WebView.java revision 73980a949d0d5fb9f1fb3979c73aef52ef8ddc2c
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.ClipboardManager; 22import android.content.Context; 23import android.content.DialogInterface; 24import android.content.DialogInterface.OnCancelListener; 25import android.content.Intent; 26import android.database.DataSetObserver; 27import android.graphics.Bitmap; 28import android.graphics.Canvas; 29import android.graphics.Color; 30import android.graphics.CornerPathEffect; 31import android.graphics.DrawFilter; 32import android.graphics.Interpolator; 33import android.graphics.Paint; 34import android.graphics.PaintFlagsDrawFilter; 35import android.graphics.Picture; 36import android.graphics.Point; 37import android.graphics.Rect; 38import android.graphics.RectF; 39import android.graphics.Region; 40import android.graphics.drawable.Drawable; 41import android.net.Uri; 42import android.net.http.SslCertificate; 43import android.os.Bundle; 44import android.os.Handler; 45import android.os.Message; 46import android.os.SystemClock; 47import android.speech.tts.TextToSpeech; 48import android.text.Selection; 49import android.text.Spannable; 50import android.util.AttributeSet; 51import android.util.EventLog; 52import android.util.Log; 53import android.util.TypedValue; 54import android.view.Gravity; 55import android.view.KeyEvent; 56import android.view.LayoutInflater; 57import android.view.MotionEvent; 58import android.view.ScaleGestureDetector; 59import android.view.SoundEffectConstants; 60import android.view.VelocityTracker; 61import android.view.View; 62import android.view.ViewConfiguration; 63import android.view.ViewGroup; 64import android.view.ViewTreeObserver; 65import android.view.accessibility.AccessibilityManager; 66import android.view.inputmethod.EditorInfo; 67import android.view.inputmethod.InputConnection; 68import android.view.inputmethod.InputMethodManager; 69import android.webkit.WebTextView.AutoCompleteAdapter; 70import android.webkit.WebViewCore.EventHub; 71import android.webkit.WebViewCore.TouchEventData; 72import android.webkit.WebViewCore.TouchHighlightData; 73import android.widget.AbsoluteLayout; 74import android.widget.Adapter; 75import android.widget.AdapterView; 76import android.widget.AdapterView.OnItemClickListener; 77import android.widget.ArrayAdapter; 78import android.widget.CheckedTextView; 79import android.widget.LinearLayout; 80import android.widget.ListView; 81import android.widget.Scroller; 82import android.widget.Toast; 83 84import junit.framework.Assert; 85 86import java.io.File; 87import java.io.FileInputStream; 88import java.io.FileNotFoundException; 89import java.io.FileOutputStream; 90import java.io.IOException; 91import java.io.InputStreamReader; 92import java.net.URLDecoder; 93import java.util.ArrayList; 94import java.util.HashMap; 95import java.util.List; 96import java.util.Map; 97import java.util.Set; 98 99/** 100 * <p>A View that displays web pages. This class is the basis upon which you 101 * can roll your own web browser or simply display some online content within your Activity. 102 * It uses the WebKit rendering engine to display 103 * web pages and includes methods to navigate forward and backward 104 * through a history, zoom in and out, perform text searches and more.</p> 105 * <p>To enable the built-in zoom, set 106 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 107 * (introduced in API version 3). 108 * <p>Note that, in order for your Activity to access the Internet and load web pages 109 * in a WebView, you must add the {@code INTERNET} permissions to your 110 * Android Manifest file:</p> 111 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 112 * 113 * <p>This must be a child of the <a 114 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 115 * element.</p> 116 * 117 * <h3>Basic usage</h3> 118 * 119 * <p>By default, a WebView provides no browser-like widgets, does not 120 * enable JavaScript and web page errors are ignored. If your goal is only 121 * to display some HTML as a part of your UI, this is probably fine; 122 * the user won't need to interact with the web page beyond reading 123 * it, and the web page won't need to interact with the user. If you 124 * actually want a full-blown web browser, then you probably want to 125 * invoke the Browser application with a URL Intent rather than show it 126 * with a WebView. For example: 127 * <pre> 128 * Uri uri = Uri.parse("http://www.example.com"); 129 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 130 * startActivity(intent); 131 * </pre> 132 * <p>See {@link android.content.Intent} for more information.</p> 133 * 134 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 135 * or set the entire Activity window as a WebView during {@link 136 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 137 * <pre class="prettyprint"> 138 * WebView webview = new WebView(this); 139 * setContentView(webview); 140 * </pre> 141 * 142 * <p>Then load the desired web page:</p> 143 * <pre> 144 * // Simplest usage: note that an exception will NOT be thrown 145 * // if there is an error loading this page (see below). 146 * webview.loadUrl("http://slashdot.org/"); 147 * 148 * // OR, you can also load from an HTML string: 149 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 150 * webview.loadData(summary, "text/html", "utf-8"); 151 * // ... although note that there are restrictions on what this HTML can do. 152 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 153 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 154 * </pre> 155 * 156 * <p>A WebView has several customization points where you can add your 157 * own behavior. These are:</p> 158 * 159 * <ul> 160 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 161 * This class is called when something that might impact a 162 * browser UI happens, for instance, progress updates and 163 * JavaScript alerts are sent here (see <a 164 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 165 * </li> 166 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 167 * It will be called when things happen that impact the 168 * rendering of the content, eg, errors or form submissions. You 169 * can also intercept URL loading here (via {@link 170 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 171 * shouldOverrideUrlLoading()}).</li> 172 * <li>Modifying the {@link android.webkit.WebSettings}, such as 173 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 174 * setJavaScriptEnabled()}. </li> 175 * <li>Adding JavaScript-to-Java interfaces with the {@link 176 * android.webkit.WebView#addJavascriptInterface} method. 177 * This lets you bind Java objects into the WebView so they can be 178 * controlled from the web pages JavaScript.</li> 179 * </ul> 180 * 181 * <p>Here's a more complicated example, showing error handling, 182 * settings, and progress notification:</p> 183 * 184 * <pre class="prettyprint"> 185 * // Let's display the progress in the activity title bar, like the 186 * // browser app does. 187 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 188 * 189 * webview.getSettings().setJavaScriptEnabled(true); 190 * 191 * final Activity activity = this; 192 * webview.setWebChromeClient(new WebChromeClient() { 193 * public void onProgressChanged(WebView view, int progress) { 194 * // Activities and WebViews measure progress with different scales. 195 * // The progress meter will automatically disappear when we reach 100% 196 * activity.setProgress(progress * 1000); 197 * } 198 * }); 199 * webview.setWebViewClient(new WebViewClient() { 200 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 201 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 202 * } 203 * }); 204 * 205 * webview.loadUrl("http://slashdot.org/"); 206 * </pre> 207 * 208 * <h3>Cookie and window management</h3> 209 * 210 * <p>For obvious security reasons, your application has its own 211 * cache, cookie store etc.—it does not share the Browser 212 * application's data. Cookies are managed on a separate thread, so 213 * operations like index building don't block the UI 214 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 215 * if you want to use cookies in your application. 216 * </p> 217 * 218 * <p>By default, requests by the HTML to open new windows are 219 * ignored. This is true whether they be opened by JavaScript or by 220 * the target attribute on a link. You can customize your 221 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 222 * and render them in whatever manner you want.</p> 223 * 224 * <p>The standard behavior for an Activity is to be destroyed and 225 * recreated when the device orientation or any other configuration changes. This will cause 226 * the WebView to reload the current page. If you don't want that, you 227 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 228 * changes, and then just leave the WebView alone. It'll automatically 229 * re-orient itself as appropriate. Read <a 230 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 231 * more information about how to handle configuration changes during runtime.</p> 232 * 233 * 234 * <h3>Building web pages to support different screen densities</h3> 235 * 236 * <p>The screen density of a device is based on the screen resolution. A screen with low density 237 * has fewer available pixels per inch, where a screen with high density 238 * has more — sometimes significantly more — pixels per inch. The density of a 239 * screen is important because, other things being equal, a UI element (such as a button) whose 240 * height and width are defined in terms of screen pixels will appear larger on the lower density 241 * screen and smaller on the higher density screen. 242 * For simplicity, Android collapses all actual screen densities into three generalized densities: 243 * high, medium, and low.</p> 244 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 245 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 246 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 247 * are bigger). 248 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 249 * you (as a web developer) target screens with different screen densities.</p> 250 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 251 * <ul> 252 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 253 * default scaling factor used for the current device. For example, if the value of {@code 254 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 255 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 256 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 257 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 258 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 259 * (discussed below), then you can stop this default scaling behavior.</li> 260 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 261 * densities for which this style sheet is to be used. The corresponding value should be either 262 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 263 * density, or high density screens, respectively. For example: 264 * <pre> 265 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 266 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 267 * which is the high density pixel ratio.</p> 268 * </li> 269 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 270 * this to specify the target density for which the web page is designed, using the following 271 * values: 272 * <ul> 273 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 274 * occurs.</li> 275 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 276 * as appropriate.</li> 277 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 278 * low density screens scale down. This is also the default behavior.</li> 279 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 280 * as appropriate.</li> 281 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 282 * values are 70-400).</li> 283 * </ul> 284 * <p>Here's an example meta tag to specify the target density:</p> 285 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 286 * </ul> 287 * <p>If you want to modify your web page for different densities, by using the {@code 288 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 289 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 290 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 291 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 292 * 293 * 294 */ 295@Widget 296public class WebView extends AbsoluteLayout 297 implements ViewTreeObserver.OnGlobalFocusChangeListener, 298 ViewGroup.OnHierarchyChangeListener { 299 300 // enable debug output for drag trackers 301 private static final boolean DEBUG_DRAG_TRACKER = false; 302 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 303 // the screen all-the-time. Good for profiling our drawing code 304 static private final boolean AUTO_REDRAW_HACK = false; 305 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 306 private boolean mAutoRedraw; 307 308 static final String LOGTAG = "webview"; 309 310 private ZoomManager mZoomManager; 311 312 /** 313 * Transportation object for returning WebView across thread boundaries. 314 */ 315 public class WebViewTransport { 316 private WebView mWebview; 317 318 /** 319 * Set the WebView to the transportation object. 320 * @param webview The WebView to transport. 321 */ 322 public synchronized void setWebView(WebView webview) { 323 mWebview = webview; 324 } 325 326 /** 327 * Return the WebView object. 328 * @return WebView The transported WebView object. 329 */ 330 public synchronized WebView getWebView() { 331 return mWebview; 332 } 333 } 334 335 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 336 private final CallbackProxy mCallbackProxy; 337 338 private final WebViewDatabase mDatabase; 339 340 // SSL certificate for the main top-level page (if secure) 341 private SslCertificate mCertificate; 342 343 // Native WebView pointer that is 0 until the native object has been 344 // created. 345 private int mNativeClass; 346 // This would be final but it needs to be set to null when the WebView is 347 // destroyed. 348 private WebViewCore mWebViewCore; 349 // Handler for dispatching UI messages. 350 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 351 private WebTextView mWebTextView; 352 // Used to ignore changes to webkit text that arrives to the UI side after 353 // more key events. 354 private int mTextGeneration; 355 356 /* package */ void incrementTextGeneration() { mTextGeneration++; } 357 358 // Used by WebViewCore to create child views. 359 /* package */ final ViewManager mViewManager; 360 361 // Used to display in full screen mode 362 PluginFullScreenHolder mFullScreenHolder; 363 364 /** 365 * Position of the last touch event. 366 */ 367 private float mLastTouchX; 368 private float mLastTouchY; 369 370 /** 371 * Time of the last touch event. 372 */ 373 private long mLastTouchTime; 374 375 /** 376 * Time of the last time sending touch event to WebViewCore 377 */ 378 private long mLastSentTouchTime; 379 380 /** 381 * The minimum elapsed time before sending another ACTION_MOVE event to 382 * WebViewCore. This really should be tuned for each type of the devices. 383 * For example in Google Map api test case, it takes Dream device at least 384 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 385 * triggering the layout and drawing the picture. While the same process 386 * takes 60+ms on the current high speed device. If we make 387 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 388 * to WebViewCore queue and the real layout and draw events will be pushed 389 * to further, which slows down the refresh rate. Choose 50 to favor the 390 * current high speed devices. For Dream like devices, 100 is a better 391 * choice. Maybe make this in the buildspec later. 392 */ 393 private static final int TOUCH_SENT_INTERVAL = 50; 394 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 395 396 /** 397 * Helper class to get velocity for fling 398 */ 399 VelocityTracker mVelocityTracker; 400 private int mMaximumFling; 401 private float mLastVelocity; 402 private float mLastVelX; 403 private float mLastVelY; 404 405 // A pointer to the native scrollable layer when dragging layers. Only 406 // valid when mTouchMode is TOUCH_DRAG_LAYER_MODE. 407 private int mScrollingLayer; 408 409 // only trigger accelerated fling if the new velocity is at least 410 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 411 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 412 413 /** 414 * Touch mode 415 */ 416 private int mTouchMode = TOUCH_DONE_MODE; 417 private static final int TOUCH_INIT_MODE = 1; 418 private static final int TOUCH_DRAG_START_MODE = 2; 419 private static final int TOUCH_DRAG_MODE = 3; 420 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 421 private static final int TOUCH_SHORTPRESS_MODE = 5; 422 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 423 private static final int TOUCH_DONE_MODE = 7; 424 private static final int TOUCH_PINCH_DRAG = 8; 425 private static final int TOUCH_DRAG_LAYER_MODE = 9; 426 427 // Whether to forward the touch events to WebCore 428 private boolean mForwardTouchEvents = false; 429 430 // Whether to prevent default during touch. The initial value depends on 431 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 432 // for touch down. Otherwise UI will wait for the answer of the first 433 // confirmed move before taking over the control. 434 private static final int PREVENT_DEFAULT_NO = 0; 435 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 436 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 437 private static final int PREVENT_DEFAULT_YES = 3; 438 private static final int PREVENT_DEFAULT_IGNORE = 4; 439 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 440 441 // true when the touch movement exceeds the slop 442 private boolean mConfirmMove; 443 444 // if true, touch events will be first processed by WebCore, if prevent 445 // default is not set, the UI will continue handle them. 446 private boolean mDeferTouchProcess; 447 448 // to avoid interfering with the current touch events, track them 449 // separately. Currently no snapping or fling in the deferred process mode 450 private int mDeferTouchMode = TOUCH_DONE_MODE; 451 private float mLastDeferTouchX; 452 private float mLastDeferTouchY; 453 454 // To keep track of whether the current drag was initiated by a WebTextView, 455 // so that we know not to hide the cursor 456 boolean mDragFromTextInput; 457 458 // Whether or not to draw the cursor ring. 459 private boolean mDrawCursorRing = true; 460 461 // true if onPause has been called (and not onResume) 462 private boolean mIsPaused; 463 464 /** 465 * Customizable constant 466 */ 467 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 468 private int mTouchSlopSquare; 469 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 470 private int mDoubleTapSlopSquare; 471 // pre-computed density adjusted navigation slop 472 private int mNavSlop; 473 // This should be ViewConfiguration.getTapTimeout() 474 // But system time out is 100ms, which is too short for the browser. 475 // In the browser, if it switches out of tap too soon, jump tap won't work. 476 private static final int TAP_TIMEOUT = 200; 477 // This should be ViewConfiguration.getLongPressTimeout() 478 // But system time out is 500ms, which is too short for the browser. 479 // With a short timeout, it's difficult to treat trigger a short press. 480 private static final int LONG_PRESS_TIMEOUT = 1000; 481 // needed to avoid flinging after a pause of no movement 482 private static final int MIN_FLING_TIME = 250; 483 // draw unfiltered after drag is held without movement 484 private static final int MOTIONLESS_TIME = 100; 485 // The amount of content to overlap between two screens when going through 486 // pages with the space bar, in pixels. 487 private static final int PAGE_SCROLL_OVERLAP = 24; 488 489 /** 490 * These prevent calling requestLayout if either dimension is fixed. This 491 * depends on the layout parameters and the measure specs. 492 */ 493 boolean mWidthCanMeasure; 494 boolean mHeightCanMeasure; 495 496 // Remember the last dimensions we sent to the native side so we can avoid 497 // sending the same dimensions more than once. 498 int mLastWidthSent; 499 int mLastHeightSent; 500 501 private int mContentWidth; // cache of value from WebViewCore 502 private int mContentHeight; // cache of value from WebViewCore 503 504 // Need to have the separate control for horizontal and vertical scrollbar 505 // style than the View's single scrollbar style 506 private boolean mOverlayHorizontalScrollbar = true; 507 private boolean mOverlayVerticalScrollbar = false; 508 509 // our standard speed. this way small distances will be traversed in less 510 // time than large distances, but we cap the duration, so that very large 511 // distances won't take too long to get there. 512 private static final int STD_SPEED = 480; // pixels per second 513 // time for the longest scroll animation 514 private static final int MAX_DURATION = 750; // milliseconds 515 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 516 private Scroller mScroller; 517 518 private boolean mWrapContent; 519 private static final int MOTIONLESS_FALSE = 0; 520 private static final int MOTIONLESS_PENDING = 1; 521 private static final int MOTIONLESS_TRUE = 2; 522 private static final int MOTIONLESS_IGNORE = 3; 523 private int mHeldMotionless; 524 525 // An instance for injecting accessibility in WebViews with disabled 526 // JavaScript or ones for which no accessibility script exists 527 private AccessibilityInjector mAccessibilityInjector; 528 529 // the color used to highlight the touch rectangles 530 private static final int mHightlightColor = 0x33000000; 531 // the round corner for the highlight path 532 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 533 // the region indicating where the user touched on the screen 534 private Region mTouchHighlightRegion = new Region(); 535 // the paint for the touch highlight 536 private Paint mTouchHightlightPaint; 537 // debug only 538 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 539 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 540 private Paint mTouchCrossHairColor; 541 private int mTouchHighlightX; 542 private int mTouchHighlightY; 543 544 /* 545 * Private message ids 546 */ 547 private static final int REMEMBER_PASSWORD = 1; 548 private static final int NEVER_REMEMBER_PASSWORD = 2; 549 private static final int SWITCH_TO_SHORTPRESS = 3; 550 private static final int SWITCH_TO_LONGPRESS = 4; 551 private static final int RELEASE_SINGLE_TAP = 5; 552 private static final int REQUEST_FORM_DATA = 6; 553 private static final int RESUME_WEBCORE_PRIORITY = 7; 554 private static final int DRAG_HELD_MOTIONLESS = 8; 555 private static final int AWAKEN_SCROLL_BARS = 9; 556 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 557 558 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 559 private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT; 560 561 /* 562 * Package message ids 563 */ 564 //! arg1=x, arg2=y 565 static final int SCROLL_TO_MSG_ID = 101; 566 static final int SCROLL_BY_MSG_ID = 102; 567 //! arg1=x, arg2=y 568 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 569 //! arg1=x, arg2=y 570 static final int SYNC_SCROLL_TO_MSG_ID = 104; 571 static final int NEW_PICTURE_MSG_ID = 105; 572 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 573 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 574 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 575 static final int UPDATE_ZOOM_RANGE = 109; 576 static final int UNHANDLED_NAV_KEY = 110; 577 static final int CLEAR_TEXT_ENTRY = 111; 578 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 579 static final int SHOW_RECT_MSG_ID = 113; 580 static final int LONG_PRESS_CENTER = 114; 581 static final int PREVENT_TOUCH_ID = 115; 582 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 583 // obj=Rect in doc coordinates 584 static final int INVAL_RECT_MSG_ID = 117; 585 static final int REQUEST_KEYBOARD = 118; 586 static final int DO_MOTION_UP = 119; 587 static final int SHOW_FULLSCREEN = 120; 588 static final int HIDE_FULLSCREEN = 121; 589 static final int DOM_FOCUS_CHANGED = 122; 590 static final int REPLACE_BASE_CONTENT = 123; 591 // 124; 592 static final int RETURN_LABEL = 125; 593 static final int FIND_AGAIN = 126; 594 static final int CENTER_FIT_RECT = 127; 595 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 596 static final int SET_SCROLLBAR_MODES = 129; 597 static final int SELECTION_STRING_CHANGED = 130; 598 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 599 static final int SAVE_WEBARCHIVE_FINISHED = 132; 600 601 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 602 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 603 604 static final String[] HandlerPrivateDebugString = { 605 "REMEMBER_PASSWORD", // = 1; 606 "NEVER_REMEMBER_PASSWORD", // = 2; 607 "SWITCH_TO_SHORTPRESS", // = 3; 608 "SWITCH_TO_LONGPRESS", // = 4; 609 "RELEASE_SINGLE_TAP", // = 5; 610 "REQUEST_FORM_DATA", // = 6; 611 "RESUME_WEBCORE_PRIORITY", // = 7; 612 "DRAG_HELD_MOTIONLESS", // = 8; 613 "AWAKEN_SCROLL_BARS", // = 9; 614 "PREVENT_DEFAULT_TIMEOUT" // = 10; 615 }; 616 617 static final String[] HandlerPackageDebugString = { 618 "SCROLL_TO_MSG_ID", // = 101; 619 "SCROLL_BY_MSG_ID", // = 102; 620 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 621 "SYNC_SCROLL_TO_MSG_ID", // = 104; 622 "NEW_PICTURE_MSG_ID", // = 105; 623 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 624 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 625 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 626 "UPDATE_ZOOM_RANGE", // = 109; 627 "UNHANDLED_NAV_KEY", // = 110; 628 "CLEAR_TEXT_ENTRY", // = 111; 629 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 630 "SHOW_RECT_MSG_ID", // = 113; 631 "LONG_PRESS_CENTER", // = 114; 632 "PREVENT_TOUCH_ID", // = 115; 633 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 634 "INVAL_RECT_MSG_ID", // = 117; 635 "REQUEST_KEYBOARD", // = 118; 636 "DO_MOTION_UP", // = 119; 637 "SHOW_FULLSCREEN", // = 120; 638 "HIDE_FULLSCREEN", // = 121; 639 "DOM_FOCUS_CHANGED", // = 122; 640 "REPLACE_BASE_CONTENT", // = 123; 641 "124", // = 124; 642 "RETURN_LABEL", // = 125; 643 "FIND_AGAIN", // = 126; 644 "CENTER_FIT_RECT", // = 127; 645 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 646 "SET_SCROLLBAR_MODES", // = 129; 647 "SELECTION_STRING_CHANGED", // = 130; 648 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 649 "SAVE_WEBARCHIVE_FINISHED" // = 132; 650 }; 651 652 // If the site doesn't use the viewport meta tag to specify the viewport, 653 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 654 static final int DEFAULT_VIEWPORT_WIDTH = 800; 655 656 // normally we try to fit the content to the minimum preferred width 657 // calculated by the Webkit. To avoid the bad behavior when some site's 658 // minimum preferred width keeps growing when changing the viewport width or 659 // the minimum preferred width is huge, an upper limit is needed. 660 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 661 662 // initial scale in percent. 0 means using default. 663 private int mInitialScaleInPercent = 0; 664 665 private boolean mUserScroll = false; 666 667 private int mSnapScrollMode = SNAP_NONE; 668 private static final int SNAP_NONE = 0; 669 private static final int SNAP_LOCK = 1; // not a separate state 670 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 671 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 672 private boolean mSnapPositive; 673 674 // keep these in sync with their counterparts in WebView.cpp 675 private static final int DRAW_EXTRAS_NONE = 0; 676 private static final int DRAW_EXTRAS_FIND = 1; 677 private static final int DRAW_EXTRAS_SELECTION = 2; 678 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 679 680 // keep this in sync with WebCore:ScrollbarMode in WebKit 681 private static final int SCROLLBAR_AUTO = 0; 682 private static final int SCROLLBAR_ALWAYSOFF = 1; 683 // as we auto fade scrollbar, this is ignored. 684 private static final int SCROLLBAR_ALWAYSON = 2; 685 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 686 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 687 688 // the alias via which accessibility JavaScript interface is exposed 689 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 690 691 // JavaScript to inject the script chooser which will 692 // pick the right script for the current URL 693 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 694 "javascript:(function() {" + 695 " var chooser = document.createElement('script');" + 696 " chooser.type = 'text/javascript';" + 697 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 698 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 699 " })();"; 700 701 // Used to match key downs and key ups 702 private boolean mGotKeyDown; 703 704 /* package */ static boolean mLogEvent = true; 705 706 // for event log 707 private long mLastTouchUpTime = 0; 708 709 /** 710 * URI scheme for telephone number 711 */ 712 public static final String SCHEME_TEL = "tel:"; 713 /** 714 * URI scheme for email address 715 */ 716 public static final String SCHEME_MAILTO = "mailto:"; 717 /** 718 * URI scheme for map address 719 */ 720 public static final String SCHEME_GEO = "geo:0,0?q="; 721 722 private int mBackgroundColor = Color.WHITE; 723 724 // Used to notify listeners of a new picture. 725 private PictureListener mPictureListener; 726 /** 727 * Interface to listen for new pictures as they change. 728 */ 729 public interface PictureListener { 730 /** 731 * Notify the listener that the picture has changed. 732 * @param view The WebView that owns the picture. 733 * @param picture The new picture. 734 */ 735 public void onNewPicture(WebView view, Picture picture); 736 } 737 738 // FIXME: Want to make this public, but need to change the API file. 739 public /*static*/ class HitTestResult { 740 /** 741 * Default HitTestResult, where the target is unknown 742 */ 743 public static final int UNKNOWN_TYPE = 0; 744 /** 745 * HitTestResult for hitting a HTML::a tag 746 */ 747 public static final int ANCHOR_TYPE = 1; 748 /** 749 * HitTestResult for hitting a phone number 750 */ 751 public static final int PHONE_TYPE = 2; 752 /** 753 * HitTestResult for hitting a map address 754 */ 755 public static final int GEO_TYPE = 3; 756 /** 757 * HitTestResult for hitting an email address 758 */ 759 public static final int EMAIL_TYPE = 4; 760 /** 761 * HitTestResult for hitting an HTML::img tag 762 */ 763 public static final int IMAGE_TYPE = 5; 764 /** 765 * HitTestResult for hitting a HTML::a tag which contains HTML::img 766 */ 767 public static final int IMAGE_ANCHOR_TYPE = 6; 768 /** 769 * HitTestResult for hitting a HTML::a tag with src=http 770 */ 771 public static final int SRC_ANCHOR_TYPE = 7; 772 /** 773 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 774 */ 775 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 776 /** 777 * HitTestResult for hitting an edit text area 778 */ 779 public static final int EDIT_TEXT_TYPE = 9; 780 781 private int mType; 782 private String mExtra; 783 784 HitTestResult() { 785 mType = UNKNOWN_TYPE; 786 } 787 788 private void setType(int type) { 789 mType = type; 790 } 791 792 private void setExtra(String extra) { 793 mExtra = extra; 794 } 795 796 public int getType() { 797 return mType; 798 } 799 800 public String getExtra() { 801 return mExtra; 802 } 803 } 804 805 /** 806 * Construct a new WebView with a Context object. 807 * @param context A Context object used to access application assets. 808 */ 809 public WebView(Context context) { 810 this(context, null); 811 } 812 813 /** 814 * Construct a new WebView with layout parameters. 815 * @param context A Context object used to access application assets. 816 * @param attrs An AttributeSet passed to our parent. 817 */ 818 public WebView(Context context, AttributeSet attrs) { 819 this(context, attrs, com.android.internal.R.attr.webViewStyle); 820 } 821 822 /** 823 * Construct a new WebView with layout parameters and a default style. 824 * @param context A Context object used to access application assets. 825 * @param attrs An AttributeSet passed to our parent. 826 * @param defStyle The default style resource ID. 827 */ 828 public WebView(Context context, AttributeSet attrs, int defStyle) { 829 this(context, attrs, defStyle, false); 830 } 831 832 /** 833 * Construct a new WebView with layout parameters and a default style. 834 * @param context A Context object used to access application assets. 835 * @param attrs An AttributeSet passed to our parent. 836 * @param defStyle The default style resource ID. 837 */ 838 public WebView(Context context, AttributeSet attrs, int defStyle, 839 boolean privateBrowsing) { 840 this(context, attrs, defStyle, null, privateBrowsing); 841 } 842 843 /** 844 * Construct a new WebView with layout parameters, a default style and a set 845 * of custom Javscript interfaces to be added to the WebView at initialization 846 * time. This guarantees that these interfaces will be available when the JS 847 * context is initialized. 848 * @param context A Context object used to access application assets. 849 * @param attrs An AttributeSet passed to our parent. 850 * @param defStyle The default style resource ID. 851 * @param javascriptInterfaces is a Map of interface names, as keys, and 852 * object implementing those interfaces, as values. 853 * @hide pending API council approval. 854 */ 855 protected WebView(Context context, AttributeSet attrs, int defStyle, 856 Map<String, Object> javascriptInterfaces, boolean privateBrowsing) { 857 super(context, attrs, defStyle); 858 859 if (AccessibilityManager.getInstance(context).isEnabled()) { 860 if (javascriptInterfaces == null) { 861 javascriptInterfaces = new HashMap<String, Object>(); 862 } 863 exposeAccessibilityJavaScriptApi(javascriptInterfaces); 864 } 865 866 mCallbackProxy = new CallbackProxy(context, this); 867 mViewManager = new ViewManager(this); 868 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 869 mDatabase = WebViewDatabase.getInstance(context); 870 mScroller = new Scroller(context); 871 mZoomManager = new ZoomManager(this, mCallbackProxy); 872 873 /* The init method must follow the creation of certain member variables, 874 * such as the mZoomManager. 875 */ 876 init(); 877 updateMultiTouchSupport(context); 878 879 if (privateBrowsing) { 880 startPrivateBrowsing(); 881 } 882 } 883 884 void updateMultiTouchSupport(Context context) { 885 mZoomManager.updateMultiTouchSupport(context); 886 } 887 888 private void init() { 889 setWillNotDraw(false); 890 setFocusable(true); 891 setFocusableInTouchMode(true); 892 setClickable(true); 893 setLongClickable(true); 894 895 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 896 int slop = configuration.getScaledTouchSlop(); 897 mTouchSlopSquare = slop * slop; 898 mMinLockSnapReverseDistance = slop; 899 slop = configuration.getScaledDoubleTapSlop(); 900 mDoubleTapSlopSquare = slop * slop; 901 final float density = getContext().getResources().getDisplayMetrics().density; 902 // use one line height, 16 based on our current default font, for how 903 // far we allow a touch be away from the edge of a link 904 mNavSlop = (int) (16 * density); 905 mZoomManager.init(density); 906 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 907 908 // Compute the inverse of the density squared. 909 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 910 } 911 912 /** 913 * Exposes accessibility APIs to JavaScript by appending them to the JavaScript 914 * interfaces map provided by the WebView client. In case of conflicting 915 * alias with the one of the accessibility API the user specified one wins. 916 * 917 * @param javascriptInterfaces A map with interfaces to be exposed to JavaScript. 918 */ 919 private void exposeAccessibilityJavaScriptApi(Map<String, Object> javascriptInterfaces) { 920 if (javascriptInterfaces.containsKey(ALIAS_ACCESSIBILITY_JS_INTERFACE)) { 921 Log.w(LOGTAG, "JavaScript interface mapped to \"" + ALIAS_ACCESSIBILITY_JS_INTERFACE 922 + "\" overrides the accessibility API JavaScript interface. No accessibility" 923 + "API will be exposed to JavaScript!"); 924 return; 925 } 926 927 // expose the TTS for now ... 928 javascriptInterfaces.put(ALIAS_ACCESSIBILITY_JS_INTERFACE, 929 new TextToSpeech(getContext(), null)); 930 } 931 932 /* package */void updateDefaultZoomDensity(int zoomDensity) { 933 final float density = mContext.getResources().getDisplayMetrics().density 934 * 100 / zoomDensity; 935 mNavSlop = (int) (16 * density); 936 mZoomManager.updateDefaultZoomDensity(density); 937 } 938 939 /* package */ boolean onSavePassword(String schemePlusHost, String username, 940 String password, final Message resumeMsg) { 941 boolean rVal = false; 942 if (resumeMsg == null) { 943 // null resumeMsg implies saving password silently 944 mDatabase.setUsernamePassword(schemePlusHost, username, password); 945 } else { 946 final Message remember = mPrivateHandler.obtainMessage( 947 REMEMBER_PASSWORD); 948 remember.getData().putString("host", schemePlusHost); 949 remember.getData().putString("username", username); 950 remember.getData().putString("password", password); 951 remember.obj = resumeMsg; 952 953 final Message neverRemember = mPrivateHandler.obtainMessage( 954 NEVER_REMEMBER_PASSWORD); 955 neverRemember.getData().putString("host", schemePlusHost); 956 neverRemember.getData().putString("username", username); 957 neverRemember.getData().putString("password", password); 958 neverRemember.obj = resumeMsg; 959 960 new AlertDialog.Builder(getContext()) 961 .setTitle(com.android.internal.R.string.save_password_label) 962 .setMessage(com.android.internal.R.string.save_password_message) 963 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 964 new DialogInterface.OnClickListener() { 965 public void onClick(DialogInterface dialog, int which) { 966 resumeMsg.sendToTarget(); 967 } 968 }) 969 .setNeutralButton(com.android.internal.R.string.save_password_remember, 970 new DialogInterface.OnClickListener() { 971 public void onClick(DialogInterface dialog, int which) { 972 remember.sendToTarget(); 973 } 974 }) 975 .setNegativeButton(com.android.internal.R.string.save_password_never, 976 new DialogInterface.OnClickListener() { 977 public void onClick(DialogInterface dialog, int which) { 978 neverRemember.sendToTarget(); 979 } 980 }) 981 .setOnCancelListener(new OnCancelListener() { 982 public void onCancel(DialogInterface dialog) { 983 resumeMsg.sendToTarget(); 984 } 985 }).show(); 986 // Return true so that WebViewCore will pause while the dialog is 987 // up. 988 rVal = true; 989 } 990 return rVal; 991 } 992 993 @Override 994 public void setScrollBarStyle(int style) { 995 if (style == View.SCROLLBARS_INSIDE_INSET 996 || style == View.SCROLLBARS_OUTSIDE_INSET) { 997 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 998 } else { 999 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1000 } 1001 super.setScrollBarStyle(style); 1002 } 1003 1004 /** 1005 * Specify whether the horizontal scrollbar has overlay style. 1006 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1007 */ 1008 public void setHorizontalScrollbarOverlay(boolean overlay) { 1009 mOverlayHorizontalScrollbar = overlay; 1010 } 1011 1012 /** 1013 * Specify whether the vertical scrollbar has overlay style. 1014 * @param overlay TRUE if vertical scrollbar should have overlay style. 1015 */ 1016 public void setVerticalScrollbarOverlay(boolean overlay) { 1017 mOverlayVerticalScrollbar = overlay; 1018 } 1019 1020 /** 1021 * Return whether horizontal scrollbar has overlay style 1022 * @return TRUE if horizontal scrollbar has overlay style. 1023 */ 1024 public boolean overlayHorizontalScrollbar() { 1025 return mOverlayHorizontalScrollbar; 1026 } 1027 1028 /** 1029 * Return whether vertical scrollbar has overlay style 1030 * @return TRUE if vertical scrollbar has overlay style. 1031 */ 1032 public boolean overlayVerticalScrollbar() { 1033 return mOverlayVerticalScrollbar; 1034 } 1035 1036 /* 1037 * Return the width of the view where the content of WebView should render 1038 * to. 1039 * Note: this can be called from WebCoreThread. 1040 */ 1041 /* package */ int getViewWidth() { 1042 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1043 return getWidth(); 1044 } else { 1045 return getWidth() - getVerticalScrollbarWidth(); 1046 } 1047 } 1048 1049 /* 1050 * returns the height of the titlebarview (if any). Does not care about 1051 * scrolling 1052 */ 1053 int getTitleHeight() { 1054 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1055 } 1056 1057 /* 1058 * Return the amount of the titlebarview (if any) that is visible 1059 * 1060 * @hide 1061 */ 1062 public int getVisibleTitleHeight() { 1063 return Math.max(getTitleHeight() - mScrollY, 0); 1064 } 1065 1066 /* 1067 * Return the height of the view where the content of WebView should render 1068 * to. Note that this excludes mTitleBar, if there is one. 1069 * Note: this can be called from WebCoreThread. 1070 */ 1071 /* package */ int getViewHeight() { 1072 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1073 } 1074 1075 private int getViewHeightWithTitle() { 1076 int height = getHeight(); 1077 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1078 height -= getHorizontalScrollbarHeight(); 1079 } 1080 return height; 1081 } 1082 1083 /** 1084 * @return The SSL certificate for the main top-level page or null if 1085 * there is no certificate (the site is not secure). 1086 */ 1087 public SslCertificate getCertificate() { 1088 return mCertificate; 1089 } 1090 1091 /** 1092 * Sets the SSL certificate for the main top-level page. 1093 */ 1094 public void setCertificate(SslCertificate certificate) { 1095 if (DebugFlags.WEB_VIEW) { 1096 Log.v(LOGTAG, "setCertificate=" + certificate); 1097 } 1098 // here, the certificate can be null (if the site is not secure) 1099 mCertificate = certificate; 1100 } 1101 1102 //------------------------------------------------------------------------- 1103 // Methods called by activity 1104 //------------------------------------------------------------------------- 1105 1106 /** 1107 * Save the username and password for a particular host in the WebView's 1108 * internal database. 1109 * @param host The host that required the credentials. 1110 * @param username The username for the given host. 1111 * @param password The password for the given host. 1112 */ 1113 public void savePassword(String host, String username, String password) { 1114 mDatabase.setUsernamePassword(host, username, password); 1115 } 1116 1117 /** 1118 * Set the HTTP authentication credentials for a given host and realm. 1119 * 1120 * @param host The host for the credentials. 1121 * @param realm The realm for the credentials. 1122 * @param username The username for the password. If it is null, it means 1123 * password can't be saved. 1124 * @param password The password 1125 */ 1126 public void setHttpAuthUsernamePassword(String host, String realm, 1127 String username, String password) { 1128 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1129 } 1130 1131 /** 1132 * Retrieve the HTTP authentication username and password for a given 1133 * host & realm pair 1134 * 1135 * @param host The host for which the credentials apply. 1136 * @param realm The realm for which the credentials apply. 1137 * @return String[] if found, String[0] is username, which can be null and 1138 * String[1] is password. Return null if it can't find anything. 1139 */ 1140 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1141 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1142 } 1143 1144 /** 1145 * Destroy the internal state of the WebView. This method should be called 1146 * after the WebView has been removed from the view system. No other 1147 * methods may be called on a WebView after destroy. 1148 */ 1149 public void destroy() { 1150 clearTextEntry(false); 1151 if (mWebViewCore != null) { 1152 // Set the handlers to null before destroying WebViewCore so no 1153 // more messages will be posted. 1154 mCallbackProxy.setWebViewClient(null); 1155 mCallbackProxy.setWebChromeClient(null); 1156 // Tell WebViewCore to destroy itself 1157 synchronized (this) { 1158 WebViewCore webViewCore = mWebViewCore; 1159 mWebViewCore = null; // prevent using partial webViewCore 1160 webViewCore.destroy(); 1161 } 1162 // Remove any pending messages that might not be serviced yet. 1163 mPrivateHandler.removeCallbacksAndMessages(null); 1164 mCallbackProxy.removeCallbacksAndMessages(null); 1165 // Wake up the WebCore thread just in case it is waiting for a 1166 // javascript dialog. 1167 synchronized (mCallbackProxy) { 1168 mCallbackProxy.notify(); 1169 } 1170 } 1171 if (mNativeClass != 0) { 1172 nativeDestroy(); 1173 mNativeClass = 0; 1174 } 1175 } 1176 1177 /** 1178 * Enables platform notifications of data state and proxy changes. 1179 */ 1180 public static void enablePlatformNotifications() { 1181 Network.enablePlatformNotifications(); 1182 } 1183 1184 /** 1185 * If platform notifications are enabled, this should be called 1186 * from the Activity's onPause() or onStop(). 1187 */ 1188 public static void disablePlatformNotifications() { 1189 Network.disablePlatformNotifications(); 1190 } 1191 1192 /** 1193 * Sets JavaScript engine flags. 1194 * 1195 * @param flags JS engine flags in a String 1196 * 1197 * @hide pending API solidification 1198 */ 1199 public void setJsFlags(String flags) { 1200 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1201 } 1202 1203 /** 1204 * Inform WebView of the network state. This is used to set 1205 * the javascript property window.navigator.isOnline and 1206 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1207 * @param networkUp boolean indicating if network is available 1208 */ 1209 public void setNetworkAvailable(boolean networkUp) { 1210 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1211 networkUp ? 1 : 0, 0); 1212 } 1213 1214 /** 1215 * Inform WebView about the current network type. 1216 * {@hide} 1217 */ 1218 public void setNetworkType(String type, String subtype) { 1219 Map<String, String> map = new HashMap<String, String>(); 1220 map.put("type", type); 1221 map.put("subtype", subtype); 1222 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1223 } 1224 /** 1225 * Save the state of this WebView used in 1226 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1227 * method no longer stores the display data for this WebView. The previous 1228 * behavior could potentially leak files if {@link #restoreState} was never 1229 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1230 * and restoring the display data. 1231 * @param outState The Bundle to store the WebView state. 1232 * @return The same copy of the back/forward list used to save the state. If 1233 * saveState fails, the returned list will be null. 1234 * @see #savePicture 1235 * @see #restorePicture 1236 */ 1237 public WebBackForwardList saveState(Bundle outState) { 1238 if (outState == null) { 1239 return null; 1240 } 1241 // We grab a copy of the back/forward list because a client of WebView 1242 // may have invalidated the history list by calling clearHistory. 1243 WebBackForwardList list = copyBackForwardList(); 1244 final int currentIndex = list.getCurrentIndex(); 1245 final int size = list.getSize(); 1246 // We should fail saving the state if the list is empty or the index is 1247 // not in a valid range. 1248 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1249 return null; 1250 } 1251 outState.putInt("index", currentIndex); 1252 // FIXME: This should just be a byte[][] instead of ArrayList but 1253 // Parcel.java does not have the code to handle multi-dimensional 1254 // arrays. 1255 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1256 for (int i = 0; i < size; i++) { 1257 WebHistoryItem item = list.getItemAtIndex(i); 1258 if (null == item) { 1259 // FIXME: this shouldn't happen 1260 // need to determine how item got set to null 1261 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1262 return null; 1263 } 1264 byte[] data = item.getFlattenedData(); 1265 if (data == null) { 1266 // It would be very odd to not have any data for a given history 1267 // item. And we will fail to rebuild the history list without 1268 // flattened data. 1269 return null; 1270 } 1271 history.add(data); 1272 } 1273 outState.putSerializable("history", history); 1274 if (mCertificate != null) { 1275 outState.putBundle("certificate", 1276 SslCertificate.saveState(mCertificate)); 1277 } 1278 return list; 1279 } 1280 1281 /** 1282 * Save the current display data to the Bundle given. Used in conjunction 1283 * with {@link #saveState}. 1284 * @param b A Bundle to store the display data. 1285 * @param dest The file to store the serialized picture data. Will be 1286 * overwritten with this WebView's picture data. 1287 * @return True if the picture was successfully saved. 1288 */ 1289 public boolean savePicture(Bundle b, final File dest) { 1290 if (dest == null || b == null) { 1291 return false; 1292 } 1293 final Picture p = capturePicture(); 1294 // Use a temporary file while writing to ensure the destination file 1295 // contains valid data. 1296 final File temp = new File(dest.getPath() + ".writing"); 1297 new Thread(new Runnable() { 1298 public void run() { 1299 FileOutputStream out = null; 1300 try { 1301 out = new FileOutputStream(temp); 1302 p.writeToStream(out); 1303 // Writing the picture succeeded, rename the temporary file 1304 // to the destination. 1305 temp.renameTo(dest); 1306 } catch (Exception e) { 1307 // too late to do anything about it. 1308 } finally { 1309 if (out != null) { 1310 try { 1311 out.close(); 1312 } catch (Exception e) { 1313 // Can't do anything about that 1314 } 1315 } 1316 temp.delete(); 1317 } 1318 } 1319 }).start(); 1320 // now update the bundle 1321 b.putInt("scrollX", mScrollX); 1322 b.putInt("scrollY", mScrollY); 1323 mZoomManager.saveZoomState(b); 1324 return true; 1325 } 1326 1327 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1328 int sx = b.getInt("scrollX", 0); 1329 int sy = b.getInt("scrollY", 0); 1330 1331 mDrawHistory = true; 1332 mHistoryPicture = p; 1333 mScrollX = sx; 1334 mScrollY = sy; 1335 mZoomManager.restoreZoomState(b); 1336 final float scale = mZoomManager.getScale(); 1337 mHistoryWidth = Math.round(p.getWidth() * scale); 1338 mHistoryHeight = Math.round(p.getHeight() * scale); 1339 1340 invalidate(); 1341 } 1342 1343 /** 1344 * Restore the display data that was save in {@link #savePicture}. Used in 1345 * conjunction with {@link #restoreState}. 1346 * @param b A Bundle containing the saved display data. 1347 * @param src The file where the picture data was stored. 1348 * @return True if the picture was successfully restored. 1349 */ 1350 public boolean restorePicture(Bundle b, File src) { 1351 if (src == null || b == null) { 1352 return false; 1353 } 1354 if (!src.exists()) { 1355 return false; 1356 } 1357 try { 1358 final FileInputStream in = new FileInputStream(src); 1359 final Bundle copy = new Bundle(b); 1360 new Thread(new Runnable() { 1361 public void run() { 1362 try { 1363 final Picture p = Picture.createFromStream(in); 1364 if (p != null) { 1365 // Post a runnable on the main thread to update the 1366 // history picture fields. 1367 mPrivateHandler.post(new Runnable() { 1368 public void run() { 1369 restoreHistoryPictureFields(p, copy); 1370 } 1371 }); 1372 } 1373 } finally { 1374 try { 1375 in.close(); 1376 } catch (Exception e) { 1377 // Nothing we can do now. 1378 } 1379 } 1380 } 1381 }).start(); 1382 } catch (FileNotFoundException e){ 1383 e.printStackTrace(); 1384 } 1385 return true; 1386 } 1387 1388 /** 1389 * Restore the state of this WebView from the given map used in 1390 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1391 * be called to restore the state of the WebView before using the object. If 1392 * it is called after the WebView has had a chance to build state (load 1393 * pages, create a back/forward list, etc.) there may be undesirable 1394 * side-effects. Please note that this method no longer restores the 1395 * display data for this WebView. See {@link #savePicture} and {@link 1396 * #restorePicture} for saving and restoring the display data. 1397 * @param inState The incoming Bundle of state. 1398 * @return The restored back/forward list or null if restoreState failed. 1399 * @see #savePicture 1400 * @see #restorePicture 1401 */ 1402 public WebBackForwardList restoreState(Bundle inState) { 1403 WebBackForwardList returnList = null; 1404 if (inState == null) { 1405 return returnList; 1406 } 1407 if (inState.containsKey("index") && inState.containsKey("history")) { 1408 mCertificate = SslCertificate.restoreState( 1409 inState.getBundle("certificate")); 1410 1411 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1412 final int index = inState.getInt("index"); 1413 // We can't use a clone of the list because we need to modify the 1414 // shared copy, so synchronize instead to prevent concurrent 1415 // modifications. 1416 synchronized (list) { 1417 final List<byte[]> history = 1418 (List<byte[]>) inState.getSerializable("history"); 1419 final int size = history.size(); 1420 // Check the index bounds so we don't crash in native code while 1421 // restoring the history index. 1422 if (index < 0 || index >= size) { 1423 return null; 1424 } 1425 for (int i = 0; i < size; i++) { 1426 byte[] data = history.remove(0); 1427 if (data == null) { 1428 // If we somehow have null data, we cannot reconstruct 1429 // the item and thus our history list cannot be rebuilt. 1430 return null; 1431 } 1432 WebHistoryItem item = new WebHistoryItem(data); 1433 list.addHistoryItem(item); 1434 } 1435 // Grab the most recent copy to return to the caller. 1436 returnList = copyBackForwardList(); 1437 // Update the copy to have the correct index. 1438 returnList.setCurrentIndex(index); 1439 } 1440 // Remove all pending messages because we are restoring previous 1441 // state. 1442 mWebViewCore.removeMessages(); 1443 // Send a restore state message. 1444 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1445 } 1446 return returnList; 1447 } 1448 1449 /** 1450 * Load the given url with the extra headers. 1451 * @param url The url of the resource to load. 1452 * @param extraHeaders The extra headers sent with this url. This should not 1453 * include the common headers like "user-agent". If it does, it 1454 * will be replaced by the intrinsic value of the WebView. 1455 */ 1456 public void loadUrl(String url, Map<String, String> extraHeaders) { 1457 switchOutDrawHistory(); 1458 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1459 arg.mUrl = url; 1460 arg.mExtraHeaders = extraHeaders; 1461 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1462 clearTextEntry(false); 1463 } 1464 1465 /** 1466 * Load the given url. 1467 * @param url The url of the resource to load. 1468 */ 1469 public void loadUrl(String url) { 1470 if (url == null) { 1471 return; 1472 } 1473 loadUrl(url, null); 1474 } 1475 1476 /** 1477 * Load the url with postData using "POST" method into the WebView. If url 1478 * is not a network url, it will be loaded with {link 1479 * {@link #loadUrl(String)} instead. 1480 * 1481 * @param url The url of the resource to load. 1482 * @param postData The data will be passed to "POST" request. 1483 */ 1484 public void postUrl(String url, byte[] postData) { 1485 if (URLUtil.isNetworkUrl(url)) { 1486 switchOutDrawHistory(); 1487 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1488 arg.mUrl = url; 1489 arg.mPostData = postData; 1490 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1491 clearTextEntry(false); 1492 } else { 1493 loadUrl(url); 1494 } 1495 } 1496 1497 /** 1498 * Load the given data into the WebView. This will load the data into 1499 * WebView using the data: scheme. Content loaded through this mechanism 1500 * does not have the ability to load content from the network. 1501 * @param data A String of data in the given encoding. The date must 1502 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1503 * %27, %3f respectively. 1504 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1505 * @param encoding The encoding of the data. i.e. utf-8, base64 1506 */ 1507 public void loadData(String data, String mimeType, String encoding) { 1508 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1509 } 1510 1511 /** 1512 * Load the given data into the WebView, use the provided URL as the base 1513 * URL for the content. The base URL is the URL that represents the page 1514 * that is loaded through this interface. As such, it is used to resolve any 1515 * relative URLs. The historyUrl is used for the history entry. 1516 * <p> 1517 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1518 * files through "file:///android_asset/" for the sub resources is more 1519 * restricted. If you provide null or empty string as baseUrl, you won't be 1520 * able to access asset files. If the baseUrl is anything other than 1521 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1522 * sub resources. 1523 * 1524 * @param baseUrl Url to resolve relative paths with, if null defaults to 1525 * "about:blank" 1526 * @param data A String of data in the given encoding. 1527 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1528 * defaults to "text/html" 1529 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1530 * @param historyUrl URL to use as the history entry. Can be null. 1531 */ 1532 public void loadDataWithBaseURL(String baseUrl, String data, 1533 String mimeType, String encoding, String historyUrl) { 1534 1535 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1536 loadData(data, mimeType, encoding); 1537 return; 1538 } 1539 switchOutDrawHistory(); 1540 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1541 arg.mBaseUrl = baseUrl; 1542 arg.mData = data; 1543 arg.mMimeType = mimeType; 1544 arg.mEncoding = encoding; 1545 arg.mHistoryUrl = historyUrl; 1546 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1547 clearTextEntry(false); 1548 } 1549 1550 /** 1551 * Saves the current view as a web archive. 1552 * 1553 * @param filename The filename where the archive should be placed. 1554 */ 1555 public void saveWebArchive(String filename) { 1556 saveWebArchive(filename, false, null); 1557 } 1558 1559 /* package */ static class SaveWebArchiveMessage { 1560 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1561 mBasename = basename; 1562 mAutoname = autoname; 1563 mCallback = callback; 1564 } 1565 1566 /* package */ final String mBasename; 1567 /* package */ final boolean mAutoname; 1568 /* package */ final ValueCallback<String> mCallback; 1569 /* package */ String mResultFile; 1570 } 1571 1572 /** 1573 * Saves the current view as a web archive. 1574 * 1575 * @param basename The filename where the archive should be placed. 1576 * @param autoname If false, takes basename to be a file. If true, basename 1577 * is assumed to be a directory in which a filename will be 1578 * chosen according to the url of the current page. 1579 * @param callback Called after the web archive has been saved. The 1580 * parameter for onReceiveValue will either be the filename 1581 * under which the file was saved, or null if saving the 1582 * file failed. 1583 */ 1584 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1585 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1586 new SaveWebArchiveMessage(basename, autoname, callback)); 1587 } 1588 1589 /** 1590 * Stop the current load. 1591 */ 1592 public void stopLoading() { 1593 // TODO: should we clear all the messages in the queue before sending 1594 // STOP_LOADING? 1595 switchOutDrawHistory(); 1596 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1597 } 1598 1599 /** 1600 * Reload the current url. 1601 */ 1602 public void reload() { 1603 clearTextEntry(false); 1604 switchOutDrawHistory(); 1605 mWebViewCore.sendMessage(EventHub.RELOAD); 1606 } 1607 1608 /** 1609 * Return true if this WebView has a back history item. 1610 * @return True iff this WebView has a back history item. 1611 */ 1612 public boolean canGoBack() { 1613 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1614 synchronized (l) { 1615 if (l.getClearPending()) { 1616 return false; 1617 } else { 1618 return l.getCurrentIndex() > 0; 1619 } 1620 } 1621 } 1622 1623 /** 1624 * Go back in the history of this WebView. 1625 */ 1626 public void goBack() { 1627 goBackOrForward(-1); 1628 } 1629 1630 /** 1631 * Return true if this WebView has a forward history item. 1632 * @return True iff this Webview has a forward history item. 1633 */ 1634 public boolean canGoForward() { 1635 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1636 synchronized (l) { 1637 if (l.getClearPending()) { 1638 return false; 1639 } else { 1640 return l.getCurrentIndex() < l.getSize() - 1; 1641 } 1642 } 1643 } 1644 1645 /** 1646 * Go forward in the history of this WebView. 1647 */ 1648 public void goForward() { 1649 goBackOrForward(1); 1650 } 1651 1652 /** 1653 * Return true if the page can go back or forward the given 1654 * number of steps. 1655 * @param steps The negative or positive number of steps to move the 1656 * history. 1657 */ 1658 public boolean canGoBackOrForward(int steps) { 1659 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1660 synchronized (l) { 1661 if (l.getClearPending()) { 1662 return false; 1663 } else { 1664 int newIndex = l.getCurrentIndex() + steps; 1665 return newIndex >= 0 && newIndex < l.getSize(); 1666 } 1667 } 1668 } 1669 1670 /** 1671 * Go to the history item that is the number of steps away from 1672 * the current item. Steps is negative if backward and positive 1673 * if forward. 1674 * @param steps The number of steps to take back or forward in the back 1675 * forward list. 1676 */ 1677 public void goBackOrForward(int steps) { 1678 goBackOrForward(steps, false); 1679 } 1680 1681 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1682 if (steps != 0) { 1683 clearTextEntry(false); 1684 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1685 ignoreSnapshot ? 1 : 0); 1686 } 1687 } 1688 1689 /** 1690 * Returns true if private browsing is enabled in this WebView. 1691 */ 1692 public boolean isPrivateBrowsingEnabled () { 1693 return getSettings().isPrivateBrowsingEnabled(); 1694 } 1695 1696 private void startPrivateBrowsing () { 1697 boolean wasPrivateBrowsingEnabled = isPrivateBrowsingEnabled(); 1698 1699 getSettings().setPrivateBrowsingEnabled(true); 1700 1701 if (!wasPrivateBrowsingEnabled) { 1702 StringBuilder data = new StringBuilder(1024); 1703 try { 1704 InputStreamReader file = new InputStreamReader(mContext.getResources().openRawResource(com.android.internal.R.raw.incognito_mode_start_page)); 1705 int size; 1706 char[] buffer = new char[1024]; 1707 while ((size = file.read(buffer)) != -1) { 1708 data.append(buffer, 0, size); 1709 } 1710 } catch (IOException e) { 1711 // This should never happen since this is a static resource. 1712 } 1713 loadDataWithBaseURL(null, data.toString(), "text/html", "utf-8", null); 1714 } 1715 } 1716 1717 private boolean extendScroll(int y) { 1718 int finalY = mScroller.getFinalY(); 1719 int newY = pinLocY(finalY + y); 1720 if (newY == finalY) return false; 1721 mScroller.setFinalY(newY); 1722 mScroller.extendDuration(computeDuration(0, y)); 1723 return true; 1724 } 1725 1726 /** 1727 * Scroll the contents of the view up by half the view size 1728 * @param top true to jump to the top of the page 1729 * @return true if the page was scrolled 1730 */ 1731 public boolean pageUp(boolean top) { 1732 if (mNativeClass == 0) { 1733 return false; 1734 } 1735 nativeClearCursor(); // start next trackball movement from page edge 1736 if (top) { 1737 // go to the top of the document 1738 return pinScrollTo(mScrollX, 0, true, 0); 1739 } 1740 // Page up 1741 int h = getHeight(); 1742 int y; 1743 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1744 y = -h + PAGE_SCROLL_OVERLAP; 1745 } else { 1746 y = -h / 2; 1747 } 1748 mUserScroll = true; 1749 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1750 : extendScroll(y); 1751 } 1752 1753 /** 1754 * Scroll the contents of the view down by half the page size 1755 * @param bottom true to jump to bottom of page 1756 * @return true if the page was scrolled 1757 */ 1758 public boolean pageDown(boolean bottom) { 1759 if (mNativeClass == 0) { 1760 return false; 1761 } 1762 nativeClearCursor(); // start next trackball movement from page edge 1763 if (bottom) { 1764 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1765 } 1766 // Page down. 1767 int h = getHeight(); 1768 int y; 1769 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1770 y = h - PAGE_SCROLL_OVERLAP; 1771 } else { 1772 y = h / 2; 1773 } 1774 mUserScroll = true; 1775 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1776 : extendScroll(y); 1777 } 1778 1779 /** 1780 * Clear the view so that onDraw() will draw nothing but white background, 1781 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1782 */ 1783 public void clearView() { 1784 mContentWidth = 0; 1785 mContentHeight = 0; 1786 nativeSetBaseLayer(0); 1787 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1788 } 1789 1790 /** 1791 * Return a new picture that captures the current display of the webview. 1792 * This is a copy of the display, and will be unaffected if the webview 1793 * later loads a different URL. 1794 * 1795 * @return a picture containing the current contents of the view. Note this 1796 * picture is of the entire document, and is not restricted to the 1797 * bounds of the view. 1798 */ 1799 public Picture capturePicture() { 1800 Picture result = new Picture(); 1801 nativeCopyBaseContentToPicture(result); 1802 return result; 1803 } 1804 1805 /** 1806 * Return true if the browser is displaying a TextView for text input. 1807 */ 1808 private boolean inEditingMode() { 1809 return mWebTextView != null && mWebTextView.getParent() != null; 1810 } 1811 1812 /** 1813 * Remove the WebTextView. 1814 * @param disableFocusController If true, send a message to webkit 1815 * disabling the focus controller, so the caret stops blinking. 1816 */ 1817 private void clearTextEntry(boolean disableFocusController) { 1818 if (inEditingMode()) { 1819 mWebTextView.remove(); 1820 if (disableFocusController) { 1821 setFocusControllerInactive(); 1822 } 1823 } 1824 } 1825 1826 /** 1827 * Return the current scale of the WebView 1828 * @return The current scale. 1829 */ 1830 public float getScale() { 1831 return mZoomManager.getScale(); 1832 } 1833 1834 /** 1835 * Set the initial scale for the WebView. 0 means default. If 1836 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1837 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1838 * WebView starts will this value as initial scale. 1839 * 1840 * @param scaleInPercent The initial scale in percent. 1841 */ 1842 public void setInitialScale(int scaleInPercent) { 1843 mZoomManager.setInitialScaleInPercent(scaleInPercent); 1844 } 1845 1846 /** 1847 * Invoke the graphical zoom picker widget for this WebView. This will 1848 * result in the zoom widget appearing on the screen to control the zoom 1849 * level of this WebView. 1850 */ 1851 public void invokeZoomPicker() { 1852 if (!getSettings().supportZoom()) { 1853 Log.w(LOGTAG, "This WebView doesn't support zoom."); 1854 return; 1855 } 1856 clearTextEntry(false); 1857 mZoomManager.invokeZoomPicker(); 1858 } 1859 1860 /** 1861 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 1862 * is found and the anchor has a non-javascript url, the HitTestResult type 1863 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 1864 * anchor does not have a url or if it is a javascript url, the type will 1865 * be UNKNOWN_TYPE and the url has to be retrieved through 1866 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1867 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 1868 * the "extra" field. A type of 1869 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 1870 * a child node. If a phone number is found, the HitTestResult type is set 1871 * to PHONE_TYPE and the phone number is set in the "extra" field of 1872 * HitTestResult. If a map address is found, the HitTestResult type is set 1873 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1874 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1875 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1876 * HitTestResult type is set to UNKNOWN_TYPE. 1877 */ 1878 public HitTestResult getHitTestResult() { 1879 if (mNativeClass == 0) { 1880 return null; 1881 } 1882 1883 HitTestResult result = new HitTestResult(); 1884 if (nativeHasCursorNode()) { 1885 if (nativeCursorIsTextInput()) { 1886 result.setType(HitTestResult.EDIT_TEXT_TYPE); 1887 } else { 1888 String text = nativeCursorText(); 1889 if (text != null) { 1890 if (text.startsWith(SCHEME_TEL)) { 1891 result.setType(HitTestResult.PHONE_TYPE); 1892 result.setExtra(text.substring(SCHEME_TEL.length())); 1893 } else if (text.startsWith(SCHEME_MAILTO)) { 1894 result.setType(HitTestResult.EMAIL_TYPE); 1895 result.setExtra(text.substring(SCHEME_MAILTO.length())); 1896 } else if (text.startsWith(SCHEME_GEO)) { 1897 result.setType(HitTestResult.GEO_TYPE); 1898 result.setExtra(URLDecoder.decode(text 1899 .substring(SCHEME_GEO.length()))); 1900 } else if (nativeCursorIsAnchor()) { 1901 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 1902 result.setExtra(text); 1903 } 1904 } 1905 } 1906 } 1907 int type = result.getType(); 1908 if (type == HitTestResult.UNKNOWN_TYPE 1909 || type == HitTestResult.SRC_ANCHOR_TYPE) { 1910 // Now check to see if it is an image. 1911 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1912 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1913 String text = nativeImageURI(contentX, contentY); 1914 if (text != null) { 1915 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 1916 HitTestResult.IMAGE_TYPE : 1917 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 1918 result.setExtra(text); 1919 } 1920 } 1921 return result; 1922 } 1923 1924 // Called by JNI when the DOM has changed the focus. Clear the focus so 1925 // that new keys will go to the newly focused field 1926 private void domChangedFocus() { 1927 if (inEditingMode()) { 1928 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 1929 } 1930 } 1931 /** 1932 * Request the href of an anchor element due to getFocusNodePath returning 1933 * "href." If hrefMsg is null, this method returns immediately and does not 1934 * dispatch hrefMsg to its target. 1935 * 1936 * @param hrefMsg This message will be dispatched with the result of the 1937 * request as the data member with "url" as key. The result can 1938 * be null. 1939 */ 1940 // FIXME: API change required to change the name of this function. We now 1941 // look at the cursor node, and not the focus node. Also, what is 1942 // getFocusNodePath? 1943 public void requestFocusNodeHref(Message hrefMsg) { 1944 if (hrefMsg == null || mNativeClass == 0) { 1945 return; 1946 } 1947 if (nativeCursorIsAnchor()) { 1948 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 1949 nativeCursorFramePointer(), nativeCursorNodePointer(), 1950 hrefMsg); 1951 } 1952 } 1953 1954 /** 1955 * Request the url of the image last touched by the user. msg will be sent 1956 * to its target with a String representing the url as its object. 1957 * 1958 * @param msg This message will be dispatched with the result of the request 1959 * as the data member with "url" as key. The result can be null. 1960 */ 1961 public void requestImageRef(Message msg) { 1962 if (0 == mNativeClass) return; // client isn't initialized 1963 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 1964 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 1965 String ref = nativeImageURI(contentX, contentY); 1966 Bundle data = msg.getData(); 1967 data.putString("url", ref); 1968 msg.setData(data); 1969 msg.sendToTarget(); 1970 } 1971 1972 static int pinLoc(int x, int viewMax, int docMax) { 1973// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 1974 if (docMax < viewMax) { // the doc has room on the sides for "blank" 1975 // pin the short document to the top/left of the screen 1976 x = 0; 1977// Log.d(LOGTAG, "--- center " + x); 1978 } else if (x < 0) { 1979 x = 0; 1980// Log.d(LOGTAG, "--- zero"); 1981 } else if (x + viewMax > docMax) { 1982 x = docMax - viewMax; 1983// Log.d(LOGTAG, "--- pin " + x); 1984 } 1985 return x; 1986 } 1987 1988 // Expects x in view coordinates 1989 int pinLocX(int x) { 1990 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 1991 } 1992 1993 // Expects y in view coordinates 1994 int pinLocY(int y) { 1995 return pinLoc(y, getViewHeightWithTitle(), 1996 computeVerticalScrollRange() + getTitleHeight()); 1997 } 1998 1999 /** 2000 * A title bar which is embedded in this WebView, and scrolls along with it 2001 * vertically, but not horizontally. 2002 */ 2003 private View mTitleBar; 2004 2005 /** 2006 * Since we draw the title bar ourselves, we removed the shadow from the 2007 * browser's activity. We do want a shadow at the bottom of the title bar, 2008 * or at the top of the screen if the title bar is not visible. This 2009 * drawable serves that purpose. 2010 */ 2011 private Drawable mTitleShadow; 2012 2013 /** 2014 * Add or remove a title bar to be embedded into the WebView, and scroll 2015 * along with it vertically, while remaining in view horizontally. Pass 2016 * null to remove the title bar from the WebView, and return to drawing 2017 * the WebView normally without translating to account for the title bar. 2018 * @hide 2019 */ 2020 public void setEmbeddedTitleBar(View v) { 2021 if (mTitleBar == v) return; 2022 if (mTitleBar != null) { 2023 removeView(mTitleBar); 2024 } 2025 if (null != v) { 2026 addView(v, new AbsoluteLayout.LayoutParams( 2027 ViewGroup.LayoutParams.MATCH_PARENT, 2028 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2029 if (mTitleShadow == null) { 2030 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 2031 com.android.internal.R.drawable.title_bar_shadow); 2032 } 2033 } 2034 mTitleBar = v; 2035 } 2036 2037 /** 2038 * Given a distance in view space, convert it to content space. Note: this 2039 * does not reflect translation, just scaling, so this should not be called 2040 * with coordinates, but should be called for dimensions like width or 2041 * height. 2042 */ 2043 private int viewToContentDimension(int d) { 2044 return Math.round(d * mZoomManager.getInvScale()); 2045 } 2046 2047 /** 2048 * Given an x coordinate in view space, convert it to content space. Also 2049 * may be used for absolute heights (such as for the WebTextView's 2050 * textSize, which is unaffected by the height of the title bar). 2051 */ 2052 /*package*/ int viewToContentX(int x) { 2053 return viewToContentDimension(x); 2054 } 2055 2056 /** 2057 * Given a y coordinate in view space, convert it to content space. 2058 * Takes into account the height of the title bar if there is one 2059 * embedded into the WebView. 2060 */ 2061 /*package*/ int viewToContentY(int y) { 2062 return viewToContentDimension(y - getTitleHeight()); 2063 } 2064 2065 /** 2066 * Given a x coordinate in view space, convert it to content space. 2067 * Returns the result as a float. 2068 */ 2069 private float viewToContentXf(int x) { 2070 return x * mZoomManager.getInvScale(); 2071 } 2072 2073 /** 2074 * Given a y coordinate in view space, convert it to content space. 2075 * Takes into account the height of the title bar if there is one 2076 * embedded into the WebView. Returns the result as a float. 2077 */ 2078 private float viewToContentYf(int y) { 2079 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2080 } 2081 2082 /** 2083 * Given a distance in content space, convert it to view space. Note: this 2084 * does not reflect translation, just scaling, so this should not be called 2085 * with coordinates, but should be called for dimensions like width or 2086 * height. 2087 */ 2088 /*package*/ int contentToViewDimension(int d) { 2089 return Math.round(d * mZoomManager.getScale()); 2090 } 2091 2092 /** 2093 * Given an x coordinate in content space, convert it to view 2094 * space. 2095 */ 2096 /*package*/ int contentToViewX(int x) { 2097 return contentToViewDimension(x); 2098 } 2099 2100 /** 2101 * Given a y coordinate in content space, convert it to view 2102 * space. Takes into account the height of the title bar. 2103 */ 2104 /*package*/ int contentToViewY(int y) { 2105 return contentToViewDimension(y) + getTitleHeight(); 2106 } 2107 2108 private Rect contentToViewRect(Rect x) { 2109 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2110 contentToViewX(x.right), contentToViewY(x.bottom)); 2111 } 2112 2113 /* To invalidate a rectangle in content coordinates, we need to transform 2114 the rect into view coordinates, so we can then call invalidate(...). 2115 2116 Normally, we would just call contentToView[XY](...), which eventually 2117 calls Math.round(coordinate * mActualScale). However, for invalidates, 2118 we need to account for the slop that occurs with antialiasing. To 2119 address that, we are a little more liberal in the size of the rect that 2120 we invalidate. 2121 2122 This liberal calculation calls floor() for the top/left, and ceil() for 2123 the bottom/right coordinates. This catches the possible extra pixels of 2124 antialiasing that we might have missed with just round(). 2125 */ 2126 2127 // Called by JNI to invalidate the View, given rectangle coordinates in 2128 // content space 2129 private void viewInvalidate(int l, int t, int r, int b) { 2130 final float scale = mZoomManager.getScale(); 2131 final int dy = getTitleHeight(); 2132 invalidate((int)Math.floor(l * scale), 2133 (int)Math.floor(t * scale) + dy, 2134 (int)Math.ceil(r * scale), 2135 (int)Math.ceil(b * scale) + dy); 2136 } 2137 2138 // Called by JNI to invalidate the View after a delay, given rectangle 2139 // coordinates in content space 2140 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2141 final float scale = mZoomManager.getScale(); 2142 final int dy = getTitleHeight(); 2143 postInvalidateDelayed(delay, 2144 (int)Math.floor(l * scale), 2145 (int)Math.floor(t * scale) + dy, 2146 (int)Math.ceil(r * scale), 2147 (int)Math.ceil(b * scale) + dy); 2148 } 2149 2150 private void invalidateContentRect(Rect r) { 2151 viewInvalidate(r.left, r.top, r.right, r.bottom); 2152 } 2153 2154 // stop the scroll animation, and don't let a subsequent fling add 2155 // to the existing velocity 2156 private void abortAnimation() { 2157 mScroller.abortAnimation(); 2158 mLastVelocity = 0; 2159 } 2160 2161 /* call from webcoreview.draw(), so we're still executing in the UI thread 2162 */ 2163 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2164 2165 // premature data from webkit, ignore 2166 if ((w | h) == 0) { 2167 return; 2168 } 2169 2170 // don't abort a scroll animation if we didn't change anything 2171 if (mContentWidth != w || mContentHeight != h) { 2172 // record new dimensions 2173 mContentWidth = w; 2174 mContentHeight = h; 2175 // If history Picture is drawn, don't update scroll. They will be 2176 // updated when we get out of that mode. 2177 if (!mDrawHistory) { 2178 // repin our scroll, taking into account the new content size 2179 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2180 if (!mScroller.isFinished()) { 2181 // We are in the middle of a scroll. Repin the final scroll 2182 // position. 2183 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2184 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2185 } 2186 } 2187 } 2188 contentSizeChanged(updateLayout); 2189 } 2190 2191 // Used to avoid sending many visible rect messages. 2192 private Rect mLastVisibleRectSent; 2193 private Rect mLastGlobalRect; 2194 2195 Rect sendOurVisibleRect() { 2196 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2197 2198 Rect rect = new Rect(); 2199 calcOurContentVisibleRect(rect); 2200 // Rect.equals() checks for null input. 2201 if (!rect.equals(mLastVisibleRectSent)) { 2202 Point pos = new Point(rect.left, rect.top); 2203 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2204 nativeMoveGeneration(), 0, pos); 2205 mLastVisibleRectSent = rect; 2206 } 2207 Rect globalRect = new Rect(); 2208 if (getGlobalVisibleRect(globalRect) 2209 && !globalRect.equals(mLastGlobalRect)) { 2210 if (DebugFlags.WEB_VIEW) { 2211 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2212 + globalRect.top + ",r=" + globalRect.right + ",b=" 2213 + globalRect.bottom); 2214 } 2215 // TODO: the global offset is only used by windowRect() 2216 // in ChromeClientAndroid ; other clients such as touch 2217 // and mouse events could return view + screen relative points. 2218 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2219 mLastGlobalRect = globalRect; 2220 } 2221 return rect; 2222 } 2223 2224 // Sets r to be the visible rectangle of our webview in view coordinates 2225 private void calcOurVisibleRect(Rect r) { 2226 Point p = new Point(); 2227 getGlobalVisibleRect(r, p); 2228 r.offset(-p.x, -p.y); 2229 } 2230 2231 // Sets r to be our visible rectangle in content coordinates 2232 private void calcOurContentVisibleRect(Rect r) { 2233 calcOurVisibleRect(r); 2234 // pin the rect to the bounds of the content 2235 r.left = Math.max(viewToContentX(r.left), 0); 2236 // viewToContentY will remove the total height of the title bar. Add 2237 // the visible height back in to account for the fact that if the title 2238 // bar is partially visible, the part of the visible rect which is 2239 // displaying our content is displaced by that amount. 2240 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2241 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2242 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2243 } 2244 2245 // Sets r to be our visible rectangle in content coordinates. We use this 2246 // method on the native side to compute the position of the fixed layers. 2247 // Uses floating coordinates (necessary to correctly place elements when 2248 // the scale factor is not 1) 2249 private void calcOurContentVisibleRectF(RectF r) { 2250 Rect ri = new Rect(0,0,0,0); 2251 calcOurVisibleRect(ri); 2252 // pin the rect to the bounds of the content 2253 r.left = Math.max(viewToContentXf(ri.left), 0.0f); 2254 // viewToContentY will remove the total height of the title bar. Add 2255 // the visible height back in to account for the fact that if the title 2256 // bar is partially visible, the part of the visible rect which is 2257 // displaying our content is displaced by that amount. 2258 r.top = Math.max(viewToContentYf(ri.top + getVisibleTitleHeight()), 0.0f); 2259 r.right = Math.min(viewToContentXf(ri.right), (float)mContentWidth); 2260 r.bottom = Math.min(viewToContentYf(ri.bottom), (float)mContentHeight); 2261 } 2262 2263 static class ViewSizeData { 2264 int mWidth; 2265 int mHeight; 2266 int mTextWrapWidth; 2267 int mAnchorX; 2268 int mAnchorY; 2269 float mScale; 2270 boolean mIgnoreHeight; 2271 } 2272 2273 /** 2274 * Compute unzoomed width and height, and if they differ from the last 2275 * values we sent, send them to webkit (to be used as new viewport) 2276 * 2277 * @param force ensures that the message is sent to webkit even if the width 2278 * or height has not changed since the last message 2279 * 2280 * @return true if new values were sent 2281 */ 2282 boolean sendViewSizeZoom(boolean force) { 2283 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2284 2285 int viewWidth = getViewWidth(); 2286 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2287 int newHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2288 /* 2289 * Because the native side may have already done a layout before the 2290 * View system was able to measure us, we have to send a height of 0 to 2291 * remove excess whitespace when we grow our width. This will trigger a 2292 * layout and a change in content size. This content size change will 2293 * mean that contentSizeChanged will either call this method directly or 2294 * indirectly from onSizeChanged. 2295 */ 2296 if (newWidth > mLastWidthSent && mWrapContent) { 2297 newHeight = 0; 2298 } 2299 // Avoid sending another message if the dimensions have not changed. 2300 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force) { 2301 ViewSizeData data = new ViewSizeData(); 2302 data.mWidth = newWidth; 2303 data.mHeight = newHeight; 2304 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2305 data.mScale = mZoomManager.getScale(); 2306 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2307 && !mHeightCanMeasure; 2308 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2309 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2310 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2311 mLastWidthSent = newWidth; 2312 mLastHeightSent = newHeight; 2313 mZoomManager.clearDocumentAnchor(); 2314 return true; 2315 } 2316 return false; 2317 } 2318 2319 @Override 2320 protected int computeHorizontalScrollRange() { 2321 if (mDrawHistory) { 2322 return mHistoryWidth; 2323 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2324 && !mZoomManager.canZoomOut()) { 2325 // only honor the scrollbar mode when it is at minimum zoom level 2326 return computeHorizontalScrollExtent(); 2327 } else { 2328 // to avoid rounding error caused unnecessary scrollbar, use floor 2329 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2330 } 2331 } 2332 2333 @Override 2334 protected int computeVerticalScrollRange() { 2335 if (mDrawHistory) { 2336 return mHistoryHeight; 2337 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2338 && !mZoomManager.canZoomOut()) { 2339 // only honor the scrollbar mode when it is at minimum zoom level 2340 return computeVerticalScrollExtent(); 2341 } else { 2342 // to avoid rounding error caused unnecessary scrollbar, use floor 2343 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2344 } 2345 } 2346 2347 @Override 2348 protected int computeVerticalScrollOffset() { 2349 return Math.max(mScrollY - getTitleHeight(), 0); 2350 } 2351 2352 @Override 2353 protected int computeVerticalScrollExtent() { 2354 return getViewHeight(); 2355 } 2356 2357 /** @hide */ 2358 @Override 2359 protected void onDrawVerticalScrollBar(Canvas canvas, 2360 Drawable scrollBar, 2361 int l, int t, int r, int b) { 2362 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2363 scrollBar.draw(canvas); 2364 } 2365 2366 /** 2367 * Get the url for the current page. This is not always the same as the url 2368 * passed to WebViewClient.onPageStarted because although the load for 2369 * that url has begun, the current page may not have changed. 2370 * @return The url for the current page. 2371 */ 2372 public String getUrl() { 2373 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2374 return h != null ? h.getUrl() : null; 2375 } 2376 2377 /** 2378 * Get the original url for the current page. This is not always the same 2379 * as the url passed to WebViewClient.onPageStarted because although the 2380 * load for that url has begun, the current page may not have changed. 2381 * Also, there may have been redirects resulting in a different url to that 2382 * originally requested. 2383 * @return The url that was originally requested for the current page. 2384 */ 2385 public String getOriginalUrl() { 2386 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2387 return h != null ? h.getOriginalUrl() : null; 2388 } 2389 2390 /** 2391 * Get the title for the current page. This is the title of the current page 2392 * until WebViewClient.onReceivedTitle is called. 2393 * @return The title for the current page. 2394 */ 2395 public String getTitle() { 2396 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2397 return h != null ? h.getTitle() : null; 2398 } 2399 2400 /** 2401 * Get the favicon for the current page. This is the favicon of the current 2402 * page until WebViewClient.onReceivedIcon is called. 2403 * @return The favicon for the current page. 2404 */ 2405 public Bitmap getFavicon() { 2406 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2407 return h != null ? h.getFavicon() : null; 2408 } 2409 2410 /** 2411 * Get the touch icon url for the apple-touch-icon <link> element, or 2412 * a URL on this site's server pointing to the standard location of a 2413 * touch icon. 2414 * @hide 2415 */ 2416 public String getTouchIconUrl() { 2417 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2418 return h != null ? h.getTouchIconUrl() : null; 2419 } 2420 2421 /** 2422 * Get the progress for the current page. 2423 * @return The progress for the current page between 0 and 100. 2424 */ 2425 public int getProgress() { 2426 return mCallbackProxy.getProgress(); 2427 } 2428 2429 /** 2430 * @return the height of the HTML content. 2431 */ 2432 public int getContentHeight() { 2433 return mContentHeight; 2434 } 2435 2436 /** 2437 * @return the width of the HTML content. 2438 * @hide 2439 */ 2440 public int getContentWidth() { 2441 return mContentWidth; 2442 } 2443 2444 /** 2445 * Pause all layout, parsing, and javascript timers for all webviews. This 2446 * is a global requests, not restricted to just this webview. This can be 2447 * useful if the application has been paused. 2448 */ 2449 public void pauseTimers() { 2450 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2451 } 2452 2453 /** 2454 * Resume all layout, parsing, and javascript timers for all webviews. 2455 * This will resume dispatching all timers. 2456 */ 2457 public void resumeTimers() { 2458 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2459 } 2460 2461 /** 2462 * Call this to pause any extra processing associated with this view and 2463 * its associated DOM/plugins/javascript/etc. For example, if the view is 2464 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2465 * network traffic. When the view is again "active", call onResume(). 2466 * 2467 * Note that this differs from pauseTimers(), which affects all views/DOMs 2468 * @hide 2469 */ 2470 public void onPause() { 2471 if (!mIsPaused) { 2472 mIsPaused = true; 2473 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2474 } 2475 } 2476 2477 /** 2478 * Call this to balanace a previous call to onPause() 2479 * @hide 2480 */ 2481 public void onResume() { 2482 if (mIsPaused) { 2483 mIsPaused = false; 2484 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2485 } 2486 } 2487 2488 /** 2489 * Returns true if the view is paused, meaning onPause() was called. Calling 2490 * onResume() sets the paused state back to false. 2491 * @hide 2492 */ 2493 public boolean isPaused() { 2494 return mIsPaused; 2495 } 2496 2497 /** 2498 * Call this to inform the view that memory is low so that it can 2499 * free any available memory. 2500 */ 2501 public void freeMemory() { 2502 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2503 } 2504 2505 /** 2506 * Clear the resource cache. Note that the cache is per-application, so 2507 * this will clear the cache for all WebViews used. 2508 * 2509 * @param includeDiskFiles If false, only the RAM cache is cleared. 2510 */ 2511 public void clearCache(boolean includeDiskFiles) { 2512 // Note: this really needs to be a static method as it clears cache for all 2513 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2514 // we can't make this static. 2515 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2516 includeDiskFiles ? 1 : 0, 0); 2517 } 2518 2519 /** 2520 * Make sure that clearing the form data removes the adapter from the 2521 * currently focused textfield if there is one. 2522 */ 2523 public void clearFormData() { 2524 if (inEditingMode()) { 2525 AutoCompleteAdapter adapter = null; 2526 mWebTextView.setAdapterCustom(adapter); 2527 } 2528 } 2529 2530 /** 2531 * Tell the WebView to clear its internal back/forward list. 2532 */ 2533 public void clearHistory() { 2534 mCallbackProxy.getBackForwardList().setClearPending(); 2535 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2536 } 2537 2538 /** 2539 * Clear the SSL preferences table stored in response to proceeding with SSL 2540 * certificate errors. 2541 */ 2542 public void clearSslPreferences() { 2543 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2544 } 2545 2546 /** 2547 * Return the WebBackForwardList for this WebView. This contains the 2548 * back/forward list for use in querying each item in the history stack. 2549 * This is a copy of the private WebBackForwardList so it contains only a 2550 * snapshot of the current state. Multiple calls to this method may return 2551 * different objects. The object returned from this method will not be 2552 * updated to reflect any new state. 2553 */ 2554 public WebBackForwardList copyBackForwardList() { 2555 return mCallbackProxy.getBackForwardList().clone(); 2556 } 2557 2558 /* 2559 * Highlight and scroll to the next occurance of String in findAll. 2560 * Wraps the page infinitely, and scrolls. Must be called after 2561 * calling findAll. 2562 * 2563 * @param forward Direction to search. 2564 */ 2565 public void findNext(boolean forward) { 2566 if (0 == mNativeClass) return; // client isn't initialized 2567 nativeFindNext(forward); 2568 } 2569 2570 /* 2571 * Find all instances of find on the page and highlight them. 2572 * @param find String to find. 2573 * @return int The number of occurances of the String "find" 2574 * that were found. 2575 */ 2576 public int findAll(String find) { 2577 if (0 == mNativeClass) return 0; // client isn't initialized 2578 int result = find != null ? nativeFindAll(find.toLowerCase(), 2579 find.toUpperCase()) : 0; 2580 invalidate(); 2581 mLastFind = find; 2582 return result; 2583 } 2584 2585 /** 2586 * @hide 2587 */ 2588 public void setFindIsUp(boolean isUp) { 2589 mFindIsUp = isUp; 2590 if (0 == mNativeClass) return; // client isn't initialized 2591 nativeSetFindIsUp(isUp); 2592 } 2593 2594 /** 2595 * @hide 2596 */ 2597 public int findIndex() { 2598 if (0 == mNativeClass) return -1; 2599 return nativeFindIndex(); 2600 } 2601 2602 // Used to know whether the find dialog is open. Affects whether 2603 // or not we draw the highlights for matches. 2604 private boolean mFindIsUp; 2605 2606 // Keep track of the last string sent, so we can search again after an 2607 // orientation change or the dismissal of the soft keyboard. 2608 private String mLastFind; 2609 2610 /** 2611 * Return the first substring consisting of the address of a physical 2612 * location. Currently, only addresses in the United States are detected, 2613 * and consist of: 2614 * - a house number 2615 * - a street name 2616 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2617 * - a city name 2618 * - a state or territory, either spelled out or two-letter abbr. 2619 * - an optional 5 digit or 9 digit zip code. 2620 * 2621 * All names must be correctly capitalized, and the zip code, if present, 2622 * must be valid for the state. The street type must be a standard USPS 2623 * spelling or abbreviation. The state or territory must also be spelled 2624 * or abbreviated using USPS standards. The house number may not exceed 2625 * five digits. 2626 * @param addr The string to search for addresses. 2627 * 2628 * @return the address, or if no address is found, return null. 2629 */ 2630 public static String findAddress(String addr) { 2631 return findAddress(addr, false); 2632 } 2633 2634 /** 2635 * @hide 2636 * Return the first substring consisting of the address of a physical 2637 * location. Currently, only addresses in the United States are detected, 2638 * and consist of: 2639 * - a house number 2640 * - a street name 2641 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2642 * - a city name 2643 * - a state or territory, either spelled out or two-letter abbr. 2644 * - an optional 5 digit or 9 digit zip code. 2645 * 2646 * Names are optionally capitalized, and the zip code, if present, 2647 * must be valid for the state. The street type must be a standard USPS 2648 * spelling or abbreviation. The state or territory must also be spelled 2649 * or abbreviated using USPS standards. The house number may not exceed 2650 * five digits. 2651 * @param addr The string to search for addresses. 2652 * @param caseInsensitive addr Set to true to make search ignore case. 2653 * 2654 * @return the address, or if no address is found, return null. 2655 */ 2656 public static String findAddress(String addr, boolean caseInsensitive) { 2657 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2658 } 2659 2660 /* 2661 * Clear the highlighting surrounding text matches created by findAll. 2662 */ 2663 public void clearMatches() { 2664 mLastFind = ""; 2665 if (mNativeClass == 0) 2666 return; 2667 nativeSetFindIsEmpty(); 2668 invalidate(); 2669 } 2670 2671 /** 2672 * @hide 2673 */ 2674 public void notifyFindDialogDismissed() { 2675 if (mWebViewCore == null) { 2676 return; 2677 } 2678 clearMatches(); 2679 setFindIsUp(false); 2680 // Now that the dialog has been removed, ensure that we scroll to a 2681 // location that is not beyond the end of the page. 2682 pinScrollTo(mScrollX, mScrollY, false, 0); 2683 invalidate(); 2684 } 2685 2686 /** 2687 * Query the document to see if it contains any image references. The 2688 * message object will be dispatched with arg1 being set to 1 if images 2689 * were found and 0 if the document does not reference any images. 2690 * @param response The message that will be dispatched with the result. 2691 */ 2692 public void documentHasImages(Message response) { 2693 if (response == null) { 2694 return; 2695 } 2696 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2697 } 2698 2699 /** 2700 * Request the scroller to abort any ongoing animation 2701 * 2702 * @hide 2703 */ 2704 public void stopScroll() { 2705 mScroller.forceFinished(true); 2706 mLastVelocity = 0; 2707 } 2708 2709 @Override 2710 public void computeScroll() { 2711 if (mScroller.computeScrollOffset()) { 2712 int oldX = mScrollX; 2713 int oldY = mScrollY; 2714 mScrollX = mScroller.getCurrX(); 2715 mScrollY = mScroller.getCurrY(); 2716 postInvalidate(); // So we draw again 2717 if (oldX != mScrollX || oldY != mScrollY) { 2718 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2719 } else { 2720 abortAnimation(); 2721 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 2722 WebViewCore.resumePriority(); 2723 WebViewCore.resumeUpdatePicture(mWebViewCore); 2724 } 2725 } else { 2726 super.computeScroll(); 2727 } 2728 } 2729 2730 private static int computeDuration(int dx, int dy) { 2731 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2732 int duration = distance * 1000 / STD_SPEED; 2733 return Math.min(duration, MAX_DURATION); 2734 } 2735 2736 // helper to pin the scrollBy parameters (already in view coordinates) 2737 // returns true if the scroll was changed 2738 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2739 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2740 } 2741 // helper to pin the scrollTo parameters (already in view coordinates) 2742 // returns true if the scroll was changed 2743 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2744 x = pinLocX(x); 2745 y = pinLocY(y); 2746 int dx = x - mScrollX; 2747 int dy = y - mScrollY; 2748 2749 if ((dx | dy) == 0) { 2750 return false; 2751 } 2752 if (animate) { 2753 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2754 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2755 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2756 awakenScrollBars(mScroller.getDuration()); 2757 invalidate(); 2758 } else { 2759 abortAnimation(); // just in case 2760 scrollTo(x, y); 2761 } 2762 return true; 2763 } 2764 2765 // Scale from content to view coordinates, and pin. 2766 // Also called by jni webview.cpp 2767 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2768 if (mDrawHistory) { 2769 // disallow WebView to change the scroll position as History Picture 2770 // is used in the view system. 2771 // TODO: as we switchOutDrawHistory when trackball or navigation 2772 // keys are hit, this should be safe. Right? 2773 return false; 2774 } 2775 cx = contentToViewDimension(cx); 2776 cy = contentToViewDimension(cy); 2777 if (mHeightCanMeasure) { 2778 // move our visible rect according to scroll request 2779 if (cy != 0) { 2780 Rect tempRect = new Rect(); 2781 calcOurVisibleRect(tempRect); 2782 tempRect.offset(cx, cy); 2783 requestRectangleOnScreen(tempRect); 2784 } 2785 // FIXME: We scroll horizontally no matter what because currently 2786 // ScrollView and ListView will not scroll horizontally. 2787 // FIXME: Why do we only scroll horizontally if there is no 2788 // vertical scroll? 2789// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 2790 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 2791 } else { 2792 return pinScrollBy(cx, cy, animate, 0); 2793 } 2794 } 2795 2796 /** 2797 * Called by CallbackProxy when the page finishes loading. 2798 * @param url The URL of the page which has finished loading. 2799 */ 2800 /* package */ void onPageFinished(String url) { 2801 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 2802 // If the user is now on a different page, or has scrolled the page 2803 // past the point where the title bar is offscreen, ignore the 2804 // scroll request. 2805 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 2806 && mScrollX == 0 && mScrollY == 0) { 2807 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 2808 SLIDE_TITLE_DURATION); 2809 } 2810 mPageThatNeedsToSlideTitleBarOffScreen = null; 2811 } 2812 2813 injectAccessibilityForUrl(url); 2814 } 2815 2816 /** 2817 * This method injects accessibility in the loaded document if accessibility 2818 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 2819 * If no URL specific script is found or JavaScript is disabled we fallback to 2820 * the default {@link AccessibilityInjector} implementation. 2821 * 2822 * @param url The URL loaded by this {@link WebView}. 2823 */ 2824 private void injectAccessibilityForUrl(String url) { 2825 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 2826 if (getSettings().getJavaScriptEnabled()) { 2827 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 2828 } else if (mAccessibilityInjector == null) { 2829 mAccessibilityInjector = new AccessibilityInjector(this); 2830 } 2831 } else { 2832 // it is possible that accessibility was turned off between reloads 2833 mAccessibilityInjector = null; 2834 } 2835 } 2836 2837 /** 2838 * The URL of a page that sent a message to scroll the title bar off screen. 2839 * 2840 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 2841 * title bar off the screen. Sometimes, the scroll position is set before 2842 * the page finishes loading. Rather than scrolling while the page is still 2843 * loading, keep track of the URL and new scroll position so we can perform 2844 * the scroll once the page finishes loading. 2845 */ 2846 private String mPageThatNeedsToSlideTitleBarOffScreen; 2847 2848 /** 2849 * The destination Y scroll position to be used when the page finishes 2850 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 2851 */ 2852 private int mYDistanceToSlideTitleOffScreen; 2853 2854 // scale from content to view coordinates, and pin 2855 // return true if pin caused the final x/y different than the request cx/cy, 2856 // and a future scroll may reach the request cx/cy after our size has 2857 // changed 2858 // return false if the view scroll to the exact position as it is requested, 2859 // where negative numbers are taken to mean 0 2860 private boolean setContentScrollTo(int cx, int cy) { 2861 if (mDrawHistory) { 2862 // disallow WebView to change the scroll position as History Picture 2863 // is used in the view system. 2864 // One known case where this is called is that WebCore tries to 2865 // restore the scroll position. As history Picture already uses the 2866 // saved scroll position, it is ok to skip this. 2867 return false; 2868 } 2869 int vx; 2870 int vy; 2871 if ((cx | cy) == 0) { 2872 // If the page is being scrolled to (0,0), do not add in the title 2873 // bar's height, and simply scroll to (0,0). (The only other work 2874 // in contentToView_ is to multiply, so this would not change 0.) 2875 vx = 0; 2876 vy = 0; 2877 } else { 2878 vx = contentToViewX(cx); 2879 vy = contentToViewY(cy); 2880 } 2881// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 2882// vx + " " + vy + "]"); 2883 // Some mobile sites attempt to scroll the title bar off the page by 2884 // scrolling to (0,1). If we are at the top left corner of the 2885 // page, assume this is an attempt to scroll off the title bar, and 2886 // animate the title bar off screen slowly enough that the user can see 2887 // it. 2888 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 2889 && mTitleBar != null) { 2890 // FIXME: 100 should be defined somewhere as our max progress. 2891 if (getProgress() < 100) { 2892 // Wait to scroll the title bar off screen until the page has 2893 // finished loading. Keep track of the URL and the destination 2894 // Y position 2895 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 2896 mYDistanceToSlideTitleOffScreen = vy; 2897 } else { 2898 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 2899 } 2900 // Since we are animating, we have not yet reached the desired 2901 // scroll position. Do not return true to request another attempt 2902 return false; 2903 } 2904 pinScrollTo(vx, vy, false, 0); 2905 // If the request was to scroll to a negative coordinate, treat it as if 2906 // it was a request to scroll to 0 2907 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 2908 return true; 2909 } else { 2910 return false; 2911 } 2912 } 2913 2914 // scale from content to view coordinates, and pin 2915 private void spawnContentScrollTo(int cx, int cy) { 2916 if (mDrawHistory) { 2917 // disallow WebView to change the scroll position as History Picture 2918 // is used in the view system. 2919 return; 2920 } 2921 int vx = contentToViewX(cx); 2922 int vy = contentToViewY(cy); 2923 pinScrollTo(vx, vy, true, 0); 2924 } 2925 2926 /** 2927 * These are from webkit, and are in content coordinate system (unzoomed) 2928 */ 2929 private void contentSizeChanged(boolean updateLayout) { 2930 // suppress 0,0 since we usually see real dimensions soon after 2931 // this avoids drawing the prev content in a funny place. If we find a 2932 // way to consolidate these notifications, this check may become 2933 // obsolete 2934 if ((mContentWidth | mContentHeight) == 0) { 2935 return; 2936 } 2937 2938 if (mHeightCanMeasure) { 2939 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 2940 || updateLayout) { 2941 requestLayout(); 2942 } 2943 } else if (mWidthCanMeasure) { 2944 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 2945 || updateLayout) { 2946 requestLayout(); 2947 } 2948 } else { 2949 // If we don't request a layout, try to send our view size to the 2950 // native side to ensure that WebCore has the correct dimensions. 2951 sendViewSizeZoom(false); 2952 } 2953 } 2954 2955 /** 2956 * Set the WebViewClient that will receive various notifications and 2957 * requests. This will replace the current handler. 2958 * @param client An implementation of WebViewClient. 2959 */ 2960 public void setWebViewClient(WebViewClient client) { 2961 mCallbackProxy.setWebViewClient(client); 2962 } 2963 2964 /** 2965 * Gets the WebViewClient 2966 * @return the current WebViewClient instance. 2967 * 2968 *@hide pending API council approval. 2969 */ 2970 public WebViewClient getWebViewClient() { 2971 return mCallbackProxy.getWebViewClient(); 2972 } 2973 2974 /** 2975 * Register the interface to be used when content can not be handled by 2976 * the rendering engine, and should be downloaded instead. This will replace 2977 * the current handler. 2978 * @param listener An implementation of DownloadListener. 2979 */ 2980 public void setDownloadListener(DownloadListener listener) { 2981 mCallbackProxy.setDownloadListener(listener); 2982 } 2983 2984 /** 2985 * Set the chrome handler. This is an implementation of WebChromeClient for 2986 * use in handling Javascript dialogs, favicons, titles, and the progress. 2987 * This will replace the current handler. 2988 * @param client An implementation of WebChromeClient. 2989 */ 2990 public void setWebChromeClient(WebChromeClient client) { 2991 mCallbackProxy.setWebChromeClient(client); 2992 } 2993 2994 /** 2995 * Gets the chrome handler. 2996 * @return the current WebChromeClient instance. 2997 * 2998 * @hide API council approval. 2999 */ 3000 public WebChromeClient getWebChromeClient() { 3001 return mCallbackProxy.getWebChromeClient(); 3002 } 3003 3004 /** 3005 * Set the back/forward list client. This is an implementation of 3006 * WebBackForwardListClient for handling new items and changes in the 3007 * history index. 3008 * @param client An implementation of WebBackForwardListClient. 3009 * {@hide} 3010 */ 3011 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3012 mCallbackProxy.setWebBackForwardListClient(client); 3013 } 3014 3015 /** 3016 * Gets the WebBackForwardListClient. 3017 * {@hide} 3018 */ 3019 public WebBackForwardListClient getWebBackForwardListClient() { 3020 return mCallbackProxy.getWebBackForwardListClient(); 3021 } 3022 3023 /** 3024 * Set the Picture listener. This is an interface used to receive 3025 * notifications of a new Picture. 3026 * @param listener An implementation of WebView.PictureListener. 3027 */ 3028 public void setPictureListener(PictureListener listener) { 3029 mPictureListener = listener; 3030 } 3031 3032 /** 3033 * {@hide} 3034 */ 3035 /* FIXME: Debug only! Remove for SDK! */ 3036 public void externalRepresentation(Message callback) { 3037 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3038 } 3039 3040 /** 3041 * {@hide} 3042 */ 3043 /* FIXME: Debug only! Remove for SDK! */ 3044 public void documentAsText(Message callback) { 3045 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3046 } 3047 3048 /** 3049 * Use this function to bind an object to Javascript so that the 3050 * methods can be accessed from Javascript. 3051 * <p><strong>IMPORTANT:</strong> 3052 * <ul> 3053 * <li> Using addJavascriptInterface() allows JavaScript to control your 3054 * application. This can be a very useful feature or a dangerous security 3055 * issue. When the HTML in the WebView is untrustworthy (for example, part 3056 * or all of the HTML is provided by some person or process), then an 3057 * attacker could inject HTML that will execute your code and possibly any 3058 * code of the attacker's choosing.<br> 3059 * Do not use addJavascriptInterface() unless all of the HTML in this 3060 * WebView was written by you.</li> 3061 * <li> The Java object that is bound runs in another thread and not in 3062 * the thread that it was constructed in.</li> 3063 * </ul></p> 3064 * @param obj The class instance to bind to Javascript 3065 * @param interfaceName The name to used to expose the class in Javascript 3066 */ 3067 public void addJavascriptInterface(Object obj, String interfaceName) { 3068 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3069 arg.mObject = obj; 3070 arg.mInterfaceName = interfaceName; 3071 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3072 } 3073 3074 /** 3075 * Return the WebSettings object used to control the settings for this 3076 * WebView. 3077 * @return A WebSettings object that can be used to control this WebView's 3078 * settings. 3079 */ 3080 public WebSettings getSettings() { 3081 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3082 } 3083 3084 /** 3085 * Use this method to inform the webview about packages that are installed 3086 * in the system. This information will be used by the 3087 * navigator.isApplicationInstalled() API. 3088 * @param packageNames is a set of package names that are known to be 3089 * installed in the system. 3090 * 3091 * @hide not a public API 3092 */ 3093 public void addPackageNames(Set<String> packageNames) { 3094 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, packageNames); 3095 } 3096 3097 /** 3098 * Use this method to inform the webview about single packages that are 3099 * installed in the system. This information will be used by the 3100 * navigator.isApplicationInstalled() API. 3101 * @param packageName is the name of a package that is known to be 3102 * installed in the system. 3103 * 3104 * @hide not a public API 3105 */ 3106 public void addPackageName(String packageName) { 3107 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 3108 } 3109 3110 /** 3111 * Use this method to inform the webview about packages that are uninstalled 3112 * in the system. This information will be used by the 3113 * navigator.isApplicationInstalled() API. 3114 * @param packageName is the name of a package that has been uninstalled in 3115 * the system. 3116 * 3117 * @hide not a public API 3118 */ 3119 public void removePackageName(String packageName) { 3120 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 3121 } 3122 3123 /** 3124 * Return the list of currently loaded plugins. 3125 * @return The list of currently loaded plugins. 3126 * 3127 * @deprecated This was used for Gears, which has been deprecated. 3128 */ 3129 @Deprecated 3130 public static synchronized PluginList getPluginList() { 3131 return new PluginList(); 3132 } 3133 3134 /** 3135 * @deprecated This was used for Gears, which has been deprecated. 3136 */ 3137 @Deprecated 3138 public void refreshPlugins(boolean reloadOpenPages) { } 3139 3140 //------------------------------------------------------------------------- 3141 // Override View methods 3142 //------------------------------------------------------------------------- 3143 3144 @Override 3145 protected void finalize() throws Throwable { 3146 try { 3147 destroy(); 3148 } finally { 3149 super.finalize(); 3150 } 3151 } 3152 3153 @Override 3154 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3155 if (child == mTitleBar) { 3156 // When drawing the title bar, move it horizontally to always show 3157 // at the top of the WebView. 3158 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3159 } 3160 return super.drawChild(canvas, child, drawingTime); 3161 } 3162 3163 private void drawContent(Canvas canvas) { 3164 // Update the buttons in the picture, so when we draw the picture 3165 // to the screen, they are in the correct state. 3166 // Tell the native side if user is a) touching the screen, 3167 // b) pressing the trackball down, or c) pressing the enter key 3168 // If the cursor is on a button, we need to draw it in the pressed 3169 // state. 3170 // If mNativeClass is 0, we should not reach here, so we do not 3171 // need to check it again. 3172 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3173 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3174 || mTrackballDown || mGotCenterDown, false); 3175 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3176 } 3177 3178 @Override 3179 protected void onDraw(Canvas canvas) { 3180 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3181 if (mNativeClass == 0) { 3182 return; 3183 } 3184 3185 // if both mContentWidth and mContentHeight are 0, it means there is no 3186 // valid Picture passed to WebView yet. This can happen when WebView 3187 // just starts. Draw the background and return. 3188 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3189 canvas.drawColor(mBackgroundColor); 3190 return; 3191 } 3192 3193 int saveCount = canvas.save(); 3194 if (mTitleBar != null) { 3195 canvas.translate(0, (int) mTitleBar.getHeight()); 3196 } 3197 if (mDragTrackerHandler == null) { 3198 drawContent(canvas); 3199 } else { 3200 if (!mDragTrackerHandler.draw(canvas)) { 3201 // sometimes the tracker doesn't draw, even though its active 3202 drawContent(canvas); 3203 } 3204 if (mDragTrackerHandler.isFinished()) { 3205 mDragTrackerHandler = null; 3206 } 3207 } 3208 canvas.restoreToCount(saveCount); 3209 3210 // Now draw the shadow. 3211 int titleH = getVisibleTitleHeight(); 3212 if (mTitleBar != null && titleH == 0) { 3213 int height = (int) (5f * getContext().getResources() 3214 .getDisplayMetrics().density); 3215 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3216 mScrollY + height); 3217 mTitleShadow.draw(canvas); 3218 } 3219 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3220 invalidate(); 3221 } 3222 if (inEditingMode()) mWebTextView.onDrawSubstitute(); 3223 mWebViewCore.signalRepaintDone(); 3224 3225 // paint the highlight in the end 3226 if (!mTouchHighlightRegion.isEmpty()) { 3227 if (mTouchHightlightPaint == null) { 3228 mTouchHightlightPaint = new Paint(); 3229 mTouchHightlightPaint.setColor(mHightlightColor); 3230 mTouchHightlightPaint.setAntiAlias(true); 3231 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3232 TOUCH_HIGHLIGHT_ARC)); 3233 } 3234 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3235 mTouchHightlightPaint); 3236 } 3237 if (DEBUG_TOUCH_HIGHLIGHT) { 3238 if (getSettings().getNavDump()) { 3239 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3240 if (mTouchCrossHairColor == null) { 3241 mTouchCrossHairColor = new Paint(); 3242 mTouchCrossHairColor.setColor(Color.RED); 3243 } 3244 canvas.drawLine(mTouchHighlightX - mNavSlop, 3245 mTouchHighlightY - mNavSlop, mTouchHighlightX 3246 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3247 + 1, mTouchCrossHairColor); 3248 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3249 mTouchHighlightY - mNavSlop, mTouchHighlightX 3250 - mNavSlop, 3251 mTouchHighlightY + mNavSlop + 1, 3252 mTouchCrossHairColor); 3253 } 3254 } 3255 } 3256 } 3257 3258 private void removeTouchHighlight(boolean removePendingMessage) { 3259 if (removePendingMessage) { 3260 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3261 } 3262 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3263 } 3264 3265 @Override 3266 public void setLayoutParams(ViewGroup.LayoutParams params) { 3267 if (params.height == LayoutParams.WRAP_CONTENT) { 3268 mWrapContent = true; 3269 } 3270 super.setLayoutParams(params); 3271 } 3272 3273 @Override 3274 public boolean performLongClick() { 3275 // performLongClick() is the result of a delayed message. If we switch 3276 // to windows overview, the WebView will be temporarily removed from the 3277 // view system. In that case, do nothing. 3278 if (getParent() == null) return false; 3279 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3280 // Send the click so that the textfield is in focus 3281 centerKeyPressOnTextField(); 3282 rebuildWebTextView(); 3283 } else { 3284 clearTextEntry(true); 3285 } 3286 if (inEditingMode()) { 3287 return mWebTextView.performLongClick(); 3288 } 3289 /* if long click brings up a context menu, the super function 3290 * returns true and we're done. Otherwise, nothing happened when 3291 * the user clicked. */ 3292 if (super.performLongClick()) { 3293 return true; 3294 } 3295 /* In the case where the application hasn't already handled the long 3296 * click action, look for a word under the click. If one is found, 3297 * animate the text selection into view. 3298 * FIXME: no animation code yet */ 3299 if (mSelectingText) return false; // long click does nothing on selection 3300 int x = viewToContentX((int) mLastTouchX + mScrollX); 3301 int y = viewToContentY((int) mLastTouchY + mScrollY); 3302 setUpSelect(); 3303 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3304 nativeSetExtendSelection(); 3305 getWebChromeClient().onSelectionStart(this); 3306 return true; 3307 } 3308 notifySelectDialogDismissed(); 3309 return false; 3310 } 3311 3312 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3313 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3314 Rect vBox = contentToViewRect(contentBounds); 3315 Rect visibleRect = new Rect(); 3316 calcOurVisibleRect(visibleRect); 3317 // If the textfield is on screen, place the WebTextView in 3318 // its new place, accounting for our new scroll/zoom values, 3319 // and adjust its textsize. 3320 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3321 : visibleRect.contains(vBox)) { 3322 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3323 vBox.height()); 3324 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3325 contentToViewDimension( 3326 nativeFocusCandidateTextSize())); 3327 return true; 3328 } else { 3329 // The textfield is now off screen. The user probably 3330 // was not zooming to see the textfield better. Remove 3331 // the WebTextView. If the user types a key, and the 3332 // textfield is still in focus, we will reconstruct 3333 // the WebTextView and scroll it back on screen. 3334 mWebTextView.remove(); 3335 return false; 3336 } 3337 } 3338 3339 private void onZoomAnimationStart() { 3340 // If it is in password mode, turn it off so it does not draw misplaced. 3341 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3342 mWebTextView.setInPassword(false); 3343 } 3344 } 3345 3346 private void onZoomAnimationEnd() { 3347 // adjust the edit text view if needed 3348 if (inEditingMode() && didUpdateTextViewBounds(false) && nativeFocusCandidateIsPassword()) { 3349 // If it is a password field, start drawing the WebTextView once 3350 // again. 3351 mWebTextView.setInPassword(true); 3352 } 3353 } 3354 3355 void onFixedLengthZoomAnimationStart() { 3356 WebViewCore.pauseUpdatePicture(getWebViewCore()); 3357 onZoomAnimationStart(); 3358 } 3359 3360 void onFixedLengthZoomAnimationEnd() { 3361 WebViewCore.resumeUpdatePicture(mWebViewCore); 3362 onZoomAnimationEnd(); 3363 } 3364 3365 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 3366 Paint.DITHER_FLAG | 3367 Paint.SUBPIXEL_TEXT_FLAG; 3368 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 3369 Paint.DITHER_FLAG; 3370 3371 private final DrawFilter mZoomFilter = 3372 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 3373 // If we need to trade better quality for speed, set mScrollFilter to null 3374 private final DrawFilter mScrollFilter = 3375 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 3376 3377 private void drawCoreAndCursorRing(Canvas canvas, int color, 3378 boolean drawCursorRing) { 3379 if (mDrawHistory) { 3380 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3381 canvas.drawPicture(mHistoryPicture); 3382 return; 3383 } 3384 if (mNativeClass == 0) return; 3385 3386 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 3387 boolean animateScroll = ((!mScroller.isFinished() 3388 || mVelocityTracker != null) 3389 && (mTouchMode != TOUCH_DRAG_MODE || 3390 mHeldMotionless != MOTIONLESS_TRUE)) 3391 || mDeferTouchMode == TOUCH_DRAG_MODE; 3392 if (mTouchMode == TOUCH_DRAG_MODE) { 3393 if (mHeldMotionless == MOTIONLESS_PENDING) { 3394 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3395 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3396 mHeldMotionless = MOTIONLESS_FALSE; 3397 } 3398 if (mHeldMotionless == MOTIONLESS_FALSE) { 3399 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3400 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3401 mHeldMotionless = MOTIONLESS_PENDING; 3402 } 3403 } 3404 if (animateZoom) { 3405 mZoomManager.animateZoom(canvas); 3406 } else { 3407 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3408 } 3409 3410 boolean UIAnimationsRunning = false; 3411 // Currently for each draw we compute the animation values; 3412 // We may in the future decide to do that independently. 3413 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3414 UIAnimationsRunning = true; 3415 // If we have unfinished (or unstarted) animations, 3416 // we ask for a repaint. 3417 invalidate(); 3418 } 3419 3420 // decide which adornments to draw 3421 int extras = DRAW_EXTRAS_NONE; 3422 if (DebugFlags.WEB_VIEW) { 3423 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 3424 + " mSelectingText=" + mSelectingText 3425 + " nativePageShouldHandleShiftAndArrows()=" 3426 + nativePageShouldHandleShiftAndArrows() 3427 + " animateZoom=" + animateZoom); 3428 } 3429 if (mFindIsUp) { 3430 extras = DRAW_EXTRAS_FIND; 3431 } else if (mSelectingText) { 3432 extras = DRAW_EXTRAS_SELECTION; 3433 nativeSetSelectionPointer(mDrawSelectionPointer, 3434 mZoomManager.getInvScale(), 3435 mSelectX, mSelectY - getTitleHeight()); 3436 } else if (drawCursorRing) { 3437 extras = DRAW_EXTRAS_CURSOR_RING; 3438 } 3439 DrawFilter df = null; 3440 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 3441 df = mZoomFilter; 3442 } else if (animateScroll) { 3443 df = mScrollFilter; 3444 } 3445 canvas.setDrawFilter(df); 3446 int content = nativeDraw(canvas, color, extras, true); 3447 canvas.setDrawFilter(null); 3448 if (content != 0) { 3449 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 3450 } 3451 3452 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3453 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3454 mTouchMode = TOUCH_SHORTPRESS_MODE; 3455 } 3456 } 3457 if (mFocusSizeChanged) { 3458 mFocusSizeChanged = false; 3459 // If we are zooming, this will get handled above, when the zoom 3460 // finishes. We also do not need to do this unless the WebTextView 3461 // is showing. 3462 if (!animateZoom && inEditingMode()) { 3463 didUpdateTextViewBounds(true); 3464 } 3465 } 3466 } 3467 3468 // draw history 3469 private boolean mDrawHistory = false; 3470 private Picture mHistoryPicture = null; 3471 private int mHistoryWidth = 0; 3472 private int mHistoryHeight = 0; 3473 3474 // Only check the flag, can be called from WebCore thread 3475 boolean drawHistory() { 3476 return mDrawHistory; 3477 } 3478 3479 int getHistoryPictureWidth() { 3480 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 3481 } 3482 3483 // Should only be called in UI thread 3484 void switchOutDrawHistory() { 3485 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3486 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 3487 mDrawHistory = false; 3488 mHistoryPicture = null; 3489 invalidate(); 3490 int oldScrollX = mScrollX; 3491 int oldScrollY = mScrollY; 3492 mScrollX = pinLocX(mScrollX); 3493 mScrollY = pinLocY(mScrollY); 3494 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3495 mUserScroll = false; 3496 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3497 oldScrollY); 3498 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3499 } else { 3500 sendOurVisibleRect(); 3501 } 3502 } 3503 } 3504 3505 WebViewCore.CursorData cursorData() { 3506 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3507 result.mMoveGeneration = nativeMoveGeneration(); 3508 result.mFrame = nativeCursorFramePointer(); 3509 Point position = nativeCursorPosition(); 3510 result.mX = position.x; 3511 result.mY = position.y; 3512 return result; 3513 } 3514 3515 /** 3516 * Delete text from start to end in the focused textfield. If there is no 3517 * focus, or if start == end, silently fail. If start and end are out of 3518 * order, swap them. 3519 * @param start Beginning of selection to delete. 3520 * @param end End of selection to delete. 3521 */ 3522 /* package */ void deleteSelection(int start, int end) { 3523 mTextGeneration++; 3524 WebViewCore.TextSelectionData data 3525 = new WebViewCore.TextSelectionData(start, end); 3526 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3527 data); 3528 } 3529 3530 /** 3531 * Set the selection to (start, end) in the focused textfield. If start and 3532 * end are out of order, swap them. 3533 * @param start Beginning of selection. 3534 * @param end End of selection. 3535 */ 3536 /* package */ void setSelection(int start, int end) { 3537 if (mWebViewCore != null) { 3538 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3539 } 3540 } 3541 3542 @Override 3543 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3544 InputConnection connection = super.onCreateInputConnection(outAttrs); 3545 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3546 return connection; 3547 } 3548 3549 /** 3550 * Called in response to a message from webkit telling us that the soft 3551 * keyboard should be launched. 3552 */ 3553 private void displaySoftKeyboard(boolean isTextView) { 3554 InputMethodManager imm = (InputMethodManager) 3555 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3556 3557 // bring it back to the default scale so that user can enter text 3558 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 3559 if (zoom) { 3560 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 3561 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 3562 } 3563 if (isTextView) { 3564 rebuildWebTextView(); 3565 if (inEditingMode()) { 3566 imm.showSoftInput(mWebTextView, 0); 3567 if (zoom) { 3568 didUpdateTextViewBounds(true); 3569 } 3570 return; 3571 } 3572 } 3573 // Used by plugins. 3574 // Also used if the navigation cache is out of date, and 3575 // does not recognize that a textfield is in focus. In that 3576 // case, use WebView as the targeted view. 3577 // see http://b/issue?id=2457459 3578 imm.showSoftInput(this, 0); 3579 } 3580 3581 // Called by WebKit to instruct the UI to hide the keyboard 3582 private void hideSoftKeyboard() { 3583 InputMethodManager imm = (InputMethodManager) 3584 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3585 3586 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3587 } 3588 3589 /* 3590 * This method checks the current focus and cursor and potentially rebuilds 3591 * mWebTextView to have the appropriate properties, such as password, 3592 * multiline, and what text it contains. It also removes it if necessary. 3593 */ 3594 /* package */ void rebuildWebTextView() { 3595 // If the WebView does not have focus, do nothing until it gains focus. 3596 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3597 return; 3598 } 3599 boolean alreadyThere = inEditingMode(); 3600 // inEditingMode can only return true if mWebTextView is non-null, 3601 // so we can safely call remove() if (alreadyThere) 3602 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3603 if (alreadyThere) { 3604 mWebTextView.remove(); 3605 } 3606 return; 3607 } 3608 // At this point, we know we have found an input field, so go ahead 3609 // and create the WebTextView if necessary. 3610 if (mWebTextView == null) { 3611 mWebTextView = new WebTextView(mContext, WebView.this); 3612 // Initialize our generation number. 3613 mTextGeneration = 0; 3614 } 3615 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3616 contentToViewDimension(nativeFocusCandidateTextSize())); 3617 Rect visibleRect = new Rect(); 3618 calcOurContentVisibleRect(visibleRect); 3619 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3620 // should be in content coordinates. 3621 Rect bounds = nativeFocusCandidateNodeBounds(); 3622 Rect vBox = contentToViewRect(bounds); 3623 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3624 if (!Rect.intersects(bounds, visibleRect)) { 3625 mWebTextView.bringIntoView(); 3626 } 3627 String text = nativeFocusCandidateText(); 3628 int nodePointer = nativeFocusCandidatePointer(); 3629 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3630 // It is possible that we have the same textfield, but it has moved, 3631 // i.e. In the case of opening/closing the screen. 3632 // In that case, we need to set the dimensions, but not the other 3633 // aspects. 3634 // If the text has been changed by webkit, update it. However, if 3635 // there has been more UI text input, ignore it. We will receive 3636 // another update when that text is recognized. 3637 if (text != null && !text.equals(mWebTextView.getText().toString()) 3638 && nativeTextGeneration() == mTextGeneration) { 3639 mWebTextView.setTextAndKeepSelection(text); 3640 } 3641 } else { 3642 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3643 Gravity.RIGHT : Gravity.NO_GRAVITY); 3644 // This needs to be called before setType, which may call 3645 // requestFormData, and it needs to have the correct nodePointer. 3646 mWebTextView.setNodePointer(nodePointer); 3647 mWebTextView.setType(nativeFocusCandidateType()); 3648 if (null == text) { 3649 if (DebugFlags.WEB_VIEW) { 3650 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3651 } 3652 text = ""; 3653 } 3654 mWebTextView.setTextAndKeepSelection(text); 3655 InputMethodManager imm = InputMethodManager.peekInstance(); 3656 if (imm != null && imm.isActive(mWebTextView)) { 3657 imm.restartInput(mWebTextView); 3658 } 3659 } 3660 mWebTextView.requestFocus(); 3661 } 3662 3663 /** 3664 * Called by WebTextView to find saved form data associated with the 3665 * textfield 3666 * @param name Name of the textfield. 3667 * @param nodePointer Pointer to the node of the textfield, so it can be 3668 * compared to the currently focused textfield when the data is 3669 * retrieved. 3670 */ 3671 /* package */ void requestFormData(String name, int nodePointer) { 3672 if (mWebViewCore.getSettings().getSaveFormData()) { 3673 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3674 update.arg1 = nodePointer; 3675 RequestFormData updater = new RequestFormData(name, getUrl(), 3676 update); 3677 Thread t = new Thread(updater); 3678 t.start(); 3679 } 3680 } 3681 3682 /** 3683 * Pass a message to find out the <label> associated with the <input> 3684 * identified by nodePointer 3685 * @param framePointer Pointer to the frame containing the <input> node 3686 * @param nodePointer Pointer to the node for which a <label> is desired. 3687 */ 3688 /* package */ void requestLabel(int framePointer, int nodePointer) { 3689 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 3690 nodePointer); 3691 } 3692 3693 /* 3694 * This class requests an Adapter for the WebTextView which shows past 3695 * entries stored in the database. It is a Runnable so that it can be done 3696 * in its own thread, without slowing down the UI. 3697 */ 3698 private class RequestFormData implements Runnable { 3699 private String mName; 3700 private String mUrl; 3701 private Message mUpdateMessage; 3702 3703 public RequestFormData(String name, String url, Message msg) { 3704 mName = name; 3705 mUrl = url; 3706 mUpdateMessage = msg; 3707 } 3708 3709 public void run() { 3710 ArrayList<String> pastEntries = mDatabase.getFormData(mUrl, mName); 3711 if (pastEntries.size() > 0) { 3712 AutoCompleteAdapter adapter = new 3713 AutoCompleteAdapter(mContext, pastEntries); 3714 mUpdateMessage.obj = adapter; 3715 mUpdateMessage.sendToTarget(); 3716 } 3717 } 3718 } 3719 3720 /** 3721 * Dump the display tree to "/sdcard/displayTree.txt" 3722 * 3723 * @hide debug only 3724 */ 3725 public void dumpDisplayTree() { 3726 nativeDumpDisplayTree(getUrl()); 3727 } 3728 3729 /** 3730 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 3731 * "/sdcard/domTree.txt" 3732 * 3733 * @hide debug only 3734 */ 3735 public void dumpDomTree(boolean toFile) { 3736 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 3737 } 3738 3739 /** 3740 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 3741 * to "/sdcard/renderTree.txt" 3742 * 3743 * @hide debug only 3744 */ 3745 public void dumpRenderTree(boolean toFile) { 3746 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 3747 } 3748 3749 /** 3750 * Dump the V8 counters to standard output. 3751 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 3752 * true. Otherwise, this will do nothing. 3753 * 3754 * @hide debug only 3755 */ 3756 public void dumpV8Counters() { 3757 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 3758 } 3759 3760 // This is used to determine long press with the center key. Does not 3761 // affect long press with the trackball/touch. 3762 private boolean mGotCenterDown = false; 3763 3764 @Override 3765 public boolean onKeyDown(int keyCode, KeyEvent event) { 3766 if (DebugFlags.WEB_VIEW) { 3767 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 3768 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3769 } 3770 3771 if (mNativeClass == 0) { 3772 return false; 3773 } 3774 3775 // do this hack up front, so it always works, regardless of touch-mode 3776 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 3777 mAutoRedraw = !mAutoRedraw; 3778 if (mAutoRedraw) { 3779 invalidate(); 3780 } 3781 return true; 3782 } 3783 3784 // Bubble up the key event if 3785 // 1. it is a system key; or 3786 // 2. the host application wants to handle it; 3787 // 3. the accessibility injector is present and wants to handle it; 3788 if (event.isSystem() 3789 || mCallbackProxy.uiOverrideKeyEvent(event) 3790 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 3791 return false; 3792 } 3793 3794 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3795 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3796 if (nativePageShouldHandleShiftAndArrows()) { 3797 mShiftIsPressed = true; 3798 } else if (!nativeCursorWantsKeyEvents() && !mSelectingText) { 3799 setUpSelect(); 3800 } 3801 } 3802 3803 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 3804 pageUp(false); 3805 return true; 3806 } 3807 3808 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 3809 pageDown(false); 3810 return true; 3811 } 3812 3813 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3814 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3815 switchOutDrawHistory(); 3816 if (nativePageShouldHandleShiftAndArrows()) { 3817 letPageHandleNavKey(keyCode, event.getEventTime(), true); 3818 return true; 3819 } 3820 if (mSelectingText) { 3821 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 3822 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 3823 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 3824 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 3825 int multiplier = event.getRepeatCount() + 1; 3826 moveSelection(xRate * multiplier, yRate * multiplier); 3827 return true; 3828 } 3829 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 3830 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 3831 return true; 3832 } 3833 // Bubble up the key event as WebView doesn't handle it 3834 return false; 3835 } 3836 3837 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3838 switchOutDrawHistory(); 3839 if (event.getRepeatCount() == 0) { 3840 if (mSelectingText) { 3841 return true; // discard press if copy in progress 3842 } 3843 mGotCenterDown = true; 3844 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3845 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 3846 // Already checked mNativeClass, so we do not need to check it 3847 // again. 3848 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 3849 return true; 3850 } 3851 // Bubble up the key event as WebView doesn't handle it 3852 return false; 3853 } 3854 3855 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 3856 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 3857 // turn off copy select if a shift-key combo is pressed 3858 selectionDone(); 3859 mShiftIsPressed = false; 3860 } 3861 3862 if (getSettings().getNavDump()) { 3863 switch (keyCode) { 3864 case KeyEvent.KEYCODE_4: 3865 dumpDisplayTree(); 3866 break; 3867 case KeyEvent.KEYCODE_5: 3868 case KeyEvent.KEYCODE_6: 3869 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 3870 break; 3871 case KeyEvent.KEYCODE_7: 3872 case KeyEvent.KEYCODE_8: 3873 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 3874 break; 3875 case KeyEvent.KEYCODE_9: 3876 nativeInstrumentReport(); 3877 return true; 3878 } 3879 } 3880 3881 if (nativeCursorIsTextInput()) { 3882 // This message will put the node in focus, for the DOM's notion 3883 // of focus, and make the focuscontroller active 3884 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 3885 nativeCursorNodePointer()); 3886 // This will bring up the WebTextView and put it in focus, for 3887 // our view system's notion of focus 3888 rebuildWebTextView(); 3889 // Now we need to pass the event to it 3890 if (inEditingMode()) { 3891 mWebTextView.setDefaultSelection(); 3892 return mWebTextView.dispatchKeyEvent(event); 3893 } 3894 } else if (nativeHasFocusNode()) { 3895 // In this case, the cursor is not on a text input, but the focus 3896 // might be. Check it, and if so, hand over to the WebTextView. 3897 rebuildWebTextView(); 3898 if (inEditingMode()) { 3899 mWebTextView.setDefaultSelection(); 3900 return mWebTextView.dispatchKeyEvent(event); 3901 } 3902 } 3903 3904 // TODO: should we pass all the keys to DOM or check the meta tag 3905 if (nativeCursorWantsKeyEvents() || true) { 3906 // pass the key to DOM 3907 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 3908 // return true as DOM handles the key 3909 return true; 3910 } 3911 3912 // Bubble up the key event as WebView doesn't handle it 3913 return false; 3914 } 3915 3916 @Override 3917 public boolean onKeyUp(int keyCode, KeyEvent event) { 3918 if (DebugFlags.WEB_VIEW) { 3919 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 3920 + ", " + event + ", unicode=" + event.getUnicodeChar()); 3921 } 3922 3923 if (mNativeClass == 0) { 3924 return false; 3925 } 3926 3927 // special CALL handling when cursor node's href is "tel:XXX" 3928 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 3929 String text = nativeCursorText(); 3930 if (!nativeCursorIsTextInput() && text != null 3931 && text.startsWith(SCHEME_TEL)) { 3932 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 3933 getContext().startActivity(intent); 3934 return true; 3935 } 3936 } 3937 3938 // Bubble up the key event if 3939 // 1. it is a system key; or 3940 // 2. the host application wants to handle it; 3941 // 3. the accessibility injector is present and wants to handle it; 3942 if (event.isSystem() 3943 || mCallbackProxy.uiOverrideKeyEvent(event) 3944 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 3945 return false; 3946 } 3947 3948 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 3949 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 3950 if (nativePageShouldHandleShiftAndArrows()) { 3951 mShiftIsPressed = false; 3952 } else if (copySelection()) { 3953 selectionDone(); 3954 return true; 3955 } 3956 } 3957 3958 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 3959 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 3960 if (nativePageShouldHandleShiftAndArrows()) { 3961 letPageHandleNavKey(keyCode, event.getEventTime(), false); 3962 return true; 3963 } 3964 // always handle the navigation keys in the UI thread 3965 // Bubble up the key event as WebView doesn't handle it 3966 return false; 3967 } 3968 3969 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 3970 // remove the long press message first 3971 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 3972 mGotCenterDown = false; 3973 3974 if (mSelectingText) { 3975 if (mExtendSelection) { 3976 copySelection(); 3977 selectionDone(); 3978 } else { 3979 mExtendSelection = true; 3980 nativeSetExtendSelection(); 3981 invalidate(); // draw the i-beam instead of the arrow 3982 } 3983 return true; // discard press if copy in progress 3984 } 3985 3986 // perform the single click 3987 Rect visibleRect = sendOurVisibleRect(); 3988 // Note that sendOurVisibleRect calls viewToContent, so the 3989 // coordinates should be in content coordinates. 3990 if (!nativeCursorIntersects(visibleRect)) { 3991 return false; 3992 } 3993 WebViewCore.CursorData data = cursorData(); 3994 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 3995 playSoundEffect(SoundEffectConstants.CLICK); 3996 if (nativeCursorIsTextInput()) { 3997 rebuildWebTextView(); 3998 centerKeyPressOnTextField(); 3999 if (inEditingMode()) { 4000 mWebTextView.setDefaultSelection(); 4001 } 4002 return true; 4003 } 4004 clearTextEntry(true); 4005 nativeSetFollowedLink(true); 4006 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4007 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4008 nativeCursorNodePointer()); 4009 } 4010 return true; 4011 } 4012 4013 // TODO: should we pass all the keys to DOM or check the meta tag 4014 if (nativeCursorWantsKeyEvents() || true) { 4015 // pass the key to DOM 4016 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4017 // return true as DOM handles the key 4018 return true; 4019 } 4020 4021 // Bubble up the key event as WebView doesn't handle it 4022 return false; 4023 } 4024 4025 /** 4026 * @hide pending API council approval. 4027 */ 4028 public void setUpSelect() { 4029 if (0 == mNativeClass) return; // client isn't initialized 4030 if (inFullScreenMode()) return; 4031 if (mSelectingText) return; 4032 mExtendSelection = false; 4033 mSelectingText = mDrawSelectionPointer = true; 4034 // don't let the picture change during text selection 4035 WebViewCore.pauseUpdatePicture(mWebViewCore); 4036 nativeResetSelection(); 4037 if (nativeHasCursorNode()) { 4038 Rect rect = nativeCursorNodeBounds(); 4039 mSelectX = contentToViewX(rect.left); 4040 mSelectY = contentToViewY(rect.top); 4041 } else if (mLastTouchY > getVisibleTitleHeight()) { 4042 mSelectX = mScrollX + (int) mLastTouchX; 4043 mSelectY = mScrollY + (int) mLastTouchY; 4044 } else { 4045 mSelectX = mScrollX + getViewWidth() / 2; 4046 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4047 } 4048 nativeHideCursor(); 4049 } 4050 4051 /** 4052 * Use this method to put the WebView into text selection mode. 4053 * Do not rely on this functionality; it will be deprecated in the future. 4054 */ 4055 public void emulateShiftHeld() { 4056 setUpSelect(); 4057 } 4058 4059 /** 4060 * @hide pending API council approval. 4061 */ 4062 public void selectAll() { 4063 if (0 == mNativeClass) return; // client isn't initialized 4064 if (inFullScreenMode()) return; 4065 if (!mSelectingText) setUpSelect(); 4066 nativeSelectAll(); 4067 mDrawSelectionPointer = false; 4068 mExtendSelection = true; 4069 invalidate(); 4070 } 4071 4072 /** 4073 * @hide pending API council approval. 4074 */ 4075 public boolean selectDialogIsUp() { 4076 return mSelectingText; 4077 } 4078 4079 /** 4080 * @hide pending API council approval. 4081 */ 4082 public void notifySelectDialogDismissed() { 4083 mSelectingText = false; 4084 WebViewCore.resumeUpdatePicture(mWebViewCore); 4085 } 4086 4087 /** 4088 * @hide pending API council approval. 4089 */ 4090 public void selectionDone() { 4091 if (mSelectingText) { 4092 getWebChromeClient().onSelectionDone(this); 4093 invalidate(); // redraw without selection 4094 notifySelectDialogDismissed(); 4095 } 4096 } 4097 4098 /** 4099 * @hide pending API council approval. 4100 */ 4101 public boolean copySelection() { 4102 boolean copiedSomething = false; 4103 String selection = getSelection(); 4104 if (selection != "") { 4105 if (DebugFlags.WEB_VIEW) { 4106 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4107 } 4108 Toast.makeText(mContext 4109 , com.android.internal.R.string.text_copied 4110 , Toast.LENGTH_SHORT).show(); 4111 copiedSomething = true; 4112 ClipboardManager cm = (ClipboardManager)getContext() 4113 .getSystemService(Context.CLIPBOARD_SERVICE); 4114 cm.setText(selection); 4115 } 4116 invalidate(); // remove selection region and pointer 4117 return copiedSomething; 4118 } 4119 4120 /** 4121 * @hide pending API council approval. 4122 */ 4123 public String getSelection() { 4124 if (mNativeClass == 0) return ""; 4125 return nativeGetSelection(); 4126 } 4127 4128 @Override 4129 protected void onAttachedToWindow() { 4130 super.onAttachedToWindow(); 4131 if (hasWindowFocus()) setActive(true); 4132 } 4133 4134 @Override 4135 protected void onDetachedFromWindow() { 4136 clearTextEntry(false); 4137 mZoomManager.dismissZoomPicker(); 4138 if (hasWindowFocus()) setActive(false); 4139 super.onDetachedFromWindow(); 4140 } 4141 4142 @Override 4143 protected void onVisibilityChanged(View changedView, int visibility) { 4144 super.onVisibilityChanged(changedView, visibility); 4145 // The zoomManager may be null if the webview is created from XML that 4146 // specifies the view's visibility param as not visible (see http://b/2794841) 4147 if (visibility != View.VISIBLE && mZoomManager != null) { 4148 mZoomManager.dismissZoomPicker(); 4149 } 4150 } 4151 4152 /** 4153 * @deprecated WebView no longer needs to implement 4154 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4155 */ 4156 @Deprecated 4157 public void onChildViewAdded(View parent, View child) {} 4158 4159 /** 4160 * @deprecated WebView no longer needs to implement 4161 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4162 */ 4163 @Deprecated 4164 public void onChildViewRemoved(View p, View child) {} 4165 4166 /** 4167 * @deprecated WebView should not have implemented 4168 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4169 * does nothing now. 4170 */ 4171 @Deprecated 4172 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4173 } 4174 4175 private void setActive(boolean active) { 4176 if (active) { 4177 if (hasFocus()) { 4178 // If our window regained focus, and we have focus, then begin 4179 // drawing the cursor ring 4180 mDrawCursorRing = true; 4181 if (mNativeClass != 0) { 4182 nativeRecordButtons(true, false, true); 4183 if (inEditingMode()) { 4184 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 1, 0); 4185 } 4186 } 4187 } else { 4188 // If our window gained focus, but we do not have it, do not 4189 // draw the cursor ring. 4190 mDrawCursorRing = false; 4191 // We do not call nativeRecordButtons here because we assume 4192 // that when we lost focus, or window focus, it got called with 4193 // false for the first parameter 4194 } 4195 } else { 4196 if (!mZoomManager.isZoomPickerVisible()) { 4197 /* 4198 * The external zoom controls come in their own window, so our 4199 * window loses focus. Our policy is to not draw the cursor ring 4200 * if our window is not focused, but this is an exception since 4201 * the user can still navigate the web page with the zoom 4202 * controls showing. 4203 */ 4204 mDrawCursorRing = false; 4205 } 4206 mGotKeyDown = false; 4207 mShiftIsPressed = false; 4208 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4209 mTouchMode = TOUCH_DONE_MODE; 4210 if (mNativeClass != 0) { 4211 nativeRecordButtons(false, false, true); 4212 } 4213 setFocusControllerInactive(); 4214 } 4215 invalidate(); 4216 } 4217 4218 // To avoid drawing the cursor ring, and remove the TextView when our window 4219 // loses focus. 4220 @Override 4221 public void onWindowFocusChanged(boolean hasWindowFocus) { 4222 setActive(hasWindowFocus); 4223 if (hasWindowFocus) { 4224 BrowserFrame.sJavaBridge.setActiveWebView(this); 4225 } else { 4226 BrowserFrame.sJavaBridge.removeActiveWebView(this); 4227 } 4228 super.onWindowFocusChanged(hasWindowFocus); 4229 } 4230 4231 /* 4232 * Pass a message to WebCore Thread, telling the WebCore::Page's 4233 * FocusController to be "inactive" so that it will 4234 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4235 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4236 */ 4237 /* package */ void setFocusControllerInactive() { 4238 // Do not need to also check whether mWebViewCore is null, because 4239 // mNativeClass is only set if mWebViewCore is non null 4240 if (mNativeClass == 0) return; 4241 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, 0, 0); 4242 } 4243 4244 @Override 4245 protected void onFocusChanged(boolean focused, int direction, 4246 Rect previouslyFocusedRect) { 4247 if (DebugFlags.WEB_VIEW) { 4248 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4249 } 4250 if (focused) { 4251 // When we regain focus, if we have window focus, resume drawing 4252 // the cursor ring 4253 if (hasWindowFocus()) { 4254 mDrawCursorRing = true; 4255 if (mNativeClass != 0) { 4256 nativeRecordButtons(true, false, true); 4257 } 4258 //} else { 4259 // The WebView has gained focus while we do not have 4260 // windowfocus. When our window lost focus, we should have 4261 // called nativeRecordButtons(false...) 4262 } 4263 } else { 4264 // When we lost focus, unless focus went to the TextView (which is 4265 // true if we are in editing mode), stop drawing the cursor ring. 4266 if (!inEditingMode()) { 4267 mDrawCursorRing = false; 4268 if (mNativeClass != 0) { 4269 nativeRecordButtons(false, false, true); 4270 } 4271 setFocusControllerInactive(); 4272 } 4273 mGotKeyDown = false; 4274 } 4275 4276 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4277 } 4278 4279 /** 4280 * @hide 4281 */ 4282 @Override 4283 protected boolean setFrame(int left, int top, int right, int bottom) { 4284 boolean changed = super.setFrame(left, top, right, bottom); 4285 if (!changed && mHeightCanMeasure) { 4286 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4287 // in WebViewCore after we get the first layout. We do call 4288 // requestLayout() when we get contentSizeChanged(). But the View 4289 // system won't call onSizeChanged if the dimension is not changed. 4290 // In this case, we need to call sendViewSizeZoom() explicitly to 4291 // notify the WebKit about the new dimensions. 4292 sendViewSizeZoom(false); 4293 } 4294 return changed; 4295 } 4296 4297 @Override 4298 protected void onSizeChanged(int w, int h, int ow, int oh) { 4299 super.onSizeChanged(w, h, ow, oh); 4300 4301 // adjust the max viewport width depending on the view dimensions. This 4302 // is to ensure the scaling is not going insane. So do not shrink it if 4303 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4304 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 4305 if (newMaxViewportWidth > sMaxViewportWidth) { 4306 sMaxViewportWidth = newMaxViewportWidth; 4307 } 4308 4309 mZoomManager.onSizeChanged(w, h, ow, oh); 4310 } 4311 4312 @Override 4313 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4314 super.onScrollChanged(l, t, oldl, oldt); 4315 sendOurVisibleRect(); 4316 // update WebKit if visible title bar height changed. The logic is same 4317 // as getVisibleTitleHeight. 4318 int titleHeight = getTitleHeight(); 4319 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4320 sendViewSizeZoom(false); 4321 } 4322 } 4323 4324 @Override 4325 public boolean dispatchKeyEvent(KeyEvent event) { 4326 boolean dispatch = true; 4327 4328 // Textfields, plugins, and contentEditable nodes need to receive the 4329 // shift up key even if another key was released while the shift key 4330 // was held down. 4331 if (!inEditingMode() && (mNativeClass == 0 4332 || !nativePageShouldHandleShiftAndArrows())) { 4333 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4334 mGotKeyDown = true; 4335 } else { 4336 if (!mGotKeyDown) { 4337 /* 4338 * We got a key up for which we were not the recipient of 4339 * the original key down. Don't give it to the view. 4340 */ 4341 dispatch = false; 4342 } 4343 mGotKeyDown = false; 4344 } 4345 } 4346 4347 if (dispatch) { 4348 return super.dispatchKeyEvent(event); 4349 } else { 4350 // We didn't dispatch, so let something else handle the key 4351 return false; 4352 } 4353 } 4354 4355 // Here are the snap align logic: 4356 // 1. If it starts nearly horizontally or vertically, snap align; 4357 // 2. If there is a dramitic direction change, let it go; 4358 // 3. If there is a same direction back and forth, lock it. 4359 4360 // adjustable parameters 4361 private int mMinLockSnapReverseDistance; 4362 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4363 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4364 4365 private static int sign(float x) { 4366 return x > 0 ? 1 : (x < 0 ? -1 : 0); 4367 } 4368 4369 // if the page can scroll <= this value, we won't allow the drag tracker 4370 // to have any effect. 4371 private static final int MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER = 4; 4372 4373 private class DragTrackerHandler { 4374 private final DragTracker mProxy; 4375 private final float mStartY, mStartX; 4376 private final float mMinDY, mMinDX; 4377 private final float mMaxDY, mMaxDX; 4378 private float mCurrStretchY, mCurrStretchX; 4379 private int mSX, mSY; 4380 private Interpolator mInterp; 4381 private float[] mXY = new float[2]; 4382 4383 // inner (non-state) classes can't have enums :( 4384 private static final int DRAGGING_STATE = 0; 4385 private static final int ANIMATING_STATE = 1; 4386 private static final int FINISHED_STATE = 2; 4387 private int mState; 4388 4389 public DragTrackerHandler(float x, float y, DragTracker proxy) { 4390 mProxy = proxy; 4391 4392 int docBottom = computeVerticalScrollRange() + getTitleHeight(); 4393 int viewTop = getScrollY(); 4394 int viewBottom = viewTop + getHeight(); 4395 4396 mStartY = y; 4397 mMinDY = -viewTop; 4398 mMaxDY = docBottom - viewBottom; 4399 4400 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4401 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " dragtracker y= " + y + 4402 " up/down= " + mMinDY + " " + mMaxDY); 4403 } 4404 4405 int docRight = computeHorizontalScrollRange(); 4406 int viewLeft = getScrollX(); 4407 int viewRight = viewLeft + getWidth(); 4408 mStartX = x; 4409 mMinDX = -viewLeft; 4410 mMaxDX = docRight - viewRight; 4411 4412 mState = DRAGGING_STATE; 4413 mProxy.onStartDrag(x, y); 4414 4415 // ensure we buildBitmap at least once 4416 mSX = -99999; 4417 } 4418 4419 private float computeStretch(float delta, float min, float max) { 4420 float stretch = 0; 4421 if (max - min > MIN_SCROLL_AMOUNT_TO_DISABLE_DRAG_TRACKER) { 4422 if (delta < min) { 4423 stretch = delta - min; 4424 } else if (delta > max) { 4425 stretch = delta - max; 4426 } 4427 } 4428 return stretch; 4429 } 4430 4431 public void dragTo(float x, float y) { 4432 float sy = computeStretch(mStartY - y, mMinDY, mMaxDY); 4433 float sx = computeStretch(mStartX - x, mMinDX, mMaxDX); 4434 4435 if ((mSnapScrollMode & SNAP_X) != 0) { 4436 sy = 0; 4437 } else if ((mSnapScrollMode & SNAP_Y) != 0) { 4438 sx = 0; 4439 } 4440 4441 if (mCurrStretchX != sx || mCurrStretchY != sy) { 4442 mCurrStretchX = sx; 4443 mCurrStretchY = sy; 4444 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4445 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "---- stretch " + sx + 4446 " " + sy); 4447 } 4448 if (mProxy.onStretchChange(sx, sy)) { 4449 invalidate(); 4450 } 4451 } 4452 } 4453 4454 public void stopDrag() { 4455 final int DURATION = 200; 4456 int now = (int)SystemClock.uptimeMillis(); 4457 mInterp = new Interpolator(2); 4458 mXY[0] = mCurrStretchX; 4459 mXY[1] = mCurrStretchY; 4460 // float[] blend = new float[] { 0.5f, 0, 0.75f, 1 }; 4461 float[] blend = new float[] { 0, 0.5f, 0.75f, 1 }; 4462 mInterp.setKeyFrame(0, now, mXY, blend); 4463 float[] zerozero = new float[] { 0, 0 }; 4464 mInterp.setKeyFrame(1, now + DURATION, zerozero, null); 4465 mState = ANIMATING_STATE; 4466 4467 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4468 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "----- stopDrag, starting animation"); 4469 } 4470 } 4471 4472 // Call this after each draw. If it ruturns null, the tracker is done 4473 public boolean isFinished() { 4474 return mState == FINISHED_STATE; 4475 } 4476 4477 private int hiddenHeightOfTitleBar() { 4478 return getTitleHeight() - getVisibleTitleHeight(); 4479 } 4480 4481 // need a way to know if 565 or 8888 is the right config for 4482 // capturing the display and giving it to the drag proxy 4483 private Bitmap.Config offscreenBitmapConfig() { 4484 // hard code 565 for now 4485 return Bitmap.Config.RGB_565; 4486 } 4487 4488 /* If the tracker draws, then this returns true, otherwise it will 4489 return false, and draw nothing. 4490 */ 4491 public boolean draw(Canvas canvas) { 4492 if (mCurrStretchX != 0 || mCurrStretchY != 0) { 4493 int sx = getScrollX(); 4494 int sy = getScrollY() - hiddenHeightOfTitleBar(); 4495 if (mSX != sx || mSY != sy) { 4496 buildBitmap(sx, sy); 4497 mSX = sx; 4498 mSY = sy; 4499 } 4500 4501 if (mState == ANIMATING_STATE) { 4502 Interpolator.Result result = mInterp.timeToValues(mXY); 4503 if (result == Interpolator.Result.FREEZE_END) { 4504 mState = FINISHED_STATE; 4505 return false; 4506 } else { 4507 mProxy.onStretchChange(mXY[0], mXY[1]); 4508 invalidate(); 4509 // fall through to the draw 4510 } 4511 } 4512 int count = canvas.save(Canvas.MATRIX_SAVE_FLAG); 4513 canvas.translate(sx, sy); 4514 mProxy.onDraw(canvas); 4515 canvas.restoreToCount(count); 4516 return true; 4517 } 4518 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4519 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, " -- draw false " + 4520 mCurrStretchX + " " + mCurrStretchY); 4521 } 4522 return false; 4523 } 4524 4525 private void buildBitmap(int sx, int sy) { 4526 int w = getWidth(); 4527 int h = getViewHeight(); 4528 Bitmap bm = Bitmap.createBitmap(w, h, offscreenBitmapConfig()); 4529 Canvas canvas = new Canvas(bm); 4530 canvas.translate(-sx, -sy); 4531 drawContent(canvas); 4532 4533 if (DebugFlags.DRAG_TRACKER || DEBUG_DRAG_TRACKER) { 4534 Log.d(DebugFlags.DRAG_TRACKER_LOGTAG, "--- buildBitmap " + sx + 4535 " " + sy + " " + w + " " + h); 4536 } 4537 mProxy.onBitmapChange(bm); 4538 } 4539 } 4540 4541 /** @hide */ 4542 public static class DragTracker { 4543 public void onStartDrag(float x, float y) {} 4544 public boolean onStretchChange(float sx, float sy) { 4545 // return true to have us inval the view 4546 return false; 4547 } 4548 public void onStopDrag() {} 4549 public void onBitmapChange(Bitmap bm) {} 4550 public void onDraw(Canvas canvas) {} 4551 } 4552 4553 /** @hide */ 4554 public DragTracker getDragTracker() { 4555 return mDragTracker; 4556 } 4557 4558 /** @hide */ 4559 public void setDragTracker(DragTracker tracker) { 4560 mDragTracker = tracker; 4561 } 4562 4563 private DragTracker mDragTracker; 4564 private DragTrackerHandler mDragTrackerHandler; 4565 4566 private boolean hitFocusedPlugin(int contentX, int contentY) { 4567 if (DebugFlags.WEB_VIEW) { 4568 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4569 Rect r = nativeFocusNodeBounds(); 4570 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4571 + ", " + r.right + ", " + r.bottom + ")"); 4572 } 4573 return nativeFocusIsPlugin() 4574 && nativeFocusNodeBounds().contains(contentX, contentY); 4575 } 4576 4577 private boolean shouldForwardTouchEvent() { 4578 return mFullScreenHolder != null || (mForwardTouchEvents 4579 && !mSelectingText 4580 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4581 } 4582 4583 private boolean inFullScreenMode() { 4584 return mFullScreenHolder != null; 4585 } 4586 4587 void onPinchToZoomAnimationStart() { 4588 // cancel the single touch handling 4589 cancelTouch(); 4590 onZoomAnimationStart(); 4591 } 4592 4593 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 4594 onZoomAnimationEnd(); 4595 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 4596 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 4597 // as it may trigger the unwanted fling. 4598 mTouchMode = TOUCH_PINCH_DRAG; 4599 mConfirmMove = true; 4600 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 4601 } 4602 4603 private void startScrollingLayer(float gestureX, float gestureY) { 4604 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 4605 int contentX = viewToContentX((int) gestureX + mScrollX); 4606 int contentY = viewToContentY((int) gestureY + mScrollY); 4607 mScrollingLayer = nativeScrollableLayer(contentX, contentY); 4608 if (mScrollingLayer != 0) { 4609 mTouchMode = TOUCH_DRAG_LAYER_MODE; 4610 } 4611 } 4612 } 4613 4614 // 1/(density * density) used to compute the distance between points. 4615 // Computed in init(). 4616 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 4617 4618 // The distance between two points reported in onTouchEvent scaled by the 4619 // density of the screen. 4620 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 4621 4622 @Override 4623 public boolean onTouchEvent(MotionEvent ev) { 4624 if (mNativeClass == 0 || !isClickable() || !isLongClickable()) { 4625 return false; 4626 } 4627 4628 if (DebugFlags.WEB_VIEW) { 4629 Log.v(LOGTAG, ev + " at " + ev.getEventTime() + " mTouchMode=" 4630 + mTouchMode); 4631 } 4632 4633 int action = ev.getAction(); 4634 float x = ev.getX(); 4635 float y = ev.getY(); 4636 long eventTime = ev.getEventTime(); 4637 4638 final ScaleGestureDetector detector = 4639 mZoomManager.getMultiTouchGestureDetector(); 4640 boolean skipScaleGesture = false; 4641 // Set to the mid-point of a two-finger gesture used to detect if the 4642 // user has touched a layer. 4643 float gestureX = x; 4644 float gestureY = y; 4645 if (detector == null || !detector.isInProgress()) { 4646 // The gesture for scrolling a layer is two fingers close together. 4647 // FIXME: we may consider giving WebKit an option to handle 4648 // multi-touch events later. 4649 if (ev.getPointerCount() > 1) { 4650 float dx = ev.getX(1) - ev.getX(0); 4651 float dy = ev.getY(1) - ev.getY(0); 4652 float dist = (dx * dx + dy * dy) * 4653 DRAG_LAYER_INVERSE_DENSITY_SQUARED; 4654 // Use the approximate center to determine if the gesture is in 4655 // a layer. 4656 gestureX = ev.getX(0) + (dx * .5f); 4657 gestureY = ev.getY(0) + (dy * .5f); 4658 // Now use a consistent point for tracking movement. 4659 if (ev.getX(0) < ev.getX(1)) { 4660 x = ev.getX(0); 4661 y = ev.getY(0); 4662 } else { 4663 x = ev.getX(1); 4664 y = ev.getY(1); 4665 } 4666 action = ev.getActionMasked(); 4667 if (dist < DRAG_LAYER_FINGER_DISTANCE) { 4668 skipScaleGesture = true; 4669 } else if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 4670 // Fingers moved too far apart while dragging, the user 4671 // might be trying to zoom. 4672 mTouchMode = TOUCH_INIT_MODE; 4673 } 4674 } 4675 } 4676 4677 // FIXME: we may consider to give WebKit an option to handle multi-touch 4678 // events later. 4679 if (mZoomManager.supportsMultiTouchZoom() && ev.getPointerCount() > 1 && 4680 mTouchMode != TOUCH_DRAG_LAYER_MODE && !skipScaleGesture) { 4681 4682 // if the page disallows zoom, skip multi-pointer action 4683 if (mZoomManager.isZoomScaleFixed()) { 4684 return true; 4685 } 4686 4687 if (!detector.isInProgress() && 4688 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 4689 // Insert a fake pointer down event in order to start 4690 // the zoom scale detector. 4691 MotionEvent temp = MotionEvent.obtain(ev); 4692 // Clear the original event and set it to 4693 // ACTION_POINTER_DOWN. 4694 temp.setAction(temp.getAction() & 4695 ~MotionEvent.ACTION_MASK | 4696 MotionEvent.ACTION_POINTER_DOWN); 4697 detector.onTouchEvent(temp); 4698 } 4699 4700 detector.onTouchEvent(ev); 4701 4702 if (detector.isInProgress()) { 4703 mLastTouchTime = eventTime; 4704 return true; 4705 } 4706 4707 x = detector.getFocusX(); 4708 y = detector.getFocusY(); 4709 action = ev.getAction() & MotionEvent.ACTION_MASK; 4710 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4711 cancelTouch(); 4712 action = MotionEvent.ACTION_DOWN; 4713 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4714 // set mLastTouchX/Y to the remaining point 4715 mLastTouchX = x; 4716 mLastTouchY = y; 4717 } else if (action == MotionEvent.ACTION_MOVE) { 4718 // negative x or y indicate it is on the edge, skip it. 4719 if (x < 0 || y < 0) { 4720 return true; 4721 } 4722 } 4723 } 4724 4725 // Due to the touch screen edge effect, a touch closer to the edge 4726 // always snapped to the edge. As getViewWidth() can be different from 4727 // getWidth() due to the scrollbar, adjusting the point to match 4728 // getViewWidth(). Same applied to the height. 4729 x = Math.min(x, getViewWidth() - 1); 4730 y = Math.min(y, getViewHeightWithTitle() - 1); 4731 4732 float fDeltaX = mLastTouchX - x; 4733 float fDeltaY = mLastTouchY - y; 4734 int deltaX = (int) fDeltaX; 4735 int deltaY = (int) fDeltaY; 4736 int contentX = viewToContentX((int) x + mScrollX); 4737 int contentY = viewToContentY((int) y + mScrollY); 4738 4739 switch (action) { 4740 case MotionEvent.ACTION_DOWN: { 4741 mPreventDefault = PREVENT_DEFAULT_NO; 4742 mConfirmMove = false; 4743 if (!mScroller.isFinished()) { 4744 // stop the current scroll animation, but if this is 4745 // the start of a fling, allow it to add to the current 4746 // fling's velocity 4747 mScroller.abortAnimation(); 4748 mTouchMode = TOUCH_DRAG_START_MODE; 4749 mConfirmMove = true; 4750 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4751 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4752 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4753 if (getSettings().supportTouchOnly()) { 4754 removeTouchHighlight(true); 4755 } 4756 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4757 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4758 } else { 4759 // commit the short press action for the previous tap 4760 doShortPress(); 4761 mTouchMode = TOUCH_INIT_MODE; 4762 mDeferTouchProcess = (!inFullScreenMode() 4763 && mForwardTouchEvents) ? hitFocusedPlugin( 4764 contentX, contentY) : false; 4765 } 4766 } else { // the normal case 4767 mTouchMode = TOUCH_INIT_MODE; 4768 mDeferTouchProcess = (!inFullScreenMode() 4769 && mForwardTouchEvents) ? hitFocusedPlugin( 4770 contentX, contentY) : false; 4771 mWebViewCore.sendMessage( 4772 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4773 if (getSettings().supportTouchOnly()) { 4774 TouchHighlightData data = new TouchHighlightData(); 4775 data.mX = contentX; 4776 data.mY = contentY; 4777 data.mSlop = viewToContentDimension(mNavSlop); 4778 mWebViewCore.sendMessageDelayed( 4779 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 4780 ViewConfiguration.getTapTimeout()); 4781 if (DEBUG_TOUCH_HIGHLIGHT) { 4782 if (getSettings().getNavDump()) { 4783 mTouchHighlightX = (int) x + mScrollX; 4784 mTouchHighlightY = (int) y + mScrollY; 4785 mPrivateHandler.postDelayed(new Runnable() { 4786 public void run() { 4787 mTouchHighlightX = mTouchHighlightY = 0; 4788 invalidate(); 4789 } 4790 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 4791 } 4792 } 4793 } 4794 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4795 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4796 (eventTime - mLastTouchUpTime), eventTime); 4797 } 4798 if (mSelectingText) { 4799 mDrawSelectionPointer = false; 4800 mSelectionStarted = nativeStartSelection(contentX, contentY); 4801 if (DebugFlags.WEB_VIEW) { 4802 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 4803 } 4804 invalidate(); 4805 } 4806 } 4807 // Trigger the link 4808 if (mTouchMode == TOUCH_INIT_MODE 4809 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4810 mPrivateHandler.sendEmptyMessageDelayed( 4811 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 4812 mPrivateHandler.sendEmptyMessageDelayed( 4813 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 4814 if (inFullScreenMode() || mDeferTouchProcess) { 4815 mPreventDefault = PREVENT_DEFAULT_YES; 4816 } else if (mForwardTouchEvents) { 4817 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 4818 } else { 4819 mPreventDefault = PREVENT_DEFAULT_NO; 4820 } 4821 // pass the touch events from UI thread to WebCore thread 4822 if (shouldForwardTouchEvent()) { 4823 TouchEventData ted = new TouchEventData(); 4824 ted.mAction = action; 4825 ted.mX = contentX; 4826 ted.mY = contentY; 4827 ted.mMetaState = ev.getMetaState(); 4828 ted.mReprocess = mDeferTouchProcess; 4829 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4830 if (mDeferTouchProcess) { 4831 // still needs to set them for compute deltaX/Y 4832 mLastTouchX = x; 4833 mLastTouchY = y; 4834 break; 4835 } 4836 if (!inFullScreenMode()) { 4837 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 4838 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4839 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4840 action, 0), TAP_TIMEOUT); 4841 } 4842 } 4843 } 4844 startTouch(x, y, eventTime); 4845 break; 4846 } 4847 case MotionEvent.ACTION_MOVE: { 4848 boolean firstMove = false; 4849 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 4850 >= mTouchSlopSquare) { 4851 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 4852 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4853 mConfirmMove = true; 4854 firstMove = true; 4855 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 4856 mTouchMode = TOUCH_INIT_MODE; 4857 } 4858 if (getSettings().supportTouchOnly()) { 4859 removeTouchHighlight(true); 4860 } 4861 } 4862 // pass the touch events from UI thread to WebCore thread 4863 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 4864 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 4865 TouchEventData ted = new TouchEventData(); 4866 ted.mAction = action; 4867 ted.mX = contentX; 4868 ted.mY = contentY; 4869 ted.mMetaState = ev.getMetaState(); 4870 ted.mReprocess = mDeferTouchProcess; 4871 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 4872 mLastSentTouchTime = eventTime; 4873 if (mDeferTouchProcess) { 4874 break; 4875 } 4876 if (firstMove && !inFullScreenMode()) { 4877 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4878 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 4879 action, 0), TAP_TIMEOUT); 4880 } 4881 } 4882 if (mTouchMode == TOUCH_DONE_MODE 4883 || mPreventDefault == PREVENT_DEFAULT_YES) { 4884 // no dragging during scroll zoom animation, or when prevent 4885 // default is yes 4886 break; 4887 } 4888 if (mVelocityTracker == null) { 4889 Log.e(LOGTAG, "Got null mVelocityTracker when " 4890 + "mPreventDefault = " + mPreventDefault 4891 + " mDeferTouchProcess = " + mDeferTouchProcess 4892 + " mTouchMode = " + mTouchMode); 4893 } 4894 mVelocityTracker.addMovement(ev); 4895 if (mSelectingText && mSelectionStarted) { 4896 if (DebugFlags.WEB_VIEW) { 4897 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 4898 } 4899 nativeExtendSelection(contentX, contentY); 4900 invalidate(); 4901 break; 4902 } 4903 4904 if (mTouchMode != TOUCH_DRAG_MODE && 4905 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 4906 4907 if (!mConfirmMove) { 4908 break; 4909 } 4910 4911 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 4912 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 4913 // track mLastTouchTime as we may need to do fling at 4914 // ACTION_UP 4915 mLastTouchTime = eventTime; 4916 break; 4917 } 4918 // if it starts nearly horizontal or vertical, enforce it 4919 int ax = Math.abs(deltaX); 4920 int ay = Math.abs(deltaY); 4921 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 4922 mSnapScrollMode = SNAP_X; 4923 mSnapPositive = deltaX > 0; 4924 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 4925 mSnapScrollMode = SNAP_Y; 4926 mSnapPositive = deltaY > 0; 4927 } 4928 4929 mTouchMode = TOUCH_DRAG_MODE; 4930 mLastTouchX = x; 4931 mLastTouchY = y; 4932 fDeltaX = 0.0f; 4933 fDeltaY = 0.0f; 4934 deltaX = 0; 4935 deltaY = 0; 4936 4937 if (skipScaleGesture) { 4938 startScrollingLayer(gestureX, gestureY); 4939 } 4940 startDrag(); 4941 } 4942 4943 if (mDragTrackerHandler != null) { 4944 mDragTrackerHandler.dragTo(x, y); 4945 } 4946 4947 // do pan 4948 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 4949 int newScrollX = pinLocX(mScrollX + deltaX); 4950 int newDeltaX = newScrollX - mScrollX; 4951 if (deltaX != newDeltaX) { 4952 deltaX = newDeltaX; 4953 fDeltaX = (float) newDeltaX; 4954 } 4955 int newScrollY = pinLocY(mScrollY + deltaY); 4956 int newDeltaY = newScrollY - mScrollY; 4957 if (deltaY != newDeltaY) { 4958 deltaY = newDeltaY; 4959 fDeltaY = (float) newDeltaY; 4960 } 4961 } 4962 boolean done = false; 4963 boolean keepScrollBarsVisible = false; 4964 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 4965 mLastTouchX = x; 4966 mLastTouchY = y; 4967 keepScrollBarsVisible = done = true; 4968 } else { 4969 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 4970 int ax = Math.abs(deltaX); 4971 int ay = Math.abs(deltaY); 4972 if (mSnapScrollMode == SNAP_X) { 4973 // radical change means getting out of snap mode 4974 if (ay > MAX_SLOPE_FOR_DIAG * ax 4975 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4976 mSnapScrollMode = SNAP_NONE; 4977 } 4978 // reverse direction means lock in the snap mode 4979 if (ax > MAX_SLOPE_FOR_DIAG * ay && 4980 (mSnapPositive 4981 ? deltaX < -mMinLockSnapReverseDistance 4982 : deltaX > mMinLockSnapReverseDistance)) { 4983 mSnapScrollMode |= SNAP_LOCK; 4984 } 4985 } else { 4986 // radical change means getting out of snap mode 4987 if (ax > MAX_SLOPE_FOR_DIAG * ay 4988 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 4989 mSnapScrollMode = SNAP_NONE; 4990 } 4991 // reverse direction means lock in the snap mode 4992 if (ay > MAX_SLOPE_FOR_DIAG * ax && 4993 (mSnapPositive 4994 ? deltaY < -mMinLockSnapReverseDistance 4995 : deltaY > mMinLockSnapReverseDistance)) { 4996 mSnapScrollMode |= SNAP_LOCK; 4997 } 4998 } 4999 } 5000 if (mSnapScrollMode != SNAP_NONE) { 5001 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5002 deltaY = 0; 5003 } else { 5004 deltaX = 0; 5005 } 5006 } 5007 if ((deltaX | deltaY) != 0) { 5008 if (deltaX != 0) { 5009 mLastTouchX = x; 5010 } 5011 if (deltaY != 0) { 5012 mLastTouchY = y; 5013 } 5014 mHeldMotionless = MOTIONLESS_FALSE; 5015 } else { 5016 // keep the scrollbar on the screen even there is no 5017 // scroll 5018 mLastTouchX = x; 5019 mLastTouchY = y; 5020 keepScrollBarsVisible = true; 5021 } 5022 mLastTouchTime = eventTime; 5023 mUserScroll = true; 5024 } 5025 5026 doDrag(deltaX, deltaY); 5027 5028 // Turn off scrollbars when dragging a layer. 5029 if (keepScrollBarsVisible && 5030 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5031 if (mHeldMotionless != MOTIONLESS_TRUE) { 5032 mHeldMotionless = MOTIONLESS_TRUE; 5033 invalidate(); 5034 } 5035 // keep the scrollbar on the screen even there is no scroll 5036 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5037 false); 5038 // return false to indicate that we can't pan out of the 5039 // view space 5040 return !done; 5041 } 5042 break; 5043 } 5044 case MotionEvent.ACTION_UP: { 5045 if (!isFocused()) requestFocus(); 5046 // pass the touch events from UI thread to WebCore thread 5047 if (shouldForwardTouchEvent()) { 5048 TouchEventData ted = new TouchEventData(); 5049 ted.mAction = action; 5050 ted.mX = contentX; 5051 ted.mY = contentY; 5052 ted.mMetaState = ev.getMetaState(); 5053 ted.mReprocess = mDeferTouchProcess; 5054 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5055 } 5056 mLastTouchUpTime = eventTime; 5057 switch (mTouchMode) { 5058 case TOUCH_DOUBLE_TAP_MODE: // double tap 5059 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5060 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5061 if (inFullScreenMode() || mDeferTouchProcess) { 5062 TouchEventData ted = new TouchEventData(); 5063 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5064 ted.mX = contentX; 5065 ted.mY = contentY; 5066 ted.mMetaState = ev.getMetaState(); 5067 ted.mReprocess = mDeferTouchProcess; 5068 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5069 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5070 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5071 mTouchMode = TOUCH_DONE_MODE; 5072 } 5073 break; 5074 case TOUCH_INIT_MODE: // tap 5075 case TOUCH_SHORTPRESS_START_MODE: 5076 case TOUCH_SHORTPRESS_MODE: 5077 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5078 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5079 if (mConfirmMove) { 5080 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5081 " WebCore's response for touch down."); 5082 if (mPreventDefault != PREVENT_DEFAULT_YES 5083 && (computeMaxScrollX() > 0 5084 || computeMaxScrollY() > 0)) { 5085 // If the user has performed a very quick touch 5086 // sequence it is possible that we may get here 5087 // before WebCore has had a chance to process the events. 5088 // In this case, any call to preventDefault in the 5089 // JS touch handler will not have been executed yet. 5090 // Hence we will see both the UI (now) and WebCore 5091 // (when context switches) handling the event, 5092 // regardless of whether the web developer actually 5093 // doeses preventDefault in their touch handler. This 5094 // is the nature of our asynchronous touch model. 5095 5096 // we will not rewrite drag code here, but we 5097 // will try fling if it applies. 5098 WebViewCore.reducePriority(); 5099 // to get better performance, pause updating the 5100 // picture 5101 WebViewCore.pauseUpdatePicture(mWebViewCore); 5102 // fall through to TOUCH_DRAG_MODE 5103 } else { 5104 // WebKit may consume the touch event and modify 5105 // DOM. drawContentPicture() will be called with 5106 // animateSroll as true for better performance. 5107 // Force redraw in high-quality. 5108 invalidate(); 5109 break; 5110 } 5111 } else { 5112 if (mSelectingText) { 5113 // tapping on selection or controls does nothing 5114 if (!nativeHitSelection(contentX, contentY)) { 5115 selectionDone(); 5116 } 5117 break; 5118 } 5119 // only trigger double tap if the WebView is 5120 // scalable 5121 if (mTouchMode == TOUCH_INIT_MODE 5122 && (canZoomIn() || canZoomOut())) { 5123 mPrivateHandler.sendEmptyMessageDelayed( 5124 RELEASE_SINGLE_TAP, ViewConfiguration 5125 .getDoubleTapTimeout()); 5126 } else { 5127 doShortPress(); 5128 } 5129 break; 5130 } 5131 case TOUCH_DRAG_MODE: 5132 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5133 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5134 // if the user waits a while w/o moving before the 5135 // up, we don't want to do a fling 5136 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5137 if (mVelocityTracker == null) { 5138 Log.e(LOGTAG, "Got null mVelocityTracker when " 5139 + "mPreventDefault = " 5140 + mPreventDefault 5141 + " mDeferTouchProcess = " 5142 + mDeferTouchProcess); 5143 } 5144 mVelocityTracker.addMovement(ev); 5145 // set to MOTIONLESS_IGNORE so that it won't keep 5146 // removing and sending message in 5147 // drawCoreAndCursorRing() 5148 mHeldMotionless = MOTIONLESS_IGNORE; 5149 doFling(); 5150 break; 5151 } 5152 // redraw in high-quality, as we're done dragging 5153 mHeldMotionless = MOTIONLESS_TRUE; 5154 invalidate(); 5155 // fall through 5156 case TOUCH_DRAG_START_MODE: 5157 case TOUCH_DRAG_LAYER_MODE: 5158 // TOUCH_DRAG_START_MODE should not happen for the real 5159 // device as we almost certain will get a MOVE. But this 5160 // is possible on emulator. 5161 mLastVelocity = 0; 5162 WebViewCore.resumePriority(); 5163 WebViewCore.resumeUpdatePicture(mWebViewCore); 5164 break; 5165 } 5166 stopTouch(); 5167 break; 5168 } 5169 case MotionEvent.ACTION_CANCEL: { 5170 if (mTouchMode == TOUCH_DRAG_MODE) { 5171 invalidate(); 5172 } 5173 cancelWebCoreTouchEvent(contentX, contentY, false); 5174 cancelTouch(); 5175 break; 5176 } 5177 } 5178 return true; 5179 } 5180 5181 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5182 if (shouldForwardTouchEvent()) { 5183 if (removeEvents) { 5184 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5185 } 5186 TouchEventData ted = new TouchEventData(); 5187 ted.mX = x; 5188 ted.mY = y; 5189 ted.mAction = MotionEvent.ACTION_CANCEL; 5190 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5191 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5192 } 5193 } 5194 5195 private void startTouch(float x, float y, long eventTime) { 5196 // Remember where the motion event started 5197 mLastTouchX = x; 5198 mLastTouchY = y; 5199 mLastTouchTime = eventTime; 5200 mVelocityTracker = VelocityTracker.obtain(); 5201 mSnapScrollMode = SNAP_NONE; 5202 if (mDragTracker != null) { 5203 mDragTrackerHandler = new DragTrackerHandler(x, y, mDragTracker); 5204 } 5205 } 5206 5207 private void startDrag() { 5208 WebViewCore.reducePriority(); 5209 // to get better performance, pause updating the picture 5210 WebViewCore.pauseUpdatePicture(mWebViewCore); 5211 if (!mDragFromTextInput) { 5212 nativeHideCursor(); 5213 } 5214 5215 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5216 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 5217 mZoomManager.invokeZoomPicker(); 5218 } 5219 } 5220 5221 private void doDrag(int deltaX, int deltaY) { 5222 if ((deltaX | deltaY) != 0) { 5223 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 5224 deltaX = viewToContentDimension(deltaX); 5225 deltaY = viewToContentDimension(deltaY); 5226 if (nativeScrollLayer(mScrollingLayer, deltaX, deltaY)) { 5227 invalidate(); 5228 } 5229 return; 5230 } 5231 scrollBy(deltaX, deltaY); 5232 } 5233 mZoomManager.keepZoomPickerVisible(); 5234 } 5235 5236 private void stopTouch() { 5237 if (mDragTrackerHandler != null) { 5238 mDragTrackerHandler.stopDrag(); 5239 } 5240 // we also use mVelocityTracker == null to tell us that we are 5241 // not "moving around", so we can take the slower/prettier 5242 // mode in the drawing code 5243 if (mVelocityTracker != null) { 5244 mVelocityTracker.recycle(); 5245 mVelocityTracker = null; 5246 } 5247 } 5248 5249 private void cancelTouch() { 5250 if (mDragTrackerHandler != null) { 5251 mDragTrackerHandler.stopDrag(); 5252 } 5253 // we also use mVelocityTracker == null to tell us that we are 5254 // not "moving around", so we can take the slower/prettier 5255 // mode in the drawing code 5256 if (mVelocityTracker != null) { 5257 mVelocityTracker.recycle(); 5258 mVelocityTracker = null; 5259 } 5260 if (mTouchMode == TOUCH_DRAG_MODE || 5261 mTouchMode == TOUCH_DRAG_LAYER_MODE) { 5262 WebViewCore.resumePriority(); 5263 WebViewCore.resumeUpdatePicture(mWebViewCore); 5264 } 5265 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5266 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5267 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5268 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5269 if (getSettings().supportTouchOnly()) { 5270 removeTouchHighlight(true); 5271 } 5272 mHeldMotionless = MOTIONLESS_TRUE; 5273 mTouchMode = TOUCH_DONE_MODE; 5274 nativeHideCursor(); 5275 } 5276 5277 private long mTrackballFirstTime = 0; 5278 private long mTrackballLastTime = 0; 5279 private float mTrackballRemainsX = 0.0f; 5280 private float mTrackballRemainsY = 0.0f; 5281 private int mTrackballXMove = 0; 5282 private int mTrackballYMove = 0; 5283 private boolean mSelectingText = false; 5284 private boolean mSelectionStarted = false; 5285 private boolean mExtendSelection = false; 5286 private boolean mDrawSelectionPointer = false; 5287 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5288 private static final int TRACKBALL_TIMEOUT = 200; 5289 private static final int TRACKBALL_WAIT = 100; 5290 private static final int TRACKBALL_SCALE = 400; 5291 private static final int TRACKBALL_SCROLL_COUNT = 5; 5292 private static final int TRACKBALL_MOVE_COUNT = 10; 5293 private static final int TRACKBALL_MULTIPLIER = 3; 5294 private static final int SELECT_CURSOR_OFFSET = 16; 5295 private int mSelectX = 0; 5296 private int mSelectY = 0; 5297 private boolean mFocusSizeChanged = false; 5298 private boolean mShiftIsPressed = false; 5299 private boolean mTrackballDown = false; 5300 private long mTrackballUpTime = 0; 5301 private long mLastCursorTime = 0; 5302 private Rect mLastCursorBounds; 5303 5304 // Set by default; BrowserActivity clears to interpret trackball data 5305 // directly for movement. Currently, the framework only passes 5306 // arrow key events, not trackball events, from one child to the next 5307 private boolean mMapTrackballToArrowKeys = true; 5308 5309 public void setMapTrackballToArrowKeys(boolean setMap) { 5310 mMapTrackballToArrowKeys = setMap; 5311 } 5312 5313 void resetTrackballTime() { 5314 mTrackballLastTime = 0; 5315 } 5316 5317 @Override 5318 public boolean onTrackballEvent(MotionEvent ev) { 5319 long time = ev.getEventTime(); 5320 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5321 if (ev.getY() > 0) pageDown(true); 5322 if (ev.getY() < 0) pageUp(true); 5323 return true; 5324 } 5325 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5326 if (mSelectingText) { 5327 return true; // discard press if copy in progress 5328 } 5329 mTrackballDown = true; 5330 if (mNativeClass == 0) { 5331 return false; 5332 } 5333 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5334 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5335 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5336 nativeSelectBestAt(mLastCursorBounds); 5337 } 5338 if (DebugFlags.WEB_VIEW) { 5339 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5340 + " time=" + time 5341 + " mLastCursorTime=" + mLastCursorTime); 5342 } 5343 if (isInTouchMode()) requestFocusFromTouch(); 5344 return false; // let common code in onKeyDown at it 5345 } 5346 if (ev.getAction() == MotionEvent.ACTION_UP) { 5347 // LONG_PRESS_CENTER is set in common onKeyDown 5348 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5349 mTrackballDown = false; 5350 mTrackballUpTime = time; 5351 if (mSelectingText) { 5352 if (mExtendSelection) { 5353 copySelection(); 5354 selectionDone(); 5355 } else { 5356 mExtendSelection = true; 5357 nativeSetExtendSelection(); 5358 invalidate(); // draw the i-beam instead of the arrow 5359 } 5360 return true; // discard press if copy in progress 5361 } 5362 if (DebugFlags.WEB_VIEW) { 5363 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5364 + " time=" + time 5365 ); 5366 } 5367 return false; // let common code in onKeyUp at it 5368 } 5369 if (mMapTrackballToArrowKeys && mShiftIsPressed == false) { 5370 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5371 return false; 5372 } 5373 if (mTrackballDown) { 5374 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5375 return true; // discard move if trackball is down 5376 } 5377 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5378 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5379 return true; 5380 } 5381 // TODO: alternatively we can do panning as touch does 5382 switchOutDrawHistory(); 5383 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5384 if (DebugFlags.WEB_VIEW) { 5385 Log.v(LOGTAG, "onTrackballEvent time=" 5386 + time + " last=" + mTrackballLastTime); 5387 } 5388 mTrackballFirstTime = time; 5389 mTrackballXMove = mTrackballYMove = 0; 5390 } 5391 mTrackballLastTime = time; 5392 if (DebugFlags.WEB_VIEW) { 5393 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5394 } 5395 mTrackballRemainsX += ev.getX(); 5396 mTrackballRemainsY += ev.getY(); 5397 doTrackball(time); 5398 return true; 5399 } 5400 5401 void moveSelection(float xRate, float yRate) { 5402 if (mNativeClass == 0) 5403 return; 5404 int width = getViewWidth(); 5405 int height = getViewHeight(); 5406 mSelectX += xRate; 5407 mSelectY += yRate; 5408 int maxX = width + mScrollX; 5409 int maxY = height + mScrollY; 5410 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5411 , mSelectX)); 5412 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5413 , mSelectY)); 5414 if (DebugFlags.WEB_VIEW) { 5415 Log.v(LOGTAG, "moveSelection" 5416 + " mSelectX=" + mSelectX 5417 + " mSelectY=" + mSelectY 5418 + " mScrollX=" + mScrollX 5419 + " mScrollY=" + mScrollY 5420 + " xRate=" + xRate 5421 + " yRate=" + yRate 5422 ); 5423 } 5424 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 5425 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5426 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5427 : 0; 5428 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5429 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5430 : 0; 5431 pinScrollBy(scrollX, scrollY, true, 0); 5432 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5433 requestRectangleOnScreen(select); 5434 invalidate(); 5435 } 5436 5437 private int scaleTrackballX(float xRate, int width) { 5438 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5439 int nextXMove = xMove; 5440 if (xMove > 0) { 5441 if (xMove > mTrackballXMove) { 5442 xMove -= mTrackballXMove; 5443 } 5444 } else if (xMove < mTrackballXMove) { 5445 xMove -= mTrackballXMove; 5446 } 5447 mTrackballXMove = nextXMove; 5448 return xMove; 5449 } 5450 5451 private int scaleTrackballY(float yRate, int height) { 5452 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5453 int nextYMove = yMove; 5454 if (yMove > 0) { 5455 if (yMove > mTrackballYMove) { 5456 yMove -= mTrackballYMove; 5457 } 5458 } else if (yMove < mTrackballYMove) { 5459 yMove -= mTrackballYMove; 5460 } 5461 mTrackballYMove = nextYMove; 5462 return yMove; 5463 } 5464 5465 private int keyCodeToSoundsEffect(int keyCode) { 5466 switch(keyCode) { 5467 case KeyEvent.KEYCODE_DPAD_UP: 5468 return SoundEffectConstants.NAVIGATION_UP; 5469 case KeyEvent.KEYCODE_DPAD_RIGHT: 5470 return SoundEffectConstants.NAVIGATION_RIGHT; 5471 case KeyEvent.KEYCODE_DPAD_DOWN: 5472 return SoundEffectConstants.NAVIGATION_DOWN; 5473 case KeyEvent.KEYCODE_DPAD_LEFT: 5474 return SoundEffectConstants.NAVIGATION_LEFT; 5475 } 5476 throw new IllegalArgumentException("keyCode must be one of " + 5477 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5478 "KEYCODE_DPAD_LEFT}."); 5479 } 5480 5481 private void doTrackball(long time) { 5482 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5483 if (elapsed == 0) { 5484 elapsed = TRACKBALL_TIMEOUT; 5485 } 5486 float xRate = mTrackballRemainsX * 1000 / elapsed; 5487 float yRate = mTrackballRemainsY * 1000 / elapsed; 5488 int viewWidth = getViewWidth(); 5489 int viewHeight = getViewHeight(); 5490 if (mSelectingText) { 5491 if (!mDrawSelectionPointer) { 5492 // The last selection was made by touch, disabling drawing the 5493 // selection pointer. Allow the trackball to adjust the 5494 // position of the touch control. 5495 mSelectX = contentToViewX(nativeSelectionX()); 5496 mSelectY = contentToViewY(nativeSelectionY()); 5497 mDrawSelectionPointer = mExtendSelection = true; 5498 nativeSetExtendSelection(); 5499 } 5500 moveSelection(scaleTrackballX(xRate, viewWidth), 5501 scaleTrackballY(yRate, viewHeight)); 5502 mTrackballRemainsX = mTrackballRemainsY = 0; 5503 return; 5504 } 5505 float ax = Math.abs(xRate); 5506 float ay = Math.abs(yRate); 5507 float maxA = Math.max(ax, ay); 5508 if (DebugFlags.WEB_VIEW) { 5509 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5510 + " xRate=" + xRate 5511 + " yRate=" + yRate 5512 + " mTrackballRemainsX=" + mTrackballRemainsX 5513 + " mTrackballRemainsY=" + mTrackballRemainsY); 5514 } 5515 int width = mContentWidth - viewWidth; 5516 int height = mContentHeight - viewHeight; 5517 if (width < 0) width = 0; 5518 if (height < 0) height = 0; 5519 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5520 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5521 maxA = Math.max(ax, ay); 5522 int count = Math.max(0, (int) maxA); 5523 int oldScrollX = mScrollX; 5524 int oldScrollY = mScrollY; 5525 if (count > 0) { 5526 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5527 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5528 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5529 KeyEvent.KEYCODE_DPAD_RIGHT; 5530 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5531 if (DebugFlags.WEB_VIEW) { 5532 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5533 + " count=" + count 5534 + " mTrackballRemainsX=" + mTrackballRemainsX 5535 + " mTrackballRemainsY=" + mTrackballRemainsY); 5536 } 5537 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 5538 for (int i = 0; i < count; i++) { 5539 letPageHandleNavKey(selectKeyCode, time, true); 5540 } 5541 letPageHandleNavKey(selectKeyCode, time, false); 5542 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5543 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5544 } 5545 mTrackballRemainsX = mTrackballRemainsY = 0; 5546 } 5547 if (count >= TRACKBALL_SCROLL_COUNT) { 5548 int xMove = scaleTrackballX(xRate, width); 5549 int yMove = scaleTrackballY(yRate, height); 5550 if (DebugFlags.WEB_VIEW) { 5551 Log.v(LOGTAG, "doTrackball pinScrollBy" 5552 + " count=" + count 5553 + " xMove=" + xMove + " yMove=" + yMove 5554 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5555 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5556 ); 5557 } 5558 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5559 xMove = 0; 5560 } 5561 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5562 yMove = 0; 5563 } 5564 if (xMove != 0 || yMove != 0) { 5565 pinScrollBy(xMove, yMove, true, 0); 5566 } 5567 mUserScroll = true; 5568 } 5569 } 5570 5571 private int computeMaxScrollX() { 5572 return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5573 } 5574 5575 private int computeMaxScrollY() { 5576 return Math.max(computeVerticalScrollRange() + getTitleHeight() 5577 - getViewHeightWithTitle(), 0); 5578 } 5579 5580 boolean updateScrollCoordinates(int x, int y) { 5581 int oldX = mScrollX; 5582 int oldY = mScrollY; 5583 mScrollX = x; 5584 mScrollY = y; 5585 if (oldX != mScrollX || oldY != mScrollY) { 5586 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 5587 return true; 5588 } else { 5589 return false; 5590 } 5591 } 5592 5593 public void flingScroll(int vx, int vy) { 5594 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5595 computeMaxScrollY()); 5596 invalidate(); 5597 } 5598 5599 private void doFling() { 5600 if (mVelocityTracker == null) { 5601 return; 5602 } 5603 int maxX = computeMaxScrollX(); 5604 int maxY = computeMaxScrollY(); 5605 5606 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5607 int vx = (int) mVelocityTracker.getXVelocity(); 5608 int vy = (int) mVelocityTracker.getYVelocity(); 5609 5610 if (mSnapScrollMode != SNAP_NONE) { 5611 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5612 vy = 0; 5613 } else { 5614 vx = 0; 5615 } 5616 } 5617 if (true /* EMG release: make our fling more like Maps' */) { 5618 // maps cuts their velocity in half 5619 vx = vx * 3 / 4; 5620 vy = vy * 3 / 4; 5621 } 5622 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5623 WebViewCore.resumePriority(); 5624 WebViewCore.resumeUpdatePicture(mWebViewCore); 5625 return; 5626 } 5627 float currentVelocity = mScroller.getCurrVelocity(); 5628 float velocity = (float) Math.hypot(vx, vy); 5629 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 5630 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 5631 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5632 - Math.atan2(vy, vx))); 5633 final float circle = (float) (Math.PI) * 2.0f; 5634 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5635 vx += currentVelocity * mLastVelX / mLastVelocity; 5636 vy += currentVelocity * mLastVelY / mLastVelocity; 5637 velocity = (float) Math.hypot(vx, vy); 5638 if (DebugFlags.WEB_VIEW) { 5639 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5640 } 5641 } else if (DebugFlags.WEB_VIEW) { 5642 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5643 } 5644 } else if (DebugFlags.WEB_VIEW) { 5645 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5646 + " current=" + currentVelocity 5647 + " vx=" + vx + " vy=" + vy 5648 + " maxX=" + maxX + " maxY=" + maxY 5649 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5650 } 5651 mLastVelX = vx; 5652 mLastVelY = vy; 5653 mLastVelocity = velocity; 5654 5655 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5656 final int time = mScroller.getDuration(); 5657 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5658 awakenScrollBars(time); 5659 invalidate(); 5660 } 5661 5662 /** 5663 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5664 * in charge of installing this view to the view hierarchy. This view will 5665 * become visible when the user starts scrolling via touch and fade away if 5666 * the user does not interact with it. 5667 * <p/> 5668 * API version 3 introduces a built-in zoom mechanism that is shown 5669 * automatically by the MapView. This is the preferred approach for 5670 * showing the zoom UI. 5671 * 5672 * @deprecated The built-in zoom mechanism is preferred, see 5673 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5674 */ 5675 @Deprecated 5676 public View getZoomControls() { 5677 if (!getSettings().supportZoom()) { 5678 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5679 return null; 5680 } 5681 return mZoomManager.getExternalZoomPicker(); 5682 } 5683 5684 void dismissZoomControl() { 5685 mZoomManager.dismissZoomPicker(); 5686 } 5687 5688 float getDefaultZoomScale() { 5689 return mZoomManager.getDefaultScale(); 5690 } 5691 5692 /** 5693 * @return TRUE if the WebView can be zoomed in. 5694 */ 5695 public boolean canZoomIn() { 5696 return mZoomManager.canZoomIn(); 5697 } 5698 5699 /** 5700 * @return TRUE if the WebView can be zoomed out. 5701 */ 5702 public boolean canZoomOut() { 5703 return mZoomManager.canZoomOut(); 5704 } 5705 5706 /** 5707 * Perform zoom in in the webview 5708 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5709 */ 5710 public boolean zoomIn() { 5711 return mZoomManager.zoomIn(); 5712 } 5713 5714 /** 5715 * Perform zoom out in the webview 5716 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5717 */ 5718 public boolean zoomOut() { 5719 return mZoomManager.zoomOut(); 5720 } 5721 5722 private void updateSelection() { 5723 if (mNativeClass == 0) { 5724 return; 5725 } 5726 // mLastTouchX and mLastTouchY are the point in the current viewport 5727 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5728 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5729 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5730 contentX + mNavSlop, contentY + mNavSlop); 5731 nativeSelectBestAt(rect); 5732 } 5733 5734 /** 5735 * Scroll the focused text field/area to match the WebTextView 5736 * @param xPercent New x position of the WebTextView from 0 to 1. 5737 * @param y New y position of the WebTextView in view coordinates 5738 */ 5739 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5740 if (!inEditingMode() || mWebViewCore == null) { 5741 return; 5742 } 5743 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5744 // Since this position is relative to the top of the text input 5745 // field, we do not need to take the title bar's height into 5746 // consideration. 5747 viewToContentDimension(y), 5748 new Float(xPercent)); 5749 } 5750 5751 /** 5752 * Set our starting point and time for a drag from the WebTextView. 5753 */ 5754 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5755 if (!inEditingMode()) { 5756 return; 5757 } 5758 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5759 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5760 mLastTouchTime = eventTime; 5761 if (!mScroller.isFinished()) { 5762 abortAnimation(); 5763 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5764 } 5765 mSnapScrollMode = SNAP_NONE; 5766 mVelocityTracker = VelocityTracker.obtain(); 5767 mTouchMode = TOUCH_DRAG_START_MODE; 5768 } 5769 5770 /** 5771 * Given a motion event from the WebTextView, set its location to our 5772 * coordinates, and handle the event. 5773 */ 5774 /*package*/ boolean textFieldDrag(MotionEvent event) { 5775 if (!inEditingMode()) { 5776 return false; 5777 } 5778 mDragFromTextInput = true; 5779 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5780 (float) (mWebTextView.getTop() - mScrollY)); 5781 boolean result = onTouchEvent(event); 5782 mDragFromTextInput = false; 5783 return result; 5784 } 5785 5786 /** 5787 * Due a touch up from a WebTextView. This will be handled by webkit to 5788 * change the selection. 5789 * @param event MotionEvent in the WebTextView's coordinates. 5790 */ 5791 /*package*/ void touchUpOnTextField(MotionEvent event) { 5792 if (!inEditingMode()) { 5793 return; 5794 } 5795 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 5796 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 5797 nativeMotionUp(x, y, mNavSlop); 5798 } 5799 5800 /** 5801 * Called when pressing the center key or trackball on a textfield. 5802 */ 5803 /*package*/ void centerKeyPressOnTextField() { 5804 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 5805 nativeCursorNodePointer()); 5806 } 5807 5808 private void doShortPress() { 5809 if (mNativeClass == 0) { 5810 return; 5811 } 5812 if (mPreventDefault == PREVENT_DEFAULT_YES) { 5813 return; 5814 } 5815 mTouchMode = TOUCH_DONE_MODE; 5816 switchOutDrawHistory(); 5817 // mLastTouchX and mLastTouchY are the point in the current viewport 5818 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5819 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5820 if (getSettings().supportTouchOnly()) { 5821 removeTouchHighlight(false); 5822 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 5823 // use "0" as generation id to inform WebKit to use the same x/y as 5824 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 5825 touchUpData.mMoveGeneration = 0; 5826 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 5827 } else if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 5828 WebViewCore.MotionUpData motionUpData = new WebViewCore 5829 .MotionUpData(); 5830 motionUpData.mFrame = nativeCacheHitFramePointer(); 5831 motionUpData.mNode = nativeCacheHitNodePointer(); 5832 motionUpData.mBounds = nativeCacheHitNodeBounds(); 5833 motionUpData.mX = contentX; 5834 motionUpData.mY = contentY; 5835 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 5836 motionUpData); 5837 } else { 5838 doMotionUp(contentX, contentY); 5839 } 5840 } 5841 5842 private void doMotionUp(int contentX, int contentY) { 5843 if (mLogEvent && nativeMotionUp(contentX, contentY, mNavSlop)) { 5844 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 5845 } 5846 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 5847 playSoundEffect(SoundEffectConstants.CLICK); 5848 } 5849 } 5850 5851 /* 5852 * Return true if the view (Plugin) is fully visible and maximized inside 5853 * the WebView. 5854 */ 5855 boolean isPluginFitOnScreen(ViewManager.ChildView view) { 5856 final int viewWidth = getViewWidth(); 5857 final int viewHeight = getViewHeightWithTitle(); 5858 float scale = Math.min((float) viewWidth / view.width, (float) viewHeight / view.height); 5859 scale = mZoomManager.computeScaleWithLimits(scale); 5860 return !mZoomManager.willScaleTriggerZoom(scale) 5861 && contentToViewX(view.x) >= mScrollX 5862 && contentToViewX(view.x + view.width) <= mScrollX + viewWidth 5863 && contentToViewY(view.y) >= mScrollY 5864 && contentToViewY(view.y + view.height) <= mScrollY + viewHeight; 5865 } 5866 5867 /* 5868 * Maximize and center the rectangle, specified in the document coordinate 5869 * space, inside the WebView. If the zoom doesn't need to be changed, do an 5870 * animated scroll to center it. If the zoom needs to be changed, find the 5871 * zoom center and do a smooth zoom transition. 5872 */ 5873 void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 5874 int viewWidth = getViewWidth(); 5875 int viewHeight = getViewHeightWithTitle(); 5876 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 5877 / docHeight); 5878 scale = mZoomManager.computeScaleWithLimits(scale); 5879 if (!mZoomManager.willScaleTriggerZoom(scale)) { 5880 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 5881 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 5882 true, 0); 5883 } else { 5884 float actualScale = mZoomManager.getScale(); 5885 float oldScreenX = docX * actualScale - mScrollX; 5886 float rectViewX = docX * scale; 5887 float rectViewWidth = docWidth * scale; 5888 float newMaxWidth = mContentWidth * scale; 5889 float newScreenX = (viewWidth - rectViewWidth) / 2; 5890 // pin the newX to the WebView 5891 if (newScreenX > rectViewX) { 5892 newScreenX = rectViewX; 5893 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 5894 newScreenX = viewWidth - (newMaxWidth - rectViewX); 5895 } 5896 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 5897 / (scale - actualScale); 5898 float oldScreenY = docY * actualScale + getTitleHeight() 5899 - mScrollY; 5900 float rectViewY = docY * scale + getTitleHeight(); 5901 float rectViewHeight = docHeight * scale; 5902 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 5903 float newScreenY = (viewHeight - rectViewHeight) / 2; 5904 // pin the newY to the WebView 5905 if (newScreenY > rectViewY) { 5906 newScreenY = rectViewY; 5907 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 5908 newScreenY = viewHeight - (newMaxHeight - rectViewY); 5909 } 5910 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 5911 / (scale - actualScale); 5912 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 5913 mZoomManager.startZoomAnimation(scale, false); 5914 } 5915 } 5916 5917 // Called by JNI to handle a touch on a node representing an email address, 5918 // address, or phone number 5919 private void overrideLoading(String url) { 5920 mCallbackProxy.uiOverrideUrlLoading(url); 5921 } 5922 5923 @Override 5924 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 5925 // FIXME: If a subwindow is showing find, and the user touches the 5926 // background window, it can steal focus. 5927 if (mFindIsUp) return false; 5928 boolean result = false; 5929 if (inEditingMode()) { 5930 result = mWebTextView.requestFocus(direction, 5931 previouslyFocusedRect); 5932 } else { 5933 result = super.requestFocus(direction, previouslyFocusedRect); 5934 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 5935 // For cases such as GMail, where we gain focus from a direction, 5936 // we want to move to the first available link. 5937 // FIXME: If there are no visible links, we may not want to 5938 int fakeKeyDirection = 0; 5939 switch(direction) { 5940 case View.FOCUS_UP: 5941 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 5942 break; 5943 case View.FOCUS_DOWN: 5944 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 5945 break; 5946 case View.FOCUS_LEFT: 5947 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 5948 break; 5949 case View.FOCUS_RIGHT: 5950 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 5951 break; 5952 default: 5953 return result; 5954 } 5955 if (mNativeClass != 0 && !nativeHasCursorNode()) { 5956 navHandledKey(fakeKeyDirection, 1, true, 0); 5957 } 5958 } 5959 } 5960 return result; 5961 } 5962 5963 @Override 5964 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 5965 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 5966 5967 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 5968 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 5969 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 5970 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 5971 5972 int measuredHeight = heightSize; 5973 int measuredWidth = widthSize; 5974 5975 // Grab the content size from WebViewCore. 5976 int contentHeight = contentToViewDimension(mContentHeight); 5977 int contentWidth = contentToViewDimension(mContentWidth); 5978 5979// Log.d(LOGTAG, "------- measure " + heightMode); 5980 5981 if (heightMode != MeasureSpec.EXACTLY) { 5982 mHeightCanMeasure = true; 5983 measuredHeight = contentHeight; 5984 if (heightMode == MeasureSpec.AT_MOST) { 5985 // If we are larger than the AT_MOST height, then our height can 5986 // no longer be measured and we should scroll internally. 5987 if (measuredHeight > heightSize) { 5988 measuredHeight = heightSize; 5989 mHeightCanMeasure = false; 5990 } 5991 } 5992 } else { 5993 mHeightCanMeasure = false; 5994 } 5995 if (mNativeClass != 0) { 5996 nativeSetHeightCanMeasure(mHeightCanMeasure); 5997 } 5998 // For the width, always use the given size unless unspecified. 5999 if (widthMode == MeasureSpec.UNSPECIFIED) { 6000 mWidthCanMeasure = true; 6001 measuredWidth = contentWidth; 6002 } else { 6003 mWidthCanMeasure = false; 6004 } 6005 6006 synchronized (this) { 6007 setMeasuredDimension(measuredWidth, measuredHeight); 6008 } 6009 } 6010 6011 @Override 6012 public boolean requestChildRectangleOnScreen(View child, 6013 Rect rect, 6014 boolean immediate) { 6015 // don't scroll while in zoom animation. When it is done, we will adjust 6016 // the necessary components (e.g., WebTextView if it is in editing mode) 6017 if (mZoomManager.isFixedLengthAnimationInProgress()) { 6018 return false; 6019 } 6020 6021 rect.offset(child.getLeft() - child.getScrollX(), 6022 child.getTop() - child.getScrollY()); 6023 6024 Rect content = new Rect(viewToContentX(mScrollX), 6025 viewToContentY(mScrollY), 6026 viewToContentX(mScrollX + getWidth() 6027 - getVerticalScrollbarWidth()), 6028 viewToContentY(mScrollY + getViewHeightWithTitle())); 6029 content = nativeSubtractLayers(content); 6030 int screenTop = contentToViewY(content.top); 6031 int screenBottom = contentToViewY(content.bottom); 6032 int height = screenBottom - screenTop; 6033 int scrollYDelta = 0; 6034 6035 if (rect.bottom > screenBottom) { 6036 int oneThirdOfScreenHeight = height / 3; 6037 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6038 // If the rectangle is too tall to fit in the bottom two thirds 6039 // of the screen, place it at the top. 6040 scrollYDelta = rect.top - screenTop; 6041 } else { 6042 // If the rectangle will still fit on screen, we want its 6043 // top to be in the top third of the screen. 6044 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6045 } 6046 } else if (rect.top < screenTop) { 6047 scrollYDelta = rect.top - screenTop; 6048 } 6049 6050 int screenLeft = contentToViewX(content.left); 6051 int screenRight = contentToViewX(content.right); 6052 int width = screenRight - screenLeft; 6053 int scrollXDelta = 0; 6054 6055 if (rect.right > screenRight && rect.left > screenLeft) { 6056 if (rect.width() > width) { 6057 scrollXDelta += (rect.left - screenLeft); 6058 } else { 6059 scrollXDelta += (rect.right - screenRight); 6060 } 6061 } else if (rect.left < screenLeft) { 6062 scrollXDelta -= (screenLeft - rect.left); 6063 } 6064 6065 if ((scrollYDelta | scrollXDelta) != 0) { 6066 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6067 } 6068 6069 return false; 6070 } 6071 6072 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6073 String replace, int newStart, int newEnd) { 6074 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6075 arg.mReplace = replace; 6076 arg.mNewStart = newStart; 6077 arg.mNewEnd = newEnd; 6078 mTextGeneration++; 6079 arg.mTextGeneration = mTextGeneration; 6080 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6081 } 6082 6083 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6084 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6085 arg.mEvent = event; 6086 arg.mCurrentText = currentText; 6087 // Increase our text generation number, and pass it to webcore thread 6088 mTextGeneration++; 6089 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6090 // WebKit's document state is not saved until about to leave the page. 6091 // To make sure the host application, like Browser, has the up to date 6092 // document state when it goes to background, we force to save the 6093 // document state. 6094 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6095 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6096 cursorData(), 1000); 6097 } 6098 6099 /* package */ synchronized WebViewCore getWebViewCore() { 6100 return mWebViewCore; 6101 } 6102 6103 //------------------------------------------------------------------------- 6104 // Methods can be called from a separate thread, like WebViewCore 6105 // If it needs to call the View system, it has to send message. 6106 //------------------------------------------------------------------------- 6107 6108 /** 6109 * General handler to receive message coming from webkit thread 6110 */ 6111 class PrivateHandler extends Handler { 6112 @Override 6113 public void handleMessage(Message msg) { 6114 // exclude INVAL_RECT_MSG_ID since it is frequently output 6115 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6116 if (msg.what >= FIRST_PRIVATE_MSG_ID 6117 && msg.what <= LAST_PRIVATE_MSG_ID) { 6118 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6119 - FIRST_PRIVATE_MSG_ID]); 6120 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6121 && msg.what <= LAST_PACKAGE_MSG_ID) { 6122 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6123 - FIRST_PACKAGE_MSG_ID]); 6124 } else { 6125 Log.v(LOGTAG, Integer.toString(msg.what)); 6126 } 6127 } 6128 if (mWebViewCore == null) { 6129 // after WebView's destroy() is called, skip handling messages. 6130 return; 6131 } 6132 switch (msg.what) { 6133 case REMEMBER_PASSWORD: { 6134 mDatabase.setUsernamePassword( 6135 msg.getData().getString("host"), 6136 msg.getData().getString("username"), 6137 msg.getData().getString("password")); 6138 ((Message) msg.obj).sendToTarget(); 6139 break; 6140 } 6141 case NEVER_REMEMBER_PASSWORD: { 6142 mDatabase.setUsernamePassword( 6143 msg.getData().getString("host"), null, null); 6144 ((Message) msg.obj).sendToTarget(); 6145 break; 6146 } 6147 case PREVENT_DEFAULT_TIMEOUT: { 6148 // if timeout happens, cancel it so that it won't block UI 6149 // to continue handling touch events 6150 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6151 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6152 || (msg.arg1 == MotionEvent.ACTION_MOVE 6153 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6154 cancelWebCoreTouchEvent( 6155 viewToContentX((int) mLastTouchX + mScrollX), 6156 viewToContentY((int) mLastTouchY + mScrollY), 6157 true); 6158 } 6159 break; 6160 } 6161 case SWITCH_TO_SHORTPRESS: { 6162 if (mTouchMode == TOUCH_INIT_MODE) { 6163 if (!getSettings().supportTouchOnly() 6164 && mPreventDefault != PREVENT_DEFAULT_YES) { 6165 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6166 updateSelection(); 6167 } else { 6168 // set to TOUCH_SHORTPRESS_MODE so that it won't 6169 // trigger double tap any more 6170 mTouchMode = TOUCH_SHORTPRESS_MODE; 6171 } 6172 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6173 mTouchMode = TOUCH_DONE_MODE; 6174 } 6175 break; 6176 } 6177 case SWITCH_TO_LONGPRESS: { 6178 if (getSettings().supportTouchOnly()) { 6179 removeTouchHighlight(false); 6180 } 6181 if (inFullScreenMode() || mDeferTouchProcess) { 6182 TouchEventData ted = new TouchEventData(); 6183 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6184 ted.mX = viewToContentX((int) mLastTouchX + mScrollX); 6185 ted.mY = viewToContentY((int) mLastTouchY + mScrollY); 6186 // metaState for long press is tricky. Should it be the 6187 // state when the press started or when the press was 6188 // released? Or some intermediary key state? For 6189 // simplicity for now, we don't set it. 6190 ted.mMetaState = 0; 6191 ted.mReprocess = mDeferTouchProcess; 6192 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6193 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6194 mTouchMode = TOUCH_DONE_MODE; 6195 performLongClick(); 6196 } 6197 break; 6198 } 6199 case RELEASE_SINGLE_TAP: { 6200 doShortPress(); 6201 break; 6202 } 6203 case SCROLL_BY_MSG_ID: 6204 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6205 break; 6206 case SYNC_SCROLL_TO_MSG_ID: 6207 if (mUserScroll) { 6208 // if user has scrolled explicitly, don't sync the 6209 // scroll position any more 6210 mUserScroll = false; 6211 break; 6212 } 6213 // fall through 6214 case SCROLL_TO_MSG_ID: 6215 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6216 // if we can't scroll to the exact position due to pin, 6217 // send a message to WebCore to re-scroll when we get a 6218 // new picture 6219 mUserScroll = false; 6220 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6221 msg.arg1, msg.arg2); 6222 } 6223 break; 6224 case SPAWN_SCROLL_TO_MSG_ID: 6225 spawnContentScrollTo(msg.arg1, msg.arg2); 6226 break; 6227 case UPDATE_ZOOM_RANGE: { 6228 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 6229 // mScrollX contains the new minPrefWidth 6230 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 6231 break; 6232 } 6233 case REPLACE_BASE_CONTENT: { 6234 nativeReplaceBaseContent(msg.arg1); 6235 break; 6236 } 6237 case NEW_PICTURE_MSG_ID: { 6238 // called for new content 6239 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 6240 nativeSetBaseLayer(draw.mBaseLayer); 6241 final Point viewSize = draw.mViewPoint; 6242 WebViewCore.ViewState viewState = draw.mViewState; 6243 boolean isPictureAfterFirstLayout = viewState != null; 6244 if (isPictureAfterFirstLayout) { 6245 // Reset the last sent data here since dealing with new page. 6246 mLastWidthSent = 0; 6247 mZoomManager.onFirstLayout(draw); 6248 if (!mDrawHistory) { 6249 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 6250 // As we are on a new page, remove the WebTextView. This 6251 // is necessary for page loads driven by webkit, and in 6252 // particular when the user was on a password field, so 6253 // the WebTextView was visible. 6254 clearTextEntry(false); 6255 } 6256 } 6257 6258 // We update the layout (i.e. request a layout from the 6259 // view system) if the last view size that we sent to 6260 // WebCore matches the view size of the picture we just 6261 // received in the fixed dimension. 6262 final boolean updateLayout = viewSize.x == mLastWidthSent 6263 && viewSize.y == mLastHeightSent; 6264 recordNewContentSize(draw.mWidthHeight.x, 6265 draw.mWidthHeight.y, updateLayout); 6266 if (DebugFlags.WEB_VIEW) { 6267 Rect b = draw.mInvalRegion.getBounds(); 6268 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6269 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6270 } 6271 invalidateContentRect(draw.mInvalRegion.getBounds()); 6272 6273 if (mPictureListener != null) { 6274 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6275 } 6276 6277 // update the zoom information based on the new picture 6278 mZoomManager.onNewPicture(draw); 6279 6280 if (draw.mFocusSizeChanged && inEditingMode()) { 6281 mFocusSizeChanged = true; 6282 } 6283 if (isPictureAfterFirstLayout) { 6284 mViewManager.postReadyToDrawAll(); 6285 } 6286 break; 6287 } 6288 case WEBCORE_INITIALIZED_MSG_ID: 6289 // nativeCreate sets mNativeClass to a non-zero value 6290 nativeCreate(msg.arg1); 6291 break; 6292 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6293 // Make sure that the textfield is currently focused 6294 // and representing the same node as the pointer. 6295 if (inEditingMode() && 6296 mWebTextView.isSameTextField(msg.arg1)) { 6297 if (msg.getData().getBoolean("password")) { 6298 Spannable text = (Spannable) mWebTextView.getText(); 6299 int start = Selection.getSelectionStart(text); 6300 int end = Selection.getSelectionEnd(text); 6301 mWebTextView.setInPassword(true); 6302 // Restore the selection, which may have been 6303 // ruined by setInPassword. 6304 Spannable pword = 6305 (Spannable) mWebTextView.getText(); 6306 Selection.setSelection(pword, start, end); 6307 // If the text entry has created more events, ignore 6308 // this one. 6309 } else if (msg.arg2 == mTextGeneration) { 6310 mWebTextView.setTextAndKeepSelection( 6311 (String) msg.obj); 6312 } 6313 } 6314 break; 6315 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6316 displaySoftKeyboard(true); 6317 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 6318 case UPDATE_TEXT_SELECTION_MSG_ID: 6319 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6320 (WebViewCore.TextSelectionData) msg.obj); 6321 break; 6322 case RETURN_LABEL: 6323 if (inEditingMode() 6324 && mWebTextView.isSameTextField(msg.arg1)) { 6325 mWebTextView.setHint((String) msg.obj); 6326 InputMethodManager imm 6327 = InputMethodManager.peekInstance(); 6328 // The hint is propagated to the IME in 6329 // onCreateInputConnection. If the IME is already 6330 // active, restart it so that its hint text is updated. 6331 if (imm != null && imm.isActive(mWebTextView)) { 6332 imm.restartInput(mWebTextView); 6333 } 6334 } 6335 break; 6336 case UNHANDLED_NAV_KEY: 6337 navHandledKey(msg.arg1, 1, false, 0); 6338 break; 6339 case UPDATE_TEXT_ENTRY_MSG_ID: 6340 // this is sent after finishing resize in WebViewCore. Make 6341 // sure the text edit box is still on the screen. 6342 if (inEditingMode() && nativeCursorIsTextInput()) { 6343 mWebTextView.bringIntoView(); 6344 rebuildWebTextView(); 6345 } 6346 break; 6347 case CLEAR_TEXT_ENTRY: 6348 clearTextEntry(false); 6349 break; 6350 case INVAL_RECT_MSG_ID: { 6351 Rect r = (Rect)msg.obj; 6352 if (r == null) { 6353 invalidate(); 6354 } else { 6355 // we need to scale r from content into view coords, 6356 // which viewInvalidate() does for us 6357 viewInvalidate(r.left, r.top, r.right, r.bottom); 6358 } 6359 break; 6360 } 6361 case REQUEST_FORM_DATA: 6362 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6363 if (mWebTextView.isSameTextField(msg.arg1)) { 6364 mWebTextView.setAdapterCustom(adapter); 6365 } 6366 break; 6367 case RESUME_WEBCORE_PRIORITY: 6368 WebViewCore.resumePriority(); 6369 WebViewCore.resumeUpdatePicture(mWebViewCore); 6370 break; 6371 6372 case LONG_PRESS_CENTER: 6373 // as this is shared by keydown and trackballdown, reset all 6374 // the states 6375 mGotCenterDown = false; 6376 mTrackballDown = false; 6377 performLongClick(); 6378 break; 6379 6380 case WEBCORE_NEED_TOUCH_EVENTS: 6381 mForwardTouchEvents = (msg.arg1 != 0); 6382 break; 6383 6384 case PREVENT_TOUCH_ID: 6385 if (inFullScreenMode()) { 6386 break; 6387 } 6388 if (msg.obj == null) { 6389 if (msg.arg1 == MotionEvent.ACTION_DOWN 6390 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 6391 // if prevent default is called from WebCore, UI 6392 // will not handle the rest of the touch events any 6393 // more. 6394 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6395 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 6396 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 6397 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6398 // the return for the first ACTION_MOVE will decide 6399 // whether UI will handle touch or not. Currently no 6400 // support for alternating prevent default 6401 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6402 : PREVENT_DEFAULT_NO; 6403 } 6404 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6405 mTouchHighlightRegion.setEmpty(); 6406 } 6407 } else if (msg.arg2 == 0) { 6408 // prevent default is not called in WebCore, so the 6409 // message needs to be reprocessed in UI 6410 TouchEventData ted = (TouchEventData) msg.obj; 6411 switch (ted.mAction) { 6412 case MotionEvent.ACTION_DOWN: 6413 mLastDeferTouchX = contentToViewX(ted.mX) 6414 - mScrollX; 6415 mLastDeferTouchY = contentToViewY(ted.mY) 6416 - mScrollY; 6417 mDeferTouchMode = TOUCH_INIT_MODE; 6418 break; 6419 case MotionEvent.ACTION_MOVE: { 6420 // no snapping in defer process 6421 int x = contentToViewX(ted.mX) - mScrollX; 6422 int y = contentToViewY(ted.mY) - mScrollY; 6423 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 6424 mDeferTouchMode = TOUCH_DRAG_MODE; 6425 mLastDeferTouchX = x; 6426 mLastDeferTouchY = y; 6427 startDrag(); 6428 } 6429 int deltaX = pinLocX((int) (mScrollX 6430 + mLastDeferTouchX - x)) 6431 - mScrollX; 6432 int deltaY = pinLocY((int) (mScrollY 6433 + mLastDeferTouchY - y)) 6434 - mScrollY; 6435 doDrag(deltaX, deltaY); 6436 if (deltaX != 0) mLastDeferTouchX = x; 6437 if (deltaY != 0) mLastDeferTouchY = y; 6438 break; 6439 } 6440 case MotionEvent.ACTION_UP: 6441 case MotionEvent.ACTION_CANCEL: 6442 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 6443 // no fling in defer process 6444 WebViewCore.resumePriority(); 6445 WebViewCore.resumeUpdatePicture(mWebViewCore); 6446 } 6447 mDeferTouchMode = TOUCH_DONE_MODE; 6448 break; 6449 case WebViewCore.ACTION_DOUBLETAP: 6450 // doDoubleTap() needs mLastTouchX/Y as anchor 6451 mLastTouchX = contentToViewX(ted.mX) - mScrollX; 6452 mLastTouchY = contentToViewY(ted.mY) - mScrollY; 6453 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6454 mDeferTouchMode = TOUCH_DONE_MODE; 6455 break; 6456 case WebViewCore.ACTION_LONGPRESS: 6457 HitTestResult hitTest = getHitTestResult(); 6458 if (hitTest != null && hitTest.mType 6459 != HitTestResult.UNKNOWN_TYPE) { 6460 performLongClick(); 6461 } 6462 mDeferTouchMode = TOUCH_DONE_MODE; 6463 break; 6464 } 6465 } 6466 break; 6467 6468 case REQUEST_KEYBOARD: 6469 if (msg.arg1 == 0) { 6470 hideSoftKeyboard(); 6471 } else { 6472 displaySoftKeyboard(false); 6473 } 6474 break; 6475 6476 case FIND_AGAIN: 6477 // Ignore if find has been dismissed. 6478 if (mFindIsUp) { 6479 findAll(mLastFind); 6480 } 6481 break; 6482 6483 case DRAG_HELD_MOTIONLESS: 6484 mHeldMotionless = MOTIONLESS_TRUE; 6485 invalidate(); 6486 // fall through to keep scrollbars awake 6487 6488 case AWAKEN_SCROLL_BARS: 6489 if (mTouchMode == TOUCH_DRAG_MODE 6490 && mHeldMotionless == MOTIONLESS_TRUE) { 6491 awakenScrollBars(ViewConfiguration 6492 .getScrollDefaultDelay(), false); 6493 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6494 .obtainMessage(AWAKEN_SCROLL_BARS), 6495 ViewConfiguration.getScrollDefaultDelay()); 6496 } 6497 break; 6498 6499 case DO_MOTION_UP: 6500 doMotionUp(msg.arg1, msg.arg2); 6501 break; 6502 6503 case SHOW_FULLSCREEN: { 6504 View view = (View) msg.obj; 6505 int npp = msg.arg1; 6506 6507 if (mFullScreenHolder != null) { 6508 Log.w(LOGTAG, "Should not have another full screen."); 6509 mFullScreenHolder.dismiss(); 6510 } 6511 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 6512 mFullScreenHolder.setContentView(view); 6513 mFullScreenHolder.setCancelable(false); 6514 mFullScreenHolder.setCanceledOnTouchOutside(false); 6515 mFullScreenHolder.show(); 6516 6517 break; 6518 } 6519 case HIDE_FULLSCREEN: 6520 if (inFullScreenMode()) { 6521 mFullScreenHolder.dismiss(); 6522 mFullScreenHolder = null; 6523 } 6524 break; 6525 6526 case DOM_FOCUS_CHANGED: 6527 if (inEditingMode()) { 6528 nativeClearCursor(); 6529 rebuildWebTextView(); 6530 } 6531 break; 6532 6533 case SHOW_RECT_MSG_ID: { 6534 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6535 int x = mScrollX; 6536 int left = contentToViewX(data.mLeft); 6537 int width = contentToViewDimension(data.mWidth); 6538 int maxWidth = contentToViewDimension(data.mContentWidth); 6539 int viewWidth = getViewWidth(); 6540 if (width < viewWidth) { 6541 // center align 6542 x += left + width / 2 - mScrollX - viewWidth / 2; 6543 } else { 6544 x += (int) (left + data.mXPercentInDoc * width 6545 - mScrollX - data.mXPercentInView * viewWidth); 6546 } 6547 if (DebugFlags.WEB_VIEW) { 6548 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6549 width + ",maxWidth=" + maxWidth + 6550 ",viewWidth=" + viewWidth + ",x=" 6551 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6552 ",xPercentInView=" + data.mXPercentInView+ ")"); 6553 } 6554 // use the passing content width to cap x as the current 6555 // mContentWidth may not be updated yet 6556 x = Math.max(0, 6557 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6558 int top = contentToViewY(data.mTop); 6559 int height = contentToViewDimension(data.mHeight); 6560 int maxHeight = contentToViewDimension(data.mContentHeight); 6561 int viewHeight = getViewHeight(); 6562 int y = (int) (top + data.mYPercentInDoc * height - 6563 data.mYPercentInView * viewHeight); 6564 if (DebugFlags.WEB_VIEW) { 6565 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6566 height + ",maxHeight=" + maxHeight + 6567 ",viewHeight=" + viewHeight + ",y=" 6568 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6569 ",yPercentInView=" + data.mYPercentInView+ ")"); 6570 } 6571 // use the passing content height to cap y as the current 6572 // mContentHeight may not be updated yet 6573 y = Math.max(0, 6574 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6575 // We need to take into account the visible title height 6576 // when scrolling since y is an absolute view position. 6577 y = Math.max(0, y - getVisibleTitleHeight()); 6578 scrollTo(x, y); 6579 } 6580 break; 6581 6582 case CENTER_FIT_RECT: 6583 Rect r = (Rect)msg.obj; 6584 centerFitRect(r.left, r.top, r.width(), r.height()); 6585 break; 6586 6587 case SET_SCROLLBAR_MODES: 6588 mHorizontalScrollBarMode = msg.arg1; 6589 mVerticalScrollBarMode = msg.arg2; 6590 break; 6591 6592 case SELECTION_STRING_CHANGED: 6593 if (mAccessibilityInjector != null) { 6594 String selectionString = (String) msg.obj; 6595 mAccessibilityInjector.onSelectionStringChange(selectionString); 6596 } 6597 break; 6598 6599 case SET_TOUCH_HIGHLIGHT_RECTS: 6600 invalidate(mTouchHighlightRegion.getBounds()); 6601 mTouchHighlightRegion.setEmpty(); 6602 if (msg.obj != null) { 6603 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 6604 for (Rect rect : rects) { 6605 Rect viewRect = contentToViewRect(rect); 6606 // some sites, like stories in nytimes.com, set 6607 // mouse event handler in the top div. It is not 6608 // user friendly to highlight the div if it covers 6609 // more than half of the screen. 6610 if (viewRect.width() < getWidth() >> 1 6611 || viewRect.height() < getHeight() >> 1) { 6612 mTouchHighlightRegion.union(viewRect); 6613 invalidate(viewRect); 6614 } else { 6615 Log.w(LOGTAG, "Skip the huge selection rect:" 6616 + viewRect); 6617 } 6618 } 6619 } 6620 break; 6621 6622 case SAVE_WEBARCHIVE_FINISHED: 6623 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 6624 if (saveMessage.mCallback != null) { 6625 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 6626 } 6627 break; 6628 6629 default: 6630 super.handleMessage(msg); 6631 break; 6632 } 6633 } 6634 } 6635 6636 /** 6637 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 6638 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 6639 */ 6640 private void updateTextSelectionFromMessage(int nodePointer, 6641 int textGeneration, WebViewCore.TextSelectionData data) { 6642 if (inEditingMode() 6643 && mWebTextView.isSameTextField(nodePointer) 6644 && textGeneration == mTextGeneration) { 6645 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 6646 } 6647 } 6648 6649 // Class used to use a dropdown for a <select> element 6650 private class InvokeListBox implements Runnable { 6651 // Whether the listbox allows multiple selection. 6652 private boolean mMultiple; 6653 // Passed in to a list with multiple selection to tell 6654 // which items are selected. 6655 private int[] mSelectedArray; 6656 // Passed in to a list with single selection to tell 6657 // where the initial selection is. 6658 private int mSelection; 6659 6660 private Container[] mContainers; 6661 6662 // Need these to provide stable ids to my ArrayAdapter, 6663 // which normally does not have stable ids. (Bug 1250098) 6664 private class Container extends Object { 6665 /** 6666 * Possible values for mEnabled. Keep in sync with OptionStatus in 6667 * WebViewCore.cpp 6668 */ 6669 final static int OPTGROUP = -1; 6670 final static int OPTION_DISABLED = 0; 6671 final static int OPTION_ENABLED = 1; 6672 6673 String mString; 6674 int mEnabled; 6675 int mId; 6676 6677 public String toString() { 6678 return mString; 6679 } 6680 } 6681 6682 /** 6683 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6684 * and allow filtering. 6685 */ 6686 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6687 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6688 super(context, 6689 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6690 com.android.internal.R.layout.select_dialog_singlechoice, 6691 objects); 6692 } 6693 6694 @Override 6695 public View getView(int position, View convertView, 6696 ViewGroup parent) { 6697 // Always pass in null so that we will get a new CheckedTextView 6698 // Otherwise, an item which was previously used as an <optgroup> 6699 // element (i.e. has no check), could get used as an <option> 6700 // element, which needs a checkbox/radio, but it would not have 6701 // one. 6702 convertView = super.getView(position, null, parent); 6703 Container c = item(position); 6704 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6705 // ListView does not draw dividers between disabled and 6706 // enabled elements. Use a LinearLayout to provide dividers 6707 LinearLayout layout = new LinearLayout(mContext); 6708 layout.setOrientation(LinearLayout.VERTICAL); 6709 if (position > 0) { 6710 View dividerTop = new View(mContext); 6711 dividerTop.setBackgroundResource( 6712 android.R.drawable.divider_horizontal_bright); 6713 layout.addView(dividerTop); 6714 } 6715 6716 if (Container.OPTGROUP == c.mEnabled) { 6717 // Currently select_dialog_multichoice and 6718 // select_dialog_singlechoice are CheckedTextViews. If 6719 // that changes, the class cast will no longer be valid. 6720 Assert.assertTrue( 6721 convertView instanceof CheckedTextView); 6722 ((CheckedTextView) convertView).setCheckMarkDrawable( 6723 null); 6724 } else { 6725 // c.mEnabled == Container.OPTION_DISABLED 6726 // Draw the disabled element in a disabled state. 6727 convertView.setEnabled(false); 6728 } 6729 6730 layout.addView(convertView); 6731 if (position < getCount() - 1) { 6732 View dividerBottom = new View(mContext); 6733 dividerBottom.setBackgroundResource( 6734 android.R.drawable.divider_horizontal_bright); 6735 layout.addView(dividerBottom); 6736 } 6737 return layout; 6738 } 6739 return convertView; 6740 } 6741 6742 @Override 6743 public boolean hasStableIds() { 6744 // AdapterView's onChanged method uses this to determine whether 6745 // to restore the old state. Return false so that the old (out 6746 // of date) state does not replace the new, valid state. 6747 return false; 6748 } 6749 6750 private Container item(int position) { 6751 if (position < 0 || position >= getCount()) { 6752 return null; 6753 } 6754 return (Container) getItem(position); 6755 } 6756 6757 @Override 6758 public long getItemId(int position) { 6759 Container item = item(position); 6760 if (item == null) { 6761 return -1; 6762 } 6763 return item.mId; 6764 } 6765 6766 @Override 6767 public boolean areAllItemsEnabled() { 6768 return false; 6769 } 6770 6771 @Override 6772 public boolean isEnabled(int position) { 6773 Container item = item(position); 6774 if (item == null) { 6775 return false; 6776 } 6777 return Container.OPTION_ENABLED == item.mEnabled; 6778 } 6779 } 6780 6781 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 6782 mMultiple = true; 6783 mSelectedArray = selected; 6784 6785 int length = array.length; 6786 mContainers = new Container[length]; 6787 for (int i = 0; i < length; i++) { 6788 mContainers[i] = new Container(); 6789 mContainers[i].mString = array[i]; 6790 mContainers[i].mEnabled = enabled[i]; 6791 mContainers[i].mId = i; 6792 } 6793 } 6794 6795 private InvokeListBox(String[] array, int[] enabled, int selection) { 6796 mSelection = selection; 6797 mMultiple = false; 6798 6799 int length = array.length; 6800 mContainers = new Container[length]; 6801 for (int i = 0; i < length; i++) { 6802 mContainers[i] = new Container(); 6803 mContainers[i].mString = array[i]; 6804 mContainers[i].mEnabled = enabled[i]; 6805 mContainers[i].mId = i; 6806 } 6807 } 6808 6809 /* 6810 * Whenever the data set changes due to filtering, this class ensures 6811 * that the checked item remains checked. 6812 */ 6813 private class SingleDataSetObserver extends DataSetObserver { 6814 private long mCheckedId; 6815 private ListView mListView; 6816 private Adapter mAdapter; 6817 6818 /* 6819 * Create a new observer. 6820 * @param id The ID of the item to keep checked. 6821 * @param l ListView for getting and clearing the checked states 6822 * @param a Adapter for getting the IDs 6823 */ 6824 public SingleDataSetObserver(long id, ListView l, Adapter a) { 6825 mCheckedId = id; 6826 mListView = l; 6827 mAdapter = a; 6828 } 6829 6830 public void onChanged() { 6831 // The filter may have changed which item is checked. Find the 6832 // item that the ListView thinks is checked. 6833 int position = mListView.getCheckedItemPosition(); 6834 long id = mAdapter.getItemId(position); 6835 if (mCheckedId != id) { 6836 // Clear the ListView's idea of the checked item, since 6837 // it is incorrect 6838 mListView.clearChoices(); 6839 // Search for mCheckedId. If it is in the filtered list, 6840 // mark it as checked 6841 int count = mAdapter.getCount(); 6842 for (int i = 0; i < count; i++) { 6843 if (mAdapter.getItemId(i) == mCheckedId) { 6844 mListView.setItemChecked(i, true); 6845 break; 6846 } 6847 } 6848 } 6849 } 6850 6851 public void onInvalidate() {} 6852 } 6853 6854 public void run() { 6855 final ListView listView = (ListView) LayoutInflater.from(mContext) 6856 .inflate(com.android.internal.R.layout.select_dialog, null); 6857 final MyArrayListAdapter adapter = new 6858 MyArrayListAdapter(mContext, mContainers, mMultiple); 6859 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 6860 .setView(listView).setCancelable(true) 6861 .setInverseBackgroundForced(true); 6862 6863 if (mMultiple) { 6864 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 6865 public void onClick(DialogInterface dialog, int which) { 6866 mWebViewCore.sendMessage( 6867 EventHub.LISTBOX_CHOICES, 6868 adapter.getCount(), 0, 6869 listView.getCheckedItemPositions()); 6870 }}); 6871 b.setNegativeButton(android.R.string.cancel, 6872 new DialogInterface.OnClickListener() { 6873 public void onClick(DialogInterface dialog, int which) { 6874 mWebViewCore.sendMessage( 6875 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6876 }}); 6877 } 6878 final AlertDialog dialog = b.create(); 6879 listView.setAdapter(adapter); 6880 listView.setFocusableInTouchMode(true); 6881 // There is a bug (1250103) where the checks in a ListView with 6882 // multiple items selected are associated with the positions, not 6883 // the ids, so the items do not properly retain their checks when 6884 // filtered. Do not allow filtering on multiple lists until 6885 // that bug is fixed. 6886 6887 listView.setTextFilterEnabled(!mMultiple); 6888 if (mMultiple) { 6889 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 6890 int length = mSelectedArray.length; 6891 for (int i = 0; i < length; i++) { 6892 listView.setItemChecked(mSelectedArray[i], true); 6893 } 6894 } else { 6895 listView.setOnItemClickListener(new OnItemClickListener() { 6896 public void onItemClick(AdapterView parent, View v, 6897 int position, long id) { 6898 mWebViewCore.sendMessage( 6899 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 6900 dialog.dismiss(); 6901 } 6902 }); 6903 if (mSelection != -1) { 6904 listView.setSelection(mSelection); 6905 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 6906 listView.setItemChecked(mSelection, true); 6907 DataSetObserver observer = new SingleDataSetObserver( 6908 adapter.getItemId(mSelection), listView, adapter); 6909 adapter.registerDataSetObserver(observer); 6910 } 6911 } 6912 dialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 6913 public void onCancel(DialogInterface dialog) { 6914 mWebViewCore.sendMessage( 6915 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 6916 } 6917 }); 6918 dialog.show(); 6919 } 6920 } 6921 6922 /* 6923 * Request a dropdown menu for a listbox with multiple selection. 6924 * 6925 * @param array Labels for the listbox. 6926 * @param enabledArray State for each element in the list. See static 6927 * integers in Container class. 6928 * @param selectedArray Which positions are initally selected. 6929 */ 6930 void requestListBox(String[] array, int[] enabledArray, int[] 6931 selectedArray) { 6932 mPrivateHandler.post( 6933 new InvokeListBox(array, enabledArray, selectedArray)); 6934 } 6935 6936 /* 6937 * Request a dropdown menu for a listbox with single selection or a single 6938 * <select> element. 6939 * 6940 * @param array Labels for the listbox. 6941 * @param enabledArray State for each element in the list. See static 6942 * integers in Container class. 6943 * @param selection Which position is initally selected. 6944 */ 6945 void requestListBox(String[] array, int[] enabledArray, int selection) { 6946 mPrivateHandler.post( 6947 new InvokeListBox(array, enabledArray, selection)); 6948 } 6949 6950 // called by JNI 6951 private void sendMoveFocus(int frame, int node) { 6952 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 6953 new WebViewCore.CursorData(frame, node, 0, 0)); 6954 } 6955 6956 // called by JNI 6957 private void sendMoveMouse(int frame, int node, int x, int y) { 6958 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 6959 new WebViewCore.CursorData(frame, node, x, y)); 6960 } 6961 6962 /* 6963 * Send a mouse move event to the webcore thread. 6964 * 6965 * @param removeFocus Pass true if the "mouse" cursor is now over a node 6966 * which wants key events, but it is not the focus. This 6967 * will make the visual appear as though nothing is in 6968 * focus. Remove the WebTextView, if present, and stop 6969 * drawing the blinking caret. 6970 * called by JNI 6971 */ 6972 private void sendMoveMouseIfLatest(boolean removeFocus) { 6973 if (removeFocus) { 6974 clearTextEntry(true); 6975 } 6976 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 6977 cursorData()); 6978 } 6979 6980 // called by JNI 6981 private void sendMotionUp(int touchGeneration, 6982 int frame, int node, int x, int y) { 6983 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6984 touchUpData.mMoveGeneration = touchGeneration; 6985 touchUpData.mFrame = frame; 6986 touchUpData.mNode = node; 6987 touchUpData.mX = x; 6988 touchUpData.mY = y; 6989 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6990 } 6991 6992 6993 private int getScaledMaxXScroll() { 6994 int width; 6995 if (mHeightCanMeasure == false) { 6996 width = getViewWidth() / 4; 6997 } else { 6998 Rect visRect = new Rect(); 6999 calcOurVisibleRect(visRect); 7000 width = visRect.width() / 2; 7001 } 7002 // FIXME the divisor should be retrieved from somewhere 7003 return viewToContentX(width); 7004 } 7005 7006 private int getScaledMaxYScroll() { 7007 int height; 7008 if (mHeightCanMeasure == false) { 7009 height = getViewHeight() / 4; 7010 } else { 7011 Rect visRect = new Rect(); 7012 calcOurVisibleRect(visRect); 7013 height = visRect.height() / 2; 7014 } 7015 // FIXME the divisor should be retrieved from somewhere 7016 // the closest thing today is hard-coded into ScrollView.java 7017 // (from ScrollView.java, line 363) int maxJump = height/2; 7018 return Math.round(height * mZoomManager.getInvScale()); 7019 } 7020 7021 /** 7022 * Called by JNI to invalidate view 7023 */ 7024 private void viewInvalidate() { 7025 invalidate(); 7026 } 7027 7028 /** 7029 * Pass the key directly to the page. This assumes that 7030 * nativePageShouldHandleShiftAndArrows() returned true. 7031 */ 7032 private void letPageHandleNavKey(int keyCode, long time, boolean down) { 7033 int keyEventAction; 7034 int eventHubAction; 7035 if (down) { 7036 keyEventAction = KeyEvent.ACTION_DOWN; 7037 eventHubAction = EventHub.KEY_DOWN; 7038 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7039 } else { 7040 keyEventAction = KeyEvent.ACTION_UP; 7041 eventHubAction = EventHub.KEY_UP; 7042 } 7043 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7044 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7045 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7046 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7047 , 0, 0, 0); 7048 mWebViewCore.sendMessage(eventHubAction, event); 7049 } 7050 7051 // return true if the key was handled 7052 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7053 long time) { 7054 if (mNativeClass == 0) { 7055 return false; 7056 } 7057 mLastCursorTime = time; 7058 mLastCursorBounds = nativeGetCursorRingBounds(); 7059 boolean keyHandled 7060 = nativeMoveCursor(keyCode, count, noScroll) == false; 7061 if (DebugFlags.WEB_VIEW) { 7062 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7063 + " mLastCursorTime=" + mLastCursorTime 7064 + " handled=" + keyHandled); 7065 } 7066 if (keyHandled == false || mHeightCanMeasure == false) { 7067 return keyHandled; 7068 } 7069 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7070 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7071 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7072 Rect visRect = new Rect(); 7073 calcOurVisibleRect(visRect); 7074 Rect outset = new Rect(visRect); 7075 int maxXScroll = visRect.width() / 2; 7076 int maxYScroll = visRect.height() / 2; 7077 outset.inset(-maxXScroll, -maxYScroll); 7078 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7079 return keyHandled; 7080 } 7081 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7082 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7083 maxXScroll); 7084 if (maxH > 0) { 7085 pinScrollBy(maxH, 0, true, 0); 7086 } else { 7087 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7088 -maxXScroll); 7089 if (maxH < 0) { 7090 pinScrollBy(maxH, 0, true, 0); 7091 } 7092 } 7093 if (mLastCursorBounds.isEmpty()) return keyHandled; 7094 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7095 return keyHandled; 7096 } 7097 if (DebugFlags.WEB_VIEW) { 7098 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7099 + contentCursorRingBounds); 7100 } 7101 requestRectangleOnScreen(viewCursorRingBounds); 7102 mUserScroll = true; 7103 return keyHandled; 7104 } 7105 7106 /** 7107 * Set the background color. It's white by default. Pass 7108 * zero to make the view transparent. 7109 * @param color the ARGB color described by Color.java 7110 */ 7111 public void setBackgroundColor(int color) { 7112 mBackgroundColor = color; 7113 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7114 } 7115 7116 public void debugDump() { 7117 nativeDebugDump(); 7118 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7119 } 7120 7121 /** 7122 * Draw the HTML page into the specified canvas. This call ignores any 7123 * view-specific zoom, scroll offset, or other changes. It does not draw 7124 * any view-specific chrome, such as progress or URL bars. 7125 * 7126 * @hide only needs to be accessible to Browser and testing 7127 */ 7128 public void drawPage(Canvas canvas) { 7129 nativeDraw(canvas, 0, 0, false); 7130 } 7131 7132 /** 7133 * Set the time to wait between passing touches to WebCore. See also the 7134 * TOUCH_SENT_INTERVAL member for further discussion. 7135 * 7136 * @hide This is only used by the DRT test application. 7137 */ 7138 public void setTouchInterval(int interval) { 7139 mCurrentTouchInterval = interval; 7140 } 7141 7142 /** 7143 * Update our cache with updatedText. 7144 * @param updatedText The new text to put in our cache. 7145 */ 7146 /* package */ void updateCachedTextfield(String updatedText) { 7147 // Also place our generation number so that when we look at the cache 7148 // we recognize that it is up to date. 7149 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7150 } 7151 7152 private native int nativeCacheHitFramePointer(); 7153 private native Rect nativeCacheHitNodeBounds(); 7154 private native int nativeCacheHitNodePointer(); 7155 /* package */ native void nativeClearCursor(); 7156 private native void nativeCreate(int ptr); 7157 private native int nativeCursorFramePointer(); 7158 private native Rect nativeCursorNodeBounds(); 7159 private native int nativeCursorNodePointer(); 7160 /* package */ native boolean nativeCursorMatchesFocus(); 7161 private native boolean nativeCursorIntersects(Rect visibleRect); 7162 private native boolean nativeCursorIsAnchor(); 7163 private native boolean nativeCursorIsTextInput(); 7164 private native Point nativeCursorPosition(); 7165 private native String nativeCursorText(); 7166 /** 7167 * Returns true if the native cursor node says it wants to handle key events 7168 * (ala plugins). This can only be called if mNativeClass is non-zero! 7169 */ 7170 private native boolean nativeCursorWantsKeyEvents(); 7171 private native void nativeDebugDump(); 7172 private native void nativeDestroy(); 7173 7174 /** 7175 * Draw the picture set with a background color and extra. If 7176 * "splitIfNeeded" is true and the return value is not 0, the return value 7177 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 7178 * native allocation can be freed. 7179 */ 7180 private native int nativeDraw(Canvas canvas, int color, int extra, 7181 boolean splitIfNeeded); 7182 private native void nativeDumpDisplayTree(String urlOrNull); 7183 private native boolean nativeEvaluateLayersAnimations(); 7184 private native void nativeExtendSelection(int x, int y); 7185 private native int nativeFindAll(String findLower, String findUpper); 7186 private native void nativeFindNext(boolean forward); 7187 /* package */ native int nativeFocusCandidateFramePointer(); 7188 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7189 /* package */ native boolean nativeFocusCandidateIsPassword(); 7190 private native boolean nativeFocusCandidateIsRtlText(); 7191 private native boolean nativeFocusCandidateIsTextInput(); 7192 /* package */ native int nativeFocusCandidateMaxLength(); 7193 /* package */ native String nativeFocusCandidateName(); 7194 private native Rect nativeFocusCandidateNodeBounds(); 7195 /* package */ native int nativeFocusCandidatePointer(); 7196 private native String nativeFocusCandidateText(); 7197 private native int nativeFocusCandidateTextSize(); 7198 /** 7199 * Returns an integer corresponding to WebView.cpp::type. 7200 * See WebTextView.setType() 7201 */ 7202 private native int nativeFocusCandidateType(); 7203 private native boolean nativeFocusIsPlugin(); 7204 private native Rect nativeFocusNodeBounds(); 7205 /* package */ native int nativeFocusNodePointer(); 7206 private native Rect nativeGetCursorRingBounds(); 7207 private native String nativeGetSelection(); 7208 private native boolean nativeHasCursorNode(); 7209 private native boolean nativeHasFocusNode(); 7210 private native void nativeHideCursor(); 7211 private native boolean nativeHitSelection(int x, int y); 7212 private native String nativeImageURI(int x, int y); 7213 private native void nativeInstrumentReport(); 7214 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7215 // return true if the page has been scrolled 7216 private native boolean nativeMotionUp(int x, int y, int slop); 7217 // returns false if it handled the key 7218 private native boolean nativeMoveCursor(int keyCode, int count, 7219 boolean noScroll); 7220 private native int nativeMoveGeneration(); 7221 private native void nativeMoveSelection(int x, int y); 7222 /** 7223 * @return true if the page should get the shift and arrow keys, rather 7224 * than select text/navigation. 7225 * 7226 * If the focus is a plugin, or if the focus and cursor match and are 7227 * a contentEditable element, then the page should handle these keys. 7228 */ 7229 private native boolean nativePageShouldHandleShiftAndArrows(); 7230 private native boolean nativePointInNavCache(int x, int y, int slop); 7231 // Like many other of our native methods, you must make sure that 7232 // mNativeClass is not null before calling this method. 7233 private native void nativeRecordButtons(boolean focused, 7234 boolean pressed, boolean invalidate); 7235 private native void nativeResetSelection(); 7236 private native void nativeSelectAll(); 7237 private native void nativeSelectBestAt(Rect rect); 7238 private native int nativeSelectionX(); 7239 private native int nativeSelectionY(); 7240 private native int nativeFindIndex(); 7241 private native void nativeSetExtendSelection(); 7242 private native void nativeSetFindIsEmpty(); 7243 private native void nativeSetFindIsUp(boolean isUp); 7244 private native void nativeSetFollowedLink(boolean followed); 7245 private native void nativeSetHeightCanMeasure(boolean measure); 7246 private native void nativeSetBaseLayer(int layer); 7247 private native void nativeReplaceBaseContent(int content); 7248 private native void nativeCopyBaseContentToPicture(Picture pict); 7249 private native boolean nativeHasContent(); 7250 private native void nativeSetSelectionPointer(boolean set, 7251 float scale, int x, int y); 7252 private native boolean nativeStartSelection(int x, int y); 7253 private native Rect nativeSubtractLayers(Rect content); 7254 private native int nativeTextGeneration(); 7255 // Never call this version except by updateCachedTextfield(String) - 7256 // we always want to pass in our generation number. 7257 private native void nativeUpdateCachedTextfield(String updatedText, 7258 int generation); 7259 private native boolean nativeWordSelection(int x, int y); 7260 // return NO_LEFTEDGE means failure. 7261 static final int NO_LEFTEDGE = -1; 7262 native int nativeGetBlockLeftEdge(int x, int y, float scale); 7263 7264 // Returns a pointer to the scrollable LayerAndroid at the given point. 7265 private native int nativeScrollableLayer(int x, int y); 7266 private native boolean nativeScrollLayer(int layer, int dx, int dy); 7267} 7268