WebView.java revision 601e779ae7e19f20670b5ce008b18b3d683e4033
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.BroadcastReceiver; 22import android.content.ClipboardManager; 23import android.content.Context; 24import android.content.DialogInterface; 25import android.content.DialogInterface.OnCancelListener; 26import android.content.Intent; 27import android.content.IntentFilter; 28import android.content.pm.PackageInfo; 29import android.content.pm.PackageManager; 30import android.content.res.Configuration; 31import android.database.DataSetObserver; 32import android.graphics.Bitmap; 33import android.graphics.BitmapFactory; 34import android.graphics.BitmapShader; 35import android.graphics.Canvas; 36import android.graphics.Color; 37import android.graphics.CornerPathEffect; 38import android.graphics.DrawFilter; 39import android.graphics.Paint; 40import android.graphics.PaintFlagsDrawFilter; 41import android.graphics.Picture; 42import android.graphics.Point; 43import android.graphics.Rect; 44import android.graphics.RectF; 45import android.graphics.Region; 46import android.graphics.Shader; 47import android.graphics.drawable.Drawable; 48import android.net.Proxy; 49import android.net.ProxyProperties; 50import android.net.Uri; 51import android.net.http.SslCertificate; 52import android.os.AsyncTask; 53import android.os.Bundle; 54import android.os.Handler; 55import android.os.Message; 56import android.provider.Settings; 57import android.speech.tts.TextToSpeech; 58import android.text.Selection; 59import android.text.Spannable; 60import android.util.AttributeSet; 61import android.util.EventLog; 62import android.util.Log; 63import android.view.Gravity; 64import android.view.HardwareCanvas; 65import android.view.KeyCharacterMap; 66import android.view.KeyEvent; 67import android.view.LayoutInflater; 68import android.view.MotionEvent; 69import android.view.ScaleGestureDetector; 70import android.view.SoundEffectConstants; 71import android.view.VelocityTracker; 72import android.view.View; 73import android.view.ViewConfiguration; 74import android.view.ViewGroup; 75import android.view.ViewParent; 76import android.view.ViewTreeObserver; 77import android.view.accessibility.AccessibilityManager; 78import android.view.inputmethod.EditorInfo; 79import android.view.inputmethod.InputConnection; 80import android.view.inputmethod.InputMethodManager; 81import android.webkit.WebTextView.AutoCompleteAdapter; 82import android.webkit.WebViewCore.EventHub; 83import android.webkit.WebViewCore.TouchEventData; 84import android.webkit.WebViewCore.TouchHighlightData; 85import android.widget.AbsoluteLayout; 86import android.widget.Adapter; 87import android.widget.AdapterView; 88import android.widget.AdapterView.OnItemClickListener; 89import android.widget.ArrayAdapter; 90import android.widget.CheckedTextView; 91import android.widget.LinearLayout; 92import android.widget.ListView; 93import android.widget.OverScroller; 94import android.widget.Toast; 95 96import java.io.File; 97import java.io.FileInputStream; 98import java.io.FileNotFoundException; 99import java.io.FileOutputStream; 100import java.net.URLDecoder; 101import java.util.ArrayList; 102import java.util.HashMap; 103import java.util.HashSet; 104import java.util.List; 105import java.util.Map; 106import java.util.Set; 107import java.util.Vector; 108import java.util.regex.Matcher; 109import java.util.regex.Pattern; 110 111import junit.framework.Assert; 112 113/** 114 * <p>A View that displays web pages. This class is the basis upon which you 115 * can roll your own web browser or simply display some online content within your Activity. 116 * It uses the WebKit rendering engine to display 117 * web pages and includes methods to navigate forward and backward 118 * through a history, zoom in and out, perform text searches and more.</p> 119 * <p>To enable the built-in zoom, set 120 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 121 * (introduced in API version 3). 122 * <p>Note that, in order for your Activity to access the Internet and load web pages 123 * in a WebView, you must add the {@code INTERNET} permissions to your 124 * Android Manifest file:</p> 125 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 126 * 127 * <p>This must be a child of the <a 128 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 129 * element.</p> 130 * 131 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 132 * tutorial</a>.</p> 133 * 134 * <h3>Basic usage</h3> 135 * 136 * <p>By default, a WebView provides no browser-like widgets, does not 137 * enable JavaScript and web page errors are ignored. If your goal is only 138 * to display some HTML as a part of your UI, this is probably fine; 139 * the user won't need to interact with the web page beyond reading 140 * it, and the web page won't need to interact with the user. If you 141 * actually want a full-blown web browser, then you probably want to 142 * invoke the Browser application with a URL Intent rather than show it 143 * with a WebView. For example: 144 * <pre> 145 * Uri uri = Uri.parse("http://www.example.com"); 146 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 147 * startActivity(intent); 148 * </pre> 149 * <p>See {@link android.content.Intent} for more information.</p> 150 * 151 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 152 * or set the entire Activity window as a WebView during {@link 153 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 154 * <pre class="prettyprint"> 155 * WebView webview = new WebView(this); 156 * setContentView(webview); 157 * </pre> 158 * 159 * <p>Then load the desired web page:</p> 160 * <pre> 161 * // Simplest usage: note that an exception will NOT be thrown 162 * // if there is an error loading this page (see below). 163 * webview.loadUrl("http://slashdot.org/"); 164 * 165 * // OR, you can also load from an HTML string: 166 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 167 * webview.loadData(summary, "text/html", "utf-8"); 168 * // ... although note that there are restrictions on what this HTML can do. 169 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 170 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 171 * </pre> 172 * 173 * <p>A WebView has several customization points where you can add your 174 * own behavior. These are:</p> 175 * 176 * <ul> 177 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 178 * This class is called when something that might impact a 179 * browser UI happens, for instance, progress updates and 180 * JavaScript alerts are sent here (see <a 181 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 182 * </li> 183 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 184 * It will be called when things happen that impact the 185 * rendering of the content, eg, errors or form submissions. You 186 * can also intercept URL loading here (via {@link 187 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 188 * shouldOverrideUrlLoading()}).</li> 189 * <li>Modifying the {@link android.webkit.WebSettings}, such as 190 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 191 * setJavaScriptEnabled()}. </li> 192 * <li>Adding JavaScript-to-Java interfaces with the {@link 193 * android.webkit.WebView#addJavascriptInterface} method. 194 * This lets you bind Java objects into the WebView so they can be 195 * controlled from the web pages JavaScript.</li> 196 * </ul> 197 * 198 * <p>Here's a more complicated example, showing error handling, 199 * settings, and progress notification:</p> 200 * 201 * <pre class="prettyprint"> 202 * // Let's display the progress in the activity title bar, like the 203 * // browser app does. 204 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 205 * 206 * webview.getSettings().setJavaScriptEnabled(true); 207 * 208 * final Activity activity = this; 209 * webview.setWebChromeClient(new WebChromeClient() { 210 * public void onProgressChanged(WebView view, int progress) { 211 * // Activities and WebViews measure progress with different scales. 212 * // The progress meter will automatically disappear when we reach 100% 213 * activity.setProgress(progress * 1000); 214 * } 215 * }); 216 * webview.setWebViewClient(new WebViewClient() { 217 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 218 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 219 * } 220 * }); 221 * 222 * webview.loadUrl("http://slashdot.org/"); 223 * </pre> 224 * 225 * <h3>Cookie and window management</h3> 226 * 227 * <p>For obvious security reasons, your application has its own 228 * cache, cookie store etc.—it does not share the Browser 229 * application's data. Cookies are managed on a separate thread, so 230 * operations like index building don't block the UI 231 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 232 * if you want to use cookies in your application. 233 * </p> 234 * 235 * <p>By default, requests by the HTML to open new windows are 236 * ignored. This is true whether they be opened by JavaScript or by 237 * the target attribute on a link. You can customize your 238 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 239 * and render them in whatever manner you want.</p> 240 * 241 * <p>The standard behavior for an Activity is to be destroyed and 242 * recreated when the device orientation or any other configuration changes. This will cause 243 * the WebView to reload the current page. If you don't want that, you 244 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 245 * changes, and then just leave the WebView alone. It'll automatically 246 * re-orient itself as appropriate. Read <a 247 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 248 * more information about how to handle configuration changes during runtime.</p> 249 * 250 * 251 * <h3>Building web pages to support different screen densities</h3> 252 * 253 * <p>The screen density of a device is based on the screen resolution. A screen with low density 254 * has fewer available pixels per inch, where a screen with high density 255 * has more — sometimes significantly more — pixels per inch. The density of a 256 * screen is important because, other things being equal, a UI element (such as a button) whose 257 * height and width are defined in terms of screen pixels will appear larger on the lower density 258 * screen and smaller on the higher density screen. 259 * For simplicity, Android collapses all actual screen densities into three generalized densities: 260 * high, medium, and low.</p> 261 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 262 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 263 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 264 * are bigger). 265 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 266 * you (as a web developer) target screens with different screen densities.</p> 267 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 268 * <ul> 269 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 270 * default scaling factor used for the current device. For example, if the value of {@code 271 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 272 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 273 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 274 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 275 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 276 * (discussed below), then you can stop this default scaling behavior.</li> 277 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 278 * densities for which this style sheet is to be used. The corresponding value should be either 279 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 280 * density, or high density screens, respectively. For example: 281 * <pre> 282 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 283 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 284 * which is the high density pixel ratio.</p> 285 * </li> 286 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 287 * this to specify the target density for which the web page is designed, using the following 288 * values: 289 * <ul> 290 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 291 * occurs.</li> 292 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 293 * as appropriate.</li> 294 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 295 * low density screens scale down. This is also the default behavior.</li> 296 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 297 * as appropriate.</li> 298 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 299 * values are 70-400).</li> 300 * </ul> 301 * <p>Here's an example meta tag to specify the target density:</p> 302 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 303 * </ul> 304 * <p>If you want to modify your web page for different densities, by using the {@code 305 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 306 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 307 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 308 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 309 * 310 * 311 */ 312@Widget 313public class WebView extends AbsoluteLayout 314 implements ViewTreeObserver.OnGlobalFocusChangeListener, 315 ViewGroup.OnHierarchyChangeListener { 316 317 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 318 public void onGlobalLayout() { 319 if (isShown()) { 320 setGLRectViewport(); 321 } 322 } 323 } 324 325 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 326 public void onScrollChanged() { 327 if (isShown()) { 328 setGLRectViewport(); 329 } 330 } 331 } 332 333 // The listener to capture global layout change event. 334 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 335 336 // The listener to capture scroll event. 337 private InnerScrollChangedListener mScrollChangedListener = null; 338 339 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 340 // the screen all-the-time. Good for profiling our drawing code 341 static private final boolean AUTO_REDRAW_HACK = false; 342 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 343 private boolean mAutoRedraw; 344 345 // Reference to the AlertDialog displayed by InvokeListBox. 346 // It's used to dismiss the dialog in destroy if not done before. 347 private AlertDialog mListBoxDialog = null; 348 349 static final String LOGTAG = "webview"; 350 351 private ZoomManager mZoomManager; 352 353 private Rect mGLRectViewport = new Rect(); 354 private boolean mGLViewportEmpty = false; 355 356 /** 357 * Transportation object for returning WebView across thread boundaries. 358 */ 359 public class WebViewTransport { 360 private WebView mWebview; 361 362 /** 363 * Set the WebView to the transportation object. 364 * @param webview The WebView to transport. 365 */ 366 public synchronized void setWebView(WebView webview) { 367 mWebview = webview; 368 } 369 370 /** 371 * Return the WebView object. 372 * @return WebView The transported WebView object. 373 */ 374 public synchronized WebView getWebView() { 375 return mWebview; 376 } 377 } 378 379 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 380 private final CallbackProxy mCallbackProxy; 381 382 private final WebViewDatabase mDatabase; 383 384 // SSL certificate for the main top-level page (if secure) 385 private SslCertificate mCertificate; 386 387 // Native WebView pointer that is 0 until the native object has been 388 // created. 389 private int mNativeClass; 390 // This would be final but it needs to be set to null when the WebView is 391 // destroyed. 392 private WebViewCore mWebViewCore; 393 // Handler for dispatching UI messages. 394 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 395 private WebTextView mWebTextView; 396 // Used to ignore changes to webkit text that arrives to the UI side after 397 // more key events. 398 private int mTextGeneration; 399 400 /* package */ void incrementTextGeneration() { mTextGeneration++; } 401 402 // Used by WebViewCore to create child views. 403 /* package */ final ViewManager mViewManager; 404 405 // Used to display in full screen mode 406 PluginFullScreenHolder mFullScreenHolder; 407 408 /** 409 * Position of the last touch event in pixels. 410 * Use integer to prevent loss of dragging delta calculation accuracy; 411 * which was done in float and converted to integer, and resulted in gradual 412 * and compounding touch position and view dragging mismatch. 413 */ 414 private int mLastTouchX; 415 private int mLastTouchY; 416 417 /** 418 * Time of the last touch event. 419 */ 420 private long mLastTouchTime; 421 422 /** 423 * Time of the last time sending touch event to WebViewCore 424 */ 425 private long mLastSentTouchTime; 426 427 /** 428 * The minimum elapsed time before sending another ACTION_MOVE event to 429 * WebViewCore. This really should be tuned for each type of the devices. 430 * For example in Google Map api test case, it takes Dream device at least 431 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 432 * triggering the layout and drawing the picture. While the same process 433 * takes 60+ms on the current high speed device. If we make 434 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 435 * to WebViewCore queue and the real layout and draw events will be pushed 436 * to further, which slows down the refresh rate. Choose 50 to favor the 437 * current high speed devices. For Dream like devices, 100 is a better 438 * choice. Maybe make this in the buildspec later. 439 * (Update 12/14/2010: changed to 0 since current device should be able to 440 * handle the raw events and Map team voted to have the raw events too. 441 */ 442 private static final int TOUCH_SENT_INTERVAL = 0; 443 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 444 445 /** 446 * Helper class to get velocity for fling 447 */ 448 VelocityTracker mVelocityTracker; 449 private int mMaximumFling; 450 private float mLastVelocity; 451 private float mLastVelX; 452 private float mLastVelY; 453 454 // The id of the native layer being scrolled. 455 private int mScrollingLayer; 456 private Rect mScrollingLayerRect = new Rect(); 457 458 // only trigger accelerated fling if the new velocity is at least 459 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 460 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 461 462 /** 463 * Touch mode 464 */ 465 private int mTouchMode = TOUCH_DONE_MODE; 466 private static final int TOUCH_INIT_MODE = 1; 467 private static final int TOUCH_DRAG_START_MODE = 2; 468 private static final int TOUCH_DRAG_MODE = 3; 469 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 470 private static final int TOUCH_SHORTPRESS_MODE = 5; 471 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 472 private static final int TOUCH_DONE_MODE = 7; 473 private static final int TOUCH_PINCH_DRAG = 8; 474 private static final int TOUCH_DRAG_LAYER_MODE = 9; 475 476 // Whether to forward the touch events to WebCore 477 // Can only be set by WebKit via JNI. 478 private boolean mForwardTouchEvents = false; 479 480 // Whether to prevent default during touch. The initial value depends on 481 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 482 // for touch down. Otherwise UI will wait for the answer of the first 483 // confirmed move before taking over the control. 484 private static final int PREVENT_DEFAULT_NO = 0; 485 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 486 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 487 private static final int PREVENT_DEFAULT_YES = 3; 488 private static final int PREVENT_DEFAULT_IGNORE = 4; 489 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 490 491 // true when the touch movement exceeds the slop 492 private boolean mConfirmMove; 493 494 // if true, touch events will be first processed by WebCore, if prevent 495 // default is not set, the UI will continue handle them. 496 private boolean mDeferTouchProcess; 497 498 // Currently, multi-touch events are sent to WebKit first then back to 499 // WebView while single-touch events are handled in WebView first. 500 // So there is a chance that a single-touch move event is handled in WebView 501 // before multi-touch events are finished. 502 // if mIsHandlingMultiTouch is true, which means multi-touch event handling 503 // is not finished, then any single-touch move event will be skipped. 504 // FIXME: send single-touch events to WebKit first then back to WebView. 505 private boolean mIsHandlingMultiTouch = false; 506 507 // to avoid interfering with the current touch events, track them 508 // separately. Currently no snapping or fling in the deferred process mode 509 private int mDeferTouchMode = TOUCH_DONE_MODE; 510 private float mLastDeferTouchX; 511 private float mLastDeferTouchY; 512 513 // To keep track of whether the current drag was initiated by a WebTextView, 514 // so that we know not to hide the cursor 515 boolean mDragFromTextInput; 516 517 // Whether or not to draw the cursor ring. 518 private boolean mDrawCursorRing = true; 519 520 // true if onPause has been called (and not onResume) 521 private boolean mIsPaused; 522 523 private HitTestResult mInitialHitTestResult; 524 525 /** 526 * Customizable constant 527 */ 528 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 529 private int mTouchSlopSquare; 530 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 531 private int mDoubleTapSlopSquare; 532 // pre-computed density adjusted navigation slop 533 private int mNavSlop; 534 // This should be ViewConfiguration.getTapTimeout() 535 // But system time out is 100ms, which is too short for the browser. 536 // In the browser, if it switches out of tap too soon, jump tap won't work. 537 private static final int TAP_TIMEOUT = 200; 538 // This should be ViewConfiguration.getLongPressTimeout() 539 // But system time out is 500ms, which is too short for the browser. 540 // With a short timeout, it's difficult to treat trigger a short press. 541 private static final int LONG_PRESS_TIMEOUT = 1000; 542 // needed to avoid flinging after a pause of no movement 543 private static final int MIN_FLING_TIME = 250; 544 // draw unfiltered after drag is held without movement 545 private static final int MOTIONLESS_TIME = 100; 546 // The amount of content to overlap between two screens when going through 547 // pages with the space bar, in pixels. 548 private static final int PAGE_SCROLL_OVERLAP = 24; 549 550 /** 551 * These prevent calling requestLayout if either dimension is fixed. This 552 * depends on the layout parameters and the measure specs. 553 */ 554 boolean mWidthCanMeasure; 555 boolean mHeightCanMeasure; 556 557 // Remember the last dimensions we sent to the native side so we can avoid 558 // sending the same dimensions more than once. 559 int mLastWidthSent; 560 int mLastHeightSent; 561 // Since view height sent to webkit could be fixed to avoid relayout, this 562 // value records the last sent actual view height. 563 int mLastActualHeightSent; 564 565 private int mContentWidth; // cache of value from WebViewCore 566 private int mContentHeight; // cache of value from WebViewCore 567 568 // Need to have the separate control for horizontal and vertical scrollbar 569 // style than the View's single scrollbar style 570 private boolean mOverlayHorizontalScrollbar = true; 571 private boolean mOverlayVerticalScrollbar = false; 572 573 // our standard speed. this way small distances will be traversed in less 574 // time than large distances, but we cap the duration, so that very large 575 // distances won't take too long to get there. 576 private static final int STD_SPEED = 480; // pixels per second 577 // time for the longest scroll animation 578 private static final int MAX_DURATION = 750; // milliseconds 579 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 580 581 // Used by OverScrollGlow 582 OverScroller mScroller; 583 584 private boolean mInOverScrollMode = false; 585 private static Paint mOverScrollBackground; 586 private static Paint mOverScrollBorder; 587 588 private boolean mWrapContent; 589 private static final int MOTIONLESS_FALSE = 0; 590 private static final int MOTIONLESS_PENDING = 1; 591 private static final int MOTIONLESS_TRUE = 2; 592 private static final int MOTIONLESS_IGNORE = 3; 593 private int mHeldMotionless; 594 595 // An instance for injecting accessibility in WebViews with disabled 596 // JavaScript or ones for which no accessibility script exists 597 private AccessibilityInjector mAccessibilityInjector; 598 599 // flag indicating if accessibility script is injected so we 600 // know to handle Shift and arrows natively first 601 private boolean mAccessibilityScriptInjected; 602 603 // the color used to highlight the touch rectangles 604 private static final int mHightlightColor = 0x33000000; 605 // the round corner for the highlight path 606 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 607 // the region indicating where the user touched on the screen 608 private Region mTouchHighlightRegion = new Region(); 609 // the paint for the touch highlight 610 private Paint mTouchHightlightPaint; 611 // debug only 612 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 613 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 614 private Paint mTouchCrossHairColor; 615 private int mTouchHighlightX; 616 private int mTouchHighlightY; 617 618 /* 619 * Private message ids 620 */ 621 private static final int REMEMBER_PASSWORD = 1; 622 private static final int NEVER_REMEMBER_PASSWORD = 2; 623 private static final int SWITCH_TO_SHORTPRESS = 3; 624 private static final int SWITCH_TO_LONGPRESS = 4; 625 private static final int RELEASE_SINGLE_TAP = 5; 626 private static final int REQUEST_FORM_DATA = 6; 627 private static final int RESUME_WEBCORE_PRIORITY = 7; 628 private static final int DRAG_HELD_MOTIONLESS = 8; 629 private static final int AWAKEN_SCROLL_BARS = 9; 630 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 631 private static final int SCROLL_SELECT_TEXT = 11; 632 633 634 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 635 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 636 637 /* 638 * Package message ids 639 */ 640 static final int SCROLL_TO_MSG_ID = 101; 641 static final int NEW_PICTURE_MSG_ID = 105; 642 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 643 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 644 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 645 static final int UPDATE_ZOOM_RANGE = 109; 646 static final int UNHANDLED_NAV_KEY = 110; 647 static final int CLEAR_TEXT_ENTRY = 111; 648 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 649 static final int SHOW_RECT_MSG_ID = 113; 650 static final int LONG_PRESS_CENTER = 114; 651 static final int PREVENT_TOUCH_ID = 115; 652 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 653 // obj=Rect in doc coordinates 654 static final int INVAL_RECT_MSG_ID = 117; 655 static final int REQUEST_KEYBOARD = 118; 656 static final int DO_MOTION_UP = 119; 657 static final int SHOW_FULLSCREEN = 120; 658 static final int HIDE_FULLSCREEN = 121; 659 static final int DOM_FOCUS_CHANGED = 122; 660 static final int REPLACE_BASE_CONTENT = 123; 661 static final int FORM_DID_BLUR = 124; 662 static final int RETURN_LABEL = 125; 663 static final int FIND_AGAIN = 126; 664 static final int CENTER_FIT_RECT = 127; 665 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 666 static final int SET_SCROLLBAR_MODES = 129; 667 static final int SELECTION_STRING_CHANGED = 130; 668 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 669 static final int SAVE_WEBARCHIVE_FINISHED = 132; 670 671 static final int SET_AUTOFILLABLE = 133; 672 static final int AUTOFILL_COMPLETE = 134; 673 674 static final int SELECT_AT = 135; 675 static final int SCREEN_ON = 136; 676 677 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 678 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 679 680 static final String[] HandlerPrivateDebugString = { 681 "REMEMBER_PASSWORD", // = 1; 682 "NEVER_REMEMBER_PASSWORD", // = 2; 683 "SWITCH_TO_SHORTPRESS", // = 3; 684 "SWITCH_TO_LONGPRESS", // = 4; 685 "RELEASE_SINGLE_TAP", // = 5; 686 "REQUEST_FORM_DATA", // = 6; 687 "RESUME_WEBCORE_PRIORITY", // = 7; 688 "DRAG_HELD_MOTIONLESS", // = 8; 689 "AWAKEN_SCROLL_BARS", // = 9; 690 "PREVENT_DEFAULT_TIMEOUT", // = 10; 691 "SCROLL_SELECT_TEXT" // = 11; 692 }; 693 694 static final String[] HandlerPackageDebugString = { 695 "SCROLL_TO_MSG_ID", // = 101; 696 "102", // = 102; 697 "103", // = 103; 698 "104", // = 104; 699 "NEW_PICTURE_MSG_ID", // = 105; 700 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 701 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 702 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 703 "UPDATE_ZOOM_RANGE", // = 109; 704 "UNHANDLED_NAV_KEY", // = 110; 705 "CLEAR_TEXT_ENTRY", // = 111; 706 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 707 "SHOW_RECT_MSG_ID", // = 113; 708 "LONG_PRESS_CENTER", // = 114; 709 "PREVENT_TOUCH_ID", // = 115; 710 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 711 "INVAL_RECT_MSG_ID", // = 117; 712 "REQUEST_KEYBOARD", // = 118; 713 "DO_MOTION_UP", // = 119; 714 "SHOW_FULLSCREEN", // = 120; 715 "HIDE_FULLSCREEN", // = 121; 716 "DOM_FOCUS_CHANGED", // = 122; 717 "REPLACE_BASE_CONTENT", // = 123; 718 "FORM_DID_BLUR", // = 124; 719 "RETURN_LABEL", // = 125; 720 "FIND_AGAIN", // = 126; 721 "CENTER_FIT_RECT", // = 127; 722 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 723 "SET_SCROLLBAR_MODES", // = 129; 724 "SELECTION_STRING_CHANGED", // = 130; 725 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 726 "SAVE_WEBARCHIVE_FINISHED", // = 132; 727 "SET_AUTOFILLABLE", // = 133; 728 "AUTOFILL_COMPLETE", // = 134; 729 "SELECT_AT", // = 135; 730 "SCREEN_ON" // = 136; 731 }; 732 733 // If the site doesn't use the viewport meta tag to specify the viewport, 734 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 735 static final int DEFAULT_VIEWPORT_WIDTH = 980; 736 737 // normally we try to fit the content to the minimum preferred width 738 // calculated by the Webkit. To avoid the bad behavior when some site's 739 // minimum preferred width keeps growing when changing the viewport width or 740 // the minimum preferred width is huge, an upper limit is needed. 741 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 742 743 // initial scale in percent. 0 means using default. 744 private int mInitialScaleInPercent = 0; 745 746 // Whether or not a scroll event should be sent to webkit. This is only set 747 // to false when restoring the scroll position. 748 private boolean mSendScrollEvent = true; 749 750 private int mSnapScrollMode = SNAP_NONE; 751 private static final int SNAP_NONE = 0; 752 private static final int SNAP_LOCK = 1; // not a separate state 753 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 754 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 755 private boolean mSnapPositive; 756 757 // keep these in sync with their counterparts in WebView.cpp 758 private static final int DRAW_EXTRAS_NONE = 0; 759 private static final int DRAW_EXTRAS_FIND = 1; 760 private static final int DRAW_EXTRAS_SELECTION = 2; 761 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 762 763 // keep this in sync with WebCore:ScrollbarMode in WebKit 764 private static final int SCROLLBAR_AUTO = 0; 765 private static final int SCROLLBAR_ALWAYSOFF = 1; 766 // as we auto fade scrollbar, this is ignored. 767 private static final int SCROLLBAR_ALWAYSON = 2; 768 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 769 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 770 771 // constants for determining script injection strategy 772 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 773 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 774 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 775 776 // the alias via which accessibility JavaScript interface is exposed 777 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 778 779 // JavaScript to inject the script chooser which will 780 // pick the right script for the current URL 781 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 782 "javascript:(function() {" + 783 " var chooser = document.createElement('script');" + 784 " chooser.type = 'text/javascript';" + 785 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 786 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 787 " })();"; 788 789 // Regular expression that matches the "axs" URL parameter. 790 // The value of 0 means the accessibility script is opted out 791 // The value of 1 means the accessibility script is already injected 792 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 793 794 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 795 private TextToSpeech mTextToSpeech; 796 797 // variable to cache the above pattern in case accessibility is enabled. 798 private Pattern mMatchAxsUrlParameterPattern; 799 800 /** 801 * Max distance to overscroll by in pixels. 802 * This how far content can be pulled beyond its normal bounds by the user. 803 */ 804 private int mOverscrollDistance; 805 806 /** 807 * Max distance to overfling by in pixels. 808 * This is how far flinged content can move beyond the end of its normal bounds. 809 */ 810 private int mOverflingDistance; 811 812 private OverScrollGlow mOverScrollGlow; 813 814 // Used to match key downs and key ups 815 private Vector<Integer> mKeysPressed; 816 817 /* package */ static boolean mLogEvent = true; 818 819 // for event log 820 private long mLastTouchUpTime = 0; 821 822 private WebViewCore.AutoFillData mAutoFillData; 823 824 /** 825 * URI scheme for telephone number 826 */ 827 public static final String SCHEME_TEL = "tel:"; 828 /** 829 * URI scheme for email address 830 */ 831 public static final String SCHEME_MAILTO = "mailto:"; 832 /** 833 * URI scheme for map address 834 */ 835 public static final String SCHEME_GEO = "geo:0,0?q="; 836 837 private int mBackgroundColor = Color.WHITE; 838 839 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 840 private int mAutoScrollX = 0; 841 private int mAutoScrollY = 0; 842 private int mMinAutoScrollX = 0; 843 private int mMaxAutoScrollX = 0; 844 private int mMinAutoScrollY = 0; 845 private int mMaxAutoScrollY = 0; 846 private Rect mScrollingLayerBounds = new Rect(); 847 private boolean mSentAutoScrollMessage = false; 848 849 // Used to notify listeners of a new picture. 850 private PictureListener mPictureListener; 851 /** 852 * Interface to listen for new pictures as they change. 853 */ 854 public interface PictureListener { 855 /** 856 * Notify the listener that the picture has changed. 857 * @param view The WebView that owns the picture. 858 * @param picture The new picture. 859 */ 860 public void onNewPicture(WebView view, Picture picture); 861 } 862 863 // FIXME: Want to make this public, but need to change the API file. 864 public /*static*/ class HitTestResult { 865 /** 866 * Default HitTestResult, where the target is unknown 867 */ 868 public static final int UNKNOWN_TYPE = 0; 869 /** 870 * HitTestResult for hitting a HTML::a tag 871 */ 872 public static final int ANCHOR_TYPE = 1; 873 /** 874 * HitTestResult for hitting a phone number 875 */ 876 public static final int PHONE_TYPE = 2; 877 /** 878 * HitTestResult for hitting a map address 879 */ 880 public static final int GEO_TYPE = 3; 881 /** 882 * HitTestResult for hitting an email address 883 */ 884 public static final int EMAIL_TYPE = 4; 885 /** 886 * HitTestResult for hitting an HTML::img tag 887 */ 888 public static final int IMAGE_TYPE = 5; 889 /** 890 * HitTestResult for hitting a HTML::a tag which contains HTML::img 891 */ 892 public static final int IMAGE_ANCHOR_TYPE = 6; 893 /** 894 * HitTestResult for hitting a HTML::a tag with src=http 895 */ 896 public static final int SRC_ANCHOR_TYPE = 7; 897 /** 898 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 899 */ 900 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 901 /** 902 * HitTestResult for hitting an edit text area 903 */ 904 public static final int EDIT_TEXT_TYPE = 9; 905 906 private int mType; 907 private String mExtra; 908 909 HitTestResult() { 910 mType = UNKNOWN_TYPE; 911 } 912 913 private void setType(int type) { 914 mType = type; 915 } 916 917 private void setExtra(String extra) { 918 mExtra = extra; 919 } 920 921 public int getType() { 922 return mType; 923 } 924 925 public String getExtra() { 926 return mExtra; 927 } 928 } 929 930 /** 931 * Construct a new WebView with a Context object. 932 * @param context A Context object used to access application assets. 933 */ 934 public WebView(Context context) { 935 this(context, null); 936 } 937 938 /** 939 * Construct a new WebView with layout parameters. 940 * @param context A Context object used to access application assets. 941 * @param attrs An AttributeSet passed to our parent. 942 */ 943 public WebView(Context context, AttributeSet attrs) { 944 this(context, attrs, com.android.internal.R.attr.webViewStyle); 945 } 946 947 /** 948 * Construct a new WebView with layout parameters and a default style. 949 * @param context A Context object used to access application assets. 950 * @param attrs An AttributeSet passed to our parent. 951 * @param defStyle The default style resource ID. 952 */ 953 public WebView(Context context, AttributeSet attrs, int defStyle) { 954 this(context, attrs, defStyle, false); 955 } 956 957 /** 958 * Construct a new WebView with layout parameters and a default style. 959 * @param context A Context object used to access application assets. 960 * @param attrs An AttributeSet passed to our parent. 961 * @param defStyle The default style resource ID. 962 */ 963 public WebView(Context context, AttributeSet attrs, int defStyle, 964 boolean privateBrowsing) { 965 this(context, attrs, defStyle, null, privateBrowsing); 966 } 967 968 /** 969 * Construct a new WebView with layout parameters, a default style and a set 970 * of custom Javscript interfaces to be added to the WebView at initialization 971 * time. This guarantees that these interfaces will be available when the JS 972 * context is initialized. 973 * @param context A Context object used to access application assets. 974 * @param attrs An AttributeSet passed to our parent. 975 * @param defStyle The default style resource ID. 976 * @param javaScriptInterfaces is a Map of interface names, as keys, and 977 * object implementing those interfaces, as values. 978 * @hide pending API council approval. 979 */ 980 protected WebView(Context context, AttributeSet attrs, int defStyle, 981 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 982 super(context, attrs, defStyle); 983 984 // Used by the chrome stack to find application paths 985 JniUtil.setContext(context); 986 987 mCallbackProxy = new CallbackProxy(context, this); 988 mViewManager = new ViewManager(this); 989 L10nUtils.loadStrings(context); 990 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 991 mDatabase = WebViewDatabase.getInstance(context); 992 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 993 mZoomManager = new ZoomManager(this, mCallbackProxy); 994 995 /* The init method must follow the creation of certain member variables, 996 * such as the mZoomManager. 997 */ 998 init(); 999 setupPackageListener(context); 1000 setupProxyListener(context); 1001 updateMultiTouchSupport(context); 1002 1003 if (privateBrowsing) { 1004 startPrivateBrowsing(); 1005 } 1006 1007 mAutoFillData = new WebViewCore.AutoFillData(); 1008 } 1009 1010 private static class ProxyReceiver extends BroadcastReceiver { 1011 @Override 1012 public void onReceive(Context context, Intent intent) { 1013 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1014 handleProxyBroadcast(intent); 1015 } 1016 } 1017 } 1018 1019 /* 1020 * A variable to track if there is a receiver added for PROXY_CHANGE_ACTION 1021 */ 1022 private static boolean sProxyReceiverAdded; 1023 1024 private static synchronized void setupProxyListener(Context context) { 1025 if (sProxyReceiverAdded) { 1026 return; 1027 } 1028 IntentFilter filter = new IntentFilter(); 1029 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1030 Intent currentProxy = context.getApplicationContext().registerReceiver( 1031 new ProxyReceiver(), filter); 1032 sProxyReceiverAdded = true; 1033 if (currentProxy != null) { 1034 handleProxyBroadcast(currentProxy); 1035 } 1036 } 1037 1038 private static void handleProxyBroadcast(Intent intent) { 1039 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1040 if (proxyProperties == null || proxyProperties.getHost() == null) { 1041 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, ""); 1042 return; 1043 } 1044 1045 String host = proxyProperties.getHost(); 1046 int port = proxyProperties.getPort(); 1047 if (port != 0) 1048 host += ":" + port; 1049 1050 // TODO: Handle exclusion list 1051 // The plan is to make an AndroidProxyResolver, and handle the blacklist 1052 // there 1053 String exclusionList = proxyProperties.getExclusionList(); 1054 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, host); 1055 } 1056 1057 /* 1058 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1059 * or ACTION_PACKAGE_REMOVED. 1060 */ 1061 private static boolean sPackageInstallationReceiverAdded = false; 1062 1063 /* 1064 * A set of Google packages we monitor for the 1065 * navigator.isApplicationInstalled() API. Add additional packages as 1066 * needed. 1067 */ 1068 private static Set<String> sGoogleApps; 1069 static { 1070 sGoogleApps = new HashSet<String>(); 1071 sGoogleApps.add("com.google.android.youtube"); 1072 } 1073 1074 private static class PackageListener extends BroadcastReceiver { 1075 @Override 1076 public void onReceive(Context context, Intent intent) { 1077 final String action = intent.getAction(); 1078 final String packageName = intent.getData().getSchemeSpecificPart(); 1079 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1080 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1081 // if it is replacing, refreshPlugins() when adding 1082 return; 1083 } 1084 1085 if (sGoogleApps.contains(packageName)) { 1086 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1087 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1088 } else { 1089 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1090 } 1091 } 1092 1093 PluginManager pm = PluginManager.getInstance(context); 1094 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1095 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1096 } 1097 } 1098 } 1099 1100 private void setupPackageListener(Context context) { 1101 1102 /* 1103 * we must synchronize the instance check and the creation of the 1104 * receiver to ensure that only ONE receiver exists for all WebView 1105 * instances. 1106 */ 1107 synchronized (WebView.class) { 1108 1109 // if the receiver already exists then we do not need to register it 1110 // again 1111 if (sPackageInstallationReceiverAdded) { 1112 return; 1113 } 1114 1115 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1116 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1117 filter.addDataScheme("package"); 1118 BroadcastReceiver packageListener = new PackageListener(); 1119 context.getApplicationContext().registerReceiver(packageListener, filter); 1120 sPackageInstallationReceiverAdded = true; 1121 } 1122 1123 // check if any of the monitored apps are already installed 1124 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1125 1126 @Override 1127 protected Set<String> doInBackground(Void... unused) { 1128 Set<String> installedPackages = new HashSet<String>(); 1129 PackageManager pm = mContext.getPackageManager(); 1130 List<PackageInfo> packages = pm.getInstalledPackages(0); 1131 for (PackageInfo p : packages) { 1132 if (sGoogleApps.contains(p.packageName)) { 1133 installedPackages.add(p.packageName); 1134 } 1135 } 1136 return installedPackages; 1137 } 1138 1139 // Executes on the UI thread 1140 @Override 1141 protected void onPostExecute(Set<String> installedPackages) { 1142 if (mWebViewCore != null) { 1143 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1144 } 1145 } 1146 }; 1147 task.execute(); 1148 } 1149 1150 void updateMultiTouchSupport(Context context) { 1151 mZoomManager.updateMultiTouchSupport(context); 1152 } 1153 1154 private void init() { 1155 setWillNotDraw(false); 1156 setFocusable(true); 1157 setFocusableInTouchMode(true); 1158 setClickable(true); 1159 setLongClickable(true); 1160 1161 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1162 int slop = configuration.getScaledTouchSlop(); 1163 mTouchSlopSquare = slop * slop; 1164 mMinLockSnapReverseDistance = slop; 1165 slop = configuration.getScaledDoubleTapSlop(); 1166 mDoubleTapSlopSquare = slop * slop; 1167 final float density = getContext().getResources().getDisplayMetrics().density; 1168 // use one line height, 16 based on our current default font, for how 1169 // far we allow a touch be away from the edge of a link 1170 mNavSlop = (int) (16 * density); 1171 mZoomManager.init(density); 1172 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1173 1174 // Compute the inverse of the density squared. 1175 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1176 1177 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1178 mOverflingDistance = configuration.getScaledOverflingDistance(); 1179 1180 setScrollBarStyle(super.getScrollBarStyle()); 1181 // Initially use a size of two, since the user is likely to only hold 1182 // down two keys at a time (shift + another key) 1183 mKeysPressed = new Vector<Integer>(2); 1184 } 1185 1186 /** 1187 * Adds accessibility APIs to JavaScript. 1188 * 1189 * Note: This method is responsible to performing the necessary 1190 * check if the accessibility APIs should be exposed. 1191 */ 1192 private void addAccessibilityApisToJavaScript() { 1193 if (AccessibilityManager.getInstance(mContext).isEnabled() 1194 && getSettings().getJavaScriptEnabled()) { 1195 // exposing the TTS for now ... 1196 mTextToSpeech = new TextToSpeech(getContext(), null); 1197 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1198 } 1199 } 1200 1201 /** 1202 * Removes accessibility APIs from JavaScript. 1203 */ 1204 private void removeAccessibilityApisFromJavaScript() { 1205 // exposing the TTS for now ... 1206 if (mTextToSpeech != null) { 1207 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1208 mTextToSpeech.shutdown(); 1209 mTextToSpeech = null; 1210 } 1211 } 1212 1213 @Override 1214 public void setOverScrollMode(int mode) { 1215 super.setOverScrollMode(mode); 1216 if (mode != OVER_SCROLL_NEVER) { 1217 if (mOverScrollGlow == null) { 1218 mOverScrollGlow = new OverScrollGlow(this); 1219 } 1220 } else { 1221 mOverScrollGlow = null; 1222 } 1223 } 1224 1225 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1226 final float density = mContext.getResources().getDisplayMetrics().density 1227 * 100 / zoomDensity; 1228 mNavSlop = (int) (16 * density); 1229 mZoomManager.updateDefaultZoomDensity(density); 1230 } 1231 1232 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1233 String password, final Message resumeMsg) { 1234 boolean rVal = false; 1235 if (resumeMsg == null) { 1236 // null resumeMsg implies saving password silently 1237 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1238 } else { 1239 final Message remember = mPrivateHandler.obtainMessage( 1240 REMEMBER_PASSWORD); 1241 remember.getData().putString("host", schemePlusHost); 1242 remember.getData().putString("username", username); 1243 remember.getData().putString("password", password); 1244 remember.obj = resumeMsg; 1245 1246 final Message neverRemember = mPrivateHandler.obtainMessage( 1247 NEVER_REMEMBER_PASSWORD); 1248 neverRemember.getData().putString("host", schemePlusHost); 1249 neverRemember.getData().putString("username", username); 1250 neverRemember.getData().putString("password", password); 1251 neverRemember.obj = resumeMsg; 1252 1253 new AlertDialog.Builder(getContext()) 1254 .setTitle(com.android.internal.R.string.save_password_label) 1255 .setMessage(com.android.internal.R.string.save_password_message) 1256 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1257 new DialogInterface.OnClickListener() { 1258 public void onClick(DialogInterface dialog, int which) { 1259 resumeMsg.sendToTarget(); 1260 } 1261 }) 1262 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1263 new DialogInterface.OnClickListener() { 1264 public void onClick(DialogInterface dialog, int which) { 1265 remember.sendToTarget(); 1266 } 1267 }) 1268 .setNegativeButton(com.android.internal.R.string.save_password_never, 1269 new DialogInterface.OnClickListener() { 1270 public void onClick(DialogInterface dialog, int which) { 1271 neverRemember.sendToTarget(); 1272 } 1273 }) 1274 .setOnCancelListener(new OnCancelListener() { 1275 public void onCancel(DialogInterface dialog) { 1276 resumeMsg.sendToTarget(); 1277 } 1278 }).show(); 1279 // Return true so that WebViewCore will pause while the dialog is 1280 // up. 1281 rVal = true; 1282 } 1283 return rVal; 1284 } 1285 1286 @Override 1287 public void setScrollBarStyle(int style) { 1288 if (style == View.SCROLLBARS_INSIDE_INSET 1289 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1290 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1291 } else { 1292 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1293 } 1294 super.setScrollBarStyle(style); 1295 } 1296 1297 /** 1298 * Specify whether the horizontal scrollbar has overlay style. 1299 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1300 */ 1301 public void setHorizontalScrollbarOverlay(boolean overlay) { 1302 mOverlayHorizontalScrollbar = overlay; 1303 } 1304 1305 /** 1306 * Specify whether the vertical scrollbar has overlay style. 1307 * @param overlay TRUE if vertical scrollbar should have overlay style. 1308 */ 1309 public void setVerticalScrollbarOverlay(boolean overlay) { 1310 mOverlayVerticalScrollbar = overlay; 1311 } 1312 1313 /** 1314 * Return whether horizontal scrollbar has overlay style 1315 * @return TRUE if horizontal scrollbar has overlay style. 1316 */ 1317 public boolean overlayHorizontalScrollbar() { 1318 return mOverlayHorizontalScrollbar; 1319 } 1320 1321 /** 1322 * Return whether vertical scrollbar has overlay style 1323 * @return TRUE if vertical scrollbar has overlay style. 1324 */ 1325 public boolean overlayVerticalScrollbar() { 1326 return mOverlayVerticalScrollbar; 1327 } 1328 1329 /* 1330 * Return the width of the view where the content of WebView should render 1331 * to. 1332 * Note: this can be called from WebCoreThread. 1333 */ 1334 /* package */ int getViewWidth() { 1335 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1336 return getWidth(); 1337 } else { 1338 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1339 } 1340 } 1341 1342 /** 1343 * returns the height of the titlebarview (if any). Does not care about 1344 * scrolling 1345 * @hide 1346 */ 1347 protected int getTitleHeight() { 1348 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1349 } 1350 1351 /* 1352 * Return the amount of the titlebarview (if any) that is visible 1353 * 1354 * @hide 1355 */ 1356 public int getVisibleTitleHeight() { 1357 // need to restrict mScrollY due to over scroll 1358 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1359 } 1360 1361 /* 1362 * Return the height of the view where the content of WebView should render 1363 * to. Note that this excludes mTitleBar, if there is one. 1364 * Note: this can be called from WebCoreThread. 1365 */ 1366 /* package */ int getViewHeight() { 1367 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1368 } 1369 1370 private int getViewHeightWithTitle() { 1371 int height = getHeight(); 1372 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1373 height -= getHorizontalScrollbarHeight(); 1374 } 1375 return height; 1376 } 1377 1378 /** 1379 * @return The SSL certificate for the main top-level page or null if 1380 * there is no certificate (the site is not secure). 1381 */ 1382 public SslCertificate getCertificate() { 1383 return mCertificate; 1384 } 1385 1386 /** 1387 * Sets the SSL certificate for the main top-level page. 1388 */ 1389 public void setCertificate(SslCertificate certificate) { 1390 if (DebugFlags.WEB_VIEW) { 1391 Log.v(LOGTAG, "setCertificate=" + certificate); 1392 } 1393 // here, the certificate can be null (if the site is not secure) 1394 mCertificate = certificate; 1395 } 1396 1397 //------------------------------------------------------------------------- 1398 // Methods called by activity 1399 //------------------------------------------------------------------------- 1400 1401 /** 1402 * Save the username and password for a particular host in the WebView's 1403 * internal database. 1404 * @param host The host that required the credentials. 1405 * @param username The username for the given host. 1406 * @param password The password for the given host. 1407 */ 1408 public void savePassword(String host, String username, String password) { 1409 mDatabase.setUsernamePassword(host, username, password); 1410 } 1411 1412 /** 1413 * Set the HTTP authentication credentials for a given host and realm. 1414 * 1415 * @param host The host for the credentials. 1416 * @param realm The realm for the credentials. 1417 * @param username The username for the password. If it is null, it means 1418 * password can't be saved. 1419 * @param password The password 1420 */ 1421 public void setHttpAuthUsernamePassword(String host, String realm, 1422 String username, String password) { 1423 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1424 } 1425 1426 /** 1427 * Retrieve the HTTP authentication username and password for a given 1428 * host & realm pair 1429 * 1430 * @param host The host for which the credentials apply. 1431 * @param realm The realm for which the credentials apply. 1432 * @return String[] if found, String[0] is username, which can be null and 1433 * String[1] is password. Return null if it can't find anything. 1434 */ 1435 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1436 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1437 } 1438 1439 /** 1440 * Remove Find or Select ActionModes, if active. 1441 */ 1442 private void clearActionModes() { 1443 if (mSelectCallback != null) { 1444 mSelectCallback.finish(); 1445 } 1446 if (mFindCallback != null) { 1447 mFindCallback.finish(); 1448 } 1449 } 1450 1451 /** 1452 * Called to clear state when moving from one page to another, or changing 1453 * in some other way that makes elements associated with the current page 1454 * (such as WebTextView or ActionModes) no longer relevant. 1455 */ 1456 private void clearHelpers() { 1457 clearTextEntry(); 1458 clearActionModes(); 1459 dismissFullScreenMode(); 1460 } 1461 1462 /** 1463 * Destroy the internal state of the WebView. This method should be called 1464 * after the WebView has been removed from the view system. No other 1465 * methods may be called on a WebView after destroy. 1466 */ 1467 public void destroy() { 1468 clearHelpers(); 1469 if (mListBoxDialog != null) { 1470 mListBoxDialog.dismiss(); 1471 mListBoxDialog = null; 1472 } 1473 if (mNativeClass != 0) nativeStopGL(); 1474 if (mWebViewCore != null) { 1475 // Set the handlers to null before destroying WebViewCore so no 1476 // more messages will be posted. 1477 mCallbackProxy.setWebViewClient(null); 1478 mCallbackProxy.setWebChromeClient(null); 1479 // Tell WebViewCore to destroy itself 1480 synchronized (this) { 1481 WebViewCore webViewCore = mWebViewCore; 1482 mWebViewCore = null; // prevent using partial webViewCore 1483 webViewCore.destroy(); 1484 } 1485 // Remove any pending messages that might not be serviced yet. 1486 mPrivateHandler.removeCallbacksAndMessages(null); 1487 mCallbackProxy.removeCallbacksAndMessages(null); 1488 // Wake up the WebCore thread just in case it is waiting for a 1489 // JavaScript dialog. 1490 synchronized (mCallbackProxy) { 1491 mCallbackProxy.notify(); 1492 } 1493 } 1494 if (mNativeClass != 0) { 1495 nativeDestroy(); 1496 mNativeClass = 0; 1497 } 1498 } 1499 1500 /** 1501 * Enables platform notifications of data state and proxy changes. 1502 */ 1503 public static void enablePlatformNotifications() { 1504 Network.enablePlatformNotifications(); 1505 } 1506 1507 /** 1508 * If platform notifications are enabled, this should be called 1509 * from the Activity's onPause() or onStop(). 1510 */ 1511 public static void disablePlatformNotifications() { 1512 Network.disablePlatformNotifications(); 1513 } 1514 1515 /** 1516 * Sets JavaScript engine flags. 1517 * 1518 * @param flags JS engine flags in a String 1519 * 1520 * @hide pending API solidification 1521 */ 1522 public void setJsFlags(String flags) { 1523 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1524 } 1525 1526 /** 1527 * Inform WebView of the network state. This is used to set 1528 * the JavaScript property window.navigator.isOnline and 1529 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1530 * @param networkUp boolean indicating if network is available 1531 */ 1532 public void setNetworkAvailable(boolean networkUp) { 1533 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1534 networkUp ? 1 : 0, 0); 1535 } 1536 1537 /** 1538 * Inform WebView about the current network type. 1539 * {@hide} 1540 */ 1541 public void setNetworkType(String type, String subtype) { 1542 Map<String, String> map = new HashMap<String, String>(); 1543 map.put("type", type); 1544 map.put("subtype", subtype); 1545 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1546 } 1547 /** 1548 * Save the state of this WebView used in 1549 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1550 * method no longer stores the display data for this WebView. The previous 1551 * behavior could potentially leak files if {@link #restoreState} was never 1552 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1553 * and restoring the display data. 1554 * @param outState The Bundle to store the WebView state. 1555 * @return The same copy of the back/forward list used to save the state. If 1556 * saveState fails, the returned list will be null. 1557 * @see #savePicture 1558 * @see #restorePicture 1559 */ 1560 public WebBackForwardList saveState(Bundle outState) { 1561 if (outState == null) { 1562 return null; 1563 } 1564 // We grab a copy of the back/forward list because a client of WebView 1565 // may have invalidated the history list by calling clearHistory. 1566 WebBackForwardList list = copyBackForwardList(); 1567 final int currentIndex = list.getCurrentIndex(); 1568 final int size = list.getSize(); 1569 // We should fail saving the state if the list is empty or the index is 1570 // not in a valid range. 1571 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1572 return null; 1573 } 1574 outState.putInt("index", currentIndex); 1575 // FIXME: This should just be a byte[][] instead of ArrayList but 1576 // Parcel.java does not have the code to handle multi-dimensional 1577 // arrays. 1578 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1579 for (int i = 0; i < size; i++) { 1580 WebHistoryItem item = list.getItemAtIndex(i); 1581 if (null == item) { 1582 // FIXME: this shouldn't happen 1583 // need to determine how item got set to null 1584 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1585 return null; 1586 } 1587 byte[] data = item.getFlattenedData(); 1588 if (data == null) { 1589 // It would be very odd to not have any data for a given history 1590 // item. And we will fail to rebuild the history list without 1591 // flattened data. 1592 return null; 1593 } 1594 history.add(data); 1595 } 1596 outState.putSerializable("history", history); 1597 if (mCertificate != null) { 1598 outState.putBundle("certificate", 1599 SslCertificate.saveState(mCertificate)); 1600 } 1601 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1602 mZoomManager.saveZoomState(outState); 1603 return list; 1604 } 1605 1606 /** 1607 * Save the current display data to the Bundle given. Used in conjunction 1608 * with {@link #saveState}. 1609 * @param b A Bundle to store the display data. 1610 * @param dest The file to store the serialized picture data. Will be 1611 * overwritten with this WebView's picture data. 1612 * @return True if the picture was successfully saved. 1613 */ 1614 public boolean savePicture(Bundle b, final File dest) { 1615 if (dest == null || b == null) { 1616 return false; 1617 } 1618 final Picture p = capturePicture(); 1619 // Use a temporary file while writing to ensure the destination file 1620 // contains valid data. 1621 final File temp = new File(dest.getPath() + ".writing"); 1622 new Thread(new Runnable() { 1623 public void run() { 1624 FileOutputStream out = null; 1625 try { 1626 out = new FileOutputStream(temp); 1627 p.writeToStream(out); 1628 // Writing the picture succeeded, rename the temporary file 1629 // to the destination. 1630 temp.renameTo(dest); 1631 } catch (Exception e) { 1632 // too late to do anything about it. 1633 } finally { 1634 if (out != null) { 1635 try { 1636 out.close(); 1637 } catch (Exception e) { 1638 // Can't do anything about that 1639 } 1640 } 1641 temp.delete(); 1642 } 1643 } 1644 }).start(); 1645 // now update the bundle 1646 b.putInt("scrollX", mScrollX); 1647 b.putInt("scrollY", mScrollY); 1648 mZoomManager.saveZoomState(b); 1649 return true; 1650 } 1651 1652 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1653 int sx = b.getInt("scrollX", 0); 1654 int sy = b.getInt("scrollY", 0); 1655 1656 mDrawHistory = true; 1657 mHistoryPicture = p; 1658 mScrollX = sx; 1659 mScrollY = sy; 1660 mZoomManager.restoreZoomState(b); 1661 final float scale = mZoomManager.getScale(); 1662 mHistoryWidth = Math.round(p.getWidth() * scale); 1663 mHistoryHeight = Math.round(p.getHeight() * scale); 1664 1665 invalidate(); 1666 } 1667 1668 /** 1669 * Restore the display data that was save in {@link #savePicture}. Used in 1670 * conjunction with {@link #restoreState}. 1671 * @param b A Bundle containing the saved display data. 1672 * @param src The file where the picture data was stored. 1673 * @return True if the picture was successfully restored. 1674 */ 1675 public boolean restorePicture(Bundle b, File src) { 1676 if (src == null || b == null) { 1677 return false; 1678 } 1679 if (!src.exists()) { 1680 return false; 1681 } 1682 try { 1683 final FileInputStream in = new FileInputStream(src); 1684 final Bundle copy = new Bundle(b); 1685 new Thread(new Runnable() { 1686 public void run() { 1687 try { 1688 final Picture p = Picture.createFromStream(in); 1689 if (p != null) { 1690 // Post a runnable on the main thread to update the 1691 // history picture fields. 1692 mPrivateHandler.post(new Runnable() { 1693 public void run() { 1694 restoreHistoryPictureFields(p, copy); 1695 } 1696 }); 1697 } 1698 } finally { 1699 try { 1700 in.close(); 1701 } catch (Exception e) { 1702 // Nothing we can do now. 1703 } 1704 } 1705 } 1706 }).start(); 1707 } catch (FileNotFoundException e){ 1708 e.printStackTrace(); 1709 } 1710 return true; 1711 } 1712 1713 /** 1714 * Restore the state of this WebView from the given map used in 1715 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1716 * be called to restore the state of the WebView before using the object. If 1717 * it is called after the WebView has had a chance to build state (load 1718 * pages, create a back/forward list, etc.) there may be undesirable 1719 * side-effects. Please note that this method no longer restores the 1720 * display data for this WebView. See {@link #savePicture} and {@link 1721 * #restorePicture} for saving and restoring the display data. 1722 * @param inState The incoming Bundle of state. 1723 * @return The restored back/forward list or null if restoreState failed. 1724 * @see #savePicture 1725 * @see #restorePicture 1726 */ 1727 public WebBackForwardList restoreState(Bundle inState) { 1728 WebBackForwardList returnList = null; 1729 if (inState == null) { 1730 return returnList; 1731 } 1732 if (inState.containsKey("index") && inState.containsKey("history")) { 1733 mCertificate = SslCertificate.restoreState( 1734 inState.getBundle("certificate")); 1735 1736 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1737 final int index = inState.getInt("index"); 1738 // We can't use a clone of the list because we need to modify the 1739 // shared copy, so synchronize instead to prevent concurrent 1740 // modifications. 1741 synchronized (list) { 1742 final List<byte[]> history = 1743 (List<byte[]>) inState.getSerializable("history"); 1744 final int size = history.size(); 1745 // Check the index bounds so we don't crash in native code while 1746 // restoring the history index. 1747 if (index < 0 || index >= size) { 1748 return null; 1749 } 1750 for (int i = 0; i < size; i++) { 1751 byte[] data = history.remove(0); 1752 if (data == null) { 1753 // If we somehow have null data, we cannot reconstruct 1754 // the item and thus our history list cannot be rebuilt. 1755 return null; 1756 } 1757 WebHistoryItem item = new WebHistoryItem(data); 1758 list.addHistoryItem(item); 1759 } 1760 // Grab the most recent copy to return to the caller. 1761 returnList = copyBackForwardList(); 1762 // Update the copy to have the correct index. 1763 returnList.setCurrentIndex(index); 1764 } 1765 // Restore private browsing setting. 1766 if (inState.getBoolean("privateBrowsingEnabled")) { 1767 getSettings().setPrivateBrowsingEnabled(true); 1768 } 1769 mZoomManager.restoreZoomState(inState); 1770 // Remove all pending messages because we are restoring previous 1771 // state. 1772 mWebViewCore.removeMessages(); 1773 // Send a restore state message. 1774 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1775 } 1776 return returnList; 1777 } 1778 1779 /** 1780 * Load the given url with the extra headers. 1781 * @param url The url of the resource to load. 1782 * @param extraHeaders The extra headers sent with this url. This should not 1783 * include the common headers like "user-agent". If it does, it 1784 * will be replaced by the intrinsic value of the WebView. 1785 */ 1786 public void loadUrl(String url, Map<String, String> extraHeaders) { 1787 switchOutDrawHistory(); 1788 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1789 arg.mUrl = url; 1790 arg.mExtraHeaders = extraHeaders; 1791 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1792 clearHelpers(); 1793 } 1794 1795 /** 1796 * Load the given url. 1797 * @param url The url of the resource to load. 1798 */ 1799 public void loadUrl(String url) { 1800 if (url == null) { 1801 return; 1802 } 1803 loadUrl(url, null); 1804 } 1805 1806 /** 1807 * Load the url with postData using "POST" method into the WebView. If url 1808 * is not a network url, it will be loaded with {link 1809 * {@link #loadUrl(String)} instead. 1810 * 1811 * @param url The url of the resource to load. 1812 * @param postData The data will be passed to "POST" request. 1813 */ 1814 public void postUrl(String url, byte[] postData) { 1815 if (URLUtil.isNetworkUrl(url)) { 1816 switchOutDrawHistory(); 1817 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1818 arg.mUrl = url; 1819 arg.mPostData = postData; 1820 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1821 clearHelpers(); 1822 } else { 1823 loadUrl(url); 1824 } 1825 } 1826 1827 /** 1828 * Load the given data into the WebView. This will load the data into 1829 * WebView using the data: scheme. Content loaded through this mechanism 1830 * does not have the ability to load content from the network. 1831 * @param data A String of data in the given encoding. The date must 1832 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1833 * %27, %3f respectively. 1834 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1835 * @param encoding The encoding of the data. i.e. utf-8, base64 1836 */ 1837 public void loadData(String data, String mimeType, String encoding) { 1838 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1839 } 1840 1841 /** 1842 * Load the given data into the WebView, use the provided URL as the base 1843 * URL for the content. The base URL is the URL that represents the page 1844 * that is loaded through this interface. As such, it is used to resolve any 1845 * relative URLs. The historyUrl is used for the history entry. 1846 * <p> 1847 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1848 * files through "file:///android_asset/" for the sub resources is more 1849 * restricted. If you provide null or empty string as baseUrl, you won't be 1850 * able to access asset files. If the baseUrl is anything other than 1851 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1852 * sub resources. 1853 * 1854 * @param baseUrl Url to resolve relative paths with, if null defaults to 1855 * "about:blank" 1856 * @param data A String of data in the given encoding. 1857 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1858 * defaults to "text/html" 1859 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1860 * @param historyUrl URL to use as the history entry. Can be null. 1861 */ 1862 public void loadDataWithBaseURL(String baseUrl, String data, 1863 String mimeType, String encoding, String historyUrl) { 1864 1865 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1866 loadData(data, mimeType, encoding); 1867 return; 1868 } 1869 switchOutDrawHistory(); 1870 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1871 arg.mBaseUrl = baseUrl; 1872 arg.mData = data; 1873 arg.mMimeType = mimeType; 1874 arg.mEncoding = encoding; 1875 arg.mHistoryUrl = historyUrl; 1876 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1877 clearHelpers(); 1878 } 1879 1880 /** 1881 * Saves the current view as a web archive. 1882 * 1883 * @param filename The filename where the archive should be placed. 1884 */ 1885 public void saveWebArchive(String filename) { 1886 saveWebArchive(filename, false, null); 1887 } 1888 1889 /* package */ static class SaveWebArchiveMessage { 1890 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1891 mBasename = basename; 1892 mAutoname = autoname; 1893 mCallback = callback; 1894 } 1895 1896 /* package */ final String mBasename; 1897 /* package */ final boolean mAutoname; 1898 /* package */ final ValueCallback<String> mCallback; 1899 /* package */ String mResultFile; 1900 } 1901 1902 /** 1903 * Saves the current view as a web archive. 1904 * 1905 * @param basename The filename where the archive should be placed. 1906 * @param autoname If false, takes basename to be a file. If true, basename 1907 * is assumed to be a directory in which a filename will be 1908 * chosen according to the url of the current page. 1909 * @param callback Called after the web archive has been saved. The 1910 * parameter for onReceiveValue will either be the filename 1911 * under which the file was saved, or null if saving the 1912 * file failed. 1913 */ 1914 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1915 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1916 new SaveWebArchiveMessage(basename, autoname, callback)); 1917 } 1918 1919 /** 1920 * Stop the current load. 1921 */ 1922 public void stopLoading() { 1923 // TODO: should we clear all the messages in the queue before sending 1924 // STOP_LOADING? 1925 switchOutDrawHistory(); 1926 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1927 } 1928 1929 /** 1930 * Reload the current url. 1931 */ 1932 public void reload() { 1933 clearHelpers(); 1934 switchOutDrawHistory(); 1935 mWebViewCore.sendMessage(EventHub.RELOAD); 1936 } 1937 1938 /** 1939 * Return true if this WebView has a back history item. 1940 * @return True iff this WebView has a back history item. 1941 */ 1942 public boolean canGoBack() { 1943 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1944 synchronized (l) { 1945 if (l.getClearPending()) { 1946 return false; 1947 } else { 1948 return l.getCurrentIndex() > 0; 1949 } 1950 } 1951 } 1952 1953 /** 1954 * Go back in the history of this WebView. 1955 */ 1956 public void goBack() { 1957 goBackOrForward(-1); 1958 } 1959 1960 /** 1961 * Return true if this WebView has a forward history item. 1962 * @return True iff this Webview has a forward history item. 1963 */ 1964 public boolean canGoForward() { 1965 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1966 synchronized (l) { 1967 if (l.getClearPending()) { 1968 return false; 1969 } else { 1970 return l.getCurrentIndex() < l.getSize() - 1; 1971 } 1972 } 1973 } 1974 1975 /** 1976 * Go forward in the history of this WebView. 1977 */ 1978 public void goForward() { 1979 goBackOrForward(1); 1980 } 1981 1982 /** 1983 * Return true if the page can go back or forward the given 1984 * number of steps. 1985 * @param steps The negative or positive number of steps to move the 1986 * history. 1987 */ 1988 public boolean canGoBackOrForward(int steps) { 1989 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1990 synchronized (l) { 1991 if (l.getClearPending()) { 1992 return false; 1993 } else { 1994 int newIndex = l.getCurrentIndex() + steps; 1995 return newIndex >= 0 && newIndex < l.getSize(); 1996 } 1997 } 1998 } 1999 2000 /** 2001 * Go to the history item that is the number of steps away from 2002 * the current item. Steps is negative if backward and positive 2003 * if forward. 2004 * @param steps The number of steps to take back or forward in the back 2005 * forward list. 2006 */ 2007 public void goBackOrForward(int steps) { 2008 goBackOrForward(steps, false); 2009 } 2010 2011 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2012 if (steps != 0) { 2013 clearHelpers(); 2014 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2015 ignoreSnapshot ? 1 : 0); 2016 } 2017 } 2018 2019 /** 2020 * Returns true if private browsing is enabled in this WebView. 2021 */ 2022 public boolean isPrivateBrowsingEnabled() { 2023 return getSettings().isPrivateBrowsingEnabled(); 2024 } 2025 2026 private void startPrivateBrowsing() { 2027 getSettings().setPrivateBrowsingEnabled(true); 2028 } 2029 2030 private boolean extendScroll(int y) { 2031 int finalY = mScroller.getFinalY(); 2032 int newY = pinLocY(finalY + y); 2033 if (newY == finalY) return false; 2034 mScroller.setFinalY(newY); 2035 mScroller.extendDuration(computeDuration(0, y)); 2036 return true; 2037 } 2038 2039 /** 2040 * Scroll the contents of the view up by half the view size 2041 * @param top true to jump to the top of the page 2042 * @return true if the page was scrolled 2043 */ 2044 public boolean pageUp(boolean top) { 2045 if (mNativeClass == 0) { 2046 return false; 2047 } 2048 nativeClearCursor(); // start next trackball movement from page edge 2049 if (top) { 2050 // go to the top of the document 2051 return pinScrollTo(mScrollX, 0, true, 0); 2052 } 2053 // Page up 2054 int h = getHeight(); 2055 int y; 2056 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2057 y = -h + PAGE_SCROLL_OVERLAP; 2058 } else { 2059 y = -h / 2; 2060 } 2061 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2062 : extendScroll(y); 2063 } 2064 2065 /** 2066 * Scroll the contents of the view down by half the page size 2067 * @param bottom true to jump to bottom of page 2068 * @return true if the page was scrolled 2069 */ 2070 public boolean pageDown(boolean bottom) { 2071 if (mNativeClass == 0) { 2072 return false; 2073 } 2074 nativeClearCursor(); // start next trackball movement from page edge 2075 if (bottom) { 2076 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2077 } 2078 // Page down. 2079 int h = getHeight(); 2080 int y; 2081 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2082 y = h - PAGE_SCROLL_OVERLAP; 2083 } else { 2084 y = h / 2; 2085 } 2086 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2087 : extendScroll(y); 2088 } 2089 2090 /** 2091 * Clear the view so that onDraw() will draw nothing but white background, 2092 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2093 */ 2094 public void clearView() { 2095 mContentWidth = 0; 2096 mContentHeight = 0; 2097 setBaseLayer(0, null, false); 2098 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2099 } 2100 2101 /** 2102 * Return a new picture that captures the current display of the webview. 2103 * This is a copy of the display, and will be unaffected if the webview 2104 * later loads a different URL. 2105 * 2106 * @return a picture containing the current contents of the view. Note this 2107 * picture is of the entire document, and is not restricted to the 2108 * bounds of the view. 2109 */ 2110 public Picture capturePicture() { 2111 if (mNativeClass == 0) return null; 2112 Picture result = new Picture(); 2113 nativeCopyBaseContentToPicture(result); 2114 return result; 2115 } 2116 2117 /** 2118 * Return true if the browser is displaying a TextView for text input. 2119 */ 2120 private boolean inEditingMode() { 2121 return mWebTextView != null && mWebTextView.getParent() != null; 2122 } 2123 2124 /** 2125 * Remove the WebTextView. 2126 */ 2127 private void clearTextEntry() { 2128 if (inEditingMode()) { 2129 mWebTextView.remove(); 2130 } else { 2131 // The keyboard may be open with the WebView as the served view 2132 hideSoftKeyboard(); 2133 } 2134 } 2135 2136 /** 2137 * Return the current scale of the WebView 2138 * @return The current scale. 2139 */ 2140 public float getScale() { 2141 return mZoomManager.getScale(); 2142 } 2143 2144 /** 2145 * Set the initial scale for the WebView. 0 means default. If 2146 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2147 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2148 * WebView starts will this value as initial scale. 2149 * 2150 * @param scaleInPercent The initial scale in percent. 2151 */ 2152 public void setInitialScale(int scaleInPercent) { 2153 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2154 } 2155 2156 /** 2157 * Invoke the graphical zoom picker widget for this WebView. This will 2158 * result in the zoom widget appearing on the screen to control the zoom 2159 * level of this WebView. 2160 */ 2161 public void invokeZoomPicker() { 2162 if (!getSettings().supportZoom()) { 2163 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2164 return; 2165 } 2166 clearHelpers(); 2167 mZoomManager.invokeZoomPicker(); 2168 } 2169 2170 /** 2171 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2172 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2173 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2174 * anchor does not have a url or if it is a JavaScript url, the type will 2175 * be UNKNOWN_TYPE and the url has to be retrieved through 2176 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2177 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2178 * the "extra" field. A type of 2179 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2180 * a child node. If a phone number is found, the HitTestResult type is set 2181 * to PHONE_TYPE and the phone number is set in the "extra" field of 2182 * HitTestResult. If a map address is found, the HitTestResult type is set 2183 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2184 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2185 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2186 * HitTestResult type is set to UNKNOWN_TYPE. 2187 */ 2188 public HitTestResult getHitTestResult() { 2189 return hitTestResult(mInitialHitTestResult); 2190 } 2191 2192 private HitTestResult hitTestResult(HitTestResult fallback) { 2193 if (mNativeClass == 0) { 2194 return null; 2195 } 2196 2197 HitTestResult result = new HitTestResult(); 2198 if (nativeHasCursorNode()) { 2199 if (nativeCursorIsTextInput()) { 2200 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2201 } else { 2202 String text = nativeCursorText(); 2203 if (text != null) { 2204 if (text.startsWith(SCHEME_TEL)) { 2205 result.setType(HitTestResult.PHONE_TYPE); 2206 result.setExtra(text.substring(SCHEME_TEL.length())); 2207 } else if (text.startsWith(SCHEME_MAILTO)) { 2208 result.setType(HitTestResult.EMAIL_TYPE); 2209 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2210 } else if (text.startsWith(SCHEME_GEO)) { 2211 result.setType(HitTestResult.GEO_TYPE); 2212 result.setExtra(URLDecoder.decode(text 2213 .substring(SCHEME_GEO.length()))); 2214 } else if (nativeCursorIsAnchor()) { 2215 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2216 result.setExtra(text); 2217 } 2218 } 2219 } 2220 } else if (fallback != null) { 2221 /* If webkit causes a rebuild while the long press is in progress, 2222 * the cursor node may be reset, even if it is still around. This 2223 * uses the cursor node saved when the touch began. Since the 2224 * nativeImageURI below only changes the result if it is successful, 2225 * this uses the data beneath the touch if available or the original 2226 * tap data otherwise. 2227 */ 2228 Log.v(LOGTAG, "hitTestResult use fallback"); 2229 result = fallback; 2230 } 2231 int type = result.getType(); 2232 if (type == HitTestResult.UNKNOWN_TYPE 2233 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2234 // Now check to see if it is an image. 2235 int contentX = viewToContentX(mLastTouchX + mScrollX); 2236 int contentY = viewToContentY(mLastTouchY + mScrollY); 2237 String text = nativeImageURI(contentX, contentY); 2238 if (text != null) { 2239 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2240 HitTestResult.IMAGE_TYPE : 2241 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2242 result.setExtra(text); 2243 } 2244 } 2245 return result; 2246 } 2247 2248 // Called by JNI when the DOM has changed the focus. Clear the focus so 2249 // that new keys will go to the newly focused field 2250 private void domChangedFocus() { 2251 if (inEditingMode()) { 2252 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2253 } 2254 } 2255 /** 2256 * Request the anchor or image element URL at the last tapped point. 2257 * If hrefMsg is null, this method returns immediately and does not 2258 * dispatch hrefMsg to its target. If the tapped point hits an image, 2259 * an anchor, or an image in an anchor, the message associates 2260 * strings in named keys in its data. The value paired with the key 2261 * may be an empty string. 2262 * 2263 * @param hrefMsg This message will be dispatched with the result of the 2264 * request. The message data contains three keys: 2265 * - "url" returns the anchor's href attribute. 2266 * - "title" returns the anchor's text. 2267 * - "src" returns the image's src attribute. 2268 */ 2269 public void requestFocusNodeHref(Message hrefMsg) { 2270 if (hrefMsg == null) { 2271 return; 2272 } 2273 int contentX = viewToContentX(mLastTouchX + mScrollX); 2274 int contentY = viewToContentY(mLastTouchY + mScrollY); 2275 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2276 contentX, contentY, hrefMsg); 2277 } 2278 2279 /** 2280 * Request the url of the image last touched by the user. msg will be sent 2281 * to its target with a String representing the url as its object. 2282 * 2283 * @param msg This message will be dispatched with the result of the request 2284 * as the data member with "url" as key. The result can be null. 2285 */ 2286 public void requestImageRef(Message msg) { 2287 if (0 == mNativeClass) return; // client isn't initialized 2288 int contentX = viewToContentX(mLastTouchX + mScrollX); 2289 int contentY = viewToContentY(mLastTouchY + mScrollY); 2290 String ref = nativeImageURI(contentX, contentY); 2291 Bundle data = msg.getData(); 2292 data.putString("url", ref); 2293 msg.setData(data); 2294 msg.sendToTarget(); 2295 } 2296 2297 static int pinLoc(int x, int viewMax, int docMax) { 2298// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2299 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2300 // pin the short document to the top/left of the screen 2301 x = 0; 2302// Log.d(LOGTAG, "--- center " + x); 2303 } else if (x < 0) { 2304 x = 0; 2305// Log.d(LOGTAG, "--- zero"); 2306 } else if (x + viewMax > docMax) { 2307 x = docMax - viewMax; 2308// Log.d(LOGTAG, "--- pin " + x); 2309 } 2310 return x; 2311 } 2312 2313 // Expects x in view coordinates 2314 int pinLocX(int x) { 2315 if (mInOverScrollMode) return x; 2316 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2317 } 2318 2319 // Expects y in view coordinates 2320 int pinLocY(int y) { 2321 if (mInOverScrollMode) return y; 2322 return pinLoc(y, getViewHeightWithTitle(), 2323 computeRealVerticalScrollRange() + getTitleHeight()); 2324 } 2325 2326 /** 2327 * A title bar which is embedded in this WebView, and scrolls along with it 2328 * vertically, but not horizontally. 2329 */ 2330 private View mTitleBar; 2331 2332 /** 2333 * the title bar rendering gravity 2334 */ 2335 private int mTitleGravity; 2336 2337 /** 2338 * Add or remove a title bar to be embedded into the WebView, and scroll 2339 * along with it vertically, while remaining in view horizontally. Pass 2340 * null to remove the title bar from the WebView, and return to drawing 2341 * the WebView normally without translating to account for the title bar. 2342 * @hide 2343 */ 2344 public void setEmbeddedTitleBar(View v) { 2345 if (mTitleBar == v) return; 2346 if (mTitleBar != null) { 2347 removeView(mTitleBar); 2348 } 2349 if (null != v) { 2350 addView(v, new AbsoluteLayout.LayoutParams( 2351 ViewGroup.LayoutParams.MATCH_PARENT, 2352 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2353 } 2354 mTitleBar = v; 2355 } 2356 2357 /** 2358 * Set where to render the embedded title bar 2359 * NO_GRAVITY at the top of the page 2360 * TOP at the top of the screen 2361 * @hide 2362 */ 2363 public void setTitleBarGravity(int gravity) { 2364 mTitleGravity = gravity; 2365 } 2366 2367 /** 2368 * Given a distance in view space, convert it to content space. Note: this 2369 * does not reflect translation, just scaling, so this should not be called 2370 * with coordinates, but should be called for dimensions like width or 2371 * height. 2372 */ 2373 private int viewToContentDimension(int d) { 2374 return Math.round(d * mZoomManager.getInvScale()); 2375 } 2376 2377 /** 2378 * Given an x coordinate in view space, convert it to content space. Also 2379 * may be used for absolute heights (such as for the WebTextView's 2380 * textSize, which is unaffected by the height of the title bar). 2381 */ 2382 /*package*/ int viewToContentX(int x) { 2383 return viewToContentDimension(x); 2384 } 2385 2386 /** 2387 * Given a y coordinate in view space, convert it to content space. 2388 * Takes into account the height of the title bar if there is one 2389 * embedded into the WebView. 2390 */ 2391 /*package*/ int viewToContentY(int y) { 2392 return viewToContentDimension(y - getTitleHeight()); 2393 } 2394 2395 /** 2396 * Given a x coordinate in view space, convert it to content space. 2397 * Returns the result as a float. 2398 */ 2399 private float viewToContentXf(int x) { 2400 return x * mZoomManager.getInvScale(); 2401 } 2402 2403 /** 2404 * Given a y coordinate in view space, convert it to content space. 2405 * Takes into account the height of the title bar if there is one 2406 * embedded into the WebView. Returns the result as a float. 2407 */ 2408 private float viewToContentYf(int y) { 2409 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2410 } 2411 2412 /** 2413 * Given a distance in content space, convert it to view space. Note: this 2414 * does not reflect translation, just scaling, so this should not be called 2415 * with coordinates, but should be called for dimensions like width or 2416 * height. 2417 */ 2418 /*package*/ int contentToViewDimension(int d) { 2419 return Math.round(d * mZoomManager.getScale()); 2420 } 2421 2422 /** 2423 * Given an x coordinate in content space, convert it to view 2424 * space. 2425 */ 2426 /*package*/ int contentToViewX(int x) { 2427 return contentToViewDimension(x); 2428 } 2429 2430 /** 2431 * Given a y coordinate in content space, convert it to view 2432 * space. Takes into account the height of the title bar. 2433 */ 2434 /*package*/ int contentToViewY(int y) { 2435 return contentToViewDimension(y) + getTitleHeight(); 2436 } 2437 2438 private Rect contentToViewRect(Rect x) { 2439 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2440 contentToViewX(x.right), contentToViewY(x.bottom)); 2441 } 2442 2443 /* To invalidate a rectangle in content coordinates, we need to transform 2444 the rect into view coordinates, so we can then call invalidate(...). 2445 2446 Normally, we would just call contentToView[XY](...), which eventually 2447 calls Math.round(coordinate * mActualScale). However, for invalidates, 2448 we need to account for the slop that occurs with antialiasing. To 2449 address that, we are a little more liberal in the size of the rect that 2450 we invalidate. 2451 2452 This liberal calculation calls floor() for the top/left, and ceil() for 2453 the bottom/right coordinates. This catches the possible extra pixels of 2454 antialiasing that we might have missed with just round(). 2455 */ 2456 2457 // Called by JNI to invalidate the View, given rectangle coordinates in 2458 // content space 2459 private void viewInvalidate(int l, int t, int r, int b) { 2460 final float scale = mZoomManager.getScale(); 2461 final int dy = getTitleHeight(); 2462 invalidate((int)Math.floor(l * scale), 2463 (int)Math.floor(t * scale) + dy, 2464 (int)Math.ceil(r * scale), 2465 (int)Math.ceil(b * scale) + dy); 2466 } 2467 2468 // Called by JNI to invalidate the View after a delay, given rectangle 2469 // coordinates in content space 2470 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2471 final float scale = mZoomManager.getScale(); 2472 final int dy = getTitleHeight(); 2473 postInvalidateDelayed(delay, 2474 (int)Math.floor(l * scale), 2475 (int)Math.floor(t * scale) + dy, 2476 (int)Math.ceil(r * scale), 2477 (int)Math.ceil(b * scale) + dy); 2478 } 2479 2480 private void invalidateContentRect(Rect r) { 2481 viewInvalidate(r.left, r.top, r.right, r.bottom); 2482 } 2483 2484 // stop the scroll animation, and don't let a subsequent fling add 2485 // to the existing velocity 2486 private void abortAnimation() { 2487 mScroller.abortAnimation(); 2488 mLastVelocity = 0; 2489 } 2490 2491 /* call from webcoreview.draw(), so we're still executing in the UI thread 2492 */ 2493 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2494 2495 // premature data from webkit, ignore 2496 if ((w | h) == 0) { 2497 return; 2498 } 2499 2500 // don't abort a scroll animation if we didn't change anything 2501 if (mContentWidth != w || mContentHeight != h) { 2502 // record new dimensions 2503 mContentWidth = w; 2504 mContentHeight = h; 2505 // If history Picture is drawn, don't update scroll. They will be 2506 // updated when we get out of that mode. 2507 if (!mDrawHistory) { 2508 // repin our scroll, taking into account the new content size 2509 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2510 if (!mScroller.isFinished()) { 2511 // We are in the middle of a scroll. Repin the final scroll 2512 // position. 2513 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2514 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2515 } 2516 } 2517 } 2518 contentSizeChanged(updateLayout); 2519 } 2520 2521 // Used to avoid sending many visible rect messages. 2522 private Rect mLastVisibleRectSent; 2523 private Rect mLastGlobalRect; 2524 2525 Rect sendOurVisibleRect() { 2526 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2527 Rect rect = new Rect(); 2528 calcOurContentVisibleRect(rect); 2529 // Rect.equals() checks for null input. 2530 if (!rect.equals(mLastVisibleRectSent)) { 2531 Point pos = new Point(rect.left, rect.top); 2532 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2533 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2534 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, pos); 2535 mLastVisibleRectSent = rect; 2536 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2537 } 2538 Rect globalRect = new Rect(); 2539 if (getGlobalVisibleRect(globalRect) 2540 && !globalRect.equals(mLastGlobalRect)) { 2541 if (DebugFlags.WEB_VIEW) { 2542 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2543 + globalRect.top + ",r=" + globalRect.right + ",b=" 2544 + globalRect.bottom); 2545 } 2546 // TODO: the global offset is only used by windowRect() 2547 // in ChromeClientAndroid ; other clients such as touch 2548 // and mouse events could return view + screen relative points. 2549 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2550 mLastGlobalRect = globalRect; 2551 } 2552 return rect; 2553 } 2554 2555 // Sets r to be the visible rectangle of our webview in view coordinates 2556 private void calcOurVisibleRect(Rect r) { 2557 Point p = new Point(); 2558 getGlobalVisibleRect(r, p); 2559 r.offset(-p.x, -p.y); 2560 } 2561 2562 // Sets r to be our visible rectangle in content coordinates 2563 private void calcOurContentVisibleRect(Rect r) { 2564 calcOurVisibleRect(r); 2565 r.left = viewToContentX(r.left); 2566 // viewToContentY will remove the total height of the title bar. Add 2567 // the visible height back in to account for the fact that if the title 2568 // bar is partially visible, the part of the visible rect which is 2569 // displaying our content is displaced by that amount. 2570 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2571 r.right = viewToContentX(r.right); 2572 r.bottom = viewToContentY(r.bottom); 2573 } 2574 2575 // Sets r to be our visible rectangle in content coordinates. We use this 2576 // method on the native side to compute the position of the fixed layers. 2577 // Uses floating coordinates (necessary to correctly place elements when 2578 // the scale factor is not 1) 2579 private void calcOurContentVisibleRectF(RectF r) { 2580 Rect ri = new Rect(0,0,0,0); 2581 calcOurVisibleRect(ri); 2582 r.left = viewToContentXf(ri.left); 2583 // viewToContentY will remove the total height of the title bar. Add 2584 // the visible height back in to account for the fact that if the title 2585 // bar is partially visible, the part of the visible rect which is 2586 // displaying our content is displaced by that amount. 2587 r.top = viewToContentYf(ri.top + getVisibleTitleHeight()); 2588 r.right = viewToContentXf(ri.right); 2589 r.bottom = viewToContentYf(ri.bottom); 2590 } 2591 2592 static class ViewSizeData { 2593 int mWidth; 2594 int mHeight; 2595 float mHeightWidthRatio; 2596 int mActualViewHeight; 2597 int mTextWrapWidth; 2598 int mAnchorX; 2599 int mAnchorY; 2600 float mScale; 2601 boolean mIgnoreHeight; 2602 } 2603 2604 /** 2605 * Compute unzoomed width and height, and if they differ from the last 2606 * values we sent, send them to webkit (to be used as new viewport) 2607 * 2608 * @param force ensures that the message is sent to webkit even if the width 2609 * or height has not changed since the last message 2610 * 2611 * @return true if new values were sent 2612 */ 2613 boolean sendViewSizeZoom(boolean force) { 2614 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2615 2616 int viewWidth = getViewWidth(); 2617 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2618 // This height could be fixed and be different from actual visible height. 2619 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2620 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2621 // Make the ratio more accurate than (newHeight / newWidth), since the 2622 // latter both are calculated and rounded. 2623 float heightWidthRatio = (float) viewHeight / viewWidth; 2624 /* 2625 * Because the native side may have already done a layout before the 2626 * View system was able to measure us, we have to send a height of 0 to 2627 * remove excess whitespace when we grow our width. This will trigger a 2628 * layout and a change in content size. This content size change will 2629 * mean that contentSizeChanged will either call this method directly or 2630 * indirectly from onSizeChanged. 2631 */ 2632 if (newWidth > mLastWidthSent && mWrapContent) { 2633 newHeight = 0; 2634 heightWidthRatio = 0; 2635 } 2636 // Actual visible content height. 2637 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2638 // Avoid sending another message if the dimensions have not changed. 2639 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2640 actualViewHeight != mLastActualHeightSent) { 2641 ViewSizeData data = new ViewSizeData(); 2642 data.mWidth = newWidth; 2643 data.mHeight = newHeight; 2644 data.mHeightWidthRatio = heightWidthRatio; 2645 data.mActualViewHeight = actualViewHeight; 2646 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2647 data.mScale = mZoomManager.getScale(); 2648 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2649 && !mHeightCanMeasure; 2650 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2651 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2652 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2653 mLastWidthSent = newWidth; 2654 mLastHeightSent = newHeight; 2655 mLastActualHeightSent = actualViewHeight; 2656 mZoomManager.clearDocumentAnchor(); 2657 return true; 2658 } 2659 return false; 2660 } 2661 2662 private int computeRealHorizontalScrollRange() { 2663 if (mDrawHistory) { 2664 return mHistoryWidth; 2665 } else { 2666 // to avoid rounding error caused unnecessary scrollbar, use floor 2667 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2668 } 2669 } 2670 2671 @Override 2672 protected int computeHorizontalScrollRange() { 2673 int range = computeRealHorizontalScrollRange(); 2674 2675 // Adjust reported range if overscrolled to compress the scroll bars 2676 final int scrollX = mScrollX; 2677 final int overscrollRight = computeMaxScrollX(); 2678 if (scrollX < 0) { 2679 range -= scrollX; 2680 } else if (scrollX > overscrollRight) { 2681 range += scrollX - overscrollRight; 2682 } 2683 2684 return range; 2685 } 2686 2687 @Override 2688 protected int computeHorizontalScrollOffset() { 2689 return Math.max(mScrollX, 0); 2690 } 2691 2692 private int computeRealVerticalScrollRange() { 2693 if (mDrawHistory) { 2694 return mHistoryHeight; 2695 } else { 2696 // to avoid rounding error caused unnecessary scrollbar, use floor 2697 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2698 } 2699 } 2700 2701 @Override 2702 protected int computeVerticalScrollRange() { 2703 int range = computeRealVerticalScrollRange(); 2704 2705 // Adjust reported range if overscrolled to compress the scroll bars 2706 final int scrollY = mScrollY; 2707 final int overscrollBottom = computeMaxScrollY(); 2708 if (scrollY < 0) { 2709 range -= scrollY; 2710 } else if (scrollY > overscrollBottom) { 2711 range += scrollY - overscrollBottom; 2712 } 2713 2714 return range; 2715 } 2716 2717 @Override 2718 protected int computeVerticalScrollOffset() { 2719 return Math.max(mScrollY - getTitleHeight(), 0); 2720 } 2721 2722 @Override 2723 protected int computeVerticalScrollExtent() { 2724 return getViewHeight(); 2725 } 2726 2727 /** @hide */ 2728 @Override 2729 protected void onDrawVerticalScrollBar(Canvas canvas, 2730 Drawable scrollBar, 2731 int l, int t, int r, int b) { 2732 if (mScrollY < 0) { 2733 t -= mScrollY; 2734 } 2735 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2736 scrollBar.draw(canvas); 2737 } 2738 2739 @Override 2740 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2741 boolean clampedY) { 2742 // Special-case layer scrolling so that we do not trigger normal scroll 2743 // updating. 2744 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2745 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2746 mScrollingLayerRect.left = scrollX; 2747 mScrollingLayerRect.top = scrollY; 2748 invalidate(); 2749 return; 2750 } 2751 mInOverScrollMode = false; 2752 int maxX = computeMaxScrollX(); 2753 int maxY = computeMaxScrollY(); 2754 if (maxX == 0) { 2755 // do not over scroll x if the page just fits the screen 2756 scrollX = pinLocX(scrollX); 2757 } else if (scrollX < 0 || scrollX > maxX) { 2758 mInOverScrollMode = true; 2759 } 2760 if (scrollY < 0 || scrollY > maxY) { 2761 mInOverScrollMode = true; 2762 } 2763 2764 int oldX = mScrollX; 2765 int oldY = mScrollY; 2766 2767 super.scrollTo(scrollX, scrollY); 2768 2769 if (mOverScrollGlow != null) { 2770 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2771 } 2772 } 2773 2774 /** 2775 * Get the url for the current page. This is not always the same as the url 2776 * passed to WebViewClient.onPageStarted because although the load for 2777 * that url has begun, the current page may not have changed. 2778 * @return The url for the current page. 2779 */ 2780 public String getUrl() { 2781 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2782 return h != null ? h.getUrl() : null; 2783 } 2784 2785 /** 2786 * Get the original url for the current page. This is not always the same 2787 * as the url passed to WebViewClient.onPageStarted because although the 2788 * load for that url has begun, the current page may not have changed. 2789 * Also, there may have been redirects resulting in a different url to that 2790 * originally requested. 2791 * @return The url that was originally requested for the current page. 2792 */ 2793 public String getOriginalUrl() { 2794 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2795 return h != null ? h.getOriginalUrl() : null; 2796 } 2797 2798 /** 2799 * Get the title for the current page. This is the title of the current page 2800 * until WebViewClient.onReceivedTitle is called. 2801 * @return The title for the current page. 2802 */ 2803 public String getTitle() { 2804 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2805 return h != null ? h.getTitle() : null; 2806 } 2807 2808 /** 2809 * Get the favicon for the current page. This is the favicon of the current 2810 * page until WebViewClient.onReceivedIcon is called. 2811 * @return The favicon for the current page. 2812 */ 2813 public Bitmap getFavicon() { 2814 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2815 return h != null ? h.getFavicon() : null; 2816 } 2817 2818 /** 2819 * Get the touch icon url for the apple-touch-icon <link> element, or 2820 * a URL on this site's server pointing to the standard location of a 2821 * touch icon. 2822 * @hide 2823 */ 2824 public String getTouchIconUrl() { 2825 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2826 return h != null ? h.getTouchIconUrl() : null; 2827 } 2828 2829 /** 2830 * Get the progress for the current page. 2831 * @return The progress for the current page between 0 and 100. 2832 */ 2833 public int getProgress() { 2834 return mCallbackProxy.getProgress(); 2835 } 2836 2837 /** 2838 * @return the height of the HTML content. 2839 */ 2840 public int getContentHeight() { 2841 return mContentHeight; 2842 } 2843 2844 /** 2845 * @return the width of the HTML content. 2846 * @hide 2847 */ 2848 public int getContentWidth() { 2849 return mContentWidth; 2850 } 2851 2852 /** 2853 * Pause all layout, parsing, and JavaScript timers for all webviews. This 2854 * is a global requests, not restricted to just this webview. This can be 2855 * useful if the application has been paused. 2856 */ 2857 public void pauseTimers() { 2858 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2859 } 2860 2861 /** 2862 * Resume all layout, parsing, and JavaScript timers for all webviews. 2863 * This will resume dispatching all timers. 2864 */ 2865 public void resumeTimers() { 2866 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2867 } 2868 2869 /** 2870 * Call this to pause any extra processing associated with this WebView and 2871 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 2872 * is taken offscreen, this could be called to reduce unnecessary CPU or 2873 * network traffic. When the WebView is again "active", call onResume(). 2874 * 2875 * Note that this differs from pauseTimers(), which affects all WebViews. 2876 */ 2877 public void onPause() { 2878 if (!mIsPaused) { 2879 mIsPaused = true; 2880 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2881 } 2882 } 2883 2884 /** 2885 * Call this to resume a WebView after a previous call to onPause(). 2886 */ 2887 public void onResume() { 2888 if (mIsPaused) { 2889 mIsPaused = false; 2890 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2891 } 2892 } 2893 2894 /** 2895 * Returns true if the view is paused, meaning onPause() was called. Calling 2896 * onResume() sets the paused state back to false. 2897 * @hide 2898 */ 2899 public boolean isPaused() { 2900 return mIsPaused; 2901 } 2902 2903 /** 2904 * Call this to inform the view that memory is low so that it can 2905 * free any available memory. 2906 */ 2907 public void freeMemory() { 2908 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2909 } 2910 2911 /** 2912 * Clear the resource cache. Note that the cache is per-application, so 2913 * this will clear the cache for all WebViews used. 2914 * 2915 * @param includeDiskFiles If false, only the RAM cache is cleared. 2916 */ 2917 public void clearCache(boolean includeDiskFiles) { 2918 // Note: this really needs to be a static method as it clears cache for all 2919 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2920 // we can't make this static. 2921 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2922 includeDiskFiles ? 1 : 0, 0); 2923 } 2924 2925 /** 2926 * Make sure that clearing the form data removes the adapter from the 2927 * currently focused textfield if there is one. 2928 */ 2929 public void clearFormData() { 2930 if (inEditingMode()) { 2931 AutoCompleteAdapter adapter = null; 2932 mWebTextView.setAdapterCustom(adapter); 2933 } 2934 } 2935 2936 /** 2937 * Tell the WebView to clear its internal back/forward list. 2938 */ 2939 public void clearHistory() { 2940 mCallbackProxy.getBackForwardList().setClearPending(); 2941 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2942 } 2943 2944 /** 2945 * Clear the SSL preferences table stored in response to proceeding with SSL 2946 * certificate errors. 2947 */ 2948 public void clearSslPreferences() { 2949 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2950 } 2951 2952 /** 2953 * Return the WebBackForwardList for this WebView. This contains the 2954 * back/forward list for use in querying each item in the history stack. 2955 * This is a copy of the private WebBackForwardList so it contains only a 2956 * snapshot of the current state. Multiple calls to this method may return 2957 * different objects. The object returned from this method will not be 2958 * updated to reflect any new state. 2959 */ 2960 public WebBackForwardList copyBackForwardList() { 2961 return mCallbackProxy.getBackForwardList().clone(); 2962 } 2963 2964 /* 2965 * Highlight and scroll to the next occurance of String in findAll. 2966 * Wraps the page infinitely, and scrolls. Must be called after 2967 * calling findAll. 2968 * 2969 * @param forward Direction to search. 2970 */ 2971 public void findNext(boolean forward) { 2972 if (0 == mNativeClass) return; // client isn't initialized 2973 nativeFindNext(forward); 2974 } 2975 2976 /* 2977 * Find all instances of find on the page and highlight them. 2978 * @param find String to find. 2979 * @return int The number of occurances of the String "find" 2980 * that were found. 2981 */ 2982 public int findAll(String find) { 2983 if (0 == mNativeClass) return 0; // client isn't initialized 2984 int result = find != null ? nativeFindAll(find.toLowerCase(), 2985 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 2986 invalidate(); 2987 mLastFind = find; 2988 return result; 2989 } 2990 2991 /** 2992 * Start an ActionMode for finding text in this WebView. 2993 * @param text If non-null, will be the initial text to search for. 2994 * Otherwise, the last String searched for in this WebView will 2995 * be used to start. 2996 * @param showIme If true, show the IME, assuming the user will begin typing. 2997 * If false and text is non-null, perform a find all. 2998 * @return boolean True if the find dialog is shown, false otherwise. 2999 */ 3000 public boolean showFindDialog(String text, boolean showIme) { 3001 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3002 if (startActionMode(callback) == null) { 3003 // Could not start the action mode, so end Find on page 3004 return false; 3005 } 3006 mFindCallback = callback; 3007 setFindIsUp(true); 3008 mFindCallback.setWebView(this); 3009 if (showIme) { 3010 mFindCallback.showSoftInput(); 3011 } else if (text != null) { 3012 mFindCallback.setText(text); 3013 mFindCallback.findAll(); 3014 return true; 3015 } 3016 if (text == null) { 3017 text = mLastFind; 3018 } 3019 if (text != null) { 3020 mFindCallback.setText(text); 3021 } 3022 return true; 3023 } 3024 3025 /** 3026 * Keep track of the find callback so that we can remove its titlebar if 3027 * necessary. 3028 */ 3029 private FindActionModeCallback mFindCallback; 3030 3031 /** 3032 * Toggle whether the find dialog is showing, for both native and Java. 3033 */ 3034 private void setFindIsUp(boolean isUp) { 3035 mFindIsUp = isUp; 3036 if (0 == mNativeClass) return; // client isn't initialized 3037 nativeSetFindIsUp(isUp); 3038 } 3039 3040 /** 3041 * Return the index of the currently highlighted match. 3042 */ 3043 int findIndex() { 3044 if (0 == mNativeClass) return -1; 3045 return nativeFindIndex(); 3046 } 3047 3048 // Used to know whether the find dialog is open. Affects whether 3049 // or not we draw the highlights for matches. 3050 private boolean mFindIsUp; 3051 3052 // Keep track of the last string sent, so we can search again when find is 3053 // reopened. 3054 private String mLastFind; 3055 3056 /** 3057 * Return the first substring consisting of the address of a physical 3058 * location. Currently, only addresses in the United States are detected, 3059 * and consist of: 3060 * - a house number 3061 * - a street name 3062 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3063 * - a city name 3064 * - a state or territory, either spelled out or two-letter abbr. 3065 * - an optional 5 digit or 9 digit zip code. 3066 * 3067 * All names must be correctly capitalized, and the zip code, if present, 3068 * must be valid for the state. The street type must be a standard USPS 3069 * spelling or abbreviation. The state or territory must also be spelled 3070 * or abbreviated using USPS standards. The house number may not exceed 3071 * five digits. 3072 * @param addr The string to search for addresses. 3073 * 3074 * @return the address, or if no address is found, return null. 3075 */ 3076 public static String findAddress(String addr) { 3077 return findAddress(addr, false); 3078 } 3079 3080 /** 3081 * @hide 3082 * Return the first substring consisting of the address of a physical 3083 * location. Currently, only addresses in the United States are detected, 3084 * and consist of: 3085 * - a house number 3086 * - a street name 3087 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3088 * - a city name 3089 * - a state or territory, either spelled out or two-letter abbr. 3090 * - an optional 5 digit or 9 digit zip code. 3091 * 3092 * Names are optionally capitalized, and the zip code, if present, 3093 * must be valid for the state. The street type must be a standard USPS 3094 * spelling or abbreviation. The state or territory must also be spelled 3095 * or abbreviated using USPS standards. The house number may not exceed 3096 * five digits. 3097 * @param addr The string to search for addresses. 3098 * @param caseInsensitive addr Set to true to make search ignore case. 3099 * 3100 * @return the address, or if no address is found, return null. 3101 */ 3102 public static String findAddress(String addr, boolean caseInsensitive) { 3103 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3104 } 3105 3106 /* 3107 * Clear the highlighting surrounding text matches created by findAll. 3108 */ 3109 public void clearMatches() { 3110 if (mNativeClass == 0) 3111 return; 3112 nativeSetFindIsEmpty(); 3113 invalidate(); 3114 } 3115 3116 /** 3117 * Called when the find ActionMode ends. 3118 */ 3119 void notifyFindDialogDismissed() { 3120 mFindCallback = null; 3121 if (mWebViewCore == null) { 3122 return; 3123 } 3124 clearMatches(); 3125 setFindIsUp(false); 3126 // Now that the dialog has been removed, ensure that we scroll to a 3127 // location that is not beyond the end of the page. 3128 pinScrollTo(mScrollX, mScrollY, false, 0); 3129 invalidate(); 3130 } 3131 3132 /** 3133 * Query the document to see if it contains any image references. The 3134 * message object will be dispatched with arg1 being set to 1 if images 3135 * were found and 0 if the document does not reference any images. 3136 * @param response The message that will be dispatched with the result. 3137 */ 3138 public void documentHasImages(Message response) { 3139 if (response == null) { 3140 return; 3141 } 3142 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3143 } 3144 3145 /** 3146 * Request the scroller to abort any ongoing animation 3147 * 3148 * @hide 3149 */ 3150 public void stopScroll() { 3151 mScroller.forceFinished(true); 3152 mLastVelocity = 0; 3153 } 3154 3155 @Override 3156 public void computeScroll() { 3157 if (mScroller.computeScrollOffset()) { 3158 int oldX = mScrollX; 3159 int oldY = mScrollY; 3160 int x = mScroller.getCurrX(); 3161 int y = mScroller.getCurrY(); 3162 invalidate(); // So we draw again 3163 3164 if (!mScroller.isFinished()) { 3165 int rangeX = computeMaxScrollX(); 3166 int rangeY = computeMaxScrollY(); 3167 int overflingDistance = mOverflingDistance; 3168 3169 // Use the layer's scroll data if needed. 3170 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3171 oldX = mScrollingLayerRect.left; 3172 oldY = mScrollingLayerRect.top; 3173 rangeX = mScrollingLayerRect.right; 3174 rangeY = mScrollingLayerRect.bottom; 3175 // No overscrolling for layers. 3176 overflingDistance = 0; 3177 } 3178 3179 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3180 rangeX, rangeY, 3181 overflingDistance, overflingDistance, false); 3182 3183 if (mOverScrollGlow != null) { 3184 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3185 } 3186 } else { 3187 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3188 mScrollX = x; 3189 mScrollY = y; 3190 } else { 3191 // Update the layer position instead of WebView. 3192 nativeScrollLayer(mScrollingLayer, x, y); 3193 mScrollingLayerRect.left = x; 3194 mScrollingLayerRect.top = y; 3195 } 3196 abortAnimation(); 3197 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3198 WebViewCore.resumePriority(); 3199 if (!mSelectingText) { 3200 WebViewCore.resumeUpdatePicture(mWebViewCore); 3201 } 3202 if (oldX != mScrollX || oldY != mScrollY) { 3203 sendOurVisibleRect(); 3204 } 3205 } 3206 } else { 3207 super.computeScroll(); 3208 } 3209 } 3210 3211 private static int computeDuration(int dx, int dy) { 3212 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3213 int duration = distance * 1000 / STD_SPEED; 3214 return Math.min(duration, MAX_DURATION); 3215 } 3216 3217 // helper to pin the scrollBy parameters (already in view coordinates) 3218 // returns true if the scroll was changed 3219 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3220 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3221 } 3222 // helper to pin the scrollTo parameters (already in view coordinates) 3223 // returns true if the scroll was changed 3224 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3225 x = pinLocX(x); 3226 y = pinLocY(y); 3227 int dx = x - mScrollX; 3228 int dy = y - mScrollY; 3229 3230 if ((dx | dy) == 0) { 3231 return false; 3232 } 3233 abortAnimation(); 3234 if (animate) { 3235 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3236 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3237 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3238 awakenScrollBars(mScroller.getDuration()); 3239 invalidate(); 3240 } else { 3241 scrollTo(x, y); 3242 } 3243 return true; 3244 } 3245 3246 // Scale from content to view coordinates, and pin. 3247 // Also called by jni webview.cpp 3248 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3249 if (mDrawHistory) { 3250 // disallow WebView to change the scroll position as History Picture 3251 // is used in the view system. 3252 // TODO: as we switchOutDrawHistory when trackball or navigation 3253 // keys are hit, this should be safe. Right? 3254 return false; 3255 } 3256 cx = contentToViewDimension(cx); 3257 cy = contentToViewDimension(cy); 3258 if (mHeightCanMeasure) { 3259 // move our visible rect according to scroll request 3260 if (cy != 0) { 3261 Rect tempRect = new Rect(); 3262 calcOurVisibleRect(tempRect); 3263 tempRect.offset(cx, cy); 3264 requestRectangleOnScreen(tempRect); 3265 } 3266 // FIXME: We scroll horizontally no matter what because currently 3267 // ScrollView and ListView will not scroll horizontally. 3268 // FIXME: Why do we only scroll horizontally if there is no 3269 // vertical scroll? 3270// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3271 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3272 } else { 3273 return pinScrollBy(cx, cy, animate, 0); 3274 } 3275 } 3276 3277 /** 3278 * Called by CallbackProxy when the page starts loading. 3279 * @param url The URL of the page which has started loading. 3280 */ 3281 /* package */ void onPageStarted(String url) { 3282 // every time we start a new page, we want to reset the 3283 // WebView certificate: if the new site is secure, we 3284 // will reload it and get a new certificate set; 3285 // if the new site is not secure, the certificate must be 3286 // null, and that will be the case 3287 setCertificate(null); 3288 3289 // reset the flag since we set to true in if need after 3290 // loading is see onPageFinished(Url) 3291 mAccessibilityScriptInjected = false; 3292 } 3293 3294 /** 3295 * Called by CallbackProxy when the page finishes loading. 3296 * @param url The URL of the page which has finished loading. 3297 */ 3298 /* package */ void onPageFinished(String url) { 3299 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3300 // If the user is now on a different page, or has scrolled the page 3301 // past the point where the title bar is offscreen, ignore the 3302 // scroll request. 3303 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3304 && mScrollX == 0 && mScrollY == 0) { 3305 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3306 SLIDE_TITLE_DURATION); 3307 } 3308 mPageThatNeedsToSlideTitleBarOffScreen = null; 3309 } 3310 mZoomManager.onPageFinished(url); 3311 injectAccessibilityForUrl(url); 3312 } 3313 3314 /** 3315 * This method injects accessibility in the loaded document if accessibility 3316 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3317 * If no URL specific script is found or JavaScript is disabled we fallback to 3318 * the default {@link AccessibilityInjector} implementation. 3319 * </p> 3320 * If the URL has the "axs" paramter set to 1 it has already done the 3321 * script injection so we do nothing. If the parameter is set to 0 3322 * the URL opts out accessibility script injection so we fall back to 3323 * the default {@link AccessibilityInjector}. 3324 * </p> 3325 * Note: If the user has not opted-in the accessibility script injection no scripts 3326 * are injected rather the default {@link AccessibilityInjector} implementation 3327 * is used. 3328 * 3329 * @param url The URL loaded by this {@link WebView}. 3330 */ 3331 private void injectAccessibilityForUrl(String url) { 3332 if (mWebViewCore == null) { 3333 return; 3334 } 3335 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3336 3337 if (!accessibilityManager.isEnabled()) { 3338 // it is possible that accessibility was turned off between reloads 3339 ensureAccessibilityScriptInjectorInstance(false); 3340 return; 3341 } 3342 3343 if (!getSettings().getJavaScriptEnabled()) { 3344 // no JS so we fallback to the basic buil-in support 3345 ensureAccessibilityScriptInjectorInstance(true); 3346 return; 3347 } 3348 3349 // check the URL "axs" parameter to choose appropriate action 3350 int axsParameterValue = getAxsUrlParameterValue(url); 3351 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3352 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3353 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3354 if (onDeviceScriptInjectionEnabled) { 3355 ensureAccessibilityScriptInjectorInstance(false); 3356 // neither script injected nor script injection opted out => we inject 3357 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3358 // TODO: Set this flag after successfull script injection. Maybe upon injection 3359 // the chooser should update the meta tag and we check it to declare success 3360 mAccessibilityScriptInjected = true; 3361 } else { 3362 // injection disabled so we fallback to the basic built-in support 3363 ensureAccessibilityScriptInjectorInstance(true); 3364 } 3365 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3366 // injection opted out so we fallback to the basic buil-in support 3367 ensureAccessibilityScriptInjectorInstance(true); 3368 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3369 ensureAccessibilityScriptInjectorInstance(false); 3370 // the URL provides accessibility but we still need to add our generic script 3371 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3372 } else { 3373 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3374 } 3375 } 3376 3377 /** 3378 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3379 * 3380 * @param present True to ensure an insance, false to ensure no instance. 3381 */ 3382 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3383 if (present) { 3384 if (mAccessibilityInjector == null) { 3385 mAccessibilityInjector = new AccessibilityInjector(this); 3386 } 3387 } else { 3388 mAccessibilityInjector = null; 3389 } 3390 } 3391 3392 /** 3393 * Gets the "axs" URL parameter value. 3394 * 3395 * @param url A url to fetch the paramter from. 3396 * @return The parameter value if such, -1 otherwise. 3397 */ 3398 private int getAxsUrlParameterValue(String url) { 3399 if (mMatchAxsUrlParameterPattern == null) { 3400 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3401 } 3402 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3403 if (matcher.find()) { 3404 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3405 return Integer.parseInt(keyValuePair.split("=")[1]); 3406 } 3407 return -1; 3408 } 3409 3410 /** 3411 * The URL of a page that sent a message to scroll the title bar off screen. 3412 * 3413 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3414 * title bar off the screen. Sometimes, the scroll position is set before 3415 * the page finishes loading. Rather than scrolling while the page is still 3416 * loading, keep track of the URL and new scroll position so we can perform 3417 * the scroll once the page finishes loading. 3418 */ 3419 private String mPageThatNeedsToSlideTitleBarOffScreen; 3420 3421 /** 3422 * The destination Y scroll position to be used when the page finishes 3423 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3424 */ 3425 private int mYDistanceToSlideTitleOffScreen; 3426 3427 // scale from content to view coordinates, and pin 3428 // return true if pin caused the final x/y different than the request cx/cy, 3429 // and a future scroll may reach the request cx/cy after our size has 3430 // changed 3431 // return false if the view scroll to the exact position as it is requested, 3432 // where negative numbers are taken to mean 0 3433 private boolean setContentScrollTo(int cx, int cy) { 3434 if (mDrawHistory) { 3435 // disallow WebView to change the scroll position as History Picture 3436 // is used in the view system. 3437 // One known case where this is called is that WebCore tries to 3438 // restore the scroll position. As history Picture already uses the 3439 // saved scroll position, it is ok to skip this. 3440 return false; 3441 } 3442 int vx; 3443 int vy; 3444 if ((cx | cy) == 0) { 3445 // If the page is being scrolled to (0,0), do not add in the title 3446 // bar's height, and simply scroll to (0,0). (The only other work 3447 // in contentToView_ is to multiply, so this would not change 0.) 3448 vx = 0; 3449 vy = 0; 3450 } else { 3451 vx = contentToViewX(cx); 3452 vy = contentToViewY(cy); 3453 } 3454// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3455// vx + " " + vy + "]"); 3456 // Some mobile sites attempt to scroll the title bar off the page by 3457 // scrolling to (0,1). If we are at the top left corner of the 3458 // page, assume this is an attempt to scroll off the title bar, and 3459 // animate the title bar off screen slowly enough that the user can see 3460 // it. 3461 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3462 && mTitleBar != null) { 3463 // FIXME: 100 should be defined somewhere as our max progress. 3464 if (getProgress() < 100) { 3465 // Wait to scroll the title bar off screen until the page has 3466 // finished loading. Keep track of the URL and the destination 3467 // Y position 3468 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3469 mYDistanceToSlideTitleOffScreen = vy; 3470 } else { 3471 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3472 } 3473 // Since we are animating, we have not yet reached the desired 3474 // scroll position. Do not return true to request another attempt 3475 return false; 3476 } 3477 pinScrollTo(vx, vy, false, 0); 3478 // If the request was to scroll to a negative coordinate, treat it as if 3479 // it was a request to scroll to 0 3480 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3481 return true; 3482 } else { 3483 return false; 3484 } 3485 } 3486 3487 // scale from content to view coordinates, and pin 3488 private void spawnContentScrollTo(int cx, int cy) { 3489 if (mDrawHistory) { 3490 // disallow WebView to change the scroll position as History Picture 3491 // is used in the view system. 3492 return; 3493 } 3494 int vx = contentToViewX(cx); 3495 int vy = contentToViewY(cy); 3496 pinScrollTo(vx, vy, true, 0); 3497 } 3498 3499 /** 3500 * These are from webkit, and are in content coordinate system (unzoomed) 3501 */ 3502 private void contentSizeChanged(boolean updateLayout) { 3503 // suppress 0,0 since we usually see real dimensions soon after 3504 // this avoids drawing the prev content in a funny place. If we find a 3505 // way to consolidate these notifications, this check may become 3506 // obsolete 3507 if ((mContentWidth | mContentHeight) == 0) { 3508 return; 3509 } 3510 3511 if (mHeightCanMeasure) { 3512 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3513 || updateLayout) { 3514 requestLayout(); 3515 } 3516 } else if (mWidthCanMeasure) { 3517 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3518 || updateLayout) { 3519 requestLayout(); 3520 } 3521 } else { 3522 // If we don't request a layout, try to send our view size to the 3523 // native side to ensure that WebCore has the correct dimensions. 3524 sendViewSizeZoom(false); 3525 } 3526 } 3527 3528 /** 3529 * Set the WebViewClient that will receive various notifications and 3530 * requests. This will replace the current handler. 3531 * @param client An implementation of WebViewClient. 3532 */ 3533 public void setWebViewClient(WebViewClient client) { 3534 mCallbackProxy.setWebViewClient(client); 3535 } 3536 3537 /** 3538 * Gets the WebViewClient 3539 * @return the current WebViewClient instance. 3540 * 3541 *@hide pending API council approval. 3542 */ 3543 public WebViewClient getWebViewClient() { 3544 return mCallbackProxy.getWebViewClient(); 3545 } 3546 3547 /** 3548 * Register the interface to be used when content can not be handled by 3549 * the rendering engine, and should be downloaded instead. This will replace 3550 * the current handler. 3551 * @param listener An implementation of DownloadListener. 3552 */ 3553 public void setDownloadListener(DownloadListener listener) { 3554 mCallbackProxy.setDownloadListener(listener); 3555 } 3556 3557 /** 3558 * Set the chrome handler. This is an implementation of WebChromeClient for 3559 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3560 * This will replace the current handler. 3561 * @param client An implementation of WebChromeClient. 3562 */ 3563 public void setWebChromeClient(WebChromeClient client) { 3564 mCallbackProxy.setWebChromeClient(client); 3565 } 3566 3567 /** 3568 * Gets the chrome handler. 3569 * @return the current WebChromeClient instance. 3570 * 3571 * @hide API council approval. 3572 */ 3573 public WebChromeClient getWebChromeClient() { 3574 return mCallbackProxy.getWebChromeClient(); 3575 } 3576 3577 /** 3578 * Set the back/forward list client. This is an implementation of 3579 * WebBackForwardListClient for handling new items and changes in the 3580 * history index. 3581 * @param client An implementation of WebBackForwardListClient. 3582 * {@hide} 3583 */ 3584 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3585 mCallbackProxy.setWebBackForwardListClient(client); 3586 } 3587 3588 /** 3589 * Gets the WebBackForwardListClient. 3590 * {@hide} 3591 */ 3592 public WebBackForwardListClient getWebBackForwardListClient() { 3593 return mCallbackProxy.getWebBackForwardListClient(); 3594 } 3595 3596 /** 3597 * Set the Picture listener. This is an interface used to receive 3598 * notifications of a new Picture. 3599 * @param listener An implementation of WebView.PictureListener. 3600 */ 3601 public void setPictureListener(PictureListener listener) { 3602 mPictureListener = listener; 3603 } 3604 3605 /** 3606 * {@hide} 3607 */ 3608 /* FIXME: Debug only! Remove for SDK! */ 3609 public void externalRepresentation(Message callback) { 3610 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3611 } 3612 3613 /** 3614 * {@hide} 3615 */ 3616 /* FIXME: Debug only! Remove for SDK! */ 3617 public void documentAsText(Message callback) { 3618 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3619 } 3620 3621 /** 3622 * Use this function to bind an object to JavaScript so that the 3623 * methods can be accessed from JavaScript. 3624 * <p><strong>IMPORTANT:</strong> 3625 * <ul> 3626 * <li> Using addJavascriptInterface() allows JavaScript to control your 3627 * application. This can be a very useful feature or a dangerous security 3628 * issue. When the HTML in the WebView is untrustworthy (for example, part 3629 * or all of the HTML is provided by some person or process), then an 3630 * attacker could inject HTML that will execute your code and possibly any 3631 * code of the attacker's choosing.<br> 3632 * Do not use addJavascriptInterface() unless all of the HTML in this 3633 * WebView was written by you.</li> 3634 * <li> The Java object that is bound runs in another thread and not in 3635 * the thread that it was constructed in.</li> 3636 * </ul></p> 3637 * @param obj The class instance to bind to JavaScript, null instances are 3638 * ignored. 3639 * @param interfaceName The name to used to expose the instance in 3640 * JavaScript. 3641 */ 3642 public void addJavascriptInterface(Object obj, String interfaceName) { 3643 if (obj == null) { 3644 return; 3645 } 3646 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3647 arg.mObject = obj; 3648 arg.mInterfaceName = interfaceName; 3649 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3650 } 3651 3652 /** 3653 * Removes a previously added JavaScript interface with the given name. 3654 * @param interfaceName The name of the interface to remove. 3655 */ 3656 public void removeJavascriptInterface(String interfaceName) { 3657 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3658 arg.mInterfaceName = interfaceName; 3659 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3660 } 3661 3662 /** 3663 * Return the WebSettings object used to control the settings for this 3664 * WebView. 3665 * @return A WebSettings object that can be used to control this WebView's 3666 * settings. 3667 */ 3668 public WebSettings getSettings() { 3669 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3670 } 3671 3672 /** 3673 * Return the list of currently loaded plugins. 3674 * @return The list of currently loaded plugins. 3675 * 3676 * @deprecated This was used for Gears, which has been deprecated. 3677 */ 3678 @Deprecated 3679 public static synchronized PluginList getPluginList() { 3680 return new PluginList(); 3681 } 3682 3683 /** 3684 * @deprecated This was used for Gears, which has been deprecated. 3685 */ 3686 @Deprecated 3687 public void refreshPlugins(boolean reloadOpenPages) { } 3688 3689 //------------------------------------------------------------------------- 3690 // Override View methods 3691 //------------------------------------------------------------------------- 3692 3693 @Override 3694 protected void finalize() throws Throwable { 3695 try { 3696 destroy(); 3697 } finally { 3698 super.finalize(); 3699 } 3700 } 3701 3702 @Override 3703 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3704 if (child == mTitleBar) { 3705 // When drawing the title bar, move it horizontally to always show 3706 // at the top of the WebView. 3707 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3708 int newTop = 0; 3709 if (mTitleGravity == Gravity.NO_GRAVITY) { 3710 newTop = Math.min(0, mScrollY); 3711 } else if (mTitleGravity == Gravity.TOP) { 3712 newTop = mScrollY; 3713 } 3714 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 3715 mTitleBar.setTop(newTop); 3716 } 3717 return super.drawChild(canvas, child, drawingTime); 3718 } 3719 3720 private void drawContent(Canvas canvas) { 3721 // Update the buttons in the picture, so when we draw the picture 3722 // to the screen, they are in the correct state. 3723 // Tell the native side if user is a) touching the screen, 3724 // b) pressing the trackball down, or c) pressing the enter key 3725 // If the cursor is on a button, we need to draw it in the pressed 3726 // state. 3727 // If mNativeClass is 0, we should not reach here, so we do not 3728 // need to check it again. 3729 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3730 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3731 || mTrackballDown || mGotCenterDown, false); 3732 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3733 } 3734 3735 /** 3736 * Draw the background when beyond bounds 3737 * @param canvas Canvas to draw into 3738 */ 3739 private void drawOverScrollBackground(Canvas canvas) { 3740 if (mOverScrollBackground == null) { 3741 mOverScrollBackground = new Paint(); 3742 Bitmap bm = BitmapFactory.decodeResource( 3743 mContext.getResources(), 3744 com.android.internal.R.drawable.status_bar_background); 3745 mOverScrollBackground.setShader(new BitmapShader(bm, 3746 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3747 mOverScrollBorder = new Paint(); 3748 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3749 mOverScrollBorder.setStrokeWidth(0); 3750 mOverScrollBorder.setColor(0xffbbbbbb); 3751 } 3752 3753 int top = 0; 3754 int right = computeRealHorizontalScrollRange(); 3755 int bottom = top + computeRealVerticalScrollRange(); 3756 // first draw the background and anchor to the top of the view 3757 canvas.save(); 3758 canvas.translate(mScrollX, mScrollY); 3759 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3760 - mScrollY, Region.Op.DIFFERENCE); 3761 canvas.drawPaint(mOverScrollBackground); 3762 canvas.restore(); 3763 // then draw the border 3764 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3765 // next clip the region for the content 3766 canvas.clipRect(0, top, right, bottom); 3767 } 3768 3769 @Override 3770 protected void onDraw(Canvas canvas) { 3771 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3772 if (mNativeClass == 0) { 3773 return; 3774 } 3775 3776 // if both mContentWidth and mContentHeight are 0, it means there is no 3777 // valid Picture passed to WebView yet. This can happen when WebView 3778 // just starts. Draw the background and return. 3779 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3780 canvas.drawColor(mBackgroundColor); 3781 return; 3782 } 3783 3784 if (canvas.isHardwareAccelerated()) { 3785 mZoomManager.setHardwareAccelerated(); 3786 } 3787 3788 int saveCount = canvas.save(); 3789 if (mInOverScrollMode && !getSettings() 3790 .getUseWebViewBackgroundForOverscrollBackground()) { 3791 drawOverScrollBackground(canvas); 3792 } 3793 if (mTitleBar != null) { 3794 canvas.translate(0, getTitleHeight()); 3795 } 3796 drawContent(canvas); 3797 canvas.restoreToCount(saveCount); 3798 3799 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3800 invalidate(); 3801 } 3802 if (inEditingMode()) { 3803 mWebTextView.onDrawSubstitute(); 3804 } 3805 mWebViewCore.signalRepaintDone(); 3806 3807 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3808 invalidate(); 3809 } 3810 3811 // paint the highlight in the end 3812 if (!mTouchHighlightRegion.isEmpty()) { 3813 if (mTouchHightlightPaint == null) { 3814 mTouchHightlightPaint = new Paint(); 3815 mTouchHightlightPaint.setColor(mHightlightColor); 3816 mTouchHightlightPaint.setAntiAlias(true); 3817 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3818 TOUCH_HIGHLIGHT_ARC)); 3819 } 3820 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3821 mTouchHightlightPaint); 3822 } 3823 if (DEBUG_TOUCH_HIGHLIGHT) { 3824 if (getSettings().getNavDump()) { 3825 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3826 if (mTouchCrossHairColor == null) { 3827 mTouchCrossHairColor = new Paint(); 3828 mTouchCrossHairColor.setColor(Color.RED); 3829 } 3830 canvas.drawLine(mTouchHighlightX - mNavSlop, 3831 mTouchHighlightY - mNavSlop, mTouchHighlightX 3832 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3833 + 1, mTouchCrossHairColor); 3834 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3835 mTouchHighlightY - mNavSlop, mTouchHighlightX 3836 - mNavSlop, 3837 mTouchHighlightY + mNavSlop + 1, 3838 mTouchCrossHairColor); 3839 } 3840 } 3841 } 3842 } 3843 3844 private void removeTouchHighlight(boolean removePendingMessage) { 3845 if (removePendingMessage) { 3846 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3847 } 3848 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3849 } 3850 3851 @Override 3852 public void setLayoutParams(ViewGroup.LayoutParams params) { 3853 if (params.height == LayoutParams.WRAP_CONTENT) { 3854 mWrapContent = true; 3855 } 3856 super.setLayoutParams(params); 3857 } 3858 3859 @Override 3860 public boolean performLongClick() { 3861 // performLongClick() is the result of a delayed message. If we switch 3862 // to windows overview, the WebView will be temporarily removed from the 3863 // view system. In that case, do nothing. 3864 if (getParent() == null) return false; 3865 3866 // A multi-finger gesture can look like a long press; make sure we don't take 3867 // long press actions if we're scaling. 3868 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3869 if (detector != null && detector.isInProgress()) { 3870 return false; 3871 } 3872 3873 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3874 // Send the click so that the textfield is in focus 3875 centerKeyPressOnTextField(); 3876 rebuildWebTextView(); 3877 } else { 3878 clearTextEntry(); 3879 } 3880 if (inEditingMode()) { 3881 // Since we just called rebuildWebTextView, the layout is not set 3882 // properly. Update it so it can correctly find the word to select. 3883 mWebTextView.ensureLayout(); 3884 // Provide a touch down event to WebTextView, which will allow it 3885 // to store the location to use in performLongClick. 3886 AbsoluteLayout.LayoutParams params 3887 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 3888 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 3889 mLastTouchTime, MotionEvent.ACTION_DOWN, 3890 mLastTouchX - params.x + mScrollX, 3891 mLastTouchY - params.y + mScrollY, 0); 3892 mWebTextView.dispatchTouchEvent(fake); 3893 return mWebTextView.performLongClick(); 3894 } 3895 if (mSelectingText) return false; // long click does nothing on selection 3896 /* if long click brings up a context menu, the super function 3897 * returns true and we're done. Otherwise, nothing happened when 3898 * the user clicked. */ 3899 if (super.performLongClick()) { 3900 return true; 3901 } 3902 /* In the case where the application hasn't already handled the long 3903 * click action, look for a word under the click. If one is found, 3904 * animate the text selection into view. 3905 * FIXME: no animation code yet */ 3906 return selectText(); 3907 } 3908 3909 /** 3910 * Select the word at the last click point. 3911 * 3912 * @hide pending API council approval 3913 */ 3914 public boolean selectText() { 3915 int x = viewToContentX(mLastTouchX + mScrollX); 3916 int y = viewToContentY(mLastTouchY + mScrollY); 3917 return selectText(x, y); 3918 } 3919 3920 /** 3921 * Select the word at the indicated content coordinates. 3922 */ 3923 boolean selectText(int x, int y) { 3924 if (!setUpSelect(true, x, y)) { 3925 return false; 3926 } 3927 nativeSetExtendSelection(); 3928 mDrawSelectionPointer = false; 3929 mSelectionStarted = true; 3930 mTouchMode = TOUCH_DRAG_MODE; 3931 return true; 3932 } 3933 3934 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3935 3936 @Override 3937 protected void onConfigurationChanged(Configuration newConfig) { 3938 if (mSelectingText && mOrientation != newConfig.orientation) { 3939 selectionDone(); 3940 } 3941 mOrientation = newConfig.orientation; 3942 } 3943 3944 /** 3945 * Keep track of the Callback so we can end its ActionMode or remove its 3946 * titlebar. 3947 */ 3948 private SelectActionModeCallback mSelectCallback; 3949 3950 // These values are possible options for didUpdateWebTextViewDimensions. 3951 private static final int FULLY_ON_SCREEN = 0; 3952 private static final int INTERSECTS_SCREEN = 1; 3953 private static final int ANYWHERE = 2; 3954 3955 /** 3956 * Check to see if the focused textfield/textarea is still on screen. If it 3957 * is, update the the dimensions and location of WebTextView. Otherwise, 3958 * remove the WebTextView. Should be called when the zoom level changes. 3959 * @param intersection How to determine whether the textfield/textarea is 3960 * still on screen. 3961 * @return boolean True if the textfield/textarea is still on screen and the 3962 * dimensions/location of WebTextView have been updated. 3963 */ 3964 private boolean didUpdateWebTextViewDimensions(int intersection) { 3965 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3966 Rect vBox = contentToViewRect(contentBounds); 3967 Rect visibleRect = new Rect(); 3968 calcOurVisibleRect(visibleRect); 3969 // If the textfield is on screen, place the WebTextView in 3970 // its new place, accounting for our new scroll/zoom values, 3971 // and adjust its textsize. 3972 boolean onScreen; 3973 switch (intersection) { 3974 case FULLY_ON_SCREEN: 3975 onScreen = visibleRect.contains(vBox); 3976 break; 3977 case INTERSECTS_SCREEN: 3978 onScreen = Rect.intersects(visibleRect, vBox); 3979 break; 3980 case ANYWHERE: 3981 onScreen = true; 3982 break; 3983 default: 3984 throw new AssertionError( 3985 "invalid parameter passed to didUpdateWebTextViewDimensions"); 3986 } 3987 if (onScreen) { 3988 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3989 vBox.height()); 3990 mWebTextView.updateTextSize(); 3991 updateWebTextViewPadding(); 3992 return true; 3993 } else { 3994 // The textfield is now off screen. The user probably 3995 // was not zooming to see the textfield better. Remove 3996 // the WebTextView. If the user types a key, and the 3997 // textfield is still in focus, we will reconstruct 3998 // the WebTextView and scroll it back on screen. 3999 mWebTextView.remove(); 4000 return false; 4001 } 4002 } 4003 4004 void setBaseLayer(int layer, Rect invalRect, boolean showVisualIndciator) { 4005 if (mNativeClass == 0) 4006 return; 4007 if (invalRect == null) { 4008 Rect rect = new Rect(0, 0, mContentWidth, mContentHeight); 4009 nativeSetBaseLayer(layer, rect, showVisualIndciator); 4010 } else { 4011 nativeSetBaseLayer(layer, invalRect, showVisualIndciator); 4012 } 4013 } 4014 4015 private void onZoomAnimationStart() { 4016 // If it is in password mode, turn it off so it does not draw misplaced. 4017 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4018 mWebTextView.setInPassword(false); 4019 } 4020 } 4021 4022 private void onZoomAnimationEnd() { 4023 // adjust the edit text view if needed 4024 if (inEditingMode() && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN) 4025 && nativeFocusCandidateIsPassword()) { 4026 // If it is a password field, start drawing the WebTextView once 4027 // again. 4028 mWebTextView.setInPassword(true); 4029 } 4030 } 4031 4032 void onFixedLengthZoomAnimationStart() { 4033 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4034 onZoomAnimationStart(); 4035 } 4036 4037 void onFixedLengthZoomAnimationEnd() { 4038 if (!mSelectingText) { 4039 WebViewCore.resumeUpdatePicture(mWebViewCore); 4040 } 4041 onZoomAnimationEnd(); 4042 } 4043 4044 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4045 Paint.DITHER_FLAG | 4046 Paint.SUBPIXEL_TEXT_FLAG; 4047 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4048 Paint.DITHER_FLAG; 4049 4050 private final DrawFilter mZoomFilter = 4051 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4052 // If we need to trade better quality for speed, set mScrollFilter to null 4053 private final DrawFilter mScrollFilter = 4054 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4055 4056 private void drawCoreAndCursorRing(Canvas canvas, int color, 4057 boolean drawCursorRing) { 4058 if (mDrawHistory) { 4059 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4060 canvas.drawPicture(mHistoryPicture); 4061 return; 4062 } 4063 if (mNativeClass == 0) return; 4064 4065 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4066 boolean animateScroll = ((!mScroller.isFinished() 4067 || mVelocityTracker != null) 4068 && (mTouchMode != TOUCH_DRAG_MODE || 4069 mHeldMotionless != MOTIONLESS_TRUE)) 4070 || mDeferTouchMode == TOUCH_DRAG_MODE; 4071 if (mTouchMode == TOUCH_DRAG_MODE) { 4072 if (mHeldMotionless == MOTIONLESS_PENDING) { 4073 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4074 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4075 mHeldMotionless = MOTIONLESS_FALSE; 4076 } 4077 if (mHeldMotionless == MOTIONLESS_FALSE) { 4078 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4079 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4080 mHeldMotionless = MOTIONLESS_PENDING; 4081 } 4082 } 4083 if (animateZoom) { 4084 mZoomManager.animateZoom(canvas); 4085 } else { 4086 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4087 } 4088 4089 boolean UIAnimationsRunning = false; 4090 // Currently for each draw we compute the animation values; 4091 // We may in the future decide to do that independently. 4092 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4093 UIAnimationsRunning = true; 4094 // If we have unfinished (or unstarted) animations, 4095 // we ask for a repaint. 4096 invalidate(); 4097 } 4098 4099 // decide which adornments to draw 4100 int extras = DRAW_EXTRAS_NONE; 4101 if (mFindIsUp) { 4102 extras = DRAW_EXTRAS_FIND; 4103 } else if (mSelectingText) { 4104 extras = DRAW_EXTRAS_SELECTION; 4105 nativeSetSelectionPointer(mDrawSelectionPointer, 4106 mZoomManager.getInvScale(), 4107 mSelectX, mSelectY - getTitleHeight()); 4108 } else if (drawCursorRing) { 4109 extras = DRAW_EXTRAS_CURSOR_RING; 4110 } 4111 if (DebugFlags.WEB_VIEW) { 4112 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4113 + " mSelectingText=" + mSelectingText 4114 + " nativePageShouldHandleShiftAndArrows()=" 4115 + nativePageShouldHandleShiftAndArrows() 4116 + " animateZoom=" + animateZoom 4117 + " extras=" + extras); 4118 } 4119 4120 if (canvas.isHardwareAccelerated()) { 4121 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4122 getScale(), extras); 4123 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4124 } else { 4125 DrawFilter df = null; 4126 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4127 df = mZoomFilter; 4128 } else if (animateScroll) { 4129 df = mScrollFilter; 4130 } 4131 canvas.setDrawFilter(df); 4132 // XXX: Revisit splitting content. Right now it causes a 4133 // synchronization problem with layers. 4134 int content = nativeDraw(canvas, color, extras, false); 4135 canvas.setDrawFilter(null); 4136 if (content != 0) { 4137 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4138 } 4139 } 4140 4141 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4142 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4143 mTouchMode = TOUCH_SHORTPRESS_MODE; 4144 } 4145 } 4146 if (mFocusSizeChanged) { 4147 mFocusSizeChanged = false; 4148 // If we are zooming, this will get handled above, when the zoom 4149 // finishes. We also do not need to do this unless the WebTextView 4150 // is showing. 4151 if (!animateZoom && inEditingMode()) { 4152 didUpdateWebTextViewDimensions(ANYWHERE); 4153 } 4154 } 4155 } 4156 4157 // draw history 4158 private boolean mDrawHistory = false; 4159 private Picture mHistoryPicture = null; 4160 private int mHistoryWidth = 0; 4161 private int mHistoryHeight = 0; 4162 4163 // Only check the flag, can be called from WebCore thread 4164 boolean drawHistory() { 4165 return mDrawHistory; 4166 } 4167 4168 int getHistoryPictureWidth() { 4169 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4170 } 4171 4172 // Should only be called in UI thread 4173 void switchOutDrawHistory() { 4174 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4175 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4176 mDrawHistory = false; 4177 mHistoryPicture = null; 4178 invalidate(); 4179 int oldScrollX = mScrollX; 4180 int oldScrollY = mScrollY; 4181 mScrollX = pinLocX(mScrollX); 4182 mScrollY = pinLocY(mScrollY); 4183 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4184 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4185 } else { 4186 sendOurVisibleRect(); 4187 } 4188 } 4189 } 4190 4191 WebViewCore.CursorData cursorData() { 4192 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4193 result.mMoveGeneration = nativeMoveGeneration(); 4194 result.mFrame = nativeCursorFramePointer(); 4195 Point position = nativeCursorPosition(); 4196 result.mX = position.x; 4197 result.mY = position.y; 4198 return result; 4199 } 4200 4201 /** 4202 * Delete text from start to end in the focused textfield. If there is no 4203 * focus, or if start == end, silently fail. If start and end are out of 4204 * order, swap them. 4205 * @param start Beginning of selection to delete. 4206 * @param end End of selection to delete. 4207 */ 4208 /* package */ void deleteSelection(int start, int end) { 4209 mTextGeneration++; 4210 WebViewCore.TextSelectionData data 4211 = new WebViewCore.TextSelectionData(start, end); 4212 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4213 data); 4214 } 4215 4216 /** 4217 * Set the selection to (start, end) in the focused textfield. If start and 4218 * end are out of order, swap them. 4219 * @param start Beginning of selection. 4220 * @param end End of selection. 4221 */ 4222 /* package */ void setSelection(int start, int end) { 4223 if (mWebViewCore != null) { 4224 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4225 } 4226 } 4227 4228 @Override 4229 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4230 InputConnection connection = super.onCreateInputConnection(outAttrs); 4231 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4232 return connection; 4233 } 4234 4235 /** 4236 * Called in response to a message from webkit telling us that the soft 4237 * keyboard should be launched. 4238 */ 4239 private void displaySoftKeyboard(boolean isTextView) { 4240 InputMethodManager imm = (InputMethodManager) 4241 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4242 4243 // bring it back to the default level scale so that user can enter text 4244 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4245 if (zoom) { 4246 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4247 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4248 } 4249 if (isTextView) { 4250 rebuildWebTextView(); 4251 if (inEditingMode()) { 4252 imm.showSoftInput(mWebTextView, 0); 4253 if (zoom) { 4254 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4255 } 4256 return; 4257 } 4258 } 4259 // Used by plugins and contentEditable. 4260 // Also used if the navigation cache is out of date, and 4261 // does not recognize that a textfield is in focus. In that 4262 // case, use WebView as the targeted view. 4263 // see http://b/issue?id=2457459 4264 imm.showSoftInput(this, 0); 4265 } 4266 4267 // Called by WebKit to instruct the UI to hide the keyboard 4268 private void hideSoftKeyboard() { 4269 InputMethodManager imm = InputMethodManager.peekInstance(); 4270 if (imm != null && (imm.isActive(this) 4271 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4272 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4273 } 4274 } 4275 4276 /* 4277 * This method checks the current focus and cursor and potentially rebuilds 4278 * mWebTextView to have the appropriate properties, such as password, 4279 * multiline, and what text it contains. It also removes it if necessary. 4280 */ 4281 /* package */ void rebuildWebTextView() { 4282 // If the WebView does not have focus, do nothing until it gains focus. 4283 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4284 return; 4285 } 4286 boolean alreadyThere = inEditingMode(); 4287 // inEditingMode can only return true if mWebTextView is non-null, 4288 // so we can safely call remove() if (alreadyThere) 4289 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4290 if (alreadyThere) { 4291 mWebTextView.remove(); 4292 } 4293 return; 4294 } 4295 // At this point, we know we have found an input field, so go ahead 4296 // and create the WebTextView if necessary. 4297 if (mWebTextView == null) { 4298 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4299 // Initialize our generation number. 4300 mTextGeneration = 0; 4301 } 4302 mWebTextView.updateTextSize(); 4303 Rect visibleRect = new Rect(); 4304 calcOurContentVisibleRect(visibleRect); 4305 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4306 // should be in content coordinates. 4307 Rect bounds = nativeFocusCandidateNodeBounds(); 4308 Rect vBox = contentToViewRect(bounds); 4309 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4310 if (!Rect.intersects(bounds, visibleRect)) { 4311 revealSelection(); 4312 } 4313 String text = nativeFocusCandidateText(); 4314 int nodePointer = nativeFocusCandidatePointer(); 4315 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4316 // It is possible that we have the same textfield, but it has moved, 4317 // i.e. In the case of opening/closing the screen. 4318 // In that case, we need to set the dimensions, but not the other 4319 // aspects. 4320 // If the text has been changed by webkit, update it. However, if 4321 // there has been more UI text input, ignore it. We will receive 4322 // another update when that text is recognized. 4323 if (text != null && !text.equals(mWebTextView.getText().toString()) 4324 && nativeTextGeneration() == mTextGeneration) { 4325 mWebTextView.setTextAndKeepSelection(text); 4326 } 4327 } else { 4328 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4329 Gravity.RIGHT : Gravity.NO_GRAVITY); 4330 // This needs to be called before setType, which may call 4331 // requestFormData, and it needs to have the correct nodePointer. 4332 mWebTextView.setNodePointer(nodePointer); 4333 mWebTextView.setType(nativeFocusCandidateType()); 4334 updateWebTextViewPadding(); 4335 if (null == text) { 4336 if (DebugFlags.WEB_VIEW) { 4337 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4338 } 4339 text = ""; 4340 } 4341 mWebTextView.setTextAndKeepSelection(text); 4342 InputMethodManager imm = InputMethodManager.peekInstance(); 4343 if (imm != null && imm.isActive(mWebTextView)) { 4344 imm.restartInput(mWebTextView); 4345 } 4346 } 4347 if (isFocused()) { 4348 mWebTextView.requestFocus(); 4349 } 4350 } 4351 4352 /** 4353 * Update the padding of mWebTextView based on the native textfield/textarea 4354 */ 4355 void updateWebTextViewPadding() { 4356 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4357 if (paddingRect != null) { 4358 // Use contentToViewDimension since these are the dimensions of 4359 // the padding. 4360 mWebTextView.setPadding( 4361 contentToViewDimension(paddingRect.left), 4362 contentToViewDimension(paddingRect.top), 4363 contentToViewDimension(paddingRect.right), 4364 contentToViewDimension(paddingRect.bottom)); 4365 } 4366 } 4367 4368 /** 4369 * Tell webkit to put the cursor on screen. 4370 */ 4371 /* package */ void revealSelection() { 4372 if (mWebViewCore != null) { 4373 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4374 } 4375 } 4376 4377 /** 4378 * Called by WebTextView to find saved form data associated with the 4379 * textfield 4380 * @param name Name of the textfield. 4381 * @param nodePointer Pointer to the node of the textfield, so it can be 4382 * compared to the currently focused textfield when the data is 4383 * retrieved. 4384 * @param autoFillable true if WebKit has determined this field is part of 4385 * a form that can be auto filled. 4386 * @param autoComplete true if the attribute "autocomplete" is set to true 4387 * on the textfield. 4388 */ 4389 /* package */ void requestFormData(String name, int nodePointer, 4390 boolean autoFillable, boolean autoComplete) { 4391 if (mWebViewCore.getSettings().getSaveFormData()) { 4392 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4393 update.arg1 = nodePointer; 4394 RequestFormData updater = new RequestFormData(name, getUrl(), 4395 update, autoFillable, autoComplete); 4396 Thread t = new Thread(updater); 4397 t.start(); 4398 } 4399 } 4400 4401 /** 4402 * Pass a message to find out the <label> associated with the <input> 4403 * identified by nodePointer 4404 * @param framePointer Pointer to the frame containing the <input> node 4405 * @param nodePointer Pointer to the node for which a <label> is desired. 4406 */ 4407 /* package */ void requestLabel(int framePointer, int nodePointer) { 4408 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4409 nodePointer); 4410 } 4411 4412 /* 4413 * This class requests an Adapter for the WebTextView which shows past 4414 * entries stored in the database. It is a Runnable so that it can be done 4415 * in its own thread, without slowing down the UI. 4416 */ 4417 private class RequestFormData implements Runnable { 4418 private String mName; 4419 private String mUrl; 4420 private Message mUpdateMessage; 4421 private boolean mAutoFillable; 4422 private boolean mAutoComplete; 4423 4424 public RequestFormData(String name, String url, Message msg, 4425 boolean autoFillable, boolean autoComplete) { 4426 mName = name; 4427 mUrl = url; 4428 mUpdateMessage = msg; 4429 mAutoFillable = autoFillable; 4430 mAutoComplete = autoComplete; 4431 } 4432 4433 public void run() { 4434 ArrayList<String> pastEntries = new ArrayList<String>(); 4435 4436 if (mAutoFillable) { 4437 // Note that code inside the adapter click handler in WebTextView depends 4438 // on the AutoFill item being at the top of the drop down list. If you change 4439 // the order, make sure to do it there too! 4440 WebSettings settings = getSettings(); 4441 if (settings != null && settings.getAutoFillProfile() != null) { 4442 pastEntries.add(getResources().getText( 4443 com.android.internal.R.string.autofill_this_form).toString() + 4444 " " + 4445 mAutoFillData.getPreviewString()); 4446 mWebTextView.setAutoFillProfileIsSet(true); 4447 } else { 4448 // There is no autofill profile set up yet, so add an option that 4449 // will invite the user to set their profile up. 4450 pastEntries.add(getResources().getText( 4451 com.android.internal.R.string.setup_autofill).toString()); 4452 mWebTextView.setAutoFillProfileIsSet(false); 4453 } 4454 } 4455 4456 if (mAutoComplete) { 4457 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4458 } 4459 4460 if (pastEntries.size() > 0) { 4461 AutoCompleteAdapter adapter = new 4462 AutoCompleteAdapter(mContext, pastEntries); 4463 mUpdateMessage.obj = adapter; 4464 mUpdateMessage.sendToTarget(); 4465 } 4466 } 4467 } 4468 4469 /** 4470 * Dump the display tree to "/sdcard/displayTree.txt" 4471 * 4472 * @hide debug only 4473 */ 4474 public void dumpDisplayTree() { 4475 nativeDumpDisplayTree(getUrl()); 4476 } 4477 4478 /** 4479 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4480 * "/sdcard/domTree.txt" 4481 * 4482 * @hide debug only 4483 */ 4484 public void dumpDomTree(boolean toFile) { 4485 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4486 } 4487 4488 /** 4489 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4490 * to "/sdcard/renderTree.txt" 4491 * 4492 * @hide debug only 4493 */ 4494 public void dumpRenderTree(boolean toFile) { 4495 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4496 } 4497 4498 /** 4499 * Called by DRT on UI thread, need to proxy to WebCore thread. 4500 * 4501 * @hide debug only 4502 */ 4503 public void useMockDeviceOrientation() { 4504 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4505 } 4506 4507 /** 4508 * Called by DRT on WebCore thread. 4509 * 4510 * @hide debug only 4511 */ 4512 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4513 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4514 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4515 canProvideGamma, gamma); 4516 } 4517 4518 /** 4519 * Dump the V8 counters to standard output. 4520 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4521 * true. Otherwise, this will do nothing. 4522 * 4523 * @hide debug only 4524 */ 4525 public void dumpV8Counters() { 4526 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4527 } 4528 4529 // This is used to determine long press with the center key. Does not 4530 // affect long press with the trackball/touch. 4531 private boolean mGotCenterDown = false; 4532 4533 @Override 4534 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4535 // send complex characters to webkit for use by JS and plugins 4536 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4537 // pass the key to DOM 4538 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4539 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4540 // return true as DOM handles the key 4541 return true; 4542 } 4543 return false; 4544 } 4545 4546 private boolean isEnterActionKey(int keyCode) { 4547 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4548 || keyCode == KeyEvent.KEYCODE_ENTER 4549 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4550 } 4551 4552 @Override 4553 public boolean onKeyDown(int keyCode, KeyEvent event) { 4554 if (DebugFlags.WEB_VIEW) { 4555 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4556 + "keyCode=" + keyCode 4557 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4558 } 4559 4560 // don't implement accelerator keys here; defer to host application 4561 if (event.isCtrlPressed()) { 4562 return false; 4563 } 4564 4565 if (mNativeClass == 0) { 4566 return false; 4567 } 4568 4569 // do this hack up front, so it always works, regardless of touch-mode 4570 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4571 mAutoRedraw = !mAutoRedraw; 4572 if (mAutoRedraw) { 4573 invalidate(); 4574 } 4575 return true; 4576 } 4577 4578 // Bubble up the key event if 4579 // 1. it is a system key; or 4580 // 2. the host application wants to handle it; 4581 if (event.isSystem() 4582 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4583 return false; 4584 } 4585 4586 // accessibility support 4587 if (accessibilityScriptInjected()) { 4588 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4589 // if an accessibility script is injected we delegate to it the key handling. 4590 // this script is a screen reader which is a fully fledged solution for blind 4591 // users to navigate in and interact with web pages. 4592 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4593 return true; 4594 } else { 4595 // Clean up if accessibility was disabled after loading the current URL. 4596 mAccessibilityScriptInjected = false; 4597 } 4598 } else if (mAccessibilityInjector != null) { 4599 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4600 if (mAccessibilityInjector.onKeyEvent(event)) { 4601 // if an accessibility injector is present (no JavaScript enabled or the site 4602 // opts out injecting our JavaScript screen reader) we let it decide whether 4603 // to act on and consume the event. 4604 return true; 4605 } 4606 } else { 4607 // Clean up if accessibility was disabled after loading the current URL. 4608 mAccessibilityInjector = null; 4609 } 4610 } 4611 4612 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4613 if (event.hasNoModifiers()) { 4614 pageUp(false); 4615 return true; 4616 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4617 pageUp(true); 4618 return true; 4619 } 4620 } 4621 4622 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4623 if (event.hasNoModifiers()) { 4624 pageDown(false); 4625 return true; 4626 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4627 pageDown(true); 4628 return true; 4629 } 4630 } 4631 4632 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4633 pageUp(true); 4634 return true; 4635 } 4636 4637 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4638 pageDown(true); 4639 return true; 4640 } 4641 4642 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4643 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4644 switchOutDrawHistory(); 4645 if (nativePageShouldHandleShiftAndArrows()) { 4646 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4647 return true; 4648 } 4649 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4650 switch (keyCode) { 4651 case KeyEvent.KEYCODE_DPAD_UP: 4652 pageUp(true); 4653 return true; 4654 case KeyEvent.KEYCODE_DPAD_DOWN: 4655 pageDown(true); 4656 return true; 4657 case KeyEvent.KEYCODE_DPAD_LEFT: 4658 nativeClearCursor(); // start next trackball movement from page edge 4659 return pinScrollTo(0, mScrollY, true, 0); 4660 case KeyEvent.KEYCODE_DPAD_RIGHT: 4661 nativeClearCursor(); // start next trackball movement from page edge 4662 return pinScrollTo(mContentWidth, mScrollY, true, 0); 4663 } 4664 } 4665 if (mSelectingText) { 4666 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4667 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4668 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4669 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4670 int multiplier = event.getRepeatCount() + 1; 4671 moveSelection(xRate * multiplier, yRate * multiplier); 4672 return true; 4673 } 4674 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4675 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4676 return true; 4677 } 4678 // Bubble up the key event as WebView doesn't handle it 4679 return false; 4680 } 4681 4682 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4683 switchOutDrawHistory(); 4684 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 4685 || nativeCursorWantsKeyEvents(); 4686 if (event.getRepeatCount() == 0) { 4687 if (mSelectingText) { 4688 return true; // discard press if copy in progress 4689 } 4690 mGotCenterDown = true; 4691 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4692 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4693 // Already checked mNativeClass, so we do not need to check it 4694 // again. 4695 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4696 if (!wantsKeyEvents) return true; 4697 } 4698 // Bubble up the key event as WebView doesn't handle it 4699 if (!wantsKeyEvents) return false; 4700 } 4701 4702 if (getSettings().getNavDump()) { 4703 switch (keyCode) { 4704 case KeyEvent.KEYCODE_4: 4705 dumpDisplayTree(); 4706 break; 4707 case KeyEvent.KEYCODE_5: 4708 case KeyEvent.KEYCODE_6: 4709 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4710 break; 4711 case KeyEvent.KEYCODE_7: 4712 case KeyEvent.KEYCODE_8: 4713 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4714 break; 4715 case KeyEvent.KEYCODE_9: 4716 nativeInstrumentReport(); 4717 return true; 4718 } 4719 } 4720 4721 if (nativeCursorIsTextInput()) { 4722 // This message will put the node in focus, for the DOM's notion 4723 // of focus. 4724 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 4725 nativeCursorNodePointer()); 4726 // This will bring up the WebTextView and put it in focus, for 4727 // our view system's notion of focus 4728 rebuildWebTextView(); 4729 // Now we need to pass the event to it 4730 if (inEditingMode()) { 4731 mWebTextView.setDefaultSelection(); 4732 return mWebTextView.dispatchKeyEvent(event); 4733 } 4734 } else if (nativeHasFocusNode()) { 4735 // In this case, the cursor is not on a text input, but the focus 4736 // might be. Check it, and if so, hand over to the WebTextView. 4737 rebuildWebTextView(); 4738 if (inEditingMode()) { 4739 mWebTextView.setDefaultSelection(); 4740 return mWebTextView.dispatchKeyEvent(event); 4741 } 4742 } 4743 4744 // TODO: should we pass all the keys to DOM or check the meta tag 4745 if (nativeCursorWantsKeyEvents() || true) { 4746 // pass the key to DOM 4747 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4748 // return true as DOM handles the key 4749 return true; 4750 } 4751 4752 // Bubble up the key event as WebView doesn't handle it 4753 return false; 4754 } 4755 4756 @Override 4757 public boolean onKeyUp(int keyCode, KeyEvent event) { 4758 if (DebugFlags.WEB_VIEW) { 4759 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4760 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4761 } 4762 4763 if (mNativeClass == 0) { 4764 return false; 4765 } 4766 4767 // special CALL handling when cursor node's href is "tel:XXX" 4768 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4769 String text = nativeCursorText(); 4770 if (!nativeCursorIsTextInput() && text != null 4771 && text.startsWith(SCHEME_TEL)) { 4772 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4773 getContext().startActivity(intent); 4774 return true; 4775 } 4776 } 4777 4778 // Bubble up the key event if 4779 // 1. it is a system key; or 4780 // 2. the host application wants to handle it; 4781 if (event.isSystem() 4782 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4783 return false; 4784 } 4785 4786 // accessibility support 4787 if (accessibilityScriptInjected()) { 4788 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4789 // if an accessibility script is injected we delegate to it the key handling. 4790 // this script is a screen reader which is a fully fledged solution for blind 4791 // users to navigate in and interact with web pages. 4792 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4793 return true; 4794 } else { 4795 // Clean up if accessibility was disabled after loading the current URL. 4796 mAccessibilityScriptInjected = false; 4797 } 4798 } else if (mAccessibilityInjector != null) { 4799 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4800 if (mAccessibilityInjector.onKeyEvent(event)) { 4801 // if an accessibility injector is present (no JavaScript enabled or the site 4802 // opts out injecting our JavaScript screen reader) we let it decide whether to 4803 // act on and consume the event. 4804 return true; 4805 } 4806 } else { 4807 // Clean up if accessibility was disabled after loading the current URL. 4808 mAccessibilityInjector = null; 4809 } 4810 } 4811 4812 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4813 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4814 if (nativePageShouldHandleShiftAndArrows()) { 4815 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4816 return true; 4817 } 4818 // always handle the navigation keys in the UI thread 4819 // Bubble up the key event as WebView doesn't handle it 4820 return false; 4821 } 4822 4823 if (isEnterActionKey(keyCode)) { 4824 // remove the long press message first 4825 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4826 mGotCenterDown = false; 4827 4828 if (mSelectingText) { 4829 if (mExtendSelection) { 4830 copySelection(); 4831 selectionDone(); 4832 } else { 4833 mExtendSelection = true; 4834 nativeSetExtendSelection(); 4835 invalidate(); // draw the i-beam instead of the arrow 4836 } 4837 return true; // discard press if copy in progress 4838 } 4839 4840 // perform the single click 4841 Rect visibleRect = sendOurVisibleRect(); 4842 // Note that sendOurVisibleRect calls viewToContent, so the 4843 // coordinates should be in content coordinates. 4844 if (!nativeCursorIntersects(visibleRect)) { 4845 return false; 4846 } 4847 WebViewCore.CursorData data = cursorData(); 4848 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4849 playSoundEffect(SoundEffectConstants.CLICK); 4850 if (nativeCursorIsTextInput()) { 4851 rebuildWebTextView(); 4852 centerKeyPressOnTextField(); 4853 if (inEditingMode()) { 4854 mWebTextView.setDefaultSelection(); 4855 } 4856 return true; 4857 } 4858 clearTextEntry(); 4859 nativeShowCursorTimed(); 4860 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4861 return true; 4862 } 4863 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 4864 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4865 nativeCursorNodePointer()); 4866 return true; 4867 } 4868 } 4869 4870 // TODO: should we pass all the keys to DOM or check the meta tag 4871 if (nativeCursorWantsKeyEvents() || true) { 4872 // pass the key to DOM 4873 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4874 // return true as DOM handles the key 4875 return true; 4876 } 4877 4878 // Bubble up the key event as WebView doesn't handle it 4879 return false; 4880 } 4881 4882 /* 4883 * Enter selecting text mode, and see if CAB should be shown. 4884 * Returns true if the WebView is now in 4885 * selecting text mode (including if it was already in that mode, and this 4886 * method did nothing). 4887 */ 4888 private boolean setUpSelect(boolean selectWord, int x, int y) { 4889 if (0 == mNativeClass) return false; // client isn't initialized 4890 if (inFullScreenMode()) return false; 4891 if (mSelectingText) return true; 4892 nativeResetSelection(); 4893 if (selectWord && !nativeWordSelection(x, y)) { 4894 selectionDone(); 4895 return false; 4896 } 4897 mSelectCallback = new SelectActionModeCallback(); 4898 mSelectCallback.setWebView(this); 4899 if (startActionMode(mSelectCallback) == null) { 4900 // There is no ActionMode, so do not allow the user to modify a 4901 // selection. 4902 selectionDone(); 4903 return false; 4904 } 4905 mExtendSelection = false; 4906 mSelectingText = mDrawSelectionPointer = true; 4907 // don't let the picture change during text selection 4908 WebViewCore.pauseUpdatePicture(mWebViewCore); 4909 if (nativeHasCursorNode()) { 4910 Rect rect = nativeCursorNodeBounds(); 4911 mSelectX = contentToViewX(rect.left); 4912 mSelectY = contentToViewY(rect.top); 4913 } else if (mLastTouchY > getVisibleTitleHeight()) { 4914 mSelectX = mScrollX + mLastTouchX; 4915 mSelectY = mScrollY + mLastTouchY; 4916 } else { 4917 mSelectX = mScrollX + getViewWidth() / 2; 4918 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4919 } 4920 nativeHideCursor(); 4921 mMinAutoScrollX = 0; 4922 mMaxAutoScrollX = getViewWidth(); 4923 mMinAutoScrollY = 0; 4924 mMaxAutoScrollY = getViewHeightWithTitle(); 4925 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 4926 viewToContentY(mSelectY), mScrollingLayerRect, 4927 mScrollingLayerBounds); 4928 if (mScrollingLayer != 0) { 4929 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 4930 mMinAutoScrollX = Math.max(mMinAutoScrollX, 4931 contentToViewX(mScrollingLayerBounds.left)); 4932 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 4933 contentToViewX(mScrollingLayerBounds.right)); 4934 } 4935 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 4936 mMinAutoScrollY = Math.max(mMinAutoScrollY, 4937 contentToViewY(mScrollingLayerBounds.top)); 4938 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 4939 contentToViewY(mScrollingLayerBounds.bottom)); 4940 } 4941 } 4942 mMinAutoScrollX += SELECT_SCROLL; 4943 mMaxAutoScrollX -= SELECT_SCROLL; 4944 mMinAutoScrollY += SELECT_SCROLL; 4945 mMaxAutoScrollY -= SELECT_SCROLL; 4946 return true; 4947 } 4948 4949 /** 4950 * Use this method to put the WebView into text selection mode. 4951 * Do not rely on this functionality; it will be deprecated in the future. 4952 */ 4953 public void emulateShiftHeld() { 4954 setUpSelect(false, 0, 0); 4955 } 4956 4957 /** 4958 * Select all of the text in this WebView. 4959 * 4960 * @hide pending API council approval. 4961 */ 4962 public void selectAll() { 4963 if (0 == mNativeClass) return; // client isn't initialized 4964 if (inFullScreenMode()) return; 4965 if (!mSelectingText) { 4966 // retrieve a point somewhere within the text 4967 Point select = nativeSelectableText(); 4968 if (!selectText(select.x, select.y)) return; 4969 } 4970 nativeSelectAll(); 4971 mDrawSelectionPointer = false; 4972 mExtendSelection = true; 4973 invalidate(); 4974 } 4975 4976 /** 4977 * Called when the selection has been removed. 4978 */ 4979 void selectionDone() { 4980 if (mSelectingText) { 4981 mSelectingText = false; 4982 // finish is idempotent, so this is fine even if selectionDone was 4983 // called by mSelectCallback.onDestroyActionMode 4984 mSelectCallback.finish(); 4985 mSelectCallback = null; 4986 WebViewCore.resumePriority(); 4987 WebViewCore.resumeUpdatePicture(mWebViewCore); 4988 invalidate(); // redraw without selection 4989 mAutoScrollX = 0; 4990 mAutoScrollY = 0; 4991 mSentAutoScrollMessage = false; 4992 } 4993 } 4994 4995 /** 4996 * Copy the selection to the clipboard 4997 * 4998 * @hide pending API council approval. 4999 */ 5000 public boolean copySelection() { 5001 boolean copiedSomething = false; 5002 String selection = getSelection(); 5003 if (selection != null && selection != "") { 5004 if (DebugFlags.WEB_VIEW) { 5005 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5006 } 5007 Toast.makeText(mContext 5008 , com.android.internal.R.string.text_copied 5009 , Toast.LENGTH_SHORT).show(); 5010 copiedSomething = true; 5011 ClipboardManager cm = (ClipboardManager)getContext() 5012 .getSystemService(Context.CLIPBOARD_SERVICE); 5013 cm.setText(selection); 5014 } 5015 invalidate(); // remove selection region and pointer 5016 return copiedSomething; 5017 } 5018 5019 /** 5020 * Returns the currently highlighted text as a string. 5021 */ 5022 String getSelection() { 5023 if (mNativeClass == 0) return ""; 5024 return nativeGetSelection(); 5025 } 5026 5027 @Override 5028 protected void onAttachedToWindow() { 5029 super.onAttachedToWindow(); 5030 if (hasWindowFocus()) setActive(true); 5031 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5032 if (treeObserver != null) { 5033 if (mGlobalLayoutListener == null) { 5034 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5035 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5036 } 5037 if (mScrollChangedListener == null) { 5038 mScrollChangedListener = new InnerScrollChangedListener(); 5039 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5040 } 5041 } 5042 5043 addAccessibilityApisToJavaScript(); 5044 } 5045 5046 @Override 5047 protected void onDetachedFromWindow() { 5048 clearHelpers(); 5049 mZoomManager.dismissZoomPicker(); 5050 if (hasWindowFocus()) setActive(false); 5051 5052 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5053 if (treeObserver != null) { 5054 if (mGlobalLayoutListener != null) { 5055 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5056 mGlobalLayoutListener = null; 5057 } 5058 if (mScrollChangedListener != null) { 5059 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5060 mScrollChangedListener = null; 5061 } 5062 } 5063 5064 removeAccessibilityApisFromJavaScript(); 5065 5066 super.onDetachedFromWindow(); 5067 } 5068 5069 @Override 5070 protected void onVisibilityChanged(View changedView, int visibility) { 5071 super.onVisibilityChanged(changedView, visibility); 5072 // The zoomManager may be null if the webview is created from XML that 5073 // specifies the view's visibility param as not visible (see http://b/2794841) 5074 if (visibility != View.VISIBLE && mZoomManager != null) { 5075 mZoomManager.dismissZoomPicker(); 5076 } 5077 } 5078 5079 /** 5080 * @deprecated WebView no longer needs to implement 5081 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5082 */ 5083 @Deprecated 5084 public void onChildViewAdded(View parent, View child) {} 5085 5086 /** 5087 * @deprecated WebView no longer needs to implement 5088 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5089 */ 5090 @Deprecated 5091 public void onChildViewRemoved(View p, View child) {} 5092 5093 /** 5094 * @deprecated WebView should not have implemented 5095 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 5096 * does nothing now. 5097 */ 5098 @Deprecated 5099 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5100 } 5101 5102 void setActive(boolean active) { 5103 if (active) { 5104 if (hasFocus()) { 5105 // If our window regained focus, and we have focus, then begin 5106 // drawing the cursor ring 5107 mDrawCursorRing = true; 5108 setFocusControllerActive(true); 5109 if (mNativeClass != 0) { 5110 nativeRecordButtons(true, false, true); 5111 } 5112 } else { 5113 if (!inEditingMode()) { 5114 // If our window gained focus, but we do not have it, do not 5115 // draw the cursor ring. 5116 mDrawCursorRing = false; 5117 setFocusControllerActive(false); 5118 } 5119 // We do not call nativeRecordButtons here because we assume 5120 // that when we lost focus, or window focus, it got called with 5121 // false for the first parameter 5122 } 5123 } else { 5124 if (!mZoomManager.isZoomPickerVisible()) { 5125 /* 5126 * The external zoom controls come in their own window, so our 5127 * window loses focus. Our policy is to not draw the cursor ring 5128 * if our window is not focused, but this is an exception since 5129 * the user can still navigate the web page with the zoom 5130 * controls showing. 5131 */ 5132 mDrawCursorRing = false; 5133 } 5134 mKeysPressed.clear(); 5135 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5136 mTouchMode = TOUCH_DONE_MODE; 5137 if (mNativeClass != 0) { 5138 nativeRecordButtons(false, false, true); 5139 } 5140 setFocusControllerActive(false); 5141 } 5142 invalidate(); 5143 } 5144 5145 // To avoid drawing the cursor ring, and remove the TextView when our window 5146 // loses focus. 5147 @Override 5148 public void onWindowFocusChanged(boolean hasWindowFocus) { 5149 setActive(hasWindowFocus); 5150 if (hasWindowFocus) { 5151 JWebCoreJavaBridge.setActiveWebView(this); 5152 } else { 5153 JWebCoreJavaBridge.removeActiveWebView(this); 5154 } 5155 super.onWindowFocusChanged(hasWindowFocus); 5156 } 5157 5158 /* 5159 * Pass a message to WebCore Thread, telling the WebCore::Page's 5160 * FocusController to be "inactive" so that it will 5161 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5162 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5163 */ 5164 /* package */ void setFocusControllerActive(boolean active) { 5165 if (mWebViewCore == null) return; 5166 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5167 // Need to send this message after the document regains focus. 5168 if (active && mListBoxMessage != null) { 5169 mWebViewCore.sendMessage(mListBoxMessage); 5170 mListBoxMessage = null; 5171 } 5172 } 5173 5174 @Override 5175 protected void onFocusChanged(boolean focused, int direction, 5176 Rect previouslyFocusedRect) { 5177 if (DebugFlags.WEB_VIEW) { 5178 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5179 } 5180 if (focused) { 5181 // When we regain focus, if we have window focus, resume drawing 5182 // the cursor ring 5183 if (hasWindowFocus()) { 5184 mDrawCursorRing = true; 5185 if (mNativeClass != 0) { 5186 nativeRecordButtons(true, false, true); 5187 } 5188 setFocusControllerActive(true); 5189 //} else { 5190 // The WebView has gained focus while we do not have 5191 // windowfocus. When our window lost focus, we should have 5192 // called nativeRecordButtons(false...) 5193 } 5194 } else { 5195 // When we lost focus, unless focus went to the TextView (which is 5196 // true if we are in editing mode), stop drawing the cursor ring. 5197 if (!inEditingMode()) { 5198 mDrawCursorRing = false; 5199 if (mNativeClass != 0) { 5200 nativeRecordButtons(false, false, true); 5201 } 5202 setFocusControllerActive(false); 5203 } 5204 mKeysPressed.clear(); 5205 } 5206 5207 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5208 } 5209 5210 void setGLRectViewport() { 5211 // Use the getGlobalVisibleRect() to get the intersection among the parents 5212 // visible == false means we're clipped - send a null rect down to indicate that 5213 // we should not draw 5214 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5215 if (visible) { 5216 // Then need to invert the Y axis, just for GL 5217 View rootView = getRootView(); 5218 int rootViewHeight = rootView.getHeight(); 5219 int savedWebViewBottom = mGLRectViewport.bottom; 5220 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeight(); 5221 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5222 mGLViewportEmpty = false; 5223 } else { 5224 mGLViewportEmpty = true; 5225 } 5226 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport); 5227 } 5228 5229 /** 5230 * @hide 5231 */ 5232 @Override 5233 protected boolean setFrame(int left, int top, int right, int bottom) { 5234 boolean changed = super.setFrame(left, top, right, bottom); 5235 if (!changed && mHeightCanMeasure) { 5236 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5237 // in WebViewCore after we get the first layout. We do call 5238 // requestLayout() when we get contentSizeChanged(). But the View 5239 // system won't call onSizeChanged if the dimension is not changed. 5240 // In this case, we need to call sendViewSizeZoom() explicitly to 5241 // notify the WebKit about the new dimensions. 5242 sendViewSizeZoom(false); 5243 } 5244 setGLRectViewport(); 5245 return changed; 5246 } 5247 5248 @Override 5249 protected void onSizeChanged(int w, int h, int ow, int oh) { 5250 super.onSizeChanged(w, h, ow, oh); 5251 5252 // adjust the max viewport width depending on the view dimensions. This 5253 // is to ensure the scaling is not going insane. So do not shrink it if 5254 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5255 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5256 if (newMaxViewportWidth > sMaxViewportWidth) { 5257 sMaxViewportWidth = newMaxViewportWidth; 5258 } 5259 5260 mZoomManager.onSizeChanged(w, h, ow, oh); 5261 } 5262 5263 @Override 5264 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5265 super.onScrollChanged(l, t, oldl, oldt); 5266 if (!mInOverScrollMode) { 5267 sendOurVisibleRect(); 5268 // update WebKit if visible title bar height changed. The logic is same 5269 // as getVisibleTitleHeight. 5270 int titleHeight = getTitleHeight(); 5271 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5272 sendViewSizeZoom(false); 5273 } 5274 } 5275 } 5276 5277 @Override 5278 public boolean dispatchKeyEvent(KeyEvent event) { 5279 switch (event.getAction()) { 5280 case KeyEvent.ACTION_DOWN: 5281 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5282 break; 5283 case KeyEvent.ACTION_MULTIPLE: 5284 // Always accept the action. 5285 break; 5286 case KeyEvent.ACTION_UP: 5287 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5288 if (location == -1) { 5289 // We did not receive the key down for this key, so do not 5290 // handle the key up. 5291 return false; 5292 } else { 5293 // We did receive the key down. Handle the key up, and 5294 // remove it from our pressed keys. 5295 mKeysPressed.remove(location); 5296 } 5297 break; 5298 default: 5299 // Accept the action. This should not happen, unless a new 5300 // action is added to KeyEvent. 5301 break; 5302 } 5303 if (inEditingMode() && mWebTextView.isFocused()) { 5304 // Ensure that the WebTextView gets the event, even if it does 5305 // not currently have a bounds. 5306 return mWebTextView.dispatchKeyEvent(event); 5307 } else { 5308 return super.dispatchKeyEvent(event); 5309 } 5310 } 5311 5312 // Here are the snap align logic: 5313 // 1. If it starts nearly horizontally or vertically, snap align; 5314 // 2. If there is a dramitic direction change, let it go; 5315 // 3. If there is a same direction back and forth, lock it. 5316 5317 // adjustable parameters 5318 private int mMinLockSnapReverseDistance; 5319 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5320 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5321 5322 private boolean hitFocusedPlugin(int contentX, int contentY) { 5323 if (DebugFlags.WEB_VIEW) { 5324 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5325 Rect r = nativeFocusNodeBounds(); 5326 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5327 + ", " + r.right + ", " + r.bottom + ")"); 5328 } 5329 return nativeFocusIsPlugin() 5330 && nativeFocusNodeBounds().contains(contentX, contentY); 5331 } 5332 5333 private boolean shouldForwardTouchEvent() { 5334 return mFullScreenHolder != null || (mForwardTouchEvents 5335 && !mSelectingText 5336 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 5337 } 5338 5339 private boolean inFullScreenMode() { 5340 return mFullScreenHolder != null; 5341 } 5342 5343 private void dismissFullScreenMode() { 5344 if (inFullScreenMode()) { 5345 mFullScreenHolder.dismiss(); 5346 mFullScreenHolder = null; 5347 } 5348 } 5349 5350 void onPinchToZoomAnimationStart() { 5351 // cancel the single touch handling 5352 cancelTouch(); 5353 onZoomAnimationStart(); 5354 } 5355 5356 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5357 onZoomAnimationEnd(); 5358 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5359 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5360 // as it may trigger the unwanted fling. 5361 mTouchMode = TOUCH_PINCH_DRAG; 5362 mConfirmMove = true; 5363 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5364 } 5365 5366 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5367 // layer is found. 5368 private void startScrollingLayer(float x, float y) { 5369 int contentX = viewToContentX((int) x + mScrollX); 5370 int contentY = viewToContentY((int) y + mScrollY); 5371 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5372 mScrollingLayerRect, mScrollingLayerBounds); 5373 if (mScrollingLayer != 0) { 5374 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5375 } 5376 } 5377 5378 // 1/(density * density) used to compute the distance between points. 5379 // Computed in init(). 5380 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5381 5382 // The distance between two points reported in onTouchEvent scaled by the 5383 // density of the screen. 5384 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5385 5386 @Override 5387 public boolean onTouchEvent(MotionEvent ev) { 5388 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5389 return false; 5390 } 5391 5392 if (DebugFlags.WEB_VIEW) { 5393 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5394 + " mTouchMode=" + mTouchMode 5395 + " numPointers=" + ev.getPointerCount()); 5396 } 5397 5398 int action = ev.getActionMasked(); 5399 if (ev.getPointerCount() > 1) { // Multi-touch 5400 mIsHandlingMultiTouch = true; 5401 5402 // If WebKit already showed no interests in this sequence of events, 5403 // WebView handles them directly. 5404 if (mPreventDefault == PREVENT_DEFAULT_NO && action == MotionEvent.ACTION_MOVE) { 5405 handleMultiTouchInWebView(ev); 5406 } else { 5407 passMultiTouchToWebKit(ev); 5408 } 5409 return true; 5410 } 5411 5412 // Skip ACTION_MOVE for single touch if it's still handling multi-touch. 5413 if (mIsHandlingMultiTouch && action == MotionEvent.ACTION_MOVE) { 5414 return false; 5415 } 5416 5417 return handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 5418 } 5419 5420 /* 5421 * Common code for single touch and multi-touch. 5422 * (x, y) denotes current focus point, which is the touch point for single touch 5423 * and the middle point for multi-touch. 5424 */ 5425 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5426 long eventTime = ev.getEventTime(); 5427 5428 5429 // Due to the touch screen edge effect, a touch closer to the edge 5430 // always snapped to the edge. As getViewWidth() can be different from 5431 // getWidth() due to the scrollbar, adjusting the point to match 5432 // getViewWidth(). Same applied to the height. 5433 x = Math.min(x, getViewWidth() - 1); 5434 y = Math.min(y, getViewHeightWithTitle() - 1); 5435 5436 int deltaX = mLastTouchX - x; 5437 int deltaY = mLastTouchY - y; 5438 int contentX = viewToContentX(x + mScrollX); 5439 int contentY = viewToContentY(y + mScrollY); 5440 5441 switch (action) { 5442 case MotionEvent.ACTION_DOWN: { 5443 mPreventDefault = PREVENT_DEFAULT_NO; 5444 mConfirmMove = false; 5445 mIsHandlingMultiTouch = false; 5446 mInitialHitTestResult = null; 5447 if (!mScroller.isFinished()) { 5448 // stop the current scroll animation, but if this is 5449 // the start of a fling, allow it to add to the current 5450 // fling's velocity 5451 mScroller.abortAnimation(); 5452 mTouchMode = TOUCH_DRAG_START_MODE; 5453 mConfirmMove = true; 5454 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5455 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5456 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5457 if (getSettings().supportTouchOnly()) { 5458 removeTouchHighlight(true); 5459 } 5460 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5461 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5462 } else { 5463 // commit the short press action for the previous tap 5464 doShortPress(); 5465 mTouchMode = TOUCH_INIT_MODE; 5466 mDeferTouchProcess = (!inFullScreenMode() 5467 && mForwardTouchEvents) ? hitFocusedPlugin( 5468 contentX, contentY) : false; 5469 } 5470 } else { // the normal case 5471 mTouchMode = TOUCH_INIT_MODE; 5472 mDeferTouchProcess = (!inFullScreenMode() 5473 && mForwardTouchEvents) ? hitFocusedPlugin( 5474 contentX, contentY) : false; 5475 mWebViewCore.sendMessage( 5476 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5477 if (getSettings().supportTouchOnly()) { 5478 TouchHighlightData data = new TouchHighlightData(); 5479 data.mX = contentX; 5480 data.mY = contentY; 5481 data.mSlop = viewToContentDimension(mNavSlop); 5482 mWebViewCore.sendMessageDelayed( 5483 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5484 ViewConfiguration.getTapTimeout()); 5485 if (DEBUG_TOUCH_HIGHLIGHT) { 5486 if (getSettings().getNavDump()) { 5487 mTouchHighlightX = (int) x + mScrollX; 5488 mTouchHighlightY = (int) y + mScrollY; 5489 mPrivateHandler.postDelayed(new Runnable() { 5490 public void run() { 5491 mTouchHighlightX = mTouchHighlightY = 0; 5492 invalidate(); 5493 } 5494 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5495 } 5496 } 5497 } 5498 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5499 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5500 (eventTime - mLastTouchUpTime), eventTime); 5501 } 5502 if (mSelectingText) { 5503 mDrawSelectionPointer = false; 5504 mSelectionStarted = nativeStartSelection(contentX, contentY); 5505 if (DebugFlags.WEB_VIEW) { 5506 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5507 } 5508 invalidate(); 5509 } 5510 } 5511 // Trigger the link 5512 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 5513 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 5514 mPrivateHandler.sendEmptyMessageDelayed( 5515 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5516 mPrivateHandler.sendEmptyMessageDelayed( 5517 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5518 if (inFullScreenMode() || mDeferTouchProcess) { 5519 mPreventDefault = PREVENT_DEFAULT_YES; 5520 } else if (mForwardTouchEvents) { 5521 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5522 } else { 5523 mPreventDefault = PREVENT_DEFAULT_NO; 5524 } 5525 // pass the touch events from UI thread to WebCore thread 5526 if (shouldForwardTouchEvent()) { 5527 TouchEventData ted = new TouchEventData(); 5528 ted.mAction = action; 5529 ted.mIds = new int[1]; 5530 ted.mIds[0] = ev.getPointerId(0); 5531 ted.mPoints = new Point[1]; 5532 ted.mPoints[0] = new Point(contentX, contentY); 5533 ted.mMetaState = ev.getMetaState(); 5534 ted.mReprocess = mDeferTouchProcess; 5535 ted.mNativeLayer = nativeScrollableLayer( 5536 contentX, contentY, ted.mNativeLayerRect, null); 5537 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5538 if (mDeferTouchProcess) { 5539 // still needs to set them for compute deltaX/Y 5540 mLastTouchX = x; 5541 mLastTouchY = y; 5542 break; 5543 } 5544 if (!inFullScreenMode()) { 5545 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5546 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5547 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5548 action, 0), TAP_TIMEOUT); 5549 } 5550 } 5551 } 5552 startTouch(x, y, eventTime); 5553 break; 5554 } 5555 case MotionEvent.ACTION_MOVE: { 5556 boolean firstMove = false; 5557 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5558 >= mTouchSlopSquare) { 5559 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5560 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5561 mConfirmMove = true; 5562 firstMove = true; 5563 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5564 mTouchMode = TOUCH_INIT_MODE; 5565 } 5566 if (getSettings().supportTouchOnly()) { 5567 removeTouchHighlight(true); 5568 } 5569 } 5570 // pass the touch events from UI thread to WebCore thread 5571 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5572 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5573 TouchEventData ted = new TouchEventData(); 5574 ted.mAction = action; 5575 ted.mIds = new int[1]; 5576 ted.mIds[0] = ev.getPointerId(0); 5577 ted.mPoints = new Point[1]; 5578 ted.mPoints[0] = new Point(contentX, contentY); 5579 ted.mMetaState = ev.getMetaState(); 5580 ted.mReprocess = mDeferTouchProcess; 5581 ted.mNativeLayer = mScrollingLayer; 5582 ted.mNativeLayerRect.set(mScrollingLayerRect); 5583 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5584 mLastSentTouchTime = eventTime; 5585 if (mDeferTouchProcess) { 5586 break; 5587 } 5588 if (firstMove && !inFullScreenMode()) { 5589 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5590 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5591 action, 0), TAP_TIMEOUT); 5592 } 5593 } 5594 if (mTouchMode == TOUCH_DONE_MODE 5595 || mPreventDefault == PREVENT_DEFAULT_YES) { 5596 // no dragging during scroll zoom animation, or when prevent 5597 // default is yes 5598 break; 5599 } 5600 if (mVelocityTracker == null) { 5601 Log.e(LOGTAG, "Got null mVelocityTracker when " 5602 + "mPreventDefault = " + mPreventDefault 5603 + " mDeferTouchProcess = " + mDeferTouchProcess 5604 + " mTouchMode = " + mTouchMode); 5605 } else { 5606 mVelocityTracker.addMovement(ev); 5607 } 5608 if (mSelectingText && mSelectionStarted) { 5609 if (DebugFlags.WEB_VIEW) { 5610 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5611 } 5612 ViewParent parent = getParent(); 5613 if (parent != null) { 5614 parent.requestDisallowInterceptTouchEvent(true); 5615 } 5616 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 5617 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 5618 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 5619 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 5620 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 5621 && !mSentAutoScrollMessage) { 5622 mSentAutoScrollMessage = true; 5623 mPrivateHandler.sendEmptyMessageDelayed( 5624 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5625 } 5626 if (deltaX != 0 || deltaY != 0) { 5627 nativeExtendSelection(contentX, contentY); 5628 invalidate(); 5629 } 5630 break; 5631 } 5632 5633 if (mTouchMode != TOUCH_DRAG_MODE && 5634 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5635 5636 if (!mConfirmMove) { 5637 break; 5638 } 5639 5640 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5641 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5642 // track mLastTouchTime as we may need to do fling at 5643 // ACTION_UP 5644 mLastTouchTime = eventTime; 5645 break; 5646 } 5647 5648 // Only lock dragging to one axis if we don't have a scale in progress. 5649 // Scaling implies free-roaming movement. Note this is only ever a question 5650 // if mZoomManager.supportsPanDuringZoom() is true. 5651 final ScaleGestureDetector detector = 5652 mZoomManager.getMultiTouchGestureDetector(); 5653 if (detector == null || !detector.isInProgress()) { 5654 // if it starts nearly horizontal or vertical, enforce it 5655 int ax = Math.abs(deltaX); 5656 int ay = Math.abs(deltaY); 5657 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5658 mSnapScrollMode = SNAP_X; 5659 mSnapPositive = deltaX > 0; 5660 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5661 mSnapScrollMode = SNAP_Y; 5662 mSnapPositive = deltaY > 0; 5663 } 5664 } 5665 5666 mTouchMode = TOUCH_DRAG_MODE; 5667 mLastTouchX = x; 5668 mLastTouchY = y; 5669 deltaX = 0; 5670 deltaY = 0; 5671 5672 startScrollingLayer(x, y); 5673 startDrag(); 5674 } 5675 5676 // do pan 5677 boolean done = false; 5678 boolean keepScrollBarsVisible = false; 5679 if (deltaX == 0 && deltaY == 0) { 5680 keepScrollBarsVisible = done = true; 5681 } else { 5682 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5683 int ax = Math.abs(deltaX); 5684 int ay = Math.abs(deltaY); 5685 if (mSnapScrollMode == SNAP_X) { 5686 // radical change means getting out of snap mode 5687 if (ay > MAX_SLOPE_FOR_DIAG * ax 5688 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5689 mSnapScrollMode = SNAP_NONE; 5690 } 5691 // reverse direction means lock in the snap mode 5692 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5693 (mSnapPositive 5694 ? deltaX < -mMinLockSnapReverseDistance 5695 : deltaX > mMinLockSnapReverseDistance)) { 5696 mSnapScrollMode |= SNAP_LOCK; 5697 } 5698 } else { 5699 // radical change means getting out of snap mode 5700 if (ax > MAX_SLOPE_FOR_DIAG * ay 5701 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5702 mSnapScrollMode = SNAP_NONE; 5703 } 5704 // reverse direction means lock in the snap mode 5705 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5706 (mSnapPositive 5707 ? deltaY < -mMinLockSnapReverseDistance 5708 : deltaY > mMinLockSnapReverseDistance)) { 5709 mSnapScrollMode |= SNAP_LOCK; 5710 } 5711 } 5712 } 5713 if (mSnapScrollMode != SNAP_NONE) { 5714 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5715 deltaY = 0; 5716 } else { 5717 deltaX = 0; 5718 } 5719 } 5720 if ((deltaX | deltaY) != 0) { 5721 if (deltaX != 0) { 5722 mLastTouchX = x; 5723 } 5724 if (deltaY != 0) { 5725 mLastTouchY = y; 5726 } 5727 mHeldMotionless = MOTIONLESS_FALSE; 5728 } 5729 mLastTouchTime = eventTime; 5730 } 5731 5732 doDrag(deltaX, deltaY); 5733 5734 // Turn off scrollbars when dragging a layer. 5735 if (keepScrollBarsVisible && 5736 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5737 if (mHeldMotionless != MOTIONLESS_TRUE) { 5738 mHeldMotionless = MOTIONLESS_TRUE; 5739 invalidate(); 5740 } 5741 // keep the scrollbar on the screen even there is no scroll 5742 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5743 false); 5744 // return false to indicate that we can't pan out of the 5745 // view space 5746 return !done; 5747 } 5748 break; 5749 } 5750 case MotionEvent.ACTION_UP: { 5751 if (!isFocused()) requestFocus(); 5752 // pass the touch events from UI thread to WebCore thread 5753 if (shouldForwardTouchEvent()) { 5754 TouchEventData ted = new TouchEventData(); 5755 ted.mIds = new int[1]; 5756 ted.mIds[0] = ev.getPointerId(0); 5757 ted.mAction = action; 5758 ted.mPoints = new Point[1]; 5759 ted.mPoints[0] = new Point(contentX, contentY); 5760 ted.mMetaState = ev.getMetaState(); 5761 ted.mReprocess = mDeferTouchProcess; 5762 ted.mNativeLayer = mScrollingLayer; 5763 ted.mNativeLayerRect.set(mScrollingLayerRect); 5764 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5765 } 5766 mLastTouchUpTime = eventTime; 5767 if (mSentAutoScrollMessage) { 5768 mAutoScrollX = mAutoScrollY = 0; 5769 } 5770 switch (mTouchMode) { 5771 case TOUCH_DOUBLE_TAP_MODE: // double tap 5772 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5773 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5774 if (inFullScreenMode() || mDeferTouchProcess) { 5775 TouchEventData ted = new TouchEventData(); 5776 ted.mIds = new int[1]; 5777 ted.mIds[0] = ev.getPointerId(0); 5778 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5779 ted.mPoints = new Point[1]; 5780 ted.mPoints[0] = new Point(contentX, contentY); 5781 ted.mMetaState = ev.getMetaState(); 5782 ted.mReprocess = mDeferTouchProcess; 5783 ted.mNativeLayer = nativeScrollableLayer( 5784 contentX, contentY, 5785 ted.mNativeLayerRect, null); 5786 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5787 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5788 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5789 mTouchMode = TOUCH_DONE_MODE; 5790 } 5791 break; 5792 case TOUCH_INIT_MODE: // tap 5793 case TOUCH_SHORTPRESS_START_MODE: 5794 case TOUCH_SHORTPRESS_MODE: 5795 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5796 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5797 if (mConfirmMove) { 5798 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5799 " WebCore's response for touch down."); 5800 if (mPreventDefault != PREVENT_DEFAULT_YES 5801 && (computeMaxScrollX() > 0 5802 || computeMaxScrollY() > 0)) { 5803 // If the user has performed a very quick touch 5804 // sequence it is possible that we may get here 5805 // before WebCore has had a chance to process the events. 5806 // In this case, any call to preventDefault in the 5807 // JS touch handler will not have been executed yet. 5808 // Hence we will see both the UI (now) and WebCore 5809 // (when context switches) handling the event, 5810 // regardless of whether the web developer actually 5811 // doeses preventDefault in their touch handler. This 5812 // is the nature of our asynchronous touch model. 5813 5814 // we will not rewrite drag code here, but we 5815 // will try fling if it applies. 5816 WebViewCore.reducePriority(); 5817 // to get better performance, pause updating the 5818 // picture 5819 WebViewCore.pauseUpdatePicture(mWebViewCore); 5820 // fall through to TOUCH_DRAG_MODE 5821 } else { 5822 // WebKit may consume the touch event and modify 5823 // DOM. drawContentPicture() will be called with 5824 // animateSroll as true for better performance. 5825 // Force redraw in high-quality. 5826 invalidate(); 5827 break; 5828 } 5829 } else { 5830 if (mSelectingText) { 5831 // tapping on selection or controls does nothing 5832 if (!nativeHitSelection(contentX, contentY)) { 5833 selectionDone(); 5834 } 5835 break; 5836 } 5837 // only trigger double tap if the WebView is 5838 // scalable 5839 if (mTouchMode == TOUCH_INIT_MODE 5840 && (canZoomIn() || canZoomOut())) { 5841 mPrivateHandler.sendEmptyMessageDelayed( 5842 RELEASE_SINGLE_TAP, ViewConfiguration 5843 .getDoubleTapTimeout()); 5844 } else { 5845 doShortPress(); 5846 } 5847 break; 5848 } 5849 case TOUCH_DRAG_MODE: 5850 case TOUCH_DRAG_LAYER_MODE: 5851 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5852 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5853 // if the user waits a while w/o moving before the 5854 // up, we don't want to do a fling 5855 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5856 if (mVelocityTracker == null) { 5857 Log.e(LOGTAG, "Got null mVelocityTracker when " 5858 + "mPreventDefault = " 5859 + mPreventDefault 5860 + " mDeferTouchProcess = " 5861 + mDeferTouchProcess); 5862 } else { 5863 mVelocityTracker.addMovement(ev); 5864 } 5865 // set to MOTIONLESS_IGNORE so that it won't keep 5866 // removing and sending message in 5867 // drawCoreAndCursorRing() 5868 mHeldMotionless = MOTIONLESS_IGNORE; 5869 doFling(); 5870 break; 5871 } else { 5872 if (mScroller.springBack(mScrollX, mScrollY, 0, 5873 computeMaxScrollX(), 0, 5874 computeMaxScrollY())) { 5875 invalidate(); 5876 } 5877 } 5878 // redraw in high-quality, as we're done dragging 5879 mHeldMotionless = MOTIONLESS_TRUE; 5880 invalidate(); 5881 // fall through 5882 case TOUCH_DRAG_START_MODE: 5883 // TOUCH_DRAG_START_MODE should not happen for the real 5884 // device as we almost certain will get a MOVE. But this 5885 // is possible on emulator. 5886 mLastVelocity = 0; 5887 WebViewCore.resumePriority(); 5888 if (!mSelectingText) { 5889 WebViewCore.resumeUpdatePicture(mWebViewCore); 5890 } 5891 break; 5892 } 5893 stopTouch(); 5894 break; 5895 } 5896 case MotionEvent.ACTION_CANCEL: { 5897 if (mTouchMode == TOUCH_DRAG_MODE) { 5898 mScroller.springBack(mScrollX, mScrollY, 0, 5899 computeMaxScrollX(), 0, computeMaxScrollY()); 5900 invalidate(); 5901 } 5902 cancelWebCoreTouchEvent(contentX, contentY, false); 5903 cancelTouch(); 5904 break; 5905 } 5906 } 5907 return true; 5908 } 5909 5910 private void passMultiTouchToWebKit(MotionEvent ev) { 5911 TouchEventData ted = new TouchEventData(); 5912 ted.mAction = ev.getActionMasked(); 5913 final int count = ev.getPointerCount(); 5914 ted.mIds = new int[count]; 5915 ted.mPoints = new Point[count]; 5916 for (int c = 0; c < count; c++) { 5917 ted.mIds[c] = ev.getPointerId(c); 5918 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5919 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5920 ted.mPoints[c] = new Point(x, y); 5921 } 5922 ted.mMetaState = ev.getMetaState(); 5923 ted.mReprocess = true; 5924 ted.mMotionEvent = MotionEvent.obtain(ev); 5925 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5926 cancelLongPress(); 5927 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5928 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5929 } 5930 5931 private void handleMultiTouchInWebView(MotionEvent ev) { 5932 if (DebugFlags.WEB_VIEW) { 5933 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 5934 + " mTouchMode=" + mTouchMode 5935 + " numPointers=" + ev.getPointerCount() 5936 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 5937 } 5938 5939 final ScaleGestureDetector detector = 5940 mZoomManager.getMultiTouchGestureDetector(); 5941 5942 // A few apps use WebView but don't instantiate gesture detector. 5943 // We don't need to support multi touch for them. 5944 if (detector == null) return; 5945 5946 float x = ev.getX(); 5947 float y = ev.getY(); 5948 5949 if (!detector.isInProgress() && 5950 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 5951 // Insert a fake pointer down event in order to start 5952 // the zoom scale detector. 5953 MotionEvent temp = MotionEvent.obtain(ev); 5954 // Clear the original event and set it to 5955 // ACTION_POINTER_DOWN. 5956 try { 5957 temp.setAction(temp.getAction() & 5958 ~MotionEvent.ACTION_MASK | 5959 MotionEvent.ACTION_POINTER_DOWN); 5960 detector.onTouchEvent(temp); 5961 } finally { 5962 temp.recycle(); 5963 } 5964 } 5965 5966 detector.onTouchEvent(ev); 5967 5968 if (detector.isInProgress()) { 5969 if (DebugFlags.WEB_VIEW) { 5970 Log.v(LOGTAG, "detector is in progress"); 5971 } 5972 mLastTouchTime = ev.getEventTime(); 5973 x = detector.getFocusX(); 5974 y = detector.getFocusY(); 5975 5976 cancelLongPress(); 5977 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5978 if (!mZoomManager.supportsPanDuringZoom()) { 5979 return; 5980 } 5981 mTouchMode = TOUCH_DRAG_MODE; 5982 if (mVelocityTracker == null) { 5983 mVelocityTracker = VelocityTracker.obtain(); 5984 } 5985 } 5986 5987 int action = ev.getActionMasked(); 5988 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5989 cancelTouch(); 5990 action = MotionEvent.ACTION_DOWN; 5991 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5992 // set mLastTouchX/Y to the remaining point 5993 mLastTouchX = Math.round(x); 5994 mLastTouchY = Math.round(y); 5995 mIsHandlingMultiTouch = false; 5996 } else if (action == MotionEvent.ACTION_MOVE) { 5997 // negative x or y indicate it is on the edge, skip it. 5998 if (x < 0 || y < 0) { 5999 return; 6000 } 6001 } 6002 6003 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6004 } 6005 6006 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6007 if (shouldForwardTouchEvent()) { 6008 if (removeEvents) { 6009 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6010 } 6011 TouchEventData ted = new TouchEventData(); 6012 ted.mIds = new int[1]; 6013 ted.mIds[0] = 0; 6014 ted.mPoints = new Point[1]; 6015 ted.mPoints[0] = new Point(x, y); 6016 ted.mAction = MotionEvent.ACTION_CANCEL; 6017 ted.mNativeLayer = nativeScrollableLayer( 6018 x, y, ted.mNativeLayerRect, null); 6019 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6020 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6021 } 6022 } 6023 6024 private void startTouch(float x, float y, long eventTime) { 6025 // Remember where the motion event started 6026 mLastTouchX = Math.round(x); 6027 mLastTouchY = Math.round(y); 6028 mLastTouchTime = eventTime; 6029 mVelocityTracker = VelocityTracker.obtain(); 6030 mSnapScrollMode = SNAP_NONE; 6031 } 6032 6033 private void startDrag() { 6034 WebViewCore.reducePriority(); 6035 // to get better performance, pause updating the picture 6036 WebViewCore.pauseUpdatePicture(mWebViewCore); 6037 if (!mDragFromTextInput) { 6038 nativeHideCursor(); 6039 } 6040 6041 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6042 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6043 mZoomManager.invokeZoomPicker(); 6044 } 6045 } 6046 6047 private void doDrag(int deltaX, int deltaY) { 6048 if ((deltaX | deltaY) != 0) { 6049 int oldX = mScrollX; 6050 int oldY = mScrollY; 6051 int rangeX = computeMaxScrollX(); 6052 int rangeY = computeMaxScrollY(); 6053 int overscrollDistance = mOverscrollDistance; 6054 6055 // Check for the original scrolling layer in case we change 6056 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6057 // reached the edge of a layer but mScrollingLayer will be non-zero 6058 // if we initiated the drag on a layer. 6059 if (mScrollingLayer != 0) { 6060 final int contentX = viewToContentDimension(deltaX); 6061 final int contentY = viewToContentDimension(deltaY); 6062 6063 // Check the scrolling bounds to see if we will actually do any 6064 // scrolling. The rectangle is in document coordinates. 6065 final int maxX = mScrollingLayerRect.right; 6066 final int maxY = mScrollingLayerRect.bottom; 6067 final int resultX = Math.max(0, 6068 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6069 final int resultY = Math.max(0, 6070 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6071 6072 if (resultX != mScrollingLayerRect.left || 6073 resultY != mScrollingLayerRect.top) { 6074 // In case we switched to dragging the page. 6075 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6076 deltaX = contentX; 6077 deltaY = contentY; 6078 oldX = mScrollingLayerRect.left; 6079 oldY = mScrollingLayerRect.top; 6080 rangeX = maxX; 6081 rangeY = maxY; 6082 } else { 6083 // Scroll the main page if we are not going to scroll the 6084 // layer. This does not reset mScrollingLayer in case the 6085 // user changes directions and the layer can scroll the 6086 // other way. 6087 mTouchMode = TOUCH_DRAG_MODE; 6088 } 6089 } 6090 6091 if (mOverScrollGlow != null) { 6092 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6093 } 6094 6095 overScrollBy(deltaX, deltaY, oldX, oldY, 6096 rangeX, rangeY, 6097 mOverscrollDistance, mOverscrollDistance, true); 6098 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6099 invalidate(); 6100 } 6101 } 6102 mZoomManager.keepZoomPickerVisible(); 6103 } 6104 6105 private void stopTouch() { 6106 // we also use mVelocityTracker == null to tell us that we are 6107 // not "moving around", so we can take the slower/prettier 6108 // mode in the drawing code 6109 if (mVelocityTracker != null) { 6110 mVelocityTracker.recycle(); 6111 mVelocityTracker = null; 6112 } 6113 6114 // Release any pulled glows 6115 if (mOverScrollGlow != null) { 6116 mOverScrollGlow.releaseAll(); 6117 } 6118 } 6119 6120 private void cancelTouch() { 6121 // we also use mVelocityTracker == null to tell us that we are 6122 // not "moving around", so we can take the slower/prettier 6123 // mode in the drawing code 6124 if (mVelocityTracker != null) { 6125 mVelocityTracker.recycle(); 6126 mVelocityTracker = null; 6127 } 6128 6129 if ((mTouchMode == TOUCH_DRAG_MODE 6130 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6131 WebViewCore.resumePriority(); 6132 WebViewCore.resumeUpdatePicture(mWebViewCore); 6133 } 6134 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6135 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6136 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6137 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6138 if (getSettings().supportTouchOnly()) { 6139 removeTouchHighlight(true); 6140 } 6141 mHeldMotionless = MOTIONLESS_TRUE; 6142 mTouchMode = TOUCH_DONE_MODE; 6143 nativeHideCursor(); 6144 } 6145 6146 private long mTrackballFirstTime = 0; 6147 private long mTrackballLastTime = 0; 6148 private float mTrackballRemainsX = 0.0f; 6149 private float mTrackballRemainsY = 0.0f; 6150 private int mTrackballXMove = 0; 6151 private int mTrackballYMove = 0; 6152 private boolean mSelectingText = false; 6153 private boolean mSelectionStarted = false; 6154 private boolean mExtendSelection = false; 6155 private boolean mDrawSelectionPointer = false; 6156 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6157 private static final int TRACKBALL_TIMEOUT = 200; 6158 private static final int TRACKBALL_WAIT = 100; 6159 private static final int TRACKBALL_SCALE = 400; 6160 private static final int TRACKBALL_SCROLL_COUNT = 5; 6161 private static final int TRACKBALL_MOVE_COUNT = 10; 6162 private static final int TRACKBALL_MULTIPLIER = 3; 6163 private static final int SELECT_CURSOR_OFFSET = 16; 6164 private static final int SELECT_SCROLL = 5; 6165 private int mSelectX = 0; 6166 private int mSelectY = 0; 6167 private boolean mFocusSizeChanged = false; 6168 private boolean mTrackballDown = false; 6169 private long mTrackballUpTime = 0; 6170 private long mLastCursorTime = 0; 6171 private Rect mLastCursorBounds; 6172 6173 // Set by default; BrowserActivity clears to interpret trackball data 6174 // directly for movement. Currently, the framework only passes 6175 // arrow key events, not trackball events, from one child to the next 6176 private boolean mMapTrackballToArrowKeys = true; 6177 6178 public void setMapTrackballToArrowKeys(boolean setMap) { 6179 mMapTrackballToArrowKeys = setMap; 6180 } 6181 6182 void resetTrackballTime() { 6183 mTrackballLastTime = 0; 6184 } 6185 6186 @Override 6187 public boolean onTrackballEvent(MotionEvent ev) { 6188 long time = ev.getEventTime(); 6189 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6190 if (ev.getY() > 0) pageDown(true); 6191 if (ev.getY() < 0) pageUp(true); 6192 return true; 6193 } 6194 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6195 if (mSelectingText) { 6196 return true; // discard press if copy in progress 6197 } 6198 mTrackballDown = true; 6199 if (mNativeClass == 0) { 6200 return false; 6201 } 6202 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6203 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6204 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6205 nativeSelectBestAt(mLastCursorBounds); 6206 } 6207 if (DebugFlags.WEB_VIEW) { 6208 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6209 + " time=" + time 6210 + " mLastCursorTime=" + mLastCursorTime); 6211 } 6212 if (isInTouchMode()) requestFocusFromTouch(); 6213 return false; // let common code in onKeyDown at it 6214 } 6215 if (ev.getAction() == MotionEvent.ACTION_UP) { 6216 // LONG_PRESS_CENTER is set in common onKeyDown 6217 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6218 mTrackballDown = false; 6219 mTrackballUpTime = time; 6220 if (mSelectingText) { 6221 if (mExtendSelection) { 6222 copySelection(); 6223 selectionDone(); 6224 } else { 6225 mExtendSelection = true; 6226 nativeSetExtendSelection(); 6227 invalidate(); // draw the i-beam instead of the arrow 6228 } 6229 return true; // discard press if copy in progress 6230 } 6231 if (DebugFlags.WEB_VIEW) { 6232 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6233 + " time=" + time 6234 ); 6235 } 6236 return false; // let common code in onKeyUp at it 6237 } 6238 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6239 AccessibilityManager.getInstance(mContext).isEnabled()) { 6240 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6241 return false; 6242 } 6243 if (mTrackballDown) { 6244 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6245 return true; // discard move if trackball is down 6246 } 6247 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6248 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6249 return true; 6250 } 6251 // TODO: alternatively we can do panning as touch does 6252 switchOutDrawHistory(); 6253 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6254 if (DebugFlags.WEB_VIEW) { 6255 Log.v(LOGTAG, "onTrackballEvent time=" 6256 + time + " last=" + mTrackballLastTime); 6257 } 6258 mTrackballFirstTime = time; 6259 mTrackballXMove = mTrackballYMove = 0; 6260 } 6261 mTrackballLastTime = time; 6262 if (DebugFlags.WEB_VIEW) { 6263 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6264 } 6265 mTrackballRemainsX += ev.getX(); 6266 mTrackballRemainsY += ev.getY(); 6267 doTrackball(time, ev.getMetaState()); 6268 return true; 6269 } 6270 6271 void moveSelection(float xRate, float yRate) { 6272 if (mNativeClass == 0) 6273 return; 6274 int width = getViewWidth(); 6275 int height = getViewHeight(); 6276 mSelectX += xRate; 6277 mSelectY += yRate; 6278 int maxX = width + mScrollX; 6279 int maxY = height + mScrollY; 6280 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6281 , mSelectX)); 6282 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6283 , mSelectY)); 6284 if (DebugFlags.WEB_VIEW) { 6285 Log.v(LOGTAG, "moveSelection" 6286 + " mSelectX=" + mSelectX 6287 + " mSelectY=" + mSelectY 6288 + " mScrollX=" + mScrollX 6289 + " mScrollY=" + mScrollY 6290 + " xRate=" + xRate 6291 + " yRate=" + yRate 6292 ); 6293 } 6294 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6295 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6296 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6297 : 0; 6298 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6299 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6300 : 0; 6301 pinScrollBy(scrollX, scrollY, true, 0); 6302 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6303 requestRectangleOnScreen(select); 6304 invalidate(); 6305 } 6306 6307 private int scaleTrackballX(float xRate, int width) { 6308 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6309 int nextXMove = xMove; 6310 if (xMove > 0) { 6311 if (xMove > mTrackballXMove) { 6312 xMove -= mTrackballXMove; 6313 } 6314 } else if (xMove < mTrackballXMove) { 6315 xMove -= mTrackballXMove; 6316 } 6317 mTrackballXMove = nextXMove; 6318 return xMove; 6319 } 6320 6321 private int scaleTrackballY(float yRate, int height) { 6322 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6323 int nextYMove = yMove; 6324 if (yMove > 0) { 6325 if (yMove > mTrackballYMove) { 6326 yMove -= mTrackballYMove; 6327 } 6328 } else if (yMove < mTrackballYMove) { 6329 yMove -= mTrackballYMove; 6330 } 6331 mTrackballYMove = nextYMove; 6332 return yMove; 6333 } 6334 6335 private int keyCodeToSoundsEffect(int keyCode) { 6336 switch(keyCode) { 6337 case KeyEvent.KEYCODE_DPAD_UP: 6338 return SoundEffectConstants.NAVIGATION_UP; 6339 case KeyEvent.KEYCODE_DPAD_RIGHT: 6340 return SoundEffectConstants.NAVIGATION_RIGHT; 6341 case KeyEvent.KEYCODE_DPAD_DOWN: 6342 return SoundEffectConstants.NAVIGATION_DOWN; 6343 case KeyEvent.KEYCODE_DPAD_LEFT: 6344 return SoundEffectConstants.NAVIGATION_LEFT; 6345 } 6346 throw new IllegalArgumentException("keyCode must be one of " + 6347 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6348 "KEYCODE_DPAD_LEFT}."); 6349 } 6350 6351 private void doTrackball(long time, int metaState) { 6352 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6353 if (elapsed == 0) { 6354 elapsed = TRACKBALL_TIMEOUT; 6355 } 6356 float xRate = mTrackballRemainsX * 1000 / elapsed; 6357 float yRate = mTrackballRemainsY * 1000 / elapsed; 6358 int viewWidth = getViewWidth(); 6359 int viewHeight = getViewHeight(); 6360 if (mSelectingText) { 6361 if (!mDrawSelectionPointer) { 6362 // The last selection was made by touch, disabling drawing the 6363 // selection pointer. Allow the trackball to adjust the 6364 // position of the touch control. 6365 mSelectX = contentToViewX(nativeSelectionX()); 6366 mSelectY = contentToViewY(nativeSelectionY()); 6367 mDrawSelectionPointer = mExtendSelection = true; 6368 nativeSetExtendSelection(); 6369 } 6370 moveSelection(scaleTrackballX(xRate, viewWidth), 6371 scaleTrackballY(yRate, viewHeight)); 6372 mTrackballRemainsX = mTrackballRemainsY = 0; 6373 return; 6374 } 6375 float ax = Math.abs(xRate); 6376 float ay = Math.abs(yRate); 6377 float maxA = Math.max(ax, ay); 6378 if (DebugFlags.WEB_VIEW) { 6379 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6380 + " xRate=" + xRate 6381 + " yRate=" + yRate 6382 + " mTrackballRemainsX=" + mTrackballRemainsX 6383 + " mTrackballRemainsY=" + mTrackballRemainsY); 6384 } 6385 int width = mContentWidth - viewWidth; 6386 int height = mContentHeight - viewHeight; 6387 if (width < 0) width = 0; 6388 if (height < 0) height = 0; 6389 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6390 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6391 maxA = Math.max(ax, ay); 6392 int count = Math.max(0, (int) maxA); 6393 int oldScrollX = mScrollX; 6394 int oldScrollY = mScrollY; 6395 if (count > 0) { 6396 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6397 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6398 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6399 KeyEvent.KEYCODE_DPAD_RIGHT; 6400 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6401 if (DebugFlags.WEB_VIEW) { 6402 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6403 + " count=" + count 6404 + " mTrackballRemainsX=" + mTrackballRemainsX 6405 + " mTrackballRemainsY=" + mTrackballRemainsY); 6406 } 6407 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6408 for (int i = 0; i < count; i++) { 6409 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6410 } 6411 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6412 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6413 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6414 } 6415 mTrackballRemainsX = mTrackballRemainsY = 0; 6416 } 6417 if (count >= TRACKBALL_SCROLL_COUNT) { 6418 int xMove = scaleTrackballX(xRate, width); 6419 int yMove = scaleTrackballY(yRate, height); 6420 if (DebugFlags.WEB_VIEW) { 6421 Log.v(LOGTAG, "doTrackball pinScrollBy" 6422 + " count=" + count 6423 + " xMove=" + xMove + " yMove=" + yMove 6424 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6425 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6426 ); 6427 } 6428 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6429 xMove = 0; 6430 } 6431 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6432 yMove = 0; 6433 } 6434 if (xMove != 0 || yMove != 0) { 6435 pinScrollBy(xMove, yMove, true, 0); 6436 } 6437 } 6438 } 6439 6440 /** 6441 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6442 * @return Maximum horizontal scroll position within real content 6443 */ 6444 int computeMaxScrollX() { 6445 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6446 } 6447 6448 /** 6449 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6450 * @return Maximum vertical scroll position within real content 6451 */ 6452 int computeMaxScrollY() { 6453 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6454 - getViewHeightWithTitle(), 0); 6455 } 6456 6457 boolean updateScrollCoordinates(int x, int y) { 6458 int oldX = mScrollX; 6459 int oldY = mScrollY; 6460 mScrollX = x; 6461 mScrollY = y; 6462 if (oldX != mScrollX || oldY != mScrollY) { 6463 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6464 return true; 6465 } else { 6466 return false; 6467 } 6468 } 6469 6470 public void flingScroll(int vx, int vy) { 6471 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6472 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6473 invalidate(); 6474 } 6475 6476 private void doFling() { 6477 if (mVelocityTracker == null) { 6478 return; 6479 } 6480 int maxX = computeMaxScrollX(); 6481 int maxY = computeMaxScrollY(); 6482 6483 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6484 int vx = (int) mVelocityTracker.getXVelocity(); 6485 int vy = (int) mVelocityTracker.getYVelocity(); 6486 6487 int scrollX = mScrollX; 6488 int scrollY = mScrollY; 6489 int overscrollDistance = mOverscrollDistance; 6490 int overflingDistance = mOverflingDistance; 6491 6492 // Use the layer's scroll data if applicable. 6493 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6494 scrollX = mScrollingLayerRect.left; 6495 scrollY = mScrollingLayerRect.top; 6496 maxX = mScrollingLayerRect.right; 6497 maxY = mScrollingLayerRect.bottom; 6498 // No overscrolling for layers. 6499 overscrollDistance = overflingDistance = 0; 6500 } 6501 6502 if (mSnapScrollMode != SNAP_NONE) { 6503 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6504 vy = 0; 6505 } else { 6506 vx = 0; 6507 } 6508 } 6509 if (true /* EMG release: make our fling more like Maps' */) { 6510 // maps cuts their velocity in half 6511 vx = vx * 3 / 4; 6512 vy = vy * 3 / 4; 6513 } 6514 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6515 WebViewCore.resumePriority(); 6516 if (!mSelectingText) { 6517 WebViewCore.resumeUpdatePicture(mWebViewCore); 6518 } 6519 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6520 invalidate(); 6521 } 6522 return; 6523 } 6524 float currentVelocity = mScroller.getCurrVelocity(); 6525 float velocity = (float) Math.hypot(vx, vy); 6526 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6527 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6528 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6529 - Math.atan2(vy, vx))); 6530 final float circle = (float) (Math.PI) * 2.0f; 6531 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6532 vx += currentVelocity * mLastVelX / mLastVelocity; 6533 vy += currentVelocity * mLastVelY / mLastVelocity; 6534 velocity = (float) Math.hypot(vx, vy); 6535 if (DebugFlags.WEB_VIEW) { 6536 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6537 } 6538 } else if (DebugFlags.WEB_VIEW) { 6539 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6540 } 6541 } else if (DebugFlags.WEB_VIEW) { 6542 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6543 + " current=" + currentVelocity 6544 + " vx=" + vx + " vy=" + vy 6545 + " maxX=" + maxX + " maxY=" + maxY 6546 + " scrollX=" + scrollX + " scrollY=" + scrollY 6547 + " layer=" + mScrollingLayer); 6548 } 6549 6550 // Allow sloppy flings without overscrolling at the edges. 6551 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6552 vx = 0; 6553 } 6554 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6555 vy = 0; 6556 } 6557 6558 if (overscrollDistance < overflingDistance) { 6559 if ((vx > 0 && scrollX == -overscrollDistance) || 6560 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6561 vx = 0; 6562 } 6563 if ((vy > 0 && scrollY == -overscrollDistance) || 6564 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6565 vy = 0; 6566 } 6567 } 6568 6569 mLastVelX = vx; 6570 mLastVelY = vy; 6571 mLastVelocity = velocity; 6572 6573 // no horizontal overscroll if the content just fits 6574 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6575 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6576 // Duration is calculated based on velocity. With range boundaries and overscroll 6577 // we may not know how long the final animation will take. (Hence the deprecation 6578 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6579 // resumes during this effect we will take a performance hit. See computeScroll; 6580 // we resume webcore there when the animation is finished. 6581 final int time = mScroller.getDuration(); 6582 6583 // Suppress scrollbars for layer scrolling. 6584 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6585 awakenScrollBars(time); 6586 } 6587 6588 invalidate(); 6589 } 6590 6591 /** 6592 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6593 * in charge of installing this view to the view hierarchy. This view will 6594 * become visible when the user starts scrolling via touch and fade away if 6595 * the user does not interact with it. 6596 * <p/> 6597 * API version 3 introduces a built-in zoom mechanism that is shown 6598 * automatically by the MapView. This is the preferred approach for 6599 * showing the zoom UI. 6600 * 6601 * @deprecated The built-in zoom mechanism is preferred, see 6602 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6603 */ 6604 @Deprecated 6605 public View getZoomControls() { 6606 if (!getSettings().supportZoom()) { 6607 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6608 return null; 6609 } 6610 return mZoomManager.getExternalZoomPicker(); 6611 } 6612 6613 void dismissZoomControl() { 6614 mZoomManager.dismissZoomPicker(); 6615 } 6616 6617 float getDefaultZoomScale() { 6618 return mZoomManager.getDefaultScale(); 6619 } 6620 6621 /** 6622 * @return TRUE if the WebView can be zoomed in. 6623 */ 6624 public boolean canZoomIn() { 6625 return mZoomManager.canZoomIn(); 6626 } 6627 6628 /** 6629 * @return TRUE if the WebView can be zoomed out. 6630 */ 6631 public boolean canZoomOut() { 6632 return mZoomManager.canZoomOut(); 6633 } 6634 6635 /** 6636 * Perform zoom in in the webview 6637 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6638 */ 6639 public boolean zoomIn() { 6640 return mZoomManager.zoomIn(); 6641 } 6642 6643 /** 6644 * Perform zoom out in the webview 6645 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6646 */ 6647 public boolean zoomOut() { 6648 return mZoomManager.zoomOut(); 6649 } 6650 6651 private void updateSelection() { 6652 if (mNativeClass == 0) { 6653 return; 6654 } 6655 // mLastTouchX and mLastTouchY are the point in the current viewport 6656 int contentX = viewToContentX(mLastTouchX + mScrollX); 6657 int contentY = viewToContentY(mLastTouchY + mScrollY); 6658 int slop = viewToContentDimension(mNavSlop); 6659 Rect rect = new Rect(contentX - slop, contentY - slop, 6660 contentX + slop, contentY + slop); 6661 nativeSelectBestAt(rect); 6662 mInitialHitTestResult = hitTestResult(null); 6663 } 6664 6665 /** 6666 * Scroll the focused text field to match the WebTextView 6667 * @param xPercent New x position of the WebTextView from 0 to 1. 6668 */ 6669 /*package*/ void scrollFocusedTextInputX(float xPercent) { 6670 if (!inEditingMode() || mWebViewCore == null) { 6671 return; 6672 } 6673 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 6674 new Float(xPercent)); 6675 } 6676 6677 /** 6678 * Scroll the focused textarea vertically to match the WebTextView 6679 * @param y New y position of the WebTextView in view coordinates 6680 */ 6681 /* package */ void scrollFocusedTextInputY(int y) { 6682 if (!inEditingMode() || mWebViewCore == null) { 6683 return; 6684 } 6685 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 6686 } 6687 6688 /** 6689 * Set our starting point and time for a drag from the WebTextView. 6690 */ 6691 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6692 if (!inEditingMode()) { 6693 return; 6694 } 6695 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 6696 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 6697 mLastTouchTime = eventTime; 6698 if (!mScroller.isFinished()) { 6699 abortAnimation(); 6700 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6701 } 6702 mSnapScrollMode = SNAP_NONE; 6703 mVelocityTracker = VelocityTracker.obtain(); 6704 mTouchMode = TOUCH_DRAG_START_MODE; 6705 } 6706 6707 /** 6708 * Given a motion event from the WebTextView, set its location to our 6709 * coordinates, and handle the event. 6710 */ 6711 /*package*/ boolean textFieldDrag(MotionEvent event) { 6712 if (!inEditingMode()) { 6713 return false; 6714 } 6715 mDragFromTextInput = true; 6716 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6717 (float) (mWebTextView.getTop() - mScrollY)); 6718 boolean result = onTouchEvent(event); 6719 mDragFromTextInput = false; 6720 return result; 6721 } 6722 6723 /** 6724 * Due a touch up from a WebTextView. This will be handled by webkit to 6725 * change the selection. 6726 * @param event MotionEvent in the WebTextView's coordinates. 6727 */ 6728 /*package*/ void touchUpOnTextField(MotionEvent event) { 6729 if (!inEditingMode()) { 6730 return; 6731 } 6732 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6733 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6734 int slop = viewToContentDimension(mNavSlop); 6735 nativeMotionUp(x, y, slop); 6736 } 6737 6738 /** 6739 * Called when pressing the center key or trackball on a textfield. 6740 */ 6741 /*package*/ void centerKeyPressOnTextField() { 6742 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6743 nativeCursorNodePointer()); 6744 } 6745 6746 private void doShortPress() { 6747 if (mNativeClass == 0) { 6748 return; 6749 } 6750 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6751 return; 6752 } 6753 mTouchMode = TOUCH_DONE_MODE; 6754 switchOutDrawHistory(); 6755 // mLastTouchX and mLastTouchY are the point in the current viewport 6756 int contentX = viewToContentX(mLastTouchX + mScrollX); 6757 int contentY = viewToContentY(mLastTouchY + mScrollY); 6758 int slop = viewToContentDimension(mNavSlop); 6759 if (getSettings().supportTouchOnly()) { 6760 removeTouchHighlight(false); 6761 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6762 // use "0" as generation id to inform WebKit to use the same x/y as 6763 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6764 touchUpData.mMoveGeneration = 0; 6765 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6766 } else if (nativePointInNavCache(contentX, contentY, slop)) { 6767 WebViewCore.MotionUpData motionUpData = new WebViewCore 6768 .MotionUpData(); 6769 motionUpData.mFrame = nativeCacheHitFramePointer(); 6770 motionUpData.mNode = nativeCacheHitNodePointer(); 6771 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6772 motionUpData.mX = contentX; 6773 motionUpData.mY = contentY; 6774 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6775 motionUpData); 6776 } else { 6777 doMotionUp(contentX, contentY); 6778 } 6779 } 6780 6781 private void doMotionUp(int contentX, int contentY) { 6782 int slop = viewToContentDimension(mNavSlop); 6783 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 6784 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6785 } 6786 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6787 playSoundEffect(SoundEffectConstants.CLICK); 6788 } 6789 } 6790 6791 /** 6792 * Returns plugin bounds if x/y in content coordinates corresponds to a 6793 * plugin. Otherwise a NULL rectangle is returned. 6794 */ 6795 Rect getPluginBounds(int x, int y) { 6796 int slop = viewToContentDimension(mNavSlop); 6797 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 6798 return nativeCacheHitNodeBounds(); 6799 } else { 6800 return null; 6801 } 6802 } 6803 6804 /* 6805 * Return true if the rect (e.g. plugin) is fully visible and maximized 6806 * inside the WebView. 6807 */ 6808 boolean isRectFitOnScreen(Rect rect) { 6809 final int rectWidth = rect.width(); 6810 final int rectHeight = rect.height(); 6811 final int viewWidth = getViewWidth(); 6812 final int viewHeight = getViewHeightWithTitle(); 6813 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 6814 scale = mZoomManager.computeScaleWithLimits(scale); 6815 return !mZoomManager.willScaleTriggerZoom(scale) 6816 && contentToViewX(rect.left) >= mScrollX 6817 && contentToViewX(rect.right) <= mScrollX + viewWidth 6818 && contentToViewY(rect.top) >= mScrollY 6819 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 6820 } 6821 6822 /* 6823 * Maximize and center the rectangle, specified in the document coordinate 6824 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6825 * animated scroll to center it. If the zoom needs to be changed, find the 6826 * zoom center and do a smooth zoom transition. The rect is in document 6827 * coordinates 6828 */ 6829 void centerFitRect(Rect rect) { 6830 final int rectWidth = rect.width(); 6831 final int rectHeight = rect.height(); 6832 final int viewWidth = getViewWidth(); 6833 final int viewHeight = getViewHeightWithTitle(); 6834 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 6835 / rectHeight); 6836 scale = mZoomManager.computeScaleWithLimits(scale); 6837 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6838 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 6839 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 6840 true, 0); 6841 } else { 6842 float actualScale = mZoomManager.getScale(); 6843 float oldScreenX = rect.left * actualScale - mScrollX; 6844 float rectViewX = rect.left * scale; 6845 float rectViewWidth = rectWidth * scale; 6846 float newMaxWidth = mContentWidth * scale; 6847 float newScreenX = (viewWidth - rectViewWidth) / 2; 6848 // pin the newX to the WebView 6849 if (newScreenX > rectViewX) { 6850 newScreenX = rectViewX; 6851 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6852 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6853 } 6854 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6855 / (scale - actualScale); 6856 float oldScreenY = rect.top * actualScale + getTitleHeight() 6857 - mScrollY; 6858 float rectViewY = rect.top * scale + getTitleHeight(); 6859 float rectViewHeight = rectHeight * scale; 6860 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6861 float newScreenY = (viewHeight - rectViewHeight) / 2; 6862 // pin the newY to the WebView 6863 if (newScreenY > rectViewY) { 6864 newScreenY = rectViewY; 6865 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6866 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6867 } 6868 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6869 / (scale - actualScale); 6870 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6871 mZoomManager.startZoomAnimation(scale, false); 6872 } 6873 } 6874 6875 // Called by JNI to handle a touch on a node representing an email address, 6876 // address, or phone number 6877 private void overrideLoading(String url) { 6878 mCallbackProxy.uiOverrideUrlLoading(url); 6879 } 6880 6881 @Override 6882 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6883 // FIXME: If a subwindow is showing find, and the user touches the 6884 // background window, it can steal focus. 6885 if (mFindIsUp) return false; 6886 boolean result = false; 6887 if (inEditingMode()) { 6888 result = mWebTextView.requestFocus(direction, 6889 previouslyFocusedRect); 6890 } else { 6891 result = super.requestFocus(direction, previouslyFocusedRect); 6892 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 6893 // For cases such as GMail, where we gain focus from a direction, 6894 // we want to move to the first available link. 6895 // FIXME: If there are no visible links, we may not want to 6896 int fakeKeyDirection = 0; 6897 switch(direction) { 6898 case View.FOCUS_UP: 6899 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6900 break; 6901 case View.FOCUS_DOWN: 6902 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6903 break; 6904 case View.FOCUS_LEFT: 6905 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6906 break; 6907 case View.FOCUS_RIGHT: 6908 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6909 break; 6910 default: 6911 return result; 6912 } 6913 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6914 navHandledKey(fakeKeyDirection, 1, true, 0); 6915 } 6916 } 6917 } 6918 return result; 6919 } 6920 6921 @Override 6922 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6923 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6924 6925 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6926 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6927 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6928 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6929 6930 int measuredHeight = heightSize; 6931 int measuredWidth = widthSize; 6932 6933 // Grab the content size from WebViewCore. 6934 int contentHeight = contentToViewDimension(mContentHeight); 6935 int contentWidth = contentToViewDimension(mContentWidth); 6936 6937// Log.d(LOGTAG, "------- measure " + heightMode); 6938 6939 if (heightMode != MeasureSpec.EXACTLY) { 6940 mHeightCanMeasure = true; 6941 measuredHeight = contentHeight; 6942 if (heightMode == MeasureSpec.AT_MOST) { 6943 // If we are larger than the AT_MOST height, then our height can 6944 // no longer be measured and we should scroll internally. 6945 if (measuredHeight > heightSize) { 6946 measuredHeight = heightSize; 6947 mHeightCanMeasure = false; 6948 } else if (measuredHeight < heightSize) { 6949 measuredHeight |= MEASURED_STATE_TOO_SMALL; 6950 } 6951 } 6952 } else { 6953 mHeightCanMeasure = false; 6954 } 6955 if (mNativeClass != 0) { 6956 nativeSetHeightCanMeasure(mHeightCanMeasure); 6957 } 6958 // For the width, always use the given size unless unspecified. 6959 if (widthMode == MeasureSpec.UNSPECIFIED) { 6960 mWidthCanMeasure = true; 6961 measuredWidth = contentWidth; 6962 } else { 6963 if (measuredWidth < contentWidth) { 6964 measuredWidth |= MEASURED_STATE_TOO_SMALL; 6965 } 6966 mWidthCanMeasure = false; 6967 } 6968 6969 synchronized (this) { 6970 setMeasuredDimension(measuredWidth, measuredHeight); 6971 } 6972 } 6973 6974 @Override 6975 public boolean requestChildRectangleOnScreen(View child, 6976 Rect rect, 6977 boolean immediate) { 6978 if (mNativeClass == 0) { 6979 return false; 6980 } 6981 // don't scroll while in zoom animation. When it is done, we will adjust 6982 // the necessary components (e.g., WebTextView if it is in editing mode) 6983 if (mZoomManager.isFixedLengthAnimationInProgress()) { 6984 return false; 6985 } 6986 6987 rect.offset(child.getLeft() - child.getScrollX(), 6988 child.getTop() - child.getScrollY()); 6989 6990 Rect content = new Rect(viewToContentX(mScrollX), 6991 viewToContentY(mScrollY), 6992 viewToContentX(mScrollX + getWidth() 6993 - getVerticalScrollbarWidth()), 6994 viewToContentY(mScrollY + getViewHeightWithTitle())); 6995 content = nativeSubtractLayers(content); 6996 int screenTop = contentToViewY(content.top); 6997 int screenBottom = contentToViewY(content.bottom); 6998 int height = screenBottom - screenTop; 6999 int scrollYDelta = 0; 7000 7001 if (rect.bottom > screenBottom) { 7002 int oneThirdOfScreenHeight = height / 3; 7003 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7004 // If the rectangle is too tall to fit in the bottom two thirds 7005 // of the screen, place it at the top. 7006 scrollYDelta = rect.top - screenTop; 7007 } else { 7008 // If the rectangle will still fit on screen, we want its 7009 // top to be in the top third of the screen. 7010 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7011 } 7012 } else if (rect.top < screenTop) { 7013 scrollYDelta = rect.top - screenTop; 7014 } 7015 7016 int screenLeft = contentToViewX(content.left); 7017 int screenRight = contentToViewX(content.right); 7018 int width = screenRight - screenLeft; 7019 int scrollXDelta = 0; 7020 7021 if (rect.right > screenRight && rect.left > screenLeft) { 7022 if (rect.width() > width) { 7023 scrollXDelta += (rect.left - screenLeft); 7024 } else { 7025 scrollXDelta += (rect.right - screenRight); 7026 } 7027 } else if (rect.left < screenLeft) { 7028 scrollXDelta -= (screenLeft - rect.left); 7029 } 7030 7031 if ((scrollYDelta | scrollXDelta) != 0) { 7032 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7033 } 7034 7035 return false; 7036 } 7037 7038 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7039 String replace, int newStart, int newEnd) { 7040 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7041 arg.mReplace = replace; 7042 arg.mNewStart = newStart; 7043 arg.mNewEnd = newEnd; 7044 mTextGeneration++; 7045 arg.mTextGeneration = mTextGeneration; 7046 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7047 } 7048 7049 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7050 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7051 arg.mEvent = event; 7052 arg.mCurrentText = currentText; 7053 // Increase our text generation number, and pass it to webcore thread 7054 mTextGeneration++; 7055 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7056 // WebKit's document state is not saved until about to leave the page. 7057 // To make sure the host application, like Browser, has the up to date 7058 // document state when it goes to background, we force to save the 7059 // document state. 7060 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7061 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7062 cursorData(), 1000); 7063 } 7064 7065 /* package */ synchronized WebViewCore getWebViewCore() { 7066 return mWebViewCore; 7067 } 7068 7069 //------------------------------------------------------------------------- 7070 // Methods can be called from a separate thread, like WebViewCore 7071 // If it needs to call the View system, it has to send message. 7072 //------------------------------------------------------------------------- 7073 7074 /** 7075 * General handler to receive message coming from webkit thread 7076 */ 7077 class PrivateHandler extends Handler { 7078 @Override 7079 public void handleMessage(Message msg) { 7080 // exclude INVAL_RECT_MSG_ID since it is frequently output 7081 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 7082 if (msg.what >= FIRST_PRIVATE_MSG_ID 7083 && msg.what <= LAST_PRIVATE_MSG_ID) { 7084 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 7085 - FIRST_PRIVATE_MSG_ID]); 7086 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 7087 && msg.what <= LAST_PACKAGE_MSG_ID) { 7088 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 7089 - FIRST_PACKAGE_MSG_ID]); 7090 } else { 7091 Log.v(LOGTAG, Integer.toString(msg.what)); 7092 } 7093 } 7094 if (mWebViewCore == null) { 7095 // after WebView's destroy() is called, skip handling messages. 7096 return; 7097 } 7098 switch (msg.what) { 7099 case REMEMBER_PASSWORD: { 7100 mDatabase.setUsernamePassword( 7101 msg.getData().getString("host"), 7102 msg.getData().getString("username"), 7103 msg.getData().getString("password")); 7104 ((Message) msg.obj).sendToTarget(); 7105 break; 7106 } 7107 case NEVER_REMEMBER_PASSWORD: { 7108 mDatabase.setUsernamePassword( 7109 msg.getData().getString("host"), null, null); 7110 ((Message) msg.obj).sendToTarget(); 7111 break; 7112 } 7113 case PREVENT_DEFAULT_TIMEOUT: { 7114 // if timeout happens, cancel it so that it won't block UI 7115 // to continue handling touch events 7116 if ((msg.arg1 == MotionEvent.ACTION_DOWN 7117 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 7118 || (msg.arg1 == MotionEvent.ACTION_MOVE 7119 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 7120 cancelWebCoreTouchEvent( 7121 viewToContentX(mLastTouchX + mScrollX), 7122 viewToContentY(mLastTouchY + mScrollY), 7123 true); 7124 } 7125 break; 7126 } 7127 case SCROLL_SELECT_TEXT: { 7128 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 7129 mSentAutoScrollMessage = false; 7130 break; 7131 } 7132 if (mScrollingLayer == 0) { 7133 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 7134 } else { 7135 mScrollingLayerRect.left += mAutoScrollX; 7136 mScrollingLayerRect.top += mAutoScrollY; 7137 nativeScrollLayer(mScrollingLayer, 7138 mScrollingLayerRect.left, 7139 mScrollingLayerRect.top); 7140 invalidate(); 7141 } 7142 sendEmptyMessageDelayed( 7143 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 7144 break; 7145 } 7146 case SWITCH_TO_SHORTPRESS: { 7147 mInitialHitTestResult = null; // set by updateSelection() 7148 if (mTouchMode == TOUCH_INIT_MODE) { 7149 if (!getSettings().supportTouchOnly() 7150 && mPreventDefault != PREVENT_DEFAULT_YES) { 7151 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 7152 updateSelection(); 7153 } else { 7154 // set to TOUCH_SHORTPRESS_MODE so that it won't 7155 // trigger double tap any more 7156 mTouchMode = TOUCH_SHORTPRESS_MODE; 7157 } 7158 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 7159 mTouchMode = TOUCH_DONE_MODE; 7160 } 7161 break; 7162 } 7163 case SWITCH_TO_LONGPRESS: { 7164 if (getSettings().supportTouchOnly()) { 7165 removeTouchHighlight(false); 7166 } 7167 if (inFullScreenMode() || mDeferTouchProcess) { 7168 TouchEventData ted = new TouchEventData(); 7169 ted.mAction = WebViewCore.ACTION_LONGPRESS; 7170 ted.mIds = new int[1]; 7171 ted.mIds[0] = 0; 7172 ted.mPoints = new Point[1]; 7173 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 7174 viewToContentY(mLastTouchY + mScrollY)); 7175 // metaState for long press is tricky. Should it be the 7176 // state when the press started or when the press was 7177 // released? Or some intermediary key state? For 7178 // simplicity for now, we don't set it. 7179 ted.mMetaState = 0; 7180 ted.mReprocess = mDeferTouchProcess; 7181 ted.mNativeLayer = nativeScrollableLayer( 7182 ted.mPoints[0].x, ted.mPoints[0].y, 7183 ted.mNativeLayerRect, null); 7184 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7185 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 7186 mTouchMode = TOUCH_DONE_MODE; 7187 performLongClick(); 7188 } 7189 break; 7190 } 7191 case RELEASE_SINGLE_TAP: { 7192 doShortPress(); 7193 break; 7194 } 7195 case SCROLL_TO_MSG_ID: { 7196 // arg1 = animate, arg2 = onlyIfImeIsShowing 7197 // obj = Point(x, y) 7198 if (msg.arg2 == 1) { 7199 // This scroll is intended to bring the textfield into 7200 // view, but is only necessary if the IME is showing 7201 InputMethodManager imm = InputMethodManager.peekInstance(); 7202 if (imm == null || !imm.isAcceptingText() 7203 || (!imm.isActive(WebView.this) && (!inEditingMode() 7204 || !imm.isActive(mWebTextView)))) { 7205 break; 7206 } 7207 } 7208 final Point p = (Point) msg.obj; 7209 if (msg.arg1 == 1) { 7210 spawnContentScrollTo(p.x, p.y); 7211 } else { 7212 setContentScrollTo(p.x, p.y); 7213 } 7214 break; 7215 } 7216 case UPDATE_ZOOM_RANGE: { 7217 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 7218 // mScrollX contains the new minPrefWidth 7219 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 7220 break; 7221 } 7222 case REPLACE_BASE_CONTENT: { 7223 nativeReplaceBaseContent(msg.arg1); 7224 break; 7225 } 7226 case NEW_PICTURE_MSG_ID: { 7227 // called for new content 7228 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 7229 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion.getBounds(), 7230 getSettings().getShowVisualIndicator()); 7231 final Point viewSize = draw.mViewSize; 7232 WebViewCore.ViewState viewState = draw.mViewState; 7233 boolean isPictureAfterFirstLayout = viewState != null; 7234 if (isPictureAfterFirstLayout) { 7235 // Reset the last sent data here since dealing with new page. 7236 mLastWidthSent = 0; 7237 mZoomManager.onFirstLayout(draw); 7238 if (!mDrawHistory) { 7239 // Do not send the scroll event for this particular 7240 // scroll message. Note that a scroll event may 7241 // still be fired if the user scrolls before the 7242 // message can be handled. 7243 mSendScrollEvent = false; 7244 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 7245 mSendScrollEvent = true; 7246 7247 // As we are on a new page, remove the WebTextView. This 7248 // is necessary for page loads driven by webkit, and in 7249 // particular when the user was on a password field, so 7250 // the WebTextView was visible. 7251 clearTextEntry(); 7252 } 7253 } 7254 7255 // We update the layout (i.e. request a layout from the 7256 // view system) if the last view size that we sent to 7257 // WebCore matches the view size of the picture we just 7258 // received in the fixed dimension. 7259 final boolean updateLayout = viewSize.x == mLastWidthSent 7260 && viewSize.y == mLastHeightSent; 7261 // Don't send scroll event for picture coming from webkit, 7262 // since the new picture may cause a scroll event to override 7263 // the saved history scroll position. 7264 mSendScrollEvent = false; 7265 recordNewContentSize(draw.mContentSize.x, 7266 draw.mContentSize.y, updateLayout); 7267 mSendScrollEvent = true; 7268 if (DebugFlags.WEB_VIEW) { 7269 Rect b = draw.mInvalRegion.getBounds(); 7270 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 7271 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 7272 } 7273 invalidateContentRect(draw.mInvalRegion.getBounds()); 7274 7275 if (mPictureListener != null) { 7276 mPictureListener.onNewPicture(WebView.this, capturePicture()); 7277 } 7278 7279 // update the zoom information based on the new picture 7280 mZoomManager.onNewPicture(draw); 7281 7282 if (draw.mFocusSizeChanged && inEditingMode()) { 7283 mFocusSizeChanged = true; 7284 } 7285 if (isPictureAfterFirstLayout) { 7286 mViewManager.postReadyToDrawAll(); 7287 } 7288 break; 7289 } 7290 case WEBCORE_INITIALIZED_MSG_ID: 7291 // nativeCreate sets mNativeClass to a non-zero value 7292 nativeCreate(msg.arg1); 7293 break; 7294 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 7295 // Make sure that the textfield is currently focused 7296 // and representing the same node as the pointer. 7297 if (inEditingMode() && 7298 mWebTextView.isSameTextField(msg.arg1)) { 7299 if (msg.getData().getBoolean("password")) { 7300 Spannable text = (Spannable) mWebTextView.getText(); 7301 int start = Selection.getSelectionStart(text); 7302 int end = Selection.getSelectionEnd(text); 7303 mWebTextView.setInPassword(true); 7304 // Restore the selection, which may have been 7305 // ruined by setInPassword. 7306 Spannable pword = 7307 (Spannable) mWebTextView.getText(); 7308 Selection.setSelection(pword, start, end); 7309 // If the text entry has created more events, ignore 7310 // this one. 7311 } else if (msg.arg2 == mTextGeneration) { 7312 String text = (String) msg.obj; 7313 if (null == text) { 7314 text = ""; 7315 } 7316 mWebTextView.setTextAndKeepSelection(text); 7317 } 7318 } 7319 break; 7320 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 7321 displaySoftKeyboard(true); 7322 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 7323 case UPDATE_TEXT_SELECTION_MSG_ID: 7324 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 7325 (WebViewCore.TextSelectionData) msg.obj); 7326 break; 7327 case FORM_DID_BLUR: 7328 if (inEditingMode() 7329 && mWebTextView.isSameTextField(msg.arg1)) { 7330 hideSoftKeyboard(); 7331 } 7332 break; 7333 case RETURN_LABEL: 7334 if (inEditingMode() 7335 && mWebTextView.isSameTextField(msg.arg1)) { 7336 mWebTextView.setHint((String) msg.obj); 7337 InputMethodManager imm 7338 = InputMethodManager.peekInstance(); 7339 // The hint is propagated to the IME in 7340 // onCreateInputConnection. If the IME is already 7341 // active, restart it so that its hint text is updated. 7342 if (imm != null && imm.isActive(mWebTextView)) { 7343 imm.restartInput(mWebTextView); 7344 } 7345 } 7346 break; 7347 case UNHANDLED_NAV_KEY: 7348 navHandledKey(msg.arg1, 1, false, 0); 7349 break; 7350 case UPDATE_TEXT_ENTRY_MSG_ID: 7351 // this is sent after finishing resize in WebViewCore. Make 7352 // sure the text edit box is still on the screen. 7353 if (inEditingMode() && nativeCursorIsTextInput()) { 7354 rebuildWebTextView(); 7355 } 7356 break; 7357 case CLEAR_TEXT_ENTRY: 7358 clearTextEntry(); 7359 break; 7360 case INVAL_RECT_MSG_ID: { 7361 Rect r = (Rect)msg.obj; 7362 if (r == null) { 7363 invalidate(); 7364 } else { 7365 // we need to scale r from content into view coords, 7366 // which viewInvalidate() does for us 7367 viewInvalidate(r.left, r.top, r.right, r.bottom); 7368 } 7369 break; 7370 } 7371 case REQUEST_FORM_DATA: 7372 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7373 if (mWebTextView.isSameTextField(msg.arg1)) { 7374 mWebTextView.setAdapterCustom(adapter); 7375 } 7376 break; 7377 case RESUME_WEBCORE_PRIORITY: 7378 WebViewCore.resumePriority(); 7379 WebViewCore.resumeUpdatePicture(mWebViewCore); 7380 break; 7381 7382 case LONG_PRESS_CENTER: 7383 // as this is shared by keydown and trackballdown, reset all 7384 // the states 7385 mGotCenterDown = false; 7386 mTrackballDown = false; 7387 performLongClick(); 7388 break; 7389 7390 case WEBCORE_NEED_TOUCH_EVENTS: 7391 mForwardTouchEvents = (msg.arg1 != 0); 7392 break; 7393 7394 case PREVENT_TOUCH_ID: 7395 if (inFullScreenMode()) { 7396 break; 7397 } 7398 if (msg.obj == null) { 7399 if (msg.arg1 == MotionEvent.ACTION_DOWN 7400 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7401 // if prevent default is called from WebCore, UI 7402 // will not handle the rest of the touch events any 7403 // more. 7404 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7405 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7406 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 7407 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7408 // the return for the first ACTION_MOVE will decide 7409 // whether UI will handle touch or not. Currently no 7410 // support for alternating prevent default 7411 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7412 : PREVENT_DEFAULT_NO; 7413 } 7414 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7415 mTouchHighlightRegion.setEmpty(); 7416 } 7417 } else { 7418 TouchEventData ted = (TouchEventData) msg.obj; 7419 7420 if (ted.mPoints.length > 1) { // multi-touch 7421 if (ted.mAction == MotionEvent.ACTION_POINTER_UP) { 7422 mIsHandlingMultiTouch = false; 7423 } 7424 if (msg.arg2 == 0) { 7425 mPreventDefault = PREVENT_DEFAULT_NO; 7426 handleMultiTouchInWebView(ted.mMotionEvent); 7427 } else { 7428 mPreventDefault = PREVENT_DEFAULT_YES; 7429 } 7430 break; 7431 } 7432 7433 // prevent default is not called in WebCore, so the 7434 // message needs to be reprocessed in UI 7435 if (msg.arg2 == 0) { 7436 // Following is for single touch. 7437 switch (ted.mAction) { 7438 case MotionEvent.ACTION_DOWN: 7439 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 7440 - mScrollX; 7441 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 7442 - mScrollY; 7443 mDeferTouchMode = TOUCH_INIT_MODE; 7444 break; 7445 case MotionEvent.ACTION_MOVE: { 7446 // no snapping in defer process 7447 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 7448 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 7449 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7450 mDeferTouchMode = TOUCH_DRAG_MODE; 7451 mLastDeferTouchX = x; 7452 mLastDeferTouchY = y; 7453 startScrollingLayer(x, y); 7454 startDrag(); 7455 } 7456 int deltaX = pinLocX((int) (mScrollX 7457 + mLastDeferTouchX - x)) 7458 - mScrollX; 7459 int deltaY = pinLocY((int) (mScrollY 7460 + mLastDeferTouchY - y)) 7461 - mScrollY; 7462 doDrag(deltaX, deltaY); 7463 if (deltaX != 0) mLastDeferTouchX = x; 7464 if (deltaY != 0) mLastDeferTouchY = y; 7465 break; 7466 } 7467 case MotionEvent.ACTION_UP: 7468 case MotionEvent.ACTION_CANCEL: 7469 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7470 // no fling in defer process 7471 mScroller.springBack(mScrollX, mScrollY, 0, 7472 computeMaxScrollX(), 0, 7473 computeMaxScrollY()); 7474 invalidate(); 7475 WebViewCore.resumePriority(); 7476 WebViewCore.resumeUpdatePicture(mWebViewCore); 7477 } 7478 mDeferTouchMode = TOUCH_DONE_MODE; 7479 break; 7480 case WebViewCore.ACTION_DOUBLETAP: 7481 // doDoubleTap() needs mLastTouchX/Y as anchor 7482 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 7483 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 7484 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7485 mDeferTouchMode = TOUCH_DONE_MODE; 7486 break; 7487 case WebViewCore.ACTION_LONGPRESS: 7488 HitTestResult hitTest = getHitTestResult(); 7489 if (hitTest != null && hitTest.mType 7490 != HitTestResult.UNKNOWN_TYPE) { 7491 performLongClick(); 7492 } 7493 mDeferTouchMode = TOUCH_DONE_MODE; 7494 break; 7495 } 7496 } 7497 } 7498 break; 7499 7500 case REQUEST_KEYBOARD: 7501 if (msg.arg1 == 0) { 7502 hideSoftKeyboard(); 7503 } else { 7504 displaySoftKeyboard(false); 7505 } 7506 break; 7507 7508 case FIND_AGAIN: 7509 // Ignore if find has been dismissed. 7510 if (mFindIsUp && mFindCallback != null) { 7511 mFindCallback.findAll(); 7512 } 7513 break; 7514 7515 case DRAG_HELD_MOTIONLESS: 7516 mHeldMotionless = MOTIONLESS_TRUE; 7517 invalidate(); 7518 // fall through to keep scrollbars awake 7519 7520 case AWAKEN_SCROLL_BARS: 7521 if (mTouchMode == TOUCH_DRAG_MODE 7522 && mHeldMotionless == MOTIONLESS_TRUE) { 7523 awakenScrollBars(ViewConfiguration 7524 .getScrollDefaultDelay(), false); 7525 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7526 .obtainMessage(AWAKEN_SCROLL_BARS), 7527 ViewConfiguration.getScrollDefaultDelay()); 7528 } 7529 break; 7530 7531 case DO_MOTION_UP: 7532 doMotionUp(msg.arg1, msg.arg2); 7533 break; 7534 7535 case SCREEN_ON: 7536 setKeepScreenOn(msg.arg1 == 1); 7537 break; 7538 7539 case SHOW_FULLSCREEN: { 7540 View view = (View) msg.obj; 7541 int npp = msg.arg1; 7542 7543 if (inFullScreenMode()) { 7544 Log.w(LOGTAG, "Should not have another full screen."); 7545 dismissFullScreenMode(); 7546 } 7547 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7548 mFullScreenHolder.setContentView(view); 7549 mFullScreenHolder.setCancelable(false); 7550 mFullScreenHolder.setCanceledOnTouchOutside(false); 7551 mFullScreenHolder.show(); 7552 7553 break; 7554 } 7555 case HIDE_FULLSCREEN: 7556 dismissFullScreenMode(); 7557 break; 7558 7559 case DOM_FOCUS_CHANGED: 7560 if (inEditingMode()) { 7561 nativeClearCursor(); 7562 rebuildWebTextView(); 7563 } 7564 break; 7565 7566 case SHOW_RECT_MSG_ID: { 7567 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7568 int x = mScrollX; 7569 int left = contentToViewX(data.mLeft); 7570 int width = contentToViewDimension(data.mWidth); 7571 int maxWidth = contentToViewDimension(data.mContentWidth); 7572 int viewWidth = getViewWidth(); 7573 if (width < viewWidth) { 7574 // center align 7575 x += left + width / 2 - mScrollX - viewWidth / 2; 7576 } else { 7577 x += (int) (left + data.mXPercentInDoc * width 7578 - mScrollX - data.mXPercentInView * viewWidth); 7579 } 7580 if (DebugFlags.WEB_VIEW) { 7581 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7582 width + ",maxWidth=" + maxWidth + 7583 ",viewWidth=" + viewWidth + ",x=" 7584 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7585 ",xPercentInView=" + data.mXPercentInView+ ")"); 7586 } 7587 // use the passing content width to cap x as the current 7588 // mContentWidth may not be updated yet 7589 x = Math.max(0, 7590 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7591 int top = contentToViewY(data.mTop); 7592 int height = contentToViewDimension(data.mHeight); 7593 int maxHeight = contentToViewDimension(data.mContentHeight); 7594 int viewHeight = getViewHeight(); 7595 int y = (int) (top + data.mYPercentInDoc * height - 7596 data.mYPercentInView * viewHeight); 7597 if (DebugFlags.WEB_VIEW) { 7598 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7599 height + ",maxHeight=" + maxHeight + 7600 ",viewHeight=" + viewHeight + ",y=" 7601 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7602 ",yPercentInView=" + data.mYPercentInView+ ")"); 7603 } 7604 // use the passing content height to cap y as the current 7605 // mContentHeight may not be updated yet 7606 y = Math.max(0, 7607 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7608 // We need to take into account the visible title height 7609 // when scrolling since y is an absolute view position. 7610 y = Math.max(0, y - getVisibleTitleHeight()); 7611 scrollTo(x, y); 7612 } 7613 break; 7614 7615 case CENTER_FIT_RECT: 7616 centerFitRect((Rect)msg.obj); 7617 break; 7618 7619 case SET_SCROLLBAR_MODES: 7620 mHorizontalScrollBarMode = msg.arg1; 7621 mVerticalScrollBarMode = msg.arg2; 7622 break; 7623 7624 case SELECTION_STRING_CHANGED: 7625 if (mAccessibilityInjector != null) { 7626 String selectionString = (String) msg.obj; 7627 mAccessibilityInjector.onSelectionStringChange(selectionString); 7628 } 7629 break; 7630 7631 case SET_TOUCH_HIGHLIGHT_RECTS: 7632 invalidate(mTouchHighlightRegion.getBounds()); 7633 mTouchHighlightRegion.setEmpty(); 7634 if (msg.obj != null) { 7635 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 7636 for (Rect rect : rects) { 7637 Rect viewRect = contentToViewRect(rect); 7638 // some sites, like stories in nytimes.com, set 7639 // mouse event handler in the top div. It is not 7640 // user friendly to highlight the div if it covers 7641 // more than half of the screen. 7642 if (viewRect.width() < getWidth() >> 1 7643 || viewRect.height() < getHeight() >> 1) { 7644 mTouchHighlightRegion.union(viewRect); 7645 invalidate(viewRect); 7646 } else { 7647 Log.w(LOGTAG, "Skip the huge selection rect:" 7648 + viewRect); 7649 } 7650 } 7651 } 7652 break; 7653 7654 case SAVE_WEBARCHIVE_FINISHED: 7655 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7656 if (saveMessage.mCallback != null) { 7657 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7658 } 7659 break; 7660 7661 case SET_AUTOFILLABLE: 7662 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 7663 if (mWebTextView != null) { 7664 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 7665 rebuildWebTextView(); 7666 } 7667 break; 7668 7669 case AUTOFILL_COMPLETE: 7670 if (mWebTextView != null) { 7671 // Clear the WebTextView adapter when AutoFill finishes 7672 // so that the drop down gets cleared. 7673 mWebTextView.setAdapterCustom(null); 7674 } 7675 break; 7676 7677 case SELECT_AT: 7678 nativeSelectAt(msg.arg1, msg.arg2); 7679 break; 7680 7681 default: 7682 super.handleMessage(msg); 7683 break; 7684 } 7685 } 7686 } 7687 7688 /** 7689 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7690 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7691 */ 7692 private void updateTextSelectionFromMessage(int nodePointer, 7693 int textGeneration, WebViewCore.TextSelectionData data) { 7694 if (inEditingMode() 7695 && mWebTextView.isSameTextField(nodePointer) 7696 && textGeneration == mTextGeneration) { 7697 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7698 } 7699 } 7700 7701 // Class used to use a dropdown for a <select> element 7702 private class InvokeListBox implements Runnable { 7703 // Whether the listbox allows multiple selection. 7704 private boolean mMultiple; 7705 // Passed in to a list with multiple selection to tell 7706 // which items are selected. 7707 private int[] mSelectedArray; 7708 // Passed in to a list with single selection to tell 7709 // where the initial selection is. 7710 private int mSelection; 7711 7712 private Container[] mContainers; 7713 7714 // Need these to provide stable ids to my ArrayAdapter, 7715 // which normally does not have stable ids. (Bug 1250098) 7716 private class Container extends Object { 7717 /** 7718 * Possible values for mEnabled. Keep in sync with OptionStatus in 7719 * WebViewCore.cpp 7720 */ 7721 final static int OPTGROUP = -1; 7722 final static int OPTION_DISABLED = 0; 7723 final static int OPTION_ENABLED = 1; 7724 7725 String mString; 7726 int mEnabled; 7727 int mId; 7728 7729 public String toString() { 7730 return mString; 7731 } 7732 } 7733 7734 /** 7735 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7736 * and allow filtering. 7737 */ 7738 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7739 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7740 super(context, 7741 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7742 com.android.internal.R.layout.select_dialog_singlechoice, 7743 objects); 7744 } 7745 7746 @Override 7747 public View getView(int position, View convertView, 7748 ViewGroup parent) { 7749 // Always pass in null so that we will get a new CheckedTextView 7750 // Otherwise, an item which was previously used as an <optgroup> 7751 // element (i.e. has no check), could get used as an <option> 7752 // element, which needs a checkbox/radio, but it would not have 7753 // one. 7754 convertView = super.getView(position, null, parent); 7755 Container c = item(position); 7756 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7757 // ListView does not draw dividers between disabled and 7758 // enabled elements. Use a LinearLayout to provide dividers 7759 LinearLayout layout = new LinearLayout(mContext); 7760 layout.setOrientation(LinearLayout.VERTICAL); 7761 if (position > 0) { 7762 View dividerTop = new View(mContext); 7763 dividerTop.setBackgroundResource( 7764 android.R.drawable.divider_horizontal_bright); 7765 layout.addView(dividerTop); 7766 } 7767 7768 if (Container.OPTGROUP == c.mEnabled) { 7769 // Currently select_dialog_multichoice and 7770 // select_dialog_singlechoice are CheckedTextViews. If 7771 // that changes, the class cast will no longer be valid. 7772 Assert.assertTrue( 7773 convertView instanceof CheckedTextView); 7774 ((CheckedTextView) convertView).setCheckMarkDrawable( 7775 null); 7776 } else { 7777 // c.mEnabled == Container.OPTION_DISABLED 7778 // Draw the disabled element in a disabled state. 7779 convertView.setEnabled(false); 7780 } 7781 7782 layout.addView(convertView); 7783 if (position < getCount() - 1) { 7784 View dividerBottom = new View(mContext); 7785 dividerBottom.setBackgroundResource( 7786 android.R.drawable.divider_horizontal_bright); 7787 layout.addView(dividerBottom); 7788 } 7789 return layout; 7790 } 7791 return convertView; 7792 } 7793 7794 @Override 7795 public boolean hasStableIds() { 7796 // AdapterView's onChanged method uses this to determine whether 7797 // to restore the old state. Return false so that the old (out 7798 // of date) state does not replace the new, valid state. 7799 return false; 7800 } 7801 7802 private Container item(int position) { 7803 if (position < 0 || position >= getCount()) { 7804 return null; 7805 } 7806 return (Container) getItem(position); 7807 } 7808 7809 @Override 7810 public long getItemId(int position) { 7811 Container item = item(position); 7812 if (item == null) { 7813 return -1; 7814 } 7815 return item.mId; 7816 } 7817 7818 @Override 7819 public boolean areAllItemsEnabled() { 7820 return false; 7821 } 7822 7823 @Override 7824 public boolean isEnabled(int position) { 7825 Container item = item(position); 7826 if (item == null) { 7827 return false; 7828 } 7829 return Container.OPTION_ENABLED == item.mEnabled; 7830 } 7831 } 7832 7833 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7834 mMultiple = true; 7835 mSelectedArray = selected; 7836 7837 int length = array.length; 7838 mContainers = new Container[length]; 7839 for (int i = 0; i < length; i++) { 7840 mContainers[i] = new Container(); 7841 mContainers[i].mString = array[i]; 7842 mContainers[i].mEnabled = enabled[i]; 7843 mContainers[i].mId = i; 7844 } 7845 } 7846 7847 private InvokeListBox(String[] array, int[] enabled, int selection) { 7848 mSelection = selection; 7849 mMultiple = false; 7850 7851 int length = array.length; 7852 mContainers = new Container[length]; 7853 for (int i = 0; i < length; i++) { 7854 mContainers[i] = new Container(); 7855 mContainers[i].mString = array[i]; 7856 mContainers[i].mEnabled = enabled[i]; 7857 mContainers[i].mId = i; 7858 } 7859 } 7860 7861 /* 7862 * Whenever the data set changes due to filtering, this class ensures 7863 * that the checked item remains checked. 7864 */ 7865 private class SingleDataSetObserver extends DataSetObserver { 7866 private long mCheckedId; 7867 private ListView mListView; 7868 private Adapter mAdapter; 7869 7870 /* 7871 * Create a new observer. 7872 * @param id The ID of the item to keep checked. 7873 * @param l ListView for getting and clearing the checked states 7874 * @param a Adapter for getting the IDs 7875 */ 7876 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7877 mCheckedId = id; 7878 mListView = l; 7879 mAdapter = a; 7880 } 7881 7882 public void onChanged() { 7883 // The filter may have changed which item is checked. Find the 7884 // item that the ListView thinks is checked. 7885 int position = mListView.getCheckedItemPosition(); 7886 long id = mAdapter.getItemId(position); 7887 if (mCheckedId != id) { 7888 // Clear the ListView's idea of the checked item, since 7889 // it is incorrect 7890 mListView.clearChoices(); 7891 // Search for mCheckedId. If it is in the filtered list, 7892 // mark it as checked 7893 int count = mAdapter.getCount(); 7894 for (int i = 0; i < count; i++) { 7895 if (mAdapter.getItemId(i) == mCheckedId) { 7896 mListView.setItemChecked(i, true); 7897 break; 7898 } 7899 } 7900 } 7901 } 7902 7903 public void onInvalidate() {} 7904 } 7905 7906 public void run() { 7907 final ListView listView = (ListView) LayoutInflater.from(mContext) 7908 .inflate(com.android.internal.R.layout.select_dialog, null); 7909 final MyArrayListAdapter adapter = new 7910 MyArrayListAdapter(mContext, mContainers, mMultiple); 7911 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7912 .setView(listView).setCancelable(true) 7913 .setInverseBackgroundForced(true); 7914 7915 if (mMultiple) { 7916 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7917 public void onClick(DialogInterface dialog, int which) { 7918 mWebViewCore.sendMessage( 7919 EventHub.LISTBOX_CHOICES, 7920 adapter.getCount(), 0, 7921 listView.getCheckedItemPositions()); 7922 }}); 7923 b.setNegativeButton(android.R.string.cancel, 7924 new DialogInterface.OnClickListener() { 7925 public void onClick(DialogInterface dialog, int which) { 7926 mWebViewCore.sendMessage( 7927 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7928 }}); 7929 } 7930 mListBoxDialog = b.create(); 7931 listView.setAdapter(adapter); 7932 listView.setFocusableInTouchMode(true); 7933 // There is a bug (1250103) where the checks in a ListView with 7934 // multiple items selected are associated with the positions, not 7935 // the ids, so the items do not properly retain their checks when 7936 // filtered. Do not allow filtering on multiple lists until 7937 // that bug is fixed. 7938 7939 listView.setTextFilterEnabled(!mMultiple); 7940 if (mMultiple) { 7941 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7942 int length = mSelectedArray.length; 7943 for (int i = 0; i < length; i++) { 7944 listView.setItemChecked(mSelectedArray[i], true); 7945 } 7946 } else { 7947 listView.setOnItemClickListener(new OnItemClickListener() { 7948 public void onItemClick(AdapterView parent, View v, 7949 int position, long id) { 7950 // Rather than sending the message right away, send it 7951 // after the page regains focus. 7952 mListBoxMessage = Message.obtain(null, 7953 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 7954 mListBoxDialog.dismiss(); 7955 mListBoxDialog = null; 7956 } 7957 }); 7958 if (mSelection != -1) { 7959 listView.setSelection(mSelection); 7960 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7961 listView.setItemChecked(mSelection, true); 7962 DataSetObserver observer = new SingleDataSetObserver( 7963 adapter.getItemId(mSelection), listView, adapter); 7964 adapter.registerDataSetObserver(observer); 7965 } 7966 } 7967 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7968 public void onCancel(DialogInterface dialog) { 7969 mWebViewCore.sendMessage( 7970 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7971 mListBoxDialog = null; 7972 } 7973 }); 7974 mListBoxDialog.show(); 7975 } 7976 } 7977 7978 private Message mListBoxMessage; 7979 7980 /* 7981 * Request a dropdown menu for a listbox with multiple selection. 7982 * 7983 * @param array Labels for the listbox. 7984 * @param enabledArray State for each element in the list. See static 7985 * integers in Container class. 7986 * @param selectedArray Which positions are initally selected. 7987 */ 7988 void requestListBox(String[] array, int[] enabledArray, int[] 7989 selectedArray) { 7990 mPrivateHandler.post( 7991 new InvokeListBox(array, enabledArray, selectedArray)); 7992 } 7993 7994 /* 7995 * Request a dropdown menu for a listbox with single selection or a single 7996 * <select> element. 7997 * 7998 * @param array Labels for the listbox. 7999 * @param enabledArray State for each element in the list. See static 8000 * integers in Container class. 8001 * @param selection Which position is initally selected. 8002 */ 8003 void requestListBox(String[] array, int[] enabledArray, int selection) { 8004 mPrivateHandler.post( 8005 new InvokeListBox(array, enabledArray, selection)); 8006 } 8007 8008 // called by JNI 8009 private void sendMoveFocus(int frame, int node) { 8010 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 8011 new WebViewCore.CursorData(frame, node, 0, 0)); 8012 } 8013 8014 // called by JNI 8015 private void sendMoveMouse(int frame, int node, int x, int y) { 8016 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 8017 new WebViewCore.CursorData(frame, node, x, y)); 8018 } 8019 8020 /* 8021 * Send a mouse move event to the webcore thread. 8022 * 8023 * @param removeFocus Pass true if the "mouse" cursor is now over a node 8024 * which wants key events, but it is not the focus. This 8025 * will make the visual appear as though nothing is in 8026 * focus. Remove the WebTextView, if present, and stop 8027 * drawing the blinking caret. 8028 * called by JNI 8029 */ 8030 private void sendMoveMouseIfLatest(boolean removeFocus) { 8031 if (removeFocus) { 8032 clearTextEntry(); 8033 } 8034 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 8035 cursorData()); 8036 } 8037 8038 /** 8039 * Called by JNI to send a message to the webcore thread that the user 8040 * touched the webpage. 8041 * @param touchGeneration Generation number of the touch, to ignore touches 8042 * after a new one has been generated. 8043 * @param frame Pointer to the frame holding the node that was touched. 8044 * @param node Pointer to the node touched. 8045 * @param x x-position of the touch. 8046 * @param y y-position of the touch. 8047 */ 8048 private void sendMotionUp(int touchGeneration, 8049 int frame, int node, int x, int y) { 8050 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 8051 touchUpData.mMoveGeneration = touchGeneration; 8052 touchUpData.mFrame = frame; 8053 touchUpData.mNode = node; 8054 touchUpData.mX = x; 8055 touchUpData.mY = y; 8056 touchUpData.mNativeLayer = nativeScrollableLayer( 8057 x, y, touchUpData.mNativeLayerRect, null); 8058 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 8059 } 8060 8061 8062 private int getScaledMaxXScroll() { 8063 int width; 8064 if (mHeightCanMeasure == false) { 8065 width = getViewWidth() / 4; 8066 } else { 8067 Rect visRect = new Rect(); 8068 calcOurVisibleRect(visRect); 8069 width = visRect.width() / 2; 8070 } 8071 // FIXME the divisor should be retrieved from somewhere 8072 return viewToContentX(width); 8073 } 8074 8075 private int getScaledMaxYScroll() { 8076 int height; 8077 if (mHeightCanMeasure == false) { 8078 height = getViewHeight() / 4; 8079 } else { 8080 Rect visRect = new Rect(); 8081 calcOurVisibleRect(visRect); 8082 height = visRect.height() / 2; 8083 } 8084 // FIXME the divisor should be retrieved from somewhere 8085 // the closest thing today is hard-coded into ScrollView.java 8086 // (from ScrollView.java, line 363) int maxJump = height/2; 8087 return Math.round(height * mZoomManager.getInvScale()); 8088 } 8089 8090 /** 8091 * Called by JNI to invalidate view 8092 */ 8093 private void viewInvalidate() { 8094 invalidate(); 8095 } 8096 8097 /** 8098 * Pass the key directly to the page. This assumes that 8099 * nativePageShouldHandleShiftAndArrows() returned true. 8100 */ 8101 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 8102 int keyEventAction; 8103 int eventHubAction; 8104 if (down) { 8105 keyEventAction = KeyEvent.ACTION_DOWN; 8106 eventHubAction = EventHub.KEY_DOWN; 8107 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 8108 } else { 8109 keyEventAction = KeyEvent.ACTION_UP; 8110 eventHubAction = EventHub.KEY_UP; 8111 } 8112 8113 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 8114 1, (metaState & KeyEvent.META_SHIFT_ON) 8115 | (metaState & KeyEvent.META_ALT_ON) 8116 | (metaState & KeyEvent.META_SYM_ON) 8117 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 8118 mWebViewCore.sendMessage(eventHubAction, event); 8119 } 8120 8121 // return true if the key was handled 8122 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 8123 long time) { 8124 if (mNativeClass == 0) { 8125 return false; 8126 } 8127 mInitialHitTestResult = null; 8128 mLastCursorTime = time; 8129 mLastCursorBounds = nativeGetCursorRingBounds(); 8130 boolean keyHandled 8131 = nativeMoveCursor(keyCode, count, noScroll) == false; 8132 if (DebugFlags.WEB_VIEW) { 8133 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 8134 + " mLastCursorTime=" + mLastCursorTime 8135 + " handled=" + keyHandled); 8136 } 8137 if (keyHandled == false) { 8138 return keyHandled; 8139 } 8140 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 8141 if (contentCursorRingBounds.isEmpty()) return keyHandled; 8142 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 8143 // set last touch so that context menu related functions will work 8144 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 8145 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 8146 if (mHeightCanMeasure == false) { 8147 return keyHandled; 8148 } 8149 Rect visRect = new Rect(); 8150 calcOurVisibleRect(visRect); 8151 Rect outset = new Rect(visRect); 8152 int maxXScroll = visRect.width() / 2; 8153 int maxYScroll = visRect.height() / 2; 8154 outset.inset(-maxXScroll, -maxYScroll); 8155 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 8156 return keyHandled; 8157 } 8158 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 8159 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 8160 maxXScroll); 8161 if (maxH > 0) { 8162 pinScrollBy(maxH, 0, true, 0); 8163 } else { 8164 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 8165 -maxXScroll); 8166 if (maxH < 0) { 8167 pinScrollBy(maxH, 0, true, 0); 8168 } 8169 } 8170 if (mLastCursorBounds.isEmpty()) return keyHandled; 8171 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 8172 return keyHandled; 8173 } 8174 if (DebugFlags.WEB_VIEW) { 8175 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 8176 + contentCursorRingBounds); 8177 } 8178 requestRectangleOnScreen(viewCursorRingBounds); 8179 return keyHandled; 8180 } 8181 8182 /** 8183 * @return Whether accessibility script has been injected. 8184 */ 8185 private boolean accessibilityScriptInjected() { 8186 // TODO: Maybe the injected script should announce its presence in 8187 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 8188 // will check that as one of the conditions it looks for 8189 return mAccessibilityScriptInjected; 8190 } 8191 8192 /** 8193 * Set the background color. It's white by default. Pass 8194 * zero to make the view transparent. 8195 * @param color the ARGB color described by Color.java 8196 */ 8197 public void setBackgroundColor(int color) { 8198 mBackgroundColor = color; 8199 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 8200 } 8201 8202 public void debugDump() { 8203 nativeDebugDump(); 8204 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 8205 } 8206 8207 /** 8208 * Draw the HTML page into the specified canvas. This call ignores any 8209 * view-specific zoom, scroll offset, or other changes. It does not draw 8210 * any view-specific chrome, such as progress or URL bars. 8211 * 8212 * @hide only needs to be accessible to Browser and testing 8213 */ 8214 public void drawPage(Canvas canvas) { 8215 nativeDraw(canvas, 0, 0, false); 8216 } 8217 8218 /** 8219 * Enable expanded tiles bound for smoother scrolling. 8220 * 8221 * @hide only used by the Browser 8222 */ 8223 public void setExpandedTileBounds(boolean enabled) { 8224 nativeSetExpandedTileBounds(enabled); 8225 } 8226 8227 /** 8228 * Set the time to wait between passing touches to WebCore. See also the 8229 * TOUCH_SENT_INTERVAL member for further discussion. 8230 * 8231 * @hide This is only used by the DRT test application. 8232 */ 8233 public void setTouchInterval(int interval) { 8234 mCurrentTouchInterval = interval; 8235 } 8236 8237 /** 8238 * Update our cache with updatedText. 8239 * @param updatedText The new text to put in our cache. 8240 */ 8241 /* package */ void updateCachedTextfield(String updatedText) { 8242 // Also place our generation number so that when we look at the cache 8243 // we recognize that it is up to date. 8244 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 8245 } 8246 8247 /*package*/ void autoFillForm(int autoFillQueryId) { 8248 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 8249 } 8250 8251 /* package */ ViewManager getViewManager() { 8252 return mViewManager; 8253 } 8254 8255 private native int nativeCacheHitFramePointer(); 8256 private native boolean nativeCacheHitIsPlugin(); 8257 private native Rect nativeCacheHitNodeBounds(); 8258 private native int nativeCacheHitNodePointer(); 8259 /* package */ native void nativeClearCursor(); 8260 private native void nativeCreate(int ptr); 8261 private native int nativeCursorFramePointer(); 8262 private native Rect nativeCursorNodeBounds(); 8263 private native int nativeCursorNodePointer(); 8264 private native boolean nativeCursorIntersects(Rect visibleRect); 8265 private native boolean nativeCursorIsAnchor(); 8266 private native boolean nativeCursorIsTextInput(); 8267 private native Point nativeCursorPosition(); 8268 private native String nativeCursorText(); 8269 /** 8270 * Returns true if the native cursor node says it wants to handle key events 8271 * (ala plugins). This can only be called if mNativeClass is non-zero! 8272 */ 8273 private native boolean nativeCursorWantsKeyEvents(); 8274 private native void nativeDebugDump(); 8275 private native void nativeDestroy(); 8276 8277 /** 8278 * Draw the picture set with a background color and extra. If 8279 * "splitIfNeeded" is true and the return value is not 0, the return value 8280 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 8281 * native allocation can be freed. 8282 */ 8283 private native int nativeDraw(Canvas canvas, int color, int extra, 8284 boolean splitIfNeeded); 8285 private native void nativeDumpDisplayTree(String urlOrNull); 8286 private native boolean nativeEvaluateLayersAnimations(); 8287 private native int nativeGetDrawGLFunction(Rect rect, float scale, int extras); 8288 private native void nativeUpdateDrawGLFunction(Rect rect); 8289 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 8290 private native void nativeExtendSelection(int x, int y); 8291 private native int nativeFindAll(String findLower, String findUpper, 8292 boolean sameAsLastSearch); 8293 private native void nativeFindNext(boolean forward); 8294 /* package */ native int nativeFocusCandidateFramePointer(); 8295 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 8296 /* package */ native boolean nativeFocusCandidateIsPassword(); 8297 private native boolean nativeFocusCandidateIsRtlText(); 8298 private native boolean nativeFocusCandidateIsTextInput(); 8299 /* package */ native int nativeFocusCandidateMaxLength(); 8300 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 8301 /* package */ native String nativeFocusCandidateName(); 8302 private native Rect nativeFocusCandidateNodeBounds(); 8303 /** 8304 * @return A Rect with left, top, right, bottom set to the corresponding 8305 * padding values in the focus candidate, if it is a textfield/textarea with 8306 * a style. Otherwise return null. This is not actually a rectangle; Rect 8307 * is being used to pass four integers. 8308 */ 8309 private native Rect nativeFocusCandidatePaddingRect(); 8310 /* package */ native int nativeFocusCandidatePointer(); 8311 private native String nativeFocusCandidateText(); 8312 /* package */ native float nativeFocusCandidateTextSize(); 8313 /* package */ native int nativeFocusCandidateLineHeight(); 8314 /** 8315 * Returns an integer corresponding to WebView.cpp::type. 8316 * See WebTextView.setType() 8317 */ 8318 private native int nativeFocusCandidateType(); 8319 private native boolean nativeFocusIsPlugin(); 8320 private native Rect nativeFocusNodeBounds(); 8321 /* package */ native int nativeFocusNodePointer(); 8322 private native Rect nativeGetCursorRingBounds(); 8323 private native String nativeGetSelection(); 8324 private native boolean nativeHasCursorNode(); 8325 private native boolean nativeHasFocusNode(); 8326 private native void nativeHideCursor(); 8327 private native boolean nativeHitSelection(int x, int y); 8328 private native String nativeImageURI(int x, int y); 8329 private native void nativeInstrumentReport(); 8330 private native Rect nativeLayerBounds(int layer); 8331 /* package */ native boolean nativeMoveCursorToNextTextInput(); 8332 // return true if the page has been scrolled 8333 private native boolean nativeMotionUp(int x, int y, int slop); 8334 // returns false if it handled the key 8335 private native boolean nativeMoveCursor(int keyCode, int count, 8336 boolean noScroll); 8337 private native int nativeMoveGeneration(); 8338 private native void nativeMoveSelection(int x, int y); 8339 /** 8340 * @return true if the page should get the shift and arrow keys, rather 8341 * than select text/navigation. 8342 * 8343 * If the focus is a plugin, or if the focus and cursor match and are 8344 * a contentEditable element, then the page should handle these keys. 8345 */ 8346 private native boolean nativePageShouldHandleShiftAndArrows(); 8347 private native boolean nativePointInNavCache(int x, int y, int slop); 8348 // Like many other of our native methods, you must make sure that 8349 // mNativeClass is not null before calling this method. 8350 private native void nativeRecordButtons(boolean focused, 8351 boolean pressed, boolean invalidate); 8352 private native void nativeResetSelection(); 8353 private native Point nativeSelectableText(); 8354 private native void nativeSelectAll(); 8355 private native void nativeSelectBestAt(Rect rect); 8356 private native void nativeSelectAt(int x, int y); 8357 private native int nativeSelectionX(); 8358 private native int nativeSelectionY(); 8359 private native int nativeFindIndex(); 8360 private native void nativeSetExtendSelection(); 8361 private native void nativeSetFindIsEmpty(); 8362 private native void nativeSetFindIsUp(boolean isUp); 8363 private native void nativeSetHeightCanMeasure(boolean measure); 8364 private native void nativeSetBaseLayer(int layer, Rect invalRect, 8365 boolean showVisualIndciator); 8366 private native void nativeShowCursorTimed(); 8367 private native void nativeReplaceBaseContent(int content); 8368 private native void nativeCopyBaseContentToPicture(Picture pict); 8369 private native boolean nativeHasContent(); 8370 private native void nativeSetSelectionPointer(boolean set, 8371 float scale, int x, int y); 8372 private native boolean nativeStartSelection(int x, int y); 8373 private native void nativeStopGL(); 8374 private native Rect nativeSubtractLayers(Rect content); 8375 private native int nativeTextGeneration(); 8376 // Never call this version except by updateCachedTextfield(String) - 8377 // we always want to pass in our generation number. 8378 private native void nativeUpdateCachedTextfield(String updatedText, 8379 int generation); 8380 private native boolean nativeWordSelection(int x, int y); 8381 // return NO_LEFTEDGE means failure. 8382 static final int NO_LEFTEDGE = -1; 8383 native int nativeGetBlockLeftEdge(int x, int y, float scale); 8384 8385 private native void nativeSetExpandedTileBounds(boolean enabled); 8386 8387 // Returns a pointer to the scrollable LayerAndroid at the given point. 8388 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 8389 Rect scrollBounds); 8390 /** 8391 * Scroll the specified layer. 8392 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 8393 * @param newX Destination x position to which to scroll. 8394 * @param newY Destination y position to which to scroll. 8395 * @return True if the layer is successfully scrolled. 8396 */ 8397 private native boolean nativeScrollLayer(int layer, int newX, int newY); 8398} 8399