime; 5618 break; 5619 } 5620 5621 // Only lock dragging to one axis if we don't have a scale in progress. 5622 // Scaling implies free-roaming movement. Note this is only ever a question 5623 // if mZoomManager.supportsPanDuringZoom() is true. 5624 final ScaleGestureDetector detector = 5625 mZoomManager.getMultiTouchGestureDetector(); 5626 if (detector == null || !detector.isInProgress()) { 5627 // if it starts nearly horizontal or vertical, enforce it 5628 int ax = Math.abs(deltaX); 5629 int ay = Math.abs(deltaY); 5630 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5631 mSnapScrollMode = SNAP_X; 5632 mSnapPositive = deltaX > 0; 5633 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5634 mSnapScrollMode = SNAP_Y; 5635 mSnapPositive = deltaY > 0; 5636 } 5637 } 5638 5639 mTouchMode = TOUCH_DRAG_MODE; 5640 mLastTouchX = x; 5641 mLastTouchY = y; 5642 deltaX = 0; 5643 deltaY = 0; 5644 5645 startScrollingLayer(x, y); 5646 startDrag(); 5647 } 5648 5649 // do pan 5650 boolean done = false; 5651 boolean keepScrollBarsVisible = false; 5652 if (deltaX == 0 && deltaY == 0) { 5653 keepScrollBarsVisible = done = true; 5654 } else { 5655 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5656 int ax = Math.abs(deltaX); 5657 int ay = Math.abs(deltaY); 5658 if (mSnapScrollMode == SNAP_X) { 5659 // radical change means getting out of snap mode 5660 if (ay > MAX_SLOPE_FOR_DIAG * ax 5661 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5662 mSnapScrollMode = SNAP_NONE; 5663 } 5664 // reverse direction means lock in the snap mode 5665 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5666 (mSnapPositive 5667 ? deltaX < -mMinLockSnapReverseDistance 5668 : deltaX > mMinLockSnapReverseDistance)) { 5669 mSnapScrollMode |= SNAP_LOCK; 5670 } 5671 } else { 5672 // radical change means getting out of snap mode 5673 if (ax > MAX_SLOPE_FOR_DIAG * ay 5674 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5675 mSnapScrollMode = SNAP_NONE; 5676 } 5677 // reverse direction means lock in the snap mode 5678 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5679 (mSnapPositive 5680 ? deltaY < -mMinLockSnapReverseDistance 5681 : deltaY > mMinLockSnapReverseDistance)) { 5682 mSnapScrollMode |= SNAP_LOCK; 5683 } 5684 } 5685 } 5686 if (mSnapScrollMode != SNAP_NONE) { 5687 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5688 deltaY = 0; 5689 } else { 5690 deltaX = 0; 5691 } 5692 } 5693 if ((deltaX | deltaY) != 0) { 5694 if (deltaX != 0) { 5695 mLastTouchX = x; 5696 } 5697 if (deltaY != 0) { 5698 mLastTouchY = y; 5699 } 5700 mHeldMotionless = MOTIONLESS_FALSE; 5701 } 5702 mLastTouchTime = eventTime; 5703 } 5704 5705 doDrag(deltaX, deltaY); 5706 5707 // Turn off scrollbars when dragging a layer. 5708 if (keepScrollBarsVisible && 5709 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5710 if (mHeldMotionless != MOTIONLESS_TRUE) { 5711 mHeldMotionless = MOTIONLESS_TRUE; 5712 invalidate(); 5713 } 5714 // keep the scrollbar on the screen even there is no scroll 5715 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5716 false); 5717 // return false to indicate that we can't pan out of the 5718 // view space 5719 return !done; 5720 } 5721 break; 5722 } 5723 case MotionEvent.ACTION_UP: { 5724 if (!isFocused()) requestFocus(); 5725 // pass the touch events from UI thread to WebCore thread 5726 if (shouldForwardTouchEvent()) { 5727 TouchEventData ted = new TouchEventData(); 5728 ted.mIds = new int[1]; 5729 ted.mIds[0] = ev.getPointerId(0); 5730 ted.mAction = action; 5731 ted.mPoints = new Point[1]; 5732 ted.mPoints[0] = new Point(contentX, contentY); 5733 ted.mMetaState = ev.getMetaState(); 5734 ted.mReprocess = mDeferTouchProcess; 5735 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5736 } 5737 mLastTouchUpTime = eventTime; 5738 if (mSentAutoScrollMessage) { 5739 mAutoScrollX = mAutoScrollY = 0; 5740 } 5741 switch (mTouchMode) { 5742 case TOUCH_DOUBLE_TAP_MODE: // double tap 5743 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5744 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5745 if (inFullScreenMode() || mDeferTouchProcess) { 5746 TouchEventData ted = new TouchEventData(); 5747 ted.mIds = new int[1]; 5748 ted.mIds[0] = ev.getPointerId(0); 5749 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5750 ted.mPoints = new Point[1]; 5751 ted.mPoints[0] = new Point(contentX, contentY); 5752 ted.mMetaState = ev.getMetaState(); 5753 ted.mReprocess = mDeferTouchProcess; 5754 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5755 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5756 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5757 mTouchMode = TOUCH_DONE_MODE; 5758 } 5759 break; 5760 case TOUCH_INIT_MODE: // tap 5761 case TOUCH_SHORTPRESS_START_MODE: 5762 case TOUCH_SHORTPRESS_MODE: 5763 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5764 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5765 if (mConfirmMove) { 5766 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5767 " WebCore's response for touch down."); 5768 if (mPreventDefault != PREVENT_DEFAULT_YES 5769 && (computeMaxScrollX() > 0 5770 || computeMaxScrollY() > 0)) { 5771 // If the user has performed a very quick touch 5772 // sequence it is possible that we may get here 5773 // before WebCore has had a chance to process the events. 5774 // In this case, any call to preventDefault in the 5775 // JS touch handler will not have been executed yet. 5776 // Hence we will see both the UI (now) and WebCore 5777 // (when context switches) handling the event, 5778 // regardless of whether the web developer actually 5779 // doeses preventDefault in their touch handler. This 5780 // is the nature of our asynchronous touch model. 5781 5782 // we will not rewrite drag code here, but we 5783 // will try fling if it applies. 5784 WebViewCore.reducePriority(); 5785 // to get better performance, pause updating the 5786 // picture 5787 WebViewCore.pauseUpdatePicture(mWebViewCore); 5788 // fall through to TOUCH_DRAG_MODE 5789 } else { 5790 // WebKit may consume the touch event and modify 5791 // DOM. drawContentPicture() will be called with 5792 // animateSroll as true for better performance. 5793 // Force redraw in high-quality. 5794 invalidate(); 5795 break; 5796 } 5797 } else { 5798 if (mSelectingText) { 5799 // tapping on selection or controls does nothing 5800 if (!nativeHitSelection(contentX, contentY)) { 5801 selectionDone(); 5802 } 5803 break; 5804 } 5805 // only trigger double tap if the WebView is 5806 // scalable 5807 if (mTouchMode == TOUCH_INIT_MODE 5808 && (canZoomIn() || canZoomOut())) { 5809 mPrivateHandler.sendEmptyMessageDelayed( 5810 RELEASE_SINGLE_TAP, ViewConfiguration 5811 .getDoubleTapTimeout()); 5812 } else { 5813 doShortPress(); 5814 } 5815 break; 5816 } 5817 case TOUCH_DRAG_MODE: 5818 case TOUCH_DRAG_LAYER_MODE: 5819 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5820 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5821 // if the user waits a while w/o moving before the 5822 // up, we don't want to do a fling 5823 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5824 if (mVelocityTracker == null) { 5825 Log.e(LOGTAG, "Got null mVelocityTracker when " 5826 + "mPreventDefault = " 5827 + mPreventDefault 5828 + " mDeferTouchProcess = " 5829 + mDeferTouchProcess); 5830 } else { 5831 mVelocityTracker.addMovement(ev); 5832 } 5833 // set to MOTIONLESS_IGNORE so that it won't keep 5834 // removing and sending message in 5835 // drawCoreAndCursorRing() 5836 mHeldMotionless = MOTIONLESS_IGNORE; 5837 doFling(); 5838 break; 5839 } else { 5840 if (mScroller.springBack(mScrollX, mScrollY, 0, 5841 computeMaxScrollX(), 0, 5842 computeMaxScrollY())) { 5843 invalidate(); 5844 } 5845 } 5846 // redraw in high-quality, as we're done dragging 5847 mHeldMotionless = MOTIONLESS_TRUE; 5848 invalidate(); 5849 // fall through 5850 case TOUCH_DRAG_START_MODE: 5851 // TOUCH_DRAG_START_MODE should not happen for the real 5852 // device as we almost certain will get a MOVE. But this 5853 // is possible on emulator. 5854 mLastVelocity = 0; 5855 WebViewCore.resumePriority(); 5856 if (!mSelectingText) { 5857 WebViewCore.resumeUpdatePicture(mWebViewCore); 5858 } 5859 break; 5860 } 5861 stopTouch(); 5862 break; 5863 } 5864 case MotionEvent.ACTION_CANCEL: { 5865 if (mTouchMode == TOUCH_DRAG_MODE) { 5866 mScroller.springBack(mScrollX, mScrollY, 0, 5867 computeMaxScrollX(), 0, computeMaxScrollY()); 5868 invalidate(); 5869 } 5870 cancelWebCoreTouchEvent(contentX, contentY, false); 5871 cancelTouch(); 5872 break; 5873 } 5874 } 5875 return true; 5876 } 5877 5878 private void passMultiTouchToWebKit(MotionEvent ev) { 5879 TouchEventData ted = new TouchEventData(); 5880 ted.mAction = ev.getActionMasked(); 5881 final int count = ev.getPointerCount(); 5882 ted.mIds = new int[count]; 5883 ted.mPoints = new Point[count]; 5884 for (int c = 0; c < count; c++) { 5885 ted.mIds[c] = ev.getPointerId(c); 5886 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5887 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5888 ted.mPoints[c] = new Point(x, y); 5889 } 5890 ted.mMetaState = ev.getMetaState(); 5891 ted.mReprocess = true; 5892 ted.mMotionEvent = MotionEvent.obtain(ev); 5893 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5894 cancelLongPress(); 5895 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5896 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5897 } 5898 5899 private void handleMultiTouchInWebView(MotionEvent ev) { 5900 if (DebugFlags.WEB_VIEW) { 5901 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 5902 + " mTouchMode=" + mTouchMode 5903 + " numPointers=" + ev.getPointerCount() 5904 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 5905 } 5906 5907 final ScaleGestureDetector detector = 5908 mZoomManager.getMultiTouchGestureDetector(); 5909 5910 // A few apps use WebView but don't instantiate gesture detector. 5911 // We don't need to support multi touch for them. 5912 if (detector == null) return; 5913 5914 float x = ev.getX(); 5915 float y = ev.getY(); 5916 5917 if (!detector.isInProgress() && 5918 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 5919 // Insert a fake pointer down event in order to start 5920 // the zoom scale detector. 5921 MotionEvent temp = MotionEvent.obtain(ev); 5922 // Clear the original event and set it to 5923 // ACTION_POINTER_DOWN. 5924 try { 5925 temp.setAction(temp.getAction() & 5926 ~MotionEvent.ACTION_MASK | 5927 MotionEvent.ACTION_POINTER_DOWN); 5928 detector.onTouchEvent(temp); 5929 } finally { 5930 temp.recycle(); 5931 } 5932 } 5933 5934 detector.onTouchEvent(ev); 5935 5936 if (detector.isInProgress()) { 5937 if (DebugFlags.WEB_VIEW) { 5938 Log.v(LOGTAG, "detector is in progress"); 5939 } 5940 mLastTouchTime = ev.getEventTime(); 5941 x = detector.getFocusX(); 5942 y = detector.getFocusY(); 5943 5944 cancelLongPress(); 5945 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5946 if (!mZoomManager.supportsPanDuringZoom()) { 5947 return; 5948 } 5949 mTouchMode = TOUCH_DRAG_MODE; 5950 if (mVelocityTracker == null) { 5951 mVelocityTracker = VelocityTracker.obtain(); 5952 } 5953 } 5954 5955 int action = ev.getActionMasked(); 5956 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5957 cancelTouch(); 5958 action = MotionEvent.ACTION_DOWN; 5959 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5960 // set mLastTouchX/Y to the remaining point 5961 mLastTouchX = Math.round(x); 5962 mLastTouchY = Math.round(y); 5963 mIsHandlingMultiTouch = false; 5964 } else if (action == MotionEvent.ACTION_MOVE) { 5965 // negative x or y indicate it is on the edge, skip it. 5966 if (x < 0 || y < 0) { 5967 return; 5968 } 5969 } 5970 5971 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 5972 } 5973 5974 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5975 if (shouldForwardTouchEvent()) { 5976 if (removeEvents) { 5977 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5978 } 5979 TouchEventData ted = new TouchEventData(); 5980 ted.mIds = new int[1]; 5981 ted.mIds[0] = 0; 5982 ted.mPoints = new Point[1]; 5983 ted.mPoints[0] = new Point(x, y); 5984 ted.mAction = MotionEvent.ACTION_CANCEL; 5985 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5986 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5987 } 5988 } 5989 5990 private void startTouch(float x, float y, long eventTime) { 5991 // Remember where the motion event started 5992 mLastTouchX = Math.round(x); 5993 mLastTouchY = Math.round(y); 5994 mLastTouchTime = eventTime; 5995 mVelocityTracker = VelocityTracker.obtain(); 5996 mSnapScrollMode = SNAP_NONE; 5997 } 5998 5999 private void startDrag() { 6000 WebViewCore.reducePriority(); 6001 // to get better performance, pause updating the picture 6002 WebViewCore.pauseUpdatePicture(mWebViewCore); 6003 if (!mDragFromTextInput) { 6004 nativeHideCursor(); 6005 } 6006 6007 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6008 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6009 mZoomManager.invokeZoomPicker(); 6010 } 6011 } 6012 6013 private void doDrag(int deltaX, int deltaY) { 6014 if ((deltaX | deltaY) != 0) { 6015 int oldX = mScrollX; 6016 int oldY = mScrollY; 6017 int rangeX = computeMaxScrollX(); 6018 int rangeY = computeMaxScrollY(); 6019 int overscrollDistance = mOverscrollDistance; 6020 6021 // Check for the original scrolling layer in case we change 6022 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6023 // reached the edge of a layer but mScrollingLayer will be non-zero 6024 // if we initiated the drag on a layer. 6025 if (mScrollingLayer != 0) { 6026 final int contentX = viewToContentDimension(deltaX); 6027 final int contentY = viewToContentDimension(deltaY); 6028 6029 // Check the scrolling bounds to see if we will actually do any 6030 // scrolling. The rectangle is in document coordinates. 6031 final int maxX = mScrollingLayerRect.right; 6032 final int maxY = mScrollingLayerRect.bottom; 6033 final int resultX = Math.max(0, 6034 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6035 final int resultY = Math.max(0, 6036 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6037 6038 if (resultX != mScrollingLayerRect.left || 6039 resultY != mScrollingLayerRect.top) { 6040 // In case we switched to dragging the page. 6041 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6042 deltaX = contentX; 6043 deltaY = contentY; 6044 oldX = mScrollingLayerRect.left; 6045 oldY = mScrollingLayerRect.top; 6046 rangeX = maxX; 6047 rangeY = maxY; 6048 } else { 6049 // Scroll the main page if we are not going to scroll the 6050 // layer. This does not reset mScrollingLayer in case the 6051 // user changes directions and the layer can scroll the 6052 // other way. 6053 mTouchMode = TOUCH_DRAG_MODE; 6054 } 6055 } 6056 6057 if (mOverScrollGlow != null) { 6058 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6059 } 6060 6061 overScrollBy(deltaX, deltaY, oldX, oldY, 6062 rangeX, rangeY, 6063 mOverscrollDistance, mOverscrollDistance, true); 6064 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6065 invalidate(); 6066 } 6067 } 6068 mZoomManager.keepZoomPickerVisible(); 6069 } 6070 6071 private void stopTouch() { 6072 // we also use mVelocityTracker == null to tell us that we are 6073 // not "moving around", so we can take the slower/prettier 6074 // mode in the drawing code 6075 if (mVelocityTracker != null) { 6076 mVelocityTracker.recycle(); 6077 mVelocityTracker = null; 6078 } 6079 6080 // Release any pulled glows 6081 if (mOverScrollGlow != null) { 6082 mOverScrollGlow.releaseAll(); 6083 } 6084 } 6085 6086 private void cancelTouch() { 6087 // we also use mVelocityTracker == null to tell us that we are 6088 // not "moving around", so we can take the slower/prettier 6089 // mode in the drawing code 6090 if (mVelocityTracker != null) { 6091 mVelocityTracker.recycle(); 6092 mVelocityTracker = null; 6093 } 6094 6095 if ((mTouchMode == TOUCH_DRAG_MODE 6096 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6097 WebViewCore.resumePriority(); 6098 WebViewCore.resumeUpdatePicture(mWebViewCore); 6099 } 6100 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6101 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6102 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6103 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6104 if (getSettings().supportTouchOnly()) { 6105 removeTouchHighlight(true); 6106 } 6107 mHeldMotionless = MOTIONLESS_TRUE; 6108 mTouchMode = TOUCH_DONE_MODE; 6109 nativeHideCursor(); 6110 } 6111 6112 private long mTrackballFirstTime = 0; 6113 private long mTrackballLastTime = 0; 6114 private float mTrackballRemainsX = 0.0f; 6115 private float mTrackballRemainsY = 0.0f; 6116 private int mTrackballXMove = 0; 6117 private int mTrackballYMove = 0; 6118 private boolean mSelectingText = false; 6119 private boolean mSelectionStarted = false; 6120 private boolean mExtendSelection = false; 6121 private boolean mDrawSelectionPointer = false; 6122 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6123 private static final int TRACKBALL_TIMEOUT = 200; 6124 private static final int TRACKBALL_WAIT = 100; 6125 private static final int TRACKBALL_SCALE = 400; 6126 private static final int TRACKBALL_SCROLL_COUNT = 5; 6127 private static final int TRACKBALL_MOVE_COUNT = 10; 6128 private static final int TRACKBALL_MULTIPLIER = 3; 6129 private static final int SELECT_CURSOR_OFFSET = 16; 6130 private static final int SELECT_SCROLL = 5; 6131 private int mSelectX = 0; 6132 private int mSelectY = 0; 6133 private boolean mFocusSizeChanged = false; 6134 private boolean mTrackballDown = false; 6135 private long mTrackballUpTime = 0; 6136 private long mLastCursorTime = 0; 6137 private Rect mLastCursorBounds; 6138 6139 // Set by default; BrowserActivity clears to interpret trackball data 6140 // directly for movement. Currently, the framework only passes 6141 // arrow key events, not trackball events, from one child to the next 6142 private boolean mMapTrackballToArrowKeys = true; 6143 6144 public void setMapTrackballToArrowKeys(boolean setMap) { 6145 mMapTrackballToArrowKeys = setMap; 6146 } 6147 6148 void resetTrackballTime() { 6149 mTrackballLastTime = 0; 6150 } 6151 6152 @Override 6153 public boolean onTrackballEvent(MotionEvent ev) { 6154 long time = ev.getEventTime(); 6155 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6156 if (ev.getY() > 0) pageDown(true); 6157 if (ev.getY() < 0) pageUp(true); 6158 return true; 6159 } 6160 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6161 if (mSelectingText) { 6162 return true; // discard press if copy in progress 6163 } 6164 mTrackballDown = true; 6165 if (mNativeClass == 0) { 6166 return false; 6167 } 6168 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6169 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6170 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6171 nativeSelectBestAt(mLastCursorBounds); 6172 } 6173 if (DebugFlags.WEB_VIEW) { 6174 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6175 + " time=" + time 6176 + " mLastCursorTime=" + mLastCursorTime); 6177 } 6178 if (isInTouchMode()) requestFocusFromTouch(); 6179 return false; // let common code in onKeyDown at it 6180 } 6181 if (ev.getAction() == MotionEvent.ACTION_UP) { 6182 // LONG_PRESS_CENTER is set in common onKeyDown 6183 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6184 mTrackballDown = false; 6185 mTrackballUpTime = time; 6186 if (mSelectingText) { 6187 if (mExtendSelection) { 6188 copySelection(); 6189 selectionDone(); 6190 } else { 6191 mExtendSelection = true; 6192 nativeSetExtendSelection(); 6193 invalidate(); // draw the i-beam instead of the arrow 6194 } 6195 return true; // discard press if copy in progress 6196 } 6197 if (DebugFlags.WEB_VIEW) { 6198 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6199 + " time=" + time 6200 ); 6201 } 6202 return false; // let common code in onKeyUp at it 6203 } 6204 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6205 AccessibilityManager.getInstance(mContext).isEnabled()) { 6206 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6207 return false; 6208 } 6209 if (mTrackballDown) { 6210 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6211 return true; // discard move if trackball is down 6212 } 6213 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6214 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6215 return true; 6216 } 6217 // TODO: alternatively we can do panning as touch does 6218 switchOutDrawHistory(); 6219 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6220 if (DebugFlags.WEB_VIEW) { 6221 Log.v(LOGTAG, "onTrackballEvent time=" 6222 + time + " last=" + mTrackballLastTime); 6223 } 6224 mTrackballFirstTime = time; 6225 mTrackballXMove = mTrackballYMove = 0; 6226 } 6227 mTrackballLastTime = time; 6228 if (DebugFlags.WEB_VIEW) { 6229 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6230 } 6231 mTrackballRemainsX += ev.getX(); 6232 mTrackballRemainsY += ev.getY(); 6233 doTrackball(time, ev.getMetaState()); 6234 return true; 6235 } 6236 6237 void moveSelection(float xRate, float yRate) { 6238 if (mNativeClass == 0) 6239 return; 6240 int width = getViewWidth(); 6241 int height = getViewHeight(); 6242 mSelectX += xRate; 6243 mSelectY += yRate; 6244 int maxX = width + mScrollX; 6245 int maxY = height + mScrollY; 6246 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6247 , mSelectX)); 6248 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6249 , mSelectY)); 6250 if (DebugFlags.WEB_VIEW) { 6251 Log.v(LOGTAG, "moveSelection" 6252 + " mSelectX=" + mSelectX 6253 + " mSelectY=" + mSelectY 6254 + " mScrollX=" + mScrollX 6255 + " mScrollY=" + mScrollY 6256 + " xRate=" + xRate 6257 + " yRate=" + yRate 6258 ); 6259 } 6260 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6261 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6262 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6263 : 0; 6264 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6265 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6266 : 0; 6267 pinScrollBy(scrollX, scrollY, true, 0); 6268 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6269 requestRectangleOnScreen(select); 6270 invalidate(); 6271 } 6272 6273 private int scaleTrackballX(float xRate, int width) { 6274 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6275 int nextXMove = xMove; 6276 if (xMove > 0) { 6277 if (xMove > mTrackballXMove) { 6278 xMove -= mTrackballXMove; 6279 } 6280 } else if (xMove < mTrackballXMove) { 6281 xMove -= mTrackballXMove; 6282 } 6283 mTrackballXMove = nextXMove; 6284 return xMove; 6285 } 6286 6287 private int scaleTrackballY(float yRate, int height) { 6288 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6289 int nextYMove = yMove; 6290 if (yMove > 0) { 6291 if (yMove > mTrackballYMove) { 6292 yMove -= mTrackballYMove; 6293 } 6294 } else if (yMove < mTrackballYMove) { 6295 yMove -= mTrackballYMove; 6296 } 6297 mTrackballYMove = nextYMove; 6298 return yMove; 6299 } 6300 6301 private int keyCodeToSoundsEffect(int keyCode) { 6302 switch(keyCode) { 6303 case KeyEvent.KEYCODE_DPAD_UP: 6304 return SoundEffectConstants.NAVIGATION_UP; 6305 case KeyEvent.KEYCODE_DPAD_RIGHT: 6306 return SoundEffectConstants.NAVIGATION_RIGHT; 6307 case KeyEvent.KEYCODE_DPAD_DOWN: 6308 return SoundEffectConstants.NAVIGATION_DOWN; 6309 case KeyEvent.KEYCODE_DPAD_LEFT: 6310 return SoundEffectConstants.NAVIGATION_LEFT; 6311 } 6312 throw new IllegalArgumentException("keyCode must be one of " + 6313 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6314 "KEYCODE_DPAD_LEFT}."); 6315 } 6316 6317 private void doTrackball(long time, int metaState) { 6318 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6319 if (elapsed == 0) { 6320 elapsed = TRACKBALL_TIMEOUT; 6321 } 6322 float xRate = mTrackballRemainsX * 1000 / elapsed; 6323 float yRate = mTrackballRemainsY * 1000 / elapsed; 6324 int viewWidth = getViewWidth(); 6325 int viewHeight = getViewHeight(); 6326 if (mSelectingText) { 6327 if (!mDrawSelectionPointer) { 6328 // The last selection was made by touch, disabling drawing the 6329 // selection pointer. Allow the trackball to adjust the 6330 // position of the touch control. 6331 mSelectX = contentToViewX(nativeSelectionX()); 6332 mSelectY = contentToViewY(nativeSelectionY()); 6333 mDrawSelectionPointer = mExtendSelection = true; 6334 nativeSetExtendSelection(); 6335 } 6336 moveSelection(scaleTrackballX(xRate, viewWidth), 6337 scaleTrackballY(yRate, viewHeight)); 6338 mTrackballRemainsX = mTrackballRemainsY = 0; 6339 return; 6340 } 6341 float ax = Math.abs(xRate); 6342 float ay = Math.abs(yRate); 6343 float maxA = Math.max(ax, ay); 6344 if (DebugFlags.WEB_VIEW) { 6345 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6346 + " xRate=" + xRate 6347 + " yRate=" + yRate 6348 + " mTrackballRemainsX=" + mTrackballRemainsX 6349 + " mTrackballRemainsY=" + mTrackballRemainsY); 6350 } 6351 int width = mContentWidth - viewWidth; 6352 int height = mContentHeight - viewHeight; 6353 if (width < 0) width = 0; 6354 if (height < 0) height = 0; 6355 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6356 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6357 maxA = Math.max(ax, ay); 6358 int count = Math.max(0, (int) maxA); 6359 int oldScrollX = mScrollX; 6360 int oldScrollY = mScrollY; 6361 if (count > 0) { 6362 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6363 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6364 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6365 KeyEvent.KEYCODE_DPAD_RIGHT; 6366 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6367 if (DebugFlags.WEB_VIEW) { 6368 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6369 + " count=" + count 6370 + " mTrackballRemainsX=" + mTrackballRemainsX 6371 + " mTrackballRemainsY=" + mTrackballRemainsY); 6372 } 6373 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6374 for (int i = 0; i < count; i++) { 6375 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6376 } 6377 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6378 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6379 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6380 } 6381 mTrackballRemainsX = mTrackballRemainsY = 0; 6382 } 6383 if (count >= TRACKBALL_SCROLL_COUNT) { 6384 int xMove = scaleTrackballX(xRate, width); 6385 int yMove = scaleTrackballY(yRate, height); 6386 if (DebugFlags.WEB_VIEW) { 6387 Log.v(LOGTAG, "doTrackball pinScrollBy" 6388 + " count=" + count 6389 + " xMove=" + xMove + " yMove=" + yMove 6390 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6391 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6392 ); 6393 } 6394 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6395 xMove = 0; 6396 } 6397 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6398 yMove = 0; 6399 } 6400 if (xMove != 0 || yMove != 0) { 6401 pinScrollBy(xMove, yMove, true, 0); 6402 } 6403 } 6404 } 6405 6406 /** 6407 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6408 * @return Maximum horizontal scroll position within real content 6409 */ 6410 int computeMaxScrollX() { 6411 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6412 } 6413 6414 /** 6415 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6416 * @return Maximum vertical scroll position within real content 6417 */ 6418 int computeMaxScrollY() { 6419 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6420 - getViewHeightWithTitle(), 0); 6421 } 6422 6423 boolean updateScrollCoordinates(int x, int y) { 6424 int oldX = mScrollX; 6425 int oldY = mScrollY; 6426 mScrollX = x; 6427 mScrollY = y; 6428 if (oldX != mScrollX || oldY != mScrollY) { 6429 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6430 return true; 6431 } else { 6432 return false; 6433 } 6434 } 6435 6436 public void flingScroll(int vx, int vy) { 6437 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6438 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6439 invalidate(); 6440 } 6441 6442 private void doFling() { 6443 if (mVelocityTracker == null) { 6444 return; 6445 } 6446 int maxX = computeMaxScrollX(); 6447 int maxY = computeMaxScrollY(); 6448 6449 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6450 int vx = (int) mVelocityTracker.getXVelocity(); 6451 int vy = (int) mVelocityTracker.getYVelocity(); 6452 6453 int scrollX = mScrollX; 6454 int scrollY = mScrollY; 6455 int overscrollDistance = mOverscrollDistance; 6456 int overflingDistance = mOverflingDistance; 6457 6458 // Use the layer's scroll data if applicable. 6459 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6460 scrollX = mScrollingLayerRect.left; 6461 scrollY = mScrollingLayerRect.top; 6462 maxX = mScrollingLayerRect.right; 6463 maxY = mScrollingLayerRect.bottom; 6464 // No overscrolling for layers. 6465 overscrollDistance = overflingDistance = 0; 6466 } 6467 6468 if (mSnapScrollMode != SNAP_NONE) { 6469 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6470 vy = 0; 6471 } else { 6472 vx = 0; 6473 } 6474 } 6475 if (true /* EMG release: make our fling more like Maps' */) { 6476 // maps cuts their velocity in half 6477 vx = vx * 3 / 4; 6478 vy = vy * 3 / 4; 6479 } 6480 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6481 WebViewCore.resumePriority(); 6482 if (!mSelectingText) { 6483 WebViewCore.resumeUpdatePicture(mWebViewCore); 6484 } 6485 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6486 invalidate(); 6487 } 6488 return; 6489 } 6490 float currentVelocity = mScroller.getCurrVelocity(); 6491 float velocity = (float) Math.hypot(vx, vy); 6492 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6493 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6494 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6495 - Math.atan2(vy, vx))); 6496 final float circle = (float) (Math.PI) * 2.0f; 6497 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6498 vx += currentVelocity * mLastVelX / mLastVelocity; 6499 vy += currentVelocity * mLastVelY / mLastVelocity; 6500 velocity = (float) Math.hypot(vx, vy); 6501 if (DebugFlags.WEB_VIEW) { 6502 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6503 } 6504 } else if (DebugFlags.WEB_VIEW) { 6505 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6506 } 6507 } else if (DebugFlags.WEB_VIEW) { 6508 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6509 + " current=" + currentVelocity 6510 + " vx=" + vx + " vy=" + vy 6511 + " maxX=" + maxX + " maxY=" + maxY 6512 + " scrollX=" + scrollX + " scrollY=" + scrollY 6513 + " layer=" + mScrollingLayer); 6514 } 6515 6516 // Allow sloppy flings without overscrolling at the edges. 6517 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6518 vx = 0; 6519 } 6520 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6521 vy = 0; 6522 } 6523 6524 if (overscrollDistance < overflingDistance) { 6525 if ((vx > 0 && scrollX == -overscrollDistance) || 6526 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6527 vx = 0; 6528 } 6529 if ((vy > 0 && scrollY == -overscrollDistance) || 6530 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6531 vy = 0; 6532 } 6533 } 6534 6535 mLastVelX = vx; 6536 mLastVelY = vy; 6537 mLastVelocity = velocity; 6538 6539 // no horizontal overscroll if the content just fits 6540 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6541 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6542 // Duration is calculated based on velocity. With range boundaries and overscroll 6543 // we may not know how long the final animation will take. (Hence the deprecation 6544 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6545 // resumes during this effect we will take a performance hit. See computeScroll; 6546 // we resume webcore there when the animation is finished. 6547 final int time = mScroller.getDuration(); 6548 6549 // Suppress scrollbars for layer scrolling. 6550 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6551 awakenScrollBars(time); 6552 } 6553 6554 invalidate(); 6555 } 6556 6557 /** 6558 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6559 * in charge of installing this view to the view hierarchy. This view will 6560 * become visible when the user starts scrolling via touch and fade away if 6561 * the user does not interact with it. 6562 * <p/> 6563 * API version 3 introduces a built-in zoom mechanism that is shown 6564 * automatically by the MapView. This is the preferred approach for 6565 * showing the zoom UI. 6566 * 6567 * @deprecated The built-in zoom mechanism is preferred, see 6568 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6569 */ 6570 @Deprecated 6571 public View getZoomControls() { 6572 if (!getSettings().supportZoom()) { 6573 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6574 return null; 6575 } 6576 return mZoomManager.getExternalZoomPicker(); 6577 } 6578 6579 void dismissZoomControl() { 6580 mZoomManager.dismissZoomPicker(); 6581 } 6582 6583 float getDefaultZoomScale() { 6584 return mZoomManager.getDefaultScale(); 6585 } 6586 6587 /** 6588 * @return TRUE if the WebView can be zoomed in. 6589 */ 6590 public boolean canZoomIn() { 6591 return mZoomManager.canZoomIn(); 6592 } 6593 6594 /** 6595 * @return TRUE if the WebView can be zoomed out. 6596 */ 6597 public boolean canZoomOut() { 6598 return mZoomManager.canZoomOut(); 6599 } 6600 6601 /** 6602 * Perform zoom in in the webview 6603 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6604 */ 6605 public boolean zoomIn() { 6606 return mZoomManager.zoomIn(); 6607 } 6608 6609 /** 6610 * Perform zoom out in the webview 6611 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6612 */ 6613 public boolean zoomOut() { 6614 return mZoomManager.zoomOut(); 6615 } 6616 6617 private void updateSelection() { 6618 if (mNativeClass == 0) { 6619 return; 6620 } 6621 // mLastTouchX and mLastTouchY are the point in the current viewport 6622 int contentX = viewToContentX(mLastTouchX + mScrollX); 6623 int contentY = viewToContentY(mLastTouchY + mScrollY); 6624 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 6625 contentX + mNavSlop, contentY + mNavSlop); 6626 nativeSelectBestAt(rect); 6627 mInitialHitTestResult = hitTestResult(null); 6628 } 6629 6630 /** 6631 * Scroll the focused text field to match the WebTextView 6632 * @param xPercent New x position of the WebTextView from 0 to 1. 6633 */ 6634 /*package*/ void scrollFocusedTextInputX(float xPercent) { 6635 if (!inEditingMode() || mWebViewCore == null) { 6636 return; 6637 } 6638 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 6639 new Float(xPercent)); 6640 } 6641 6642 /** 6643 * Scroll the focused textarea vertically to match the WebTextView 6644 * @param y New y position of the WebTextView in view coordinates 6645 */ 6646 /* package */ void scrollFocusedTextInputY(int y) { 6647 if (!inEditingMode() || mWebViewCore == null) { 6648 return; 6649 } 6650 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 6651 } 6652 6653 /** 6654 * Set our starting point and time for a drag from the WebTextView. 6655 */ 6656 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6657 if (!inEditingMode()) { 6658 return; 6659 } 6660 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 6661 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 6662 mLastTouchTime = eventTime; 6663 if (!mScroller.isFinished()) { 6664 abortAnimation(); 6665 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6666 } 6667 mSnapScrollMode = SNAP_NONE; 6668 mVelocityTracker = VelocityTracker.obtain(); 6669 mTouchMode = TOUCH_DRAG_START_MODE; 6670 } 6671 6672 /** 6673 * Given a motion event from the WebTextView, set its location to our 6674 * coordinates, and handle the event. 6675 */ 6676 /*package*/ boolean textFieldDrag(MotionEvent event) { 6677 if (!inEditingMode()) { 6678 return false; 6679 } 6680 mDragFromTextInput = true; 6681 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6682 (float) (mWebTextView.getTop() - mScrollY)); 6683 boolean result = onTouchEvent(event); 6684 mDragFromTextInput = false; 6685 return result; 6686 } 6687 6688 /** 6689 * Due a touch up from a WebTextView. This will be handled by webkit to 6690 * change the selection. 6691 * @param event MotionEvent in the WebTextView's coordinates. 6692 */ 6693 /*package*/ void touchUpOnTextField(MotionEvent event) { 6694 if (!inEditingMode()) { 6695 return; 6696 } 6697 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6698 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6699 nativeMotionUp(x, y, mNavSlop); 6700 } 6701 6702 /** 6703 * Called when pressing the center key or trackball on a textfield. 6704 */ 6705 /*package*/ void centerKeyPressOnTextField() { 6706 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6707 nativeCursorNodePointer()); 6708 } 6709 6710 private void doShortPress() { 6711 if (mNativeClass == 0) { 6712 return; 6713 } 6714 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6715 return; 6716 } 6717 mTouchMode = TOUCH_DONE_MODE; 6718 switchOutDrawHistory(); 6719 // mLastTouchX and mLastTouchY are the point in the current viewport 6720 int contentX = viewToContentX(mLastTouchX + mScrollX); 6721 int contentY = viewToContentY(mLastTouchY + mScrollY); 6722 if (getSettings().supportTouchOnly()) { 6723 removeTouchHighlight(false); 6724 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6725 // use "0" as generation id to inform WebKit to use the same x/y as 6726 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6727 touchUpData.mMoveGeneration = 0; 6728 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6729 } else if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6730 WebViewCore.MotionUpData motionUpData = new WebViewCore 6731 .MotionUpData(); 6732 motionUpData.mFrame = nativeCacheHitFramePointer(); 6733 motionUpData.mNode = nativeCacheHitNodePointer(); 6734 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6735 motionUpData.mX = contentX; 6736 motionUpData.mY = contentY; 6737 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6738 motionUpData); 6739 } else { 6740 doMotionUp(contentX, contentY); 6741 } 6742 } 6743 6744 private void doMotionUp(int contentX, int contentY) { 6745 if (nativeMotionUp(contentX, contentY, mNavSlop) && mLogEvent) { 6746 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6747 } 6748 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6749 playSoundEffect(SoundEffectConstants.CLICK); 6750 } 6751 } 6752 6753 /** 6754 * Returns plugin bounds if x/y in content coordinates corresponds to a 6755 * plugin. Otherwise a NULL rectangle is returned. 6756 */ 6757 Rect getPluginBounds(int x, int y) { 6758 if (nativePointInNavCache(x, y, mNavSlop) && nativeCacheHitIsPlugin()) { 6759 return nativeCacheHitNodeBounds(); 6760 } else { 6761 return null; 6762 } 6763 } 6764 6765 /* 6766 * Return true if the rect (e.g. plugin) is fully visible and maximized 6767 * inside the WebView. 6768 */ 6769 boolean isRectFitOnScreen(Rect rect) { 6770 final int rectWidth = rect.width(); 6771 final int rectHeight = rect.height(); 6772 final int viewWidth = getViewWidth(); 6773 final int viewHeight = getViewHeightWithTitle(); 6774 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 6775 scale = mZoomManager.computeScaleWithLimits(scale); 6776 return !mZoomManager.willScaleTriggerZoom(scale) 6777 && contentToViewX(rect.left) >= mScrollX 6778 && contentToViewX(rect.right) <= mScrollX + viewWidth 6779 && contentToViewY(rect.top) >= mScrollY 6780 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 6781 } 6782 6783 /* 6784 * Maximize and center the rectangle, specified in the document coordinate 6785 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6786 * animated scroll to center it. If the zoom needs to be changed, find the 6787 * zoom center and do a smooth zoom transition. The rect is in document 6788 * coordinates 6789 */ 6790 void centerFitRect(Rect rect) { 6791 final int rectWidth = rect.width(); 6792 final int rectHeight = rect.height(); 6793 final int viewWidth = getViewWidth(); 6794 final int viewHeight = getViewHeightWithTitle(); 6795 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 6796 / rectHeight); 6797 scale = mZoomManager.computeScaleWithLimits(scale); 6798 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6799 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 6800 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 6801 true, 0); 6802 } else { 6803 float actualScale = mZoomManager.getScale(); 6804 float oldScreenX = rect.left * actualScale - mScrollX; 6805 float rectViewX = rect.left * scale; 6806 float rectViewWidth = rectWidth * scale; 6807 float newMaxWidth = mContentWidth * scale; 6808 float newScreenX = (viewWidth - rectViewWidth) / 2; 6809 // pin the newX to the WebView 6810 if (newScreenX > rectViewX) { 6811 newScreenX = rectViewX; 6812 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6813 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6814 } 6815 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6816 / (scale - actualScale); 6817 float oldScreenY = rect.top * actualScale + getTitleHeight() 6818 - mScrollY; 6819 float rectViewY = rect.top * scale + getTitleHeight(); 6820 float rectViewHeight = rectHeight * scale; 6821 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6822 float newScreenY = (viewHeight - rectViewHeight) / 2; 6823 // pin the newY to the WebView 6824 if (newScreenY > rectViewY) { 6825 newScreenY = rectViewY; 6826 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6827 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6828 } 6829 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6830 / (scale - actualScale); 6831 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6832 mZoomManager.startZoomAnimation(scale, false); 6833 } 6834 } 6835 6836 // Called by JNI to handle a touch on a node representing an email address, 6837 // address, or phone number 6838 private void overrideLoading(String url) { 6839 mCallbackProxy.uiOverrideUrlLoading(url); 6840 } 6841 6842 @Override 6843 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6844 // FIXME: If a subwindow is showing find, and the user touches the 6845 // background window, it can steal focus. 6846 if (mFindIsUp) return false; 6847 boolean result = false; 6848 if (inEditingMode()) { 6849 result = mWebTextView.requestFocus(direction, 6850 previouslyFocusedRect); 6851 } else { 6852 result = super.requestFocus(direction, previouslyFocusedRect); 6853 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 6854 // For cases such as GMail, where we gain focus from a direction, 6855 // we want to move to the first available link. 6856 // FIXME: If there are no visible links, we may not want to 6857 int fakeKeyDirection = 0; 6858 switch(direction) { 6859 case View.FOCUS_UP: 6860 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6861 break; 6862 case View.FOCUS_DOWN: 6863 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6864 break; 6865 case View.FOCUS_LEFT: 6866 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6867 break; 6868 case View.FOCUS_RIGHT: 6869 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6870 break; 6871 default: 6872 return result; 6873 } 6874 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6875 navHandledKey(fakeKeyDirection, 1, true, 0); 6876 } 6877 } 6878 } 6879 return result; 6880 } 6881 6882 @Override 6883 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6884 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6885 6886 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6887 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6888 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6889 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6890 6891 int measuredHeight = heightSize; 6892 int measuredWidth = widthSize; 6893 6894 // Grab the content size from WebViewCore. 6895 int contentHeight = contentToViewDimension(mContentHeight); 6896 int contentWidth = contentToViewDimension(mContentWidth); 6897 6898// Log.d(LOGTAG, "------- measure " + heightMode); 6899 6900 if (heightMode != MeasureSpec.EXACTLY) { 6901 mHeightCanMeasure = true; 6902 measuredHeight = contentHeight; 6903 if (heightMode == MeasureSpec.AT_MOST) { 6904 // If we are larger than the AT_MOST height, then our height can 6905 // no longer be measured and we should scroll internally. 6906 if (measuredHeight > heightSize) { 6907 measuredHeight = heightSize; 6908 mHeightCanMeasure = false; 6909 } else if (measuredHeight < heightSize) { 6910 measuredHeight |= MEASURED_STATE_TOO_SMALL; 6911 } 6912 } 6913 } else { 6914 mHeightCanMeasure = false; 6915 } 6916 if (mNativeClass != 0) { 6917 nativeSetHeightCanMeasure(mHeightCanMeasure); 6918 } 6919 // For the width, always use the given size unless unspecified. 6920 if (widthMode == MeasureSpec.UNSPECIFIED) { 6921 mWidthCanMeasure = true; 6922 measuredWidth = contentWidth; 6923 } else { 6924 if (measuredWidth < contentWidth) { 6925 measuredWidth |= MEASURED_STATE_TOO_SMALL; 6926 } 6927 mWidthCanMeasure = false; 6928 } 6929 6930 synchronized (this) { 6931 setMeasuredDimension(measuredWidth, measuredHeight); 6932 } 6933 } 6934 6935 @Override 6936 public boolean requestChildRectangleOnScreen(View child, 6937 Rect rect, 6938 boolean immediate) { 6939 if (mNativeClass == 0) { 6940 return false; 6941 } 6942 // don't scroll while in zoom animation. When it is done, we will adjust 6943 // the necessary components (e.g., WebTextView if it is in editing mode) 6944 if (mZoomManager.isFixedLengthAnimationInProgress()) { 6945 return false; 6946 } 6947 6948 rect.offset(child.getLeft() - child.getScrollX(), 6949 child.getTop() - child.getScrollY()); 6950 6951 Rect content = new Rect(viewToContentX(mScrollX), 6952 viewToContentY(mScrollY), 6953 viewToContentX(mScrollX + getWidth() 6954 - getVerticalScrollbarWidth()), 6955 viewToContentY(mScrollY + getViewHeightWithTitle())); 6956 content = nativeSubtractLayers(content); 6957 int screenTop = contentToViewY(content.top); 6958 int screenBottom = contentToViewY(content.bottom); 6959 int height = screenBottom - screenTop; 6960 int scrollYDelta = 0; 6961 6962 if (rect.bottom > screenBottom) { 6963 int oneThirdOfScreenHeight = height / 3; 6964 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6965 // If the rectangle is too tall to fit in the bottom two thirds 6966 // of the screen, place it at the top. 6967 scrollYDelta = rect.top - screenTop; 6968 } else { 6969 // If the rectangle will still fit on screen, we want its 6970 // top to be in the top third of the screen. 6971 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6972 } 6973 } else if (rect.top < screenTop) { 6974 scrollYDelta = rect.top - screenTop; 6975 } 6976 6977 int screenLeft = contentToViewX(content.left); 6978 int screenRight = contentToViewX(content.right); 6979 int width = screenRight - screenLeft; 6980 int scrollXDelta = 0; 6981 6982 if (rect.right > screenRight && rect.left > screenLeft) { 6983 if (rect.width() > width) { 6984 scrollXDelta += (rect.left - screenLeft); 6985 } else { 6986 scrollXDelta += (rect.right - screenRight); 6987 } 6988 } else if (rect.left < screenLeft) { 6989 scrollXDelta -= (screenLeft - rect.left); 6990 } 6991 6992 if ((scrollYDelta | scrollXDelta) != 0) { 6993 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6994 } 6995 6996 return false; 6997 } 6998 6999 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7000 String replace, int newStart, int newEnd) { 7001 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7002 arg.mReplace = replace; 7003 arg.mNewStart = newStart; 7004 arg.mNewEnd = newEnd; 7005 mTextGeneration++; 7006 arg.mTextGeneration = mTextGeneration; 7007 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7008 } 7009 7010 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7011 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7012 arg.mEvent = event; 7013 arg.mCurrentText = currentText; 7014 // Increase our text generation number, and pass it to webcore thread 7015 mTextGeneration++; 7016 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7017 // WebKit's document state is not saved until about to leave the page. 7018 // To make sure the host application, like Browser, has the up to date 7019 // document state when it goes to background, we force to save the 7020 // document state. 7021 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7022 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7023 cursorData(), 1000); 7024 } 7025 7026 /* package */ synchronized WebViewCore getWebViewCore() { 7027 return mWebViewCore; 7028 } 7029 7030 //------------------------------------------------------------------------- 7031 // Methods can be called from a separate thread, like WebViewCore 7032 // If it needs to call the View system, it has to send message. 7033 //------------------------------------------------------------------------- 7034 7035 /** 7036 * General handler to receive message coming from webkit thread 7037 */ 7038 class PrivateHandler extends Handler { 7039 @Override 7040 public void handleMessage(Message msg) { 7041 // exclude INVAL_RECT_MSG_ID since it is frequently output 7042 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 7043 if (msg.what >= FIRST_PRIVATE_MSG_ID 7044 && msg.what <= LAST_PRIVATE_MSG_ID) { 7045 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 7046 - FIRST_PRIVATE_MSG_ID]); 7047 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 7048 && msg.what <= LAST_PACKAGE_MSG_ID) { 7049 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 7050 - FIRST_PACKAGE_MSG_ID]); 7051 } else { 7052 Log.v(LOGTAG, Integer.toString(msg.what)); 7053 } 7054 } 7055 if (mWebViewCore == null) { 7056 // after WebView's destroy() is called, skip handling messages. 7057 return; 7058 } 7059 switch (msg.what) { 7060 case REMEMBER_PASSWORD: { 7061 mDatabase.setUsernamePassword( 7062 msg.getData().getString("host"), 7063 msg.getData().getString("username"), 7064 msg.getData().getString("password")); 7065 ((Message) msg.obj).sendToTarget(); 7066 break; 7067 } 7068 case NEVER_REMEMBER_PASSWORD: { 7069 mDatabase.setUsernamePassword( 7070 msg.getData().getString("host"), null, null); 7071 ((Message) msg.obj).sendToTarget(); 7072 break; 7073 } 7074 case PREVENT_DEFAULT_TIMEOUT: { 7075 // if timeout happens, cancel it so that it won't block UI 7076 // to continue handling touch events 7077 if ((msg.arg1 == MotionEvent.ACTION_DOWN 7078 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 7079 || (msg.arg1 == MotionEvent.ACTION_MOVE 7080 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 7081 cancelWebCoreTouchEvent( 7082 viewToContentX(mLastTouchX + mScrollX), 7083 viewToContentY(mLastTouchY + mScrollY), 7084 true); 7085 } 7086 break; 7087 } 7088 case SCROLL_SELECT_TEXT: { 7089 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 7090 mSentAutoScrollMessage = false; 7091 break; 7092 } 7093 if (mScrollingLayer == 0) { 7094 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 7095 } else { 7096 mScrollingLayerRect.left += mAutoScrollX; 7097 mScrollingLayerRect.top += mAutoScrollY; 7098 nativeScrollLayer(mScrollingLayer, 7099 mScrollingLayerRect.left, 7100 mScrollingLayerRect.top); 7101 invalidate(); 7102 } 7103 sendEmptyMessageDelayed( 7104 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 7105 break; 7106 } 7107 case SWITCH_TO_SHORTPRESS: { 7108 mInitialHitTestResult = null; // set by updateSelection() 7109 if (mTouchMode == TOUCH_INIT_MODE) { 7110 if (!getSettings().supportTouchOnly() 7111 && mPreventDefault != PREVENT_DEFAULT_YES) { 7112 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 7113 updateSelection(); 7114 } else { 7115 // set to TOUCH_SHORTPRESS_MODE so that it won't 7116 // trigger double tap any more 7117 mTouchMode = TOUCH_SHORTPRESS_MODE; 7118 } 7119 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 7120 mTouchMode = TOUCH_DONE_MODE; 7121 } 7122 break; 7123 } 7124 case SWITCH_TO_LONGPRESS: { 7125 if (getSettings().supportTouchOnly()) { 7126 removeTouchHighlight(false); 7127 } 7128 if (inFullScreenMode() || mDeferTouchProcess) { 7129 TouchEventData ted = new TouchEventData(); 7130 ted.mAction = WebViewCore.ACTION_LONGPRESS; 7131 ted.mIds = new int[1]; 7132 ted.mIds[0] = 0; 7133 ted.mPoints = new Point[1]; 7134 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 7135 viewToContentY(mLastTouchY + mScrollY)); 7136 // metaState for long press is tricky. Should it be the 7137 // state when the press started or when the press was 7138 // released? Or some intermediary key state? For 7139 // simplicity for now, we don't set it. 7140 ted.mMetaState = 0; 7141 ted.mReprocess = mDeferTouchProcess; 7142 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7143 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 7144 mTouchMode = TOUCH_DONE_MODE; 7145 performLongClick(); 7146 } 7147 break; 7148 } 7149 case RELEASE_SINGLE_TAP: { 7150 doShortPress(); 7151 break; 7152 } 7153 case SCROLL_TO_MSG_ID: { 7154 // arg1 = animate, arg2 = onlyIfImeIsShowing 7155 // obj = Point(x, y) 7156 if (msg.arg2 == 1) { 7157 // This scroll is intended to bring the textfield into 7158 // view, but is only necessary if the IME is showing 7159 InputMethodManager imm = InputMethodManager.peekInstance(); 7160 if (imm == null || !imm.isAcceptingText() 7161 || (!imm.isActive(WebView.this) && (!inEditingMode() 7162 || !imm.isActive(mWebTextView)))) { 7163 break; 7164 } 7165 } 7166 final Point p = (Point) msg.obj; 7167 if (msg.arg1 == 1) { 7168 spawnContentScrollTo(p.x, p.y); 7169 } else { 7170 setContentScrollTo(p.x, p.y); 7171 } 7172 break; 7173 } 7174 case UPDATE_ZOOM_RANGE: { 7175 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 7176 // mScrollX contains the new minPrefWidth 7177 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 7178 break; 7179 } 7180 case REPLACE_BASE_CONTENT: { 7181 nativeReplaceBaseContent(msg.arg1); 7182 break; 7183 } 7184 case NEW_PICTURE_MSG_ID: { 7185 // called for new content 7186 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 7187 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion.getBounds()); 7188 final Point viewSize = draw.mViewSize; 7189 WebViewCore.ViewState viewState = draw.mViewState; 7190 boolean isPictureAfterFirstLayout = viewState != null; 7191 if (isPictureAfterFirstLayout) { 7192 // Reset the last sent data here since dealing with new page. 7193 mLastWidthSent = 0; 7194 mZoomManager.onFirstLayout(draw); 7195 if (!mDrawHistory) { 7196 // Do not send the scroll event for this particular 7197 // scroll message. Note that a scroll event may 7198 // still be fired if the user scrolls before the 7199 // message can be handled. 7200 mSendScrollEvent = false; 7201 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 7202 mSendScrollEvent = true; 7203 7204 // As we are on a new page, remove the WebTextView. This 7205 // is necessary for page loads driven by webkit, and in 7206 // particular when the user was on a password field, so 7207 // the WebTextView was visible. 7208 clearTextEntry(); 7209 } 7210 } 7211 7212 // We update the layout (i.e. request a layout from the 7213 // view system) if the last view size that we sent to 7214 // WebCore matches the view size of the picture we just 7215 // received in the fixed dimension. 7216 final boolean updateLayout = viewSize.x == mLastWidthSent 7217 && viewSize.y == mLastHeightSent; 7218 // Don't send scroll event for picture coming from webkit, 7219 // since the new picture may cause a scroll event to override 7220 // the saved history scroll position. 7221 mSendScrollEvent = false; 7222 recordNewContentSize(draw.mContentSize.x, 7223 draw.mContentSize.y, updateLayout); 7224 mSendScrollEvent = true; 7225 if (DebugFlags.WEB_VIEW) { 7226 Rect b = draw.mInvalRegion.getBounds(); 7227 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 7228 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 7229 } 7230 invalidateContentRect(draw.mInvalRegion.getBounds()); 7231 7232 if (mPictureListener != null) { 7233 mPictureListener.onNewPicture(WebView.this, capturePicture()); 7234 } 7235 7236 // update the zoom information based on the new picture 7237 mZoomManager.onNewPicture(draw); 7238 7239 if (draw.mFocusSizeChanged && inEditingMode()) { 7240 mFocusSizeChanged = true; 7241 } 7242 if (isPictureAfterFirstLayout) { 7243 mViewManager.postReadyToDrawAll(); 7244 } 7245 break; 7246 } 7247 case WEBCORE_INITIALIZED_MSG_ID: 7248 // nativeCreate sets mNativeClass to a non-zero value 7249 nativeCreate(msg.arg1); 7250 break; 7251 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 7252 // Make sure that the textfield is currently focused 7253 // and representing the same node as the pointer. 7254 if (inEditingMode() && 7255 mWebTextView.isSameTextField(msg.arg1)) { 7256 if (msg.getData().getBoolean("password")) { 7257 Spannable text = (Spannable) mWebTextView.getText(); 7258 int start = Selection.getSelectionStart(text); 7259 int end = Selection.getSelectionEnd(text); 7260 mWebTextView.setInPassword(true); 7261 // Restore the selection, which may have been 7262 // ruined by setInPassword. 7263 Spannable pword = 7264 (Spannable) mWebTextView.getText(); 7265 Selection.setSelection(pword, start, end); 7266 // If the text entry has created more events, ignore 7267 // this one. 7268 } else if (msg.arg2 == mTextGeneration) { 7269 String text = (String) msg.obj; 7270 if (null == text) { 7271 text = ""; 7272 } 7273 mWebTextView.setTextAndKeepSelection(text); 7274 } 7275 } 7276 break; 7277 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 7278 displaySoftKeyboard(true); 7279 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 7280 case UPDATE_TEXT_SELECTION_MSG_ID: 7281 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 7282 (WebViewCore.TextSelectionData) msg.obj); 7283 break; 7284 case FORM_DID_BLUR: 7285 if (inEditingMode() 7286 && mWebTextView.isSameTextField(msg.arg1)) { 7287 hideSoftKeyboard(); 7288 } 7289 break; 7290 case RETURN_LABEL: 7291 if (inEditingMode() 7292 && mWebTextView.isSameTextField(msg.arg1)) { 7293 mWebTextView.setHint((String) msg.obj); 7294 InputMethodManager imm 7295 = InputMethodManager.peekInstance(); 7296 // The hint is propagated to the IME in 7297 // onCreateInputConnection. If the IME is already 7298 // active, restart it so that its hint text is updated. 7299 if (imm != null && imm.isActive(mWebTextView)) { 7300 imm.restartInput(mWebTextView); 7301 } 7302 } 7303 break; 7304 case UNHANDLED_NAV_KEY: 7305 navHandledKey(msg.arg1, 1, false, 0); 7306 break; 7307 case UPDATE_TEXT_ENTRY_MSG_ID: 7308 // this is sent after finishing resize in WebViewCore. Make 7309 // sure the text edit box is still on the screen. 7310 if (inEditingMode() && nativeCursorIsTextInput()) { 7311 rebuildWebTextView(); 7312 } 7313 break; 7314 case CLEAR_TEXT_ENTRY: 7315 clearTextEntry(); 7316 break; 7317 case INVAL_RECT_MSG_ID: { 7318 Rect r = (Rect)msg.obj; 7319 if (r == null) { 7320 invalidate(); 7321 } else { 7322 // we need to scale r from content into view coords, 7323 // which viewInvalidate() does for us 7324 viewInvalidate(r.left, r.top, r.right, r.bottom); 7325 } 7326 break; 7327 } 7328 case REQUEST_FORM_DATA: 7329 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7330 if (mWebTextView.isSameTextField(msg.arg1)) { 7331 mWebTextView.setAdapterCustom(adapter); 7332 } 7333 break; 7334 case RESUME_WEBCORE_PRIORITY: 7335 WebViewCore.resumePriority(); 7336 WebViewCore.resumeUpdatePicture(mWebViewCore); 7337 break; 7338 7339 case LONG_PRESS_CENTER: 7340 // as this is shared by keydown and trackballdown, reset all 7341 // the states 7342 mGotCenterDown = false; 7343 mTrackballDown = false; 7344 performLongClick(); 7345 break; 7346 7347 case WEBCORE_NEED_TOUCH_EVENTS: 7348 mForwardTouchEvents = (msg.arg1 != 0); 7349 break; 7350 7351 case PREVENT_TOUCH_ID: 7352 if (inFullScreenMode()) { 7353 break; 7354 } 7355 if (msg.obj == null) { 7356 if (msg.arg1 == MotionEvent.ACTION_DOWN 7357 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7358 // if prevent default is called from WebCore, UI 7359 // will not handle the rest of the touch events any 7360 // more. 7361 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7362 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7363 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 7364 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7365 // the return for the first ACTION_MOVE will decide 7366 // whether UI will handle touch or not. Currently no 7367 // support for alternating prevent default 7368 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7369 : PREVENT_DEFAULT_NO; 7370 } 7371 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7372 mTouchHighlightRegion.setEmpty(); 7373 } 7374 } else { 7375 TouchEventData ted = (TouchEventData) msg.obj; 7376 7377 if (ted.mPoints.length > 1) { // multi-touch 7378 if (ted.mAction == MotionEvent.ACTION_POINTER_UP) { 7379 mIsHandlingMultiTouch = false; 7380 } 7381 if (msg.arg2 == 0) { 7382 mPreventDefault = PREVENT_DEFAULT_NO; 7383 handleMultiTouchInWebView(ted.mMotionEvent); 7384 } else { 7385 mPreventDefault = PREVENT_DEFAULT_YES; 7386 } 7387 break; 7388 } 7389 7390 // prevent default is not called in WebCore, so the 7391 // message needs to be reprocessed in UI 7392 if (msg.arg2 == 0) { 7393 // Following is for single touch. 7394 switch (ted.mAction) { 7395 case MotionEvent.ACTION_DOWN: 7396 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 7397 - mScrollX; 7398 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 7399 - mScrollY; 7400 mDeferTouchMode = TOUCH_INIT_MODE; 7401 break; 7402 case MotionEvent.ACTION_MOVE: { 7403 // no snapping in defer process 7404 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 7405 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 7406 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7407 mDeferTouchMode = TOUCH_DRAG_MODE; 7408 mLastDeferTouchX = x; 7409 mLastDeferTouchY = y; 7410 startScrollingLayer(x, y); 7411 startDrag(); 7412 } 7413 int deltaX = pinLocX((int) (mScrollX 7414 + mLastDeferTouchX - x)) 7415 - mScrollX; 7416 int deltaY = pinLocY((int) (mScrollY 7417 + mLastDeferTouchY - y)) 7418 - mScrollY; 7419 doDrag(deltaX, deltaY); 7420 if (deltaX != 0) mLastDeferTouchX = x; 7421 if (deltaY != 0) mLastDeferTouchY = y; 7422 break; 7423 } 7424 case MotionEvent.ACTION_UP: 7425 case MotionEvent.ACTION_CANCEL: 7426 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7427 // no fling in defer process 7428 mScroller.springBack(mScrollX, mScrollY, 0, 7429 computeMaxScrollX(), 0, 7430 computeMaxScrollY()); 7431 invalidate(); 7432 WebViewCore.resumePriority(); 7433 WebViewCore.resumeUpdatePicture(mWebViewCore); 7434 } 7435 mDeferTouchMode = TOUCH_DONE_MODE; 7436 break; 7437 case WebViewCore.ACTION_DOUBLETAP: 7438 // doDoubleTap() needs mLastTouchX/Y as anchor 7439 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 7440 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 7441 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7442 mDeferTouchMode = TOUCH_DONE_MODE; 7443 break; 7444 case WebViewCore.ACTION_LONGPRESS: 7445 HitTestResult hitTest = getHitTestResult(); 7446 if (hitTest != null && hitTest.mType 7447 != HitTestResult.UNKNOWN_TYPE) { 7448 performLongClick(); 7449 } 7450 mDeferTouchMode = TOUCH_DONE_MODE; 7451 break; 7452 } 7453 } 7454 } 7455 break; 7456 7457 case REQUEST_KEYBOARD: 7458 if (msg.arg1 == 0) { 7459 hideSoftKeyboard(); 7460 } else { 7461 displaySoftKeyboard(false); 7462 } 7463 break; 7464 7465 case FIND_AGAIN: 7466 // Ignore if find has been dismissed. 7467 if (mFindIsUp && mFindCallback != null) { 7468 mFindCallback.findAll(); 7469 } 7470 break; 7471 7472 case DRAG_HELD_MOTIONLESS: 7473 mHeldMotionless = MOTIONLESS_TRUE; 7474 invalidate(); 7475 // fall through to keep scrollbars awake 7476 7477 case AWAKEN_SCROLL_BARS: 7478 if (mTouchMode == TOUCH_DRAG_MODE 7479 && mHeldMotionless == MOTIONLESS_TRUE) { 7480 awakenScrollBars(ViewConfiguration 7481 .getScrollDefaultDelay(), false); 7482 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7483 .obtainMessage(AWAKEN_SCROLL_BARS), 7484 ViewConfiguration.getScrollDefaultDelay()); 7485 } 7486 break; 7487 7488 case DO_MOTION_UP: 7489 doMotionUp(msg.arg1, msg.arg2); 7490 break; 7491 7492 case SCREEN_ON: 7493 setKeepScreenOn(msg.arg1 == 1); 7494 break; 7495 7496 case SHOW_FULLSCREEN: { 7497 View view = (View) msg.obj; 7498 int npp = msg.arg1; 7499 7500 if (inFullScreenMode()) { 7501 Log.w(LOGTAG, "Should not have another full screen."); 7502 dismissFullScreenMode(); 7503 } 7504 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7505 mFullScreenHolder.setContentView(view); 7506 mFullScreenHolder.setCancelable(false); 7507 mFullScreenHolder.setCanceledOnTouchOutside(false); 7508 mFullScreenHolder.show(); 7509 7510 break; 7511 } 7512 case HIDE_FULLSCREEN: 7513 dismissFullScreenMode(); 7514 break; 7515 7516 case DOM_FOCUS_CHANGED: 7517 if (inEditingMode()) { 7518 nativeClearCursor(); 7519 rebuildWebTextView(); 7520 } 7521 break; 7522 7523 case SHOW_RECT_MSG_ID: { 7524 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7525 int x = mScrollX; 7526 int left = contentToViewX(data.mLeft); 7527 int width = contentToViewDimension(data.mWidth); 7528 int maxWidth = contentToViewDimension(data.mContentWidth); 7529 int viewWidth = getViewWidth(); 7530 if (width < viewWidth) { 7531 // center align 7532 x += left + width / 2 - mScrollX - viewWidth / 2; 7533 } else { 7534 x += (int) (left + data.mXPercentInDoc * width 7535 - mScrollX - data.mXPercentInView * viewWidth); 7536 } 7537 if (DebugFlags.WEB_VIEW) { 7538 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7539 width + ",maxWidth=" + maxWidth + 7540 ",viewWidth=" + viewWidth + ",x=" 7541 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7542 ",xPercentInView=" + data.mXPercentInView+ ")"); 7543 } 7544 // use the passing content width to cap x as the current 7545 // mContentWidth may not be updated yet 7546 x = Math.max(0, 7547 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7548 int top = contentToViewY(data.mTop); 7549 int height = contentToViewDimension(data.mHeight); 7550 int maxHeight = contentToViewDimension(data.mContentHeight); 7551 int viewHeight = getViewHeight(); 7552 int y = (int) (top + data.mYPercentInDoc * height - 7553 data.mYPercentInView * viewHeight); 7554 if (DebugFlags.WEB_VIEW) { 7555 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7556 height + ",maxHeight=" + maxHeight + 7557 ",viewHeight=" + viewHeight + ",y=" 7558 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7559 ",yPercentInView=" + data.mYPercentInView+ ")"); 7560 } 7561 // use the passing content height to cap y as the current 7562 // mContentHeight may not be updated yet 7563 y = Math.max(0, 7564 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7565 // We need to take into account the visible title height 7566 // when scrolling since y is an absolute view position. 7567 y = Math.max(0, y - getVisibleTitleHeight()); 7568 scrollTo(x, y); 7569 } 7570 break; 7571 7572 case CENTER_FIT_RECT: 7573 centerFitRect((Rect)msg.obj); 7574 break; 7575 7576 case SET_SCROLLBAR_MODES: 7577 mHorizontalScrollBarMode = msg.arg1; 7578 mVerticalScrollBarMode = msg.arg2; 7579 break; 7580 7581 case SELECTION_STRING_CHANGED: 7582 if (mAccessibilityInjector != null) { 7583 String selectionString = (String) msg.obj; 7584 mAccessibilityInjector.onSelectionStringChange(selectionString); 7585 } 7586 break; 7587 7588 case SET_TOUCH_HIGHLIGHT_RECTS: 7589 invalidate(mTouchHighlightRegion.getBounds()); 7590 mTouchHighlightRegion.setEmpty(); 7591 if (msg.obj != null) { 7592 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 7593 for (Rect rect : rects) { 7594 Rect viewRect = contentToViewRect(rect); 7595 // some sites, like stories in nytimes.com, set 7596 // mouse event handler in the top div. It is not 7597 // user friendly to highlight the div if it covers 7598 // more than half of the screen. 7599 if (viewRect.width() < getWidth() >> 1 7600 || viewRect.height() < getHeight() >> 1) { 7601 mTouchHighlightRegion.union(viewRect); 7602 invalidate(viewRect); 7603 } else { 7604 Log.w(LOGTAG, "Skip the huge selection rect:" 7605 + viewRect); 7606 } 7607 } 7608 } 7609 break; 7610 7611 case SAVE_WEBARCHIVE_FINISHED: 7612 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7613 if (saveMessage.mCallback != null) { 7614 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7615 } 7616 break; 7617 7618 case SET_AUTOFILLABLE: 7619 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 7620 if (mWebTextView != null) { 7621 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 7622 rebuildWebTextView(); 7623 } 7624 break; 7625 7626 case AUTOFILL_COMPLETE: 7627 if (mWebTextView != null) { 7628 // Clear the WebTextView adapter when AutoFill finishes 7629 // so that the drop down gets cleared. 7630 mWebTextView.setAdapterCustom(null); 7631 } 7632 break; 7633 7634 case SELECT_AT: 7635 nativeSelectAt(msg.arg1, msg.arg2); 7636 break; 7637 7638 default: 7639 super.handleMessage(msg); 7640 break; 7641 } 7642 } 7643 } 7644 7645 /** 7646 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7647 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7648 */ 7649 private void updateTextSelectionFromMessage(int nodePointer, 7650 int textGeneration, WebViewCore.TextSelectionData data) { 7651 if (inEditingMode() 7652 && mWebTextView.isSameTextField(nodePointer) 7653 && textGeneration == mTextGeneration) { 7654 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7655 } 7656 } 7657 7658 // Class used to use a dropdown for a <select> element 7659 private class InvokeListBox implements Runnable { 7660 // Whether the listbox allows multiple selection. 7661 private boolean mMultiple; 7662 // Passed in to a list with multiple selection to tell 7663 // which items are selected. 7664 private int[] mSelectedArray; 7665 // Passed in to a list with single selection to tell 7666 // where the initial selection is. 7667 private int mSelection; 7668 7669 private Container[] mContainers; 7670 7671 // Need these to provide stable ids to my ArrayAdapter, 7672 // which normally does not have stable ids. (Bug 1250098) 7673 private class Container extends Object { 7674 /** 7675 * Possible values for mEnabled. Keep in sync with OptionStatus in 7676 * WebViewCore.cpp 7677 */ 7678 final static int OPTGROUP = -1; 7679 final static int OPTION_DISABLED = 0; 7680 final static int OPTION_ENABLED = 1; 7681 7682 String mString; 7683 int mEnabled; 7684 int mId; 7685 7686 public String toString() { 7687 return mString; 7688 } 7689 } 7690 7691 /** 7692 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7693 * and allow filtering. 7694 */ 7695 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7696 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7697 super(context, 7698 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7699 com.android.internal.R.layout.select_dialog_singlechoice, 7700 objects); 7701 } 7702 7703 @Override 7704 public View getView(int position, View convertView, 7705 ViewGroup parent) { 7706 // Always pass in null so that we will get a new CheckedTextView 7707 // Otherwise, an item which was previously used as an <optgroup> 7708 // element (i.e. has no check), could get used as an <option> 7709 // element, which needs a checkbox/radio, but it would not have 7710 // one. 7711 convertView = super.getView(position, null, parent); 7712 Container c = item(position); 7713 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7714 // ListView does not draw dividers between disabled and 7715 // enabled elements. Use a LinearLayout to provide dividers 7716 LinearLayout layout = new LinearLayout(mContext); 7717 layout.setOrientation(LinearLayout.VERTICAL); 7718 if (position > 0) { 7719 View dividerTop = new View(mContext); 7720 dividerTop.setBackgroundResource( 7721 android.R.drawable.divider_horizontal_bright); 7722 layout.addView(dividerTop); 7723 } 7724 7725 if (Container.OPTGROUP == c.mEnabled) { 7726 // Currently select_dialog_multichoice and 7727 // select_dialog_singlechoice are CheckedTextViews. If 7728 // that changes, the class cast will no longer be valid. 7729 Assert.assertTrue( 7730 convertView instanceof CheckedTextView); 7731 ((CheckedTextView) convertView).setCheckMarkDrawable( 7732 null); 7733 } else { 7734 // c.mEnabled == Container.OPTION_DISABLED 7735 // Draw the disabled element in a disabled state. 7736 convertView.setEnabled(false); 7737 } 7738 7739 layout.addView(convertView); 7740 if (position < getCount() - 1) { 7741 View dividerBottom = new View(mContext); 7742 dividerBottom.setBackgroundResource( 7743 android.R.drawable.divider_horizontal_bright); 7744 layout.addView(dividerBottom); 7745 } 7746 return layout; 7747 } 7748 return convertView; 7749 } 7750 7751 @Override 7752 public boolean hasStableIds() { 7753 // AdapterView's onChanged method uses this to determine whether 7754 // to restore the old state. Return false so that the old (out 7755 // of date) state does not replace the new, valid state. 7756 return false; 7757 } 7758 7759 private Container item(int position) { 7760 if (position < 0 || position >= getCount()) { 7761 return null; 7762 } 7763 return (Container) getItem(position); 7764 } 7765 7766 @Override 7767 public long getItemId(int position) { 7768 Container item = item(position); 7769 if (item == null) { 7770 return -1; 7771 } 7772 return item.mId; 7773 } 7774 7775 @Override 7776 public boolean areAllItemsEnabled() { 7777 return false; 7778 } 7779 7780 @Override 7781 public boolean isEnabled(int position) { 7782 Container item = item(position); 7783 if (item == null) { 7784 return false; 7785 } 7786 return Container.OPTION_ENABLED == item.mEnabled; 7787 } 7788 } 7789 7790 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7791 mMultiple = true; 7792 mSelectedArray = selected; 7793 7794 int length = array.length; 7795 mContainers = new Container[length]; 7796 for (int i = 0; i < length; i++) { 7797 mContainers[i] = new Container(); 7798 mContainers[i].mString = array[i]; 7799 mContainers[i].mEnabled = enabled[i]; 7800 mContainers[i].mId = i; 7801 } 7802 } 7803 7804 private InvokeListBox(String[] array, int[] enabled, int selection) { 7805 mSelection = selection; 7806 mMultiple = false; 7807 7808 int length = array.length; 7809 mContainers = new Container[length]; 7810 for (int i = 0; i < length; i++) { 7811 mContainers[i] = new Container(); 7812 mContainers[i].mString = array[i]; 7813 mContainers[i].mEnabled = enabled[i]; 7814 mContainers[i].mId = i; 7815 } 7816 } 7817 7818 /* 7819 * Whenever the data set changes due to filtering, this class ensures 7820 * that the checked item remains checked. 7821 */ 7822 private class SingleDataSetObserver extends DataSetObserver { 7823 private long mCheckedId; 7824 private ListView mListView; 7825 private Adapter mAdapter; 7826 7827 /* 7828 * Create a new observer. 7829 * @param id The ID of the item to keep checked. 7830 * @param l ListView for getting and clearing the checked states 7831 * @param a Adapter for getting the IDs 7832 */ 7833 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7834 mCheckedId = id; 7835 mListView = l; 7836 mAdapter = a; 7837 } 7838 7839 public void onChanged() { 7840 // The filter may have changed which item is checked. Find the 7841 // item that the ListView thinks is checked. 7842 int position = mListView.getCheckedItemPosition(); 7843 long id = mAdapter.getItemId(position); 7844 if (mCheckedId != id) { 7845 // Clear the ListView's idea of the checked item, since 7846 // it is incorrect 7847 mListView.clearChoices(); 7848 // Search for mCheckedId. If it is in the filtered list, 7849 // mark it as checked 7850 int count = mAdapter.getCount(); 7851 for (int i = 0; i < count; i++) { 7852 if (mAdapter.getItemId(i) == mCheckedId) { 7853 mListView.setItemChecked(i, true); 7854 break; 7855 } 7856 } 7857 } 7858 } 7859 7860 public void onInvalidate() {} 7861 } 7862 7863 public void run() { 7864 final ListView listView = (ListView) LayoutInflater.from(mContext) 7865 .inflate(com.android.internal.R.layout.select_dialog, null); 7866 final MyArrayListAdapter adapter = new 7867 MyArrayListAdapter(mContext, mContainers, mMultiple); 7868 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7869 .setView(listView).setCancelable(true) 7870 .setInverseBackgroundForced(true); 7871 7872 if (mMultiple) { 7873 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7874 public void onClick(DialogInterface dialog, int which) { 7875 mWebViewCore.sendMessage( 7876 EventHub.LISTBOX_CHOICES, 7877 adapter.getCount(), 0, 7878 listView.getCheckedItemPositions()); 7879 }}); 7880 b.setNegativeButton(android.R.string.cancel, 7881 new DialogInterface.OnClickListener() { 7882 public void onClick(DialogInterface dialog, int which) { 7883 mWebViewCore.sendMessage( 7884 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7885 }}); 7886 } 7887 mListBoxDialog = b.create(); 7888 listView.setAdapter(adapter); 7889 listView.setFocusableInTouchMode(true); 7890 // There is a bug (1250103) where the checks in a ListView with 7891 // multiple items selected are associated with the positions, not 7892 // the ids, so the items do not properly retain their checks when 7893 // filtered. Do not allow filtering on multiple lists until 7894 // that bug is fixed. 7895 7896 listView.setTextFilterEnabled(!mMultiple); 7897 if (mMultiple) { 7898 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7899 int length = mSelectedArray.length; 7900 for (int i = 0; i < length; i++) { 7901 listView.setItemChecked(mSelectedArray[i], true); 7902 } 7903 } else { 7904 listView.setOnItemClickListener(new OnItemClickListener() { 7905 public void onItemClick(AdapterView parent, View v, 7906 int position, long id) { 7907 // Rather than sending the message right away, send it 7908 // after the page regains focus. 7909 mListBoxMessage = Message.obtain(null, 7910 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 7911 mListBoxDialog.dismiss(); 7912 mListBoxDialog = null; 7913 } 7914 }); 7915 if (mSelection != -1) { 7916 listView.setSelection(mSelection); 7917 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7918 listView.setItemChecked(mSelection, true); 7919 DataSetObserver observer = new SingleDataSetObserver( 7920 adapter.getItemId(mSelection), listView, adapter); 7921 adapter.registerDataSetObserver(observer); 7922 } 7923 } 7924 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7925 public void onCancel(DialogInterface dialog) { 7926 mWebViewCore.sendMessage( 7927 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7928 mListBoxDialog = null; 7929 } 7930 }); 7931 mListBoxDialog.show(); 7932 } 7933 } 7934 7935 private Message mListBoxMessage; 7936 7937 /* 7938 * Request a dropdown menu for a listbox with multiple selection. 7939 * 7940 * @param array Labels for the listbox. 7941 * @param enabledArray State for each element in the list. See static 7942 * integers in Container class. 7943 * @param selectedArray Which positions are initally selected. 7944 */ 7945 void requestListBox(String[] array, int[] enabledArray, int[] 7946 selectedArray) { 7947 mPrivateHandler.post( 7948 new InvokeListBox(array, enabledArray, selectedArray)); 7949 } 7950 7951 /* 7952 * Request a dropdown menu for a listbox with single selection or a single 7953 * <select> element. 7954 * 7955 * @param array Labels for the listbox. 7956 * @param enabledArray State for each element in the list. See static 7957 * integers in Container class. 7958 * @param selection Which position is initally selected. 7959 */ 7960 void requestListBox(String[] array, int[] enabledArray, int selection) { 7961 mPrivateHandler.post( 7962 new InvokeListBox(array, enabledArray, selection)); 7963 } 7964 7965 // called by JNI 7966 private void sendMoveFocus(int frame, int node) { 7967 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7968 new WebViewCore.CursorData(frame, node, 0, 0)); 7969 } 7970 7971 // called by JNI 7972 private void sendMoveMouse(int frame, int node, int x, int y) { 7973 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7974 new WebViewCore.CursorData(frame, node, x, y)); 7975 } 7976 7977 /* 7978 * Send a mouse move event to the webcore thread. 7979 * 7980 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7981 * which wants key events, but it is not the focus. This 7982 * will make the visual appear as though nothing is in 7983 * focus. Remove the WebTextView, if present, and stop 7984 * drawing the blinking caret. 7985 * called by JNI 7986 */ 7987 private void sendMoveMouseIfLatest(boolean removeFocus) { 7988 if (removeFocus) { 7989 clearTextEntry(); 7990 } 7991 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7992 cursorData()); 7993 } 7994 7995 /** 7996 * Called by JNI to send a message to the webcore thread that the user 7997 * touched the webpage. 7998 * @param touchGeneration Generation number of the touch, to ignore touches 7999 * after a new one has been generated. 8000 * @param frame Pointer to the frame holding the node that was touched. 8001 * @param node Pointer to the node touched. 8002 * @param x x-position of the touch. 8003 * @param y y-position of the touch. 8004 */ 8005 private void sendMotionUp(int touchGeneration, 8006 int frame, int node, int x, int y) { 8007 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 8008 touchUpData.mMoveGeneration = touchGeneration; 8009 touchUpData.mFrame = frame; 8010 touchUpData.mNode = node; 8011 touchUpData.mX = x; 8012 touchUpData.mY = y; 8013 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 8014 } 8015 8016 8017 private int getScaledMaxXScroll() { 8018 int width; 8019 if (mHeightCanMeasure == false) { 8020 width = getViewWidth() / 4; 8021 } else { 8022 Rect visRect = new Rect(); 8023 calcOurVisibleRect(visRect); 8024 width = visRect.width() / 2; 8025 } 8026 // FIXME the divisor should be retrieved from somewhere 8027 return viewToContentX(width); 8028 } 8029 8030 private int getScaledMaxYScroll() { 8031 int height; 8032 if (mHeightCanMeasure == false) { 8033 height = getViewHeight() / 4; 8034 } else { 8035 Rect visRect = new Rect(); 8036 calcOurVisibleRect(visRect); 8037 height = visRect.height() / 2; 8038 } 8039 // FIXME the divisor should be retrieved from somewhere 8040 // the closest thing today is hard-coded into ScrollView.java 8041 // (from ScrollView.java, line 363) int maxJump = height/2; 8042 return Math.round(height * mZoomManager.getInvScale()); 8043 } 8044 8045 /** 8046 * Called by JNI to invalidate view 8047 */ 8048 private void viewInvalidate() { 8049 invalidate(); 8050 } 8051 8052 /** 8053 * Pass the key directly to the page. This assumes that 8054 * nativePageShouldHandleShiftAndArrows() returned true. 8055 */ 8056 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 8057 int keyEventAction; 8058 int eventHubAction; 8059 if (down) { 8060 keyEventAction = KeyEvent.ACTION_DOWN; 8061 eventHubAction = EventHub.KEY_DOWN; 8062 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 8063 } else { 8064 keyEventAction = KeyEvent.ACTION_UP; 8065 eventHubAction = EventHub.KEY_UP; 8066 } 8067 8068 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 8069 1, (metaState & KeyEvent.META_SHIFT_ON) 8070 | (metaState & KeyEvent.META_ALT_ON) 8071 | (metaState & KeyEvent.META_SYM_ON) 8072 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 8073 mWebViewCore.sendMessage(eventHubAction, event); 8074 } 8075 8076 // return true if the key was handled 8077 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 8078 long time) { 8079 if (mNativeClass == 0) { 8080 return false; 8081 } 8082 mInitialHitTestResult = null; 8083 mLastCursorTime = time; 8084 mLastCursorBounds = nativeGetCursorRingBounds(); 8085 boolean keyHandled 8086 = nativeMoveCursor(keyCode, count, noScroll) == false; 8087 if (DebugFlags.WEB_VIEW) { 8088 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 8089 + " mLastCursorTime=" + mLastCursorTime 8090 + " handled=" + keyHandled); 8091 } 8092 if (keyHandled == false) { 8093 return keyHandled; 8094 } 8095 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 8096 if (contentCursorRingBounds.isEmpty()) return keyHandled; 8097 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 8098 // set last touch so that context menu related functions will work 8099 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 8100 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 8101 if (mHeightCanMeasure == false) { 8102 return keyHandled; 8103 } 8104 Rect visRect = new Rect(); 8105 calcOurVisibleRect(visRect); 8106 Rect outset = new Rect(visRect); 8107 int maxXScroll = visRect.width() / 2; 8108 int maxYScroll = visRect.height() / 2; 8109 outset.inset(-maxXScroll, -maxYScroll); 8110 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 8111 return keyHandled; 8112 } 8113 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 8114 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 8115 maxXScroll); 8116 if (maxH > 0) { 8117 pinScrollBy(maxH, 0, true, 0); 8118 } else { 8119 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 8120 -maxXScroll); 8121 if (maxH < 0) { 8122 pinScrollBy(maxH, 0, true, 0); 8123 } 8124 } 8125 if (mLastCursorBounds.isEmpty()) return keyHandled; 8126 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 8127 return keyHandled; 8128 } 8129 if (DebugFlags.WEB_VIEW) { 8130 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 8131 + contentCursorRingBounds); 8132 } 8133 requestRectangleOnScreen(viewCursorRingBounds); 8134 return keyHandled; 8135 } 8136 8137 /** 8138 * @return Whether accessibility script has been injected. 8139 */ 8140 private boolean accessibilityScriptInjected() { 8141 // TODO: Maybe the injected script should announce its presence in 8142 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 8143 // will check that as one of the conditions it looks for 8144 return mAccessibilityScriptInjected; 8145 } 8146 8147 /** 8148 * Set the background color. It's white by default. Pass 8149 * zero to make the view transparent. 8150 * @param color the ARGB color described by Color.java 8151 */ 8152 public void setBackgroundColor(int color) { 8153 mBackgroundColor = color; 8154 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 8155 } 8156 8157 public void debugDump() { 8158 nativeDebugDump(); 8159 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 8160 } 8161 8162 /** 8163 * Draw the HTML page into the specified canvas. This call ignores any 8164 * view-specific zoom, scroll offset, or other changes. It does not draw 8165 * any view-specific chrome, such as progress or URL bars. 8166 * 8167 * @hide only needs to be accessible to Browser and testing 8168 */ 8169 public void drawPage(Canvas canvas) { 8170 nativeDraw(canvas, 0, 0, false); 8171 } 8172 8173 /** 8174 * Enable expanded tiles bound for smoother scrolling. 8175 * 8176 * @hide only used by the Browser 8177 */ 8178 public void setExpandedTileBounds(boolean enabled) { 8179 nativeSetExpandedTileBounds(enabled); 8180 } 8181 8182 /** 8183 * Set the time to wait between passing touches to WebCore. See also the 8184 * TOUCH_SENT_INTERVAL member for further discussion. 8185 * 8186 * @hide This is only used by the DRT test application. 8187 */ 8188 public void setTouchInterval(int interval) { 8189 mCurrentTouchInterval = interval; 8190 } 8191 8192 /** 8193 * Update our cache with updatedText. 8194 * @param updatedText The new text to put in our cache. 8195 */ 8196 /* package */ void updateCachedTextfield(String updatedText) { 8197 // Also place our generation number so that when we look at the cache 8198 // we recognize that it is up to date. 8199 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 8200 } 8201 8202 /*package*/ void autoFillForm(int autoFillQueryId) { 8203 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 8204 } 8205 8206 /* package */ ViewManager getViewManager() { 8207 return mViewManager; 8208 } 8209 8210 private native int nativeCacheHitFramePointer(); 8211 private native boolean nativeCacheHitIsPlugin(); 8212 private native Rect nativeCacheHitNodeBounds(); 8213 private native int nativeCacheHitNodePointer(); 8214 /* package */ native void nativeClearCursor(); 8215 private native void nativeCreate(int ptr); 8216 private native int nativeCursorFramePointer(); 8217 private native Rect nativeCursorNodeBounds(); 8218 private native int nativeCursorNodePointer(); 8219 private native boolean nativeCursorIntersects(Rect visibleRect); 8220 private native boolean nativeCursorIsAnchor(); 8221 private native boolean nativeCursorIsTextInput(); 8222 private native Point nativeCursorPosition(); 8223 private native String nativeCursorText(); 8224 /** 8225 * Returns true if the native cursor node says it wants to handle key events 8226 * (ala plugins). This can only be called if mNativeClass is non-zero! 8227 */ 8228 private native boolean nativeCursorWantsKeyEvents(); 8229 private native void nativeDebugDump(); 8230 private native void nativeDestroy(); 8231 8232 /** 8233 * Draw the picture set with a background color and extra. If 8234 * "splitIfNeeded" is true and the return value is not 0, the return value 8235 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 8236 * native allocation can be freed. 8237 */ 8238 private native int nativeDraw(Canvas canvas, int color, int extra, 8239 boolean splitIfNeeded); 8240 private native void nativeDumpDisplayTree(String urlOrNull); 8241 private native boolean nativeEvaluateLayersAnimations(); 8242 private native int nativeGetDrawGLFunction(Rect rect, float scale, int extras); 8243 private native void nativeUpdateDrawGLFunction(Rect rect); 8244 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 8245 private native void nativeExtendSelection(int x, int y); 8246 private native int nativeFindAll(String findLower, String findUpper, 8247 boolean sameAsLastSearch); 8248 private native void nativeFindNext(boolean forward); 8249 /* package */ native int nativeFocusCandidateFramePointer(); 8250 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 8251 /* package */ native boolean nativeFocusCandidateIsPassword(); 8252 private native boolean nativeFocusCandidateIsRtlText(); 8253 private native boolean nativeFocusCandidateIsTextInput(); 8254 /* package */ native int nativeFocusCandidateMaxLength(); 8255 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 8256 /* package */ native String nativeFocusCandidateName(); 8257 private native Rect nativeFocusCandidateNodeBounds(); 8258 /** 8259 * @return A Rect with left, top, right, bottom set to the corresponding 8260 * padding values in the focus candidate, if it is a textfield/textarea with 8261 * a style. Otherwise return null. This is not actually a rectangle; Rect 8262 * is being used to pass four integers. 8263 */ 8264 private native Rect nativeFocusCandidatePaddingRect(); 8265 /* package */ native int nativeFocusCandidatePointer(); 8266 private native String nativeFocusCandidateText(); 8267 /* package */ native float nativeFocusCandidateTextSize(); 8268 /* package */ native int nativeFocusCandidateLineHeight(); 8269 /** 8270 * Returns an integer corresponding to WebView.cpp::type. 8271 * See WebTextView.setType() 8272 */ 8273 private native int nativeFocusCandidateType(); 8274 private native boolean nativeFocusIsPlugin(); 8275 private native Rect nativeFocusNodeBounds(); 8276 /* package */ native int nativeFocusNodePointer(); 8277 private native Rect nativeGetCursorRingBounds(); 8278 private native String nativeGetSelection(); 8279 private native boolean nativeHasCursorNode(); 8280 private native boolean nativeHasFocusNode(); 8281 private native void nativeHideCursor(); 8282 private native boolean nativeHitSelection(int x, int y); 8283 private native String nativeImageURI(int x, int y); 8284 private native void nativeInstrumentReport(); 8285 private native Rect nativeLayerBounds(int layer); 8286 /* package */ native boolean nativeMoveCursorToNextTextInput(); 8287 // return true if the page has been scrolled 8288 private native boolean nativeMotionUp(int x, int y, int slop); 8289 // returns false if it handled the key 8290 private native boolean nativeMoveCursor(int keyCode, int count, 8291 boolean noScroll); 8292 private native int nativeMoveGeneration(); 8293 private native void nativeMoveSelection(int x, int y); 8294 /** 8295 * @return true if the page should get the shift and arrow keys, rather 8296 * than select text/navigation. 8297 * 8298 * If the focus is a plugin, or if the focus and cursor match and are 8299 * a contentEditable element, then the page should handle these keys. 8300 */ 8301 private native boolean nativePageShouldHandleShiftAndArrows(); 8302 private native boolean nativePointInNavCache(int x, int y, int slop); 8303 // Like many other of our native methods, you must make sure that 8304 // mNativeClass is not null before calling this method. 8305 private native void nativeRecordButtons(boolean focused, 8306 boolean pressed, boolean invalidate); 8307 private native void nativeResetSelection(); 8308 private native Point nativeSelectableText(); 8309 private native void nativeSelectAll(); 8310 private native void nativeSelectBestAt(Rect rect); 8311 private native void nativeSelectAt(int x, int y); 8312 private native int nativeSelectionX(); 8313 private native int nativeSelectionY(); 8314 private native int nativeFindIndex(); 8315 private native void nativeSetExtendSelection(); 8316 private native void nativeSetFindIsEmpty(); 8317 private native void nativeSetFindIsUp(boolean isUp); 8318 private native void nativeSetHeightCanMeasure(boolean measure); 8319 private native void nativeSetBaseLayer(int layer, Rect invalRect); 8320 private native void nativeShowCursorTimed(); 8321 private native void nativeReplaceBaseContent(int content); 8322 private native void nativeCopyBaseContentToPicture(Picture pict); 8323 private native boolean nativeHasContent(); 8324 private native void nativeSetSelectionPointer(boolean set, 8325 float scale, int x, int y); 8326 private native boolean nativeStartSelection(int x, int y); 8327 private native void nativeStopGL(); 8328 private native Rect nativeSubtractLayers(Rect content); 8329 private native int nativeTextGeneration(); 8330 // Never call this version except by updateCachedTextfield(String) - 8331 // we always want to pass in our generation number. 8332 private native void nativeUpdateCachedTextfield(String updatedText, 8333 int generation); 8334 private native boolean nativeWordSelection(int x, int y); 8335 // return NO_LEFTEDGE means failure. 8336 static final int NO_LEFTEDGE = -1; 8337 native int nativeGetBlockLeftEdge(int x, int y, float scale); 8338 8339 private native void nativeSetExpandedTileBounds(boolean enabled); 8340 8341 // Returns a pointer to the scrollable LayerAndroid at the given point. 8342 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 8343 Rect scrollBounds); 8344 /** 8345 * Scroll the specified layer. 8346 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 8347 * @param newX Destination x position to which to scroll. 8348 * @param newY Destination y position to which to scroll. 8349 * @return True if the layer is successfully scrolled. 8350 */ 8351 private native boolean nativeScrollLayer(int layer, int newX, int newY); 8352} 8353