WebView.java revision 861368a307cb1763b567ba90e418b1523359ee71
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 com.android.internal.R; 20 21import android.annotation.Widget; 22import android.app.AlertDialog; 23import android.content.BroadcastReceiver; 24import android.content.ClipboardManager; 25import android.content.Context; 26import android.content.DialogInterface; 27import android.content.DialogInterface.OnCancelListener; 28import android.content.Intent; 29import android.content.IntentFilter; 30import android.content.pm.PackageInfo; 31import android.content.pm.PackageManager; 32import android.content.res.Configuration; 33import android.content.res.Resources; 34import android.database.DataSetObserver; 35import android.graphics.Bitmap; 36import android.graphics.BitmapFactory; 37import android.graphics.BitmapShader; 38import android.graphics.Canvas; 39import android.graphics.Color; 40import android.graphics.CornerPathEffect; 41import android.graphics.DrawFilter; 42import android.graphics.Paint; 43import android.graphics.PaintFlagsDrawFilter; 44import android.graphics.Picture; 45import android.graphics.Point; 46import android.graphics.Rect; 47import android.graphics.RectF; 48import android.graphics.Region; 49import android.graphics.Shader; 50import android.graphics.drawable.Drawable; 51import android.net.Uri; 52import android.net.http.SslCertificate; 53import android.os.AsyncTask; 54import android.os.Bundle; 55import android.os.Handler; 56import android.os.Message; 57import android.provider.Settings; 58import android.speech.tts.TextToSpeech; 59import android.text.Selection; 60import android.text.Spannable; 61import android.util.AttributeSet; 62import android.util.EventLog; 63import android.util.Log; 64import android.view.Gravity; 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.EdgeGlow; 92import android.widget.LinearLayout; 93import android.widget.ListView; 94import android.widget.OverScroller; 95import android.widget.Toast; 96 97import java.io.File; 98import java.io.FileInputStream; 99import java.io.FileNotFoundException; 100import java.io.FileOutputStream; 101import java.net.URLDecoder; 102import java.util.ArrayList; 103import java.util.HashMap; 104import java.util.HashSet; 105import java.util.List; 106import java.util.Map; 107import java.util.Set; 108import java.util.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; 354 355 /** 356 * Transportation object for returning WebView across thread boundaries. 357 */ 358 public class WebViewTransport { 359 private WebView mWebview; 360 361 /** 362 * Set the WebView to the transportation object. 363 * @param webview The WebView to transport. 364 */ 365 public synchronized void setWebView(WebView webview) { 366 mWebview = webview; 367 } 368 369 /** 370 * Return the WebView object. 371 * @return WebView The transported WebView object. 372 */ 373 public synchronized WebView getWebView() { 374 return mWebview; 375 } 376 } 377 378 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 379 private final CallbackProxy mCallbackProxy; 380 381 private final WebViewDatabase mDatabase; 382 383 // SSL certificate for the main top-level page (if secure) 384 private SslCertificate mCertificate; 385 386 // Native WebView pointer that is 0 until the native object has been 387 // created. 388 private int mNativeClass; 389 // This would be final but it needs to be set to null when the WebView is 390 // destroyed. 391 private WebViewCore mWebViewCore; 392 // Handler for dispatching UI messages. 393 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 394 private WebTextView mWebTextView; 395 // Used to ignore changes to webkit text that arrives to the UI side after 396 // more key events. 397 private int mTextGeneration; 398 399 /* package */ void incrementTextGeneration() { mTextGeneration++; } 400 401 // Used by WebViewCore to create child views. 402 /* package */ final ViewManager mViewManager; 403 404 // Used to display in full screen mode 405 PluginFullScreenHolder mFullScreenHolder; 406 407 /** 408 * Position of the last touch event. 409 */ 410 private float mLastTouchX; 411 private float mLastTouchY; 412 413 /** 414 * Time of the last touch event. 415 */ 416 private long mLastTouchTime; 417 418 /** 419 * Time of the last time sending touch event to WebViewCore 420 */ 421 private long mLastSentTouchTime; 422 423 /** 424 * The minimum elapsed time before sending another ACTION_MOVE event to 425 * WebViewCore. This really should be tuned for each type of the devices. 426 * For example in Google Map api test case, it takes Dream device at least 427 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 428 * triggering the layout and drawing the picture. While the same process 429 * takes 60+ms on the current high speed device. If we make 430 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 431 * to WebViewCore queue and the real layout and draw events will be pushed 432 * to further, which slows down the refresh rate. Choose 50 to favor the 433 * current high speed devices. For Dream like devices, 100 is a better 434 * choice. Maybe make this in the buildspec later. 435 */ 436 private static final int TOUCH_SENT_INTERVAL = 50; 437 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 438 439 /** 440 * Helper class to get velocity for fling 441 */ 442 VelocityTracker mVelocityTracker; 443 private int mMaximumFling; 444 private float mLastVelocity; 445 private float mLastVelX; 446 private float mLastVelY; 447 448 // The id of the native layer being scrolled. 449 private int mScrollingLayer; 450 private Rect mScrollingLayerRect = new Rect(); 451 452 // only trigger accelerated fling if the new velocity is at least 453 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 454 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 455 456 /** 457 * Touch mode 458 */ 459 private int mTouchMode = TOUCH_DONE_MODE; 460 private static final int TOUCH_INIT_MODE = 1; 461 private static final int TOUCH_DRAG_START_MODE = 2; 462 private static final int TOUCH_DRAG_MODE = 3; 463 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 464 private static final int TOUCH_SHORTPRESS_MODE = 5; 465 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 466 private static final int TOUCH_DONE_MODE = 7; 467 private static final int TOUCH_PINCH_DRAG = 8; 468 private static final int TOUCH_DRAG_LAYER_MODE = 9; 469 470 // Whether to forward the touch events to WebCore 471 private boolean mForwardTouchEvents = false; 472 473 // Whether to prevent default during touch. The initial value depends on 474 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 475 // for touch down. Otherwise UI will wait for the answer of the first 476 // confirmed move before taking over the control. 477 private static final int PREVENT_DEFAULT_NO = 0; 478 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 479 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 480 private static final int PREVENT_DEFAULT_YES = 3; 481 private static final int PREVENT_DEFAULT_IGNORE = 4; 482 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 483 484 // true when the touch movement exceeds the slop 485 private boolean mConfirmMove; 486 487 // if true, touch events will be first processed by WebCore, if prevent 488 // default is not set, the UI will continue handle them. 489 private boolean mDeferTouchProcess; 490 491 // if true, multi-touch events will be passed to webkit directly before UI 492 private boolean mDeferMultitouch = false; 493 494 // to avoid interfering with the current touch events, track them 495 // separately. Currently no snapping or fling in the deferred process mode 496 private int mDeferTouchMode = TOUCH_DONE_MODE; 497 private float mLastDeferTouchX; 498 private float mLastDeferTouchY; 499 500 // To keep track of whether the current drag was initiated by a WebTextView, 501 // so that we know not to hide the cursor 502 boolean mDragFromTextInput; 503 504 // Whether or not to draw the cursor ring. 505 private boolean mDrawCursorRing = true; 506 507 // true if onPause has been called (and not onResume) 508 private boolean mIsPaused; 509 510 private HitTestResult mInitialHitTestResult; 511 512 /** 513 * Customizable constant 514 */ 515 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 516 private int mTouchSlopSquare; 517 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 518 private int mDoubleTapSlopSquare; 519 // pre-computed density adjusted navigation slop 520 private int mNavSlop; 521 // This should be ViewConfiguration.getTapTimeout() 522 // But system time out is 100ms, which is too short for the browser. 523 // In the browser, if it switches out of tap too soon, jump tap won't work. 524 private static final int TAP_TIMEOUT = 200; 525 // This should be ViewConfiguration.getLongPressTimeout() 526 // But system time out is 500ms, which is too short for the browser. 527 // With a short timeout, it's difficult to treat trigger a short press. 528 private static final int LONG_PRESS_TIMEOUT = 1000; 529 // needed to avoid flinging after a pause of no movement 530 private static final int MIN_FLING_TIME = 250; 531 // draw unfiltered after drag is held without movement 532 private static final int MOTIONLESS_TIME = 100; 533 // The amount of content to overlap between two screens when going through 534 // pages with the space bar, in pixels. 535 private static final int PAGE_SCROLL_OVERLAP = 24; 536 537 /** 538 * These prevent calling requestLayout if either dimension is fixed. This 539 * depends on the layout parameters and the measure specs. 540 */ 541 boolean mWidthCanMeasure; 542 boolean mHeightCanMeasure; 543 544 // Remember the last dimensions we sent to the native side so we can avoid 545 // sending the same dimensions more than once. 546 int mLastWidthSent; 547 int mLastHeightSent; 548 549 private int mContentWidth; // cache of value from WebViewCore 550 private int mContentHeight; // cache of value from WebViewCore 551 552 // Need to have the separate control for horizontal and vertical scrollbar 553 // style than the View's single scrollbar style 554 private boolean mOverlayHorizontalScrollbar = true; 555 private boolean mOverlayVerticalScrollbar = false; 556 557 // our standard speed. this way small distances will be traversed in less 558 // time than large distances, but we cap the duration, so that very large 559 // distances won't take too long to get there. 560 private static final int STD_SPEED = 480; // pixels per second 561 // time for the longest scroll animation 562 private static final int MAX_DURATION = 750; // milliseconds 563 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 564 565 // Used by OverScrollGlow 566 OverScroller mScroller; 567 568 private boolean mInOverScrollMode = false; 569 private static Paint mOverScrollBackground; 570 private static Paint mOverScrollBorder; 571 572 private boolean mWrapContent; 573 private static final int MOTIONLESS_FALSE = 0; 574 private static final int MOTIONLESS_PENDING = 1; 575 private static final int MOTIONLESS_TRUE = 2; 576 private static final int MOTIONLESS_IGNORE = 3; 577 private int mHeldMotionless; 578 579 // An instance for injecting accessibility in WebViews with disabled 580 // JavaScript or ones for which no accessibility script exists 581 private AccessibilityInjector mAccessibilityInjector; 582 583 // flag indicating if accessibility script is injected so we 584 // know to handle Shift and arrows natively first 585 private boolean mAccessibilityScriptInjected; 586 587 // the color used to highlight the touch rectangles 588 private static final int mHightlightColor = 0x33000000; 589 // the round corner for the highlight path 590 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 591 // the region indicating where the user touched on the screen 592 private Region mTouchHighlightRegion = new Region(); 593 // the paint for the touch highlight 594 private Paint mTouchHightlightPaint; 595 // debug only 596 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 597 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 598 private Paint mTouchCrossHairColor; 599 private int mTouchHighlightX; 600 private int mTouchHighlightY; 601 602 /* 603 * Private message ids 604 */ 605 private static final int REMEMBER_PASSWORD = 1; 606 private static final int NEVER_REMEMBER_PASSWORD = 2; 607 private static final int SWITCH_TO_SHORTPRESS = 3; 608 private static final int SWITCH_TO_LONGPRESS = 4; 609 private static final int RELEASE_SINGLE_TAP = 5; 610 private static final int REQUEST_FORM_DATA = 6; 611 private static final int RESUME_WEBCORE_PRIORITY = 7; 612 private static final int DRAG_HELD_MOTIONLESS = 8; 613 private static final int AWAKEN_SCROLL_BARS = 9; 614 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 615 private static final int SCROLL_SELECT_TEXT = 11; 616 617 618 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 619 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 620 621 /* 622 * Package message ids 623 */ 624 //! arg1=x, arg2=y 625 static final int SCROLL_TO_MSG_ID = 101; 626 static final int SCROLL_BY_MSG_ID = 102; 627 //! arg1=x, arg2=y 628 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 629 //! arg1=x, arg2=y 630 static final int SYNC_SCROLL_TO_MSG_ID = 104; 631 static final int NEW_PICTURE_MSG_ID = 105; 632 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 633 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 634 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 635 static final int UPDATE_ZOOM_RANGE = 109; 636 static final int UNHANDLED_NAV_KEY = 110; 637 static final int CLEAR_TEXT_ENTRY = 111; 638 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 639 static final int SHOW_RECT_MSG_ID = 113; 640 static final int LONG_PRESS_CENTER = 114; 641 static final int PREVENT_TOUCH_ID = 115; 642 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 643 // obj=Rect in doc coordinates 644 static final int INVAL_RECT_MSG_ID = 117; 645 static final int REQUEST_KEYBOARD = 118; 646 static final int DO_MOTION_UP = 119; 647 static final int SHOW_FULLSCREEN = 120; 648 static final int HIDE_FULLSCREEN = 121; 649 static final int DOM_FOCUS_CHANGED = 122; 650 static final int REPLACE_BASE_CONTENT = 123; 651 static final int FORM_DID_BLUR = 124; 652 static final int RETURN_LABEL = 125; 653 static final int FIND_AGAIN = 126; 654 static final int CENTER_FIT_RECT = 127; 655 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 656 static final int SET_SCROLLBAR_MODES = 129; 657 static final int SELECTION_STRING_CHANGED = 130; 658 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 659 static final int SAVE_WEBARCHIVE_FINISHED = 132; 660 661 static final int SET_AUTOFILLABLE = 133; 662 static final int AUTOFILL_COMPLETE = 134; 663 664 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 665 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 666 667 static final String[] HandlerPrivateDebugString = { 668 "REMEMBER_PASSWORD", // = 1; 669 "NEVER_REMEMBER_PASSWORD", // = 2; 670 "SWITCH_TO_SHORTPRESS", // = 3; 671 "SWITCH_TO_LONGPRESS", // = 4; 672 "RELEASE_SINGLE_TAP", // = 5; 673 "REQUEST_FORM_DATA", // = 6; 674 "RESUME_WEBCORE_PRIORITY", // = 7; 675 "DRAG_HELD_MOTIONLESS", // = 8; 676 "AWAKEN_SCROLL_BARS", // = 9; 677 "PREVENT_DEFAULT_TIMEOUT", // = 10; 678 "SCROLL_SELECT_TEXT" // = 11; 679 }; 680 681 static final String[] HandlerPackageDebugString = { 682 "SCROLL_TO_MSG_ID", // = 101; 683 "SCROLL_BY_MSG_ID", // = 102; 684 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 685 "SYNC_SCROLL_TO_MSG_ID", // = 104; 686 "NEW_PICTURE_MSG_ID", // = 105; 687 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 688 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 689 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 690 "UPDATE_ZOOM_RANGE", // = 109; 691 "UNHANDLED_NAV_KEY", // = 110; 692 "CLEAR_TEXT_ENTRY", // = 111; 693 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 694 "SHOW_RECT_MSG_ID", // = 113; 695 "LONG_PRESS_CENTER", // = 114; 696 "PREVENT_TOUCH_ID", // = 115; 697 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 698 "INVAL_RECT_MSG_ID", // = 117; 699 "REQUEST_KEYBOARD", // = 118; 700 "DO_MOTION_UP", // = 119; 701 "SHOW_FULLSCREEN", // = 120; 702 "HIDE_FULLSCREEN", // = 121; 703 "DOM_FOCUS_CHANGED", // = 122; 704 "REPLACE_BASE_CONTENT", // = 123; 705 "FORM_DID_BLUR", // = 124; 706 "RETURN_LABEL", // = 125; 707 "FIND_AGAIN", // = 126; 708 "CENTER_FIT_RECT", // = 127; 709 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 710 "SET_SCROLLBAR_MODES", // = 129; 711 "SELECTION_STRING_CHANGED", // = 130; 712 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 713 "SAVE_WEBARCHIVE_FINISHED", // = 132; 714 "SET_AUTOFILLABLE", // = 133; 715 "AUTOFILL_COMPLETE" // = 134; 716 }; 717 718 // If the site doesn't use the viewport meta tag to specify the viewport, 719 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 720 static final int DEFAULT_VIEWPORT_WIDTH = 980; 721 722 // normally we try to fit the content to the minimum preferred width 723 // calculated by the Webkit. To avoid the bad behavior when some site's 724 // minimum preferred width keeps growing when changing the viewport width or 725 // the minimum preferred width is huge, an upper limit is needed. 726 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 727 728 // initial scale in percent. 0 means using default. 729 private int mInitialScaleInPercent = 0; 730 731 private boolean mUserScroll = false; 732 733 private int mSnapScrollMode = SNAP_NONE; 734 private static final int SNAP_NONE = 0; 735 private static final int SNAP_LOCK = 1; // not a separate state 736 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 737 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 738 private boolean mSnapPositive; 739 740 // keep these in sync with their counterparts in WebView.cpp 741 private static final int DRAW_EXTRAS_NONE = 0; 742 private static final int DRAW_EXTRAS_FIND = 1; 743 private static final int DRAW_EXTRAS_SELECTION = 2; 744 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 745 746 // keep this in sync with WebCore:ScrollbarMode in WebKit 747 private static final int SCROLLBAR_AUTO = 0; 748 private static final int SCROLLBAR_ALWAYSOFF = 1; 749 // as we auto fade scrollbar, this is ignored. 750 private static final int SCROLLBAR_ALWAYSON = 2; 751 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 752 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 753 754 // constants for determining script injection strategy 755 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 756 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 757 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 758 759 // the alias via which accessibility JavaScript interface is exposed 760 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 761 762 // JavaScript to inject the script chooser which will 763 // pick the right script for the current URL 764 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 765 "javascript:(function() {" + 766 " var chooser = document.createElement('script');" + 767 " chooser.type = 'text/javascript';" + 768 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 769 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 770 " })();"; 771 772 // Regular expression that matches the "axs" URL parameter. 773 // The value of 0 means the accessibility script is opted out 774 // The value of 1 means the accessibility script is already injected 775 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 776 777 // variable to cache the above pattern in case accessibility is enabled. 778 private Pattern mMatchAxsUrlParameterPattern; 779 780 /** 781 * Max distance to overscroll by in pixels. 782 * This how far content can be pulled beyond its normal bounds by the user. 783 */ 784 private int mOverscrollDistance; 785 786 /** 787 * Max distance to overfling by in pixels. 788 * This is how far flinged content can move beyond the end of its normal bounds. 789 */ 790 private int mOverflingDistance; 791 792 private OverScrollGlow mOverScrollGlow; 793 794 // Used to match key downs and key ups 795 private boolean mGotKeyDown; 796 797 /* package */ static boolean mLogEvent = true; 798 799 // for event log 800 private long mLastTouchUpTime = 0; 801 802 private WebViewCore.AutoFillData mAutoFillData; 803 804 /** 805 * URI scheme for telephone number 806 */ 807 public static final String SCHEME_TEL = "tel:"; 808 /** 809 * URI scheme for email address 810 */ 811 public static final String SCHEME_MAILTO = "mailto:"; 812 /** 813 * URI scheme for map address 814 */ 815 public static final String SCHEME_GEO = "geo:0,0?q="; 816 817 private int mBackgroundColor = Color.WHITE; 818 819 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 820 private int mAutoScrollX = 0; 821 private int mAutoScrollY = 0; 822 private boolean mSentAutoScrollMessage = false; 823 824 // Used to notify listeners of a new picture. 825 private PictureListener mPictureListener; 826 /** 827 * Interface to listen for new pictures as they change. 828 */ 829 public interface PictureListener { 830 /** 831 * Notify the listener that the picture has changed. 832 * @param view The WebView that owns the picture. 833 * @param picture The new picture. 834 */ 835 public void onNewPicture(WebView view, Picture picture); 836 } 837 838 // FIXME: Want to make this public, but need to change the API file. 839 public /*static*/ class HitTestResult { 840 /** 841 * Default HitTestResult, where the target is unknown 842 */ 843 public static final int UNKNOWN_TYPE = 0; 844 /** 845 * HitTestResult for hitting a HTML::a tag 846 */ 847 public static final int ANCHOR_TYPE = 1; 848 /** 849 * HitTestResult for hitting a phone number 850 */ 851 public static final int PHONE_TYPE = 2; 852 /** 853 * HitTestResult for hitting a map address 854 */ 855 public static final int GEO_TYPE = 3; 856 /** 857 * HitTestResult for hitting an email address 858 */ 859 public static final int EMAIL_TYPE = 4; 860 /** 861 * HitTestResult for hitting an HTML::img tag 862 */ 863 public static final int IMAGE_TYPE = 5; 864 /** 865 * HitTestResult for hitting a HTML::a tag which contains HTML::img 866 */ 867 public static final int IMAGE_ANCHOR_TYPE = 6; 868 /** 869 * HitTestResult for hitting a HTML::a tag with src=http 870 */ 871 public static final int SRC_ANCHOR_TYPE = 7; 872 /** 873 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 874 */ 875 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 876 /** 877 * HitTestResult for hitting an edit text area 878 */ 879 public static final int EDIT_TEXT_TYPE = 9; 880 881 private int mType; 882 private String mExtra; 883 884 HitTestResult() { 885 mType = UNKNOWN_TYPE; 886 } 887 888 private void setType(int type) { 889 mType = type; 890 } 891 892 private void setExtra(String extra) { 893 mExtra = extra; 894 } 895 896 public int getType() { 897 return mType; 898 } 899 900 public String getExtra() { 901 return mExtra; 902 } 903 } 904 905 /** 906 * Construct a new WebView with a Context object. 907 * @param context A Context object used to access application assets. 908 */ 909 public WebView(Context context) { 910 this(context, null); 911 } 912 913 /** 914 * Construct a new WebView with layout parameters. 915 * @param context A Context object used to access application assets. 916 * @param attrs An AttributeSet passed to our parent. 917 */ 918 public WebView(Context context, AttributeSet attrs) { 919 this(context, attrs, com.android.internal.R.attr.webViewStyle); 920 } 921 922 /** 923 * Construct a new WebView with layout parameters and a default style. 924 * @param context A Context object used to access application assets. 925 * @param attrs An AttributeSet passed to our parent. 926 * @param defStyle The default style resource ID. 927 */ 928 public WebView(Context context, AttributeSet attrs, int defStyle) { 929 this(context, attrs, defStyle, false); 930 } 931 932 /** 933 * Construct a new WebView with layout parameters and a default style. 934 * @param context A Context object used to access application assets. 935 * @param attrs An AttributeSet passed to our parent. 936 * @param defStyle The default style resource ID. 937 */ 938 public WebView(Context context, AttributeSet attrs, int defStyle, 939 boolean privateBrowsing) { 940 this(context, attrs, defStyle, null, privateBrowsing); 941 } 942 943 /** 944 * Construct a new WebView with layout parameters, a default style and a set 945 * of custom Javscript interfaces to be added to the WebView at initialization 946 * time. This guarantees that these interfaces will be available when the JS 947 * context is initialized. 948 * @param context A Context object used to access application assets. 949 * @param attrs An AttributeSet passed to our parent. 950 * @param defStyle The default style resource ID. 951 * @param javaScriptInterfaces is a Map of interface names, as keys, and 952 * object implementing those interfaces, as values. 953 * @hide pending API council approval. 954 */ 955 protected WebView(Context context, AttributeSet attrs, int defStyle, 956 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 957 super(context, attrs, defStyle); 958 959 // Used by the chrome stack to find application paths 960 JniUtil.setContext(context); 961 962 if (AccessibilityManager.getInstance(context).isEnabled()) { 963 if (javaScriptInterfaces == null) { 964 javaScriptInterfaces = new HashMap<String, Object>(); 965 } 966 exposeAccessibilityJavaScriptApi(javaScriptInterfaces); 967 } 968 969 mCallbackProxy = new CallbackProxy(context, this); 970 mViewManager = new ViewManager(this); 971 L10nUtils.loadStrings(context); 972 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 973 mDatabase = WebViewDatabase.getInstance(context); 974 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 975 mZoomManager = new ZoomManager(this, mCallbackProxy); 976 977 /* The init method must follow the creation of certain member variables, 978 * such as the mZoomManager. 979 */ 980 init(); 981 setupPackageListener(context); 982 updateMultiTouchSupport(context); 983 984 if (privateBrowsing) { 985 startPrivateBrowsing(); 986 } 987 988 mAutoFillData = new WebViewCore.AutoFillData(); 989 } 990 991 /* 992 * The intent receiver that monitors for changes to relevant packages (e.g., 993 * sGoogleApps) and notifies WebViewCore of their existence. 994 */ 995 private static BroadcastReceiver sPackageInstallationReceiver = null; 996 997 /* 998 * A set of Google packages we monitor for the 999 * navigator.isApplicationInstalled() API. Add additional packages as 1000 * needed. 1001 */ 1002 private static Set<String> sGoogleApps; 1003 static { 1004 sGoogleApps = new HashSet<String>(); 1005 sGoogleApps.add("com.google.android.youtube"); 1006 } 1007 1008 private void setupPackageListener(Context context) { 1009 1010 /* 1011 * we must synchronize the instance check and the creation of the 1012 * receiver to ensure that only ONE receiver exists for all WebView 1013 * instances. 1014 */ 1015 synchronized (WebView.class) { 1016 1017 // if the receiver already exists then we do not need to register it 1018 // again 1019 if (sPackageInstallationReceiver != null) { 1020 return; 1021 } 1022 1023 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1024 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1025 filter.addDataScheme("package"); 1026 sPackageInstallationReceiver = new BroadcastReceiver() { 1027 1028 @Override 1029 public void onReceive(Context context, Intent intent) { 1030 final String action = intent.getAction(); 1031 final String packageName = intent.getData().getSchemeSpecificPart(); 1032 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1033 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1034 // if it is replacing, refreshPlugins() when adding 1035 return; 1036 } 1037 1038 if (sGoogleApps.contains(packageName) && mWebViewCore != null) { 1039 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1040 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1041 } else { 1042 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1043 } 1044 } 1045 1046 PluginManager pm = PluginManager.getInstance(context); 1047 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1048 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1049 } 1050 } 1051 }; 1052 1053 context.getApplicationContext().registerReceiver(sPackageInstallationReceiver, filter); 1054 } 1055 1056 // check if any of the monitored apps are already installed 1057 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1058 1059 @Override 1060 protected Set<String> doInBackground(Void... unused) { 1061 Set<String> installedPackages = new HashSet<String>(); 1062 PackageManager pm = mContext.getPackageManager(); 1063 List<PackageInfo> packages = pm.getInstalledPackages(0); 1064 for (PackageInfo p : packages) { 1065 if (sGoogleApps.contains(p.packageName)) { 1066 installedPackages.add(p.packageName); 1067 } 1068 } 1069 return installedPackages; 1070 } 1071 1072 // Executes on the UI thread 1073 @Override 1074 protected void onPostExecute(Set<String> installedPackages) { 1075 if (mWebViewCore != null) { 1076 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1077 } 1078 } 1079 }; 1080 task.execute(); 1081 } 1082 1083 void updateMultiTouchSupport(Context context) { 1084 mZoomManager.updateMultiTouchSupport(context); 1085 } 1086 1087 private void init() { 1088 setWillNotDraw(false); 1089 setFocusable(true); 1090 setFocusableInTouchMode(true); 1091 setClickable(true); 1092 setLongClickable(true); 1093 1094 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1095 int slop = configuration.getScaledTouchSlop(); 1096 mTouchSlopSquare = slop * slop; 1097 mMinLockSnapReverseDistance = slop; 1098 slop = configuration.getScaledDoubleTapSlop(); 1099 mDoubleTapSlopSquare = slop * slop; 1100 final float density = getContext().getResources().getDisplayMetrics().density; 1101 // use one line height, 16 based on our current default font, for how 1102 // far we allow a touch be away from the edge of a link 1103 mNavSlop = (int) (16 * density); 1104 mZoomManager.init(density); 1105 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1106 1107 // Compute the inverse of the density squared. 1108 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1109 1110 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1111 mOverflingDistance = configuration.getScaledOverflingDistance(); 1112 } 1113 1114 /** 1115 * Exposes accessibility APIs to JavaScript by appending them to the JavaScript 1116 * interfaces map provided by the WebView client. In case of conflicting 1117 * alias with the one of the accessibility API the user specified one wins. 1118 * 1119 * @param javaScriptInterfaces A map with interfaces to be exposed to JavaScript. 1120 */ 1121 private void exposeAccessibilityJavaScriptApi(Map<String, Object> javaScriptInterfaces) { 1122 if (javaScriptInterfaces.containsKey(ALIAS_ACCESSIBILITY_JS_INTERFACE)) { 1123 Log.w(LOGTAG, "JavaScript interface mapped to \"" + ALIAS_ACCESSIBILITY_JS_INTERFACE 1124 + "\" overrides the accessibility API JavaScript interface. No accessibility" 1125 + "API will be exposed to JavaScript!"); 1126 return; 1127 } 1128 1129 // expose the TTS for now ... 1130 javaScriptInterfaces.put(ALIAS_ACCESSIBILITY_JS_INTERFACE, 1131 new TextToSpeech(getContext(), null)); 1132 } 1133 1134 @Override 1135 public void setOverScrollMode(int mode) { 1136 super.setOverScrollMode(mode); 1137 if (mode != OVER_SCROLL_NEVER) { 1138 if (mOverScrollGlow == null) { 1139 mOverScrollGlow = new OverScrollGlow(this); 1140 } 1141 } else { 1142 mOverScrollGlow = null; 1143 } 1144 } 1145 1146 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1147 final float density = mContext.getResources().getDisplayMetrics().density 1148 * 100 / zoomDensity; 1149 mNavSlop = (int) (16 * density); 1150 mZoomManager.updateDefaultZoomDensity(density); 1151 } 1152 1153 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1154 String password, final Message resumeMsg) { 1155 boolean rVal = false; 1156 if (resumeMsg == null) { 1157 // null resumeMsg implies saving password silently 1158 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1159 } else { 1160 final Message remember = mPrivateHandler.obtainMessage( 1161 REMEMBER_PASSWORD); 1162 remember.getData().putString("host", schemePlusHost); 1163 remember.getData().putString("username", username); 1164 remember.getData().putString("password", password); 1165 remember.obj = resumeMsg; 1166 1167 final Message neverRemember = mPrivateHandler.obtainMessage( 1168 NEVER_REMEMBER_PASSWORD); 1169 neverRemember.getData().putString("host", schemePlusHost); 1170 neverRemember.getData().putString("username", username); 1171 neverRemember.getData().putString("password", password); 1172 neverRemember.obj = resumeMsg; 1173 1174 new AlertDialog.Builder(getContext()) 1175 .setTitle(com.android.internal.R.string.save_password_label) 1176 .setMessage(com.android.internal.R.string.save_password_message) 1177 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1178 new DialogInterface.OnClickListener() { 1179 public void onClick(DialogInterface dialog, int which) { 1180 resumeMsg.sendToTarget(); 1181 } 1182 }) 1183 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1184 new DialogInterface.OnClickListener() { 1185 public void onClick(DialogInterface dialog, int which) { 1186 remember.sendToTarget(); 1187 } 1188 }) 1189 .setNegativeButton(com.android.internal.R.string.save_password_never, 1190 new DialogInterface.OnClickListener() { 1191 public void onClick(DialogInterface dialog, int which) { 1192 neverRemember.sendToTarget(); 1193 } 1194 }) 1195 .setOnCancelListener(new OnCancelListener() { 1196 public void onCancel(DialogInterface dialog) { 1197 resumeMsg.sendToTarget(); 1198 } 1199 }).show(); 1200 // Return true so that WebViewCore will pause while the dialog is 1201 // up. 1202 rVal = true; 1203 } 1204 return rVal; 1205 } 1206 1207 @Override 1208 public void setScrollBarStyle(int style) { 1209 if (style == View.SCROLLBARS_INSIDE_INSET 1210 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1211 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1212 } else { 1213 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1214 } 1215 super.setScrollBarStyle(style); 1216 } 1217 1218 /** 1219 * Specify whether the horizontal scrollbar has overlay style. 1220 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1221 */ 1222 public void setHorizontalScrollbarOverlay(boolean overlay) { 1223 mOverlayHorizontalScrollbar = overlay; 1224 } 1225 1226 /** 1227 * Specify whether the vertical scrollbar has overlay style. 1228 * @param overlay TRUE if vertical scrollbar should have overlay style. 1229 */ 1230 public void setVerticalScrollbarOverlay(boolean overlay) { 1231 mOverlayVerticalScrollbar = overlay; 1232 } 1233 1234 /** 1235 * Return whether horizontal scrollbar has overlay style 1236 * @return TRUE if horizontal scrollbar has overlay style. 1237 */ 1238 public boolean overlayHorizontalScrollbar() { 1239 return mOverlayHorizontalScrollbar; 1240 } 1241 1242 /** 1243 * Return whether vertical scrollbar has overlay style 1244 * @return TRUE if vertical scrollbar has overlay style. 1245 */ 1246 public boolean overlayVerticalScrollbar() { 1247 return mOverlayVerticalScrollbar; 1248 } 1249 1250 /* 1251 * Return the width of the view where the content of WebView should render 1252 * to. 1253 * Note: this can be called from WebCoreThread. 1254 */ 1255 /* package */ int getViewWidth() { 1256 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1257 return getWidth(); 1258 } else { 1259 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1260 } 1261 } 1262 1263 /* 1264 * returns the height of the titlebarview (if any). Does not care about 1265 * scrolling 1266 */ 1267 int getTitleHeight() { 1268 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1269 } 1270 1271 /* 1272 * Return the amount of the titlebarview (if any) that is visible 1273 * 1274 * @hide 1275 */ 1276 public int getVisibleTitleHeight() { 1277 // need to restrict mScrollY due to over scroll 1278 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1279 } 1280 1281 /* 1282 * Return the height of the view where the content of WebView should render 1283 * to. Note that this excludes mTitleBar, if there is one. 1284 * Note: this can be called from WebCoreThread. 1285 */ 1286 /* package */ int getViewHeight() { 1287 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1288 } 1289 1290 private int getViewHeightWithTitle() { 1291 int height = getHeight(); 1292 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1293 height -= getHorizontalScrollbarHeight(); 1294 } 1295 return height; 1296 } 1297 1298 /** 1299 * @return The SSL certificate for the main top-level page or null if 1300 * there is no certificate (the site is not secure). 1301 */ 1302 public SslCertificate getCertificate() { 1303 return mCertificate; 1304 } 1305 1306 /** 1307 * Sets the SSL certificate for the main top-level page. 1308 */ 1309 public void setCertificate(SslCertificate certificate) { 1310 if (DebugFlags.WEB_VIEW) { 1311 Log.v(LOGTAG, "setCertificate=" + certificate); 1312 } 1313 // here, the certificate can be null (if the site is not secure) 1314 mCertificate = certificate; 1315 } 1316 1317 //------------------------------------------------------------------------- 1318 // Methods called by activity 1319 //------------------------------------------------------------------------- 1320 1321 /** 1322 * Save the username and password for a particular host in the WebView's 1323 * internal database. 1324 * @param host The host that required the credentials. 1325 * @param username The username for the given host. 1326 * @param password The password for the given host. 1327 */ 1328 public void savePassword(String host, String username, String password) { 1329 mDatabase.setUsernamePassword(host, username, password); 1330 } 1331 1332 /** 1333 * Set the HTTP authentication credentials for a given host and realm. 1334 * 1335 * @param host The host for the credentials. 1336 * @param realm The realm for the credentials. 1337 * @param username The username for the password. If it is null, it means 1338 * password can't be saved. 1339 * @param password The password 1340 */ 1341 public void setHttpAuthUsernamePassword(String host, String realm, 1342 String username, String password) { 1343 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1344 } 1345 1346 /** 1347 * Retrieve the HTTP authentication username and password for a given 1348 * host & realm pair 1349 * 1350 * @param host The host for which the credentials apply. 1351 * @param realm The realm for which the credentials apply. 1352 * @return String[] if found, String[0] is username, which can be null and 1353 * String[1] is password. Return null if it can't find anything. 1354 */ 1355 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1356 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1357 } 1358 1359 /** 1360 * Remove Find or Select ActionModes, if active. 1361 */ 1362 private void clearActionModes() { 1363 if (mSelectCallback != null) { 1364 mSelectCallback.finish(); 1365 } 1366 if (mFindCallback != null) { 1367 mFindCallback.finish(); 1368 } 1369 } 1370 1371 /** 1372 * Called to clear state when moving from one page to another, or changing 1373 * in some other way that makes elements associated with the current page 1374 * (such as WebTextView or ActionModes) no longer relevant. 1375 */ 1376 private void clearHelpers() { 1377 clearTextEntry(); 1378 clearActionModes(); 1379 dismissFullScreenMode(); 1380 } 1381 1382 /** 1383 * Destroy the internal state of the WebView. This method should be called 1384 * after the WebView has been removed from the view system. No other 1385 * methods may be called on a WebView after destroy. 1386 */ 1387 public void destroy() { 1388 clearHelpers(); 1389 if (mListBoxDialog != null) { 1390 mListBoxDialog.dismiss(); 1391 mListBoxDialog = null; 1392 } 1393 if (mWebViewCore != null) { 1394 // Set the handlers to null before destroying WebViewCore so no 1395 // more messages will be posted. 1396 mCallbackProxy.setWebViewClient(null); 1397 mCallbackProxy.setWebChromeClient(null); 1398 // Tell WebViewCore to destroy itself 1399 synchronized (this) { 1400 WebViewCore webViewCore = mWebViewCore; 1401 mWebViewCore = null; // prevent using partial webViewCore 1402 webViewCore.destroy(); 1403 } 1404 // Remove any pending messages that might not be serviced yet. 1405 mPrivateHandler.removeCallbacksAndMessages(null); 1406 mCallbackProxy.removeCallbacksAndMessages(null); 1407 // Wake up the WebCore thread just in case it is waiting for a 1408 // JavaScript dialog. 1409 synchronized (mCallbackProxy) { 1410 mCallbackProxy.notify(); 1411 } 1412 } 1413 if (mNativeClass != 0) { 1414 nativeDestroy(); 1415 mNativeClass = 0; 1416 } 1417 } 1418 1419 /** 1420 * Enables platform notifications of data state and proxy changes. 1421 */ 1422 public static void enablePlatformNotifications() { 1423 Network.enablePlatformNotifications(); 1424 } 1425 1426 /** 1427 * If platform notifications are enabled, this should be called 1428 * from the Activity's onPause() or onStop(). 1429 */ 1430 public static void disablePlatformNotifications() { 1431 Network.disablePlatformNotifications(); 1432 } 1433 1434 /** 1435 * Sets JavaScript engine flags. 1436 * 1437 * @param flags JS engine flags in a String 1438 * 1439 * @hide pending API solidification 1440 */ 1441 public void setJsFlags(String flags) { 1442 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1443 } 1444 1445 /** 1446 * Inform WebView of the network state. This is used to set 1447 * the JavaScript property window.navigator.isOnline and 1448 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1449 * @param networkUp boolean indicating if network is available 1450 */ 1451 public void setNetworkAvailable(boolean networkUp) { 1452 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1453 networkUp ? 1 : 0, 0); 1454 } 1455 1456 /** 1457 * Inform WebView about the current network type. 1458 * {@hide} 1459 */ 1460 public void setNetworkType(String type, String subtype) { 1461 Map<String, String> map = new HashMap<String, String>(); 1462 map.put("type", type); 1463 map.put("subtype", subtype); 1464 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1465 } 1466 /** 1467 * Save the state of this WebView used in 1468 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1469 * method no longer stores the display data for this WebView. The previous 1470 * behavior could potentially leak files if {@link #restoreState} was never 1471 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1472 * and restoring the display data. 1473 * @param outState The Bundle to store the WebView state. 1474 * @return The same copy of the back/forward list used to save the state. If 1475 * saveState fails, the returned list will be null. 1476 * @see #savePicture 1477 * @see #restorePicture 1478 */ 1479 public WebBackForwardList saveState(Bundle outState) { 1480 if (outState == null) { 1481 return null; 1482 } 1483 // We grab a copy of the back/forward list because a client of WebView 1484 // may have invalidated the history list by calling clearHistory. 1485 WebBackForwardList list = copyBackForwardList(); 1486 final int currentIndex = list.getCurrentIndex(); 1487 final int size = list.getSize(); 1488 // We should fail saving the state if the list is empty or the index is 1489 // not in a valid range. 1490 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1491 return null; 1492 } 1493 outState.putInt("index", currentIndex); 1494 // FIXME: This should just be a byte[][] instead of ArrayList but 1495 // Parcel.java does not have the code to handle multi-dimensional 1496 // arrays. 1497 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1498 for (int i = 0; i < size; i++) { 1499 WebHistoryItem item = list.getItemAtIndex(i); 1500 if (null == item) { 1501 // FIXME: this shouldn't happen 1502 // need to determine how item got set to null 1503 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1504 return null; 1505 } 1506 byte[] data = item.getFlattenedData(); 1507 if (data == null) { 1508 // It would be very odd to not have any data for a given history 1509 // item. And we will fail to rebuild the history list without 1510 // flattened data. 1511 return null; 1512 } 1513 history.add(data); 1514 } 1515 outState.putSerializable("history", history); 1516 if (mCertificate != null) { 1517 outState.putBundle("certificate", 1518 SslCertificate.saveState(mCertificate)); 1519 } 1520 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1521 mZoomManager.saveZoomState(outState); 1522 return list; 1523 } 1524 1525 /** 1526 * Save the current display data to the Bundle given. Used in conjunction 1527 * with {@link #saveState}. 1528 * @param b A Bundle to store the display data. 1529 * @param dest The file to store the serialized picture data. Will be 1530 * overwritten with this WebView's picture data. 1531 * @return True if the picture was successfully saved. 1532 */ 1533 public boolean savePicture(Bundle b, final File dest) { 1534 if (dest == null || b == null) { 1535 return false; 1536 } 1537 final Picture p = capturePicture(); 1538 // Use a temporary file while writing to ensure the destination file 1539 // contains valid data. 1540 final File temp = new File(dest.getPath() + ".writing"); 1541 new Thread(new Runnable() { 1542 public void run() { 1543 FileOutputStream out = null; 1544 try { 1545 out = new FileOutputStream(temp); 1546 p.writeToStream(out); 1547 // Writing the picture succeeded, rename the temporary file 1548 // to the destination. 1549 temp.renameTo(dest); 1550 } catch (Exception e) { 1551 // too late to do anything about it. 1552 } finally { 1553 if (out != null) { 1554 try { 1555 out.close(); 1556 } catch (Exception e) { 1557 // Can't do anything about that 1558 } 1559 } 1560 temp.delete(); 1561 } 1562 } 1563 }).start(); 1564 // now update the bundle 1565 b.putInt("scrollX", mScrollX); 1566 b.putInt("scrollY", mScrollY); 1567 mZoomManager.saveZoomState(b); 1568 return true; 1569 } 1570 1571 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1572 int sx = b.getInt("scrollX", 0); 1573 int sy = b.getInt("scrollY", 0); 1574 1575 mDrawHistory = true; 1576 mHistoryPicture = p; 1577 mScrollX = sx; 1578 mScrollY = sy; 1579 mZoomManager.restoreZoomState(b); 1580 final float scale = mZoomManager.getScale(); 1581 mHistoryWidth = Math.round(p.getWidth() * scale); 1582 mHistoryHeight = Math.round(p.getHeight() * scale); 1583 1584 invalidate(); 1585 } 1586 1587 /** 1588 * Restore the display data that was save in {@link #savePicture}. Used in 1589 * conjunction with {@link #restoreState}. 1590 * @param b A Bundle containing the saved display data. 1591 * @param src The file where the picture data was stored. 1592 * @return True if the picture was successfully restored. 1593 */ 1594 public boolean restorePicture(Bundle b, File src) { 1595 if (src == null || b == null) { 1596 return false; 1597 } 1598 if (!src.exists()) { 1599 return false; 1600 } 1601 try { 1602 final FileInputStream in = new FileInputStream(src); 1603 final Bundle copy = new Bundle(b); 1604 new Thread(new Runnable() { 1605 public void run() { 1606 try { 1607 final Picture p = Picture.createFromStream(in); 1608 if (p != null) { 1609 // Post a runnable on the main thread to update the 1610 // history picture fields. 1611 mPrivateHandler.post(new Runnable() { 1612 public void run() { 1613 restoreHistoryPictureFields(p, copy); 1614 } 1615 }); 1616 } 1617 } finally { 1618 try { 1619 in.close(); 1620 } catch (Exception e) { 1621 // Nothing we can do now. 1622 } 1623 } 1624 } 1625 }).start(); 1626 } catch (FileNotFoundException e){ 1627 e.printStackTrace(); 1628 } 1629 return true; 1630 } 1631 1632 /** 1633 * Restore the state of this WebView from the given map used in 1634 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1635 * be called to restore the state of the WebView before using the object. If 1636 * it is called after the WebView has had a chance to build state (load 1637 * pages, create a back/forward list, etc.) there may be undesirable 1638 * side-effects. Please note that this method no longer restores the 1639 * display data for this WebView. See {@link #savePicture} and {@link 1640 * #restorePicture} for saving and restoring the display data. 1641 * @param inState The incoming Bundle of state. 1642 * @return The restored back/forward list or null if restoreState failed. 1643 * @see #savePicture 1644 * @see #restorePicture 1645 */ 1646 public WebBackForwardList restoreState(Bundle inState) { 1647 WebBackForwardList returnList = null; 1648 if (inState == null) { 1649 return returnList; 1650 } 1651 if (inState.containsKey("index") && inState.containsKey("history")) { 1652 mCertificate = SslCertificate.restoreState( 1653 inState.getBundle("certificate")); 1654 1655 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1656 final int index = inState.getInt("index"); 1657 // We can't use a clone of the list because we need to modify the 1658 // shared copy, so synchronize instead to prevent concurrent 1659 // modifications. 1660 synchronized (list) { 1661 final List<byte[]> history = 1662 (List<byte[]>) inState.getSerializable("history"); 1663 final int size = history.size(); 1664 // Check the index bounds so we don't crash in native code while 1665 // restoring the history index. 1666 if (index < 0 || index >= size) { 1667 return null; 1668 } 1669 for (int i = 0; i < size; i++) { 1670 byte[] data = history.remove(0); 1671 if (data == null) { 1672 // If we somehow have null data, we cannot reconstruct 1673 // the item and thus our history list cannot be rebuilt. 1674 return null; 1675 } 1676 WebHistoryItem item = new WebHistoryItem(data); 1677 list.addHistoryItem(item); 1678 } 1679 // Grab the most recent copy to return to the caller. 1680 returnList = copyBackForwardList(); 1681 // Update the copy to have the correct index. 1682 returnList.setCurrentIndex(index); 1683 } 1684 // Restore private browsing setting. 1685 if (inState.getBoolean("privateBrowsingEnabled")) { 1686 getSettings().setPrivateBrowsingEnabled(true); 1687 } 1688 mZoomManager.restoreZoomState(inState); 1689 // Remove all pending messages because we are restoring previous 1690 // state. 1691 mWebViewCore.removeMessages(); 1692 // Send a restore state message. 1693 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1694 } 1695 return returnList; 1696 } 1697 1698 /** 1699 * Load the given url with the extra headers. 1700 * @param url The url of the resource to load. 1701 * @param extraHeaders The extra headers sent with this url. This should not 1702 * include the common headers like "user-agent". If it does, it 1703 * will be replaced by the intrinsic value of the WebView. 1704 */ 1705 public void loadUrl(String url, Map<String, String> extraHeaders) { 1706 switchOutDrawHistory(); 1707 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1708 arg.mUrl = url; 1709 arg.mExtraHeaders = extraHeaders; 1710 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1711 clearHelpers(); 1712 } 1713 1714 /** 1715 * Load the given url. 1716 * @param url The url of the resource to load. 1717 */ 1718 public void loadUrl(String url) { 1719 if (url == null) { 1720 return; 1721 } 1722 loadUrl(url, null); 1723 } 1724 1725 /** 1726 * Load the url with postData using "POST" method into the WebView. If url 1727 * is not a network url, it will be loaded with {link 1728 * {@link #loadUrl(String)} instead. 1729 * 1730 * @param url The url of the resource to load. 1731 * @param postData The data will be passed to "POST" request. 1732 */ 1733 public void postUrl(String url, byte[] postData) { 1734 if (URLUtil.isNetworkUrl(url)) { 1735 switchOutDrawHistory(); 1736 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1737 arg.mUrl = url; 1738 arg.mPostData = postData; 1739 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1740 clearHelpers(); 1741 } else { 1742 loadUrl(url); 1743 } 1744 } 1745 1746 /** 1747 * Load the given data into the WebView. This will load the data into 1748 * WebView using the data: scheme. Content loaded through this mechanism 1749 * does not have the ability to load content from the network. 1750 * @param data A String of data in the given encoding. The date must 1751 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1752 * %27, %3f respectively. 1753 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1754 * @param encoding The encoding of the data. i.e. utf-8, base64 1755 */ 1756 public void loadData(String data, String mimeType, String encoding) { 1757 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1758 } 1759 1760 /** 1761 * Load the given data into the WebView, use the provided URL as the base 1762 * URL for the content. The base URL is the URL that represents the page 1763 * that is loaded through this interface. As such, it is used to resolve any 1764 * relative URLs. The historyUrl is used for the history entry. 1765 * <p> 1766 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1767 * files through "file:///android_asset/" for the sub resources is more 1768 * restricted. If you provide null or empty string as baseUrl, you won't be 1769 * able to access asset files. If the baseUrl is anything other than 1770 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1771 * sub resources. 1772 * 1773 * @param baseUrl Url to resolve relative paths with, if null defaults to 1774 * "about:blank" 1775 * @param data A String of data in the given encoding. 1776 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1777 * defaults to "text/html" 1778 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1779 * @param historyUrl URL to use as the history entry. Can be null. 1780 */ 1781 public void loadDataWithBaseURL(String baseUrl, String data, 1782 String mimeType, String encoding, String historyUrl) { 1783 1784 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1785 loadData(data, mimeType, encoding); 1786 return; 1787 } 1788 switchOutDrawHistory(); 1789 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1790 arg.mBaseUrl = baseUrl; 1791 arg.mData = data; 1792 arg.mMimeType = mimeType; 1793 arg.mEncoding = encoding; 1794 arg.mHistoryUrl = historyUrl; 1795 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1796 clearHelpers(); 1797 } 1798 1799 /** 1800 * Saves the current view as a web archive. 1801 * 1802 * @param filename The filename where the archive should be placed. 1803 */ 1804 public void saveWebArchive(String filename) { 1805 saveWebArchive(filename, false, null); 1806 } 1807 1808 /* package */ static class SaveWebArchiveMessage { 1809 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1810 mBasename = basename; 1811 mAutoname = autoname; 1812 mCallback = callback; 1813 } 1814 1815 /* package */ final String mBasename; 1816 /* package */ final boolean mAutoname; 1817 /* package */ final ValueCallback<String> mCallback; 1818 /* package */ String mResultFile; 1819 } 1820 1821 /** 1822 * Saves the current view as a web archive. 1823 * 1824 * @param basename The filename where the archive should be placed. 1825 * @param autoname If false, takes basename to be a file. If true, basename 1826 * is assumed to be a directory in which a filename will be 1827 * chosen according to the url of the current page. 1828 * @param callback Called after the web archive has been saved. The 1829 * parameter for onReceiveValue will either be the filename 1830 * under which the file was saved, or null if saving the 1831 * file failed. 1832 */ 1833 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1834 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1835 new SaveWebArchiveMessage(basename, autoname, callback)); 1836 } 1837 1838 /** 1839 * Stop the current load. 1840 */ 1841 public void stopLoading() { 1842 // TODO: should we clear all the messages in the queue before sending 1843 // STOP_LOADING? 1844 switchOutDrawHistory(); 1845 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1846 } 1847 1848 /** 1849 * Reload the current url. 1850 */ 1851 public void reload() { 1852 clearHelpers(); 1853 switchOutDrawHistory(); 1854 mWebViewCore.sendMessage(EventHub.RELOAD); 1855 } 1856 1857 /** 1858 * Return true if this WebView has a back history item. 1859 * @return True iff this WebView has a back history item. 1860 */ 1861 public boolean canGoBack() { 1862 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1863 synchronized (l) { 1864 if (l.getClearPending()) { 1865 return false; 1866 } else { 1867 return l.getCurrentIndex() > 0; 1868 } 1869 } 1870 } 1871 1872 /** 1873 * Go back in the history of this WebView. 1874 */ 1875 public void goBack() { 1876 goBackOrForward(-1); 1877 } 1878 1879 /** 1880 * Return true if this WebView has a forward history item. 1881 * @return True iff this Webview has a forward history item. 1882 */ 1883 public boolean canGoForward() { 1884 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1885 synchronized (l) { 1886 if (l.getClearPending()) { 1887 return false; 1888 } else { 1889 return l.getCurrentIndex() < l.getSize() - 1; 1890 } 1891 } 1892 } 1893 1894 /** 1895 * Go forward in the history of this WebView. 1896 */ 1897 public void goForward() { 1898 goBackOrForward(1); 1899 } 1900 1901 /** 1902 * Return true if the page can go back or forward the given 1903 * number of steps. 1904 * @param steps The negative or positive number of steps to move the 1905 * history. 1906 */ 1907 public boolean canGoBackOrForward(int steps) { 1908 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1909 synchronized (l) { 1910 if (l.getClearPending()) { 1911 return false; 1912 } else { 1913 int newIndex = l.getCurrentIndex() + steps; 1914 return newIndex >= 0 && newIndex < l.getSize(); 1915 } 1916 } 1917 } 1918 1919 /** 1920 * Go to the history item that is the number of steps away from 1921 * the current item. Steps is negative if backward and positive 1922 * if forward. 1923 * @param steps The number of steps to take back or forward in the back 1924 * forward list. 1925 */ 1926 public void goBackOrForward(int steps) { 1927 goBackOrForward(steps, false); 1928 } 1929 1930 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1931 if (steps != 0) { 1932 clearHelpers(); 1933 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1934 ignoreSnapshot ? 1 : 0); 1935 } 1936 } 1937 1938 /** 1939 * Returns true if private browsing is enabled in this WebView. 1940 */ 1941 public boolean isPrivateBrowsingEnabled() { 1942 return getSettings().isPrivateBrowsingEnabled(); 1943 } 1944 1945 private void startPrivateBrowsing() { 1946 boolean wasPrivateBrowsingEnabled = isPrivateBrowsingEnabled(); 1947 1948 getSettings().setPrivateBrowsingEnabled(true); 1949 1950 if (!wasPrivateBrowsingEnabled) { 1951 loadUrl("browser:incognito"); 1952 } 1953 } 1954 1955 private boolean extendScroll(int y) { 1956 int finalY = mScroller.getFinalY(); 1957 int newY = pinLocY(finalY + y); 1958 if (newY == finalY) return false; 1959 mScroller.setFinalY(newY); 1960 mScroller.extendDuration(computeDuration(0, y)); 1961 return true; 1962 } 1963 1964 /** 1965 * Scroll the contents of the view up by half the view size 1966 * @param top true to jump to the top of the page 1967 * @return true if the page was scrolled 1968 */ 1969 public boolean pageUp(boolean top) { 1970 if (mNativeClass == 0) { 1971 return false; 1972 } 1973 nativeClearCursor(); // start next trackball movement from page edge 1974 if (top) { 1975 // go to the top of the document 1976 return pinScrollTo(mScrollX, 0, true, 0); 1977 } 1978 // Page up 1979 int h = getHeight(); 1980 int y; 1981 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1982 y = -h + PAGE_SCROLL_OVERLAP; 1983 } else { 1984 y = -h / 2; 1985 } 1986 mUserScroll = true; 1987 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1988 : extendScroll(y); 1989 } 1990 1991 /** 1992 * Scroll the contents of the view down by half the page size 1993 * @param bottom true to jump to bottom of page 1994 * @return true if the page was scrolled 1995 */ 1996 public boolean pageDown(boolean bottom) { 1997 if (mNativeClass == 0) { 1998 return false; 1999 } 2000 nativeClearCursor(); // start next trackball movement from page edge 2001 if (bottom) { 2002 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2003 } 2004 // Page down. 2005 int h = getHeight(); 2006 int y; 2007 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2008 y = h - PAGE_SCROLL_OVERLAP; 2009 } else { 2010 y = h / 2; 2011 } 2012 mUserScroll = true; 2013 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2014 : extendScroll(y); 2015 } 2016 2017 /** 2018 * Clear the view so that onDraw() will draw nothing but white background, 2019 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2020 */ 2021 public void clearView() { 2022 mContentWidth = 0; 2023 mContentHeight = 0; 2024 setBaseLayer(0, null); 2025 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2026 } 2027 2028 /** 2029 * Return a new picture that captures the current display of the webview. 2030 * This is a copy of the display, and will be unaffected if the webview 2031 * later loads a different URL. 2032 * 2033 * @return a picture containing the current contents of the view. Note this 2034 * picture is of the entire document, and is not restricted to the 2035 * bounds of the view. 2036 */ 2037 public Picture capturePicture() { 2038 if (mNativeClass == 0) return null; 2039 Picture result = new Picture(); 2040 nativeCopyBaseContentToPicture(result); 2041 return result; 2042 } 2043 2044 /** 2045 * Return true if the browser is displaying a TextView for text input. 2046 */ 2047 private boolean inEditingMode() { 2048 return mWebTextView != null && mWebTextView.getParent() != null; 2049 } 2050 2051 /** 2052 * Remove the WebTextView. 2053 */ 2054 private void clearTextEntry() { 2055 if (inEditingMode()) { 2056 mWebTextView.remove(); 2057 } else { 2058 // The keyboard may be open with the WebView as the served view 2059 hideSoftKeyboard(); 2060 } 2061 } 2062 2063 /** 2064 * Return the current scale of the WebView 2065 * @return The current scale. 2066 */ 2067 public float getScale() { 2068 return mZoomManager.getScale(); 2069 } 2070 2071 /** 2072 * Set the initial scale for the WebView. 0 means default. If 2073 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2074 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2075 * WebView starts will this value as initial scale. 2076 * 2077 * @param scaleInPercent The initial scale in percent. 2078 */ 2079 public void setInitialScale(int scaleInPercent) { 2080 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2081 } 2082 2083 /** 2084 * Invoke the graphical zoom picker widget for this WebView. This will 2085 * result in the zoom widget appearing on the screen to control the zoom 2086 * level of this WebView. 2087 */ 2088 public void invokeZoomPicker() { 2089 if (!getSettings().supportZoom()) { 2090 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2091 return; 2092 } 2093 clearHelpers(); 2094 mZoomManager.invokeZoomPicker(); 2095 } 2096 2097 /** 2098 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2099 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2100 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2101 * anchor does not have a url or if it is a JavaScript url, the type will 2102 * be UNKNOWN_TYPE and the url has to be retrieved through 2103 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2104 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2105 * the "extra" field. A type of 2106 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2107 * a child node. If a phone number is found, the HitTestResult type is set 2108 * to PHONE_TYPE and the phone number is set in the "extra" field of 2109 * HitTestResult. If a map address is found, the HitTestResult type is set 2110 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2111 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2112 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2113 * HitTestResult type is set to UNKNOWN_TYPE. 2114 */ 2115 public HitTestResult getHitTestResult() { 2116 return hitTestResult(mInitialHitTestResult); 2117 } 2118 2119 private HitTestResult hitTestResult(HitTestResult fallback) { 2120 if (mNativeClass == 0) { 2121 return null; 2122 } 2123 2124 HitTestResult result = new HitTestResult(); 2125 if (nativeHasCursorNode()) { 2126 if (nativeCursorIsTextInput()) { 2127 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2128 } else { 2129 String text = nativeCursorText(); 2130 if (text != null) { 2131 if (text.startsWith(SCHEME_TEL)) { 2132 result.setType(HitTestResult.PHONE_TYPE); 2133 result.setExtra(text.substring(SCHEME_TEL.length())); 2134 } else if (text.startsWith(SCHEME_MAILTO)) { 2135 result.setType(HitTestResult.EMAIL_TYPE); 2136 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2137 } else if (text.startsWith(SCHEME_GEO)) { 2138 result.setType(HitTestResult.GEO_TYPE); 2139 result.setExtra(URLDecoder.decode(text 2140 .substring(SCHEME_GEO.length()))); 2141 } else if (nativeCursorIsAnchor()) { 2142 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2143 result.setExtra(text); 2144 } 2145 } 2146 } 2147 } else if (fallback != null) { 2148 /* If webkit causes a rebuild while the long press is in progress, 2149 * the cursor node may be reset, even if it is still around. This 2150 * uses the cursor node saved when the touch began. Since the 2151 * nativeImageURI below only changes the result if it is successful, 2152 * this uses the data beneath the touch if available or the original 2153 * tap data otherwise. 2154 */ 2155 Log.v(LOGTAG, "hitTestResult use fallback"); 2156 result = fallback; 2157 } 2158 int type = result.getType(); 2159 if (type == HitTestResult.UNKNOWN_TYPE 2160 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2161 // Now check to see if it is an image. 2162 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2163 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2164 String text = nativeImageURI(contentX, contentY); 2165 if (text != null) { 2166 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2167 HitTestResult.IMAGE_TYPE : 2168 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2169 result.setExtra(text); 2170 } 2171 } 2172 return result; 2173 } 2174 2175 // Called by JNI when the DOM has changed the focus. Clear the focus so 2176 // that new keys will go to the newly focused field 2177 private void domChangedFocus() { 2178 if (inEditingMode()) { 2179 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2180 } 2181 } 2182 /** 2183 * Request the anchor or image element URL at the last tapped point. 2184 * If hrefMsg is null, this method returns immediately and does not 2185 * dispatch hrefMsg to its target. If the tapped point hits an image, 2186 * an anchor, or an image in an anchor, the message associates 2187 * strings in named keys in its data. The value paired with the key 2188 * may be an empty string. 2189 * 2190 * @param hrefMsg This message will be dispatched with the result of the 2191 * request. The message data contains three keys: 2192 * - "url" returns the anchor's href attribute. 2193 * - "title" returns the anchor's text. 2194 * - "src" returns the image's src attribute. 2195 */ 2196 public void requestFocusNodeHref(Message hrefMsg) { 2197 if (hrefMsg == null) { 2198 return; 2199 } 2200 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2201 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2202 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2203 contentX, contentY, hrefMsg); 2204 } 2205 2206 /** 2207 * Request the url of the image last touched by the user. msg will be sent 2208 * to its target with a String representing the url as its object. 2209 * 2210 * @param msg This message will be dispatched with the result of the request 2211 * as the data member with "url" as key. The result can be null. 2212 */ 2213 public void requestImageRef(Message msg) { 2214 if (0 == mNativeClass) return; // client isn't initialized 2215 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2216 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2217 String ref = nativeImageURI(contentX, contentY); 2218 Bundle data = msg.getData(); 2219 data.putString("url", ref); 2220 msg.setData(data); 2221 msg.sendToTarget(); 2222 } 2223 2224 static int pinLoc(int x, int viewMax, int docMax) { 2225// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2226 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2227 // pin the short document to the top/left of the screen 2228 x = 0; 2229// Log.d(LOGTAG, "--- center " + x); 2230 } else if (x < 0) { 2231 x = 0; 2232// Log.d(LOGTAG, "--- zero"); 2233 } else if (x + viewMax > docMax) { 2234 x = docMax - viewMax; 2235// Log.d(LOGTAG, "--- pin " + x); 2236 } 2237 return x; 2238 } 2239 2240 // Expects x in view coordinates 2241 int pinLocX(int x) { 2242 if (mInOverScrollMode) return x; 2243 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2244 } 2245 2246 // Expects y in view coordinates 2247 int pinLocY(int y) { 2248 if (mInOverScrollMode) return y; 2249 return pinLoc(y, getViewHeightWithTitle(), 2250 computeRealVerticalScrollRange() + getTitleHeight()); 2251 } 2252 2253 /** 2254 * A title bar which is embedded in this WebView, and scrolls along with it 2255 * vertically, but not horizontally. 2256 */ 2257 private View mTitleBar; 2258 2259 /** 2260 * Add or remove a title bar to be embedded into the WebView, and scroll 2261 * along with it vertically, while remaining in view horizontally. Pass 2262 * null to remove the title bar from the WebView, and return to drawing 2263 * the WebView normally without translating to account for the title bar. 2264 * @hide 2265 */ 2266 public void setEmbeddedTitleBar(View v) { 2267 if (mTitleBar == v) return; 2268 if (mTitleBar != null) { 2269 removeView(mTitleBar); 2270 } 2271 if (null != v) { 2272 addView(v, new AbsoluteLayout.LayoutParams( 2273 ViewGroup.LayoutParams.MATCH_PARENT, 2274 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2275 } 2276 mTitleBar = v; 2277 } 2278 2279 /** 2280 * Given a distance in view space, convert it to content space. Note: this 2281 * does not reflect translation, just scaling, so this should not be called 2282 * with coordinates, but should be called for dimensions like width or 2283 * height. 2284 */ 2285 private int viewToContentDimension(int d) { 2286 return Math.round(d * mZoomManager.getInvScale()); 2287 } 2288 2289 /** 2290 * Given an x coordinate in view space, convert it to content space. Also 2291 * may be used for absolute heights (such as for the WebTextView's 2292 * textSize, which is unaffected by the height of the title bar). 2293 */ 2294 /*package*/ int viewToContentX(int x) { 2295 return viewToContentDimension(x); 2296 } 2297 2298 /** 2299 * Given a y coordinate in view space, convert it to content space. 2300 * Takes into account the height of the title bar if there is one 2301 * embedded into the WebView. 2302 */ 2303 /*package*/ int viewToContentY(int y) { 2304 return viewToContentDimension(y - getTitleHeight()); 2305 } 2306 2307 /** 2308 * Given a x coordinate in view space, convert it to content space. 2309 * Returns the result as a float. 2310 */ 2311 private float viewToContentXf(int x) { 2312 return x * mZoomManager.getInvScale(); 2313 } 2314 2315 /** 2316 * Given a y coordinate in view space, convert it to content space. 2317 * Takes into account the height of the title bar if there is one 2318 * embedded into the WebView. Returns the result as a float. 2319 */ 2320 private float viewToContentYf(int y) { 2321 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2322 } 2323 2324 /** 2325 * Given a distance in content space, convert it to view space. Note: this 2326 * does not reflect translation, just scaling, so this should not be called 2327 * with coordinates, but should be called for dimensions like width or 2328 * height. 2329 */ 2330 /*package*/ int contentToViewDimension(int d) { 2331 return Math.round(d * mZoomManager.getScale()); 2332 } 2333 2334 /** 2335 * Given an x coordinate in content space, convert it to view 2336 * space. 2337 */ 2338 /*package*/ int contentToViewX(int x) { 2339 return contentToViewDimension(x); 2340 } 2341 2342 /** 2343 * Given a y coordinate in content space, convert it to view 2344 * space. Takes into account the height of the title bar. 2345 */ 2346 /*package*/ int contentToViewY(int y) { 2347 return contentToViewDimension(y) + getTitleHeight(); 2348 } 2349 2350 private Rect contentToViewRect(Rect x) { 2351 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2352 contentToViewX(x.right), contentToViewY(x.bottom)); 2353 } 2354 2355 /* To invalidate a rectangle in content coordinates, we need to transform 2356 the rect into view coordinates, so we can then call invalidate(...). 2357 2358 Normally, we would just call contentToView[XY](...), which eventually 2359 calls Math.round(coordinate * mActualScale). However, for invalidates, 2360 we need to account for the slop that occurs with antialiasing. To 2361 address that, we are a little more liberal in the size of the rect that 2362 we invalidate. 2363 2364 This liberal calculation calls floor() for the top/left, and ceil() for 2365 the bottom/right coordinates. This catches the possible extra pixels of 2366 antialiasing that we might have missed with just round(). 2367 */ 2368 2369 // Called by JNI to invalidate the View, given rectangle coordinates in 2370 // content space 2371 private void viewInvalidate(int l, int t, int r, int b) { 2372 final float scale = mZoomManager.getScale(); 2373 final int dy = getTitleHeight(); 2374 invalidate((int)Math.floor(l * scale), 2375 (int)Math.floor(t * scale) + dy, 2376 (int)Math.ceil(r * scale), 2377 (int)Math.ceil(b * scale) + dy); 2378 } 2379 2380 // Called by JNI to invalidate the View after a delay, given rectangle 2381 // coordinates in content space 2382 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2383 final float scale = mZoomManager.getScale(); 2384 final int dy = getTitleHeight(); 2385 postInvalidateDelayed(delay, 2386 (int)Math.floor(l * scale), 2387 (int)Math.floor(t * scale) + dy, 2388 (int)Math.ceil(r * scale), 2389 (int)Math.ceil(b * scale) + dy); 2390 } 2391 2392 private void invalidateContentRect(Rect r) { 2393 viewInvalidate(r.left, r.top, r.right, r.bottom); 2394 } 2395 2396 // stop the scroll animation, and don't let a subsequent fling add 2397 // to the existing velocity 2398 private void abortAnimation() { 2399 mScroller.abortAnimation(); 2400 mLastVelocity = 0; 2401 } 2402 2403 /* call from webcoreview.draw(), so we're still executing in the UI thread 2404 */ 2405 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2406 2407 // premature data from webkit, ignore 2408 if ((w | h) == 0) { 2409 return; 2410 } 2411 2412 // don't abort a scroll animation if we didn't change anything 2413 if (mContentWidth != w || mContentHeight != h) { 2414 // record new dimensions 2415 mContentWidth = w; 2416 mContentHeight = h; 2417 // If history Picture is drawn, don't update scroll. They will be 2418 // updated when we get out of that mode. 2419 if (!mDrawHistory) { 2420 // repin our scroll, taking into account the new content size 2421 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2422 if (!mScroller.isFinished()) { 2423 // We are in the middle of a scroll. Repin the final scroll 2424 // position. 2425 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2426 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2427 } 2428 } 2429 } 2430 contentSizeChanged(updateLayout); 2431 } 2432 2433 // Used to avoid sending many visible rect messages. 2434 private Rect mLastVisibleRectSent; 2435 private Rect mLastGlobalRect; 2436 2437 Rect sendOurVisibleRect() { 2438 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2439 Rect rect = new Rect(); 2440 calcOurContentVisibleRect(rect); 2441 // Rect.equals() checks for null input. 2442 if (!rect.equals(mLastVisibleRectSent)) { 2443 Point pos = new Point(rect.left, rect.top); 2444 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2445 nativeMoveGeneration(), mUserScroll ? 1 : 0, pos); 2446 mLastVisibleRectSent = rect; 2447 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2448 } 2449 Rect globalRect = new Rect(); 2450 if (getGlobalVisibleRect(globalRect) 2451 && !globalRect.equals(mLastGlobalRect)) { 2452 if (DebugFlags.WEB_VIEW) { 2453 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2454 + globalRect.top + ",r=" + globalRect.right + ",b=" 2455 + globalRect.bottom); 2456 } 2457 // TODO: the global offset is only used by windowRect() 2458 // in ChromeClientAndroid ; other clients such as touch 2459 // and mouse events could return view + screen relative points. 2460 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2461 mLastGlobalRect = globalRect; 2462 } 2463 return rect; 2464 } 2465 2466 // Sets r to be the visible rectangle of our webview in view coordinates 2467 private void calcOurVisibleRect(Rect r) { 2468 Point p = new Point(); 2469 getGlobalVisibleRect(r, p); 2470 r.offset(-p.x, -p.y); 2471 } 2472 2473 // Sets r to be our visible rectangle in content coordinates 2474 private void calcOurContentVisibleRect(Rect r) { 2475 calcOurVisibleRect(r); 2476 r.left = viewToContentX(r.left); 2477 // viewToContentY will remove the total height of the title bar. Add 2478 // the visible height back in to account for the fact that if the title 2479 // bar is partially visible, the part of the visible rect which is 2480 // displaying our content is displaced by that amount. 2481 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2482 r.right = viewToContentX(r.right); 2483 r.bottom = viewToContentY(r.bottom); 2484 } 2485 2486 // Sets r to be our visible rectangle in content coordinates. We use this 2487 // method on the native side to compute the position of the fixed layers. 2488 // Uses floating coordinates (necessary to correctly place elements when 2489 // the scale factor is not 1) 2490 private void calcOurContentVisibleRectF(RectF r) { 2491 Rect ri = new Rect(0,0,0,0); 2492 calcOurVisibleRect(ri); 2493 r.left = viewToContentXf(ri.left); 2494 // viewToContentY will remove the total height of the title bar. Add 2495 // the visible height back in to account for the fact that if the title 2496 // bar is partially visible, the part of the visible rect which is 2497 // displaying our content is displaced by that amount. 2498 r.top = viewToContentYf(ri.top + getVisibleTitleHeight()); 2499 r.right = viewToContentXf(ri.right); 2500 r.bottom = viewToContentYf(ri.bottom); 2501 } 2502 2503 static class ViewSizeData { 2504 int mWidth; 2505 int mHeight; 2506 int mTextWrapWidth; 2507 int mAnchorX; 2508 int mAnchorY; 2509 float mScale; 2510 boolean mIgnoreHeight; 2511 } 2512 2513 /** 2514 * Compute unzoomed width and height, and if they differ from the last 2515 * values we sent, send them to webkit (to be used as new viewport) 2516 * 2517 * @param force ensures that the message is sent to webkit even if the width 2518 * or height has not changed since the last message 2519 * 2520 * @return true if new values were sent 2521 */ 2522 boolean sendViewSizeZoom(boolean force) { 2523 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2524 2525 int viewWidth = getViewWidth(); 2526 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2527 int newHeight = Math.round((getViewHeightWithTitle() - getTitleHeight()) * mZoomManager.getInvScale()); 2528 /* 2529 * Because the native side may have already done a layout before the 2530 * View system was able to measure us, we have to send a height of 0 to 2531 * remove excess whitespace when we grow our width. This will trigger a 2532 * layout and a change in content size. This content size change will 2533 * mean that contentSizeChanged will either call this method directly or 2534 * indirectly from onSizeChanged. 2535 */ 2536 if (newWidth > mLastWidthSent && mWrapContent) { 2537 newHeight = 0; 2538 } 2539 // Avoid sending another message if the dimensions have not changed. 2540 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force) { 2541 ViewSizeData data = new ViewSizeData(); 2542 data.mWidth = newWidth; 2543 data.mHeight = newHeight; 2544 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2545 data.mScale = mZoomManager.getScale(); 2546 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2547 && !mHeightCanMeasure; 2548 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2549 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2550 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2551 mLastWidthSent = newWidth; 2552 mLastHeightSent = newHeight; 2553 mZoomManager.clearDocumentAnchor(); 2554 return true; 2555 } 2556 return false; 2557 } 2558 2559 private int computeRealHorizontalScrollRange() { 2560 if (mDrawHistory) { 2561 return mHistoryWidth; 2562 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2563 && !mZoomManager.canZoomOut()) { 2564 // only honor the scrollbar mode when it is at minimum zoom level 2565 return computeHorizontalScrollExtent(); 2566 } else { 2567 // to avoid rounding error caused unnecessary scrollbar, use floor 2568 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2569 } 2570 } 2571 2572 @Override 2573 protected int computeHorizontalScrollRange() { 2574 int range = computeRealHorizontalScrollRange(); 2575 2576 // Adjust reported range if overscrolled to compress the scroll bars 2577 final int scrollX = mScrollX; 2578 final int overscrollRight = computeMaxScrollX(); 2579 if (scrollX < 0) { 2580 range -= scrollX; 2581 } else if (scrollX > overscrollRight) { 2582 range += scrollX - overscrollRight; 2583 } 2584 2585 return range; 2586 } 2587 2588 @Override 2589 protected int computeHorizontalScrollOffset() { 2590 return Math.max(mScrollX, 0); 2591 } 2592 2593 private int computeRealVerticalScrollRange() { 2594 if (mDrawHistory) { 2595 return mHistoryHeight; 2596 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2597 && !mZoomManager.canZoomOut()) { 2598 // only honor the scrollbar mode when it is at minimum zoom level 2599 return computeVerticalScrollExtent(); 2600 } else { 2601 // to avoid rounding error caused unnecessary scrollbar, use floor 2602 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2603 } 2604 } 2605 2606 @Override 2607 protected int computeVerticalScrollRange() { 2608 int range = computeRealVerticalScrollRange(); 2609 2610 // Adjust reported range if overscrolled to compress the scroll bars 2611 final int scrollY = mScrollY; 2612 final int overscrollBottom = computeMaxScrollY(); 2613 if (scrollY < 0) { 2614 range -= scrollY; 2615 } else if (scrollY > overscrollBottom) { 2616 range += scrollY - overscrollBottom; 2617 } 2618 2619 return range; 2620 } 2621 2622 @Override 2623 protected int computeVerticalScrollOffset() { 2624 return Math.max(mScrollY - getTitleHeight(), 0); 2625 } 2626 2627 @Override 2628 protected int computeVerticalScrollExtent() { 2629 return getViewHeight(); 2630 } 2631 2632 /** @hide */ 2633 @Override 2634 protected void onDrawVerticalScrollBar(Canvas canvas, 2635 Drawable scrollBar, 2636 int l, int t, int r, int b) { 2637 if (mScrollY < 0) { 2638 t -= mScrollY; 2639 } 2640 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2641 scrollBar.draw(canvas); 2642 } 2643 2644 @Override 2645 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2646 boolean clampedY) { 2647 // Special-case layer scrolling so that we do not trigger normal scroll 2648 // updating. 2649 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2650 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2651 mScrollingLayerRect.left = scrollX; 2652 mScrollingLayerRect.top = scrollY; 2653 invalidate(); 2654 return; 2655 } 2656 mInOverScrollMode = false; 2657 int maxX = computeMaxScrollX(); 2658 int maxY = computeMaxScrollY(); 2659 if (maxX == 0) { 2660 // do not over scroll x if the page just fits the screen 2661 scrollX = pinLocX(scrollX); 2662 } else if (scrollX < 0 || scrollX > maxX) { 2663 mInOverScrollMode = true; 2664 } 2665 if (scrollY < 0 || scrollY > maxY) { 2666 mInOverScrollMode = true; 2667 } 2668 2669 int oldX = mScrollX; 2670 int oldY = mScrollY; 2671 2672 super.scrollTo(scrollX, scrollY); 2673 2674 if (mOverScrollGlow != null) { 2675 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2676 } 2677 } 2678 2679 /** 2680 * Get the url for the current page. This is not always the same as the url 2681 * passed to WebViewClient.onPageStarted because although the load for 2682 * that url has begun, the current page may not have changed. 2683 * @return The url for the current page. 2684 */ 2685 public String getUrl() { 2686 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2687 return h != null ? h.getUrl() : null; 2688 } 2689 2690 /** 2691 * Get the original url for the current page. This is not always the same 2692 * as the url passed to WebViewClient.onPageStarted because although the 2693 * load for that url has begun, the current page may not have changed. 2694 * Also, there may have been redirects resulting in a different url to that 2695 * originally requested. 2696 * @return The url that was originally requested for the current page. 2697 */ 2698 public String getOriginalUrl() { 2699 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2700 return h != null ? h.getOriginalUrl() : null; 2701 } 2702 2703 /** 2704 * Get the title for the current page. This is the title of the current page 2705 * until WebViewClient.onReceivedTitle is called. 2706 * @return The title for the current page. 2707 */ 2708 public String getTitle() { 2709 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2710 return h != null ? h.getTitle() : null; 2711 } 2712 2713 /** 2714 * Get the favicon for the current page. This is the favicon of the current 2715 * page until WebViewClient.onReceivedIcon is called. 2716 * @return The favicon for the current page. 2717 */ 2718 public Bitmap getFavicon() { 2719 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2720 return h != null ? h.getFavicon() : null; 2721 } 2722 2723 /** 2724 * Get the touch icon url for the apple-touch-icon <link> element, or 2725 * a URL on this site's server pointing to the standard location of a 2726 * touch icon. 2727 * @hide 2728 */ 2729 public String getTouchIconUrl() { 2730 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2731 return h != null ? h.getTouchIconUrl() : null; 2732 } 2733 2734 /** 2735 * Get the progress for the current page. 2736 * @return The progress for the current page between 0 and 100. 2737 */ 2738 public int getProgress() { 2739 return mCallbackProxy.getProgress(); 2740 } 2741 2742 /** 2743 * @return the height of the HTML content. 2744 */ 2745 public int getContentHeight() { 2746 return mContentHeight; 2747 } 2748 2749 /** 2750 * @return the width of the HTML content. 2751 * @hide 2752 */ 2753 public int getContentWidth() { 2754 return mContentWidth; 2755 } 2756 2757 /** 2758 * Pause all layout, parsing, and JavaScript timers for all webviews. This 2759 * is a global requests, not restricted to just this webview. This can be 2760 * useful if the application has been paused. 2761 */ 2762 public void pauseTimers() { 2763 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2764 } 2765 2766 /** 2767 * Resume all layout, parsing, and JavaScript timers for all webviews. 2768 * This will resume dispatching all timers. 2769 */ 2770 public void resumeTimers() { 2771 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2772 } 2773 2774 /** 2775 * Call this to pause any extra processing associated with this WebView and 2776 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 2777 * is taken offscreen, this could be called to reduce unnecessary CPU or 2778 * network traffic. When the WebView is again "active", call onResume(). 2779 * 2780 * Note that this differs from pauseTimers(), which affects all WebViews. 2781 */ 2782 public void onPause() { 2783 if (!mIsPaused) { 2784 mIsPaused = true; 2785 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2786 } 2787 } 2788 2789 /** 2790 * Call this to resume a WebView after a previous call to onPause(). 2791 */ 2792 public void onResume() { 2793 if (mIsPaused) { 2794 mIsPaused = false; 2795 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2796 } 2797 } 2798 2799 /** 2800 * Returns true if the view is paused, meaning onPause() was called. Calling 2801 * onResume() sets the paused state back to false. 2802 * @hide 2803 */ 2804 public boolean isPaused() { 2805 return mIsPaused; 2806 } 2807 2808 /** 2809 * Call this to inform the view that memory is low so that it can 2810 * free any available memory. 2811 */ 2812 public void freeMemory() { 2813 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2814 } 2815 2816 /** 2817 * Clear the resource cache. Note that the cache is per-application, so 2818 * this will clear the cache for all WebViews used. 2819 * 2820 * @param includeDiskFiles If false, only the RAM cache is cleared. 2821 */ 2822 public void clearCache(boolean includeDiskFiles) { 2823 // Note: this really needs to be a static method as it clears cache for all 2824 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2825 // we can't make this static. 2826 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2827 includeDiskFiles ? 1 : 0, 0); 2828 } 2829 2830 /** 2831 * Make sure that clearing the form data removes the adapter from the 2832 * currently focused textfield if there is one. 2833 */ 2834 public void clearFormData() { 2835 if (inEditingMode()) { 2836 AutoCompleteAdapter adapter = null; 2837 mWebTextView.setAdapterCustom(adapter); 2838 } 2839 } 2840 2841 /** 2842 * Tell the WebView to clear its internal back/forward list. 2843 */ 2844 public void clearHistory() { 2845 mCallbackProxy.getBackForwardList().setClearPending(); 2846 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2847 } 2848 2849 /** 2850 * Clear the SSL preferences table stored in response to proceeding with SSL 2851 * certificate errors. 2852 */ 2853 public void clearSslPreferences() { 2854 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2855 } 2856 2857 /** 2858 * Return the WebBackForwardList for this WebView. This contains the 2859 * back/forward list for use in querying each item in the history stack. 2860 * This is a copy of the private WebBackForwardList so it contains only a 2861 * snapshot of the current state. Multiple calls to this method may return 2862 * different objects. The object returned from this method will not be 2863 * updated to reflect any new state. 2864 */ 2865 public WebBackForwardList copyBackForwardList() { 2866 return mCallbackProxy.getBackForwardList().clone(); 2867 } 2868 2869 /* 2870 * Highlight and scroll to the next occurance of String in findAll. 2871 * Wraps the page infinitely, and scrolls. Must be called after 2872 * calling findAll. 2873 * 2874 * @param forward Direction to search. 2875 */ 2876 public void findNext(boolean forward) { 2877 if (0 == mNativeClass) return; // client isn't initialized 2878 nativeFindNext(forward); 2879 } 2880 2881 /* 2882 * Find all instances of find on the page and highlight them. 2883 * @param find String to find. 2884 * @return int The number of occurances of the String "find" 2885 * that were found. 2886 */ 2887 public int findAll(String find) { 2888 if (0 == mNativeClass) return 0; // client isn't initialized 2889 int result = find != null ? nativeFindAll(find.toLowerCase(), 2890 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 2891 invalidate(); 2892 mLastFind = find; 2893 return result; 2894 } 2895 2896 /** 2897 * Start an ActionMode for finding text in this WebView. 2898 * @param text If non-null, will be the initial text to search for. 2899 * Otherwise, the last String searched for in this WebView will 2900 * be used to start. 2901 */ 2902 public void showFindDialog(String text) { 2903 mFindCallback = new FindActionModeCallback(mContext); 2904 setFindIsUp(true); 2905 mFindCallback.setWebView(this); 2906 View titleBar = mTitleBar; 2907 startActionMode(mFindCallback); 2908 if (text == null) { 2909 text = mLastFind; 2910 } 2911 if (text != null) { 2912 mFindCallback.setText(text); 2913 } 2914 } 2915 2916 /** 2917 * Keep track of the find callback so that we can remove its titlebar if 2918 * necessary. 2919 */ 2920 private FindActionModeCallback mFindCallback; 2921 2922 /** 2923 * Toggle whether the find dialog is showing, for both native and Java. 2924 */ 2925 private void setFindIsUp(boolean isUp) { 2926 mFindIsUp = isUp; 2927 if (0 == mNativeClass) return; // client isn't initialized 2928 nativeSetFindIsUp(isUp); 2929 } 2930 2931 /** 2932 * Return the index of the currently highlighted match. 2933 */ 2934 int findIndex() { 2935 if (0 == mNativeClass) return -1; 2936 return nativeFindIndex(); 2937 } 2938 2939 // Used to know whether the find dialog is open. Affects whether 2940 // or not we draw the highlights for matches. 2941 private boolean mFindIsUp; 2942 2943 // Keep track of the last string sent, so we can search again when find is 2944 // reopened. 2945 private String mLastFind; 2946 2947 /** 2948 * Return the first substring consisting of the address of a physical 2949 * location. Currently, only addresses in the United States are detected, 2950 * and consist of: 2951 * - a house number 2952 * - a street name 2953 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2954 * - a city name 2955 * - a state or territory, either spelled out or two-letter abbr. 2956 * - an optional 5 digit or 9 digit zip code. 2957 * 2958 * All names must be correctly capitalized, and the zip code, if present, 2959 * must be valid for the state. The street type must be a standard USPS 2960 * spelling or abbreviation. The state or territory must also be spelled 2961 * or abbreviated using USPS standards. The house number may not exceed 2962 * five digits. 2963 * @param addr The string to search for addresses. 2964 * 2965 * @return the address, or if no address is found, return null. 2966 */ 2967 public static String findAddress(String addr) { 2968 return findAddress(addr, false); 2969 } 2970 2971 /** 2972 * @hide 2973 * Return the first substring consisting of the address of a physical 2974 * location. Currently, only addresses in the United States are detected, 2975 * and consist of: 2976 * - a house number 2977 * - a street name 2978 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2979 * - a city name 2980 * - a state or territory, either spelled out or two-letter abbr. 2981 * - an optional 5 digit or 9 digit zip code. 2982 * 2983 * Names are optionally capitalized, and the zip code, if present, 2984 * must be valid for the state. The street type must be a standard USPS 2985 * spelling or abbreviation. The state or territory must also be spelled 2986 * or abbreviated using USPS standards. The house number may not exceed 2987 * five digits. 2988 * @param addr The string to search for addresses. 2989 * @param caseInsensitive addr Set to true to make search ignore case. 2990 * 2991 * @return the address, or if no address is found, return null. 2992 */ 2993 public static String findAddress(String addr, boolean caseInsensitive) { 2994 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2995 } 2996 2997 /* 2998 * Clear the highlighting surrounding text matches created by findAll. 2999 */ 3000 public void clearMatches() { 3001 if (mNativeClass == 0) 3002 return; 3003 nativeSetFindIsEmpty(); 3004 invalidate(); 3005 } 3006 3007 /** 3008 * Called when the find ActionMode ends. 3009 */ 3010 void notifyFindDialogDismissed() { 3011 mFindCallback = null; 3012 if (mWebViewCore == null) { 3013 return; 3014 } 3015 clearMatches(); 3016 setFindIsUp(false); 3017 // Now that the dialog has been removed, ensure that we scroll to a 3018 // location that is not beyond the end of the page. 3019 pinScrollTo(mScrollX, mScrollY, false, 0); 3020 invalidate(); 3021 } 3022 3023 /** 3024 * Query the document to see if it contains any image references. The 3025 * message object will be dispatched with arg1 being set to 1 if images 3026 * were found and 0 if the document does not reference any images. 3027 * @param response The message that will be dispatched with the result. 3028 */ 3029 public void documentHasImages(Message response) { 3030 if (response == null) { 3031 return; 3032 } 3033 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3034 } 3035 3036 /** 3037 * Request the scroller to abort any ongoing animation 3038 * 3039 * @hide 3040 */ 3041 public void stopScroll() { 3042 mScroller.forceFinished(true); 3043 mLastVelocity = 0; 3044 } 3045 3046 @Override 3047 public void computeScroll() { 3048 if (mScroller.computeScrollOffset()) { 3049 int oldX = mScrollX; 3050 int oldY = mScrollY; 3051 int x = mScroller.getCurrX(); 3052 int y = mScroller.getCurrY(); 3053 invalidate(); // So we draw again 3054 3055 if (!mScroller.isFinished()) { 3056 int rangeX = computeMaxScrollX(); 3057 int rangeY = computeMaxScrollY(); 3058 int overflingDistance = mOverflingDistance; 3059 3060 // Use the layer's scroll data if needed. 3061 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3062 oldX = mScrollingLayerRect.left; 3063 oldY = mScrollingLayerRect.top; 3064 rangeX = mScrollingLayerRect.right; 3065 rangeY = mScrollingLayerRect.bottom; 3066 // No overscrolling for layers. 3067 overflingDistance = 0; 3068 } 3069 3070 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3071 rangeX, rangeY, 3072 overflingDistance, overflingDistance, false); 3073 3074 if (mOverScrollGlow != null) { 3075 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3076 } 3077 } else { 3078 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3079 mScrollX = x; 3080 mScrollY = y; 3081 } else { 3082 // Update the layer position instead of WebView. 3083 nativeScrollLayer(mScrollingLayer, x, y); 3084 mScrollingLayerRect.left = x; 3085 mScrollingLayerRect.top = y; 3086 } 3087 abortAnimation(); 3088 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3089 WebViewCore.resumePriority(); 3090 if (!mSelectingText) { 3091 WebViewCore.resumeUpdatePicture(mWebViewCore); 3092 } 3093 } 3094 } else { 3095 super.computeScroll(); 3096 } 3097 } 3098 3099 private static int computeDuration(int dx, int dy) { 3100 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3101 int duration = distance * 1000 / STD_SPEED; 3102 return Math.min(duration, MAX_DURATION); 3103 } 3104 3105 // helper to pin the scrollBy parameters (already in view coordinates) 3106 // returns true if the scroll was changed 3107 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3108 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3109 } 3110 // helper to pin the scrollTo parameters (already in view coordinates) 3111 // returns true if the scroll was changed 3112 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3113 x = pinLocX(x); 3114 y = pinLocY(y); 3115 int dx = x - mScrollX; 3116 int dy = y - mScrollY; 3117 3118 if ((dx | dy) == 0) { 3119 return false; 3120 } 3121 abortAnimation(); 3122 if (animate) { 3123 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3124 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3125 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3126 awakenScrollBars(mScroller.getDuration()); 3127 invalidate(); 3128 } else { 3129 scrollTo(x, y); 3130 } 3131 return true; 3132 } 3133 3134 // Scale from content to view coordinates, and pin. 3135 // Also called by jni webview.cpp 3136 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3137 if (mDrawHistory) { 3138 // disallow WebView to change the scroll position as History Picture 3139 // is used in the view system. 3140 // TODO: as we switchOutDrawHistory when trackball or navigation 3141 // keys are hit, this should be safe. Right? 3142 return false; 3143 } 3144 cx = contentToViewDimension(cx); 3145 cy = contentToViewDimension(cy); 3146 if (mHeightCanMeasure) { 3147 // move our visible rect according to scroll request 3148 if (cy != 0) { 3149 Rect tempRect = new Rect(); 3150 calcOurVisibleRect(tempRect); 3151 tempRect.offset(cx, cy); 3152 requestRectangleOnScreen(tempRect); 3153 } 3154 // FIXME: We scroll horizontally no matter what because currently 3155 // ScrollView and ListView will not scroll horizontally. 3156 // FIXME: Why do we only scroll horizontally if there is no 3157 // vertical scroll? 3158// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3159 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3160 } else { 3161 return pinScrollBy(cx, cy, animate, 0); 3162 } 3163 } 3164 3165 /** 3166 * Called by CallbackProxy when the page starts loading. 3167 * @param url The URL of the page which has started loading. 3168 */ 3169 /* package */ void onPageStarted(String url) { 3170 // every time we start a new page, we want to reset the 3171 // WebView certificate: if the new site is secure, we 3172 // will reload it and get a new certificate set; 3173 // if the new site is not secure, the certificate must be 3174 // null, and that will be the case 3175 setCertificate(null); 3176 3177 // reset the flag since we set to true in if need after 3178 // loading is see onPageFinished(Url) 3179 mAccessibilityScriptInjected = false; 3180 } 3181 3182 /** 3183 * Called by CallbackProxy when the page finishes loading. 3184 * @param url The URL of the page which has finished loading. 3185 */ 3186 /* package */ void onPageFinished(String url) { 3187 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3188 // If the user is now on a different page, or has scrolled the page 3189 // past the point where the title bar is offscreen, ignore the 3190 // scroll request. 3191 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3192 && mScrollX == 0 && mScrollY == 0) { 3193 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3194 SLIDE_TITLE_DURATION); 3195 } 3196 mPageThatNeedsToSlideTitleBarOffScreen = null; 3197 } 3198 3199 injectAccessibilityForUrl(url); 3200 } 3201 3202 /** 3203 * This method injects accessibility in the loaded document if accessibility 3204 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3205 * If no URL specific script is found or JavaScript is disabled we fallback to 3206 * the default {@link AccessibilityInjector} implementation. 3207 * </p> 3208 * If the URL has the "axs" paramter set to 1 it has already done the 3209 * script injection so we do nothing. If the parameter is set to 0 3210 * the URL opts out accessibility script injection so we fall back to 3211 * the default {@link AccessibilityInjector}. 3212 * </p> 3213 * Note: If the user has not opted-in the accessibility script injection no scripts 3214 * are injected rather the default {@link AccessibilityInjector} implementation 3215 * is used. 3216 * 3217 * @param url The URL loaded by this {@link WebView}. 3218 */ 3219 private void injectAccessibilityForUrl(String url) { 3220 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3221 3222 if (!accessibilityManager.isEnabled()) { 3223 // it is possible that accessibility was turned off between reloads 3224 ensureAccessibilityScriptInjectorInstance(false); 3225 return; 3226 } 3227 3228 if (!getSettings().getJavaScriptEnabled()) { 3229 // no JS so we fallback to the basic buil-in support 3230 ensureAccessibilityScriptInjectorInstance(true); 3231 return; 3232 } 3233 3234 // check the URL "axs" parameter to choose appropriate action 3235 int axsParameterValue = getAxsUrlParameterValue(url); 3236 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3237 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3238 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3239 if (onDeviceScriptInjectionEnabled) { 3240 ensureAccessibilityScriptInjectorInstance(false); 3241 // neither script injected nor script injection opted out => we inject 3242 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3243 // TODO: Set this flag after successfull script injection. Maybe upon injection 3244 // the chooser should update the meta tag and we check it to declare success 3245 mAccessibilityScriptInjected = true; 3246 } else { 3247 // injection disabled so we fallback to the basic built-in support 3248 ensureAccessibilityScriptInjectorInstance(true); 3249 } 3250 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3251 // injection opted out so we fallback to the basic buil-in support 3252 ensureAccessibilityScriptInjectorInstance(true); 3253 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3254 ensureAccessibilityScriptInjectorInstance(false); 3255 // the URL provides accessibility but we still need to add our generic script 3256 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3257 } else { 3258 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3259 } 3260 } 3261 3262 /** 3263 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3264 * 3265 * @param present True to ensure an insance, false to ensure no instance. 3266 */ 3267 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3268 if (present && mAccessibilityInjector == null) { 3269 mAccessibilityInjector = new AccessibilityInjector(this); 3270 } else { 3271 mAccessibilityInjector = null; 3272 } 3273 } 3274 3275 /** 3276 * Gets the "axs" URL parameter value. 3277 * 3278 * @param url A url to fetch the paramter from. 3279 * @return The parameter value if such, -1 otherwise. 3280 */ 3281 private int getAxsUrlParameterValue(String url) { 3282 if (mMatchAxsUrlParameterPattern == null) { 3283 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3284 } 3285 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3286 if (matcher.find()) { 3287 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3288 return Integer.parseInt(keyValuePair.split("=")[1]); 3289 } 3290 return -1; 3291 } 3292 3293 /** 3294 * The URL of a page that sent a message to scroll the title bar off screen. 3295 * 3296 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3297 * title bar off the screen. Sometimes, the scroll position is set before 3298 * the page finishes loading. Rather than scrolling while the page is still 3299 * loading, keep track of the URL and new scroll position so we can perform 3300 * the scroll once the page finishes loading. 3301 */ 3302 private String mPageThatNeedsToSlideTitleBarOffScreen; 3303 3304 /** 3305 * The destination Y scroll position to be used when the page finishes 3306 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3307 */ 3308 private int mYDistanceToSlideTitleOffScreen; 3309 3310 // scale from content to view coordinates, and pin 3311 // return true if pin caused the final x/y different than the request cx/cy, 3312 // and a future scroll may reach the request cx/cy after our size has 3313 // changed 3314 // return false if the view scroll to the exact position as it is requested, 3315 // where negative numbers are taken to mean 0 3316 private boolean setContentScrollTo(int cx, int cy) { 3317 if (mDrawHistory) { 3318 // disallow WebView to change the scroll position as History Picture 3319 // is used in the view system. 3320 // One known case where this is called is that WebCore tries to 3321 // restore the scroll position. As history Picture already uses the 3322 // saved scroll position, it is ok to skip this. 3323 return false; 3324 } 3325 int vx; 3326 int vy; 3327 if ((cx | cy) == 0) { 3328 // If the page is being scrolled to (0,0), do not add in the title 3329 // bar's height, and simply scroll to (0,0). (The only other work 3330 // in contentToView_ is to multiply, so this would not change 0.) 3331 vx = 0; 3332 vy = 0; 3333 } else { 3334 vx = contentToViewX(cx); 3335 vy = contentToViewY(cy); 3336 } 3337// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3338// vx + " " + vy + "]"); 3339 // Some mobile sites attempt to scroll the title bar off the page by 3340 // scrolling to (0,1). If we are at the top left corner of the 3341 // page, assume this is an attempt to scroll off the title bar, and 3342 // animate the title bar off screen slowly enough that the user can see 3343 // it. 3344 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3345 && mTitleBar != null) { 3346 // FIXME: 100 should be defined somewhere as our max progress. 3347 if (getProgress() < 100) { 3348 // Wait to scroll the title bar off screen until the page has 3349 // finished loading. Keep track of the URL and the destination 3350 // Y position 3351 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3352 mYDistanceToSlideTitleOffScreen = vy; 3353 } else { 3354 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3355 } 3356 // Since we are animating, we have not yet reached the desired 3357 // scroll position. Do not return true to request another attempt 3358 return false; 3359 } 3360 pinScrollTo(vx, vy, false, 0); 3361 // If the request was to scroll to a negative coordinate, treat it as if 3362 // it was a request to scroll to 0 3363 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3364 return true; 3365 } else { 3366 return false; 3367 } 3368 } 3369 3370 // scale from content to view coordinates, and pin 3371 private void spawnContentScrollTo(int cx, int cy) { 3372 if (mDrawHistory) { 3373 // disallow WebView to change the scroll position as History Picture 3374 // is used in the view system. 3375 return; 3376 } 3377 int vx = contentToViewX(cx); 3378 int vy = contentToViewY(cy); 3379 pinScrollTo(vx, vy, true, 0); 3380 } 3381 3382 /** 3383 * These are from webkit, and are in content coordinate system (unzoomed) 3384 */ 3385 private void contentSizeChanged(boolean updateLayout) { 3386 // suppress 0,0 since we usually see real dimensions soon after 3387 // this avoids drawing the prev content in a funny place. If we find a 3388 // way to consolidate these notifications, this check may become 3389 // obsolete 3390 if ((mContentWidth | mContentHeight) == 0) { 3391 return; 3392 } 3393 3394 if (mHeightCanMeasure) { 3395 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3396 || updateLayout) { 3397 requestLayout(); 3398 } 3399 } else if (mWidthCanMeasure) { 3400 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3401 || updateLayout) { 3402 requestLayout(); 3403 } 3404 } else { 3405 // If we don't request a layout, try to send our view size to the 3406 // native side to ensure that WebCore has the correct dimensions. 3407 sendViewSizeZoom(false); 3408 } 3409 } 3410 3411 /** 3412 * Set the WebViewClient that will receive various notifications and 3413 * requests. This will replace the current handler. 3414 * @param client An implementation of WebViewClient. 3415 */ 3416 public void setWebViewClient(WebViewClient client) { 3417 mCallbackProxy.setWebViewClient(client); 3418 } 3419 3420 /** 3421 * Gets the WebViewClient 3422 * @return the current WebViewClient instance. 3423 * 3424 *@hide pending API council approval. 3425 */ 3426 public WebViewClient getWebViewClient() { 3427 return mCallbackProxy.getWebViewClient(); 3428 } 3429 3430 /** 3431 * Register the interface to be used when content can not be handled by 3432 * the rendering engine, and should be downloaded instead. This will replace 3433 * the current handler. 3434 * @param listener An implementation of DownloadListener. 3435 */ 3436 public void setDownloadListener(DownloadListener listener) { 3437 mCallbackProxy.setDownloadListener(listener); 3438 } 3439 3440 /** 3441 * Set the chrome handler. This is an implementation of WebChromeClient for 3442 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3443 * This will replace the current handler. 3444 * @param client An implementation of WebChromeClient. 3445 */ 3446 public void setWebChromeClient(WebChromeClient client) { 3447 mCallbackProxy.setWebChromeClient(client); 3448 } 3449 3450 /** 3451 * Gets the chrome handler. 3452 * @return the current WebChromeClient instance. 3453 * 3454 * @hide API council approval. 3455 */ 3456 public WebChromeClient getWebChromeClient() { 3457 return mCallbackProxy.getWebChromeClient(); 3458 } 3459 3460 /** 3461 * Set the back/forward list client. This is an implementation of 3462 * WebBackForwardListClient for handling new items and changes in the 3463 * history index. 3464 * @param client An implementation of WebBackForwardListClient. 3465 * {@hide} 3466 */ 3467 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3468 mCallbackProxy.setWebBackForwardListClient(client); 3469 } 3470 3471 /** 3472 * Gets the WebBackForwardListClient. 3473 * {@hide} 3474 */ 3475 public WebBackForwardListClient getWebBackForwardListClient() { 3476 return mCallbackProxy.getWebBackForwardListClient(); 3477 } 3478 3479 /** 3480 * Set the Picture listener. This is an interface used to receive 3481 * notifications of a new Picture. 3482 * @param listener An implementation of WebView.PictureListener. 3483 */ 3484 public void setPictureListener(PictureListener listener) { 3485 mPictureListener = listener; 3486 } 3487 3488 /** 3489 * {@hide} 3490 */ 3491 /* FIXME: Debug only! Remove for SDK! */ 3492 public void externalRepresentation(Message callback) { 3493 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3494 } 3495 3496 /** 3497 * {@hide} 3498 */ 3499 /* FIXME: Debug only! Remove for SDK! */ 3500 public void documentAsText(Message callback) { 3501 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3502 } 3503 3504 /** 3505 * Use this function to bind an object to JavaScript so that the 3506 * methods can be accessed from JavaScript. 3507 * <p><strong>IMPORTANT:</strong> 3508 * <ul> 3509 * <li> Using addJavascriptInterface() allows JavaScript to control your 3510 * application. This can be a very useful feature or a dangerous security 3511 * issue. When the HTML in the WebView is untrustworthy (for example, part 3512 * or all of the HTML is provided by some person or process), then an 3513 * attacker could inject HTML that will execute your code and possibly any 3514 * code of the attacker's choosing.<br> 3515 * Do not use addJavascriptInterface() unless all of the HTML in this 3516 * WebView was written by you.</li> 3517 * <li> The Java object that is bound runs in another thread and not in 3518 * the thread that it was constructed in.</li> 3519 * </ul></p> 3520 * @param obj The class instance to bind to JavaScript, null instances are 3521 * ignored. 3522 * @param interfaceName The name to used to expose the instance in 3523 * JavaScript. 3524 */ 3525 public void addJavascriptInterface(Object obj, String interfaceName) { 3526 if (obj == null) { 3527 return; 3528 } 3529 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3530 arg.mObject = obj; 3531 arg.mInterfaceName = interfaceName; 3532 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3533 } 3534 3535 /** 3536 * Removes a previously added JavaScript interface with the given name. 3537 * @param interfaceName The name of the interface to remove. 3538 */ 3539 public void removeJavascriptInterface(String interfaceName) { 3540 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3541 arg.mInterfaceName = interfaceName; 3542 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3543 } 3544 3545 /** 3546 * Return the WebSettings object used to control the settings for this 3547 * WebView. 3548 * @return A WebSettings object that can be used to control this WebView's 3549 * settings. 3550 */ 3551 public WebSettings getSettings() { 3552 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3553 } 3554 3555 /** 3556 * Return the list of currently loaded plugins. 3557 * @return The list of currently loaded plugins. 3558 * 3559 * @deprecated This was used for Gears, which has been deprecated. 3560 */ 3561 @Deprecated 3562 public static synchronized PluginList getPluginList() { 3563 return new PluginList(); 3564 } 3565 3566 /** 3567 * @deprecated This was used for Gears, which has been deprecated. 3568 */ 3569 @Deprecated 3570 public void refreshPlugins(boolean reloadOpenPages) { } 3571 3572 //------------------------------------------------------------------------- 3573 // Override View methods 3574 //------------------------------------------------------------------------- 3575 3576 @Override 3577 protected void finalize() throws Throwable { 3578 try { 3579 destroy(); 3580 } finally { 3581 super.finalize(); 3582 } 3583 } 3584 3585 @Override 3586 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3587 if (child == mTitleBar) { 3588 // When drawing the title bar, move it horizontally to always show 3589 // at the top of the WebView. 3590 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3591 int newTop = Math.min(0, mScrollY); 3592 mTitleBar.setBottom(newTop + getTitleHeight()); 3593 mTitleBar.setTop(newTop); 3594 } 3595 return super.drawChild(canvas, child, drawingTime); 3596 } 3597 3598 private void drawContent(Canvas canvas) { 3599 // Update the buttons in the picture, so when we draw the picture 3600 // to the screen, they are in the correct state. 3601 // Tell the native side if user is a) touching the screen, 3602 // b) pressing the trackball down, or c) pressing the enter key 3603 // If the cursor is on a button, we need to draw it in the pressed 3604 // state. 3605 // If mNativeClass is 0, we should not reach here, so we do not 3606 // need to check it again. 3607 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3608 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3609 || mTrackballDown || mGotCenterDown, false); 3610 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3611 } 3612 3613 /** 3614 * Draw the background when beyond bounds 3615 * @param canvas Canvas to draw into 3616 */ 3617 private void drawOverScrollBackground(Canvas canvas) { 3618 if (mOverScrollBackground == null) { 3619 mOverScrollBackground = new Paint(); 3620 Bitmap bm = BitmapFactory.decodeResource( 3621 mContext.getResources(), 3622 com.android.internal.R.drawable.status_bar_background); 3623 mOverScrollBackground.setShader(new BitmapShader(bm, 3624 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3625 mOverScrollBorder = new Paint(); 3626 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3627 mOverScrollBorder.setStrokeWidth(0); 3628 mOverScrollBorder.setColor(0xffbbbbbb); 3629 } 3630 3631 int top = 0; 3632 int right = computeRealHorizontalScrollRange(); 3633 int bottom = top + computeRealVerticalScrollRange(); 3634 // first draw the background and anchor to the top of the view 3635 canvas.save(); 3636 canvas.translate(mScrollX, mScrollY); 3637 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3638 - mScrollY, Region.Op.DIFFERENCE); 3639 canvas.drawPaint(mOverScrollBackground); 3640 canvas.restore(); 3641 // then draw the border 3642 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3643 // next clip the region for the content 3644 canvas.clipRect(0, top, right, bottom); 3645 } 3646 3647 @Override 3648 protected void onDraw(Canvas canvas) { 3649 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3650 if (mNativeClass == 0) { 3651 return; 3652 } 3653 3654 // if both mContentWidth and mContentHeight are 0, it means there is no 3655 // valid Picture passed to WebView yet. This can happen when WebView 3656 // just starts. Draw the background and return. 3657 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3658 canvas.drawColor(mBackgroundColor); 3659 return; 3660 } 3661 3662 int saveCount = canvas.save(); 3663 if (mInOverScrollMode && !getSettings() 3664 .getUseWebViewBackgroundForOverscrollBackground()) { 3665 drawOverScrollBackground(canvas); 3666 } 3667 if (mTitleBar != null) { 3668 canvas.translate(0, (int) mTitleBar.getHeight()); 3669 } 3670 drawContent(canvas); 3671 canvas.restoreToCount(saveCount); 3672 3673 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3674 invalidate(); 3675 } 3676 if (inEditingMode()) { 3677 mWebTextView.onDrawSubstitute(); 3678 } 3679 mWebViewCore.signalRepaintDone(); 3680 3681 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3682 invalidate(); 3683 } 3684 3685 // paint the highlight in the end 3686 if (!mTouchHighlightRegion.isEmpty()) { 3687 if (mTouchHightlightPaint == null) { 3688 mTouchHightlightPaint = new Paint(); 3689 mTouchHightlightPaint.setColor(mHightlightColor); 3690 mTouchHightlightPaint.setAntiAlias(true); 3691 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3692 TOUCH_HIGHLIGHT_ARC)); 3693 } 3694 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3695 mTouchHightlightPaint); 3696 } 3697 if (DEBUG_TOUCH_HIGHLIGHT) { 3698 if (getSettings().getNavDump()) { 3699 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3700 if (mTouchCrossHairColor == null) { 3701 mTouchCrossHairColor = new Paint(); 3702 mTouchCrossHairColor.setColor(Color.RED); 3703 } 3704 canvas.drawLine(mTouchHighlightX - mNavSlop, 3705 mTouchHighlightY - mNavSlop, mTouchHighlightX 3706 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3707 + 1, mTouchCrossHairColor); 3708 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3709 mTouchHighlightY - mNavSlop, mTouchHighlightX 3710 - mNavSlop, 3711 mTouchHighlightY + mNavSlop + 1, 3712 mTouchCrossHairColor); 3713 } 3714 } 3715 } 3716 } 3717 3718 private void removeTouchHighlight(boolean removePendingMessage) { 3719 if (removePendingMessage) { 3720 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3721 } 3722 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3723 } 3724 3725 @Override 3726 public void setLayoutParams(ViewGroup.LayoutParams params) { 3727 if (params.height == LayoutParams.WRAP_CONTENT) { 3728 mWrapContent = true; 3729 } 3730 super.setLayoutParams(params); 3731 } 3732 3733 @Override 3734 public boolean performLongClick() { 3735 // performLongClick() is the result of a delayed message. If we switch 3736 // to windows overview, the WebView will be temporarily removed from the 3737 // view system. In that case, do nothing. 3738 if (getParent() == null) return false; 3739 3740 // A multi-finger gesture can look like a long press; make sure we don't take 3741 // long press actions if we're scaling. 3742 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3743 if (detector != null && detector.isInProgress()) { 3744 return false; 3745 } 3746 3747 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3748 // Send the click so that the textfield is in focus 3749 centerKeyPressOnTextField(); 3750 rebuildWebTextView(); 3751 } else { 3752 clearTextEntry(); 3753 } 3754 if (inEditingMode()) { 3755 // Since we just called rebuildWebTextView, the layout is not set 3756 // properly. Update it so it can correctly find the word to select. 3757 mWebTextView.ensureLayout(); 3758 // Provide a touch down event to WebTextView, which will allow it 3759 // to store the location to use in performLongClick. 3760 AbsoluteLayout.LayoutParams params 3761 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 3762 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 3763 mLastTouchTime, MotionEvent.ACTION_DOWN, 3764 mLastTouchX - params.x + mScrollX, 3765 mLastTouchY - params.y + mScrollY, 0); 3766 mWebTextView.dispatchTouchEvent(fake); 3767 return mWebTextView.performLongClick(); 3768 } 3769 if (mSelectingText) return false; // long click does nothing on selection 3770 /* if long click brings up a context menu, the super function 3771 * returns true and we're done. Otherwise, nothing happened when 3772 * the user clicked. */ 3773 if (super.performLongClick()) { 3774 return true; 3775 } 3776 /* In the case where the application hasn't already handled the long 3777 * click action, look for a word under the click. If one is found, 3778 * animate the text selection into view. 3779 * FIXME: no animation code yet */ 3780 return selectText(); 3781 } 3782 3783 /** 3784 * Select the word at the last click point. 3785 * 3786 * @hide pending API council approval 3787 */ 3788 public boolean selectText() { 3789 int x = viewToContentX((int) mLastTouchX + mScrollX); 3790 int y = viewToContentY((int) mLastTouchY + mScrollY); 3791 setUpSelect(); 3792 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3793 nativeSetExtendSelection(); 3794 mDrawSelectionPointer = false; 3795 mSelectionStarted = true; 3796 mTouchMode = TOUCH_DRAG_MODE; 3797 return true; 3798 } 3799 selectionDone(); 3800 return false; 3801 } 3802 3803 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3804 3805 @Override 3806 protected void onConfigurationChanged(Configuration newConfig) { 3807 if (mSelectingText && mOrientation != newConfig.orientation) { 3808 selectionDone(); 3809 } 3810 mOrientation = newConfig.orientation; 3811 } 3812 3813 /** 3814 * Keep track of the Callback so we can end its ActionMode or remove its 3815 * titlebar. 3816 */ 3817 private SelectActionModeCallback mSelectCallback; 3818 3819 /** 3820 * Check to see if the focused textfield/textarea is still on screen. If it 3821 * is, update the the dimensions and location of WebTextView. Otherwise, 3822 * remove the WebTextView. Should be called when the zoom level changes. 3823 * @param allowIntersect Whether to consider the textfield/textarea on 3824 * screen if it only intersects the screen (as opposed to being 3825 * completely on screen). 3826 * @return boolean True if the textfield/textarea is still on screen and the 3827 * dimensions/location of WebTextView have been updated. 3828 */ 3829 private boolean didUpdateWebTextViewDimensions(boolean allowIntersect) { 3830 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3831 Rect vBox = contentToViewRect(contentBounds); 3832 Rect visibleRect = new Rect(); 3833 calcOurVisibleRect(visibleRect); 3834 // If the textfield is on screen, place the WebTextView in 3835 // its new place, accounting for our new scroll/zoom values, 3836 // and adjust its textsize. 3837 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3838 : visibleRect.contains(vBox)) { 3839 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3840 vBox.height()); 3841 mWebTextView.updateTextSize(); 3842 updateWebTextViewPadding(); 3843 return true; 3844 } else { 3845 // The textfield is now off screen. The user probably 3846 // was not zooming to see the textfield better. Remove 3847 // the WebTextView. If the user types a key, and the 3848 // textfield is still in focus, we will reconstruct 3849 // the WebTextView and scroll it back on screen. 3850 mWebTextView.remove(); 3851 return false; 3852 } 3853 } 3854 3855 void setBaseLayer(int layer, Rect invalRect) { 3856 if (mNativeClass == 0) 3857 return; 3858 if (invalRect == null) { 3859 Rect rect = new Rect(0, 0, mContentWidth, mContentHeight); 3860 nativeSetBaseLayer(layer, rect); 3861 } else { 3862 nativeSetBaseLayer(layer, invalRect); 3863 } 3864 } 3865 3866 private void onZoomAnimationStart() { 3867 // If it is in password mode, turn it off so it does not draw misplaced. 3868 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3869 mWebTextView.setInPassword(false); 3870 } 3871 } 3872 3873 private void onZoomAnimationEnd() { 3874 // adjust the edit text view if needed 3875 if (inEditingMode() && didUpdateWebTextViewDimensions(false) 3876 && nativeFocusCandidateIsPassword()) { 3877 // If it is a password field, start drawing the WebTextView once 3878 // again. 3879 mWebTextView.setInPassword(true); 3880 } 3881 } 3882 3883 void onFixedLengthZoomAnimationStart() { 3884 WebViewCore.pauseUpdatePicture(getWebViewCore()); 3885 onZoomAnimationStart(); 3886 } 3887 3888 void onFixedLengthZoomAnimationEnd() { 3889 if (!mSelectingText) { 3890 WebViewCore.resumeUpdatePicture(mWebViewCore); 3891 } 3892 onZoomAnimationEnd(); 3893 } 3894 3895 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 3896 Paint.DITHER_FLAG | 3897 Paint.SUBPIXEL_TEXT_FLAG; 3898 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 3899 Paint.DITHER_FLAG; 3900 3901 private final DrawFilter mZoomFilter = 3902 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 3903 // If we need to trade better quality for speed, set mScrollFilter to null 3904 private final DrawFilter mScrollFilter = 3905 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 3906 3907 private void drawCoreAndCursorRing(Canvas canvas, int color, 3908 boolean drawCursorRing) { 3909 if (mDrawHistory) { 3910 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3911 canvas.drawPicture(mHistoryPicture); 3912 return; 3913 } 3914 if (mNativeClass == 0) return; 3915 3916 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 3917 boolean animateScroll = ((!mScroller.isFinished() 3918 || mVelocityTracker != null) 3919 && (mTouchMode != TOUCH_DRAG_MODE || 3920 mHeldMotionless != MOTIONLESS_TRUE)) 3921 || mDeferTouchMode == TOUCH_DRAG_MODE; 3922 if (mTouchMode == TOUCH_DRAG_MODE) { 3923 if (mHeldMotionless == MOTIONLESS_PENDING) { 3924 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3925 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3926 mHeldMotionless = MOTIONLESS_FALSE; 3927 } 3928 if (mHeldMotionless == MOTIONLESS_FALSE) { 3929 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3930 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3931 mHeldMotionless = MOTIONLESS_PENDING; 3932 } 3933 } 3934 if (animateZoom) { 3935 mZoomManager.animateZoom(canvas); 3936 } else { 3937 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3938 } 3939 3940 boolean UIAnimationsRunning = false; 3941 // Currently for each draw we compute the animation values; 3942 // We may in the future decide to do that independently. 3943 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3944 UIAnimationsRunning = true; 3945 // If we have unfinished (or unstarted) animations, 3946 // we ask for a repaint. 3947 invalidate(); 3948 } 3949 3950 // decide which adornments to draw 3951 int extras = DRAW_EXTRAS_NONE; 3952 if (mFindIsUp) { 3953 extras = DRAW_EXTRAS_FIND; 3954 } else if (mSelectingText) { 3955 extras = DRAW_EXTRAS_SELECTION; 3956 nativeSetSelectionPointer(mDrawSelectionPointer, 3957 mZoomManager.getInvScale(), 3958 mSelectX, mSelectY - getTitleHeight()); 3959 } else if (drawCursorRing) { 3960 extras = DRAW_EXTRAS_CURSOR_RING; 3961 } 3962 if (DebugFlags.WEB_VIEW) { 3963 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 3964 + " mSelectingText=" + mSelectingText 3965 + " nativePageShouldHandleShiftAndArrows()=" 3966 + nativePageShouldHandleShiftAndArrows() 3967 + " animateZoom=" + animateZoom 3968 + " extras=" + extras); 3969 } 3970 3971 if (canvas.isHardwareAccelerated()) { 3972 try { 3973 if (canvas.acquireContext()) { 3974 Rect rect = new Rect(mGLRectViewport.left, 3975 mGLRectViewport.top, 3976 mGLRectViewport.right, 3977 mGLRectViewport.bottom 3978 - getVisibleTitleHeight()); 3979 if (nativeDrawGL(rect, getScale(), extras)) { 3980 invalidate(); 3981 } 3982 } 3983 } finally { 3984 canvas.releaseContext(); 3985 } 3986 } else { 3987 DrawFilter df = null; 3988 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 3989 df = mZoomFilter; 3990 } else if (animateScroll) { 3991 df = mScrollFilter; 3992 } 3993 canvas.setDrawFilter(df); 3994 int content = nativeDraw(canvas, color, extras, true); 3995 canvas.setDrawFilter(null); 3996 if (content != 0) { 3997 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 3998 } 3999 } 4000 4001 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4002 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4003 mTouchMode = TOUCH_SHORTPRESS_MODE; 4004 } 4005 } 4006 if (mFocusSizeChanged) { 4007 mFocusSizeChanged = false; 4008 // If we are zooming, this will get handled above, when the zoom 4009 // finishes. We also do not need to do this unless the WebTextView 4010 // is showing. 4011 if (!animateZoom && inEditingMode()) { 4012 didUpdateWebTextViewDimensions(true); 4013 } 4014 } 4015 } 4016 4017 // draw history 4018 private boolean mDrawHistory = false; 4019 private Picture mHistoryPicture = null; 4020 private int mHistoryWidth = 0; 4021 private int mHistoryHeight = 0; 4022 4023 // Only check the flag, can be called from WebCore thread 4024 boolean drawHistory() { 4025 return mDrawHistory; 4026 } 4027 4028 int getHistoryPictureWidth() { 4029 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4030 } 4031 4032 // Should only be called in UI thread 4033 void switchOutDrawHistory() { 4034 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4035 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4036 mDrawHistory = false; 4037 mHistoryPicture = null; 4038 invalidate(); 4039 int oldScrollX = mScrollX; 4040 int oldScrollY = mScrollY; 4041 mScrollX = pinLocX(mScrollX); 4042 mScrollY = pinLocY(mScrollY); 4043 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4044 mUserScroll = false; 4045 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 4046 oldScrollY); 4047 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4048 } else { 4049 sendOurVisibleRect(); 4050 } 4051 } 4052 } 4053 4054 WebViewCore.CursorData cursorData() { 4055 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4056 result.mMoveGeneration = nativeMoveGeneration(); 4057 result.mFrame = nativeCursorFramePointer(); 4058 Point position = nativeCursorPosition(); 4059 result.mX = position.x; 4060 result.mY = position.y; 4061 return result; 4062 } 4063 4064 /** 4065 * Delete text from start to end in the focused textfield. If there is no 4066 * focus, or if start == end, silently fail. If start and end are out of 4067 * order, swap them. 4068 * @param start Beginning of selection to delete. 4069 * @param end End of selection to delete. 4070 */ 4071 /* package */ void deleteSelection(int start, int end) { 4072 mTextGeneration++; 4073 WebViewCore.TextSelectionData data 4074 = new WebViewCore.TextSelectionData(start, end); 4075 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4076 data); 4077 } 4078 4079 /** 4080 * Set the selection to (start, end) in the focused textfield. If start and 4081 * end are out of order, swap them. 4082 * @param start Beginning of selection. 4083 * @param end End of selection. 4084 */ 4085 /* package */ void setSelection(int start, int end) { 4086 if (mWebViewCore != null) { 4087 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4088 } 4089 } 4090 4091 @Override 4092 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4093 InputConnection connection = super.onCreateInputConnection(outAttrs); 4094 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4095 return connection; 4096 } 4097 4098 /** 4099 * Called in response to a message from webkit telling us that the soft 4100 * keyboard should be launched. 4101 */ 4102 private void displaySoftKeyboard(boolean isTextView) { 4103 InputMethodManager imm = (InputMethodManager) 4104 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4105 4106 // bring it back to the default level scale so that user can enter text 4107 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4108 if (zoom) { 4109 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4110 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4111 } 4112 if (isTextView) { 4113 rebuildWebTextView(); 4114 if (inEditingMode()) { 4115 imm.showSoftInput(mWebTextView, 0); 4116 if (zoom) { 4117 didUpdateWebTextViewDimensions(true); 4118 } 4119 return; 4120 } 4121 } 4122 // Used by plugins and contentEditable. 4123 // Also used if the navigation cache is out of date, and 4124 // does not recognize that a textfield is in focus. In that 4125 // case, use WebView as the targeted view. 4126 // see http://b/issue?id=2457459 4127 imm.showSoftInput(this, 0); 4128 } 4129 4130 // Called by WebKit to instruct the UI to hide the keyboard 4131 private void hideSoftKeyboard() { 4132 InputMethodManager imm = InputMethodManager.peekInstance(); 4133 if (imm != null && (imm.isActive(this) 4134 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4135 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4136 } 4137 } 4138 4139 /* 4140 * This method checks the current focus and cursor and potentially rebuilds 4141 * mWebTextView to have the appropriate properties, such as password, 4142 * multiline, and what text it contains. It also removes it if necessary. 4143 */ 4144 /* package */ void rebuildWebTextView() { 4145 // If the WebView does not have focus, do nothing until it gains focus. 4146 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4147 return; 4148 } 4149 boolean alreadyThere = inEditingMode(); 4150 // inEditingMode can only return true if mWebTextView is non-null, 4151 // so we can safely call remove() if (alreadyThere) 4152 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4153 if (alreadyThere) { 4154 mWebTextView.remove(); 4155 } 4156 return; 4157 } 4158 // At this point, we know we have found an input field, so go ahead 4159 // and create the WebTextView if necessary. 4160 if (mWebTextView == null) { 4161 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4162 // Initialize our generation number. 4163 mTextGeneration = 0; 4164 } 4165 mWebTextView.updateTextSize(); 4166 Rect visibleRect = new Rect(); 4167 calcOurContentVisibleRect(visibleRect); 4168 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4169 // should be in content coordinates. 4170 Rect bounds = nativeFocusCandidateNodeBounds(); 4171 Rect vBox = contentToViewRect(bounds); 4172 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4173 if (!Rect.intersects(bounds, visibleRect)) { 4174 mWebTextView.bringIntoView(); 4175 } 4176 String text = nativeFocusCandidateText(); 4177 int nodePointer = nativeFocusCandidatePointer(); 4178 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4179 // It is possible that we have the same textfield, but it has moved, 4180 // i.e. In the case of opening/closing the screen. 4181 // In that case, we need to set the dimensions, but not the other 4182 // aspects. 4183 // If the text has been changed by webkit, update it. However, if 4184 // there has been more UI text input, ignore it. We will receive 4185 // another update when that text is recognized. 4186 if (text != null && !text.equals(mWebTextView.getText().toString()) 4187 && nativeTextGeneration() == mTextGeneration) { 4188 mWebTextView.setTextAndKeepSelection(text); 4189 } 4190 } else { 4191 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4192 Gravity.RIGHT : Gravity.NO_GRAVITY); 4193 // This needs to be called before setType, which may call 4194 // requestFormData, and it needs to have the correct nodePointer. 4195 mWebTextView.setNodePointer(nodePointer); 4196 mWebTextView.setType(nativeFocusCandidateType()); 4197 updateWebTextViewPadding(); 4198 if (null == text) { 4199 if (DebugFlags.WEB_VIEW) { 4200 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4201 } 4202 text = ""; 4203 } 4204 mWebTextView.setTextAndKeepSelection(text); 4205 InputMethodManager imm = InputMethodManager.peekInstance(); 4206 if (imm != null && imm.isActive(mWebTextView)) { 4207 imm.restartInput(mWebTextView); 4208 } 4209 } 4210 if (isFocused()) { 4211 mWebTextView.requestFocus(); 4212 } 4213 } 4214 4215 /** 4216 * Update the padding of mWebTextView based on the native textfield/textarea 4217 */ 4218 void updateWebTextViewPadding() { 4219 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4220 if (paddingRect != null) { 4221 // Use contentToViewDimension since these are the dimensions of 4222 // the padding. 4223 mWebTextView.setPadding( 4224 contentToViewDimension(paddingRect.left), 4225 contentToViewDimension(paddingRect.top), 4226 contentToViewDimension(paddingRect.right), 4227 contentToViewDimension(paddingRect.bottom)); 4228 } 4229 } 4230 4231 /** 4232 * Tell webkit to put the cursor on screen. 4233 */ 4234 /* package */ void revealSelection() { 4235 if (mWebViewCore != null) { 4236 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4237 } 4238 } 4239 4240 /** 4241 * Called by WebTextView to find saved form data associated with the 4242 * textfield 4243 * @param name Name of the textfield. 4244 * @param nodePointer Pointer to the node of the textfield, so it can be 4245 * compared to the currently focused textfield when the data is 4246 * retrieved. 4247 * @param autoFillable true if WebKit has determined this field is part of 4248 * a form that can be auto filled. 4249 */ 4250 /* package */ void requestFormData(String name, int nodePointer, boolean autoFillable) { 4251 if (mWebViewCore.getSettings().getSaveFormData()) { 4252 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4253 update.arg1 = nodePointer; 4254 RequestFormData updater = new RequestFormData(name, getUrl(), 4255 update, autoFillable); 4256 Thread t = new Thread(updater); 4257 t.start(); 4258 } 4259 } 4260 4261 /** 4262 * Pass a message to find out the <label> associated with the <input> 4263 * identified by nodePointer 4264 * @param framePointer Pointer to the frame containing the <input> node 4265 * @param nodePointer Pointer to the node for which a <label> is desired. 4266 */ 4267 /* package */ void requestLabel(int framePointer, int nodePointer) { 4268 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4269 nodePointer); 4270 } 4271 4272 /* 4273 * This class requests an Adapter for the WebTextView which shows past 4274 * entries stored in the database. It is a Runnable so that it can be done 4275 * in its own thread, without slowing down the UI. 4276 */ 4277 private class RequestFormData implements Runnable { 4278 private String mName; 4279 private String mUrl; 4280 private Message mUpdateMessage; 4281 private boolean mAutoFillable; 4282 4283 public RequestFormData(String name, String url, Message msg, boolean autoFillable) { 4284 mName = name; 4285 mUrl = url; 4286 mUpdateMessage = msg; 4287 mAutoFillable = autoFillable; 4288 } 4289 4290 public void run() { 4291 ArrayList<String> pastEntries = new ArrayList(); 4292 4293 if (mAutoFillable) { 4294 // Note that code inside the adapter click handler in WebTextView depends 4295 // on the AutoFill item being at the top of the drop down list. If you change 4296 // the order, make sure to do it there too! 4297 WebSettings settings = getSettings(); 4298 if (settings != null && settings.getAutoFillProfile() != null) { 4299 pastEntries.add(getResources().getText( 4300 com.android.internal.R.string.autofill_this_form).toString() + 4301 " " + 4302 mAutoFillData.getPreviewString()); 4303 mWebTextView.setAutoFillProfileIsSet(true); 4304 } else { 4305 // There is no autofill profile set up yet, so add an option that 4306 // will invite the user to set their profile up. 4307 pastEntries.add(getResources().getText( 4308 com.android.internal.R.string.setup_autofill).toString()); 4309 mWebTextView.setAutoFillProfileIsSet(false); 4310 } 4311 } 4312 4313 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4314 4315 if (pastEntries.size() > 0) { 4316 AutoCompleteAdapter adapter = new 4317 AutoCompleteAdapter(mContext, pastEntries); 4318 mUpdateMessage.obj = adapter; 4319 mUpdateMessage.sendToTarget(); 4320 } 4321 } 4322 } 4323 4324 /** 4325 * Dump the display tree to "/sdcard/displayTree.txt" 4326 * 4327 * @hide debug only 4328 */ 4329 public void dumpDisplayTree() { 4330 nativeDumpDisplayTree(getUrl()); 4331 } 4332 4333 /** 4334 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4335 * "/sdcard/domTree.txt" 4336 * 4337 * @hide debug only 4338 */ 4339 public void dumpDomTree(boolean toFile) { 4340 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4341 } 4342 4343 /** 4344 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4345 * to "/sdcard/renderTree.txt" 4346 * 4347 * @hide debug only 4348 */ 4349 public void dumpRenderTree(boolean toFile) { 4350 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4351 } 4352 4353 /** 4354 * Called by DRT on UI thread, need to proxy to WebCore thread. 4355 * 4356 * @hide debug only 4357 */ 4358 public void useMockDeviceOrientation() { 4359 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4360 } 4361 4362 /** 4363 * Called by DRT on WebCore thread. 4364 * 4365 * @hide debug only 4366 */ 4367 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4368 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4369 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4370 canProvideGamma, gamma); 4371 } 4372 4373 /** 4374 * Dump the V8 counters to standard output. 4375 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4376 * true. Otherwise, this will do nothing. 4377 * 4378 * @hide debug only 4379 */ 4380 public void dumpV8Counters() { 4381 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4382 } 4383 4384 // This is used to determine long press with the center key. Does not 4385 // affect long press with the trackball/touch. 4386 private boolean mGotCenterDown = false; 4387 4388 @Override 4389 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4390 // send complex characters to webkit for use by JS and plugins 4391 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4392 // pass the key to DOM 4393 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4394 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4395 // return true as DOM handles the key 4396 return true; 4397 } 4398 return false; 4399 } 4400 4401 @Override 4402 public boolean onKeyDown(int keyCode, KeyEvent event) { 4403 if (DebugFlags.WEB_VIEW) { 4404 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4405 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4406 } 4407 4408 if (mNativeClass == 0) { 4409 return false; 4410 } 4411 4412 // do this hack up front, so it always works, regardless of touch-mode 4413 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4414 mAutoRedraw = !mAutoRedraw; 4415 if (mAutoRedraw) { 4416 invalidate(); 4417 } 4418 return true; 4419 } 4420 4421 // Bubble up the key event if 4422 // 1. it is a system key; or 4423 // 2. the host application wants to handle it; 4424 // 3. the accessibility injector is present and wants to handle it; 4425 if (event.isSystem() 4426 || mCallbackProxy.uiOverrideKeyEvent(event) 4427 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4428 return false; 4429 } 4430 4431 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4432 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4433 if (!pageShouldHandleShiftAndArrows() && !nativeCursorWantsKeyEvents() 4434 && !mSelectingText) { 4435 setUpSelect(); 4436 } 4437 } 4438 4439 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4440 pageUp(false); 4441 return true; 4442 } 4443 4444 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4445 pageDown(false); 4446 return true; 4447 } 4448 4449 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4450 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4451 switchOutDrawHistory(); 4452 if (pageShouldHandleShiftAndArrows()) { 4453 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4454 return true; 4455 } 4456 if (mSelectingText) { 4457 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4458 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4459 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4460 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4461 int multiplier = event.getRepeatCount() + 1; 4462 moveSelection(xRate * multiplier, yRate * multiplier); 4463 return true; 4464 } 4465 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4466 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4467 return true; 4468 } 4469 // Bubble up the key event as WebView doesn't handle it 4470 return false; 4471 } 4472 4473 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4474 switchOutDrawHistory(); 4475 if (event.getRepeatCount() == 0) { 4476 if (mSelectingText) { 4477 return true; // discard press if copy in progress 4478 } 4479 mGotCenterDown = true; 4480 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4481 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4482 // Already checked mNativeClass, so we do not need to check it 4483 // again. 4484 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4485 return true; 4486 } 4487 // Bubble up the key event as WebView doesn't handle it 4488 return false; 4489 } 4490 4491 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 4492 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 4493 // turn off copy select if a shift-key combo is pressed 4494 selectionDone(); 4495 } 4496 4497 if (getSettings().getNavDump()) { 4498 switch (keyCode) { 4499 case KeyEvent.KEYCODE_4: 4500 dumpDisplayTree(); 4501 break; 4502 case KeyEvent.KEYCODE_5: 4503 case KeyEvent.KEYCODE_6: 4504 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4505 break; 4506 case KeyEvent.KEYCODE_7: 4507 case KeyEvent.KEYCODE_8: 4508 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4509 break; 4510 case KeyEvent.KEYCODE_9: 4511 nativeInstrumentReport(); 4512 return true; 4513 } 4514 } 4515 4516 if (nativeCursorIsTextInput()) { 4517 // This message will put the node in focus, for the DOM's notion 4518 // of focus, and make the focuscontroller active 4519 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 4520 nativeCursorNodePointer()); 4521 // This will bring up the WebTextView and put it in focus, for 4522 // our view system's notion of focus 4523 rebuildWebTextView(); 4524 // Now we need to pass the event to it 4525 if (inEditingMode()) { 4526 mWebTextView.setDefaultSelection(); 4527 return mWebTextView.dispatchKeyEvent(event); 4528 } 4529 } else if (nativeHasFocusNode()) { 4530 // In this case, the cursor is not on a text input, but the focus 4531 // might be. Check it, and if so, hand over to the WebTextView. 4532 rebuildWebTextView(); 4533 if (inEditingMode()) { 4534 mWebTextView.setDefaultSelection(); 4535 return mWebTextView.dispatchKeyEvent(event); 4536 } 4537 } 4538 4539 // TODO: should we pass all the keys to DOM or check the meta tag 4540 if (nativeCursorWantsKeyEvents() || true) { 4541 // pass the key to DOM 4542 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4543 // return true as DOM handles the key 4544 return true; 4545 } 4546 4547 // Bubble up the key event as WebView doesn't handle it 4548 return false; 4549 } 4550 4551 @Override 4552 public boolean onKeyUp(int keyCode, KeyEvent event) { 4553 if (DebugFlags.WEB_VIEW) { 4554 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4555 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4556 } 4557 4558 if (mNativeClass == 0) { 4559 return false; 4560 } 4561 4562 // special CALL handling when cursor node's href is "tel:XXX" 4563 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4564 String text = nativeCursorText(); 4565 if (!nativeCursorIsTextInput() && text != null 4566 && text.startsWith(SCHEME_TEL)) { 4567 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4568 getContext().startActivity(intent); 4569 return true; 4570 } 4571 } 4572 4573 // Bubble up the key event if 4574 // 1. it is a system key; or 4575 // 2. the host application wants to handle it; 4576 // 3. the accessibility injector is present and wants to handle it; 4577 if (event.isSystem() 4578 || mCallbackProxy.uiOverrideKeyEvent(event) 4579 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4580 return false; 4581 } 4582 4583 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4584 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4585 if (!pageShouldHandleShiftAndArrows() && copySelection()) { 4586 selectionDone(); 4587 return true; 4588 } 4589 } 4590 4591 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4592 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4593 if (pageShouldHandleShiftAndArrows()) { 4594 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4595 return true; 4596 } 4597 // always handle the navigation keys in the UI thread 4598 // Bubble up the key event as WebView doesn't handle it 4599 return false; 4600 } 4601 4602 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4603 // remove the long press message first 4604 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4605 mGotCenterDown = false; 4606 4607 if (mSelectingText) { 4608 if (mExtendSelection) { 4609 copySelection(); 4610 selectionDone(); 4611 } else { 4612 mExtendSelection = true; 4613 nativeSetExtendSelection(); 4614 invalidate(); // draw the i-beam instead of the arrow 4615 } 4616 return true; // discard press if copy in progress 4617 } 4618 4619 // perform the single click 4620 Rect visibleRect = sendOurVisibleRect(); 4621 // Note that sendOurVisibleRect calls viewToContent, so the 4622 // coordinates should be in content coordinates. 4623 if (!nativeCursorIntersects(visibleRect)) { 4624 return false; 4625 } 4626 WebViewCore.CursorData data = cursorData(); 4627 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4628 playSoundEffect(SoundEffectConstants.CLICK); 4629 if (nativeCursorIsTextInput()) { 4630 rebuildWebTextView(); 4631 centerKeyPressOnTextField(); 4632 if (inEditingMode()) { 4633 mWebTextView.setDefaultSelection(); 4634 } 4635 return true; 4636 } 4637 clearTextEntry(); 4638 nativeShowCursorTimed(); 4639 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4640 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4641 nativeCursorNodePointer()); 4642 } 4643 return true; 4644 } 4645 4646 // TODO: should we pass all the keys to DOM or check the meta tag 4647 if (nativeCursorWantsKeyEvents() || true) { 4648 // pass the key to DOM 4649 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4650 // return true as DOM handles the key 4651 return true; 4652 } 4653 4654 // Bubble up the key event as WebView doesn't handle it 4655 return false; 4656 } 4657 4658 private void setUpSelect() { 4659 if (0 == mNativeClass) return; // client isn't initialized 4660 if (inFullScreenMode()) return; 4661 if (mSelectingText) return; 4662 mExtendSelection = false; 4663 mSelectingText = mDrawSelectionPointer = true; 4664 // don't let the picture change during text selection 4665 WebViewCore.pauseUpdatePicture(mWebViewCore); 4666 nativeResetSelection(); 4667 if (nativeHasCursorNode()) { 4668 Rect rect = nativeCursorNodeBounds(); 4669 mSelectX = contentToViewX(rect.left); 4670 mSelectY = contentToViewY(rect.top); 4671 } else if (mLastTouchY > getVisibleTitleHeight()) { 4672 mSelectX = mScrollX + (int) mLastTouchX; 4673 mSelectY = mScrollY + (int) mLastTouchY; 4674 } else { 4675 mSelectX = mScrollX + getViewWidth() / 2; 4676 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4677 } 4678 nativeHideCursor(); 4679 mSelectCallback = new SelectActionModeCallback(); 4680 mSelectCallback.setWebView(this); 4681 startActionMode(mSelectCallback); 4682 } 4683 4684 /** 4685 * Use this method to put the WebView into text selection mode. 4686 * Do not rely on this functionality; it will be deprecated in the future. 4687 */ 4688 public void emulateShiftHeld() { 4689 setUpSelect(); 4690 } 4691 4692 /** 4693 * Select all of the text in this WebView. 4694 */ 4695 void selectAll() { 4696 if (0 == mNativeClass) return; // client isn't initialized 4697 if (inFullScreenMode()) return; 4698 if (!mSelectingText) setUpSelect(); 4699 nativeSelectAll(); 4700 mDrawSelectionPointer = false; 4701 mExtendSelection = true; 4702 invalidate(); 4703 } 4704 4705 /** 4706 * Called when the selection has been removed. 4707 */ 4708 void selectionDone() { 4709 if (mSelectingText) { 4710 mSelectingText = false; 4711 // finish is idempotent, so this is fine even if selectionDone was 4712 // called by mSelectCallback.onDestroyActionMode 4713 mSelectCallback.finish(); 4714 mSelectCallback = null; 4715 WebViewCore.resumePriority(); 4716 WebViewCore.resumeUpdatePicture(mWebViewCore); 4717 invalidate(); // redraw without selection 4718 mAutoScrollX = 0; 4719 mAutoScrollY = 0; 4720 mSentAutoScrollMessage = false; 4721 } 4722 } 4723 4724 /** 4725 * Copy the selection to the clipboard 4726 */ 4727 boolean copySelection() { 4728 boolean copiedSomething = false; 4729 String selection = getSelection(); 4730 if (selection != "") { 4731 if (DebugFlags.WEB_VIEW) { 4732 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4733 } 4734 Toast.makeText(mContext 4735 , com.android.internal.R.string.text_copied 4736 , Toast.LENGTH_SHORT).show(); 4737 copiedSomething = true; 4738 ClipboardManager cm = (ClipboardManager)getContext() 4739 .getSystemService(Context.CLIPBOARD_SERVICE); 4740 cm.setText(selection); 4741 } 4742 invalidate(); // remove selection region and pointer 4743 return copiedSomething; 4744 } 4745 4746 /** 4747 * Returns the currently highlighted text as a string. 4748 */ 4749 String getSelection() { 4750 if (mNativeClass == 0) return ""; 4751 return nativeGetSelection(); 4752 } 4753 4754 @Override 4755 protected void onAttachedToWindow() { 4756 super.onAttachedToWindow(); 4757 if (hasWindowFocus()) setActive(true); 4758 final ViewTreeObserver treeObserver = getViewTreeObserver(); 4759 if (treeObserver != null) { 4760 if (mGlobalLayoutListener == null) { 4761 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 4762 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 4763 } 4764 if (mScrollChangedListener == null) { 4765 mScrollChangedListener = new InnerScrollChangedListener(); 4766 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 4767 } 4768 } 4769 } 4770 4771 @Override 4772 protected void onDetachedFromWindow() { 4773 clearHelpers(); 4774 mZoomManager.dismissZoomPicker(); 4775 if (hasWindowFocus()) setActive(false); 4776 4777 final ViewTreeObserver treeObserver = getViewTreeObserver(); 4778 if (treeObserver != null) { 4779 if (mGlobalLayoutListener != null) { 4780 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 4781 mGlobalLayoutListener = null; 4782 } 4783 if (mScrollChangedListener != null) { 4784 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 4785 mScrollChangedListener = null; 4786 } 4787 } 4788 4789 super.onDetachedFromWindow(); 4790 } 4791 4792 @Override 4793 protected void onVisibilityChanged(View changedView, int visibility) { 4794 super.onVisibilityChanged(changedView, visibility); 4795 // The zoomManager may be null if the webview is created from XML that 4796 // specifies the view's visibility param as not visible (see http://b/2794841) 4797 if (visibility != View.VISIBLE && mZoomManager != null) { 4798 mZoomManager.dismissZoomPicker(); 4799 } 4800 } 4801 4802 /** 4803 * @deprecated WebView no longer needs to implement 4804 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4805 */ 4806 @Deprecated 4807 public void onChildViewAdded(View parent, View child) {} 4808 4809 /** 4810 * @deprecated WebView no longer needs to implement 4811 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4812 */ 4813 @Deprecated 4814 public void onChildViewRemoved(View p, View child) {} 4815 4816 /** 4817 * @deprecated WebView should not have implemented 4818 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4819 * does nothing now. 4820 */ 4821 @Deprecated 4822 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4823 } 4824 4825 private void setActive(boolean active) { 4826 if (active) { 4827 if (hasFocus()) { 4828 // If our window regained focus, and we have focus, then begin 4829 // drawing the cursor ring 4830 mDrawCursorRing = true; 4831 setFocusControllerActive(true); 4832 if (mNativeClass != 0) { 4833 nativeRecordButtons(true, false, true); 4834 } 4835 } else { 4836 if (!inEditingMode()) { 4837 // If our window gained focus, but we do not have it, do not 4838 // draw the cursor ring. 4839 mDrawCursorRing = false; 4840 setFocusControllerActive(false); 4841 } 4842 // We do not call nativeRecordButtons here because we assume 4843 // that when we lost focus, or window focus, it got called with 4844 // false for the first parameter 4845 } 4846 } else { 4847 if (!mZoomManager.isZoomPickerVisible()) { 4848 /* 4849 * The external zoom controls come in their own window, so our 4850 * window loses focus. Our policy is to not draw the cursor ring 4851 * if our window is not focused, but this is an exception since 4852 * the user can still navigate the web page with the zoom 4853 * controls showing. 4854 */ 4855 mDrawCursorRing = false; 4856 } 4857 mGotKeyDown = false; 4858 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4859 mTouchMode = TOUCH_DONE_MODE; 4860 if (mNativeClass != 0) { 4861 nativeRecordButtons(false, false, true); 4862 } 4863 setFocusControllerActive(false); 4864 } 4865 invalidate(); 4866 } 4867 4868 // To avoid drawing the cursor ring, and remove the TextView when our window 4869 // loses focus. 4870 @Override 4871 public void onWindowFocusChanged(boolean hasWindowFocus) { 4872 setActive(hasWindowFocus); 4873 if (hasWindowFocus) { 4874 JWebCoreJavaBridge.setActiveWebView(this); 4875 } else { 4876 JWebCoreJavaBridge.removeActiveWebView(this); 4877 } 4878 super.onWindowFocusChanged(hasWindowFocus); 4879 } 4880 4881 /* 4882 * Pass a message to WebCore Thread, telling the WebCore::Page's 4883 * FocusController to be "inactive" so that it will 4884 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4885 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4886 */ 4887 /* package */ void setFocusControllerActive(boolean active) { 4888 if (mWebViewCore == null) return; 4889 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 4890 // Need to send this message after the document regains focus. 4891 if (active && mListBoxMessage != null) { 4892 mWebViewCore.sendMessage(mListBoxMessage); 4893 mListBoxMessage = null; 4894 } 4895 } 4896 4897 @Override 4898 protected void onFocusChanged(boolean focused, int direction, 4899 Rect previouslyFocusedRect) { 4900 if (DebugFlags.WEB_VIEW) { 4901 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4902 } 4903 if (focused) { 4904 // When we regain focus, if we have window focus, resume drawing 4905 // the cursor ring 4906 if (hasWindowFocus()) { 4907 mDrawCursorRing = true; 4908 if (mNativeClass != 0) { 4909 nativeRecordButtons(true, false, true); 4910 } 4911 setFocusControllerActive(true); 4912 //} else { 4913 // The WebView has gained focus while we do not have 4914 // windowfocus. When our window lost focus, we should have 4915 // called nativeRecordButtons(false...) 4916 } 4917 } else { 4918 // When we lost focus, unless focus went to the TextView (which is 4919 // true if we are in editing mode), stop drawing the cursor ring. 4920 if (!inEditingMode()) { 4921 mDrawCursorRing = false; 4922 if (mNativeClass != 0) { 4923 nativeRecordButtons(false, false, true); 4924 } 4925 setFocusControllerActive(false); 4926 } 4927 mGotKeyDown = false; 4928 } 4929 4930 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4931 } 4932 4933 void setGLRectViewport() { 4934 // Use the getGlobalVisibleRect() to get the intersection among the parents 4935 Rect webViewRect = new Rect(); 4936 boolean visible = getGlobalVisibleRect(webViewRect); 4937 4938 // Then need to invert the Y axis, just for GL 4939 View rootView = getRootView(); 4940 int rootViewHeight = rootView.getHeight(); 4941 int savedWebViewBottom = webViewRect.bottom; 4942 webViewRect.bottom = rootViewHeight - webViewRect.top; 4943 webViewRect.top = rootViewHeight - savedWebViewBottom; 4944 4945 // Store the viewport 4946 mGLRectViewport = webViewRect; 4947 } 4948 4949 /** 4950 * @hide 4951 */ 4952 @Override 4953 protected boolean setFrame(int left, int top, int right, int bottom) { 4954 boolean changed = super.setFrame(left, top, right, bottom); 4955 if (!changed && mHeightCanMeasure) { 4956 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4957 // in WebViewCore after we get the first layout. We do call 4958 // requestLayout() when we get contentSizeChanged(). But the View 4959 // system won't call onSizeChanged if the dimension is not changed. 4960 // In this case, we need to call sendViewSizeZoom() explicitly to 4961 // notify the WebKit about the new dimensions. 4962 sendViewSizeZoom(false); 4963 } 4964 setGLRectViewport(); 4965 return changed; 4966 } 4967 4968 @Override 4969 protected void onSizeChanged(int w, int h, int ow, int oh) { 4970 super.onSizeChanged(w, h, ow, oh); 4971 4972 // adjust the max viewport width depending on the view dimensions. This 4973 // is to ensure the scaling is not going insane. So do not shrink it if 4974 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4975 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 4976 if (newMaxViewportWidth > sMaxViewportWidth) { 4977 sMaxViewportWidth = newMaxViewportWidth; 4978 } 4979 4980 mZoomManager.onSizeChanged(w, h, ow, oh); 4981 } 4982 4983 @Override 4984 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4985 super.onScrollChanged(l, t, oldl, oldt); 4986 if (!mInOverScrollMode) { 4987 sendOurVisibleRect(); 4988 // update WebKit if visible title bar height changed. The logic is same 4989 // as getVisibleTitleHeight. 4990 int titleHeight = getTitleHeight(); 4991 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4992 sendViewSizeZoom(false); 4993 } 4994 } 4995 } 4996 4997 @Override 4998 public boolean dispatchKeyEvent(KeyEvent event) { 4999 boolean dispatch = true; 5000 5001 // Textfields, plugins, and contentEditable nodes need to receive the 5002 // shift up key even if another key was released while the shift key 5003 // was held down. 5004 if (!inEditingMode() && (mNativeClass == 0 5005 || !nativePageShouldHandleShiftAndArrows())) { 5006 if (event.getAction() == KeyEvent.ACTION_DOWN) { 5007 mGotKeyDown = true; 5008 } else { 5009 if (!mGotKeyDown) { 5010 /* 5011 * We got a key up for which we were not the recipient of 5012 * the original key down. Don't give it to the view. 5013 */ 5014 dispatch = false; 5015 } 5016 mGotKeyDown = false; 5017 } 5018 } 5019 5020 if (dispatch) { 5021 return super.dispatchKeyEvent(event); 5022 } else { 5023 // We didn't dispatch, so let something else handle the key 5024 return false; 5025 } 5026 } 5027 5028 // Here are the snap align logic: 5029 // 1. If it starts nearly horizontally or vertically, snap align; 5030 // 2. If there is a dramitic direction change, let it go; 5031 // 3. If there is a same direction back and forth, lock it. 5032 5033 // adjustable parameters 5034 private int mMinLockSnapReverseDistance; 5035 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5036 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5037 5038 private boolean hitFocusedPlugin(int contentX, int contentY) { 5039 if (DebugFlags.WEB_VIEW) { 5040 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5041 Rect r = nativeFocusNodeBounds(); 5042 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5043 + ", " + r.right + ", " + r.bottom + ")"); 5044 } 5045 return nativeFocusIsPlugin() 5046 && nativeFocusNodeBounds().contains(contentX, contentY); 5047 } 5048 5049 private boolean shouldForwardTouchEvent() { 5050 return mFullScreenHolder != null || (mForwardTouchEvents 5051 && !mSelectingText 5052 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 5053 } 5054 5055 private boolean inFullScreenMode() { 5056 return mFullScreenHolder != null; 5057 } 5058 5059 private void dismissFullScreenMode() { 5060 if (inFullScreenMode()) { 5061 mFullScreenHolder.dismiss(); 5062 mFullScreenHolder = null; 5063 } 5064 } 5065 5066 void onPinchToZoomAnimationStart() { 5067 // cancel the single touch handling 5068 cancelTouch(); 5069 onZoomAnimationStart(); 5070 } 5071 5072 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5073 onZoomAnimationEnd(); 5074 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5075 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5076 // as it may trigger the unwanted fling. 5077 mTouchMode = TOUCH_PINCH_DRAG; 5078 mConfirmMove = true; 5079 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5080 } 5081 5082 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5083 // layer is found. 5084 private void startScrollingLayer(float x, float y) { 5085 int contentX = viewToContentX((int) x + mScrollX); 5086 int contentY = viewToContentY((int) y + mScrollY); 5087 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5088 mScrollingLayerRect); 5089 if (mScrollingLayer != 0) { 5090 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5091 } 5092 } 5093 5094 // 1/(density * density) used to compute the distance between points. 5095 // Computed in init(). 5096 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5097 5098 // The distance between two points reported in onTouchEvent scaled by the 5099 // density of the screen. 5100 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5101 5102 @Override 5103 public boolean onTouchEvent(MotionEvent ev) { 5104 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5105 return false; 5106 } 5107 5108 if (DebugFlags.WEB_VIEW) { 5109 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5110 + " mTouchMode=" + mTouchMode 5111 + " numPointers=" + ev.getPointerCount()); 5112 } 5113 5114 int action = ev.getAction(); 5115 float x = ev.getX(); 5116 float y = ev.getY(); 5117 long eventTime = ev.getEventTime(); 5118 5119 // mDeferMultitouch is a hack for layout tests, where it is used to 5120 // force passing multi-touch events to webkit. 5121 // FIXME: always pass multi-touch events to webkit and remove everything 5122 // related to mDeferMultitouch. 5123 if (ev.getPointerCount() > 1 && 5124 (mDeferMultitouch || mZoomManager.isZoomScaleFixed())) { 5125 if (DebugFlags.WEB_VIEW) { 5126 Log.v(LOGTAG, "passing " + ev.getPointerCount() + " points to webkit"); 5127 } 5128 passMultiTouchToWebKit(ev); 5129 return true; 5130 } 5131 5132 final ScaleGestureDetector detector = 5133 mZoomManager.getMultiTouchGestureDetector(); 5134 5135 if (mZoomManager.supportsMultiTouchZoom() && ev.getPointerCount() > 1) { 5136 if (!detector.isInProgress() && 5137 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 5138 // Insert a fake pointer down event in order to start 5139 // the zoom scale detector. 5140 MotionEvent temp = MotionEvent.obtain(ev); 5141 // Clear the original event and set it to 5142 // ACTION_POINTER_DOWN. 5143 try { 5144 temp.setAction(temp.getAction() & 5145 ~MotionEvent.ACTION_MASK | 5146 MotionEvent.ACTION_POINTER_DOWN); 5147 detector.onTouchEvent(temp); 5148 } finally { 5149 temp.recycle(); 5150 } 5151 } 5152 5153 detector.onTouchEvent(ev); 5154 5155 if (detector.isInProgress()) { 5156 mLastTouchTime = eventTime; 5157 cancelLongPress(); 5158 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5159 if (!mZoomManager.supportsPanDuringZoom()) { 5160 return true; 5161 } 5162 mTouchMode = TOUCH_DRAG_MODE; 5163 if (mVelocityTracker == null) { 5164 mVelocityTracker = VelocityTracker.obtain(); 5165 } 5166 } 5167 5168 x = detector.getFocusX(); 5169 y = detector.getFocusY(); 5170 action = ev.getAction() & MotionEvent.ACTION_MASK; 5171 if (action == MotionEvent.ACTION_POINTER_DOWN) { 5172 cancelTouch(); 5173 action = MotionEvent.ACTION_DOWN; 5174 } else if (action == MotionEvent.ACTION_POINTER_UP) { 5175 // set mLastTouchX/Y to the remaining point 5176 mLastTouchX = x; 5177 mLastTouchY = y; 5178 } else if (action == MotionEvent.ACTION_MOVE) { 5179 // negative x or y indicate it is on the edge, skip it. 5180 if (x < 0 || y < 0) { 5181 return true; 5182 } 5183 } 5184 } 5185 5186 // Due to the touch screen edge effect, a touch closer to the edge 5187 // always snapped to the edge. As getViewWidth() can be different from 5188 // getWidth() due to the scrollbar, adjusting the point to match 5189 // getViewWidth(). Same applied to the height. 5190 x = Math.min(x, getViewWidth() - 1); 5191 y = Math.min(y, getViewHeightWithTitle() - 1); 5192 5193 float fDeltaX = mLastTouchX - x; 5194 float fDeltaY = mLastTouchY - y; 5195 int deltaX = (int) fDeltaX; 5196 int deltaY = (int) fDeltaY; 5197 int contentX = viewToContentX((int) x + mScrollX); 5198 int contentY = viewToContentY((int) y + mScrollY); 5199 5200 switch (action) { 5201 case MotionEvent.ACTION_DOWN: { 5202 mPreventDefault = PREVENT_DEFAULT_NO; 5203 mConfirmMove = false; 5204 mInitialHitTestResult = null; 5205 if (!mScroller.isFinished()) { 5206 // stop the current scroll animation, but if this is 5207 // the start of a fling, allow it to add to the current 5208 // fling's velocity 5209 mScroller.abortAnimation(); 5210 mTouchMode = TOUCH_DRAG_START_MODE; 5211 mConfirmMove = true; 5212 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5213 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5214 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5215 if (getSettings().supportTouchOnly()) { 5216 removeTouchHighlight(true); 5217 } 5218 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5219 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5220 } else { 5221 // commit the short press action for the previous tap 5222 doShortPress(); 5223 mTouchMode = TOUCH_INIT_MODE; 5224 mDeferTouchProcess = (!inFullScreenMode() 5225 && mForwardTouchEvents) ? hitFocusedPlugin( 5226 contentX, contentY) : false; 5227 } 5228 } else { // the normal case 5229 mTouchMode = TOUCH_INIT_MODE; 5230 mDeferTouchProcess = (!inFullScreenMode() 5231 && mForwardTouchEvents) ? hitFocusedPlugin( 5232 contentX, contentY) : false; 5233 mWebViewCore.sendMessage( 5234 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5235 if (getSettings().supportTouchOnly()) { 5236 TouchHighlightData data = new TouchHighlightData(); 5237 data.mX = contentX; 5238 data.mY = contentY; 5239 data.mSlop = viewToContentDimension(mNavSlop); 5240 mWebViewCore.sendMessageDelayed( 5241 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5242 ViewConfiguration.getTapTimeout()); 5243 if (DEBUG_TOUCH_HIGHLIGHT) { 5244 if (getSettings().getNavDump()) { 5245 mTouchHighlightX = (int) x + mScrollX; 5246 mTouchHighlightY = (int) y + mScrollY; 5247 mPrivateHandler.postDelayed(new Runnable() { 5248 public void run() { 5249 mTouchHighlightX = mTouchHighlightY = 0; 5250 invalidate(); 5251 } 5252 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5253 } 5254 } 5255 } 5256 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5257 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5258 (eventTime - mLastTouchUpTime), eventTime); 5259 } 5260 if (mSelectingText) { 5261 mDrawSelectionPointer = false; 5262 mSelectionStarted = nativeStartSelection(contentX, contentY); 5263 if (DebugFlags.WEB_VIEW) { 5264 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5265 } 5266 invalidate(); 5267 } 5268 } 5269 // Trigger the link 5270 if (mTouchMode == TOUCH_INIT_MODE 5271 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5272 mPrivateHandler.sendEmptyMessageDelayed( 5273 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5274 mPrivateHandler.sendEmptyMessageDelayed( 5275 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5276 if (inFullScreenMode() || mDeferTouchProcess) { 5277 mPreventDefault = PREVENT_DEFAULT_YES; 5278 } else if (mForwardTouchEvents) { 5279 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5280 } else { 5281 mPreventDefault = PREVENT_DEFAULT_NO; 5282 } 5283 // pass the touch events from UI thread to WebCore thread 5284 if (shouldForwardTouchEvent()) { 5285 TouchEventData ted = new TouchEventData(); 5286 ted.mAction = action; 5287 ted.mPoints = new Point[1]; 5288 ted.mPoints[0] = new Point(contentX, contentY); 5289 ted.mMetaState = ev.getMetaState(); 5290 ted.mReprocess = mDeferTouchProcess; 5291 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5292 if (mDeferTouchProcess) { 5293 // still needs to set them for compute deltaX/Y 5294 mLastTouchX = x; 5295 mLastTouchY = y; 5296 break; 5297 } 5298 if (!inFullScreenMode()) { 5299 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5300 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5301 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5302 action, 0), TAP_TIMEOUT); 5303 } 5304 } 5305 } 5306 startTouch(x, y, eventTime); 5307 break; 5308 } 5309 case MotionEvent.ACTION_MOVE: { 5310 boolean firstMove = false; 5311 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5312 >= mTouchSlopSquare) { 5313 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5314 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5315 mConfirmMove = true; 5316 firstMove = true; 5317 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5318 mTouchMode = TOUCH_INIT_MODE; 5319 } 5320 if (getSettings().supportTouchOnly()) { 5321 removeTouchHighlight(true); 5322 } 5323 } 5324 // pass the touch events from UI thread to WebCore thread 5325 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5326 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5327 TouchEventData ted = new TouchEventData(); 5328 ted.mAction = action; 5329 ted.mPoints = new Point[1]; 5330 ted.mPoints[0] = new Point(contentX, contentY); 5331 ted.mMetaState = ev.getMetaState(); 5332 ted.mReprocess = mDeferTouchProcess; 5333 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5334 mLastSentTouchTime = eventTime; 5335 if (mDeferTouchProcess) { 5336 break; 5337 } 5338 if (firstMove && !inFullScreenMode()) { 5339 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5340 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5341 action, 0), TAP_TIMEOUT); 5342 } 5343 } 5344 if (mTouchMode == TOUCH_DONE_MODE 5345 || mPreventDefault == PREVENT_DEFAULT_YES) { 5346 // no dragging during scroll zoom animation, or when prevent 5347 // default is yes 5348 break; 5349 } 5350 if (mVelocityTracker == null) { 5351 Log.e(LOGTAG, "Got null mVelocityTracker when " 5352 + "mPreventDefault = " + mPreventDefault 5353 + " mDeferTouchProcess = " + mDeferTouchProcess 5354 + " mTouchMode = " + mTouchMode); 5355 } 5356 mVelocityTracker.addMovement(ev); 5357 if (mSelectingText && mSelectionStarted) { 5358 if (DebugFlags.WEB_VIEW) { 5359 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5360 } 5361 ViewParent parent = getParent(); 5362 if (parent != null) { 5363 parent.requestDisallowInterceptTouchEvent(true); 5364 } 5365 int layer = nativeScrollableLayer(contentX, contentY, mScrollingLayerRect); 5366 if (layer == 0) { 5367 mAutoScrollX = x <= SELECT_SCROLL ? -SELECT_SCROLL 5368 : x >= getViewWidth() - SELECT_SCROLL 5369 ? SELECT_SCROLL : 0; 5370 mAutoScrollY = y <= SELECT_SCROLL ? -SELECT_SCROLL 5371 : y >= getViewHeightWithTitle() - SELECT_SCROLL 5372 ? SELECT_SCROLL : 0; 5373 if (!mSentAutoScrollMessage) { 5374 mSentAutoScrollMessage = true; 5375 mPrivateHandler.sendEmptyMessageDelayed( 5376 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5377 } 5378 } else { 5379 // TODO: allow scrollable overflow div to autoscroll 5380 } 5381 nativeExtendSelection(contentX, contentY); 5382 invalidate(); 5383 break; 5384 } 5385 5386 if (mTouchMode != TOUCH_DRAG_MODE && 5387 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5388 5389 if (!mConfirmMove) { 5390 break; 5391 } 5392 5393 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5394 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5395 // track mLastTouchTime as we may need to do fling at 5396 // ACTION_UP 5397 mLastTouchTime = eventTime; 5398 break; 5399 } 5400 5401 // Only lock dragging to one axis if we don't have a scale in progress. 5402 // Scaling implies free-roaming movement. Note this is only ever a question 5403 // if mZoomManager.supportsPanDuringZoom() is true. 5404 if (detector != null && !detector.isInProgress()) { 5405 // if it starts nearly horizontal or vertical, enforce it 5406 int ax = Math.abs(deltaX); 5407 int ay = Math.abs(deltaY); 5408 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5409 mSnapScrollMode = SNAP_X; 5410 mSnapPositive = deltaX > 0; 5411 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5412 mSnapScrollMode = SNAP_Y; 5413 mSnapPositive = deltaY > 0; 5414 } 5415 } 5416 5417 mTouchMode = TOUCH_DRAG_MODE; 5418 mLastTouchX = x; 5419 mLastTouchY = y; 5420 fDeltaX = 0.0f; 5421 fDeltaY = 0.0f; 5422 deltaX = 0; 5423 deltaY = 0; 5424 5425 startScrollingLayer(x, y); 5426 startDrag(); 5427 } 5428 5429 // do pan 5430 boolean done = false; 5431 boolean keepScrollBarsVisible = false; 5432 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 5433 mLastTouchX = x; 5434 mLastTouchY = y; 5435 keepScrollBarsVisible = done = true; 5436 } else { 5437 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5438 int ax = Math.abs(deltaX); 5439 int ay = Math.abs(deltaY); 5440 if (mSnapScrollMode == SNAP_X) { 5441 // radical change means getting out of snap mode 5442 if (ay > MAX_SLOPE_FOR_DIAG * ax 5443 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5444 mSnapScrollMode = SNAP_NONE; 5445 } 5446 // reverse direction means lock in the snap mode 5447 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5448 (mSnapPositive 5449 ? deltaX < -mMinLockSnapReverseDistance 5450 : deltaX > mMinLockSnapReverseDistance)) { 5451 mSnapScrollMode |= SNAP_LOCK; 5452 } 5453 } else { 5454 // radical change means getting out of snap mode 5455 if (ax > MAX_SLOPE_FOR_DIAG * ay 5456 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5457 mSnapScrollMode = SNAP_NONE; 5458 } 5459 // reverse direction means lock in the snap mode 5460 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5461 (mSnapPositive 5462 ? deltaY < -mMinLockSnapReverseDistance 5463 : deltaY > mMinLockSnapReverseDistance)) { 5464 mSnapScrollMode |= SNAP_LOCK; 5465 } 5466 } 5467 } 5468 if (mSnapScrollMode != SNAP_NONE) { 5469 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5470 deltaY = 0; 5471 } else { 5472 deltaX = 0; 5473 } 5474 } 5475 if ((deltaX | deltaY) != 0) { 5476 if (deltaX != 0) { 5477 mLastTouchX = x; 5478 } 5479 if (deltaY != 0) { 5480 mLastTouchY = y; 5481 } 5482 mHeldMotionless = MOTIONLESS_FALSE; 5483 } else { 5484 // keep the scrollbar on the screen even there is no 5485 // scroll 5486 mLastTouchX = x; 5487 mLastTouchY = y; 5488 keepScrollBarsVisible = true; 5489 } 5490 mLastTouchTime = eventTime; 5491 mUserScroll = true; 5492 } 5493 5494 doDrag(deltaX, deltaY); 5495 5496 // Turn off scrollbars when dragging a layer. 5497 if (keepScrollBarsVisible && 5498 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5499 if (mHeldMotionless != MOTIONLESS_TRUE) { 5500 mHeldMotionless = MOTIONLESS_TRUE; 5501 invalidate(); 5502 } 5503 // keep the scrollbar on the screen even there is no scroll 5504 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5505 false); 5506 // return false to indicate that we can't pan out of the 5507 // view space 5508 return !done; 5509 } 5510 break; 5511 } 5512 case MotionEvent.ACTION_UP: { 5513 if (!isFocused()) requestFocus(); 5514 // pass the touch events from UI thread to WebCore thread 5515 if (shouldForwardTouchEvent()) { 5516 TouchEventData ted = new TouchEventData(); 5517 ted.mAction = action; 5518 ted.mPoints = new Point[1]; 5519 ted.mPoints[0] = new Point(contentX, contentY); 5520 ted.mMetaState = ev.getMetaState(); 5521 ted.mReprocess = mDeferTouchProcess; 5522 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5523 } 5524 mLastTouchUpTime = eventTime; 5525 switch (mTouchMode) { 5526 case TOUCH_DOUBLE_TAP_MODE: // double tap 5527 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5528 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5529 if (inFullScreenMode() || mDeferTouchProcess) { 5530 TouchEventData ted = new TouchEventData(); 5531 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5532 ted.mPoints = new Point[1]; 5533 ted.mPoints[0] = new Point(contentX, contentY); 5534 ted.mMetaState = ev.getMetaState(); 5535 ted.mReprocess = mDeferTouchProcess; 5536 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5537 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5538 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5539 mTouchMode = TOUCH_DONE_MODE; 5540 } 5541 break; 5542 case TOUCH_INIT_MODE: // tap 5543 case TOUCH_SHORTPRESS_START_MODE: 5544 case TOUCH_SHORTPRESS_MODE: 5545 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5546 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5547 if (mConfirmMove) { 5548 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5549 " WebCore's response for touch down."); 5550 if (mPreventDefault != PREVENT_DEFAULT_YES 5551 && (computeMaxScrollX() > 0 5552 || computeMaxScrollY() > 0)) { 5553 // If the user has performed a very quick touch 5554 // sequence it is possible that we may get here 5555 // before WebCore has had a chance to process the events. 5556 // In this case, any call to preventDefault in the 5557 // JS touch handler will not have been executed yet. 5558 // Hence we will see both the UI (now) and WebCore 5559 // (when context switches) handling the event, 5560 // regardless of whether the web developer actually 5561 // doeses preventDefault in their touch handler. This 5562 // is the nature of our asynchronous touch model. 5563 5564 // we will not rewrite drag code here, but we 5565 // will try fling if it applies. 5566 WebViewCore.reducePriority(); 5567 // to get better performance, pause updating the 5568 // picture 5569 WebViewCore.pauseUpdatePicture(mWebViewCore); 5570 // fall through to TOUCH_DRAG_MODE 5571 } else { 5572 // WebKit may consume the touch event and modify 5573 // DOM. drawContentPicture() will be called with 5574 // animateSroll as true for better performance. 5575 // Force redraw in high-quality. 5576 invalidate(); 5577 break; 5578 } 5579 } else { 5580 if (mSelectingText) { 5581 // tapping on selection or controls does nothing 5582 if (!nativeHitSelection(contentX, contentY)) { 5583 selectionDone(); 5584 } 5585 break; 5586 } 5587 // only trigger double tap if the WebView is 5588 // scalable 5589 if (mTouchMode == TOUCH_INIT_MODE 5590 && (canZoomIn() || canZoomOut())) { 5591 mPrivateHandler.sendEmptyMessageDelayed( 5592 RELEASE_SINGLE_TAP, ViewConfiguration 5593 .getDoubleTapTimeout()); 5594 } else { 5595 doShortPress(); 5596 } 5597 break; 5598 } 5599 case TOUCH_DRAG_MODE: 5600 case TOUCH_DRAG_LAYER_MODE: 5601 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5602 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5603 // if the user waits a while w/o moving before the 5604 // up, we don't want to do a fling 5605 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5606 if (mVelocityTracker == null) { 5607 Log.e(LOGTAG, "Got null mVelocityTracker when " 5608 + "mPreventDefault = " 5609 + mPreventDefault 5610 + " mDeferTouchProcess = " 5611 + mDeferTouchProcess); 5612 } 5613 mVelocityTracker.addMovement(ev); 5614 // set to MOTIONLESS_IGNORE so that it won't keep 5615 // removing and sending message in 5616 // drawCoreAndCursorRing() 5617 mHeldMotionless = MOTIONLESS_IGNORE; 5618 doFling(); 5619 break; 5620 } else { 5621 if (mScroller.springBack(mScrollX, mScrollY, 0, 5622 computeMaxScrollX(), 0, 5623 computeMaxScrollY())) { 5624 invalidate(); 5625 } 5626 } 5627 // redraw in high-quality, as we're done dragging 5628 mHeldMotionless = MOTIONLESS_TRUE; 5629 invalidate(); 5630 // fall through 5631 case TOUCH_DRAG_START_MODE: 5632 // TOUCH_DRAG_START_MODE should not happen for the real 5633 // device as we almost certain will get a MOVE. But this 5634 // is possible on emulator. 5635 mLastVelocity = 0; 5636 WebViewCore.resumePriority(); 5637 if (!mSelectingText) { 5638 WebViewCore.resumeUpdatePicture(mWebViewCore); 5639 } 5640 break; 5641 } 5642 stopTouch(); 5643 break; 5644 } 5645 case MotionEvent.ACTION_CANCEL: { 5646 if (mTouchMode == TOUCH_DRAG_MODE) { 5647 mScroller.springBack(mScrollX, mScrollY, 0, 5648 computeMaxScrollX(), 0, computeMaxScrollY()); 5649 invalidate(); 5650 } 5651 cancelWebCoreTouchEvent(contentX, contentY, false); 5652 cancelTouch(); 5653 break; 5654 } 5655 } 5656 return true; 5657 } 5658 5659 private void passMultiTouchToWebKit(MotionEvent ev) { 5660 TouchEventData ted = new TouchEventData(); 5661 ted.mAction = ev.getAction() & MotionEvent.ACTION_MASK; 5662 final int count = ev.getPointerCount(); 5663 ted.mPoints = new Point[count]; 5664 for (int c = 0; c < count; c++) { 5665 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5666 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5667 ted.mPoints[c] = new Point(x, y); 5668 } 5669 ted.mMetaState = ev.getMetaState(); 5670 ted.mReprocess = mDeferTouchProcess; 5671 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5672 cancelLongPress(); 5673 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5674 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5675 } 5676 5677 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5678 if (shouldForwardTouchEvent()) { 5679 if (removeEvents) { 5680 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5681 } 5682 TouchEventData ted = new TouchEventData(); 5683 ted.mPoints = new Point[1]; 5684 ted.mPoints[0] = new Point(x, y); 5685 ted.mAction = MotionEvent.ACTION_CANCEL; 5686 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5687 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5688 } 5689 } 5690 5691 private void startTouch(float x, float y, long eventTime) { 5692 // Remember where the motion event started 5693 mLastTouchX = x; 5694 mLastTouchY = y; 5695 mLastTouchTime = eventTime; 5696 mVelocityTracker = VelocityTracker.obtain(); 5697 mSnapScrollMode = SNAP_NONE; 5698 } 5699 5700 private void startDrag() { 5701 WebViewCore.reducePriority(); 5702 // to get better performance, pause updating the picture 5703 WebViewCore.pauseUpdatePicture(mWebViewCore); 5704 if (!mDragFromTextInput) { 5705 nativeHideCursor(); 5706 } 5707 5708 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5709 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 5710 mZoomManager.invokeZoomPicker(); 5711 } 5712 } 5713 5714 private void doDrag(int deltaX, int deltaY) { 5715 if ((deltaX | deltaY) != 0) { 5716 int oldX = mScrollX; 5717 int oldY = mScrollY; 5718 int rangeX = computeMaxScrollX(); 5719 int rangeY = computeMaxScrollY(); 5720 int overscrollDistance = mOverscrollDistance; 5721 5722 // Check for the original scrolling layer in case we change 5723 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 5724 // reached the edge of a layer but mScrollingLayer will be non-zero 5725 // if we initiated the drag on a layer. 5726 if (mScrollingLayer != 0) { 5727 final int contentX = viewToContentDimension(deltaX); 5728 final int contentY = viewToContentDimension(deltaY); 5729 5730 // Check the scrolling bounds to see if we will actually do any 5731 // scrolling. The rectangle is in document coordinates. 5732 final int maxX = mScrollingLayerRect.right; 5733 final int maxY = mScrollingLayerRect.bottom; 5734 final int resultX = Math.max(0, 5735 Math.min(mScrollingLayerRect.left + contentX, maxX)); 5736 final int resultY = Math.max(0, 5737 Math.min(mScrollingLayerRect.top + contentY, maxY)); 5738 5739 if (resultX != mScrollingLayerRect.left || 5740 resultY != mScrollingLayerRect.top) { 5741 // In case we switched to dragging the page. 5742 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5743 deltaX = contentX; 5744 deltaY = contentY; 5745 oldX = mScrollingLayerRect.left; 5746 oldY = mScrollingLayerRect.top; 5747 rangeX = maxX; 5748 rangeY = maxY; 5749 } else { 5750 // Scroll the main page if we are not going to scroll the 5751 // layer. This does not reset mScrollingLayer in case the 5752 // user changes directions and the layer can scroll the 5753 // other way. 5754 mTouchMode = TOUCH_DRAG_MODE; 5755 } 5756 } 5757 5758 if (mOverScrollGlow != null) { 5759 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 5760 } 5761 5762 overScrollBy(deltaX, deltaY, oldX, oldY, 5763 rangeX, rangeY, 5764 mOverscrollDistance, mOverscrollDistance, true); 5765 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 5766 invalidate(); 5767 } 5768 } 5769 mZoomManager.keepZoomPickerVisible(); 5770 } 5771 5772 private void stopTouch() { 5773 // we also use mVelocityTracker == null to tell us that we are 5774 // not "moving around", so we can take the slower/prettier 5775 // mode in the drawing code 5776 if (mVelocityTracker != null) { 5777 mVelocityTracker.recycle(); 5778 mVelocityTracker = null; 5779 } 5780 5781 // Release any pulled glows 5782 if (mOverScrollGlow != null) { 5783 mOverScrollGlow.releaseAll(); 5784 } 5785 } 5786 5787 private void cancelTouch() { 5788 // we also use mVelocityTracker == null to tell us that we are 5789 // not "moving around", so we can take the slower/prettier 5790 // mode in the drawing code 5791 if (mVelocityTracker != null) { 5792 mVelocityTracker.recycle(); 5793 mVelocityTracker = null; 5794 } 5795 5796 if ((mTouchMode == TOUCH_DRAG_MODE 5797 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 5798 WebViewCore.resumePriority(); 5799 WebViewCore.resumeUpdatePicture(mWebViewCore); 5800 } 5801 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5802 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5803 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5804 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5805 if (getSettings().supportTouchOnly()) { 5806 removeTouchHighlight(true); 5807 } 5808 mHeldMotionless = MOTIONLESS_TRUE; 5809 mTouchMode = TOUCH_DONE_MODE; 5810 nativeHideCursor(); 5811 } 5812 5813 private long mTrackballFirstTime = 0; 5814 private long mTrackballLastTime = 0; 5815 private float mTrackballRemainsX = 0.0f; 5816 private float mTrackballRemainsY = 0.0f; 5817 private int mTrackballXMove = 0; 5818 private int mTrackballYMove = 0; 5819 private boolean mSelectingText = false; 5820 private boolean mSelectionStarted = false; 5821 private boolean mExtendSelection = false; 5822 private boolean mDrawSelectionPointer = false; 5823 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5824 private static final int TRACKBALL_TIMEOUT = 200; 5825 private static final int TRACKBALL_WAIT = 100; 5826 private static final int TRACKBALL_SCALE = 400; 5827 private static final int TRACKBALL_SCROLL_COUNT = 5; 5828 private static final int TRACKBALL_MOVE_COUNT = 10; 5829 private static final int TRACKBALL_MULTIPLIER = 3; 5830 private static final int SELECT_CURSOR_OFFSET = 16; 5831 private static final int SELECT_SCROLL = 5; 5832 private int mSelectX = 0; 5833 private int mSelectY = 0; 5834 private boolean mFocusSizeChanged = false; 5835 private boolean mTrackballDown = false; 5836 private long mTrackballUpTime = 0; 5837 private long mLastCursorTime = 0; 5838 private Rect mLastCursorBounds; 5839 5840 // Set by default; BrowserActivity clears to interpret trackball data 5841 // directly for movement. Currently, the framework only passes 5842 // arrow key events, not trackball events, from one child to the next 5843 private boolean mMapTrackballToArrowKeys = true; 5844 5845 public void setMapTrackballToArrowKeys(boolean setMap) { 5846 mMapTrackballToArrowKeys = setMap; 5847 } 5848 5849 void resetTrackballTime() { 5850 mTrackballLastTime = 0; 5851 } 5852 5853 @Override 5854 public boolean onTrackballEvent(MotionEvent ev) { 5855 long time = ev.getEventTime(); 5856 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5857 if (ev.getY() > 0) pageDown(true); 5858 if (ev.getY() < 0) pageUp(true); 5859 return true; 5860 } 5861 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5862 if (mSelectingText) { 5863 return true; // discard press if copy in progress 5864 } 5865 mTrackballDown = true; 5866 if (mNativeClass == 0) { 5867 return false; 5868 } 5869 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5870 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5871 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5872 nativeSelectBestAt(mLastCursorBounds); 5873 } 5874 if (DebugFlags.WEB_VIEW) { 5875 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5876 + " time=" + time 5877 + " mLastCursorTime=" + mLastCursorTime); 5878 } 5879 if (isInTouchMode()) requestFocusFromTouch(); 5880 return false; // let common code in onKeyDown at it 5881 } 5882 if (ev.getAction() == MotionEvent.ACTION_UP) { 5883 // LONG_PRESS_CENTER is set in common onKeyDown 5884 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5885 mTrackballDown = false; 5886 mTrackballUpTime = time; 5887 if (mSelectingText) { 5888 if (mExtendSelection) { 5889 copySelection(); 5890 selectionDone(); 5891 } else { 5892 mExtendSelection = true; 5893 nativeSetExtendSelection(); 5894 invalidate(); // draw the i-beam instead of the arrow 5895 } 5896 return true; // discard press if copy in progress 5897 } 5898 if (DebugFlags.WEB_VIEW) { 5899 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5900 + " time=" + time 5901 ); 5902 } 5903 return false; // let common code in onKeyUp at it 5904 } 5905 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 5906 (mAccessibilityInjector != null || mAccessibilityScriptInjected)) { 5907 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5908 return false; 5909 } 5910 if (mTrackballDown) { 5911 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5912 return true; // discard move if trackball is down 5913 } 5914 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5915 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5916 return true; 5917 } 5918 // TODO: alternatively we can do panning as touch does 5919 switchOutDrawHistory(); 5920 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5921 if (DebugFlags.WEB_VIEW) { 5922 Log.v(LOGTAG, "onTrackballEvent time=" 5923 + time + " last=" + mTrackballLastTime); 5924 } 5925 mTrackballFirstTime = time; 5926 mTrackballXMove = mTrackballYMove = 0; 5927 } 5928 mTrackballLastTime = time; 5929 if (DebugFlags.WEB_VIEW) { 5930 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5931 } 5932 mTrackballRemainsX += ev.getX(); 5933 mTrackballRemainsY += ev.getY(); 5934 doTrackball(time, ev.getMetaState()); 5935 return true; 5936 } 5937 5938 void moveSelection(float xRate, float yRate) { 5939 if (mNativeClass == 0) 5940 return; 5941 int width = getViewWidth(); 5942 int height = getViewHeight(); 5943 mSelectX += xRate; 5944 mSelectY += yRate; 5945 int maxX = width + mScrollX; 5946 int maxY = height + mScrollY; 5947 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5948 , mSelectX)); 5949 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5950 , mSelectY)); 5951 if (DebugFlags.WEB_VIEW) { 5952 Log.v(LOGTAG, "moveSelection" 5953 + " mSelectX=" + mSelectX 5954 + " mSelectY=" + mSelectY 5955 + " mScrollX=" + mScrollX 5956 + " mScrollY=" + mScrollY 5957 + " xRate=" + xRate 5958 + " yRate=" + yRate 5959 ); 5960 } 5961 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 5962 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5963 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5964 : 0; 5965 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5966 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5967 : 0; 5968 pinScrollBy(scrollX, scrollY, true, 0); 5969 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5970 requestRectangleOnScreen(select); 5971 invalidate(); 5972 } 5973 5974 private int scaleTrackballX(float xRate, int width) { 5975 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5976 int nextXMove = xMove; 5977 if (xMove > 0) { 5978 if (xMove > mTrackballXMove) { 5979 xMove -= mTrackballXMove; 5980 } 5981 } else if (xMove < mTrackballXMove) { 5982 xMove -= mTrackballXMove; 5983 } 5984 mTrackballXMove = nextXMove; 5985 return xMove; 5986 } 5987 5988 private int scaleTrackballY(float yRate, int height) { 5989 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5990 int nextYMove = yMove; 5991 if (yMove > 0) { 5992 if (yMove > mTrackballYMove) { 5993 yMove -= mTrackballYMove; 5994 } 5995 } else if (yMove < mTrackballYMove) { 5996 yMove -= mTrackballYMove; 5997 } 5998 mTrackballYMove = nextYMove; 5999 return yMove; 6000 } 6001 6002 private int keyCodeToSoundsEffect(int keyCode) { 6003 switch(keyCode) { 6004 case KeyEvent.KEYCODE_DPAD_UP: 6005 return SoundEffectConstants.NAVIGATION_UP; 6006 case KeyEvent.KEYCODE_DPAD_RIGHT: 6007 return SoundEffectConstants.NAVIGATION_RIGHT; 6008 case KeyEvent.KEYCODE_DPAD_DOWN: 6009 return SoundEffectConstants.NAVIGATION_DOWN; 6010 case KeyEvent.KEYCODE_DPAD_LEFT: 6011 return SoundEffectConstants.NAVIGATION_LEFT; 6012 } 6013 throw new IllegalArgumentException("keyCode must be one of " + 6014 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6015 "KEYCODE_DPAD_LEFT}."); 6016 } 6017 6018 private void doTrackball(long time, int metaState) { 6019 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6020 if (elapsed == 0) { 6021 elapsed = TRACKBALL_TIMEOUT; 6022 } 6023 float xRate = mTrackballRemainsX * 1000 / elapsed; 6024 float yRate = mTrackballRemainsY * 1000 / elapsed; 6025 int viewWidth = getViewWidth(); 6026 int viewHeight = getViewHeight(); 6027 if (mSelectingText) { 6028 if (!mDrawSelectionPointer) { 6029 // The last selection was made by touch, disabling drawing the 6030 // selection pointer. Allow the trackball to adjust the 6031 // position of the touch control. 6032 mSelectX = contentToViewX(nativeSelectionX()); 6033 mSelectY = contentToViewY(nativeSelectionY()); 6034 mDrawSelectionPointer = mExtendSelection = true; 6035 nativeSetExtendSelection(); 6036 } 6037 moveSelection(scaleTrackballX(xRate, viewWidth), 6038 scaleTrackballY(yRate, viewHeight)); 6039 mTrackballRemainsX = mTrackballRemainsY = 0; 6040 return; 6041 } 6042 float ax = Math.abs(xRate); 6043 float ay = Math.abs(yRate); 6044 float maxA = Math.max(ax, ay); 6045 if (DebugFlags.WEB_VIEW) { 6046 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6047 + " xRate=" + xRate 6048 + " yRate=" + yRate 6049 + " mTrackballRemainsX=" + mTrackballRemainsX 6050 + " mTrackballRemainsY=" + mTrackballRemainsY); 6051 } 6052 int width = mContentWidth - viewWidth; 6053 int height = mContentHeight - viewHeight; 6054 if (width < 0) width = 0; 6055 if (height < 0) height = 0; 6056 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6057 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6058 maxA = Math.max(ax, ay); 6059 int count = Math.max(0, (int) maxA); 6060 int oldScrollX = mScrollX; 6061 int oldScrollY = mScrollY; 6062 if (count > 0) { 6063 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6064 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6065 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6066 KeyEvent.KEYCODE_DPAD_RIGHT; 6067 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6068 if (DebugFlags.WEB_VIEW) { 6069 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6070 + " count=" + count 6071 + " mTrackballRemainsX=" + mTrackballRemainsX 6072 + " mTrackballRemainsY=" + mTrackballRemainsY); 6073 } 6074 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6075 for (int i = 0; i < count; i++) { 6076 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6077 } 6078 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6079 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6080 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6081 } 6082 mTrackballRemainsX = mTrackballRemainsY = 0; 6083 } 6084 if (count >= TRACKBALL_SCROLL_COUNT) { 6085 int xMove = scaleTrackballX(xRate, width); 6086 int yMove = scaleTrackballY(yRate, height); 6087 if (DebugFlags.WEB_VIEW) { 6088 Log.v(LOGTAG, "doTrackball pinScrollBy" 6089 + " count=" + count 6090 + " xMove=" + xMove + " yMove=" + yMove 6091 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6092 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6093 ); 6094 } 6095 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6096 xMove = 0; 6097 } 6098 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6099 yMove = 0; 6100 } 6101 if (xMove != 0 || yMove != 0) { 6102 pinScrollBy(xMove, yMove, true, 0); 6103 } 6104 mUserScroll = true; 6105 } 6106 } 6107 6108 /** 6109 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6110 * @return Maximum horizontal scroll position within real content 6111 */ 6112 int computeMaxScrollX() { 6113 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6114 } 6115 6116 /** 6117 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6118 * @return Maximum vertical scroll position within real content 6119 */ 6120 int computeMaxScrollY() { 6121 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6122 - getViewHeightWithTitle(), 0); 6123 } 6124 6125 boolean updateScrollCoordinates(int x, int y) { 6126 int oldX = mScrollX; 6127 int oldY = mScrollY; 6128 mScrollX = x; 6129 mScrollY = y; 6130 if (oldX != mScrollX || oldY != mScrollY) { 6131 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6132 return true; 6133 } else { 6134 return false; 6135 } 6136 } 6137 6138 public void flingScroll(int vx, int vy) { 6139 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6140 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6141 invalidate(); 6142 } 6143 6144 private void doFling() { 6145 if (mVelocityTracker == null) { 6146 return; 6147 } 6148 int maxX = computeMaxScrollX(); 6149 int maxY = computeMaxScrollY(); 6150 6151 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6152 int vx = (int) mVelocityTracker.getXVelocity(); 6153 int vy = (int) mVelocityTracker.getYVelocity(); 6154 6155 int scrollX = mScrollX; 6156 int scrollY = mScrollY; 6157 int overscrollDistance = mOverscrollDistance; 6158 int overflingDistance = mOverflingDistance; 6159 6160 // Use the layer's scroll data if applicable. 6161 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6162 scrollX = mScrollingLayerRect.left; 6163 scrollY = mScrollingLayerRect.top; 6164 maxX = mScrollingLayerRect.right; 6165 maxY = mScrollingLayerRect.bottom; 6166 // No overscrolling for layers. 6167 overscrollDistance = overflingDistance = 0; 6168 } 6169 6170 if (mSnapScrollMode != SNAP_NONE) { 6171 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6172 vy = 0; 6173 } else { 6174 vx = 0; 6175 } 6176 } 6177 if (true /* EMG release: make our fling more like Maps' */) { 6178 // maps cuts their velocity in half 6179 vx = vx * 3 / 4; 6180 vy = vy * 3 / 4; 6181 } 6182 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6183 WebViewCore.resumePriority(); 6184 if (!mSelectingText) { 6185 WebViewCore.resumeUpdatePicture(mWebViewCore); 6186 } 6187 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6188 invalidate(); 6189 } 6190 return; 6191 } 6192 float currentVelocity = mScroller.getCurrVelocity(); 6193 float velocity = (float) Math.hypot(vx, vy); 6194 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6195 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6196 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6197 - Math.atan2(vy, vx))); 6198 final float circle = (float) (Math.PI) * 2.0f; 6199 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6200 vx += currentVelocity * mLastVelX / mLastVelocity; 6201 vy += currentVelocity * mLastVelY / mLastVelocity; 6202 velocity = (float) Math.hypot(vx, vy); 6203 if (DebugFlags.WEB_VIEW) { 6204 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6205 } 6206 } else if (DebugFlags.WEB_VIEW) { 6207 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6208 } 6209 } else if (DebugFlags.WEB_VIEW) { 6210 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6211 + " current=" + currentVelocity 6212 + " vx=" + vx + " vy=" + vy 6213 + " maxX=" + maxX + " maxY=" + maxY 6214 + " scrollX=" + scrollX + " scrollY=" + scrollY 6215 + " layer=" + mScrollingLayer); 6216 } 6217 6218 // Allow sloppy flings without overscrolling at the edges. 6219 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6220 vx = 0; 6221 } 6222 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6223 vy = 0; 6224 } 6225 6226 if (overscrollDistance < overflingDistance) { 6227 if ((vx > 0 && scrollX == -overscrollDistance) || 6228 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6229 vx = 0; 6230 } 6231 if ((vy > 0 && scrollY == -overscrollDistance) || 6232 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6233 vy = 0; 6234 } 6235 } 6236 6237 mLastVelX = vx; 6238 mLastVelY = vy; 6239 mLastVelocity = velocity; 6240 6241 // no horizontal overscroll if the content just fits 6242 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6243 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6244 // Duration is calculated based on velocity. With range boundaries and overscroll 6245 // we may not know how long the final animation will take. (Hence the deprecation 6246 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6247 // resumes during this effect we will take a performance hit. See computeScroll; 6248 // we resume webcore there when the animation is finished. 6249 final int time = mScroller.getDuration(); 6250 6251 // Suppress scrollbars for layer scrolling. 6252 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6253 awakenScrollBars(time); 6254 } 6255 6256 invalidate(); 6257 } 6258 6259 /** 6260 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6261 * in charge of installing this view to the view hierarchy. This view will 6262 * become visible when the user starts scrolling via touch and fade away if 6263 * the user does not interact with it. 6264 * <p/> 6265 * API version 3 introduces a built-in zoom mechanism that is shown 6266 * automatically by the MapView. This is the preferred approach for 6267 * showing the zoom UI. 6268 * 6269 * @deprecated The built-in zoom mechanism is preferred, see 6270 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6271 */ 6272 @Deprecated 6273 public View getZoomControls() { 6274 if (!getSettings().supportZoom()) { 6275 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6276 return null; 6277 } 6278 return mZoomManager.getExternalZoomPicker(); 6279 } 6280 6281 void dismissZoomControl() { 6282 mZoomManager.dismissZoomPicker(); 6283 } 6284 6285 float getDefaultZoomScale() { 6286 return mZoomManager.getDefaultScale(); 6287 } 6288 6289 /** 6290 * @return TRUE if the WebView can be zoomed in. 6291 */ 6292 public boolean canZoomIn() { 6293 return mZoomManager.canZoomIn(); 6294 } 6295 6296 /** 6297 * @return TRUE if the WebView can be zoomed out. 6298 */ 6299 public boolean canZoomOut() { 6300 return mZoomManager.canZoomOut(); 6301 } 6302 6303 /** 6304 * Perform zoom in in the webview 6305 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6306 */ 6307 public boolean zoomIn() { 6308 return mZoomManager.zoomIn(); 6309 } 6310 6311 /** 6312 * Perform zoom out in the webview 6313 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6314 */ 6315 public boolean zoomOut() { 6316 return mZoomManager.zoomOut(); 6317 } 6318 6319 private void updateSelection() { 6320 if (mNativeClass == 0) { 6321 return; 6322 } 6323 // mLastTouchX and mLastTouchY are the point in the current viewport 6324 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6325 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6326 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 6327 contentX + mNavSlop, contentY + mNavSlop); 6328 nativeSelectBestAt(rect); 6329 mInitialHitTestResult = hitTestResult(null); 6330 } 6331 6332 /** 6333 * Scroll the focused text field/area to match the WebTextView 6334 * @param xPercent New x position of the WebTextView from 0 to 1. 6335 * @param y New y position of the WebTextView in view coordinates 6336 */ 6337 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 6338 if (!inEditingMode() || mWebViewCore == null) { 6339 return; 6340 } 6341 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 6342 // Since this position is relative to the top of the text input 6343 // field, we do not need to take the title bar's height into 6344 // consideration. 6345 viewToContentDimension(y), 6346 new Float(xPercent)); 6347 } 6348 6349 /** 6350 * Set our starting point and time for a drag from the WebTextView. 6351 */ 6352 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6353 if (!inEditingMode()) { 6354 return; 6355 } 6356 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 6357 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 6358 mLastTouchTime = eventTime; 6359 if (!mScroller.isFinished()) { 6360 abortAnimation(); 6361 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6362 } 6363 mSnapScrollMode = SNAP_NONE; 6364 mVelocityTracker = VelocityTracker.obtain(); 6365 mTouchMode = TOUCH_DRAG_START_MODE; 6366 } 6367 6368 /** 6369 * Given a motion event from the WebTextView, set its location to our 6370 * coordinates, and handle the event. 6371 */ 6372 /*package*/ boolean textFieldDrag(MotionEvent event) { 6373 if (!inEditingMode()) { 6374 return false; 6375 } 6376 mDragFromTextInput = true; 6377 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6378 (float) (mWebTextView.getTop() - mScrollY)); 6379 boolean result = onTouchEvent(event); 6380 mDragFromTextInput = false; 6381 return result; 6382 } 6383 6384 /** 6385 * Due a touch up from a WebTextView. This will be handled by webkit to 6386 * change the selection. 6387 * @param event MotionEvent in the WebTextView's coordinates. 6388 */ 6389 /*package*/ void touchUpOnTextField(MotionEvent event) { 6390 if (!inEditingMode()) { 6391 return; 6392 } 6393 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6394 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6395 nativeMotionUp(x, y, mNavSlop); 6396 } 6397 6398 /** 6399 * Called when pressing the center key or trackball on a textfield. 6400 */ 6401 /*package*/ void centerKeyPressOnTextField() { 6402 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6403 nativeCursorNodePointer()); 6404 } 6405 6406 private void doShortPress() { 6407 if (mNativeClass == 0) { 6408 return; 6409 } 6410 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6411 return; 6412 } 6413 mTouchMode = TOUCH_DONE_MODE; 6414 switchOutDrawHistory(); 6415 // mLastTouchX and mLastTouchY are the point in the current viewport 6416 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6417 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6418 if (getSettings().supportTouchOnly()) { 6419 removeTouchHighlight(false); 6420 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6421 // use "0" as generation id to inform WebKit to use the same x/y as 6422 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6423 touchUpData.mMoveGeneration = 0; 6424 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6425 } else if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6426 WebViewCore.MotionUpData motionUpData = new WebViewCore 6427 .MotionUpData(); 6428 motionUpData.mFrame = nativeCacheHitFramePointer(); 6429 motionUpData.mNode = nativeCacheHitNodePointer(); 6430 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6431 motionUpData.mX = contentX; 6432 motionUpData.mY = contentY; 6433 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6434 motionUpData); 6435 } else { 6436 doMotionUp(contentX, contentY); 6437 } 6438 } 6439 6440 private void doMotionUp(int contentX, int contentY) { 6441 if (nativeMotionUp(contentX, contentY, mNavSlop) && mLogEvent) { 6442 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6443 } 6444 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6445 playSoundEffect(SoundEffectConstants.CLICK); 6446 } 6447 } 6448 6449 /* 6450 * Return true if the view (Plugin) is fully visible and maximized inside 6451 * the WebView. 6452 */ 6453 boolean isPluginFitOnScreen(ViewManager.ChildView view) { 6454 final int viewWidth = getViewWidth(); 6455 final int viewHeight = getViewHeightWithTitle(); 6456 float scale = Math.min((float) viewWidth / view.width, (float) viewHeight / view.height); 6457 scale = mZoomManager.computeScaleWithLimits(scale); 6458 return !mZoomManager.willScaleTriggerZoom(scale) 6459 && contentToViewX(view.x) >= mScrollX 6460 && contentToViewX(view.x + view.width) <= mScrollX + viewWidth 6461 && contentToViewY(view.y) >= mScrollY 6462 && contentToViewY(view.y + view.height) <= mScrollY + viewHeight; 6463 } 6464 6465 /* 6466 * Maximize and center the rectangle, specified in the document coordinate 6467 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6468 * animated scroll to center it. If the zoom needs to be changed, find the 6469 * zoom center and do a smooth zoom transition. 6470 */ 6471 void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 6472 int viewWidth = getViewWidth(); 6473 int viewHeight = getViewHeightWithTitle(); 6474 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 6475 / docHeight); 6476 scale = mZoomManager.computeScaleWithLimits(scale); 6477 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6478 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 6479 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 6480 true, 0); 6481 } else { 6482 float actualScale = mZoomManager.getScale(); 6483 float oldScreenX = docX * actualScale - mScrollX; 6484 float rectViewX = docX * scale; 6485 float rectViewWidth = docWidth * scale; 6486 float newMaxWidth = mContentWidth * scale; 6487 float newScreenX = (viewWidth - rectViewWidth) / 2; 6488 // pin the newX to the WebView 6489 if (newScreenX > rectViewX) { 6490 newScreenX = rectViewX; 6491 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6492 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6493 } 6494 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6495 / (scale - actualScale); 6496 float oldScreenY = docY * actualScale + getTitleHeight() 6497 - mScrollY; 6498 float rectViewY = docY * scale + getTitleHeight(); 6499 float rectViewHeight = docHeight * scale; 6500 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6501 float newScreenY = (viewHeight - rectViewHeight) / 2; 6502 // pin the newY to the WebView 6503 if (newScreenY > rectViewY) { 6504 newScreenY = rectViewY; 6505 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6506 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6507 } 6508 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6509 / (scale - actualScale); 6510 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6511 mZoomManager.startZoomAnimation(scale, false); 6512 } 6513 } 6514 6515 // Called by JNI to handle a touch on a node representing an email address, 6516 // address, or phone number 6517 private void overrideLoading(String url) { 6518 mCallbackProxy.uiOverrideUrlLoading(url); 6519 } 6520 6521 @Override 6522 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6523 // FIXME: If a subwindow is showing find, and the user touches the 6524 // background window, it can steal focus. 6525 if (mFindIsUp) return false; 6526 boolean result = false; 6527 if (inEditingMode()) { 6528 result = mWebTextView.requestFocus(direction, 6529 previouslyFocusedRect); 6530 } else { 6531 result = super.requestFocus(direction, previouslyFocusedRect); 6532 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6533 // For cases such as GMail, where we gain focus from a direction, 6534 // we want to move to the first available link. 6535 // FIXME: If there are no visible links, we may not want to 6536 int fakeKeyDirection = 0; 6537 switch(direction) { 6538 case View.FOCUS_UP: 6539 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6540 break; 6541 case View.FOCUS_DOWN: 6542 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6543 break; 6544 case View.FOCUS_LEFT: 6545 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6546 break; 6547 case View.FOCUS_RIGHT: 6548 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6549 break; 6550 default: 6551 return result; 6552 } 6553 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6554 navHandledKey(fakeKeyDirection, 1, true, 0); 6555 } 6556 } 6557 } 6558 return result; 6559 } 6560 6561 @Override 6562 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6563 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6564 6565 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6566 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6567 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6568 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6569 6570 int measuredHeight = heightSize; 6571 int measuredWidth = widthSize; 6572 6573 // Grab the content size from WebViewCore. 6574 int contentHeight = contentToViewDimension(mContentHeight); 6575 int contentWidth = contentToViewDimension(mContentWidth); 6576 6577// Log.d(LOGTAG, "------- measure " + heightMode); 6578 6579 if (heightMode != MeasureSpec.EXACTLY) { 6580 mHeightCanMeasure = true; 6581 measuredHeight = contentHeight; 6582 if (heightMode == MeasureSpec.AT_MOST) { 6583 // If we are larger than the AT_MOST height, then our height can 6584 // no longer be measured and we should scroll internally. 6585 if (measuredHeight > heightSize) { 6586 measuredHeight = heightSize; 6587 mHeightCanMeasure = false; 6588 } else if (measuredHeight < heightSize) { 6589 measuredHeight |= MEASURED_STATE_TOO_SMALL; 6590 } 6591 } 6592 } else { 6593 mHeightCanMeasure = false; 6594 } 6595 if (mNativeClass != 0) { 6596 nativeSetHeightCanMeasure(mHeightCanMeasure); 6597 } 6598 // For the width, always use the given size unless unspecified. 6599 if (widthMode == MeasureSpec.UNSPECIFIED) { 6600 mWidthCanMeasure = true; 6601 measuredWidth = contentWidth; 6602 } else { 6603 if (measuredWidth < contentWidth) { 6604 measuredWidth |= MEASURED_STATE_TOO_SMALL; 6605 } 6606 mWidthCanMeasure = false; 6607 } 6608 6609 synchronized (this) { 6610 setMeasuredDimension(measuredWidth, measuredHeight); 6611 } 6612 } 6613 6614 @Override 6615 public boolean requestChildRectangleOnScreen(View child, 6616 Rect rect, 6617 boolean immediate) { 6618 if (mNativeClass == 0) { 6619 return false; 6620 } 6621 // don't scroll while in zoom animation. When it is done, we will adjust 6622 // the necessary components (e.g., WebTextView if it is in editing mode) 6623 if (mZoomManager.isFixedLengthAnimationInProgress()) { 6624 return false; 6625 } 6626 6627 rect.offset(child.getLeft() - child.getScrollX(), 6628 child.getTop() - child.getScrollY()); 6629 6630 Rect content = new Rect(viewToContentX(mScrollX), 6631 viewToContentY(mScrollY), 6632 viewToContentX(mScrollX + getWidth() 6633 - getVerticalScrollbarWidth()), 6634 viewToContentY(mScrollY + getViewHeightWithTitle())); 6635 content = nativeSubtractLayers(content); 6636 int screenTop = contentToViewY(content.top); 6637 int screenBottom = contentToViewY(content.bottom); 6638 int height = screenBottom - screenTop; 6639 int scrollYDelta = 0; 6640 6641 if (rect.bottom > screenBottom) { 6642 int oneThirdOfScreenHeight = height / 3; 6643 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6644 // If the rectangle is too tall to fit in the bottom two thirds 6645 // of the screen, place it at the top. 6646 scrollYDelta = rect.top - screenTop; 6647 } else { 6648 // If the rectangle will still fit on screen, we want its 6649 // top to be in the top third of the screen. 6650 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6651 } 6652 } else if (rect.top < screenTop) { 6653 scrollYDelta = rect.top - screenTop; 6654 } 6655 6656 int screenLeft = contentToViewX(content.left); 6657 int screenRight = contentToViewX(content.right); 6658 int width = screenRight - screenLeft; 6659 int scrollXDelta = 0; 6660 6661 if (rect.right > screenRight && rect.left > screenLeft) { 6662 if (rect.width() > width) { 6663 scrollXDelta += (rect.left - screenLeft); 6664 } else { 6665 scrollXDelta += (rect.right - screenRight); 6666 } 6667 } else if (rect.left < screenLeft) { 6668 scrollXDelta -= (screenLeft - rect.left); 6669 } 6670 6671 if ((scrollYDelta | scrollXDelta) != 0) { 6672 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6673 } 6674 6675 return false; 6676 } 6677 6678 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6679 String replace, int newStart, int newEnd) { 6680 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6681 arg.mReplace = replace; 6682 arg.mNewStart = newStart; 6683 arg.mNewEnd = newEnd; 6684 mTextGeneration++; 6685 arg.mTextGeneration = mTextGeneration; 6686 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6687 } 6688 6689 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6690 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6691 arg.mEvent = event; 6692 arg.mCurrentText = currentText; 6693 // Increase our text generation number, and pass it to webcore thread 6694 mTextGeneration++; 6695 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6696 // WebKit's document state is not saved until about to leave the page. 6697 // To make sure the host application, like Browser, has the up to date 6698 // document state when it goes to background, we force to save the 6699 // document state. 6700 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6701 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6702 cursorData(), 1000); 6703 } 6704 6705 /* package */ synchronized WebViewCore getWebViewCore() { 6706 return mWebViewCore; 6707 } 6708 6709 //------------------------------------------------------------------------- 6710 // Methods can be called from a separate thread, like WebViewCore 6711 // If it needs to call the View system, it has to send message. 6712 //------------------------------------------------------------------------- 6713 6714 /** 6715 * General handler to receive message coming from webkit thread 6716 */ 6717 class PrivateHandler extends Handler { 6718 @Override 6719 public void handleMessage(Message msg) { 6720 // exclude INVAL_RECT_MSG_ID since it is frequently output 6721 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6722 if (msg.what >= FIRST_PRIVATE_MSG_ID 6723 && msg.what <= LAST_PRIVATE_MSG_ID) { 6724 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6725 - FIRST_PRIVATE_MSG_ID]); 6726 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6727 && msg.what <= LAST_PACKAGE_MSG_ID) { 6728 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6729 - FIRST_PACKAGE_MSG_ID]); 6730 } else { 6731 Log.v(LOGTAG, Integer.toString(msg.what)); 6732 } 6733 } 6734 if (mWebViewCore == null) { 6735 // after WebView's destroy() is called, skip handling messages. 6736 return; 6737 } 6738 switch (msg.what) { 6739 case REMEMBER_PASSWORD: { 6740 mDatabase.setUsernamePassword( 6741 msg.getData().getString("host"), 6742 msg.getData().getString("username"), 6743 msg.getData().getString("password")); 6744 ((Message) msg.obj).sendToTarget(); 6745 break; 6746 } 6747 case NEVER_REMEMBER_PASSWORD: { 6748 mDatabase.setUsernamePassword( 6749 msg.getData().getString("host"), null, null); 6750 ((Message) msg.obj).sendToTarget(); 6751 break; 6752 } 6753 case PREVENT_DEFAULT_TIMEOUT: { 6754 // if timeout happens, cancel it so that it won't block UI 6755 // to continue handling touch events 6756 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6757 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6758 || (msg.arg1 == MotionEvent.ACTION_MOVE 6759 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6760 cancelWebCoreTouchEvent( 6761 viewToContentX((int) mLastTouchX + mScrollX), 6762 viewToContentY((int) mLastTouchY + mScrollY), 6763 true); 6764 } 6765 break; 6766 } 6767 case SCROLL_SELECT_TEXT: { 6768 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 6769 mSentAutoScrollMessage = false; 6770 break; 6771 } 6772 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 6773 sendEmptyMessageDelayed( 6774 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 6775 break; 6776 } 6777 case SWITCH_TO_SHORTPRESS: { 6778 mInitialHitTestResult = null; // set by updateSelection() 6779 if (mTouchMode == TOUCH_INIT_MODE) { 6780 if (!getSettings().supportTouchOnly() 6781 && mPreventDefault != PREVENT_DEFAULT_YES) { 6782 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6783 updateSelection(); 6784 } else { 6785 // set to TOUCH_SHORTPRESS_MODE so that it won't 6786 // trigger double tap any more 6787 mTouchMode = TOUCH_SHORTPRESS_MODE; 6788 } 6789 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6790 mTouchMode = TOUCH_DONE_MODE; 6791 } 6792 break; 6793 } 6794 case SWITCH_TO_LONGPRESS: { 6795 if (getSettings().supportTouchOnly()) { 6796 removeTouchHighlight(false); 6797 } 6798 if (inFullScreenMode() || mDeferTouchProcess) { 6799 TouchEventData ted = new TouchEventData(); 6800 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6801 ted.mPoints = new Point[1]; 6802 ted.mPoints[0] = new Point(viewToContentX((int) mLastTouchX + mScrollX), 6803 viewToContentY((int) mLastTouchY + mScrollY)); 6804 // metaState for long press is tricky. Should it be the 6805 // state when the press started or when the press was 6806 // released? Or some intermediary key state? For 6807 // simplicity for now, we don't set it. 6808 ted.mMetaState = 0; 6809 ted.mReprocess = mDeferTouchProcess; 6810 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6811 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6812 mTouchMode = TOUCH_DONE_MODE; 6813 performLongClick(); 6814 } 6815 break; 6816 } 6817 case RELEASE_SINGLE_TAP: { 6818 doShortPress(); 6819 break; 6820 } 6821 case SCROLL_BY_MSG_ID: 6822 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6823 break; 6824 case SYNC_SCROLL_TO_MSG_ID: 6825 if (mUserScroll) { 6826 // if user has scrolled explicitly, don't sync the 6827 // scroll position any more 6828 mUserScroll = false; 6829 break; 6830 } 6831 setContentScrollTo(msg.arg1, msg.arg2); 6832 break; 6833 case SCROLL_TO_MSG_ID: 6834 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6835 // if we can't scroll to the exact position due to pin, 6836 // send a message to WebCore to re-scroll when we get a 6837 // new picture 6838 mUserScroll = false; 6839 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6840 msg.arg1, msg.arg2); 6841 } 6842 break; 6843 case SPAWN_SCROLL_TO_MSG_ID: 6844 spawnContentScrollTo(msg.arg1, msg.arg2); 6845 break; 6846 case UPDATE_ZOOM_RANGE: { 6847 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 6848 // mScrollX contains the new minPrefWidth 6849 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 6850 break; 6851 } 6852 case REPLACE_BASE_CONTENT: { 6853 nativeReplaceBaseContent(msg.arg1); 6854 break; 6855 } 6856 case NEW_PICTURE_MSG_ID: { 6857 // called for new content 6858 mUserScroll = false; 6859 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 6860 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion.getBounds()); 6861 final Point viewSize = draw.mViewSize; 6862 WebViewCore.ViewState viewState = draw.mViewState; 6863 boolean isPictureAfterFirstLayout = viewState != null; 6864 if (isPictureAfterFirstLayout) { 6865 // Reset the last sent data here since dealing with new page. 6866 mLastWidthSent = 0; 6867 mZoomManager.onFirstLayout(draw); 6868 if (!mDrawHistory) { 6869 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 6870 // As we are on a new page, remove the WebTextView. This 6871 // is necessary for page loads driven by webkit, and in 6872 // particular when the user was on a password field, so 6873 // the WebTextView was visible. 6874 clearTextEntry(); 6875 } 6876 } 6877 6878 // We update the layout (i.e. request a layout from the 6879 // view system) if the last view size that we sent to 6880 // WebCore matches the view size of the picture we just 6881 // received in the fixed dimension. 6882 final boolean updateLayout = viewSize.x == mLastWidthSent 6883 && viewSize.y == mLastHeightSent; 6884 recordNewContentSize(draw.mContentSize.x, 6885 draw.mContentSize.y, updateLayout); 6886 if (DebugFlags.WEB_VIEW) { 6887 Rect b = draw.mInvalRegion.getBounds(); 6888 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6889 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6890 } 6891 invalidateContentRect(draw.mInvalRegion.getBounds()); 6892 6893 if (mPictureListener != null) { 6894 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6895 } 6896 6897 // update the zoom information based on the new picture 6898 mZoomManager.onNewPicture(draw); 6899 6900 if (draw.mFocusSizeChanged && inEditingMode()) { 6901 mFocusSizeChanged = true; 6902 } 6903 if (isPictureAfterFirstLayout) { 6904 mViewManager.postReadyToDrawAll(); 6905 } 6906 break; 6907 } 6908 case WEBCORE_INITIALIZED_MSG_ID: 6909 // nativeCreate sets mNativeClass to a non-zero value 6910 nativeCreate(msg.arg1); 6911 break; 6912 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6913 // Make sure that the textfield is currently focused 6914 // and representing the same node as the pointer. 6915 if (inEditingMode() && 6916 mWebTextView.isSameTextField(msg.arg1)) { 6917 if (msg.getData().getBoolean("password")) { 6918 Spannable text = (Spannable) mWebTextView.getText(); 6919 int start = Selection.getSelectionStart(text); 6920 int end = Selection.getSelectionEnd(text); 6921 mWebTextView.setInPassword(true); 6922 // Restore the selection, which may have been 6923 // ruined by setInPassword. 6924 Spannable pword = 6925 (Spannable) mWebTextView.getText(); 6926 Selection.setSelection(pword, start, end); 6927 // If the text entry has created more events, ignore 6928 // this one. 6929 } else if (msg.arg2 == mTextGeneration) { 6930 String text = (String) msg.obj; 6931 if (null == text) { 6932 text = ""; 6933 } 6934 mWebTextView.setTextAndKeepSelection(text); 6935 } 6936 } 6937 break; 6938 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6939 displaySoftKeyboard(true); 6940 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 6941 case UPDATE_TEXT_SELECTION_MSG_ID: 6942 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6943 (WebViewCore.TextSelectionData) msg.obj); 6944 break; 6945 case FORM_DID_BLUR: 6946 if (inEditingMode() 6947 && mWebTextView.isSameTextField(msg.arg1)) { 6948 hideSoftKeyboard(); 6949 } 6950 break; 6951 case RETURN_LABEL: 6952 if (inEditingMode() 6953 && mWebTextView.isSameTextField(msg.arg1)) { 6954 mWebTextView.setHint((String) msg.obj); 6955 InputMethodManager imm 6956 = InputMethodManager.peekInstance(); 6957 // The hint is propagated to the IME in 6958 // onCreateInputConnection. If the IME is already 6959 // active, restart it so that its hint text is updated. 6960 if (imm != null && imm.isActive(mWebTextView)) { 6961 imm.restartInput(mWebTextView); 6962 } 6963 } 6964 break; 6965 case UNHANDLED_NAV_KEY: 6966 navHandledKey(msg.arg1, 1, false, 0); 6967 break; 6968 case UPDATE_TEXT_ENTRY_MSG_ID: 6969 // this is sent after finishing resize in WebViewCore. Make 6970 // sure the text edit box is still on the screen. 6971 if (inEditingMode() && nativeCursorIsTextInput()) { 6972 mWebTextView.bringIntoView(); 6973 rebuildWebTextView(); 6974 } 6975 break; 6976 case CLEAR_TEXT_ENTRY: 6977 clearTextEntry(); 6978 break; 6979 case INVAL_RECT_MSG_ID: { 6980 Rect r = (Rect)msg.obj; 6981 if (r == null) { 6982 invalidate(); 6983 } else { 6984 // we need to scale r from content into view coords, 6985 // which viewInvalidate() does for us 6986 viewInvalidate(r.left, r.top, r.right, r.bottom); 6987 } 6988 break; 6989 } 6990 case REQUEST_FORM_DATA: 6991 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6992 if (mWebTextView.isSameTextField(msg.arg1)) { 6993 mWebTextView.setAdapterCustom(adapter); 6994 } 6995 break; 6996 case RESUME_WEBCORE_PRIORITY: 6997 WebViewCore.resumePriority(); 6998 WebViewCore.resumeUpdatePicture(mWebViewCore); 6999 break; 7000 7001 case LONG_PRESS_CENTER: 7002 // as this is shared by keydown and trackballdown, reset all 7003 // the states 7004 mGotCenterDown = false; 7005 mTrackballDown = false; 7006 performLongClick(); 7007 break; 7008 7009 case WEBCORE_NEED_TOUCH_EVENTS: 7010 mForwardTouchEvents = (msg.arg1 != 0); 7011 break; 7012 7013 case PREVENT_TOUCH_ID: 7014 if (inFullScreenMode()) { 7015 break; 7016 } 7017 if (msg.obj == null) { 7018 if (msg.arg1 == MotionEvent.ACTION_DOWN 7019 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7020 // if prevent default is called from WebCore, UI 7021 // will not handle the rest of the touch events any 7022 // more. 7023 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7024 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7025 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 7026 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7027 // the return for the first ACTION_MOVE will decide 7028 // whether UI will handle touch or not. Currently no 7029 // support for alternating prevent default 7030 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7031 : PREVENT_DEFAULT_NO; 7032 } 7033 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7034 mTouchHighlightRegion.setEmpty(); 7035 } 7036 } else if (msg.arg2 == 0) { 7037 // prevent default is not called in WebCore, so the 7038 // message needs to be reprocessed in UI 7039 TouchEventData ted = (TouchEventData) msg.obj; 7040 switch (ted.mAction) { 7041 case MotionEvent.ACTION_DOWN: 7042 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 7043 - mScrollX; 7044 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 7045 - mScrollY; 7046 mDeferTouchMode = TOUCH_INIT_MODE; 7047 break; 7048 case MotionEvent.ACTION_MOVE: { 7049 // no snapping in defer process 7050 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 7051 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 7052 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7053 mDeferTouchMode = TOUCH_DRAG_MODE; 7054 mLastDeferTouchX = x; 7055 mLastDeferTouchY = y; 7056 startScrollingLayer(x, y); 7057 startDrag(); 7058 } 7059 int deltaX = pinLocX((int) (mScrollX 7060 + mLastDeferTouchX - x)) 7061 - mScrollX; 7062 int deltaY = pinLocY((int) (mScrollY 7063 + mLastDeferTouchY - y)) 7064 - mScrollY; 7065 doDrag(deltaX, deltaY); 7066 if (deltaX != 0) mLastDeferTouchX = x; 7067 if (deltaY != 0) mLastDeferTouchY = y; 7068 break; 7069 } 7070 case MotionEvent.ACTION_UP: 7071 case MotionEvent.ACTION_CANCEL: 7072 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7073 // no fling in defer process 7074 mScroller.springBack(mScrollX, mScrollY, 0, 7075 computeMaxScrollX(), 0, 7076 computeMaxScrollY()); 7077 invalidate(); 7078 WebViewCore.resumePriority(); 7079 WebViewCore.resumeUpdatePicture(mWebViewCore); 7080 } 7081 mDeferTouchMode = TOUCH_DONE_MODE; 7082 break; 7083 case WebViewCore.ACTION_DOUBLETAP: 7084 // doDoubleTap() needs mLastTouchX/Y as anchor 7085 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 7086 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 7087 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7088 mDeferTouchMode = TOUCH_DONE_MODE; 7089 break; 7090 case WebViewCore.ACTION_LONGPRESS: 7091 HitTestResult hitTest = getHitTestResult(); 7092 if (hitTest != null && hitTest.mType 7093 != HitTestResult.UNKNOWN_TYPE) { 7094 performLongClick(); 7095 } 7096 mDeferTouchMode = TOUCH_DONE_MODE; 7097 break; 7098 } 7099 } 7100 break; 7101 7102 case REQUEST_KEYBOARD: 7103 if (msg.arg1 == 0) { 7104 hideSoftKeyboard(); 7105 } else { 7106 displaySoftKeyboard(false); 7107 } 7108 break; 7109 7110 case FIND_AGAIN: 7111 // Ignore if find has been dismissed. 7112 if (mFindIsUp && mFindCallback != null) { 7113 mFindCallback.findAll(); 7114 } 7115 break; 7116 7117 case DRAG_HELD_MOTIONLESS: 7118 mHeldMotionless = MOTIONLESS_TRUE; 7119 invalidate(); 7120 // fall through to keep scrollbars awake 7121 7122 case AWAKEN_SCROLL_BARS: 7123 if (mTouchMode == TOUCH_DRAG_MODE 7124 && mHeldMotionless == MOTIONLESS_TRUE) { 7125 awakenScrollBars(ViewConfiguration 7126 .getScrollDefaultDelay(), false); 7127 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7128 .obtainMessage(AWAKEN_SCROLL_BARS), 7129 ViewConfiguration.getScrollDefaultDelay()); 7130 } 7131 break; 7132 7133 case DO_MOTION_UP: 7134 doMotionUp(msg.arg1, msg.arg2); 7135 break; 7136 7137 case SHOW_FULLSCREEN: { 7138 View view = (View) msg.obj; 7139 int npp = msg.arg1; 7140 7141 if (inFullScreenMode()) { 7142 Log.w(LOGTAG, "Should not have another full screen."); 7143 dismissFullScreenMode(); 7144 } 7145 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7146 mFullScreenHolder.setContentView(view); 7147 mFullScreenHolder.setCancelable(false); 7148 mFullScreenHolder.setCanceledOnTouchOutside(false); 7149 mFullScreenHolder.show(); 7150 7151 break; 7152 } 7153 case HIDE_FULLSCREEN: 7154 dismissFullScreenMode(); 7155 break; 7156 7157 case DOM_FOCUS_CHANGED: 7158 if (inEditingMode()) { 7159 nativeClearCursor(); 7160 rebuildWebTextView(); 7161 } 7162 break; 7163 7164 case SHOW_RECT_MSG_ID: { 7165 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7166 int x = mScrollX; 7167 int left = contentToViewX(data.mLeft); 7168 int width = contentToViewDimension(data.mWidth); 7169 int maxWidth = contentToViewDimension(data.mContentWidth); 7170 int viewWidth = getViewWidth(); 7171 if (width < viewWidth) { 7172 // center align 7173 x += left + width / 2 - mScrollX - viewWidth / 2; 7174 } else { 7175 x += (int) (left + data.mXPercentInDoc * width 7176 - mScrollX - data.mXPercentInView * viewWidth); 7177 } 7178 if (DebugFlags.WEB_VIEW) { 7179 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7180 width + ",maxWidth=" + maxWidth + 7181 ",viewWidth=" + viewWidth + ",x=" 7182 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7183 ",xPercentInView=" + data.mXPercentInView+ ")"); 7184 } 7185 // use the passing content width to cap x as the current 7186 // mContentWidth may not be updated yet 7187 x = Math.max(0, 7188 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7189 int top = contentToViewY(data.mTop); 7190 int height = contentToViewDimension(data.mHeight); 7191 int maxHeight = contentToViewDimension(data.mContentHeight); 7192 int viewHeight = getViewHeight(); 7193 int y = (int) (top + data.mYPercentInDoc * height - 7194 data.mYPercentInView * viewHeight); 7195 if (DebugFlags.WEB_VIEW) { 7196 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7197 height + ",maxHeight=" + maxHeight + 7198 ",viewHeight=" + viewHeight + ",y=" 7199 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7200 ",yPercentInView=" + data.mYPercentInView+ ")"); 7201 } 7202 // use the passing content height to cap y as the current 7203 // mContentHeight may not be updated yet 7204 y = Math.max(0, 7205 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7206 // We need to take into account the visible title height 7207 // when scrolling since y is an absolute view position. 7208 y = Math.max(0, y - getVisibleTitleHeight()); 7209 scrollTo(x, y); 7210 } 7211 break; 7212 7213 case CENTER_FIT_RECT: 7214 Rect r = (Rect)msg.obj; 7215 centerFitRect(r.left, r.top, r.width(), r.height()); 7216 break; 7217 7218 case SET_SCROLLBAR_MODES: 7219 mHorizontalScrollBarMode = msg.arg1; 7220 mVerticalScrollBarMode = msg.arg2; 7221 break; 7222 7223 case SELECTION_STRING_CHANGED: 7224 if (mAccessibilityInjector != null) { 7225 String selectionString = (String) msg.obj; 7226 mAccessibilityInjector.onSelectionStringChange(selectionString); 7227 } 7228 break; 7229 7230 case SET_TOUCH_HIGHLIGHT_RECTS: 7231 invalidate(mTouchHighlightRegion.getBounds()); 7232 mTouchHighlightRegion.setEmpty(); 7233 if (msg.obj != null) { 7234 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 7235 for (Rect rect : rects) { 7236 Rect viewRect = contentToViewRect(rect); 7237 // some sites, like stories in nytimes.com, set 7238 // mouse event handler in the top div. It is not 7239 // user friendly to highlight the div if it covers 7240 // more than half of the screen. 7241 if (viewRect.width() < getWidth() >> 1 7242 || viewRect.height() < getHeight() >> 1) { 7243 mTouchHighlightRegion.union(viewRect); 7244 invalidate(viewRect); 7245 } else { 7246 Log.w(LOGTAG, "Skip the huge selection rect:" 7247 + viewRect); 7248 } 7249 } 7250 } 7251 break; 7252 7253 case SAVE_WEBARCHIVE_FINISHED: 7254 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7255 if (saveMessage.mCallback != null) { 7256 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7257 } 7258 break; 7259 7260 case SET_AUTOFILLABLE: 7261 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 7262 if (mWebTextView != null) { 7263 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 7264 rebuildWebTextView(); 7265 } 7266 break; 7267 7268 case AUTOFILL_COMPLETE: 7269 if (mWebTextView != null) { 7270 // Clear the WebTextView adapter when AutoFill finishes 7271 // so that the drop down gets cleared. 7272 mWebTextView.setAdapterCustom(null); 7273 } 7274 break; 7275 7276 default: 7277 super.handleMessage(msg); 7278 break; 7279 } 7280 } 7281 } 7282 7283 /** 7284 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7285 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7286 */ 7287 private void updateTextSelectionFromMessage(int nodePointer, 7288 int textGeneration, WebViewCore.TextSelectionData data) { 7289 if (inEditingMode() 7290 && mWebTextView.isSameTextField(nodePointer) 7291 && textGeneration == mTextGeneration) { 7292 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7293 } 7294 } 7295 7296 // Class used to use a dropdown for a <select> element 7297 private class InvokeListBox implements Runnable { 7298 // Whether the listbox allows multiple selection. 7299 private boolean mMultiple; 7300 // Passed in to a list with multiple selection to tell 7301 // which items are selected. 7302 private int[] mSelectedArray; 7303 // Passed in to a list with single selection to tell 7304 // where the initial selection is. 7305 private int mSelection; 7306 7307 private Container[] mContainers; 7308 7309 // Need these to provide stable ids to my ArrayAdapter, 7310 // which normally does not have stable ids. (Bug 1250098) 7311 private class Container extends Object { 7312 /** 7313 * Possible values for mEnabled. Keep in sync with OptionStatus in 7314 * WebViewCore.cpp 7315 */ 7316 final static int OPTGROUP = -1; 7317 final static int OPTION_DISABLED = 0; 7318 final static int OPTION_ENABLED = 1; 7319 7320 String mString; 7321 int mEnabled; 7322 int mId; 7323 7324 public String toString() { 7325 return mString; 7326 } 7327 } 7328 7329 /** 7330 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7331 * and allow filtering. 7332 */ 7333 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7334 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 7335 super(context, 7336 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 7337 com.android.internal.R.layout.select_dialog_singlechoice, 7338 objects); 7339 } 7340 7341 @Override 7342 public View getView(int position, View convertView, 7343 ViewGroup parent) { 7344 // Always pass in null so that we will get a new CheckedTextView 7345 // Otherwise, an item which was previously used as an <optgroup> 7346 // element (i.e. has no check), could get used as an <option> 7347 // element, which needs a checkbox/radio, but it would not have 7348 // one. 7349 convertView = super.getView(position, null, parent); 7350 Container c = item(position); 7351 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7352 // ListView does not draw dividers between disabled and 7353 // enabled elements. Use a LinearLayout to provide dividers 7354 LinearLayout layout = new LinearLayout(mContext); 7355 layout.setOrientation(LinearLayout.VERTICAL); 7356 if (position > 0) { 7357 View dividerTop = new View(mContext); 7358 dividerTop.setBackgroundResource( 7359 android.R.drawable.divider_horizontal_bright); 7360 layout.addView(dividerTop); 7361 } 7362 7363 if (Container.OPTGROUP == c.mEnabled) { 7364 // Currently select_dialog_multichoice and 7365 // select_dialog_singlechoice are CheckedTextViews. If 7366 // that changes, the class cast will no longer be valid. 7367 Assert.assertTrue( 7368 convertView instanceof CheckedTextView); 7369 ((CheckedTextView) convertView).setCheckMarkDrawable( 7370 null); 7371 } else { 7372 // c.mEnabled == Container.OPTION_DISABLED 7373 // Draw the disabled element in a disabled state. 7374 convertView.setEnabled(false); 7375 } 7376 7377 layout.addView(convertView); 7378 if (position < getCount() - 1) { 7379 View dividerBottom = new View(mContext); 7380 dividerBottom.setBackgroundResource( 7381 android.R.drawable.divider_horizontal_bright); 7382 layout.addView(dividerBottom); 7383 } 7384 return layout; 7385 } 7386 return convertView; 7387 } 7388 7389 @Override 7390 public boolean hasStableIds() { 7391 // AdapterView's onChanged method uses this to determine whether 7392 // to restore the old state. Return false so that the old (out 7393 // of date) state does not replace the new, valid state. 7394 return false; 7395 } 7396 7397 private Container item(int position) { 7398 if (position < 0 || position >= getCount()) { 7399 return null; 7400 } 7401 return (Container) getItem(position); 7402 } 7403 7404 @Override 7405 public long getItemId(int position) { 7406 Container item = item(position); 7407 if (item == null) { 7408 return -1; 7409 } 7410 return item.mId; 7411 } 7412 7413 @Override 7414 public boolean areAllItemsEnabled() { 7415 return false; 7416 } 7417 7418 @Override 7419 public boolean isEnabled(int position) { 7420 Container item = item(position); 7421 if (item == null) { 7422 return false; 7423 } 7424 return Container.OPTION_ENABLED == item.mEnabled; 7425 } 7426 } 7427 7428 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7429 mMultiple = true; 7430 mSelectedArray = selected; 7431 7432 int length = array.length; 7433 mContainers = new Container[length]; 7434 for (int i = 0; i < length; i++) { 7435 mContainers[i] = new Container(); 7436 mContainers[i].mString = array[i]; 7437 mContainers[i].mEnabled = enabled[i]; 7438 mContainers[i].mId = i; 7439 } 7440 } 7441 7442 private InvokeListBox(String[] array, int[] enabled, int selection) { 7443 mSelection = selection; 7444 mMultiple = false; 7445 7446 int length = array.length; 7447 mContainers = new Container[length]; 7448 for (int i = 0; i < length; i++) { 7449 mContainers[i] = new Container(); 7450 mContainers[i].mString = array[i]; 7451 mContainers[i].mEnabled = enabled[i]; 7452 mContainers[i].mId = i; 7453 } 7454 } 7455 7456 /* 7457 * Whenever the data set changes due to filtering, this class ensures 7458 * that the checked item remains checked. 7459 */ 7460 private class SingleDataSetObserver extends DataSetObserver { 7461 private long mCheckedId; 7462 private ListView mListView; 7463 private Adapter mAdapter; 7464 7465 /* 7466 * Create a new observer. 7467 * @param id The ID of the item to keep checked. 7468 * @param l ListView for getting and clearing the checked states 7469 * @param a Adapter for getting the IDs 7470 */ 7471 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7472 mCheckedId = id; 7473 mListView = l; 7474 mAdapter = a; 7475 } 7476 7477 public void onChanged() { 7478 // The filter may have changed which item is checked. Find the 7479 // item that the ListView thinks is checked. 7480 int position = mListView.getCheckedItemPosition(); 7481 long id = mAdapter.getItemId(position); 7482 if (mCheckedId != id) { 7483 // Clear the ListView's idea of the checked item, since 7484 // it is incorrect 7485 mListView.clearChoices(); 7486 // Search for mCheckedId. If it is in the filtered list, 7487 // mark it as checked 7488 int count = mAdapter.getCount(); 7489 for (int i = 0; i < count; i++) { 7490 if (mAdapter.getItemId(i) == mCheckedId) { 7491 mListView.setItemChecked(i, true); 7492 break; 7493 } 7494 } 7495 } 7496 } 7497 7498 public void onInvalidate() {} 7499 } 7500 7501 public void run() { 7502 final ListView listView = (ListView) LayoutInflater.from(mContext) 7503 .inflate(com.android.internal.R.layout.select_dialog, null); 7504 final MyArrayListAdapter adapter = new 7505 MyArrayListAdapter(mContext, mContainers, mMultiple); 7506 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7507 .setView(listView).setCancelable(true) 7508 .setInverseBackgroundForced(true); 7509 7510 if (mMultiple) { 7511 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7512 public void onClick(DialogInterface dialog, int which) { 7513 mWebViewCore.sendMessage( 7514 EventHub.LISTBOX_CHOICES, 7515 adapter.getCount(), 0, 7516 listView.getCheckedItemPositions()); 7517 }}); 7518 b.setNegativeButton(android.R.string.cancel, 7519 new DialogInterface.OnClickListener() { 7520 public void onClick(DialogInterface dialog, int which) { 7521 mWebViewCore.sendMessage( 7522 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7523 }}); 7524 } 7525 mListBoxDialog = b.create(); 7526 listView.setAdapter(adapter); 7527 listView.setFocusableInTouchMode(true); 7528 // There is a bug (1250103) where the checks in a ListView with 7529 // multiple items selected are associated with the positions, not 7530 // the ids, so the items do not properly retain their checks when 7531 // filtered. Do not allow filtering on multiple lists until 7532 // that bug is fixed. 7533 7534 listView.setTextFilterEnabled(!mMultiple); 7535 if (mMultiple) { 7536 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7537 int length = mSelectedArray.length; 7538 for (int i = 0; i < length; i++) { 7539 listView.setItemChecked(mSelectedArray[i], true); 7540 } 7541 } else { 7542 listView.setOnItemClickListener(new OnItemClickListener() { 7543 public void onItemClick(AdapterView parent, View v, 7544 int position, long id) { 7545 // Rather than sending the message right away, send it 7546 // after the page regains focus. 7547 mListBoxMessage = Message.obtain(null, 7548 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 7549 mListBoxDialog.dismiss(); 7550 mListBoxDialog = null; 7551 } 7552 }); 7553 if (mSelection != -1) { 7554 listView.setSelection(mSelection); 7555 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7556 listView.setItemChecked(mSelection, true); 7557 DataSetObserver observer = new SingleDataSetObserver( 7558 adapter.getItemId(mSelection), listView, adapter); 7559 adapter.registerDataSetObserver(observer); 7560 } 7561 } 7562 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7563 public void onCancel(DialogInterface dialog) { 7564 mWebViewCore.sendMessage( 7565 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7566 mListBoxDialog = null; 7567 } 7568 }); 7569 mListBoxDialog.show(); 7570 } 7571 } 7572 7573 private Message mListBoxMessage; 7574 7575 /* 7576 * Request a dropdown menu for a listbox with multiple selection. 7577 * 7578 * @param array Labels for the listbox. 7579 * @param enabledArray State for each element in the list. See static 7580 * integers in Container class. 7581 * @param selectedArray Which positions are initally selected. 7582 */ 7583 void requestListBox(String[] array, int[] enabledArray, int[] 7584 selectedArray) { 7585 mPrivateHandler.post( 7586 new InvokeListBox(array, enabledArray, selectedArray)); 7587 } 7588 7589 /* 7590 * Request a dropdown menu for a listbox with single selection or a single 7591 * <select> element. 7592 * 7593 * @param array Labels for the listbox. 7594 * @param enabledArray State for each element in the list. See static 7595 * integers in Container class. 7596 * @param selection Which position is initally selected. 7597 */ 7598 void requestListBox(String[] array, int[] enabledArray, int selection) { 7599 mPrivateHandler.post( 7600 new InvokeListBox(array, enabledArray, selection)); 7601 } 7602 7603 // called by JNI 7604 private void sendMoveFocus(int frame, int node) { 7605 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7606 new WebViewCore.CursorData(frame, node, 0, 0)); 7607 } 7608 7609 // called by JNI 7610 private void sendMoveMouse(int frame, int node, int x, int y) { 7611 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7612 new WebViewCore.CursorData(frame, node, x, y)); 7613 } 7614 7615 /* 7616 * Send a mouse move event to the webcore thread. 7617 * 7618 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7619 * which wants key events, but it is not the focus. This 7620 * will make the visual appear as though nothing is in 7621 * focus. Remove the WebTextView, if present, and stop 7622 * drawing the blinking caret. 7623 * called by JNI 7624 */ 7625 private void sendMoveMouseIfLatest(boolean removeFocus) { 7626 if (removeFocus) { 7627 clearTextEntry(); 7628 } 7629 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7630 cursorData()); 7631 } 7632 7633 // called by JNI 7634 private void sendMotionUp(int touchGeneration, 7635 int frame, int node, int x, int y) { 7636 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7637 touchUpData.mMoveGeneration = touchGeneration; 7638 touchUpData.mFrame = frame; 7639 touchUpData.mNode = node; 7640 touchUpData.mX = x; 7641 touchUpData.mY = y; 7642 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7643 } 7644 7645 7646 private int getScaledMaxXScroll() { 7647 int width; 7648 if (mHeightCanMeasure == false) { 7649 width = getViewWidth() / 4; 7650 } else { 7651 Rect visRect = new Rect(); 7652 calcOurVisibleRect(visRect); 7653 width = visRect.width() / 2; 7654 } 7655 // FIXME the divisor should be retrieved from somewhere 7656 return viewToContentX(width); 7657 } 7658 7659 private int getScaledMaxYScroll() { 7660 int height; 7661 if (mHeightCanMeasure == false) { 7662 height = getViewHeight() / 4; 7663 } else { 7664 Rect visRect = new Rect(); 7665 calcOurVisibleRect(visRect); 7666 height = visRect.height() / 2; 7667 } 7668 // FIXME the divisor should be retrieved from somewhere 7669 // the closest thing today is hard-coded into ScrollView.java 7670 // (from ScrollView.java, line 363) int maxJump = height/2; 7671 return Math.round(height * mZoomManager.getInvScale()); 7672 } 7673 7674 /** 7675 * Called by JNI to invalidate view 7676 */ 7677 private void viewInvalidate() { 7678 invalidate(); 7679 } 7680 7681 /** 7682 * Pass the key directly to the page. This assumes that 7683 * nativePageShouldHandleShiftAndArrows() returned true. 7684 */ 7685 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 7686 int keyEventAction; 7687 int eventHubAction; 7688 if (down) { 7689 keyEventAction = KeyEvent.ACTION_DOWN; 7690 eventHubAction = EventHub.KEY_DOWN; 7691 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7692 } else { 7693 keyEventAction = KeyEvent.ACTION_UP; 7694 eventHubAction = EventHub.KEY_UP; 7695 } 7696 7697 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7698 1, (metaState & KeyEvent.META_SHIFT_ON) 7699 | (metaState & KeyEvent.META_ALT_ON) 7700 | (metaState & KeyEvent.META_SYM_ON) 7701 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 7702 mWebViewCore.sendMessage(eventHubAction, event); 7703 } 7704 7705 // return true if the key was handled 7706 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7707 long time) { 7708 if (mNativeClass == 0) { 7709 return false; 7710 } 7711 mInitialHitTestResult = null; 7712 mLastCursorTime = time; 7713 mLastCursorBounds = nativeGetCursorRingBounds(); 7714 boolean keyHandled 7715 = nativeMoveCursor(keyCode, count, noScroll) == false; 7716 if (DebugFlags.WEB_VIEW) { 7717 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7718 + " mLastCursorTime=" + mLastCursorTime 7719 + " handled=" + keyHandled); 7720 } 7721 if (keyHandled == false || mHeightCanMeasure == false) { 7722 return keyHandled; 7723 } 7724 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7725 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7726 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7727 Rect visRect = new Rect(); 7728 calcOurVisibleRect(visRect); 7729 Rect outset = new Rect(visRect); 7730 int maxXScroll = visRect.width() / 2; 7731 int maxYScroll = visRect.height() / 2; 7732 outset.inset(-maxXScroll, -maxYScroll); 7733 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7734 return keyHandled; 7735 } 7736 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7737 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7738 maxXScroll); 7739 if (maxH > 0) { 7740 pinScrollBy(maxH, 0, true, 0); 7741 } else { 7742 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7743 -maxXScroll); 7744 if (maxH < 0) { 7745 pinScrollBy(maxH, 0, true, 0); 7746 } 7747 } 7748 if (mLastCursorBounds.isEmpty()) return keyHandled; 7749 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7750 return keyHandled; 7751 } 7752 if (DebugFlags.WEB_VIEW) { 7753 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7754 + contentCursorRingBounds); 7755 } 7756 requestRectangleOnScreen(viewCursorRingBounds); 7757 mUserScroll = true; 7758 return keyHandled; 7759 } 7760 7761 /** 7762 * @return If the page should receive Shift and arrows. 7763 */ 7764 private boolean pageShouldHandleShiftAndArrows() { 7765 // TODO: Maybe the injected script should announce its presence in 7766 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 7767 // will check that as one of the conditions it looks for 7768 return (nativePageShouldHandleShiftAndArrows() || mAccessibilityScriptInjected); 7769 } 7770 7771 /** 7772 * Set the background color. It's white by default. Pass 7773 * zero to make the view transparent. 7774 * @param color the ARGB color described by Color.java 7775 */ 7776 public void setBackgroundColor(int color) { 7777 mBackgroundColor = color; 7778 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7779 } 7780 7781 public void debugDump() { 7782 nativeDebugDump(); 7783 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7784 } 7785 7786 /** 7787 * Draw the HTML page into the specified canvas. This call ignores any 7788 * view-specific zoom, scroll offset, or other changes. It does not draw 7789 * any view-specific chrome, such as progress or URL bars. 7790 * 7791 * @hide only needs to be accessible to Browser and testing 7792 */ 7793 public void drawPage(Canvas canvas) { 7794 nativeDraw(canvas, 0, 0, false); 7795 } 7796 7797 /** 7798 * Set the time to wait between passing touches to WebCore. See also the 7799 * TOUCH_SENT_INTERVAL member for further discussion. 7800 * 7801 * @hide This is only used by the DRT test application. 7802 */ 7803 public void setTouchInterval(int interval) { 7804 mCurrentTouchInterval = interval; 7805 } 7806 7807 /** 7808 * Toggle whether multi touch events should be sent to webkit 7809 * no matter if UI wants to handle it first. 7810 * 7811 * @hide This is only used by the webkit layout test. 7812 */ 7813 public void setDeferMultiTouch(boolean value) { 7814 mDeferMultitouch = value; 7815 Log.v(LOGTAG, "set mDeferMultitouch to " + value); 7816 } 7817 7818 /** 7819 * Update our cache with updatedText. 7820 * @param updatedText The new text to put in our cache. 7821 */ 7822 /* package */ void updateCachedTextfield(String updatedText) { 7823 // Also place our generation number so that when we look at the cache 7824 // we recognize that it is up to date. 7825 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7826 } 7827 7828 /*package*/ void autoFillForm(int autoFillQueryId) { 7829 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 7830 } 7831 7832 /* package */ ViewManager getViewManager() { 7833 return mViewManager; 7834 } 7835 7836 private native int nativeCacheHitFramePointer(); 7837 private native Rect nativeCacheHitNodeBounds(); 7838 private native int nativeCacheHitNodePointer(); 7839 /* package */ native void nativeClearCursor(); 7840 private native void nativeCreate(int ptr); 7841 private native int nativeCursorFramePointer(); 7842 private native Rect nativeCursorNodeBounds(); 7843 private native int nativeCursorNodePointer(); 7844 /* package */ native boolean nativeCursorMatchesFocus(); 7845 private native boolean nativeCursorIntersects(Rect visibleRect); 7846 private native boolean nativeCursorIsAnchor(); 7847 private native boolean nativeCursorIsTextInput(); 7848 private native Point nativeCursorPosition(); 7849 private native String nativeCursorText(); 7850 /** 7851 * Returns true if the native cursor node says it wants to handle key events 7852 * (ala plugins). This can only be called if mNativeClass is non-zero! 7853 */ 7854 private native boolean nativeCursorWantsKeyEvents(); 7855 private native void nativeDebugDump(); 7856 private native void nativeDestroy(); 7857 7858 /** 7859 * Draw the picture set with a background color and extra. If 7860 * "splitIfNeeded" is true and the return value is not 0, the return value 7861 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 7862 * native allocation can be freed. 7863 */ 7864 private native int nativeDraw(Canvas canvas, int color, int extra, 7865 boolean splitIfNeeded); 7866 private native void nativeDumpDisplayTree(String urlOrNull); 7867 private native boolean nativeEvaluateLayersAnimations(); 7868 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 7869 private native void nativeExtendSelection(int x, int y); 7870 private native int nativeFindAll(String findLower, String findUpper, 7871 boolean sameAsLastSearch); 7872 private native void nativeFindNext(boolean forward); 7873 /* package */ native int nativeFocusCandidateFramePointer(); 7874 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7875 /* package */ native boolean nativeFocusCandidateIsPassword(); 7876 private native boolean nativeFocusCandidateIsRtlText(); 7877 private native boolean nativeFocusCandidateIsTextInput(); 7878 /* package */ native int nativeFocusCandidateMaxLength(); 7879 /* package */ native String nativeFocusCandidateName(); 7880 private native Rect nativeFocusCandidateNodeBounds(); 7881 /** 7882 * @return A Rect with left, top, right, bottom set to the corresponding 7883 * padding values in the focus candidate, if it is a textfield/textarea with 7884 * a style. Otherwise return null. This is not actually a rectangle; Rect 7885 * is being used to pass four integers. 7886 */ 7887 private native Rect nativeFocusCandidatePaddingRect(); 7888 /* package */ native int nativeFocusCandidatePointer(); 7889 private native String nativeFocusCandidateText(); 7890 /* package */ native float nativeFocusCandidateTextSize(); 7891 /* package */ native int nativeFocusCandidateLineHeight(); 7892 /** 7893 * Returns an integer corresponding to WebView.cpp::type. 7894 * See WebTextView.setType() 7895 */ 7896 private native int nativeFocusCandidateType(); 7897 private native boolean nativeFocusIsPlugin(); 7898 private native Rect nativeFocusNodeBounds(); 7899 /* package */ native int nativeFocusNodePointer(); 7900 private native Rect nativeGetCursorRingBounds(); 7901 private native String nativeGetSelection(); 7902 private native boolean nativeHasCursorNode(); 7903 private native boolean nativeHasFocusNode(); 7904 private native void nativeHideCursor(); 7905 private native boolean nativeHitSelection(int x, int y); 7906 private native String nativeImageURI(int x, int y); 7907 private native void nativeInstrumentReport(); 7908 private native Rect nativeLayerBounds(int layer); 7909 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7910 // return true if the page has been scrolled 7911 private native boolean nativeMotionUp(int x, int y, int slop); 7912 // returns false if it handled the key 7913 private native boolean nativeMoveCursor(int keyCode, int count, 7914 boolean noScroll); 7915 private native int nativeMoveGeneration(); 7916 private native void nativeMoveSelection(int x, int y); 7917 /** 7918 * @return true if the page should get the shift and arrow keys, rather 7919 * than select text/navigation. 7920 * 7921 * If the focus is a plugin, or if the focus and cursor match and are 7922 * a contentEditable element, then the page should handle these keys. 7923 */ 7924 private native boolean nativePageShouldHandleShiftAndArrows(); 7925 private native boolean nativePointInNavCache(int x, int y, int slop); 7926 // Like many other of our native methods, you must make sure that 7927 // mNativeClass is not null before calling this method. 7928 private native void nativeRecordButtons(boolean focused, 7929 boolean pressed, boolean invalidate); 7930 private native void nativeResetSelection(); 7931 private native void nativeSelectAll(); 7932 private native void nativeSelectBestAt(Rect rect); 7933 private native int nativeSelectionX(); 7934 private native int nativeSelectionY(); 7935 private native int nativeFindIndex(); 7936 private native void nativeSetExtendSelection(); 7937 private native void nativeSetFindIsEmpty(); 7938 private native void nativeSetFindIsUp(boolean isUp); 7939 private native void nativeSetHeightCanMeasure(boolean measure); 7940 private native void nativeSetBaseLayer(int layer, Rect invalRect); 7941 private native void nativeShowCursorTimed(); 7942 private native void nativeReplaceBaseContent(int content); 7943 private native void nativeCopyBaseContentToPicture(Picture pict); 7944 private native boolean nativeHasContent(); 7945 private native void nativeSetSelectionPointer(boolean set, 7946 float scale, int x, int y); 7947 private native boolean nativeStartSelection(int x, int y); 7948 private native Rect nativeSubtractLayers(Rect content); 7949 private native int nativeTextGeneration(); 7950 // Never call this version except by updateCachedTextfield(String) - 7951 // we always want to pass in our generation number. 7952 private native void nativeUpdateCachedTextfield(String updatedText, 7953 int generation); 7954 private native boolean nativeWordSelection(int x, int y); 7955 // return NO_LEFTEDGE means failure. 7956 static final int NO_LEFTEDGE = -1; 7957 native int nativeGetBlockLeftEdge(int x, int y, float scale); 7958 7959 // Returns a pointer to the scrollable LayerAndroid at the given point. 7960 private native int nativeScrollableLayer(int x, int y, Rect scrollRect); 7961 private native boolean nativeScrollLayer(int layer, int dx, int dy); 7962} 7963