WebView.java revision ffcc49eb420e70e57e7bcef28a01e4c04ba8ab77
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.BroadcastReceiver; 22import android.content.ClipboardManager; 23import android.content.Context; 24import android.content.DialogInterface; 25import android.content.IntentFilter; 26import android.content.DialogInterface.OnCancelListener; 27import android.content.pm.PackageInfo; 28import android.content.pm.PackageManager; 29import android.content.Intent; 30import android.database.DataSetObserver; 31import android.graphics.Bitmap; 32import android.graphics.Canvas; 33import android.graphics.Color; 34import android.graphics.CornerPathEffect; 35import android.graphics.DrawFilter; 36import android.graphics.Paint; 37import android.graphics.PaintFlagsDrawFilter; 38import android.graphics.Picture; 39import android.graphics.Point; 40import android.graphics.Rect; 41import android.graphics.RectF; 42import android.graphics.Region; 43import android.graphics.drawable.Drawable; 44import android.net.Uri; 45import android.net.http.SslCertificate; 46import android.os.AsyncTask; 47import android.os.Bundle; 48import android.os.Handler; 49import android.os.Message; 50import android.provider.Settings; 51import android.speech.tts.TextToSpeech; 52import android.text.Selection; 53import android.text.Spannable; 54import android.util.AttributeSet; 55import android.util.EventLog; 56import android.util.Log; 57import android.util.TypedValue; 58import android.view.Gravity; 59import android.view.KeyEvent; 60import android.view.LayoutInflater; 61import android.view.MotionEvent; 62import android.view.ScaleGestureDetector; 63import android.view.SoundEffectConstants; 64import android.view.VelocityTracker; 65import android.view.View; 66import android.view.ViewConfiguration; 67import android.view.ViewGroup; 68import android.view.ViewTreeObserver; 69import android.view.accessibility.AccessibilityManager; 70import android.view.inputmethod.EditorInfo; 71import android.view.inputmethod.InputConnection; 72import android.view.inputmethod.InputMethodManager; 73import android.webkit.WebTextView.AutoCompleteAdapter; 74import android.webkit.WebViewCore.EventHub; 75import android.webkit.WebViewCore.TouchEventData; 76import android.webkit.WebViewCore.TouchHighlightData; 77import android.widget.AbsoluteLayout; 78import android.widget.Adapter; 79import android.widget.AdapterView; 80import android.widget.AdapterView.OnItemClickListener; 81import android.widget.ArrayAdapter; 82import android.widget.CheckedTextView; 83import android.widget.LinearLayout; 84import android.widget.ListView; 85import android.widget.Scroller; 86import android.widget.Toast; 87 88import junit.framework.Assert; 89 90import java.io.File; 91import java.io.FileInputStream; 92import java.io.FileNotFoundException; 93import java.io.FileOutputStream; 94import java.net.URLDecoder; 95import java.util.ArrayList; 96import java.util.HashMap; 97import java.util.HashSet; 98import java.util.List; 99import java.util.Map; 100import java.util.Set; 101import java.util.regex.Matcher; 102import java.util.regex.Pattern; 103 104/** 105 * <p>A View that displays web pages. This class is the basis upon which you 106 * can roll your own web browser or simply display some online content within your Activity. 107 * It uses the WebKit rendering engine to display 108 * web pages and includes methods to navigate forward and backward 109 * through a history, zoom in and out, perform text searches and more.</p> 110 * <p>To enable the built-in zoom, set 111 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 112 * (introduced in API version 3). 113 * <p>Note that, in order for your Activity to access the Internet and load web pages 114 * in a WebView, you must add the {@code INTERNET} permissions to your 115 * Android Manifest file:</p> 116 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 117 * 118 * <p>This must be a child of the <a 119 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 120 * element.</p> 121 * 122 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 123 * tutorial</a>.</p> 124 * 125 * <h3>Basic usage</h3> 126 * 127 * <p>By default, a WebView provides no browser-like widgets, does not 128 * enable JavaScript and web page errors are ignored. If your goal is only 129 * to display some HTML as a part of your UI, this is probably fine; 130 * the user won't need to interact with the web page beyond reading 131 * it, and the web page won't need to interact with the user. If you 132 * actually want a full-blown web browser, then you probably want to 133 * invoke the Browser application with a URL Intent rather than show it 134 * with a WebView. For example: 135 * <pre> 136 * Uri uri = Uri.parse("http://www.example.com"); 137 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 138 * startActivity(intent); 139 * </pre> 140 * <p>See {@link android.content.Intent} for more information.</p> 141 * 142 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 143 * or set the entire Activity window as a WebView during {@link 144 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 145 * <pre class="prettyprint"> 146 * WebView webview = new WebView(this); 147 * setContentView(webview); 148 * </pre> 149 * 150 * <p>Then load the desired web page:</p> 151 * <pre> 152 * // Simplest usage: note that an exception will NOT be thrown 153 * // if there is an error loading this page (see below). 154 * webview.loadUrl("http://slashdot.org/"); 155 * 156 * // OR, you can also load from an HTML string: 157 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 158 * webview.loadData(summary, "text/html", "utf-8"); 159 * // ... although note that there are restrictions on what this HTML can do. 160 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 161 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 162 * </pre> 163 * 164 * <p>A WebView has several customization points where you can add your 165 * own behavior. These are:</p> 166 * 167 * <ul> 168 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 169 * This class is called when something that might impact a 170 * browser UI happens, for instance, progress updates and 171 * JavaScript alerts are sent here (see <a 172 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 173 * </li> 174 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 175 * It will be called when things happen that impact the 176 * rendering of the content, eg, errors or form submissions. You 177 * can also intercept URL loading here (via {@link 178 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 179 * shouldOverrideUrlLoading()}).</li> 180 * <li>Modifying the {@link android.webkit.WebSettings}, such as 181 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 182 * setJavaScriptEnabled()}. </li> 183 * <li>Adding JavaScript-to-Java interfaces with the {@link 184 * android.webkit.WebView#addJavascriptInterface} method. 185 * This lets you bind Java objects into the WebView so they can be 186 * controlled from the web pages JavaScript.</li> 187 * </ul> 188 * 189 * <p>Here's a more complicated example, showing error handling, 190 * settings, and progress notification:</p> 191 * 192 * <pre class="prettyprint"> 193 * // Let's display the progress in the activity title bar, like the 194 * // browser app does. 195 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 196 * 197 * webview.getSettings().setJavaScriptEnabled(true); 198 * 199 * final Activity activity = this; 200 * webview.setWebChromeClient(new WebChromeClient() { 201 * public void onProgressChanged(WebView view, int progress) { 202 * // Activities and WebViews measure progress with different scales. 203 * // The progress meter will automatically disappear when we reach 100% 204 * activity.setProgress(progress * 1000); 205 * } 206 * }); 207 * webview.setWebViewClient(new WebViewClient() { 208 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 209 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 210 * } 211 * }); 212 * 213 * webview.loadUrl("http://slashdot.org/"); 214 * </pre> 215 * 216 * <h3>Cookie and window management</h3> 217 * 218 * <p>For obvious security reasons, your application has its own 219 * cache, cookie store etc.—it does not share the Browser 220 * application's data. Cookies are managed on a separate thread, so 221 * operations like index building don't block the UI 222 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 223 * if you want to use cookies in your application. 224 * </p> 225 * 226 * <p>By default, requests by the HTML to open new windows are 227 * ignored. This is true whether they be opened by JavaScript or by 228 * the target attribute on a link. You can customize your 229 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 230 * and render them in whatever manner you want.</p> 231 * 232 * <p>The standard behavior for an Activity is to be destroyed and 233 * recreated when the device orientation or any other configuration changes. This will cause 234 * the WebView to reload the current page. If you don't want that, you 235 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 236 * changes, and then just leave the WebView alone. It'll automatically 237 * re-orient itself as appropriate. Read <a 238 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 239 * more information about how to handle configuration changes during runtime.</p> 240 * 241 * 242 * <h3>Building web pages to support different screen densities</h3> 243 * 244 * <p>The screen density of a device is based on the screen resolution. A screen with low density 245 * has fewer available pixels per inch, where a screen with high density 246 * has more — sometimes significantly more — pixels per inch. The density of a 247 * screen is important because, other things being equal, a UI element (such as a button) whose 248 * height and width are defined in terms of screen pixels will appear larger on the lower density 249 * screen and smaller on the higher density screen. 250 * For simplicity, Android collapses all actual screen densities into three generalized densities: 251 * high, medium, and low.</p> 252 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 253 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 254 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 255 * are bigger). 256 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 257 * you (as a web developer) target screens with different screen densities.</p> 258 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 259 * <ul> 260 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 261 * default scaling factor used for the current device. For example, if the value of {@code 262 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 263 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 264 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 265 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 266 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 267 * (discussed below), then you can stop this default scaling behavior.</li> 268 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 269 * densities for which this style sheet is to be used. The corresponding value should be either 270 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 271 * density, or high density screens, respectively. For example: 272 * <pre> 273 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 274 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 275 * which is the high density pixel ratio.</p> 276 * </li> 277 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 278 * this to specify the target density for which the web page is designed, using the following 279 * values: 280 * <ul> 281 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 282 * occurs.</li> 283 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 284 * as appropriate.</li> 285 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 286 * low density screens scale down. This is also the default behavior.</li> 287 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 288 * as appropriate.</li> 289 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 290 * values are 70-400).</li> 291 * </ul> 292 * <p>Here's an example meta tag to specify the target density:</p> 293 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 294 * </ul> 295 * <p>If you want to modify your web page for different densities, by using the {@code 296 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 297 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 298 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 299 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 300 * 301 * 302 */ 303@Widget 304public class WebView extends AbsoluteLayout 305 implements ViewTreeObserver.OnGlobalFocusChangeListener, 306 ViewGroup.OnHierarchyChangeListener { 307 308 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 309 // the screen all-the-time. Good for profiling our drawing code 310 static private final boolean AUTO_REDRAW_HACK = false; 311 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 312 private boolean mAutoRedraw; 313 314 // Reference to the AlertDialog displayed by InvokeListBox. 315 // It's used to dismiss the dialog in destroy if not done before. 316 private AlertDialog mListBoxDialog = null; 317 318 static final String LOGTAG = "webview"; 319 320 private ZoomManager mZoomManager; 321 322 private Rect mGLRectViewport; 323 324 /** 325 * Transportation object for returning WebView across thread boundaries. 326 */ 327 public class WebViewTransport { 328 private WebView mWebview; 329 330 /** 331 * Set the WebView to the transportation object. 332 * @param webview The WebView to transport. 333 */ 334 public synchronized void setWebView(WebView webview) { 335 mWebview = webview; 336 } 337 338 /** 339 * Return the WebView object. 340 * @return WebView The transported WebView object. 341 */ 342 public synchronized WebView getWebView() { 343 return mWebview; 344 } 345 } 346 347 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 348 private final CallbackProxy mCallbackProxy; 349 350 private final WebViewDatabase mDatabase; 351 352 // SSL certificate for the main top-level page (if secure) 353 private SslCertificate mCertificate; 354 355 // Native WebView pointer that is 0 until the native object has been 356 // created. 357 private int mNativeClass; 358 // This would be final but it needs to be set to null when the WebView is 359 // destroyed. 360 private WebViewCore mWebViewCore; 361 // Handler for dispatching UI messages. 362 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 363 private WebTextView mWebTextView; 364 // Used to ignore changes to webkit text that arrives to the UI side after 365 // more key events. 366 private int mTextGeneration; 367 368 /* package */ void incrementTextGeneration() { mTextGeneration++; } 369 370 // Used by WebViewCore to create child views. 371 /* package */ final ViewManager mViewManager; 372 373 // Used to display in full screen mode 374 PluginFullScreenHolder mFullScreenHolder; 375 376 /** 377 * Position of the last touch event. 378 */ 379 private float mLastTouchX; 380 private float mLastTouchY; 381 382 /** 383 * Time of the last touch event. 384 */ 385 private long mLastTouchTime; 386 387 /** 388 * Time of the last time sending touch event to WebViewCore 389 */ 390 private long mLastSentTouchTime; 391 392 /** 393 * The minimum elapsed time before sending another ACTION_MOVE event to 394 * WebViewCore. This really should be tuned for each type of the devices. 395 * For example in Google Map api test case, it takes Dream device at least 396 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 397 * triggering the layout and drawing the picture. While the same process 398 * takes 60+ms on the current high speed device. If we make 399 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 400 * to WebViewCore queue and the real layout and draw events will be pushed 401 * to further, which slows down the refresh rate. Choose 50 to favor the 402 * current high speed devices. For Dream like devices, 100 is a better 403 * choice. Maybe make this in the buildspec later. 404 */ 405 private static final int TOUCH_SENT_INTERVAL = 50; 406 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 407 408 /** 409 * Helper class to get velocity for fling 410 */ 411 VelocityTracker mVelocityTracker; 412 private int mMaximumFling; 413 private float mLastVelocity; 414 private float mLastVelX; 415 private float mLastVelY; 416 417 // A pointer to the native scrollable layer when dragging layers. Only 418 // valid when mTouchMode is TOUCH_DRAG_LAYER_MODE. 419 private int mScrollingLayer; 420 421 // only trigger accelerated fling if the new velocity is at least 422 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 423 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 424 425 /** 426 * Touch mode 427 */ 428 private int mTouchMode = TOUCH_DONE_MODE; 429 private static final int TOUCH_INIT_MODE = 1; 430 private static final int TOUCH_DRAG_START_MODE = 2; 431 private static final int TOUCH_DRAG_MODE = 3; 432 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 433 private static final int TOUCH_SHORTPRESS_MODE = 5; 434 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 435 private static final int TOUCH_DONE_MODE = 7; 436 private static final int TOUCH_PINCH_DRAG = 8; 437 private static final int TOUCH_DRAG_LAYER_MODE = 9; 438 439 // Whether to forward the touch events to WebCore 440 private boolean mForwardTouchEvents = false; 441 442 // Whether to prevent default during touch. The initial value depends on 443 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 444 // for touch down. Otherwise UI will wait for the answer of the first 445 // confirmed move before taking over the control. 446 private static final int PREVENT_DEFAULT_NO = 0; 447 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 448 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 449 private static final int PREVENT_DEFAULT_YES = 3; 450 private static final int PREVENT_DEFAULT_IGNORE = 4; 451 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 452 453 // true when the touch movement exceeds the slop 454 private boolean mConfirmMove; 455 456 // if true, touch events will be first processed by WebCore, if prevent 457 // default is not set, the UI will continue handle them. 458 private boolean mDeferTouchProcess; 459 460 // if true, multi-touch events will be passed to webkit directly before UI 461 private boolean mDeferMultitouch = false; 462 463 // to avoid interfering with the current touch events, track them 464 // separately. Currently no snapping or fling in the deferred process mode 465 private int mDeferTouchMode = TOUCH_DONE_MODE; 466 private float mLastDeferTouchX; 467 private float mLastDeferTouchY; 468 469 // To keep track of whether the current drag was initiated by a WebTextView, 470 // so that we know not to hide the cursor 471 boolean mDragFromTextInput; 472 473 // Whether or not to draw the cursor ring. 474 private boolean mDrawCursorRing = true; 475 476 // true if onPause has been called (and not onResume) 477 private boolean mIsPaused; 478 479 /** 480 * Customizable constant 481 */ 482 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 483 private int mTouchSlopSquare; 484 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 485 private int mDoubleTapSlopSquare; 486 // pre-computed density adjusted navigation slop 487 private int mNavSlop; 488 // This should be ViewConfiguration.getTapTimeout() 489 // But system time out is 100ms, which is too short for the browser. 490 // In the browser, if it switches out of tap too soon, jump tap won't work. 491 private static final int TAP_TIMEOUT = 200; 492 // This should be ViewConfiguration.getLongPressTimeout() 493 // But system time out is 500ms, which is too short for the browser. 494 // With a short timeout, it's difficult to treat trigger a short press. 495 private static final int LONG_PRESS_TIMEOUT = 1000; 496 // needed to avoid flinging after a pause of no movement 497 private static final int MIN_FLING_TIME = 250; 498 // draw unfiltered after drag is held without movement 499 private static final int MOTIONLESS_TIME = 100; 500 // The amount of content to overlap between two screens when going through 501 // pages with the space bar, in pixels. 502 private static final int PAGE_SCROLL_OVERLAP = 24; 503 504 /** 505 * These prevent calling requestLayout if either dimension is fixed. This 506 * depends on the layout parameters and the measure specs. 507 */ 508 boolean mWidthCanMeasure; 509 boolean mHeightCanMeasure; 510 511 // Remember the last dimensions we sent to the native side so we can avoid 512 // sending the same dimensions more than once. 513 int mLastWidthSent; 514 int mLastHeightSent; 515 516 private int mContentWidth; // cache of value from WebViewCore 517 private int mContentHeight; // cache of value from WebViewCore 518 519 // Need to have the separate control for horizontal and vertical scrollbar 520 // style than the View's single scrollbar style 521 private boolean mOverlayHorizontalScrollbar = true; 522 private boolean mOverlayVerticalScrollbar = false; 523 524 // our standard speed. this way small distances will be traversed in less 525 // time than large distances, but we cap the duration, so that very large 526 // distances won't take too long to get there. 527 private static final int STD_SPEED = 480; // pixels per second 528 // time for the longest scroll animation 529 private static final int MAX_DURATION = 750; // milliseconds 530 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 531 private Scroller mScroller; 532 533 private boolean mWrapContent; 534 private static final int MOTIONLESS_FALSE = 0; 535 private static final int MOTIONLESS_PENDING = 1; 536 private static final int MOTIONLESS_TRUE = 2; 537 private static final int MOTIONLESS_IGNORE = 3; 538 private int mHeldMotionless; 539 540 // An instance for injecting accessibility in WebViews with disabled 541 // JavaScript or ones for which no accessibility script exists 542 private AccessibilityInjector mAccessibilityInjector; 543 544 // flag indicating if accessibility script is injected so we 545 // know to handle Shift and arrows natively first 546 private boolean mAccessibilityScriptInjected; 547 548 // the color used to highlight the touch rectangles 549 private static final int mHightlightColor = 0x33000000; 550 // the round corner for the highlight path 551 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 552 // the region indicating where the user touched on the screen 553 private Region mTouchHighlightRegion = new Region(); 554 // the paint for the touch highlight 555 private Paint mTouchHightlightPaint; 556 // debug only 557 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 558 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 559 private Paint mTouchCrossHairColor; 560 private int mTouchHighlightX; 561 private int mTouchHighlightY; 562 563 /* 564 * Private message ids 565 */ 566 private static final int REMEMBER_PASSWORD = 1; 567 private static final int NEVER_REMEMBER_PASSWORD = 2; 568 private static final int SWITCH_TO_SHORTPRESS = 3; 569 private static final int SWITCH_TO_LONGPRESS = 4; 570 private static final int RELEASE_SINGLE_TAP = 5; 571 private static final int REQUEST_FORM_DATA = 6; 572 private static final int RESUME_WEBCORE_PRIORITY = 7; 573 private static final int DRAG_HELD_MOTIONLESS = 8; 574 private static final int AWAKEN_SCROLL_BARS = 9; 575 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 576 577 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 578 private static final int LAST_PRIVATE_MSG_ID = PREVENT_DEFAULT_TIMEOUT; 579 580 /* 581 * Package message ids 582 */ 583 //! arg1=x, arg2=y 584 static final int SCROLL_TO_MSG_ID = 101; 585 static final int SCROLL_BY_MSG_ID = 102; 586 //! arg1=x, arg2=y 587 static final int SPAWN_SCROLL_TO_MSG_ID = 103; 588 //! arg1=x, arg2=y 589 static final int SYNC_SCROLL_TO_MSG_ID = 104; 590 static final int NEW_PICTURE_MSG_ID = 105; 591 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 592 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 593 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 594 static final int UPDATE_ZOOM_RANGE = 109; 595 static final int UNHANDLED_NAV_KEY = 110; 596 static final int CLEAR_TEXT_ENTRY = 111; 597 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 598 static final int SHOW_RECT_MSG_ID = 113; 599 static final int LONG_PRESS_CENTER = 114; 600 static final int PREVENT_TOUCH_ID = 115; 601 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 602 // obj=Rect in doc coordinates 603 static final int INVAL_RECT_MSG_ID = 117; 604 static final int REQUEST_KEYBOARD = 118; 605 static final int DO_MOTION_UP = 119; 606 static final int SHOW_FULLSCREEN = 120; 607 static final int HIDE_FULLSCREEN = 121; 608 static final int DOM_FOCUS_CHANGED = 122; 609 static final int REPLACE_BASE_CONTENT = 123; 610 static final int FORM_DID_BLUR = 124; 611 static final int RETURN_LABEL = 125; 612 static final int FIND_AGAIN = 126; 613 static final int CENTER_FIT_RECT = 127; 614 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 615 static final int SET_SCROLLBAR_MODES = 129; 616 static final int SELECTION_STRING_CHANGED = 130; 617 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 618 static final int SAVE_WEBARCHIVE_FINISHED = 132; 619 620 static final int SET_AUTOFILLABLE = 133; 621 622 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 623 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 624 625 static final String[] HandlerPrivateDebugString = { 626 "REMEMBER_PASSWORD", // = 1; 627 "NEVER_REMEMBER_PASSWORD", // = 2; 628 "SWITCH_TO_SHORTPRESS", // = 3; 629 "SWITCH_TO_LONGPRESS", // = 4; 630 "RELEASE_SINGLE_TAP", // = 5; 631 "REQUEST_FORM_DATA", // = 6; 632 "RESUME_WEBCORE_PRIORITY", // = 7; 633 "DRAG_HELD_MOTIONLESS", // = 8; 634 "AWAKEN_SCROLL_BARS", // = 9; 635 "PREVENT_DEFAULT_TIMEOUT" // = 10; 636 }; 637 638 static final String[] HandlerPackageDebugString = { 639 "SCROLL_TO_MSG_ID", // = 101; 640 "SCROLL_BY_MSG_ID", // = 102; 641 "SPAWN_SCROLL_TO_MSG_ID", // = 103; 642 "SYNC_SCROLL_TO_MSG_ID", // = 104; 643 "NEW_PICTURE_MSG_ID", // = 105; 644 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 645 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 646 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 647 "UPDATE_ZOOM_RANGE", // = 109; 648 "UNHANDLED_NAV_KEY", // = 110; 649 "CLEAR_TEXT_ENTRY", // = 111; 650 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 651 "SHOW_RECT_MSG_ID", // = 113; 652 "LONG_PRESS_CENTER", // = 114; 653 "PREVENT_TOUCH_ID", // = 115; 654 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 655 "INVAL_RECT_MSG_ID", // = 117; 656 "REQUEST_KEYBOARD", // = 118; 657 "DO_MOTION_UP", // = 119; 658 "SHOW_FULLSCREEN", // = 120; 659 "HIDE_FULLSCREEN", // = 121; 660 "DOM_FOCUS_CHANGED", // = 122; 661 "REPLACE_BASE_CONTENT", // = 123; 662 "FORM_DID_BLUR", // = 124; 663 "RETURN_LABEL", // = 125; 664 "FIND_AGAIN", // = 126; 665 "CENTER_FIT_RECT", // = 127; 666 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 667 "SET_SCROLLBAR_MODES", // = 129; 668 "SELECTION_STRING_CHANGED", // = 130; 669 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 670 "SAVE_WEBARCHIVE_FINISHED", // = 132; 671 "SET_AUTOFILLABLE" // = 133; 672 }; 673 674 // If the site doesn't use the viewport meta tag to specify the viewport, 675 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 676 static final int DEFAULT_VIEWPORT_WIDTH = 980; 677 678 // normally we try to fit the content to the minimum preferred width 679 // calculated by the Webkit. To avoid the bad behavior when some site's 680 // minimum preferred width keeps growing when changing the viewport width or 681 // the minimum preferred width is huge, an upper limit is needed. 682 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 683 684 // initial scale in percent. 0 means using default. 685 private int mInitialScaleInPercent = 0; 686 687 private boolean mUserScroll = false; 688 689 private int mSnapScrollMode = SNAP_NONE; 690 private static final int SNAP_NONE = 0; 691 private static final int SNAP_LOCK = 1; // not a separate state 692 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 693 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 694 private boolean mSnapPositive; 695 696 // keep these in sync with their counterparts in WebView.cpp 697 private static final int DRAW_EXTRAS_NONE = 0; 698 private static final int DRAW_EXTRAS_FIND = 1; 699 private static final int DRAW_EXTRAS_SELECTION = 2; 700 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 701 702 // keep this in sync with WebCore:ScrollbarMode in WebKit 703 private static final int SCROLLBAR_AUTO = 0; 704 private static final int SCROLLBAR_ALWAYSOFF = 1; 705 // as we auto fade scrollbar, this is ignored. 706 private static final int SCROLLBAR_ALWAYSON = 2; 707 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 708 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 709 710 // constants for determining script injection strategy 711 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 712 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 713 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 714 715 // the alias via which accessibility JavaScript interface is exposed 716 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 717 718 // JavaScript to inject the script chooser which will 719 // pick the right script for the current URL 720 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 721 "javascript:(function() {" + 722 " var chooser = document.createElement('script');" + 723 " chooser.type = 'text/javascript';" + 724 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 725 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 726 " })();"; 727 728 // Regular expression that matches the "axs" URL parameter. 729 // The value of 0 means the accessibility script is opted out 730 // The value of 1 means the accessibility script is already injected 731 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 732 733 // variable to cache the above pattern in case accessibility is enabled. 734 private Pattern mMatchAxsUrlParameterPattern; 735 736 // Used to match key downs and key ups 737 private boolean mGotKeyDown; 738 739 /* package */ static boolean mLogEvent = true; 740 741 // for event log 742 private long mLastTouchUpTime = 0; 743 744 private int mAutoFillQueryId = WebTextView.FORM_NOT_AUTOFILLABLE; 745 746 /** 747 * URI scheme for telephone number 748 */ 749 public static final String SCHEME_TEL = "tel:"; 750 /** 751 * URI scheme for email address 752 */ 753 public static final String SCHEME_MAILTO = "mailto:"; 754 /** 755 * URI scheme for map address 756 */ 757 public static final String SCHEME_GEO = "geo:0,0?q="; 758 759 private int mBackgroundColor = Color.WHITE; 760 761 // Used to notify listeners of a new picture. 762 private PictureListener mPictureListener; 763 /** 764 * Interface to listen for new pictures as they change. 765 */ 766 public interface PictureListener { 767 /** 768 * Notify the listener that the picture has changed. 769 * @param view The WebView that owns the picture. 770 * @param picture The new picture. 771 */ 772 public void onNewPicture(WebView view, Picture picture); 773 } 774 775 // FIXME: Want to make this public, but need to change the API file. 776 public /*static*/ class HitTestResult { 777 /** 778 * Default HitTestResult, where the target is unknown 779 */ 780 public static final int UNKNOWN_TYPE = 0; 781 /** 782 * HitTestResult for hitting a HTML::a tag 783 */ 784 public static final int ANCHOR_TYPE = 1; 785 /** 786 * HitTestResult for hitting a phone number 787 */ 788 public static final int PHONE_TYPE = 2; 789 /** 790 * HitTestResult for hitting a map address 791 */ 792 public static final int GEO_TYPE = 3; 793 /** 794 * HitTestResult for hitting an email address 795 */ 796 public static final int EMAIL_TYPE = 4; 797 /** 798 * HitTestResult for hitting an HTML::img tag 799 */ 800 public static final int IMAGE_TYPE = 5; 801 /** 802 * HitTestResult for hitting a HTML::a tag which contains HTML::img 803 */ 804 public static final int IMAGE_ANCHOR_TYPE = 6; 805 /** 806 * HitTestResult for hitting a HTML::a tag with src=http 807 */ 808 public static final int SRC_ANCHOR_TYPE = 7; 809 /** 810 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 811 */ 812 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 813 /** 814 * HitTestResult for hitting an edit text area 815 */ 816 public static final int EDIT_TEXT_TYPE = 9; 817 818 private int mType; 819 private String mExtra; 820 821 HitTestResult() { 822 mType = UNKNOWN_TYPE; 823 } 824 825 private void setType(int type) { 826 mType = type; 827 } 828 829 private void setExtra(String extra) { 830 mExtra = extra; 831 } 832 833 public int getType() { 834 return mType; 835 } 836 837 public String getExtra() { 838 return mExtra; 839 } 840 } 841 842 /** 843 * Construct a new WebView with a Context object. 844 * @param context A Context object used to access application assets. 845 */ 846 public WebView(Context context) { 847 this(context, null); 848 } 849 850 /** 851 * Construct a new WebView with layout parameters. 852 * @param context A Context object used to access application assets. 853 * @param attrs An AttributeSet passed to our parent. 854 */ 855 public WebView(Context context, AttributeSet attrs) { 856 this(context, attrs, com.android.internal.R.attr.webViewStyle); 857 } 858 859 /** 860 * Construct a new WebView with layout parameters and a default style. 861 * @param context A Context object used to access application assets. 862 * @param attrs An AttributeSet passed to our parent. 863 * @param defStyle The default style resource ID. 864 */ 865 public WebView(Context context, AttributeSet attrs, int defStyle) { 866 this(context, attrs, defStyle, false); 867 } 868 869 /** 870 * Construct a new WebView with layout parameters and a default style. 871 * @param context A Context object used to access application assets. 872 * @param attrs An AttributeSet passed to our parent. 873 * @param defStyle The default style resource ID. 874 */ 875 public WebView(Context context, AttributeSet attrs, int defStyle, 876 boolean privateBrowsing) { 877 this(context, attrs, defStyle, null, privateBrowsing); 878 } 879 880 /** 881 * Construct a new WebView with layout parameters, a default style and a set 882 * of custom Javscript interfaces to be added to the WebView at initialization 883 * time. This guarantees that these interfaces will be available when the JS 884 * context is initialized. 885 * @param context A Context object used to access application assets. 886 * @param attrs An AttributeSet passed to our parent. 887 * @param defStyle The default style resource ID. 888 * @param javascriptInterfaces is a Map of interface names, as keys, and 889 * object implementing those interfaces, as values. 890 * @hide pending API council approval. 891 */ 892 protected WebView(Context context, AttributeSet attrs, int defStyle, 893 Map<String, Object> javascriptInterfaces, boolean privateBrowsing) { 894 super(context, attrs, defStyle); 895 896 if (AccessibilityManager.getInstance(context).isEnabled()) { 897 if (javascriptInterfaces == null) { 898 javascriptInterfaces = new HashMap<String, Object>(); 899 } 900 exposeAccessibilityJavaScriptApi(javascriptInterfaces); 901 } 902 903 mCallbackProxy = new CallbackProxy(context, this); 904 mViewManager = new ViewManager(this); 905 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javascriptInterfaces); 906 mDatabase = WebViewDatabase.getInstance(context); 907 mScroller = new Scroller(context); 908 mZoomManager = new ZoomManager(this, mCallbackProxy); 909 910 /* The init method must follow the creation of certain member variables, 911 * such as the mZoomManager. 912 */ 913 init(); 914 setupPackageListener(context); 915 updateMultiTouchSupport(context); 916 917 if (privateBrowsing) { 918 startPrivateBrowsing(); 919 } 920 921 L10nUtils.loadStrings(context); 922 } 923 924 /* 925 * The intent receiver that monitors for changes to relevant packages (e.g., 926 * sGoogleApps) and notifies WebViewCore of their existence. 927 */ 928 private static BroadcastReceiver sPackageInstallationReceiver = null; 929 930 /* 931 * A set of Google packages we monitor for the 932 * navigator.isApplicationInstalled() API. Add additional packages as 933 * needed. 934 */ 935 private static Set<String> sGoogleApps; 936 static { 937 sGoogleApps = new HashSet<String>(); 938 sGoogleApps.add("com.google.android.youtube"); 939 } 940 941 private void setupPackageListener(Context context) { 942 943 /* 944 * we must synchronize the instance check and the creation of the 945 * receiver to ensure that only ONE receiver exists for all WebView 946 * instances. 947 */ 948 synchronized (WebView.class) { 949 950 // if the receiver already exists then we do not need to register it 951 // again 952 if (sPackageInstallationReceiver != null) { 953 return; 954 } 955 956 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 957 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 958 filter.addDataScheme("package"); 959 sPackageInstallationReceiver = new BroadcastReceiver() { 960 961 @Override 962 public void onReceive(Context context, Intent intent) { 963 final String action = intent.getAction(); 964 final String packageName = intent.getData().getSchemeSpecificPart(); 965 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 966 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 967 // if it is replacing, refreshPlugins() when adding 968 return; 969 } 970 971 if (sGoogleApps.contains(packageName) && mWebViewCore != null) { 972 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 973 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAME, packageName); 974 } else { 975 mWebViewCore.sendMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 976 } 977 } 978 979 PluginManager pm = PluginManager.getInstance(context); 980 if (pm.containsPluginPermissionAndSignatures(packageName)) { 981 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 982 } 983 } 984 }; 985 986 context.getApplicationContext().registerReceiver(sPackageInstallationReceiver, filter); 987 } 988 989 // check if any of the monitored apps are already installed 990 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 991 992 @Override 993 protected Set<String> doInBackground(Void... unused) { 994 Set<String> installedPackages = new HashSet<String>(); 995 PackageManager pm = mContext.getPackageManager(); 996 List<PackageInfo> packages = pm.getInstalledPackages(0); 997 for (PackageInfo p : packages) { 998 if (sGoogleApps.contains(p.packageName)) { 999 installedPackages.add(p.packageName); 1000 } 1001 } 1002 return installedPackages; 1003 } 1004 1005 // Executes on the UI thread 1006 @Override 1007 protected void onPostExecute(Set<String> installedPackages) { 1008 if (mWebViewCore != null) { 1009 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1010 } 1011 } 1012 }; 1013 task.execute(); 1014 } 1015 1016 void updateMultiTouchSupport(Context context) { 1017 mZoomManager.updateMultiTouchSupport(context); 1018 } 1019 1020 private void init() { 1021 setWillNotDraw(false); 1022 setFocusable(true); 1023 setFocusableInTouchMode(true); 1024 setClickable(true); 1025 setLongClickable(true); 1026 1027 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1028 int slop = configuration.getScaledTouchSlop(); 1029 mTouchSlopSquare = slop * slop; 1030 mMinLockSnapReverseDistance = slop; 1031 slop = configuration.getScaledDoubleTapSlop(); 1032 mDoubleTapSlopSquare = slop * slop; 1033 final float density = getContext().getResources().getDisplayMetrics().density; 1034 // use one line height, 16 based on our current default font, for how 1035 // far we allow a touch be away from the edge of a link 1036 mNavSlop = (int) (16 * density); 1037 mZoomManager.init(density); 1038 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1039 1040 // Compute the inverse of the density squared. 1041 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1042 } 1043 1044 /** 1045 * Exposes accessibility APIs to JavaScript by appending them to the JavaScript 1046 * interfaces map provided by the WebView client. In case of conflicting 1047 * alias with the one of the accessibility API the user specified one wins. 1048 * 1049 * @param javascriptInterfaces A map with interfaces to be exposed to JavaScript. 1050 */ 1051 private void exposeAccessibilityJavaScriptApi(Map<String, Object> javascriptInterfaces) { 1052 if (javascriptInterfaces.containsKey(ALIAS_ACCESSIBILITY_JS_INTERFACE)) { 1053 Log.w(LOGTAG, "JavaScript interface mapped to \"" + ALIAS_ACCESSIBILITY_JS_INTERFACE 1054 + "\" overrides the accessibility API JavaScript interface. No accessibility" 1055 + "API will be exposed to JavaScript!"); 1056 return; 1057 } 1058 1059 // expose the TTS for now ... 1060 javascriptInterfaces.put(ALIAS_ACCESSIBILITY_JS_INTERFACE, 1061 new TextToSpeech(getContext(), null)); 1062 } 1063 1064 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1065 final float density = mContext.getResources().getDisplayMetrics().density 1066 * 100 / zoomDensity; 1067 mNavSlop = (int) (16 * density); 1068 mZoomManager.updateDefaultZoomDensity(density); 1069 } 1070 1071 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1072 String password, final Message resumeMsg) { 1073 boolean rVal = false; 1074 if (resumeMsg == null) { 1075 // null resumeMsg implies saving password silently 1076 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1077 } else { 1078 final Message remember = mPrivateHandler.obtainMessage( 1079 REMEMBER_PASSWORD); 1080 remember.getData().putString("host", schemePlusHost); 1081 remember.getData().putString("username", username); 1082 remember.getData().putString("password", password); 1083 remember.obj = resumeMsg; 1084 1085 final Message neverRemember = mPrivateHandler.obtainMessage( 1086 NEVER_REMEMBER_PASSWORD); 1087 neverRemember.getData().putString("host", schemePlusHost); 1088 neverRemember.getData().putString("username", username); 1089 neverRemember.getData().putString("password", password); 1090 neverRemember.obj = resumeMsg; 1091 1092 new AlertDialog.Builder(getContext()) 1093 .setTitle(com.android.internal.R.string.save_password_label) 1094 .setMessage(com.android.internal.R.string.save_password_message) 1095 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1096 new DialogInterface.OnClickListener() { 1097 public void onClick(DialogInterface dialog, int which) { 1098 resumeMsg.sendToTarget(); 1099 } 1100 }) 1101 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1102 new DialogInterface.OnClickListener() { 1103 public void onClick(DialogInterface dialog, int which) { 1104 remember.sendToTarget(); 1105 } 1106 }) 1107 .setNegativeButton(com.android.internal.R.string.save_password_never, 1108 new DialogInterface.OnClickListener() { 1109 public void onClick(DialogInterface dialog, int which) { 1110 neverRemember.sendToTarget(); 1111 } 1112 }) 1113 .setOnCancelListener(new OnCancelListener() { 1114 public void onCancel(DialogInterface dialog) { 1115 resumeMsg.sendToTarget(); 1116 } 1117 }).show(); 1118 // Return true so that WebViewCore will pause while the dialog is 1119 // up. 1120 rVal = true; 1121 } 1122 return rVal; 1123 } 1124 1125 @Override 1126 public void setScrollBarStyle(int style) { 1127 if (style == View.SCROLLBARS_INSIDE_INSET 1128 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1129 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1130 } else { 1131 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1132 } 1133 super.setScrollBarStyle(style); 1134 } 1135 1136 /** 1137 * Specify whether the horizontal scrollbar has overlay style. 1138 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1139 */ 1140 public void setHorizontalScrollbarOverlay(boolean overlay) { 1141 mOverlayHorizontalScrollbar = overlay; 1142 } 1143 1144 /** 1145 * Specify whether the vertical scrollbar has overlay style. 1146 * @param overlay TRUE if vertical scrollbar should have overlay style. 1147 */ 1148 public void setVerticalScrollbarOverlay(boolean overlay) { 1149 mOverlayVerticalScrollbar = overlay; 1150 } 1151 1152 /** 1153 * Return whether horizontal scrollbar has overlay style 1154 * @return TRUE if horizontal scrollbar has overlay style. 1155 */ 1156 public boolean overlayHorizontalScrollbar() { 1157 return mOverlayHorizontalScrollbar; 1158 } 1159 1160 /** 1161 * Return whether vertical scrollbar has overlay style 1162 * @return TRUE if vertical scrollbar has overlay style. 1163 */ 1164 public boolean overlayVerticalScrollbar() { 1165 return mOverlayVerticalScrollbar; 1166 } 1167 1168 /* 1169 * Return the width of the view where the content of WebView should render 1170 * to. 1171 * Note: this can be called from WebCoreThread. 1172 */ 1173 /* package */ int getViewWidth() { 1174 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1175 return getWidth(); 1176 } else { 1177 return getWidth() - getVerticalScrollbarWidth(); 1178 } 1179 } 1180 1181 /* 1182 * returns the height of the titlebarview (if any). Does not care about 1183 * scrolling 1184 */ 1185 int getTitleHeight() { 1186 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1187 } 1188 1189 /* 1190 * Return the amount of the titlebarview (if any) that is visible 1191 * 1192 * @hide 1193 */ 1194 public int getVisibleTitleHeight() { 1195 return Math.max(getTitleHeight() - mScrollY, 0); 1196 } 1197 1198 /* 1199 * Return the height of the view where the content of WebView should render 1200 * to. Note that this excludes mTitleBar, if there is one. 1201 * Note: this can be called from WebCoreThread. 1202 */ 1203 /* package */ int getViewHeight() { 1204 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1205 } 1206 1207 private int getViewHeightWithTitle() { 1208 int height = getHeight(); 1209 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1210 height -= getHorizontalScrollbarHeight(); 1211 } 1212 return height; 1213 } 1214 1215 /** 1216 * @return The SSL certificate for the main top-level page or null if 1217 * there is no certificate (the site is not secure). 1218 */ 1219 public SslCertificate getCertificate() { 1220 return mCertificate; 1221 } 1222 1223 /** 1224 * Sets the SSL certificate for the main top-level page. 1225 */ 1226 public void setCertificate(SslCertificate certificate) { 1227 if (DebugFlags.WEB_VIEW) { 1228 Log.v(LOGTAG, "setCertificate=" + certificate); 1229 } 1230 // here, the certificate can be null (if the site is not secure) 1231 mCertificate = certificate; 1232 } 1233 1234 //------------------------------------------------------------------------- 1235 // Methods called by activity 1236 //------------------------------------------------------------------------- 1237 1238 /** 1239 * Save the username and password for a particular host in the WebView's 1240 * internal database. 1241 * @param host The host that required the credentials. 1242 * @param username The username for the given host. 1243 * @param password The password for the given host. 1244 */ 1245 public void savePassword(String host, String username, String password) { 1246 mDatabase.setUsernamePassword(host, username, password); 1247 } 1248 1249 /** 1250 * Set the HTTP authentication credentials for a given host and realm. 1251 * 1252 * @param host The host for the credentials. 1253 * @param realm The realm for the credentials. 1254 * @param username The username for the password. If it is null, it means 1255 * password can't be saved. 1256 * @param password The password 1257 */ 1258 public void setHttpAuthUsernamePassword(String host, String realm, 1259 String username, String password) { 1260 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1261 } 1262 1263 /** 1264 * Retrieve the HTTP authentication username and password for a given 1265 * host & realm pair 1266 * 1267 * @param host The host for which the credentials apply. 1268 * @param realm The realm for which the credentials apply. 1269 * @return String[] if found, String[0] is username, which can be null and 1270 * String[1] is password. Return null if it can't find anything. 1271 */ 1272 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1273 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1274 } 1275 1276 /** 1277 * Remove Find or Select ActionModes, if active. 1278 */ 1279 private void clearActionModes() { 1280 if (mSelectCallback != null) { 1281 mSelectCallback.finish(); 1282 } 1283 if (mFindCallback != null) { 1284 mFindCallback.finish(); 1285 } 1286 } 1287 1288 /** 1289 * Called to clear state when moving from one page to another, or changing 1290 * in some other way that makes elements associated with the current page 1291 * (such as WebTextView or ActionModes) no longer relevant. 1292 */ 1293 private void clearHelpers() { 1294 clearTextEntry(); 1295 clearActionModes(); 1296 dismissFullScreenMode(); 1297 } 1298 1299 /** 1300 * Destroy the internal state of the WebView. This method should be called 1301 * after the WebView has been removed from the view system. No other 1302 * methods may be called on a WebView after destroy. 1303 */ 1304 public void destroy() { 1305 clearHelpers(); 1306 if (mListBoxDialog != null) { 1307 mListBoxDialog.dismiss(); 1308 mListBoxDialog = null; 1309 } 1310 if (mWebViewCore != null) { 1311 // Set the handlers to null before destroying WebViewCore so no 1312 // more messages will be posted. 1313 mCallbackProxy.setWebViewClient(null); 1314 mCallbackProxy.setWebChromeClient(null); 1315 // Tell WebViewCore to destroy itself 1316 synchronized (this) { 1317 WebViewCore webViewCore = mWebViewCore; 1318 mWebViewCore = null; // prevent using partial webViewCore 1319 webViewCore.destroy(); 1320 } 1321 // Remove any pending messages that might not be serviced yet. 1322 mPrivateHandler.removeCallbacksAndMessages(null); 1323 mCallbackProxy.removeCallbacksAndMessages(null); 1324 // Wake up the WebCore thread just in case it is waiting for a 1325 // javascript dialog. 1326 synchronized (mCallbackProxy) { 1327 mCallbackProxy.notify(); 1328 } 1329 } 1330 if (mNativeClass != 0) { 1331 nativeDestroy(); 1332 mNativeClass = 0; 1333 } 1334 } 1335 1336 /** 1337 * Enables platform notifications of data state and proxy changes. 1338 */ 1339 public static void enablePlatformNotifications() { 1340 Network.enablePlatformNotifications(); 1341 } 1342 1343 /** 1344 * If platform notifications are enabled, this should be called 1345 * from the Activity's onPause() or onStop(). 1346 */ 1347 public static void disablePlatformNotifications() { 1348 Network.disablePlatformNotifications(); 1349 } 1350 1351 /** 1352 * Sets JavaScript engine flags. 1353 * 1354 * @param flags JS engine flags in a String 1355 * 1356 * @hide pending API solidification 1357 */ 1358 public void setJsFlags(String flags) { 1359 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1360 } 1361 1362 /** 1363 * Inform WebView of the network state. This is used to set 1364 * the javascript property window.navigator.isOnline and 1365 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1366 * @param networkUp boolean indicating if network is available 1367 */ 1368 public void setNetworkAvailable(boolean networkUp) { 1369 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1370 networkUp ? 1 : 0, 0); 1371 } 1372 1373 /** 1374 * Inform WebView about the current network type. 1375 * {@hide} 1376 */ 1377 public void setNetworkType(String type, String subtype) { 1378 Map<String, String> map = new HashMap<String, String>(); 1379 map.put("type", type); 1380 map.put("subtype", subtype); 1381 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1382 } 1383 /** 1384 * Save the state of this WebView used in 1385 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1386 * method no longer stores the display data for this WebView. The previous 1387 * behavior could potentially leak files if {@link #restoreState} was never 1388 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1389 * and restoring the display data. 1390 * @param outState The Bundle to store the WebView state. 1391 * @return The same copy of the back/forward list used to save the state. If 1392 * saveState fails, the returned list will be null. 1393 * @see #savePicture 1394 * @see #restorePicture 1395 */ 1396 public WebBackForwardList saveState(Bundle outState) { 1397 if (outState == null) { 1398 return null; 1399 } 1400 // We grab a copy of the back/forward list because a client of WebView 1401 // may have invalidated the history list by calling clearHistory. 1402 WebBackForwardList list = copyBackForwardList(); 1403 final int currentIndex = list.getCurrentIndex(); 1404 final int size = list.getSize(); 1405 // We should fail saving the state if the list is empty or the index is 1406 // not in a valid range. 1407 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1408 return null; 1409 } 1410 outState.putInt("index", currentIndex); 1411 // FIXME: This should just be a byte[][] instead of ArrayList but 1412 // Parcel.java does not have the code to handle multi-dimensional 1413 // arrays. 1414 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1415 for (int i = 0; i < size; i++) { 1416 WebHistoryItem item = list.getItemAtIndex(i); 1417 if (null == item) { 1418 // FIXME: this shouldn't happen 1419 // need to determine how item got set to null 1420 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1421 return null; 1422 } 1423 byte[] data = item.getFlattenedData(); 1424 if (data == null) { 1425 // It would be very odd to not have any data for a given history 1426 // item. And we will fail to rebuild the history list without 1427 // flattened data. 1428 return null; 1429 } 1430 history.add(data); 1431 } 1432 outState.putSerializable("history", history); 1433 if (mCertificate != null) { 1434 outState.putBundle("certificate", 1435 SslCertificate.saveState(mCertificate)); 1436 } 1437 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1438 mZoomManager.saveZoomState(outState); 1439 return list; 1440 } 1441 1442 /** 1443 * Save the current display data to the Bundle given. Used in conjunction 1444 * with {@link #saveState}. 1445 * @param b A Bundle to store the display data. 1446 * @param dest The file to store the serialized picture data. Will be 1447 * overwritten with this WebView's picture data. 1448 * @return True if the picture was successfully saved. 1449 */ 1450 public boolean savePicture(Bundle b, final File dest) { 1451 if (dest == null || b == null) { 1452 return false; 1453 } 1454 final Picture p = capturePicture(); 1455 // Use a temporary file while writing to ensure the destination file 1456 // contains valid data. 1457 final File temp = new File(dest.getPath() + ".writing"); 1458 new Thread(new Runnable() { 1459 public void run() { 1460 FileOutputStream out = null; 1461 try { 1462 out = new FileOutputStream(temp); 1463 p.writeToStream(out); 1464 // Writing the picture succeeded, rename the temporary file 1465 // to the destination. 1466 temp.renameTo(dest); 1467 } catch (Exception e) { 1468 // too late to do anything about it. 1469 } finally { 1470 if (out != null) { 1471 try { 1472 out.close(); 1473 } catch (Exception e) { 1474 // Can't do anything about that 1475 } 1476 } 1477 temp.delete(); 1478 } 1479 } 1480 }).start(); 1481 // now update the bundle 1482 b.putInt("scrollX", mScrollX); 1483 b.putInt("scrollY", mScrollY); 1484 mZoomManager.saveZoomState(b); 1485 return true; 1486 } 1487 1488 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1489 int sx = b.getInt("scrollX", 0); 1490 int sy = b.getInt("scrollY", 0); 1491 1492 mDrawHistory = true; 1493 mHistoryPicture = p; 1494 mScrollX = sx; 1495 mScrollY = sy; 1496 mZoomManager.restoreZoomState(b); 1497 final float scale = mZoomManager.getScale(); 1498 mHistoryWidth = Math.round(p.getWidth() * scale); 1499 mHistoryHeight = Math.round(p.getHeight() * scale); 1500 1501 invalidate(); 1502 } 1503 1504 /** 1505 * Restore the display data that was save in {@link #savePicture}. Used in 1506 * conjunction with {@link #restoreState}. 1507 * @param b A Bundle containing the saved display data. 1508 * @param src The file where the picture data was stored. 1509 * @return True if the picture was successfully restored. 1510 */ 1511 public boolean restorePicture(Bundle b, File src) { 1512 if (src == null || b == null) { 1513 return false; 1514 } 1515 if (!src.exists()) { 1516 return false; 1517 } 1518 try { 1519 final FileInputStream in = new FileInputStream(src); 1520 final Bundle copy = new Bundle(b); 1521 new Thread(new Runnable() { 1522 public void run() { 1523 try { 1524 final Picture p = Picture.createFromStream(in); 1525 if (p != null) { 1526 // Post a runnable on the main thread to update the 1527 // history picture fields. 1528 mPrivateHandler.post(new Runnable() { 1529 public void run() { 1530 restoreHistoryPictureFields(p, copy); 1531 } 1532 }); 1533 } 1534 } finally { 1535 try { 1536 in.close(); 1537 } catch (Exception e) { 1538 // Nothing we can do now. 1539 } 1540 } 1541 } 1542 }).start(); 1543 } catch (FileNotFoundException e){ 1544 e.printStackTrace(); 1545 } 1546 return true; 1547 } 1548 1549 /** 1550 * Restore the state of this WebView from the given map used in 1551 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1552 * be called to restore the state of the WebView before using the object. If 1553 * it is called after the WebView has had a chance to build state (load 1554 * pages, create a back/forward list, etc.) there may be undesirable 1555 * side-effects. Please note that this method no longer restores the 1556 * display data for this WebView. See {@link #savePicture} and {@link 1557 * #restorePicture} for saving and restoring the display data. 1558 * @param inState The incoming Bundle of state. 1559 * @return The restored back/forward list or null if restoreState failed. 1560 * @see #savePicture 1561 * @see #restorePicture 1562 */ 1563 public WebBackForwardList restoreState(Bundle inState) { 1564 WebBackForwardList returnList = null; 1565 if (inState == null) { 1566 return returnList; 1567 } 1568 if (inState.containsKey("index") && inState.containsKey("history")) { 1569 mCertificate = SslCertificate.restoreState( 1570 inState.getBundle("certificate")); 1571 1572 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1573 final int index = inState.getInt("index"); 1574 // We can't use a clone of the list because we need to modify the 1575 // shared copy, so synchronize instead to prevent concurrent 1576 // modifications. 1577 synchronized (list) { 1578 final List<byte[]> history = 1579 (List<byte[]>) inState.getSerializable("history"); 1580 final int size = history.size(); 1581 // Check the index bounds so we don't crash in native code while 1582 // restoring the history index. 1583 if (index < 0 || index >= size) { 1584 return null; 1585 } 1586 for (int i = 0; i < size; i++) { 1587 byte[] data = history.remove(0); 1588 if (data == null) { 1589 // If we somehow have null data, we cannot reconstruct 1590 // the item and thus our history list cannot be rebuilt. 1591 return null; 1592 } 1593 WebHistoryItem item = new WebHistoryItem(data); 1594 list.addHistoryItem(item); 1595 } 1596 // Grab the most recent copy to return to the caller. 1597 returnList = copyBackForwardList(); 1598 // Update the copy to have the correct index. 1599 returnList.setCurrentIndex(index); 1600 } 1601 // Restore private browsing setting. 1602 if (inState.getBoolean("privateBrowsingEnabled")) { 1603 getSettings().setPrivateBrowsingEnabled(true); 1604 } 1605 mZoomManager.restoreZoomState(inState); 1606 // Remove all pending messages because we are restoring previous 1607 // state. 1608 mWebViewCore.removeMessages(); 1609 // Send a restore state message. 1610 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1611 } 1612 return returnList; 1613 } 1614 1615 /** 1616 * Load the given url with the extra headers. 1617 * @param url The url of the resource to load. 1618 * @param extraHeaders The extra headers sent with this url. This should not 1619 * include the common headers like "user-agent". If it does, it 1620 * will be replaced by the intrinsic value of the WebView. 1621 */ 1622 public void loadUrl(String url, Map<String, String> extraHeaders) { 1623 switchOutDrawHistory(); 1624 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1625 arg.mUrl = url; 1626 arg.mExtraHeaders = extraHeaders; 1627 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1628 clearHelpers(); 1629 } 1630 1631 /** 1632 * Load the given url. 1633 * @param url The url of the resource to load. 1634 */ 1635 public void loadUrl(String url) { 1636 if (url == null) { 1637 return; 1638 } 1639 loadUrl(url, null); 1640 } 1641 1642 /** 1643 * Load the url with postData using "POST" method into the WebView. If url 1644 * is not a network url, it will be loaded with {link 1645 * {@link #loadUrl(String)} instead. 1646 * 1647 * @param url The url of the resource to load. 1648 * @param postData The data will be passed to "POST" request. 1649 */ 1650 public void postUrl(String url, byte[] postData) { 1651 if (URLUtil.isNetworkUrl(url)) { 1652 switchOutDrawHistory(); 1653 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1654 arg.mUrl = url; 1655 arg.mPostData = postData; 1656 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1657 clearHelpers(); 1658 } else { 1659 loadUrl(url); 1660 } 1661 } 1662 1663 /** 1664 * Load the given data into the WebView. This will load the data into 1665 * WebView using the data: scheme. Content loaded through this mechanism 1666 * does not have the ability to load content from the network. 1667 * @param data A String of data in the given encoding. The date must 1668 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1669 * %27, %3f respectively. 1670 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1671 * @param encoding The encoding of the data. i.e. utf-8, base64 1672 */ 1673 public void loadData(String data, String mimeType, String encoding) { 1674 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1675 } 1676 1677 /** 1678 * Load the given data into the WebView, use the provided URL as the base 1679 * URL for the content. The base URL is the URL that represents the page 1680 * that is loaded through this interface. As such, it is used to resolve any 1681 * relative URLs. The historyUrl is used for the history entry. 1682 * <p> 1683 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1684 * files through "file:///android_asset/" for the sub resources is more 1685 * restricted. If you provide null or empty string as baseUrl, you won't be 1686 * able to access asset files. If the baseUrl is anything other than 1687 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1688 * sub resources. 1689 * 1690 * @param baseUrl Url to resolve relative paths with, if null defaults to 1691 * "about:blank" 1692 * @param data A String of data in the given encoding. 1693 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1694 * defaults to "text/html" 1695 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1696 * @param historyUrl URL to use as the history entry. Can be null. 1697 */ 1698 public void loadDataWithBaseURL(String baseUrl, String data, 1699 String mimeType, String encoding, String historyUrl) { 1700 1701 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1702 loadData(data, mimeType, encoding); 1703 return; 1704 } 1705 switchOutDrawHistory(); 1706 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1707 arg.mBaseUrl = baseUrl; 1708 arg.mData = data; 1709 arg.mMimeType = mimeType; 1710 arg.mEncoding = encoding; 1711 arg.mHistoryUrl = historyUrl; 1712 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1713 clearHelpers(); 1714 } 1715 1716 /** 1717 * Saves the current view as a web archive. 1718 * 1719 * @param filename The filename where the archive should be placed. 1720 */ 1721 public void saveWebArchive(String filename) { 1722 saveWebArchive(filename, false, null); 1723 } 1724 1725 /* package */ static class SaveWebArchiveMessage { 1726 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1727 mBasename = basename; 1728 mAutoname = autoname; 1729 mCallback = callback; 1730 } 1731 1732 /* package */ final String mBasename; 1733 /* package */ final boolean mAutoname; 1734 /* package */ final ValueCallback<String> mCallback; 1735 /* package */ String mResultFile; 1736 } 1737 1738 /** 1739 * Saves the current view as a web archive. 1740 * 1741 * @param basename The filename where the archive should be placed. 1742 * @param autoname If false, takes basename to be a file. If true, basename 1743 * is assumed to be a directory in which a filename will be 1744 * chosen according to the url of the current page. 1745 * @param callback Called after the web archive has been saved. The 1746 * parameter for onReceiveValue will either be the filename 1747 * under which the file was saved, or null if saving the 1748 * file failed. 1749 */ 1750 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1751 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1752 new SaveWebArchiveMessage(basename, autoname, callback)); 1753 } 1754 1755 /** 1756 * Stop the current load. 1757 */ 1758 public void stopLoading() { 1759 // TODO: should we clear all the messages in the queue before sending 1760 // STOP_LOADING? 1761 switchOutDrawHistory(); 1762 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1763 } 1764 1765 /** 1766 * Reload the current url. 1767 */ 1768 public void reload() { 1769 clearHelpers(); 1770 switchOutDrawHistory(); 1771 mWebViewCore.sendMessage(EventHub.RELOAD); 1772 } 1773 1774 /** 1775 * Return true if this WebView has a back history item. 1776 * @return True iff this WebView has a back history item. 1777 */ 1778 public boolean canGoBack() { 1779 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1780 synchronized (l) { 1781 if (l.getClearPending()) { 1782 return false; 1783 } else { 1784 return l.getCurrentIndex() > 0; 1785 } 1786 } 1787 } 1788 1789 /** 1790 * Go back in the history of this WebView. 1791 */ 1792 public void goBack() { 1793 goBackOrForward(-1); 1794 } 1795 1796 /** 1797 * Return true if this WebView has a forward history item. 1798 * @return True iff this Webview has a forward history item. 1799 */ 1800 public boolean canGoForward() { 1801 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1802 synchronized (l) { 1803 if (l.getClearPending()) { 1804 return false; 1805 } else { 1806 return l.getCurrentIndex() < l.getSize() - 1; 1807 } 1808 } 1809 } 1810 1811 /** 1812 * Go forward in the history of this WebView. 1813 */ 1814 public void goForward() { 1815 goBackOrForward(1); 1816 } 1817 1818 /** 1819 * Return true if the page can go back or forward the given 1820 * number of steps. 1821 * @param steps The negative or positive number of steps to move the 1822 * history. 1823 */ 1824 public boolean canGoBackOrForward(int steps) { 1825 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1826 synchronized (l) { 1827 if (l.getClearPending()) { 1828 return false; 1829 } else { 1830 int newIndex = l.getCurrentIndex() + steps; 1831 return newIndex >= 0 && newIndex < l.getSize(); 1832 } 1833 } 1834 } 1835 1836 /** 1837 * Go to the history item that is the number of steps away from 1838 * the current item. Steps is negative if backward and positive 1839 * if forward. 1840 * @param steps The number of steps to take back or forward in the back 1841 * forward list. 1842 */ 1843 public void goBackOrForward(int steps) { 1844 goBackOrForward(steps, false); 1845 } 1846 1847 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 1848 if (steps != 0) { 1849 clearHelpers(); 1850 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 1851 ignoreSnapshot ? 1 : 0); 1852 } 1853 } 1854 1855 /** 1856 * Returns true if private browsing is enabled in this WebView. 1857 */ 1858 public boolean isPrivateBrowsingEnabled() { 1859 return getSettings().isPrivateBrowsingEnabled(); 1860 } 1861 1862 private void startPrivateBrowsing() { 1863 boolean wasPrivateBrowsingEnabled = isPrivateBrowsingEnabled(); 1864 1865 getSettings().setPrivateBrowsingEnabled(true); 1866 1867 if (!wasPrivateBrowsingEnabled) { 1868 loadUrl("browser:incognito"); 1869 } 1870 } 1871 1872 /** 1873 * Deletes any files that were created as a part of the last private 1874 * browsing session and clears any internal state associated with that 1875 * session. The consequences of calling this method while a private 1876 * browsing session is active are unspecified. 1877 * @param context The same context which was used to create the private 1878 * browsing WebView. 1879 * @return True if the private browsing files were successfully deleted, 1880 * false otherwise. 1881 * @hide pending API council approval. 1882 */ 1883 public static boolean cleanupPrivateBrowsingFiles(Context context) { 1884 // It seems wrong that we have to pass the storage locations here, given 1885 // that the storage files are created native-side in WebRequestContext 1886 // (albeit using a dumb getter on BrowserFrame to get the paths from 1887 // Java). It looks like this is required because we may need to call 1888 // this method before the BrowserFrame has been set up. 1889 // TODO: Investigate whether this can be avoided. 1890 return nativeCleanupPrivateBrowsingFiles(context.getDatabasePath("dummy").getParent(), 1891 context.getCacheDir().getAbsolutePath()); 1892 } 1893 1894 private static native boolean nativeCleanupPrivateBrowsingFiles(String databaseDirectory, 1895 String cacheDirectory); 1896 1897 private boolean extendScroll(int y) { 1898 int finalY = mScroller.getFinalY(); 1899 int newY = pinLocY(finalY + y); 1900 if (newY == finalY) return false; 1901 mScroller.setFinalY(newY); 1902 mScroller.extendDuration(computeDuration(0, y)); 1903 return true; 1904 } 1905 1906 /** 1907 * Scroll the contents of the view up by half the view size 1908 * @param top true to jump to the top of the page 1909 * @return true if the page was scrolled 1910 */ 1911 public boolean pageUp(boolean top) { 1912 if (mNativeClass == 0) { 1913 return false; 1914 } 1915 nativeClearCursor(); // start next trackball movement from page edge 1916 if (top) { 1917 // go to the top of the document 1918 return pinScrollTo(mScrollX, 0, true, 0); 1919 } 1920 // Page up 1921 int h = getHeight(); 1922 int y; 1923 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1924 y = -h + PAGE_SCROLL_OVERLAP; 1925 } else { 1926 y = -h / 2; 1927 } 1928 mUserScroll = true; 1929 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1930 : extendScroll(y); 1931 } 1932 1933 /** 1934 * Scroll the contents of the view down by half the page size 1935 * @param bottom true to jump to bottom of page 1936 * @return true if the page was scrolled 1937 */ 1938 public boolean pageDown(boolean bottom) { 1939 if (mNativeClass == 0) { 1940 return false; 1941 } 1942 nativeClearCursor(); // start next trackball movement from page edge 1943 if (bottom) { 1944 return pinScrollTo(mScrollX, computeVerticalScrollRange(), true, 0); 1945 } 1946 // Page down. 1947 int h = getHeight(); 1948 int y; 1949 if (h > 2 * PAGE_SCROLL_OVERLAP) { 1950 y = h - PAGE_SCROLL_OVERLAP; 1951 } else { 1952 y = h / 2; 1953 } 1954 mUserScroll = true; 1955 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 1956 : extendScroll(y); 1957 } 1958 1959 /** 1960 * Clear the view so that onDraw() will draw nothing but white background, 1961 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 1962 */ 1963 public void clearView() { 1964 mContentWidth = 0; 1965 mContentHeight = 0; 1966 setBaseLayer(0, null); 1967 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 1968 } 1969 1970 /** 1971 * Return a new picture that captures the current display of the webview. 1972 * This is a copy of the display, and will be unaffected if the webview 1973 * later loads a different URL. 1974 * 1975 * @return a picture containing the current contents of the view. Note this 1976 * picture is of the entire document, and is not restricted to the 1977 * bounds of the view. 1978 */ 1979 public Picture capturePicture() { 1980 if (mNativeClass == 0) return null; 1981 Picture result = new Picture(); 1982 nativeCopyBaseContentToPicture(result); 1983 return result; 1984 } 1985 1986 /** 1987 * Return true if the browser is displaying a TextView for text input. 1988 */ 1989 private boolean inEditingMode() { 1990 return mWebTextView != null && mWebTextView.getParent() != null; 1991 } 1992 1993 /** 1994 * Remove the WebTextView. 1995 */ 1996 private void clearTextEntry() { 1997 if (inEditingMode()) { 1998 mWebTextView.remove(); 1999 } else { 2000 // The keyboard may be open with the WebView as the served view 2001 hideSoftKeyboard(); 2002 } 2003 } 2004 2005 /** 2006 * Return the current scale of the WebView 2007 * @return The current scale. 2008 */ 2009 public float getScale() { 2010 return mZoomManager.getScale(); 2011 } 2012 2013 /** 2014 * Set the initial scale for the WebView. 0 means default. If 2015 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2016 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2017 * WebView starts will this value as initial scale. 2018 * 2019 * @param scaleInPercent The initial scale in percent. 2020 */ 2021 public void setInitialScale(int scaleInPercent) { 2022 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2023 } 2024 2025 /** 2026 * Invoke the graphical zoom picker widget for this WebView. This will 2027 * result in the zoom widget appearing on the screen to control the zoom 2028 * level of this WebView. 2029 */ 2030 public void invokeZoomPicker() { 2031 if (!getSettings().supportZoom()) { 2032 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2033 return; 2034 } 2035 clearHelpers(); 2036 mZoomManager.invokeZoomPicker(); 2037 } 2038 2039 /** 2040 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2041 * is found and the anchor has a non-javascript url, the HitTestResult type 2042 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2043 * anchor does not have a url or if it is a javascript url, the type will 2044 * be UNKNOWN_TYPE and the url has to be retrieved through 2045 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2046 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2047 * the "extra" field. A type of 2048 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2049 * a child node. If a phone number is found, the HitTestResult type is set 2050 * to PHONE_TYPE and the phone number is set in the "extra" field of 2051 * HitTestResult. If a map address is found, the HitTestResult type is set 2052 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2053 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2054 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2055 * HitTestResult type is set to UNKNOWN_TYPE. 2056 */ 2057 public HitTestResult getHitTestResult() { 2058 if (mNativeClass == 0) { 2059 return null; 2060 } 2061 2062 HitTestResult result = new HitTestResult(); 2063 if (nativeHasCursorNode()) { 2064 if (nativeCursorIsTextInput()) { 2065 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2066 } else { 2067 String text = nativeCursorText(); 2068 if (text != null) { 2069 if (text.startsWith(SCHEME_TEL)) { 2070 result.setType(HitTestResult.PHONE_TYPE); 2071 result.setExtra(text.substring(SCHEME_TEL.length())); 2072 } else if (text.startsWith(SCHEME_MAILTO)) { 2073 result.setType(HitTestResult.EMAIL_TYPE); 2074 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2075 } else if (text.startsWith(SCHEME_GEO)) { 2076 result.setType(HitTestResult.GEO_TYPE); 2077 result.setExtra(URLDecoder.decode(text 2078 .substring(SCHEME_GEO.length()))); 2079 } else if (nativeCursorIsAnchor()) { 2080 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2081 result.setExtra(text); 2082 } 2083 } 2084 } 2085 } 2086 int type = result.getType(); 2087 if (type == HitTestResult.UNKNOWN_TYPE 2088 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2089 // Now check to see if it is an image. 2090 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2091 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2092 String text = nativeImageURI(contentX, contentY); 2093 if (text != null) { 2094 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2095 HitTestResult.IMAGE_TYPE : 2096 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2097 result.setExtra(text); 2098 } 2099 } 2100 return result; 2101 } 2102 2103 // Called by JNI when the DOM has changed the focus. Clear the focus so 2104 // that new keys will go to the newly focused field 2105 private void domChangedFocus() { 2106 if (inEditingMode()) { 2107 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2108 } 2109 } 2110 /** 2111 * Request the href of an anchor element due to getFocusNodePath returning 2112 * "href." If hrefMsg is null, this method returns immediately and does not 2113 * dispatch hrefMsg to its target. 2114 * 2115 * @param hrefMsg This message will be dispatched with the result of the 2116 * request as the data member with "url" as key. The result can 2117 * be null. 2118 */ 2119 // FIXME: API change required to change the name of this function. We now 2120 // look at the cursor node, and not the focus node. Also, what is 2121 // getFocusNodePath? 2122 public void requestFocusNodeHref(Message hrefMsg) { 2123 if (hrefMsg == null || mNativeClass == 0) { 2124 return; 2125 } 2126 if (nativeCursorIsAnchor()) { 2127 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2128 nativeCursorFramePointer(), nativeCursorNodePointer(), 2129 hrefMsg); 2130 } 2131 } 2132 2133 /** 2134 * Request the url of the image last touched by the user. msg will be sent 2135 * to its target with a String representing the url as its object. 2136 * 2137 * @param msg This message will be dispatched with the result of the request 2138 * as the data member with "url" as key. The result can be null. 2139 */ 2140 public void requestImageRef(Message msg) { 2141 if (0 == mNativeClass) return; // client isn't initialized 2142 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 2143 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 2144 String ref = nativeImageURI(contentX, contentY); 2145 Bundle data = msg.getData(); 2146 data.putString("url", ref); 2147 msg.setData(data); 2148 msg.sendToTarget(); 2149 } 2150 2151 static int pinLoc(int x, int viewMax, int docMax) { 2152// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2153 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2154 // pin the short document to the top/left of the screen 2155 x = 0; 2156// Log.d(LOGTAG, "--- center " + x); 2157 } else if (x < 0) { 2158 x = 0; 2159// Log.d(LOGTAG, "--- zero"); 2160 } else if (x + viewMax > docMax) { 2161 x = docMax - viewMax; 2162// Log.d(LOGTAG, "--- pin " + x); 2163 } 2164 return x; 2165 } 2166 2167 // Expects x in view coordinates 2168 int pinLocX(int x) { 2169 return pinLoc(x, getViewWidth(), computeHorizontalScrollRange()); 2170 } 2171 2172 // Expects y in view coordinates 2173 int pinLocY(int y) { 2174 return pinLoc(y, getViewHeightWithTitle(), 2175 computeVerticalScrollRange() + getTitleHeight()); 2176 } 2177 2178 /** 2179 * A title bar which is embedded in this WebView, and scrolls along with it 2180 * vertically, but not horizontally. 2181 */ 2182 private View mTitleBar; 2183 2184 /** 2185 * Since we draw the title bar ourselves, we removed the shadow from the 2186 * browser's activity. We do want a shadow at the bottom of the title bar, 2187 * or at the top of the screen if the title bar is not visible. This 2188 * drawable serves that purpose. 2189 */ 2190 private Drawable mTitleShadow; 2191 2192 /** 2193 * Add or remove a title bar to be embedded into the WebView, and scroll 2194 * along with it vertically, while remaining in view horizontally. Pass 2195 * null to remove the title bar from the WebView, and return to drawing 2196 * the WebView normally without translating to account for the title bar. 2197 * @hide 2198 */ 2199 public void setEmbeddedTitleBar(View v) { 2200 if (null == v) { 2201 // If one of our callbacks is holding onto the titlebar to replace 2202 // it when its ActionMode ends, remove it. 2203 if (mSelectCallback != null) { 2204 mSelectCallback.setTitleBar(null); 2205 } 2206 if (mFindCallback != null) { 2207 mFindCallback.setTitleBar(null); 2208 } 2209 } 2210 if (mTitleBar == v) return; 2211 if (mTitleBar != null) { 2212 removeView(mTitleBar); 2213 } 2214 if (null != v) { 2215 addView(v, new AbsoluteLayout.LayoutParams( 2216 ViewGroup.LayoutParams.MATCH_PARENT, 2217 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2218 if (mTitleShadow == null) { 2219 mTitleShadow = (Drawable) mContext.getResources().getDrawable( 2220 com.android.internal.R.drawable.title_bar_shadow); 2221 } 2222 } 2223 mTitleBar = v; 2224 } 2225 2226 /** 2227 * Given a distance in view space, convert it to content space. Note: this 2228 * does not reflect translation, just scaling, so this should not be called 2229 * with coordinates, but should be called for dimensions like width or 2230 * height. 2231 */ 2232 private int viewToContentDimension(int d) { 2233 return Math.round(d * mZoomManager.getInvScale()); 2234 } 2235 2236 /** 2237 * Given an x coordinate in view space, convert it to content space. Also 2238 * may be used for absolute heights (such as for the WebTextView's 2239 * textSize, which is unaffected by the height of the title bar). 2240 */ 2241 /*package*/ int viewToContentX(int x) { 2242 return viewToContentDimension(x); 2243 } 2244 2245 /** 2246 * Given a y coordinate in view space, convert it to content space. 2247 * Takes into account the height of the title bar if there is one 2248 * embedded into the WebView. 2249 */ 2250 /*package*/ int viewToContentY(int y) { 2251 return viewToContentDimension(y - getTitleHeight()); 2252 } 2253 2254 /** 2255 * Given a x coordinate in view space, convert it to content space. 2256 * Returns the result as a float. 2257 */ 2258 private float viewToContentXf(int x) { 2259 return x * mZoomManager.getInvScale(); 2260 } 2261 2262 /** 2263 * Given a y coordinate in view space, convert it to content space. 2264 * Takes into account the height of the title bar if there is one 2265 * embedded into the WebView. Returns the result as a float. 2266 */ 2267 private float viewToContentYf(int y) { 2268 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2269 } 2270 2271 /** 2272 * Given a distance in content space, convert it to view space. Note: this 2273 * does not reflect translation, just scaling, so this should not be called 2274 * with coordinates, but should be called for dimensions like width or 2275 * height. 2276 */ 2277 /*package*/ int contentToViewDimension(int d) { 2278 return Math.round(d * mZoomManager.getScale()); 2279 } 2280 2281 /** 2282 * Given an x coordinate in content space, convert it to view 2283 * space. 2284 */ 2285 /*package*/ int contentToViewX(int x) { 2286 return contentToViewDimension(x); 2287 } 2288 2289 /** 2290 * Given a y coordinate in content space, convert it to view 2291 * space. Takes into account the height of the title bar. 2292 */ 2293 /*package*/ int contentToViewY(int y) { 2294 return contentToViewDimension(y) + getTitleHeight(); 2295 } 2296 2297 private Rect contentToViewRect(Rect x) { 2298 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2299 contentToViewX(x.right), contentToViewY(x.bottom)); 2300 } 2301 2302 /* To invalidate a rectangle in content coordinates, we need to transform 2303 the rect into view coordinates, so we can then call invalidate(...). 2304 2305 Normally, we would just call contentToView[XY](...), which eventually 2306 calls Math.round(coordinate * mActualScale). However, for invalidates, 2307 we need to account for the slop that occurs with antialiasing. To 2308 address that, we are a little more liberal in the size of the rect that 2309 we invalidate. 2310 2311 This liberal calculation calls floor() for the top/left, and ceil() for 2312 the bottom/right coordinates. This catches the possible extra pixels of 2313 antialiasing that we might have missed with just round(). 2314 */ 2315 2316 // Called by JNI to invalidate the View, given rectangle coordinates in 2317 // content space 2318 private void viewInvalidate(int l, int t, int r, int b) { 2319 final float scale = mZoomManager.getScale(); 2320 final int dy = getTitleHeight(); 2321 invalidate((int)Math.floor(l * scale), 2322 (int)Math.floor(t * scale) + dy, 2323 (int)Math.ceil(r * scale), 2324 (int)Math.ceil(b * scale) + dy); 2325 } 2326 2327 // Called by JNI to invalidate the View after a delay, given rectangle 2328 // coordinates in content space 2329 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2330 final float scale = mZoomManager.getScale(); 2331 final int dy = getTitleHeight(); 2332 postInvalidateDelayed(delay, 2333 (int)Math.floor(l * scale), 2334 (int)Math.floor(t * scale) + dy, 2335 (int)Math.ceil(r * scale), 2336 (int)Math.ceil(b * scale) + dy); 2337 } 2338 2339 private void invalidateContentRect(Rect r) { 2340 viewInvalidate(r.left, r.top, r.right, r.bottom); 2341 } 2342 2343 // stop the scroll animation, and don't let a subsequent fling add 2344 // to the existing velocity 2345 private void abortAnimation() { 2346 mScroller.abortAnimation(); 2347 mLastVelocity = 0; 2348 } 2349 2350 /* call from webcoreview.draw(), so we're still executing in the UI thread 2351 */ 2352 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2353 2354 // premature data from webkit, ignore 2355 if ((w | h) == 0) { 2356 return; 2357 } 2358 2359 // don't abort a scroll animation if we didn't change anything 2360 if (mContentWidth != w || mContentHeight != h) { 2361 // record new dimensions 2362 mContentWidth = w; 2363 mContentHeight = h; 2364 // If history Picture is drawn, don't update scroll. They will be 2365 // updated when we get out of that mode. 2366 if (!mDrawHistory) { 2367 // repin our scroll, taking into account the new content size 2368 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2369 if (!mScroller.isFinished()) { 2370 // We are in the middle of a scroll. Repin the final scroll 2371 // position. 2372 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2373 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2374 } 2375 } 2376 } 2377 contentSizeChanged(updateLayout); 2378 } 2379 2380 // Used to avoid sending many visible rect messages. 2381 private Rect mLastVisibleRectSent; 2382 private Rect mLastGlobalRect; 2383 2384 Rect sendOurVisibleRect() { 2385 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2386 2387 Rect rect = new Rect(); 2388 calcOurContentVisibleRect(rect); 2389 // Rect.equals() checks for null input. 2390 if (!rect.equals(mLastVisibleRectSent)) { 2391 Point pos = new Point(rect.left, rect.top); 2392 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2393 nativeMoveGeneration(), mUserScroll ? 1 : 0, pos); 2394 mLastVisibleRectSent = rect; 2395 } 2396 Rect globalRect = new Rect(); 2397 if (getGlobalVisibleRect(globalRect) 2398 && !globalRect.equals(mLastGlobalRect)) { 2399 if (DebugFlags.WEB_VIEW) { 2400 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2401 + globalRect.top + ",r=" + globalRect.right + ",b=" 2402 + globalRect.bottom); 2403 } 2404 // TODO: the global offset is only used by windowRect() 2405 // in ChromeClientAndroid ; other clients such as touch 2406 // and mouse events could return view + screen relative points. 2407 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2408 mLastGlobalRect = globalRect; 2409 } 2410 return rect; 2411 } 2412 2413 // Sets r to be the visible rectangle of our webview in view coordinates 2414 private void calcOurVisibleRect(Rect r) { 2415 Point p = new Point(); 2416 getGlobalVisibleRect(r, p); 2417 r.offset(-p.x, -p.y); 2418 } 2419 2420 // Sets r to be our visible rectangle in content coordinates 2421 private void calcOurContentVisibleRect(Rect r) { 2422 calcOurVisibleRect(r); 2423 // pin the rect to the bounds of the content 2424 r.left = Math.max(viewToContentX(r.left), 0); 2425 // viewToContentY will remove the total height of the title bar. Add 2426 // the visible height back in to account for the fact that if the title 2427 // bar is partially visible, the part of the visible rect which is 2428 // displaying our content is displaced by that amount. 2429 r.top = Math.max(viewToContentY(r.top + getVisibleTitleHeight()), 0); 2430 r.right = Math.min(viewToContentX(r.right), mContentWidth); 2431 r.bottom = Math.min(viewToContentY(r.bottom), mContentHeight); 2432 } 2433 2434 // Sets r to be our visible rectangle in content coordinates. We use this 2435 // method on the native side to compute the position of the fixed layers. 2436 // Uses floating coordinates (necessary to correctly place elements when 2437 // the scale factor is not 1) 2438 private void calcOurContentVisibleRectF(RectF r) { 2439 Rect ri = new Rect(0,0,0,0); 2440 calcOurVisibleRect(ri); 2441 // pin the rect to the bounds of the content 2442 r.left = Math.max(viewToContentXf(ri.left), 0.0f); 2443 // viewToContentY will remove the total height of the title bar. Add 2444 // the visible height back in to account for the fact that if the title 2445 // bar is partially visible, the part of the visible rect which is 2446 // displaying our content is displaced by that amount. 2447 r.top = Math.max(viewToContentYf(ri.top + getVisibleTitleHeight()), 0.0f); 2448 r.right = Math.min(viewToContentXf(ri.right), (float)mContentWidth); 2449 r.bottom = Math.min(viewToContentYf(ri.bottom), (float)mContentHeight); 2450 } 2451 2452 static class ViewSizeData { 2453 int mWidth; 2454 int mHeight; 2455 int mTextWrapWidth; 2456 int mAnchorX; 2457 int mAnchorY; 2458 float mScale; 2459 boolean mIgnoreHeight; 2460 } 2461 2462 /** 2463 * Compute unzoomed width and height, and if they differ from the last 2464 * values we sent, send them to webkit (to be used as new viewport) 2465 * 2466 * @param force ensures that the message is sent to webkit even if the width 2467 * or height has not changed since the last message 2468 * 2469 * @return true if new values were sent 2470 */ 2471 boolean sendViewSizeZoom(boolean force) { 2472 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2473 2474 int viewWidth = getViewWidth(); 2475 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2476 int newHeight = Math.round((getViewHeightWithTitle() - getTitleHeight()) * mZoomManager.getInvScale()); 2477 /* 2478 * Because the native side may have already done a layout before the 2479 * View system was able to measure us, we have to send a height of 0 to 2480 * remove excess whitespace when we grow our width. This will trigger a 2481 * layout and a change in content size. This content size change will 2482 * mean that contentSizeChanged will either call this method directly or 2483 * indirectly from onSizeChanged. 2484 */ 2485 if (newWidth > mLastWidthSent && mWrapContent) { 2486 newHeight = 0; 2487 } 2488 // Avoid sending another message if the dimensions have not changed. 2489 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force) { 2490 ViewSizeData data = new ViewSizeData(); 2491 data.mWidth = newWidth; 2492 data.mHeight = newHeight; 2493 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2494 data.mScale = mZoomManager.getScale(); 2495 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2496 && !mHeightCanMeasure; 2497 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2498 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2499 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2500 mLastWidthSent = newWidth; 2501 mLastHeightSent = newHeight; 2502 mZoomManager.clearDocumentAnchor(); 2503 return true; 2504 } 2505 return false; 2506 } 2507 2508 @Override 2509 protected int computeHorizontalScrollRange() { 2510 if (mDrawHistory) { 2511 return mHistoryWidth; 2512 } else if (mHorizontalScrollBarMode == SCROLLBAR_ALWAYSOFF 2513 && !mZoomManager.canZoomOut()) { 2514 // only honor the scrollbar mode when it is at minimum zoom level 2515 return computeHorizontalScrollExtent(); 2516 } else { 2517 // to avoid rounding error caused unnecessary scrollbar, use floor 2518 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2519 } 2520 } 2521 2522 @Override 2523 protected int computeVerticalScrollRange() { 2524 if (mDrawHistory) { 2525 return mHistoryHeight; 2526 } else if (mVerticalScrollBarMode == SCROLLBAR_ALWAYSOFF 2527 && !mZoomManager.canZoomOut()) { 2528 // only honor the scrollbar mode when it is at minimum zoom level 2529 return computeVerticalScrollExtent(); 2530 } else { 2531 // to avoid rounding error caused unnecessary scrollbar, use floor 2532 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2533 } 2534 } 2535 2536 @Override 2537 protected int computeVerticalScrollOffset() { 2538 return Math.max(mScrollY - getTitleHeight(), 0); 2539 } 2540 2541 @Override 2542 protected int computeVerticalScrollExtent() { 2543 return getViewHeight(); 2544 } 2545 2546 /** @hide */ 2547 @Override 2548 protected void onDrawVerticalScrollBar(Canvas canvas, 2549 Drawable scrollBar, 2550 int l, int t, int r, int b) { 2551 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2552 scrollBar.draw(canvas); 2553 } 2554 2555 /** 2556 * Get the url for the current page. This is not always the same as the url 2557 * passed to WebViewClient.onPageStarted because although the load for 2558 * that url has begun, the current page may not have changed. 2559 * @return The url for the current page. 2560 */ 2561 public String getUrl() { 2562 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2563 return h != null ? h.getUrl() : null; 2564 } 2565 2566 /** 2567 * Get the original url for the current page. This is not always the same 2568 * as the url passed to WebViewClient.onPageStarted because although the 2569 * load for that url has begun, the current page may not have changed. 2570 * Also, there may have been redirects resulting in a different url to that 2571 * originally requested. 2572 * @return The url that was originally requested for the current page. 2573 */ 2574 public String getOriginalUrl() { 2575 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2576 return h != null ? h.getOriginalUrl() : null; 2577 } 2578 2579 /** 2580 * Get the title for the current page. This is the title of the current page 2581 * until WebViewClient.onReceivedTitle is called. 2582 * @return The title for the current page. 2583 */ 2584 public String getTitle() { 2585 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2586 return h != null ? h.getTitle() : null; 2587 } 2588 2589 /** 2590 * Get the favicon for the current page. This is the favicon of the current 2591 * page until WebViewClient.onReceivedIcon is called. 2592 * @return The favicon for the current page. 2593 */ 2594 public Bitmap getFavicon() { 2595 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2596 return h != null ? h.getFavicon() : null; 2597 } 2598 2599 /** 2600 * Get the touch icon url for the apple-touch-icon <link> element, or 2601 * a URL on this site's server pointing to the standard location of a 2602 * touch icon. 2603 * @hide 2604 */ 2605 public String getTouchIconUrl() { 2606 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2607 return h != null ? h.getTouchIconUrl() : null; 2608 } 2609 2610 /** 2611 * Get the progress for the current page. 2612 * @return The progress for the current page between 0 and 100. 2613 */ 2614 public int getProgress() { 2615 return mCallbackProxy.getProgress(); 2616 } 2617 2618 /** 2619 * @return the height of the HTML content. 2620 */ 2621 public int getContentHeight() { 2622 return mContentHeight; 2623 } 2624 2625 /** 2626 * @return the width of the HTML content. 2627 * @hide 2628 */ 2629 public int getContentWidth() { 2630 return mContentWidth; 2631 } 2632 2633 /** 2634 * Pause all layout, parsing, and javascript timers for all webviews. This 2635 * is a global requests, not restricted to just this webview. This can be 2636 * useful if the application has been paused. 2637 */ 2638 public void pauseTimers() { 2639 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2640 } 2641 2642 /** 2643 * Resume all layout, parsing, and javascript timers for all webviews. 2644 * This will resume dispatching all timers. 2645 */ 2646 public void resumeTimers() { 2647 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2648 } 2649 2650 /** 2651 * Call this to pause any extra processing associated with this view and 2652 * its associated DOM/plugins/javascript/etc. For example, if the view is 2653 * taken offscreen, this could be called to reduce unnecessary CPU and/or 2654 * network traffic. When the view is again "active", call onResume(). 2655 * 2656 * Note that this differs from pauseTimers(), which affects all views/DOMs 2657 * @hide 2658 */ 2659 public void onPause() { 2660 if (!mIsPaused) { 2661 mIsPaused = true; 2662 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2663 } 2664 } 2665 2666 /** 2667 * Call this to balanace a previous call to onPause() 2668 * @hide 2669 */ 2670 public void onResume() { 2671 if (mIsPaused) { 2672 mIsPaused = false; 2673 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2674 } 2675 } 2676 2677 /** 2678 * Returns true if the view is paused, meaning onPause() was called. Calling 2679 * onResume() sets the paused state back to false. 2680 * @hide 2681 */ 2682 public boolean isPaused() { 2683 return mIsPaused; 2684 } 2685 2686 /** 2687 * Call this to inform the view that memory is low so that it can 2688 * free any available memory. 2689 */ 2690 public void freeMemory() { 2691 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2692 } 2693 2694 /** 2695 * Clear the resource cache. Note that the cache is per-application, so 2696 * this will clear the cache for all WebViews used. 2697 * 2698 * @param includeDiskFiles If false, only the RAM cache is cleared. 2699 */ 2700 public void clearCache(boolean includeDiskFiles) { 2701 // Note: this really needs to be a static method as it clears cache for all 2702 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2703 // we can't make this static. 2704 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2705 includeDiskFiles ? 1 : 0, 0); 2706 } 2707 2708 /** 2709 * Make sure that clearing the form data removes the adapter from the 2710 * currently focused textfield if there is one. 2711 */ 2712 public void clearFormData() { 2713 if (inEditingMode()) { 2714 AutoCompleteAdapter adapter = null; 2715 mWebTextView.setAdapterCustom(adapter); 2716 } 2717 } 2718 2719 /** 2720 * Tell the WebView to clear its internal back/forward list. 2721 */ 2722 public void clearHistory() { 2723 mCallbackProxy.getBackForwardList().setClearPending(); 2724 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2725 } 2726 2727 /** 2728 * Clear the SSL preferences table stored in response to proceeding with SSL 2729 * certificate errors. 2730 */ 2731 public void clearSslPreferences() { 2732 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2733 } 2734 2735 /** 2736 * Return the WebBackForwardList for this WebView. This contains the 2737 * back/forward list for use in querying each item in the history stack. 2738 * This is a copy of the private WebBackForwardList so it contains only a 2739 * snapshot of the current state. Multiple calls to this method may return 2740 * different objects. The object returned from this method will not be 2741 * updated to reflect any new state. 2742 */ 2743 public WebBackForwardList copyBackForwardList() { 2744 return mCallbackProxy.getBackForwardList().clone(); 2745 } 2746 2747 /* 2748 * Highlight and scroll to the next occurance of String in findAll. 2749 * Wraps the page infinitely, and scrolls. Must be called after 2750 * calling findAll. 2751 * 2752 * @param forward Direction to search. 2753 */ 2754 public void findNext(boolean forward) { 2755 if (0 == mNativeClass) return; // client isn't initialized 2756 nativeFindNext(forward); 2757 } 2758 2759 /* 2760 * Find all instances of find on the page and highlight them. 2761 * @param find String to find. 2762 * @return int The number of occurances of the String "find" 2763 * that were found. 2764 */ 2765 public int findAll(String find) { 2766 if (0 == mNativeClass) return 0; // client isn't initialized 2767 int result = find != null ? nativeFindAll(find.toLowerCase(), 2768 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 2769 invalidate(); 2770 mLastFind = find; 2771 return result; 2772 } 2773 2774 /** 2775 * Start an ActionMode for finding text in this WebView. 2776 * @param text If non-null, will be the initial text to search for. 2777 * Otherwise, the last String searched for in this WebView will 2778 * be used to start. 2779 */ 2780 public void showFindDialog(String text) { 2781 mFindCallback = new FindActionModeCallback(mContext); 2782 setFindIsUp(true); 2783 mFindCallback.setWebView(this); 2784 View titleBar = mTitleBar; 2785 // We do not want to show the embedded title bar during find or 2786 // select, but keep track of it so that it can be replaced when the 2787 // mode is exited. 2788 setEmbeddedTitleBar(null); 2789 mFindCallback.setTitleBar(titleBar); 2790 startActionMode(mFindCallback); 2791 if (text == null) { 2792 text = mLastFind; 2793 } 2794 if (text != null) { 2795 mFindCallback.setText(text); 2796 } 2797 } 2798 2799 /** 2800 * Keep track of the find callback so that we can remove its titlebar if 2801 * necessary. 2802 */ 2803 private FindActionModeCallback mFindCallback; 2804 2805 /** 2806 * Toggle whether the find dialog is showing, for both native and Java. 2807 */ 2808 private void setFindIsUp(boolean isUp) { 2809 mFindIsUp = isUp; 2810 if (0 == mNativeClass) return; // client isn't initialized 2811 nativeSetFindIsUp(isUp); 2812 } 2813 2814 /** 2815 * Return the index of the currently highlighted match. 2816 */ 2817 int findIndex() { 2818 if (0 == mNativeClass) return -1; 2819 return nativeFindIndex(); 2820 } 2821 2822 // Used to know whether the find dialog is open. Affects whether 2823 // or not we draw the highlights for matches. 2824 private boolean mFindIsUp; 2825 2826 // Keep track of the last string sent, so we can search again when find is 2827 // reopened. 2828 private String mLastFind; 2829 2830 /** 2831 * Return the first substring consisting of the address of a physical 2832 * location. Currently, only addresses in the United States are detected, 2833 * and consist of: 2834 * - a house number 2835 * - a street name 2836 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2837 * - a city name 2838 * - a state or territory, either spelled out or two-letter abbr. 2839 * - an optional 5 digit or 9 digit zip code. 2840 * 2841 * All names must be correctly capitalized, and the zip code, if present, 2842 * must be valid for the state. The street type must be a standard USPS 2843 * spelling or abbreviation. The state or territory must also be spelled 2844 * or abbreviated using USPS standards. The house number may not exceed 2845 * five digits. 2846 * @param addr The string to search for addresses. 2847 * 2848 * @return the address, or if no address is found, return null. 2849 */ 2850 public static String findAddress(String addr) { 2851 return findAddress(addr, false); 2852 } 2853 2854 /** 2855 * @hide 2856 * Return the first substring consisting of the address of a physical 2857 * location. Currently, only addresses in the United States are detected, 2858 * and consist of: 2859 * - a house number 2860 * - a street name 2861 * - a street type (Road, Circle, etc), either spelled out or abbreviated 2862 * - a city name 2863 * - a state or territory, either spelled out or two-letter abbr. 2864 * - an optional 5 digit or 9 digit zip code. 2865 * 2866 * Names are optionally capitalized, and the zip code, if present, 2867 * must be valid for the state. The street type must be a standard USPS 2868 * spelling or abbreviation. The state or territory must also be spelled 2869 * or abbreviated using USPS standards. The house number may not exceed 2870 * five digits. 2871 * @param addr The string to search for addresses. 2872 * @param caseInsensitive addr Set to true to make search ignore case. 2873 * 2874 * @return the address, or if no address is found, return null. 2875 */ 2876 public static String findAddress(String addr, boolean caseInsensitive) { 2877 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 2878 } 2879 2880 /* 2881 * Clear the highlighting surrounding text matches created by findAll. 2882 */ 2883 public void clearMatches() { 2884 if (mNativeClass == 0) 2885 return; 2886 nativeSetFindIsEmpty(); 2887 invalidate(); 2888 } 2889 2890 /** 2891 * Called when the find ActionMode ends. 2892 */ 2893 void notifyFindDialogDismissed() { 2894 mFindCallback = null; 2895 if (mWebViewCore == null) { 2896 return; 2897 } 2898 clearMatches(); 2899 setFindIsUp(false); 2900 // Now that the dialog has been removed, ensure that we scroll to a 2901 // location that is not beyond the end of the page. 2902 pinScrollTo(mScrollX, mScrollY, false, 0); 2903 invalidate(); 2904 } 2905 2906 /** 2907 * Query the document to see if it contains any image references. The 2908 * message object will be dispatched with arg1 being set to 1 if images 2909 * were found and 0 if the document does not reference any images. 2910 * @param response The message that will be dispatched with the result. 2911 */ 2912 public void documentHasImages(Message response) { 2913 if (response == null) { 2914 return; 2915 } 2916 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 2917 } 2918 2919 /** 2920 * Request the scroller to abort any ongoing animation 2921 * 2922 * @hide 2923 */ 2924 public void stopScroll() { 2925 mScroller.forceFinished(true); 2926 mLastVelocity = 0; 2927 } 2928 2929 @Override 2930 public void computeScroll() { 2931 if (mScroller.computeScrollOffset()) { 2932 int oldX = mScrollX; 2933 int oldY = mScrollY; 2934 mScrollX = mScroller.getCurrX(); 2935 mScrollY = mScroller.getCurrY(); 2936 postInvalidate(); // So we draw again 2937 if (oldX != mScrollX || oldY != mScrollY) { 2938 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 2939 } else { 2940 abortAnimation(); 2941 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 2942 WebViewCore.resumePriority(); 2943 WebViewCore.resumeUpdatePicture(mWebViewCore); 2944 } 2945 } else { 2946 super.computeScroll(); 2947 } 2948 } 2949 2950 private static int computeDuration(int dx, int dy) { 2951 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 2952 int duration = distance * 1000 / STD_SPEED; 2953 return Math.min(duration, MAX_DURATION); 2954 } 2955 2956 // helper to pin the scrollBy parameters (already in view coordinates) 2957 // returns true if the scroll was changed 2958 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 2959 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 2960 } 2961 // helper to pin the scrollTo parameters (already in view coordinates) 2962 // returns true if the scroll was changed 2963 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 2964 x = pinLocX(x); 2965 y = pinLocY(y); 2966 int dx = x - mScrollX; 2967 int dy = y - mScrollY; 2968 2969 if ((dx | dy) == 0) { 2970 return false; 2971 } 2972 if (animate) { 2973 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 2974 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 2975 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 2976 awakenScrollBars(mScroller.getDuration()); 2977 invalidate(); 2978 } else { 2979 abortAnimation(); // just in case 2980 scrollTo(x, y); 2981 } 2982 return true; 2983 } 2984 2985 // Scale from content to view coordinates, and pin. 2986 // Also called by jni webview.cpp 2987 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 2988 if (mDrawHistory) { 2989 // disallow WebView to change the scroll position as History Picture 2990 // is used in the view system. 2991 // TODO: as we switchOutDrawHistory when trackball or navigation 2992 // keys are hit, this should be safe. Right? 2993 return false; 2994 } 2995 cx = contentToViewDimension(cx); 2996 cy = contentToViewDimension(cy); 2997 if (mHeightCanMeasure) { 2998 // move our visible rect according to scroll request 2999 if (cy != 0) { 3000 Rect tempRect = new Rect(); 3001 calcOurVisibleRect(tempRect); 3002 tempRect.offset(cx, cy); 3003 requestRectangleOnScreen(tempRect); 3004 } 3005 // FIXME: We scroll horizontally no matter what because currently 3006 // ScrollView and ListView will not scroll horizontally. 3007 // FIXME: Why do we only scroll horizontally if there is no 3008 // vertical scroll? 3009// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3010 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3011 } else { 3012 return pinScrollBy(cx, cy, animate, 0); 3013 } 3014 } 3015 3016 /** 3017 * Called by CallbackProxy when the page starts loading. 3018 * @param url The URL of the page which has started loading. 3019 */ 3020 /* package */ void onPageStarted(String url) { 3021 // every time we start a new page, we want to reset the 3022 // WebView certificate: if the new site is secure, we 3023 // will reload it and get a new certificate set; 3024 // if the new site is not secure, the certificate must be 3025 // null, and that will be the case 3026 setCertificate(null); 3027 3028 // reset the flag since we set to true in if need after 3029 // loading is see onPageFinished(Url) 3030 mAccessibilityScriptInjected = false; 3031 } 3032 3033 /** 3034 * Called by CallbackProxy when the page finishes loading. 3035 * @param url The URL of the page which has finished loading. 3036 */ 3037 /* package */ void onPageFinished(String url) { 3038 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3039 // If the user is now on a different page, or has scrolled the page 3040 // past the point where the title bar is offscreen, ignore the 3041 // scroll request. 3042 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3043 && mScrollX == 0 && mScrollY == 0) { 3044 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3045 SLIDE_TITLE_DURATION); 3046 } 3047 mPageThatNeedsToSlideTitleBarOffScreen = null; 3048 } 3049 3050 injectAccessibilityForUrl(url); 3051 } 3052 3053 /** 3054 * This method injects accessibility in the loaded document if accessibility 3055 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3056 * If no URL specific script is found or JavaScript is disabled we fallback to 3057 * the default {@link AccessibilityInjector} implementation. 3058 * </p> 3059 * If the URL has the "axs" paramter set to 1 it has already done the 3060 * script injection so we do nothing. If the parameter is set to 0 3061 * the URL opts out accessibility script injection so we fall back to 3062 * the default {@link AccessibilityInjector}. 3063 * </p> 3064 * Note: If the user has not opted-in the accessibility script injection no scripts 3065 * are injected rather the default {@link AccessibilityInjector} implementation 3066 * is used. 3067 * 3068 * @param url The URL loaded by this {@link WebView}. 3069 */ 3070 private void injectAccessibilityForUrl(String url) { 3071 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3072 3073 if (!accessibilityManager.isEnabled()) { 3074 // it is possible that accessibility was turned off between reloads 3075 ensureAccessibilityScriptInjectorInstance(false); 3076 return; 3077 } 3078 3079 if (!getSettings().getJavaScriptEnabled()) { 3080 // no JS so we fallback to the basic buil-in support 3081 ensureAccessibilityScriptInjectorInstance(true); 3082 return; 3083 } 3084 3085 // check the URL "axs" parameter to choose appropriate action 3086 int axsParameterValue = getAxsUrlParameterValue(url); 3087 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3088 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3089 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3090 if (onDeviceScriptInjectionEnabled) { 3091 ensureAccessibilityScriptInjectorInstance(false); 3092 // neither script injected nor script injection opted out => we inject 3093 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3094 // TODO: Set this flag after successfull script injection. Maybe upon injection 3095 // the chooser should update the meta tag and we check it to declare success 3096 mAccessibilityScriptInjected = true; 3097 } else { 3098 // injection disabled so we fallback to the basic built-in support 3099 ensureAccessibilityScriptInjectorInstance(true); 3100 } 3101 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3102 // injection opted out so we fallback to the basic buil-in support 3103 ensureAccessibilityScriptInjectorInstance(true); 3104 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3105 ensureAccessibilityScriptInjectorInstance(false); 3106 // the URL provides accessibility but we still need to add our generic script 3107 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3108 } else { 3109 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3110 } 3111 } 3112 3113 /** 3114 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3115 * 3116 * @param present True to ensure an insance, false to ensure no instance. 3117 */ 3118 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3119 if (present && mAccessibilityInjector == null) { 3120 mAccessibilityInjector = new AccessibilityInjector(this); 3121 } else { 3122 mAccessibilityInjector = null; 3123 } 3124 } 3125 3126 /** 3127 * Gets the "axs" URL parameter value. 3128 * 3129 * @param url A url to fetch the paramter from. 3130 * @return The parameter value if such, -1 otherwise. 3131 */ 3132 private int getAxsUrlParameterValue(String url) { 3133 if (mMatchAxsUrlParameterPattern == null) { 3134 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3135 } 3136 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3137 if (matcher.find()) { 3138 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3139 return Integer.parseInt(keyValuePair.split("=")[1]); 3140 } 3141 return -1; 3142 } 3143 3144 /** 3145 * The URL of a page that sent a message to scroll the title bar off screen. 3146 * 3147 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3148 * title bar off the screen. Sometimes, the scroll position is set before 3149 * the page finishes loading. Rather than scrolling while the page is still 3150 * loading, keep track of the URL and new scroll position so we can perform 3151 * the scroll once the page finishes loading. 3152 */ 3153 private String mPageThatNeedsToSlideTitleBarOffScreen; 3154 3155 /** 3156 * The destination Y scroll position to be used when the page finishes 3157 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3158 */ 3159 private int mYDistanceToSlideTitleOffScreen; 3160 3161 // scale from content to view coordinates, and pin 3162 // return true if pin caused the final x/y different than the request cx/cy, 3163 // and a future scroll may reach the request cx/cy after our size has 3164 // changed 3165 // return false if the view scroll to the exact position as it is requested, 3166 // where negative numbers are taken to mean 0 3167 private boolean setContentScrollTo(int cx, int cy) { 3168 if (mDrawHistory) { 3169 // disallow WebView to change the scroll position as History Picture 3170 // is used in the view system. 3171 // One known case where this is called is that WebCore tries to 3172 // restore the scroll position. As history Picture already uses the 3173 // saved scroll position, it is ok to skip this. 3174 return false; 3175 } 3176 int vx; 3177 int vy; 3178 if ((cx | cy) == 0) { 3179 // If the page is being scrolled to (0,0), do not add in the title 3180 // bar's height, and simply scroll to (0,0). (The only other work 3181 // in contentToView_ is to multiply, so this would not change 0.) 3182 vx = 0; 3183 vy = 0; 3184 } else { 3185 vx = contentToViewX(cx); 3186 vy = contentToViewY(cy); 3187 } 3188// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3189// vx + " " + vy + "]"); 3190 // Some mobile sites attempt to scroll the title bar off the page by 3191 // scrolling to (0,1). If we are at the top left corner of the 3192 // page, assume this is an attempt to scroll off the title bar, and 3193 // animate the title bar off screen slowly enough that the user can see 3194 // it. 3195 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3196 && mTitleBar != null) { 3197 // FIXME: 100 should be defined somewhere as our max progress. 3198 if (getProgress() < 100) { 3199 // Wait to scroll the title bar off screen until the page has 3200 // finished loading. Keep track of the URL and the destination 3201 // Y position 3202 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3203 mYDistanceToSlideTitleOffScreen = vy; 3204 } else { 3205 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3206 } 3207 // Since we are animating, we have not yet reached the desired 3208 // scroll position. Do not return true to request another attempt 3209 return false; 3210 } 3211 pinScrollTo(vx, vy, false, 0); 3212 // If the request was to scroll to a negative coordinate, treat it as if 3213 // it was a request to scroll to 0 3214 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3215 return true; 3216 } else { 3217 return false; 3218 } 3219 } 3220 3221 // scale from content to view coordinates, and pin 3222 private void spawnContentScrollTo(int cx, int cy) { 3223 if (mDrawHistory) { 3224 // disallow WebView to change the scroll position as History Picture 3225 // is used in the view system. 3226 return; 3227 } 3228 int vx = contentToViewX(cx); 3229 int vy = contentToViewY(cy); 3230 pinScrollTo(vx, vy, true, 0); 3231 } 3232 3233 /** 3234 * These are from webkit, and are in content coordinate system (unzoomed) 3235 */ 3236 private void contentSizeChanged(boolean updateLayout) { 3237 // suppress 0,0 since we usually see real dimensions soon after 3238 // this avoids drawing the prev content in a funny place. If we find a 3239 // way to consolidate these notifications, this check may become 3240 // obsolete 3241 if ((mContentWidth | mContentHeight) == 0) { 3242 return; 3243 } 3244 3245 if (mHeightCanMeasure) { 3246 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3247 || updateLayout) { 3248 requestLayout(); 3249 } 3250 } else if (mWidthCanMeasure) { 3251 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3252 || updateLayout) { 3253 requestLayout(); 3254 } 3255 } else { 3256 // If we don't request a layout, try to send our view size to the 3257 // native side to ensure that WebCore has the correct dimensions. 3258 sendViewSizeZoom(false); 3259 } 3260 } 3261 3262 /** 3263 * Set the WebViewClient that will receive various notifications and 3264 * requests. This will replace the current handler. 3265 * @param client An implementation of WebViewClient. 3266 */ 3267 public void setWebViewClient(WebViewClient client) { 3268 mCallbackProxy.setWebViewClient(client); 3269 } 3270 3271 /** 3272 * Gets the WebViewClient 3273 * @return the current WebViewClient instance. 3274 * 3275 *@hide pending API council approval. 3276 */ 3277 public WebViewClient getWebViewClient() { 3278 return mCallbackProxy.getWebViewClient(); 3279 } 3280 3281 /** 3282 * Register the interface to be used when content can not be handled by 3283 * the rendering engine, and should be downloaded instead. This will replace 3284 * the current handler. 3285 * @param listener An implementation of DownloadListener. 3286 */ 3287 public void setDownloadListener(DownloadListener listener) { 3288 mCallbackProxy.setDownloadListener(listener); 3289 } 3290 3291 /** 3292 * Set the chrome handler. This is an implementation of WebChromeClient for 3293 * use in handling Javascript dialogs, favicons, titles, and the progress. 3294 * This will replace the current handler. 3295 * @param client An implementation of WebChromeClient. 3296 */ 3297 public void setWebChromeClient(WebChromeClient client) { 3298 mCallbackProxy.setWebChromeClient(client); 3299 } 3300 3301 /** 3302 * Gets the chrome handler. 3303 * @return the current WebChromeClient instance. 3304 * 3305 * @hide API council approval. 3306 */ 3307 public WebChromeClient getWebChromeClient() { 3308 return mCallbackProxy.getWebChromeClient(); 3309 } 3310 3311 /** 3312 * Set the back/forward list client. This is an implementation of 3313 * WebBackForwardListClient for handling new items and changes in the 3314 * history index. 3315 * @param client An implementation of WebBackForwardListClient. 3316 * {@hide} 3317 */ 3318 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3319 mCallbackProxy.setWebBackForwardListClient(client); 3320 } 3321 3322 /** 3323 * Gets the WebBackForwardListClient. 3324 * {@hide} 3325 */ 3326 public WebBackForwardListClient getWebBackForwardListClient() { 3327 return mCallbackProxy.getWebBackForwardListClient(); 3328 } 3329 3330 /** 3331 * Set the Picture listener. This is an interface used to receive 3332 * notifications of a new Picture. 3333 * @param listener An implementation of WebView.PictureListener. 3334 */ 3335 public void setPictureListener(PictureListener listener) { 3336 mPictureListener = listener; 3337 } 3338 3339 /** 3340 * {@hide} 3341 */ 3342 /* FIXME: Debug only! Remove for SDK! */ 3343 public void externalRepresentation(Message callback) { 3344 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3345 } 3346 3347 /** 3348 * {@hide} 3349 */ 3350 /* FIXME: Debug only! Remove for SDK! */ 3351 public void documentAsText(Message callback) { 3352 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3353 } 3354 3355 /** 3356 * Use this function to bind an object to Javascript so that the 3357 * methods can be accessed from Javascript. 3358 * <p><strong>IMPORTANT:</strong> 3359 * <ul> 3360 * <li> Using addJavascriptInterface() allows JavaScript to control your 3361 * application. This can be a very useful feature or a dangerous security 3362 * issue. When the HTML in the WebView is untrustworthy (for example, part 3363 * or all of the HTML is provided by some person or process), then an 3364 * attacker could inject HTML that will execute your code and possibly any 3365 * code of the attacker's choosing.<br> 3366 * Do not use addJavascriptInterface() unless all of the HTML in this 3367 * WebView was written by you.</li> 3368 * <li> The Java object that is bound runs in another thread and not in 3369 * the thread that it was constructed in.</li> 3370 * </ul></p> 3371 * @param obj The class instance to bind to Javascript 3372 * @param interfaceName The name to used to expose the class in Javascript 3373 */ 3374 public void addJavascriptInterface(Object obj, String interfaceName) { 3375 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3376 arg.mObject = obj; 3377 arg.mInterfaceName = interfaceName; 3378 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3379 } 3380 3381 /** 3382 * Return the WebSettings object used to control the settings for this 3383 * WebView. 3384 * @return A WebSettings object that can be used to control this WebView's 3385 * settings. 3386 */ 3387 public WebSettings getSettings() { 3388 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3389 } 3390 3391 /** 3392 * Return the list of currently loaded plugins. 3393 * @return The list of currently loaded plugins. 3394 * 3395 * @deprecated This was used for Gears, which has been deprecated. 3396 */ 3397 @Deprecated 3398 public static synchronized PluginList getPluginList() { 3399 return new PluginList(); 3400 } 3401 3402 /** 3403 * @deprecated This was used for Gears, which has been deprecated. 3404 */ 3405 @Deprecated 3406 public void refreshPlugins(boolean reloadOpenPages) { } 3407 3408 //------------------------------------------------------------------------- 3409 // Override View methods 3410 //------------------------------------------------------------------------- 3411 3412 @Override 3413 protected void finalize() throws Throwable { 3414 try { 3415 destroy(); 3416 } finally { 3417 super.finalize(); 3418 } 3419 } 3420 3421 @Override 3422 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3423 if (child == mTitleBar) { 3424 // When drawing the title bar, move it horizontally to always show 3425 // at the top of the WebView. 3426 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3427 } 3428 return super.drawChild(canvas, child, drawingTime); 3429 } 3430 3431 private void drawContent(Canvas canvas) { 3432 // Update the buttons in the picture, so when we draw the picture 3433 // to the screen, they are in the correct state. 3434 // Tell the native side if user is a) touching the screen, 3435 // b) pressing the trackball down, or c) pressing the enter key 3436 // If the cursor is on a button, we need to draw it in the pressed 3437 // state. 3438 // If mNativeClass is 0, we should not reach here, so we do not 3439 // need to check it again. 3440 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3441 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3442 || mTrackballDown || mGotCenterDown, false); 3443 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3444 } 3445 3446 @Override 3447 protected void onDraw(Canvas canvas) { 3448 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3449 if (mNativeClass == 0) { 3450 return; 3451 } 3452 3453 // if both mContentWidth and mContentHeight are 0, it means there is no 3454 // valid Picture passed to WebView yet. This can happen when WebView 3455 // just starts. Draw the background and return. 3456 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3457 canvas.drawColor(mBackgroundColor); 3458 return; 3459 } 3460 3461 int saveCount = canvas.save(); 3462 if (mTitleBar != null) { 3463 canvas.translate(0, (int) mTitleBar.getHeight()); 3464 } 3465 drawContent(canvas); 3466 canvas.restoreToCount(saveCount); 3467 3468 // Now draw the shadow. 3469 int titleH = getVisibleTitleHeight(); 3470 if (mTitleBar != null && titleH == 0) { 3471 int height = (int) (5f * getContext().getResources() 3472 .getDisplayMetrics().density); 3473 mTitleShadow.setBounds(mScrollX, mScrollY, mScrollX + getWidth(), 3474 mScrollY + height); 3475 mTitleShadow.draw(canvas); 3476 } 3477 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3478 invalidate(); 3479 } 3480 if (inEditingMode()) mWebTextView.onDrawSubstitute(); 3481 mWebViewCore.signalRepaintDone(); 3482 3483 // paint the highlight in the end 3484 if (!mTouchHighlightRegion.isEmpty()) { 3485 if (mTouchHightlightPaint == null) { 3486 mTouchHightlightPaint = new Paint(); 3487 mTouchHightlightPaint.setColor(mHightlightColor); 3488 mTouchHightlightPaint.setAntiAlias(true); 3489 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3490 TOUCH_HIGHLIGHT_ARC)); 3491 } 3492 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3493 mTouchHightlightPaint); 3494 } 3495 if (DEBUG_TOUCH_HIGHLIGHT) { 3496 if (getSettings().getNavDump()) { 3497 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3498 if (mTouchCrossHairColor == null) { 3499 mTouchCrossHairColor = new Paint(); 3500 mTouchCrossHairColor.setColor(Color.RED); 3501 } 3502 canvas.drawLine(mTouchHighlightX - mNavSlop, 3503 mTouchHighlightY - mNavSlop, mTouchHighlightX 3504 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3505 + 1, mTouchCrossHairColor); 3506 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3507 mTouchHighlightY - mNavSlop, mTouchHighlightX 3508 - mNavSlop, 3509 mTouchHighlightY + mNavSlop + 1, 3510 mTouchCrossHairColor); 3511 } 3512 } 3513 } 3514 } 3515 3516 private void removeTouchHighlight(boolean removePendingMessage) { 3517 if (removePendingMessage) { 3518 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3519 } 3520 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3521 } 3522 3523 @Override 3524 public void setLayoutParams(ViewGroup.LayoutParams params) { 3525 if (params.height == LayoutParams.WRAP_CONTENT) { 3526 mWrapContent = true; 3527 } 3528 super.setLayoutParams(params); 3529 } 3530 3531 @Override 3532 public boolean performLongClick() { 3533 // performLongClick() is the result of a delayed message. If we switch 3534 // to windows overview, the WebView will be temporarily removed from the 3535 // view system. In that case, do nothing. 3536 if (getParent() == null) return false; 3537 3538 // A multi-finger gesture can look like a long press; make sure we don't take 3539 // long press actions if we're scaling. 3540 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3541 if (detector != null && detector.isInProgress()) { 3542 return false; 3543 } 3544 3545 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3546 // Send the click so that the textfield is in focus 3547 centerKeyPressOnTextField(); 3548 rebuildWebTextView(); 3549 } else { 3550 clearTextEntry(); 3551 } 3552 if (inEditingMode()) { 3553 return mWebTextView.performLongClick(); 3554 } 3555 /* if long click brings up a context menu, the super function 3556 * returns true and we're done. Otherwise, nothing happened when 3557 * the user clicked. */ 3558 if (super.performLongClick()) { 3559 return true; 3560 } 3561 /* In the case where the application hasn't already handled the long 3562 * click action, look for a word under the click. If one is found, 3563 * animate the text selection into view. 3564 * FIXME: no animation code yet */ 3565 if (mSelectingText) return false; // long click does nothing on selection 3566 int x = viewToContentX((int) mLastTouchX + mScrollX); 3567 int y = viewToContentY((int) mLastTouchY + mScrollY); 3568 setUpSelect(); 3569 if (mNativeClass != 0 && nativeWordSelection(x, y)) { 3570 nativeSetExtendSelection(); 3571 return true; 3572 } 3573 selectionDone(); 3574 return false; 3575 } 3576 3577 /** 3578 * Keep track of the Callback so we can end its ActionMode or remove its 3579 * titlebar. 3580 */ 3581 private SelectActionModeCallback mSelectCallback; 3582 3583 private boolean didUpdateTextViewBounds(boolean allowIntersect) { 3584 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3585 Rect vBox = contentToViewRect(contentBounds); 3586 Rect visibleRect = new Rect(); 3587 calcOurVisibleRect(visibleRect); 3588 // If the textfield is on screen, place the WebTextView in 3589 // its new place, accounting for our new scroll/zoom values, 3590 // and adjust its textsize. 3591 if (allowIntersect ? Rect.intersects(visibleRect, vBox) 3592 : visibleRect.contains(vBox)) { 3593 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 3594 vBox.height()); 3595 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3596 contentToViewDimension( 3597 nativeFocusCandidateTextSize())); 3598 return true; 3599 } else { 3600 // The textfield is now off screen. The user probably 3601 // was not zooming to see the textfield better. Remove 3602 // the WebTextView. If the user types a key, and the 3603 // textfield is still in focus, we will reconstruct 3604 // the WebTextView and scroll it back on screen. 3605 mWebTextView.remove(); 3606 return false; 3607 } 3608 } 3609 3610 void setBaseLayer(int layer, Rect invalRect) { 3611 if (mNativeClass == 0) 3612 return; 3613 if (invalRect == null) { 3614 Rect rect = new Rect(0, 0, mContentWidth, mContentHeight); 3615 nativeSetBaseLayer(layer, rect); 3616 } else { 3617 nativeSetBaseLayer(layer, invalRect); 3618 } 3619 } 3620 3621 private void onZoomAnimationStart() { 3622 // If it is in password mode, turn it off so it does not draw misplaced. 3623 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 3624 mWebTextView.setInPassword(false); 3625 } 3626 } 3627 3628 private void onZoomAnimationEnd() { 3629 // adjust the edit text view if needed 3630 if (inEditingMode() && didUpdateTextViewBounds(false) && nativeFocusCandidateIsPassword()) { 3631 // If it is a password field, start drawing the WebTextView once 3632 // again. 3633 mWebTextView.setInPassword(true); 3634 } 3635 } 3636 3637 void onFixedLengthZoomAnimationStart() { 3638 WebViewCore.pauseUpdatePicture(getWebViewCore()); 3639 onZoomAnimationStart(); 3640 } 3641 3642 void onFixedLengthZoomAnimationEnd() { 3643 WebViewCore.resumeUpdatePicture(mWebViewCore); 3644 onZoomAnimationEnd(); 3645 } 3646 3647 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 3648 Paint.DITHER_FLAG | 3649 Paint.SUBPIXEL_TEXT_FLAG; 3650 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 3651 Paint.DITHER_FLAG; 3652 3653 private final DrawFilter mZoomFilter = 3654 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 3655 // If we need to trade better quality for speed, set mScrollFilter to null 3656 private final DrawFilter mScrollFilter = 3657 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 3658 3659 private void drawCoreAndCursorRing(Canvas canvas, int color, 3660 boolean drawCursorRing) { 3661 if (mDrawHistory) { 3662 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3663 canvas.drawPicture(mHistoryPicture); 3664 return; 3665 } 3666 if (mNativeClass == 0) return; 3667 3668 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 3669 boolean animateScroll = ((!mScroller.isFinished() 3670 || mVelocityTracker != null) 3671 && (mTouchMode != TOUCH_DRAG_MODE || 3672 mHeldMotionless != MOTIONLESS_TRUE)) 3673 || mDeferTouchMode == TOUCH_DRAG_MODE; 3674 if (mTouchMode == TOUCH_DRAG_MODE) { 3675 if (mHeldMotionless == MOTIONLESS_PENDING) { 3676 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 3677 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 3678 mHeldMotionless = MOTIONLESS_FALSE; 3679 } 3680 if (mHeldMotionless == MOTIONLESS_FALSE) { 3681 mPrivateHandler.sendMessageDelayed(mPrivateHandler 3682 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 3683 mHeldMotionless = MOTIONLESS_PENDING; 3684 } 3685 } 3686 if (animateZoom) { 3687 mZoomManager.animateZoom(canvas); 3688 } else { 3689 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 3690 } 3691 3692 boolean UIAnimationsRunning = false; 3693 // Currently for each draw we compute the animation values; 3694 // We may in the future decide to do that independently. 3695 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 3696 UIAnimationsRunning = true; 3697 // If we have unfinished (or unstarted) animations, 3698 // we ask for a repaint. 3699 invalidate(); 3700 } 3701 3702 // decide which adornments to draw 3703 int extras = DRAW_EXTRAS_NONE; 3704 if (DebugFlags.WEB_VIEW) { 3705 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 3706 + " mSelectingText=" + mSelectingText 3707 + " nativePageShouldHandleShiftAndArrows()=" 3708 + nativePageShouldHandleShiftAndArrows() 3709 + " animateZoom=" + animateZoom); 3710 } 3711 if (mFindIsUp) { 3712 extras = DRAW_EXTRAS_FIND; 3713 } else if (mSelectingText) { 3714 extras = DRAW_EXTRAS_SELECTION; 3715 nativeSetSelectionPointer(mDrawSelectionPointer, 3716 mZoomManager.getInvScale(), 3717 mSelectX, mSelectY - getTitleHeight()); 3718 } else if (drawCursorRing) { 3719 extras = DRAW_EXTRAS_CURSOR_RING; 3720 } 3721 3722 if (canvas.isHardwareAccelerated()) { 3723 try { 3724 if (canvas.acquireContext()) { 3725 Rect rect = new Rect(mGLRectViewport.left, 3726 mGLRectViewport.top, 3727 mGLRectViewport.right, 3728 mGLRectViewport.bottom 3729 - getVisibleTitleHeight()); 3730 if (nativeDrawGL(rect, getScale(), extras)) { 3731 invalidate(); 3732 } 3733 } 3734 } finally { 3735 canvas.releaseContext(); 3736 } 3737 } else { 3738 DrawFilter df = null; 3739 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 3740 df = mZoomFilter; 3741 } else if (animateScroll) { 3742 df = mScrollFilter; 3743 } 3744 canvas.setDrawFilter(df); 3745 int content = nativeDraw(canvas, color, extras, true); 3746 canvas.setDrawFilter(null); 3747 if (content != 0) { 3748 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 3749 } 3750 } 3751 3752 if (extras == DRAW_EXTRAS_CURSOR_RING) { 3753 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 3754 mTouchMode = TOUCH_SHORTPRESS_MODE; 3755 } 3756 } 3757 if (mFocusSizeChanged) { 3758 mFocusSizeChanged = false; 3759 // If we are zooming, this will get handled above, when the zoom 3760 // finishes. We also do not need to do this unless the WebTextView 3761 // is showing. 3762 if (!animateZoom && inEditingMode()) { 3763 didUpdateTextViewBounds(true); 3764 } 3765 } 3766 } 3767 3768 // draw history 3769 private boolean mDrawHistory = false; 3770 private Picture mHistoryPicture = null; 3771 private int mHistoryWidth = 0; 3772 private int mHistoryHeight = 0; 3773 3774 // Only check the flag, can be called from WebCore thread 3775 boolean drawHistory() { 3776 return mDrawHistory; 3777 } 3778 3779 int getHistoryPictureWidth() { 3780 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 3781 } 3782 3783 // Should only be called in UI thread 3784 void switchOutDrawHistory() { 3785 if (null == mWebViewCore) return; // CallbackProxy may trigger this 3786 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 3787 mDrawHistory = false; 3788 mHistoryPicture = null; 3789 invalidate(); 3790 int oldScrollX = mScrollX; 3791 int oldScrollY = mScrollY; 3792 mScrollX = pinLocX(mScrollX); 3793 mScrollY = pinLocY(mScrollY); 3794 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 3795 mUserScroll = false; 3796 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, oldScrollX, 3797 oldScrollY); 3798 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 3799 } else { 3800 sendOurVisibleRect(); 3801 } 3802 } 3803 } 3804 3805 WebViewCore.CursorData cursorData() { 3806 WebViewCore.CursorData result = new WebViewCore.CursorData(); 3807 result.mMoveGeneration = nativeMoveGeneration(); 3808 result.mFrame = nativeCursorFramePointer(); 3809 Point position = nativeCursorPosition(); 3810 result.mX = position.x; 3811 result.mY = position.y; 3812 return result; 3813 } 3814 3815 /** 3816 * Delete text from start to end in the focused textfield. If there is no 3817 * focus, or if start == end, silently fail. If start and end are out of 3818 * order, swap them. 3819 * @param start Beginning of selection to delete. 3820 * @param end End of selection to delete. 3821 */ 3822 /* package */ void deleteSelection(int start, int end) { 3823 mTextGeneration++; 3824 WebViewCore.TextSelectionData data 3825 = new WebViewCore.TextSelectionData(start, end); 3826 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 3827 data); 3828 } 3829 3830 /** 3831 * Set the selection to (start, end) in the focused textfield. If start and 3832 * end are out of order, swap them. 3833 * @param start Beginning of selection. 3834 * @param end End of selection. 3835 */ 3836 /* package */ void setSelection(int start, int end) { 3837 if (mWebViewCore != null) { 3838 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 3839 } 3840 } 3841 3842 @Override 3843 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 3844 InputConnection connection = super.onCreateInputConnection(outAttrs); 3845 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 3846 return connection; 3847 } 3848 3849 /** 3850 * Called in response to a message from webkit telling us that the soft 3851 * keyboard should be launched. 3852 */ 3853 private void displaySoftKeyboard(boolean isTextView) { 3854 InputMethodManager imm = (InputMethodManager) 3855 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 3856 3857 // bring it back to the default level scale so that user can enter text 3858 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 3859 if (zoom) { 3860 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 3861 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 3862 } 3863 if (isTextView) { 3864 rebuildWebTextView(); 3865 if (inEditingMode()) { 3866 imm.showSoftInput(mWebTextView, 0); 3867 if (zoom) { 3868 didUpdateTextViewBounds(true); 3869 } 3870 return; 3871 } 3872 } 3873 // Used by plugins and contentEditable. 3874 // Also used if the navigation cache is out of date, and 3875 // does not recognize that a textfield is in focus. In that 3876 // case, use WebView as the targeted view. 3877 // see http://b/issue?id=2457459 3878 imm.showSoftInput(this, 0); 3879 } 3880 3881 // Called by WebKit to instruct the UI to hide the keyboard 3882 private void hideSoftKeyboard() { 3883 InputMethodManager imm = InputMethodManager.peekInstance(); 3884 if (imm != null && (imm.isActive(this) 3885 || (inEditingMode() && imm.isActive(mWebTextView)))) { 3886 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 3887 } 3888 } 3889 3890 /* 3891 * This method checks the current focus and cursor and potentially rebuilds 3892 * mWebTextView to have the appropriate properties, such as password, 3893 * multiline, and what text it contains. It also removes it if necessary. 3894 */ 3895 /* package */ void rebuildWebTextView() { 3896 // If the WebView does not have focus, do nothing until it gains focus. 3897 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 3898 return; 3899 } 3900 boolean alreadyThere = inEditingMode(); 3901 // inEditingMode can only return true if mWebTextView is non-null, 3902 // so we can safely call remove() if (alreadyThere) 3903 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 3904 if (alreadyThere) { 3905 mWebTextView.remove(); 3906 } 3907 return; 3908 } 3909 // At this point, we know we have found an input field, so go ahead 3910 // and create the WebTextView if necessary. 3911 if (mWebTextView == null) { 3912 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillQueryId); 3913 // Initialize our generation number. 3914 mTextGeneration = 0; 3915 } 3916 mWebTextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, 3917 contentToViewDimension(nativeFocusCandidateTextSize())); 3918 Rect visibleRect = new Rect(); 3919 calcOurContentVisibleRect(visibleRect); 3920 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 3921 // should be in content coordinates. 3922 Rect bounds = nativeFocusCandidateNodeBounds(); 3923 Rect vBox = contentToViewRect(bounds); 3924 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 3925 if (!Rect.intersects(bounds, visibleRect)) { 3926 mWebTextView.bringIntoView(); 3927 } 3928 String text = nativeFocusCandidateText(); 3929 int nodePointer = nativeFocusCandidatePointer(); 3930 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 3931 // It is possible that we have the same textfield, but it has moved, 3932 // i.e. In the case of opening/closing the screen. 3933 // In that case, we need to set the dimensions, but not the other 3934 // aspects. 3935 // If the text has been changed by webkit, update it. However, if 3936 // there has been more UI text input, ignore it. We will receive 3937 // another update when that text is recognized. 3938 if (text != null && !text.equals(mWebTextView.getText().toString()) 3939 && nativeTextGeneration() == mTextGeneration) { 3940 mWebTextView.setTextAndKeepSelection(text); 3941 } 3942 } else { 3943 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 3944 Gravity.RIGHT : Gravity.NO_GRAVITY); 3945 // This needs to be called before setType, which may call 3946 // requestFormData, and it needs to have the correct nodePointer. 3947 mWebTextView.setNodePointer(nodePointer); 3948 mWebTextView.setType(nativeFocusCandidateType()); 3949 Rect paddingRect = nativeFocusCandidatePaddingRect(); 3950 if (paddingRect != null) { 3951 // Use contentToViewDimension since these are the dimensions of 3952 // the padding. 3953 mWebTextView.setPadding( 3954 contentToViewDimension(paddingRect.left), 3955 contentToViewDimension(paddingRect.top), 3956 contentToViewDimension(paddingRect.right), 3957 contentToViewDimension(paddingRect.bottom)); 3958 } 3959 if (null == text) { 3960 if (DebugFlags.WEB_VIEW) { 3961 Log.v(LOGTAG, "rebuildWebTextView null == text"); 3962 } 3963 text = ""; 3964 } 3965 mWebTextView.setTextAndKeepSelection(text); 3966 InputMethodManager imm = InputMethodManager.peekInstance(); 3967 if (imm != null && imm.isActive(mWebTextView)) { 3968 imm.restartInput(mWebTextView); 3969 } 3970 } 3971 if (isFocused()) { 3972 mWebTextView.requestFocus(); 3973 } 3974 } 3975 3976 /** 3977 * Tell webkit to put the cursor on screen. 3978 */ 3979 /* package */ void revealSelection() { 3980 if (mWebViewCore != null) { 3981 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 3982 } 3983 } 3984 3985 /** 3986 * Called by WebTextView to find saved form data associated with the 3987 * textfield 3988 * @param name Name of the textfield. 3989 * @param nodePointer Pointer to the node of the textfield, so it can be 3990 * compared to the currently focused textfield when the data is 3991 * retrieved. 3992 * @param autoFillable true if WebKit has determined this field is part of 3993 * a form that can be auto filled. 3994 */ 3995 /* package */ void requestFormData(String name, int nodePointer, boolean autoFillable) { 3996 if (mWebViewCore.getSettings().getSaveFormData()) { 3997 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 3998 update.arg1 = nodePointer; 3999 RequestFormData updater = new RequestFormData(name, getUrl(), 4000 update, autoFillable); 4001 Thread t = new Thread(updater); 4002 t.start(); 4003 } 4004 } 4005 4006 /** 4007 * Pass a message to find out the <label> associated with the <input> 4008 * identified by nodePointer 4009 * @param framePointer Pointer to the frame containing the <input> node 4010 * @param nodePointer Pointer to the node for which a <label> is desired. 4011 */ 4012 /* package */ void requestLabel(int framePointer, int nodePointer) { 4013 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4014 nodePointer); 4015 } 4016 4017 /* 4018 * This class requests an Adapter for the WebTextView which shows past 4019 * entries stored in the database. It is a Runnable so that it can be done 4020 * in its own thread, without slowing down the UI. 4021 */ 4022 private class RequestFormData implements Runnable { 4023 private String mName; 4024 private String mUrl; 4025 private Message mUpdateMessage; 4026 private boolean mAutoFillable; 4027 4028 public RequestFormData(String name, String url, Message msg, boolean autoFillable) { 4029 mName = name; 4030 mUrl = url; 4031 mUpdateMessage = msg; 4032 mAutoFillable = autoFillable; 4033 } 4034 4035 public void run() { 4036 ArrayList<String> pastEntries = new ArrayList(); 4037 4038 if (mAutoFillable) { 4039 // Note that code inside the adapter click handler in WebTextView depends 4040 // on the AutoFill item being at the top of the drop down list. If you change 4041 // the order, make sure to do it there too! 4042 pastEntries.add(getResources().getText( 4043 com.android.internal.R.string.autofill_this_form).toString()); 4044 } 4045 4046 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4047 4048 if (pastEntries.size() > 0) { 4049 AutoCompleteAdapter adapter = new 4050 AutoCompleteAdapter(mContext, pastEntries); 4051 mUpdateMessage.obj = adapter; 4052 mUpdateMessage.sendToTarget(); 4053 } 4054 } 4055 } 4056 4057 /** 4058 * Dump the display tree to "/sdcard/displayTree.txt" 4059 * 4060 * @hide debug only 4061 */ 4062 public void dumpDisplayTree() { 4063 nativeDumpDisplayTree(getUrl()); 4064 } 4065 4066 /** 4067 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4068 * "/sdcard/domTree.txt" 4069 * 4070 * @hide debug only 4071 */ 4072 public void dumpDomTree(boolean toFile) { 4073 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4074 } 4075 4076 /** 4077 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4078 * to "/sdcard/renderTree.txt" 4079 * 4080 * @hide debug only 4081 */ 4082 public void dumpRenderTree(boolean toFile) { 4083 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4084 } 4085 4086 /** 4087 * Called by DRT on UI thread, need to proxy to WebCore thread. 4088 * 4089 * @hide debug only 4090 */ 4091 public void useMockDeviceOrientation() { 4092 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4093 } 4094 4095 /** 4096 * Called by DRT on WebCore thread. 4097 * 4098 * @hide debug only 4099 */ 4100 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4101 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4102 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4103 canProvideGamma, gamma); 4104 } 4105 4106 /** 4107 * Dump the V8 counters to standard output. 4108 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4109 * true. Otherwise, this will do nothing. 4110 * 4111 * @hide debug only 4112 */ 4113 public void dumpV8Counters() { 4114 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4115 } 4116 4117 // This is used to determine long press with the center key. Does not 4118 // affect long press with the trackball/touch. 4119 private boolean mGotCenterDown = false; 4120 4121 @Override 4122 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4123 // send complex characters to webkit for use by JS and plugins 4124 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4125 // pass the key to DOM 4126 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4127 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4128 // return true as DOM handles the key 4129 return true; 4130 } 4131 return false; 4132 } 4133 4134 @Override 4135 public boolean onKeyDown(int keyCode, KeyEvent event) { 4136 if (DebugFlags.WEB_VIEW) { 4137 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4138 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4139 } 4140 4141 if (mNativeClass == 0) { 4142 return false; 4143 } 4144 4145 // do this hack up front, so it always works, regardless of touch-mode 4146 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4147 mAutoRedraw = !mAutoRedraw; 4148 if (mAutoRedraw) { 4149 invalidate(); 4150 } 4151 return true; 4152 } 4153 4154 // Bubble up the key event if 4155 // 1. it is a system key; or 4156 // 2. the host application wants to handle it; 4157 // 3. the accessibility injector is present and wants to handle it; 4158 if (event.isSystem() 4159 || mCallbackProxy.uiOverrideKeyEvent(event) 4160 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4161 return false; 4162 } 4163 4164 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4165 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4166 if (pageShouldHandleShiftAndArrows()) { 4167 mShiftIsPressed = true; 4168 } else if (!nativeCursorWantsKeyEvents() && !mSelectingText) { 4169 setUpSelect(); 4170 } 4171 } 4172 4173 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4174 pageUp(false); 4175 return true; 4176 } 4177 4178 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4179 pageDown(false); 4180 return true; 4181 } 4182 4183 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4184 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4185 switchOutDrawHistory(); 4186 if (pageShouldHandleShiftAndArrows()) { 4187 letPageHandleNavKey(keyCode, event.getEventTime(), true); 4188 return true; 4189 } 4190 if (mSelectingText) { 4191 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4192 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4193 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4194 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4195 int multiplier = event.getRepeatCount() + 1; 4196 moveSelection(xRate * multiplier, yRate * multiplier); 4197 return true; 4198 } 4199 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4200 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4201 return true; 4202 } 4203 // Bubble up the key event as WebView doesn't handle it 4204 return false; 4205 } 4206 4207 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4208 switchOutDrawHistory(); 4209 if (event.getRepeatCount() == 0) { 4210 if (mSelectingText) { 4211 return true; // discard press if copy in progress 4212 } 4213 mGotCenterDown = true; 4214 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4215 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4216 // Already checked mNativeClass, so we do not need to check it 4217 // again. 4218 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4219 return true; 4220 } 4221 // Bubble up the key event as WebView doesn't handle it 4222 return false; 4223 } 4224 4225 if (keyCode != KeyEvent.KEYCODE_SHIFT_LEFT 4226 && keyCode != KeyEvent.KEYCODE_SHIFT_RIGHT) { 4227 // turn off copy select if a shift-key combo is pressed 4228 selectionDone(); 4229 mShiftIsPressed = false; 4230 } 4231 4232 if (getSettings().getNavDump()) { 4233 switch (keyCode) { 4234 case KeyEvent.KEYCODE_4: 4235 dumpDisplayTree(); 4236 break; 4237 case KeyEvent.KEYCODE_5: 4238 case KeyEvent.KEYCODE_6: 4239 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4240 break; 4241 case KeyEvent.KEYCODE_7: 4242 case KeyEvent.KEYCODE_8: 4243 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4244 break; 4245 case KeyEvent.KEYCODE_9: 4246 nativeInstrumentReport(); 4247 return true; 4248 } 4249 } 4250 4251 if (nativeCursorIsTextInput()) { 4252 // This message will put the node in focus, for the DOM's notion 4253 // of focus, and make the focuscontroller active 4254 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 4255 nativeCursorNodePointer()); 4256 // This will bring up the WebTextView and put it in focus, for 4257 // our view system's notion of focus 4258 rebuildWebTextView(); 4259 // Now we need to pass the event to it 4260 if (inEditingMode()) { 4261 mWebTextView.setDefaultSelection(); 4262 return mWebTextView.dispatchKeyEvent(event); 4263 } 4264 } else if (nativeHasFocusNode()) { 4265 // In this case, the cursor is not on a text input, but the focus 4266 // might be. Check it, and if so, hand over to the WebTextView. 4267 rebuildWebTextView(); 4268 if (inEditingMode()) { 4269 mWebTextView.setDefaultSelection(); 4270 return mWebTextView.dispatchKeyEvent(event); 4271 } 4272 } 4273 4274 // TODO: should we pass all the keys to DOM or check the meta tag 4275 if (nativeCursorWantsKeyEvents() || true) { 4276 // pass the key to DOM 4277 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4278 // return true as DOM handles the key 4279 return true; 4280 } 4281 4282 // Bubble up the key event as WebView doesn't handle it 4283 return false; 4284 } 4285 4286 @Override 4287 public boolean onKeyUp(int keyCode, KeyEvent event) { 4288 if (DebugFlags.WEB_VIEW) { 4289 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4290 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4291 } 4292 4293 if (mNativeClass == 0) { 4294 return false; 4295 } 4296 4297 // special CALL handling when cursor node's href is "tel:XXX" 4298 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4299 String text = nativeCursorText(); 4300 if (!nativeCursorIsTextInput() && text != null 4301 && text.startsWith(SCHEME_TEL)) { 4302 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4303 getContext().startActivity(intent); 4304 return true; 4305 } 4306 } 4307 4308 // Bubble up the key event if 4309 // 1. it is a system key; or 4310 // 2. the host application wants to handle it; 4311 // 3. the accessibility injector is present and wants to handle it; 4312 if (event.isSystem() 4313 || mCallbackProxy.uiOverrideKeyEvent(event) 4314 || (mAccessibilityInjector != null && mAccessibilityInjector.onKeyEvent(event))) { 4315 return false; 4316 } 4317 4318 if (keyCode == KeyEvent.KEYCODE_SHIFT_LEFT 4319 || keyCode == KeyEvent.KEYCODE_SHIFT_RIGHT) { 4320 if (pageShouldHandleShiftAndArrows()) { 4321 mShiftIsPressed = false; 4322 } else if (copySelection()) { 4323 selectionDone(); 4324 return true; 4325 } 4326 } 4327 4328 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4329 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4330 if (pageShouldHandleShiftAndArrows()) { 4331 letPageHandleNavKey(keyCode, event.getEventTime(), false); 4332 return true; 4333 } 4334 // always handle the navigation keys in the UI thread 4335 // Bubble up the key event as WebView doesn't handle it 4336 return false; 4337 } 4338 4339 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4340 // remove the long press message first 4341 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4342 mGotCenterDown = false; 4343 4344 if (mSelectingText) { 4345 if (mExtendSelection) { 4346 copySelection(); 4347 selectionDone(); 4348 } else { 4349 mExtendSelection = true; 4350 nativeSetExtendSelection(); 4351 invalidate(); // draw the i-beam instead of the arrow 4352 } 4353 return true; // discard press if copy in progress 4354 } 4355 4356 // perform the single click 4357 Rect visibleRect = sendOurVisibleRect(); 4358 // Note that sendOurVisibleRect calls viewToContent, so the 4359 // coordinates should be in content coordinates. 4360 if (!nativeCursorIntersects(visibleRect)) { 4361 return false; 4362 } 4363 WebViewCore.CursorData data = cursorData(); 4364 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4365 playSoundEffect(SoundEffectConstants.CLICK); 4366 if (nativeCursorIsTextInput()) { 4367 rebuildWebTextView(); 4368 centerKeyPressOnTextField(); 4369 if (inEditingMode()) { 4370 mWebTextView.setDefaultSelection(); 4371 } 4372 return true; 4373 } 4374 clearTextEntry(); 4375 nativeShowCursorTimed(); 4376 if (!mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4377 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4378 nativeCursorNodePointer()); 4379 } 4380 return true; 4381 } 4382 4383 // TODO: should we pass all the keys to DOM or check the meta tag 4384 if (nativeCursorWantsKeyEvents() || true) { 4385 // pass the key to DOM 4386 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4387 // return true as DOM handles the key 4388 return true; 4389 } 4390 4391 // Bubble up the key event as WebView doesn't handle it 4392 return false; 4393 } 4394 4395 private void setUpSelect() { 4396 if (0 == mNativeClass) return; // client isn't initialized 4397 if (inFullScreenMode()) return; 4398 if (mSelectingText) return; 4399 mExtendSelection = false; 4400 mSelectingText = mDrawSelectionPointer = true; 4401 // don't let the picture change during text selection 4402 WebViewCore.pauseUpdatePicture(mWebViewCore); 4403 nativeResetSelection(); 4404 if (nativeHasCursorNode()) { 4405 Rect rect = nativeCursorNodeBounds(); 4406 mSelectX = contentToViewX(rect.left); 4407 mSelectY = contentToViewY(rect.top); 4408 } else if (mLastTouchY > getVisibleTitleHeight()) { 4409 mSelectX = mScrollX + (int) mLastTouchX; 4410 mSelectY = mScrollY + (int) mLastTouchY; 4411 } else { 4412 mSelectX = mScrollX + getViewWidth() / 2; 4413 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4414 } 4415 nativeHideCursor(); 4416 mSelectCallback = new SelectActionModeCallback(); 4417 mSelectCallback.setWebView(this); 4418 View titleBar = mTitleBar; 4419 // We do not want to show the embedded title bar during find or 4420 // select, but keep track of it so that it can be replaced when the 4421 // mode is exited. 4422 setEmbeddedTitleBar(null); 4423 mSelectCallback.setTitleBar(titleBar); 4424 startActionMode(mSelectCallback); 4425 } 4426 4427 /** 4428 * Use this method to put the WebView into text selection mode. 4429 * Do not rely on this functionality; it will be deprecated in the future. 4430 */ 4431 public void emulateShiftHeld() { 4432 setUpSelect(); 4433 } 4434 4435 /** 4436 * Select all of the text in this WebView. 4437 */ 4438 void selectAll() { 4439 if (0 == mNativeClass) return; // client isn't initialized 4440 if (inFullScreenMode()) return; 4441 if (!mSelectingText) setUpSelect(); 4442 nativeSelectAll(); 4443 mDrawSelectionPointer = false; 4444 mExtendSelection = true; 4445 invalidate(); 4446 } 4447 4448 /** 4449 * Called when the selection has been removed. 4450 */ 4451 void selectionDone() { 4452 if (mSelectingText) { 4453 mSelectingText = false; 4454 // finish is idempotent, so this is fine even if selectionDone was 4455 // called by mSelectCallback.onDestroyActionMode 4456 mSelectCallback.finish(); 4457 mSelectCallback = null; 4458 WebViewCore.resumeUpdatePicture(mWebViewCore); 4459 invalidate(); // redraw without selection 4460 } 4461 } 4462 4463 /** 4464 * Copy the selection to the clipboard 4465 */ 4466 boolean copySelection() { 4467 boolean copiedSomething = false; 4468 String selection = getSelection(); 4469 if (selection != "") { 4470 if (DebugFlags.WEB_VIEW) { 4471 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 4472 } 4473 Toast.makeText(mContext 4474 , com.android.internal.R.string.text_copied 4475 , Toast.LENGTH_SHORT).show(); 4476 copiedSomething = true; 4477 ClipboardManager cm = (ClipboardManager)getContext() 4478 .getSystemService(Context.CLIPBOARD_SERVICE); 4479 cm.setText(selection); 4480 } 4481 invalidate(); // remove selection region and pointer 4482 return copiedSomething; 4483 } 4484 4485 /** 4486 * Returns the currently highlighted text as a string. 4487 */ 4488 String getSelection() { 4489 if (mNativeClass == 0) return ""; 4490 return nativeGetSelection(); 4491 } 4492 4493 @Override 4494 protected void onAttachedToWindow() { 4495 super.onAttachedToWindow(); 4496 if (hasWindowFocus()) setActive(true); 4497 } 4498 4499 @Override 4500 protected void onDetachedFromWindow() { 4501 clearHelpers(); 4502 mZoomManager.dismissZoomPicker(); 4503 if (hasWindowFocus()) setActive(false); 4504 super.onDetachedFromWindow(); 4505 } 4506 4507 @Override 4508 protected void onVisibilityChanged(View changedView, int visibility) { 4509 super.onVisibilityChanged(changedView, visibility); 4510 // The zoomManager may be null if the webview is created from XML that 4511 // specifies the view's visibility param as not visible (see http://b/2794841) 4512 if (visibility != View.VISIBLE && mZoomManager != null) { 4513 mZoomManager.dismissZoomPicker(); 4514 } 4515 } 4516 4517 /** 4518 * @deprecated WebView no longer needs to implement 4519 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4520 */ 4521 @Deprecated 4522 public void onChildViewAdded(View parent, View child) {} 4523 4524 /** 4525 * @deprecated WebView no longer needs to implement 4526 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 4527 */ 4528 @Deprecated 4529 public void onChildViewRemoved(View p, View child) {} 4530 4531 /** 4532 * @deprecated WebView should not have implemented 4533 * ViewTreeObserver.OnGlobalFocusChangeListener. This method 4534 * does nothing now. 4535 */ 4536 @Deprecated 4537 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 4538 } 4539 4540 private void setActive(boolean active) { 4541 if (active) { 4542 if (hasFocus()) { 4543 // If our window regained focus, and we have focus, then begin 4544 // drawing the cursor ring 4545 mDrawCursorRing = true; 4546 setFocusControllerActive(true); 4547 if (mNativeClass != 0) { 4548 nativeRecordButtons(true, false, true); 4549 } 4550 } else { 4551 if (!inEditingMode()) { 4552 // If our window gained focus, but we do not have it, do not 4553 // draw the cursor ring. 4554 mDrawCursorRing = false; 4555 setFocusControllerActive(false); 4556 } 4557 // We do not call nativeRecordButtons here because we assume 4558 // that when we lost focus, or window focus, it got called with 4559 // false for the first parameter 4560 } 4561 } else { 4562 if (!mZoomManager.isZoomPickerVisible()) { 4563 /* 4564 * The external zoom controls come in their own window, so our 4565 * window loses focus. Our policy is to not draw the cursor ring 4566 * if our window is not focused, but this is an exception since 4567 * the user can still navigate the web page with the zoom 4568 * controls showing. 4569 */ 4570 mDrawCursorRing = false; 4571 } 4572 mGotKeyDown = false; 4573 mShiftIsPressed = false; 4574 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4575 mTouchMode = TOUCH_DONE_MODE; 4576 if (mNativeClass != 0) { 4577 nativeRecordButtons(false, false, true); 4578 } 4579 setFocusControllerActive(false); 4580 } 4581 invalidate(); 4582 } 4583 4584 // To avoid drawing the cursor ring, and remove the TextView when our window 4585 // loses focus. 4586 @Override 4587 public void onWindowFocusChanged(boolean hasWindowFocus) { 4588 setActive(hasWindowFocus); 4589 if (hasWindowFocus) { 4590 JWebCoreJavaBridge.setActiveWebView(this); 4591 } else { 4592 JWebCoreJavaBridge.removeActiveWebView(this); 4593 } 4594 super.onWindowFocusChanged(hasWindowFocus); 4595 } 4596 4597 /* 4598 * Pass a message to WebCore Thread, telling the WebCore::Page's 4599 * FocusController to be "inactive" so that it will 4600 * not draw the blinking cursor. It gets set to "active" to draw the cursor 4601 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 4602 */ 4603 /* package */ void setFocusControllerActive(boolean active) { 4604 if (mWebViewCore == null) return; 4605 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 4606 } 4607 4608 @Override 4609 protected void onFocusChanged(boolean focused, int direction, 4610 Rect previouslyFocusedRect) { 4611 if (DebugFlags.WEB_VIEW) { 4612 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 4613 } 4614 if (focused) { 4615 // When we regain focus, if we have window focus, resume drawing 4616 // the cursor ring 4617 if (hasWindowFocus()) { 4618 mDrawCursorRing = true; 4619 if (mNativeClass != 0) { 4620 nativeRecordButtons(true, false, true); 4621 } 4622 setFocusControllerActive(true); 4623 //} else { 4624 // The WebView has gained focus while we do not have 4625 // windowfocus. When our window lost focus, we should have 4626 // called nativeRecordButtons(false...) 4627 } 4628 } else { 4629 // When we lost focus, unless focus went to the TextView (which is 4630 // true if we are in editing mode), stop drawing the cursor ring. 4631 if (!inEditingMode()) { 4632 mDrawCursorRing = false; 4633 if (mNativeClass != 0) { 4634 nativeRecordButtons(false, false, true); 4635 } 4636 setFocusControllerActive(false); 4637 } 4638 mGotKeyDown = false; 4639 } 4640 4641 super.onFocusChanged(focused, direction, previouslyFocusedRect); 4642 } 4643 4644 void setGLRectViewport() { 4645 View window = getRootView(); 4646 int[] location = new int[2]; 4647 getLocationInWindow(location); 4648 mGLRectViewport = new Rect(location[0], window.getHeight() 4649 - (location[1] + getHeight()), 4650 location[0] + getWidth(), 4651 window.getHeight() - location[1]); 4652 } 4653 4654 /** 4655 * @hide 4656 */ 4657 @Override 4658 protected boolean setFrame(int left, int top, int right, int bottom) { 4659 boolean changed = super.setFrame(left, top, right, bottom); 4660 if (!changed && mHeightCanMeasure) { 4661 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 4662 // in WebViewCore after we get the first layout. We do call 4663 // requestLayout() when we get contentSizeChanged(). But the View 4664 // system won't call onSizeChanged if the dimension is not changed. 4665 // In this case, we need to call sendViewSizeZoom() explicitly to 4666 // notify the WebKit about the new dimensions. 4667 sendViewSizeZoom(false); 4668 } 4669 setGLRectViewport(); 4670 return changed; 4671 } 4672 4673 @Override 4674 protected void onSizeChanged(int w, int h, int ow, int oh) { 4675 super.onSizeChanged(w, h, ow, oh); 4676 4677 // adjust the max viewport width depending on the view dimensions. This 4678 // is to ensure the scaling is not going insane. So do not shrink it if 4679 // the view size is temporarily smaller, e.g. when soft keyboard is up. 4680 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 4681 if (newMaxViewportWidth > sMaxViewportWidth) { 4682 sMaxViewportWidth = newMaxViewportWidth; 4683 } 4684 4685 mZoomManager.onSizeChanged(w, h, ow, oh); 4686 } 4687 4688 @Override 4689 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 4690 super.onScrollChanged(l, t, oldl, oldt); 4691 sendOurVisibleRect(); 4692 // update WebKit if visible title bar height changed. The logic is same 4693 // as getVisibleTitleHeight. 4694 int titleHeight = getTitleHeight(); 4695 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 4696 sendViewSizeZoom(false); 4697 } 4698 } 4699 4700 @Override 4701 public boolean dispatchKeyEvent(KeyEvent event) { 4702 boolean dispatch = true; 4703 4704 // Textfields, plugins, and contentEditable nodes need to receive the 4705 // shift up key even if another key was released while the shift key 4706 // was held down. 4707 if (!inEditingMode() && (mNativeClass == 0 4708 || !nativePageShouldHandleShiftAndArrows())) { 4709 if (event.getAction() == KeyEvent.ACTION_DOWN) { 4710 mGotKeyDown = true; 4711 } else { 4712 if (!mGotKeyDown) { 4713 /* 4714 * We got a key up for which we were not the recipient of 4715 * the original key down. Don't give it to the view. 4716 */ 4717 dispatch = false; 4718 } 4719 mGotKeyDown = false; 4720 } 4721 } 4722 4723 if (dispatch) { 4724 return super.dispatchKeyEvent(event); 4725 } else { 4726 // We didn't dispatch, so let something else handle the key 4727 return false; 4728 } 4729 } 4730 4731 // Here are the snap align logic: 4732 // 1. If it starts nearly horizontally or vertically, snap align; 4733 // 2. If there is a dramitic direction change, let it go; 4734 // 3. If there is a same direction back and forth, lock it. 4735 4736 // adjustable parameters 4737 private int mMinLockSnapReverseDistance; 4738 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 4739 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 4740 4741 private boolean hitFocusedPlugin(int contentX, int contentY) { 4742 if (DebugFlags.WEB_VIEW) { 4743 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 4744 Rect r = nativeFocusNodeBounds(); 4745 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 4746 + ", " + r.right + ", " + r.bottom + ")"); 4747 } 4748 return nativeFocusIsPlugin() 4749 && nativeFocusNodeBounds().contains(contentX, contentY); 4750 } 4751 4752 private boolean shouldForwardTouchEvent() { 4753 return mFullScreenHolder != null || (mForwardTouchEvents 4754 && !mSelectingText 4755 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 4756 } 4757 4758 private boolean inFullScreenMode() { 4759 return mFullScreenHolder != null; 4760 } 4761 4762 private void dismissFullScreenMode() { 4763 if (inFullScreenMode()) { 4764 mFullScreenHolder.dismiss(); 4765 mFullScreenHolder = null; 4766 } 4767 } 4768 4769 void onPinchToZoomAnimationStart() { 4770 // cancel the single touch handling 4771 cancelTouch(); 4772 onZoomAnimationStart(); 4773 } 4774 4775 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 4776 onZoomAnimationEnd(); 4777 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 4778 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 4779 // as it may trigger the unwanted fling. 4780 mTouchMode = TOUCH_PINCH_DRAG; 4781 mConfirmMove = true; 4782 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 4783 } 4784 4785 private void startScrollingLayer(float gestureX, float gestureY) { 4786 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 4787 int contentX = viewToContentX((int) gestureX + mScrollX); 4788 int contentY = viewToContentY((int) gestureY + mScrollY); 4789 mScrollingLayer = nativeScrollableLayer(contentX, contentY); 4790 if (mScrollingLayer != 0) { 4791 mTouchMode = TOUCH_DRAG_LAYER_MODE; 4792 } 4793 } 4794 } 4795 4796 // 1/(density * density) used to compute the distance between points. 4797 // Computed in init(). 4798 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 4799 4800 // The distance between two points reported in onTouchEvent scaled by the 4801 // density of the screen. 4802 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 4803 4804 @Override 4805 public boolean onTouchEvent(MotionEvent ev) { 4806 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 4807 return false; 4808 } 4809 4810 if (DebugFlags.WEB_VIEW) { 4811 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 4812 + " mTouchMode=" + mTouchMode 4813 + " numPointers=" + ev.getPointerCount()); 4814 } 4815 4816 int action = ev.getAction(); 4817 float x = ev.getX(); 4818 float y = ev.getY(); 4819 long eventTime = ev.getEventTime(); 4820 4821 final ScaleGestureDetector detector = 4822 mZoomManager.getMultiTouchGestureDetector(); 4823 boolean skipScaleGesture = false; 4824 // Set to the mid-point of a two-finger gesture used to detect if the 4825 // user has touched a layer. 4826 float gestureX = x; 4827 float gestureY = y; 4828 if (detector == null || !detector.isInProgress()) { 4829 // The gesture for scrolling a layer is two fingers close together. 4830 // FIXME: we may consider giving WebKit an option to handle 4831 // multi-touch events later. 4832 if (ev.getPointerCount() > 1) { 4833 float dx = ev.getX(1) - ev.getX(0); 4834 float dy = ev.getY(1) - ev.getY(0); 4835 float dist = (dx * dx + dy * dy) * 4836 DRAG_LAYER_INVERSE_DENSITY_SQUARED; 4837 // Use the approximate center to determine if the gesture is in 4838 // a layer. 4839 gestureX = ev.getX(0) + (dx * .5f); 4840 gestureY = ev.getY(0) + (dy * .5f); 4841 // Now use a consistent point for tracking movement. 4842 if (ev.getX(0) < ev.getX(1)) { 4843 x = ev.getX(0); 4844 y = ev.getY(0); 4845 } else { 4846 x = ev.getX(1); 4847 y = ev.getY(1); 4848 } 4849 action = ev.getActionMasked(); 4850 if (dist < DRAG_LAYER_FINGER_DISTANCE) { 4851 skipScaleGesture = true; 4852 } else if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 4853 // Fingers moved too far apart while dragging, the user 4854 // might be trying to zoom. 4855 mTouchMode = TOUCH_INIT_MODE; 4856 } 4857 } 4858 } 4859 4860 // If the page disallows zoom, pass multi-pointer events to webkit. 4861 if (ev.getPointerCount() > 1 4862 && (mZoomManager.isZoomScaleFixed() || mDeferMultitouch)) { 4863 if (DebugFlags.WEB_VIEW) { 4864 Log.v(LOGTAG, "passing " + ev.getPointerCount() + " points to webkit"); 4865 } 4866 passMultiTouchToWebKit(ev); 4867 return true; 4868 } 4869 4870 if (mZoomManager.supportsMultiTouchZoom() && ev.getPointerCount() > 1 && 4871 mTouchMode != TOUCH_DRAG_LAYER_MODE && !skipScaleGesture) { 4872 if (!detector.isInProgress() && 4873 ev.getActionMasked() != MotionEvent.ACTION_POINTER_DOWN) { 4874 // Insert a fake pointer down event in order to start 4875 // the zoom scale detector. 4876 MotionEvent temp = MotionEvent.obtain(ev); 4877 // Clear the original event and set it to 4878 // ACTION_POINTER_DOWN. 4879 try { 4880 temp.setAction(temp.getAction() & 4881 ~MotionEvent.ACTION_MASK | 4882 MotionEvent.ACTION_POINTER_DOWN); 4883 detector.onTouchEvent(temp); 4884 } finally { 4885 temp.recycle(); 4886 } 4887 } 4888 4889 detector.onTouchEvent(ev); 4890 4891 if (detector.isInProgress()) { 4892 mLastTouchTime = eventTime; 4893 cancelLongPress(); 4894 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 4895 if (!mZoomManager.supportsPanDuringZoom()) { 4896 return true; 4897 } 4898 mTouchMode = TOUCH_DRAG_MODE; 4899 if (mVelocityTracker == null) { 4900 mVelocityTracker = VelocityTracker.obtain(); 4901 } 4902 } 4903 4904 x = detector.getFocusX(); 4905 y = detector.getFocusY(); 4906 action = ev.getAction() & MotionEvent.ACTION_MASK; 4907 if (action == MotionEvent.ACTION_POINTER_DOWN) { 4908 cancelTouch(); 4909 action = MotionEvent.ACTION_DOWN; 4910 } else if (action == MotionEvent.ACTION_POINTER_UP) { 4911 // set mLastTouchX/Y to the remaining point 4912 mLastTouchX = x; 4913 mLastTouchY = y; 4914 } else if (action == MotionEvent.ACTION_MOVE) { 4915 // negative x or y indicate it is on the edge, skip it. 4916 if (x < 0 || y < 0) { 4917 return true; 4918 } 4919 } 4920 } 4921 4922 // Due to the touch screen edge effect, a touch closer to the edge 4923 // always snapped to the edge. As getViewWidth() can be different from 4924 // getWidth() due to the scrollbar, adjusting the point to match 4925 // getViewWidth(). Same applied to the height. 4926 x = Math.min(x, getViewWidth() - 1); 4927 y = Math.min(y, getViewHeightWithTitle() - 1); 4928 4929 float fDeltaX = mLastTouchX - x; 4930 float fDeltaY = mLastTouchY - y; 4931 int deltaX = (int) fDeltaX; 4932 int deltaY = (int) fDeltaY; 4933 int contentX = viewToContentX((int) x + mScrollX); 4934 int contentY = viewToContentY((int) y + mScrollY); 4935 4936 switch (action) { 4937 case MotionEvent.ACTION_DOWN: { 4938 mPreventDefault = PREVENT_DEFAULT_NO; 4939 mConfirmMove = false; 4940 if (!mScroller.isFinished()) { 4941 // stop the current scroll animation, but if this is 4942 // the start of a fling, allow it to add to the current 4943 // fling's velocity 4944 mScroller.abortAnimation(); 4945 mTouchMode = TOUCH_DRAG_START_MODE; 4946 mConfirmMove = true; 4947 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 4948 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 4949 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 4950 if (getSettings().supportTouchOnly()) { 4951 removeTouchHighlight(true); 4952 } 4953 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 4954 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 4955 } else { 4956 // commit the short press action for the previous tap 4957 doShortPress(); 4958 mTouchMode = TOUCH_INIT_MODE; 4959 mDeferTouchProcess = (!inFullScreenMode() 4960 && mForwardTouchEvents) ? hitFocusedPlugin( 4961 contentX, contentY) : false; 4962 } 4963 } else { // the normal case 4964 mTouchMode = TOUCH_INIT_MODE; 4965 mDeferTouchProcess = (!inFullScreenMode() 4966 && mForwardTouchEvents) ? hitFocusedPlugin( 4967 contentX, contentY) : false; 4968 mWebViewCore.sendMessage( 4969 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 4970 if (getSettings().supportTouchOnly()) { 4971 TouchHighlightData data = new TouchHighlightData(); 4972 data.mX = contentX; 4973 data.mY = contentY; 4974 data.mSlop = viewToContentDimension(mNavSlop); 4975 mWebViewCore.sendMessageDelayed( 4976 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 4977 ViewConfiguration.getTapTimeout()); 4978 if (DEBUG_TOUCH_HIGHLIGHT) { 4979 if (getSettings().getNavDump()) { 4980 mTouchHighlightX = (int) x + mScrollX; 4981 mTouchHighlightY = (int) y + mScrollY; 4982 mPrivateHandler.postDelayed(new Runnable() { 4983 public void run() { 4984 mTouchHighlightX = mTouchHighlightY = 0; 4985 invalidate(); 4986 } 4987 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 4988 } 4989 } 4990 } 4991 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 4992 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 4993 (eventTime - mLastTouchUpTime), eventTime); 4994 } 4995 if (mSelectingText) { 4996 mDrawSelectionPointer = false; 4997 mSelectionStarted = nativeStartSelection(contentX, contentY); 4998 if (DebugFlags.WEB_VIEW) { 4999 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5000 } 5001 invalidate(); 5002 } 5003 } 5004 // Trigger the link 5005 if (mTouchMode == TOUCH_INIT_MODE 5006 || mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5007 mPrivateHandler.sendEmptyMessageDelayed( 5008 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5009 mPrivateHandler.sendEmptyMessageDelayed( 5010 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5011 if (inFullScreenMode() || mDeferTouchProcess) { 5012 mPreventDefault = PREVENT_DEFAULT_YES; 5013 } else if (mForwardTouchEvents) { 5014 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5015 } else { 5016 mPreventDefault = PREVENT_DEFAULT_NO; 5017 } 5018 // pass the touch events from UI thread to WebCore thread 5019 if (shouldForwardTouchEvent()) { 5020 TouchEventData ted = new TouchEventData(); 5021 ted.mAction = action; 5022 ted.mPoints = new Point[1]; 5023 ted.mPoints[0] = new Point(contentX, contentY); 5024 ted.mMetaState = ev.getMetaState(); 5025 ted.mReprocess = mDeferTouchProcess; 5026 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5027 if (mDeferTouchProcess) { 5028 // still needs to set them for compute deltaX/Y 5029 mLastTouchX = x; 5030 mLastTouchY = y; 5031 break; 5032 } 5033 if (!inFullScreenMode()) { 5034 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5035 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5036 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5037 action, 0), TAP_TIMEOUT); 5038 } 5039 } 5040 } 5041 startTouch(x, y, eventTime); 5042 break; 5043 } 5044 case MotionEvent.ACTION_MOVE: { 5045 boolean firstMove = false; 5046 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5047 >= mTouchSlopSquare) { 5048 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5049 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5050 mConfirmMove = true; 5051 firstMove = true; 5052 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5053 mTouchMode = TOUCH_INIT_MODE; 5054 } 5055 if (getSettings().supportTouchOnly()) { 5056 removeTouchHighlight(true); 5057 } 5058 } 5059 // pass the touch events from UI thread to WebCore thread 5060 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5061 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5062 TouchEventData ted = new TouchEventData(); 5063 ted.mAction = action; 5064 ted.mPoints = new Point[1]; 5065 ted.mPoints[0] = new Point(contentX, contentY); 5066 ted.mMetaState = ev.getMetaState(); 5067 ted.mReprocess = mDeferTouchProcess; 5068 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5069 mLastSentTouchTime = eventTime; 5070 if (mDeferTouchProcess) { 5071 break; 5072 } 5073 if (firstMove && !inFullScreenMode()) { 5074 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5075 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5076 action, 0), TAP_TIMEOUT); 5077 } 5078 } 5079 if (mTouchMode == TOUCH_DONE_MODE 5080 || mPreventDefault == PREVENT_DEFAULT_YES) { 5081 // no dragging during scroll zoom animation, or when prevent 5082 // default is yes 5083 break; 5084 } 5085 if (mVelocityTracker == null) { 5086 Log.e(LOGTAG, "Got null mVelocityTracker when " 5087 + "mPreventDefault = " + mPreventDefault 5088 + " mDeferTouchProcess = " + mDeferTouchProcess 5089 + " mTouchMode = " + mTouchMode); 5090 } 5091 mVelocityTracker.addMovement(ev); 5092 if (mSelectingText && mSelectionStarted) { 5093 if (DebugFlags.WEB_VIEW) { 5094 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5095 } 5096 nativeExtendSelection(contentX, contentY); 5097 invalidate(); 5098 break; 5099 } 5100 5101 if (mTouchMode != TOUCH_DRAG_MODE && 5102 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5103 5104 if (!mConfirmMove) { 5105 break; 5106 } 5107 5108 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5109 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5110 // track mLastTouchTime as we may need to do fling at 5111 // ACTION_UP 5112 mLastTouchTime = eventTime; 5113 break; 5114 } 5115 5116 // Only lock dragging to one axis if we don't have a scale in progress. 5117 // Scaling implies free-roaming movement. Note this is only ever a question 5118 // if mZoomManager.supportsPanDuringZoom() is true. 5119 if (detector != null && !detector.isInProgress()) { 5120 // if it starts nearly horizontal or vertical, enforce it 5121 int ax = Math.abs(deltaX); 5122 int ay = Math.abs(deltaY); 5123 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5124 mSnapScrollMode = SNAP_X; 5125 mSnapPositive = deltaX > 0; 5126 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5127 mSnapScrollMode = SNAP_Y; 5128 mSnapPositive = deltaY > 0; 5129 } 5130 } 5131 5132 mTouchMode = TOUCH_DRAG_MODE; 5133 mLastTouchX = x; 5134 mLastTouchY = y; 5135 fDeltaX = 0.0f; 5136 fDeltaY = 0.0f; 5137 deltaX = 0; 5138 deltaY = 0; 5139 5140 if (skipScaleGesture) { 5141 startScrollingLayer(gestureX, gestureY); 5142 } 5143 startDrag(); 5144 } 5145 5146 // do pan 5147 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5148 int newScrollX = pinLocX(mScrollX + deltaX); 5149 int newDeltaX = newScrollX - mScrollX; 5150 if (deltaX != newDeltaX) { 5151 deltaX = newDeltaX; 5152 fDeltaX = (float) newDeltaX; 5153 } 5154 int newScrollY = pinLocY(mScrollY + deltaY); 5155 int newDeltaY = newScrollY - mScrollY; 5156 if (deltaY != newDeltaY) { 5157 deltaY = newDeltaY; 5158 fDeltaY = (float) newDeltaY; 5159 } 5160 } 5161 boolean done = false; 5162 boolean keepScrollBarsVisible = false; 5163 if (Math.abs(fDeltaX) < 1.0f && Math.abs(fDeltaY) < 1.0f) { 5164 mLastTouchX = x; 5165 mLastTouchY = y; 5166 keepScrollBarsVisible = done = true; 5167 } else { 5168 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5169 int ax = Math.abs(deltaX); 5170 int ay = Math.abs(deltaY); 5171 if (mSnapScrollMode == SNAP_X) { 5172 // radical change means getting out of snap mode 5173 if (ay > MAX_SLOPE_FOR_DIAG * ax 5174 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5175 mSnapScrollMode = SNAP_NONE; 5176 } 5177 // reverse direction means lock in the snap mode 5178 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5179 (mSnapPositive 5180 ? deltaX < -mMinLockSnapReverseDistance 5181 : deltaX > mMinLockSnapReverseDistance)) { 5182 mSnapScrollMode |= SNAP_LOCK; 5183 } 5184 } else { 5185 // radical change means getting out of snap mode 5186 if (ax > MAX_SLOPE_FOR_DIAG * ay 5187 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5188 mSnapScrollMode = SNAP_NONE; 5189 } 5190 // reverse direction means lock in the snap mode 5191 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5192 (mSnapPositive 5193 ? deltaY < -mMinLockSnapReverseDistance 5194 : deltaY > mMinLockSnapReverseDistance)) { 5195 mSnapScrollMode |= SNAP_LOCK; 5196 } 5197 } 5198 } 5199 if (mSnapScrollMode != SNAP_NONE) { 5200 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5201 deltaY = 0; 5202 } else { 5203 deltaX = 0; 5204 } 5205 } 5206 if ((deltaX | deltaY) != 0) { 5207 if (deltaX != 0) { 5208 mLastTouchX = x; 5209 } 5210 if (deltaY != 0) { 5211 mLastTouchY = y; 5212 } 5213 mHeldMotionless = MOTIONLESS_FALSE; 5214 } else { 5215 // keep the scrollbar on the screen even there is no 5216 // scroll 5217 mLastTouchX = x; 5218 mLastTouchY = y; 5219 keepScrollBarsVisible = true; 5220 } 5221 mLastTouchTime = eventTime; 5222 mUserScroll = true; 5223 } 5224 5225 doDrag(deltaX, deltaY); 5226 5227 // Turn off scrollbars when dragging a layer. 5228 if (keepScrollBarsVisible && 5229 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5230 if (mHeldMotionless != MOTIONLESS_TRUE) { 5231 mHeldMotionless = MOTIONLESS_TRUE; 5232 invalidate(); 5233 } 5234 // keep the scrollbar on the screen even there is no scroll 5235 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5236 false); 5237 // return false to indicate that we can't pan out of the 5238 // view space 5239 return !done; 5240 } 5241 break; 5242 } 5243 case MotionEvent.ACTION_UP: { 5244 if (!isFocused()) requestFocus(); 5245 // pass the touch events from UI thread to WebCore thread 5246 if (shouldForwardTouchEvent()) { 5247 TouchEventData ted = new TouchEventData(); 5248 ted.mAction = action; 5249 ted.mPoints = new Point[1]; 5250 ted.mPoints[0] = new Point(contentX, contentY); 5251 ted.mMetaState = ev.getMetaState(); 5252 ted.mReprocess = mDeferTouchProcess; 5253 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5254 } 5255 mLastTouchUpTime = eventTime; 5256 switch (mTouchMode) { 5257 case TOUCH_DOUBLE_TAP_MODE: // double tap 5258 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5259 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5260 if (inFullScreenMode() || mDeferTouchProcess) { 5261 TouchEventData ted = new TouchEventData(); 5262 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5263 ted.mPoints = new Point[1]; 5264 ted.mPoints[0] = new Point(contentX, contentY); 5265 ted.mMetaState = ev.getMetaState(); 5266 ted.mReprocess = mDeferTouchProcess; 5267 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5268 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5269 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5270 mTouchMode = TOUCH_DONE_MODE; 5271 } 5272 break; 5273 case TOUCH_INIT_MODE: // tap 5274 case TOUCH_SHORTPRESS_START_MODE: 5275 case TOUCH_SHORTPRESS_MODE: 5276 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5277 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5278 if (mConfirmMove) { 5279 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5280 " WebCore's response for touch down."); 5281 if (mPreventDefault != PREVENT_DEFAULT_YES 5282 && (computeMaxScrollX() > 0 5283 || computeMaxScrollY() > 0)) { 5284 // If the user has performed a very quick touch 5285 // sequence it is possible that we may get here 5286 // before WebCore has had a chance to process the events. 5287 // In this case, any call to preventDefault in the 5288 // JS touch handler will not have been executed yet. 5289 // Hence we will see both the UI (now) and WebCore 5290 // (when context switches) handling the event, 5291 // regardless of whether the web developer actually 5292 // doeses preventDefault in their touch handler. This 5293 // is the nature of our asynchronous touch model. 5294 5295 // we will not rewrite drag code here, but we 5296 // will try fling if it applies. 5297 WebViewCore.reducePriority(); 5298 // to get better performance, pause updating the 5299 // picture 5300 WebViewCore.pauseUpdatePicture(mWebViewCore); 5301 // fall through to TOUCH_DRAG_MODE 5302 } else { 5303 // WebKit may consume the touch event and modify 5304 // DOM. drawContentPicture() will be called with 5305 // animateSroll as true for better performance. 5306 // Force redraw in high-quality. 5307 invalidate(); 5308 break; 5309 } 5310 } else { 5311 if (mSelectingText) { 5312 // tapping on selection or controls does nothing 5313 if (!nativeHitSelection(contentX, contentY)) { 5314 selectionDone(); 5315 } 5316 break; 5317 } 5318 // only trigger double tap if the WebView is 5319 // scalable 5320 if (mTouchMode == TOUCH_INIT_MODE 5321 && (canZoomIn() || canZoomOut())) { 5322 mPrivateHandler.sendEmptyMessageDelayed( 5323 RELEASE_SINGLE_TAP, ViewConfiguration 5324 .getDoubleTapTimeout()); 5325 } else { 5326 doShortPress(); 5327 } 5328 break; 5329 } 5330 case TOUCH_DRAG_MODE: 5331 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5332 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5333 // if the user waits a while w/o moving before the 5334 // up, we don't want to do a fling 5335 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5336 if (mVelocityTracker == null) { 5337 Log.e(LOGTAG, "Got null mVelocityTracker when " 5338 + "mPreventDefault = " 5339 + mPreventDefault 5340 + " mDeferTouchProcess = " 5341 + mDeferTouchProcess); 5342 } 5343 mVelocityTracker.addMovement(ev); 5344 // set to MOTIONLESS_IGNORE so that it won't keep 5345 // removing and sending message in 5346 // drawCoreAndCursorRing() 5347 mHeldMotionless = MOTIONLESS_IGNORE; 5348 doFling(); 5349 break; 5350 } 5351 // redraw in high-quality, as we're done dragging 5352 mHeldMotionless = MOTIONLESS_TRUE; 5353 invalidate(); 5354 // fall through 5355 case TOUCH_DRAG_START_MODE: 5356 case TOUCH_DRAG_LAYER_MODE: 5357 // TOUCH_DRAG_START_MODE should not happen for the real 5358 // device as we almost certain will get a MOVE. But this 5359 // is possible on emulator. 5360 mLastVelocity = 0; 5361 WebViewCore.resumePriority(); 5362 WebViewCore.resumeUpdatePicture(mWebViewCore); 5363 break; 5364 } 5365 stopTouch(); 5366 break; 5367 } 5368 case MotionEvent.ACTION_CANCEL: { 5369 if (mTouchMode == TOUCH_DRAG_MODE) { 5370 invalidate(); 5371 } 5372 cancelWebCoreTouchEvent(contentX, contentY, false); 5373 cancelTouch(); 5374 break; 5375 } 5376 } 5377 return true; 5378 } 5379 5380 private void passMultiTouchToWebKit(MotionEvent ev) { 5381 TouchEventData ted = new TouchEventData(); 5382 ted.mAction = ev.getAction() & MotionEvent.ACTION_MASK; 5383 final int count = ev.getPointerCount(); 5384 ted.mPoints = new Point[count]; 5385 for (int c = 0; c < count; c++) { 5386 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5387 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5388 ted.mPoints[c] = new Point(x, y); 5389 } 5390 ted.mMetaState = ev.getMetaState(); 5391 ted.mReprocess = mDeferTouchProcess; 5392 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5393 cancelLongPress(); 5394 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5395 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5396 } 5397 5398 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 5399 if (shouldForwardTouchEvent()) { 5400 if (removeEvents) { 5401 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 5402 } 5403 TouchEventData ted = new TouchEventData(); 5404 ted.mPoints = new Point[1]; 5405 ted.mPoints[0] = new Point(x, y); 5406 ted.mAction = MotionEvent.ACTION_CANCEL; 5407 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5408 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5409 } 5410 } 5411 5412 private void startTouch(float x, float y, long eventTime) { 5413 // Remember where the motion event started 5414 mLastTouchX = x; 5415 mLastTouchY = y; 5416 mLastTouchTime = eventTime; 5417 mVelocityTracker = VelocityTracker.obtain(); 5418 mSnapScrollMode = SNAP_NONE; 5419 } 5420 5421 private void startDrag() { 5422 WebViewCore.reducePriority(); 5423 // to get better performance, pause updating the picture 5424 WebViewCore.pauseUpdatePicture(mWebViewCore); 5425 if (!mDragFromTextInput) { 5426 nativeHideCursor(); 5427 } 5428 5429 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 5430 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 5431 mZoomManager.invokeZoomPicker(); 5432 } 5433 } 5434 5435 private void doDrag(int deltaX, int deltaY) { 5436 if ((deltaX | deltaY) != 0) { 5437 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 5438 deltaX = viewToContentDimension(deltaX); 5439 deltaY = viewToContentDimension(deltaY); 5440 if (nativeScrollLayer(mScrollingLayer, deltaX, deltaY)) { 5441 invalidate(); 5442 } 5443 return; 5444 } 5445 scrollBy(deltaX, deltaY); 5446 } 5447 mZoomManager.keepZoomPickerVisible(); 5448 } 5449 5450 private void stopTouch() { 5451 // we also use mVelocityTracker == null to tell us that we are 5452 // not "moving around", so we can take the slower/prettier 5453 // mode in the drawing code 5454 if (mVelocityTracker != null) { 5455 mVelocityTracker.recycle(); 5456 mVelocityTracker = null; 5457 } 5458 } 5459 5460 private void cancelTouch() { 5461 // we also use mVelocityTracker == null to tell us that we are 5462 // not "moving around", so we can take the slower/prettier 5463 // mode in the drawing code 5464 if (mVelocityTracker != null) { 5465 mVelocityTracker.recycle(); 5466 mVelocityTracker = null; 5467 } 5468 if (mTouchMode == TOUCH_DRAG_MODE || 5469 mTouchMode == TOUCH_DRAG_LAYER_MODE) { 5470 WebViewCore.resumePriority(); 5471 WebViewCore.resumeUpdatePicture(mWebViewCore); 5472 } 5473 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5474 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5475 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5476 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5477 if (getSettings().supportTouchOnly()) { 5478 removeTouchHighlight(true); 5479 } 5480 mHeldMotionless = MOTIONLESS_TRUE; 5481 mTouchMode = TOUCH_DONE_MODE; 5482 nativeHideCursor(); 5483 } 5484 5485 private long mTrackballFirstTime = 0; 5486 private long mTrackballLastTime = 0; 5487 private float mTrackballRemainsX = 0.0f; 5488 private float mTrackballRemainsY = 0.0f; 5489 private int mTrackballXMove = 0; 5490 private int mTrackballYMove = 0; 5491 private boolean mSelectingText = false; 5492 private boolean mSelectionStarted = false; 5493 private boolean mExtendSelection = false; 5494 private boolean mDrawSelectionPointer = false; 5495 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 5496 private static final int TRACKBALL_TIMEOUT = 200; 5497 private static final int TRACKBALL_WAIT = 100; 5498 private static final int TRACKBALL_SCALE = 400; 5499 private static final int TRACKBALL_SCROLL_COUNT = 5; 5500 private static final int TRACKBALL_MOVE_COUNT = 10; 5501 private static final int TRACKBALL_MULTIPLIER = 3; 5502 private static final int SELECT_CURSOR_OFFSET = 16; 5503 private int mSelectX = 0; 5504 private int mSelectY = 0; 5505 private boolean mFocusSizeChanged = false; 5506 private boolean mShiftIsPressed = false; 5507 private boolean mTrackballDown = false; 5508 private long mTrackballUpTime = 0; 5509 private long mLastCursorTime = 0; 5510 private Rect mLastCursorBounds; 5511 5512 // Set by default; BrowserActivity clears to interpret trackball data 5513 // directly for movement. Currently, the framework only passes 5514 // arrow key events, not trackball events, from one child to the next 5515 private boolean mMapTrackballToArrowKeys = true; 5516 5517 public void setMapTrackballToArrowKeys(boolean setMap) { 5518 mMapTrackballToArrowKeys = setMap; 5519 } 5520 5521 void resetTrackballTime() { 5522 mTrackballLastTime = 0; 5523 } 5524 5525 @Override 5526 public boolean onTrackballEvent(MotionEvent ev) { 5527 long time = ev.getEventTime(); 5528 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 5529 if (ev.getY() > 0) pageDown(true); 5530 if (ev.getY() < 0) pageUp(true); 5531 return true; 5532 } 5533 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 5534 if (mSelectingText) { 5535 return true; // discard press if copy in progress 5536 } 5537 mTrackballDown = true; 5538 if (mNativeClass == 0) { 5539 return false; 5540 } 5541 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 5542 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 5543 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 5544 nativeSelectBestAt(mLastCursorBounds); 5545 } 5546 if (DebugFlags.WEB_VIEW) { 5547 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 5548 + " time=" + time 5549 + " mLastCursorTime=" + mLastCursorTime); 5550 } 5551 if (isInTouchMode()) requestFocusFromTouch(); 5552 return false; // let common code in onKeyDown at it 5553 } 5554 if (ev.getAction() == MotionEvent.ACTION_UP) { 5555 // LONG_PRESS_CENTER is set in common onKeyDown 5556 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5557 mTrackballDown = false; 5558 mTrackballUpTime = time; 5559 if (mSelectingText) { 5560 if (mExtendSelection) { 5561 copySelection(); 5562 selectionDone(); 5563 } else { 5564 mExtendSelection = true; 5565 nativeSetExtendSelection(); 5566 invalidate(); // draw the i-beam instead of the arrow 5567 } 5568 return true; // discard press if copy in progress 5569 } 5570 if (DebugFlags.WEB_VIEW) { 5571 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 5572 + " time=" + time 5573 ); 5574 } 5575 return false; // let common code in onKeyUp at it 5576 } 5577 if ((mMapTrackballToArrowKeys && mShiftIsPressed == false) || 5578 (mAccessibilityInjector != null || mAccessibilityScriptInjected)) { 5579 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 5580 return false; 5581 } 5582 if (mTrackballDown) { 5583 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 5584 return true; // discard move if trackball is down 5585 } 5586 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 5587 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 5588 return true; 5589 } 5590 // TODO: alternatively we can do panning as touch does 5591 switchOutDrawHistory(); 5592 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 5593 if (DebugFlags.WEB_VIEW) { 5594 Log.v(LOGTAG, "onTrackballEvent time=" 5595 + time + " last=" + mTrackballLastTime); 5596 } 5597 mTrackballFirstTime = time; 5598 mTrackballXMove = mTrackballYMove = 0; 5599 } 5600 mTrackballLastTime = time; 5601 if (DebugFlags.WEB_VIEW) { 5602 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 5603 } 5604 mTrackballRemainsX += ev.getX(); 5605 mTrackballRemainsY += ev.getY(); 5606 doTrackball(time); 5607 return true; 5608 } 5609 5610 void moveSelection(float xRate, float yRate) { 5611 if (mNativeClass == 0) 5612 return; 5613 int width = getViewWidth(); 5614 int height = getViewHeight(); 5615 mSelectX += xRate; 5616 mSelectY += yRate; 5617 int maxX = width + mScrollX; 5618 int maxY = height + mScrollY; 5619 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 5620 , mSelectX)); 5621 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 5622 , mSelectY)); 5623 if (DebugFlags.WEB_VIEW) { 5624 Log.v(LOGTAG, "moveSelection" 5625 + " mSelectX=" + mSelectX 5626 + " mSelectY=" + mSelectY 5627 + " mScrollX=" + mScrollX 5628 + " mScrollY=" + mScrollY 5629 + " xRate=" + xRate 5630 + " yRate=" + yRate 5631 ); 5632 } 5633 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 5634 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 5635 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5636 : 0; 5637 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 5638 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 5639 : 0; 5640 pinScrollBy(scrollX, scrollY, true, 0); 5641 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 5642 requestRectangleOnScreen(select); 5643 invalidate(); 5644 } 5645 5646 private int scaleTrackballX(float xRate, int width) { 5647 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 5648 int nextXMove = xMove; 5649 if (xMove > 0) { 5650 if (xMove > mTrackballXMove) { 5651 xMove -= mTrackballXMove; 5652 } 5653 } else if (xMove < mTrackballXMove) { 5654 xMove -= mTrackballXMove; 5655 } 5656 mTrackballXMove = nextXMove; 5657 return xMove; 5658 } 5659 5660 private int scaleTrackballY(float yRate, int height) { 5661 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 5662 int nextYMove = yMove; 5663 if (yMove > 0) { 5664 if (yMove > mTrackballYMove) { 5665 yMove -= mTrackballYMove; 5666 } 5667 } else if (yMove < mTrackballYMove) { 5668 yMove -= mTrackballYMove; 5669 } 5670 mTrackballYMove = nextYMove; 5671 return yMove; 5672 } 5673 5674 private int keyCodeToSoundsEffect(int keyCode) { 5675 switch(keyCode) { 5676 case KeyEvent.KEYCODE_DPAD_UP: 5677 return SoundEffectConstants.NAVIGATION_UP; 5678 case KeyEvent.KEYCODE_DPAD_RIGHT: 5679 return SoundEffectConstants.NAVIGATION_RIGHT; 5680 case KeyEvent.KEYCODE_DPAD_DOWN: 5681 return SoundEffectConstants.NAVIGATION_DOWN; 5682 case KeyEvent.KEYCODE_DPAD_LEFT: 5683 return SoundEffectConstants.NAVIGATION_LEFT; 5684 } 5685 throw new IllegalArgumentException("keyCode must be one of " + 5686 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 5687 "KEYCODE_DPAD_LEFT}."); 5688 } 5689 5690 private void doTrackball(long time) { 5691 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 5692 if (elapsed == 0) { 5693 elapsed = TRACKBALL_TIMEOUT; 5694 } 5695 float xRate = mTrackballRemainsX * 1000 / elapsed; 5696 float yRate = mTrackballRemainsY * 1000 / elapsed; 5697 int viewWidth = getViewWidth(); 5698 int viewHeight = getViewHeight(); 5699 if (mSelectingText) { 5700 if (!mDrawSelectionPointer) { 5701 // The last selection was made by touch, disabling drawing the 5702 // selection pointer. Allow the trackball to adjust the 5703 // position of the touch control. 5704 mSelectX = contentToViewX(nativeSelectionX()); 5705 mSelectY = contentToViewY(nativeSelectionY()); 5706 mDrawSelectionPointer = mExtendSelection = true; 5707 nativeSetExtendSelection(); 5708 } 5709 moveSelection(scaleTrackballX(xRate, viewWidth), 5710 scaleTrackballY(yRate, viewHeight)); 5711 mTrackballRemainsX = mTrackballRemainsY = 0; 5712 return; 5713 } 5714 float ax = Math.abs(xRate); 5715 float ay = Math.abs(yRate); 5716 float maxA = Math.max(ax, ay); 5717 if (DebugFlags.WEB_VIEW) { 5718 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 5719 + " xRate=" + xRate 5720 + " yRate=" + yRate 5721 + " mTrackballRemainsX=" + mTrackballRemainsX 5722 + " mTrackballRemainsY=" + mTrackballRemainsY); 5723 } 5724 int width = mContentWidth - viewWidth; 5725 int height = mContentHeight - viewHeight; 5726 if (width < 0) width = 0; 5727 if (height < 0) height = 0; 5728 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 5729 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 5730 maxA = Math.max(ax, ay); 5731 int count = Math.max(0, (int) maxA); 5732 int oldScrollX = mScrollX; 5733 int oldScrollY = mScrollY; 5734 if (count > 0) { 5735 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 5736 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 5737 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 5738 KeyEvent.KEYCODE_DPAD_RIGHT; 5739 count = Math.min(count, TRACKBALL_MOVE_COUNT); 5740 if (DebugFlags.WEB_VIEW) { 5741 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 5742 + " count=" + count 5743 + " mTrackballRemainsX=" + mTrackballRemainsX 5744 + " mTrackballRemainsY=" + mTrackballRemainsY); 5745 } 5746 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 5747 for (int i = 0; i < count; i++) { 5748 letPageHandleNavKey(selectKeyCode, time, true); 5749 } 5750 letPageHandleNavKey(selectKeyCode, time, false); 5751 } else if (navHandledKey(selectKeyCode, count, false, time)) { 5752 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 5753 } 5754 mTrackballRemainsX = mTrackballRemainsY = 0; 5755 } 5756 if (count >= TRACKBALL_SCROLL_COUNT) { 5757 int xMove = scaleTrackballX(xRate, width); 5758 int yMove = scaleTrackballY(yRate, height); 5759 if (DebugFlags.WEB_VIEW) { 5760 Log.v(LOGTAG, "doTrackball pinScrollBy" 5761 + " count=" + count 5762 + " xMove=" + xMove + " yMove=" + yMove 5763 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 5764 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 5765 ); 5766 } 5767 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 5768 xMove = 0; 5769 } 5770 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 5771 yMove = 0; 5772 } 5773 if (xMove != 0 || yMove != 0) { 5774 pinScrollBy(xMove, yMove, true, 0); 5775 } 5776 mUserScroll = true; 5777 } 5778 } 5779 5780 private int computeMaxScrollX() { 5781 return Math.max(computeHorizontalScrollRange() - getViewWidth(), 0); 5782 } 5783 5784 private int computeMaxScrollY() { 5785 return Math.max(computeVerticalScrollRange() + getTitleHeight() 5786 - getViewHeightWithTitle(), 0); 5787 } 5788 5789 boolean updateScrollCoordinates(int x, int y) { 5790 int oldX = mScrollX; 5791 int oldY = mScrollY; 5792 mScrollX = x; 5793 mScrollY = y; 5794 if (oldX != mScrollX || oldY != mScrollY) { 5795 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 5796 return true; 5797 } else { 5798 return false; 5799 } 5800 } 5801 5802 public void flingScroll(int vx, int vy) { 5803 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 5804 computeMaxScrollY()); 5805 invalidate(); 5806 } 5807 5808 private void doFling() { 5809 if (mVelocityTracker == null) { 5810 return; 5811 } 5812 int maxX = computeMaxScrollX(); 5813 int maxY = computeMaxScrollY(); 5814 5815 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 5816 int vx = (int) mVelocityTracker.getXVelocity(); 5817 int vy = (int) mVelocityTracker.getYVelocity(); 5818 5819 if (mSnapScrollMode != SNAP_NONE) { 5820 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5821 vy = 0; 5822 } else { 5823 vx = 0; 5824 } 5825 } 5826 if (true /* EMG release: make our fling more like Maps' */) { 5827 // maps cuts their velocity in half 5828 vx = vx * 3 / 4; 5829 vy = vy * 3 / 4; 5830 } 5831 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 5832 WebViewCore.resumePriority(); 5833 WebViewCore.resumeUpdatePicture(mWebViewCore); 5834 return; 5835 } 5836 float currentVelocity = mScroller.getCurrVelocity(); 5837 float velocity = (float) Math.hypot(vx, vy); 5838 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 5839 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 5840 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 5841 - Math.atan2(vy, vx))); 5842 final float circle = (float) (Math.PI) * 2.0f; 5843 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 5844 vx += currentVelocity * mLastVelX / mLastVelocity; 5845 vy += currentVelocity * mLastVelY / mLastVelocity; 5846 velocity = (float) Math.hypot(vx, vy); 5847 if (DebugFlags.WEB_VIEW) { 5848 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 5849 } 5850 } else if (DebugFlags.WEB_VIEW) { 5851 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 5852 } 5853 } else if (DebugFlags.WEB_VIEW) { 5854 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 5855 + " current=" + currentVelocity 5856 + " vx=" + vx + " vy=" + vy 5857 + " maxX=" + maxX + " maxY=" + maxY 5858 + " mScrollX=" + mScrollX + " mScrollY=" + mScrollY); 5859 } 5860 mLastVelX = vx; 5861 mLastVelY = vy; 5862 mLastVelocity = velocity; 5863 5864 mScroller.fling(mScrollX, mScrollY, -vx, -vy, 0, maxX, 0, maxY); 5865 final int time = mScroller.getDuration(); 5866 mPrivateHandler.sendEmptyMessageDelayed(RESUME_WEBCORE_PRIORITY, time); 5867 awakenScrollBars(time); 5868 invalidate(); 5869 } 5870 5871 /** 5872 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 5873 * in charge of installing this view to the view hierarchy. This view will 5874 * become visible when the user starts scrolling via touch and fade away if 5875 * the user does not interact with it. 5876 * <p/> 5877 * API version 3 introduces a built-in zoom mechanism that is shown 5878 * automatically by the MapView. This is the preferred approach for 5879 * showing the zoom UI. 5880 * 5881 * @deprecated The built-in zoom mechanism is preferred, see 5882 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 5883 */ 5884 @Deprecated 5885 public View getZoomControls() { 5886 if (!getSettings().supportZoom()) { 5887 Log.w(LOGTAG, "This WebView doesn't support zoom."); 5888 return null; 5889 } 5890 return mZoomManager.getExternalZoomPicker(); 5891 } 5892 5893 void dismissZoomControl() { 5894 mZoomManager.dismissZoomPicker(); 5895 } 5896 5897 float getDefaultZoomScale() { 5898 return mZoomManager.getDefaultScale(); 5899 } 5900 5901 /** 5902 * @return TRUE if the WebView can be zoomed in. 5903 */ 5904 public boolean canZoomIn() { 5905 return mZoomManager.canZoomIn(); 5906 } 5907 5908 /** 5909 * @return TRUE if the WebView can be zoomed out. 5910 */ 5911 public boolean canZoomOut() { 5912 return mZoomManager.canZoomOut(); 5913 } 5914 5915 /** 5916 * Perform zoom in in the webview 5917 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 5918 */ 5919 public boolean zoomIn() { 5920 return mZoomManager.zoomIn(); 5921 } 5922 5923 /** 5924 * Perform zoom out in the webview 5925 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 5926 */ 5927 public boolean zoomOut() { 5928 return mZoomManager.zoomOut(); 5929 } 5930 5931 private void updateSelection() { 5932 if (mNativeClass == 0) { 5933 return; 5934 } 5935 // mLastTouchX and mLastTouchY are the point in the current viewport 5936 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 5937 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 5938 Rect rect = new Rect(contentX - mNavSlop, contentY - mNavSlop, 5939 contentX + mNavSlop, contentY + mNavSlop); 5940 nativeSelectBestAt(rect); 5941 } 5942 5943 /** 5944 * Scroll the focused text field/area to match the WebTextView 5945 * @param xPercent New x position of the WebTextView from 0 to 1. 5946 * @param y New y position of the WebTextView in view coordinates 5947 */ 5948 /*package*/ void scrollFocusedTextInput(float xPercent, int y) { 5949 if (!inEditingMode() || mWebViewCore == null) { 5950 return; 5951 } 5952 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 5953 // Since this position is relative to the top of the text input 5954 // field, we do not need to take the title bar's height into 5955 // consideration. 5956 viewToContentDimension(y), 5957 new Float(xPercent)); 5958 } 5959 5960 /** 5961 * Set our starting point and time for a drag from the WebTextView. 5962 */ 5963 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 5964 if (!inEditingMode()) { 5965 return; 5966 } 5967 mLastTouchX = x + (float) (mWebTextView.getLeft() - mScrollX); 5968 mLastTouchY = y + (float) (mWebTextView.getTop() - mScrollY); 5969 mLastTouchTime = eventTime; 5970 if (!mScroller.isFinished()) { 5971 abortAnimation(); 5972 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5973 } 5974 mSnapScrollMode = SNAP_NONE; 5975 mVelocityTracker = VelocityTracker.obtain(); 5976 mTouchMode = TOUCH_DRAG_START_MODE; 5977 } 5978 5979 /** 5980 * Given a motion event from the WebTextView, set its location to our 5981 * coordinates, and handle the event. 5982 */ 5983 /*package*/ boolean textFieldDrag(MotionEvent event) { 5984 if (!inEditingMode()) { 5985 return false; 5986 } 5987 mDragFromTextInput = true; 5988 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 5989 (float) (mWebTextView.getTop() - mScrollY)); 5990 boolean result = onTouchEvent(event); 5991 mDragFromTextInput = false; 5992 return result; 5993 } 5994 5995 /** 5996 * Due a touch up from a WebTextView. This will be handled by webkit to 5997 * change the selection. 5998 * @param event MotionEvent in the WebTextView's coordinates. 5999 */ 6000 /*package*/ void touchUpOnTextField(MotionEvent event) { 6001 if (!inEditingMode()) { 6002 return; 6003 } 6004 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6005 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6006 nativeMotionUp(x, y, mNavSlop); 6007 } 6008 6009 /** 6010 * Called when pressing the center key or trackball on a textfield. 6011 */ 6012 /*package*/ void centerKeyPressOnTextField() { 6013 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6014 nativeCursorNodePointer()); 6015 } 6016 6017 private void doShortPress() { 6018 if (mNativeClass == 0) { 6019 return; 6020 } 6021 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6022 return; 6023 } 6024 mTouchMode = TOUCH_DONE_MODE; 6025 switchOutDrawHistory(); 6026 // mLastTouchX and mLastTouchY are the point in the current viewport 6027 int contentX = viewToContentX((int) mLastTouchX + mScrollX); 6028 int contentY = viewToContentY((int) mLastTouchY + mScrollY); 6029 if (getSettings().supportTouchOnly()) { 6030 removeTouchHighlight(false); 6031 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6032 // use "0" as generation id to inform WebKit to use the same x/y as 6033 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6034 touchUpData.mMoveGeneration = 0; 6035 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6036 } else if (nativePointInNavCache(contentX, contentY, mNavSlop)) { 6037 WebViewCore.MotionUpData motionUpData = new WebViewCore 6038 .MotionUpData(); 6039 motionUpData.mFrame = nativeCacheHitFramePointer(); 6040 motionUpData.mNode = nativeCacheHitNodePointer(); 6041 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6042 motionUpData.mX = contentX; 6043 motionUpData.mY = contentY; 6044 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6045 motionUpData); 6046 } else { 6047 doMotionUp(contentX, contentY); 6048 } 6049 } 6050 6051 private void doMotionUp(int contentX, int contentY) { 6052 if (nativeMotionUp(contentX, contentY, mNavSlop) && mLogEvent) { 6053 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6054 } 6055 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6056 playSoundEffect(SoundEffectConstants.CLICK); 6057 } 6058 } 6059 6060 /* 6061 * Return true if the view (Plugin) is fully visible and maximized inside 6062 * the WebView. 6063 */ 6064 boolean isPluginFitOnScreen(ViewManager.ChildView view) { 6065 final int viewWidth = getViewWidth(); 6066 final int viewHeight = getViewHeightWithTitle(); 6067 float scale = Math.min((float) viewWidth / view.width, (float) viewHeight / view.height); 6068 scale = mZoomManager.computeScaleWithLimits(scale); 6069 return !mZoomManager.willScaleTriggerZoom(scale) 6070 && contentToViewX(view.x) >= mScrollX 6071 && contentToViewX(view.x + view.width) <= mScrollX + viewWidth 6072 && contentToViewY(view.y) >= mScrollY 6073 && contentToViewY(view.y + view.height) <= mScrollY + viewHeight; 6074 } 6075 6076 /* 6077 * Maximize and center the rectangle, specified in the document coordinate 6078 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6079 * animated scroll to center it. If the zoom needs to be changed, find the 6080 * zoom center and do a smooth zoom transition. 6081 */ 6082 void centerFitRect(int docX, int docY, int docWidth, int docHeight) { 6083 int viewWidth = getViewWidth(); 6084 int viewHeight = getViewHeightWithTitle(); 6085 float scale = Math.min((float) viewWidth / docWidth, (float) viewHeight 6086 / docHeight); 6087 scale = mZoomManager.computeScaleWithLimits(scale); 6088 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6089 pinScrollTo(contentToViewX(docX + docWidth / 2) - viewWidth / 2, 6090 contentToViewY(docY + docHeight / 2) - viewHeight / 2, 6091 true, 0); 6092 } else { 6093 float actualScale = mZoomManager.getScale(); 6094 float oldScreenX = docX * actualScale - mScrollX; 6095 float rectViewX = docX * scale; 6096 float rectViewWidth = docWidth * scale; 6097 float newMaxWidth = mContentWidth * scale; 6098 float newScreenX = (viewWidth - rectViewWidth) / 2; 6099 // pin the newX to the WebView 6100 if (newScreenX > rectViewX) { 6101 newScreenX = rectViewX; 6102 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6103 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6104 } 6105 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6106 / (scale - actualScale); 6107 float oldScreenY = docY * actualScale + getTitleHeight() 6108 - mScrollY; 6109 float rectViewY = docY * scale + getTitleHeight(); 6110 float rectViewHeight = docHeight * scale; 6111 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6112 float newScreenY = (viewHeight - rectViewHeight) / 2; 6113 // pin the newY to the WebView 6114 if (newScreenY > rectViewY) { 6115 newScreenY = rectViewY; 6116 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6117 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6118 } 6119 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6120 / (scale - actualScale); 6121 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6122 mZoomManager.startZoomAnimation(scale, false); 6123 } 6124 } 6125 6126 // Called by JNI to handle a touch on a node representing an email address, 6127 // address, or phone number 6128 private void overrideLoading(String url) { 6129 mCallbackProxy.uiOverrideUrlLoading(url); 6130 } 6131 6132 @Override 6133 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6134 // FIXME: If a subwindow is showing find, and the user touches the 6135 // background window, it can steal focus. 6136 if (mFindIsUp) return false; 6137 boolean result = false; 6138 if (inEditingMode()) { 6139 result = mWebTextView.requestFocus(direction, 6140 previouslyFocusedRect); 6141 } else { 6142 result = super.requestFocus(direction, previouslyFocusedRect); 6143 if (mWebViewCore.getSettings().getNeedInitialFocus()) { 6144 // For cases such as GMail, where we gain focus from a direction, 6145 // we want to move to the first available link. 6146 // FIXME: If there are no visible links, we may not want to 6147 int fakeKeyDirection = 0; 6148 switch(direction) { 6149 case View.FOCUS_UP: 6150 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6151 break; 6152 case View.FOCUS_DOWN: 6153 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6154 break; 6155 case View.FOCUS_LEFT: 6156 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6157 break; 6158 case View.FOCUS_RIGHT: 6159 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6160 break; 6161 default: 6162 return result; 6163 } 6164 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6165 navHandledKey(fakeKeyDirection, 1, true, 0); 6166 } 6167 } 6168 } 6169 return result; 6170 } 6171 6172 @Override 6173 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6174 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6175 6176 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6177 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6178 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6179 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6180 6181 int measuredHeight = heightSize; 6182 int measuredWidth = widthSize; 6183 6184 // Grab the content size from WebViewCore. 6185 int contentHeight = contentToViewDimension(mContentHeight); 6186 int contentWidth = contentToViewDimension(mContentWidth); 6187 6188// Log.d(LOGTAG, "------- measure " + heightMode); 6189 6190 if (heightMode != MeasureSpec.EXACTLY) { 6191 mHeightCanMeasure = true; 6192 measuredHeight = contentHeight; 6193 if (heightMode == MeasureSpec.AT_MOST) { 6194 // If we are larger than the AT_MOST height, then our height can 6195 // no longer be measured and we should scroll internally. 6196 if (measuredHeight > heightSize) { 6197 measuredHeight = heightSize; 6198 mHeightCanMeasure = false; 6199 } 6200 } 6201 } else { 6202 mHeightCanMeasure = false; 6203 } 6204 if (mNativeClass != 0) { 6205 nativeSetHeightCanMeasure(mHeightCanMeasure); 6206 } 6207 // For the width, always use the given size unless unspecified. 6208 if (widthMode == MeasureSpec.UNSPECIFIED) { 6209 mWidthCanMeasure = true; 6210 measuredWidth = contentWidth; 6211 } else { 6212 mWidthCanMeasure = false; 6213 } 6214 6215 synchronized (this) { 6216 setMeasuredDimension(measuredWidth, measuredHeight); 6217 } 6218 } 6219 6220 @Override 6221 public boolean requestChildRectangleOnScreen(View child, 6222 Rect rect, 6223 boolean immediate) { 6224 // don't scroll while in zoom animation. When it is done, we will adjust 6225 // the necessary components (e.g., WebTextView if it is in editing mode) 6226 if (mZoomManager.isFixedLengthAnimationInProgress()) { 6227 return false; 6228 } 6229 6230 rect.offset(child.getLeft() - child.getScrollX(), 6231 child.getTop() - child.getScrollY()); 6232 6233 Rect content = new Rect(viewToContentX(mScrollX), 6234 viewToContentY(mScrollY), 6235 viewToContentX(mScrollX + getWidth() 6236 - getVerticalScrollbarWidth()), 6237 viewToContentY(mScrollY + getViewHeightWithTitle())); 6238 content = nativeSubtractLayers(content); 6239 int screenTop = contentToViewY(content.top); 6240 int screenBottom = contentToViewY(content.bottom); 6241 int height = screenBottom - screenTop; 6242 int scrollYDelta = 0; 6243 6244 if (rect.bottom > screenBottom) { 6245 int oneThirdOfScreenHeight = height / 3; 6246 if (rect.height() > 2 * oneThirdOfScreenHeight) { 6247 // If the rectangle is too tall to fit in the bottom two thirds 6248 // of the screen, place it at the top. 6249 scrollYDelta = rect.top - screenTop; 6250 } else { 6251 // If the rectangle will still fit on screen, we want its 6252 // top to be in the top third of the screen. 6253 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 6254 } 6255 } else if (rect.top < screenTop) { 6256 scrollYDelta = rect.top - screenTop; 6257 } 6258 6259 int screenLeft = contentToViewX(content.left); 6260 int screenRight = contentToViewX(content.right); 6261 int width = screenRight - screenLeft; 6262 int scrollXDelta = 0; 6263 6264 if (rect.right > screenRight && rect.left > screenLeft) { 6265 if (rect.width() > width) { 6266 scrollXDelta += (rect.left - screenLeft); 6267 } else { 6268 scrollXDelta += (rect.right - screenRight); 6269 } 6270 } else if (rect.left < screenLeft) { 6271 scrollXDelta -= (screenLeft - rect.left); 6272 } 6273 6274 if ((scrollYDelta | scrollXDelta) != 0) { 6275 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 6276 } 6277 6278 return false; 6279 } 6280 6281 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 6282 String replace, int newStart, int newEnd) { 6283 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 6284 arg.mReplace = replace; 6285 arg.mNewStart = newStart; 6286 arg.mNewEnd = newEnd; 6287 mTextGeneration++; 6288 arg.mTextGeneration = mTextGeneration; 6289 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 6290 } 6291 6292 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 6293 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 6294 arg.mEvent = event; 6295 arg.mCurrentText = currentText; 6296 // Increase our text generation number, and pass it to webcore thread 6297 mTextGeneration++; 6298 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 6299 // WebKit's document state is not saved until about to leave the page. 6300 // To make sure the host application, like Browser, has the up to date 6301 // document state when it goes to background, we force to save the 6302 // document state. 6303 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 6304 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 6305 cursorData(), 1000); 6306 } 6307 6308 /* package */ synchronized WebViewCore getWebViewCore() { 6309 return mWebViewCore; 6310 } 6311 6312 //------------------------------------------------------------------------- 6313 // Methods can be called from a separate thread, like WebViewCore 6314 // If it needs to call the View system, it has to send message. 6315 //------------------------------------------------------------------------- 6316 6317 /** 6318 * General handler to receive message coming from webkit thread 6319 */ 6320 class PrivateHandler extends Handler { 6321 @Override 6322 public void handleMessage(Message msg) { 6323 // exclude INVAL_RECT_MSG_ID since it is frequently output 6324 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 6325 if (msg.what >= FIRST_PRIVATE_MSG_ID 6326 && msg.what <= LAST_PRIVATE_MSG_ID) { 6327 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 6328 - FIRST_PRIVATE_MSG_ID]); 6329 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 6330 && msg.what <= LAST_PACKAGE_MSG_ID) { 6331 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 6332 - FIRST_PACKAGE_MSG_ID]); 6333 } else { 6334 Log.v(LOGTAG, Integer.toString(msg.what)); 6335 } 6336 } 6337 if (mWebViewCore == null) { 6338 // after WebView's destroy() is called, skip handling messages. 6339 return; 6340 } 6341 switch (msg.what) { 6342 case REMEMBER_PASSWORD: { 6343 mDatabase.setUsernamePassword( 6344 msg.getData().getString("host"), 6345 msg.getData().getString("username"), 6346 msg.getData().getString("password")); 6347 ((Message) msg.obj).sendToTarget(); 6348 break; 6349 } 6350 case NEVER_REMEMBER_PASSWORD: { 6351 mDatabase.setUsernamePassword( 6352 msg.getData().getString("host"), null, null); 6353 ((Message) msg.obj).sendToTarget(); 6354 break; 6355 } 6356 case PREVENT_DEFAULT_TIMEOUT: { 6357 // if timeout happens, cancel it so that it won't block UI 6358 // to continue handling touch events 6359 if ((msg.arg1 == MotionEvent.ACTION_DOWN 6360 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 6361 || (msg.arg1 == MotionEvent.ACTION_MOVE 6362 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 6363 cancelWebCoreTouchEvent( 6364 viewToContentX((int) mLastTouchX + mScrollX), 6365 viewToContentY((int) mLastTouchY + mScrollY), 6366 true); 6367 } 6368 break; 6369 } 6370 case SWITCH_TO_SHORTPRESS: { 6371 if (mTouchMode == TOUCH_INIT_MODE) { 6372 if (!getSettings().supportTouchOnly() 6373 && mPreventDefault != PREVENT_DEFAULT_YES) { 6374 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 6375 updateSelection(); 6376 } else { 6377 // set to TOUCH_SHORTPRESS_MODE so that it won't 6378 // trigger double tap any more 6379 mTouchMode = TOUCH_SHORTPRESS_MODE; 6380 } 6381 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6382 mTouchMode = TOUCH_DONE_MODE; 6383 } 6384 break; 6385 } 6386 case SWITCH_TO_LONGPRESS: { 6387 if (getSettings().supportTouchOnly()) { 6388 removeTouchHighlight(false); 6389 } 6390 if (inFullScreenMode() || mDeferTouchProcess) { 6391 TouchEventData ted = new TouchEventData(); 6392 ted.mAction = WebViewCore.ACTION_LONGPRESS; 6393 ted.mPoints = new Point[1]; 6394 ted.mPoints[0] = new Point(viewToContentX((int) mLastTouchX + mScrollX), 6395 viewToContentY((int) mLastTouchY + mScrollY)); 6396 // metaState for long press is tricky. Should it be the 6397 // state when the press started or when the press was 6398 // released? Or some intermediary key state? For 6399 // simplicity for now, we don't set it. 6400 ted.mMetaState = 0; 6401 ted.mReprocess = mDeferTouchProcess; 6402 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6403 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 6404 mTouchMode = TOUCH_DONE_MODE; 6405 performLongClick(); 6406 } 6407 break; 6408 } 6409 case RELEASE_SINGLE_TAP: { 6410 doShortPress(); 6411 break; 6412 } 6413 case SCROLL_BY_MSG_ID: 6414 setContentScrollBy(msg.arg1, msg.arg2, (Boolean) msg.obj); 6415 break; 6416 case SYNC_SCROLL_TO_MSG_ID: 6417 if (mUserScroll) { 6418 // if user has scrolled explicitly, don't sync the 6419 // scroll position any more 6420 mUserScroll = false; 6421 break; 6422 } 6423 // fall through 6424 case SCROLL_TO_MSG_ID: 6425 if (setContentScrollTo(msg.arg1, msg.arg2)) { 6426 // if we can't scroll to the exact position due to pin, 6427 // send a message to WebCore to re-scroll when we get a 6428 // new picture 6429 mUserScroll = false; 6430 mWebViewCore.sendMessage(EventHub.SYNC_SCROLL, 6431 msg.arg1, msg.arg2); 6432 } 6433 break; 6434 case SPAWN_SCROLL_TO_MSG_ID: 6435 spawnContentScrollTo(msg.arg1, msg.arg2); 6436 break; 6437 case UPDATE_ZOOM_RANGE: { 6438 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 6439 // mScrollX contains the new minPrefWidth 6440 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 6441 break; 6442 } 6443 case REPLACE_BASE_CONTENT: { 6444 nativeReplaceBaseContent(msg.arg1); 6445 break; 6446 } 6447 case NEW_PICTURE_MSG_ID: { 6448 // called for new content 6449 mUserScroll = false; 6450 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 6451 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion.getBounds()); 6452 final Point viewSize = draw.mViewSize; 6453 WebViewCore.ViewState viewState = draw.mViewState; 6454 boolean isPictureAfterFirstLayout = viewState != null; 6455 if (isPictureAfterFirstLayout) { 6456 // Reset the last sent data here since dealing with new page. 6457 mLastWidthSent = 0; 6458 mZoomManager.onFirstLayout(draw); 6459 if (!mDrawHistory) { 6460 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 6461 // As we are on a new page, remove the WebTextView. This 6462 // is necessary for page loads driven by webkit, and in 6463 // particular when the user was on a password field, so 6464 // the WebTextView was visible. 6465 clearTextEntry(); 6466 } 6467 } 6468 6469 // We update the layout (i.e. request a layout from the 6470 // view system) if the last view size that we sent to 6471 // WebCore matches the view size of the picture we just 6472 // received in the fixed dimension. 6473 final boolean updateLayout = viewSize.x == mLastWidthSent 6474 && viewSize.y == mLastHeightSent; 6475 recordNewContentSize(draw.mContentSize.x, 6476 draw.mContentSize.y, updateLayout); 6477 if (DebugFlags.WEB_VIEW) { 6478 Rect b = draw.mInvalRegion.getBounds(); 6479 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 6480 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 6481 } 6482 invalidateContentRect(draw.mInvalRegion.getBounds()); 6483 6484 if (mPictureListener != null) { 6485 mPictureListener.onNewPicture(WebView.this, capturePicture()); 6486 } 6487 6488 // update the zoom information based on the new picture 6489 mZoomManager.onNewPicture(draw); 6490 6491 if (draw.mFocusSizeChanged && inEditingMode()) { 6492 mFocusSizeChanged = true; 6493 } 6494 if (isPictureAfterFirstLayout) { 6495 mViewManager.postReadyToDrawAll(); 6496 } 6497 break; 6498 } 6499 case WEBCORE_INITIALIZED_MSG_ID: 6500 // nativeCreate sets mNativeClass to a non-zero value 6501 nativeCreate(msg.arg1); 6502 break; 6503 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 6504 // Make sure that the textfield is currently focused 6505 // and representing the same node as the pointer. 6506 if (inEditingMode() && 6507 mWebTextView.isSameTextField(msg.arg1)) { 6508 if (msg.getData().getBoolean("password")) { 6509 Spannable text = (Spannable) mWebTextView.getText(); 6510 int start = Selection.getSelectionStart(text); 6511 int end = Selection.getSelectionEnd(text); 6512 mWebTextView.setInPassword(true); 6513 // Restore the selection, which may have been 6514 // ruined by setInPassword. 6515 Spannable pword = 6516 (Spannable) mWebTextView.getText(); 6517 Selection.setSelection(pword, start, end); 6518 // If the text entry has created more events, ignore 6519 // this one. 6520 } else if (msg.arg2 == mTextGeneration) { 6521 mWebTextView.setTextAndKeepSelection( 6522 (String) msg.obj); 6523 } 6524 } 6525 break; 6526 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 6527 displaySoftKeyboard(true); 6528 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 6529 case UPDATE_TEXT_SELECTION_MSG_ID: 6530 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 6531 (WebViewCore.TextSelectionData) msg.obj); 6532 break; 6533 case FORM_DID_BLUR: 6534 if (inEditingMode() 6535 && mWebTextView.isSameTextField(msg.arg1)) { 6536 hideSoftKeyboard(); 6537 } 6538 break; 6539 case RETURN_LABEL: 6540 if (inEditingMode() 6541 && mWebTextView.isSameTextField(msg.arg1)) { 6542 mWebTextView.setHint((String) msg.obj); 6543 InputMethodManager imm 6544 = InputMethodManager.peekInstance(); 6545 // The hint is propagated to the IME in 6546 // onCreateInputConnection. If the IME is already 6547 // active, restart it so that its hint text is updated. 6548 if (imm != null && imm.isActive(mWebTextView)) { 6549 imm.restartInput(mWebTextView); 6550 } 6551 } 6552 break; 6553 case UNHANDLED_NAV_KEY: 6554 navHandledKey(msg.arg1, 1, false, 0); 6555 break; 6556 case UPDATE_TEXT_ENTRY_MSG_ID: 6557 // this is sent after finishing resize in WebViewCore. Make 6558 // sure the text edit box is still on the screen. 6559 if (inEditingMode() && nativeCursorIsTextInput()) { 6560 mWebTextView.bringIntoView(); 6561 rebuildWebTextView(); 6562 } 6563 break; 6564 case CLEAR_TEXT_ENTRY: 6565 clearTextEntry(); 6566 break; 6567 case INVAL_RECT_MSG_ID: { 6568 Rect r = (Rect)msg.obj; 6569 if (r == null) { 6570 invalidate(); 6571 } else { 6572 // we need to scale r from content into view coords, 6573 // which viewInvalidate() does for us 6574 viewInvalidate(r.left, r.top, r.right, r.bottom); 6575 } 6576 break; 6577 } 6578 case REQUEST_FORM_DATA: 6579 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 6580 if (mWebTextView.isSameTextField(msg.arg1)) { 6581 mWebTextView.setAdapterCustom(adapter); 6582 } 6583 break; 6584 case RESUME_WEBCORE_PRIORITY: 6585 WebViewCore.resumePriority(); 6586 WebViewCore.resumeUpdatePicture(mWebViewCore); 6587 break; 6588 6589 case LONG_PRESS_CENTER: 6590 // as this is shared by keydown and trackballdown, reset all 6591 // the states 6592 mGotCenterDown = false; 6593 mTrackballDown = false; 6594 performLongClick(); 6595 break; 6596 6597 case WEBCORE_NEED_TOUCH_EVENTS: 6598 mForwardTouchEvents = (msg.arg1 != 0); 6599 break; 6600 6601 case PREVENT_TOUCH_ID: 6602 if (inFullScreenMode()) { 6603 break; 6604 } 6605 if (msg.obj == null) { 6606 if (msg.arg1 == MotionEvent.ACTION_DOWN 6607 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 6608 // if prevent default is called from WebCore, UI 6609 // will not handle the rest of the touch events any 6610 // more. 6611 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6612 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 6613 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 6614 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6615 // the return for the first ACTION_MOVE will decide 6616 // whether UI will handle touch or not. Currently no 6617 // support for alternating prevent default 6618 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 6619 : PREVENT_DEFAULT_NO; 6620 } 6621 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6622 mTouchHighlightRegion.setEmpty(); 6623 } 6624 } else if (msg.arg2 == 0) { 6625 // prevent default is not called in WebCore, so the 6626 // message needs to be reprocessed in UI 6627 TouchEventData ted = (TouchEventData) msg.obj; 6628 switch (ted.mAction) { 6629 case MotionEvent.ACTION_DOWN: 6630 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 6631 - mScrollX; 6632 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 6633 - mScrollY; 6634 mDeferTouchMode = TOUCH_INIT_MODE; 6635 break; 6636 case MotionEvent.ACTION_MOVE: { 6637 // no snapping in defer process 6638 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 6639 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 6640 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 6641 mDeferTouchMode = TOUCH_DRAG_MODE; 6642 mLastDeferTouchX = x; 6643 mLastDeferTouchY = y; 6644 startDrag(); 6645 } 6646 int deltaX = pinLocX((int) (mScrollX 6647 + mLastDeferTouchX - x)) 6648 - mScrollX; 6649 int deltaY = pinLocY((int) (mScrollY 6650 + mLastDeferTouchY - y)) 6651 - mScrollY; 6652 doDrag(deltaX, deltaY); 6653 if (deltaX != 0) mLastDeferTouchX = x; 6654 if (deltaY != 0) mLastDeferTouchY = y; 6655 break; 6656 } 6657 case MotionEvent.ACTION_UP: 6658 case MotionEvent.ACTION_CANCEL: 6659 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 6660 // no fling in defer process 6661 WebViewCore.resumePriority(); 6662 WebViewCore.resumeUpdatePicture(mWebViewCore); 6663 } 6664 mDeferTouchMode = TOUCH_DONE_MODE; 6665 break; 6666 case WebViewCore.ACTION_DOUBLETAP: 6667 // doDoubleTap() needs mLastTouchX/Y as anchor 6668 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 6669 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 6670 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6671 mDeferTouchMode = TOUCH_DONE_MODE; 6672 break; 6673 case WebViewCore.ACTION_LONGPRESS: 6674 HitTestResult hitTest = getHitTestResult(); 6675 if (hitTest != null && hitTest.mType 6676 != HitTestResult.UNKNOWN_TYPE) { 6677 performLongClick(); 6678 } 6679 mDeferTouchMode = TOUCH_DONE_MODE; 6680 break; 6681 } 6682 } 6683 break; 6684 6685 case REQUEST_KEYBOARD: 6686 if (msg.arg1 == 0) { 6687 hideSoftKeyboard(); 6688 } else { 6689 displaySoftKeyboard(false); 6690 } 6691 break; 6692 6693 case FIND_AGAIN: 6694 // Ignore if find has been dismissed. 6695 if (mFindIsUp && mFindCallback != null) { 6696 mFindCallback.findAll(); 6697 } 6698 break; 6699 6700 case DRAG_HELD_MOTIONLESS: 6701 mHeldMotionless = MOTIONLESS_TRUE; 6702 invalidate(); 6703 // fall through to keep scrollbars awake 6704 6705 case AWAKEN_SCROLL_BARS: 6706 if (mTouchMode == TOUCH_DRAG_MODE 6707 && mHeldMotionless == MOTIONLESS_TRUE) { 6708 awakenScrollBars(ViewConfiguration 6709 .getScrollDefaultDelay(), false); 6710 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6711 .obtainMessage(AWAKEN_SCROLL_BARS), 6712 ViewConfiguration.getScrollDefaultDelay()); 6713 } 6714 break; 6715 6716 case DO_MOTION_UP: 6717 doMotionUp(msg.arg1, msg.arg2); 6718 break; 6719 6720 case SHOW_FULLSCREEN: { 6721 View view = (View) msg.obj; 6722 int npp = msg.arg1; 6723 6724 if (inFullScreenMode()) { 6725 Log.w(LOGTAG, "Should not have another full screen."); 6726 dismissFullScreenMode(); 6727 } 6728 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 6729 mFullScreenHolder.setContentView(view); 6730 mFullScreenHolder.setCancelable(false); 6731 mFullScreenHolder.setCanceledOnTouchOutside(false); 6732 mFullScreenHolder.show(); 6733 6734 break; 6735 } 6736 case HIDE_FULLSCREEN: 6737 dismissFullScreenMode(); 6738 break; 6739 6740 case DOM_FOCUS_CHANGED: 6741 if (inEditingMode()) { 6742 nativeClearCursor(); 6743 rebuildWebTextView(); 6744 } 6745 break; 6746 6747 case SHOW_RECT_MSG_ID: { 6748 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 6749 int x = mScrollX; 6750 int left = contentToViewX(data.mLeft); 6751 int width = contentToViewDimension(data.mWidth); 6752 int maxWidth = contentToViewDimension(data.mContentWidth); 6753 int viewWidth = getViewWidth(); 6754 if (width < viewWidth) { 6755 // center align 6756 x += left + width / 2 - mScrollX - viewWidth / 2; 6757 } else { 6758 x += (int) (left + data.mXPercentInDoc * width 6759 - mScrollX - data.mXPercentInView * viewWidth); 6760 } 6761 if (DebugFlags.WEB_VIEW) { 6762 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 6763 width + ",maxWidth=" + maxWidth + 6764 ",viewWidth=" + viewWidth + ",x=" 6765 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 6766 ",xPercentInView=" + data.mXPercentInView+ ")"); 6767 } 6768 // use the passing content width to cap x as the current 6769 // mContentWidth may not be updated yet 6770 x = Math.max(0, 6771 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 6772 int top = contentToViewY(data.mTop); 6773 int height = contentToViewDimension(data.mHeight); 6774 int maxHeight = contentToViewDimension(data.mContentHeight); 6775 int viewHeight = getViewHeight(); 6776 int y = (int) (top + data.mYPercentInDoc * height - 6777 data.mYPercentInView * viewHeight); 6778 if (DebugFlags.WEB_VIEW) { 6779 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 6780 height + ",maxHeight=" + maxHeight + 6781 ",viewHeight=" + viewHeight + ",y=" 6782 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 6783 ",yPercentInView=" + data.mYPercentInView+ ")"); 6784 } 6785 // use the passing content height to cap y as the current 6786 // mContentHeight may not be updated yet 6787 y = Math.max(0, 6788 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 6789 // We need to take into account the visible title height 6790 // when scrolling since y is an absolute view position. 6791 y = Math.max(0, y - getVisibleTitleHeight()); 6792 scrollTo(x, y); 6793 } 6794 break; 6795 6796 case CENTER_FIT_RECT: 6797 Rect r = (Rect)msg.obj; 6798 centerFitRect(r.left, r.top, r.width(), r.height()); 6799 break; 6800 6801 case SET_SCROLLBAR_MODES: 6802 mHorizontalScrollBarMode = msg.arg1; 6803 mVerticalScrollBarMode = msg.arg2; 6804 break; 6805 6806 case SELECTION_STRING_CHANGED: 6807 if (mAccessibilityInjector != null) { 6808 String selectionString = (String) msg.obj; 6809 mAccessibilityInjector.onSelectionStringChange(selectionString); 6810 } 6811 break; 6812 6813 case SET_TOUCH_HIGHLIGHT_RECTS: 6814 invalidate(mTouchHighlightRegion.getBounds()); 6815 mTouchHighlightRegion.setEmpty(); 6816 if (msg.obj != null) { 6817 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 6818 for (Rect rect : rects) { 6819 Rect viewRect = contentToViewRect(rect); 6820 // some sites, like stories in nytimes.com, set 6821 // mouse event handler in the top div. It is not 6822 // user friendly to highlight the div if it covers 6823 // more than half of the screen. 6824 if (viewRect.width() < getWidth() >> 1 6825 || viewRect.height() < getHeight() >> 1) { 6826 mTouchHighlightRegion.union(viewRect); 6827 invalidate(viewRect); 6828 } else { 6829 Log.w(LOGTAG, "Skip the huge selection rect:" 6830 + viewRect); 6831 } 6832 } 6833 } 6834 break; 6835 6836 case SAVE_WEBARCHIVE_FINISHED: 6837 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 6838 if (saveMessage.mCallback != null) { 6839 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 6840 } 6841 break; 6842 6843 case SET_AUTOFILLABLE: 6844 mAutoFillQueryId = msg.arg1; 6845 if (mWebTextView != null) { 6846 mWebTextView.setAutoFillable(mAutoFillQueryId); 6847 rebuildWebTextView(); 6848 } 6849 break; 6850 6851 default: 6852 super.handleMessage(msg); 6853 break; 6854 } 6855 } 6856 } 6857 6858 /** 6859 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 6860 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 6861 */ 6862 private void updateTextSelectionFromMessage(int nodePointer, 6863 int textGeneration, WebViewCore.TextSelectionData data) { 6864 if (inEditingMode() 6865 && mWebTextView.isSameTextField(nodePointer) 6866 && textGeneration == mTextGeneration) { 6867 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 6868 } 6869 } 6870 6871 // Class used to use a dropdown for a <select> element 6872 private class InvokeListBox implements Runnable { 6873 // Whether the listbox allows multiple selection. 6874 private boolean mMultiple; 6875 // Passed in to a list with multiple selection to tell 6876 // which items are selected. 6877 private int[] mSelectedArray; 6878 // Passed in to a list with single selection to tell 6879 // where the initial selection is. 6880 private int mSelection; 6881 6882 private Container[] mContainers; 6883 6884 // Need these to provide stable ids to my ArrayAdapter, 6885 // which normally does not have stable ids. (Bug 1250098) 6886 private class Container extends Object { 6887 /** 6888 * Possible values for mEnabled. Keep in sync with OptionStatus in 6889 * WebViewCore.cpp 6890 */ 6891 final static int OPTGROUP = -1; 6892 final static int OPTION_DISABLED = 0; 6893 final static int OPTION_ENABLED = 1; 6894 6895 String mString; 6896 int mEnabled; 6897 int mId; 6898 6899 public String toString() { 6900 return mString; 6901 } 6902 } 6903 6904 /** 6905 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 6906 * and allow filtering. 6907 */ 6908 private class MyArrayListAdapter extends ArrayAdapter<Container> { 6909 public MyArrayListAdapter(Context context, Container[] objects, boolean multiple) { 6910 super(context, 6911 multiple ? com.android.internal.R.layout.select_dialog_multichoice : 6912 com.android.internal.R.layout.select_dialog_singlechoice, 6913 objects); 6914 } 6915 6916 @Override 6917 public View getView(int position, View convertView, 6918 ViewGroup parent) { 6919 // Always pass in null so that we will get a new CheckedTextView 6920 // Otherwise, an item which was previously used as an <optgroup> 6921 // element (i.e. has no check), could get used as an <option> 6922 // element, which needs a checkbox/radio, but it would not have 6923 // one. 6924 convertView = super.getView(position, null, parent); 6925 Container c = item(position); 6926 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 6927 // ListView does not draw dividers between disabled and 6928 // enabled elements. Use a LinearLayout to provide dividers 6929 LinearLayout layout = new LinearLayout(mContext); 6930 layout.setOrientation(LinearLayout.VERTICAL); 6931 if (position > 0) { 6932 View dividerTop = new View(mContext); 6933 dividerTop.setBackgroundResource( 6934 android.R.drawable.divider_horizontal_bright); 6935 layout.addView(dividerTop); 6936 } 6937 6938 if (Container.OPTGROUP == c.mEnabled) { 6939 // Currently select_dialog_multichoice and 6940 // select_dialog_singlechoice are CheckedTextViews. If 6941 // that changes, the class cast will no longer be valid. 6942 Assert.assertTrue( 6943 convertView instanceof CheckedTextView); 6944 ((CheckedTextView) convertView).setCheckMarkDrawable( 6945 null); 6946 } else { 6947 // c.mEnabled == Container.OPTION_DISABLED 6948 // Draw the disabled element in a disabled state. 6949 convertView.setEnabled(false); 6950 } 6951 6952 layout.addView(convertView); 6953 if (position < getCount() - 1) { 6954 View dividerBottom = new View(mContext); 6955 dividerBottom.setBackgroundResource( 6956 android.R.drawable.divider_horizontal_bright); 6957 layout.addView(dividerBottom); 6958 } 6959 return layout; 6960 } 6961 return convertView; 6962 } 6963 6964 @Override 6965 public boolean hasStableIds() { 6966 // AdapterView's onChanged method uses this to determine whether 6967 // to restore the old state. Return false so that the old (out 6968 // of date) state does not replace the new, valid state. 6969 return false; 6970 } 6971 6972 private Container item(int position) { 6973 if (position < 0 || position >= getCount()) { 6974 return null; 6975 } 6976 return (Container) getItem(position); 6977 } 6978 6979 @Override 6980 public long getItemId(int position) { 6981 Container item = item(position); 6982 if (item == null) { 6983 return -1; 6984 } 6985 return item.mId; 6986 } 6987 6988 @Override 6989 public boolean areAllItemsEnabled() { 6990 return false; 6991 } 6992 6993 @Override 6994 public boolean isEnabled(int position) { 6995 Container item = item(position); 6996 if (item == null) { 6997 return false; 6998 } 6999 return Container.OPTION_ENABLED == item.mEnabled; 7000 } 7001 } 7002 7003 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7004 mMultiple = true; 7005 mSelectedArray = selected; 7006 7007 int length = array.length; 7008 mContainers = new Container[length]; 7009 for (int i = 0; i < length; i++) { 7010 mContainers[i] = new Container(); 7011 mContainers[i].mString = array[i]; 7012 mContainers[i].mEnabled = enabled[i]; 7013 mContainers[i].mId = i; 7014 } 7015 } 7016 7017 private InvokeListBox(String[] array, int[] enabled, int selection) { 7018 mSelection = selection; 7019 mMultiple = false; 7020 7021 int length = array.length; 7022 mContainers = new Container[length]; 7023 for (int i = 0; i < length; i++) { 7024 mContainers[i] = new Container(); 7025 mContainers[i].mString = array[i]; 7026 mContainers[i].mEnabled = enabled[i]; 7027 mContainers[i].mId = i; 7028 } 7029 } 7030 7031 /* 7032 * Whenever the data set changes due to filtering, this class ensures 7033 * that the checked item remains checked. 7034 */ 7035 private class SingleDataSetObserver extends DataSetObserver { 7036 private long mCheckedId; 7037 private ListView mListView; 7038 private Adapter mAdapter; 7039 7040 /* 7041 * Create a new observer. 7042 * @param id The ID of the item to keep checked. 7043 * @param l ListView for getting and clearing the checked states 7044 * @param a Adapter for getting the IDs 7045 */ 7046 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7047 mCheckedId = id; 7048 mListView = l; 7049 mAdapter = a; 7050 } 7051 7052 public void onChanged() { 7053 // The filter may have changed which item is checked. Find the 7054 // item that the ListView thinks is checked. 7055 int position = mListView.getCheckedItemPosition(); 7056 long id = mAdapter.getItemId(position); 7057 if (mCheckedId != id) { 7058 // Clear the ListView's idea of the checked item, since 7059 // it is incorrect 7060 mListView.clearChoices(); 7061 // Search for mCheckedId. If it is in the filtered list, 7062 // mark it as checked 7063 int count = mAdapter.getCount(); 7064 for (int i = 0; i < count; i++) { 7065 if (mAdapter.getItemId(i) == mCheckedId) { 7066 mListView.setItemChecked(i, true); 7067 break; 7068 } 7069 } 7070 } 7071 } 7072 7073 public void onInvalidate() {} 7074 } 7075 7076 public void run() { 7077 final ListView listView = (ListView) LayoutInflater.from(mContext) 7078 .inflate(com.android.internal.R.layout.select_dialog, null); 7079 final MyArrayListAdapter adapter = new 7080 MyArrayListAdapter(mContext, mContainers, mMultiple); 7081 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7082 .setView(listView).setCancelable(true) 7083 .setInverseBackgroundForced(true); 7084 7085 if (mMultiple) { 7086 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7087 public void onClick(DialogInterface dialog, int which) { 7088 mWebViewCore.sendMessage( 7089 EventHub.LISTBOX_CHOICES, 7090 adapter.getCount(), 0, 7091 listView.getCheckedItemPositions()); 7092 }}); 7093 b.setNegativeButton(android.R.string.cancel, 7094 new DialogInterface.OnClickListener() { 7095 public void onClick(DialogInterface dialog, int which) { 7096 mWebViewCore.sendMessage( 7097 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7098 }}); 7099 } 7100 mListBoxDialog = b.create(); 7101 listView.setAdapter(adapter); 7102 listView.setFocusableInTouchMode(true); 7103 // There is a bug (1250103) where the checks in a ListView with 7104 // multiple items selected are associated with the positions, not 7105 // the ids, so the items do not properly retain their checks when 7106 // filtered. Do not allow filtering on multiple lists until 7107 // that bug is fixed. 7108 7109 listView.setTextFilterEnabled(!mMultiple); 7110 if (mMultiple) { 7111 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7112 int length = mSelectedArray.length; 7113 for (int i = 0; i < length; i++) { 7114 listView.setItemChecked(mSelectedArray[i], true); 7115 } 7116 } else { 7117 listView.setOnItemClickListener(new OnItemClickListener() { 7118 public void onItemClick(AdapterView parent, View v, 7119 int position, long id) { 7120 mWebViewCore.sendMessage( 7121 EventHub.SINGLE_LISTBOX_CHOICE, (int)id, 0); 7122 mListBoxDialog.dismiss(); 7123 mListBoxDialog = null; 7124 } 7125 }); 7126 if (mSelection != -1) { 7127 listView.setSelection(mSelection); 7128 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 7129 listView.setItemChecked(mSelection, true); 7130 DataSetObserver observer = new SingleDataSetObserver( 7131 adapter.getItemId(mSelection), listView, adapter); 7132 adapter.registerDataSetObserver(observer); 7133 } 7134 } 7135 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 7136 public void onCancel(DialogInterface dialog) { 7137 mWebViewCore.sendMessage( 7138 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7139 mListBoxDialog = null; 7140 } 7141 }); 7142 mListBoxDialog.show(); 7143 } 7144 } 7145 7146 /* 7147 * Request a dropdown menu for a listbox with multiple selection. 7148 * 7149 * @param array Labels for the listbox. 7150 * @param enabledArray State for each element in the list. See static 7151 * integers in Container class. 7152 * @param selectedArray Which positions are initally selected. 7153 */ 7154 void requestListBox(String[] array, int[] enabledArray, int[] 7155 selectedArray) { 7156 mPrivateHandler.post( 7157 new InvokeListBox(array, enabledArray, selectedArray)); 7158 } 7159 7160 /* 7161 * Request a dropdown menu for a listbox with single selection or a single 7162 * <select> element. 7163 * 7164 * @param array Labels for the listbox. 7165 * @param enabledArray State for each element in the list. See static 7166 * integers in Container class. 7167 * @param selection Which position is initally selected. 7168 */ 7169 void requestListBox(String[] array, int[] enabledArray, int selection) { 7170 mPrivateHandler.post( 7171 new InvokeListBox(array, enabledArray, selection)); 7172 } 7173 7174 // called by JNI 7175 private void sendMoveFocus(int frame, int node) { 7176 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 7177 new WebViewCore.CursorData(frame, node, 0, 0)); 7178 } 7179 7180 // called by JNI 7181 private void sendMoveMouse(int frame, int node, int x, int y) { 7182 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 7183 new WebViewCore.CursorData(frame, node, x, y)); 7184 } 7185 7186 /* 7187 * Send a mouse move event to the webcore thread. 7188 * 7189 * @param removeFocus Pass true if the "mouse" cursor is now over a node 7190 * which wants key events, but it is not the focus. This 7191 * will make the visual appear as though nothing is in 7192 * focus. Remove the WebTextView, if present, and stop 7193 * drawing the blinking caret. 7194 * called by JNI 7195 */ 7196 private void sendMoveMouseIfLatest(boolean removeFocus) { 7197 if (removeFocus) { 7198 clearTextEntry(); 7199 } 7200 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 7201 cursorData()); 7202 } 7203 7204 // called by JNI 7205 private void sendMotionUp(int touchGeneration, 7206 int frame, int node, int x, int y) { 7207 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7208 touchUpData.mMoveGeneration = touchGeneration; 7209 touchUpData.mFrame = frame; 7210 touchUpData.mNode = node; 7211 touchUpData.mX = x; 7212 touchUpData.mY = y; 7213 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7214 } 7215 7216 7217 private int getScaledMaxXScroll() { 7218 int width; 7219 if (mHeightCanMeasure == false) { 7220 width = getViewWidth() / 4; 7221 } else { 7222 Rect visRect = new Rect(); 7223 calcOurVisibleRect(visRect); 7224 width = visRect.width() / 2; 7225 } 7226 // FIXME the divisor should be retrieved from somewhere 7227 return viewToContentX(width); 7228 } 7229 7230 private int getScaledMaxYScroll() { 7231 int height; 7232 if (mHeightCanMeasure == false) { 7233 height = getViewHeight() / 4; 7234 } else { 7235 Rect visRect = new Rect(); 7236 calcOurVisibleRect(visRect); 7237 height = visRect.height() / 2; 7238 } 7239 // FIXME the divisor should be retrieved from somewhere 7240 // the closest thing today is hard-coded into ScrollView.java 7241 // (from ScrollView.java, line 363) int maxJump = height/2; 7242 return Math.round(height * mZoomManager.getInvScale()); 7243 } 7244 7245 /** 7246 * Called by JNI to invalidate view 7247 */ 7248 private void viewInvalidate() { 7249 invalidate(); 7250 } 7251 7252 /** 7253 * Pass the key directly to the page. This assumes that 7254 * nativePageShouldHandleShiftAndArrows() returned true. 7255 */ 7256 private void letPageHandleNavKey(int keyCode, long time, boolean down) { 7257 int keyEventAction; 7258 int eventHubAction; 7259 if (down) { 7260 keyEventAction = KeyEvent.ACTION_DOWN; 7261 eventHubAction = EventHub.KEY_DOWN; 7262 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 7263 } else { 7264 keyEventAction = KeyEvent.ACTION_UP; 7265 eventHubAction = EventHub.KEY_UP; 7266 } 7267 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 7268 1, (mShiftIsPressed ? KeyEvent.META_SHIFT_ON : 0) 7269 | (false ? KeyEvent.META_ALT_ON : 0) // FIXME 7270 | (false ? KeyEvent.META_SYM_ON : 0) // FIXME 7271 , 0, 0, 0); 7272 mWebViewCore.sendMessage(eventHubAction, event); 7273 } 7274 7275 // return true if the key was handled 7276 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 7277 long time) { 7278 if (mNativeClass == 0) { 7279 return false; 7280 } 7281 mLastCursorTime = time; 7282 mLastCursorBounds = nativeGetCursorRingBounds(); 7283 boolean keyHandled 7284 = nativeMoveCursor(keyCode, count, noScroll) == false; 7285 if (DebugFlags.WEB_VIEW) { 7286 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 7287 + " mLastCursorTime=" + mLastCursorTime 7288 + " handled=" + keyHandled); 7289 } 7290 if (keyHandled == false || mHeightCanMeasure == false) { 7291 return keyHandled; 7292 } 7293 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 7294 if (contentCursorRingBounds.isEmpty()) return keyHandled; 7295 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 7296 Rect visRect = new Rect(); 7297 calcOurVisibleRect(visRect); 7298 Rect outset = new Rect(visRect); 7299 int maxXScroll = visRect.width() / 2; 7300 int maxYScroll = visRect.height() / 2; 7301 outset.inset(-maxXScroll, -maxYScroll); 7302 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 7303 return keyHandled; 7304 } 7305 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 7306 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 7307 maxXScroll); 7308 if (maxH > 0) { 7309 pinScrollBy(maxH, 0, true, 0); 7310 } else { 7311 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 7312 -maxXScroll); 7313 if (maxH < 0) { 7314 pinScrollBy(maxH, 0, true, 0); 7315 } 7316 } 7317 if (mLastCursorBounds.isEmpty()) return keyHandled; 7318 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 7319 return keyHandled; 7320 } 7321 if (DebugFlags.WEB_VIEW) { 7322 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 7323 + contentCursorRingBounds); 7324 } 7325 requestRectangleOnScreen(viewCursorRingBounds); 7326 mUserScroll = true; 7327 return keyHandled; 7328 } 7329 7330 /** 7331 * @return If the page should receive Shift and arrows. 7332 */ 7333 private boolean pageShouldHandleShiftAndArrows() { 7334 // TODO: Maybe the injected script should announce its presence in 7335 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 7336 // will check that as one of the conditions it looks for 7337 return (nativePageShouldHandleShiftAndArrows() || mAccessibilityScriptInjected); 7338 } 7339 7340 /** 7341 * Set the background color. It's white by default. Pass 7342 * zero to make the view transparent. 7343 * @param color the ARGB color described by Color.java 7344 */ 7345 public void setBackgroundColor(int color) { 7346 mBackgroundColor = color; 7347 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 7348 } 7349 7350 public void debugDump() { 7351 nativeDebugDump(); 7352 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 7353 } 7354 7355 /** 7356 * Draw the HTML page into the specified canvas. This call ignores any 7357 * view-specific zoom, scroll offset, or other changes. It does not draw 7358 * any view-specific chrome, such as progress or URL bars. 7359 * 7360 * @hide only needs to be accessible to Browser and testing 7361 */ 7362 public void drawPage(Canvas canvas) { 7363 nativeDraw(canvas, 0, 0, false); 7364 } 7365 7366 /** 7367 * Set the time to wait between passing touches to WebCore. See also the 7368 * TOUCH_SENT_INTERVAL member for further discussion. 7369 * 7370 * @hide This is only used by the DRT test application. 7371 */ 7372 public void setTouchInterval(int interval) { 7373 mCurrentTouchInterval = interval; 7374 } 7375 7376 /** 7377 * Toggle whether multi touch events should be sent to webkit 7378 * no matter if UI wants to handle it first. 7379 * 7380 * @hide This is only used by the webkit layout test. 7381 */ 7382 public void setDeferMultiTouch(boolean value) { 7383 mDeferMultitouch = value; 7384 Log.v(LOGTAG, "set mDeferMultitouch to " + value); 7385 } 7386 7387 /** 7388 * Update our cache with updatedText. 7389 * @param updatedText The new text to put in our cache. 7390 */ 7391 /* package */ void updateCachedTextfield(String updatedText) { 7392 // Also place our generation number so that when we look at the cache 7393 // we recognize that it is up to date. 7394 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 7395 } 7396 7397 /*package*/ void autoFillForm(int autoFillQueryId) { 7398 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 7399 } 7400 7401 private native int nativeCacheHitFramePointer(); 7402 private native Rect nativeCacheHitNodeBounds(); 7403 private native int nativeCacheHitNodePointer(); 7404 /* package */ native void nativeClearCursor(); 7405 private native void nativeCreate(int ptr); 7406 private native int nativeCursorFramePointer(); 7407 private native Rect nativeCursorNodeBounds(); 7408 private native int nativeCursorNodePointer(); 7409 /* package */ native boolean nativeCursorMatchesFocus(); 7410 private native boolean nativeCursorIntersects(Rect visibleRect); 7411 private native boolean nativeCursorIsAnchor(); 7412 private native boolean nativeCursorIsTextInput(); 7413 private native Point nativeCursorPosition(); 7414 private native String nativeCursorText(); 7415 /** 7416 * Returns true if the native cursor node says it wants to handle key events 7417 * (ala plugins). This can only be called if mNativeClass is non-zero! 7418 */ 7419 private native boolean nativeCursorWantsKeyEvents(); 7420 private native void nativeDebugDump(); 7421 private native void nativeDestroy(); 7422 7423 /** 7424 * Draw the picture set with a background color and extra. If 7425 * "splitIfNeeded" is true and the return value is not 0, the return value 7426 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 7427 * native allocation can be freed. 7428 */ 7429 private native int nativeDraw(Canvas canvas, int color, int extra, 7430 boolean splitIfNeeded); 7431 private native void nativeDumpDisplayTree(String urlOrNull); 7432 private native boolean nativeEvaluateLayersAnimations(); 7433 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 7434 private native void nativeExtendSelection(int x, int y); 7435 private native int nativeFindAll(String findLower, String findUpper, 7436 boolean sameAsLastSearch); 7437 private native void nativeFindNext(boolean forward); 7438 /* package */ native int nativeFocusCandidateFramePointer(); 7439 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 7440 /* package */ native boolean nativeFocusCandidateIsPassword(); 7441 private native boolean nativeFocusCandidateIsRtlText(); 7442 private native boolean nativeFocusCandidateIsTextInput(); 7443 /* package */ native int nativeFocusCandidateMaxLength(); 7444 /* package */ native String nativeFocusCandidateName(); 7445 private native Rect nativeFocusCandidateNodeBounds(); 7446 /** 7447 * @return A Rect with left, top, right, bottom set to the corresponding 7448 * padding values in the focus candidate, if it is a textfield/textarea with 7449 * a style. Otherwise return null. This is not actually a rectangle; Rect 7450 * is being used to pass four integers. 7451 */ 7452 private native Rect nativeFocusCandidatePaddingRect(); 7453 /* package */ native int nativeFocusCandidatePointer(); 7454 private native String nativeFocusCandidateText(); 7455 private native int nativeFocusCandidateTextSize(); 7456 /** 7457 * Returns an integer corresponding to WebView.cpp::type. 7458 * See WebTextView.setType() 7459 */ 7460 private native int nativeFocusCandidateType(); 7461 private native boolean nativeFocusIsPlugin(); 7462 private native Rect nativeFocusNodeBounds(); 7463 /* package */ native int nativeFocusNodePointer(); 7464 private native Rect nativeGetCursorRingBounds(); 7465 private native String nativeGetSelection(); 7466 private native boolean nativeHasCursorNode(); 7467 private native boolean nativeHasFocusNode(); 7468 private native void nativeHideCursor(); 7469 private native boolean nativeHitSelection(int x, int y); 7470 private native String nativeImageURI(int x, int y); 7471 private native void nativeInstrumentReport(); 7472 /* package */ native boolean nativeMoveCursorToNextTextInput(); 7473 // return true if the page has been scrolled 7474 private native boolean nativeMotionUp(int x, int y, int slop); 7475 // returns false if it handled the key 7476 private native boolean nativeMoveCursor(int keyCode, int count, 7477 boolean noScroll); 7478 private native int nativeMoveGeneration(); 7479 private native void nativeMoveSelection(int x, int y); 7480 /** 7481 * @return true if the page should get the shift and arrow keys, rather 7482 * than select text/navigation. 7483 * 7484 * If the focus is a plugin, or if the focus and cursor match and are 7485 * a contentEditable element, then the page should handle these keys. 7486 */ 7487 private native boolean nativePageShouldHandleShiftAndArrows(); 7488 private native boolean nativePointInNavCache(int x, int y, int slop); 7489 // Like many other of our native methods, you must make sure that 7490 // mNativeClass is not null before calling this method. 7491 private native void nativeRecordButtons(boolean focused, 7492 boolean pressed, boolean invalidate); 7493 private native void nativeResetSelection(); 7494 private native void nativeSelectAll(); 7495 private native void nativeSelectBestAt(Rect rect); 7496 private native int nativeSelectionX(); 7497 private native int nativeSelectionY(); 7498 private native int nativeFindIndex(); 7499 private native void nativeSetExtendSelection(); 7500 private native void nativeSetFindIsEmpty(); 7501 private native void nativeSetFindIsUp(boolean isUp); 7502 private native void nativeSetHeightCanMeasure(boolean measure); 7503 private native void nativeSetBaseLayer(int layer, Rect invalRect); 7504 private native void nativeShowCursorTimed(); 7505 private native void nativeReplaceBaseContent(int content); 7506 private native void nativeCopyBaseContentToPicture(Picture pict); 7507 private native boolean nativeHasContent(); 7508 private native void nativeSetSelectionPointer(boolean set, 7509 float scale, int x, int y); 7510 private native boolean nativeStartSelection(int x, int y); 7511 private native Rect nativeSubtractLayers(Rect content); 7512 private native int nativeTextGeneration(); 7513 // Never call this version except by updateCachedTextfield(String) - 7514 // we always want to pass in our generation number. 7515 private native void nativeUpdateCachedTextfield(String updatedText, 7516 int generation); 7517 private native boolean nativeWordSelection(int x, int y); 7518 // return NO_LEFTEDGE means failure. 7519 static final int NO_LEFTEDGE = -1; 7520 native int nativeGetBlockLeftEdge(int x, int y, float scale); 7521 7522 // Returns a pointer to the scrollable LayerAndroid at the given point. 7523 private native int nativeScrollableLayer(int x, int y); 7524 private native boolean nativeScrollLayer(int layer, int dx, int dy); 7525} 7526