WebView.java revision fa44314d3afda1797f48321c7daaf999fc8677bf
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.InputDevice; 66import android.view.KeyCharacterMap; 67import android.view.KeyEvent; 68import android.view.LayoutInflater; 69import android.view.MotionEvent; 70import android.view.ScaleGestureDetector; 71import android.view.SoundEffectConstants; 72import android.view.VelocityTracker; 73import android.view.View; 74import android.view.ViewConfiguration; 75import android.view.ViewGroup; 76import android.view.ViewParent; 77import android.view.ViewTreeObserver; 78import android.view.accessibility.AccessibilityManager; 79import android.view.inputmethod.EditorInfo; 80import android.view.inputmethod.InputConnection; 81import android.view.inputmethod.InputMethodManager; 82import android.webkit.WebTextView.AutoCompleteAdapter; 83import android.webkit.WebViewCore.EventHub; 84import android.webkit.WebViewCore.TouchEventData; 85import android.webkit.WebViewCore.TouchHighlightData; 86import android.widget.AbsoluteLayout; 87import android.widget.Adapter; 88import android.widget.AdapterView; 89import android.widget.AdapterView.OnItemClickListener; 90import android.widget.ArrayAdapter; 91import android.widget.CheckedTextView; 92import android.widget.LinearLayout; 93import android.widget.ListView; 94import android.widget.OverScroller; 95import android.widget.Toast; 96 97import java.io.File; 98import java.io.FileInputStream; 99import java.io.FileNotFoundException; 100import java.io.FileOutputStream; 101import java.net.URLDecoder; 102import java.util.ArrayList; 103import java.util.HashMap; 104import java.util.HashSet; 105import java.util.List; 106import java.util.Map; 107import java.util.Set; 108import java.util.Vector; 109import java.util.regex.Matcher; 110import java.util.regex.Pattern; 111 112import junit.framework.Assert; 113 114/** 115 * <p>A View that displays web pages. This class is the basis upon which you 116 * can roll your own web browser or simply display some online content within your Activity. 117 * It uses the WebKit rendering engine to display 118 * web pages and includes methods to navigate forward and backward 119 * through a history, zoom in and out, perform text searches and more.</p> 120 * <p>To enable the built-in zoom, set 121 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 122 * (introduced in API version 3). 123 * <p>Note that, in order for your Activity to access the Internet and load web pages 124 * in a WebView, you must add the {@code INTERNET} permissions to your 125 * Android Manifest file:</p> 126 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 127 * 128 * <p>This must be a child of the <a 129 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 130 * element.</p> 131 * 132 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 133 * tutorial</a>.</p> 134 * 135 * <h3>Basic usage</h3> 136 * 137 * <p>By default, a WebView provides no browser-like widgets, does not 138 * enable JavaScript and web page errors are ignored. If your goal is only 139 * to display some HTML as a part of your UI, this is probably fine; 140 * the user won't need to interact with the web page beyond reading 141 * it, and the web page won't need to interact with the user. If you 142 * actually want a full-blown web browser, then you probably want to 143 * invoke the Browser application with a URL Intent rather than show it 144 * with a WebView. For example: 145 * <pre> 146 * Uri uri = Uri.parse("http://www.example.com"); 147 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 148 * startActivity(intent); 149 * </pre> 150 * <p>See {@link android.content.Intent} for more information.</p> 151 * 152 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 153 * or set the entire Activity window as a WebView during {@link 154 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 155 * <pre class="prettyprint"> 156 * WebView webview = new WebView(this); 157 * setContentView(webview); 158 * </pre> 159 * 160 * <p>Then load the desired web page:</p> 161 * <pre> 162 * // Simplest usage: note that an exception will NOT be thrown 163 * // if there is an error loading this page (see below). 164 * webview.loadUrl("http://slashdot.org/"); 165 * 166 * // OR, you can also load from an HTML string: 167 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 168 * webview.loadData(summary, "text/html", "utf-8"); 169 * // ... although note that there are restrictions on what this HTML can do. 170 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 171 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 172 * </pre> 173 * 174 * <p>A WebView has several customization points where you can add your 175 * own behavior. These are:</p> 176 * 177 * <ul> 178 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 179 * This class is called when something that might impact a 180 * browser UI happens, for instance, progress updates and 181 * JavaScript alerts are sent here (see <a 182 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 183 * </li> 184 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 185 * It will be called when things happen that impact the 186 * rendering of the content, eg, errors or form submissions. You 187 * can also intercept URL loading here (via {@link 188 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 189 * shouldOverrideUrlLoading()}).</li> 190 * <li>Modifying the {@link android.webkit.WebSettings}, such as 191 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 192 * setJavaScriptEnabled()}. </li> 193 * <li>Adding JavaScript-to-Java interfaces with the {@link 194 * android.webkit.WebView#addJavascriptInterface} method. 195 * This lets you bind Java objects into the WebView so they can be 196 * controlled from the web pages JavaScript.</li> 197 * </ul> 198 * 199 * <p>Here's a more complicated example, showing error handling, 200 * settings, and progress notification:</p> 201 * 202 * <pre class="prettyprint"> 203 * // Let's display the progress in the activity title bar, like the 204 * // browser app does. 205 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 206 * 207 * webview.getSettings().setJavaScriptEnabled(true); 208 * 209 * final Activity activity = this; 210 * webview.setWebChromeClient(new WebChromeClient() { 211 * public void onProgressChanged(WebView view, int progress) { 212 * // Activities and WebViews measure progress with different scales. 213 * // The progress meter will automatically disappear when we reach 100% 214 * activity.setProgress(progress * 1000); 215 * } 216 * }); 217 * webview.setWebViewClient(new WebViewClient() { 218 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 219 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 220 * } 221 * }); 222 * 223 * webview.loadUrl("http://slashdot.org/"); 224 * </pre> 225 * 226 * <h3>Cookie and window management</h3> 227 * 228 * <p>For obvious security reasons, your application has its own 229 * cache, cookie store etc.—it does not share the Browser 230 * application's data. Cookies are managed on a separate thread, so 231 * operations like index building don't block the UI 232 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 233 * if you want to use cookies in your application. 234 * </p> 235 * 236 * <p>By default, requests by the HTML to open new windows are 237 * ignored. This is true whether they be opened by JavaScript or by 238 * the target attribute on a link. You can customize your 239 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 240 * and render them in whatever manner you want.</p> 241 * 242 * <p>The standard behavior for an Activity is to be destroyed and 243 * recreated when the device orientation or any other configuration changes. This will cause 244 * the WebView to reload the current page. If you don't want that, you 245 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 246 * changes, and then just leave the WebView alone. It'll automatically 247 * re-orient itself as appropriate. Read <a 248 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 249 * more information about how to handle configuration changes during runtime.</p> 250 * 251 * 252 * <h3>Building web pages to support different screen densities</h3> 253 * 254 * <p>The screen density of a device is based on the screen resolution. A screen with low density 255 * has fewer available pixels per inch, where a screen with high density 256 * has more — sometimes significantly more — pixels per inch. The density of a 257 * screen is important because, other things being equal, a UI element (such as a button) whose 258 * height and width are defined in terms of screen pixels will appear larger on the lower density 259 * screen and smaller on the higher density screen. 260 * For simplicity, Android collapses all actual screen densities into three generalized densities: 261 * high, medium, and low.</p> 262 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 263 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 264 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 265 * are bigger). 266 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 267 * you (as a web developer) target screens with different screen densities.</p> 268 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 269 * <ul> 270 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 271 * default scaling factor used for the current device. For example, if the value of {@code 272 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 273 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 274 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 275 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 276 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 277 * (discussed below), then you can stop this default scaling behavior.</li> 278 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 279 * densities for which this style sheet is to be used. The corresponding value should be either 280 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 281 * density, or high density screens, respectively. For example: 282 * <pre> 283 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 284 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 285 * which is the high density pixel ratio.</p> 286 * </li> 287 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 288 * this to specify the target density for which the web page is designed, using the following 289 * values: 290 * <ul> 291 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 292 * occurs.</li> 293 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 294 * as appropriate.</li> 295 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 296 * low density screens scale down. This is also the default behavior.</li> 297 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 298 * as appropriate.</li> 299 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 300 * values are 70-400).</li> 301 * </ul> 302 * <p>Here's an example meta tag to specify the target density:</p> 303 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 304 * </ul> 305 * <p>If you want to modify your web page for different densities, by using the {@code 306 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 307 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 308 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 309 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 310 * 311 * 312 */ 313@Widget 314public class WebView extends AbsoluteLayout 315 implements ViewTreeObserver.OnGlobalFocusChangeListener, 316 ViewGroup.OnHierarchyChangeListener { 317 318 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 319 public void onGlobalLayout() { 320 if (isShown()) { 321 setGLRectViewport(); 322 } 323 } 324 } 325 326 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 327 public void onScrollChanged() { 328 if (isShown()) { 329 setGLRectViewport(); 330 } 331 } 332 } 333 334 // The listener to capture global layout change event. 335 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 336 337 // The listener to capture scroll event. 338 private InnerScrollChangedListener mScrollChangedListener = null; 339 340 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 341 // the screen all-the-time. Good for profiling our drawing code 342 static private final boolean AUTO_REDRAW_HACK = false; 343 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 344 private boolean mAutoRedraw; 345 346 // Reference to the AlertDialog displayed by InvokeListBox. 347 // It's used to dismiss the dialog in destroy if not done before. 348 private AlertDialog mListBoxDialog = null; 349 350 static final String LOGTAG = "webview"; 351 352 private ZoomManager mZoomManager; 353 354 private Rect mGLRectViewport = new Rect(); 355 private boolean mGLViewportEmpty = false; 356 357 /** 358 * Transportation object for returning WebView across thread boundaries. 359 */ 360 public class WebViewTransport { 361 private WebView mWebview; 362 363 /** 364 * Set the WebView to the transportation object. 365 * @param webview The WebView to transport. 366 */ 367 public synchronized void setWebView(WebView webview) { 368 mWebview = webview; 369 } 370 371 /** 372 * Return the WebView object. 373 * @return WebView The transported WebView object. 374 */ 375 public synchronized WebView getWebView() { 376 return mWebview; 377 } 378 } 379 380 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 381 private final CallbackProxy mCallbackProxy; 382 383 private final WebViewDatabase mDatabase; 384 385 // SSL certificate for the main top-level page (if secure) 386 private SslCertificate mCertificate; 387 388 // Native WebView pointer that is 0 until the native object has been 389 // created. 390 private int mNativeClass; 391 // This would be final but it needs to be set to null when the WebView is 392 // destroyed. 393 private WebViewCore mWebViewCore; 394 // Handler for dispatching UI messages. 395 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 396 private WebTextView mWebTextView; 397 // Used to ignore changes to webkit text that arrives to the UI side after 398 // more key events. 399 private int mTextGeneration; 400 401 /* package */ void incrementTextGeneration() { mTextGeneration++; } 402 403 // Used by WebViewCore to create child views. 404 /* package */ final ViewManager mViewManager; 405 406 // Used to display in full screen mode 407 PluginFullScreenHolder mFullScreenHolder; 408 409 /** 410 * Position of the last touch event in pixels. 411 * Use integer to prevent loss of dragging delta calculation accuracy; 412 * which was done in float and converted to integer, and resulted in gradual 413 * and compounding touch position and view dragging mismatch. 414 */ 415 private int mLastTouchX; 416 private int mLastTouchY; 417 418 /** 419 * Time of the last touch event. 420 */ 421 private long mLastTouchTime; 422 423 /** 424 * Time of the last time sending touch event to WebViewCore 425 */ 426 private long mLastSentTouchTime; 427 428 /** 429 * The minimum elapsed time before sending another ACTION_MOVE event to 430 * WebViewCore. This really should be tuned for each type of the devices. 431 * For example in Google Map api test case, it takes Dream device at least 432 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 433 * triggering the layout and drawing the picture. While the same process 434 * takes 60+ms on the current high speed device. If we make 435 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 436 * to WebViewCore queue and the real layout and draw events will be pushed 437 * to further, which slows down the refresh rate. Choose 50 to favor the 438 * current high speed devices. For Dream like devices, 100 is a better 439 * choice. Maybe make this in the buildspec later. 440 * (Update 12/14/2010: changed to 0 since current device should be able to 441 * handle the raw events and Map team voted to have the raw events too. 442 */ 443 private static final int TOUCH_SENT_INTERVAL = 0; 444 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 445 446 /** 447 * Helper class to get velocity for fling 448 */ 449 VelocityTracker mVelocityTracker; 450 private int mMaximumFling; 451 private float mLastVelocity; 452 private float mLastVelX; 453 private float mLastVelY; 454 455 // The id of the native layer being scrolled. 456 private int mScrollingLayer; 457 private Rect mScrollingLayerRect = new Rect(); 458 459 // only trigger accelerated fling if the new velocity is at least 460 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 461 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 462 463 /** 464 * Touch mode 465 */ 466 private int mTouchMode = TOUCH_DONE_MODE; 467 private static final int TOUCH_INIT_MODE = 1; 468 private static final int TOUCH_DRAG_START_MODE = 2; 469 private static final int TOUCH_DRAG_MODE = 3; 470 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 471 private static final int TOUCH_SHORTPRESS_MODE = 5; 472 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 473 private static final int TOUCH_DONE_MODE = 7; 474 private static final int TOUCH_PINCH_DRAG = 8; 475 private static final int TOUCH_DRAG_LAYER_MODE = 9; 476 477 // Whether to forward the touch events to WebCore 478 // Can only be set by WebKit via JNI. 479 private boolean mForwardTouchEvents = false; 480 481 // Whether to prevent default during touch. The initial value depends on 482 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 483 // for touch down. Otherwise UI will wait for the answer of the first 484 // confirmed move before taking over the control. 485 private static final int PREVENT_DEFAULT_NO = 0; 486 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 487 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 488 private static final int PREVENT_DEFAULT_YES = 3; 489 private static final int PREVENT_DEFAULT_IGNORE = 4; 490 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 491 492 // true when the touch movement exceeds the slop 493 private boolean mConfirmMove; 494 495 // if true, touch events will be first processed by WebCore, if prevent 496 // default is not set, the UI will continue handle them. 497 private boolean mDeferTouchProcess; 498 499 // Currently, multi-touch events are sent to WebKit first then back to 500 // WebView while single-touch events are handled in WebView first. 501 // So there is a chance that a single-touch move event is handled in WebView 502 // before multi-touch events are finished. 503 // if mIsHandlingMultiTouch is true, which means multi-touch event handling 504 // is not finished, then any single-touch move event will be skipped. 505 // FIXME: send single-touch events to WebKit first then back to WebView. 506 private boolean mIsHandlingMultiTouch = false; 507 508 // to avoid interfering with the current touch events, track them 509 // separately. Currently no snapping or fling in the deferred process mode 510 private int mDeferTouchMode = TOUCH_DONE_MODE; 511 private float mLastDeferTouchX; 512 private float mLastDeferTouchY; 513 514 // To keep track of whether the current drag was initiated by a WebTextView, 515 // so that we know not to hide the cursor 516 boolean mDragFromTextInput; 517 518 // Whether or not to draw the cursor ring. 519 private boolean mDrawCursorRing = true; 520 521 // true if onPause has been called (and not onResume) 522 private boolean mIsPaused; 523 524 private HitTestResult mInitialHitTestResult; 525 526 /** 527 * Customizable constant 528 */ 529 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 530 private int mTouchSlopSquare; 531 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 532 private int mDoubleTapSlopSquare; 533 // pre-computed density adjusted navigation slop 534 private int mNavSlop; 535 // This should be ViewConfiguration.getTapTimeout() 536 // But system time out is 100ms, which is too short for the browser. 537 // In the browser, if it switches out of tap too soon, jump tap won't work. 538 private static final int TAP_TIMEOUT = 200; 539 // This should be ViewConfiguration.getLongPressTimeout() 540 // But system time out is 500ms, which is too short for the browser. 541 // With a short timeout, it's difficult to treat trigger a short press. 542 private static final int LONG_PRESS_TIMEOUT = 1000; 543 // needed to avoid flinging after a pause of no movement 544 private static final int MIN_FLING_TIME = 250; 545 // draw unfiltered after drag is held without movement 546 private static final int MOTIONLESS_TIME = 100; 547 // The amount of content to overlap between two screens when going through 548 // pages with the space bar, in pixels. 549 private static final int PAGE_SCROLL_OVERLAP = 24; 550 551 /** 552 * These prevent calling requestLayout if either dimension is fixed. This 553 * depends on the layout parameters and the measure specs. 554 */ 555 boolean mWidthCanMeasure; 556 boolean mHeightCanMeasure; 557 558 // Remember the last dimensions we sent to the native side so we can avoid 559 // sending the same dimensions more than once. 560 int mLastWidthSent; 561 int mLastHeightSent; 562 // Since view height sent to webkit could be fixed to avoid relayout, this 563 // value records the last sent actual view height. 564 int mLastActualHeightSent; 565 566 private int mContentWidth; // cache of value from WebViewCore 567 private int mContentHeight; // cache of value from WebViewCore 568 569 // Need to have the separate control for horizontal and vertical scrollbar 570 // style than the View's single scrollbar style 571 private boolean mOverlayHorizontalScrollbar = true; 572 private boolean mOverlayVerticalScrollbar = false; 573 574 // our standard speed. this way small distances will be traversed in less 575 // time than large distances, but we cap the duration, so that very large 576 // distances won't take too long to get there. 577 private static final int STD_SPEED = 480; // pixels per second 578 // time for the longest scroll animation 579 private static final int MAX_DURATION = 750; // milliseconds 580 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 581 582 // Used by OverScrollGlow 583 OverScroller mScroller; 584 585 private boolean mInOverScrollMode = false; 586 private static Paint mOverScrollBackground; 587 private static Paint mOverScrollBorder; 588 589 private boolean mWrapContent; 590 private static final int MOTIONLESS_FALSE = 0; 591 private static final int MOTIONLESS_PENDING = 1; 592 private static final int MOTIONLESS_TRUE = 2; 593 private static final int MOTIONLESS_IGNORE = 3; 594 private int mHeldMotionless; 595 596 // An instance for injecting accessibility in WebViews with disabled 597 // JavaScript or ones for which no accessibility script exists 598 private AccessibilityInjector mAccessibilityInjector; 599 600 // flag indicating if accessibility script is injected so we 601 // know to handle Shift and arrows natively first 602 private boolean mAccessibilityScriptInjected; 603 604 // the color used to highlight the touch rectangles 605 private static final int mHightlightColor = 0x33000000; 606 // the round corner for the highlight path 607 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 608 // the region indicating where the user touched on the screen 609 private Region mTouchHighlightRegion = new Region(); 610 // the paint for the touch highlight 611 private Paint mTouchHightlightPaint; 612 // debug only 613 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 614 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 615 private Paint mTouchCrossHairColor; 616 private int mTouchHighlightX; 617 private int mTouchHighlightY; 618 619 /* 620 * Private message ids 621 */ 622 private static final int REMEMBER_PASSWORD = 1; 623 private static final int NEVER_REMEMBER_PASSWORD = 2; 624 private static final int SWITCH_TO_SHORTPRESS = 3; 625 private static final int SWITCH_TO_LONGPRESS = 4; 626 private static final int RELEASE_SINGLE_TAP = 5; 627 private static final int REQUEST_FORM_DATA = 6; 628 private static final int RESUME_WEBCORE_PRIORITY = 7; 629 private static final int DRAG_HELD_MOTIONLESS = 8; 630 private static final int AWAKEN_SCROLL_BARS = 9; 631 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 632 private static final int SCROLL_SELECT_TEXT = 11; 633 634 635 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 636 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 637 638 /* 639 * Package message ids 640 */ 641 static final int SCROLL_TO_MSG_ID = 101; 642 static final int NEW_PICTURE_MSG_ID = 105; 643 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 644 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 645 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 646 static final int UPDATE_ZOOM_RANGE = 109; 647 static final int UNHANDLED_NAV_KEY = 110; 648 static final int CLEAR_TEXT_ENTRY = 111; 649 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 650 static final int SHOW_RECT_MSG_ID = 113; 651 static final int LONG_PRESS_CENTER = 114; 652 static final int PREVENT_TOUCH_ID = 115; 653 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 654 // obj=Rect in doc coordinates 655 static final int INVAL_RECT_MSG_ID = 117; 656 static final int REQUEST_KEYBOARD = 118; 657 static final int DO_MOTION_UP = 119; 658 static final int SHOW_FULLSCREEN = 120; 659 static final int HIDE_FULLSCREEN = 121; 660 static final int DOM_FOCUS_CHANGED = 122; 661 static final int REPLACE_BASE_CONTENT = 123; 662 static final int FORM_DID_BLUR = 124; 663 static final int RETURN_LABEL = 125; 664 static final int FIND_AGAIN = 126; 665 static final int CENTER_FIT_RECT = 127; 666 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 667 static final int SET_SCROLLBAR_MODES = 129; 668 static final int SELECTION_STRING_CHANGED = 130; 669 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 670 static final int SAVE_WEBARCHIVE_FINISHED = 132; 671 672 static final int SET_AUTOFILLABLE = 133; 673 static final int AUTOFILL_COMPLETE = 134; 674 675 static final int SELECT_AT = 135; 676 static final int SCREEN_ON = 136; 677 678 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 679 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 680 681 static final String[] HandlerPrivateDebugString = { 682 "REMEMBER_PASSWORD", // = 1; 683 "NEVER_REMEMBER_PASSWORD", // = 2; 684 "SWITCH_TO_SHORTPRESS", // = 3; 685 "SWITCH_TO_LONGPRESS", // = 4; 686 "RELEASE_SINGLE_TAP", // = 5; 687 "REQUEST_FORM_DATA", // = 6; 688 "RESUME_WEBCORE_PRIORITY", // = 7; 689 "DRAG_HELD_MOTIONLESS", // = 8; 690 "AWAKEN_SCROLL_BARS", // = 9; 691 "PREVENT_DEFAULT_TIMEOUT", // = 10; 692 "SCROLL_SELECT_TEXT" // = 11; 693 }; 694 695 static final String[] HandlerPackageDebugString = { 696 "SCROLL_TO_MSG_ID", // = 101; 697 "102", // = 102; 698 "103", // = 103; 699 "104", // = 104; 700 "NEW_PICTURE_MSG_ID", // = 105; 701 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 702 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 703 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 704 "UPDATE_ZOOM_RANGE", // = 109; 705 "UNHANDLED_NAV_KEY", // = 110; 706 "CLEAR_TEXT_ENTRY", // = 111; 707 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 708 "SHOW_RECT_MSG_ID", // = 113; 709 "LONG_PRESS_CENTER", // = 114; 710 "PREVENT_TOUCH_ID", // = 115; 711 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 712 "INVAL_RECT_MSG_ID", // = 117; 713 "REQUEST_KEYBOARD", // = 118; 714 "DO_MOTION_UP", // = 119; 715 "SHOW_FULLSCREEN", // = 120; 716 "HIDE_FULLSCREEN", // = 121; 717 "DOM_FOCUS_CHANGED", // = 122; 718 "REPLACE_BASE_CONTENT", // = 123; 719 "FORM_DID_BLUR", // = 124; 720 "RETURN_LABEL", // = 125; 721 "FIND_AGAIN", // = 126; 722 "CENTER_FIT_RECT", // = 127; 723 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 724 "SET_SCROLLBAR_MODES", // = 129; 725 "SELECTION_STRING_CHANGED", // = 130; 726 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 727 "SAVE_WEBARCHIVE_FINISHED", // = 132; 728 "SET_AUTOFILLABLE", // = 133; 729 "AUTOFILL_COMPLETE", // = 134; 730 "SELECT_AT", // = 135; 731 "SCREEN_ON" // = 136; 732 }; 733 734 // If the site doesn't use the viewport meta tag to specify the viewport, 735 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 736 static final int DEFAULT_VIEWPORT_WIDTH = 980; 737 738 // normally we try to fit the content to the minimum preferred width 739 // calculated by the Webkit. To avoid the bad behavior when some site's 740 // minimum preferred width keeps growing when changing the viewport width or 741 // the minimum preferred width is huge, an upper limit is needed. 742 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 743 744 // initial scale in percent. 0 means using default. 745 private int mInitialScaleInPercent = 0; 746 747 // Whether or not a scroll event should be sent to webkit. This is only set 748 // to false when restoring the scroll position. 749 private boolean mSendScrollEvent = true; 750 751 private int mSnapScrollMode = SNAP_NONE; 752 private static final int SNAP_NONE = 0; 753 private static final int SNAP_LOCK = 1; // not a separate state 754 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 755 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 756 private boolean mSnapPositive; 757 758 // keep these in sync with their counterparts in WebView.cpp 759 private static final int DRAW_EXTRAS_NONE = 0; 760 private static final int DRAW_EXTRAS_FIND = 1; 761 private static final int DRAW_EXTRAS_SELECTION = 2; 762 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 763 764 // keep this in sync with WebCore:ScrollbarMode in WebKit 765 private static final int SCROLLBAR_AUTO = 0; 766 private static final int SCROLLBAR_ALWAYSOFF = 1; 767 // as we auto fade scrollbar, this is ignored. 768 private static final int SCROLLBAR_ALWAYSON = 2; 769 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 770 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 771 772 // constants for determining script injection strategy 773 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 774 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 775 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 776 777 // the alias via which accessibility JavaScript interface is exposed 778 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 779 780 // JavaScript to inject the script chooser which will 781 // pick the right script for the current URL 782 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 783 "javascript:(function() {" + 784 " var chooser = document.createElement('script');" + 785 " chooser.type = 'text/javascript';" + 786 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 787 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 788 " })();"; 789 790 // Regular expression that matches the "axs" URL parameter. 791 // The value of 0 means the accessibility script is opted out 792 // The value of 1 means the accessibility script is already injected 793 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 794 795 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 796 private TextToSpeech mTextToSpeech; 797 798 // variable to cache the above pattern in case accessibility is enabled. 799 private Pattern mMatchAxsUrlParameterPattern; 800 801 /** 802 * Max distance to overscroll by in pixels. 803 * This how far content can be pulled beyond its normal bounds by the user. 804 */ 805 private int mOverscrollDistance; 806 807 /** 808 * Max distance to overfling by in pixels. 809 * This is how far flinged content can move beyond the end of its normal bounds. 810 */ 811 private int mOverflingDistance; 812 813 private OverScrollGlow mOverScrollGlow; 814 815 // Used to match key downs and key ups 816 private Vector<Integer> mKeysPressed; 817 818 /* package */ static boolean mLogEvent = true; 819 820 // for event log 821 private long mLastTouchUpTime = 0; 822 823 private WebViewCore.AutoFillData mAutoFillData; 824 825 /** 826 * URI scheme for telephone number 827 */ 828 public static final String SCHEME_TEL = "tel:"; 829 /** 830 * URI scheme for email address 831 */ 832 public static final String SCHEME_MAILTO = "mailto:"; 833 /** 834 * URI scheme for map address 835 */ 836 public static final String SCHEME_GEO = "geo:0,0?q="; 837 838 private int mBackgroundColor = Color.WHITE; 839 840 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 841 private int mAutoScrollX = 0; 842 private int mAutoScrollY = 0; 843 private int mMinAutoScrollX = 0; 844 private int mMaxAutoScrollX = 0; 845 private int mMinAutoScrollY = 0; 846 private int mMaxAutoScrollY = 0; 847 private Rect mScrollingLayerBounds = new Rect(); 848 private boolean mSentAutoScrollMessage = false; 849 850 // Used to notify listeners of a new picture. 851 private PictureListener mPictureListener; 852 /** 853 * Interface to listen for new pictures as they change. 854 */ 855 public interface PictureListener { 856 /** 857 * Notify the listener that the picture has changed. 858 * @param view The WebView that owns the picture. 859 * @param picture The new picture. 860 */ 861 public void onNewPicture(WebView view, Picture picture); 862 } 863 864 // FIXME: Want to make this public, but need to change the API file. 865 public /*static*/ class HitTestResult { 866 /** 867 * Default HitTestResult, where the target is unknown 868 */ 869 public static final int UNKNOWN_TYPE = 0; 870 /** 871 * HitTestResult for hitting a HTML::a tag 872 */ 873 public static final int ANCHOR_TYPE = 1; 874 /** 875 * HitTestResult for hitting a phone number 876 */ 877 public static final int PHONE_TYPE = 2; 878 /** 879 * HitTestResult for hitting a map address 880 */ 881 public static final int GEO_TYPE = 3; 882 /** 883 * HitTestResult for hitting an email address 884 */ 885 public static final int EMAIL_TYPE = 4; 886 /** 887 * HitTestResult for hitting an HTML::img tag 888 */ 889 public static final int IMAGE_TYPE = 5; 890 /** 891 * HitTestResult for hitting a HTML::a tag which contains HTML::img 892 */ 893 public static final int IMAGE_ANCHOR_TYPE = 6; 894 /** 895 * HitTestResult for hitting a HTML::a tag with src=http 896 */ 897 public static final int SRC_ANCHOR_TYPE = 7; 898 /** 899 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 900 */ 901 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 902 /** 903 * HitTestResult for hitting an edit text area 904 */ 905 public static final int EDIT_TEXT_TYPE = 9; 906 907 private int mType; 908 private String mExtra; 909 910 HitTestResult() { 911 mType = UNKNOWN_TYPE; 912 } 913 914 private void setType(int type) { 915 mType = type; 916 } 917 918 private void setExtra(String extra) { 919 mExtra = extra; 920 } 921 922 public int getType() { 923 return mType; 924 } 925 926 public String getExtra() { 927 return mExtra; 928 } 929 } 930 931 /** 932 * Construct a new WebView with a Context object. 933 * @param context A Context object used to access application assets. 934 */ 935 public WebView(Context context) { 936 this(context, null); 937 } 938 939 /** 940 * Construct a new WebView with layout parameters. 941 * @param context A Context object used to access application assets. 942 * @param attrs An AttributeSet passed to our parent. 943 */ 944 public WebView(Context context, AttributeSet attrs) { 945 this(context, attrs, com.android.internal.R.attr.webViewStyle); 946 } 947 948 /** 949 * Construct a new WebView with layout parameters and a default style. 950 * @param context A Context object used to access application assets. 951 * @param attrs An AttributeSet passed to our parent. 952 * @param defStyle The default style resource ID. 953 */ 954 public WebView(Context context, AttributeSet attrs, int defStyle) { 955 this(context, attrs, defStyle, false); 956 } 957 958 /** 959 * Construct a new WebView with layout parameters and a default style. 960 * @param context A Context object used to access application assets. 961 * @param attrs An AttributeSet passed to our parent. 962 * @param defStyle The default style resource ID. 963 */ 964 public WebView(Context context, AttributeSet attrs, int defStyle, 965 boolean privateBrowsing) { 966 this(context, attrs, defStyle, null, privateBrowsing); 967 } 968 969 /** 970 * Construct a new WebView with layout parameters, a default style and a set 971 * of custom Javscript interfaces to be added to the WebView at initialization 972 * time. This guarantees that these interfaces will be available when the JS 973 * context is initialized. 974 * @param context A Context object used to access application assets. 975 * @param attrs An AttributeSet passed to our parent. 976 * @param defStyle The default style resource ID. 977 * @param javaScriptInterfaces is a Map of interface names, as keys, and 978 * object implementing those interfaces, as values. 979 * @hide pending API council approval. 980 */ 981 protected WebView(Context context, AttributeSet attrs, int defStyle, 982 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 983 super(context, attrs, defStyle); 984 985 // Used by the chrome stack to find application paths 986 JniUtil.setContext(context); 987 988 mCallbackProxy = new CallbackProxy(context, this); 989 mViewManager = new ViewManager(this); 990 L10nUtils.setApplicationContext(context.getApplicationContext()); 991 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 992 mDatabase = WebViewDatabase.getInstance(context); 993 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 994 mZoomManager = new ZoomManager(this, mCallbackProxy); 995 996 /* The init method must follow the creation of certain member variables, 997 * such as the mZoomManager. 998 */ 999 init(); 1000 setupPackageListener(context); 1001 setupProxyListener(context); 1002 updateMultiTouchSupport(context); 1003 1004 if (privateBrowsing) { 1005 startPrivateBrowsing(); 1006 } 1007 1008 mAutoFillData = new WebViewCore.AutoFillData(); 1009 } 1010 1011 private static class ProxyReceiver extends BroadcastReceiver { 1012 @Override 1013 public void onReceive(Context context, Intent intent) { 1014 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1015 handleProxyBroadcast(intent); 1016 } 1017 } 1018 } 1019 1020 /* 1021 * A variable to track if there is a receiver added for PROXY_CHANGE_ACTION 1022 */ 1023 private static boolean sProxyReceiverAdded; 1024 1025 private static synchronized void setupProxyListener(Context context) { 1026 if (sProxyReceiverAdded) { 1027 return; 1028 } 1029 IntentFilter filter = new IntentFilter(); 1030 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1031 Intent currentProxy = context.getApplicationContext().registerReceiver( 1032 new ProxyReceiver(), filter); 1033 sProxyReceiverAdded = true; 1034 if (currentProxy != null) { 1035 handleProxyBroadcast(currentProxy); 1036 } 1037 } 1038 1039 private static void handleProxyBroadcast(Intent intent) { 1040 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1041 if (proxyProperties == null || proxyProperties.getHost() == null) { 1042 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, ""); 1043 return; 1044 } 1045 1046 String host = proxyProperties.getHost(); 1047 int port = proxyProperties.getPort(); 1048 if (port != 0) 1049 host += ":" + port; 1050 1051 // TODO: Handle exclusion list 1052 // The plan is to make an AndroidProxyResolver, and handle the blacklist 1053 // there 1054 String exclusionList = proxyProperties.getExclusionList(); 1055 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, host); 1056 } 1057 1058 /* 1059 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1060 * or ACTION_PACKAGE_REMOVED. 1061 */ 1062 private static boolean sPackageInstallationReceiverAdded = false; 1063 1064 /* 1065 * A set of Google packages we monitor for the 1066 * navigator.isApplicationInstalled() API. Add additional packages as 1067 * needed. 1068 */ 1069 private static Set<String> sGoogleApps; 1070 static { 1071 sGoogleApps = new HashSet<String>(); 1072 sGoogleApps.add("com.google.android.youtube"); 1073 } 1074 1075 private static class PackageListener extends BroadcastReceiver { 1076 @Override 1077 public void onReceive(Context context, Intent intent) { 1078 final String action = intent.getAction(); 1079 final String packageName = intent.getData().getSchemeSpecificPart(); 1080 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1081 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1082 // if it is replacing, refreshPlugins() when adding 1083 return; 1084 } 1085 1086 if (sGoogleApps.contains(packageName)) { 1087 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1088 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1089 } else { 1090 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1091 } 1092 } 1093 1094 PluginManager pm = PluginManager.getInstance(context); 1095 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1096 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1097 } 1098 } 1099 } 1100 1101 private void setupPackageListener(Context context) { 1102 1103 /* 1104 * we must synchronize the instance check and the creation of the 1105 * receiver to ensure that only ONE receiver exists for all WebView 1106 * instances. 1107 */ 1108 synchronized (WebView.class) { 1109 1110 // if the receiver already exists then we do not need to register it 1111 // again 1112 if (sPackageInstallationReceiverAdded) { 1113 return; 1114 } 1115 1116 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1117 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1118 filter.addDataScheme("package"); 1119 BroadcastReceiver packageListener = new PackageListener(); 1120 context.getApplicationContext().registerReceiver(packageListener, filter); 1121 sPackageInstallationReceiverAdded = true; 1122 } 1123 1124 // check if any of the monitored apps are already installed 1125 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1126 1127 @Override 1128 protected Set<String> doInBackground(Void... unused) { 1129 Set<String> installedPackages = new HashSet<String>(); 1130 PackageManager pm = mContext.getPackageManager(); 1131 List<PackageInfo> packages = pm.getInstalledPackages(0); 1132 for (PackageInfo p : packages) { 1133 if (sGoogleApps.contains(p.packageName)) { 1134 installedPackages.add(p.packageName); 1135 } 1136 } 1137 return installedPackages; 1138 } 1139 1140 // Executes on the UI thread 1141 @Override 1142 protected void onPostExecute(Set<String> installedPackages) { 1143 if (mWebViewCore != null) { 1144 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1145 } 1146 } 1147 }; 1148 task.execute(); 1149 } 1150 1151 void updateMultiTouchSupport(Context context) { 1152 mZoomManager.updateMultiTouchSupport(context); 1153 } 1154 1155 private void init() { 1156 setWillNotDraw(false); 1157 setFocusable(true); 1158 setFocusableInTouchMode(true); 1159 setClickable(true); 1160 setLongClickable(true); 1161 1162 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1163 int slop = configuration.getScaledTouchSlop(); 1164 mTouchSlopSquare = slop * slop; 1165 mMinLockSnapReverseDistance = slop; 1166 slop = configuration.getScaledDoubleTapSlop(); 1167 mDoubleTapSlopSquare = slop * slop; 1168 final float density = getContext().getResources().getDisplayMetrics().density; 1169 // use one line height, 16 based on our current default font, for how 1170 // far we allow a touch be away from the edge of a link 1171 mNavSlop = (int) (16 * density); 1172 mZoomManager.init(density); 1173 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1174 1175 // Compute the inverse of the density squared. 1176 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1177 1178 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1179 mOverflingDistance = configuration.getScaledOverflingDistance(); 1180 1181 setScrollBarStyle(super.getScrollBarStyle()); 1182 // Initially use a size of two, since the user is likely to only hold 1183 // down two keys at a time (shift + another key) 1184 mKeysPressed = new Vector<Integer>(2); 1185 } 1186 1187 /** 1188 * Adds accessibility APIs to JavaScript. 1189 * 1190 * Note: This method is responsible to performing the necessary 1191 * check if the accessibility APIs should be exposed. 1192 */ 1193 private void addAccessibilityApisToJavaScript() { 1194 if (AccessibilityManager.getInstance(mContext).isEnabled() 1195 && getSettings().getJavaScriptEnabled()) { 1196 // exposing the TTS for now ... 1197 mTextToSpeech = new TextToSpeech(getContext(), null); 1198 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1199 } 1200 } 1201 1202 /** 1203 * Removes accessibility APIs from JavaScript. 1204 */ 1205 private void removeAccessibilityApisFromJavaScript() { 1206 // exposing the TTS for now ... 1207 if (mTextToSpeech != null) { 1208 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1209 mTextToSpeech.shutdown(); 1210 mTextToSpeech = null; 1211 } 1212 } 1213 1214 @Override 1215 public void setOverScrollMode(int mode) { 1216 super.setOverScrollMode(mode); 1217 if (mode != OVER_SCROLL_NEVER) { 1218 if (mOverScrollGlow == null) { 1219 mOverScrollGlow = new OverScrollGlow(this); 1220 } 1221 } else { 1222 mOverScrollGlow = null; 1223 } 1224 } 1225 1226 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1227 final float density = mContext.getResources().getDisplayMetrics().density 1228 * 100 / zoomDensity; 1229 mNavSlop = (int) (16 * density); 1230 mZoomManager.updateDefaultZoomDensity(density); 1231 } 1232 1233 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1234 String password, final Message resumeMsg) { 1235 boolean rVal = false; 1236 if (resumeMsg == null) { 1237 // null resumeMsg implies saving password silently 1238 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1239 } else { 1240 final Message remember = mPrivateHandler.obtainMessage( 1241 REMEMBER_PASSWORD); 1242 remember.getData().putString("host", schemePlusHost); 1243 remember.getData().putString("username", username); 1244 remember.getData().putString("password", password); 1245 remember.obj = resumeMsg; 1246 1247 final Message neverRemember = mPrivateHandler.obtainMessage( 1248 NEVER_REMEMBER_PASSWORD); 1249 neverRemember.getData().putString("host", schemePlusHost); 1250 neverRemember.getData().putString("username", username); 1251 neverRemember.getData().putString("password", password); 1252 neverRemember.obj = resumeMsg; 1253 1254 new AlertDialog.Builder(getContext()) 1255 .setTitle(com.android.internal.R.string.save_password_label) 1256 .setMessage(com.android.internal.R.string.save_password_message) 1257 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1258 new DialogInterface.OnClickListener() { 1259 public void onClick(DialogInterface dialog, int which) { 1260 resumeMsg.sendToTarget(); 1261 } 1262 }) 1263 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1264 new DialogInterface.OnClickListener() { 1265 public void onClick(DialogInterface dialog, int which) { 1266 remember.sendToTarget(); 1267 } 1268 }) 1269 .setNegativeButton(com.android.internal.R.string.save_password_never, 1270 new DialogInterface.OnClickListener() { 1271 public void onClick(DialogInterface dialog, int which) { 1272 neverRemember.sendToTarget(); 1273 } 1274 }) 1275 .setOnCancelListener(new OnCancelListener() { 1276 public void onCancel(DialogInterface dialog) { 1277 resumeMsg.sendToTarget(); 1278 } 1279 }).show(); 1280 // Return true so that WebViewCore will pause while the dialog is 1281 // up. 1282 rVal = true; 1283 } 1284 return rVal; 1285 } 1286 1287 @Override 1288 public void setScrollBarStyle(int style) { 1289 if (style == View.SCROLLBARS_INSIDE_INSET 1290 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1291 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1292 } else { 1293 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1294 } 1295 super.setScrollBarStyle(style); 1296 } 1297 1298 /** 1299 * Specify whether the horizontal scrollbar has overlay style. 1300 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1301 */ 1302 public void setHorizontalScrollbarOverlay(boolean overlay) { 1303 mOverlayHorizontalScrollbar = overlay; 1304 } 1305 1306 /** 1307 * Specify whether the vertical scrollbar has overlay style. 1308 * @param overlay TRUE if vertical scrollbar should have overlay style. 1309 */ 1310 public void setVerticalScrollbarOverlay(boolean overlay) { 1311 mOverlayVerticalScrollbar = overlay; 1312 } 1313 1314 /** 1315 * Return whether horizontal scrollbar has overlay style 1316 * @return TRUE if horizontal scrollbar has overlay style. 1317 */ 1318 public boolean overlayHorizontalScrollbar() { 1319 return mOverlayHorizontalScrollbar; 1320 } 1321 1322 /** 1323 * Return whether vertical scrollbar has overlay style 1324 * @return TRUE if vertical scrollbar has overlay style. 1325 */ 1326 public boolean overlayVerticalScrollbar() { 1327 return mOverlayVerticalScrollbar; 1328 } 1329 1330 /* 1331 * Return the width of the view where the content of WebView should render 1332 * to. 1333 * Note: this can be called from WebCoreThread. 1334 */ 1335 /* package */ int getViewWidth() { 1336 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1337 return getWidth(); 1338 } else { 1339 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1340 } 1341 } 1342 1343 /** 1344 * returns the height of the titlebarview (if any). Does not care about 1345 * scrolling 1346 * @hide 1347 */ 1348 protected int getTitleHeight() { 1349 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1350 } 1351 1352 /* 1353 * Return the amount of the titlebarview (if any) that is visible 1354 * 1355 * @hide 1356 */ 1357 public int getVisibleTitleHeight() { 1358 // need to restrict mScrollY due to over scroll 1359 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1360 } 1361 1362 /* 1363 * Return the height of the view where the content of WebView should render 1364 * to. Note that this excludes mTitleBar, if there is one. 1365 * Note: this can be called from WebCoreThread. 1366 */ 1367 /* package */ int getViewHeight() { 1368 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1369 } 1370 1371 private int getViewHeightWithTitle() { 1372 int height = getHeight(); 1373 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1374 height -= getHorizontalScrollbarHeight(); 1375 } 1376 return height; 1377 } 1378 1379 /** 1380 * @return The SSL certificate for the main top-level page or null if 1381 * there is no certificate (the site is not secure). 1382 */ 1383 public SslCertificate getCertificate() { 1384 return mCertificate; 1385 } 1386 1387 /** 1388 * Sets the SSL certificate for the main top-level page. 1389 */ 1390 public void setCertificate(SslCertificate certificate) { 1391 if (DebugFlags.WEB_VIEW) { 1392 Log.v(LOGTAG, "setCertificate=" + certificate); 1393 } 1394 // here, the certificate can be null (if the site is not secure) 1395 mCertificate = certificate; 1396 } 1397 1398 //------------------------------------------------------------------------- 1399 // Methods called by activity 1400 //------------------------------------------------------------------------- 1401 1402 /** 1403 * Save the username and password for a particular host in the WebView's 1404 * internal database. 1405 * @param host The host that required the credentials. 1406 * @param username The username for the given host. 1407 * @param password The password for the given host. 1408 */ 1409 public void savePassword(String host, String username, String password) { 1410 mDatabase.setUsernamePassword(host, username, password); 1411 } 1412 1413 /** 1414 * Set the HTTP authentication credentials for a given host and realm. 1415 * 1416 * @param host The host for the credentials. 1417 * @param realm The realm for the credentials. 1418 * @param username The username for the password. If it is null, it means 1419 * password can't be saved. 1420 * @param password The password 1421 */ 1422 public void setHttpAuthUsernamePassword(String host, String realm, 1423 String username, String password) { 1424 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1425 } 1426 1427 /** 1428 * Retrieve the HTTP authentication username and password for a given 1429 * host & realm pair 1430 * 1431 * @param host The host for which the credentials apply. 1432 * @param realm The realm for which the credentials apply. 1433 * @return String[] if found, String[0] is username, which can be null and 1434 * String[1] is password. Return null if it can't find anything. 1435 */ 1436 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1437 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1438 } 1439 1440 /** 1441 * Remove Find or Select ActionModes, if active. 1442 */ 1443 private void clearActionModes() { 1444 if (mSelectCallback != null) { 1445 mSelectCallback.finish(); 1446 } 1447 if (mFindCallback != null) { 1448 mFindCallback.finish(); 1449 } 1450 } 1451 1452 /** 1453 * Called to clear state when moving from one page to another, or changing 1454 * in some other way that makes elements associated with the current page 1455 * (such as WebTextView or ActionModes) no longer relevant. 1456 */ 1457 private void clearHelpers() { 1458 clearTextEntry(); 1459 clearActionModes(); 1460 dismissFullScreenMode(); 1461 } 1462 1463 /** 1464 * Destroy the internal state of the WebView. This method should be called 1465 * after the WebView has been removed from the view system. No other 1466 * methods may be called on a WebView after destroy. 1467 */ 1468 public void destroy() { 1469 clearHelpers(); 1470 if (mListBoxDialog != null) { 1471 mListBoxDialog.dismiss(); 1472 mListBoxDialog = null; 1473 } 1474 if (mNativeClass != 0) nativeStopGL(); 1475 if (mWebViewCore != null) { 1476 // Set the handlers to null before destroying WebViewCore so no 1477 // more messages will be posted. 1478 mCallbackProxy.setWebViewClient(null); 1479 mCallbackProxy.setWebChromeClient(null); 1480 // Tell WebViewCore to destroy itself 1481 synchronized (this) { 1482 WebViewCore webViewCore = mWebViewCore; 1483 mWebViewCore = null; // prevent using partial webViewCore 1484 webViewCore.destroy(); 1485 } 1486 // Remove any pending messages that might not be serviced yet. 1487 mPrivateHandler.removeCallbacksAndMessages(null); 1488 mCallbackProxy.removeCallbacksAndMessages(null); 1489 // Wake up the WebCore thread just in case it is waiting for a 1490 // JavaScript dialog. 1491 synchronized (mCallbackProxy) { 1492 mCallbackProxy.notify(); 1493 } 1494 } 1495 if (mNativeClass != 0) { 1496 nativeDestroy(); 1497 mNativeClass = 0; 1498 } 1499 } 1500 1501 /** 1502 * Enables platform notifications of data state and proxy changes. 1503 */ 1504 public static void enablePlatformNotifications() { 1505 Network.enablePlatformNotifications(); 1506 } 1507 1508 /** 1509 * If platform notifications are enabled, this should be called 1510 * from the Activity's onPause() or onStop(). 1511 */ 1512 public static void disablePlatformNotifications() { 1513 Network.disablePlatformNotifications(); 1514 } 1515 1516 /** 1517 * Sets JavaScript engine flags. 1518 * 1519 * @param flags JS engine flags in a String 1520 * 1521 * @hide pending API solidification 1522 */ 1523 public void setJsFlags(String flags) { 1524 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1525 } 1526 1527 /** 1528 * Inform WebView of the network state. This is used to set 1529 * the JavaScript property window.navigator.isOnline and 1530 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1531 * @param networkUp boolean indicating if network is available 1532 */ 1533 public void setNetworkAvailable(boolean networkUp) { 1534 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1535 networkUp ? 1 : 0, 0); 1536 } 1537 1538 /** 1539 * Inform WebView about the current network type. 1540 * {@hide} 1541 */ 1542 public void setNetworkType(String type, String subtype) { 1543 Map<String, String> map = new HashMap<String, String>(); 1544 map.put("type", type); 1545 map.put("subtype", subtype); 1546 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1547 } 1548 /** 1549 * Save the state of this WebView used in 1550 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1551 * method no longer stores the display data for this WebView. The previous 1552 * behavior could potentially leak files if {@link #restoreState} was never 1553 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1554 * and restoring the display data. 1555 * @param outState The Bundle to store the WebView state. 1556 * @return The same copy of the back/forward list used to save the state. If 1557 * saveState fails, the returned list will be null. 1558 * @see #savePicture 1559 * @see #restorePicture 1560 */ 1561 public WebBackForwardList saveState(Bundle outState) { 1562 if (outState == null) { 1563 return null; 1564 } 1565 // We grab a copy of the back/forward list because a client of WebView 1566 // may have invalidated the history list by calling clearHistory. 1567 WebBackForwardList list = copyBackForwardList(); 1568 final int currentIndex = list.getCurrentIndex(); 1569 final int size = list.getSize(); 1570 // We should fail saving the state if the list is empty or the index is 1571 // not in a valid range. 1572 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1573 return null; 1574 } 1575 outState.putInt("index", currentIndex); 1576 // FIXME: This should just be a byte[][] instead of ArrayList but 1577 // Parcel.java does not have the code to handle multi-dimensional 1578 // arrays. 1579 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1580 for (int i = 0; i < size; i++) { 1581 WebHistoryItem item = list.getItemAtIndex(i); 1582 if (null == item) { 1583 // FIXME: this shouldn't happen 1584 // need to determine how item got set to null 1585 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1586 return null; 1587 } 1588 byte[] data = item.getFlattenedData(); 1589 if (data == null) { 1590 // It would be very odd to not have any data for a given history 1591 // item. And we will fail to rebuild the history list without 1592 // flattened data. 1593 return null; 1594 } 1595 history.add(data); 1596 } 1597 outState.putSerializable("history", history); 1598 if (mCertificate != null) { 1599 outState.putBundle("certificate", 1600 SslCertificate.saveState(mCertificate)); 1601 } 1602 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1603 mZoomManager.saveZoomState(outState); 1604 return list; 1605 } 1606 1607 /** 1608 * Save the current display data to the Bundle given. Used in conjunction 1609 * with {@link #saveState}. 1610 * @param b A Bundle to store the display data. 1611 * @param dest The file to store the serialized picture data. Will be 1612 * overwritten with this WebView's picture data. 1613 * @return True if the picture was successfully saved. 1614 */ 1615 public boolean savePicture(Bundle b, final File dest) { 1616 if (dest == null || b == null) { 1617 return false; 1618 } 1619 final Picture p = capturePicture(); 1620 // Use a temporary file while writing to ensure the destination file 1621 // contains valid data. 1622 final File temp = new File(dest.getPath() + ".writing"); 1623 new Thread(new Runnable() { 1624 public void run() { 1625 FileOutputStream out = null; 1626 try { 1627 out = new FileOutputStream(temp); 1628 p.writeToStream(out); 1629 // Writing the picture succeeded, rename the temporary file 1630 // to the destination. 1631 temp.renameTo(dest); 1632 } catch (Exception e) { 1633 // too late to do anything about it. 1634 } finally { 1635 if (out != null) { 1636 try { 1637 out.close(); 1638 } catch (Exception e) { 1639 // Can't do anything about that 1640 } 1641 } 1642 temp.delete(); 1643 } 1644 } 1645 }).start(); 1646 // now update the bundle 1647 b.putInt("scrollX", mScrollX); 1648 b.putInt("scrollY", mScrollY); 1649 mZoomManager.saveZoomState(b); 1650 return true; 1651 } 1652 1653 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1654 int sx = b.getInt("scrollX", 0); 1655 int sy = b.getInt("scrollY", 0); 1656 1657 mDrawHistory = true; 1658 mHistoryPicture = p; 1659 mScrollX = sx; 1660 mScrollY = sy; 1661 mZoomManager.restoreZoomState(b); 1662 final float scale = mZoomManager.getScale(); 1663 mHistoryWidth = Math.round(p.getWidth() * scale); 1664 mHistoryHeight = Math.round(p.getHeight() * scale); 1665 1666 invalidate(); 1667 } 1668 1669 /** 1670 * Restore the display data that was save in {@link #savePicture}. Used in 1671 * conjunction with {@link #restoreState}. 1672 * @param b A Bundle containing the saved display data. 1673 * @param src The file where the picture data was stored. 1674 * @return True if the picture was successfully restored. 1675 */ 1676 public boolean restorePicture(Bundle b, File src) { 1677 if (src == null || b == null) { 1678 return false; 1679 } 1680 if (!src.exists()) { 1681 return false; 1682 } 1683 try { 1684 final FileInputStream in = new FileInputStream(src); 1685 final Bundle copy = new Bundle(b); 1686 new Thread(new Runnable() { 1687 public void run() { 1688 try { 1689 final Picture p = Picture.createFromStream(in); 1690 if (p != null) { 1691 // Post a runnable on the main thread to update the 1692 // history picture fields. 1693 mPrivateHandler.post(new Runnable() { 1694 public void run() { 1695 restoreHistoryPictureFields(p, copy); 1696 } 1697 }); 1698 } 1699 } finally { 1700 try { 1701 in.close(); 1702 } catch (Exception e) { 1703 // Nothing we can do now. 1704 } 1705 } 1706 } 1707 }).start(); 1708 } catch (FileNotFoundException e){ 1709 e.printStackTrace(); 1710 } 1711 return true; 1712 } 1713 1714 /** 1715 * Restore the state of this WebView from the given map used in 1716 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1717 * be called to restore the state of the WebView before using the object. If 1718 * it is called after the WebView has had a chance to build state (load 1719 * pages, create a back/forward list, etc.) there may be undesirable 1720 * side-effects. Please note that this method no longer restores the 1721 * display data for this WebView. See {@link #savePicture} and {@link 1722 * #restorePicture} for saving and restoring the display data. 1723 * @param inState The incoming Bundle of state. 1724 * @return The restored back/forward list or null if restoreState failed. 1725 * @see #savePicture 1726 * @see #restorePicture 1727 */ 1728 public WebBackForwardList restoreState(Bundle inState) { 1729 WebBackForwardList returnList = null; 1730 if (inState == null) { 1731 return returnList; 1732 } 1733 if (inState.containsKey("index") && inState.containsKey("history")) { 1734 mCertificate = SslCertificate.restoreState( 1735 inState.getBundle("certificate")); 1736 1737 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1738 final int index = inState.getInt("index"); 1739 // We can't use a clone of the list because we need to modify the 1740 // shared copy, so synchronize instead to prevent concurrent 1741 // modifications. 1742 synchronized (list) { 1743 final List<byte[]> history = 1744 (List<byte[]>) inState.getSerializable("history"); 1745 final int size = history.size(); 1746 // Check the index bounds so we don't crash in native code while 1747 // restoring the history index. 1748 if (index < 0 || index >= size) { 1749 return null; 1750 } 1751 for (int i = 0; i < size; i++) { 1752 byte[] data = history.remove(0); 1753 if (data == null) { 1754 // If we somehow have null data, we cannot reconstruct 1755 // the item and thus our history list cannot be rebuilt. 1756 return null; 1757 } 1758 WebHistoryItem item = new WebHistoryItem(data); 1759 list.addHistoryItem(item); 1760 } 1761 // Grab the most recent copy to return to the caller. 1762 returnList = copyBackForwardList(); 1763 // Update the copy to have the correct index. 1764 returnList.setCurrentIndex(index); 1765 } 1766 // Restore private browsing setting. 1767 if (inState.getBoolean("privateBrowsingEnabled")) { 1768 getSettings().setPrivateBrowsingEnabled(true); 1769 } 1770 mZoomManager.restoreZoomState(inState); 1771 // Remove all pending messages because we are restoring previous 1772 // state. 1773 mWebViewCore.removeMessages(); 1774 // Send a restore state message. 1775 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1776 } 1777 return returnList; 1778 } 1779 1780 /** 1781 * Load the given url with the extra headers. 1782 * @param url The url of the resource to load. 1783 * @param extraHeaders The extra headers sent with this url. This should not 1784 * include the common headers like "user-agent". If it does, it 1785 * will be replaced by the intrinsic value of the WebView. 1786 */ 1787 public void loadUrl(String url, Map<String, String> extraHeaders) { 1788 switchOutDrawHistory(); 1789 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1790 arg.mUrl = url; 1791 arg.mExtraHeaders = extraHeaders; 1792 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1793 clearHelpers(); 1794 } 1795 1796 /** 1797 * Load the given url. 1798 * @param url The url of the resource to load. 1799 */ 1800 public void loadUrl(String url) { 1801 if (url == null) { 1802 return; 1803 } 1804 loadUrl(url, null); 1805 } 1806 1807 /** 1808 * Load the url with postData using "POST" method into the WebView. If url 1809 * is not a network url, it will be loaded with {link 1810 * {@link #loadUrl(String)} instead. 1811 * 1812 * @param url The url of the resource to load. 1813 * @param postData The data will be passed to "POST" request. 1814 */ 1815 public void postUrl(String url, byte[] postData) { 1816 if (URLUtil.isNetworkUrl(url)) { 1817 switchOutDrawHistory(); 1818 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1819 arg.mUrl = url; 1820 arg.mPostData = postData; 1821 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1822 clearHelpers(); 1823 } else { 1824 loadUrl(url); 1825 } 1826 } 1827 1828 /** 1829 * Load the given data into the WebView. This will load the data into 1830 * WebView using the data: scheme. Content loaded through this mechanism 1831 * does not have the ability to load content from the network. 1832 * @param data A String of data in the given encoding. The date must 1833 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1834 * %27, %3f respectively. 1835 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1836 * @param encoding The encoding of the data. i.e. utf-8, base64 1837 */ 1838 public void loadData(String data, String mimeType, String encoding) { 1839 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1840 } 1841 1842 /** 1843 * Load the given data into the WebView, use the provided URL as the base 1844 * URL for the content. The base URL is the URL that represents the page 1845 * that is loaded through this interface. As such, it is used to resolve any 1846 * relative URLs. The historyUrl is used for the history entry. 1847 * <p> 1848 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1849 * files through "file:///android_asset/" for the sub resources is more 1850 * restricted. If you provide null or empty string as baseUrl, you won't be 1851 * able to access asset files. If the baseUrl is anything other than 1852 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1853 * sub resources. 1854 * 1855 * @param baseUrl Url to resolve relative paths with, if null defaults to 1856 * "about:blank" 1857 * @param data A String of data in the given encoding. 1858 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1859 * defaults to "text/html" 1860 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1861 * @param historyUrl URL to use as the history entry. Can be null. 1862 */ 1863 public void loadDataWithBaseURL(String baseUrl, String data, 1864 String mimeType, String encoding, String historyUrl) { 1865 1866 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1867 loadData(data, mimeType, encoding); 1868 return; 1869 } 1870 switchOutDrawHistory(); 1871 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1872 arg.mBaseUrl = baseUrl; 1873 arg.mData = data; 1874 arg.mMimeType = mimeType; 1875 arg.mEncoding = encoding; 1876 arg.mHistoryUrl = historyUrl; 1877 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1878 clearHelpers(); 1879 } 1880 1881 /** 1882 * Saves the current view as a web archive. 1883 * 1884 * @param filename The filename where the archive should be placed. 1885 */ 1886 public void saveWebArchive(String filename) { 1887 saveWebArchive(filename, false, null); 1888 } 1889 1890 /* package */ static class SaveWebArchiveMessage { 1891 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1892 mBasename = basename; 1893 mAutoname = autoname; 1894 mCallback = callback; 1895 } 1896 1897 /* package */ final String mBasename; 1898 /* package */ final boolean mAutoname; 1899 /* package */ final ValueCallback<String> mCallback; 1900 /* package */ String mResultFile; 1901 } 1902 1903 /** 1904 * Saves the current view as a web archive. 1905 * 1906 * @param basename The filename where the archive should be placed. 1907 * @param autoname If false, takes basename to be a file. If true, basename 1908 * is assumed to be a directory in which a filename will be 1909 * chosen according to the url of the current page. 1910 * @param callback Called after the web archive has been saved. The 1911 * parameter for onReceiveValue will either be the filename 1912 * under which the file was saved, or null if saving the 1913 * file failed. 1914 */ 1915 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1916 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1917 new SaveWebArchiveMessage(basename, autoname, callback)); 1918 } 1919 1920 /** 1921 * Stop the current load. 1922 */ 1923 public void stopLoading() { 1924 // TODO: should we clear all the messages in the queue before sending 1925 // STOP_LOADING? 1926 switchOutDrawHistory(); 1927 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1928 } 1929 1930 /** 1931 * Reload the current url. 1932 */ 1933 public void reload() { 1934 clearHelpers(); 1935 switchOutDrawHistory(); 1936 mWebViewCore.sendMessage(EventHub.RELOAD); 1937 } 1938 1939 /** 1940 * Return true if this WebView has a back history item. 1941 * @return True iff this WebView has a back history item. 1942 */ 1943 public boolean canGoBack() { 1944 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1945 synchronized (l) { 1946 if (l.getClearPending()) { 1947 return false; 1948 } else { 1949 return l.getCurrentIndex() > 0; 1950 } 1951 } 1952 } 1953 1954 /** 1955 * Go back in the history of this WebView. 1956 */ 1957 public void goBack() { 1958 goBackOrForward(-1); 1959 } 1960 1961 /** 1962 * Return true if this WebView has a forward history item. 1963 * @return True iff this Webview has a forward history item. 1964 */ 1965 public boolean canGoForward() { 1966 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1967 synchronized (l) { 1968 if (l.getClearPending()) { 1969 return false; 1970 } else { 1971 return l.getCurrentIndex() < l.getSize() - 1; 1972 } 1973 } 1974 } 1975 1976 /** 1977 * Go forward in the history of this WebView. 1978 */ 1979 public void goForward() { 1980 goBackOrForward(1); 1981 } 1982 1983 /** 1984 * Return true if the page can go back or forward the given 1985 * number of steps. 1986 * @param steps The negative or positive number of steps to move the 1987 * history. 1988 */ 1989 public boolean canGoBackOrForward(int steps) { 1990 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1991 synchronized (l) { 1992 if (l.getClearPending()) { 1993 return false; 1994 } else { 1995 int newIndex = l.getCurrentIndex() + steps; 1996 return newIndex >= 0 && newIndex < l.getSize(); 1997 } 1998 } 1999 } 2000 2001 /** 2002 * Go to the history item that is the number of steps away from 2003 * the current item. Steps is negative if backward and positive 2004 * if forward. 2005 * @param steps The number of steps to take back or forward in the back 2006 * forward list. 2007 */ 2008 public void goBackOrForward(int steps) { 2009 goBackOrForward(steps, false); 2010 } 2011 2012 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2013 if (steps != 0) { 2014 clearHelpers(); 2015 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2016 ignoreSnapshot ? 1 : 0); 2017 } 2018 } 2019 2020 /** 2021 * Returns true if private browsing is enabled in this WebView. 2022 */ 2023 public boolean isPrivateBrowsingEnabled() { 2024 return getSettings().isPrivateBrowsingEnabled(); 2025 } 2026 2027 private void startPrivateBrowsing() { 2028 getSettings().setPrivateBrowsingEnabled(true); 2029 } 2030 2031 private boolean extendScroll(int y) { 2032 int finalY = mScroller.getFinalY(); 2033 int newY = pinLocY(finalY + y); 2034 if (newY == finalY) return false; 2035 mScroller.setFinalY(newY); 2036 mScroller.extendDuration(computeDuration(0, y)); 2037 return true; 2038 } 2039 2040 /** 2041 * Scroll the contents of the view up by half the view size 2042 * @param top true to jump to the top of the page 2043 * @return true if the page was scrolled 2044 */ 2045 public boolean pageUp(boolean top) { 2046 if (mNativeClass == 0) { 2047 return false; 2048 } 2049 nativeClearCursor(); // start next trackball movement from page edge 2050 if (top) { 2051 // go to the top of the document 2052 return pinScrollTo(mScrollX, 0, true, 0); 2053 } 2054 // Page up 2055 int h = getHeight(); 2056 int y; 2057 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2058 y = -h + PAGE_SCROLL_OVERLAP; 2059 } else { 2060 y = -h / 2; 2061 } 2062 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2063 : extendScroll(y); 2064 } 2065 2066 /** 2067 * Scroll the contents of the view down by half the page size 2068 * @param bottom true to jump to bottom of page 2069 * @return true if the page was scrolled 2070 */ 2071 public boolean pageDown(boolean bottom) { 2072 if (mNativeClass == 0) { 2073 return false; 2074 } 2075 nativeClearCursor(); // start next trackball movement from page edge 2076 if (bottom) { 2077 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2078 } 2079 // Page down. 2080 int h = getHeight(); 2081 int y; 2082 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2083 y = h - PAGE_SCROLL_OVERLAP; 2084 } else { 2085 y = h / 2; 2086 } 2087 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2088 : extendScroll(y); 2089 } 2090 2091 /** 2092 * Clear the view so that onDraw() will draw nothing but white background, 2093 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2094 */ 2095 public void clearView() { 2096 mContentWidth = 0; 2097 mContentHeight = 0; 2098 setBaseLayer(0, null, false); 2099 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2100 } 2101 2102 /** 2103 * Return a new picture that captures the current display of the webview. 2104 * This is a copy of the display, and will be unaffected if the webview 2105 * later loads a different URL. 2106 * 2107 * @return a picture containing the current contents of the view. Note this 2108 * picture is of the entire document, and is not restricted to the 2109 * bounds of the view. 2110 */ 2111 public Picture capturePicture() { 2112 if (mNativeClass == 0) return null; 2113 Picture result = new Picture(); 2114 nativeCopyBaseContentToPicture(result); 2115 return result; 2116 } 2117 2118 /** 2119 * Return true if the browser is displaying a TextView for text input. 2120 */ 2121 private boolean inEditingMode() { 2122 return mWebTextView != null && mWebTextView.getParent() != null; 2123 } 2124 2125 /** 2126 * Remove the WebTextView. 2127 */ 2128 private void clearTextEntry() { 2129 if (inEditingMode()) { 2130 mWebTextView.remove(); 2131 } else { 2132 // The keyboard may be open with the WebView as the served view 2133 hideSoftKeyboard(); 2134 } 2135 } 2136 2137 /** 2138 * Return the current scale of the WebView 2139 * @return The current scale. 2140 */ 2141 public float getScale() { 2142 return mZoomManager.getScale(); 2143 } 2144 2145 /** 2146 * Set the initial scale for the WebView. 0 means default. If 2147 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2148 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2149 * WebView starts will this value as initial scale. 2150 * 2151 * @param scaleInPercent The initial scale in percent. 2152 */ 2153 public void setInitialScale(int scaleInPercent) { 2154 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2155 } 2156 2157 /** 2158 * Invoke the graphical zoom picker widget for this WebView. This will 2159 * result in the zoom widget appearing on the screen to control the zoom 2160 * level of this WebView. 2161 */ 2162 public void invokeZoomPicker() { 2163 if (!getSettings().supportZoom()) { 2164 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2165 return; 2166 } 2167 clearHelpers(); 2168 mZoomManager.invokeZoomPicker(); 2169 } 2170 2171 /** 2172 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2173 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2174 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2175 * anchor does not have a url or if it is a JavaScript url, the type will 2176 * be UNKNOWN_TYPE and the url has to be retrieved through 2177 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2178 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2179 * the "extra" field. A type of 2180 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2181 * a child node. If a phone number is found, the HitTestResult type is set 2182 * to PHONE_TYPE and the phone number is set in the "extra" field of 2183 * HitTestResult. If a map address is found, the HitTestResult type is set 2184 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2185 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2186 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2187 * HitTestResult type is set to UNKNOWN_TYPE. 2188 */ 2189 public HitTestResult getHitTestResult() { 2190 return hitTestResult(mInitialHitTestResult); 2191 } 2192 2193 private HitTestResult hitTestResult(HitTestResult fallback) { 2194 if (mNativeClass == 0) { 2195 return null; 2196 } 2197 2198 HitTestResult result = new HitTestResult(); 2199 if (nativeHasCursorNode()) { 2200 if (nativeCursorIsTextInput()) { 2201 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2202 } else { 2203 String text = nativeCursorText(); 2204 if (text != null) { 2205 if (text.startsWith(SCHEME_TEL)) { 2206 result.setType(HitTestResult.PHONE_TYPE); 2207 result.setExtra(text.substring(SCHEME_TEL.length())); 2208 } else if (text.startsWith(SCHEME_MAILTO)) { 2209 result.setType(HitTestResult.EMAIL_TYPE); 2210 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2211 } else if (text.startsWith(SCHEME_GEO)) { 2212 result.setType(HitTestResult.GEO_TYPE); 2213 result.setExtra(URLDecoder.decode(text 2214 .substring(SCHEME_GEO.length()))); 2215 } else if (nativeCursorIsAnchor()) { 2216 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2217 result.setExtra(text); 2218 } 2219 } 2220 } 2221 } else if (fallback != null) { 2222 /* If webkit causes a rebuild while the long press is in progress, 2223 * the cursor node may be reset, even if it is still around. This 2224 * uses the cursor node saved when the touch began. Since the 2225 * nativeImageURI below only changes the result if it is successful, 2226 * this uses the data beneath the touch if available or the original 2227 * tap data otherwise. 2228 */ 2229 Log.v(LOGTAG, "hitTestResult use fallback"); 2230 result = fallback; 2231 } 2232 int type = result.getType(); 2233 if (type == HitTestResult.UNKNOWN_TYPE 2234 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2235 // Now check to see if it is an image. 2236 int contentX = viewToContentX(mLastTouchX + mScrollX); 2237 int contentY = viewToContentY(mLastTouchY + mScrollY); 2238 String text = nativeImageURI(contentX, contentY); 2239 if (text != null) { 2240 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2241 HitTestResult.IMAGE_TYPE : 2242 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2243 result.setExtra(text); 2244 } 2245 } 2246 return result; 2247 } 2248 2249 // Called by JNI when the DOM has changed the focus. Clear the focus so 2250 // that new keys will go to the newly focused field 2251 private void domChangedFocus() { 2252 if (inEditingMode()) { 2253 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2254 } 2255 } 2256 /** 2257 * Request the anchor or image element URL at the last tapped point. 2258 * If hrefMsg is null, this method returns immediately and does not 2259 * dispatch hrefMsg to its target. If the tapped point hits an image, 2260 * an anchor, or an image in an anchor, the message associates 2261 * strings in named keys in its data. The value paired with the key 2262 * may be an empty string. 2263 * 2264 * @param hrefMsg This message will be dispatched with the result of the 2265 * request. The message data contains three keys: 2266 * - "url" returns the anchor's href attribute. 2267 * - "title" returns the anchor's text. 2268 * - "src" returns the image's src attribute. 2269 */ 2270 public void requestFocusNodeHref(Message hrefMsg) { 2271 if (hrefMsg == null) { 2272 return; 2273 } 2274 int contentX = viewToContentX(mLastTouchX + mScrollX); 2275 int contentY = viewToContentY(mLastTouchY + mScrollY); 2276 if (nativeHasCursorNode()) { 2277 Rect cursorBounds = nativeGetCursorRingBounds(); 2278 if (!cursorBounds.contains(contentX, contentY)) { 2279 int slop = viewToContentDimension(mNavSlop); 2280 cursorBounds.inset(-slop, -slop); 2281 if (cursorBounds.contains(contentX, contentY)) { 2282 contentX = (int) cursorBounds.centerX(); 2283 contentY = (int) cursorBounds.centerY(); 2284 } 2285 } 2286 } 2287 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2288 contentX, contentY, hrefMsg); 2289 } 2290 2291 /** 2292 * Request the url of the image last touched by the user. msg will be sent 2293 * to its target with a String representing the url as its object. 2294 * 2295 * @param msg This message will be dispatched with the result of the request 2296 * as the data member with "url" as key. The result can be null. 2297 */ 2298 public void requestImageRef(Message msg) { 2299 if (0 == mNativeClass) return; // client isn't initialized 2300 int contentX = viewToContentX(mLastTouchX + mScrollX); 2301 int contentY = viewToContentY(mLastTouchY + mScrollY); 2302 String ref = nativeImageURI(contentX, contentY); 2303 Bundle data = msg.getData(); 2304 data.putString("url", ref); 2305 msg.setData(data); 2306 msg.sendToTarget(); 2307 } 2308 2309 static int pinLoc(int x, int viewMax, int docMax) { 2310// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2311 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2312 // pin the short document to the top/left of the screen 2313 x = 0; 2314// Log.d(LOGTAG, "--- center " + x); 2315 } else if (x < 0) { 2316 x = 0; 2317// Log.d(LOGTAG, "--- zero"); 2318 } else if (x + viewMax > docMax) { 2319 x = docMax - viewMax; 2320// Log.d(LOGTAG, "--- pin " + x); 2321 } 2322 return x; 2323 } 2324 2325 // Expects x in view coordinates 2326 int pinLocX(int x) { 2327 if (mInOverScrollMode) return x; 2328 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2329 } 2330 2331 // Expects y in view coordinates 2332 int pinLocY(int y) { 2333 if (mInOverScrollMode) return y; 2334 return pinLoc(y, getViewHeightWithTitle(), 2335 computeRealVerticalScrollRange() + getTitleHeight()); 2336 } 2337 2338 /** 2339 * A title bar which is embedded in this WebView, and scrolls along with it 2340 * vertically, but not horizontally. 2341 */ 2342 private View mTitleBar; 2343 2344 /** 2345 * the title bar rendering gravity 2346 */ 2347 private int mTitleGravity; 2348 2349 /** 2350 * Add or remove a title bar to be embedded into the WebView, and scroll 2351 * along with it vertically, while remaining in view horizontally. Pass 2352 * null to remove the title bar from the WebView, and return to drawing 2353 * the WebView normally without translating to account for the title bar. 2354 * @hide 2355 */ 2356 public void setEmbeddedTitleBar(View v) { 2357 if (mTitleBar == v) return; 2358 if (mTitleBar != null) { 2359 removeView(mTitleBar); 2360 } 2361 if (null != v) { 2362 addView(v, new AbsoluteLayout.LayoutParams( 2363 ViewGroup.LayoutParams.MATCH_PARENT, 2364 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2365 } 2366 mTitleBar = v; 2367 } 2368 2369 /** 2370 * Set where to render the embedded title bar 2371 * NO_GRAVITY at the top of the page 2372 * TOP at the top of the screen 2373 * @hide 2374 */ 2375 public void setTitleBarGravity(int gravity) { 2376 mTitleGravity = gravity; 2377 } 2378 2379 /** 2380 * Given a distance in view space, convert it to content space. Note: this 2381 * does not reflect translation, just scaling, so this should not be called 2382 * with coordinates, but should be called for dimensions like width or 2383 * height. 2384 */ 2385 private int viewToContentDimension(int d) { 2386 return Math.round(d * mZoomManager.getInvScale()); 2387 } 2388 2389 /** 2390 * Given an x coordinate in view space, convert it to content space. Also 2391 * may be used for absolute heights (such as for the WebTextView's 2392 * textSize, which is unaffected by the height of the title bar). 2393 */ 2394 /*package*/ int viewToContentX(int x) { 2395 return viewToContentDimension(x); 2396 } 2397 2398 /** 2399 * Given a y coordinate in view space, convert it to content space. 2400 * Takes into account the height of the title bar if there is one 2401 * embedded into the WebView. 2402 */ 2403 /*package*/ int viewToContentY(int y) { 2404 return viewToContentDimension(y - getTitleHeight()); 2405 } 2406 2407 /** 2408 * Given a x coordinate in view space, convert it to content space. 2409 * Returns the result as a float. 2410 */ 2411 private float viewToContentXf(int x) { 2412 return x * mZoomManager.getInvScale(); 2413 } 2414 2415 /** 2416 * Given a y coordinate in view space, convert it to content space. 2417 * Takes into account the height of the title bar if there is one 2418 * embedded into the WebView. Returns the result as a float. 2419 */ 2420 private float viewToContentYf(int y) { 2421 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2422 } 2423 2424 /** 2425 * Given a distance in content space, convert it to view space. Note: this 2426 * does not reflect translation, just scaling, so this should not be called 2427 * with coordinates, but should be called for dimensions like width or 2428 * height. 2429 */ 2430 /*package*/ int contentToViewDimension(int d) { 2431 return Math.round(d * mZoomManager.getScale()); 2432 } 2433 2434 /** 2435 * Given an x coordinate in content space, convert it to view 2436 * space. 2437 */ 2438 /*package*/ int contentToViewX(int x) { 2439 return contentToViewDimension(x); 2440 } 2441 2442 /** 2443 * Given a y coordinate in content space, convert it to view 2444 * space. Takes into account the height of the title bar. 2445 */ 2446 /*package*/ int contentToViewY(int y) { 2447 return contentToViewDimension(y) + getTitleHeight(); 2448 } 2449 2450 private Rect contentToViewRect(Rect x) { 2451 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2452 contentToViewX(x.right), contentToViewY(x.bottom)); 2453 } 2454 2455 /* To invalidate a rectangle in content coordinates, we need to transform 2456 the rect into view coordinates, so we can then call invalidate(...). 2457 2458 Normally, we would just call contentToView[XY](...), which eventually 2459 calls Math.round(coordinate * mActualScale). However, for invalidates, 2460 we need to account for the slop that occurs with antialiasing. To 2461 address that, we are a little more liberal in the size of the rect that 2462 we invalidate. 2463 2464 This liberal calculation calls floor() for the top/left, and ceil() for 2465 the bottom/right coordinates. This catches the possible extra pixels of 2466 antialiasing that we might have missed with just round(). 2467 */ 2468 2469 // Called by JNI to invalidate the View, given rectangle coordinates in 2470 // content space 2471 private void viewInvalidate(int l, int t, int r, int b) { 2472 final float scale = mZoomManager.getScale(); 2473 final int dy = getTitleHeight(); 2474 invalidate((int)Math.floor(l * scale), 2475 (int)Math.floor(t * scale) + dy, 2476 (int)Math.ceil(r * scale), 2477 (int)Math.ceil(b * scale) + dy); 2478 } 2479 2480 // Called by JNI to invalidate the View after a delay, given rectangle 2481 // coordinates in content space 2482 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2483 final float scale = mZoomManager.getScale(); 2484 final int dy = getTitleHeight(); 2485 postInvalidateDelayed(delay, 2486 (int)Math.floor(l * scale), 2487 (int)Math.floor(t * scale) + dy, 2488 (int)Math.ceil(r * scale), 2489 (int)Math.ceil(b * scale) + dy); 2490 } 2491 2492 private void invalidateContentRect(Rect r) { 2493 viewInvalidate(r.left, r.top, r.right, r.bottom); 2494 } 2495 2496 // stop the scroll animation, and don't let a subsequent fling add 2497 // to the existing velocity 2498 private void abortAnimation() { 2499 mScroller.abortAnimation(); 2500 mLastVelocity = 0; 2501 } 2502 2503 /* call from webcoreview.draw(), so we're still executing in the UI thread 2504 */ 2505 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2506 2507 // premature data from webkit, ignore 2508 if ((w | h) == 0) { 2509 return; 2510 } 2511 2512 // don't abort a scroll animation if we didn't change anything 2513 if (mContentWidth != w || mContentHeight != h) { 2514 // record new dimensions 2515 mContentWidth = w; 2516 mContentHeight = h; 2517 // If history Picture is drawn, don't update scroll. They will be 2518 // updated when we get out of that mode. 2519 if (!mDrawHistory) { 2520 // repin our scroll, taking into account the new content size 2521 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2522 if (!mScroller.isFinished()) { 2523 // We are in the middle of a scroll. Repin the final scroll 2524 // position. 2525 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2526 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2527 } 2528 } 2529 } 2530 contentSizeChanged(updateLayout); 2531 } 2532 2533 // Used to avoid sending many visible rect messages. 2534 private Rect mLastVisibleRectSent; 2535 private Rect mLastGlobalRect; 2536 2537 Rect sendOurVisibleRect() { 2538 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2539 Rect rect = new Rect(); 2540 calcOurContentVisibleRect(rect); 2541 // Rect.equals() checks for null input. 2542 if (!rect.equals(mLastVisibleRectSent)) { 2543 Point pos = new Point(rect.left, rect.top); 2544 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2545 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2546 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, pos); 2547 mLastVisibleRectSent = rect; 2548 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2549 } 2550 Rect globalRect = new Rect(); 2551 if (getGlobalVisibleRect(globalRect) 2552 && !globalRect.equals(mLastGlobalRect)) { 2553 if (DebugFlags.WEB_VIEW) { 2554 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2555 + globalRect.top + ",r=" + globalRect.right + ",b=" 2556 + globalRect.bottom); 2557 } 2558 // TODO: the global offset is only used by windowRect() 2559 // in ChromeClientAndroid ; other clients such as touch 2560 // and mouse events could return view + screen relative points. 2561 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2562 mLastGlobalRect = globalRect; 2563 } 2564 return rect; 2565 } 2566 2567 // Sets r to be the visible rectangle of our webview in view coordinates 2568 private void calcOurVisibleRect(Rect r) { 2569 Point p = new Point(); 2570 getGlobalVisibleRect(r, p); 2571 r.offset(-p.x, -p.y); 2572 } 2573 2574 // Sets r to be our visible rectangle in content coordinates 2575 private void calcOurContentVisibleRect(Rect r) { 2576 calcOurVisibleRect(r); 2577 r.left = viewToContentX(r.left); 2578 // viewToContentY will remove the total height of the title bar. Add 2579 // the visible height back in to account for the fact that if the title 2580 // bar is partially visible, the part of the visible rect which is 2581 // displaying our content is displaced by that amount. 2582 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2583 r.right = viewToContentX(r.right); 2584 r.bottom = viewToContentY(r.bottom); 2585 } 2586 2587 // Sets r to be our visible rectangle in content coordinates. We use this 2588 // method on the native side to compute the position of the fixed layers. 2589 // Uses floating coordinates (necessary to correctly place elements when 2590 // the scale factor is not 1) 2591 private void calcOurContentVisibleRectF(RectF r) { 2592 Rect ri = new Rect(0,0,0,0); 2593 calcOurVisibleRect(ri); 2594 r.left = viewToContentXf(ri.left); 2595 // viewToContentY will remove the total height of the title bar. Add 2596 // the visible height back in to account for the fact that if the title 2597 // bar is partially visible, the part of the visible rect which is 2598 // displaying our content is displaced by that amount. 2599 r.top = viewToContentYf(ri.top + getVisibleTitleHeight()); 2600 r.right = viewToContentXf(ri.right); 2601 r.bottom = viewToContentYf(ri.bottom); 2602 } 2603 2604 static class ViewSizeData { 2605 int mWidth; 2606 int mHeight; 2607 float mHeightWidthRatio; 2608 int mActualViewHeight; 2609 int mTextWrapWidth; 2610 int mAnchorX; 2611 int mAnchorY; 2612 float mScale; 2613 boolean mIgnoreHeight; 2614 } 2615 2616 /** 2617 * Compute unzoomed width and height, and if they differ from the last 2618 * values we sent, send them to webkit (to be used as new viewport) 2619 * 2620 * @param force ensures that the message is sent to webkit even if the width 2621 * or height has not changed since the last message 2622 * 2623 * @return true if new values were sent 2624 */ 2625 boolean sendViewSizeZoom(boolean force) { 2626 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2627 2628 int viewWidth = getViewWidth(); 2629 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2630 // This height could be fixed and be different from actual visible height. 2631 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2632 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2633 // Make the ratio more accurate than (newHeight / newWidth), since the 2634 // latter both are calculated and rounded. 2635 float heightWidthRatio = (float) viewHeight / viewWidth; 2636 /* 2637 * Because the native side may have already done a layout before the 2638 * View system was able to measure us, we have to send a height of 0 to 2639 * remove excess whitespace when we grow our width. This will trigger a 2640 * layout and a change in content size. This content size change will 2641 * mean that contentSizeChanged will either call this method directly or 2642 * indirectly from onSizeChanged. 2643 */ 2644 if (newWidth > mLastWidthSent && mWrapContent) { 2645 newHeight = 0; 2646 heightWidthRatio = 0; 2647 } 2648 // Actual visible content height. 2649 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2650 // Avoid sending another message if the dimensions have not changed. 2651 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2652 actualViewHeight != mLastActualHeightSent) { 2653 ViewSizeData data = new ViewSizeData(); 2654 data.mWidth = newWidth; 2655 data.mHeight = newHeight; 2656 data.mHeightWidthRatio = heightWidthRatio; 2657 data.mActualViewHeight = actualViewHeight; 2658 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2659 data.mScale = mZoomManager.getScale(); 2660 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2661 && !mHeightCanMeasure; 2662 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2663 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2664 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2665 mLastWidthSent = newWidth; 2666 mLastHeightSent = newHeight; 2667 mLastActualHeightSent = actualViewHeight; 2668 mZoomManager.clearDocumentAnchor(); 2669 return true; 2670 } 2671 return false; 2672 } 2673 2674 private int computeRealHorizontalScrollRange() { 2675 if (mDrawHistory) { 2676 return mHistoryWidth; 2677 } else { 2678 // to avoid rounding error caused unnecessary scrollbar, use floor 2679 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2680 } 2681 } 2682 2683 @Override 2684 protected int computeHorizontalScrollRange() { 2685 int range = computeRealHorizontalScrollRange(); 2686 2687 // Adjust reported range if overscrolled to compress the scroll bars 2688 final int scrollX = mScrollX; 2689 final int overscrollRight = computeMaxScrollX(); 2690 if (scrollX < 0) { 2691 range -= scrollX; 2692 } else if (scrollX > overscrollRight) { 2693 range += scrollX - overscrollRight; 2694 } 2695 2696 return range; 2697 } 2698 2699 @Override 2700 protected int computeHorizontalScrollOffset() { 2701 return Math.max(mScrollX, 0); 2702 } 2703 2704 private int computeRealVerticalScrollRange() { 2705 if (mDrawHistory) { 2706 return mHistoryHeight; 2707 } else { 2708 // to avoid rounding error caused unnecessary scrollbar, use floor 2709 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2710 } 2711 } 2712 2713 @Override 2714 protected int computeVerticalScrollRange() { 2715 int range = computeRealVerticalScrollRange(); 2716 2717 // Adjust reported range if overscrolled to compress the scroll bars 2718 final int scrollY = mScrollY; 2719 final int overscrollBottom = computeMaxScrollY(); 2720 if (scrollY < 0) { 2721 range -= scrollY; 2722 } else if (scrollY > overscrollBottom) { 2723 range += scrollY - overscrollBottom; 2724 } 2725 2726 return range; 2727 } 2728 2729 @Override 2730 protected int computeVerticalScrollOffset() { 2731 return Math.max(mScrollY - getTitleHeight(), 0); 2732 } 2733 2734 @Override 2735 protected int computeVerticalScrollExtent() { 2736 return getViewHeight(); 2737 } 2738 2739 /** @hide */ 2740 @Override 2741 protected void onDrawVerticalScrollBar(Canvas canvas, 2742 Drawable scrollBar, 2743 int l, int t, int r, int b) { 2744 if (mScrollY < 0) { 2745 t -= mScrollY; 2746 } 2747 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2748 scrollBar.draw(canvas); 2749 } 2750 2751 @Override 2752 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2753 boolean clampedY) { 2754 // Special-case layer scrolling so that we do not trigger normal scroll 2755 // updating. 2756 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2757 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2758 mScrollingLayerRect.left = scrollX; 2759 mScrollingLayerRect.top = scrollY; 2760 invalidate(); 2761 return; 2762 } 2763 mInOverScrollMode = false; 2764 int maxX = computeMaxScrollX(); 2765 int maxY = computeMaxScrollY(); 2766 if (maxX == 0) { 2767 // do not over scroll x if the page just fits the screen 2768 scrollX = pinLocX(scrollX); 2769 } else if (scrollX < 0 || scrollX > maxX) { 2770 mInOverScrollMode = true; 2771 } 2772 if (scrollY < 0 || scrollY > maxY) { 2773 mInOverScrollMode = true; 2774 } 2775 2776 int oldX = mScrollX; 2777 int oldY = mScrollY; 2778 2779 super.scrollTo(scrollX, scrollY); 2780 2781 if (mOverScrollGlow != null) { 2782 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2783 } 2784 } 2785 2786 /** 2787 * Get the url for the current page. This is not always the same as the url 2788 * passed to WebViewClient.onPageStarted because although the load for 2789 * that url has begun, the current page may not have changed. 2790 * @return The url for the current page. 2791 */ 2792 public String getUrl() { 2793 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2794 return h != null ? h.getUrl() : null; 2795 } 2796 2797 /** 2798 * Get the original url for the current page. This is not always the same 2799 * as the url passed to WebViewClient.onPageStarted because although the 2800 * load for that url has begun, the current page may not have changed. 2801 * Also, there may have been redirects resulting in a different url to that 2802 * originally requested. 2803 * @return The url that was originally requested for the current page. 2804 */ 2805 public String getOriginalUrl() { 2806 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2807 return h != null ? h.getOriginalUrl() : null; 2808 } 2809 2810 /** 2811 * Get the title for the current page. This is the title of the current page 2812 * until WebViewClient.onReceivedTitle is called. 2813 * @return The title for the current page. 2814 */ 2815 public String getTitle() { 2816 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2817 return h != null ? h.getTitle() : null; 2818 } 2819 2820 /** 2821 * Get the favicon for the current page. This is the favicon of the current 2822 * page until WebViewClient.onReceivedIcon is called. 2823 * @return The favicon for the current page. 2824 */ 2825 public Bitmap getFavicon() { 2826 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2827 return h != null ? h.getFavicon() : null; 2828 } 2829 2830 /** 2831 * Get the touch icon url for the apple-touch-icon <link> element, or 2832 * a URL on this site's server pointing to the standard location of a 2833 * touch icon. 2834 * @hide 2835 */ 2836 public String getTouchIconUrl() { 2837 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2838 return h != null ? h.getTouchIconUrl() : null; 2839 } 2840 2841 /** 2842 * Get the progress for the current page. 2843 * @return The progress for the current page between 0 and 100. 2844 */ 2845 public int getProgress() { 2846 return mCallbackProxy.getProgress(); 2847 } 2848 2849 /** 2850 * @return the height of the HTML content. 2851 */ 2852 public int getContentHeight() { 2853 return mContentHeight; 2854 } 2855 2856 /** 2857 * @return the width of the HTML content. 2858 * @hide 2859 */ 2860 public int getContentWidth() { 2861 return mContentWidth; 2862 } 2863 2864 /** 2865 * Pause all layout, parsing, and JavaScript timers for all webviews. This 2866 * is a global requests, not restricted to just this webview. This can be 2867 * useful if the application has been paused. 2868 */ 2869 public void pauseTimers() { 2870 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2871 } 2872 2873 /** 2874 * Resume all layout, parsing, and JavaScript timers for all webviews. 2875 * This will resume dispatching all timers. 2876 */ 2877 public void resumeTimers() { 2878 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2879 } 2880 2881 /** 2882 * Call this to pause any extra processing associated with this WebView and 2883 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 2884 * is taken offscreen, this could be called to reduce unnecessary CPU or 2885 * network traffic. When the WebView is again "active", call onResume(). 2886 * 2887 * Note that this differs from pauseTimers(), which affects all WebViews. 2888 */ 2889 public void onPause() { 2890 if (!mIsPaused) { 2891 mIsPaused = true; 2892 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2893 } 2894 } 2895 2896 /** 2897 * Call this to resume a WebView after a previous call to onPause(). 2898 */ 2899 public void onResume() { 2900 if (mIsPaused) { 2901 mIsPaused = false; 2902 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2903 } 2904 } 2905 2906 /** 2907 * Returns true if the view is paused, meaning onPause() was called. Calling 2908 * onResume() sets the paused state back to false. 2909 * @hide 2910 */ 2911 public boolean isPaused() { 2912 return mIsPaused; 2913 } 2914 2915 /** 2916 * Call this to inform the view that memory is low so that it can 2917 * free any available memory. 2918 */ 2919 public void freeMemory() { 2920 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2921 } 2922 2923 /** 2924 * Clear the resource cache. Note that the cache is per-application, so 2925 * this will clear the cache for all WebViews used. 2926 * 2927 * @param includeDiskFiles If false, only the RAM cache is cleared. 2928 */ 2929 public void clearCache(boolean includeDiskFiles) { 2930 // Note: this really needs to be a static method as it clears cache for all 2931 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2932 // we can't make this static. 2933 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2934 includeDiskFiles ? 1 : 0, 0); 2935 } 2936 2937 /** 2938 * Make sure that clearing the form data removes the adapter from the 2939 * currently focused textfield if there is one. 2940 */ 2941 public void clearFormData() { 2942 if (inEditingMode()) { 2943 AutoCompleteAdapter adapter = null; 2944 mWebTextView.setAdapterCustom(adapter); 2945 } 2946 } 2947 2948 /** 2949 * Tell the WebView to clear its internal back/forward list. 2950 */ 2951 public void clearHistory() { 2952 mCallbackProxy.getBackForwardList().setClearPending(); 2953 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2954 } 2955 2956 /** 2957 * Clear the SSL preferences table stored in response to proceeding with SSL 2958 * certificate errors. 2959 */ 2960 public void clearSslPreferences() { 2961 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2962 } 2963 2964 /** 2965 * Return the WebBackForwardList for this WebView. This contains the 2966 * back/forward list for use in querying each item in the history stack. 2967 * This is a copy of the private WebBackForwardList so it contains only a 2968 * snapshot of the current state. Multiple calls to this method may return 2969 * different objects. The object returned from this method will not be 2970 * updated to reflect any new state. 2971 */ 2972 public WebBackForwardList copyBackForwardList() { 2973 return mCallbackProxy.getBackForwardList().clone(); 2974 } 2975 2976 /* 2977 * Highlight and scroll to the next occurance of String in findAll. 2978 * Wraps the page infinitely, and scrolls. Must be called after 2979 * calling findAll. 2980 * 2981 * @param forward Direction to search. 2982 */ 2983 public void findNext(boolean forward) { 2984 if (0 == mNativeClass) return; // client isn't initialized 2985 nativeFindNext(forward); 2986 } 2987 2988 /* 2989 * Find all instances of find on the page and highlight them. 2990 * @param find String to find. 2991 * @return int The number of occurances of the String "find" 2992 * that were found. 2993 */ 2994 public int findAll(String find) { 2995 if (0 == mNativeClass) return 0; // client isn't initialized 2996 int result = find != null ? nativeFindAll(find.toLowerCase(), 2997 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 2998 invalidate(); 2999 mLastFind = find; 3000 return result; 3001 } 3002 3003 /** 3004 * Start an ActionMode for finding text in this WebView. 3005 * @param text If non-null, will be the initial text to search for. 3006 * Otherwise, the last String searched for in this WebView will 3007 * be used to start. 3008 * @param showIme If true, show the IME, assuming the user will begin typing. 3009 * If false and text is non-null, perform a find all. 3010 * @return boolean True if the find dialog is shown, false otherwise. 3011 */ 3012 public boolean showFindDialog(String text, boolean showIme) { 3013 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3014 if (startActionMode(callback) == null) { 3015 // Could not start the action mode, so end Find on page 3016 return false; 3017 } 3018 mFindCallback = callback; 3019 setFindIsUp(true); 3020 mFindCallback.setWebView(this); 3021 if (showIme) { 3022 mFindCallback.showSoftInput(); 3023 } else if (text != null) { 3024 mFindCallback.setText(text); 3025 mFindCallback.findAll(); 3026 return true; 3027 } 3028 if (text == null) { 3029 text = mLastFind; 3030 } 3031 if (text != null) { 3032 mFindCallback.setText(text); 3033 } 3034 return true; 3035 } 3036 3037 /** 3038 * Keep track of the find callback so that we can remove its titlebar if 3039 * necessary. 3040 */ 3041 private FindActionModeCallback mFindCallback; 3042 3043 /** 3044 * Toggle whether the find dialog is showing, for both native and Java. 3045 */ 3046 private void setFindIsUp(boolean isUp) { 3047 mFindIsUp = isUp; 3048 if (0 == mNativeClass) return; // client isn't initialized 3049 nativeSetFindIsUp(isUp); 3050 } 3051 3052 /** 3053 * Return the index of the currently highlighted match. 3054 */ 3055 int findIndex() { 3056 if (0 == mNativeClass) return -1; 3057 return nativeFindIndex(); 3058 } 3059 3060 // Used to know whether the find dialog is open. Affects whether 3061 // or not we draw the highlights for matches. 3062 private boolean mFindIsUp; 3063 3064 // Keep track of the last string sent, so we can search again when find is 3065 // reopened. 3066 private String mLastFind; 3067 3068 /** 3069 * Return the first substring consisting of the address of a physical 3070 * location. Currently, only addresses in the United States are detected, 3071 * and consist of: 3072 * - a house number 3073 * - a street name 3074 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3075 * - a city name 3076 * - a state or territory, either spelled out or two-letter abbr. 3077 * - an optional 5 digit or 9 digit zip code. 3078 * 3079 * All names must be correctly capitalized, and the zip code, if present, 3080 * must be valid for the state. The street type must be a standard USPS 3081 * spelling or abbreviation. The state or territory must also be spelled 3082 * or abbreviated using USPS standards. The house number may not exceed 3083 * five digits. 3084 * @param addr The string to search for addresses. 3085 * 3086 * @return the address, or if no address is found, return null. 3087 */ 3088 public static String findAddress(String addr) { 3089 return findAddress(addr, false); 3090 } 3091 3092 /** 3093 * @hide 3094 * Return the first substring consisting of the address of a physical 3095 * location. Currently, only addresses in the United States are detected, 3096 * and consist of: 3097 * - a house number 3098 * - a street name 3099 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3100 * - a city name 3101 * - a state or territory, either spelled out or two-letter abbr. 3102 * - an optional 5 digit or 9 digit zip code. 3103 * 3104 * Names are optionally capitalized, and the zip code, if present, 3105 * must be valid for the state. The street type must be a standard USPS 3106 * spelling or abbreviation. The state or territory must also be spelled 3107 * or abbreviated using USPS standards. The house number may not exceed 3108 * five digits. 3109 * @param addr The string to search for addresses. 3110 * @param caseInsensitive addr Set to true to make search ignore case. 3111 * 3112 * @return the address, or if no address is found, return null. 3113 */ 3114 public static String findAddress(String addr, boolean caseInsensitive) { 3115 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3116 } 3117 3118 /* 3119 * Clear the highlighting surrounding text matches created by findAll. 3120 */ 3121 public void clearMatches() { 3122 if (mNativeClass == 0) 3123 return; 3124 nativeSetFindIsEmpty(); 3125 invalidate(); 3126 } 3127 3128 /** 3129 * Called when the find ActionMode ends. 3130 */ 3131 void notifyFindDialogDismissed() { 3132 mFindCallback = null; 3133 if (mWebViewCore == null) { 3134 return; 3135 } 3136 clearMatches(); 3137 setFindIsUp(false); 3138 // Now that the dialog has been removed, ensure that we scroll to a 3139 // location that is not beyond the end of the page. 3140 pinScrollTo(mScrollX, mScrollY, false, 0); 3141 invalidate(); 3142 } 3143 3144 /** 3145 * Query the document to see if it contains any image references. The 3146 * message object will be dispatched with arg1 being set to 1 if images 3147 * were found and 0 if the document does not reference any images. 3148 * @param response The message that will be dispatched with the result. 3149 */ 3150 public void documentHasImages(Message response) { 3151 if (response == null) { 3152 return; 3153 } 3154 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3155 } 3156 3157 /** 3158 * Request the scroller to abort any ongoing animation 3159 * 3160 * @hide 3161 */ 3162 public void stopScroll() { 3163 mScroller.forceFinished(true); 3164 mLastVelocity = 0; 3165 } 3166 3167 @Override 3168 public void computeScroll() { 3169 if (mScroller.computeScrollOffset()) { 3170 int oldX = mScrollX; 3171 int oldY = mScrollY; 3172 int x = mScroller.getCurrX(); 3173 int y = mScroller.getCurrY(); 3174 invalidate(); // So we draw again 3175 3176 if (!mScroller.isFinished()) { 3177 int rangeX = computeMaxScrollX(); 3178 int rangeY = computeMaxScrollY(); 3179 int overflingDistance = mOverflingDistance; 3180 3181 // Use the layer's scroll data if needed. 3182 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3183 oldX = mScrollingLayerRect.left; 3184 oldY = mScrollingLayerRect.top; 3185 rangeX = mScrollingLayerRect.right; 3186 rangeY = mScrollingLayerRect.bottom; 3187 // No overscrolling for layers. 3188 overflingDistance = 0; 3189 } 3190 3191 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3192 rangeX, rangeY, 3193 overflingDistance, overflingDistance, false); 3194 3195 if (mOverScrollGlow != null) { 3196 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3197 } 3198 } else { 3199 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3200 mScrollX = x; 3201 mScrollY = y; 3202 } else { 3203 // Update the layer position instead of WebView. 3204 nativeScrollLayer(mScrollingLayer, x, y); 3205 mScrollingLayerRect.left = x; 3206 mScrollingLayerRect.top = y; 3207 } 3208 abortAnimation(); 3209 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3210 WebViewCore.resumePriority(); 3211 if (!mSelectingText) { 3212 WebViewCore.resumeUpdatePicture(mWebViewCore); 3213 } 3214 if (oldX != mScrollX || oldY != mScrollY) { 3215 sendOurVisibleRect(); 3216 } 3217 } 3218 } else { 3219 super.computeScroll(); 3220 } 3221 } 3222 3223 private static int computeDuration(int dx, int dy) { 3224 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3225 int duration = distance * 1000 / STD_SPEED; 3226 return Math.min(duration, MAX_DURATION); 3227 } 3228 3229 // helper to pin the scrollBy parameters (already in view coordinates) 3230 // returns true if the scroll was changed 3231 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3232 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3233 } 3234 // helper to pin the scrollTo parameters (already in view coordinates) 3235 // returns true if the scroll was changed 3236 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3237 x = pinLocX(x); 3238 y = pinLocY(y); 3239 int dx = x - mScrollX; 3240 int dy = y - mScrollY; 3241 3242 if ((dx | dy) == 0) { 3243 return false; 3244 } 3245 abortAnimation(); 3246 if (animate) { 3247 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3248 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3249 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3250 awakenScrollBars(mScroller.getDuration()); 3251 invalidate(); 3252 } else { 3253 scrollTo(x, y); 3254 } 3255 return true; 3256 } 3257 3258 // Scale from content to view coordinates, and pin. 3259 // Also called by jni webview.cpp 3260 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3261 if (mDrawHistory) { 3262 // disallow WebView to change the scroll position as History Picture 3263 // is used in the view system. 3264 // TODO: as we switchOutDrawHistory when trackball or navigation 3265 // keys are hit, this should be safe. Right? 3266 return false; 3267 } 3268 cx = contentToViewDimension(cx); 3269 cy = contentToViewDimension(cy); 3270 if (mHeightCanMeasure) { 3271 // move our visible rect according to scroll request 3272 if (cy != 0) { 3273 Rect tempRect = new Rect(); 3274 calcOurVisibleRect(tempRect); 3275 tempRect.offset(cx, cy); 3276 requestRectangleOnScreen(tempRect); 3277 } 3278 // FIXME: We scroll horizontally no matter what because currently 3279 // ScrollView and ListView will not scroll horizontally. 3280 // FIXME: Why do we only scroll horizontally if there is no 3281 // vertical scroll? 3282// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3283 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3284 } else { 3285 return pinScrollBy(cx, cy, animate, 0); 3286 } 3287 } 3288 3289 /** 3290 * Called by CallbackProxy when the page starts loading. 3291 * @param url The URL of the page which has started loading. 3292 */ 3293 /* package */ void onPageStarted(String url) { 3294 // every time we start a new page, we want to reset the 3295 // WebView certificate: if the new site is secure, we 3296 // will reload it and get a new certificate set; 3297 // if the new site is not secure, the certificate must be 3298 // null, and that will be the case 3299 setCertificate(null); 3300 3301 // reset the flag since we set to true in if need after 3302 // loading is see onPageFinished(Url) 3303 mAccessibilityScriptInjected = false; 3304 } 3305 3306 /** 3307 * Called by CallbackProxy when the page finishes loading. 3308 * @param url The URL of the page which has finished loading. 3309 */ 3310 /* package */ void onPageFinished(String url) { 3311 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3312 // If the user is now on a different page, or has scrolled the page 3313 // past the point where the title bar is offscreen, ignore the 3314 // scroll request. 3315 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3316 && mScrollX == 0 && mScrollY == 0) { 3317 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3318 SLIDE_TITLE_DURATION); 3319 } 3320 mPageThatNeedsToSlideTitleBarOffScreen = null; 3321 } 3322 mZoomManager.onPageFinished(url); 3323 injectAccessibilityForUrl(url); 3324 } 3325 3326 /** 3327 * This method injects accessibility in the loaded document if accessibility 3328 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3329 * If no URL specific script is found or JavaScript is disabled we fallback to 3330 * the default {@link AccessibilityInjector} implementation. 3331 * </p> 3332 * If the URL has the "axs" paramter set to 1 it has already done the 3333 * script injection so we do nothing. If the parameter is set to 0 3334 * the URL opts out accessibility script injection so we fall back to 3335 * the default {@link AccessibilityInjector}. 3336 * </p> 3337 * Note: If the user has not opted-in the accessibility script injection no scripts 3338 * are injected rather the default {@link AccessibilityInjector} implementation 3339 * is used. 3340 * 3341 * @param url The URL loaded by this {@link WebView}. 3342 */ 3343 private void injectAccessibilityForUrl(String url) { 3344 if (mWebViewCore == null) { 3345 return; 3346 } 3347 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3348 3349 if (!accessibilityManager.isEnabled()) { 3350 // it is possible that accessibility was turned off between reloads 3351 ensureAccessibilityScriptInjectorInstance(false); 3352 return; 3353 } 3354 3355 if (!getSettings().getJavaScriptEnabled()) { 3356 // no JS so we fallback to the basic buil-in support 3357 ensureAccessibilityScriptInjectorInstance(true); 3358 return; 3359 } 3360 3361 // check the URL "axs" parameter to choose appropriate action 3362 int axsParameterValue = getAxsUrlParameterValue(url); 3363 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3364 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3365 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3366 if (onDeviceScriptInjectionEnabled) { 3367 ensureAccessibilityScriptInjectorInstance(false); 3368 // neither script injected nor script injection opted out => we inject 3369 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3370 // TODO: Set this flag after successfull script injection. Maybe upon injection 3371 // the chooser should update the meta tag and we check it to declare success 3372 mAccessibilityScriptInjected = true; 3373 } else { 3374 // injection disabled so we fallback to the basic built-in support 3375 ensureAccessibilityScriptInjectorInstance(true); 3376 } 3377 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3378 // injection opted out so we fallback to the basic buil-in support 3379 ensureAccessibilityScriptInjectorInstance(true); 3380 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3381 ensureAccessibilityScriptInjectorInstance(false); 3382 // the URL provides accessibility but we still need to add our generic script 3383 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3384 } else { 3385 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3386 } 3387 } 3388 3389 /** 3390 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3391 * 3392 * @param present True to ensure an insance, false to ensure no instance. 3393 */ 3394 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3395 if (present) { 3396 if (mAccessibilityInjector == null) { 3397 mAccessibilityInjector = new AccessibilityInjector(this); 3398 } 3399 } else { 3400 mAccessibilityInjector = null; 3401 } 3402 } 3403 3404 /** 3405 * Gets the "axs" URL parameter value. 3406 * 3407 * @param url A url to fetch the paramter from. 3408 * @return The parameter value if such, -1 otherwise. 3409 */ 3410 private int getAxsUrlParameterValue(String url) { 3411 if (mMatchAxsUrlParameterPattern == null) { 3412 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3413 } 3414 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3415 if (matcher.find()) { 3416 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3417 return Integer.parseInt(keyValuePair.split("=")[1]); 3418 } 3419 return -1; 3420 } 3421 3422 /** 3423 * The URL of a page that sent a message to scroll the title bar off screen. 3424 * 3425 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3426 * title bar off the screen. Sometimes, the scroll position is set before 3427 * the page finishes loading. Rather than scrolling while the page is still 3428 * loading, keep track of the URL and new scroll position so we can perform 3429 * the scroll once the page finishes loading. 3430 */ 3431 private String mPageThatNeedsToSlideTitleBarOffScreen; 3432 3433 /** 3434 * The destination Y scroll position to be used when the page finishes 3435 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3436 */ 3437 private int mYDistanceToSlideTitleOffScreen; 3438 3439 // scale from content to view coordinates, and pin 3440 // return true if pin caused the final x/y different than the request cx/cy, 3441 // and a future scroll may reach the request cx/cy after our size has 3442 // changed 3443 // return false if the view scroll to the exact position as it is requested, 3444 // where negative numbers are taken to mean 0 3445 private boolean setContentScrollTo(int cx, int cy) { 3446 if (mDrawHistory) { 3447 // disallow WebView to change the scroll position as History Picture 3448 // is used in the view system. 3449 // One known case where this is called is that WebCore tries to 3450 // restore the scroll position. As history Picture already uses the 3451 // saved scroll position, it is ok to skip this. 3452 return false; 3453 } 3454 int vx; 3455 int vy; 3456 if ((cx | cy) == 0) { 3457 // If the page is being scrolled to (0,0), do not add in the title 3458 // bar's height, and simply scroll to (0,0). (The only other work 3459 // in contentToView_ is to multiply, so this would not change 0.) 3460 vx = 0; 3461 vy = 0; 3462 } else { 3463 vx = contentToViewX(cx); 3464 vy = contentToViewY(cy); 3465 } 3466// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3467// vx + " " + vy + "]"); 3468 // Some mobile sites attempt to scroll the title bar off the page by 3469 // scrolling to (0,1). If we are at the top left corner of the 3470 // page, assume this is an attempt to scroll off the title bar, and 3471 // animate the title bar off screen slowly enough that the user can see 3472 // it. 3473 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3474 && mTitleBar != null) { 3475 // FIXME: 100 should be defined somewhere as our max progress. 3476 if (getProgress() < 100) { 3477 // Wait to scroll the title bar off screen until the page has 3478 // finished loading. Keep track of the URL and the destination 3479 // Y position 3480 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3481 mYDistanceToSlideTitleOffScreen = vy; 3482 } else { 3483 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3484 } 3485 // Since we are animating, we have not yet reached the desired 3486 // scroll position. Do not return true to request another attempt 3487 return false; 3488 } 3489 pinScrollTo(vx, vy, false, 0); 3490 // If the request was to scroll to a negative coordinate, treat it as if 3491 // it was a request to scroll to 0 3492 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3493 return true; 3494 } else { 3495 return false; 3496 } 3497 } 3498 3499 // scale from content to view coordinates, and pin 3500 private void spawnContentScrollTo(int cx, int cy) { 3501 if (mDrawHistory) { 3502 // disallow WebView to change the scroll position as History Picture 3503 // is used in the view system. 3504 return; 3505 } 3506 int vx = contentToViewX(cx); 3507 int vy = contentToViewY(cy); 3508 pinScrollTo(vx, vy, true, 0); 3509 } 3510 3511 /** 3512 * These are from webkit, and are in content coordinate system (unzoomed) 3513 */ 3514 private void contentSizeChanged(boolean updateLayout) { 3515 // suppress 0,0 since we usually see real dimensions soon after 3516 // this avoids drawing the prev content in a funny place. If we find a 3517 // way to consolidate these notifications, this check may become 3518 // obsolete 3519 if ((mContentWidth | mContentHeight) == 0) { 3520 return; 3521 } 3522 3523 if (mHeightCanMeasure) { 3524 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3525 || updateLayout) { 3526 requestLayout(); 3527 } 3528 } else if (mWidthCanMeasure) { 3529 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3530 || updateLayout) { 3531 requestLayout(); 3532 } 3533 } else { 3534 // If we don't request a layout, try to send our view size to the 3535 // native side to ensure that WebCore has the correct dimensions. 3536 sendViewSizeZoom(false); 3537 } 3538 } 3539 3540 /** 3541 * Set the WebViewClient that will receive various notifications and 3542 * requests. This will replace the current handler. 3543 * @param client An implementation of WebViewClient. 3544 */ 3545 public void setWebViewClient(WebViewClient client) { 3546 mCallbackProxy.setWebViewClient(client); 3547 } 3548 3549 /** 3550 * Gets the WebViewClient 3551 * @return the current WebViewClient instance. 3552 * 3553 *@hide pending API council approval. 3554 */ 3555 public WebViewClient getWebViewClient() { 3556 return mCallbackProxy.getWebViewClient(); 3557 } 3558 3559 /** 3560 * Register the interface to be used when content can not be handled by 3561 * the rendering engine, and should be downloaded instead. This will replace 3562 * the current handler. 3563 * @param listener An implementation of DownloadListener. 3564 */ 3565 public void setDownloadListener(DownloadListener listener) { 3566 mCallbackProxy.setDownloadListener(listener); 3567 } 3568 3569 /** 3570 * Set the chrome handler. This is an implementation of WebChromeClient for 3571 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3572 * This will replace the current handler. 3573 * @param client An implementation of WebChromeClient. 3574 */ 3575 public void setWebChromeClient(WebChromeClient client) { 3576 mCallbackProxy.setWebChromeClient(client); 3577 } 3578 3579 /** 3580 * Gets the chrome handler. 3581 * @return the current WebChromeClient instance. 3582 * 3583 * @hide API council approval. 3584 */ 3585 public WebChromeClient getWebChromeClient() { 3586 return mCallbackProxy.getWebChromeClient(); 3587 } 3588 3589 /** 3590 * Set the back/forward list client. This is an implementation of 3591 * WebBackForwardListClient for handling new items and changes in the 3592 * history index. 3593 * @param client An implementation of WebBackForwardListClient. 3594 * {@hide} 3595 */ 3596 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3597 mCallbackProxy.setWebBackForwardListClient(client); 3598 } 3599 3600 /** 3601 * Gets the WebBackForwardListClient. 3602 * {@hide} 3603 */ 3604 public WebBackForwardListClient getWebBackForwardListClient() { 3605 return mCallbackProxy.getWebBackForwardListClient(); 3606 } 3607 3608 /** 3609 * Set the Picture listener. This is an interface used to receive 3610 * notifications of a new Picture. 3611 * @param listener An implementation of WebView.PictureListener. 3612 */ 3613 public void setPictureListener(PictureListener listener) { 3614 mPictureListener = listener; 3615 } 3616 3617 /** 3618 * {@hide} 3619 */ 3620 /* FIXME: Debug only! Remove for SDK! */ 3621 public void externalRepresentation(Message callback) { 3622 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3623 } 3624 3625 /** 3626 * {@hide} 3627 */ 3628 /* FIXME: Debug only! Remove for SDK! */ 3629 public void documentAsText(Message callback) { 3630 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3631 } 3632 3633 /** 3634 * Use this function to bind an object to JavaScript so that the 3635 * methods can be accessed from JavaScript. 3636 * <p><strong>IMPORTANT:</strong> 3637 * <ul> 3638 * <li> Using addJavascriptInterface() allows JavaScript to control your 3639 * application. This can be a very useful feature or a dangerous security 3640 * issue. When the HTML in the WebView is untrustworthy (for example, part 3641 * or all of the HTML is provided by some person or process), then an 3642 * attacker could inject HTML that will execute your code and possibly any 3643 * code of the attacker's choosing.<br> 3644 * Do not use addJavascriptInterface() unless all of the HTML in this 3645 * WebView was written by you.</li> 3646 * <li> The Java object that is bound runs in another thread and not in 3647 * the thread that it was constructed in.</li> 3648 * </ul></p> 3649 * @param obj The class instance to bind to JavaScript, null instances are 3650 * ignored. 3651 * @param interfaceName The name to used to expose the instance in 3652 * JavaScript. 3653 */ 3654 public void addJavascriptInterface(Object obj, String interfaceName) { 3655 if (obj == null) { 3656 return; 3657 } 3658 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3659 arg.mObject = obj; 3660 arg.mInterfaceName = interfaceName; 3661 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3662 } 3663 3664 /** 3665 * Removes a previously added JavaScript interface with the given name. 3666 * @param interfaceName The name of the interface to remove. 3667 */ 3668 public void removeJavascriptInterface(String interfaceName) { 3669 if (mWebViewCore != null) { 3670 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3671 arg.mInterfaceName = interfaceName; 3672 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3673 } 3674 } 3675 3676 /** 3677 * Return the WebSettings object used to control the settings for this 3678 * WebView. 3679 * @return A WebSettings object that can be used to control this WebView's 3680 * settings. 3681 */ 3682 public WebSettings getSettings() { 3683 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3684 } 3685 3686 /** 3687 * Return the list of currently loaded plugins. 3688 * @return The list of currently loaded plugins. 3689 * 3690 * @hide 3691 * @deprecated This was used for Gears, which has been deprecated. 3692 */ 3693 @Deprecated 3694 public static synchronized PluginList getPluginList() { 3695 return new PluginList(); 3696 } 3697 3698 /** 3699 * @hide 3700 * @deprecated This was used for Gears, which has been deprecated. 3701 */ 3702 @Deprecated 3703 public void refreshPlugins(boolean reloadOpenPages) { } 3704 3705 //------------------------------------------------------------------------- 3706 // Override View methods 3707 //------------------------------------------------------------------------- 3708 3709 @Override 3710 protected void finalize() throws Throwable { 3711 try { 3712 destroy(); 3713 } finally { 3714 super.finalize(); 3715 } 3716 } 3717 3718 @Override 3719 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3720 if (child == mTitleBar) { 3721 // When drawing the title bar, move it horizontally to always show 3722 // at the top of the WebView. 3723 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3724 int newTop = 0; 3725 if (mTitleGravity == Gravity.NO_GRAVITY) { 3726 newTop = Math.min(0, mScrollY); 3727 } else if (mTitleGravity == Gravity.TOP) { 3728 newTop = mScrollY; 3729 } 3730 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 3731 mTitleBar.setTop(newTop); 3732 } 3733 return super.drawChild(canvas, child, drawingTime); 3734 } 3735 3736 private void drawContent(Canvas canvas) { 3737 // Update the buttons in the picture, so when we draw the picture 3738 // to the screen, they are in the correct state. 3739 // Tell the native side if user is a) touching the screen, 3740 // b) pressing the trackball down, or c) pressing the enter key 3741 // If the cursor is on a button, we need to draw it in the pressed 3742 // state. 3743 // If mNativeClass is 0, we should not reach here, so we do not 3744 // need to check it again. 3745 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3746 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3747 || mTrackballDown || mGotCenterDown, false); 3748 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3749 } 3750 3751 /** 3752 * Draw the background when beyond bounds 3753 * @param canvas Canvas to draw into 3754 */ 3755 private void drawOverScrollBackground(Canvas canvas) { 3756 if (mOverScrollBackground == null) { 3757 mOverScrollBackground = new Paint(); 3758 Bitmap bm = BitmapFactory.decodeResource( 3759 mContext.getResources(), 3760 com.android.internal.R.drawable.status_bar_background); 3761 mOverScrollBackground.setShader(new BitmapShader(bm, 3762 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3763 mOverScrollBorder = new Paint(); 3764 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3765 mOverScrollBorder.setStrokeWidth(0); 3766 mOverScrollBorder.setColor(0xffbbbbbb); 3767 } 3768 3769 int top = 0; 3770 int right = computeRealHorizontalScrollRange(); 3771 int bottom = top + computeRealVerticalScrollRange(); 3772 // first draw the background and anchor to the top of the view 3773 canvas.save(); 3774 canvas.translate(mScrollX, mScrollY); 3775 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3776 - mScrollY, Region.Op.DIFFERENCE); 3777 canvas.drawPaint(mOverScrollBackground); 3778 canvas.restore(); 3779 // then draw the border 3780 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3781 // next clip the region for the content 3782 canvas.clipRect(0, top, right, bottom); 3783 } 3784 3785 @Override 3786 protected void onDraw(Canvas canvas) { 3787 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3788 if (mNativeClass == 0) { 3789 return; 3790 } 3791 3792 // if both mContentWidth and mContentHeight are 0, it means there is no 3793 // valid Picture passed to WebView yet. This can happen when WebView 3794 // just starts. Draw the background and return. 3795 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3796 canvas.drawColor(mBackgroundColor); 3797 return; 3798 } 3799 3800 if (canvas.isHardwareAccelerated()) { 3801 mZoomManager.setHardwareAccelerated(); 3802 } 3803 3804 int saveCount = canvas.save(); 3805 if (mInOverScrollMode && !getSettings() 3806 .getUseWebViewBackgroundForOverscrollBackground()) { 3807 drawOverScrollBackground(canvas); 3808 } 3809 if (mTitleBar != null) { 3810 canvas.translate(0, getTitleHeight()); 3811 } 3812 drawContent(canvas); 3813 canvas.restoreToCount(saveCount); 3814 3815 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3816 invalidate(); 3817 } 3818 if (inEditingMode()) { 3819 mWebTextView.onDrawSubstitute(); 3820 } 3821 mWebViewCore.signalRepaintDone(); 3822 3823 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3824 invalidate(); 3825 } 3826 3827 // paint the highlight in the end 3828 if (!mTouchHighlightRegion.isEmpty()) { 3829 if (mTouchHightlightPaint == null) { 3830 mTouchHightlightPaint = new Paint(); 3831 mTouchHightlightPaint.setColor(mHightlightColor); 3832 mTouchHightlightPaint.setAntiAlias(true); 3833 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3834 TOUCH_HIGHLIGHT_ARC)); 3835 } 3836 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3837 mTouchHightlightPaint); 3838 } 3839 if (DEBUG_TOUCH_HIGHLIGHT) { 3840 if (getSettings().getNavDump()) { 3841 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3842 if (mTouchCrossHairColor == null) { 3843 mTouchCrossHairColor = new Paint(); 3844 mTouchCrossHairColor.setColor(Color.RED); 3845 } 3846 canvas.drawLine(mTouchHighlightX - mNavSlop, 3847 mTouchHighlightY - mNavSlop, mTouchHighlightX 3848 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3849 + 1, mTouchCrossHairColor); 3850 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3851 mTouchHighlightY - mNavSlop, mTouchHighlightX 3852 - mNavSlop, 3853 mTouchHighlightY + mNavSlop + 1, 3854 mTouchCrossHairColor); 3855 } 3856 } 3857 } 3858 } 3859 3860 private void removeTouchHighlight(boolean removePendingMessage) { 3861 if (removePendingMessage) { 3862 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3863 } 3864 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3865 } 3866 3867 @Override 3868 public void setLayoutParams(ViewGroup.LayoutParams params) { 3869 if (params.height == LayoutParams.WRAP_CONTENT) { 3870 mWrapContent = true; 3871 } 3872 super.setLayoutParams(params); 3873 } 3874 3875 @Override 3876 public boolean performLongClick() { 3877 // performLongClick() is the result of a delayed message. If we switch 3878 // to windows overview, the WebView will be temporarily removed from the 3879 // view system. In that case, do nothing. 3880 if (getParent() == null) return false; 3881 3882 // A multi-finger gesture can look like a long press; make sure we don't take 3883 // long press actions if we're scaling. 3884 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3885 if (detector != null && detector.isInProgress()) { 3886 return false; 3887 } 3888 3889 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3890 // Send the click so that the textfield is in focus 3891 centerKeyPressOnTextField(); 3892 rebuildWebTextView(); 3893 } else { 3894 clearTextEntry(); 3895 } 3896 if (inEditingMode()) { 3897 // Since we just called rebuildWebTextView, the layout is not set 3898 // properly. Update it so it can correctly find the word to select. 3899 mWebTextView.ensureLayout(); 3900 // Provide a touch down event to WebTextView, which will allow it 3901 // to store the location to use in performLongClick. 3902 AbsoluteLayout.LayoutParams params 3903 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 3904 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 3905 mLastTouchTime, MotionEvent.ACTION_DOWN, 3906 mLastTouchX - params.x + mScrollX, 3907 mLastTouchY - params.y + mScrollY, 0); 3908 mWebTextView.dispatchTouchEvent(fake); 3909 return mWebTextView.performLongClick(); 3910 } 3911 if (mSelectingText) return false; // long click does nothing on selection 3912 /* if long click brings up a context menu, the super function 3913 * returns true and we're done. Otherwise, nothing happened when 3914 * the user clicked. */ 3915 if (super.performLongClick()) { 3916 return true; 3917 } 3918 /* In the case where the application hasn't already handled the long 3919 * click action, look for a word under the click. If one is found, 3920 * animate the text selection into view. 3921 * FIXME: no animation code yet */ 3922 return selectText(); 3923 } 3924 3925 /** 3926 * Select the word at the last click point. 3927 * 3928 * @hide pending API council approval 3929 */ 3930 public boolean selectText() { 3931 int x = viewToContentX(mLastTouchX + mScrollX); 3932 int y = viewToContentY(mLastTouchY + mScrollY); 3933 return selectText(x, y); 3934 } 3935 3936 /** 3937 * Select the word at the indicated content coordinates. 3938 */ 3939 boolean selectText(int x, int y) { 3940 if (!setUpSelect(true, x, y)) { 3941 return false; 3942 } 3943 nativeSetExtendSelection(); 3944 mDrawSelectionPointer = false; 3945 mSelectionStarted = true; 3946 mTouchMode = TOUCH_DRAG_MODE; 3947 return true; 3948 } 3949 3950 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3951 3952 @Override 3953 protected void onConfigurationChanged(Configuration newConfig) { 3954 if (mSelectingText && mOrientation != newConfig.orientation) { 3955 selectionDone(); 3956 } 3957 mOrientation = newConfig.orientation; 3958 } 3959 3960 /** 3961 * Keep track of the Callback so we can end its ActionMode or remove its 3962 * titlebar. 3963 */ 3964 private SelectActionModeCallback mSelectCallback; 3965 3966 // These values are possible options for didUpdateWebTextViewDimensions. 3967 private static final int FULLY_ON_SCREEN = 0; 3968 private static final int INTERSECTS_SCREEN = 1; 3969 private static final int ANYWHERE = 2; 3970 3971 /** 3972 * Check to see if the focused textfield/textarea is still on screen. If it 3973 * is, update the the dimensions and location of WebTextView. Otherwise, 3974 * remove the WebTextView. Should be called when the zoom level changes. 3975 * @param intersection How to determine whether the textfield/textarea is 3976 * still on screen. 3977 * @return boolean True if the textfield/textarea is still on screen and the 3978 * dimensions/location of WebTextView have been updated. 3979 */ 3980 private boolean didUpdateWebTextViewDimensions(int intersection) { 3981 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3982 Rect vBox = contentToViewRect(contentBounds); 3983 Rect visibleRect = new Rect(); 3984 calcOurVisibleRect(visibleRect); 3985 // If the textfield is on screen, place the WebTextView in 3986 // its new place, accounting for our new scroll/zoom values, 3987 // and adjust its textsize. 3988 boolean onScreen; 3989 switch (intersection) { 3990 case FULLY_ON_SCREEN: 3991 onScreen = visibleRect.contains(vBox); 3992 break; 3993 case INTERSECTS_SCREEN: 3994 onScreen = Rect.intersects(visibleRect, vBox); 3995 break; 3996 case ANYWHERE: 3997 onScreen = true; 3998 break; 3999 default: 4000 throw new AssertionError( 4001 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4002 } 4003 if (onScreen) { 4004 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4005 vBox.height()); 4006 mWebTextView.updateTextSize(); 4007 updateWebTextViewPadding(); 4008 return true; 4009 } else { 4010 // The textfield is now off screen. The user probably 4011 // was not zooming to see the textfield better. Remove 4012 // the WebTextView. If the user types a key, and the 4013 // textfield is still in focus, we will reconstruct 4014 // the WebTextView and scroll it back on screen. 4015 mWebTextView.remove(); 4016 return false; 4017 } 4018 } 4019 4020 void setBaseLayer(int layer, Rect invalRect, boolean showVisualIndciator) { 4021 if (mNativeClass == 0) 4022 return; 4023 if (invalRect == null) { 4024 Rect rect = new Rect(0, 0, mContentWidth, mContentHeight); 4025 nativeSetBaseLayer(layer, rect, showVisualIndciator); 4026 } else { 4027 nativeSetBaseLayer(layer, invalRect, showVisualIndciator); 4028 } 4029 } 4030 4031 private void onZoomAnimationStart() { 4032 // If it is in password mode, turn it off so it does not draw misplaced. 4033 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4034 mWebTextView.setInPassword(false); 4035 } 4036 } 4037 4038 private void onZoomAnimationEnd() { 4039 // adjust the edit text view if needed 4040 if (inEditingMode() && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN) 4041 && nativeFocusCandidateIsPassword()) { 4042 // If it is a password field, start drawing the WebTextView once 4043 // again. 4044 mWebTextView.setInPassword(true); 4045 } 4046 } 4047 4048 void onFixedLengthZoomAnimationStart() { 4049 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4050 onZoomAnimationStart(); 4051 } 4052 4053 void onFixedLengthZoomAnimationEnd() { 4054 if (!mSelectingText) { 4055 WebViewCore.resumeUpdatePicture(mWebViewCore); 4056 } 4057 onZoomAnimationEnd(); 4058 } 4059 4060 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4061 Paint.DITHER_FLAG | 4062 Paint.SUBPIXEL_TEXT_FLAG; 4063 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4064 Paint.DITHER_FLAG; 4065 4066 private final DrawFilter mZoomFilter = 4067 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4068 // If we need to trade better quality for speed, set mScrollFilter to null 4069 private final DrawFilter mScrollFilter = 4070 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4071 4072 private void drawCoreAndCursorRing(Canvas canvas, int color, 4073 boolean drawCursorRing) { 4074 if (mDrawHistory) { 4075 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4076 canvas.drawPicture(mHistoryPicture); 4077 return; 4078 } 4079 if (mNativeClass == 0) return; 4080 4081 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4082 boolean animateScroll = ((!mScroller.isFinished() 4083 || mVelocityTracker != null) 4084 && (mTouchMode != TOUCH_DRAG_MODE || 4085 mHeldMotionless != MOTIONLESS_TRUE)) 4086 || mDeferTouchMode == TOUCH_DRAG_MODE; 4087 if (mTouchMode == TOUCH_DRAG_MODE) { 4088 if (mHeldMotionless == MOTIONLESS_PENDING) { 4089 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4090 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4091 mHeldMotionless = MOTIONLESS_FALSE; 4092 } 4093 if (mHeldMotionless == MOTIONLESS_FALSE) { 4094 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4095 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4096 mHeldMotionless = MOTIONLESS_PENDING; 4097 } 4098 } 4099 if (animateZoom) { 4100 mZoomManager.animateZoom(canvas); 4101 } else { 4102 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4103 } 4104 4105 boolean UIAnimationsRunning = false; 4106 // Currently for each draw we compute the animation values; 4107 // We may in the future decide to do that independently. 4108 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4109 UIAnimationsRunning = true; 4110 // If we have unfinished (or unstarted) animations, 4111 // we ask for a repaint. 4112 invalidate(); 4113 } 4114 4115 // decide which adornments to draw 4116 int extras = DRAW_EXTRAS_NONE; 4117 if (mFindIsUp) { 4118 extras = DRAW_EXTRAS_FIND; 4119 } else if (mSelectingText) { 4120 extras = DRAW_EXTRAS_SELECTION; 4121 nativeSetSelectionPointer(mDrawSelectionPointer, 4122 mZoomManager.getInvScale(), 4123 mSelectX, mSelectY - getTitleHeight()); 4124 } else if (drawCursorRing) { 4125 extras = DRAW_EXTRAS_CURSOR_RING; 4126 } 4127 if (DebugFlags.WEB_VIEW) { 4128 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4129 + " mSelectingText=" + mSelectingText 4130 + " nativePageShouldHandleShiftAndArrows()=" 4131 + nativePageShouldHandleShiftAndArrows() 4132 + " animateZoom=" + animateZoom 4133 + " extras=" + extras); 4134 } 4135 4136 if (canvas.isHardwareAccelerated()) { 4137 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4138 getScale(), extras); 4139 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4140 } else { 4141 DrawFilter df = null; 4142 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4143 df = mZoomFilter; 4144 } else if (animateScroll) { 4145 df = mScrollFilter; 4146 } 4147 canvas.setDrawFilter(df); 4148 // XXX: Revisit splitting content. Right now it causes a 4149 // synchronization problem with layers. 4150 int content = nativeDraw(canvas, color, extras, false); 4151 canvas.setDrawFilter(null); 4152 if (content != 0) { 4153 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4154 } 4155 } 4156 4157 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4158 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4159 mTouchMode = TOUCH_SHORTPRESS_MODE; 4160 } 4161 } 4162 if (mFocusSizeChanged) { 4163 mFocusSizeChanged = false; 4164 // If we are zooming, this will get handled above, when the zoom 4165 // finishes. We also do not need to do this unless the WebTextView 4166 // is showing. 4167 if (!animateZoom && inEditingMode()) { 4168 didUpdateWebTextViewDimensions(ANYWHERE); 4169 } 4170 } 4171 } 4172 4173 // draw history 4174 private boolean mDrawHistory = false; 4175 private Picture mHistoryPicture = null; 4176 private int mHistoryWidth = 0; 4177 private int mHistoryHeight = 0; 4178 4179 // Only check the flag, can be called from WebCore thread 4180 boolean drawHistory() { 4181 return mDrawHistory; 4182 } 4183 4184 int getHistoryPictureWidth() { 4185 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4186 } 4187 4188 // Should only be called in UI thread 4189 void switchOutDrawHistory() { 4190 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4191 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4192 mDrawHistory = false; 4193 mHistoryPicture = null; 4194 invalidate(); 4195 int oldScrollX = mScrollX; 4196 int oldScrollY = mScrollY; 4197 mScrollX = pinLocX(mScrollX); 4198 mScrollY = pinLocY(mScrollY); 4199 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4200 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4201 } else { 4202 sendOurVisibleRect(); 4203 } 4204 } 4205 } 4206 4207 WebViewCore.CursorData cursorData() { 4208 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4209 result.mMoveGeneration = nativeMoveGeneration(); 4210 result.mFrame = nativeCursorFramePointer(); 4211 Point position = nativeCursorPosition(); 4212 result.mX = position.x; 4213 result.mY = position.y; 4214 return result; 4215 } 4216 4217 /** 4218 * Delete text from start to end in the focused textfield. If there is no 4219 * focus, or if start == end, silently fail. If start and end are out of 4220 * order, swap them. 4221 * @param start Beginning of selection to delete. 4222 * @param end End of selection to delete. 4223 */ 4224 /* package */ void deleteSelection(int start, int end) { 4225 mTextGeneration++; 4226 WebViewCore.TextSelectionData data 4227 = new WebViewCore.TextSelectionData(start, end); 4228 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4229 data); 4230 } 4231 4232 /** 4233 * Set the selection to (start, end) in the focused textfield. If start and 4234 * end are out of order, swap them. 4235 * @param start Beginning of selection. 4236 * @param end End of selection. 4237 */ 4238 /* package */ void setSelection(int start, int end) { 4239 if (mWebViewCore != null) { 4240 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4241 } 4242 } 4243 4244 @Override 4245 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4246 InputConnection connection = super.onCreateInputConnection(outAttrs); 4247 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4248 return connection; 4249 } 4250 4251 /** 4252 * Called in response to a message from webkit telling us that the soft 4253 * keyboard should be launched. 4254 */ 4255 private void displaySoftKeyboard(boolean isTextView) { 4256 InputMethodManager imm = (InputMethodManager) 4257 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4258 4259 // bring it back to the default level scale so that user can enter text 4260 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4261 if (zoom) { 4262 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4263 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4264 } 4265 if (isTextView) { 4266 rebuildWebTextView(); 4267 if (inEditingMode()) { 4268 imm.showSoftInput(mWebTextView, 0); 4269 if (zoom) { 4270 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4271 } 4272 return; 4273 } 4274 } 4275 // Used by plugins and contentEditable. 4276 // Also used if the navigation cache is out of date, and 4277 // does not recognize that a textfield is in focus. In that 4278 // case, use WebView as the targeted view. 4279 // see http://b/issue?id=2457459 4280 imm.showSoftInput(this, 0); 4281 } 4282 4283 // Called by WebKit to instruct the UI to hide the keyboard 4284 private void hideSoftKeyboard() { 4285 InputMethodManager imm = InputMethodManager.peekInstance(); 4286 if (imm != null && (imm.isActive(this) 4287 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4288 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4289 } 4290 } 4291 4292 /* 4293 * This method checks the current focus and cursor and potentially rebuilds 4294 * mWebTextView to have the appropriate properties, such as password, 4295 * multiline, and what text it contains. It also removes it if necessary. 4296 */ 4297 /* package */ void rebuildWebTextView() { 4298 // If the WebView does not have focus, do nothing until it gains focus. 4299 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4300 return; 4301 } 4302 boolean alreadyThere = inEditingMode(); 4303 // inEditingMode can only return true if mWebTextView is non-null, 4304 // so we can safely call remove() if (alreadyThere) 4305 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4306 if (alreadyThere) { 4307 mWebTextView.remove(); 4308 } 4309 return; 4310 } 4311 // At this point, we know we have found an input field, so go ahead 4312 // and create the WebTextView if necessary. 4313 if (mWebTextView == null) { 4314 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4315 // Initialize our generation number. 4316 mTextGeneration = 0; 4317 } 4318 mWebTextView.updateTextSize(); 4319 Rect visibleRect = new Rect(); 4320 calcOurContentVisibleRect(visibleRect); 4321 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4322 // should be in content coordinates. 4323 Rect bounds = nativeFocusCandidateNodeBounds(); 4324 Rect vBox = contentToViewRect(bounds); 4325 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4326 if (!Rect.intersects(bounds, visibleRect)) { 4327 revealSelection(); 4328 } 4329 String text = nativeFocusCandidateText(); 4330 int nodePointer = nativeFocusCandidatePointer(); 4331 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4332 // It is possible that we have the same textfield, but it has moved, 4333 // i.e. In the case of opening/closing the screen. 4334 // In that case, we need to set the dimensions, but not the other 4335 // aspects. 4336 // If the text has been changed by webkit, update it. However, if 4337 // there has been more UI text input, ignore it. We will receive 4338 // another update when that text is recognized. 4339 if (text != null && !text.equals(mWebTextView.getText().toString()) 4340 && nativeTextGeneration() == mTextGeneration) { 4341 mWebTextView.setTextAndKeepSelection(text); 4342 } 4343 } else { 4344 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4345 Gravity.RIGHT : Gravity.NO_GRAVITY); 4346 // This needs to be called before setType, which may call 4347 // requestFormData, and it needs to have the correct nodePointer. 4348 mWebTextView.setNodePointer(nodePointer); 4349 mWebTextView.setType(nativeFocusCandidateType()); 4350 updateWebTextViewPadding(); 4351 if (null == text) { 4352 if (DebugFlags.WEB_VIEW) { 4353 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4354 } 4355 text = ""; 4356 } 4357 mWebTextView.setTextAndKeepSelection(text); 4358 InputMethodManager imm = InputMethodManager.peekInstance(); 4359 if (imm != null && imm.isActive(mWebTextView)) { 4360 imm.restartInput(mWebTextView); 4361 } 4362 } 4363 if (isFocused()) { 4364 mWebTextView.requestFocus(); 4365 } 4366 } 4367 4368 /** 4369 * Update the padding of mWebTextView based on the native textfield/textarea 4370 */ 4371 void updateWebTextViewPadding() { 4372 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4373 if (paddingRect != null) { 4374 // Use contentToViewDimension since these are the dimensions of 4375 // the padding. 4376 mWebTextView.setPadding( 4377 contentToViewDimension(paddingRect.left), 4378 contentToViewDimension(paddingRect.top), 4379 contentToViewDimension(paddingRect.right), 4380 contentToViewDimension(paddingRect.bottom)); 4381 } 4382 } 4383 4384 /** 4385 * Tell webkit to put the cursor on screen. 4386 */ 4387 /* package */ void revealSelection() { 4388 if (mWebViewCore != null) { 4389 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4390 } 4391 } 4392 4393 /** 4394 * Called by WebTextView to find saved form data associated with the 4395 * textfield 4396 * @param name Name of the textfield. 4397 * @param nodePointer Pointer to the node of the textfield, so it can be 4398 * compared to the currently focused textfield when the data is 4399 * retrieved. 4400 * @param autoFillable true if WebKit has determined this field is part of 4401 * a form that can be auto filled. 4402 * @param autoComplete true if the attribute "autocomplete" is set to true 4403 * on the textfield. 4404 */ 4405 /* package */ void requestFormData(String name, int nodePointer, 4406 boolean autoFillable, boolean autoComplete) { 4407 if (mWebViewCore.getSettings().getSaveFormData()) { 4408 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4409 update.arg1 = nodePointer; 4410 RequestFormData updater = new RequestFormData(name, getUrl(), 4411 update, autoFillable, autoComplete); 4412 Thread t = new Thread(updater); 4413 t.start(); 4414 } 4415 } 4416 4417 /** 4418 * Pass a message to find out the <label> associated with the <input> 4419 * identified by nodePointer 4420 * @param framePointer Pointer to the frame containing the <input> node 4421 * @param nodePointer Pointer to the node for which a <label> is desired. 4422 */ 4423 /* package */ void requestLabel(int framePointer, int nodePointer) { 4424 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4425 nodePointer); 4426 } 4427 4428 /* 4429 * This class requests an Adapter for the WebTextView which shows past 4430 * entries stored in the database. It is a Runnable so that it can be done 4431 * in its own thread, without slowing down the UI. 4432 */ 4433 private class RequestFormData implements Runnable { 4434 private String mName; 4435 private String mUrl; 4436 private Message mUpdateMessage; 4437 private boolean mAutoFillable; 4438 private boolean mAutoComplete; 4439 4440 public RequestFormData(String name, String url, Message msg, 4441 boolean autoFillable, boolean autoComplete) { 4442 mName = name; 4443 mUrl = url; 4444 mUpdateMessage = msg; 4445 mAutoFillable = autoFillable; 4446 mAutoComplete = autoComplete; 4447 } 4448 4449 public void run() { 4450 ArrayList<String> pastEntries = new ArrayList<String>(); 4451 4452 if (mAutoFillable) { 4453 // Note that code inside the adapter click handler in WebTextView depends 4454 // on the AutoFill item being at the top of the drop down list. If you change 4455 // the order, make sure to do it there too! 4456 WebSettings settings = getSettings(); 4457 if (settings != null && settings.getAutoFillProfile() != null) { 4458 pastEntries.add(getResources().getText( 4459 com.android.internal.R.string.autofill_this_form).toString() + 4460 " " + 4461 mAutoFillData.getPreviewString()); 4462 mWebTextView.setAutoFillProfileIsSet(true); 4463 } else { 4464 // There is no autofill profile set up yet, so add an option that 4465 // will invite the user to set their profile up. 4466 pastEntries.add(getResources().getText( 4467 com.android.internal.R.string.setup_autofill).toString()); 4468 mWebTextView.setAutoFillProfileIsSet(false); 4469 } 4470 } 4471 4472 if (mAutoComplete) { 4473 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4474 } 4475 4476 if (pastEntries.size() > 0) { 4477 AutoCompleteAdapter adapter = new 4478 AutoCompleteAdapter(mContext, pastEntries); 4479 mUpdateMessage.obj = adapter; 4480 mUpdateMessage.sendToTarget(); 4481 } 4482 } 4483 } 4484 4485 /** 4486 * Dump the display tree to "/sdcard/displayTree.txt" 4487 * 4488 * @hide debug only 4489 */ 4490 public void dumpDisplayTree() { 4491 nativeDumpDisplayTree(getUrl()); 4492 } 4493 4494 /** 4495 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4496 * "/sdcard/domTree.txt" 4497 * 4498 * @hide debug only 4499 */ 4500 public void dumpDomTree(boolean toFile) { 4501 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4502 } 4503 4504 /** 4505 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4506 * to "/sdcard/renderTree.txt" 4507 * 4508 * @hide debug only 4509 */ 4510 public void dumpRenderTree(boolean toFile) { 4511 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4512 } 4513 4514 /** 4515 * Called by DRT on UI thread, need to proxy to WebCore thread. 4516 * 4517 * @hide debug only 4518 */ 4519 public void useMockDeviceOrientation() { 4520 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4521 } 4522 4523 /** 4524 * Called by DRT on WebCore thread. 4525 * 4526 * @hide debug only 4527 */ 4528 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4529 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4530 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4531 canProvideGamma, gamma); 4532 } 4533 4534 /** 4535 * Dump the V8 counters to standard output. 4536 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4537 * true. Otherwise, this will do nothing. 4538 * 4539 * @hide debug only 4540 */ 4541 public void dumpV8Counters() { 4542 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4543 } 4544 4545 // This is used to determine long press with the center key. Does not 4546 // affect long press with the trackball/touch. 4547 private boolean mGotCenterDown = false; 4548 4549 @Override 4550 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4551 // send complex characters to webkit for use by JS and plugins 4552 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4553 // pass the key to DOM 4554 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4555 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4556 // return true as DOM handles the key 4557 return true; 4558 } 4559 return false; 4560 } 4561 4562 private boolean isEnterActionKey(int keyCode) { 4563 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4564 || keyCode == KeyEvent.KEYCODE_ENTER 4565 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4566 } 4567 4568 @Override 4569 public boolean onKeyDown(int keyCode, KeyEvent event) { 4570 if (DebugFlags.WEB_VIEW) { 4571 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4572 + "keyCode=" + keyCode 4573 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4574 } 4575 4576 // don't implement accelerator keys here; defer to host application 4577 if (event.isCtrlPressed()) { 4578 return false; 4579 } 4580 4581 if (mNativeClass == 0) { 4582 return false; 4583 } 4584 4585 // do this hack up front, so it always works, regardless of touch-mode 4586 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4587 mAutoRedraw = !mAutoRedraw; 4588 if (mAutoRedraw) { 4589 invalidate(); 4590 } 4591 return true; 4592 } 4593 4594 // Bubble up the key event if 4595 // 1. it is a system key; or 4596 // 2. the host application wants to handle it; 4597 if (event.isSystem() 4598 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4599 return false; 4600 } 4601 4602 // accessibility support 4603 if (accessibilityScriptInjected()) { 4604 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4605 // if an accessibility script is injected we delegate to it the key handling. 4606 // this script is a screen reader which is a fully fledged solution for blind 4607 // users to navigate in and interact with web pages. 4608 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4609 return true; 4610 } else { 4611 // Clean up if accessibility was disabled after loading the current URL. 4612 mAccessibilityScriptInjected = false; 4613 } 4614 } else if (mAccessibilityInjector != null) { 4615 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4616 if (mAccessibilityInjector.onKeyEvent(event)) { 4617 // if an accessibility injector is present (no JavaScript enabled or the site 4618 // opts out injecting our JavaScript screen reader) we let it decide whether 4619 // to act on and consume the event. 4620 return true; 4621 } 4622 } else { 4623 // Clean up if accessibility was disabled after loading the current URL. 4624 mAccessibilityInjector = null; 4625 } 4626 } 4627 4628 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4629 if (event.hasNoModifiers()) { 4630 pageUp(false); 4631 return true; 4632 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4633 pageUp(true); 4634 return true; 4635 } 4636 } 4637 4638 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4639 if (event.hasNoModifiers()) { 4640 pageDown(false); 4641 return true; 4642 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4643 pageDown(true); 4644 return true; 4645 } 4646 } 4647 4648 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4649 pageUp(true); 4650 return true; 4651 } 4652 4653 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4654 pageDown(true); 4655 return true; 4656 } 4657 4658 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4659 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4660 switchOutDrawHistory(); 4661 if (nativePageShouldHandleShiftAndArrows()) { 4662 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4663 return true; 4664 } 4665 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4666 switch (keyCode) { 4667 case KeyEvent.KEYCODE_DPAD_UP: 4668 pageUp(true); 4669 return true; 4670 case KeyEvent.KEYCODE_DPAD_DOWN: 4671 pageDown(true); 4672 return true; 4673 case KeyEvent.KEYCODE_DPAD_LEFT: 4674 nativeClearCursor(); // start next trackball movement from page edge 4675 return pinScrollTo(0, mScrollY, true, 0); 4676 case KeyEvent.KEYCODE_DPAD_RIGHT: 4677 nativeClearCursor(); // start next trackball movement from page edge 4678 return pinScrollTo(mContentWidth, mScrollY, true, 0); 4679 } 4680 } 4681 if (mSelectingText) { 4682 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4683 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4684 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4685 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4686 int multiplier = event.getRepeatCount() + 1; 4687 moveSelection(xRate * multiplier, yRate * multiplier); 4688 return true; 4689 } 4690 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4691 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4692 return true; 4693 } 4694 // Bubble up the key event as WebView doesn't handle it 4695 return false; 4696 } 4697 4698 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4699 switchOutDrawHistory(); 4700 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 4701 || nativeCursorWantsKeyEvents(); 4702 if (event.getRepeatCount() == 0) { 4703 if (mSelectingText) { 4704 return true; // discard press if copy in progress 4705 } 4706 mGotCenterDown = true; 4707 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4708 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4709 // Already checked mNativeClass, so we do not need to check it 4710 // again. 4711 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4712 if (!wantsKeyEvents) return true; 4713 } 4714 // Bubble up the key event as WebView doesn't handle it 4715 if (!wantsKeyEvents) return false; 4716 } 4717 4718 if (getSettings().getNavDump()) { 4719 switch (keyCode) { 4720 case KeyEvent.KEYCODE_4: 4721 dumpDisplayTree(); 4722 break; 4723 case KeyEvent.KEYCODE_5: 4724 case KeyEvent.KEYCODE_6: 4725 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4726 break; 4727 case KeyEvent.KEYCODE_7: 4728 case KeyEvent.KEYCODE_8: 4729 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4730 break; 4731 case KeyEvent.KEYCODE_9: 4732 nativeInstrumentReport(); 4733 return true; 4734 } 4735 } 4736 4737 if (nativeCursorIsTextInput()) { 4738 // This message will put the node in focus, for the DOM's notion 4739 // of focus. 4740 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 4741 nativeCursorNodePointer()); 4742 // This will bring up the WebTextView and put it in focus, for 4743 // our view system's notion of focus 4744 rebuildWebTextView(); 4745 // Now we need to pass the event to it 4746 if (inEditingMode()) { 4747 mWebTextView.setDefaultSelection(); 4748 return mWebTextView.dispatchKeyEvent(event); 4749 } 4750 } else if (nativeHasFocusNode()) { 4751 // In this case, the cursor is not on a text input, but the focus 4752 // might be. Check it, and if so, hand over to the WebTextView. 4753 rebuildWebTextView(); 4754 if (inEditingMode()) { 4755 mWebTextView.setDefaultSelection(); 4756 return mWebTextView.dispatchKeyEvent(event); 4757 } 4758 } 4759 4760 // TODO: should we pass all the keys to DOM or check the meta tag 4761 if (nativeCursorWantsKeyEvents() || true) { 4762 // pass the key to DOM 4763 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4764 // return true as DOM handles the key 4765 return true; 4766 } 4767 4768 // Bubble up the key event as WebView doesn't handle it 4769 return false; 4770 } 4771 4772 @Override 4773 public boolean onKeyUp(int keyCode, KeyEvent event) { 4774 if (DebugFlags.WEB_VIEW) { 4775 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4776 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4777 } 4778 4779 if (mNativeClass == 0) { 4780 return false; 4781 } 4782 4783 // special CALL handling when cursor node's href is "tel:XXX" 4784 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4785 String text = nativeCursorText(); 4786 if (!nativeCursorIsTextInput() && text != null 4787 && text.startsWith(SCHEME_TEL)) { 4788 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4789 getContext().startActivity(intent); 4790 return true; 4791 } 4792 } 4793 4794 // Bubble up the key event if 4795 // 1. it is a system key; or 4796 // 2. the host application wants to handle it; 4797 if (event.isSystem() 4798 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4799 return false; 4800 } 4801 4802 // accessibility support 4803 if (accessibilityScriptInjected()) { 4804 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4805 // if an accessibility script is injected we delegate to it the key handling. 4806 // this script is a screen reader which is a fully fledged solution for blind 4807 // users to navigate in and interact with web pages. 4808 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4809 return true; 4810 } else { 4811 // Clean up if accessibility was disabled after loading the current URL. 4812 mAccessibilityScriptInjected = false; 4813 } 4814 } else if (mAccessibilityInjector != null) { 4815 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4816 if (mAccessibilityInjector.onKeyEvent(event)) { 4817 // if an accessibility injector is present (no JavaScript enabled or the site 4818 // opts out injecting our JavaScript screen reader) we let it decide whether to 4819 // act on and consume the event. 4820 return true; 4821 } 4822 } else { 4823 // Clean up if accessibility was disabled after loading the current URL. 4824 mAccessibilityInjector = null; 4825 } 4826 } 4827 4828 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4829 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4830 if (nativePageShouldHandleShiftAndArrows()) { 4831 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4832 return true; 4833 } 4834 // always handle the navigation keys in the UI thread 4835 // Bubble up the key event as WebView doesn't handle it 4836 return false; 4837 } 4838 4839 if (isEnterActionKey(keyCode)) { 4840 // remove the long press message first 4841 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4842 mGotCenterDown = false; 4843 4844 if (mSelectingText) { 4845 if (mExtendSelection) { 4846 copySelection(); 4847 selectionDone(); 4848 } else { 4849 mExtendSelection = true; 4850 nativeSetExtendSelection(); 4851 invalidate(); // draw the i-beam instead of the arrow 4852 } 4853 return true; // discard press if copy in progress 4854 } 4855 4856 // perform the single click 4857 Rect visibleRect = sendOurVisibleRect(); 4858 // Note that sendOurVisibleRect calls viewToContent, so the 4859 // coordinates should be in content coordinates. 4860 if (!nativeCursorIntersects(visibleRect)) { 4861 return false; 4862 } 4863 WebViewCore.CursorData data = cursorData(); 4864 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4865 playSoundEffect(SoundEffectConstants.CLICK); 4866 if (nativeCursorIsTextInput()) { 4867 rebuildWebTextView(); 4868 centerKeyPressOnTextField(); 4869 if (inEditingMode()) { 4870 mWebTextView.setDefaultSelection(); 4871 } 4872 return true; 4873 } 4874 clearTextEntry(); 4875 nativeShowCursorTimed(); 4876 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4877 return true; 4878 } 4879 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 4880 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4881 nativeCursorNodePointer()); 4882 return true; 4883 } 4884 } 4885 4886 // TODO: should we pass all the keys to DOM or check the meta tag 4887 if (nativeCursorWantsKeyEvents() || true) { 4888 // pass the key to DOM 4889 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4890 // return true as DOM handles the key 4891 return true; 4892 } 4893 4894 // Bubble up the key event as WebView doesn't handle it 4895 return false; 4896 } 4897 4898 /* 4899 * Enter selecting text mode, and see if CAB should be shown. 4900 * Returns true if the WebView is now in 4901 * selecting text mode (including if it was already in that mode, and this 4902 * method did nothing). 4903 */ 4904 private boolean setUpSelect(boolean selectWord, int x, int y) { 4905 if (0 == mNativeClass) return false; // client isn't initialized 4906 if (inFullScreenMode()) return false; 4907 if (mSelectingText) return true; 4908 nativeResetSelection(); 4909 if (selectWord && !nativeWordSelection(x, y)) { 4910 selectionDone(); 4911 return false; 4912 } 4913 mSelectCallback = new SelectActionModeCallback(); 4914 mSelectCallback.setWebView(this); 4915 if (startActionMode(mSelectCallback) == null) { 4916 // There is no ActionMode, so do not allow the user to modify a 4917 // selection. 4918 selectionDone(); 4919 return false; 4920 } 4921 mExtendSelection = false; 4922 mSelectingText = mDrawSelectionPointer = true; 4923 // don't let the picture change during text selection 4924 WebViewCore.pauseUpdatePicture(mWebViewCore); 4925 if (nativeHasCursorNode()) { 4926 Rect rect = nativeCursorNodeBounds(); 4927 mSelectX = contentToViewX(rect.left); 4928 mSelectY = contentToViewY(rect.top); 4929 } else if (mLastTouchY > getVisibleTitleHeight()) { 4930 mSelectX = mScrollX + mLastTouchX; 4931 mSelectY = mScrollY + mLastTouchY; 4932 } else { 4933 mSelectX = mScrollX + getViewWidth() / 2; 4934 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4935 } 4936 nativeHideCursor(); 4937 mMinAutoScrollX = 0; 4938 mMaxAutoScrollX = getViewWidth(); 4939 mMinAutoScrollY = 0; 4940 mMaxAutoScrollY = getViewHeightWithTitle(); 4941 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 4942 viewToContentY(mSelectY), mScrollingLayerRect, 4943 mScrollingLayerBounds); 4944 if (mScrollingLayer != 0) { 4945 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 4946 mMinAutoScrollX = Math.max(mMinAutoScrollX, 4947 contentToViewX(mScrollingLayerBounds.left)); 4948 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 4949 contentToViewX(mScrollingLayerBounds.right)); 4950 } 4951 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 4952 mMinAutoScrollY = Math.max(mMinAutoScrollY, 4953 contentToViewY(mScrollingLayerBounds.top)); 4954 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 4955 contentToViewY(mScrollingLayerBounds.bottom)); 4956 } 4957 } 4958 mMinAutoScrollX += SELECT_SCROLL; 4959 mMaxAutoScrollX -= SELECT_SCROLL; 4960 mMinAutoScrollY += SELECT_SCROLL; 4961 mMaxAutoScrollY -= SELECT_SCROLL; 4962 return true; 4963 } 4964 4965 /** 4966 * Use this method to put the WebView into text selection mode. 4967 * Do not rely on this functionality; it will be deprecated in the future. 4968 */ 4969 public void emulateShiftHeld() { 4970 setUpSelect(false, 0, 0); 4971 } 4972 4973 /** 4974 * Select all of the text in this WebView. 4975 * 4976 * @hide pending API council approval. 4977 */ 4978 public void selectAll() { 4979 if (0 == mNativeClass) return; // client isn't initialized 4980 if (inFullScreenMode()) return; 4981 if (!mSelectingText) { 4982 // retrieve a point somewhere within the text 4983 Point select = nativeSelectableText(); 4984 if (!selectText(select.x, select.y)) return; 4985 } 4986 nativeSelectAll(); 4987 mDrawSelectionPointer = false; 4988 mExtendSelection = true; 4989 invalidate(); 4990 } 4991 4992 /** 4993 * Called when the selection has been removed. 4994 */ 4995 void selectionDone() { 4996 if (mSelectingText) { 4997 mSelectingText = false; 4998 // finish is idempotent, so this is fine even if selectionDone was 4999 // called by mSelectCallback.onDestroyActionMode 5000 mSelectCallback.finish(); 5001 mSelectCallback = null; 5002 WebViewCore.resumePriority(); 5003 WebViewCore.resumeUpdatePicture(mWebViewCore); 5004 invalidate(); // redraw without selection 5005 mAutoScrollX = 0; 5006 mAutoScrollY = 0; 5007 mSentAutoScrollMessage = false; 5008 } 5009 } 5010 5011 /** 5012 * Copy the selection to the clipboard 5013 * 5014 * @hide pending API council approval. 5015 */ 5016 public boolean copySelection() { 5017 boolean copiedSomething = false; 5018 String selection = getSelection(); 5019 if (selection != null && selection != "") { 5020 if (DebugFlags.WEB_VIEW) { 5021 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5022 } 5023 Toast.makeText(mContext 5024 , com.android.internal.R.string.text_copied 5025 , Toast.LENGTH_SHORT).show(); 5026 copiedSomething = true; 5027 ClipboardManager cm = (ClipboardManager)getContext() 5028 .getSystemService(Context.CLIPBOARD_SERVICE); 5029 cm.setText(selection); 5030 } 5031 invalidate(); // remove selection region and pointer 5032 return copiedSomething; 5033 } 5034 5035 /** 5036 * Returns the currently highlighted text as a string. 5037 */ 5038 String getSelection() { 5039 if (mNativeClass == 0) return ""; 5040 return nativeGetSelection(); 5041 } 5042 5043 @Override 5044 protected void onAttachedToWindow() { 5045 super.onAttachedToWindow(); 5046 if (hasWindowFocus()) setActive(true); 5047 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5048 if (mGlobalLayoutListener == null) { 5049 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5050 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5051 } 5052 if (mScrollChangedListener == null) { 5053 mScrollChangedListener = new InnerScrollChangedListener(); 5054 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5055 } 5056 5057 addAccessibilityApisToJavaScript(); 5058 } 5059 5060 @Override 5061 protected void onDetachedFromWindow() { 5062 clearHelpers(); 5063 mZoomManager.dismissZoomPicker(); 5064 if (hasWindowFocus()) setActive(false); 5065 5066 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5067 if (mGlobalLayoutListener != null) { 5068 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5069 mGlobalLayoutListener = null; 5070 } 5071 if (mScrollChangedListener != null) { 5072 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5073 mScrollChangedListener = null; 5074 } 5075 5076 removeAccessibilityApisFromJavaScript(); 5077 5078 super.onDetachedFromWindow(); 5079 } 5080 5081 @Override 5082 protected void onVisibilityChanged(View changedView, int visibility) { 5083 super.onVisibilityChanged(changedView, visibility); 5084 // The zoomManager may be null if the webview is created from XML that 5085 // specifies the view's visibility param as not visible (see http://b/2794841) 5086 if (visibility != View.VISIBLE && mZoomManager != null) { 5087 mZoomManager.dismissZoomPicker(); 5088 } 5089 } 5090 5091 /** 5092 * @deprecated WebView no longer needs to implement 5093 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5094 */ 5095 @Deprecated 5096 public void onChildViewAdded(View parent, View child) {} 5097 5098 /** 5099 * @deprecated WebView no longer needs to implement 5100 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5101 */ 5102 @Deprecated 5103 public void onChildViewRemoved(View p, View child) {} 5104 5105 /** 5106 * @deprecated WebView should not have implemented 5107 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5108 */ 5109 @Deprecated 5110 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5111 } 5112 5113 void setActive(boolean active) { 5114 if (active) { 5115 if (hasFocus()) { 5116 // If our window regained focus, and we have focus, then begin 5117 // drawing the cursor ring 5118 mDrawCursorRing = true; 5119 setFocusControllerActive(true); 5120 if (mNativeClass != 0) { 5121 nativeRecordButtons(true, false, true); 5122 } 5123 } else { 5124 if (!inEditingMode()) { 5125 // If our window gained focus, but we do not have it, do not 5126 // draw the cursor ring. 5127 mDrawCursorRing = false; 5128 setFocusControllerActive(false); 5129 } 5130 // We do not call nativeRecordButtons here because we assume 5131 // that when we lost focus, or window focus, it got called with 5132 // false for the first parameter 5133 } 5134 } else { 5135 if (!mZoomManager.isZoomPickerVisible()) { 5136 /* 5137 * The external zoom controls come in their own window, so our 5138 * window loses focus. Our policy is to not draw the cursor ring 5139 * if our window is not focused, but this is an exception since 5140 * the user can still navigate the web page with the zoom 5141 * controls showing. 5142 */ 5143 mDrawCursorRing = false; 5144 } 5145 mKeysPressed.clear(); 5146 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5147 mTouchMode = TOUCH_DONE_MODE; 5148 if (mNativeClass != 0) { 5149 nativeRecordButtons(false, false, true); 5150 } 5151 setFocusControllerActive(false); 5152 } 5153 invalidate(); 5154 } 5155 5156 // To avoid drawing the cursor ring, and remove the TextView when our window 5157 // loses focus. 5158 @Override 5159 public void onWindowFocusChanged(boolean hasWindowFocus) { 5160 setActive(hasWindowFocus); 5161 if (hasWindowFocus) { 5162 JWebCoreJavaBridge.setActiveWebView(this); 5163 } else { 5164 JWebCoreJavaBridge.removeActiveWebView(this); 5165 } 5166 super.onWindowFocusChanged(hasWindowFocus); 5167 } 5168 5169 /* 5170 * Pass a message to WebCore Thread, telling the WebCore::Page's 5171 * FocusController to be "inactive" so that it will 5172 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5173 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5174 */ 5175 /* package */ void setFocusControllerActive(boolean active) { 5176 if (mWebViewCore == null) return; 5177 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5178 // Need to send this message after the document regains focus. 5179 if (active && mListBoxMessage != null) { 5180 mWebViewCore.sendMessage(mListBoxMessage); 5181 mListBoxMessage = null; 5182 } 5183 } 5184 5185 @Override 5186 protected void onFocusChanged(boolean focused, int direction, 5187 Rect previouslyFocusedRect) { 5188 if (DebugFlags.WEB_VIEW) { 5189 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5190 } 5191 if (focused) { 5192 // When we regain focus, if we have window focus, resume drawing 5193 // the cursor ring 5194 if (hasWindowFocus()) { 5195 mDrawCursorRing = true; 5196 if (mNativeClass != 0) { 5197 nativeRecordButtons(true, false, true); 5198 } 5199 setFocusControllerActive(true); 5200 //} else { 5201 // The WebView has gained focus while we do not have 5202 // windowfocus. When our window lost focus, we should have 5203 // called nativeRecordButtons(false...) 5204 } 5205 } else { 5206 // When we lost focus, unless focus went to the TextView (which is 5207 // true if we are in editing mode), stop drawing the cursor ring. 5208 if (!inEditingMode()) { 5209 mDrawCursorRing = false; 5210 if (mNativeClass != 0) { 5211 nativeRecordButtons(false, false, true); 5212 } 5213 setFocusControllerActive(false); 5214 } 5215 mKeysPressed.clear(); 5216 } 5217 5218 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5219 } 5220 5221 void setGLRectViewport() { 5222 // Use the getGlobalVisibleRect() to get the intersection among the parents 5223 // visible == false means we're clipped - send a null rect down to indicate that 5224 // we should not draw 5225 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5226 if (visible) { 5227 // Then need to invert the Y axis, just for GL 5228 View rootView = getRootView(); 5229 int rootViewHeight = rootView.getHeight(); 5230 int savedWebViewBottom = mGLRectViewport.bottom; 5231 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeight(); 5232 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5233 mGLViewportEmpty = false; 5234 } else { 5235 mGLViewportEmpty = true; 5236 } 5237 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport); 5238 } 5239 5240 /** 5241 * @hide 5242 */ 5243 @Override 5244 protected boolean setFrame(int left, int top, int right, int bottom) { 5245 boolean changed = super.setFrame(left, top, right, bottom); 5246 if (!changed && mHeightCanMeasure) { 5247 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5248 // in WebViewCore after we get the first layout. We do call 5249 // requestLayout() when we get contentSizeChanged(). But the View 5250 // system won't call onSizeChanged if the dimension is not changed. 5251 // In this case, we need to call sendViewSizeZoom() explicitly to 5252 // notify the WebKit about the new dimensions. 5253 sendViewSizeZoom(false); 5254 } 5255 setGLRectViewport(); 5256 return changed; 5257 } 5258 5259 @Override 5260 protected void onSizeChanged(int w, int h, int ow, int oh) { 5261 super.onSizeChanged(w, h, ow, oh); 5262 5263 // adjust the max viewport width depending on the view dimensions. This 5264 // is to ensure the scaling is not going insane. So do not shrink it if 5265 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5266 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5267 if (newMaxViewportWidth > sMaxViewportWidth) { 5268 sMaxViewportWidth = newMaxViewportWidth; 5269 } 5270 5271 mZoomManager.onSizeChanged(w, h, ow, oh); 5272 } 5273 5274 @Override 5275 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5276 super.onScrollChanged(l, t, oldl, oldt); 5277 if (!mInOverScrollMode) { 5278 sendOurVisibleRect(); 5279 // update WebKit if visible title bar height changed. The logic is same 5280 // as getVisibleTitleHeight. 5281 int titleHeight = getTitleHeight(); 5282 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5283 sendViewSizeZoom(false); 5284 } 5285 } 5286 } 5287 5288 @Override 5289 public boolean dispatchKeyEvent(KeyEvent event) { 5290 switch (event.getAction()) { 5291 case KeyEvent.ACTION_DOWN: 5292 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5293 break; 5294 case KeyEvent.ACTION_MULTIPLE: 5295 // Always accept the action. 5296 break; 5297 case KeyEvent.ACTION_UP: 5298 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5299 if (location == -1) { 5300 // We did not receive the key down for this key, so do not 5301 // handle the key up. 5302 return false; 5303 } else { 5304 // We did receive the key down. Handle the key up, and 5305 // remove it from our pressed keys. 5306 mKeysPressed.remove(location); 5307 } 5308 break; 5309 default: 5310 // Accept the action. This should not happen, unless a new 5311 // action is added to KeyEvent. 5312 break; 5313 } 5314 if (inEditingMode() && mWebTextView.isFocused()) { 5315 // Ensure that the WebTextView gets the event, even if it does 5316 // not currently have a bounds. 5317 return mWebTextView.dispatchKeyEvent(event); 5318 } else { 5319 return super.dispatchKeyEvent(event); 5320 } 5321 } 5322 5323 // Here are the snap align logic: 5324 // 1. If it starts nearly horizontally or vertically, snap align; 5325 // 2. If there is a dramitic direction change, let it go; 5326 // 3. If there is a same direction back and forth, lock it. 5327 5328 // adjustable parameters 5329 private int mMinLockSnapReverseDistance; 5330 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5331 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5332 5333 private boolean hitFocusedPlugin(int contentX, int contentY) { 5334 if (DebugFlags.WEB_VIEW) { 5335 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5336 Rect r = nativeFocusNodeBounds(); 5337 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5338 + ", " + r.right + ", " + r.bottom + ")"); 5339 } 5340 return nativeFocusIsPlugin() 5341 && nativeFocusNodeBounds().contains(contentX, contentY); 5342 } 5343 5344 private boolean shouldForwardTouchEvent() { 5345 return mFullScreenHolder != null || (mForwardTouchEvents 5346 && !mSelectingText 5347 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 5348 } 5349 5350 private boolean inFullScreenMode() { 5351 return mFullScreenHolder != null; 5352 } 5353 5354 private void dismissFullScreenMode() { 5355 if (inFullScreenMode()) { 5356 mFullScreenHolder.dismiss(); 5357 mFullScreenHolder = null; 5358 } 5359 } 5360 5361 void onPinchToZoomAnimationStart() { 5362 // cancel the single touch handling 5363 cancelTouch(); 5364 onZoomAnimationStart(); 5365 } 5366 5367 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5368 onZoomAnimationEnd(); 5369 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5370 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5371 // as it may trigger the unwanted fling. 5372 mTouchMode = TOUCH_PINCH_DRAG; 5373 mConfirmMove = true; 5374 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5375 } 5376 5377 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5378 // layer is found. 5379 private void startScrollingLayer(float x, float y) { 5380 int contentX = viewToContentX((int) x + mScrollX); 5381 int contentY = viewToContentY((int) y + mScrollY); 5382 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5383 mScrollingLayerRect, mScrollingLayerBounds); 5384 if (mScrollingLayer != 0) { 5385 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5386 } 5387 } 5388 5389 // 1/(density * density) used to compute the distance between points. 5390 // Computed in init(). 5391 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5392 5393 // The distance between two points reported in onTouchEvent scaled by the 5394 // density of the screen. 5395 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5396 5397 @Override 5398 public boolean onTouchEvent(MotionEvent ev) { 5399 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5400 return false; 5401 } 5402 5403 if (DebugFlags.WEB_VIEW) { 5404 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5405 + " mTouchMode=" + mTouchMode 5406 + " numPointers=" + ev.getPointerCount()); 5407 } 5408 5409 int action = ev.getActionMasked(); 5410 if (ev.getPointerCount() > 1) { // Multi-touch 5411 mIsHandlingMultiTouch = true; 5412 5413 // If WebKit already showed no interests in this sequence of events, 5414 // WebView handles them directly. 5415 if (mPreventDefault == PREVENT_DEFAULT_NO) { 5416 handleMultiTouchInWebView(ev); 5417 } else { 5418 passMultiTouchToWebKit(ev); 5419 } 5420 return true; 5421 } else { 5422 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 5423 if (detector != null) { 5424 // ScaleGestureDetector needs a consistent event stream to operate properly. 5425 // It won't take any action with fewer than two pointers, but it needs to 5426 // update internal bookkeeping state. 5427 detector.onTouchEvent(ev); 5428 } 5429 } 5430 5431 // Skip ACTION_MOVE for single touch if it's still handling multi-touch. 5432 if (mIsHandlingMultiTouch && action == MotionEvent.ACTION_MOVE) { 5433 return false; 5434 } 5435 5436 return handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 5437 } 5438 5439 /* 5440 * Common code for single touch and multi-touch. 5441 * (x, y) denotes current focus point, which is the touch point for single touch 5442 * and the middle point for multi-touch. 5443 */ 5444 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5445 long eventTime = ev.getEventTime(); 5446 5447 5448 // Due to the touch screen edge effect, a touch closer to the edge 5449 // always snapped to the edge. As getViewWidth() can be different from 5450 // getWidth() due to the scrollbar, adjusting the point to match 5451 // getViewWidth(). Same applied to the height. 5452 x = Math.min(x, getViewWidth() - 1); 5453 y = Math.min(y, getViewHeightWithTitle() - 1); 5454 5455 int deltaX = mLastTouchX - x; 5456 int deltaY = mLastTouchY - y; 5457 int contentX = viewToContentX(x + mScrollX); 5458 int contentY = viewToContentY(y + mScrollY); 5459 5460 switch (action) { 5461 case MotionEvent.ACTION_DOWN: { 5462 mPreventDefault = PREVENT_DEFAULT_NO; 5463 mConfirmMove = false; 5464 mIsHandlingMultiTouch = false; 5465 mInitialHitTestResult = null; 5466 if (!mScroller.isFinished()) { 5467 // stop the current scroll animation, but if this is 5468 // the start of a fling, allow it to add to the current 5469 // fling's velocity 5470 mScroller.abortAnimation(); 5471 mTouchMode = TOUCH_DRAG_START_MODE; 5472 mConfirmMove = true; 5473 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5474 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5475 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5476 if (getSettings().supportTouchOnly()) { 5477 removeTouchHighlight(true); 5478 } 5479 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5480 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5481 } else { 5482 // commit the short press action for the previous tap 5483 doShortPress(); 5484 mTouchMode = TOUCH_INIT_MODE; 5485 mDeferTouchProcess = (!inFullScreenMode() 5486 && mForwardTouchEvents) ? hitFocusedPlugin( 5487 contentX, contentY) : false; 5488 } 5489 } else { // the normal case 5490 mTouchMode = TOUCH_INIT_MODE; 5491 mDeferTouchProcess = (!inFullScreenMode() 5492 && mForwardTouchEvents) ? hitFocusedPlugin( 5493 contentX, contentY) : false; 5494 mWebViewCore.sendMessage( 5495 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5496 if (getSettings().supportTouchOnly()) { 5497 TouchHighlightData data = new TouchHighlightData(); 5498 data.mX = contentX; 5499 data.mY = contentY; 5500 data.mSlop = viewToContentDimension(mNavSlop); 5501 mWebViewCore.sendMessageDelayed( 5502 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5503 ViewConfiguration.getTapTimeout()); 5504 if (DEBUG_TOUCH_HIGHLIGHT) { 5505 if (getSettings().getNavDump()) { 5506 mTouchHighlightX = (int) x + mScrollX; 5507 mTouchHighlightY = (int) y + mScrollY; 5508 mPrivateHandler.postDelayed(new Runnable() { 5509 public void run() { 5510 mTouchHighlightX = mTouchHighlightY = 0; 5511 invalidate(); 5512 } 5513 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5514 } 5515 } 5516 } 5517 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5518 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5519 (eventTime - mLastTouchUpTime), eventTime); 5520 } 5521 if (mSelectingText) { 5522 mDrawSelectionPointer = false; 5523 mSelectionStarted = nativeStartSelection(contentX, contentY); 5524 if (DebugFlags.WEB_VIEW) { 5525 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5526 } 5527 invalidate(); 5528 } 5529 } 5530 // Trigger the link 5531 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 5532 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 5533 mPrivateHandler.sendEmptyMessageDelayed( 5534 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5535 mPrivateHandler.sendEmptyMessageDelayed( 5536 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5537 if (inFullScreenMode() || mDeferTouchProcess) { 5538 mPreventDefault = PREVENT_DEFAULT_YES; 5539 } else if (mForwardTouchEvents) { 5540 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5541 } else { 5542 mPreventDefault = PREVENT_DEFAULT_NO; 5543 } 5544 // pass the touch events from UI thread to WebCore thread 5545 if (shouldForwardTouchEvent()) { 5546 TouchEventData ted = new TouchEventData(); 5547 ted.mAction = action; 5548 ted.mIds = new int[1]; 5549 ted.mIds[0] = ev.getPointerId(0); 5550 ted.mPoints = new Point[1]; 5551 ted.mPoints[0] = new Point(contentX, contentY); 5552 ted.mMetaState = ev.getMetaState(); 5553 ted.mReprocess = mDeferTouchProcess; 5554 ted.mNativeLayer = nativeScrollableLayer( 5555 contentX, contentY, ted.mNativeLayerRect, null); 5556 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5557 if (mDeferTouchProcess) { 5558 // still needs to set them for compute deltaX/Y 5559 mLastTouchX = x; 5560 mLastTouchY = y; 5561 break; 5562 } 5563 if (!inFullScreenMode()) { 5564 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5565 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5566 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5567 action, 0), TAP_TIMEOUT); 5568 } 5569 } 5570 } 5571 startTouch(x, y, eventTime); 5572 break; 5573 } 5574 case MotionEvent.ACTION_MOVE: { 5575 boolean firstMove = false; 5576 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5577 >= mTouchSlopSquare) { 5578 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5579 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5580 mConfirmMove = true; 5581 firstMove = true; 5582 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5583 mTouchMode = TOUCH_INIT_MODE; 5584 } 5585 if (getSettings().supportTouchOnly()) { 5586 removeTouchHighlight(true); 5587 } 5588 } 5589 // pass the touch events from UI thread to WebCore thread 5590 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5591 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5592 TouchEventData ted = new TouchEventData(); 5593 ted.mAction = action; 5594 ted.mIds = new int[1]; 5595 ted.mIds[0] = ev.getPointerId(0); 5596 ted.mPoints = new Point[1]; 5597 ted.mPoints[0] = new Point(contentX, contentY); 5598 ted.mMetaState = ev.getMetaState(); 5599 ted.mReprocess = mDeferTouchProcess; 5600 ted.mNativeLayer = mScrollingLayer; 5601 ted.mNativeLayerRect.set(mScrollingLayerRect); 5602 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5603 mLastSentTouchTime = eventTime; 5604 if (mDeferTouchProcess) { 5605 break; 5606 } 5607 if (firstMove && !inFullScreenMode()) { 5608 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5609 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5610 action, 0), TAP_TIMEOUT); 5611 } 5612 } 5613 if (mTouchMode == TOUCH_DONE_MODE 5614 || mPreventDefault == PREVENT_DEFAULT_YES) { 5615 // no dragging during scroll zoom animation, or when prevent 5616 // default is yes 5617 break; 5618 } 5619 if (mVelocityTracker == null) { 5620 Log.e(LOGTAG, "Got null mVelocityTracker when " 5621 + "mPreventDefault = " + mPreventDefault 5622 + " mDeferTouchProcess = " + mDeferTouchProcess 5623 + " mTouchMode = " + mTouchMode); 5624 } else { 5625 mVelocityTracker.addMovement(ev); 5626 } 5627 if (mSelectingText && mSelectionStarted) { 5628 if (DebugFlags.WEB_VIEW) { 5629 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5630 } 5631 ViewParent parent = getParent(); 5632 if (parent != null) { 5633 parent.requestDisallowInterceptTouchEvent(true); 5634 } 5635 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 5636 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 5637 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 5638 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 5639 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 5640 && !mSentAutoScrollMessage) { 5641 mSentAutoScrollMessage = true; 5642 mPrivateHandler.sendEmptyMessageDelayed( 5643 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5644 } 5645 if (deltaX != 0 || deltaY != 0) { 5646 nativeExtendSelection(contentX, contentY); 5647 invalidate(); 5648 } 5649 break; 5650 } 5651 5652 if (mTouchMode != TOUCH_DRAG_MODE && 5653 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5654 5655 if (!mConfirmMove) { 5656 break; 5657 } 5658 5659 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5660 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5661 // track mLastTouchTime as we may need to do fling at 5662 // ACTION_UP 5663 mLastTouchTime = eventTime; 5664 break; 5665 } 5666 5667 // Only lock dragging to one axis if we don't have a scale in progress. 5668 // Scaling implies free-roaming movement. Note this is only ever a question 5669 // if mZoomManager.supportsPanDuringZoom() is true. 5670 final ScaleGestureDetector detector = 5671 mZoomManager.getMultiTouchGestureDetector(); 5672 if (detector == null || !detector.isInProgress()) { 5673 // if it starts nearly horizontal or vertical, enforce it 5674 int ax = Math.abs(deltaX); 5675 int ay = Math.abs(deltaY); 5676 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5677 mSnapScrollMode = SNAP_X; 5678 mSnapPositive = deltaX > 0; 5679 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5680 mSnapScrollMode = SNAP_Y; 5681 mSnapPositive = deltaY > 0; 5682 } 5683 } 5684 5685 mTouchMode = TOUCH_DRAG_MODE; 5686 mLastTouchX = x; 5687 mLastTouchY = y; 5688 deltaX = 0; 5689 deltaY = 0; 5690 5691 startScrollingLayer(x, y); 5692 startDrag(); 5693 } 5694 5695 // do pan 5696 boolean done = false; 5697 boolean keepScrollBarsVisible = false; 5698 if (deltaX == 0 && deltaY == 0) { 5699 keepScrollBarsVisible = done = true; 5700 } else { 5701 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5702 int ax = Math.abs(deltaX); 5703 int ay = Math.abs(deltaY); 5704 if (mSnapScrollMode == SNAP_X) { 5705 // radical change means getting out of snap mode 5706 if (ay > MAX_SLOPE_FOR_DIAG * ax 5707 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5708 mSnapScrollMode = SNAP_NONE; 5709 } 5710 // reverse direction means lock in the snap mode 5711 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5712 (mSnapPositive 5713 ? deltaX < -mMinLockSnapReverseDistance 5714 : deltaX > mMinLockSnapReverseDistance)) { 5715 mSnapScrollMode |= SNAP_LOCK; 5716 } 5717 } else { 5718 // radical change means getting out of snap mode 5719 if (ax > MAX_SLOPE_FOR_DIAG * ay 5720 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5721 mSnapScrollMode = SNAP_NONE; 5722 } 5723 // reverse direction means lock in the snap mode 5724 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5725 (mSnapPositive 5726 ? deltaY < -mMinLockSnapReverseDistance 5727 : deltaY > mMinLockSnapReverseDistance)) { 5728 mSnapScrollMode |= SNAP_LOCK; 5729 } 5730 } 5731 } 5732 if (mSnapScrollMode != SNAP_NONE) { 5733 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5734 deltaY = 0; 5735 } else { 5736 deltaX = 0; 5737 } 5738 } 5739 if ((deltaX | deltaY) != 0) { 5740 if (deltaX != 0) { 5741 mLastTouchX = x; 5742 } 5743 if (deltaY != 0) { 5744 mLastTouchY = y; 5745 } 5746 mHeldMotionless = MOTIONLESS_FALSE; 5747 } 5748 mLastTouchTime = eventTime; 5749 } 5750 5751 doDrag(deltaX, deltaY); 5752 5753 // Turn off scrollbars when dragging a layer. 5754 if (keepScrollBarsVisible && 5755 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5756 if (mHeldMotionless != MOTIONLESS_TRUE) { 5757 mHeldMotionless = MOTIONLESS_TRUE; 5758 invalidate(); 5759 } 5760 // keep the scrollbar on the screen even there is no scroll 5761 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5762 false); 5763 // return false to indicate that we can't pan out of the 5764 // view space 5765 return !done; 5766 } 5767 break; 5768 } 5769 case MotionEvent.ACTION_UP: { 5770 if (!isFocused()) requestFocus(); 5771 // pass the touch events from UI thread to WebCore thread 5772 if (shouldForwardTouchEvent()) { 5773 TouchEventData ted = new TouchEventData(); 5774 ted.mIds = new int[1]; 5775 ted.mIds[0] = ev.getPointerId(0); 5776 ted.mAction = action; 5777 ted.mPoints = new Point[1]; 5778 ted.mPoints[0] = new Point(contentX, contentY); 5779 ted.mMetaState = ev.getMetaState(); 5780 ted.mReprocess = mDeferTouchProcess; 5781 ted.mNativeLayer = mScrollingLayer; 5782 ted.mNativeLayerRect.set(mScrollingLayerRect); 5783 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5784 } 5785 mLastTouchUpTime = eventTime; 5786 if (mSentAutoScrollMessage) { 5787 mAutoScrollX = mAutoScrollY = 0; 5788 } 5789 switch (mTouchMode) { 5790 case TOUCH_DOUBLE_TAP_MODE: // double tap 5791 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5792 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5793 if (inFullScreenMode() || mDeferTouchProcess) { 5794 TouchEventData ted = new TouchEventData(); 5795 ted.mIds = new int[1]; 5796 ted.mIds[0] = ev.getPointerId(0); 5797 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5798 ted.mPoints = new Point[1]; 5799 ted.mPoints[0] = new Point(contentX, contentY); 5800 ted.mMetaState = ev.getMetaState(); 5801 ted.mReprocess = mDeferTouchProcess; 5802 ted.mNativeLayer = nativeScrollableLayer( 5803 contentX, contentY, 5804 ted.mNativeLayerRect, null); 5805 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5806 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5807 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5808 mTouchMode = TOUCH_DONE_MODE; 5809 } 5810 break; 5811 case TOUCH_INIT_MODE: // tap 5812 case TOUCH_SHORTPRESS_START_MODE: 5813 case TOUCH_SHORTPRESS_MODE: 5814 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5815 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5816 if (mConfirmMove) { 5817 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5818 " WebCore's response for touch down."); 5819 if (mPreventDefault != PREVENT_DEFAULT_YES 5820 && (computeMaxScrollX() > 0 5821 || computeMaxScrollY() > 0)) { 5822 // If the user has performed a very quick touch 5823 // sequence it is possible that we may get here 5824 // before WebCore has had a chance to process the events. 5825 // In this case, any call to preventDefault in the 5826 // JS touch handler will not have been executed yet. 5827 // Hence we will see both the UI (now) and WebCore 5828 // (when context switches) handling the event, 5829 // regardless of whether the web developer actually 5830 // doeses preventDefault in their touch handler. This 5831 // is the nature of our asynchronous touch model. 5832 5833 // we will not rewrite drag code here, but we 5834 // will try fling if it applies. 5835 WebViewCore.reducePriority(); 5836 // to get better performance, pause updating the 5837 // picture 5838 WebViewCore.pauseUpdatePicture(mWebViewCore); 5839 // fall through to TOUCH_DRAG_MODE 5840 } else { 5841 // WebKit may consume the touch event and modify 5842 // DOM. drawContentPicture() will be called with 5843 // animateSroll as true for better performance. 5844 // Force redraw in high-quality. 5845 invalidate(); 5846 break; 5847 } 5848 } else { 5849 if (mSelectingText) { 5850 // tapping on selection or controls does nothing 5851 if (!nativeHitSelection(contentX, contentY)) { 5852 selectionDone(); 5853 } 5854 break; 5855 } 5856 // only trigger double tap if the WebView is 5857 // scalable 5858 if (mTouchMode == TOUCH_INIT_MODE 5859 && (canZoomIn() || canZoomOut())) { 5860 mPrivateHandler.sendEmptyMessageDelayed( 5861 RELEASE_SINGLE_TAP, ViewConfiguration 5862 .getDoubleTapTimeout()); 5863 } else { 5864 doShortPress(); 5865 } 5866 break; 5867 } 5868 case TOUCH_DRAG_MODE: 5869 case TOUCH_DRAG_LAYER_MODE: 5870 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5871 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5872 // if the user waits a while w/o moving before the 5873 // up, we don't want to do a fling 5874 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5875 if (mVelocityTracker == null) { 5876 Log.e(LOGTAG, "Got null mVelocityTracker when " 5877 + "mPreventDefault = " 5878 + mPreventDefault 5879 + " mDeferTouchProcess = " 5880 + mDeferTouchProcess); 5881 } else { 5882 mVelocityTracker.addMovement(ev); 5883 } 5884 // set to MOTIONLESS_IGNORE so that it won't keep 5885 // removing and sending message in 5886 // drawCoreAndCursorRing() 5887 mHeldMotionless = MOTIONLESS_IGNORE; 5888 doFling(); 5889 break; 5890 } else { 5891 if (mScroller.springBack(mScrollX, mScrollY, 0, 5892 computeMaxScrollX(), 0, 5893 computeMaxScrollY())) { 5894 invalidate(); 5895 } 5896 } 5897 // redraw in high-quality, as we're done dragging 5898 mHeldMotionless = MOTIONLESS_TRUE; 5899 invalidate(); 5900 // fall through 5901 case TOUCH_DRAG_START_MODE: 5902 // TOUCH_DRAG_START_MODE should not happen for the real 5903 // device as we almost certain will get a MOVE. But this 5904 // is possible on emulator. 5905 mLastVelocity = 0; 5906 WebViewCore.resumePriority(); 5907 if (!mSelectingText) { 5908 WebViewCore.resumeUpdatePicture(mWebViewCore); 5909 } 5910 break; 5911 } 5912 stopTouch(); 5913 break; 5914 } 5915 case MotionEvent.ACTION_CANCEL: { 5916 if (mTouchMode == TOUCH_DRAG_MODE) { 5917 mScroller.springBack(mScrollX, mScrollY, 0, 5918 computeMaxScrollX(), 0, computeMaxScrollY()); 5919 invalidate(); 5920 } 5921 cancelWebCoreTouchEvent(contentX, contentY, false); 5922 cancelTouch(); 5923 break; 5924 } 5925 } 5926 return true; 5927 } 5928 5929 private void passMultiTouchToWebKit(MotionEvent ev) { 5930 TouchEventData ted = new TouchEventData(); 5931 ted.mAction = ev.getActionMasked(); 5932 final int count = ev.getPointerCount(); 5933 ted.mIds = new int[count]; 5934 ted.mPoints = new Point[count]; 5935 for (int c = 0; c < count; c++) { 5936 ted.mIds[c] = ev.getPointerId(c); 5937 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5938 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5939 ted.mPoints[c] = new Point(x, y); 5940 } 5941 ted.mMetaState = ev.getMetaState(); 5942 ted.mReprocess = true; 5943 ted.mMotionEvent = MotionEvent.obtain(ev); 5944 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5945 cancelLongPress(); 5946 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5947 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5948 } 5949 5950 private void handleMultiTouchInWebView(MotionEvent ev) { 5951 if (DebugFlags.WEB_VIEW) { 5952 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 5953 + " mTouchMode=" + mTouchMode 5954 + " numPointers=" + ev.getPointerCount() 5955 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 5956 } 5957 5958 final ScaleGestureDetector detector = 5959 mZoomManager.getMultiTouchGestureDetector(); 5960 5961 // A few apps use WebView but don't instantiate gesture detector. 5962 // We don't need to support multi touch for them. 5963 if (detector == null) return; 5964 5965 float x = ev.getX(); 5966 float y = ev.getY(); 5967 5968 detector.onTouchEvent(ev); 5969 5970 if (detector.isInProgress()) { 5971 if (DebugFlags.WEB_VIEW) { 5972 Log.v(LOGTAG, "detector is in progress"); 5973 } 5974 mLastTouchTime = ev.getEventTime(); 5975 x = detector.getFocusX(); 5976 y = detector.getFocusY(); 5977 5978 cancelLongPress(); 5979 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5980 if (!mZoomManager.supportsPanDuringZoom()) { 5981 return; 5982 } 5983 mTouchMode = TOUCH_DRAG_MODE; 5984 if (mVelocityTracker == null) { 5985 mVelocityTracker = VelocityTracker.obtain(); 5986 } 5987 } 5988 5989 int action = ev.getActionMasked(); 5990 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5991 cancelTouch(); 5992 action = MotionEvent.ACTION_DOWN; 5993 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5994 // set mLastTouchX/Y to the remaining point 5995 mLastTouchX = Math.round(x); 5996 mLastTouchY = Math.round(y); 5997 mIsHandlingMultiTouch = false; 5998 } else if (action == MotionEvent.ACTION_MOVE) { 5999 // negative x or y indicate it is on the edge, skip it. 6000 if (x < 0 || y < 0) { 6001 return; 6002 } 6003 } 6004 6005 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6006 } 6007 6008 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6009 if (shouldForwardTouchEvent()) { 6010 if (removeEvents) { 6011 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6012 } 6013 TouchEventData ted = new TouchEventData(); 6014 ted.mIds = new int[1]; 6015 ted.mIds[0] = 0; 6016 ted.mPoints = new Point[1]; 6017 ted.mPoints[0] = new Point(x, y); 6018 ted.mAction = MotionEvent.ACTION_CANCEL; 6019 ted.mNativeLayer = nativeScrollableLayer( 6020 x, y, ted.mNativeLayerRect, null); 6021 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6022 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6023 } 6024 } 6025 6026 private void startTouch(float x, float y, long eventTime) { 6027 // Remember where the motion event started 6028 mLastTouchX = Math.round(x); 6029 mLastTouchY = Math.round(y); 6030 mLastTouchTime = eventTime; 6031 mVelocityTracker = VelocityTracker.obtain(); 6032 mSnapScrollMode = SNAP_NONE; 6033 } 6034 6035 private void startDrag() { 6036 WebViewCore.reducePriority(); 6037 // to get better performance, pause updating the picture 6038 WebViewCore.pauseUpdatePicture(mWebViewCore); 6039 if (!mDragFromTextInput) { 6040 nativeHideCursor(); 6041 } 6042 6043 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6044 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6045 mZoomManager.invokeZoomPicker(); 6046 } 6047 } 6048 6049 private void doDrag(int deltaX, int deltaY) { 6050 if ((deltaX | deltaY) != 0) { 6051 int oldX = mScrollX; 6052 int oldY = mScrollY; 6053 int rangeX = computeMaxScrollX(); 6054 int rangeY = computeMaxScrollY(); 6055 int overscrollDistance = mOverscrollDistance; 6056 6057 // Check for the original scrolling layer in case we change 6058 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6059 // reached the edge of a layer but mScrollingLayer will be non-zero 6060 // if we initiated the drag on a layer. 6061 if (mScrollingLayer != 0) { 6062 final int contentX = viewToContentDimension(deltaX); 6063 final int contentY = viewToContentDimension(deltaY); 6064 6065 // Check the scrolling bounds to see if we will actually do any 6066 // scrolling. The rectangle is in document coordinates. 6067 final int maxX = mScrollingLayerRect.right; 6068 final int maxY = mScrollingLayerRect.bottom; 6069 final int resultX = Math.max(0, 6070 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6071 final int resultY = Math.max(0, 6072 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6073 6074 if (resultX != mScrollingLayerRect.left || 6075 resultY != mScrollingLayerRect.top) { 6076 // In case we switched to dragging the page. 6077 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6078 deltaX = contentX; 6079 deltaY = contentY; 6080 oldX = mScrollingLayerRect.left; 6081 oldY = mScrollingLayerRect.top; 6082 rangeX = maxX; 6083 rangeY = maxY; 6084 } else { 6085 // Scroll the main page if we are not going to scroll the 6086 // layer. This does not reset mScrollingLayer in case the 6087 // user changes directions and the layer can scroll the 6088 // other way. 6089 mTouchMode = TOUCH_DRAG_MODE; 6090 } 6091 } 6092 6093 if (mOverScrollGlow != null) { 6094 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6095 } 6096 6097 overScrollBy(deltaX, deltaY, oldX, oldY, 6098 rangeX, rangeY, 6099 mOverscrollDistance, mOverscrollDistance, true); 6100 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6101 invalidate(); 6102 } 6103 } 6104 mZoomManager.keepZoomPickerVisible(); 6105 } 6106 6107 private void stopTouch() { 6108 // we also use mVelocityTracker == null to tell us that we are 6109 // not "moving around", so we can take the slower/prettier 6110 // mode in the drawing code 6111 if (mVelocityTracker != null) { 6112 mVelocityTracker.recycle(); 6113 mVelocityTracker = null; 6114 } 6115 6116 // Release any pulled glows 6117 if (mOverScrollGlow != null) { 6118 mOverScrollGlow.releaseAll(); 6119 } 6120 } 6121 6122 private void cancelTouch() { 6123 // we also use mVelocityTracker == null to tell us that we are 6124 // not "moving around", so we can take the slower/prettier 6125 // mode in the drawing code 6126 if (mVelocityTracker != null) { 6127 mVelocityTracker.recycle(); 6128 mVelocityTracker = null; 6129 } 6130 6131 if ((mTouchMode == TOUCH_DRAG_MODE 6132 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6133 WebViewCore.resumePriority(); 6134 WebViewCore.resumeUpdatePicture(mWebViewCore); 6135 } 6136 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6137 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6138 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6139 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6140 if (getSettings().supportTouchOnly()) { 6141 removeTouchHighlight(true); 6142 } 6143 mHeldMotionless = MOTIONLESS_TRUE; 6144 mTouchMode = TOUCH_DONE_MODE; 6145 nativeHideCursor(); 6146 } 6147 6148 @Override 6149 public boolean onGenericMotionEvent(MotionEvent event) { 6150 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6151 switch (event.getAction()) { 6152 case MotionEvent.ACTION_SCROLL: { 6153 final float vscroll; 6154 final float hscroll; 6155 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6156 vscroll = 0; 6157 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6158 } else { 6159 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6160 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6161 } 6162 if (hscroll != 0 || vscroll != 0) { 6163 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6164 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6165 if (pinScrollBy(hdelta, vdelta, true, 0)) { 6166 return true; 6167 } 6168 } 6169 } 6170 } 6171 } 6172 return super.onGenericMotionEvent(event); 6173 } 6174 6175 private long mTrackballFirstTime = 0; 6176 private long mTrackballLastTime = 0; 6177 private float mTrackballRemainsX = 0.0f; 6178 private float mTrackballRemainsY = 0.0f; 6179 private int mTrackballXMove = 0; 6180 private int mTrackballYMove = 0; 6181 private boolean mSelectingText = false; 6182 private boolean mSelectionStarted = false; 6183 private boolean mExtendSelection = false; 6184 private boolean mDrawSelectionPointer = false; 6185 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6186 private static final int TRACKBALL_TIMEOUT = 200; 6187 private static final int TRACKBALL_WAIT = 100; 6188 private static final int TRACKBALL_SCALE = 400; 6189 private static final int TRACKBALL_SCROLL_COUNT = 5; 6190 private static final int TRACKBALL_MOVE_COUNT = 10; 6191 private static final int TRACKBALL_MULTIPLIER = 3; 6192 private static final int SELECT_CURSOR_OFFSET = 16; 6193 private static final int SELECT_SCROLL = 5; 6194 private int mSelectX = 0; 6195 private int mSelectY = 0; 6196 private boolean mFocusSizeChanged = false; 6197 private boolean mTrackballDown = false; 6198 private long mTrackballUpTime = 0; 6199 private long mLastCursorTime = 0; 6200 private Rect mLastCursorBounds; 6201 6202 // Set by default; BrowserActivity clears to interpret trackball data 6203 // directly for movement. Currently, the framework only passes 6204 // arrow key events, not trackball events, from one child to the next 6205 private boolean mMapTrackballToArrowKeys = true; 6206 6207 public void setMapTrackballToArrowKeys(boolean setMap) { 6208 mMapTrackballToArrowKeys = setMap; 6209 } 6210 6211 void resetTrackballTime() { 6212 mTrackballLastTime = 0; 6213 } 6214 6215 @Override 6216 public boolean onTrackballEvent(MotionEvent ev) { 6217 long time = ev.getEventTime(); 6218 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6219 if (ev.getY() > 0) pageDown(true); 6220 if (ev.getY() < 0) pageUp(true); 6221 return true; 6222 } 6223 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6224 if (mSelectingText) { 6225 return true; // discard press if copy in progress 6226 } 6227 mTrackballDown = true; 6228 if (mNativeClass == 0) { 6229 return false; 6230 } 6231 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6232 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6233 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6234 nativeSelectBestAt(mLastCursorBounds); 6235 } 6236 if (DebugFlags.WEB_VIEW) { 6237 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6238 + " time=" + time 6239 + " mLastCursorTime=" + mLastCursorTime); 6240 } 6241 if (isInTouchMode()) requestFocusFromTouch(); 6242 return false; // let common code in onKeyDown at it 6243 } 6244 if (ev.getAction() == MotionEvent.ACTION_UP) { 6245 // LONG_PRESS_CENTER is set in common onKeyDown 6246 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6247 mTrackballDown = false; 6248 mTrackballUpTime = time; 6249 if (mSelectingText) { 6250 if (mExtendSelection) { 6251 copySelection(); 6252 selectionDone(); 6253 } else { 6254 mExtendSelection = true; 6255 nativeSetExtendSelection(); 6256 invalidate(); // draw the i-beam instead of the arrow 6257 } 6258 return true; // discard press if copy in progress 6259 } 6260 if (DebugFlags.WEB_VIEW) { 6261 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6262 + " time=" + time 6263 ); 6264 } 6265 return false; // let common code in onKeyUp at it 6266 } 6267 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6268 AccessibilityManager.getInstance(mContext).isEnabled()) { 6269 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6270 return false; 6271 } 6272 if (mTrackballDown) { 6273 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6274 return true; // discard move if trackball is down 6275 } 6276 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6277 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6278 return true; 6279 } 6280 // TODO: alternatively we can do panning as touch does 6281 switchOutDrawHistory(); 6282 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6283 if (DebugFlags.WEB_VIEW) { 6284 Log.v(LOGTAG, "onTrackballEvent time=" 6285 + time + " last=" + mTrackballLastTime); 6286 } 6287 mTrackballFirstTime = time; 6288 mTrackballXMove = mTrackballYMove = 0; 6289 } 6290 mTrackballLastTime = time; 6291 if (DebugFlags.WEB_VIEW) { 6292 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6293 } 6294 mTrackballRemainsX += ev.getX(); 6295 mTrackballRemainsY += ev.getY(); 6296 doTrackball(time, ev.getMetaState()); 6297 return true; 6298 } 6299 6300 void moveSelection(float xRate, float yRate) { 6301 if (mNativeClass == 0) 6302 return; 6303 int width = getViewWidth(); 6304 int height = getViewHeight(); 6305 mSelectX += xRate; 6306 mSelectY += yRate; 6307 int maxX = width + mScrollX; 6308 int maxY = height + mScrollY; 6309 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6310 , mSelectX)); 6311 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6312 , mSelectY)); 6313 if (DebugFlags.WEB_VIEW) { 6314 Log.v(LOGTAG, "moveSelection" 6315 + " mSelectX=" + mSelectX 6316 + " mSelectY=" + mSelectY 6317 + " mScrollX=" + mScrollX 6318 + " mScrollY=" + mScrollY 6319 + " xRate=" + xRate 6320 + " yRate=" + yRate 6321 ); 6322 } 6323 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6324 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6325 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6326 : 0; 6327 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6328 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6329 : 0; 6330 pinScrollBy(scrollX, scrollY, true, 0); 6331 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6332 requestRectangleOnScreen(select); 6333 invalidate(); 6334 } 6335 6336 private int scaleTrackballX(float xRate, int width) { 6337 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6338 int nextXMove = xMove; 6339 if (xMove > 0) { 6340 if (xMove > mTrackballXMove) { 6341 xMove -= mTrackballXMove; 6342 } 6343 } else if (xMove < mTrackballXMove) { 6344 xMove -= mTrackballXMove; 6345 } 6346 mTrackballXMove = nextXMove; 6347 return xMove; 6348 } 6349 6350 private int scaleTrackballY(float yRate, int height) { 6351 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6352 int nextYMove = yMove; 6353 if (yMove > 0) { 6354 if (yMove > mTrackballYMove) { 6355 yMove -= mTrackballYMove; 6356 } 6357 } else if (yMove < mTrackballYMove) { 6358 yMove -= mTrackballYMove; 6359 } 6360 mTrackballYMove = nextYMove; 6361 return yMove; 6362 } 6363 6364 private int keyCodeToSoundsEffect(int keyCode) { 6365 switch(keyCode) { 6366 case KeyEvent.KEYCODE_DPAD_UP: 6367 return SoundEffectConstants.NAVIGATION_UP; 6368 case KeyEvent.KEYCODE_DPAD_RIGHT: 6369 return SoundEffectConstants.NAVIGATION_RIGHT; 6370 case KeyEvent.KEYCODE_DPAD_DOWN: 6371 return SoundEffectConstants.NAVIGATION_DOWN; 6372 case KeyEvent.KEYCODE_DPAD_LEFT: 6373 return SoundEffectConstants.NAVIGATION_LEFT; 6374 } 6375 throw new IllegalArgumentException("keyCode must be one of " + 6376 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6377 "KEYCODE_DPAD_LEFT}."); 6378 } 6379 6380 private void doTrackball(long time, int metaState) { 6381 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6382 if (elapsed == 0) { 6383 elapsed = TRACKBALL_TIMEOUT; 6384 } 6385 float xRate = mTrackballRemainsX * 1000 / elapsed; 6386 float yRate = mTrackballRemainsY * 1000 / elapsed; 6387 int viewWidth = getViewWidth(); 6388 int viewHeight = getViewHeight(); 6389 if (mSelectingText) { 6390 if (!mDrawSelectionPointer) { 6391 // The last selection was made by touch, disabling drawing the 6392 // selection pointer. Allow the trackball to adjust the 6393 // position of the touch control. 6394 mSelectX = contentToViewX(nativeSelectionX()); 6395 mSelectY = contentToViewY(nativeSelectionY()); 6396 mDrawSelectionPointer = mExtendSelection = true; 6397 nativeSetExtendSelection(); 6398 } 6399 moveSelection(scaleTrackballX(xRate, viewWidth), 6400 scaleTrackballY(yRate, viewHeight)); 6401 mTrackballRemainsX = mTrackballRemainsY = 0; 6402 return; 6403 } 6404 float ax = Math.abs(xRate); 6405 float ay = Math.abs(yRate); 6406 float maxA = Math.max(ax, ay); 6407 if (DebugFlags.WEB_VIEW) { 6408 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6409 + " xRate=" + xRate 6410 + " yRate=" + yRate 6411 + " mTrackballRemainsX=" + mTrackballRemainsX 6412 + " mTrackballRemainsY=" + mTrackballRemainsY); 6413 } 6414 int width = mContentWidth - viewWidth; 6415 int height = mContentHeight - viewHeight; 6416 if (width < 0) width = 0; 6417 if (height < 0) height = 0; 6418 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6419 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6420 maxA = Math.max(ax, ay); 6421 int count = Math.max(0, (int) maxA); 6422 int oldScrollX = mScrollX; 6423 int oldScrollY = mScrollY; 6424 if (count > 0) { 6425 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6426 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6427 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6428 KeyEvent.KEYCODE_DPAD_RIGHT; 6429 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6430 if (DebugFlags.WEB_VIEW) { 6431 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6432 + " count=" + count 6433 + " mTrackballRemainsX=" + mTrackballRemainsX 6434 + " mTrackballRemainsY=" + mTrackballRemainsY); 6435 } 6436 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6437 for (int i = 0; i < count; i++) { 6438 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6439 } 6440 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6441 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6442 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6443 } 6444 mTrackballRemainsX = mTrackballRemainsY = 0; 6445 } 6446 if (count >= TRACKBALL_SCROLL_COUNT) { 6447 int xMove = scaleTrackballX(xRate, width); 6448 int yMove = scaleTrackballY(yRate, height); 6449 if (DebugFlags.WEB_VIEW) { 6450 Log.v(LOGTAG, "doTrackball pinScrollBy" 6451 + " count=" + count 6452 + " xMove=" + xMove + " yMove=" + yMove 6453 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6454 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6455 ); 6456 } 6457 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6458 xMove = 0; 6459 } 6460 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6461 yMove = 0; 6462 } 6463 if (xMove != 0 || yMove != 0) { 6464 pinScrollBy(xMove, yMove, true, 0); 6465 } 6466 } 6467 } 6468 6469 /** 6470 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6471 * @return Maximum horizontal scroll position within real content 6472 */ 6473 int computeMaxScrollX() { 6474 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6475 } 6476 6477 /** 6478 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6479 * @return Maximum vertical scroll position within real content 6480 */ 6481 int computeMaxScrollY() { 6482 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6483 - getViewHeightWithTitle(), 0); 6484 } 6485 6486 boolean updateScrollCoordinates(int x, int y) { 6487 int oldX = mScrollX; 6488 int oldY = mScrollY; 6489 mScrollX = x; 6490 mScrollY = y; 6491 if (oldX != mScrollX || oldY != mScrollY) { 6492 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6493 return true; 6494 } else { 6495 return false; 6496 } 6497 } 6498 6499 public void flingScroll(int vx, int vy) { 6500 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6501 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6502 invalidate(); 6503 } 6504 6505 private void doFling() { 6506 if (mVelocityTracker == null) { 6507 return; 6508 } 6509 int maxX = computeMaxScrollX(); 6510 int maxY = computeMaxScrollY(); 6511 6512 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6513 int vx = (int) mVelocityTracker.getXVelocity(); 6514 int vy = (int) mVelocityTracker.getYVelocity(); 6515 6516 int scrollX = mScrollX; 6517 int scrollY = mScrollY; 6518 int overscrollDistance = mOverscrollDistance; 6519 int overflingDistance = mOverflingDistance; 6520 6521 // Use the layer's scroll data if applicable. 6522 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6523 scrollX = mScrollingLayerRect.left; 6524 scrollY = mScrollingLayerRect.top; 6525 maxX = mScrollingLayerRect.right; 6526 maxY = mScrollingLayerRect.bottom; 6527 // No overscrolling for layers. 6528 overscrollDistance = overflingDistance = 0; 6529 } 6530 6531 if (mSnapScrollMode != SNAP_NONE) { 6532 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6533 vy = 0; 6534 } else { 6535 vx = 0; 6536 } 6537 } 6538 if (true /* EMG release: make our fling more like Maps' */) { 6539 // maps cuts their velocity in half 6540 vx = vx * 3 / 4; 6541 vy = vy * 3 / 4; 6542 } 6543 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6544 WebViewCore.resumePriority(); 6545 if (!mSelectingText) { 6546 WebViewCore.resumeUpdatePicture(mWebViewCore); 6547 } 6548 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6549 invalidate(); 6550 } 6551 return; 6552 } 6553 float currentVelocity = mScroller.getCurrVelocity(); 6554 float velocity = (float) Math.hypot(vx, vy); 6555 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6556 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6557 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6558 - Math.atan2(vy, vx))); 6559 final float circle = (float) (Math.PI) * 2.0f; 6560 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6561 vx += currentVelocity * mLastVelX / mLastVelocity; 6562 vy += currentVelocity * mLastVelY / mLastVelocity; 6563 velocity = (float) Math.hypot(vx, vy); 6564 if (DebugFlags.WEB_VIEW) { 6565 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6566 } 6567 } else if (DebugFlags.WEB_VIEW) { 6568 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6569 } 6570 } else if (DebugFlags.WEB_VIEW) { 6571 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6572 + " current=" + currentVelocity 6573 + " vx=" + vx + " vy=" + vy 6574 + " maxX=" + maxX + " maxY=" + maxY 6575 + " scrollX=" + scrollX + " scrollY=" + scrollY 6576 + " layer=" + mScrollingLayer); 6577 } 6578 6579 // Allow sloppy flings without overscrolling at the edges. 6580 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6581 vx = 0; 6582 } 6583 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6584 vy = 0; 6585 } 6586 6587 if (overscrollDistance < overflingDistance) { 6588 if ((vx > 0 && scrollX == -overscrollDistance) || 6589 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6590 vx = 0; 6591 } 6592 if ((vy > 0 && scrollY == -overscrollDistance) || 6593 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6594 vy = 0; 6595 } 6596 } 6597 6598 mLastVelX = vx; 6599 mLastVelY = vy; 6600 mLastVelocity = velocity; 6601 6602 // no horizontal overscroll if the content just fits 6603 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6604 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6605 // Duration is calculated based on velocity. With range boundaries and overscroll 6606 // we may not know how long the final animation will take. (Hence the deprecation 6607 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6608 // resumes during this effect we will take a performance hit. See computeScroll; 6609 // we resume webcore there when the animation is finished. 6610 final int time = mScroller.getDuration(); 6611 6612 // Suppress scrollbars for layer scrolling. 6613 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6614 awakenScrollBars(time); 6615 } 6616 6617 invalidate(); 6618 } 6619 6620 /** 6621 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6622 * in charge of installing this view to the view hierarchy. This view will 6623 * become visible when the user starts scrolling via touch and fade away if 6624 * the user does not interact with it. 6625 * <p/> 6626 * API version 3 introduces a built-in zoom mechanism that is shown 6627 * automatically by the MapView. This is the preferred approach for 6628 * showing the zoom UI. 6629 * 6630 * @deprecated The built-in zoom mechanism is preferred, see 6631 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6632 */ 6633 @Deprecated 6634 public View getZoomControls() { 6635 if (!getSettings().supportZoom()) { 6636 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6637 return null; 6638 } 6639 return mZoomManager.getExternalZoomPicker(); 6640 } 6641 6642 void dismissZoomControl() { 6643 mZoomManager.dismissZoomPicker(); 6644 } 6645 6646 float getDefaultZoomScale() { 6647 return mZoomManager.getDefaultScale(); 6648 } 6649 6650 /** 6651 * @return TRUE if the WebView can be zoomed in. 6652 */ 6653 public boolean canZoomIn() { 6654 return mZoomManager.canZoomIn(); 6655 } 6656 6657 /** 6658 * @return TRUE if the WebView can be zoomed out. 6659 */ 6660 public boolean canZoomOut() { 6661 return mZoomManager.canZoomOut(); 6662 } 6663 6664 /** 6665 * Perform zoom in in the webview 6666 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6667 */ 6668 public boolean zoomIn() { 6669 return mZoomManager.zoomIn(); 6670 } 6671 6672 /** 6673 * Perform zoom out in the webview 6674 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6675 */ 6676 public boolean zoomOut() { 6677 return mZoomManager.zoomOut(); 6678 } 6679 6680 private void updateSelection() { 6681 if (mNativeClass == 0) { 6682 return; 6683 } 6684 // mLastTouchX and mLastTouchY are the point in the current viewport 6685 int contentX = viewToContentX(mLastTouchX + mScrollX); 6686 int contentY = viewToContentY(mLastTouchY + mScrollY); 6687 int slop = viewToContentDimension(mNavSlop); 6688 Rect rect = new Rect(contentX - slop, contentY - slop, 6689 contentX + slop, contentY + slop); 6690 nativeSelectBestAt(rect); 6691 mInitialHitTestResult = hitTestResult(null); 6692 } 6693 6694 /** 6695 * Scroll the focused text field to match the WebTextView 6696 * @param xPercent New x position of the WebTextView from 0 to 1. 6697 */ 6698 /*package*/ void scrollFocusedTextInputX(float xPercent) { 6699 if (!inEditingMode() || mWebViewCore == null) { 6700 return; 6701 } 6702 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 6703 new Float(xPercent)); 6704 } 6705 6706 /** 6707 * Scroll the focused textarea vertically to match the WebTextView 6708 * @param y New y position of the WebTextView in view coordinates 6709 */ 6710 /* package */ void scrollFocusedTextInputY(int y) { 6711 if (!inEditingMode() || mWebViewCore == null) { 6712 return; 6713 } 6714 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 6715 } 6716 6717 /** 6718 * Set our starting point and time for a drag from the WebTextView. 6719 */ 6720 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6721 if (!inEditingMode()) { 6722 return; 6723 } 6724 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 6725 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 6726 mLastTouchTime = eventTime; 6727 if (!mScroller.isFinished()) { 6728 abortAnimation(); 6729 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6730 } 6731 mSnapScrollMode = SNAP_NONE; 6732 mVelocityTracker = VelocityTracker.obtain(); 6733 mTouchMode = TOUCH_DRAG_START_MODE; 6734 } 6735 6736 /** 6737 * Given a motion event from the WebTextView, set its location to our 6738 * coordinates, and handle the event. 6739 */ 6740 /*package*/ boolean textFieldDrag(MotionEvent event) { 6741 if (!inEditingMode()) { 6742 return false; 6743 } 6744 mDragFromTextInput = true; 6745 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6746 (float) (mWebTextView.getTop() - mScrollY)); 6747 boolean result = onTouchEvent(event); 6748 mDragFromTextInput = false; 6749 return result; 6750 } 6751 6752 /** 6753 * Due a touch up from a WebTextView. This will be handled by webkit to 6754 * change the selection. 6755 * @param event MotionEvent in the WebTextView's coordinates. 6756 */ 6757 /*package*/ void touchUpOnTextField(MotionEvent event) { 6758 if (!inEditingMode()) { 6759 return; 6760 } 6761 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6762 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6763 int slop = viewToContentDimension(mNavSlop); 6764 nativeMotionUp(x, y, slop); 6765 } 6766 6767 /** 6768 * Called when pressing the center key or trackball on a textfield. 6769 */ 6770 /*package*/ void centerKeyPressOnTextField() { 6771 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6772 nativeCursorNodePointer()); 6773 } 6774 6775 private void doShortPress() { 6776 if (mNativeClass == 0) { 6777 return; 6778 } 6779 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6780 return; 6781 } 6782 mTouchMode = TOUCH_DONE_MODE; 6783 switchOutDrawHistory(); 6784 // mLastTouchX and mLastTouchY are the point in the current viewport 6785 int contentX = viewToContentX(mLastTouchX + mScrollX); 6786 int contentY = viewToContentY(mLastTouchY + mScrollY); 6787 int slop = viewToContentDimension(mNavSlop); 6788 if (getSettings().supportTouchOnly()) { 6789 removeTouchHighlight(false); 6790 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6791 // use "0" as generation id to inform WebKit to use the same x/y as 6792 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6793 touchUpData.mMoveGeneration = 0; 6794 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6795 } else if (nativePointInNavCache(contentX, contentY, slop)) { 6796 WebViewCore.MotionUpData motionUpData = new WebViewCore 6797 .MotionUpData(); 6798 motionUpData.mFrame = nativeCacheHitFramePointer(); 6799 motionUpData.mNode = nativeCacheHitNodePointer(); 6800 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6801 motionUpData.mX = contentX; 6802 motionUpData.mY = contentY; 6803 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6804 motionUpData); 6805 } else { 6806 doMotionUp(contentX, contentY); 6807 } 6808 } 6809 6810 private void doMotionUp(int contentX, int contentY) { 6811 int slop = viewToContentDimension(mNavSlop); 6812 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 6813 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6814 } 6815 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6816 playSoundEffect(SoundEffectConstants.CLICK); 6817 } 6818 } 6819 6820 /** 6821 * Returns plugin bounds if x/y in content coordinates corresponds to a 6822 * plugin. Otherwise a NULL rectangle is returned. 6823 */ 6824 Rect getPluginBounds(int x, int y) { 6825 int slop = viewToContentDimension(mNavSlop); 6826 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 6827 return nativeCacheHitNodeBounds(); 6828 } else { 6829 return null; 6830 } 6831 } 6832 6833 /* 6834 * Return true if the rect (e.g. plugin) is fully visible and maximized 6835 * inside the WebView. 6836 */ 6837 boolean isRectFitOnScreen(Rect rect) { 6838 final int rectWidth = rect.width(); 6839 final int rectHeight = rect.height(); 6840 final int viewWidth = getViewWidth(); 6841 final int viewHeight = getViewHeightWithTitle(); 6842 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 6843 scale = mZoomManager.computeScaleWithLimits(scale); 6844 return !mZoomManager.willScaleTriggerZoom(scale) 6845 && contentToViewX(rect.left) >= mScrollX 6846 && contentToViewX(rect.right) <= mScrollX + viewWidth 6847 && contentToViewY(rect.top) >= mScrollY 6848 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 6849 } 6850 6851 /* 6852 * Maximize and center the rectangle, specified in the document coordinate 6853 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6854 * animated scroll to center it. If the zoom needs to be changed, find the 6855 * zoom center and do a smooth zoom transition. The rect is in document 6856 * coordinates 6857 */ 6858 void centerFitRect(Rect rect) { 6859 final int rectWidth = rect.width(); 6860 final int rectHeight = rect.height(); 6861 final int viewWidth = getViewWidth(); 6862 final int viewHeight = getViewHeightWithTitle(); 6863 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 6864 / rectHeight); 6865 scale = mZoomManager.computeScaleWithLimits(scale); 6866 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6867 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 6868 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 6869 true, 0); 6870 } else { 6871 float actualScale = mZoomManager.getScale(); 6872 float oldScreenX = rect.left * actualScale - mScrollX; 6873 float rectViewX = rect.left * scale; 6874 float rectViewWidth = rectWidth * scale; 6875 float newMaxWidth = mContentWidth * scale; 6876 float newScreenX = (viewWidth - rectViewWidth) / 2; 6877 // pin the newX to the WebView 6878 if (newScreenX > rectViewX) { 6879 newScreenX = rectViewX; 6880 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6881 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6882 } 6883 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6884 / (scale - actualScale); 6885 float oldScreenY = rect.top * actualScale + getTitleHeight() 6886 - mScrollY; 6887 float rectViewY = rect.top * scale + getTitleHeight(); 6888 float rectViewHeight = rectHeight * scale; 6889 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6890 float newScreenY = (viewHeight - rectViewHeight) / 2; 6891 // pin the newY to the WebView 6892 if (newScreenY > rectViewY) { 6893 newScreenY = rectViewY; 6894 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6895 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6896 } 6897 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6898 / (scale - actualScale); 6899 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6900 mZoomManager.startZoomAnimation(scale, false); 6901 } 6902 } 6903 6904 // Called by JNI to handle a touch on a node representing an email address, 6905 // address, or phone number 6906 private void overrideLoading(String url) { 6907 mCallbackProxy.uiOverrideUrlLoading(url); 6908 } 6909 6910 @Override 6911 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6912 // FIXME: If a subwindow is showing find, and the user touches the 6913 // background window, it can steal focus. 6914 if (mFindIsUp) return false; 6915 boolean result = false; 6916 if (inEditingMode()) { 6917 result = mWebTextView.requestFocus(direction, 6918 previouslyFocusedRect); 6919 } else { 6920 result = super.requestFocus(direction, previouslyFocusedRect); 6921 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 6922 // For cases such as GMail, where we gain focus from a direction, 6923 // we want to move to the first available link. 6924 // FIXME: If there are no visible links, we may not want to 6925 int fakeKeyDirection = 0; 6926 switch(direction) { 6927 case View.FOCUS_UP: 6928 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6929 break; 6930 case View.FOCUS_DOWN: 6931 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6932 break; 6933 case View.FOCUS_LEFT: 6934 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6935 break; 6936 case View.FOCUS_RIGHT: 6937 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6938 break; 6939 default: 6940 return result; 6941 } 6942 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6943 navHandledKey(fakeKeyDirection, 1, true, 0); 6944 } 6945 } 6946 } 6947 return result; 6948 } 6949 6950 @Override 6951 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6952 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6953 6954 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6955 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6956 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6957 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6958 6959 int measuredHeight = heightSize; 6960 int measuredWidth = widthSize; 6961 6962 // Grab the content size from WebViewCore. 6963 int contentHeight = contentToViewDimension(mContentHeight); 6964 int contentWidth = contentToViewDimension(mContentWidth); 6965 6966// Log.d(LOGTAG, "------- measure " + heightMode); 6967 6968 if (heightMode != MeasureSpec.EXACTLY) { 6969 mHeightCanMeasure = true; 6970 measuredHeight = contentHeight; 6971 if (heightMode == MeasureSpec.AT_MOST) { 6972 // If we are larger than the AT_MOST height, then our height can 6973 // no longer be measured and we should scroll internally. 6974 if (measuredHeight > heightSize) { 6975 measuredHeight = heightSize; 6976 mHeightCanMeasure = false; 6977 } else if (measuredHeight < heightSize) { 6978 measuredHeight |= MEASURED_STATE_TOO_SMALL; 6979 } 6980 } 6981 } else { 6982 mHeightCanMeasure = false; 6983 } 6984 if (mNativeClass != 0) { 6985 nativeSetHeightCanMeasure(mHeightCanMeasure); 6986 } 6987 // For the width, always use the given size unless unspecified. 6988 if (widthMode == MeasureSpec.UNSPECIFIED) { 6989 mWidthCanMeasure = true; 6990 measuredWidth = contentWidth; 6991 } else { 6992 if (measuredWidth < contentWidth) { 6993 measuredWidth |= MEASURED_STATE_TOO_SMALL; 6994 } 6995 mWidthCanMeasure = false; 6996 } 6997 6998 synchronized (this) { 6999 setMeasuredDimension(measuredWidth, measuredHeight); 7000 } 7001 } 7002 7003 @Override 7004 public boolean requestChildRectangleOnScreen(View child, 7005 Rect rect, 7006 boolean immediate) { 7007 if (mNativeClass == 0) { 7008 return false; 7009 } 7010 // don't scroll while in zoom animation. When it is done, we will adjust 7011 // the necessary components (e.g., WebTextView if it is in editing mode) 7012 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7013 return false; 7014 } 7015 7016 rect.offset(child.getLeft() - child.getScrollX(), 7017 child.getTop() - child.getScrollY()); 7018 7019 Rect content = new Rect(viewToContentX(mScrollX), 7020 viewToContentY(mScrollY), 7021 viewToContentX(mScrollX + getWidth() 7022 - getVerticalScrollbarWidth()), 7023 viewToContentY(mScrollY + getViewHeightWithTitle())); 7024 content = nativeSubtractLayers(content); 7025 int screenTop = contentToViewY(content.top); 7026 int screenBottom = contentToViewY(content.bottom); 7027 int height = screenBottom - screenTop; 7028 int scrollYDelta = 0; 7029 7030 if (rect.bottom > screenBottom) { 7031 int oneThirdOfScreenHeight = height / 3; 7032 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7033 // If the rectangle is too tall to fit in the bottom two thirds 7034 // of the screen, place it at the top. 7035 scrollYDelta = rect.top - screenTop; 7036 } else { 7037 // If the rectangle will still fit on screen, we want its 7038 // top to be in the top third of the screen. 7039 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7040 } 7041 } else if (rect.top < screenTop) { 7042 scrollYDelta = rect.top - screenTop; 7043 } 7044 7045 int screenLeft = contentToViewX(content.left); 7046 int screenRight = contentToViewX(content.right); 7047 int width = screenRight - screenLeft; 7048 int scrollXDelta = 0; 7049 7050 if (rect.right > screenRight && rect.left > screenLeft) { 7051 if (rect.width() > width) { 7052 scrollXDelta += (rect.left - screenLeft); 7053 } else { 7054 scrollXDelta += (rect.right - screenRight); 7055 } 7056 } else if (rect.left < screenLeft) { 7057 scrollXDelta -= (screenLeft - rect.left); 7058 } 7059 7060 if ((scrollYDelta | scrollXDelta) != 0) { 7061 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7062 } 7063 7064 return false; 7065 } 7066 7067 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7068 String replace, int newStart, int newEnd) { 7069 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7070 arg.mReplace = replace; 7071 arg.mNewStart = newStart; 7072 arg.mNewEnd = newEnd; 7073 mTextGeneration++; 7074 arg.mTextGeneration = mTextGeneration; 7075 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7076 } 7077 7078 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7079 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7080 arg.mEvent = event; 7081 arg.mCurrentText = currentText; 7082 // Increase our text generation number, and pass it to webcore thread 7083 mTextGeneration++; 7084 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7085 // WebKit's document state is not saved until about to leave the page. 7086 // To make sure the host application, like Browser, has the up to date 7087 // document state when it goes to background, we force to save the 7088 // document state. 7089 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7090 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7091 cursorData(), 1000); 7092 } 7093 7094 /* package */ synchronized WebViewCore getWebViewCore() { 7095 return mWebViewCore; 7096 } 7097 7098 //------------------------------------------------------------------------- 7099 // Methods can be called from a separate thread, like WebViewCore 7100 // If it needs to call the View system, it has to send message. 7101 //------------------------------------------------------------------------- 7102 7103 /** 7104 * General handler to receive message coming from webkit thread 7105 */ 7106 class PrivateHandler extends Handler { 7107 @Override 7108 public void handleMessage(Message msg) { 7109 // exclude INVAL_RECT_MSG_ID since it is frequently output 7110 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 7111 if (msg.what >= FIRST_PRIVATE_MSG_ID 7112 && msg.what <= LAST_PRIVATE_MSG_ID) { 7113 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 7114 - FIRST_PRIVATE_MSG_ID]); 7115 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 7116 && msg.what <= LAST_PACKAGE_MSG_ID) { 7117 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 7118 - FIRST_PACKAGE_MSG_ID]); 7119 } else { 7120 Log.v(LOGTAG, Integer.toString(msg.what)); 7121 } 7122 } 7123 if (mWebViewCore == null) { 7124 // after WebView's destroy() is called, skip handling messages. 7125 return; 7126 } 7127 switch (msg.what) { 7128 case REMEMBER_PASSWORD: { 7129 mDatabase.setUsernamePassword( 7130 msg.getData().getString("host"), 7131 msg.getData().getString("username"), 7132 msg.getData().getString("password")); 7133 ((Message) msg.obj).sendToTarget(); 7134 break; 7135 } 7136 case NEVER_REMEMBER_PASSWORD: { 7137 mDatabase.setUsernamePassword( 7138 msg.getData().getString("host"), null, null); 7139 ((Message) msg.obj).sendToTarget(); 7140 break; 7141 } 7142 case PREVENT_DEFAULT_TIMEOUT: { 7143 // if timeout happens, cancel it so that it won't block UI 7144 // to continue handling touch events 7145 if ((msg.arg1 == MotionEvent.ACTION_DOWN 7146 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 7147 || (msg.arg1 == MotionEvent.ACTION_MOVE 7148 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 7149 cancelWebCoreTouchEvent( 7150 viewToContentX(mLastTouchX + mScrollX), 7151 viewToContentY(mLastTouchY + mScrollY), 7152 true); 7153 } 7154 break; 7155 } 7156 case SCROLL_SELECT_TEXT: { 7157 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 7158 mSentAutoScrollMessage = false; 7159 break; 7160 } 7161 if (mScrollingLayer == 0) { 7162 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 7163 } else { 7164 mScrollingLayerRect.left += mAutoScrollX; 7165 mScrollingLayerRect.top += mAutoScrollY; 7166 nativeScrollLayer(mScrollingLayer, 7167 mScrollingLayerRect.left, 7168 mScrollingLayerRect.top); 7169 invalidate(); 7170 } 7171 sendEmptyMessageDelayed( 7172 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 7173 break; 7174 } 7175 case SWITCH_TO_SHORTPRESS: { 7176 mInitialHitTestResult = null; // set by updateSelection() 7177 if (mTouchMode == TOUCH_INIT_MODE) { 7178 if (!getSettings().supportTouchOnly() 7179 && mPreventDefault != PREVENT_DEFAULT_YES) { 7180 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 7181 updateSelection(); 7182 } else { 7183 // set to TOUCH_SHORTPRESS_MODE so that it won't 7184 // trigger double tap any more 7185 mTouchMode = TOUCH_SHORTPRESS_MODE; 7186 } 7187 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 7188 mTouchMode = TOUCH_DONE_MODE; 7189 } 7190 break; 7191 } 7192 case SWITCH_TO_LONGPRESS: { 7193 if (getSettings().supportTouchOnly()) { 7194 removeTouchHighlight(false); 7195 } 7196 if (inFullScreenMode() || mDeferTouchProcess) { 7197 TouchEventData ted = new TouchEventData(); 7198 ted.mAction = WebViewCore.ACTION_LONGPRESS; 7199 ted.mIds = new int[1]; 7200 ted.mIds[0] = 0; 7201 ted.mPoints = new Point[1]; 7202 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 7203 viewToContentY(mLastTouchY + mScrollY)); 7204 // metaState for long press is tricky. Should it be the 7205 // state when the press started or when the press was 7206 // released? Or some intermediary key state? For 7207 // simplicity for now, we don't set it. 7208 ted.mMetaState = 0; 7209 ted.mReprocess = mDeferTouchProcess; 7210 ted.mNativeLayer = nativeScrollableLayer( 7211 ted.mPoints[0].x, ted.mPoints[0].y, 7212 ted.mNativeLayerRect, null); 7213 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7214 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 7215 mTouchMode = TOUCH_DONE_MODE; 7216 performLongClick(); 7217 } 7218 break; 7219 } 7220 case RELEASE_SINGLE_TAP: { 7221 doShortPress(); 7222 break; 7223 } 7224 case SCROLL_TO_MSG_ID: { 7225 // arg1 = animate, arg2 = onlyIfImeIsShowing 7226 // obj = Point(x, y) 7227 if (msg.arg2 == 1) { 7228 // This scroll is intended to bring the textfield into 7229 // view, but is only necessary if the IME is showing 7230 InputMethodManager imm = InputMethodManager.peekInstance(); 7231 if (imm == null || !imm.isAcceptingText() 7232 || (!imm.isActive(WebView.this) && (!inEditingMode() 7233 || !imm.isActive(mWebTextView)))) { 7234 break; 7235 } 7236 } 7237 final Point p = (Point) msg.obj; 7238 if (msg.arg1 == 1) { 7239 spawnContentScrollTo(p.x, p.y); 7240 } else { 7241 setContentScrollTo(p.x, p.y); 7242 } 7243 break; 7244 } 7245 case UPDATE_ZOOM_RANGE: { 7246 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 7247 // mScrollX contains the new minPrefWidth 7248 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 7249 break; 7250 } 7251 case REPLACE_BASE_CONTENT: { 7252 nativeReplaceBaseContent(msg.arg1); 7253 break; 7254 } 7255 case NEW_PICTURE_MSG_ID: { 7256 // called for new content 7257 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 7258 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion.getBounds(), 7259 getSettings().getShowVisualIndicator()); 7260 final Point viewSize = draw.mViewSize; 7261 WebViewCore.ViewState viewState = draw.mViewState; 7262 boolean isPictureAfterFirstLayout = viewState != null; 7263 if (isPictureAfterFirstLayout) { 7264 // Reset the last sent data here since dealing with new page. 7265 mLastWidthSent = 0; 7266 mZoomManager.onFirstLayout(draw); 7267 if (!mDrawHistory) { 7268 // Do not send the scroll event for this particular 7269 // scroll message. Note that a scroll event may 7270 // still be fired if the user scrolls before the 7271 // message can be handled. 7272 mSendScrollEvent = false; 7273 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 7274 mSendScrollEvent = true; 7275 7276 // As we are on a new page, remove the WebTextView. This 7277 // is necessary for page loads driven by webkit, and in 7278 // particular when the user was on a password field, so 7279 // the WebTextView was visible. 7280 clearTextEntry(); 7281 } 7282 } 7283 7284 // We update the layout (i.e. request a layout from the 7285 // view system) if the last view size that we sent to 7286 // WebCore matches the view size of the picture we just 7287 // received in the fixed dimension. 7288 final boolean updateLayout = viewSize.x == mLastWidthSent 7289 && viewSize.y == mLastHeightSent; 7290 // Don't send scroll event for picture coming from webkit, 7291 // since the new picture may cause a scroll event to override 7292 // the saved history scroll position. 7293 mSendScrollEvent = false; 7294 recordNewContentSize(draw.mContentSize.x, 7295 draw.mContentSize.y, updateLayout); 7296 mSendScrollEvent = true; 7297 if (DebugFlags.WEB_VIEW) { 7298 Rect b = draw.mInvalRegion.getBounds(); 7299 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 7300 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 7301 } 7302 invalidateContentRect(draw.mInvalRegion.getBounds()); 7303 7304 if (mPictureListener != null) { 7305 mPictureListener.onNewPicture(WebView.this, capturePicture()); 7306 } 7307 7308 // update the zoom information based on the new picture 7309 mZoomManager.onNewPicture(draw); 7310 7311 if (draw.mFocusSizeChanged && inEditingMode()) { 7312 mFocusSizeChanged = true; 7313 } 7314 if (isPictureAfterFirstLayout) { 7315 mViewManager.postReadyToDrawAll(); 7316 } 7317 break; 7318 } 7319 case WEBCORE_INITIALIZED_MSG_ID: 7320 // nativeCreate sets mNativeClass to a non-zero value 7321 nativeCreate(msg.arg1); 7322 break; 7323 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 7324 // Make sure that the textfield is currently focused 7325 // and representing the same node as the pointer. 7326 if (inEditingMode() && 7327 mWebTextView.isSameTextField(msg.arg1)) { 7328 if (msg.getData().getBoolean("password")) { 7329 Spannable text = (Spannable) mWebTextView.getText(); 7330 int start = Selection.getSelectionStart(text); 7331 int end = Selection.getSelectionEnd(text); 7332 mWebTextView.setInPassword(true); 7333 // Restore the selection, which may have been 7334 // ruined by setInPassword. 7335 Spannable pword = 7336 (Spannable) mWebTextView.getText(); 7337 Selection.setSelection(pword, start, end); 7338 // If the text entry has created more events, ignore 7339 // this one. 7340 } else if (msg.arg2 == mTextGeneration) { 7341 String text = (String) msg.obj; 7342 if (null == text) { 7343 text = ""; 7344 } 7345 mWebTextView.setTextAndKeepSelection(text); 7346 } 7347 } 7348 break; 7349 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 7350 displaySoftKeyboard(true); 7351 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 7352 case UPDATE_TEXT_SELECTION_MSG_ID: 7353 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 7354 (WebViewCore.TextSelectionData) msg.obj); 7355 break; 7356 case FORM_DID_BLUR: 7357 if (inEditingMode() 7358 && mWebTextView.isSameTextField(msg.arg1)) { 7359 hideSoftKeyboard(); 7360 } 7361 break; 7362 case RETURN_LABEL: 7363 if (inEditingMode() 7364 && mWebTextView.isSameTextField(msg.arg1)) { 7365 mWebTextView.setHint((String) msg.obj); 7366 InputMethodManager imm 7367 = InputMethodManager.peekInstance(); 7368 // The hint is propagated to the IME in 7369 // onCreateInputConnection. If the IME is already 7370 // active, restart it so that its hint text is updated. 7371 if (imm != null && imm.isActive(mWebTextView)) { 7372 imm.restartInput(mWebTextView); 7373 } 7374 } 7375 break; 7376 case UNHANDLED_NAV_KEY: 7377 navHandledKey(msg.arg1, 1, false, 0); 7378 break; 7379 case UPDATE_TEXT_ENTRY_MSG_ID: 7380 // this is sent after finishing resize in WebViewCore. Make 7381 // sure the text edit box is still on the screen. 7382 if (inEditingMode() && nativeCursorIsTextInput()) { 7383 rebuildWebTextView(); 7384 } 7385 break; 7386 case CLEAR_TEXT_ENTRY: 7387 clearTextEntry(); 7388 break; 7389 case INVAL_RECT_MSG_ID: { 7390 Rect r = (Rect)msg.obj; 7391 if (r == null) { 7392 invalidate(); 7393 } else { 7394 // we need to scale r from content into view coords, 7395 // which viewInvalidate() does for us 7396 viewInvalidate(r.left, r.top, r.right, r.bottom); 7397 } 7398 break; 7399 } 7400 case REQUEST_FORM_DATA: 7401 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7402 if (mWebTextView.isSameTextField(msg.arg1)) { 7403 mWebTextView.setAdapterCustom(adapter); 7404 } 7405 break; 7406 case RESUME_WEBCORE_PRIORITY: 7407 WebViewCore.resumePriority(); 7408 WebViewCore.resumeUpdatePicture(mWebViewCore); 7409 break; 7410 7411 case LONG_PRESS_CENTER: 7412 // as this is shared by keydown and trackballdown, reset all 7413 // the states 7414 mGotCenterDown = false; 7415 mTrackballDown = false; 7416 performLongClick(); 7417 break; 7418 7419 case WEBCORE_NEED_TOUCH_EVENTS: 7420 mForwardTouchEvents = (msg.arg1 != 0); 7421 break; 7422 7423 case PREVENT_TOUCH_ID: 7424 if (inFullScreenMode()) { 7425 break; 7426 } 7427 if (msg.obj == null) { 7428 if (msg.arg1 == MotionEvent.ACTION_DOWN 7429 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7430 // if prevent default is called from WebCore, UI 7431 // will not handle the rest of the touch events any 7432 // more. 7433 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7434 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7435 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 7436 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7437 // the return for the first ACTION_MOVE will decide 7438 // whether UI will handle touch or not. Currently no 7439 // support for alternating prevent default 7440 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7441 : PREVENT_DEFAULT_NO; 7442 } 7443 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7444 mTouchHighlightRegion.setEmpty(); 7445 } 7446 } else { 7447 TouchEventData ted = (TouchEventData) msg.obj; 7448 7449 if (ted.mPoints.length > 1) { // multi-touch 7450 if (ted.mAction == MotionEvent.ACTION_POINTER_UP) { 7451 mIsHandlingMultiTouch = false; 7452 } 7453 if (msg.arg2 == 0) { 7454 mPreventDefault = PREVENT_DEFAULT_NO; 7455 handleMultiTouchInWebView(ted.mMotionEvent); 7456 } else { 7457 mPreventDefault = PREVENT_DEFAULT_YES; 7458 } 7459 break; 7460 } 7461 7462 // prevent default is not called in WebCore, so the 7463 // message needs to be reprocessed in UI 7464 if (msg.arg2 == 0) { 7465 // Following is for single touch. 7466 switch (ted.mAction) { 7467 case MotionEvent.ACTION_DOWN: 7468 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 7469 - mScrollX; 7470 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 7471 - mScrollY; 7472 mDeferTouchMode = TOUCH_INIT_MODE; 7473 break; 7474 case MotionEvent.ACTION_MOVE: { 7475 // no snapping in defer process 7476 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 7477 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 7478 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7479 mDeferTouchMode = TOUCH_DRAG_MODE; 7480 mLastDeferTouchX = x; 7481 mLastDeferTouchY = y; 7482 startScrollingLayer(x, y); 7483 startDrag(); 7484 } 7485 int deltaX = pinLocX((int) (mScrollX 7486 + mLastDeferTouchX - x)) 7487 - mScrollX; 7488 int deltaY = pinLocY((int) (mScrollY 7489 + mLastDeferTouchY - y)) 7490 - mScrollY; 7491 doDrag(deltaX, deltaY); 7492 if (deltaX != 0) mLastDeferTouchX = x; 7493 if (deltaY != 0) mLastDeferTouchY = y; 7494 break; 7495 } 7496 case MotionEvent.ACTION_UP: 7497 case MotionEvent.ACTION_CANCEL: 7498 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7499 // no fling in defer process 7500 mScroller.springBack(mScrollX, mScrollY, 0, 7501 computeMaxScrollX(), 0, 7502 computeMaxScrollY()); 7503 invalidate(); 7504 WebViewCore.resumePriority(); 7505 WebViewCore.resumeUpdatePicture(mWebViewCore); 7506 } 7507 mDeferTouchMode = TOUCH_DONE_MODE; 7508 break; 7509 case WebViewCore.ACTION_DOUBLETAP: 7510 // doDoubleTap() needs mLastTouchX/Y as anchor 7511 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 7512 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 7513 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7514 mDeferTouchMode = TOUCH_DONE_MODE; 7515 break; 7516 case WebViewCore.ACTION_LONGPRESS: 7517 HitTestResult hitTest = getHitTestResult(); 7518 if (hitTest != null && hitTest.mType 7519 != HitTestResult.UNKNOWN_TYPE) { 7520 performLongClick(); 7521 } 7522 mDeferTouchMode = TOUCH_DONE_MODE; 7523 break; 7524 } 7525 } 7526 } 7527 break; 7528 7529 case REQUEST_KEYBOARD: 7530 if (msg.arg1 == 0) { 7531 hideSoftKeyboard(); 7532 } else { 7533 displaySoftKeyboard(false); 7534 } 7535 break; 7536 7537 case FIND_AGAIN: 7538 // Ignore if find has been dismissed. 7539 if (mFindIsUp && mFindCallback != null) { 7540 mFindCallback.findAll(); 7541 } 7542 break; 7543 7544 case DRAG_HELD_MOTIONLESS: 7545 mHeldMotionless = MOTIONLESS_TRUE; 7546 invalidate(); 7547 // fall through to keep scrollbars awake 7548 7549 case AWAKEN_SCROLL_BARS: 7550 if (mTouchMode == TOUCH_DRAG_MODE 7551 && mHeldMotionless == MOTIONLESS_TRUE) { 7552 awakenScrollBars(ViewConfiguration 7553 .getScrollDefaultDelay(), false); 7554 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7555 .obtainMessage(AWAKEN_SCROLL_BARS), 7556 ViewConfiguration.getScrollDefaultDelay()); 7557 } 7558 break; 7559 7560 case DO_MOTION_UP: 7561 doMotionUp(msg.arg1, msg.arg2); 7562 break; 7563 7564 case SCREEN_ON: 7565 setKeepScreenOn(msg.arg1 == 1); 7566 break; 7567 7568 case SHOW_FULLSCREEN: { 7569 View view = (View) msg.obj; 7570 int npp = msg.arg1; 7571 7572 if (inFullScreenMode()) { 7573 Log.w(LOGTAG, "Should not have another full screen."); 7574 dismissFullScreenMode(); 7575 } 7576 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7577 mFullScreenHolder.setContentView(view); 7578 mFullScreenHolder.setCancelable(false); 7579 mFullScreenHolder.setCanceledOnTouchOutside(false); 7580 mFullScreenHolder.show(); 7581 7582 break; 7583 } 7584 case HIDE_FULLSCREEN: 7585 dismissFullScreenMode(); 7586 break; 7587 7588 case DOM_FOCUS_CHANGED: 7589 if (inEditingMode()) { 7590 nativeClearCursor(); 7591 rebuildWebTextView(); 7592 } 7593 break; 7594 7595 case SHOW_RECT_MSG_ID: { 7596 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7597 int x = mScrollX; 7598 int left = contentToViewX(data.mLeft); 7599 int width = contentToViewDimension(data.mWidth); 7600 int maxWidth = contentToViewDimension(data.mContentWidth); 7601 int viewWidth = getViewWidth(); 7602 if (width < viewWidth) { 7603 // center align 7604 x += left + width / 2 - mScrollX - viewWidth / 2; 7605 } else { 7606 x += (int) (left + data.mXPercentInDoc * width 7607 - mScrollX - data.mXPercentInView * viewWidth); 7608 } 7609 if (DebugFlags.WEB_VIEW) { 7610 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7611 width + ",maxWidth=" + maxWidth + 7612 ",viewWidth=" + viewWidth + ",x=" 7613 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7614 ",xPercentInView=" + data.mXPercentInView+ ")"); 7615 } 7616 // use the passing content width to cap x as the current 7617 // mContentWidth may not be updated yet 7618 x = Math.max(0, 7619 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7620 int top = contentToViewY(data.mTop); 7621 int height = contentToViewDimension(data.mHeight); 7622 int maxHeight = contentToViewDimension(data.mContentHeight); 7623 int viewHeight = getViewHeight(); 7624 int y = (int) (top + data.mYPercentInDoc * height - 7625 data.mYPercentInView * viewHeight); 7626 if (DebugFlags.WEB_VIEW) { 7627 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7628 height + ",maxHeight=" + maxHeight + 7629 ",viewHeight=" + viewHeight + ",y=" 7630 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7631 ",yPercentInView=" + data.mYPercentInView+ ")"); 7632 } 7633 // use the passing content height to cap y as the current 7634 // mContentHeight may not be updated yet 7635 y = Math.max(0, 7636 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7637 // We need to take into account the visible title height 7638 // when scrolling since y is an absolute view position. 7639 y = Math.max(0, y - getVisibleTitleHeight()); 7640 scrollTo(x, y); 7641 } 7642 break; 7643 7644 case CENTER_FIT_RECT: 7645 centerFitRect((Rect)msg.obj); 7646 break; 7647 7648 case SET_SCROLLBAR_MODES: 7649 mHorizontalScrollBarMode = msg.arg1; 7650 mVerticalScrollBarMode = msg.arg2; 7651 break; 7652 7653 case SELECTION_STRING_CHANGED: 7654 if (mAccessibilityInjector != null) { 7655 String selectionString = (String) msg.obj; 7656 mAccessibilityInjector.onSelectionStringChange(selectionString); 7657 } 7658 break; 7659 7660 case SET_TOUCH_HIGHLIGHT_RECTS: 7661 invalidate(mTouchHighlightRegion.getBounds()); 7662 mTouchHighlightRegion.setEmpty(); 7663 if (msg.obj != null) { 7664 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 7665 for (Rect rect : rects) { 7666 Rect viewRect = contentToViewRect(rect); 7667 // some sites, like stories in nytimes.com, set 7668 // mouse event handler in the top div. It is not 7669 // user friendly to highlight the div if it covers 7670 // more than half of the screen. 7671 if (viewRect.width() < getWidth() >> 1 7672 || viewRect.height() < getHeight() >> 1) { 7673 mTouchHighlightRegion.union(viewRect); 7674 invalidate(viewRect); 7675 } else { 7676 Log.w(LOGTAG, "Skip the huge selection rect:" 7677 + viewRect); 7678 } 7679 } 7680 } 7681 break; 7682 7683 case SAVE_WEBARCHIVE_FINISHED: 7684 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7685 if (saveMessage.mCallback != null) { 7686 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7687 } 7688 break; 7689 7690 case SET_AUTOFILLABLE: 7691 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 7692 if (mWebTextView != null) { 7693 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 7694 rebuildWebTextView(); 7695 } 7696 break; 7697 7698 case AUTOFILL_COMPLETE: 7699 if (mWebTextView != null) { 7700 // Clear the WebTextView adapter when AutoFill finishes 7701 // so that the drop down gets cleared. 7702 mWebTextView.setAdapterCustom(null); 7703 } 7704 break; 7705 7706 case SELECT_AT: 7707 nativeSelectAt(msg.arg1, msg.arg2); 7708 break; 7709 7710 default: 7711 super.handleMessage(msg); 7712 break; 7713 } 7714 } 7715 } 7716 7717 /** 7718 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7719 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7720 */ 7721 private void updateTextSelectionFromMessage(int nodePointer, 7722 int textGeneration, WebViewCore.TextSelectionData data) { 7723 if (inEditingMode() 7724 && mWebTextView.isSameTextField(nodePointer) 7725 && textGeneration == mTextGeneration) { 7726 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7727 } 7728 } 7729 7730 // Class used to use a dropdown for a <select> element 7731 private class InvokeListBox implements Runnable { 7732 // Whether the listbox allows multiple selection. 7733 private boolean mMultiple; 7734 // Passed in to a list with multiple selection to tell 7735 // which items are selected. 7736 private int[] mSelectedArray; 7737 // Passed in to a list with single selection to tell 7738 // where the initial selection is. 7739 private int mSelection; 7740 7741 private Container[] mContainers; 7742 7743 // Need these to provide stable ids to my ArrayAdapter, 7744 // which normally does not have stable ids. (Bug 1250098) 7745 private class Container extends Object { 7746 /** 7747 * Possible values for mEnabled. Keep in sync with OptionStatus in 7748 * WebViewCore.cpp 7749 */ 7750 final static int OPTGROUP = -1; 7751 final static int OPTION_DISABLED = 0; 7752 final static int OPTION_ENABLED = 1; 7753 7754 String mString; 7755 int mEnabled; 7756 int mId; 7757 7758 @Override 7759 public String toString() { 7760 return mString; 7761 } 7762 } 7763 7764 /** 7765 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7766 * and allow filtering. 7767 */ 7768 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7769 public MyArrayListAdapter() { 7770 super(mContext, 7771 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 7772 com.android.internal.R.layout.webview_select_singlechoice, 7773 mContainers); 7774 } 7775 7776 @Override 7777 public View getView(int position, View convertView, 7778 ViewGroup parent) { 7779 // Always pass in null so that we will get a new CheckedTextView 7780 // Otherwise, an item which was previously used as an <optgroup> 7781 // element (i.e. has no check), could get used as an <option> 7782 // element, which needs a checkbox/radio, but it would not have 7783 // one. 7784 convertView = super.getView(position, null, parent); 7785 Container c = item(position); 7786 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7787 // ListView does not draw dividers between disabled and 7788 // enabled elements. Use a LinearLayout to provide dividers 7789 LinearLayout layout = new LinearLayout(mContext); 7790 layout.setOrientation(LinearLayout.VERTICAL); 7791 if (position > 0) { 7792 View dividerTop = new View(mContext); 7793 dividerTop.setBackgroundResource( 7794 android.R.drawable.divider_horizontal_bright); 7795 layout.addView(dividerTop); 7796 } 7797 7798 if (Container.OPTGROUP == c.mEnabled) { 7799 // Currently select_dialog_multichoice uses CheckedTextViews. 7800 // If that changes, the class cast will no longer be valid. 7801 if (mMultiple) { 7802 Assert.assertTrue(convertView instanceof CheckedTextView); 7803 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 7804 } 7805 } else { 7806 // c.mEnabled == Container.OPTION_DISABLED 7807 // Draw the disabled element in a disabled state. 7808 convertView.setEnabled(false); 7809 } 7810 7811 layout.addView(convertView); 7812 if (position < getCount() - 1) { 7813 View dividerBottom = new View(mContext); 7814 dividerBottom.setBackgroundResource( 7815 android.R.drawable.divider_horizontal_bright); 7816 layout.addView(dividerBottom); 7817 } 7818 return layout; 7819 } 7820 return convertView; 7821 } 7822 7823 @Override 7824 public boolean hasStableIds() { 7825 // AdapterView's onChanged method uses this to determine whether 7826 // to restore the old state. Return false so that the old (out 7827 // of date) state does not replace the new, valid state. 7828 return false; 7829 } 7830 7831 private Container item(int position) { 7832 if (position < 0 || position >= getCount()) { 7833 return null; 7834 } 7835 return (Container) getItem(position); 7836 } 7837 7838 @Override 7839 public long getItemId(int position) { 7840 Container item = item(position); 7841 if (item == null) { 7842 return -1; 7843 } 7844 return item.mId; 7845 } 7846 7847 @Override 7848 public boolean areAllItemsEnabled() { 7849 return false; 7850 } 7851 7852 @Override 7853 public boolean isEnabled(int position) { 7854 Container item = item(position); 7855 if (item == null) { 7856 return false; 7857 } 7858 return Container.OPTION_ENABLED == item.mEnabled; 7859 } 7860 } 7861 7862 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7863 mMultiple = true; 7864 mSelectedArray = selected; 7865 7866 int length = array.length; 7867 mContainers = new Container[length]; 7868 for (int i = 0; i < length; i++) { 7869 mContainers[i] = new Container(); 7870 mContainers[i].mString = array[i]; 7871 mContainers[i].mEnabled = enabled[i]; 7872 mContainers[i].mId = i; 7873 } 7874 } 7875 7876 private InvokeListBox(String[] array, int[] enabled, int selection) { 7877 mSelection = selection; 7878 mMultiple = false; 7879 7880 int length = array.length; 7881 mContainers = new Container[length]; 7882 for (int i = 0; i < length; i++) { 7883 mContainers[i] = new Container(); 7884 mContainers[i].mString = array[i]; 7885 mContainers[i].mEnabled = enabled[i]; 7886 mContainers[i].mId = i; 7887 } 7888 } 7889 7890 /* 7891 * Whenever the data set changes due to filtering, this class ensures 7892 * that the checked item remains checked. 7893 */ 7894 private class SingleDataSetObserver extends DataSetObserver { 7895 private long mCheckedId; 7896 private ListView mListView; 7897 private Adapter mAdapter; 7898 7899 /* 7900 * Create a new observer. 7901 * @param id The ID of the item to keep checked. 7902 * @param l ListView for getting and clearing the checked states 7903 * @param a Adapter for getting the IDs 7904 */ 7905 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7906 mCheckedId = id; 7907 mListView = l; 7908 mAdapter = a; 7909 } 7910 7911 @Override 7912 public void onChanged() { 7913 // The filter may have changed which item is checked. Find the 7914 // item that the ListView thinks is checked. 7915 int position = mListView.getCheckedItemPosition(); 7916 long id = mAdapter.getItemId(position); 7917 if (mCheckedId != id) { 7918 // Clear the ListView's idea of the checked item, since 7919 // it is incorrect 7920 mListView.clearChoices(); 7921 // Search for mCheckedId. If it is in the filtered list, 7922 // mark it as checked 7923 int count = mAdapter.getCount(); 7924 for (int i = 0; i < count; i++) { 7925 if (mAdapter.getItemId(i) == mCheckedId) { 7926 mListView.setItemChecked(i, true); 7927 break; 7928 } 7929 } 7930 } 7931 } 7932 } 7933 7934 public void run() { 7935 final ListView listView = (ListView) LayoutInflater.from(mContext) 7936 .inflate(com.android.internal.R.layout.select_dialog, null); 7937 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 7938 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7939 .setView(listView).setCancelable(true) 7940 .setInverseBackgroundForced(true); 7941 7942 if (mMultiple) { 7943 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7944 public void onClick(DialogInterface dialog, int which) { 7945 mWebViewCore.sendMessage( 7946 EventHub.LISTBOX_CHOICES, 7947 adapter.getCount(), 0, 7948 listView.getCheckedItemPositions()); 7949 }}); 7950 b.setNegativeButton(android.R.string.cancel, 7951 new DialogInterface.OnClickListener() { 7952 public void onClick(DialogInterface dialog, int which) { 7953 mWebViewCore.sendMessage( 7954 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7955 }}); 7956 } 7957 mListBoxDialog = b.create(); 7958 listView.setAdapter(adapter); 7959 listView.setFocusableInTouchMode(true); 7960 // There is a bug (1250103) where the checks in a ListView with 7961 // multiple items selected are associated with the positions, not 7962 // the ids, so the items do not properly retain their checks when 7963 // filtered. Do not allow filtering on multiple lists until 7964 // that bug is fixed. 7965 7966 listView.setTextFilterEnabled(!mMultiple); 7967 if (mMultiple) { 7968 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7969 int length = mSelectedArray.length; 7970 for (int i = 0; i < length; i++) { 7971 listView.setItemChecked(mSelectedArray[i], true); 7972 } 7973 } else { 7974 listView.setOnItemClickListener(new OnItemClickListener() { 7975 public void onItemClick(AdapterView<?> parent, View v, 7976 int position, long id) { 7977 // Rather than sending the message right away, send it 7978 // after the page regains focus. 7979 mListBoxMessage = Message.obtain(null, 7980 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 7981 mListBoxDialog.dismiss(); 7982 mListBoxDialog = null; 7983 } 7984 }); 7985 if (mSelection != -1) { 7986 listView.setSelection(mSelection); 7987 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7988 listView.setItemChecked(mSelection, true); 7989 DataSetObserver observer = new SingleDataSetObserver( 7990 adapter.getItemId(mSelection), listView, adapter); 7991 adapter.registerDataSetObserver(observer); 7992 } 7993 } 7994 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7995 public void onCancel(DialogInterface dialog) { 7996 mWebViewCore.sendMessage( 7997 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7998 mListBoxDialog = null; 7999 } 8000 }); 8001 mListBoxDialog.show(); 8002 } 8003 } 8004 8005 private Message mListBoxMessage; 8006 8007 /* 8008 * Request a dropdown menu for a listbox with multiple selection. 8009 * 8010 * @param array Labels for the listbox. 8011 * @param enabledArray State for each element in the list. See static 8012 * integers in Container class. 8013 * @param selectedArray Which positions are initally selected. 8014 */ 8015 void requestListBox(String[] array, int[] enabledArray, int[] 8016 selectedArray) { 8017 mPrivateHandler.post( 8018 new InvokeListBox(array, enabledArray, selectedArray)); 8019 } 8020 8021 /* 8022 * Request a dropdown menu for a listbox with single selection or a single 8023 * <select> element. 8024 * 8025 * @param array Labels for the listbox. 8026 * @param enabledArray State for each element in the list. See static 8027 * integers in Container class. 8028 * @param selection Which position is initally selected. 8029 */ 8030 void requestListBox(String[] array, int[] enabledArray, int selection) { 8031 mPrivateHandler.post( 8032 new InvokeListBox(array, enabledArray, selection)); 8033 } 8034 8035 // called by JNI 8036 private void sendMoveFocus(int frame, int node) { 8037 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 8038 new WebViewCore.CursorData(frame, node, 0, 0)); 8039 } 8040 8041 // called by JNI 8042 private void sendMoveMouse(int frame, int node, int x, int y) { 8043 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 8044 new WebViewCore.CursorData(frame, node, x, y)); 8045 } 8046 8047 /* 8048 * Send a mouse move event to the webcore thread. 8049 * 8050 * @param removeFocus Pass true to remove the WebTextView, if present. 8051 * @param stopPaintingCaret Stop drawing the blinking caret if true. 8052 * called by JNI 8053 */ 8054 @SuppressWarnings("unused") 8055 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 8056 if (removeFocus) { 8057 clearTextEntry(); 8058 } 8059 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 8060 stopPaintingCaret ? 1 : 0, 0, 8061 cursorData()); 8062 } 8063 8064 /** 8065 * Called by JNI to send a message to the webcore thread that the user 8066 * touched the webpage. 8067 * @param touchGeneration Generation number of the touch, to ignore touches 8068 * after a new one has been generated. 8069 * @param frame Pointer to the frame holding the node that was touched. 8070 * @param node Pointer to the node touched. 8071 * @param x x-position of the touch. 8072 * @param y y-position of the touch. 8073 */ 8074 private void sendMotionUp(int touchGeneration, 8075 int frame, int node, int x, int y) { 8076 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 8077 touchUpData.mMoveGeneration = touchGeneration; 8078 touchUpData.mFrame = frame; 8079 touchUpData.mNode = node; 8080 touchUpData.mX = x; 8081 touchUpData.mY = y; 8082 touchUpData.mNativeLayer = nativeScrollableLayer( 8083 x, y, touchUpData.mNativeLayerRect, null); 8084 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 8085 } 8086 8087 8088 private int getScaledMaxXScroll() { 8089 int width; 8090 if (mHeightCanMeasure == false) { 8091 width = getViewWidth() / 4; 8092 } else { 8093 Rect visRect = new Rect(); 8094 calcOurVisibleRect(visRect); 8095 width = visRect.width() / 2; 8096 } 8097 // FIXME the divisor should be retrieved from somewhere 8098 return viewToContentX(width); 8099 } 8100 8101 private int getScaledMaxYScroll() { 8102 int height; 8103 if (mHeightCanMeasure == false) { 8104 height = getViewHeight() / 4; 8105 } else { 8106 Rect visRect = new Rect(); 8107 calcOurVisibleRect(visRect); 8108 height = visRect.height() / 2; 8109 } 8110 // FIXME the divisor should be retrieved from somewhere 8111 // the closest thing today is hard-coded into ScrollView.java 8112 // (from ScrollView.java, line 363) int maxJump = height/2; 8113 return Math.round(height * mZoomManager.getInvScale()); 8114 } 8115 8116 /** 8117 * Called by JNI to invalidate view 8118 */ 8119 private void viewInvalidate() { 8120 invalidate(); 8121 } 8122 8123 /** 8124 * Pass the key directly to the page. This assumes that 8125 * nativePageShouldHandleShiftAndArrows() returned true. 8126 */ 8127 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 8128 int keyEventAction; 8129 int eventHubAction; 8130 if (down) { 8131 keyEventAction = KeyEvent.ACTION_DOWN; 8132 eventHubAction = EventHub.KEY_DOWN; 8133 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 8134 } else { 8135 keyEventAction = KeyEvent.ACTION_UP; 8136 eventHubAction = EventHub.KEY_UP; 8137 } 8138 8139 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 8140 1, (metaState & KeyEvent.META_SHIFT_ON) 8141 | (metaState & KeyEvent.META_ALT_ON) 8142 | (metaState & KeyEvent.META_SYM_ON) 8143 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 8144 mWebViewCore.sendMessage(eventHubAction, event); 8145 } 8146 8147 // return true if the key was handled 8148 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 8149 long time) { 8150 if (mNativeClass == 0) { 8151 return false; 8152 } 8153 mInitialHitTestResult = null; 8154 mLastCursorTime = time; 8155 mLastCursorBounds = nativeGetCursorRingBounds(); 8156 boolean keyHandled 8157 = nativeMoveCursor(keyCode, count, noScroll) == false; 8158 if (DebugFlags.WEB_VIEW) { 8159 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 8160 + " mLastCursorTime=" + mLastCursorTime 8161 + " handled=" + keyHandled); 8162 } 8163 if (keyHandled == false) { 8164 return keyHandled; 8165 } 8166 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 8167 if (contentCursorRingBounds.isEmpty()) return keyHandled; 8168 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 8169 // set last touch so that context menu related functions will work 8170 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 8171 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 8172 if (mHeightCanMeasure == false) { 8173 return keyHandled; 8174 } 8175 Rect visRect = new Rect(); 8176 calcOurVisibleRect(visRect); 8177 Rect outset = new Rect(visRect); 8178 int maxXScroll = visRect.width() / 2; 8179 int maxYScroll = visRect.height() / 2; 8180 outset.inset(-maxXScroll, -maxYScroll); 8181 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 8182 return keyHandled; 8183 } 8184 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 8185 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 8186 maxXScroll); 8187 if (maxH > 0) { 8188 pinScrollBy(maxH, 0, true, 0); 8189 } else { 8190 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 8191 -maxXScroll); 8192 if (maxH < 0) { 8193 pinScrollBy(maxH, 0, true, 0); 8194 } 8195 } 8196 if (mLastCursorBounds.isEmpty()) return keyHandled; 8197 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 8198 return keyHandled; 8199 } 8200 if (DebugFlags.WEB_VIEW) { 8201 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 8202 + contentCursorRingBounds); 8203 } 8204 requestRectangleOnScreen(viewCursorRingBounds); 8205 return keyHandled; 8206 } 8207 8208 /** 8209 * @return Whether accessibility script has been injected. 8210 */ 8211 private boolean accessibilityScriptInjected() { 8212 // TODO: Maybe the injected script should announce its presence in 8213 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 8214 // will check that as one of the conditions it looks for 8215 return mAccessibilityScriptInjected; 8216 } 8217 8218 /** 8219 * Set the background color. It's white by default. Pass 8220 * zero to make the view transparent. 8221 * @param color the ARGB color described by Color.java 8222 */ 8223 @Override 8224 public void setBackgroundColor(int color) { 8225 mBackgroundColor = color; 8226 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 8227 } 8228 8229 public void debugDump() { 8230 nativeDebugDump(); 8231 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 8232 } 8233 8234 /** 8235 * Draw the HTML page into the specified canvas. This call ignores any 8236 * view-specific zoom, scroll offset, or other changes. It does not draw 8237 * any view-specific chrome, such as progress or URL bars. 8238 * 8239 * @hide only needs to be accessible to Browser and testing 8240 */ 8241 public void drawPage(Canvas canvas) { 8242 nativeDraw(canvas, 0, 0, false); 8243 } 8244 8245 /** 8246 * Enable expanded tiles bound for smoother scrolling. 8247 * 8248 * @hide only used by the Browser 8249 */ 8250 public void setExpandedTileBounds(boolean enabled) { 8251 nativeSetExpandedTileBounds(enabled); 8252 } 8253 8254 /** 8255 * Set the time to wait between passing touches to WebCore. See also the 8256 * TOUCH_SENT_INTERVAL member for further discussion. 8257 * 8258 * @hide This is only used by the DRT test application. 8259 */ 8260 public void setTouchInterval(int interval) { 8261 mCurrentTouchInterval = interval; 8262 } 8263 8264 /** 8265 * Update our cache with updatedText. 8266 * @param updatedText The new text to put in our cache. 8267 */ 8268 /* package */ void updateCachedTextfield(String updatedText) { 8269 // Also place our generation number so that when we look at the cache 8270 // we recognize that it is up to date. 8271 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 8272 } 8273 8274 /*package*/ void autoFillForm(int autoFillQueryId) { 8275 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 8276 } 8277 8278 /* package */ ViewManager getViewManager() { 8279 return mViewManager; 8280 } 8281 8282 private native int nativeCacheHitFramePointer(); 8283 private native boolean nativeCacheHitIsPlugin(); 8284 private native Rect nativeCacheHitNodeBounds(); 8285 private native int nativeCacheHitNodePointer(); 8286 /* package */ native void nativeClearCursor(); 8287 private native void nativeCreate(int ptr); 8288 private native int nativeCursorFramePointer(); 8289 private native Rect nativeCursorNodeBounds(); 8290 private native int nativeCursorNodePointer(); 8291 private native boolean nativeCursorIntersects(Rect visibleRect); 8292 private native boolean nativeCursorIsAnchor(); 8293 private native boolean nativeCursorIsTextInput(); 8294 private native Point nativeCursorPosition(); 8295 private native String nativeCursorText(); 8296 /** 8297 * Returns true if the native cursor node says it wants to handle key events 8298 * (ala plugins). This can only be called if mNativeClass is non-zero! 8299 */ 8300 private native boolean nativeCursorWantsKeyEvents(); 8301 private native void nativeDebugDump(); 8302 private native void nativeDestroy(); 8303 8304 /** 8305 * Draw the picture set with a background color and extra. If 8306 * "splitIfNeeded" is true and the return value is not 0, the return value 8307 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 8308 * native allocation can be freed. 8309 */ 8310 private native int nativeDraw(Canvas canvas, int color, int extra, 8311 boolean splitIfNeeded); 8312 private native void nativeDumpDisplayTree(String urlOrNull); 8313 private native boolean nativeEvaluateLayersAnimations(); 8314 private native int nativeGetDrawGLFunction(Rect rect, float scale, int extras); 8315 private native void nativeUpdateDrawGLFunction(Rect rect); 8316 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 8317 private native void nativeExtendSelection(int x, int y); 8318 private native int nativeFindAll(String findLower, String findUpper, 8319 boolean sameAsLastSearch); 8320 private native void nativeFindNext(boolean forward); 8321 /* package */ native int nativeFocusCandidateFramePointer(); 8322 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 8323 /* package */ native boolean nativeFocusCandidateIsPassword(); 8324 private native boolean nativeFocusCandidateIsRtlText(); 8325 private native boolean nativeFocusCandidateIsTextInput(); 8326 /* package */ native int nativeFocusCandidateMaxLength(); 8327 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 8328 /* package */ native String nativeFocusCandidateName(); 8329 private native Rect nativeFocusCandidateNodeBounds(); 8330 /** 8331 * @return A Rect with left, top, right, bottom set to the corresponding 8332 * padding values in the focus candidate, if it is a textfield/textarea with 8333 * a style. Otherwise return null. This is not actually a rectangle; Rect 8334 * is being used to pass four integers. 8335 */ 8336 private native Rect nativeFocusCandidatePaddingRect(); 8337 /* package */ native int nativeFocusCandidatePointer(); 8338 private native String nativeFocusCandidateText(); 8339 /* package */ native float nativeFocusCandidateTextSize(); 8340 /* package */ native int nativeFocusCandidateLineHeight(); 8341 /** 8342 * Returns an integer corresponding to WebView.cpp::type. 8343 * See WebTextView.setType() 8344 */ 8345 private native int nativeFocusCandidateType(); 8346 private native boolean nativeFocusIsPlugin(); 8347 private native Rect nativeFocusNodeBounds(); 8348 /* package */ native int nativeFocusNodePointer(); 8349 private native Rect nativeGetCursorRingBounds(); 8350 private native String nativeGetSelection(); 8351 private native boolean nativeHasCursorNode(); 8352 private native boolean nativeHasFocusNode(); 8353 private native void nativeHideCursor(); 8354 private native boolean nativeHitSelection(int x, int y); 8355 private native String nativeImageURI(int x, int y); 8356 private native void nativeInstrumentReport(); 8357 private native Rect nativeLayerBounds(int layer); 8358 /* package */ native boolean nativeMoveCursorToNextTextInput(); 8359 // return true if the page has been scrolled 8360 private native boolean nativeMotionUp(int x, int y, int slop); 8361 // returns false if it handled the key 8362 private native boolean nativeMoveCursor(int keyCode, int count, 8363 boolean noScroll); 8364 private native int nativeMoveGeneration(); 8365 private native void nativeMoveSelection(int x, int y); 8366 /** 8367 * @return true if the page should get the shift and arrow keys, rather 8368 * than select text/navigation. 8369 * 8370 * If the focus is a plugin, or if the focus and cursor match and are 8371 * a contentEditable element, then the page should handle these keys. 8372 */ 8373 private native boolean nativePageShouldHandleShiftAndArrows(); 8374 private native boolean nativePointInNavCache(int x, int y, int slop); 8375 // Like many other of our native methods, you must make sure that 8376 // mNativeClass is not null before calling this method. 8377 private native void nativeRecordButtons(boolean focused, 8378 boolean pressed, boolean invalidate); 8379 private native void nativeResetSelection(); 8380 private native Point nativeSelectableText(); 8381 private native void nativeSelectAll(); 8382 private native void nativeSelectBestAt(Rect rect); 8383 private native void nativeSelectAt(int x, int y); 8384 private native int nativeSelectionX(); 8385 private native int nativeSelectionY(); 8386 private native int nativeFindIndex(); 8387 private native void nativeSetExtendSelection(); 8388 private native void nativeSetFindIsEmpty(); 8389 private native void nativeSetFindIsUp(boolean isUp); 8390 private native void nativeSetHeightCanMeasure(boolean measure); 8391 private native void nativeSetBaseLayer(int layer, Rect invalRect, 8392 boolean showVisualIndciator); 8393 private native void nativeShowCursorTimed(); 8394 private native void nativeReplaceBaseContent(int content); 8395 private native void nativeCopyBaseContentToPicture(Picture pict); 8396 private native boolean nativeHasContent(); 8397 private native void nativeSetSelectionPointer(boolean set, 8398 float scale, int x, int y); 8399 private native boolean nativeStartSelection(int x, int y); 8400 private native void nativeStopGL(); 8401 private native Rect nativeSubtractLayers(Rect content); 8402 private native int nativeTextGeneration(); 8403 // Never call this version except by updateCachedTextfield(String) - 8404 // we always want to pass in our generation number. 8405 private native void nativeUpdateCachedTextfield(String updatedText, 8406 int generation); 8407 private native boolean nativeWordSelection(int x, int y); 8408 // return NO_LEFTEDGE means failure. 8409 static final int NO_LEFTEDGE = -1; 8410 native int nativeGetBlockLeftEdge(int x, int y, float scale); 8411 8412 private native void nativeSetExpandedTileBounds(boolean enabled); 8413 8414 // Returns a pointer to the scrollable LayerAndroid at the given point. 8415 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 8416 Rect scrollBounds); 8417 /** 8418 * Scroll the specified layer. 8419 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 8420 * @param newX Destination x position to which to scroll. 8421 * @param newY Destination y position to which to scroll. 8422 * @return True if the layer is successfully scrolled. 8423 */ 8424 private native boolean nativeScrollLayer(int layer, int newX, int newY); 8425} 8426